apparmor: add yggdrasilctl policy (#1235)

as it is long gone from the daemon code
and unexpectedly kills the daemon

.circleci/config.yml

@@ -1,191 +0,0 @@
-# Golang CircleCI 2.0 configuration file
-#
-# Check https://circleci.com/docs/2.0/language-go/ for more details
-version: 2.1
-jobs:
-  build-linux:
-    docker:
-      - image: circleci/golang:1.12
-
-    steps:
-      - checkout
-
-      - run:
-          name: Create artifact upload directory and set variables
-          command: |
-              mkdir /tmp/upload
-              echo 'export CINAME=$(sh contrib/semver/name.sh)' >> $BASH_ENV
-              echo 'export CIVERSION=$(sh contrib/semver/version.sh --bare)' >> $BASH_ENV
-              git config --global user.email "$(git log --format='%ae' HEAD -1)";
-              git config --global user.name "$(git log --format='%an' HEAD -1)";
-
-      - run:
-          name: Install alien
-          command: |
-              sudo apt-get install -y alien
-
-      - run:
-          name: Test debug builds
-          command: |
-              ./build -d
-              test -f yggdrasil && test -f yggdrasilctl
-
-      - run:
-          name: Build for Linux (including Debian packages and RPMs)
-          command: |
-              rm -f {yggdrasil,yggdrasilctl}
-              PKGARCH=amd64 sh contrib/deb/generate.sh && mv yggdrasil /tmp/upload/$CINAME-$CIVERSION-linux-amd64 && mv yggdrasilctl /tmp/upload/$CINAME-$CIVERSION-yggdrasilctl-linux-amd64;
-              PKGARCH=i386 sh contrib/deb/generate.sh && mv yggdrasil /tmp/upload/$CINAME-$CIVERSION-linux-i386 && mv yggdrasilctl /tmp/upload/$CINAME-$CIVERSION-yggdrasilctl-linux-i386;
-              PKGARCH=mipsel sh contrib/deb/generate.sh && mv yggdrasil /tmp/upload/$CINAME-$CIVERSION-linux-mipsel && mv yggdrasilctl /tmp/upload/$CINAME-$CIVERSION-yggdrasilctl-linux-mipsel;
-              PKGARCH=mips sh contrib/deb/generate.sh && mv yggdrasil /tmp/upload/$CINAME-$CIVERSION-linux-mips && mv yggdrasilctl /tmp/upload/$CINAME-$CIVERSION-yggdrasilctl-linux-mips;
-              PKGARCH=armhf sh contrib/deb/generate.sh && mv yggdrasil /tmp/upload/$CINAME-$CIVERSION-linux-armhf && mv yggdrasilctl /tmp/upload/$CINAME-$CIVERSION-yggdrasilctl-linux-armhf;
-              PKGARCH=arm64 sh contrib/deb/generate.sh && mv yggdrasil /tmp/upload/$CINAME-$CIVERSION-linux-arm64 && mv yggdrasilctl /tmp/upload/$CINAME-$CIVERSION-yggdrasilctl-linux-arm64;
-              sudo alien --to-rpm yggdrasil*.deb --scripts --keep-version && mv *.rpm /tmp/upload/;
-              mv *.deb /tmp/upload/
-
-      - run:
-          name: Build for EdgeRouter
-          command: |
-              rm -f {yggdrasil,yggdrasilctl}
-              git clone https://github.com/neilalexander/vyatta-yggdrasil /tmp/vyatta-yggdrasil;
-              cd /tmp/vyatta-yggdrasil;
-              BUILDDIR_YGG=$CIRCLE_WORKING_DIRECTORY ./build-edgerouter-x $CIRCLE_BRANCH;
-              BUILDDIR_YGG=$CIRCLE_WORKING_DIRECTORY ./build-edgerouter-lite $CIRCLE_BRANCH;
-              mv *.deb /tmp/upload;
-
-      - persist_to_workspace:
-          root: /tmp
-          paths:
-            - upload
-
-  build-macos:
-    macos:
-      xcode: "10.0.0"
-
-    working_directory: ~/go/src/github.com/yggdrasil-network/yggdrasil-go
-
-    steps:
-      - checkout
-
-      - run:
-          name: Create artifact upload directory and set variables
-          command: |
-              mkdir /tmp/upload
-              echo 'export CINAME=$(sh contrib/semver/name.sh)' >> $BASH_ENV
-              echo 'export CIVERSION=$(sh contrib/semver/version.sh --bare)' >> $BASH_ENV
-              echo 'export PATH=$PATH:/usr/local/go/bin:~/go/bin' >> $BASH_ENV
-              git config --global user.email "$(git log --format='%ae' HEAD -1)";
-              git config --global user.name "$(git log --format='%an' HEAD -1)";
-              echo -e "Host *\n\tStrictHostKeyChecking no\n" >> ~/.ssh/config
-
-      - run:
-          name: Install Go 1.12
-          command: |
-              cd /tmp
-              curl -LO https://dl.google.com/go/go1.12.darwin-amd64.pkg
-              sudo installer -pkg /tmp/go1.12.darwin-amd64.pkg -target /
-
-      #- run:
-      #    name: Install Gomobile
-      #    command: |
-      #        GO111MODULE=off go get golang.org/x/mobile/cmd/gomobile
-      #        gomobile init
-
-      - run:
-          name: Build for macOS
-          command: |
-              GO111MODULE=on GOOS=darwin GOARCH=amd64 ./build
-              cp yggdrasil /tmp/upload/$CINAME-$CIVERSION-darwin-amd64
-              cp yggdrasilctl /tmp/upload/$CINAME-$CIVERSION-yggdrasilctl-darwin-amd64;
-
-      - run:
-          name: Build for macOS (.pkg format)
-          command: |
-              PKGARCH=amd64 sh contrib/macos/create-pkg.sh
-              mv *.pkg /tmp/upload/
-
-      #- run:
-      #    name: Build framework for iOS (.framework format)
-      #    command: |
-      #        sudo GO111MODULE=off go get -v github.com/yggdrasil-network/yggdrasil-go/cmd/...
-      #        sudo GO111MODULE=off go get -v github.com/yggdrasil-network/yggdrasil-go/src/...
-      #        GO111MODULE=off ./build -i
-      #        mv *.framework /tmp/upload
-
-      - persist_to_workspace:
-          root: /tmp
-          paths:
-            - upload
-
-  build-other:
-    docker:
-      - image: circleci/golang:1.12
-
-    steps:
-      - checkout
-
-      - run:
-          name: Create artifact upload directory and set variables
-          command: |
-              mkdir /tmp/upload
-              echo 'export CINAME=$(sh contrib/semver/name.sh)' >> $BASH_ENV
-              echo 'export CIVERSION=$(sh contrib/semver/version.sh --bare)' >> $BASH_ENV
-              git config --global user.email "$(git log --format='%ae' HEAD -1)";
-              git config --global user.name "$(git log --format='%an' HEAD -1)";
-
-      - run:
-          name: Build for OpenBSD
-          command: |
-              rm -f {yggdrasil,yggdrasilctl}
-              GOOS=openbsd GOARCH=amd64 ./build && mv yggdrasil /tmp/upload/$CINAME-$CIVERSION-openbsd-amd64 && mv yggdrasilctl /tmp/upload/$CINAME-$CIVERSION-yggdrasilctl-openbsd-amd64;
-              GOOS=openbsd GOARCH=386 ./build && mv yggdrasil /tmp/upload/$CINAME-$CIVERSION-openbsd-i386 && mv yggdrasilctl /tmp/upload/$CINAME-$CIVERSION-yggdrasilctl-openbsd-i386;
-
-      - run:
-          name: Build for FreeBSD
-          command: |
-              rm -f {yggdrasil,yggdrasilctl}
-              GOOS=freebsd GOARCH=amd64 ./build && mv yggdrasil /tmp/upload/$CINAME-$CIVERSION-freebsd-amd64 && mv yggdrasilctl /tmp/upload/$CINAME-$CIVERSION-yggdrasilctl-freebsd-amd64;
-              GOOS=freebsd GOARCH=386 ./build && mv yggdrasil /tmp/upload/$CINAME-$CIVERSION-freebsd-i386 && mv yggdrasilctl /tmp/upload/$CINAME-$CIVERSION-yggdrasilctl-freebsd-i386;
-
-      - run:
-          name: Build for NetBSD
-          command: |
-              rm -f {yggdrasil,yggdrasilctl}
-              GOOS=netbsd GOARCH=amd64 ./build && mv yggdrasil /tmp/upload/$CINAME-$CIVERSION-netbsd-amd64 && mv yggdrasilctl /tmp/upload/$CINAME-$CIVERSION-yggdrasilctl-netbsd-amd64;
-              GOOS=netbsd GOARCH=386 ./build && mv yggdrasil /tmp/upload/$CINAME-$CIVERSION-netbsd-i386 && mv yggdrasilctl /tmp/upload/$CINAME-$CIVERSION-yggdrasilctl-netbsd-i386;
-
-      - run:
-          name: Build for Windows
-          command: |
-              rm -f {yggdrasil,yggdrasilctl}
-              GOOS=windows GOARCH=amd64 ./build && mv yggdrasil.exe /tmp/upload/$CINAME-$CIVERSION-windows-amd64.exe && mv yggdrasilctl.exe /tmp/upload/$CINAME-$CIVERSION-yggdrasilctl-windows-amd64.exe;
-              GOOS=windows GOARCH=386 ./build && mv yggdrasil.exe /tmp/upload/$CINAME-$CIVERSION-windows-i386.exe && mv yggdrasilctl.exe /tmp/upload/$CINAME-$CIVERSION-yggdrasilctl-windows-i386.exe;
-
-      - persist_to_workspace:
-          root: /tmp
-          paths:
-            - upload
-
-  upload:
-    machine: true
-
-    steps:
-      - attach_workspace:
-          at: /tmp
-
-      - store_artifacts:
-          path: /tmp/upload
-          destination: /
-
-workflows:
-  version: 2.1
-  build:
-    jobs:
-      - build-linux
-      - build-macos
-      - build-other
-      - upload:
-          requires:
-            - build-linux
-            - build-macos
-            - build-other

.github/workflows/ci.yml

@@ -0,0 +1,157 @@
+name: Yggdrasil
+
+on:
+  push:
+  pull_request:
+  release:
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-go@v5
+        with:
+          go-version: stable
+      - uses: actions/checkout@v4
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v6
+        with:
+          args: --issues-exit-code=1
+
+  codeql:
+    name: Analyse
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v2
+        with:
+          languages: go
+
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@v2
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v2
+
+  build-linux:
+    strategy:
+      fail-fast: false
+      matrix:
+        goversion: ["1.22", "1.23", "1.24"]
+
+    name: Build & Test (Linux, Go ${{ matrix.goversion }})
+    needs: [lint]
+
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: ${{ matrix.goversion }}
+
+      - name: Build Yggdrasil
+        run: go build -v ./...
+
+      - name: Unit tests
+        run: go test -v ./...
+
+  build-windows:
+    strategy:
+      fail-fast: false
+      matrix:
+        goversion: ["1.22", "1.23", "1.24"]
+
+    name: Build & Test (Windows, Go ${{ matrix.goversion }})
+    needs: [lint]
+
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: ${{ matrix.goversion }}
+
+      - name: Build Yggdrasil
+        run: go build -v ./...
+
+      - name: Unit tests
+        run: go test -v ./...
+
+  build-macos:
+    strategy:
+      fail-fast: false
+      matrix:
+        goversion: ["1.22", "1.23", "1.24"]
+
+    name: Build & Test (macOS, Go ${{ matrix.goversion }})
+    needs: [lint]
+
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: ${{ matrix.goversion }}
+
+      - name: Build Yggdrasil
+        run: go build -v ./...
+
+      - name: Unit tests
+        run: go test -v ./...
+
+  build-freebsd:
+    strategy:
+      fail-fast: false
+      matrix:
+        goversion: ["1.22", "1.23", "1.24"]
+        goos:
+          - freebsd
+          - openbsd
+
+    name: Build (Cross ${{ matrix.goos }}, Go ${{ matrix.goversion }})
+    needs: [lint]
+
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: ${{ matrix.goversion }}
+
+      - name: Build Yggdrasil
+        run: go build -v ./...
+        env:
+          GOOS: ${{ matrix.goos }}
+
+  tests-ok:
+    name: All tests passed
+    needs: [lint, codeql, build-linux, build-windows, build-macos]
+    runs-on: ubuntu-latest
+    if: ${{ !cancelled() }}
+    steps:
+      - name: Check all tests passed
+        uses: re-actors/alls-green@release/v1
+        with:
+          jobs: ${{ toJSON(needs) }}

.github/workflows/pkg.yml

@@ -0,0 +1,140 @@
+name: Packages
+
+on:
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build-packages-debian:
+    strategy:
+      fail-fast: false
+      matrix:
+        pkgarch: ["amd64", "i386", "mips", "mipsel", "armhf", "armel", "arm64"]
+
+    name: Package (Debian, ${{ matrix.pkgarch }})
+
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "stable"
+
+      - name: Build package
+        env:
+          PKGARCH: ${{ matrix.pkgarch }}
+        run: sh contrib/deb/generate.sh
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: Debian package (${{ matrix.pkgarch }})
+          path: "*.deb"
+          if-no-files-found: error
+
+  build-packages-macos:
+    strategy:
+      fail-fast: false
+      matrix:
+        pkgarch: ["amd64", "arm64"]
+
+    name: Package (macOS, ${{ matrix.pkgarch }})
+
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "stable"
+
+      - name: Build package
+        env:
+          PKGARCH: ${{ matrix.pkgarch }}
+        run: sh contrib/macos/create-pkg.sh
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: macOS package (${{ matrix.pkgarch }})
+          path: "*.pkg"
+          if-no-files-found: error
+
+  build-packages-windows:
+    strategy:
+      fail-fast: false
+      matrix:
+        pkgarch: ["x64", "x86", "arm", "arm64"]
+
+    name: Package (Windows, ${{ matrix.pkgarch }})
+
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "stable"
+
+      - name: Setup .NET Core SDK
+        uses: actions/setup-dotnet@v4
+
+      - name: Build package
+        run: sh contrib/msi/build-msi.sh ${{ matrix.pkgarch }}
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: Windows package (${{ matrix.pkgarch }})
+          path: "*.msi"
+          if-no-files-found: error
+
+  build-packages-router:
+    strategy:
+      fail-fast: false
+      matrix:
+        pkgarch: ["edgerouter-x", "edgerouter-lite", "vyos-amd64", "vyos-i386"]
+
+    name: Package (Router, ${{ matrix.pkgarch }})
+
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          path: yggdrasil
+
+      - uses: actions/checkout@v4
+        with:
+          repository: neilalexander/vyatta-yggdrasil
+          path: vyatta-yggdrasil
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "stable"
+
+      - name: Build package
+        env:
+          BUILDDIR_YGG: /home/runner/work/yggdrasil-go/yggdrasil-go/yggdrasil
+        run: cd /home/runner/work/yggdrasil-go/yggdrasil-go/vyatta-yggdrasil && ./build-${{ matrix.pkgarch }}
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: Router package (${{ matrix.pkgarch }})
+          path: "/home/runner/work/yggdrasil-go/yggdrasil-go/vyatta-yggdrasil/*.deb"
+          if-no-files-found: error

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "doc/yggdrasil-network.github.io"]
-	path = doc/yggdrasil-network.github.io
-	url = https://github.com/yggdrasil-network/yggdrasil-network.github.io/

.golangci.yml

@@ -0,0 +1,11 @@
+run:
+  build-tags:
+    - lint
+  issues-exit-code: 0 # TODO: change this to 1 when we want it to fail builds
+issues:
+  exclude-dirs:
+    - contrib/
+    - misc/
+linters:
+  disable:
+    - gocyclo

README.md

@@ -1,7 +1,6 @@
 # Yggdrasil
 
-[![CircleCI](https://circleci.com/gh/yggdrasil-network/yggdrasil-go.svg?style=shield&circle-token=:circle-token
-)](https://circleci.com/gh/yggdrasil-network/yggdrasil-go)
+[![Build status](https://github.com/yggdrasil-network/yggdrasil-go/actions/workflows/ci.yml/badge.svg)](https://github.com/yggdrasil-network/yggdrasil-go/actions/workflows/ci.yml)
 
 ## Introduction
 
@@ -11,44 +10,21 @@ allows pretty much any IPv6-capable application to communicate securely with
 other Yggdrasil nodes. Yggdrasil does not require you to have IPv6 Internet
 connectivity - it also works over IPv4.
 
-Although Yggdrasil shares many similarities with
-[cjdns](https://github.com/cjdelisle/cjdns), it employs a different routing
-algorithm based on a globally-agreed spanning tree and greedy routing in a
-metric space, and aims to implement some novel local backpressure routing
-techniques. In theory, Yggdrasil should scale well on networks with
-internet-like topologies.
-
 ## Supported Platforms
 
-We actively support the following platforms, and packages are available for
-some of the below:
+Yggdrasil works on a number of platforms, including Linux, macOS, Ubiquiti
+EdgeRouter, VyOS, Windows, FreeBSD, OpenBSD and OpenWrt.
 
-- Linux
-  - `.deb` and `.rpm` packages are built by CI for Debian and Red Hat-based
-    distributions
-  - Void and Arch packages also available within their respective repositories
-- macOS
-  - `.pkg` packages are built by CI
-- Ubiquiti EdgeOS
-  - `.deb` Vyatta packages are built by CI
-- Windows
-- FreeBSD
-- OpenBSD
-- NetBSD
-
-Please see our [Platforms](https://yggdrasil-network.github.io/) pages for more
-specific information about each of our supported platforms, including
-installation steps and caveats.
-
-You may also find other platform-specific wrappers, scripts or tools in the
-`contrib` folder.
+Please see our [Installation](https://yggdrasil-network.github.io/installation.html)
+page for more information. You may also find other platform-specific wrappers, scripts
+or tools in the `contrib` folder.
 
 ## Building
 
 If you want to build from source, as opposed to installing one of the pre-built
 packages:
 
-1. Install [Go](https://golang.org) (requires Go 1.11 or later)
+1. Install [Go](https://golang.org) (requires Go 1.22 or later)
 2. Clone this repository
 2. Run `./build`
 
@@ -80,6 +56,7 @@ other configuration such as listen addresses or multicast addresses, etc.
 ### Run Yggdrasil
 
 To run with the generated static configuration:
+
 ```
 ./yggdrasil -useconffile /path/to/yggdrasil.conf
 ```
@@ -97,21 +74,18 @@ by giving the Yggdrasil binary the `CAP_NET_ADMIN` capability.
 
 ## Documentation
 
-Documentation is available on our [GitHub
-Pages](https://yggdrasil-network.github.io) site, or in the base submodule
-repository within `doc/yggdrasil-network.github.io`.
+Documentation is available [on our website](https://yggdrasil-network.github.io).
 
-- [Configuration file options](https://yggdrasil-network.github.io/configuration.html)
-- [Platform-specific documentation](https://yggdrasil-network.github.io/platforms.html)
+- [Installing Yggdrasil](https://yggdrasil-network.github.io/installation.html)
+- [Configuring Yggdrasil](https://yggdrasil-network.github.io/configuration.html)
 - [Frequently asked questions](https://yggdrasil-network.github.io/faq.html)
-- [Admin API documentation](https://yggdrasil-network.github.io/admin.html)
 - [Version changelog](CHANGELOG.md)
 
 ## Community
 
 Feel free to join us on our [Matrix
 channel](https://matrix.to/#/#yggdrasil:matrix.org) at `#yggdrasil:matrix.org`
-or in the `#yggdrasil` IRC channel on Freenode.
+or in the `#yggdrasil` IRC channel on [libera.chat](https://libera.chat).
 
 ## License
 

build

@@ -2,47 +2,37 @@
 
 set -ef
 
-PKGSRC=${PKGSRC:-github.com/yggdrasil-network/yggdrasil-go/src/yggdrasil}
+PKGSRC=${PKGSRC:-github.com/yggdrasil-network/yggdrasil-go/src/version}
 PKGNAME=${PKGNAME:-$(sh contrib/semver/name.sh)}
 PKGVER=${PKGVER:-$(sh contrib/semver/version.sh --bare)}
 
 LDFLAGS="-X $PKGSRC.buildName=$PKGNAME -X $PKGSRC.buildVersion=$PKGVER"
+ARGS="-v"
 
-while getopts "udaitc:l:" option
+while getopts "utc:l:dro:p" option
 do
-  case "${option}"
+  case "$option"
   in
   u) UPX=true;;
-  d) DEBUG=true;;
-  i) IOS=true;;
-  a) ANDROID=true;;
   t) TABLES=true;;
   c) GCFLAGS="$GCFLAGS $OPTARG";;
   l) LDFLAGS="$LDFLAGS $OPTARG";;
+  d) ARGS="$ARGS -tags debug" DEBUG=true;;
+  r) ARGS="$ARGS -race";;
+  o) ARGS="$ARGS -o $OPTARG";;
+  p) ARGS="$ARGS -buildmode=pie";;
   esac
 done
 
-if [ -z $TABLES ]; then
-  STRIP="-s -w"
+if [ -z $TABLES ] && [ -z $DEBUG ]; then
+  LDFLAGS="$LDFLAGS -s -w"
 fi
 
-if [ $IOS ]; then
-  echo "Building framework for iOS"
-  gomobile bind -target ios -tags mobile -ldflags="$LDFLAGS $STRIP" -gcflags="$GCFLAGS" github.com/yggdrasil-network/yggdrasil-go/src/yggdrasil
-elif [ $ANDROID ]; then
-  echo "Building aar for Android"
-  gomobile bind -target android -tags mobile -ldflags="$LDFLAGS $STRIP" -gcflags="$GCFLAGS" github.com/yggdrasil-network/yggdrasil-go/src/yggdrasil
-else
-  for CMD in `ls cmd/` ; do
-    echo "Building: $CMD"
+for CMD in yggdrasil yggdrasilctl ; do
+  echo "Building: $CMD"
+  go build $ARGS -ldflags="$LDFLAGS" -gcflags="$GCFLAGS" ./cmd/$CMD
 
-    if [ $DEBUG ]; then
-      go build -ldflags="$LDFLAGS" -gcflags="$GCFLAGS" -tags debug -v ./cmd/$CMD
-    else
-      go build -ldflags="$LDFLAGS $STRIP" -gcflags="$GCFLAGS" -v ./cmd/$CMD
-    fi
-    if [ $UPX ]; then
-      upx --brute $CMD
-    fi
-  done
-fi
+  if [ $UPX ]; then
+    upx --brute $CMD
+  fi
+done

cmd/genkeys/main.go

@@ -0,0 +1,93 @@
+/*
+This file generates crypto keys.
+It prints out a new set of keys each time if finds a "better" one.
+By default, "better" means a higher NodeID (-> higher IP address).
+This is because the IP address format can compress leading 1s in the address, to increase the number of ID bits in the address.
+
+If run with the "-sig" flag, it generates signing keys instead.
+A "better" signing key means one with a higher TreeID.
+This only matters if it's high enough to make you the root of the tree.
+*/
+package main
+
+import (
+	"crypto/ed25519"
+	"encoding/hex"
+	"fmt"
+	"net"
+	"runtime"
+	"time"
+
+	"suah.dev/protect"
+
+	"github.com/yggdrasil-network/yggdrasil-go/src/address"
+)
+
+type keySet struct {
+	priv ed25519.PrivateKey
+	pub  ed25519.PublicKey
+	count uint64
+}
+
+func main() {
+	if err := protect.Pledge("stdio"); err != nil {
+		panic(err)
+	}
+
+	threads := runtime.GOMAXPROCS(0)
+	fmt.Println("Threads:", threads)
+	start := time.Now()
+	var totalKeys uint64
+	totalKeys = 0
+	var currentBest ed25519.PublicKey
+	newKeys := make(chan keySet, threads)
+	for i := 0; i < threads; i++ {
+		go doKeys(newKeys)
+	}
+	for {
+		newKey := <-newKeys
+		if isBetter(currentBest, newKey.pub) || len(currentBest) == 0 {
+			totalKeys += newKey.count
+			currentBest = newKey.pub
+			fmt.Println("-----", time.Since(start), "---", totalKeys, "keys tried")
+			fmt.Println("Priv:", hex.EncodeToString(newKey.priv))
+			fmt.Println("Pub:", hex.EncodeToString(newKey.pub))
+			addr := address.AddrForKey(newKey.pub)
+			fmt.Println("IP:", net.IP(addr[:]).String())
+		}
+	}
+}
+
+func isBetter(oldPub, newPub ed25519.PublicKey) bool {
+	for idx := range oldPub {
+		if newPub[idx] < oldPub[idx] {
+			return true
+		}
+		if newPub[idx] > oldPub[idx] {
+			break
+		}
+	}
+	return false
+}
+
+func doKeys(out chan<- keySet) {
+	bestKey := make(ed25519.PublicKey, ed25519.PublicKeySize)
+	var count uint64
+	count = 0
+	for idx := range bestKey {
+		bestKey[idx] = 0xff
+	}
+	for {
+		pub, priv, err := ed25519.GenerateKey(nil)
+		count++
+		if err != nil {
+			panic(err)
+		}
+		if !isBetter(bestKey, pub) {
+			continue
+		}
+		bestKey = pub
+		out <- keySet{priv, pub, count}
+		count = 0
+	}
+}

cmd/yggdrasil/chuser_other.go

@@ -0,0 +1,10 @@
+//go:build !aix && !darwin && !dragonfly && !freebsd && !linux && !netbsd && !openbsd && !solaris
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris
+
+package main
+
+import "errors"
+
+func chuser(user string) error {
+	return errors.New("setting uid/gid is not supported on this platform")
+}

cmd/yggdrasil/chuser_unix.go

@@ -0,0 +1,63 @@
+//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package main
+
+import (
+	"fmt"
+	"os/user"
+	"strconv"
+	"strings"
+
+	"golang.org/x/sys/unix"
+)
+
+func chuser(input string) error {
+	givenUser, givenGroup, _ := strings.Cut(input, ":")
+	if givenUser == "" {
+		return fmt.Errorf("user is empty")
+	}
+	if strings.Contains(input, ":") && givenGroup == "" {
+		return fmt.Errorf("group is empty")
+	}
+
+	var (
+		err      error
+		usr      *user.User
+		grp      *user.Group
+		uid, gid int
+	)
+
+	if usr, err = user.LookupId(givenUser); err != nil {
+		if usr, err = user.Lookup(givenUser); err != nil {
+			return err
+		}
+	}
+	if uid, err = strconv.Atoi(usr.Uid); err != nil {
+		return err
+	}
+
+	if givenGroup != "" {
+		if grp, err = user.LookupGroupId(givenGroup); err != nil {
+			if grp, err = user.LookupGroup(givenGroup); err != nil {
+				return err
+			}
+		}
+
+		gid, _ = strconv.Atoi(grp.Gid)
+	} else {
+		gid, _ = strconv.Atoi(usr.Gid)
+	}
+
+	if err := unix.Setgroups([]int{gid}); err != nil {
+		return fmt.Errorf("setgroups: %d: %v", gid, err)
+	}
+	if err := unix.Setgid(gid); err != nil {
+		return fmt.Errorf("setgid: %d: %v", gid, err)
+	}
+	if err := unix.Setuid(uid); err != nil {
+		return fmt.Errorf("setuid: %d: %v", uid, err)
+	}
+
+	return nil
+}

cmd/yggdrasil/chuser_unix_test.go

@@ -0,0 +1,80 @@
+//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package main
+
+import (
+	"os/user"
+	"testing"
+)
+
+// Usernames must not contain a number sign.
+func TestEmptyString(t *testing.T) {
+	if chuser("") == nil {
+		t.Fatal("the empty string is not a valid user")
+	}
+}
+
+// Either omit delimiter and group, or omit both.
+func TestEmptyGroup(t *testing.T) {
+	if chuser("0:") == nil {
+		t.Fatal("the empty group is not allowed")
+	}
+}
+
+// Either user only or user and group.
+func TestGroupOnly(t *testing.T) {
+	if chuser(":0") == nil {
+		t.Fatal("group only is not allowed")
+	}
+}
+
+// Usenames must not contain the number sign.
+func TestInvalidUsername(t *testing.T) {
+	const username = "#user"
+	if chuser(username) == nil {
+		t.Fatalf("'%s' is not a valid username", username)
+	}
+}
+
+// User IDs must be non-negative.
+func TestInvalidUserid(t *testing.T) {
+	if chuser("-1") == nil {
+		t.Fatal("User ID cannot be negative")
+	}
+}
+
+// Change to the current user by ID.
+func TestCurrentUserid(t *testing.T) {
+	usr, err := user.Current()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if usr.Uid != "0" {
+		t.Skip("setgroups(2): Only the superuser may set new groups.")
+	}
+
+	if err = chuser(usr.Uid); err != nil {
+		t.Fatal(err)
+	}
+}
+
+// Change to a common user by name.
+func TestCommonUsername(t *testing.T) {
+	usr, err := user.Current()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if usr.Uid != "0" {
+		t.Skip("setgroups(2): Only the superuser may set new groups.")
+	}
+
+	if err := chuser("nobody"); err != nil {
+		if _, ok := err.(user.UnknownUserError); ok {
+			t.Skip(err)
+		}
+		t.Fatal(err)
+	}
+}

cmd/yggdrasil/main.go

@@ -1,291 +1,364 @@
 package main
 
 import (
-	"bytes"
+	"context"
+	"crypto/ed25519"
+	"encoding/hex"
 	"encoding/json"
 	"flag"
 	"fmt"
-	"io/ioutil"
+	"net"
 	"os"
 	"os/signal"
+	"regexp"
 	"strings"
 	"syscall"
 
-	"golang.org/x/text/encoding/unicode"
+	"suah.dev/protect"
 
 	"github.com/gologme/log"
-	"github.com/hjson/hjson-go"
+	gsyslog "github.com/hashicorp/go-syslog"
+	"github.com/hjson/hjson-go/v4"
 	"github.com/kardianos/minwinsvc"
-	"github.com/mitchellh/mapstructure"
 
+	"github.com/yggdrasil-network/yggdrasil-go/src/address"
+	"github.com/yggdrasil-network/yggdrasil-go/src/admin"
 	"github.com/yggdrasil-network/yggdrasil-go/src/config"
-	"github.com/yggdrasil-network/yggdrasil-go/src/yggdrasil"
+	"github.com/yggdrasil-network/yggdrasil-go/src/ipv6rwc"
+
+	"github.com/yggdrasil-network/yggdrasil-go/src/core"
+	"github.com/yggdrasil-network/yggdrasil-go/src/multicast"
+	"github.com/yggdrasil-network/yggdrasil-go/src/tun"
+	"github.com/yggdrasil-network/yggdrasil-go/src/version"
 )
 
-type nodeConfig = config.NodeConfig
-type Core = yggdrasil.Core
-
 type node struct {
-	core Core
-}
-
-func readConfig(useconf *bool, useconffile *string, normaliseconf *bool) *nodeConfig {
-	// Use a configuration file. If -useconf, the configuration will be read
-	// from stdin. If -useconffile, the configuration will be read from the
-	// filesystem.
-	var conf []byte
-	var err error
-	if *useconffile != "" {
-		// Read the file from the filesystem
-		conf, err = ioutil.ReadFile(*useconffile)
-	} else {
-		// Read the file from stdin.
-		conf, err = ioutil.ReadAll(os.Stdin)
-	}
-	if err != nil {
-		panic(err)
-	}
-	// If there's a byte order mark - which Windows 10 is now incredibly fond of
-	// throwing everywhere when it's converting things into UTF-16 for the hell
-	// of it - remove it and decode back down into UTF-8. This is necessary
-	// because hjson doesn't know what to do with UTF-16 and will panic
-	if bytes.Compare(conf[0:2], []byte{0xFF, 0xFE}) == 0 ||
-		bytes.Compare(conf[0:2], []byte{0xFE, 0xFF}) == 0 {
-		utf := unicode.UTF16(unicode.BigEndian, unicode.UseBOM)
-		decoder := utf.NewDecoder()
-		conf, err = decoder.Bytes(conf)
-		if err != nil {
-			panic(err)
-		}
-	}
-	// Generate a new configuration - this gives us a set of sane defaults -
-	// then parse the configuration we loaded above on top of it. The effect
-	// of this is that any configuration item that is missing from the provided
-	// configuration will use a sane default.
-	cfg := config.GenerateConfig()
-	var dat map[string]interface{}
-	if err := hjson.Unmarshal(conf, &dat); err != nil {
-		panic(err)
-	}
-	confJson, err := json.Marshal(dat)
-	if err != nil {
-		panic(err)
-	}
-	json.Unmarshal(confJson, &cfg)
-	// For now we will do a little bit to help the user adjust their
-	// configuration to match the new configuration format, as some of the key
-	// names have changed recently.
-	changes := map[string]string{
-		"Multicast":      "",
-		"ReadTimeout":    "",
-		"LinkLocal":      "MulticastInterfaces",
-		"BoxPub":         "EncryptionPublicKey",
-		"BoxPriv":        "EncryptionPrivateKey",
-		"SigPub":         "SigningPublicKey",
-		"SigPriv":        "SigningPrivateKey",
-		"AllowedBoxPubs": "AllowedEncryptionPublicKeys",
-	}
-	// Loop over the mappings aove and see if we have anything to fix.
-	for from, to := range changes {
-		if _, ok := dat[from]; ok {
-			if to == "" {
-				if !*normaliseconf {
-					log.Println("Warning: Config option", from, "is deprecated")
-				}
-			} else {
-				if !*normaliseconf {
-					log.Println("Warning: Config option", from, "has been renamed - please change to", to)
-				}
-				// If the configuration file doesn't already contain a line with the
-				// new name then set it to the old value. This makes sure that we
-				// don't overwrite something that was put there intentionally.
-				if _, ok := dat[to]; !ok {
-					dat[to] = dat[from]
-				}
-			}
-		}
-	}
-	// Check to see if the peers are in a parsable format, if not then default
-	// them to the TCP scheme
-	if peers, ok := dat["Peers"].([]interface{}); ok {
-		for index, peer := range peers {
-			uri := peer.(string)
-			if strings.HasPrefix(uri, "tcp://") || strings.HasPrefix(uri, "socks://") {
-				continue
-			}
-			if strings.HasPrefix(uri, "tcp:") {
-				uri = uri[4:]
-			}
-			(dat["Peers"].([]interface{}))[index] = "tcp://" + uri
-		}
-	}
-	// Now do the same with the interface peers
-	if interfacepeers, ok := dat["InterfacePeers"].(map[string]interface{}); ok {
-		for intf, peers := range interfacepeers {
-			for index, peer := range peers.([]interface{}) {
-				uri := peer.(string)
-				if strings.HasPrefix(uri, "tcp://") || strings.HasPrefix(uri, "socks://") {
-					continue
-				}
-				if strings.HasPrefix(uri, "tcp:") {
-					uri = uri[4:]
-				}
-				((dat["InterfacePeers"].(map[string]interface{}))[intf]).([]interface{})[index] = "tcp://" + uri
-			}
-		}
-	}
-	// Do a quick check for old-format Listen statement so that mapstructure
-	// doesn't fail and crash
-	if listen, ok := dat["Listen"].(string); ok {
-		if strings.HasPrefix(listen, "tcp://") {
-			dat["Listen"] = []string{listen}
-		} else {
-			dat["Listen"] = []string{"tcp://" + listen}
-		}
-	}
-	// Overlay our newly mapped configuration onto the autoconf node config that
-	// we generated above.
-	if err = mapstructure.Decode(dat, &cfg); err != nil {
-		panic(err)
-	}
-	return cfg
-}
-
-// Generates a new configuration and returns it in HJSON format. This is used
-// with -genconf.
-func doGenconf(isjson bool) string {
-	cfg := config.GenerateConfig()
-	var bs []byte
-	var err error
-	if isjson {
-		bs, err = json.MarshalIndent(cfg, "", "  ")
-	} else {
-		bs, err = hjson.Marshal(cfg)
-	}
-	if err != nil {
-		panic(err)
-	}
-	return string(bs)
+	core      *core.Core
+	tun       *tun.TunAdapter
+	multicast *multicast.Multicast
+	admin     *admin.AdminSocket
 }
 
 // The main function is responsible for configuring and starting Yggdrasil.
 func main() {
-	// Configure the command line parameters.
+	// Not all operations are coverable with pledge(2), so immediately
+	// limit file system access with unveil(2), effectively preventing
+	// "proc exec" promises right from the start:
+	//
+	// - read arbitrary config file
+	// - create/write arbitrary log file
+	// - read/write/chmod/remove admin socket, if at all
+	if err := protect.Unveil("/", "rwc"); err != nil {
+		panic(fmt.Sprintf("unveil: / rwc: %v", err))
+	}
+	if err := protect.UnveilBlock(); err != nil {
+		panic(fmt.Sprintf("unveil: %v", err))
+	}
+
 	genconf := flag.Bool("genconf", false, "print a new config to stdout")
 	useconf := flag.Bool("useconf", false, "read HJSON/JSON config from stdin")
 	useconffile := flag.String("useconffile", "", "read HJSON/JSON config from specified file path")
 	normaliseconf := flag.Bool("normaliseconf", false, "use in combination with either -useconf or -useconffile, outputs your configuration normalised")
+	exportkey := flag.Bool("exportkey", false, "use in combination with either -useconf or -useconffile, outputs your private key in PEM format")
 	confjson := flag.Bool("json", false, "print configuration from -genconf or -normaliseconf as JSON instead of HJSON")
 	autoconf := flag.Bool("autoconf", false, "automatic mode (dynamic IP, peer with IPv6 neighbors)")
-	version := flag.Bool("version", false, "prints the version of this build")
-	logging := flag.String("logging", "info,warn,error", "comma-separated list of logging levels to enable")
+	ver := flag.Bool("version", false, "prints the version of this build")
+	logto := flag.String("logto", "stdout", "file path to log to, \"syslog\" or \"stdout\"")
+	getaddr := flag.Bool("address", false, "use in combination with either -useconf or -useconffile, outputs your IPv6 address")
+	getsnet := flag.Bool("subnet", false, "use in combination with either -useconf or -useconffile, outputs your IPv6 subnet")
+	getpkey := flag.Bool("publickey", false, "use in combination with either -useconf or -useconffile, outputs your public key")
+	loglevel := flag.String("loglevel", "info", "loglevel to enable")
+	chuserto := flag.String("user", "", "user (and, optionally, group) to set UID/GID to")
 	flag.Parse()
 
-	var cfg *nodeConfig
+	done := make(chan struct{})
+	defer close(done)
+
+	// Catch interrupts from the operating system to exit gracefully.
+	ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
+
+	// Create a new logger that logs output to stdout.
+	var logger *log.Logger
+	switch *logto {
+	case "stdout":
+		logger = log.New(os.Stdout, "", log.Flags())
+
+	case "syslog":
+		if syslogger, err := gsyslog.NewLogger(gsyslog.LOG_NOTICE, "DAEMON", version.BuildName()); err == nil {
+			logger = log.New(syslogger, "", log.Flags()&^(log.Ldate|log.Ltime))
+		}
+
+	default:
+		if logfd, err := os.OpenFile(*logto, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644); err == nil {
+			logger = log.New(logfd, "", log.Flags())
+		}
+	}
+	if logger == nil {
+		logger = log.New(os.Stdout, "", log.Flags())
+		logger.Warnln("Logging defaulting to stdout")
+	}
+	if *normaliseconf {
+		setLogLevel("error", logger)
+	} else {
+		setLogLevel(*loglevel, logger)
+	}
+
+	cfg := config.GenerateConfig()
 	var err error
 	switch {
-	case *version:
-		fmt.Println("Build name:", yggdrasil.GetBuildName())
-		fmt.Println("Build version:", yggdrasil.GetBuildVersion())
-		os.Exit(0)
+	case *ver:
+		fmt.Println("Build name:", version.BuildName())
+		fmt.Println("Build version:", version.BuildVersion())
+		return
+
 	case *autoconf:
 		// Use an autoconf-generated config, this will give us random keys and
-		// port numbers, and will use an automatically selected TUN/TAP interface.
-		cfg = config.GenerateConfig()
-	case *useconffile != "" || *useconf:
-		// Read the configuration from either stdin or from the filesystem
-		cfg = readConfig(useconf, useconffile, normaliseconf)
-		// If the -normaliseconf option was specified then remarshal the above
-		// configuration and print it back to stdout. This lets the user update
-		// their configuration file with newly mapped names (like above) or to
-		// convert from plain JSON to commented HJSON.
-		if *normaliseconf {
-			var bs []byte
-			if *confjson {
-				bs, err = json.MarshalIndent(cfg, "", "  ")
-			} else {
-				bs, err = hjson.Marshal(cfg)
+		// port numbers, and will use an automatically selected TUN interface.
+
+	case *useconf:
+		if _, err := cfg.ReadFrom(os.Stdin); err != nil {
+			panic(err)
+		}
+
+	case *useconffile != "":
+		f, err := os.Open(*useconffile)
+		if err != nil {
+			panic(err)
+		}
+		if _, err := cfg.ReadFrom(f); err != nil {
+			panic(err)
+		}
+		_ = f.Close()
+
+	case *genconf:
+		cfg.AdminListen = ""
+		var bs []byte
+		if *confjson {
+			bs, err = json.MarshalIndent(cfg, "", "  ")
+		} else {
+			bs, err = hjson.Marshal(cfg)
+		}
+		if err != nil {
+			panic(err)
+		}
+		fmt.Println(string(bs))
+		return
+
+	default:
+		fmt.Println("Usage:")
+		flag.PrintDefaults()
+
+		if *getaddr || *getsnet {
+			fmt.Println("\nError: You need to specify some config data using -useconf or -useconffile.")
+		}
+		return
+	}
+
+	privateKey := ed25519.PrivateKey(cfg.PrivateKey)
+	publicKey := privateKey.Public().(ed25519.PublicKey)
+
+	switch {
+	case *getaddr:
+		addr := address.AddrForKey(publicKey)
+		ip := net.IP(addr[:])
+		fmt.Println(ip.String())
+		return
+
+	case *getsnet:
+		snet := address.SubnetForKey(publicKey)
+		ipnet := net.IPNet{
+			IP:   append(snet[:], 0, 0, 0, 0, 0, 0, 0, 0),
+			Mask: net.CIDRMask(len(snet)*8, 128),
+		}
+		fmt.Println(ipnet.String())
+		return
+
+	case *getpkey:
+		fmt.Println(hex.EncodeToString(publicKey))
+		return
+
+	case *normaliseconf:
+		cfg.AdminListen = ""
+		if cfg.PrivateKeyPath != "" {
+			cfg.PrivateKey = nil
+		}
+		var bs []byte
+		if *confjson {
+			bs, err = json.MarshalIndent(cfg, "", "  ")
+		} else {
+			bs, err = hjson.Marshal(cfg)
+		}
+		if err != nil {
+			panic(err)
+		}
+		fmt.Println(string(bs))
+		return
+
+	case *exportkey:
+		pem, err := cfg.MarshalPEMPrivateKey()
+		if err != nil {
+			panic(err)
+		}
+		fmt.Println(string(pem))
+		return
+	}
+
+	n := &node{}
+
+	// Set up the Yggdrasil node itself.
+	{
+		iprange := net.IPNet{
+			IP:   net.ParseIP("200::"),
+			Mask: net.CIDRMask(7, 128),
+		}
+		options := []core.SetupOption{
+			core.NodeInfo(cfg.NodeInfo),
+			core.NodeInfoPrivacy(cfg.NodeInfoPrivacy),
+			core.PeerFilter(func(ip net.IP) bool {
+				return !iprange.Contains(ip)
+			}),
+		}
+		for _, addr := range cfg.Listen {
+			options = append(options, core.ListenAddress(addr))
+		}
+		for _, peer := range cfg.Peers {
+			options = append(options, core.Peer{URI: peer})
+		}
+		for intf, peers := range cfg.InterfacePeers {
+			for _, peer := range peers {
+				options = append(options, core.Peer{URI: peer, SourceInterface: intf})
 			}
+		}
+		for _, allowed := range cfg.AllowedPublicKeys {
+			k, err := hex.DecodeString(allowed)
 			if err != nil {
 				panic(err)
 			}
-			fmt.Println(string(bs))
-			return
+			options = append(options, core.AllowedPublicKey(k[:]))
 		}
-	case *genconf:
-		// Generate a new configuration and print it to stdout.
-		fmt.Println(doGenconf(*confjson))
-	default:
-		// No flags were provided, therefore print the list of flags to stdout.
-		flag.PrintDefaults()
+		if n.core, err = core.New(cfg.Certificate, logger, options...); err != nil {
+			panic(err)
+		}
+		address, subnet := n.core.Address(), n.core.Subnet()
+		logger.Printf("Your public key is %s", hex.EncodeToString(n.core.PublicKey()))
+		logger.Printf("Your IPv6 address is %s", address.String())
+		logger.Printf("Your IPv6 subnet is %s", subnet.String())
 	}
-	// Have we got a working configuration? If we don't then it probably means
-	// that neither -autoconf, -useconf or -useconffile were set above. Stop
-	// if we don't.
-	if cfg == nil {
-		return
-	}
-	// Create a new logger that logs output to stdout.
-	logger := log.New(os.Stdout, "", log.Flags())
-	//logger.EnableLevel("error")
-	//logger.EnableLevel("warn")
-	//logger.EnableLevel("info")
-	if levels := strings.Split(*logging, ","); len(levels) > 0 {
-		for _, level := range levels {
-			l := strings.TrimSpace(level)
-			switch l {
-			case "error", "warn", "info", "trace", "debug":
-				logger.EnableLevel(l)
-			default:
-				continue
-			}
+
+	// Set up the admin socket.
+	{
+		options := []admin.SetupOption{
+			admin.ListenAddress(cfg.AdminListen),
+		}
+		if cfg.LogLookups {
+			options = append(options, admin.LogLookups{})
+		}
+		if n.admin, err = admin.New(n.core, logger, options...); err != nil {
+			panic(err)
+		}
+		if n.admin != nil {
+			n.admin.SetupAdminHandlers()
 		}
 	}
-	// Setup the Yggdrasil node itself. The node{} type includes a Core, so we
-	// don't need to create this manually.
-	n := node{}
-	// Now that we have a working configuration, we can now actually start
-	// Yggdrasil. This will start the router, switch, DHT node, TCP and UDP
-	// sockets, TUN/TAP adapter and multicast discovery port.
-	if err := n.core.Start(cfg, logger); err != nil {
-		logger.Errorln("An error occurred during startup")
-		panic(err)
-	}
-	// The Stop function ensures that the TUN/TAP adapter is correctly shut down
-	// before the program exits.
-	defer func() {
-		n.core.Stop()
-	}()
-	// Make some nice output that tells us what our IPv6 address and subnet are.
-	// This is just logged to stdout for the user.
-	address := n.core.GetAddress()
-	subnet := n.core.GetSubnet()
-	logger.Infof("Your IPv6 address is %s", address.String())
-	logger.Infof("Your IPv6 subnet is %s", subnet.String())
-	// Catch interrupts from the operating system to exit gracefully.
-	c := make(chan os.Signal, 1)
-	r := make(chan os.Signal, 1)
-	signal.Notify(c, os.Interrupt, syscall.SIGTERM)
-	signal.Notify(r, os.Interrupt, syscall.SIGHUP)
-	// Create a function to capture the service being stopped on Windows.
-	winTerminate := func() {
-		c <- os.Interrupt
-	}
-	minwinsvc.SetOnExit(winTerminate)
-	// Wait for the terminate/interrupt signal. Once a signal is received, the
-	// deferred Stop function above will run which will shut down TUN/TAP.
-	for {
-		select {
-		case _ = <-r:
-			if *useconffile != "" {
-				cfg = readConfig(useconf, useconffile, normaliseconf)
-				n.core.UpdateConfig(cfg)
-			} else {
-				logger.Errorln("Reloading config at runtime is only possible with -useconffile")
-			}
-		case _ = <-c:
-			goto exit
+
+	// Set up the multicast module.
+	{
+		options := []multicast.SetupOption{}
+		for _, intf := range cfg.MulticastInterfaces {
+			options = append(options, multicast.MulticastInterface{
+				Regex:    regexp.MustCompile(intf.Regex),
+				Beacon:   intf.Beacon,
+				Listen:   intf.Listen,
+				Port:     intf.Port,
+				Priority: uint8(intf.Priority),
+				Password: intf.Password,
+			})
+		}
+		if n.multicast, err = multicast.New(n.core, logger, options...); err != nil {
+			panic(err)
+		}
+		if n.admin != nil && n.multicast != nil {
+			n.multicast.SetupAdminHandlers(n.admin)
+		}
+	}
+
+	// Set up the TUN module.
+	{
+		options := []tun.SetupOption{
+			tun.InterfaceName(cfg.IfName),
+			tun.InterfaceMTU(cfg.IfMTU),
+		}
+		if n.tun, err = tun.New(ipv6rwc.NewReadWriteCloser(n.core), logger, options...); err != nil {
+			panic(err)
+		}
+		if n.admin != nil && n.tun != nil {
+			n.tun.SetupAdminHandlers(n.admin)
+		}
+	}
+
+	//Windows service shutdown
+	minwinsvc.SetOnExit(func() {
+		logger.Infof("Shutting down service ...")
+		cancel()
+		// Wait for all parts to shutdown properly
+		<-done
+	})
+
+	// Change user if requested
+	if *chuserto != "" {
+		err = chuser(*chuserto)
+		if err != nil {
+			panic(err)
+		}
+	}
+
+	// Promise final modes of operation.  At this point, if at all:
+	// - raw socket is created/open
+	// - admin socket is created/open
+	// - privileges are dropped to non-root user
+	//
+	// Peers, InterfacePeers, Listen can be UNIX sockets;
+	// Go's net.Listen.Close() deletes files on shutdown.
+	promises := []string{"stdio", "cpath", "inet", "unix", "dns"}
+	if len(cfg.MulticastInterfaces) > 0 {
+		promises = append(promises, "mcast")
+	}
+	if err := protect.Pledge(strings.Join(promises, " ")); err != nil {
+		panic(fmt.Sprintf("pledge: %v: %v", promises, err))
+	}
+
+	// Block until we are told to shut down.
+	<-ctx.Done()
+
+	// Shut down the node.
+	_ = n.admin.Stop()
+	_ = n.multicast.Stop()
+	_ = n.tun.Stop()
+	n.core.Stop()
+}
+
+func setLogLevel(loglevel string, logger *log.Logger) {
+	levels := [...]string{"error", "warn", "info", "debug", "trace"}
+	loglevel = strings.ToLower(loglevel)
+
+	contains := func() bool {
+		for _, l := range levels {
+			if l == loglevel {
+				return true
+			}
+		}
+		return false
+	}
+
+	if !contains() { // set default log level
+		logger.Infoln("Loglevel parse failed. Set default level(info)")
+		loglevel = "info"
+	}
+
+	for _, l := range levels {
+		logger.EnableLevel(l)
+		if l == loglevel {
+			break
 		}
 	}
-exit:
 }

cmd/yggdrasilctl/cmd_line_env.go

@@ -0,0 +1,89 @@
+package main
+
+import (
+	"bytes"
+	"flag"
+	"fmt"
+	"log"
+	"os"
+
+	"github.com/hjson/hjson-go/v4"
+	"golang.org/x/text/encoding/unicode"
+
+	"github.com/yggdrasil-network/yggdrasil-go/src/config"
+)
+
+type CmdLineEnv struct {
+	args             []string
+	endpoint, server string
+	injson, ver      bool
+}
+
+func newCmdLineEnv() CmdLineEnv {
+	var cmdLineEnv CmdLineEnv
+	cmdLineEnv.endpoint = config.GetDefaults().DefaultAdminListen
+	return cmdLineEnv
+}
+
+func (cmdLineEnv *CmdLineEnv) parseFlagsAndArgs() {
+	flag.Usage = func() {
+		fmt.Fprintf(flag.CommandLine.Output(), "Usage: %s [options] command [key=value] [key=value] ...\n\n", os.Args[0])
+		fmt.Println("Options:")
+		flag.PrintDefaults()
+		fmt.Println()
+		fmt.Println("Please note that options must always specified BEFORE the command\non the command line or they will be ignored.")
+		fmt.Println()
+		fmt.Println("Commands:\n  - Use \"list\" for a list of available commands")
+		fmt.Println()
+		fmt.Println("Examples:")
+		fmt.Println("  - ", os.Args[0], "list")
+		fmt.Println("  - ", os.Args[0], "getPeers")
+		fmt.Println("  - ", os.Args[0], "-endpoint=tcp://localhost:9001 getPeers")
+		fmt.Println("  - ", os.Args[0], "-endpoint=unix:///var/run/ygg.sock getPeers")
+	}
+
+	server := flag.String("endpoint", cmdLineEnv.endpoint, "Admin socket endpoint")
+	injson := flag.Bool("json", false, "Output in JSON format (as opposed to pretty-print)")
+	ver := flag.Bool("version", false, "Prints the version of this build")
+
+	flag.Parse()
+
+	cmdLineEnv.args = flag.Args()
+	cmdLineEnv.server = *server
+	cmdLineEnv.injson = *injson
+	cmdLineEnv.ver = *ver
+}
+
+func (cmdLineEnv *CmdLineEnv) setEndpoint(logger *log.Logger) {
+	if cmdLineEnv.server == cmdLineEnv.endpoint {
+		if cfg, err := os.ReadFile(config.GetDefaults().DefaultConfigFile); err == nil {
+			if bytes.Equal(cfg[0:2], []byte{0xFF, 0xFE}) ||
+				bytes.Equal(cfg[0:2], []byte{0xFE, 0xFF}) {
+				utf := unicode.UTF16(unicode.BigEndian, unicode.UseBOM)
+				decoder := utf.NewDecoder()
+				cfg, err = decoder.Bytes(cfg)
+				if err != nil {
+					panic(err)
+				}
+			}
+			var dat map[string]interface{}
+			if err := hjson.Unmarshal(cfg, &dat); err != nil {
+				panic(err)
+			}
+			if ep, ok := dat["AdminListen"].(string); ok && (ep != "none" && ep != "") {
+				cmdLineEnv.endpoint = ep
+				logger.Println("Found platform default config file", config.GetDefaults().DefaultConfigFile)
+				logger.Println("Using endpoint", cmdLineEnv.endpoint, "from AdminListen")
+			} else {
+				logger.Println("Configuration file doesn't contain appropriate AdminListen option")
+				logger.Println("Falling back to platform default", config.GetDefaults().DefaultAdminListen)
+			}
+		} else {
+			logger.Println("Can't open config file from default location", config.GetDefaults().DefaultConfigFile)
+			logger.Println("Falling back to platform default", config.GetDefaults().DefaultAdminListen)
+		}
+	} else {
+		cmdLineEnv.endpoint = cmdLineEnv.server
+		logger.Println("Using endpoint", cmdLineEnv.endpoint, "from command line")
+	}
+}

cmd/yggdrasilctl/main.go

@@ -6,100 +6,70 @@ import (
 	"errors"
 	"flag"
 	"fmt"
-	"io/ioutil"
 	"log"
 	"net"
 	"net/url"
 	"os"
-	"sort"
-	"strconv"
 	"strings"
+	"time"
 
-	"golang.org/x/text/encoding/unicode"
+	"suah.dev/protect"
 
-	"github.com/hjson/hjson-go"
-	"github.com/yggdrasil-network/yggdrasil-go/src/defaults"
+	"github.com/olekukonko/tablewriter"
+	"github.com/yggdrasil-network/yggdrasil-go/src/admin"
+	"github.com/yggdrasil-network/yggdrasil-go/src/core"
+	"github.com/yggdrasil-network/yggdrasil-go/src/multicast"
+	"github.com/yggdrasil-network/yggdrasil-go/src/tun"
+	"github.com/yggdrasil-network/yggdrasil-go/src/version"
 )
 
-type admin_info map[string]interface{}
-
 func main() {
+	// read config, speak DNS/TCP and/or over a UNIX socket
+	if err := protect.Pledge("stdio rpath inet unix dns"); err != nil {
+		panic(err)
+	}
+
+	// makes sure we can use defer and still return an error code to the OS
+	os.Exit(run())
+}
+
+func run() int {
 	logbuffer := &bytes.Buffer{}
 	logger := log.New(logbuffer, "", log.Flags())
-	defer func() {
+
+	defer func() int {
 		if r := recover(); r != nil {
 			logger.Println("Fatal error:", r)
 			fmt.Print(logbuffer)
-			os.Exit(1)
+			return 1
 		}
+		return 0
 	}()
 
-	endpoint := defaults.GetDefaults().DefaultAdminListen
+	cmdLineEnv := newCmdLineEnv()
+	cmdLineEnv.parseFlagsAndArgs()
 
-	flag.Usage = func() {
-		fmt.Fprintf(flag.CommandLine.Output(), "Usage: %s [options] command [key=value] [key=value] ...\n\n", os.Args[0])
-		fmt.Println("Options:")
-		flag.PrintDefaults()
-		fmt.Println("\nPlease note that options must always specified BEFORE the command\non the command line or they will be ignored.\n")
-		fmt.Println("Commands:\n  - Use \"list\" for a list of available commands\n")
-		fmt.Println("Examples:")
-		fmt.Println("  - ", os.Args[0], "list")
-		fmt.Println("  - ", os.Args[0], "getPeers")
-		fmt.Println("  - ", os.Args[0], "-v getSelf")
-		fmt.Println("  - ", os.Args[0], "setTunTap name=auto mtu=1500 tap_mode=false")
-		fmt.Println("  - ", os.Args[0], "-endpoint=tcp://localhost:9001 getDHT")
-		fmt.Println("  - ", os.Args[0], "-endpoint=unix:///var/run/ygg.sock getDHT")
+	if cmdLineEnv.ver {
+		fmt.Println("Build name:", version.BuildName())
+		fmt.Println("Build version:", version.BuildVersion())
+		fmt.Println("To get the version number of the running Yggdrasil node, run", os.Args[0], "getSelf")
+		return 0
 	}
-	server := flag.String("endpoint", endpoint, "Admin socket endpoint")
-	injson := flag.Bool("json", false, "Output in JSON format (as opposed to pretty-print)")
-	verbose := flag.Bool("v", false, "Verbose output (includes public keys)")
-	flag.Parse()
-	args := flag.Args()
 
-	if len(args) == 0 {
+	if len(cmdLineEnv.args) == 0 {
 		flag.Usage()
-		return
+		return 0
 	}
 
-	if *server == endpoint {
-		if config, err := ioutil.ReadFile(defaults.GetDefaults().DefaultConfigFile); err == nil {
-			if bytes.Compare(config[0:2], []byte{0xFF, 0xFE}) == 0 ||
-				bytes.Compare(config[0:2], []byte{0xFE, 0xFF}) == 0 {
-				utf := unicode.UTF16(unicode.BigEndian, unicode.UseBOM)
-				decoder := utf.NewDecoder()
-				config, err = decoder.Bytes(config)
-				if err != nil {
-					panic(err)
-				}
-			}
-			var dat map[string]interface{}
-			if err := hjson.Unmarshal(config, &dat); err != nil {
-				panic(err)
-			}
-			if ep, ok := dat["AdminListen"].(string); ok && (ep != "none" && ep != "") {
-				endpoint = ep
-				logger.Println("Found platform default config file", defaults.GetDefaults().DefaultConfigFile)
-				logger.Println("Using endpoint", endpoint, "from AdminListen")
-			} else {
-				logger.Println("Configuration file doesn't contain appropriate AdminListen option")
-				logger.Println("Falling back to platform default", defaults.GetDefaults().DefaultAdminListen)
-			}
-		} else {
-			logger.Println("Can't open config file from default location", defaults.GetDefaults().DefaultConfigFile)
-			logger.Println("Falling back to platform default", defaults.GetDefaults().DefaultAdminListen)
-		}
-	} else {
-		endpoint = *server
-		logger.Println("Using endpoint", endpoint, "from command line")
-	}
+	cmdLineEnv.setEndpoint(logger)
 
 	var conn net.Conn
-	u, err := url.Parse(endpoint)
+	u, err := url.Parse(cmdLineEnv.endpoint)
 	if err == nil {
 		switch strings.ToLower(u.Scheme) {
 		case "unix":
-			logger.Println("Connecting to UNIX socket", endpoint[7:])
-			conn, err = net.Dial("unix", endpoint[7:])
+			logger.Println("Connecting to UNIX socket", cmdLineEnv.endpoint[7:])
+			conn, err = net.Dial("unix", cmdLineEnv.endpoint[7:])
 		case "tcp":
 			logger.Println("Connecting to TCP socket", u.Host)
 			conn, err = net.Dial("tcp", u.Host)
@@ -109,320 +79,255 @@ func main() {
 		}
 	} else {
 		logger.Println("Connecting to TCP socket", u.Host)
-		conn, err = net.Dial("tcp", endpoint)
+		conn, err = net.Dial("tcp", cmdLineEnv.endpoint)
 	}
 	if err != nil {
 		panic(err)
 	}
+
+	// config and socket are done, work without unprivileges
+	if err := protect.Pledge("stdio"); err != nil {
+		panic(err)
+	}
+
 	logger.Println("Connected")
 	defer conn.Close()
 
 	decoder := json.NewDecoder(conn)
 	encoder := json.NewEncoder(conn)
-	send := make(admin_info)
-	recv := make(admin_info)
-
-	for c, a := range args {
+	send := &admin.AdminSocketRequest{}
+	recv := &admin.AdminSocketResponse{}
+	args := map[string]string{}
+	for c, a := range cmdLineEnv.args {
 		if c == 0 {
 			if strings.HasPrefix(a, "-") {
 				logger.Printf("Ignoring flag %s as it should be specified before other parameters\n", a)
 				continue
 			}
 			logger.Printf("Sending request: %v\n", a)
-			send["request"] = a
+			send.Name = a
 			continue
 		}
-		tokens := strings.Split(a, "=")
-		if len(tokens) == 1 {
-			send[tokens[0]] = true
-		} else if len(tokens) > 2 {
-			send[tokens[0]] = strings.Join(tokens[1:], "=")
-		} else if len(tokens) == 2 {
-			if i, err := strconv.Atoi(tokens[1]); err == nil {
-				logger.Printf("Sending parameter %s: %d\n", tokens[0], i)
-				send[tokens[0]] = i
-			} else {
-				switch strings.ToLower(tokens[1]) {
-				case "true":
-					send[tokens[0]] = true
-				case "false":
-					send[tokens[0]] = false
-				default:
-					send[tokens[0]] = tokens[1]
-				}
-				logger.Printf("Sending parameter %s: %v\n", tokens[0], send[tokens[0]])
-			}
+		tokens := strings.SplitN(a, "=", 2)
+		switch {
+		case len(tokens) == 1:
+			logger.Println("Ignoring invalid argument:", a)
+		default:
+			args[tokens[0]] = tokens[1]
 		}
 	}
-
+	if send.Arguments, err = json.Marshal(args); err != nil {
+		panic(err)
+	}
 	if err := encoder.Encode(&send); err != nil {
 		panic(err)
 	}
 	logger.Printf("Request sent")
-	if err := decoder.Decode(&recv); err == nil {
-		logger.Printf("Response received")
-		if recv["status"] == "error" {
-			if err, ok := recv["error"]; ok {
-				fmt.Println("Admin socket returned an error:", err)
-			} else {
-				fmt.Println("Admin socket returned an error but didn't specify any error text")
-			}
-			os.Exit(1)
+	if err := decoder.Decode(&recv); err != nil {
+		panic(err)
+	}
+	if recv.Status == "error" {
+		if err := recv.Error; err != "" {
+			fmt.Println("Admin socket returned an error:", err)
+		} else {
+			fmt.Println("Admin socket returned an error but didn't specify any error text")
 		}
-		if _, ok := recv["request"]; !ok {
-			fmt.Println("Missing request in response (malformed response?)")
-			os.Exit(1)
+		return 1
+	}
+	if cmdLineEnv.injson {
+		if json, err := json.MarshalIndent(recv.Response, "", "  "); err == nil {
+			fmt.Println(string(json))
 		}
-		if _, ok := recv["response"]; !ok {
-			fmt.Println("Missing response body (malformed response?)")
-			os.Exit(1)
-		}
-		req := recv["request"].(map[string]interface{})
-		res := recv["response"].(map[string]interface{})
-
-		if *injson {
-			if json, err := json.MarshalIndent(res, "", "  "); err == nil {
-				fmt.Println(string(json))
-			}
-			os.Exit(0)
-		}
-
-		switch strings.ToLower(req["request"].(string)) {
-		case "dot":
-			fmt.Println(res["dot"])
-		case "list", "getpeers", "getswitchpeers", "getdht", "getsessions", "dhtping":
-			maxWidths := make(map[string]int)
-			var keyOrder []string
-			keysOrdered := false
-
-			for _, tlv := range res {
-				for slk, slv := range tlv.(map[string]interface{}) {
-					if !keysOrdered {
-						for k := range slv.(map[string]interface{}) {
-							if !*verbose {
-								if k == "box_pub_key" || k == "box_sig_key" || k == "nodeinfo" {
-									continue
-								}
-							}
-							keyOrder = append(keyOrder, fmt.Sprint(k))
-						}
-						sort.Strings(keyOrder)
-						keysOrdered = true
-					}
-					for k, v := range slv.(map[string]interface{}) {
-						if len(fmt.Sprint(slk)) > maxWidths["key"] {
-							maxWidths["key"] = len(fmt.Sprint(slk))
-						}
-						if len(fmt.Sprint(v)) > maxWidths[k] {
-							maxWidths[k] = len(fmt.Sprint(v))
-							if maxWidths[k] < len(k) {
-								maxWidths[k] = len(k)
-							}
-						}
-					}
-				}
-
-				if len(keyOrder) > 0 {
-					fmt.Printf("%-"+fmt.Sprint(maxWidths["key"])+"s  ", "")
-					for _, v := range keyOrder {
-						fmt.Printf("%-"+fmt.Sprint(maxWidths[v])+"s  ", v)
-					}
-					fmt.Println()
-				}
-
-				for slk, slv := range tlv.(map[string]interface{}) {
-					fmt.Printf("%-"+fmt.Sprint(maxWidths["key"])+"s  ", slk)
-					for _, k := range keyOrder {
-						preformatted := slv.(map[string]interface{})[k]
-						var formatted string
-						switch k {
-						case "bytes_sent", "bytes_recvd":
-							formatted = fmt.Sprintf("%d", uint(preformatted.(float64)))
-						case "uptime", "last_seen":
-							seconds := uint(preformatted.(float64)) % 60
-							minutes := uint(preformatted.(float64)/60) % 60
-							hours := uint(preformatted.(float64) / 60 / 60)
-							formatted = fmt.Sprintf("%02d:%02d:%02d", hours, minutes, seconds)
-						default:
-							formatted = fmt.Sprint(preformatted)
-						}
-						fmt.Printf("%-"+fmt.Sprint(maxWidths[k])+"s  ", formatted)
-					}
-					fmt.Println()
-				}
-			}
-		case "gettuntap", "settuntap":
-			for k, v := range res {
-				fmt.Println("Interface name:", k)
-				if mtu, ok := v.(map[string]interface{})["mtu"].(float64); ok {
-					fmt.Println("Interface MTU:", mtu)
-				}
-				if tap_mode, ok := v.(map[string]interface{})["tap_mode"].(bool); ok {
-					fmt.Println("TAP mode:", tap_mode)
-				}
-			}
-		case "getself":
-			for k, v := range res["self"].(map[string]interface{}) {
-				if buildname, ok := v.(map[string]interface{})["build_name"].(string); ok && buildname != "unknown" {
-					fmt.Println("Build name:", buildname)
-				}
-				if buildversion, ok := v.(map[string]interface{})["build_version"].(string); ok && buildversion != "unknown" {
-					fmt.Println("Build version:", buildversion)
-				}
-				fmt.Println("IPv6 address:", k)
-				if subnet, ok := v.(map[string]interface{})["subnet"].(string); ok {
-					fmt.Println("IPv6 subnet:", subnet)
-				}
-				if coords, ok := v.(map[string]interface{})["coords"].(string); ok {
-					fmt.Println("Coords:", coords)
-				}
-				if *verbose {
-					if boxPubKey, ok := v.(map[string]interface{})["box_pub_key"].(string); ok {
-						fmt.Println("Public encryption key:", boxPubKey)
-					}
-					if boxSigKey, ok := v.(map[string]interface{})["box_sig_key"].(string); ok {
-						fmt.Println("Public signing key:", boxSigKey)
-					}
-				}
-			}
-		case "getswitchqueues":
-			maximumqueuesize := float64(4194304)
-			portqueues := make(map[float64]float64)
-			portqueuesize := make(map[float64]float64)
-			portqueuepackets := make(map[float64]float64)
-			v := res["switchqueues"].(map[string]interface{})
-			if queuecount, ok := v["queues_count"].(float64); ok {
-				fmt.Printf("Active queue count: %d queues\n", uint(queuecount))
-			}
-			if queuesize, ok := v["queues_size"].(float64); ok {
-				fmt.Printf("Active queue size: %d bytes\n", uint(queuesize))
-			}
-			if highestqueuecount, ok := v["highest_queues_count"].(float64); ok {
-				fmt.Printf("Highest queue count: %d queues\n", uint(highestqueuecount))
-			}
-			if highestqueuesize, ok := v["highest_queues_size"].(float64); ok {
-				fmt.Printf("Highest queue size: %d bytes\n", uint(highestqueuesize))
-			}
-			if m, ok := v["maximum_queues_size"].(float64); ok {
-				maximumqueuesize = m
-				fmt.Printf("Maximum queue size: %d bytes\n", uint(maximumqueuesize))
-			}
-			if queues, ok := v["queues"].([]interface{}); ok {
-				if len(queues) != 0 {
-					fmt.Println("Active queues:")
-					for _, v := range queues {
-						queueport := v.(map[string]interface{})["queue_port"].(float64)
-						queuesize := v.(map[string]interface{})["queue_size"].(float64)
-						queuepackets := v.(map[string]interface{})["queue_packets"].(float64)
-						queueid := v.(map[string]interface{})["queue_id"].(string)
-						portqueues[queueport]++
-						portqueuesize[queueport] += queuesize
-						portqueuepackets[queueport] += queuepackets
-						queuesizepercent := (100 / maximumqueuesize) * queuesize
-						fmt.Printf("- Switch port %d, Stream ID: %v, size: %d bytes (%d%% full), %d packets\n",
-							uint(queueport), []byte(queueid), uint(queuesize),
-							uint(queuesizepercent), uint(queuepackets))
-					}
-				}
-			}
-			if len(portqueuesize) > 0 && len(portqueuepackets) > 0 {
-				fmt.Println("Aggregated statistics by switchport:")
-				for k, v := range portqueuesize {
-					queuesizepercent := (100 / (portqueues[k] * maximumqueuesize)) * v
-					fmt.Printf("- Switch port %d, size: %d bytes (%d%% full), %d packets\n",
-						uint(k), uint(v), uint(queuesizepercent), uint(portqueuepackets[k]))
-				}
-			}
-		case "addpeer", "removepeer", "addallowedencryptionpublickey", "removeallowedencryptionpublickey", "addsourcesubnet", "addroute", "removesourcesubnet", "removeroute":
-			if _, ok := res["added"]; ok {
-				for _, v := range res["added"].([]interface{}) {
-					fmt.Println("Added:", fmt.Sprint(v))
-				}
-			}
-			if _, ok := res["not_added"]; ok {
-				for _, v := range res["not_added"].([]interface{}) {
-					fmt.Println("Not added:", fmt.Sprint(v))
-				}
-			}
-			if _, ok := res["removed"]; ok {
-				for _, v := range res["removed"].([]interface{}) {
-					fmt.Println("Removed:", fmt.Sprint(v))
-				}
-			}
-			if _, ok := res["not_removed"]; ok {
-				for _, v := range res["not_removed"].([]interface{}) {
-					fmt.Println("Not removed:", fmt.Sprint(v))
-				}
-			}
-		case "getallowedencryptionpublickeys":
-			if _, ok := res["allowed_box_pubs"]; !ok {
-				fmt.Println("All connections are allowed")
-			} else if res["allowed_box_pubs"] == nil {
-				fmt.Println("All connections are allowed")
-			} else {
-				fmt.Println("Connections are allowed only from the following public box keys:")
-				for _, v := range res["allowed_box_pubs"].([]interface{}) {
-					fmt.Println("-", v)
-				}
-			}
-		case "getmulticastinterfaces":
-			if _, ok := res["multicast_interfaces"]; !ok {
-				fmt.Println("No multicast interfaces found")
-			} else if res["multicast_interfaces"] == nil {
-				fmt.Println("No multicast interfaces found")
-			} else {
-				fmt.Println("Multicast peer discovery is active on:")
-				for _, v := range res["multicast_interfaces"].([]interface{}) {
-					fmt.Println("-", v)
-				}
-			}
-		case "getsourcesubnets":
-			if _, ok := res["source_subnets"]; !ok {
-				fmt.Println("No source subnets found")
-			} else if res["source_subnets"] == nil {
-				fmt.Println("No source subnets found")
-			} else {
-				fmt.Println("Source subnets:")
-				for _, v := range res["source_subnets"].([]interface{}) {
-					fmt.Println("-", v)
-				}
-			}
-		case "getroutes":
-			if routes, ok := res["routes"].(map[string]interface{}); !ok {
-				fmt.Println("No routes found")
-			} else {
-				if res["routes"] == nil || len(routes) == 0 {
-					fmt.Println("No routes found")
-				} else {
-					fmt.Println("Routes:")
-					for k, v := range routes {
-						if pv, ok := v.(string); ok {
-							fmt.Println("-", k, " via ", pv)
-						}
-					}
-				}
-			}
-		case "settunnelrouting":
-			fallthrough
-		case "gettunnelrouting":
-			if enabled, ok := res["enabled"].(bool); !ok {
-				fmt.Println("Tunnel routing is disabled")
-			} else if !enabled {
-				fmt.Println("Tunnel routing is disabled")
-			} else {
-				fmt.Println("Tunnel routing is enabled")
-			}
-		default:
-			if json, err := json.MarshalIndent(recv["response"], "", "  "); err == nil {
-				fmt.Println(string(json))
-			}
-		}
-	} else {
-		logger.Println("Error receiving response:", err)
+		return 0
 	}
 
-	if v, ok := recv["status"]; ok && v != "success" {
-		os.Exit(1)
+	table := tablewriter.NewWriter(os.Stdout)
+	table.SetAlignment(tablewriter.ALIGN_LEFT)
+	table.SetAutoFormatHeaders(false)
+	table.SetCenterSeparator("")
+	table.SetColumnSeparator("")
+	table.SetRowSeparator("")
+	table.SetHeaderLine(false)
+	table.SetBorder(false)
+	table.SetTablePadding("\t") // pad with tabs
+	table.SetNoWhiteSpace(true)
+	table.SetAutoWrapText(false)
+
+	switch strings.ToLower(send.Name) {
+	case "list":
+		var resp admin.ListResponse
+		if err := json.Unmarshal(recv.Response, &resp); err != nil {
+			panic(err)
+		}
+		table.SetHeader([]string{"Command", "Arguments", "Description"})
+		for _, entry := range resp.List {
+			for i := range entry.Fields {
+				entry.Fields[i] = entry.Fields[i] + "=..."
+			}
+			table.Append([]string{entry.Command, strings.Join(entry.Fields, ", "), entry.Description})
+		}
+		table.Render()
+
+	case "getself":
+		var resp admin.GetSelfResponse
+		if err := json.Unmarshal(recv.Response, &resp); err != nil {
+			panic(err)
+		}
+		table.Append([]string{"Build name:", resp.BuildName})
+		table.Append([]string{"Build version:", resp.BuildVersion})
+		table.Append([]string{"IPv6 address:", resp.IPAddress})
+		table.Append([]string{"IPv6 subnet:", resp.Subnet})
+		table.Append([]string{"Routing table size:", fmt.Sprintf("%d", resp.RoutingEntries)})
+		table.Append([]string{"Public key:", resp.PublicKey})
+		table.Render()
+
+	case "getpeers":
+		var resp admin.GetPeersResponse
+		if err := json.Unmarshal(recv.Response, &resp); err != nil {
+			panic(err)
+		}
+		table.SetHeader([]string{"URI", "State", "Dir", "IP Address", "Uptime", "RTT", "RX", "TX", "Down", "Up", "Pr", "Cost", "Last Error"})
+		for _, peer := range resp.Peers {
+			state, lasterr, dir, rtt, rxr, txr := "Up", "-", "Out", "-", "-", "-"
+			if !peer.Up {
+				state, lasterr = "Down", fmt.Sprintf("%s ago: %s", peer.LastErrorTime.Round(time.Second), peer.LastError)
+			} else if rttms := float64(peer.Latency.Microseconds()) / 1000; rttms > 0 {
+				rtt = fmt.Sprintf("%.02fms", rttms)
+			}
+			if peer.Inbound {
+				dir = "In"
+			}
+			uristring := peer.URI
+			if uri, err := url.Parse(peer.URI); err == nil {
+				uri.RawQuery = ""
+				uristring = uri.String()
+			}
+			if peer.RXRate > 0 {
+				rxr = peer.RXRate.String() + "/s"
+			}
+			if peer.TXRate > 0 {
+				txr = peer.TXRate.String() + "/s"
+			}
+			table.Append([]string{
+				uristring,
+				state,
+				dir,
+				peer.IPAddress,
+				(time.Duration(peer.Uptime) * time.Second).String(),
+				rtt,
+				peer.RXBytes.String(),
+				peer.TXBytes.String(),
+				rxr,
+				txr,
+				fmt.Sprintf("%d", peer.Priority),
+				fmt.Sprintf("%d", peer.Cost),
+				lasterr,
+			})
+		}
+		table.Render()
+
+	case "gettree":
+		var resp admin.GetTreeResponse
+		if err := json.Unmarshal(recv.Response, &resp); err != nil {
+			panic(err)
+		}
+		//table.SetHeader([]string{"Public Key", "IP Address", "Port", "Rest"})
+		table.SetHeader([]string{"Public Key", "IP Address", "Parent", "Sequence"})
+		for _, tree := range resp.Tree {
+			table.Append([]string{
+				tree.PublicKey,
+				tree.IPAddress,
+				tree.Parent,
+				fmt.Sprintf("%d", tree.Sequence),
+				//fmt.Sprintf("%d", dht.Port),
+				//fmt.Sprintf("%d", dht.Rest),
+			})
+		}
+		table.Render()
+
+	case "getpaths":
+		var resp admin.GetPathsResponse
+		if err := json.Unmarshal(recv.Response, &resp); err != nil {
+			panic(err)
+		}
+		table.SetHeader([]string{"Public Key", "IP Address", "Path", "Seq"})
+		for _, p := range resp.Paths {
+			table.Append([]string{
+				p.PublicKey,
+				p.IPAddress,
+				fmt.Sprintf("%v", p.Path),
+				fmt.Sprintf("%d", p.Sequence),
+			})
+		}
+		table.Render()
+
+	case "getsessions":
+		var resp admin.GetSessionsResponse
+		if err := json.Unmarshal(recv.Response, &resp); err != nil {
+			panic(err)
+		}
+		table.SetHeader([]string{"Public Key", "IP Address", "Uptime", "RX", "TX"})
+		for _, p := range resp.Sessions {
+			table.Append([]string{
+				p.PublicKey,
+				p.IPAddress,
+				(time.Duration(p.Uptime) * time.Second).String(),
+				p.RXBytes.String(),
+				p.TXBytes.String(),
+			})
+		}
+		table.Render()
+
+	case "getnodeinfo":
+		var resp core.GetNodeInfoResponse
+		if err := json.Unmarshal(recv.Response, &resp); err != nil {
+			panic(err)
+		}
+		for _, v := range resp {
+			fmt.Println(string(v))
+			break
+		}
+
+	case "getmulticastinterfaces":
+		var resp multicast.GetMulticastInterfacesResponse
+		if err := json.Unmarshal(recv.Response, &resp); err != nil {
+			panic(err)
+		}
+		fmtBool := func(b bool) string {
+			if b {
+				return "Yes"
+			}
+			return "-"
+		}
+		table.SetHeader([]string{"Name", "Listen Address", "Beacon", "Listen", "Password"})
+		for _, p := range resp.Interfaces {
+			table.Append([]string{
+				p.Name,
+				p.Address,
+				fmtBool(p.Beacon),
+				fmtBool(p.Listen),
+				fmtBool(p.Password),
+			})
+		}
+		table.Render()
+
+	case "gettun":
+		var resp tun.GetTUNResponse
+		if err := json.Unmarshal(recv.Response, &resp); err != nil {
+			panic(err)
+		}
+		table.Append([]string{"TUN enabled:", fmt.Sprintf("%#v", resp.Enabled)})
+		if resp.Enabled {
+			table.Append([]string{"Interface name:", resp.Name})
+			table.Append([]string{"Interface MTU:", fmt.Sprintf("%d", resp.MTU)})
+		}
+		table.Render()
+
+	case "addpeer", "removepeer":
+
+	default:
+		fmt.Println(string(recv.Response))
 	}
-	os.Exit(0)
+
+	return 0
 }

contrib/ansible/genkeys.go

@@ -1,19 +1,18 @@
 /*
-
 This file generates crypto keys for [ansible-yggdrasil](https://github.com/jcgruenhage/ansible-yggdrasil/)
-
 */
 package main
 
 import (
+	"crypto/ed25519"
 	"encoding/hex"
 	"flag"
 	"fmt"
 	"net"
 	"os"
 
+	"github.com/cheggaaa/pb/v3"
 	"github.com/yggdrasil-network/yggdrasil-go/src/address"
-	"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
 )
 
 var numHosts = flag.Int("hosts", 1, "number of host vars to generate")
@@ -22,36 +21,29 @@ var keyTries = flag.Int("tries", 1000, "number of tries before taking the best k
 type keySet struct {
 	priv []byte
 	pub  []byte
-	id   []byte
 	ip   string
 }
 
 func main() {
 	flag.Parse()
 
+	bar := pb.StartNew(*keyTries*2 + *numHosts)
+
 	if *numHosts > *keyTries {
 		println("Can't generate less keys than hosts.")
 		return
 	}
 
-	var encryptionKeys []keySet
+	var keys []keySet
 	for i := 0; i < *numHosts+1; i++ {
-		encryptionKeys = append(encryptionKeys, newBoxKey())
+		keys = append(keys, newKey())
+		bar.Increment()
 	}
-	encryptionKeys = sortKeySetArray(encryptionKeys)
+	keys = sortKeySetArray(keys)
 	for i := 0; i < *keyTries-*numHosts-1; i++ {
-		encryptionKeys[0] = newBoxKey()
-		encryptionKeys = bubbleUpTo(encryptionKeys, 0)
-	}
-
-	var signatureKeys []keySet
-	for i := 0; i < *numHosts+1; i++ {
-		signatureKeys = append(signatureKeys, newSigKey())
-	}
-	signatureKeys = sortKeySetArray(signatureKeys)
-	for i := 0; i < *keyTries-*numHosts-1; i++ {
-		signatureKeys[0] = newSigKey()
-		signatureKeys = bubbleUpTo(signatureKeys, 0)
+		keys[0] = newKey()
+		keys = bubbleUpTo(keys, 0)
+		bar.Increment()
 	}
 
 	os.MkdirAll("host_vars", 0755)
@@ -63,41 +55,36 @@ func main() {
 			return
 		}
 		defer file.Close()
-		file.WriteString(fmt.Sprintf("yggdrasil_encryption_public_key: %v\n", hex.EncodeToString(encryptionKeys[i].pub)))
-		file.WriteString("yggdrasil_encryption_private_key: \"{{ vault_yggdrasil_encryption_private_key }}\"\n")
-		file.WriteString(fmt.Sprintf("yggdrasil_signing_public_key: %v\n", hex.EncodeToString(signatureKeys[i].pub)))
-		file.WriteString("yggdrasil_signing_private_key: \"{{ vault_yggdrasil_signing_private_key }}\"\n")
-		file.WriteString(fmt.Sprintf("ansible_host: %v\n", encryptionKeys[i].ip))
+		file.WriteString(fmt.Sprintf("yggdrasil_public_key: %v\n", hex.EncodeToString(keys[i].pub)))
+		file.WriteString("yggdrasil_private_key: \"{{ vault_yggdrasil_private_key }}\"\n")
+		file.WriteString(fmt.Sprintf("ansible_host: %v\n", keys[i].ip))
 
 		file, err = os.Create(fmt.Sprintf("host_vars/%x/vault", i))
 		if err != nil {
 			return
 		}
 		defer file.Close()
-		file.WriteString(fmt.Sprintf("vault_yggdrasil_encryption_private_key: %v\n", hex.EncodeToString(encryptionKeys[i].priv)))
-		file.WriteString(fmt.Sprintf("vault_yggdrasil_signing_private_key: %v\n", hex.EncodeToString(signatureKeys[i].priv)))
+		file.WriteString(fmt.Sprintf("vault_yggdrasil_private_key: %v\n", hex.EncodeToString(keys[i].priv)))
+		bar.Increment()
 	}
+	bar.Finish()
 }
 
-func newBoxKey() keySet {
-	pub, priv := crypto.NewBoxKeys()
-	id := crypto.GetNodeID(pub)
-	ip := net.IP(address.AddrForNodeID(id)[:]).String()
-	return keySet{priv[:], pub[:], id[:], ip}
-}
-
-func newSigKey() keySet {
-	pub, priv := crypto.NewSigKeys()
-	id := crypto.GetTreeID(pub)
-	return keySet{priv[:], pub[:], id[:], ""}
+func newKey() keySet {
+	pub, priv, err := ed25519.GenerateKey(nil)
+	if err != nil {
+		panic(err)
+	}
+	ip := net.IP(address.AddrForKey(pub)[:]).String()
+	return keySet{priv[:], pub[:], ip}
 }
 
 func isBetter(oldID, newID []byte) bool {
 	for idx := range oldID {
-		if newID[idx] > oldID[idx] {
+		if newID[idx] < oldID[idx] {
 			return true
 		}
-		if newID[idx] < oldID[idx] {
+		if newID[idx] > oldID[idx] {
 			return false
 		}
 	}
@@ -113,7 +100,7 @@ func sortKeySetArray(sets []keySet) []keySet {
 
 func bubbleUpTo(sets []keySet, num int) []keySet {
 	for i := 0; i < len(sets)-num-1; i++ {
-		if isBetter(sets[i+1].id, sets[i].id) {
+		if isBetter(sets[i+1].pub, sets[i].pub) {
 			var tmp = sets[i]
 			sets[i] = sets[i+1]
 			sets[i+1] = tmp

contrib/apparmor/usr.bin.yggdrasil

@@ -1,23 +1,17 @@
-# Last Modified: Sat Mar  9 06:08:02 2019
+# Last Modified: Fri Oct 30 11:33:31 2020
 #include <tunables/global>
 
 /usr/bin/yggdrasil {
   #include <abstractions/base>
+  #include <abstractions/nameservice>
 
   capability net_admin,
+  capability net_raw,
 
-  network inet stream,
-  network inet dgram,
-  network inet6 dgram,
-  network inet6 stream,
-  network netlink raw,
-
-  /lib/@{multiarch}/ld-*.so mr,
-  /proc/sys/net/core/somaxconn r,
   /dev/net/tun rw,
+  /proc/sys/net/core/somaxconn r,
+  /sys/kernel/mm/transparent_hugepage/hpage_pmd_size r,
 
-  /usr/bin/yggdrasil mr,
   /etc/yggdrasil.conf rw,
   /run/yggdrasil.sock rw,
-
 }

contrib/apparmor/usr.bin.yggdrasilctl

@@ -0,0 +1,11 @@
+# Last Modified: Mon Feb  3 22:19:45 2025
+include <tunables/global>
+
+/usr/bin/yggdrasilctl {
+  include <abstractions/base>
+
+  /etc/yggdrasil.conf rw,
+  /run/yggdrasil.sock rw,
+  owner /sys/kernel/mm/transparent_hugepage/hpage_pmd_size r,
+
+}

contrib/config/yggdrasilconf.go

@@ -1,97 +0,0 @@
-package main
-
-/*
-This is a small utility that is designed to accompany the vyatta-yggdrasil
-package. It takes a HJSON configuration file, makes changes to it based on
-the command line arguments, and then spits out an updated file.
-*/
-
-import (
-	"bytes"
-	"encoding/json"
-	"flag"
-	"fmt"
-	"io/ioutil"
-	"strconv"
-
-	"github.com/hjson/hjson-go"
-	"golang.org/x/text/encoding/unicode"
-
-	"github.com/yggdrasil-network/yggdrasil-go/src/config"
-)
-
-type nodeConfig = config.NodeConfig
-
-func main() {
-	useconffile := flag.String("useconffile", "/etc/yggdrasil.conf", "update config at specified file path")
-	flag.Parse()
-	cfg := nodeConfig{}
-	var config []byte
-	var err error
-	config, err = ioutil.ReadFile(*useconffile)
-	if err != nil {
-		panic(err)
-	}
-	if bytes.Compare(config[0:2], []byte{0xFF, 0xFE}) == 0 ||
-		bytes.Compare(config[0:2], []byte{0xFE, 0xFF}) == 0 {
-		utf := unicode.UTF16(unicode.BigEndian, unicode.UseBOM)
-		decoder := utf.NewDecoder()
-		config, err = decoder.Bytes(config)
-		if err != nil {
-			panic(err)
-		}
-	}
-	var dat map[string]interface{}
-	if err := hjson.Unmarshal(config, &dat); err != nil {
-		panic(err)
-	}
-	confJson, err := json.Marshal(dat)
-	if err != nil {
-		panic(err)
-	}
-	json.Unmarshal(confJson, &cfg)
-	switch flag.Arg(0) {
-	case "setMTU":
-		cfg.IfMTU, err = strconv.Atoi(flag.Arg(1))
-		if err != nil {
-			cfg.IfMTU = 1280
-		}
-		if mtu, _ := strconv.Atoi(flag.Arg(1)); mtu < 1280 {
-			cfg.IfMTU = 1280
-		}
-	case "setIfName":
-		cfg.IfName = flag.Arg(1)
-	case "setListen":
-		cfg.Listen = flag.Arg(1)
-	case "setAdminListen":
-		cfg.AdminListen = flag.Arg(1)
-	case "setIfTapMode":
-		if flag.Arg(1) == "true" {
-			cfg.IfTAPMode = true
-		} else {
-			cfg.IfTAPMode = false
-		}
-	case "addPeer":
-		found := false
-		for _, v := range cfg.Peers {
-			if v == flag.Arg(1) {
-				found = true
-			}
-		}
-		if !found {
-			cfg.Peers = append(cfg.Peers, flag.Arg(1))
-		}
-	case "removePeer":
-		for k, v := range cfg.Peers {
-			if v == flag.Arg(1) {
-				cfg.Peers = append(cfg.Peers[:k], cfg.Peers[k+1:]...)
-			}
-		}
-	}
-	bs, err := hjson.Marshal(cfg)
-	if err != nil {
-		panic(err)
-	}
-	fmt.Println(string(bs))
-	return
-}

contrib/deb/generate.sh

@@ -21,14 +21,18 @@ if [ $PKGBRANCH = "master" ]; then
   PKGREPLACES=yggdrasil-develop
 fi
 
-if [ $PKGARCH = "amd64" ]; then GOARCH=amd64 GOOS=linux ./build
-elif [ $PKGARCH = "i386" ]; then GOARCH=386 GOOS=linux ./build
-elif [ $PKGARCH = "mipsel" ]; then GOARCH=mipsle GOOS=linux ./build
-elif [ $PKGARCH = "mips" ]; then GOARCH=mips64 GOOS=linux ./build
-elif [ $PKGARCH = "armhf" ]; then GOARCH=arm GOOS=linux GOARM=6 ./build
-elif [ $PKGARCH = "arm64" ]; then GOARCH=arm64 GOOS=linux ./build
+GOLDFLAGS="-X github.com/yggdrasil-network/yggdrasil-go/src/config.defaultConfig=/etc/yggdrasil/yggdrasil.conf"
+GOLDFLAGS="${GOLDFLAGS} -X github.com/yggdrasil-network/yggdrasil-go/src/config.defaultAdminListen=unix:///var/run/yggdrasil/yggdrasil.sock"
+
+if [ $PKGARCH = "amd64" ]; then GOARCH=amd64 GOOS=linux ./build -l "${GOLDFLAGS}"
+elif [ $PKGARCH = "i386" ]; then GOARCH=386 GOOS=linux ./build -l "${GOLDFLAGS}"
+elif [ $PKGARCH = "mipsel" ]; then GOARCH=mipsle GOOS=linux ./build -l "${GOLDFLAGS}"
+elif [ $PKGARCH = "mips" ]; then GOARCH=mips64 GOOS=linux ./build -l "${GOLDFLAGS}"
+elif [ $PKGARCH = "armhf" ]; then GOARCH=arm GOOS=linux GOARM=6 ./build -l "${GOLDFLAGS}"
+elif [ $PKGARCH = "arm64" ]; then GOARCH=arm64 GOOS=linux ./build -l "${GOLDFLAGS}"
+elif [ $PKGARCH = "armel" ]; then GOARCH=arm GOOS=linux GOARM=5 ./build -l "${GOLDFLAGS}"
 else
-  echo "Specify PKGARCH=amd64,i386,mips,mipsel,armhf,arm64"
+  echo "Specify PKGARCH=amd64,i386,mips,mipsel,armhf,arm64,armel"
   exit 1
 fi
 
@@ -37,7 +41,7 @@ echo "Building $PKGFILE"
 mkdir -p /tmp/$PKGNAME/
 mkdir -p /tmp/$PKGNAME/debian/
 mkdir -p /tmp/$PKGNAME/usr/bin/
-mkdir -p /tmp/$PKGNAME/etc/systemd/system/
+mkdir -p /tmp/$PKGNAME/lib/systemd/system/
 
 cat > /tmp/$PKGNAME/debian/changelog << EOF
 Please see https://github.com/yggdrasil-network/yggdrasil-go/
@@ -46,11 +50,12 @@ echo 9 > /tmp/$PKGNAME/debian/compat
 cat > /tmp/$PKGNAME/debian/control << EOF
 Package: $PKGNAME
 Version: $PKGVERSION
-Section: contrib/net
-Priority: extra
+Section: golang
+Priority: optional
 Architecture: $PKGARCH
 Replaces: $PKGREPLACES
 Conflicts: $PKGREPLACES
+Depends: systemd
 Maintainer: Neil Alexander <neilalexander@users.noreply.github.com>
 Description: Yggdrasil Network
  Yggdrasil is an early-stage implementation of a fully end-to-end encrypted IPv6
@@ -67,35 +72,52 @@ EOF
 cat > /tmp/$PKGNAME/debian/install << EOF
 usr/bin/yggdrasil usr/bin
 usr/bin/yggdrasilctl usr/bin
-etc/systemd/system/*.service etc/systemd/system
+lib/systemd/system/*.service lib/systemd/system
 EOF
 cat > /tmp/$PKGNAME/debian/postinst << EOF
 #!/bin/sh
 
+systemctl daemon-reload
+
 if ! getent group yggdrasil 2>&1 > /dev/null; then
-  groupadd --system --force yggdrasil || echo "Failed to create group 'yggdrasil' - please create it manually and reinstall"
+  groupadd --system --force yggdrasil
 fi
 
-if [ -f /etc/yggdrasil.conf ];
+if [ ! -d /etc/yggdrasil ];
+then
+    mkdir -p /etc/yggdrasil
+    chown root:yggdrasil /etc/yggdrasil
+    chmod 750 /etc/yggdrasil
+fi
+
+if [ ! -f /etc/yggdrasil/yggdrasil.conf ];
+then
+    test -f /etc/yggdrasil.conf && mv /etc/yggdrasil.conf /etc/yggdrasil/yggdrasil.conf
+fi
+
+if [ -f /etc/yggdrasil/yggdrasil.conf ];
 then
   mkdir -p /var/backups
   echo "Backing up configuration file to /var/backups/yggdrasil.conf.`date +%Y%m%d`"
-  cp /etc/yggdrasil.conf /var/backups/yggdrasil.conf.`date +%Y%m%d`
-  echo "Normalising and updating /etc/yggdrasil.conf"
-  /usr/bin/yggdrasil -useconffile /var/backups/yggdrasil.conf.`date +%Y%m%d` -normaliseconf > /etc/yggdrasil.conf
-  chgrp yggdrasil /etc/yggdrasil.conf
+  cp /etc/yggdrasil/yggdrasil.conf /var/backups/yggdrasil.conf.`date +%Y%m%d`
 
-  if command -v systemctl >/dev/null; then
-    systemctl daemon-reload >/dev/null || true
-    systemctl enable yggdrasil || true
-    systemctl start yggdrasil || true
-  fi
+  echo "Normalising and updating /etc/yggdrasil/yggdrasil.conf"
+  /usr/bin/yggdrasil -useconf -normaliseconf < /var/backups/yggdrasil.conf.`date +%Y%m%d` > /etc/yggdrasil/yggdrasil.conf
+
+  chown root:yggdrasil /etc/yggdrasil/yggdrasil.conf
+  chmod 640 /etc/yggdrasil/yggdrasil.conf
 else
-  echo "Generating initial configuration file /etc/yggdrasil.conf"
-  echo "Please familiarise yourself with this file before starting Yggdrasil"
-  /usr/bin/yggdrasil -genconf > /etc/yggdrasil.conf
-  chgrp yggdrasil /etc/yggdrasil.conf
+  echo "Generating initial configuration file /etc/yggdrasil/yggdrasil.conf"
+  /usr/bin/yggdrasil -genconf > /etc/yggdrasil/yggdrasil.conf
+
+  chown root:yggdrasil /etc/yggdrasil/yggdrasil.conf
+  chmod 640 /etc/yggdrasil/yggdrasil.conf
 fi
+
+systemctl enable yggdrasil
+systemctl restart yggdrasil
+
+exit 0
 EOF
 cat > /tmp/$PKGNAME/debian/prerm << EOF
 #!/bin/sh
@@ -109,12 +131,14 @@ EOF
 
 cp yggdrasil /tmp/$PKGNAME/usr/bin/
 cp yggdrasilctl /tmp/$PKGNAME/usr/bin/
-cp contrib/systemd/yggdrasil.service /tmp/$PKGNAME/etc/systemd/system/
+cp contrib/systemd/yggdrasil-default-config.service.debian /tmp/$PKGNAME/lib/systemd/system/yggdrasil-default-config.service
+cp contrib/systemd/yggdrasil.service.debian /tmp/$PKGNAME/lib/systemd/system/yggdrasil.service
 
-tar -czvf /tmp/$PKGNAME/data.tar.gz -C /tmp/$PKGNAME/ \
+tar --no-xattrs -czvf /tmp/$PKGNAME/data.tar.gz -C /tmp/$PKGNAME/ \
   usr/bin/yggdrasil usr/bin/yggdrasilctl \
-  etc/systemd/system/yggdrasil.service
-tar -czvf /tmp/$PKGNAME/control.tar.gz -C /tmp/$PKGNAME/debian .
+  lib/systemd/system/yggdrasil.service \
+  lib/systemd/system/yggdrasil-default-config.service
+tar --no-xattrs -czvf /tmp/$PKGNAME/control.tar.gz -C /tmp/$PKGNAME/debian .
 echo 2.0 > /tmp/$PKGNAME/debian-binary
 
 ar -r $PKGFILE \

contrib/docker/Dockerfile

@@ -5,13 +5,13 @@ WORKDIR /src
 
 ENV CGO_ENABLED=0
 
-RUN apk add git && ./build 
+RUN apk add git && ./build && go build -o /src/genkeys cmd/genkeys/main.go
 
 FROM docker.io/alpine
-LABEL maintainer="Christer Waren/CWINFO <christer.waren@cwinfo.org>"
 
 COPY --from=builder /src/yggdrasil /usr/bin/yggdrasil
 COPY --from=builder /src/yggdrasilctl /usr/bin/yggdrasilctl
+COPY --from=builder /src/genkeys /usr/bin/genkeys
 COPY contrib/docker/entrypoint.sh /usr/bin/entrypoint.sh
 
 # RUN addgroup -g 1000 -S yggdrasil-network \

contrib/macos/create-pkg.sh

@@ -15,6 +15,10 @@ command -v mkbom >/dev/null 2>&1 || (
   sudo make install || (echo "Failed to build mkbom"; exit 1)
 )
 
+# Build Yggdrasil
+echo "running GO111MODULE=on GOOS=darwin GOARCH=${PKGARCH-amd64} ./build"
+GO111MODULE=on GOOS=darwin GOARCH=${PKGARCH-amd64} ./build
+
 # Check if we can find the files we need - they should
 # exist if you are running this script from the root of
 # the yggdrasil-go repo and you have ran ./build
@@ -75,6 +79,7 @@ PKGNAME=$(sh contrib/semver/name.sh)
 PKGVERSION=$(sh contrib/semver/version.sh --bare)
 PKGARCH=${PKGARCH-amd64}
 PAYLOADSIZE=$(( $(wc -c pkgbuild/flat/base.pkg/Payload | awk '{ print $1 }') / 1024 ))
+[ "$PKGARCH" = "amd64" ] && PKGHOSTARCH="x86_64" || PKGHOSTARCH=${PKGARCH}
 
 # Create the PackageInfo file
 cat > pkgbuild/flat/base.pkg/PackageInfo << EOF
@@ -94,7 +99,7 @@ cat > pkgbuild/flat/Distribution << EOF
 <?xml version="1.0" encoding="utf-8"?>
 <installer-script minSpecVersion="1.000000" authoringTool="com.apple.PackageMaker" authoringToolVersion="3.0.3" authoringToolBuild="174">
     <title>Yggdrasil (${PKGNAME}-${PKGVERSION})</title>
-    <options customize="never" allow-external-scripts="no"/>
+    <options customize="never" allow-external-scripts="no" hostArchitectures="${PKGHOSTARCH}" />
     <domains enable_anywhere="true"/>
     <installation-check script="pm_install_check();"/>
     <script>

contrib/mobile/build

@@ -0,0 +1,62 @@
+#!/bin/sh
+
+set -ef
+
+[ ! -d contrib/mobile ] && (echo "Must run ./contrib/mobile/build [-i] [-a] from the repository top level folder"; exit 1)
+
+PKGSRC=${PKGSRC:-github.com/yggdrasil-network/yggdrasil-go/src/version}
+PKGNAME=${PKGNAME:-$(sh contrib/semver/name.sh)}
+PKGVER=${PKGVER:-$(sh contrib/semver/version.sh --bare)}
+GOVER=$(go version | { read _ _ version _; echo ${version#go}; })
+
+LDFLAGS="-X $PKGSRC.buildName=$PKGNAME -X $PKGSRC.buildVersion=$PKGVER"
+ARGS="-v"
+
+while getopts "aitc:l:d" option
+do
+  case "$option"
+  in
+  i) IOS=true;;
+  a) ANDROID=true;;
+  t) TABLES=true;;
+  c) GCFLAGS="$GCFLAGS $OPTARG";;
+  l) LDFLAGS="$LDFLAGS $OPTARG";;
+  d) ARGS="$ARGS -tags debug" DEBUG=true;;
+  esac
+done
+
+if [ -z $TABLES ] && [ -z $DEBUG ]; then
+  LDFLAGS="$LDFLAGS -s -w"
+fi
+
+if [ ! $IOS ] && [ ! $ANDROID ]; then 
+  echo "Must specify -a (Android), -i (iOS) or both"
+  exit 1
+fi
+
+ver_le() {
+    printf "$1\n$2\n" | sort -VC
+}
+
+if [ $ANDROID ] && ver_le 1.23.0 $GOVER ; then
+    # github.com/wlynxg/anet library relies on //go:linkname
+    LDFLAGS="$LDFLAGS -checklinkname=0"
+fi
+
+if [ $IOS ]; then
+  echo "Building framework for iOS"
+  go get golang.org/x/mobile/bind
+  gomobile bind \
+    -target ios,macos -tags mobile -o Yggdrasil.xcframework \
+    -ldflags="$LDFLAGS $STRIP" -gcflags="$GCFLAGS" \
+    ./contrib/mobile ./src/config;
+fi
+
+if [ $ANDROID ]; then
+  echo "Building aar for Android"
+  go get golang.org/x/mobile/bind
+  gomobile bind \
+    -target android -tags mobile -o yggdrasil.aar \
+    -ldflags="$LDFLAGS $STRIP" -gcflags="$GCFLAGS" \
+    ./contrib/mobile ./src/config;
+fi

contrib/mobile/mobile.go

@@ -0,0 +1,301 @@
+package mobile
+
+import (
+	"crypto/ed25519"
+	"encoding/hex"
+	"encoding/json"
+	"net"
+	"regexp"
+
+	"github.com/gologme/log"
+
+	"github.com/yggdrasil-network/yggdrasil-go/src/address"
+	"github.com/yggdrasil-network/yggdrasil-go/src/config"
+	"github.com/yggdrasil-network/yggdrasil-go/src/core"
+	"github.com/yggdrasil-network/yggdrasil-go/src/ipv6rwc"
+	"github.com/yggdrasil-network/yggdrasil-go/src/multicast"
+	"github.com/yggdrasil-network/yggdrasil-go/src/tun"
+	"github.com/yggdrasil-network/yggdrasil-go/src/version"
+)
+
+// Yggdrasil mobile package is meant to "plug the gap" for mobile support, as
+// Gomobile will not create headers for Swift/Obj-C etc if they have complex
+// (non-native) types. Therefore for iOS we will expose some nice simple
+// functions. Note that in the case of iOS we handle reading/writing to/from TUN
+// in Swift therefore we use the "dummy" TUN interface instead.
+type Yggdrasil struct {
+	core      *core.Core
+	iprwc     *ipv6rwc.ReadWriteCloser
+	config    *config.NodeConfig
+	multicast *multicast.Multicast
+	tun       *tun.TunAdapter // optional
+	log       MobileLogger
+	logger    *log.Logger
+}
+
+// StartAutoconfigure starts a node with a randomly generated config
+func (m *Yggdrasil) StartAutoconfigure() error {
+	return m.StartJSON([]byte("{}"))
+}
+
+// StartJSON starts a node with the given JSON config. You can get JSON config
+// (rather than HJSON) by using the GenerateConfigJSON() function
+func (m *Yggdrasil) StartJSON(configjson []byte) error {
+	setMemLimitIfPossible()
+
+	logger := log.New(m.log, "", 0)
+	logger.EnableLevel("error")
+	logger.EnableLevel("warn")
+	logger.EnableLevel("info")
+	m.logger = logger
+	m.config = config.GenerateConfig()
+	if err := m.config.UnmarshalHJSON(configjson); err != nil {
+		return err
+	}
+	// Set up the Yggdrasil node itself.
+	{
+		iprange := net.IPNet{
+			IP:   net.ParseIP("200::"),
+			Mask: net.CIDRMask(7, 128),
+		}
+		options := []core.SetupOption{
+			core.PeerFilter(func(ip net.IP) bool {
+				return !iprange.Contains(ip)
+			}),
+		}
+		for _, peer := range m.config.Peers {
+			options = append(options, core.Peer{URI: peer})
+		}
+		for intf, peers := range m.config.InterfacePeers {
+			for _, peer := range peers {
+				options = append(options, core.Peer{URI: peer, SourceInterface: intf})
+			}
+		}
+		for _, allowed := range m.config.AllowedPublicKeys {
+			k, err := hex.DecodeString(allowed)
+			if err != nil {
+				panic(err)
+			}
+			options = append(options, core.AllowedPublicKey(k[:]))
+		}
+		for _, lAddr := range m.config.Listen {
+			options = append(options, core.ListenAddress(lAddr))
+		}
+		var err error
+		m.core, err = core.New(m.config.Certificate, logger, options...)
+		if err != nil {
+			panic(err)
+		}
+		address, subnet := m.core.Address(), m.core.Subnet()
+		logger.Infof("Your public key is %s", hex.EncodeToString(m.core.PublicKey()))
+		logger.Infof("Your IPv6 address is %s", address.String())
+		logger.Infof("Your IPv6 subnet is %s", subnet.String())
+	}
+
+	// Set up the multicast module.
+	if len(m.config.MulticastInterfaces) > 0 {
+		var err error
+		logger.Infof("Initializing multicast %s", "")
+		options := []multicast.SetupOption{}
+		for _, intf := range m.config.MulticastInterfaces {
+			options = append(options, multicast.MulticastInterface{
+				Regex:    regexp.MustCompile(intf.Regex),
+				Beacon:   intf.Beacon,
+				Listen:   intf.Listen,
+				Port:     intf.Port,
+				Priority: uint8(intf.Priority),
+				Password: intf.Password,
+			})
+		}
+		logger.Infof("Starting multicast %s", "")
+		m.multicast, err = multicast.New(m.core, m.logger, options...)
+		if err != nil {
+			logger.Errorln("An error occurred starting multicast:", err)
+		}
+	}
+
+	mtu := m.config.IfMTU
+	m.iprwc = ipv6rwc.NewReadWriteCloser(m.core)
+	if m.iprwc.MaxMTU() < mtu {
+		mtu = m.iprwc.MaxMTU()
+	}
+	m.iprwc.SetMTU(mtu)
+	return nil
+}
+
+// Send sends a packet to Yggdrasil. It should be a fully formed
+// IPv6 packet
+func (m *Yggdrasil) Send(p []byte) error {
+	if m.iprwc == nil {
+		return nil
+	}
+	_, _ = m.iprwc.Write(p)
+	return nil
+}
+
+// Send sends a packet from given buffer to Yggdrasil. From first byte up to length.
+func (m *Yggdrasil) SendBuffer(p []byte, length int) error {
+	if m.iprwc == nil {
+		return nil
+	}
+	if len(p) < length {
+		return nil
+	}
+	_, _ = m.iprwc.Write(p[:length])
+	return nil
+}
+
+// Recv waits for and reads a packet coming from Yggdrasil. It
+// will be a fully formed IPv6 packet
+func (m *Yggdrasil) Recv() ([]byte, error) {
+	if m.iprwc == nil {
+		return nil, nil
+	}
+	var buf [65535]byte
+	n, _ := m.iprwc.Read(buf[:])
+	return buf[:n], nil
+}
+
+// Recv waits for and reads a packet coming from Yggdrasil to given buffer, returning size of packet
+func (m *Yggdrasil) RecvBuffer(buf []byte) (int, error) {
+	if m.iprwc == nil {
+		return 0, nil
+	}
+	n, _ := m.iprwc.Read(buf)
+	return n, nil
+}
+
+// Stop the mobile Yggdrasil instance
+func (m *Yggdrasil) Stop() error {
+	logger := log.New(m.log, "", 0)
+	logger.EnableLevel("info")
+	logger.Infof("Stopping the mobile Yggdrasil instance %s", "")
+	if m.multicast != nil {
+		logger.Infof("Stopping multicast %s", "")
+		if err := m.multicast.Stop(); err != nil {
+			return err
+		}
+	}
+	logger.Infof("Stopping TUN device %s", "")
+	if m.tun != nil {
+		if err := m.tun.Stop(); err != nil {
+			return err
+		}
+	}
+	logger.Infof("Stopping Yggdrasil core %s", "")
+	m.core.Stop()
+	return nil
+}
+
+// Retry resets the peer connection timer and tries to dial them immediately.
+func (m *Yggdrasil) RetryPeersNow() {
+	m.core.RetryPeersNow()
+}
+
+// GenerateConfigJSON generates mobile-friendly configuration in JSON format
+func GenerateConfigJSON() []byte {
+	nc := config.GenerateConfig()
+	nc.IfName = "none"
+	if json, err := json.Marshal(nc); err == nil {
+		return json
+	}
+	return nil
+}
+
+// GetAddressString gets the node's IPv6 address
+func (m *Yggdrasil) GetAddressString() string {
+	ip := m.core.Address()
+	return ip.String()
+}
+
+// GetSubnetString gets the node's IPv6 subnet in CIDR notation
+func (m *Yggdrasil) GetSubnetString() string {
+	subnet := m.core.Subnet()
+	return subnet.String()
+}
+
+// GetPublicKeyString gets the node's public key in hex form
+func (m *Yggdrasil) GetPublicKeyString() string {
+	return hex.EncodeToString(m.core.GetSelf().Key)
+}
+
+// GetRoutingEntries gets the number of entries in the routing table
+func (m *Yggdrasil) GetRoutingEntries() int {
+	return int(m.core.GetSelf().RoutingEntries)
+}
+
+func (m *Yggdrasil) GetPeersJSON() (result string) {
+	peers := []struct {
+		core.PeerInfo
+		IP string
+	}{}
+	for _, v := range m.core.GetPeers() {
+		var ip string
+		if v.Key != nil {
+			a := address.AddrForKey(v.Key)
+			ip = net.IP(a[:]).String()
+		}
+		peers = append(peers, struct {
+			core.PeerInfo
+			IP string
+		}{
+			PeerInfo: v,
+			IP:       ip,
+		})
+	}
+	if res, err := json.Marshal(peers); err == nil {
+		return string(res)
+	} else {
+		return "{}"
+	}
+}
+
+func (m *Yggdrasil) GetPathsJSON() (result string) {
+	if res, err := json.Marshal(m.core.GetPaths()); err == nil {
+		return string(res)
+	} else {
+		return "{}"
+	}
+}
+
+func (m *Yggdrasil) GetTreeJSON() (result string) {
+	if res, err := json.Marshal(m.core.GetTree()); err == nil {
+		return string(res)
+	} else {
+		return "{}"
+	}
+}
+
+// GetMTU returns the configured node MTU. This must be called AFTER Start.
+func (m *Yggdrasil) GetMTU() int {
+	return int(m.core.MTU())
+}
+
+func GetVersion() string {
+	return version.BuildVersion()
+}
+
+type ConfigSummary struct {
+	PublicKey   string
+	IPv6Address string
+	IPv6Subnet  string
+}
+
+func SummaryForConfig(b []byte) *ConfigSummary {
+	cfg := config.GenerateConfig()
+	if err := cfg.UnmarshalHJSON(b); err != nil {
+		return nil
+	}
+	pub := ed25519.PrivateKey(cfg.PrivateKey).Public().(ed25519.PublicKey)
+	hpub := hex.EncodeToString(pub)
+	addr := net.IP(address.AddrForKey(pub)[:])
+	snet := net.IPNet{
+		IP:   append(address.SubnetForKey(pub)[:], 0, 0, 0, 0, 0, 0, 0, 0),
+		Mask: net.CIDRMask(64, 128),
+	}
+	return &ConfigSummary{
+		PublicKey:   hpub,
+		IPv6Address: addr.String(),
+		IPv6Subnet:  snet.String(),
+	}
+}

contrib/mobile/mobile_android.go

@@ -1,6 +1,7 @@
+//go:build android
 // +build android
 
-package yggdrasil
+package mobile
 
 import "log"
 

contrib/mobile/mobile_apple.go

@@ -0,0 +1,40 @@
+//go:build ios || darwin
+// +build ios darwin
+
+package mobile
+
+/*
+#cgo CFLAGS: -x objective-c
+#cgo LDFLAGS: -framework Foundation
+#import <Foundation/Foundation.h>
+void Log(const char *text) {
+  NSString *nss = [NSString stringWithUTF8String:text];
+  NSLog(@"%@", nss);
+}
+*/
+import "C"
+import (
+	"unsafe"
+
+	"github.com/yggdrasil-network/yggdrasil-go/src/tun"
+)
+
+type MobileLogger struct {
+}
+
+func (nsl MobileLogger) Write(p []byte) (n int, err error) {
+	p = append(p, 0)
+	cstr := (*C.char)(unsafe.Pointer(&p[0]))
+	C.Log(cstr)
+	return len(p), nil
+}
+
+func (m *Yggdrasil) TakeOverTUN(fd int32) error {
+	options := []tun.SetupOption{
+		tun.FileDescriptor(fd),
+		tun.InterfaceMTU(m.iprwc.MTU()),
+	}
+	var err error
+	m.tun, err = tun.New(m.iprwc, m.logger, options...)
+	return err
+}

contrib/mobile/mobile_mem_go120.go

@@ -0,0 +1,10 @@
+//go:build go1.20
+// +build go1.20
+
+package mobile
+
+import "runtime/debug"
+
+func setMemLimitIfPossible() {
+	debug.SetMemoryLimit(1024 * 1024 * 40)
+}

contrib/mobile/mobile_mem_other.go

@@ -0,0 +1,8 @@
+//go:build !go1.20
+// +build !go1.20
+
+package mobile
+
+func setMemLimitIfPossible() {
+	// not supported by this Go version
+}

contrib/mobile/mobile_other.go

@@ -0,0 +1,14 @@
+//go:build !android && !ios && !darwin
+// +build !android,!ios,!darwin
+
+package mobile
+
+import "fmt"
+
+type MobileLogger struct {
+}
+
+func (nsl MobileLogger) Write(p []byte) (n int, err error) {
+	fmt.Print(string(p))
+	return len(p), nil
+}

contrib/mobile/mobile_test.go

@@ -0,0 +1,28 @@
+package mobile
+
+import (
+	"os"
+	"testing"
+
+	"github.com/gologme/log"
+)
+
+func TestStartYggdrasil(t *testing.T) {
+	logger := log.New(os.Stdout, "", 0)
+	logger.EnableLevel("error")
+	logger.EnableLevel("warn")
+	logger.EnableLevel("info")
+
+	ygg := &Yggdrasil{
+		logger: logger,
+	}
+	if err := ygg.StartAutoconfigure(); err != nil {
+		t.Fatalf("Failed to start Yggdrasil: %s", err)
+	}
+	t.Log("Address:", ygg.GetAddressString())
+	t.Log("Subnet:", ygg.GetSubnetString())
+	t.Log("Routing entries:", ygg.GetRoutingEntries())
+	if err := ygg.Stop(); err != nil {
+		t.Fatalf("Failed to stop Yggdrasil: %s", err)
+	}
+}

contrib/msi/build-msi.sh

@@ -0,0 +1,201 @@
+#!/bin/sh
+
+# This script generates an MSI file for Yggdrasil for a given architecture. It
+# needs to run on Windows within MSYS2 and Go 1.21 or later must be installed on
+# the system and within the PATH. This is ran currently by GitHub Actions (see
+# the workflows in the repository).
+#
+# Author: Neil Alexander <neilalexander@users.noreply.github.com>
+
+# Get arch from command line if given
+PKGARCH=$1
+if [ "${PKGARCH}" == "" ];
+then
+  echo "tell me the architecture: x86, x64, arm or arm64"
+  exit 1
+fi
+
+# Download the wix tools!
+dotnet tool install --global wix --version 5.0.0
+
+# Build Yggdrasil!
+[ "${PKGARCH}" == "x64" ] && GOOS=windows GOARCH=amd64 CGO_ENABLED=0 ./build
+[ "${PKGARCH}" == "x86" ] && GOOS=windows GOARCH=386 CGO_ENABLED=0 ./build
+[ "${PKGARCH}" == "arm" ] && GOOS=windows GOARCH=arm CGO_ENABLED=0 ./build
+[ "${PKGARCH}" == "arm64" ] && GOOS=windows GOARCH=arm64 CGO_ENABLED=0 ./build
+
+# Create the postinstall script
+cat > updateconfig.bat << EOF
+if not exist %ALLUSERSPROFILE%\\Yggdrasil (
+  mkdir %ALLUSERSPROFILE%\\Yggdrasil
+)
+if not exist %ALLUSERSPROFILE%\\Yggdrasil\\yggdrasil.conf (
+  if exist yggdrasil.exe (
+    yggdrasil.exe -genconf > %ALLUSERSPROFILE%\\Yggdrasil\\yggdrasil.conf
+  )
+)
+EOF
+
+# Work out metadata for the package info
+PKGNAME=$(sh contrib/semver/name.sh)
+PKGVERSION=$(sh contrib/msi/msversion.sh --bare)
+PKGVERSIONMS=$(echo $PKGVERSION | tr - .)
+([ "${PKGARCH}" == "x64" ] || [ "${PKGARCH}" == "arm64" ]) && \
+  PKGGUID="77757838-1a23-40a5-a720-c3b43e0260cc" PKGINSTFOLDER="ProgramFiles64Folder" || \
+  PKGGUID="54a3294e-a441-4322-aefb-3bb40dd022bb" PKGINSTFOLDER="ProgramFilesFolder"
+
+# Download the Wintun driver
+if [ ! -d wintun ];
+then
+  curl -o wintun.zip https://www.wintun.net/builds/wintun-0.14.1.zip
+  if [ `sha256sum wintun.zip | cut -f 1 -d " "` != "07c256185d6ee3652e09fa55c0b673e2624b565e02c4b9091c79ca7d2f24ef51" ];
+  then
+    echo "wintun package didn't match expected checksum"
+    exit 1
+  fi
+  unzip wintun.zip
+fi
+if [ $PKGARCH = "x64" ]; then
+  PKGWINTUNDLL=wintun/bin/amd64/wintun.dll
+elif [ $PKGARCH = "x86" ]; then
+  PKGWINTUNDLL=wintun/bin/x86/wintun.dll
+elif [ $PKGARCH = "arm" ]; then
+  PKGWINTUNDLL=wintun/bin/arm/wintun.dll
+elif [ $PKGARCH = "arm64" ]; then
+  PKGWINTUNDLL=wintun/bin/arm64/wintun.dll
+else
+  echo "wasn't sure which architecture to get wintun for"
+  exit 1
+fi
+
+if [ $PKGNAME != "master" ]; then
+  PKGDISPLAYNAME="Yggdrasil Network (${PKGNAME} branch)"
+else
+  PKGDISPLAYNAME="Yggdrasil Network"
+fi
+
+# Generate the wix.xml file
+cat > wix.xml << EOF
+<?xml version="1.0" encoding="windows-1252"?>
+<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
+  <Product
+    Name="${PKGDISPLAYNAME}"
+    Id="*"
+    UpgradeCode="${PKGGUID}"
+    Language="1033"
+    Codepage="1252"
+    Version="${PKGVERSIONMS}"
+    Manufacturer="github.com/yggdrasil-network">
+
+    <Package
+      Id="*"
+      Keywords="Installer"
+      Description="Yggdrasil Network Installer"
+      Comments="Yggdrasil Network standalone router for Windows."
+      Manufacturer="github.com/yggdrasil-network"
+      InstallerVersion="500"
+      InstallScope="perMachine"
+      Languages="1033"
+      Compressed="yes"
+      SummaryCodepage="1252" />
+
+    <MajorUpgrade
+      AllowDowngrades="yes" />
+
+    <Media
+      Id="1"
+      Cabinet="Media.cab"
+      EmbedCab="yes"
+      CompressionLevel="high" />
+
+    <Directory Id="TARGETDIR" Name="SourceDir">
+      <Directory Id="${PKGINSTFOLDER}" Name="PFiles">
+        <Directory Id="YggdrasilInstallFolder" Name="Yggdrasil">
+
+          <Component Id="MainExecutable" Guid="c2119231-2aa3-4962-867a-9759c87beb24">
+            <File
+              Id="Yggdrasil"
+              Name="yggdrasil.exe"
+              DiskId="1"
+              Source="yggdrasil.exe"
+              KeyPath="yes" />
+
+            <File
+              Id="Wintun"
+              Name="wintun.dll"
+              DiskId="1"
+              Source="${PKGWINTUNDLL}" />
+
+            <ServiceInstall
+              Id="ServiceInstaller"
+              Account="LocalSystem"
+              Description="Yggdrasil Network router process"
+              DisplayName="Yggdrasil Service"
+              ErrorControl="normal"
+              LoadOrderGroup="NetworkProvider"
+              Name="Yggdrasil"
+              Start="auto"
+              Type="ownProcess"
+              Arguments='-useconffile "%ALLUSERSPROFILE%\\Yggdrasil\\yggdrasil.conf" -logto "%ALLUSERSPROFILE%\\Yggdrasil\\yggdrasil.log"'
+              Vital="yes" />
+
+            <ServiceControl
+              Id="ServiceControl"
+              Name="yggdrasil"
+              Start="install"
+              Stop="both"
+              Remove="uninstall" />
+          </Component>
+
+          <Component Id="CtrlExecutable" Guid="a916b730-974d-42a1-b687-d9d504cbb86a">
+            <File
+              Id="Yggdrasilctl"
+              Name="yggdrasilctl.exe"
+              DiskId="1"
+              Source="yggdrasilctl.exe"
+              KeyPath="yes"/>
+          </Component>
+
+          <Component Id="ConfigScript" Guid="64a3733b-c98a-4732-85f3-20cd7da1a785">
+            <File
+              Id="Configbat"
+              Name="updateconfig.bat"
+              DiskId="1"
+              Source="updateconfig.bat"
+              KeyPath="yes"/>
+          </Component>
+        </Directory>
+      </Directory>
+    </Directory>
+
+    <Feature Id="YggdrasilFeature" Title="Yggdrasil" Level="1">
+      <ComponentRef Id="MainExecutable" />
+      <ComponentRef Id="CtrlExecutable" />
+      <ComponentRef Id="ConfigScript" />
+    </Feature>
+
+    <CustomAction
+      Id="UpdateGenerateConfig"
+      Directory="YggdrasilInstallFolder"
+      ExeCommand="cmd.exe /c updateconfig.bat"
+      Execute="deferred"
+      Return="check"
+      Impersonate="yes" />
+
+    <InstallExecuteSequence>
+      <Custom
+        Action="UpdateGenerateConfig"
+        Before="StartServices">
+          NOT Installed AND NOT REMOVE
+      </Custom>
+    </InstallExecuteSequence>
+
+  </Product>
+</Wix>
+EOF
+
+# Generate the MSI
+CANDLEFLAGS="-nologo"
+LIGHTFLAGS="-nologo -spdb -sice:ICE71 -sice:ICE61"
+candle $CANDLEFLAGS -out ${PKGNAME}-${PKGVERSION}-${PKGARCH}.wixobj -arch ${PKGARCH} wix.xml && \
+light $LIGHTFLAGS -ext WixUtilExtension.dll -out ${PKGNAME}-${PKGVERSION}-${PKGARCH}.msi ${PKGNAME}-${PKGVERSION}-${PKGARCH}.wixobj

contrib/msi/msversion.sh

@@ -0,0 +1,46 @@
+#!/bin/sh
+
+# Get the last tag
+TAG=$(git describe --abbrev=0 --tags --match="v[0-9]*\.[0-9]*\.[0-9]*" 2>/dev/null)
+
+# Did getting the tag succeed?
+if [ $? != 0 ] || [ -z "$TAG" ]; then
+  printf -- "unknown"
+  exit 0
+fi
+
+# Get the current branch
+BRANCH=$(git symbolic-ref -q HEAD --short 2>/dev/null)
+
+# Did getting the branch succeed?
+if [ $? != 0 ] || [ -z "$BRANCH" ]; then
+  BRANCH="master"
+fi
+
+# Split out into major, minor and patch numbers
+MAJOR=$(echo $TAG | cut -c 2- | cut -d "." -f 1)
+MINOR=$(echo $TAG | cut -c 2- | cut -d "." -f 2)
+PATCH=$(echo $TAG | cut -c 2- | cut -d "." -f 3 | awk -F"rc" '{print $1}')
+
+# Output in the desired format
+if [ $((PATCH)) -eq 0 ]; then
+  printf '%s%d.%d' "$PREPEND" "$((MAJOR))" "$((MINOR))"
+else
+  printf '%s%d.%d.%d' "$PREPEND" "$((MAJOR))" "$((MINOR))" "$((PATCH))"
+fi
+
+# Add the build tag on non-master branches
+if [ "$BRANCH" != "master" ]; then
+  BUILD=$(git rev-list --count $TAG..HEAD 2>/dev/null)
+
+  # Did getting the count of commits since the tag succeed?
+  if [ $? != 0 ] || [ -z "$BUILD" ]; then
+    printf -- "-unknown"
+    exit 0
+  fi
+
+  # Is the build greater than zero?
+  if [ $((BUILD)) -gt 0 ]; then
+      printf -- "-%04d" "$((BUILD))"
+  fi
+fi

contrib/openrc/yggdrasil

@@ -6,7 +6,6 @@ CONFFILE="/etc/yggdrasil.conf"
 pidfile="/run/${RC_SVCNAME}.pid"
 
 command="/usr/bin/yggdrasil"
-extra_started_commands="reload"
 
 depend() {
 	use net dns logger
@@ -42,12 +41,6 @@ start() {
 	eend $?
 }
 
-reload() {
-	ebegin "Reloading ${RC_SVCNAME}"
-	start-stop-daemon --signal HUP --pidfile "${pidfile}"
-	eend $?
-}
-
 stop() {
 	ebegin "Stopping ${RC_SVCNAME}"
 	start-stop-daemon --stop --pidfile "${pidfile}" --exec "${command}"

contrib/rpm/yggdrasil.spec

@@ -1,47 +0,0 @@
-Name:           yggdrasil
-Version:        0.3.0
-Release:        1%{?dist}
-Summary:        End-to-end encrypted IPv6 networking
-
-License:        GPLv3
-URL:            https://yggdrasil-network.github.io
-Source0:        https://codeload.github.com/yggdrasil-network/yggdrasil-go/tar.gz/v0.3.0
-
-%{?systemd_requires}
-BuildRequires:  systemd golang >= 1.11
-
-%description
-Yggdrasil is a proof-of-concept to explore a wholly different approach to
-network routing. Whereas current computer networks depend heavily on very
-centralised design and configuration, Yggdrasil breaks this mould by making
-use of a global spanning tree to form a scalable IPv6 encrypted mesh network.
-
-%prep
-%setup -qn yggdrasil-go-%{version}
-
-%build
-./build -t -l "-linkmode=external"
-
-%install
-rm -rf %{buildroot}
-mkdir -p %{buildroot}/%{_bindir}
-mkdir -p %{buildroot}/%{_sysconfdir}/systemd/system
-install -m 0755 yggdrasil %{buildroot}/%{_bindir}/yggdrasil
-install -m 0755 yggdrasilctl %{buildroot}/%{_bindir}/yggdrasilctl
-install -m 0755 contrib/systemd/yggdrasil.service %{buildroot}/%{_sysconfdir}/systemd/system/yggdrasil.service
-install -m 0755 contrib/systemd/yggdrasil-resume.service %{buildroot}/%{_sysconfdir}/systemd/system/yggdrasil-resume.service
-
-%files
-%{_bindir}/yggdrasil
-%{_bindir}/yggdrasilctl
-%{_sysconfdir}/systemd/system/yggdrasil.service
-%{_sysconfdir}/systemd/system/yggdrasil-resume.service
-
-%post
-%systemd_post yggdrasil.service
-
-%preun
-%systemd_preun yggdrasil.service
-
-%postun
-%systemd_postun_with_restart yggdrasil.service

contrib/semver/name.sh

@@ -1,12 +1,14 @@
 #!/bin/sh
 
 # Get the current branch name
-BRANCH=$(git symbolic-ref --short HEAD 2>/dev/null)
+BRANCH="$GITHUB_REF_NAME"
+if [ -z "$BRANCH" ]; then
+  BRANCH=$(git symbolic-ref --short HEAD 2>/dev/null)
+fi
 
-# Complain if the git history is not available
 if [ $? != 0 ] || [ -z "$BRANCH" ]; then
   printf "yggdrasil"
-  exit 1
+  exit 0
 fi
 
 # Remove "/" characters from the branch name if present

contrib/semver/version.sh

@@ -1,46 +1,11 @@
 #!/bin/sh
 
-# Get the last tag
-TAG=$(git describe --abbrev=0 --tags --match="v[0-9]*\.[0-9]*\.[0-9]*" 2>/dev/null)
-
-# Did getting the tag succeed?
-if [ $? != 0 ] || [ -z "$TAG" ]; then
-  printf -- "unknown"
-  exit 1
-fi
-
-# Get the current branch
-BRANCH=$(git symbolic-ref -q HEAD --short 2>/dev/null)
-
-# Did getting the branch succeed?
-if [ $? != 0 ] || [ -z "$BRANCH" ]; then
-  BRANCH="master"
-fi
-
-# Split out into major, minor and patch numbers
-MAJOR=$(echo $TAG | cut -c 2- | cut -d "." -f 1)
-MINOR=$(echo $TAG | cut -c 2- | cut -d "." -f 2)
-PATCH=$(echo $TAG | cut -c 2- | cut -d "." -f 3)
-
-# Output in the desired format
-if [ $((PATCH)) -eq 0 ]; then
-  printf '%s%d.%d' "$PREPEND" "$((MAJOR))" "$((MINOR))"
-else
-  printf '%s%d.%d.%d' "$PREPEND" "$((MAJOR))" "$((MINOR))" "$((PATCH))"
-fi
-
-# Add the build tag on non-master branches
-if [ "$BRANCH" != "master" ]; then
-  BUILD=$(git rev-list --count $TAG..HEAD 2>/dev/null)
-
-  # Did getting the count of commits since the tag succeed?
-  if [ $? != 0 ] || [ -z "$BUILD" ]; then
-    printf -- "-unknown"
-    exit 1
-  fi
-
-  # Is the build greater than zero?
-  if [ $((BUILD)) -gt 0 ]; then
-      printf -- "-%04d" "$((BUILD))"
-  fi
-fi
+case "$*" in
+  *--bare*)
+    # Remove the "v" prefix
+    git describe --tags --match="v[0-9]*\.[0-9]*\.[0-9]*" | cut -c 2-
+    ;;
+  *)
+    git describe --tags --match="v[0-9]*\.[0-9]*\.[0-9]*"
+    ;;
+esac

contrib/systemd/yggdrasil-default-config.service

@@ -0,0 +1,13 @@
+[Unit]
+Description=yggdrasil default config generator
+ConditionPathExists=|!/etc/yggdrasil.conf
+ConditionFileNotEmpty=|!/etc/yggdrasil.conf
+Wants=local-fs.target
+After=local-fs.target
+
+[Service]
+Type=oneshot
+Group=yggdrasil
+StandardOutput=file:/etc/yggdrasil.conf
+ExecStart=/usr/bin/yggdrasil -genconf
+ExecStartPost=/usr/bin/chmod 0640 /etc/yggdrasil.conf

contrib/systemd/yggdrasil-default-config.service.debian

@@ -0,0 +1,13 @@
+[Unit]
+Description=Yggdrasil default config generator
+ConditionPathExists=|!/etc/yggdrasil/yggdrasil.conf
+ConditionFileNotEmpty=|!/etc/yggdrasil/yggdrasil.conf
+Wants=local-fs.target
+After=local-fs.target
+
+[Service]
+Type=oneshot
+Group=yggdrasil
+ExecStartPre=/usr/bin/mkdir -p /etc/yggdrasil
+ExecStart=/usr/bin/yggdrasil -genconf > /etc/yggdrasil/yggdrasil.conf
+ExecStartPost=/usr/bin/chmod -R 0640 /etc/yggdrasil

contrib/systemd/yggdrasil.service

@@ -1,21 +1,21 @@
 [Unit]
 Description=yggdrasil
-Wants=network.target
-After=network.target
+Wants=network-online.target
+Wants=yggdrasil-default-config.service
+After=network-online.target
+After=yggdrasil-default-config.service
 
 [Service]
 Group=yggdrasil
 ProtectHome=true
 ProtectSystem=true
 SyslogIdentifier=yggdrasil
-ExecStartPre=/bin/sh -ec "if ! test -s /etc/yggdrasil.conf; \
-                then umask 077; \
-                yggdrasil -genconf > /etc/yggdrasil.conf; \
-                echo 'WARNING: A new /etc/yggdrasil.conf file has been generated.'; \
-            fi"
+CapabilityBoundingSet=CAP_NET_ADMIN CAP_NET_BIND_SERVICE
+ExecStartPre=+-/sbin/modprobe tun
 ExecStart=/usr/bin/yggdrasil -useconffile /etc/yggdrasil.conf
 ExecReload=/bin/kill -HUP $MAINPID
 Restart=always
+TimeoutStopSec=5
 
 [Install]
 WantedBy=multi-user.target

contrib/systemd/yggdrasil.service.debian

@@ -0,0 +1,25 @@
+[Unit]
+Description=Yggdrasil Network
+Wants=network-online.target
+Wants=yggdrasil-default-config.service
+After=network-online.target
+After=yggdrasil-default-config.service
+
+[Service]
+Group=yggdrasil
+ProtectHome=true
+ProtectSystem=strict
+NoNewPrivileges=true
+RuntimeDirectory=yggdrasil
+ReadWritePaths=/var/run/yggdrasil/ /run/yggdrasil/
+SyslogIdentifier=yggdrasil
+CapabilityBoundingSet=CAP_NET_ADMIN CAP_NET_BIND_SERVICE
+AmbientCapabilities=CAP_NET_ADMIN CAP_NET_BIND_SERVICE
+ExecStartPre=+-/sbin/modprobe tun
+ExecStart=/usr/bin/yggdrasil -useconffile /etc/yggdrasil/yggdrasil.conf
+ExecReload=/bin/kill -HUP $MAINPID
+Restart=always
+TimeoutStopSec=5
+
+[Install]
+WantedBy=multi-user.target

contrib/yggdrasil-brute-simple/LICENSE

@@ -0,0 +1,150 @@
+This software is released into the public domain. As such, it can be
+used under the Unlicense or CC0 public domain dedications.
+
+
+
+The Unlicense
+
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <http://unlicense.org/>
+
+
+
+CC0 1.0 Universal
+
+Statement of Purpose
+
+The laws of most jurisdictions throughout the world automatically confer
+exclusive Copyright and Related Rights (defined below) upon the creator and
+subsequent owner(s) (each and all, an "owner") of an original work of
+authorship and/or a database (each, a "Work").
+
+Certain owners wish to permanently relinquish those rights to a Work for the
+purpose of contributing to a commons of creative, cultural and scientific
+works ("Commons") that the public can reliably and without fear of later
+claims of infringement build upon, modify, incorporate in other works, reuse
+and redistribute as freely as possible in any form whatsoever and for any
+purposes, including without limitation commercial purposes. These owners may
+contribute to the Commons to promote the ideal of a free culture and the
+further production of creative, cultural and scientific works, or to gain
+reputation or greater distribution for their Work in part through the use and
+efforts of others.
+
+For these and/or other purposes and motivations, and without any expectation
+of additional consideration or compensation, the person associating CC0 with a
+Work (the "Affirmer"), to the extent that he or she is an owner of Copyright
+and Related Rights in the Work, voluntarily elects to apply CC0 to the Work
+and publicly distribute the Work under its terms, with knowledge of his or her
+Copyright and Related Rights in the Work and the meaning and intended legal
+effect of CC0 on those rights.
+
+1. Copyright and Related Rights. A Work made available under CC0 may be
+protected by copyright and related or neighboring rights ("Copyright and
+Related Rights"). Copyright and Related Rights include, but are not limited
+to, the following:
+
+  i. the right to reproduce, adapt, distribute, perform, display, communicate,
+  and translate a Work;
+
+  ii. moral rights retained by the original author(s) and/or performer(s);
+
+  iii. publicity and privacy rights pertaining to a person's image or likeness
+  depicted in a Work;
+
+  iv. rights protecting against unfair competition in regards to a Work,
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contrib/yggdrasil-brute-simple/Makefile

@@ -0,0 +1,12 @@
+.PHONY: all
+
+all: util yggdrasil-brute-multi-curve25519 yggdrasil-brute-multi-ed25519
+
+util: util.c
+	gcc -Wall -std=c89 -O3 -c -o util.o util.c
+
+yggdrasil-brute-multi-ed25519: yggdrasil-brute-multi-ed25519.c util.o
+	gcc -Wall -std=c89 -O3 -o yggdrasil-brute-multi-ed25519 -lsodium yggdrasil-brute-multi-ed25519.c util.o
+
+yggdrasil-brute-multi-curve25519: yggdrasil-brute-multi-curve25519.c util.o
+	gcc -Wall -std=c89 -O3 -o yggdrasil-brute-multi-curve25519 -lsodium yggdrasil-brute-multi-curve25519.c util.o

contrib/yggdrasil-brute-simple/README.md

@@ -0,0 +1,8 @@
+# yggdrasil-brute-simple
+
+Simple program for finding curve25519 and ed25519 public keys whose sha512 hash has many leading ones.
+Because ed25519 private keys consist of a seed that is hashed to find the secret part of the keypair,
+this program is near optimal for finding ed25519 keypairs. Curve25519 key generation, on the other hand,
+could be further optimized with elliptic curve magic.
+
+Depends on libsodium.

contrib/yggdrasil-brute-simple/util.c

@@ -0,0 +1,62 @@
+#include "yggdrasil-brute.h"
+
+int find_where(unsigned char hash[64], unsigned char besthashlist[NUMKEYS][64]) {
+	/* Where to insert hash into sorted hashlist */
+	int j;
+	int where = -1;
+	for (j = 0; j < NUMKEYS; ++j) {
+		if (memcmp(hash, besthashlist[j], 64) > 0) ++where;
+		else break;
+	}
+	return where;
+}
+
+void insert_64(unsigned char itemlist[NUMKEYS][64], unsigned char item[64], int where) {
+	int j;
+	for (j = 0; j < where; ++j) {
+		memcpy(itemlist[j], itemlist[j+1], 64);
+	}
+	memcpy(itemlist[where], item, 64);
+}
+
+void insert_32(unsigned char itemlist[NUMKEYS][32], unsigned char item[32], int where) {
+	int j;
+	for (j = 0; j < where; ++j) {
+		memcpy(itemlist[j], itemlist[j+1], 32);
+	}
+	memcpy(itemlist[where], item, 32);
+}
+
+void make_addr(unsigned char addr[32], unsigned char hash[64]) {
+	/* Public key hash to yggdrasil ipv6 address */
+	int i;
+	int offset;
+	unsigned char mask;
+	unsigned char c;
+	int ones = 0;
+	unsigned char br = 0; /* false */
+	for (i = 0; i < 64 && !br; ++i) {
+		mask = 128;
+		c = hash[i];
+		while (mask) {
+			if (c & mask) {
+				++ones;
+			} else {
+				br = 1; /* true */
+				break;
+			}
+			mask >>= 1;
+		}
+	}
+
+	addr[0] = 2;
+	addr[1] = ones;
+
+	offset = ones + 1;
+	for (i = 0; i < 14; ++i) {
+		c = hash[offset/8] << (offset%8);
+		c |= hash[offset/8 + 1] >> (8 - offset%8);
+		addr[i + 2] = c;
+		offset += 8;
+	}
+}

contrib/yggdrasil-brute-simple/yggdrasil-brute-multi-curve25519.c

@@ -0,0 +1,105 @@
+/*
+sk: 32 random bytes
+sk[0] &= 248;
+sk[31] &= 127;
+sk[31] |= 64;
+
+increment sk
+pk = curve25519_scalarmult_base(mysecret)
+hash = sha512(pk)
+
+if besthash:
+	bestsk = sk
+	besthash = hash
+*/
+
+#include "yggdrasil-brute.h"
+
+
+void seed(unsigned char sk[32]) {
+	randombytes_buf(sk, 32);
+	sk[0] &= 248;
+	sk[31] &= 127;
+	sk[31] |= 64;
+}
+
+
+int main(int argc, char **argv) {
+	int i;
+	int j;
+	unsigned char addr[16];
+	time_t starttime;
+	time_t requestedtime;
+
+	unsigned char bestsklist[NUMKEYS][32];
+	unsigned char bestpklist[NUMKEYS][32];
+	unsigned char besthashlist[NUMKEYS][64];
+
+	unsigned char sk[32];
+	unsigned char pk[32];
+	unsigned char hash[64];
+
+	unsigned int runs = 0;
+	int where;
+
+	if (argc != 2) {
+		fprintf(stderr, "usage: ./yggdrasil-brute-multi-curve25519 <seconds>\n");
+		return 1;
+	}
+
+	if (sodium_init() < 0) {
+		/* panic! the library couldn't be initialized, it is not safe to use */
+		printf("sodium init failed!\n");
+		return 1;
+	}
+
+	starttime = time(NULL);
+	requestedtime = atoi(argv[1]);
+
+	if (requestedtime < 0) requestedtime = 0;
+	fprintf(stderr, "Searching for yggdrasil curve25519 keys (this will take slightly longer than %ld seconds)\n", requestedtime);
+
+	sodium_memzero(bestsklist, NUMKEYS * 32);
+	sodium_memzero(bestpklist, NUMKEYS * 32);
+	sodium_memzero(besthashlist, NUMKEYS * 64);
+	seed(sk);
+
+	do {
+		/* generate pubkey, hash, compare, increment secret.
+		 * this loop should take 4 seconds on modern hardware */
+		for (i = 0; i < (1 << 16); ++i) {
+			++runs;
+			if (crypto_scalarmult_curve25519_base(pk, sk) != 0) {
+				printf("scalarmult to create pub failed!\n");
+				return 1;
+			}
+			crypto_hash_sha512(hash, pk, 32);
+
+			where = find_where(hash, besthashlist);
+			if (where >= 0) {
+				insert_32(bestsklist, sk, where);
+				insert_32(bestpklist, pk, where);
+				insert_64(besthashlist, hash, where);
+
+				seed(sk);
+			}
+			for (j = 1; j < 31; ++j) if (++sk[j]) break;
+		}
+	} while (time(NULL) - starttime < requestedtime || runs < NUMKEYS);
+
+	fprintf(stderr, "--------------addr-------------- -----------------------------secret----------------------------- -----------------------------public-----------------------------\n");
+	for (i = 0; i < NUMKEYS; ++i) {
+		make_addr(addr, besthashlist[i]);
+		for (j = 0; j < 16; ++j) printf("%02x", addr[j]);
+		printf(" ");
+		for (j = 0; j < 32; ++j) printf("%02x", bestsklist[i][j]);
+		printf(" ");
+		for (j = 0; j < 32; ++j) printf("%02x", bestpklist[i][j]);
+		printf("\n");
+	}
+
+	sodium_memzero(bestsklist, NUMKEYS * 32);
+	sodium_memzero(sk, 32);
+
+	return 0;
+}

contrib/yggdrasil-brute-simple/yggdrasil-brute-multi-ed25519.c

@@ -0,0 +1,106 @@
+/*
+seed: 32 random bytes
+sk: sha512(seed)
+sk[0] &= 248
+sk[31] &= 127
+sk[31] |= 64
+
+pk: scalarmult_ed25519_base(sk)
+
+
+increment seed
+generate sk
+generate pk
+hash = sha512(mypub)
+
+if besthash:
+	bestseed = seed
+	bestseckey = sk
+	bestpubkey = pk
+	besthash = hash
+*/
+
+#include "yggdrasil-brute.h"
+
+
+int main(int argc, char **argv) {
+	int i;
+	int j;
+	time_t starttime;
+	time_t requestedtime;
+
+	unsigned char bestsklist[NUMKEYS][64]; /* sk contains pk */
+	unsigned char besthashlist[NUMKEYS][64];
+
+	unsigned char seed[32];
+	unsigned char sk[64];
+	unsigned char pk[32];
+	unsigned char hash[64];
+
+	unsigned int runs = 0;
+	int where;
+
+	if (argc != 2) {
+		fprintf(stderr, "usage: ./yggdrasil-brute-multi-curve25519 <seconds>\n");
+		return 1;
+	}
+
+	if (sodium_init() < 0) {
+		/* panic! the library couldn't be initialized, it is not safe to use */
+		printf("sodium init failed!\n");
+		return 1;
+	}
+
+	starttime = time(NULL);
+	requestedtime = atoi(argv[1]);
+
+	if (requestedtime < 0) requestedtime = 0;
+	fprintf(stderr, "Searching for yggdrasil ed25519 keys (this will take slightly longer than %ld seconds)\n", requestedtime);
+
+	sodium_memzero(bestsklist, NUMKEYS * 64);
+	sodium_memzero(besthashlist, NUMKEYS * 64);
+	randombytes_buf(seed, 32);
+
+	do {
+		/* generate pubkey, hash, compare, increment secret.
+		 * this loop should take 4 seconds on modern hardware */
+		for (i = 0; i < (1 << 17); ++i) {
+			++runs;
+			crypto_hash_sha512(sk, seed, 32);
+
+			if (crypto_scalarmult_ed25519_base(pk, sk) != 0) {
+				printf("scalarmult to create pub failed!\n");
+				return 1;
+			}
+			memcpy(sk + 32, pk, 32);
+
+			crypto_hash_sha512(hash, pk, 32);
+
+			/* insert into local list of good key */
+			where = find_where(hash, besthashlist);
+			if (where >= 0) {
+				insert_64(bestsklist, sk, where);
+				insert_64(besthashlist, hash, where);
+				randombytes_buf(seed, 32);
+			}
+			for (j = 1; j < 31; ++j) if (++seed[j]) break;
+		}
+	} while (time(NULL) - starttime < requestedtime || runs < NUMKEYS);
+
+	fprintf(stderr, "!! Secret key is seed concatenated with public !!\n");
+	fprintf(stderr, "---hash--- ------------------------------seed------------------------------ -----------------------------public-----------------------------\n");
+	for (i = 0; i < NUMKEYS; ++i) {
+		for (j = 0; j < 5; ++j) printf("%02x", besthashlist[i][j]);
+		printf(" ");
+		for (j = 0; j < 32; ++j) printf("%02x", bestsklist[i][j]);
+		printf(" ");
+		for (j = 32; j < 64; ++j) printf("%02x", bestsklist[i][j]);
+		printf("\n");
+	}
+
+	sodium_memzero(bestsklist, NUMKEYS * 64);
+	sodium_memzero(sk, 64);
+	sodium_memzero(seed, 32);
+
+	return 0;
+}

contrib/yggdrasil-brute-simple/yggdrasil-brute.h

@@ -0,0 +1,12 @@
+#include <sodium.h>
+#include <stdio.h>  /* printf */
+#include <string.h> /* memcpy */
+#include <stdlib.h> /* atoi */
+#include <time.h> /* time */
+
+
+#define NUMKEYS 10
+void make_addr(unsigned char addr[32], unsigned char hash[64]);
+int find_where(unsigned char hash[64], unsigned char besthashlist[NUMKEYS][64]);
+void insert_64(unsigned char itemlist[NUMKEYS][64], unsigned char item[64], int where);
+void insert_32(unsigned char itemlist[NUMKEYS][32], unsigned char item[32], int where);

doc/Whitepaper.md

@@ -1,148 +0,0 @@
-# Yggdasil
-
-Note: This is a very rough early draft.
-
-Yggdrasil is an encrypted IPv6 network running in the [`200::/7` address range](https://en.wikipedia.org/wiki/Unique_local_address).
-It is an experimental/toy network, so failure is acceptable, as long as it's instructive to see how it breaks if/when everything falls apart.
-
-IP addresses are derived from cryptographic keys, to reduce the need for public key infrastructure.
-A form of locator/identifier separation (similar in goal to [LISP](https://en.wikipedia.org/wiki/Locator/Identifier_Separation_Protocol)) is used to map static identifiers (IP addresses) onto dynamic routing information (locators), using a [distributed hash table](https://en.wikipedia.org/wiki/Distributed_hash_table) (DHT).
-Locators are used to approximate the distance between nodes in the network, where the approximate distance is the length of a real worst-case-scenario path through the network.
-This is (arguably) easier to secure and requires less information about the network than commonly used routing schemes.
-
-While not technically a [compact routing scheme](https://arxiv.org/abs/0708.2309), tests on real-world networks suggest that routing in this style incurs stretch comparable to the name-dependent compact routing schemes designed for static networks.
-Compared to compact routing schemes, Yggdrasil appears to have smaller average routing table sizes, works on dynamic networks, and is name-independent.
-It currently lacks the provable bounds of compact routing schemes, and there's a serious argument to be made that it cheats by stretching the definition of some of the above terms, but the main point to be emphasized is that there are trade-offs between different concerns when trying to route traffic, and we'd rather make every part *good* than try to make any one part *perfect*.
-In that sense, Yggdrasil seems to be competitive, on what are supposedly realistic networks, with compact routing schemes.
-
-## Addressing
-
-Yggdrasil uses a truncated version of a `NodeID` to assign addresses.
-An address is assigned from the `200::/7` prefix, according to the following:
-
-1. Begin with `0x02` as the first byte of the address, or `0x03` if it's a `/64` prefix.
-2. Count the number of leading `1` bits in the NodeID.
-3. Set the second byte of the address to the number of leading `1` bits in the NodeID (8 bit unsigned integer, at most 255).
-4. Append the NodeID to the remaining bits of the address, truncating the leading `1` bits and the first `0` bit, to a total address size of 128 bits.
-
-The last bit of the first byte is used to flag if an address is for a router (`200::/8`), or part of an advertised prefix (`300::/8`), where each router owns a `/64` that matches their address (except with the eight bit set to 1 instead of 0).
-This allows the prefix to be advertised to the router's LAN, so unsupported devices can still connect to the network (e.g. network printers).
-
-The NodeID is a [sha512sum](https://en.wikipedia.org/wiki/SHA-512) of a node's public encryption key.
-Addresses are checked that they match NodeID, to prevent address spoofing.
-As such, while a 128 bit IPv6 address is likely too short to be considered secure by cryptographer standards, there is a significant cost in attempting to cause an address collision.
-Addresses can be made more secure by brute force generating a large number of leading `1` bits in the NodeID.
-
-When connecting to a node, the IP address is unpacked into the known bits of the NodeID and a matching bitmask to track which bits are significant.
-A node is only communicated with if its `NodeID` matches its public key and the known `NodeID` bits from the address.
-
-It is important to note that only `NodeID` is used internally for routing, so the addressing scheme could in theory be changed without breaking compatibility with intermediate routers.
-This has been done once, when moving the address range from the `fd00::/8` ULA range to the reserved-but-[deprecated](https://tools.ietf.org/html/rfc4048) `200::/7` range.
-Further addressing scheme changes could occur if, for example, an IPv7 format ever emerges.
-
-### Cryptography
-
-Public key encryption is done using the `golang.org/x/crypto/nacl/box`, which uses [Curve25519](https://en.wikipedia.org/wiki/Curve25519), [XSalsa20](https://en.wikipedia.org/wiki/Salsa20), and [Poly1305](https://en.wikipedia.org/wiki/Poly1305) for key exchange, encryption, and authentication (interoperable with [NaCl](https://en.wikipedia.org/wiki/NaCl_(software))).
-Permanent keys are used only for protocol traffic, with random nonces generated on a per-packet basis using `crypto/rand` from Go's standard library.
-Ephemeral session keys (for [forward secrecy](https://en.wikipedia.org/wiki/Forward_secrecy)) are generated for encapsulated IPv6 traffic, using the same set of primitives, with random initial nonces that are subsequently incremented.
-A list of recently received session nonces is kept (as a bitmask) and checked to reject duplicated packets, in an effort to block duplicate packets and replay attacks.
-A separate set of keys are generated and used for signing with [Ed25519](https://en.wikipedia.org/wiki/Ed25519), which is used by the routing layer to secure construction of a spanning tree.
-
-### Prefixes
-
-Recall that each node's address is in the lower half of the address range, I.e. `200::/8`. A `/64` prefix is made available to each node under `300::/8`, where the remaining bits of the prefix match the node's address under `200::/8`.
-A node may optionally advertise a prefix on their local area network, which allows unsupported or legacy devices with IPv6 support to connect to the network.
-Note that there are 64 fewer bits of `NodeID` available to check in each address from a routing prefix, so it makes sense to brute force a `NodeID` with more significant bits in the address if this approach is to be used.
-Running `genkeys.go` will do this by default.
-
-## Locators and Routing
-
-Locators are generated using information from a spanning tree (described below).
-The result is that each node has a set of [coordinates in a greedy metric space](https://en.wikipedia.org/wiki/Greedy_embedding).
-These coordinates are used as a distance label.
-Given the coordinates of any two nodes, it is possible to calculate the length of some real path through the network between the two nodes.
-
-Traffic is forwarded using a [greedy routing](https://en.wikipedia.org/wiki/Small-world_routing#Greedy_routing) scheme, where each node forwards the packet to a one-hop neighbor that is closer to the destination (according to this distance metric) than the current node.
-In particular, when a packet needs to be forwarded, a node will forward it to whatever peer is closest to the destination in the greedy [metric space](https://en.wikipedia.org/wiki/Metric_space) used by the network, provided that the peer is closer to the destination than the current node.
-
-If no closer peers are idle, then the packet is queued in FIFO order, with separate queues per destination coords (currently, as a bit of a hack, IPv6 flow labels are embedeed after the end of the significant part of the coords, so queues distinguish between different traffic streams with the same destination).
-Whenever the node finishes forwarding a packet to a peer, it checks the queues, and will forward the first packet from the queue with the maximum `<age of first packet>/<queue size in bytes>`, i.e. the bandwidth the queue is attempting to use, subject to the constraint that the peer is a valid next hop (i.e. closer to the destination than the current node).
-If no non-empty queue is available, then the peer is added to the idle set, forward packets when the need arises.
-
-This acts as a crude approximation of backpressure routing, where the remote queue sizes are assumed to be equal to the distance of a node from a destination (rather than communicating queue size information), and packets are never forwarded "backwards" through the network, but congestion on a local link is routed around when possible.
-The queue selection strategy behaves similar to shortest-queue-first, in that a larger fration of available bandwith to sessions that attempt to use less bandwidth, and is loosely based on the rationale behind some proposed solutions to the [cake-cutting](https://en.wikipedia.org/wiki/Fair_cake-cutting) problem.
-
-The queue size is limited to 4 MB. If a packet is added to a queue and the total size of all queues is larger than this threshold, then a random queue is selected (with odds proportional to relative queue sizes), and the first packet from that queue is dropped, with the process repeated until the total queue size drops below the allowed threshold.
-
-Note that this forwarding procedure generalizes to nodes that are not one-hop neighbors, but the current implementation omits the use of more distant neighbors, as this is expected to be a minor optimization (it would add per-link control traffic to pass path-vector-like information about a subset of the network, which is a lot of overhead compared to the current setup).
-
-### Spanning Tree
-
-A [spanning tree](https://en.wikipedia.org/wiki/Spanning_tree) is constructed with the tree rooted at the highest TreeID, where TreeID is equal to a sha512sum of a node's public [Ed25519](https://en.wikipedia.org/wiki/Ed25519) key (used for signing).
-A node sends periodic advertisement messages to each neighbor.
-The advertisement contains the coords that match the path from the root through the node, plus one additional hop from the node to the neighbor being advertised to.
-Each hop in this advertisement includes a matching ed25519 signature.
-These signatures prevent nodes from forging arbitrary routing advertisements.
-
-The first hop, from the root, also includes a sequence number, which must be updated periodically.
-A node will blacklist the current root (keeping a record of the last sequence number observed) if the root fails to update for longer than some timeout (currently hard coded at 1 minute).
-Normally, a root node will update their sequence number for frequently than this (once every 30 seconds).
-Nodes are throttled to ignore updates with a new sequence number for some period after updating their most recently seen sequence number (currently this cooldown is 15 seconds).
-The implementation chooses to set the sequence number equal to the unix time on the root's clock, so that a new (higher) sequence number will be selected if the root is restarted and the clock is not set back.
-
-Other than the root node, every other node in the network must select one of its neighbors to use as their parent.
-This selection is done by tracking when each neighbor first sends us a message with a new timestamp from the root, to determine the ordering of the latency of each path from the root, to each neighbor, and then to the node that's searching for a parent.
-These relative latencies are tracked by, for each neighbor, keeping a score vs each other neighbor.
-If a neighbor sends a message with an updated timestamp before another neighbor, then the faster neighbor's score is increased by 1.
-If the neighbor sends a message slower, then the score is decreased by 2, to make sure that a node must be reliably faster (at least 2/3 of the time) to see a net score increase over time.
-If a node begins to advertise new coordinates, then its score vs all other nodes is reset to 0.
-A node switches to a new parent if a neighbor's score (vs the current parent) reaches some threshold, currently 240, which corresponds to about 2 hours of being a reliably faster path.
-The intended outcome of this process is that stable connections from fixed infrastructure near the "core" of the network should (eventually) select parents that minimize latency from the root to themselves, while the more dynamic parts of the network, presumably more towards the edges, will try to favor reliability when selecting a parent.
-
-The distance metric between nodes is simply the distance between the nodes if they routed on the spanning tree.
-This is equal to the sum of the distance from each node to the last common ancestor of the two nodes being compared.
-The locator then consists of a root's key, timestamp, and coordinates representing each hop in the path from the root to the node.
-In practice, only the coords are used for routing, while the root and timestamp, along with all the per-hop signatures, are needed to securely construct the spanning tree.
-
-## Name-independent routing
-
-A [Chord](https://en.wikipedia.org/wiki/Chord_(peer-to-peer))-like Distributed Hash Table (DHT) is used as a distributed database that maps NodeIDs onto coordinates in the spanning tree metric space.
-The DHT is Chord-like in that it uses a successor/predecessor structure to do lookups in `O(n)` time with `O(1)` entries, then augments this with some additional information, adding roughly `O(logn)` additional entries, to reduce the lookup time to something around `O(logn)`.
-In the long term, the idea is to favor spending our bandwidth making sure the minimum `O(1)` part is right, to prioritize correctness, and then try to conserve bandwidth (and power) by being a bit lazy about checking the remaining `O(logn)` portion when it's not in use.
-
-To be specific, the DHT stores the immediate successor of a node, plus the next node it manages to find which is strictly closer (by the tree hop-count metric) than all previous nodes.
-The same process is repeated for predecessor nodes, and lookups walk the network in the predecessor direction, with each key being owned by its successor (to make sure defaulting to 0 for unknown bits of a `NodeID` doesn't cause us to overshoot the target during a lookup).
-In addition, all of a node's one-hop neighbors are included in the DHT, since we get this information "for free", and we must include it in our DHT to ensure that the network doesn't diverge to a broken state (though I suspect that only adding parents or parent-child relationships may be sufficient -- worth trying to prove or disprove, if somebody's bored).
-The DHT differs from Chord in that there are no values in the key:value store -- it only stores information about DHT peers -- and that it uses a [Kademlia](https://en.wikipedia.org/wiki/Kademlia)-inspired iterative-parallel lookup process.
-
-To summarize the entire routing procedure, when given only a node's IP address, the goal is to find a route to the destination.
-That happens through 3 steps:
-
-1. The address is unpacked into the known bits of a NodeID and a bitmask to signal which bits of the NodeID are known (the unknown bits are ignored).
-2. A DHT search is performed, which normally results in a response from the node closest in the DHT keyspace to the target `NodeID`. The response contains the node's curve25519 public key, which is checked to match the `NodeID` (and therefore the address), as well as the node's coordinates.
-3. Using the keys and coords from the above step, an ephemeral key exchange occurs between the source and destination nodes. These ephemeral session keys are used to encrypt any ordinary IPv6 traffic that may be encapsulated and sent between the nodes.
-
-From that point, the session keys and coords are cached and used to encrypt and send traffic between nodes. This is *mostly* transparent to the user: the initial DHT lookup and key exchange takes at least 2 round trips, so there's some delay before session setup completes and normal IPv6 traffic can flow. This is similar to the delay caused by a DNS lookup, although it generally takes longer, as a DHT lookup requires multiple iterations to reach the destination.
-
-## Project Status and Plans
-
-The current (Go) implementation is considered alpha, so compatibility with future versions is neither guaranteed nor expected.
-While users are discouraged from running anything truly critical on top of it, as of writing, it seems reliable enough for day-to-day use.
-
-As an "alpha" quality release, Yggdrasil *should* at least be able to detect incompatible versions when it sees them, and warn the users that an update may be needed.
-A "beta" quality release should know enough to be compatible in the face of wire format changes, and reasonably feature complete.
-A "stable" 1.0 release, if it ever happens, would probably be feature complete, with no expectation of future wire format changes, and free of known critical bugs.
-
-Roughly speaking, there are a few obvious ways the project could turn out:
-
-1. The developers could lose interest before it goes anywhere.
-2. The project could be reasonably complete (beta or stable), but never gain a significant number of users.
-3. The network may grow large enough that fundamental (non-fixable) design problems appear, which is hopefully a learning experience, but the project may die as a result.
-4. The network may grow large, but never hit any design problems, in which case we need to think about either moving the important parts into other projects ([cjdns](https://github.com/cjdelisle/cjdns)) or rewriting compatible implementations that are better optimized for the target platforms (e.g. a linux kernel module).
-
-That last one is probably impossible, because the speed of light would *eventually* become a problem, for a sufficiently large network.
-If the only thing limiting network growth turns out to be the underlying physics, then that arguably counts as a win.
-
-Also, note that some design decisions were made for ease-of-programming or ease-of-testing reasons, and likely need to be reconsidered at some point.
-In particular, Yggdrasil currently uses TCP for connections with one-hop neighbors, which introduces an additional layer of buffering that can lead to increased and/or unstable latency in congested areas of the network.
-

doc/yggdrasil-network.github.io

@@ -1 +0,0 @@
-Subproject commit 10672210f2fdce97dd5c301dfeed47284d4a28f2

go.mod

@@ -1,15 +1,49 @@
 module github.com/yggdrasil-network/yggdrasil-go
 
+go 1.22
+
 require (
-	github.com/docker/libcontainer v2.2.1+incompatible
-	github.com/gologme/log v0.0.0-20181207131047-4e5d8ccb38e8
-	github.com/hjson/hjson-go v0.0.0-20181010104306-a25ecf6bd222
-	github.com/kardianos/minwinsvc v0.0.0-20151122163309-cad6b2b879b0
-	github.com/mitchellh/mapstructure v1.1.2
-	github.com/songgao/packets v0.0.0-20160404182456-549a10cd4091
-	github.com/yggdrasil-network/water v0.0.0-20180615095340-f732c88f34ae
-	golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9
-	golang.org/x/net v0.0.0-20181207154023-610586996380
-	golang.org/x/sys v0.0.0-20181206074257-70b957f3b65e
-	golang.org/x/text v0.3.0
+	github.com/Arceliar/ironwood v0.0.0-20241213013129-743fe2fccbd3
+	github.com/Arceliar/phony v0.0.0-20220903101357-530938a4b13d
+	github.com/cheggaaa/pb/v3 v3.1.5
+	github.com/coder/websocket v1.8.12
+	github.com/gologme/log v1.3.0
+	github.com/hashicorp/go-syslog v1.0.0
+	github.com/hjson/hjson-go/v4 v4.4.0
+	github.com/kardianos/minwinsvc v1.0.2
+	github.com/quic-go/quic-go v0.48.2
+	github.com/vishvananda/netlink v1.3.0
+	github.com/wlynxg/anet v0.0.5
+	golang.org/x/crypto v0.33.0
+	golang.org/x/net v0.35.0
+	golang.org/x/sys v0.30.0
+	golang.org/x/text v0.22.0
+	golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2
+	golang.zx2c4.com/wireguard v0.0.0-20231211153847-12269c276173
+	golang.zx2c4.com/wireguard/windows v0.5.3
+)
+
+require (
+	github.com/bits-and-blooms/bitset v1.13.0 // indirect
+	github.com/bits-and-blooms/bloom/v3 v3.7.0 // indirect
+	github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 // indirect
+	github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/onsi/ginkgo/v2 v2.9.5 // indirect
+	github.com/rivo/uniseg v0.2.0 // indirect
+	go.uber.org/mock v0.5.0 // indirect
+	golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56 // indirect
+	golang.org/x/mod v0.19.0 // indirect
+	golang.org/x/sync v0.11.0 // indirect
+	golang.org/x/tools v0.23.0 // indirect
+)
+
+require (
+	github.com/VividCortex/ewma v1.2.0 // indirect
+	github.com/fatih/color v1.18.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-runewidth v0.0.16 // indirect
+	github.com/olekukonko/tablewriter v0.0.5
+	github.com/vishvananda/netns v0.0.5 // indirect
+	suah.dev/protect v1.2.4
 )

go.sum

@@ -1,22 +1,119 @@
-github.com/docker/libcontainer v2.2.1+incompatible h1:++SbbkCw+X8vAd4j2gOCzZ2Nn7s2xFALTf7LZKmM1/0=
-github.com/docker/libcontainer v2.2.1+incompatible/go.mod h1:osvj61pYsqhNCMLGX31xr7klUBhHb/ZBuXS0o1Fvwbw=
-github.com/gologme/log v0.0.0-20181207131047-4e5d8ccb38e8 h1:WD8iJ37bRNwvETMfVTusVSAi0WdXTpfNVGY2aHycNKY=
-github.com/gologme/log v0.0.0-20181207131047-4e5d8ccb38e8/go.mod h1:gq31gQ8wEHkR+WekdWsqDuf8pXTUZA9BnnzTuPz1Y9U=
-github.com/hjson/hjson-go v0.0.0-20181010104306-a25ecf6bd222 h1:xmvkbxXDeN1ffWq8kvrhyqVYAO2aXuRBsbpxVTR+JyU=
-github.com/hjson/hjson-go v0.0.0-20181010104306-a25ecf6bd222/go.mod h1:qsetwF8NlsTsOTwZTApNlTCerV+b2GjYRRcIk4JMFio=
-github.com/kardianos/minwinsvc v0.0.0-20151122163309-cad6b2b879b0 h1:YnZmFjg0Nvk8851WTVWlqMC1ecJH07Ctz+Ezxx4u54g=
-github.com/kardianos/minwinsvc v0.0.0-20151122163309-cad6b2b879b0/go.mod h1:rUi0/YffDo1oXBOGn1KRq7Fr07LX48XEBecQnmwjsAo=
-github.com/mitchellh/mapstructure v1.1.2 h1:fmNYVwqnSfB9mZU6OS2O6GsXM+wcskZDuKQzvN1EDeE=
-github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
-github.com/songgao/packets v0.0.0-20160404182456-549a10cd4091 h1:1zN6ImoqhSJhN8hGXFaJlSC8msLmIbX8bFqOfWLKw0w=
-github.com/songgao/packets v0.0.0-20160404182456-549a10cd4091/go.mod h1:N20Z5Y8oye9a7HmytmZ+tr8Q2vlP0tAHP13kTHzwvQY=
-github.com/yggdrasil-network/water v0.0.0-20180615095340-f732c88f34ae h1:MYCANF1kehCG6x6G+/9txLfq6n3lS5Vp0Mxn1hdiBAc=
-github.com/yggdrasil-network/water v0.0.0-20180615095340-f732c88f34ae/go.mod h1:R0SBCsugm+Sf1katgTb2t7GXMm+nRIv43tM4VDZbaOs=
-golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9 h1:mKdxBk7AujPs8kU4m80U72y/zjbZ3UcXC7dClwKbUI0=
-golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
-golang.org/x/net v0.0.0-20181207154023-610586996380 h1:zPQexyRtNYBc7bcHmehl1dH6TB3qn8zytv8cBGLDNY0=
-golang.org/x/net v0.0.0-20181207154023-610586996380/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/sys v0.0.0-20181206074257-70b957f3b65e h1:njOxP/wVblhCLIUhjHXf6X+dzTt5OQ3vMQo9mkOIKIo=
-golang.org/x/sys v0.0.0-20181206074257-70b957f3b65e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
-golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+github.com/Arceliar/ironwood v0.0.0-20241213013129-743fe2fccbd3 h1:d8N0z+udAnbU5PdjpLSNPTWlqeU/nnYsQ42B6+879aw=
+github.com/Arceliar/ironwood v0.0.0-20241213013129-743fe2fccbd3/go.mod h1:SrrElc3FFMpYCODSr11jWbLFeOM8WsY+DbDY/l2AXF0=
+github.com/Arceliar/phony v0.0.0-20220903101357-530938a4b13d h1:UK9fsWbWqwIQkMCz1CP+v5pGbsGoWAw6g4AyvMpm1EM=
+github.com/Arceliar/phony v0.0.0-20220903101357-530938a4b13d/go.mod h1:BCnxhRf47C/dy/e/D2pmB8NkB3dQVIrkD98b220rx5Q=
+github.com/VividCortex/ewma v1.2.0 h1:f58SaIzcDXrSy3kWaHNvuJgJ3Nmz59Zji6XoJR/q1ow=
+github.com/VividCortex/ewma v1.2.0/go.mod h1:nz4BbCtbLyFDeC9SUHbtcT5644juEuWfUAUnGx7j5l4=
+github.com/bits-and-blooms/bitset v1.10.0/go.mod h1:7hO7Gc7Pp1vODcmWvKMRA9BNmbv6a/7QIWpPxHddWR8=
+github.com/bits-and-blooms/bitset v1.13.0 h1:bAQ9OPNFYbGHV6Nez0tmNI0RiEu7/hxlYJRUA0wFAVE=
+github.com/bits-and-blooms/bitset v1.13.0/go.mod h1:7hO7Gc7Pp1vODcmWvKMRA9BNmbv6a/7QIWpPxHddWR8=
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+github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
+github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
+github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
+github.com/coder/websocket v1.8.12 h1:5bUXkEPPIbewrnkU8LTCLVaxi4N4J8ahufH2vlo4NAo=
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+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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misc/genkeys.go

@@ -1,131 +0,0 @@
-/*
-
-This file generates crypto keys.
-It prints out a new set of keys each time if finds a "better" one.
-By default, "better" means a higher NodeID (-> higher IP address).
-This is because the IP address format can compress leading 1s in the address, to incrase the number of ID bits in the address.
-
-If run with the "-sig" flag, it generates signing keys instead.
-A "better" signing key means one with a higher TreeID.
-This only matters if it's high enough to make you the root of the tree.
-
-*/
-package main
-
-import (
-	"encoding/hex"
-	"flag"
-	"fmt"
-	"net"
-	"runtime"
-
-	"github.com/yggdrasil-network/yggdrasil-go/src/address"
-	"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
-)
-
-var doSig = flag.Bool("sig", false, "generate new signing keys instead")
-
-type keySet struct {
-	priv []byte
-	pub  []byte
-	id   []byte
-	ip   string
-}
-
-func main() {
-	threads := runtime.GOMAXPROCS(0)
-	var threadChannels []chan []byte
-	var currentBest []byte
-	newKeys := make(chan keySet, threads)
-	flag.Parse()
-
-	for i := 0; i < threads; i++ {
-		threadChannels = append(threadChannels, make(chan []byte, threads))
-		switch {
-		case *doSig:
-			go doSigKeys(newKeys, threadChannels[i])
-		default:
-			go doBoxKeys(newKeys, threadChannels[i])
-		}
-	}
-
-	for {
-		newKey := <-newKeys
-		if isBetter(currentBest[:], newKey.id[:]) || len(currentBest) == 0 {
-			currentBest = newKey.id
-			for _, channel := range threadChannels {
-				select {
-				case channel <- newKey.id:
-				}
-			}
-			fmt.Println("--------------------------------------------------------------------------------")
-			switch {
-			case *doSig:
-				fmt.Println("sigPriv:", hex.EncodeToString(newKey.priv[:]))
-				fmt.Println("sigPub:", hex.EncodeToString(newKey.pub[:]))
-				fmt.Println("TreeID:", hex.EncodeToString(newKey.id[:]))
-			default:
-				fmt.Println("boxPriv:", hex.EncodeToString(newKey.priv[:]))
-				fmt.Println("boxPub:", hex.EncodeToString(newKey.pub[:]))
-				fmt.Println("NodeID:", hex.EncodeToString(newKey.id[:]))
-				fmt.Println("IP:", newKey.ip)
-			}
-		}
-	}
-}
-
-func isBetter(oldID, newID []byte) bool {
-	for idx := range oldID {
-		if newID[idx] > oldID[idx] {
-			return true
-		}
-		if newID[idx] < oldID[idx] {
-			return false
-		}
-	}
-	return false
-}
-
-func doBoxKeys(out chan<- keySet, in <-chan []byte) {
-	var bestID crypto.NodeID
-	for {
-		select {
-		case newBestID := <-in:
-			if isBetter(bestID[:], newBestID) {
-				copy(bestID[:], newBestID)
-			}
-		default:
-			pub, priv := crypto.NewBoxKeys()
-			id := crypto.GetNodeID(pub)
-			if !isBetter(bestID[:], id[:]) {
-				continue
-			}
-			bestID = *id
-			ip := net.IP(address.AddrForNodeID(id)[:]).String()
-			out <- keySet{priv[:], pub[:], id[:], ip}
-		}
-	}
-}
-
-func doSigKeys(out chan<- keySet, in <-chan []byte) {
-	var bestID crypto.TreeID
-	for idx := range bestID {
-		bestID[idx] = 0
-	}
-	for {
-		select {
-		case newBestID := <-in:
-			if isBetter(bestID[:], newBestID) {
-				copy(bestID[:], newBestID)
-			}
-		default:
-		}
-		pub, priv := crypto.NewSigKeys()
-		id := crypto.GetTreeID(pub)
-		if !isBetter(bestID[:], id[:]) {
-			continue
-		}
-		bestID = *id
-		out <- keySet{priv[:], pub[:], id[:], ""}
-	}
-}

misc/sim/merge.py

@@ -1,62 +0,0 @@
-import glob
-import sys
-inputDirPath =  sys.argv[1]
-
-inputFilePaths = glob.glob(inputDirPath+"/*")
-inputFilePaths.sort()
-
-merged = dict()
-
-stretches = []
-
-total = 0
-for inputFilePath in inputFilePaths:
-  print "Processing file {}".format(inputFilePath)
-  with open(inputFilePath, 'r') as f:
-    inData = f.readlines()
-  pathsChecked = 0.
-  avgStretch = 0.
-  for line in inData:
-    dat = line.rstrip('\n').split(' ')
-    eHops = int(dat[0])
-    nHops = int(dat[1])
-    count = int(dat[2])
-    if eHops not in merged: merged[eHops] = dict()
-    if nHops not in merged[eHops]: merged[eHops][nHops] = 0
-    merged[eHops][nHops] += count
-    total += count
-    pathsChecked += count
-    stretch = float(nHops)/eHops
-    avgStretch += stretch*count
-  finStretch = avgStretch / max(1, pathsChecked)
-  stretches.append(str(finStretch))
-
-hopsUsed = 0.
-hopsNeeded = 0.
-avgStretch = 0.
-results = []
-for eHops in sorted(merged.keys()):
-  for nHops in sorted(merged[eHops].keys()):
-    count = merged[eHops][nHops]
-    result = "{} {} {}".format(eHops, nHops, count)
-    results.append(result)
-    hopsUsed += nHops*count
-    hopsNeeded += eHops*count
-    stretch = float(nHops)/eHops
-    avgStretch += stretch*count
-    print result
-bandwidthUsage = hopsUsed/max(1, hopsNeeded)
-avgStretch /= max(1, total)
-
-with open("results.txt", "w") as f:
-  f.write('\n'.join(results))
-
-with open("stretches.txt", "w") as f:
-  f.write('\n'.join(stretches))
-
-print "Total files processed: {}".format(len(inputFilePaths))
-print "Total paths found: {}".format(total)
-print "Bandwidth usage: {}".format(bandwidthUsage)
-print "Average stretch: {}".format(avgStretch)
-
-

misc/sim/run-sim

@@ -1,2 +0,0 @@
-#!/bin/bash
-go run -tags debug misc/sim/treesim.go "$@"

misc/sim/treesim-forward.py

@@ -1,901 +0,0 @@
-# Tree routing scheme (named Yggdrasil, after the world tree from Norse mythology)
-# Steps:
-#   1: Pick any node, here I'm using highest nodeID
-#   2: Build spanning tree, each node stores path back to root
-#     Optionally with weights for each hop
-#     Ties broken by preferring a parent with higher degree
-#   3: Distance metric: self->peer + (via tree) peer->dest
-#   4: Perform (modified) greedy lookup via this metric for each direction (A->B and B->A)
-#   5: Source-route traffic using the better of those two paths
-
-# Note: This makes no attempt to simulate a dynamic network
-#   E.g. A node's peers cannot be disconnected
-
-# TODO:
-#   Make better use of drop?
-#   In particular, we should be ignoring *all* recently dropped *paths* to the root
-#     To minimize route flapping
-#     Not really an issue in the sim, but probably needed for a real network
-
-import array
-import gc
-import glob
-import gzip
-import heapq
-import os
-import random
-import time
-
-#############
-# Constants #
-#############
-
-# Reminder of where link cost comes in
-LINK_COST = 1
-
-# Timeout before dropping something, in simulated seconds
-TIMEOUT = 60
-
-###########
-# Classes #
-###########
-
-class PathInfo:
-  def __init__(self, nodeID):
-    self.nodeID = nodeID   # e.g. IP
-    self.coords = []       # Position in tree
-    self.tstamp = 0        # Timestamp from sender, to keep track of old vs new info
-    self.degree = 0        # Number of peers the sender has, used to break ties
-    # The above should be signed
-    self.path   = [nodeID] # Path to node (in path-vector route)
-    self.time   = 0        # Time info was updated, to keep track of e.g. timeouts
-    self.treeID = nodeID   # Hack, let tree use different ID than IP, used so we can dijkstra once and test many roots
-  def clone(self):
-    # Return a deep-enough copy of the path
-    clone = PathInfo(None)
-    clone.nodeID = self.nodeID
-    clone.coords = self.coords[:]
-    clone.tstamp = self.tstamp
-    clone.degree = self.degree
-    clone.path = self.path[:]
-    clone.time = self.time
-    clone.treeID = self.treeID
-    return clone
-# End class PathInfo
-
-class Node:
-  def __init__(self, nodeID):
-    self.info  = PathInfo(nodeID) # Self NodeInfo
-    self.root  = None             # PathInfo to node at root of tree
-    self.drop  = dict()           # PathInfo to nodes from clus that have timed out
-    self.peers = dict()           # PathInfo to peers
-    self.links = dict()           # Links to peers (to pass messages)
-    self.msgs  = []               # Said messages
-    self.table = dict()           # Pre-computed lookup table of peer info
-
-  def tick(self):
-    # Do periodic maintenance stuff, including push updates
-    self.info.time += 1
-    if self.info.time > self.info.tstamp + TIMEOUT/4:
-      # Update timestamp at least once every 1/4 timeout period
-      # This should probably be randomized in a real implementation
-      self.info.tstamp = self.info.time
-      self.info.degree = 0# TODO decide if degree should be used, len(self.peers)
-    changed = False # Used to track when the network has converged
-    changed |= self.cleanRoot()
-    self.cleanDropped()
-    # Should probably send messages infrequently if there's nothing new to report
-    if self.info.tstamp == self.info.time:
-      msg = self.createMessage()
-      self.sendMessage(msg)
-    return changed
-
-  def cleanRoot(self):
-    changed = False
-    if self.root and self.info.time - self.root.time > TIMEOUT:
-      print "DEBUG: clean root,", self.root.path
-      self.drop[self.root.treeID] = self.root
-      self.root = None
-      changed = True
-    if not self.root or self.root.treeID < self.info.treeID:
-      # No need to drop someone who'se worse than us
-      self.info.coords = [self.info.nodeID]
-      self.root = self.info.clone()
-      changed = True
-    elif self.root.treeID == self.info.treeID:
-      self.root = self.info.clone()
-    return changed
-
-  def cleanDropped(self):
-    # May actually be a treeID... better to iterate over keys explicitly
-    nodeIDs = sorted(self.drop.keys())
-    for nodeID in nodeIDs:
-      node = self.drop[nodeID]
-      if self.info.time - node.time > 4*TIMEOUT:
-        del self.drop[nodeID]
-    return None
-
-  def createMessage(self):
-    # Message is just a tuple
-    # First element is the sender
-    # Second element is the root
-    # We will .clone() everything during the send operation
-    msg = (self.info, self.root)
-    return msg
-
-  def sendMessage(self, msg):
-    for link in self.links.values():
-      newMsg = (msg[0].clone(), msg[1].clone())
-      link.msgs.append(newMsg)
-    return None
-
-  def handleMessages(self):
-    changed = False
-    while self.msgs:
-      changed |= self.handleMessage(self.msgs.pop())
-    return changed
-
-  def handleMessage(self, msg):
-    changed = False
-    for node in msg:
-      # Update the path and timestamp for the sender and root info
-      node.path.append(self.info.nodeID)
-      node.time = self.info.time
-    # Update the sender's info in our list of peers
-    sender = msg[0]
-    self.peers[sender.nodeID] = sender
-    # Decide if we want to update the root
-    root = msg[1]
-    updateRoot = False
-    isSameParent = False
-    isBetterParent = False
-    if len(self.root.path) > 1 and len(root.path) > 1:
-      parent = self.peers[self.root.path[-2]]
-      if parent.nodeID == sender.nodeID: isSameParent = True
-      if sender.degree > parent.degree:
-        # This would also be where you check path uptime/reliability/whatever
-        # All else being equal, we prefer parents with high degree
-        # We are trusting peers to report degree correctly in this case
-        # So expect some performance reduction if your peers aren't trustworthy
-        # (Lies can increase average stretch by a few %)
-        isBetterParent = True
-    if self.info.nodeID in root.path[:-1]: pass # No loopy routes allowed
-    elif root.treeID in self.drop and self.drop[root.treeID].tstamp >= root.tstamp: pass
-    elif not self.root: updateRoot = True
-    elif self.root.treeID < root.treeID: updateRoot = True
-    elif self.root.treeID != root.treeID: pass
-    elif self.root.tstamp > root.tstamp: pass
-    elif len(root.path) < len(self.root.path): updateRoot = True
-    elif isBetterParent and len(root.path) == len(self.root.path): updateRoot = True
-    elif isSameParent and self.root.tstamp < root.tstamp: updateRoot = True
-    if updateRoot:
-      if not self.root or self.root.path != root.path: changed = True
-      self.root = root
-      self.info.coords = self.root.path
-    return changed
-
-  def lookup(self, dest):
-    # Note: Can loop in an unconverged network
-    # The person looking up the route is responsible for checking for loops
-    best = None
-    bestDist = 0
-    for node in self.peers.itervalues():
-      # dist = distance to node + dist (on tree) from node to dest
-      dist = len(node.path)-1 + treeDist(node.coords, dest.coords)
-      if not best or dist < bestDist:
-        best = node
-        bestDist = dist
-    if best:
-      next = best.path[-2]
-      assert next in self.peers
-      return next
-    else:
-      # We failed to look something up
-      # TODO some way to signal this which doesn't crash
-      assert False
-
-  def initTable(self):
-    # Pre-computes a lookup table for destination coords
-    # Insert parent first so you prefer them as a next-hop
-    self.table.clear()
-    parent = self.info.nodeID
-    if len(self.info.coords) >= 2: parent = self.info.coords[-2]
-    for peer in self.peers.itervalues():
-      current = self.table
-      for coord in peer.coords:
-        if coord not in current: current[coord] = (peer.nodeID, dict())
-        old = current[coord]
-        next = old[1]
-        oldPeer = self.peers[old[0]]
-        oldDist = len(oldPeer.coords)
-        oldDeg = oldPeer.degree
-        newDist = len(peer.coords)
-        newDeg = peer.degree
-        # Prefer parent
-        # Else prefer short distance from root
-        # If equal distance, prefer high degree
-        if peer.nodeID == parent: current[coord] = (peer.nodeID, next)
-        elif newDist < oldDist: current[coord] = (peer.nodeID, next)
-        elif newDist == oldDist and newDeg > oldDeg: current[coord] = (peer.nodeID, next)
-        current = next
-    return None
-
-  def lookup_new(self, dest):
-    # Use pre-computed lookup table to look up next hop for dest coords
-    assert self.table
-    if len(self.info.coords) >= 2: parent = self.info.coords[-2]
-    else: parent = None
-    current = (parent, self.table)
-    c = None
-    for coord in dest.coords:
-      c = coord
-      if coord not in current[1]: break
-      current = current[1][coord]
-    next = current[0]
-    if c in self.peers: next = c
-    if next not in self.peers:
-      assert next == None
-      # You're the root of a different connected component
-      # You'd drop the packet in this case
-      # To make the path cache not die, need to return a valid next hop...
-      # Returning self for that reason
-      next = self.info.nodeID
-    return next
-# End class Node
-
-####################
-# Helper Functions #
-####################
-
-def getIndexOfLCA(source, dest):
-  # Return index of last common ancestor in source/dest coords
-  # -1 if no common ancestor (e.g. different roots)
-  lcaIdx = -1
-  minLen = min(len(source), len(dest))
-  for idx in xrange(minLen):
-    if source[idx] == dest[idx]: lcaIdx = idx
-    else: break
-  return lcaIdx
-
-def treePath(source, dest):
-  # Return path with source at head and dest at tail
-  lastMatch = getIndexOfLCA(source, dest)
-  path = dest[-1:lastMatch:-1] + source[lastMatch:]
-  assert path[0] == dest[-1]
-  assert path[-1] == source[-1]
-  return path
-
-def treeDist(source, dest):
-  dist = len(source) + len(dest)
-  lcaIdx = getIndexOfLCA(source, dest)
-  dist -= 2*(lcaIdx+1)
-  return dist
-
-def dijkstra(nodestore, startingNodeID):
-  # Idea to use heapq and basic implementation taken from stackexchange post
-  # http://codereview.stackexchange.com/questions/79025/dijkstras-algorithm-in-python
-  nodeIDs = sorted(nodestore.keys())
-  nNodes = len(nodeIDs)
-  idxs = dict()
-  for nodeIdx in xrange(nNodes):
-    nodeID = nodeIDs[nodeIdx]
-    idxs[nodeID] = nodeIdx
-  dists = array.array("H", [0]*nNodes)
-  queue = [(0, startingNodeID)]
-  while queue:
-    dist, nodeID = heapq.heappop(queue)
-    idx = idxs[nodeID]
-    if not dists[idx]: # Unvisited, otherwise we skip it
-      dists[idx] = dist
-      for peer in nodestore[nodeID].links:
-        if not dists[idxs[peer]]:
-          # Peer is also unvisited, so add to queue
-          heapq.heappush(queue, (dist+LINK_COST, peer))
-  return dists
-
-def dijkstrall(nodestore):
-  # Idea to use heapq and basic implementation taken from stackexchange post
-  # http://codereview.stackexchange.com/questions/79025/dijkstras-algorithm-in-python
-  nodeIDs = sorted(nodestore.keys())
-  nNodes = len(nodeIDs)
-  idxs = dict()
-  for nodeIdx in xrange(nNodes):
-    nodeID = nodeIDs[nodeIdx]
-    idxs[nodeID] = nodeIdx
-  dists = array.array("H", [0]*nNodes*nNodes) # use GetCacheIndex(nNodes, start, end)
-  for sourceIdx in xrange(nNodes):
-    print "Finding shortest paths for node {} / {} ({})".format(sourceIdx+1, nNodes, nodeIDs[sourceIdx])
-    queue = [(0, sourceIdx)]
-    while queue:
-      dist, nodeIdx = heapq.heappop(queue)
-      distIdx = getCacheIndex(nNodes, sourceIdx, nodeIdx)
-      if not dists[distIdx]: # Unvisited, otherwise we skip it
-        dists[distIdx] = dist
-        for peer in nodestore[nodeIDs[nodeIdx]].links:
-          pIdx = idxs[peer]
-          pdIdx = getCacheIndex(nNodes, sourceIdx, pIdx)
-          if not dists[pdIdx]:
-            # Peer is also unvisited, so add to queue
-            heapq.heappush(queue, (dist+LINK_COST, pIdx))
-  return dists
-
-def linkNodes(node1, node2):
-  node1.links[node2.info.nodeID] = node2
-  node2.links[node1.info.nodeID] = node1
-
-############################
-# Store topology functions #
-############################
-
-def makeStoreSquareGrid(sideLength, randomize=True):
-  # Simple grid in a sideLength*sideLength square
-  # Just used to validate that the code runs
-  store = dict()
-  nodeIDs = list(range(sideLength*sideLength))
-  if randomize: random.shuffle(nodeIDs)
-  for nodeID in nodeIDs:
-    store[nodeID] = Node(nodeID)
-  for index in xrange(len(nodeIDs)):
-    if (index % sideLength != 0): linkNodes(store[nodeIDs[index]], store[nodeIDs[index-1]])
-    if (index >= sideLength): linkNodes(store[nodeIDs[index]], store[nodeIDs[index-sideLength]])
-  print "Grid store created, size {}".format(len(store))
-  return store
-
-def makeStoreASRelGraph(pathToGraph):
-  #Existing network graphs, in caida.org's asrel format (ASx|ASy|z per line, z denotes relationship type)
-  with open(pathToGraph, "r") as f:
-    inData = f.readlines()
-  store = dict()
-  for line in inData:
-    if line.strip()[0] == "#": continue # Skip comment lines
-    line = line.replace('|'," ")
-    nodes = map(int, line.split()[0:2])
-    if nodes[0] not in store: store[nodes[0]] = Node(nodes[0])
-    if nodes[1] not in store: store[nodes[1]] = Node(nodes[1])
-    linkNodes(store[nodes[0]], store[nodes[1]])
-  print "CAIDA AS-relation graph successfully imported, size {}".format(len(store))
-  return store
-
-def makeStoreASRelGraphMaxDeg(pathToGraph, degIdx=0):
-  with open(pathToGraph, "r") as f:
-    inData = f.readlines()
-  store = dict()
-  nodeDeg = dict()
-  for line in inData:
-    if line.strip()[0] == "#": continue # Skip comment lines
-    line = line.replace('|'," ")
-    nodes = map(int, line.split()[0:2])
-    if nodes[0] not in nodeDeg: nodeDeg[nodes[0]] = 0
-    if nodes[1] not in nodeDeg: nodeDeg[nodes[1]] = 0
-    nodeDeg[nodes[0]] += 1
-    nodeDeg[nodes[1]] += 1
-  sortedNodes = sorted(nodeDeg.keys(), \
-                       key=lambda x: (nodeDeg[x], x), \
-                       reverse=True)
-  maxDegNodeID = sortedNodes[degIdx]
-  return makeStoreASRelGraphFixedRoot(pathToGraph, maxDegNodeID)
-
-def makeStoreASRelGraphFixedRoot(pathToGraph, rootNodeID):
-  with open(pathToGraph, "r") as f:
-    inData = f.readlines()
-  store = dict()
-  for line in inData:
-    if line.strip()[0] == "#": continue # Skip comment lines
-    line = line.replace('|'," ")
-    nodes = map(int, line.split()[0:2])
-    if nodes[0] not in store:
-      store[nodes[0]] = Node(nodes[0])
-      if nodes[0] == rootNodeID: store[nodes[0]].info.treeID += 1000000000
-    if nodes[1] not in store:
-      store[nodes[1]] = Node(nodes[1])
-      if nodes[1] == rootNodeID: store[nodes[1]].info.treeID += 1000000000
-    linkNodes(store[nodes[0]], store[nodes[1]])
-  print "CAIDA AS-relation graph successfully imported, size {}".format(len(store))
-  return store
-
-def makeStoreDimesEdges(pathToGraph, rootNodeID=None):
-  # Read from a DIMES csv-formatted graph from a gzip file
-  store = dict()
-  with gzip.open(pathToGraph, "r") as f:
-    inData = f.readlines()
-  size = len(inData)
-  index = 0
-  for edge in inData:
-    if not index % 1000:
-      pct = 100.0*index/size
-      print "Processing edge {}, {:.2f}%".format(index, pct)
-    index += 1
-    dat = edge.rstrip().split(',')
-    node1 = "N" + str(dat[0].strip())
-    node2 = "N" + str(dat[1].strip())
-    if '?' in node1 or '?' in node2: continue #Unknown node
-    if node1 == rootNodeID: node1 = "R" + str(dat[0].strip())
-    if node2 == rootNodeID: node2 = "R" + str(dat[1].strip())
-    if node1 not in store: store[node1] = Node(node1)
-    if node2 not in store: store[node2] = Node(node2)
-    if node1 != node2: linkNodes(store[node1], store[node2])
-  print "DIMES graph successfully imported, size {}".format(len(store))
-  return store
-
-def makeStoreGeneratedGraph(pathToGraph, root=None):
-  with open(pathToGraph, "r") as f:
-    inData = f.readlines()
-  store = dict()
-  for line in inData:
-    if line.strip()[0] == "#": continue # Skip comment lines
-    nodes = map(int, line.strip().split(' ')[0:2])
-    node1 = nodes[0]
-    node2 = nodes[1]
-    if node1 == root: node1 += 1000000
-    if node2 == root: node2 += 1000000
-    if node1 not in store: store[node1] = Node(node1)
-    if node2 not in store: store[node2] = Node(node2)
-    linkNodes(store[node1], store[node2])
-  print "Generated graph successfully imported, size {}".format(len(store))
-  return store
-
-
-############################################
-# Functions used as parts of network tests #
-############################################
-
-def idleUntilConverged(store):
-  nodeIDs = sorted(store.keys())
-  timeOfLastChange = 0
-  step = 0
-  # Idle until the network has converged
-  while step - timeOfLastChange < 4*TIMEOUT:
-    step += 1
-    print "Step: {}, last change: {}".format(step, timeOfLastChange)
-    changed = False
-    for nodeID in nodeIDs:
-      # Update node status, send messages
-      changed |= store[nodeID].tick()
-    for nodeID in nodeIDs:
-      # Process messages
-      changed |= store[nodeID].handleMessages()
-    if changed: timeOfLastChange = step
-  initTables(store)
-  return store
-
-def getCacheIndex(nodes, sourceIndex, destIndex):
-  return sourceIndex*nodes + destIndex
-
-def initTables(store):
-  nodeIDs = sorted(store.keys())
-  nNodes = len(nodeIDs)
-  print "Initializing routing tables for {} nodes".format(nNodes)
-  for idx in xrange(nNodes):
-    nodeID = nodeIDs[idx]
-    store[nodeID].initTable()
-  print "Routing tables initialized"
-  return None
-
-def getCache(store):
-  nodeIDs = sorted(store.keys())
-  nNodes = len(nodeIDs)
-  nodeIdxs = dict()
-  for nodeIdx in xrange(nNodes):
-    nodeIdxs[nodeIDs[nodeIdx]] = nodeIdx
-  cache = array.array("H", [0]*nNodes*nNodes)
-  for sourceIdx in xrange(nNodes):
-    sourceID = nodeIDs[sourceIdx]
-    print "Building fast lookup table for node {} / {} ({})".format(sourceIdx+1, nNodes, sourceID)
-    for destIdx in xrange(nNodes):
-      destID = nodeIDs[destIdx]
-      if sourceID == destID: nextHop = destID # lookup would fail
-      else: nextHop = store[sourceID].lookup(store[destID].info)
-      nextHopIdx = nodeIdxs[nextHop]
-      cache[getCacheIndex(nNodes, sourceIdx, destIdx)] = nextHopIdx
-  return cache
-
-def testPaths(store, dists):
-  cache = getCache(store)
-  nodeIDs = sorted(store.keys())
-  nNodes = len(nodeIDs)
-  idxs = dict()
-  for nodeIdx in xrange(nNodes):
-    nodeID = nodeIDs[nodeIdx]
-    idxs[nodeID] = nodeIdx
-  results = dict()
-  for sourceIdx in xrange(nNodes):
-    sourceID = nodeIDs[sourceIdx]
-    print "Testing paths from node {} / {} ({})".format(sourceIdx+1, len(nodeIDs), sourceID)
-    #dists = dijkstra(store, sourceID)
-    for destIdx in xrange(nNodes):
-      destID = nodeIDs[destIdx]
-      if destID == sourceID: continue # Skip self
-      distIdx = getCacheIndex(nNodes, sourceIdx, destIdx)
-      eHops = dists[distIdx]
-      if not eHops: continue # The network is split, no path exists
-      hops = 0
-      for pair in ((sourceIdx, destIdx),):
-        nHops = 0
-        locIdx = pair[0]
-        dIdx = pair[1]
-        while locIdx != dIdx:
-          locIdx = cache[getCacheIndex(nNodes, locIdx, dIdx)]
-          nHops += 1
-        if not hops or nHops < hops: hops = nHops
-      if eHops not in results: results[eHops] = dict()
-      if hops not in results[eHops]: results[eHops][hops] = 0
-      results[eHops][hops] += 1
-  return results
-
-def getAvgStretch(pathMatrix):
-  avgStretch = 0.
-  checked = 0.
-  for eHops in sorted(pathMatrix.keys()):
-    for nHops in sorted(pathMatrix[eHops].keys()):
-      count = pathMatrix[eHops][nHops]
-      stretch = float(nHops)/float(max(1, eHops))
-      avgStretch += stretch*count
-      checked += count
-  avgStretch /= max(1, checked)
-  return avgStretch
-
-def getMaxStretch(pathMatrix):
-  maxStretch = 0.
-  for eHops in sorted(pathMatrix.keys()):
-    for nHops in sorted(pathMatrix[eHops].keys()):
-      stretch = float(nHops)/float(max(1, eHops))
-      maxStretch = max(maxStretch, stretch)
-  return maxStretch
-
-def getCertSizes(store):
-  # Returns nCerts frequency distribution
-  # De-duplicates common certs (for shared prefixes in the path)
-  sizes = dict()
-  for node in store.values():
-    certs = set()
-    for peer in node.peers.values():
-      pCerts = set()
-      assert len(peer.path) == 2
-      assert peer.coords[-1] == peer.path[0]
-      hops = peer.coords + peer.path[1:]
-      for hopIdx in xrange(len(hops)-1):
-        send = hops[hopIdx]
-        if send == node.info.nodeID: continue # We created it, already have it
-        path = hops[0:hopIdx+2]
-        # Each cert is signed by the sender
-        # Includes information about the path from the sender to the next hop
-        # Next hop is at hopIdx+1, so the path to next hop is hops[0:hopIdx+2]
-        cert = "{}:{}".format(send, path)
-        certs.add(cert)
-    size = len(certs)
-    if size not in sizes: sizes[size] = 0
-    sizes[size] += 1
-  return sizes
-
-def getMinLinkCertSizes(store):
-  # Returns nCerts frequency distribution
-  # De-duplicates common certs (for shared prefixes in the path)
-  # Based on the minimum number of certs that must be traded through a particular link
-  # Handled per link
-  sizes = dict()
-  for node in store.values():
-    peerCerts = dict()
-    for peer in node.peers.values():
-      pCerts = set()
-      assert len(peer.path) == 2
-      assert peer.coords[-1] == peer.path[0]
-      hops = peer.coords + peer.path[1:]
-      for hopIdx in xrange(len(hops)-1):
-        send = hops[hopIdx]
-        if send == node.info.nodeID: continue # We created it, already have it
-        path = hops[0:hopIdx+2]
-        # Each cert is signed by the sender
-        # Includes information about the path from the sender to the next hop
-        # Next hop is at hopIdx+1, so the path to next hop is hops[0:hopIdx+2]
-        cert = "{}:{}".format(send, path)
-        pCerts.add(cert)
-      peerCerts[peer.nodeID] = pCerts
-    for peer in peerCerts:
-      size = 0
-      pCerts = peerCerts[peer]
-      for cert in pCerts:
-        required = True
-        for p2 in peerCerts:
-          if p2 == peer: continue
-          p2Certs = peerCerts[p2]
-          if cert in p2Certs: required = False
-        if required: size += 1
-      if size not in sizes: sizes[size] = 0
-      sizes[size] += 1
-  return sizes
-
-def getPathSizes(store):
-  # Returns frequency distribution of the total number of hops the routing table
-  # I.e. a node with 3 peers, each with 5 hop coord+path, would count as 3x5=15
-  sizes = dict()
-  for node in store.values():
-    size = 0
-    for peer in node.peers.values():
-      assert len(peer.path) == 2
-      assert peer.coords[-1] == peer.path[0]
-      peerSize = len(peer.coords) + len(peer.path) - 1 # double-counts peer, -1
-      size += peerSize
-    if size not in sizes: sizes[size] = 0
-    sizes[size] += 1
-  return sizes
-
-def getPeerSizes(store):
-  # Returns frequency distribution of the number of peers each node has
-  sizes = dict()
-  for node in store.values():
-    nPeers = len(node.peers)
-    if nPeers not in sizes: sizes[nPeers] = 0
-    sizes[nPeers] += 1
-  return sizes
-
-def getAvgSize(sizes):
-  sumSizes = 0
-  nNodes = 0
-  for size in sizes:
-    count = sizes[size]
-    sumSizes += size*count
-    nNodes += count
-  avgSize = float(sumSizes)/max(1, nNodes)
-  return avgSize
-
-def getMaxSize(sizes):
-  return max(sizes.keys())
-
-def getMinSize(sizes):
-  return min(sizes.keys())
-
-def getResults(pathMatrix):
-  results = []
-  for eHops in sorted(pathMatrix.keys()):
-    for nHops in sorted(pathMatrix[eHops].keys()):
-      count = pathMatrix[eHops][nHops]
-      results.append("{} {} {}".format(eHops, nHops, count))
-  return '\n'.join(results)
-
-####################################
-# Functions to run different tests #
-####################################
-
-def runTest(store):
-  # Runs the usual set of tests on the store
-  # Does not save results, so only meant for quick tests
-  # To e.g. check the code works, maybe warm up the pypy jit
-  for node in store.values():
-    node.info.time = random.randint(0, TIMEOUT)
-    node.info.tstamp = TIMEOUT
-  print "Begin testing network"
-  dists = None
-  if not dists: dists = dijkstrall(store)
-  idleUntilConverged(store)
-  pathMatrix = testPaths(store, dists)
-  avgStretch = getAvgStretch(pathMatrix)
-  maxStretch = getMaxStretch(pathMatrix)
-  peers = getPeerSizes(store)
-  certs = getCertSizes(store)
-  paths = getPathSizes(store)
-  linkCerts = getMinLinkCertSizes(store)
-  avgPeerSize = getAvgSize(peers)
-  maxPeerSize = getMaxSize(peers)
-  avgCertSize = getAvgSize(certs)
-  maxCertSize = getMaxSize(certs)
-  avgPathSize = getAvgSize(paths)
-  maxPathSize = getMaxSize(paths)
-  avgLinkCert = getAvgSize(linkCerts)
-  maxLinkCert = getMaxSize(linkCerts)
-  totalCerts = sum(map(lambda x: x*certs[x], certs.keys()))
-  totalLinks = sum(map(lambda x: x*peers[x], peers.keys())) # one-way links
-  avgCertsPerLink = float(totalCerts)/max(1, totalLinks)
-  print "Finished testing network"
-  print "Avg / Max stretch: {} / {}".format(avgStretch, maxStretch)
-  print "Avg / Max nPeers size: {} / {}".format(avgPeerSize, maxPeerSize)
-  print "Avg / Max nCerts size: {} / {}".format(avgCertSize, maxCertSize)
-  print "Avg / Max total hops in any node's routing table: {} / {}".format(avgPathSize, maxPathSize)
-  print "Avg / Max lower bound cert requests per link (one-way): {} / {}".format(avgLinkCert, maxLinkCert)
-  print "Avg certs per link (one-way): {}".format(avgCertsPerLink)
-  return # End of function
-
-def rootNodeASTest(path, outDir="output-treesim-AS", dists=None, proc = 1):
-  # Checks performance for every possible choice of root node
-  # Saves output for each root node to a separate file on disk
-  # path = input path to some caida.org formatted AS-relationship graph
-  if not os.path.exists(outDir): os.makedirs(outDir)
-  assert os.path.exists(outDir)
-  store = makeStoreASRelGraph(path)
-  nodes = sorted(store.keys())
-  for nodeIdx in xrange(len(nodes)):
-    if nodeIdx % proc != 0: continue # Work belongs to someone else
-    rootNodeID = nodes[nodeIdx]
-    outpath = outDir+"/{}".format(rootNodeID)
-    if os.path.exists(outpath):
-      print "Skipping {}, already processed".format(rootNodeID)
-      continue
-    store = makeStoreASRelGraphFixedRoot(path, rootNodeID)
-    for node in store.values():
-      node.info.time = random.randint(0, TIMEOUT)
-      node.info.tstamp = TIMEOUT
-    print "Beginning {}, size {}".format(nodeIdx, len(store))
-    if not dists: dists = dijkstrall(store)
-    idleUntilConverged(store)
-    pathMatrix = testPaths(store, dists)
-    avgStretch = getAvgStretch(pathMatrix)
-    maxStretch = getMaxStretch(pathMatrix)
-    results = getResults(pathMatrix)
-    with open(outpath, "w") as f:
-      f.write(results)
-    print "Finished test for root AS {} ({} / {})".format(rootNodeID, nodeIdx+1, len(store))
-    print "Avg / Max stretch: {} / {}".format(avgStretch, maxStretch)
-    #break # Stop after 1, because they can take forever
-  return # End of function
-
-def timelineASTest():
-  # Meant to study the performance of the network as a function of network size
-  # Loops over a set of AS-relationship graphs
-  # Runs a test on each graph, selecting highest-degree node as the root
-  # Saves results for each graph to a separate file on disk
-  outDir = "output-treesim-timeline-AS"
-  if not os.path.exists(outDir): os.makedirs(outDir)
-  assert os.path.exists(outDir)
-  paths = sorted(glob.glob("asrel/datasets/*"))
-  for path in paths:
-    date = os.path.basename(path).split(".")[0]
-    outpath = outDir+"/{}".format(date)
-    if os.path.exists(outpath):
-      print "Skipping {}, already processed".format(date)
-      continue
-    store = makeStoreASRelGraphMaxDeg(path)
-    dists = None
-    for node in store.values():
-      node.info.time = random.randint(0, TIMEOUT)
-      node.info.tstamp = TIMEOUT
-    print "Beginning {}, size {}".format(date, len(store))
-    if not dists: dists = dijkstrall(store)
-    idleUntilConverged(store)
-    pathMatrix = testPaths(store, dists)
-    avgStretch = getAvgStretch(pathMatrix)
-    maxStretch = getMaxStretch(pathMatrix)
-    results = getResults(pathMatrix)
-    with open(outpath, "w") as f:
-      f.write(results)
-    print "Finished {} with {} nodes".format(date, len(store))
-    print "Avg / Max stretch: {} / {}".format(avgStretch, maxStretch)
-    #break # Stop after 1, because they can take forever
-  return # End of function
-
-def timelineDimesTest():
-  # Meant to study the performance of the network as a function of network size
-  # Loops over a set of AS-relationship graphs
-  # Runs a test on each graph, selecting highest-degree node as the root
-  # Saves results for each graph to a separate file on disk
-  outDir = "output-treesim-timeline-dimes"
-  if not os.path.exists(outDir): os.makedirs(outDir)
-  assert os.path.exists(outDir)
-  # Input files are named ASEdgesX_Y where X = month (no leading 0), Y = year
-  paths = sorted(glob.glob("DIMES/ASEdges/*.gz"))
-  exists = set(glob.glob(outDir+"/*"))
-  for path in paths:
-    date = os.path.basename(path).split(".")[0]
-    outpath = outDir+"/{}".format(date)
-    if outpath in exists:
-      print "Skipping {}, already processed".format(date)
-      continue
-    store = makeStoreDimesEdges(path)
-    # Get the highest degree node and make it root
-    # Sorted by nodeID just to make it stable in the event of a tie
-    nodeIDs = sorted(store.keys())
-    bestRoot = ""
-    bestDeg = 0
-    for nodeID in nodeIDs:
-      node = store[nodeID]
-      if len(node.links) > bestDeg:
-        bestRoot = nodeID
-        bestDeg = len(node.links)
-    assert bestRoot
-    store = makeStoreDimesEdges(path, bestRoot)
-    rootID = "R" + bestRoot[1:]
-    assert rootID in store
-    # Don't forget to set random seed before setitng times
-    # To make results reproducible
-    nodeIDs = sorted(store.keys())
-    random.seed(12345)
-    for nodeID in nodeIDs:
-      node = store[nodeID]
-      node.info.time = random.randint(0, TIMEOUT)
-      node.info.tstamp = TIMEOUT
-    print "Beginning {}, size {}".format(date, len(store))
-    if not dists: dists = dijkstrall(store)
-    idleUntilConverged(store)
-    pathMatrix = testPaths(store, dists)
-    avgStretch = getAvgStretch(pathMatrix)
-    maxStretch = getMaxStretch(pathMatrix)
-    results = getResults(pathMatrix)
-    with open(outpath, "w") as f:
-      f.write(results)
-    print "Finished {} with {} nodes".format(date, len(store))
-    print "Avg / Max stretch: {} / {}".format(avgStretch, maxStretch)
-    break # Stop after 1, because they can take forever
-  return # End of function
-
-def scalingTest(maxTests=None, inputDir="graphs"):
-  # Meant to study the performance of the network as a function of network size
-  # Loops over a set of nodes in a previously generated graph
-  # Runs a test on each graph, testing each node as the root
-  # if maxTests is set, tests only that number of roots (highest degree first)
-  # Saves results for each graph to a separate file on disk
-  outDir = "output-treesim-{}".format(inputDir)
-  if not os.path.exists(outDir): os.makedirs(outDir)
-  assert os.path.exists(outDir)
-  paths = sorted(glob.glob("{}/*".format(inputDir)))
-  exists = set(glob.glob(outDir+"/*"))
-  for path in paths:
-    gc.collect() # pypy waits for gc to close files
-    graph = os.path.basename(path).split(".")[0]
-    store = makeStoreGeneratedGraph(path)
-    # Get the highest degree node and make it root
-    # Sorted by nodeID just to make it stable in the event of a tie
-    nodeIDs = sorted(store.keys(), key=lambda x: len(store[x].links), reverse=True)
-    dists = None
-    if maxTests: nodeIDs = nodeIDs[:maxTests]
-    for nodeID in nodeIDs:
-      nodeIDStr = str(nodeID).zfill(len(str(len(store)-1)))
-      outpath = outDir+"/{}-{}".format(graph, nodeIDStr)
-      if outpath in exists:
-        print "Skipping {}-{}, already processed".format(graph, nodeIDStr)
-        continue
-      store = makeStoreGeneratedGraph(path, nodeID)
-      # Don't forget to set random seed before setting times
-      random.seed(12345) # To make results reproducible
-      nIDs = sorted(store.keys())
-      for nID in nIDs:
-        node = store[nID]
-        node.info.time = random.randint(0, TIMEOUT)
-        node.info.tstamp = TIMEOUT
-      print "Beginning {}, size {}".format(graph, len(store))
-      if not dists: dists = dijkstrall(store)
-      idleUntilConverged(store)
-      pathMatrix = testPaths(store, dists)
-      avgStretch = getAvgStretch(pathMatrix)
-      maxStretch = getMaxStretch(pathMatrix)
-      results = getResults(pathMatrix)
-      with open(outpath, "w") as f:
-        f.write(results)
-      print "Finished {} with {} nodes for root {}".format(graph, len(store), nodeID)
-      print "Avg / Max stretch: {} / {}".format(avgStretch, maxStretch)
-  return # End of function
-
-##################
-# Main Execution #
-##################
-
-if __name__ == "__main__":
-  if True: # Run a quick test
-    random.seed(12345) # DEBUG
-    store = makeStoreSquareGrid(4)
-    runTest(store) # Quick test
-  store = None
-  # Do some real work
-  #runTest(makeStoreDimesEdges("DIMES/ASEdges/ASEdges1_2007.csv.gz"))
-  #timelineDimesTest()
-  #rootNodeASTest("asrel/datasets/19980101.as-rel.txt")
-  #timelineASTest()
-  #rootNodeASTest("hype-2016-09-19.list", "output-treesim-hype")
-  #scalingTest(None, "graphs-20") # First argument 1 to only test 1 root per graph
-  #store = makeStoreGeneratedGraph("bgp_tables")
-  #store = makeStoreGeneratedGraph("skitter")
-  #store = makeStoreASRelGraphMaxDeg("hype-2016-09-19.list") #http://hia.cjdns.ca/watchlist/c/walk.peers.20160919
-  #store = makeStoreGeneratedGraph("fc00-2017-08-12.txt")
-  if store: runTest(store)
-  #rootNodeASTest("skitter", "output-treesim-skitter", None, 0, 1)
-  #scalingTest(1, "graphs-20") # First argument 1 to only test 1 root per graph
-  #scalingTest(1, "graphs-21") # First argument 1 to only test 1 root per graph
-  #scalingTest(1, "graphs-22") # First argument 1 to only test 1 root per graph
-  #scalingTest(1, "graphs-23") # First argument 1 to only test 1 root per graph
-  if not store:
-    import sys
-    args = sys.argv
-    if len(args) == 2:
-      job_number = int(sys.argv[1])
-      rootNodeASTest("fc00-2017-08-12.txt", "fc00", None, job_number)
-    else:
-      print "Usage: {} job_number".format(args[0])
-      print "job_number = which job set to run on this node (1-indexed)"
-

misc/sim/treesim.go

@@ -1,455 +0,0 @@
-package main
-
-import "fmt"
-import "bufio"
-import "os"
-import "strings"
-import "strconv"
-import "time"
-
-import "runtime"
-import "runtime/pprof"
-import "flag"
-
-import "github.com/gologme/log"
-
-import . "github.com/yggdrasil-network/yggdrasil-go/src/yggdrasil"
-import . "github.com/yggdrasil-network/yggdrasil-go/src/crypto"
-
-////////////////////////////////////////////////////////////////////////////////
-
-type Node struct {
-	index int
-	core  Core
-	send  chan<- []byte
-	recv  <-chan []byte
-}
-
-func (n *Node) init(index int) {
-	n.index = index
-	n.core.Init()
-	n.send = n.core.DEBUG_getSend()
-	n.recv = n.core.DEBUG_getRecv()
-	n.core.DEBUG_simFixMTU()
-}
-
-func (n *Node) printTraffic() {
-	for {
-		packet := <-n.recv
-		fmt.Println(n.index, packet)
-		//panic("Got a packet")
-	}
-}
-
-func (n *Node) startPeers() {
-	//for _, p := range n.core.Peers.Ports {
-	//  go p.MainLoop()
-	//}
-	//go n.printTraffic()
-	//n.core.Peers.DEBUG_startPeers()
-}
-
-func linkNodes(m, n *Node) {
-	// Don't allow duplicates
-	if m.core.DEBUG_getPeers().DEBUG_hasPeer(n.core.DEBUG_getSigningPublicKey()) {
-		return
-	}
-	// Create peers
-	// Buffering reduces packet loss in the sim
-	//  This slightly speeds up testing (fewer delays before retrying a ping)
-	pLinkPub, pLinkPriv := m.core.DEBUG_newBoxKeys()
-	qLinkPub, qLinkPriv := m.core.DEBUG_newBoxKeys()
-	p := m.core.DEBUG_getPeers().DEBUG_newPeer(n.core.DEBUG_getEncryptionPublicKey(),
-		n.core.DEBUG_getSigningPublicKey(), *m.core.DEBUG_getSharedKey(pLinkPriv, qLinkPub))
-	q := n.core.DEBUG_getPeers().DEBUG_newPeer(m.core.DEBUG_getEncryptionPublicKey(),
-		m.core.DEBUG_getSigningPublicKey(), *n.core.DEBUG_getSharedKey(qLinkPriv, pLinkPub))
-	DEBUG_simLinkPeers(p, q)
-	return
-}
-
-func makeStoreSquareGrid(sideLength int) map[int]*Node {
-	store := make(map[int]*Node)
-	nNodes := sideLength * sideLength
-	idxs := make([]int, 0, nNodes)
-	// TODO shuffle nodeIDs
-	for idx := 1; idx <= nNodes; idx++ {
-		idxs = append(idxs, idx)
-	}
-	for _, idx := range idxs {
-		node := &Node{}
-		node.init(idx)
-		store[idx] = node
-	}
-	for idx := 0; idx < nNodes; idx++ {
-		if (idx % sideLength) != 0 {
-			linkNodes(store[idxs[idx]], store[idxs[idx-1]])
-		}
-		if idx >= sideLength {
-			linkNodes(store[idxs[idx]], store[idxs[idx-sideLength]])
-		}
-	}
-	//for _, node := range store { node.initPorts() }
-	return store
-}
-
-func makeStoreStar(nNodes int) map[int]*Node {
-	store := make(map[int]*Node)
-	center := &Node{}
-	center.init(0)
-	store[0] = center
-	for idx := 1; idx < nNodes; idx++ {
-		node := &Node{}
-		node.init(idx)
-		store[idx] = node
-		linkNodes(center, node)
-	}
-	return store
-}
-
-func loadGraph(path string) map[int]*Node {
-	f, err := os.Open(path)
-	if err != nil {
-		panic(err)
-	}
-	defer f.Close()
-	store := make(map[int]*Node)
-	s := bufio.NewScanner(f)
-	for s.Scan() {
-		line := s.Text()
-		nodeIdxstrs := strings.Split(line, " ")
-		nodeIdx0, _ := strconv.Atoi(nodeIdxstrs[0])
-		nodeIdx1, _ := strconv.Atoi(nodeIdxstrs[1])
-		if store[nodeIdx0] == nil {
-			node := &Node{}
-			node.init(nodeIdx0)
-			store[nodeIdx0] = node
-		}
-		if store[nodeIdx1] == nil {
-			node := &Node{}
-			node.init(nodeIdx1)
-			store[nodeIdx1] = node
-		}
-		linkNodes(store[nodeIdx0], store[nodeIdx1])
-	}
-	//for _, node := range store { node.initPorts() }
-	return store
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-func startNetwork(store map[[32]byte]*Node) {
-	for _, node := range store {
-		node.startPeers()
-	}
-}
-
-func getKeyedStore(store map[int]*Node) map[[32]byte]*Node {
-	newStore := make(map[[32]byte]*Node)
-	for _, node := range store {
-		newStore[node.core.DEBUG_getSigningPublicKey()] = node
-	}
-	return newStore
-}
-
-func testPaths(store map[[32]byte]*Node) bool {
-	nNodes := len(store)
-	count := 0
-	for _, source := range store {
-		count++
-		fmt.Printf("Testing paths from node %d / %d (%d)\n", count, nNodes, source.index)
-		for _, dest := range store {
-			//if source == dest { continue }
-			destLoc := dest.core.DEBUG_getLocator()
-			coords := destLoc.DEBUG_getCoords()
-			temp := 0
-			ttl := ^uint64(0)
-			oldTTL := ttl
-			for here := source; here != dest; {
-				temp++
-				if temp > 4096 {
-					fmt.Println("Loop?")
-					time.Sleep(time.Second)
-					return false
-				}
-				nextPort := here.core.DEBUG_switchLookup(coords)
-				// First check if "here" is accepting packets from the previous node
-				// TODO explain how this works
-				ports := here.core.DEBUG_getPeers().DEBUG_getPorts()
-				nextPeer := ports[nextPort]
-				if nextPeer == nil {
-					fmt.Println("Peer associated with next port is nil")
-					return false
-				}
-				next := store[nextPeer.DEBUG_getSigKey()]
-				/*
-				   if next == here {
-				     //for idx, link := range here.links {
-				     //  fmt.Println("DUMP:", idx, link.nodeID)
-				     //}
-				     if nextPort != 0 { panic("This should not be") }
-				     fmt.Println("Failed to route:", source.index, here.index, dest.index, oldTTL, ttl)
-				     //here.table.DEBUG_dumpTable()
-				     //fmt.Println("Ports:", here.nodeID, here.ports)
-				     return false
-				     panic(fmt.Sprintln("Routing Loop:",
-				                        source.index,
-				                        here.index,
-				                        dest.index))
-				   }
-				*/
-				if temp > 4090 {
-					fmt.Println("DEBUG:",
-						source.index, source.core.DEBUG_getLocator(),
-						here.index, here.core.DEBUG_getLocator(),
-						dest.index, dest.core.DEBUG_getLocator())
-					//here.core.DEBUG_getSwitchTable().DEBUG_dumpTable()
-				}
-				if here != source {
-					// This is sufficient to check for routing loops or blackholes
-					//break
-				}
-				if here == next {
-					fmt.Println("Drop:", source.index, here.index, dest.index, oldTTL)
-					return false
-				}
-				here = next
-			}
-		}
-	}
-	return true
-}
-
-func stressTest(store map[[32]byte]*Node) {
-	fmt.Println("Stress testing network...")
-	nNodes := len(store)
-	dests := make([][]byte, 0, nNodes)
-	for _, dest := range store {
-		loc := dest.core.DEBUG_getLocator()
-		coords := loc.DEBUG_getCoords()
-		dests = append(dests, coords)
-	}
-	lookups := 0
-	start := time.Now()
-	for _, source := range store {
-		for _, coords := range dests {
-			source.core.DEBUG_switchLookup(coords)
-			lookups++
-		}
-	}
-	timed := time.Since(start)
-	fmt.Printf("%d lookups in %s (%f lookups per second)\n",
-		lookups,
-		timed,
-		float64(lookups)/timed.Seconds())
-}
-
-func pingNodes(store map[[32]byte]*Node) {
-	fmt.Println("Sending pings...")
-	nNodes := len(store)
-	count := 0
-	equiv := func(a []byte, b []byte) bool {
-		if len(a) != len(b) {
-			return false
-		}
-		for idx := 0; idx < len(a); idx++ {
-			if a[idx] != b[idx] {
-				return false
-			}
-		}
-		return true
-	}
-	for _, source := range store {
-		count++
-		//if count > 16 { break }
-		fmt.Printf("Sending packets from node %d/%d (%d)\n", count, nNodes, source.index)
-		sourceKey := source.core.DEBUG_getEncryptionPublicKey()
-		payload := sourceKey[:]
-		sourceAddr := source.core.DEBUG_getAddr()[:]
-		sendTo := func(bs []byte, destAddr []byte) {
-			packet := make([]byte, 40+len(bs))
-			copy(packet[8:24], sourceAddr)
-			copy(packet[24:40], destAddr)
-			copy(packet[40:], bs)
-			packet[0] = 6 << 4
-			source.send <- packet
-		}
-		destCount := 0
-		for _, dest := range store {
-			destCount += 1
-			fmt.Printf("%d Nodes, %d Send, %d Recv\n", nNodes, count, destCount)
-			if dest == source {
-				fmt.Println("Skipping self")
-				continue
-			}
-			destAddr := dest.core.DEBUG_getAddr()[:]
-			ticker := time.NewTicker(150 * time.Millisecond)
-			sendTo(payload, destAddr)
-			for loop := true; loop; {
-				select {
-				case packet := <-dest.recv:
-					{
-						if equiv(payload, packet[len(packet)-len(payload):]) {
-							loop = false
-						}
-					}
-				case <-ticker.C:
-					sendTo(payload, destAddr)
-					//dumpDHTSize(store) // note that this uses racey functions to read things...
-				}
-			}
-			ticker.Stop()
-		}
-		//break // Only try sending pings from 1 node
-		// This is because, for some reason, stopTun() doesn't always close it
-		// And if two tuns are up, bad things happen (sends via wrong interface)
-	}
-	fmt.Println("Finished pinging nodes")
-}
-
-func pingBench(store map[[32]byte]*Node) {
-	fmt.Println("Benchmarking pings...")
-	nPings := 0
-	payload := make([]byte, 1280+40) // MTU + ipv6 header
-	var timed time.Duration
-	//nNodes := len(store)
-	count := 0
-	for _, source := range store {
-		count++
-		//fmt.Printf("Sending packets from node %d/%d (%d)\n", count, nNodes, source.index)
-		getPing := func(key [32]byte, decodedCoords []byte) []byte {
-			// TODO write some function to do this the right way, put... somewhere...
-			coords := DEBUG_wire_encode_coords(decodedCoords)
-			packet := make([]byte, 0, len(key)+len(coords)+len(payload))
-			packet = append(packet, key[:]...)
-			packet = append(packet, coords...)
-			packet = append(packet, payload[:]...)
-			return packet
-		}
-		for _, dest := range store {
-			key := dest.core.DEBUG_getEncryptionPublicKey()
-			loc := dest.core.DEBUG_getLocator()
-			coords := loc.DEBUG_getCoords()
-			ping := getPing(key, coords)
-			// TODO make sure the session is open first
-			start := time.Now()
-			for i := 0; i < 1000000; i++ {
-				source.send <- ping
-				nPings++
-			}
-			timed += time.Since(start)
-			break
-		}
-		break
-	}
-	fmt.Printf("Sent %d pings in %s (%f per second)\n",
-		nPings,
-		timed,
-		float64(nPings)/timed.Seconds())
-}
-
-func dumpStore(store map[NodeID]*Node) {
-	for _, node := range store {
-		fmt.Println("DUMPSTORE:", node.index, node.core.DEBUG_getLocator())
-		node.core.DEBUG_getSwitchTable().DEBUG_dumpTable()
-	}
-}
-
-func dumpDHTSize(store map[[32]byte]*Node) {
-	var min, max, sum int
-	for _, node := range store {
-		num := node.core.DEBUG_getDHTSize()
-		min = num
-		max = num
-		break
-	}
-	for _, node := range store {
-		num := node.core.DEBUG_getDHTSize()
-		if num < min {
-			min = num
-		}
-		if num > max {
-			max = num
-		}
-		sum += num
-	}
-	avg := float64(sum) / float64(len(store))
-	fmt.Printf("DHT min %d / avg %f / max %d\n", min, avg, max)
-}
-
-func (n *Node) startTCP(listen string) {
-	n.core.DEBUG_setupAndStartGlobalTCPInterface(listen)
-}
-
-func (n *Node) connectTCP(remoteAddr string) {
-	n.core.AddPeer(remoteAddr, remoteAddr)
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-var cpuprofile = flag.String("cpuprofile", "", "write cpu profile `file`")
-var memprofile = flag.String("memprofile", "", "write memory profile to this file")
-
-func main() {
-	flag.Parse()
-	if *cpuprofile != "" {
-		f, err := os.Create(*cpuprofile)
-		if err != nil {
-			panic(fmt.Sprintf("could not create CPU profile: ", err))
-		}
-		if err := pprof.StartCPUProfile(f); err != nil {
-			panic(fmt.Sprintf("could not start CPU profile: ", err))
-		}
-		defer pprof.StopCPUProfile()
-	}
-	if *memprofile != "" {
-		f, err := os.Create(*memprofile)
-		if err != nil {
-			panic(fmt.Sprintf("could not create memory profile: ", err))
-		}
-		defer func() { pprof.WriteHeapProfile(f); f.Close() }()
-	}
-	fmt.Println("Test")
-	Util_testAddrIDMask()
-	idxstore := makeStoreSquareGrid(4)
-	//idxstore := makeStoreStar(256)
-	//idxstore := loadGraph("misc/sim/hype-2016-09-19.list")
-	//idxstore := loadGraph("misc/sim/fc00-2017-08-12.txt")
-	//idxstore := loadGraph("skitter")
-	kstore := getKeyedStore(idxstore)
-	//*
-	logger := log.New(os.Stderr, "", log.Flags())
-	for _, n := range kstore {
-		n.core.DEBUG_setLogger(logger)
-	}
-	//*/
-	startNetwork(kstore)
-	//time.Sleep(10*time.Second)
-	// Note that testPaths only works if pressure is turend off
-	//  Otherwise congestion can lead to routing loops?
-	for finished := false; !finished; {
-		finished = testPaths(kstore)
-	}
-	pingNodes(kstore)
-	//pingBench(kstore) // Only after disabling debug output
-	//stressTest(kstore)
-	//time.Sleep(120 * time.Second)
-	dumpDHTSize(kstore) // note that this uses racey functions to read things...
-	if false {
-		// This connects the sim to the local network
-		for _, node := range kstore {
-			node.startTCP("localhost:0")
-			node.connectTCP("localhost:12345")
-			break // just 1
-		}
-		for _, node := range kstore {
-			go func() {
-				// Just dump any packets sent to this node
-				for range node.recv {
-				}
-			}()
-		}
-		var block chan struct{}
-		<-block
-	}
-	runtime.GC()
-}

src/address/address.go

@@ -1,22 +1,26 @@
+// Package address contains the types used by yggdrasil to represent IPv6 addresses or prefixes, as well as functions for working with these types.
+// Of particular importance are the functions used to derive addresses or subnets from a NodeID, or to get the NodeID and bitmask of the bits visible from an address, which is needed for DHT searches.
 package address
 
-import "github.com/yggdrasil-network/yggdrasil-go/src/crypto"
+import (
+	"crypto/ed25519"
+)
 
-// address represents an IPv6 address in the yggdrasil address range.
+// Address represents an IPv6 address in the yggdrasil address range.
 type Address [16]byte
 
-// subnet represents an IPv6 /64 subnet in the yggdrasil subnet range.
+// Subnet represents an IPv6 /64 subnet in the yggdrasil subnet range.
 type Subnet [8]byte
 
-// address_prefix is the prefix used for all addresses and subnets in the network.
-// The current implementation requires this to be a muliple of 8 bits + 7 bits.
+// GetPrefix returns the address prefix used by yggdrasil.
+// The current implementation requires this to be a multiple of 8 bits + 7 bits.
 // The 8th bit of the last byte is used to signal nodes (0) or /64 prefixes (1).
-// Nodes that configure this differently will be unable to communicate with eachother, though routing and the DHT machinery *should* still work.
+// Nodes that configure this differently will be unable to communicate with each other using IP packets, though routing and the DHT machinery *should* still work.
 func GetPrefix() [1]byte {
 	return [...]byte{0x02}
 }
 
-// isValid returns true if an address falls within the range used by nodes in the network.
+// IsValid returns true if an address falls within the range used by nodes in the network.
 func (a *Address) IsValid() bool {
 	prefix := GetPrefix()
 	for idx := range prefix {
@@ -27,7 +31,7 @@ func (a *Address) IsValid() bool {
 	return true
 }
 
-// isValid returns true if a prefix falls within the range usable by the network.
+// IsValid returns true if a prefix falls within the range usable by the network.
 func (s *Subnet) IsValid() bool {
 	prefix := GetPrefix()
 	l := len(prefix)
@@ -39,25 +43,34 @@ func (s *Subnet) IsValid() bool {
 	return (*s)[l-1] == prefix[l-1]|0x01
 }
 
-// address_addrForNodeID takes a *NodeID as an argument and returns an *address.
-// This subnet begins with the address prefix, with the last bit set to 0 to indicate an address.
-// The following 8 bits are set to the number of leading 1 bits in the NodeID.
-// The NodeID, excluding the leading 1 bits and the first leading 0 bit, is truncated to the appropriate length and makes up the remainder of the address.
-func AddrForNodeID(nid *crypto.NodeID) *Address {
+// AddrForKey takes an ed25519.PublicKey as an argument and returns an *Address.
+// This function returns nil if the key length is not ed25519.PublicKeySize.
+// This address begins with the contents of GetPrefix(), with the last bit set to 0 to indicate an address.
+// The following 8 bits are set to the number of leading 1 bits in the bitwise inverse of the public key.
+// The bitwise inverse of the key, excluding the leading 1 bits and the first leading 0 bit, is truncated to the appropriate length and makes up the remainder of the address.
+func AddrForKey(publicKey ed25519.PublicKey) *Address {
 	// 128 bit address
 	// Begins with prefix
 	// Next bit is a 0
 	// Next 7 bits, interpreted as a uint, are # of leading 1s in the NodeID
 	// Leading 1s and first leading 0 of the NodeID are truncated off
 	// The rest is appended to the IPv6 address (truncated to 128 bits total)
+	if len(publicKey) != ed25519.PublicKeySize {
+		return nil
+	}
+	var buf [ed25519.PublicKeySize]byte
+	copy(buf[:], publicKey)
+	for idx := range buf {
+		buf[idx] = ^buf[idx]
+	}
 	var addr Address
-	var temp []byte
+	var temp = make([]byte, 0, 32)
 	done := false
 	ones := byte(0)
 	bits := byte(0)
 	nBits := 0
-	for idx := 0; idx < 8*len(nid); idx++ {
-		bit := (nid[idx/8] & (0x80 >> byte(idx%8))) >> byte(7-(idx%8))
+	for idx := 0; idx < 8*len(buf); idx++ {
+		bit := (buf[idx/8] & (0x80 >> byte(idx%8))) >> byte(7-(idx%8))
 		if !done && bit != 0 {
 			ones++
 			continue
@@ -80,77 +93,58 @@ func AddrForNodeID(nid *crypto.NodeID) *Address {
 	return &addr
 }
 
-// address_subnetForNodeID takes a *NodeID as an argument and returns a *subnet.
-// This subnet begins with the address prefix, with the last bit set to 1 to indicate a prefix.
-// The following 8 bits are set to the number of leading 1 bits in the NodeID.
-// The NodeID, excluding the leading 1 bits and the first leading 0 bit, is truncated to the appropriate length and makes up the remainder of the subnet.
-func SubnetForNodeID(nid *crypto.NodeID) *Subnet {
+// SubnetForKey takes an ed25519.PublicKey as an argument and returns a *Subnet.
+// This function returns nil if the key length is not ed25519.PublicKeySize.
+// The subnet begins with the address prefix, with the last bit set to 1 to indicate a prefix.
+// The following 8 bits are set to the number of leading 1 bits in the bitwise inverse of the key.
+// The bitwise inverse of the key, excluding the leading 1 bits and the first leading 0 bit, is truncated to the appropriate length and makes up the remainder of the subnet.
+func SubnetForKey(publicKey ed25519.PublicKey) *Subnet {
 	// Exactly as the address version, with two exceptions:
 	//  1) The first bit after the fixed prefix is a 1 instead of a 0
 	//  2) It's truncated to a subnet prefix length instead of 128 bits
-	addr := *AddrForNodeID(nid)
+	addr := AddrForKey(publicKey)
+	if addr == nil {
+		return nil
+	}
 	var snet Subnet
 	copy(snet[:], addr[:])
-	prefix := GetPrefix()
+	prefix := GetPrefix() // nolint:staticcheck
 	snet[len(prefix)-1] |= 0x01
 	return &snet
 }
 
-// getNodeIDandMask returns two *NodeID.
-// The first is a NodeID with all the bits known from the address set to their correct values.
-// The second is a bitmask with 1 bit set for each bit that was known from the address.
-// This is used to look up NodeIDs in the DHT and tell if they match an address.
-func (a *Address) GetNodeIDandMask() (*crypto.NodeID, *crypto.NodeID) {
-	// Mask is a bitmask to mark the bits visible from the address
-	// This means truncated leading 1s, first leading 0, and visible part of addr
-	var nid crypto.NodeID
-	var mask crypto.NodeID
-	prefix := GetPrefix()
+// GetKey returns the partial ed25519.PublicKey for the Address.
+// This is used for key lookup.
+func (a *Address) GetKey() ed25519.PublicKey {
+	var key [ed25519.PublicKeySize]byte
+	prefix := GetPrefix() // nolint:staticcheck
 	ones := int(a[len(prefix)])
 	for idx := 0; idx < ones; idx++ {
-		nid[idx/8] |= 0x80 >> byte(idx%8)
+		key[idx/8] |= 0x80 >> byte(idx%8)
 	}
-	nidOffset := ones + 1
+	keyOffset := ones + 1
 	addrOffset := 8*len(prefix) + 8
 	for idx := addrOffset; idx < 8*len(a); idx++ {
 		bits := a[idx/8] & (0x80 >> byte(idx%8))
 		bits <<= byte(idx % 8)
-		nidIdx := nidOffset + (idx - addrOffset)
-		bits >>= byte(nidIdx % 8)
-		nid[nidIdx/8] |= bits
+		keyIdx := keyOffset + (idx - addrOffset)
+		bits >>= byte(keyIdx % 8)
+		idx := keyIdx / 8
+		if idx >= len(key) {
+			break
+		}
+		key[idx] |= bits
 	}
-	maxMask := 8*(len(a)-len(prefix)-1) + ones + 1
-	for idx := 0; idx < maxMask; idx++ {
-		mask[idx/8] |= 0x80 >> byte(idx%8)
+	for idx := range key {
+		key[idx] = ^key[idx]
 	}
-	return &nid, &mask
+	return ed25519.PublicKey(key[:])
 }
 
-// getNodeIDandMask returns two *NodeID.
-// The first is a NodeID with all the bits known from the address set to their correct values.
-// The second is a bitmask with 1 bit set for each bit that was known from the subnet.
-// This is used to look up NodeIDs in the DHT and tell if they match a subnet.
-func (s *Subnet) GetNodeIDandMask() (*crypto.NodeID, *crypto.NodeID) {
-	// As with the address version, but visible parts of the subnet prefix instead
-	var nid crypto.NodeID
-	var mask crypto.NodeID
-	prefix := GetPrefix()
-	ones := int(s[len(prefix)])
-	for idx := 0; idx < ones; idx++ {
-		nid[idx/8] |= 0x80 >> byte(idx%8)
-	}
-	nidOffset := ones + 1
-	addrOffset := 8*len(prefix) + 8
-	for idx := addrOffset; idx < 8*len(s); idx++ {
-		bits := s[idx/8] & (0x80 >> byte(idx%8))
-		bits <<= byte(idx % 8)
-		nidIdx := nidOffset + (idx - addrOffset)
-		bits >>= byte(nidIdx % 8)
-		nid[nidIdx/8] |= bits
-	}
-	maxMask := 8*(len(s)-len(prefix)-1) + ones + 1
-	for idx := 0; idx < maxMask; idx++ {
-		mask[idx/8] |= 0x80 >> byte(idx%8)
-	}
-	return &nid, &mask
+// GetKey returns the partial ed25519.PublicKey for the Subnet.
+// This is used for key lookup.
+func (s *Subnet) GetKey() ed25519.PublicKey {
+	var addr Address
+	copy(addr[:], s[:])
+	return addr.GetKey()
 }

src/address/address_test.go

@@ -0,0 +1,114 @@
+package address
+
+import (
+	"bytes"
+	"crypto/ed25519"
+	"crypto/rand"
+	"testing"
+)
+
+func TestAddress_Address_IsValid(t *testing.T) {
+	var address Address
+	_, _ = rand.Read(address[:])
+
+	address[0] = 0
+
+	if address.IsValid() {
+		t.Fatal("invalid address marked as valid")
+	}
+
+	address[0] = 0x03
+
+	if address.IsValid() {
+		t.Fatal("invalid address marked as valid")
+	}
+
+	address[0] = 0x02
+
+	if !address.IsValid() {
+		t.Fatal("valid address marked as invalid")
+	}
+}
+
+func TestAddress_Subnet_IsValid(t *testing.T) {
+	var subnet Subnet
+	_, _ = rand.Read(subnet[:])
+
+	subnet[0] = 0
+
+	if subnet.IsValid() {
+		t.Fatal("invalid subnet marked as valid")
+	}
+
+	subnet[0] = 0x02
+
+	if subnet.IsValid() {
+		t.Fatal("invalid subnet marked as valid")
+	}
+
+	subnet[0] = 0x03
+
+	if !subnet.IsValid() {
+		t.Fatal("valid subnet marked as invalid")
+	}
+}
+
+func TestAddress_AddrForKey(t *testing.T) {
+	publicKey := ed25519.PublicKey{
+		189, 186, 207, 216, 34, 64, 222, 61, 205, 18, 57, 36, 203, 181, 82, 86,
+		251, 141, 171, 8, 170, 152, 227, 5, 82, 138, 184, 79, 65, 158, 110, 251,
+	}
+
+	expectedAddress := Address{
+		2, 0, 132, 138, 96, 79, 187, 126, 67, 132, 101, 219, 141, 182, 104, 149,
+	}
+
+	if *AddrForKey(publicKey) != expectedAddress {
+		t.Fatal("invalid address returned")
+	}
+}
+
+func TestAddress_SubnetForKey(t *testing.T) {
+	publicKey := ed25519.PublicKey{
+		189, 186, 207, 216, 34, 64, 222, 61, 205, 18, 57, 36, 203, 181, 82, 86,
+		251, 141, 171, 8, 170, 152, 227, 5, 82, 138, 184, 79, 65, 158, 110, 251,
+	}
+
+	expectedSubnet := Subnet{3, 0, 132, 138, 96, 79, 187, 126}
+
+	if *SubnetForKey(publicKey) != expectedSubnet {
+		t.Fatal("invalid subnet returned")
+	}
+}
+
+func TestAddress_Address_GetKey(t *testing.T) {
+	address := Address{
+		2, 0, 132, 138, 96, 79, 187, 126, 67, 132, 101, 219, 141, 182, 104, 149,
+	}
+
+	expectedPublicKey := ed25519.PublicKey{
+		189, 186, 207, 216, 34, 64, 222, 61,
+		205, 18, 57, 36, 203, 181, 127, 255,
+		255, 255, 255, 255, 255, 255, 255, 255,
+		255, 255, 255, 255, 255, 255, 255, 255,
+	}
+
+	if !bytes.Equal(address.GetKey(), expectedPublicKey) {
+		t.Fatal("invalid public key returned")
+	}
+}
+
+func TestAddress_Subnet_GetKey(t *testing.T) {
+	subnet := Subnet{3, 0, 132, 138, 96, 79, 187, 126}
+
+	expectedPublicKey := ed25519.PublicKey{
+		189, 186, 207, 216, 34, 64, 255, 255,
+		255, 255, 255, 255, 255, 255, 255, 255,
+		255, 255, 255, 255, 255, 255, 255, 255,
+		255, 255, 255, 255, 255, 255, 255, 255,
+	}
+
+	if !bytes.Equal(subnet.GetKey(), expectedPublicKey) {
+		t.Fatal("invalid public key returned")
+	}
+}

src/admin/addpeer.go

@@ -0,0 +1,21 @@
+package admin
+
+import (
+	"fmt"
+	"net/url"
+)
+
+type AddPeerRequest struct {
+	Uri   string `json:"uri"`
+	Sintf string `json:"interface,omitempty"`
+}
+
+type AddPeerResponse struct{}
+
+func (a *AdminSocket) addPeerHandler(req *AddPeerRequest, _ *AddPeerResponse) error {
+	u, err := url.Parse(req.Uri)
+	if err != nil {
+		return fmt.Errorf("unable to parse peering URI: %w", err)
+	}
+	return a.core.AddPeer(u, req.Sintf)
+}

src/admin/admin.go

@@ -0,0 +1,370 @@
+package admin
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net"
+	"net/url"
+	"os"
+	"sort"
+
+	"strings"
+	"time"
+
+	"github.com/yggdrasil-network/yggdrasil-go/src/core"
+)
+
+// TODO: Add authentication
+
+type AdminSocket struct {
+	core     *core.Core
+	log      core.Logger
+	listener net.Listener
+	handlers map[string]handler
+	done     chan struct{}
+	config   struct {
+		listenaddr ListenAddress
+	}
+}
+
+type AdminSocketRequest struct {
+	Name      string          `json:"request"`
+	Arguments json.RawMessage `json:"arguments,omitempty"`
+	KeepAlive bool            `json:"keepalive,omitempty"`
+}
+
+type AdminSocketResponse struct {
+	Status   string             `json:"status"`
+	Error    string             `json:"error,omitempty"`
+	Request  AdminSocketRequest `json:"request"`
+	Response json.RawMessage    `json:"response"`
+}
+
+type handler struct {
+	desc    string              // What does the endpoint do?
+	args    []string            // List of human-readable argument names
+	handler core.AddHandlerFunc // First is input map, second is output
+}
+
+type ListResponse struct {
+	List []ListEntry `json:"list"`
+}
+
+type ListEntry struct {
+	Command     string   `json:"command"`
+	Description string   `json:"description"`
+	Fields      []string `json:"fields,omitempty"`
+}
+
+// AddHandler is called for each admin function to add the handler and help documentation to the API.
+func (a *AdminSocket) AddHandler(name, desc string, args []string, handlerfunc core.AddHandlerFunc) error {
+	if _, ok := a.handlers[strings.ToLower(name)]; ok {
+		return errors.New("handler already exists")
+	}
+	a.handlers[strings.ToLower(name)] = handler{
+		desc:    desc,
+		args:    args,
+		handler: handlerfunc,
+	}
+	return nil
+}
+
+// Init runs the initial admin setup.
+func New(c *core.Core, log core.Logger, opts ...SetupOption) (*AdminSocket, error) {
+	a := &AdminSocket{
+		core:     c,
+		log:      log,
+		handlers: make(map[string]handler),
+	}
+	for _, opt := range opts {
+		a._applyOption(opt)
+	}
+	if a.config.listenaddr == "none" || a.config.listenaddr == "" {
+		return nil, nil
+	}
+
+	listenaddr := string(a.config.listenaddr)
+	u, err := url.Parse(listenaddr)
+	if err == nil {
+		switch strings.ToLower(u.Scheme) {
+		case "unix":
+			if _, err := os.Stat(u.Path); err == nil {
+				a.log.Debugln("Admin socket", u.Path, "already exists, trying to clean up")
+				if _, err := net.DialTimeout("unix", u.Path, time.Second*2); err == nil || err.(net.Error).Timeout() {
+					a.log.Errorln("Admin socket", u.Path, "already exists and is in use by another process")
+					os.Exit(1)
+				} else {
+					if err := os.Remove(u.Path); err == nil {
+						a.log.Debugln(u.Path, "was cleaned up")
+					} else {
+						a.log.Errorln(u.Path, "already exists and was not cleaned up:", err)
+						os.Exit(1)
+					}
+				}
+			}
+			a.listener, err = net.Listen("unix", u.Path)
+			if err == nil {
+				switch u.Path[:1] {
+				case "@": // maybe abstract namespace
+				default:
+					if err := os.Chmod(u.Path, 0660); err != nil {
+						a.log.Warnln("WARNING:", u.Path, "may have unsafe permissions!")
+					}
+				}
+			}
+		case "tcp":
+			a.listener, err = net.Listen("tcp", u.Host)
+		default:
+			a.listener, err = net.Listen("tcp", listenaddr)
+		}
+	} else {
+		a.listener, err = net.Listen("tcp", listenaddr)
+	}
+	if err != nil {
+		a.log.Errorf("Admin socket failed to listen: %v", err)
+		os.Exit(1)
+	}
+	a.log.Infof("%s admin socket listening on %s",
+		strings.ToUpper(a.listener.Addr().Network()),
+		a.listener.Addr().String())
+
+	_ = a.AddHandler("list", "List available commands", []string{}, func(_ json.RawMessage) (interface{}, error) {
+		res := &ListResponse{}
+		for name, handler := range a.handlers {
+			res.List = append(res.List, ListEntry{
+				Command:     name,
+				Description: handler.desc,
+				Fields:      handler.args,
+			})
+		}
+		sort.SliceStable(res.List, func(i, j int) bool {
+			return strings.Compare(res.List[i].Command, res.List[j].Command) < 0
+		})
+		return res, nil
+	})
+	a.done = make(chan struct{})
+	go a.listen()
+	return a, a.core.SetAdmin(a)
+}
+
+func (a *AdminSocket) SetupAdminHandlers() {
+	_ = a.AddHandler(
+		"getSelf", "Show details about this node", []string{},
+		func(in json.RawMessage) (interface{}, error) {
+			req := &GetSelfRequest{}
+			res := &GetSelfResponse{}
+			if err := json.Unmarshal(in, &req); err != nil {
+				return nil, err
+			}
+			if err := a.getSelfHandler(req, res); err != nil {
+				return nil, err
+			}
+			return res, nil
+		},
+	)
+	_ = a.AddHandler(
+		"getPeers", "Show directly connected peers", []string{},
+		func(in json.RawMessage) (interface{}, error) {
+			req := &GetPeersRequest{}
+			res := &GetPeersResponse{}
+			if err := json.Unmarshal(in, &req); err != nil {
+				return nil, err
+			}
+			if err := a.getPeersHandler(req, res); err != nil {
+				return nil, err
+			}
+			return res, nil
+		},
+	)
+	_ = a.AddHandler(
+		"getTree", "Show known Tree entries", []string{},
+		func(in json.RawMessage) (interface{}, error) {
+			req := &GetTreeRequest{}
+			res := &GetTreeResponse{}
+			if err := json.Unmarshal(in, &req); err != nil {
+				return nil, err
+			}
+			if err := a.getTreeHandler(req, res); err != nil {
+				return nil, err
+			}
+			return res, nil
+		},
+	)
+	_ = a.AddHandler(
+		"getPaths", "Show established paths through this node", []string{},
+		func(in json.RawMessage) (interface{}, error) {
+			req := &GetPathsRequest{}
+			res := &GetPathsResponse{}
+			if err := json.Unmarshal(in, &req); err != nil {
+				return nil, err
+			}
+			if err := a.getPathsHandler(req, res); err != nil {
+				return nil, err
+			}
+			return res, nil
+		},
+	)
+	_ = a.AddHandler(
+		"getSessions", "Show established traffic sessions with remote nodes", []string{},
+		func(in json.RawMessage) (interface{}, error) {
+			req := &GetSessionsRequest{}
+			res := &GetSessionsResponse{}
+			if err := json.Unmarshal(in, &req); err != nil {
+				return nil, err
+			}
+			if err := a.getSessionsHandler(req, res); err != nil {
+				return nil, err
+			}
+			return res, nil
+		},
+	)
+	_ = a.AddHandler(
+		"addPeer", "Add a peer to the peer list", []string{"uri", "interface"},
+		func(in json.RawMessage) (interface{}, error) {
+			req := &AddPeerRequest{}
+			res := &AddPeerResponse{}
+			if err := json.Unmarshal(in, &req); err != nil {
+				return nil, err
+			}
+			if err := a.addPeerHandler(req, res); err != nil {
+				return nil, err
+			}
+			return res, nil
+		},
+	)
+	_ = a.AddHandler(
+		"removePeer", "Remove a peer from the peer list", []string{"uri", "interface"},
+		func(in json.RawMessage) (interface{}, error) {
+			req := &RemovePeerRequest{}
+			res := &RemovePeerResponse{}
+			if err := json.Unmarshal(in, &req); err != nil {
+				return nil, err
+			}
+			if err := a.removePeerHandler(req, res); err != nil {
+				return nil, err
+			}
+			return res, nil
+		},
+	)
+}
+
+// IsStarted returns true if the module has been started.
+func (a *AdminSocket) IsStarted() bool {
+	select {
+	case <-a.done:
+		// Not blocking, so we're not currently running
+		return false
+	default:
+		// Blocked, so we must have started
+		return true
+	}
+}
+
+// Stop will stop the admin API and close the socket.
+func (a *AdminSocket) Stop() error {
+	if a == nil {
+		return nil
+	}
+	if a.listener != nil {
+		select {
+		case <-a.done:
+		default:
+			close(a.done)
+		}
+		return a.listener.Close()
+	}
+	return nil
+}
+
+// listen is run by start and manages API connections.
+func (a *AdminSocket) listen() {
+	defer a.listener.Close()
+	for {
+		conn, err := a.listener.Accept()
+		if err == nil {
+			go a.handleRequest(conn)
+		} else {
+			select {
+			case <-a.done:
+				// Not blocked, so we havent started or already stopped
+				return
+			default:
+				// Blocked, so we're supposed to keep running
+			}
+		}
+	}
+}
+
+// handleRequest calls the request handler for each request sent to the admin API.
+func (a *AdminSocket) handleRequest(conn net.Conn) {
+	decoder := json.NewDecoder(conn)
+	decoder.DisallowUnknownFields()
+
+	encoder := json.NewEncoder(conn)
+	encoder.SetIndent("", "  ")
+
+	defer conn.Close()
+
+	for {
+		var err error
+		var buf json.RawMessage
+		var req AdminSocketRequest
+		var resp AdminSocketResponse
+		req.Arguments = []byte("{}")
+		if err := func() error {
+			if err = decoder.Decode(&buf); err != nil {
+				return fmt.Errorf("Failed to find request")
+			}
+			if err = json.Unmarshal(buf, &req); err != nil {
+				return fmt.Errorf("Failed to unmarshal request")
+			}
+			resp.Request = req
+			if req.Name == "" {
+				return fmt.Errorf("No request specified")
+			}
+			reqname := strings.ToLower(req.Name)
+			handler, ok := a.handlers[reqname]
+			if !ok {
+				return fmt.Errorf("Unknown action '%s', try 'list' for help", reqname)
+			}
+			res, err := handler.handler(req.Arguments)
+			if err != nil {
+				return err
+			}
+			if resp.Response, err = json.Marshal(res); err != nil {
+				return fmt.Errorf("Failed to marshal response: %w", err)
+			}
+			resp.Status = "success"
+			return nil
+		}(); err != nil {
+			resp.Status = "error"
+			resp.Error = err.Error()
+		}
+		if err = encoder.Encode(resp); err != nil {
+			a.log.Debugln("Encode error:", err)
+		}
+		if !req.KeepAlive {
+			break
+		} else {
+			continue
+		}
+	}
+}
+
+type DataUnit uint64
+
+func (d DataUnit) String() string {
+	switch {
+	case d >= 1024*1024*1024*1024:
+		return fmt.Sprintf("%2.1fTB", float64(d)/1024/1024/1024/1024)
+	case d >= 1024*1024*1024:
+		return fmt.Sprintf("%2.1fGB", float64(d)/1024/1024/1024)
+	case d >= 1024*1024:
+		return fmt.Sprintf("%2.1fMB", float64(d)/1024/1024)
+	case d >= 100:
+		return fmt.Sprintf("%2.1fKB", float64(d)/1024)
+	default:
+		return fmt.Sprintf("%dB", d)
+	}
+}

src/admin/error.go

@@ -0,0 +1,5 @@
+package admin
+
+type ErrorResponse struct {
+	Error string `json:"error"`
+}

src/admin/getpaths.go

@@ -0,0 +1,42 @@
+package admin
+
+import (
+	"encoding/hex"
+	"net"
+	"slices"
+	"strings"
+
+	"github.com/yggdrasil-network/yggdrasil-go/src/address"
+)
+
+type GetPathsRequest struct {
+}
+
+type GetPathsResponse struct {
+	Paths []PathEntry `json:"paths"`
+}
+
+type PathEntry struct {
+	IPAddress string   `json:"address"`
+	PublicKey string   `json:"key"`
+	Path      []uint64 `json:"path"`
+	Sequence  uint64   `json:"sequence"`
+}
+
+func (a *AdminSocket) getPathsHandler(_ *GetPathsRequest, res *GetPathsResponse) error {
+	paths := a.core.GetPaths()
+	res.Paths = make([]PathEntry, 0, len(paths))
+	for _, p := range paths {
+		addr := address.AddrForKey(p.Key)
+		res.Paths = append(res.Paths, PathEntry{
+			IPAddress: net.IP(addr[:]).String(),
+			PublicKey: hex.EncodeToString(p.Key),
+			Path:      p.Path,
+			Sequence:  p.Sequence,
+		})
+	}
+	slices.SortStableFunc(res.Paths, func(a, b PathEntry) int {
+		return strings.Compare(a.PublicKey, b.PublicKey)
+	})
+	return nil
+}

src/admin/getpeers.go

@@ -0,0 +1,91 @@
+package admin
+
+import (
+	"encoding/hex"
+	"net"
+	"slices"
+	"strings"
+	"time"
+
+	"github.com/yggdrasil-network/yggdrasil-go/src/address"
+)
+
+type GetPeersRequest struct {
+}
+
+type GetPeersResponse struct {
+	Peers []PeerEntry `json:"peers"`
+}
+
+type PeerEntry struct {
+	URI           string        `json:"remote,omitempty"`
+	Up            bool          `json:"up"`
+	Inbound       bool          `json:"inbound"`
+	IPAddress     string        `json:"address,omitempty"`
+	PublicKey     string        `json:"key"`
+	Port          uint64        `json:"port"`
+	Priority      uint64        `json:"priority"`
+	Cost          uint64        `json:"cost"`
+	RXBytes       DataUnit      `json:"bytes_recvd,omitempty"`
+	TXBytes       DataUnit      `json:"bytes_sent,omitempty"`
+	RXRate        DataUnit      `json:"rate_recvd,omitempty"`
+	TXRate        DataUnit      `json:"rate_sent,omitempty"`
+	Uptime        float64       `json:"uptime,omitempty"`
+	Latency       time.Duration `json:"latency,omitempty"`
+	LastErrorTime time.Duration `json:"last_error_time,omitempty"`
+	LastError     string        `json:"last_error,omitempty"`
+}
+
+func (a *AdminSocket) getPeersHandler(_ *GetPeersRequest, res *GetPeersResponse) error {
+	peers := a.core.GetPeers()
+	res.Peers = make([]PeerEntry, 0, len(peers))
+	for _, p := range peers {
+		peer := PeerEntry{
+			Port:     p.Port,
+			Up:       p.Up,
+			Inbound:  p.Inbound,
+			Priority: uint64(p.Priority), // can't be uint8 thanks to gobind
+			Cost:     p.Cost,
+			URI:      p.URI,
+			RXBytes:  DataUnit(p.RXBytes),
+			TXBytes:  DataUnit(p.TXBytes),
+			RXRate:   DataUnit(p.RXRate),
+			TXRate:   DataUnit(p.TXRate),
+			Uptime:   p.Uptime.Seconds(),
+		}
+		if p.Latency > 0 {
+			peer.Latency = p.Latency
+		}
+		if addr := address.AddrForKey(p.Key); addr != nil {
+			peer.PublicKey = hex.EncodeToString(p.Key)
+			peer.IPAddress = net.IP(addr[:]).String()
+		}
+		if p.LastError != nil {
+			peer.LastError = p.LastError.Error()
+			peer.LastErrorTime = time.Since(p.LastErrorTime)
+		}
+		res.Peers = append(res.Peers, peer)
+	}
+	slices.SortStableFunc(res.Peers, func(a, b PeerEntry) int {
+		if !a.Inbound && b.Inbound {
+			return -1
+		}
+		if a.Inbound && !b.Inbound {
+			return 1
+		}
+		if d := strings.Compare(a.PublicKey, b.PublicKey); d != 0 {
+			return d
+		}
+		if d := a.Priority - b.Priority; d != 0 {
+			return int(d)
+		}
+		if d := a.Cost - b.Cost; d != 0 {
+			return int(d)
+		}
+		if d := a.Uptime - b.Uptime; d != 0 {
+			return int(d)
+		}
+		return 0
+	})
+	return nil
+}

src/admin/getself.go

@@ -0,0 +1,30 @@
+package admin
+
+import (
+	"encoding/hex"
+
+	"github.com/yggdrasil-network/yggdrasil-go/src/version"
+)
+
+type GetSelfRequest struct{}
+
+type GetSelfResponse struct {
+	BuildName      string `json:"build_name"`
+	BuildVersion   string `json:"build_version"`
+	PublicKey      string `json:"key"`
+	IPAddress      string `json:"address"`
+	RoutingEntries uint64 `json:"routing_entries"`
+	Subnet         string `json:"subnet"`
+}
+
+func (a *AdminSocket) getSelfHandler(_ *GetSelfRequest, res *GetSelfResponse) error {
+	self := a.core.GetSelf()
+	snet := a.core.Subnet()
+	res.BuildName = version.BuildName()
+	res.BuildVersion = version.BuildVersion()
+	res.PublicKey = hex.EncodeToString(self.Key[:])
+	res.IPAddress = a.core.Address().String()
+	res.Subnet = snet.String()
+	res.RoutingEntries = self.RoutingEntries
+	return nil
+}

src/admin/getsessions.go

@@ -0,0 +1,43 @@
+package admin
+
+import (
+	"encoding/hex"
+	"net"
+	"slices"
+	"strings"
+
+	"github.com/yggdrasil-network/yggdrasil-go/src/address"
+)
+
+type GetSessionsRequest struct{}
+
+type GetSessionsResponse struct {
+	Sessions []SessionEntry `json:"sessions"`
+}
+
+type SessionEntry struct {
+	IPAddress string   `json:"address"`
+	PublicKey string   `json:"key"`
+	RXBytes   DataUnit `json:"bytes_recvd"`
+	TXBytes   DataUnit `json:"bytes_sent"`
+	Uptime    float64  `json:"uptime"`
+}
+
+func (a *AdminSocket) getSessionsHandler(_ *GetSessionsRequest, res *GetSessionsResponse) error {
+	sessions := a.core.GetSessions()
+	res.Sessions = make([]SessionEntry, 0, len(sessions))
+	for _, s := range sessions {
+		addr := address.AddrForKey(s.Key)
+		res.Sessions = append(res.Sessions, SessionEntry{
+			IPAddress: net.IP(addr[:]).String(),
+			PublicKey: hex.EncodeToString(s.Key[:]),
+			RXBytes:   DataUnit(s.RXBytes),
+			TXBytes:   DataUnit(s.TXBytes),
+			Uptime:    s.Uptime.Seconds(),
+		})
+	}
+	slices.SortStableFunc(res.Sessions, func(a, b SessionEntry) int {
+		return strings.Compare(a.PublicKey, b.PublicKey)
+	})
+	return nil
+}

src/admin/gettree.go

@@ -0,0 +1,41 @@
+package admin
+
+import (
+	"encoding/hex"
+	"net"
+	"slices"
+	"strings"
+
+	"github.com/yggdrasil-network/yggdrasil-go/src/address"
+)
+
+type GetTreeRequest struct{}
+
+type GetTreeResponse struct {
+	Tree []TreeEntry `json:"tree"`
+}
+
+type TreeEntry struct {
+	IPAddress string `json:"address"`
+	PublicKey string `json:"key"`
+	Parent    string `json:"parent"`
+	Sequence  uint64 `json:"sequence"`
+}
+
+func (a *AdminSocket) getTreeHandler(_ *GetTreeRequest, res *GetTreeResponse) error {
+	tree := a.core.GetTree()
+	res.Tree = make([]TreeEntry, 0, len(tree))
+	for _, d := range tree {
+		addr := address.AddrForKey(d.Key)
+		res.Tree = append(res.Tree, TreeEntry{
+			IPAddress: net.IP(addr[:]).String(),
+			PublicKey: hex.EncodeToString(d.Key[:]),
+			Parent:    hex.EncodeToString(d.Parent[:]),
+			Sequence:  d.Sequence,
+		})
+	}
+	slices.SortStableFunc(res.Tree, func(a, b TreeEntry) int {
+		return strings.Compare(a.PublicKey, b.PublicKey)
+	})
+	return nil
+}

src/admin/options.go

@@ -0,0 +1,79 @@
+package admin
+
+import (
+	"crypto/ed25519"
+	"encoding/hex"
+	"encoding/json"
+	"net"
+	"sync"
+	"time"
+
+	"github.com/Arceliar/ironwood/network"
+
+	"github.com/yggdrasil-network/yggdrasil-go/src/address"
+)
+
+func (c *AdminSocket) _applyOption(opt SetupOption) {
+	switch v := opt.(type) {
+	case ListenAddress:
+		c.config.listenaddr = v
+	case LogLookups:
+		c.logLookups()
+	}
+}
+
+type SetupOption interface {
+	isSetupOption()
+}
+
+type ListenAddress string
+
+func (a ListenAddress) isSetupOption() {}
+
+type LogLookups struct{}
+
+func (l LogLookups) isSetupOption() {}
+
+func (a *AdminSocket) logLookups() {
+	type resi struct {
+		Address string   `json:"addr"`
+		Key     string   `json:"key"`
+		Path    []uint64 `json:"path"`
+		Time    int64    `json:"time"`
+	}
+	type res struct {
+		Infos []resi `json:"infos"`
+	}
+	type info struct {
+		path []uint64
+		time time.Time
+	}
+	type edk [ed25519.PublicKeySize]byte
+	infos := make(map[edk]info)
+	var m sync.Mutex
+	a.core.PacketConn.PacketConn.Debug.SetDebugLookupLogger(func(l network.DebugLookupInfo) {
+		var k edk
+		copy(k[:], l.Key[:])
+		m.Lock()
+		infos[k] = info{path: l.Path, time: time.Now()}
+		m.Unlock()
+	})
+	_ = a.AddHandler(
+		"lookups", "Dump a record of lookups received in the past hour", []string{},
+		func(in json.RawMessage) (interface{}, error) {
+			m.Lock()
+			rs := make([]resi, 0, len(infos))
+			for k, v := range infos {
+				if time.Since(v.time) > 24*time.Hour {
+					// TODO? automatic cleanup, so we don't need to call lookups periodically to prevent leaks
+					delete(infos, k)
+				}
+				a := address.AddrForKey(ed25519.PublicKey(k[:]))
+				addr := net.IP(a[:]).String()
+				rs = append(rs, resi{Address: addr, Key: hex.EncodeToString(k[:]), Path: v.path, Time: v.time.Unix()})
+			}
+			m.Unlock()
+			return &res{Infos: rs}, nil
+		},
+	)
+}

src/admin/removepeer.go

@@ -0,0 +1,21 @@
+package admin
+
+import (
+	"fmt"
+	"net/url"
+)
+
+type RemovePeerRequest struct {
+	Uri   string `json:"uri"`
+	Sintf string `json:"interface,omitempty"`
+}
+
+type RemovePeerResponse struct{}
+
+func (a *AdminSocket) removePeerHandler(req *RemovePeerRequest, _ *RemovePeerResponse) error {
+	u, err := url.Parse(req.Uri)
+	if err != nil {
+		return fmt.Errorf("unable to parse peering URI: %w", err)
+	}
+	return a.core.RemovePeer(u, req.Sintf)
+}

src/config/config.go

@@ -1,91 +1,260 @@
+/*
+The config package contains structures related to the configuration of an
+Yggdrasil node.
+
+The configuration contains, amongst other things, encryption keys which are used
+to derive a node's identity, information about peerings and node information
+that is shared with the network. There are also some module-specific options
+related to TUN, multicast and the admin socket.
+
+In order for a node to maintain the same identity across restarts, you should
+persist the configuration onto the filesystem or into some configuration storage
+so that the encryption keys (and therefore the node ID) do not change.
+
+Note that Yggdrasil will automatically populate sane defaults for any
+configuration option that is not provided.
+*/
 package config
 
 import (
+	"bytes"
+	"crypto/ed25519"
+	"crypto/rand"
+	"crypto/tls"
+	"crypto/x509"
+	"crypto/x509/pkix"
 	"encoding/hex"
+	"encoding/json"
+	"encoding/pem"
+	"fmt"
+	"io"
+	"math/big"
+	"os"
+	"time"
 
-	"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
-	"github.com/yggdrasil-network/yggdrasil-go/src/defaults"
+	"github.com/hjson/hjson-go/v4"
+	"golang.org/x/text/encoding/unicode"
 )
 
-// NodeConfig defines all configuration values needed to run a signle yggdrasil node
+// NodeConfig is the main configuration structure, containing configuration
+// options that are necessary for an Yggdrasil node to run. You will need to
+// supply one of these structs to the Yggdrasil core when starting a node.
 type NodeConfig struct {
-	Peers                       []string               `comment:"List of connection strings for outbound peer connections in URI format,\ne.g. tcp://a.b.c.d:e or socks://a.b.c.d:e/f.g.h.i:j. These connections\nwill obey the operating system routing table, therefore you should\nuse this section when you may connect via different interfaces."`
-	InterfacePeers              map[string][]string    `comment:"List of connection strings for outbound peer connections in URI format,\narranged by source interface, e.g. { \"eth0\": [ tcp://a.b.c.d:e ] }.\nNote that SOCKS peerings will NOT be affected by this option and should\ngo in the \"Peers\" section instead."`
-	Listen                      []string               `comment:"Listen addresses for incoming connections. You will need to add\nlisteners in order to accept incoming peerings from non-local nodes.\nMulticast peer discovery will work regardless of any listeners set\nhere. Each listener should be specified in URI format as above, e.g.\ntcp://0.0.0.0:0 or tcp://[::]:0 to listen on all interfaces."`
-	AdminListen                 string                 `comment:"Listen address for admin connections. Default is to listen for local\nconnections either on TCP/9001 or a UNIX socket depending on your\nplatform. Use this value for yggdrasilctl -endpoint=X. To disable\nthe admin socket, use the value \"none\" instead."`
-	MulticastInterfaces         []string               `comment:"Regular expressions for which interfaces multicast peer discovery\nshould be enabled on. If none specified, multicast peer discovery is\ndisabled. The default value is .* which uses all interfaces."`
-	AllowedEncryptionPublicKeys []string               `comment:"List of peer encryption public keys to allow incoming TCP peering\nconnections from. If left empty/undefined then all connections will\nbe allowed by default. This does not affect outgoing peerings, nor\ndoes it affect link-local peers discovered via multicast."`
-	EncryptionPublicKey         string                 `comment:"Your public encryption key. Your peers may ask you for this to put\ninto their AllowedEncryptionPublicKeys configuration."`
-	EncryptionPrivateKey        string                 `comment:"Your private encryption key. DO NOT share this with anyone!"`
-	SigningPublicKey            string                 `comment:"Your public signing key. You should not ordinarily need to share\nthis with anyone."`
-	SigningPrivateKey           string                 `comment:"Your private signing key. DO NOT share this with anyone!"`
-	LinkLocalTCPPort            uint16                 `comment:"The port number to be used for the link-local TCP listeners for the\nconfigured MulticastInterfaces. This option does not affect listeners\nspecified in the Listen option. Unless you plan to firewall link-local\ntraffic, it is best to leave this as the default value of 0. This\noption cannot currently be changed by reloading config during runtime."`
-	IfName                      string                 `comment:"Local network interface name for TUN/TAP adapter, or \"auto\" to select\nan interface automatically, or \"none\" to run without TUN/TAP."`
-	IfTAPMode                   bool                   `comment:"Set local network interface to TAP mode rather than TUN mode if\nsupported by your platform - option will be ignored if not."`
-	IfMTU                       int                    `comment:"Maximux Transmission Unit (MTU) size for your local TUN/TAP interface.\nDefault is the largest supported size for your platform. The lowest\npossible value is 1280."`
-	SessionFirewall             SessionFirewall        `comment:"The session firewall controls who can send/receive network traffic\nto/from. This is useful if you want to protect this node without\nresorting to using a real firewall. This does not affect traffic\nbeing routed via this node to somewhere else. Rules are prioritised as\nfollows: blacklist, whitelist, always allow outgoing, direct, remote."`
-	TunnelRouting               TunnelRouting          `comment:"Allow tunneling non-Yggdrasil traffic over Yggdrasil. This effectively\nallows you to use Yggdrasil to route to, or to bridge other networks,\nsimilar to a VPN tunnel. Tunnelling works between any two nodes and\ndoes not require them to be directly peered."`
-	SwitchOptions               SwitchOptions          `comment:"Advanced options for tuning the switch. Normally you will not need\nto edit these options."`
-	NodeInfoPrivacy             bool                   `comment:"By default, nodeinfo contains some defaults including the platform,\narchitecture and Yggdrasil version. These can help when surveying\nthe network and diagnosing network routing problems. Enabling\nnodeinfo privacy prevents this, so that only items specified in\n\"NodeInfo\" are sent back if specified."`
-	NodeInfo                    map[string]interface{} `comment:"Optional node info. This must be a { \"key\": \"value\", ... } map\nor set as null. This is entirely optional but, if set, is visible\nto the whole network on request."`
+	PrivateKey          KeyBytes                   `json:",omitempty" comment:"Your private key. DO NOT share this with anyone!"`
+	PrivateKeyPath      string                     `json:",omitempty" comment:"The path to your private key file in PEM format."`
+	Certificate         *tls.Certificate           `json:"-"`
+	Peers               []string                   `comment:"List of outbound peer connection strings (e.g. tls://a.b.c.d:e or\nsocks://a.b.c.d:e/f.g.h.i:j). Connection strings can contain options,\nsee https://yggdrasil-network.github.io/configurationref.html#peers.\nYggdrasil has no concept of bootstrap nodes - all network traffic\nwill transit peer connections. Therefore make sure to only peer with\nnearby nodes that have good connectivity and low latency. Avoid adding\npeers to this list from distant countries as this will worsen your\nnode's connectivity and performance considerably."`
+	InterfacePeers      map[string][]string        `comment:"List of connection strings for outbound peer connections in URI format,\narranged by source interface, e.g. { \"eth0\": [ \"tls://a.b.c.d:e\" ] }.\nYou should only use this option if your machine is multi-homed and you\nwant to establish outbound peer connections on different interfaces.\nOtherwise you should use \"Peers\"."`
+	Listen              []string                   `comment:"Listen addresses for incoming connections. You will need to add\nlisteners in order to accept incoming peerings from non-local nodes.\nThis is not required if you wish to establish outbound peerings only.\nMulticast peer discovery will work regardless of any listeners set\nhere. Each listener should be specified in URI format as above, e.g.\ntls://0.0.0.0:0 or tls://[::]:0 to listen on all interfaces."`
+	AdminListen         string                     `json:",omitempty" comment:"Listen address for admin connections. Default is to listen for local\nconnections either on TCP/9001 or a UNIX socket depending on your\nplatform. Use this value for yggdrasilctl -endpoint=X. To disable\nthe admin socket, use the value \"none\" instead."`
+	MulticastInterfaces []MulticastInterfaceConfig `comment:"Configuration for which interfaces multicast peer discovery should be\nenabled on. Regex is a regular expression which is matched against an\ninterface name, and interfaces use the first configuration that they\nmatch against. Beacon controls whether or not your node advertises its\npresence to others, whereas Listen controls whether or not your node\nlistens out for and tries to connect to other advertising nodes. See\nhttps://yggdrasil-network.github.io/configurationref.html#multicastinterfaces\nfor more supported options."`
+	AllowedPublicKeys   []string                   `comment:"List of peer public keys to allow incoming peering connections\nfrom. If left empty/undefined then all connections will be allowed\nby default. This does not affect outgoing peerings, nor does it\naffect link-local peers discovered via multicast.\nWARNING: THIS IS NOT A FIREWALL and DOES NOT limit who can reach\nopen ports or services running on your machine!"`
+	IfName              string                     `comment:"Local network interface name for TUN adapter, or \"auto\" to select\nan interface automatically, or \"none\" to run without TUN."`
+	IfMTU               uint64                     `comment:"Maximum Transmission Unit (MTU) size for your local TUN interface.\nDefault is the largest supported size for your platform. The lowest\npossible value is 1280."`
+	LogLookups          bool                       `json:",omitempty"`
+	NodeInfoPrivacy     bool                       `comment:"By default, nodeinfo contains some defaults including the platform,\narchitecture and Yggdrasil version. These can help when surveying\nthe network and diagnosing network routing problems. Enabling\nnodeinfo privacy prevents this, so that only items specified in\n\"NodeInfo\" are sent back if specified."`
+	NodeInfo            map[string]interface{}     `comment:"Optional nodeinfo. This must be a { \"key\": \"value\", ... } map\nor set as null. This is entirely optional but, if set, is visible\nto the whole network on request."`
 }
 
-// SessionFirewall controls the session firewall configuration
-type SessionFirewall struct {
-	Enable                        bool     `comment:"Enable or disable the session firewall. If disabled, network traffic\nfrom any node will be allowed. If enabled, the below rules apply."`
-	AllowFromDirect               bool     `comment:"Allow network traffic from directly connected peers."`
-	AllowFromRemote               bool     `comment:"Allow network traffic from remote nodes on the network that you are\nnot directly peered with."`
-	AlwaysAllowOutbound           bool     `comment:"Allow outbound network traffic regardless of AllowFromDirect or\nAllowFromRemote. This does allow a remote node to send unsolicited\ntraffic back to you for the length of the session."`
-	WhitelistEncryptionPublicKeys []string `comment:"List of public keys from which network traffic is always accepted,\nregardless of AllowFromDirect or AllowFromRemote."`
-	BlacklistEncryptionPublicKeys []string `comment:"List of public keys from which network traffic is always rejected,\nregardless of the whitelist, AllowFromDirect or AllowFromRemote."`
+type MulticastInterfaceConfig struct {
+	Regex    string
+	Beacon   bool
+	Listen   bool
+	Port     uint16 `json:",omitempty"`
+	Priority uint64 `json:",omitempty"` // really uint8, but gobind won't export it
+	Password string
 }
 
-// TunnelRouting contains the crypto-key routing tables for tunneling
-type TunnelRouting struct {
-	Enable           bool              `comment:"Enable or disable tunnel routing."`
-	IPv6Destinations map[string]string `comment:"IPv6 CIDR subnets, mapped to the EncryptionPublicKey to which they\nshould be routed, e.g. { \"aaaa:bbbb:cccc::/e\": \"boxpubkey\", ... }"`
-	IPv6Sources      []string          `comment:"Optional IPv6 source subnets which are allowed to be tunnelled in\naddition to this node's Yggdrasil address/subnet. If not\nspecified, only traffic originating from this node's Yggdrasil\naddress or subnet will be tunnelled."`
-	IPv4Destinations map[string]string `comment:"IPv4 CIDR subnets, mapped to the EncryptionPublicKey to which they\nshould be routed, e.g. { \"a.b.c.d/e\": \"boxpubkey\", ... }"`
-	IPv4Sources      []string          `comment:"IPv4 source subnets which are allowed to be tunnelled. Unlike for\nIPv6, this option is required for bridging IPv4 traffic. Only\ntraffic with a source matching these subnets will be tunnelled."`
-}
-
-// SwitchOptions contains tuning options for the switch
-type SwitchOptions struct {
-	MaxTotalQueueSize uint64 `comment:"Maximum size of all switch queues combined (in bytes)."`
-}
-
-// Generates default configuration. This is used when outputting the -genconf
-// parameter and also when using -autoconf. The isAutoconf flag is used to
-// determine whether the operating system should select a free port by itself
-// (which guarantees that there will not be a conflict with any other services)
-// or whether to generate a random port number. The only side effect of setting
-// isAutoconf is that the TCP and UDP ports will likely end up with different
-// port numbers.
+// Generates default configuration and returns a pointer to the resulting
+// NodeConfig. This is used when outputting the -genconf parameter and also when
+// using -autoconf.
 func GenerateConfig() *NodeConfig {
-	// Generate encryption keys.
-	bpub, bpriv := crypto.NewBoxKeys()
-	spub, spriv := crypto.NewSigKeys()
+	// Get the defaults for the platform.
+	defaults := GetDefaults()
 	// Create a node configuration and populate it.
-	cfg := NodeConfig{}
+	cfg := new(NodeConfig)
+	cfg.NewPrivateKey()
 	cfg.Listen = []string{}
-	cfg.AdminListen = defaults.GetDefaults().DefaultAdminListen
-	cfg.EncryptionPublicKey = hex.EncodeToString(bpub[:])
-	cfg.EncryptionPrivateKey = hex.EncodeToString(bpriv[:])
-	cfg.SigningPublicKey = hex.EncodeToString(spub[:])
-	cfg.SigningPrivateKey = hex.EncodeToString(spriv[:])
+	cfg.AdminListen = defaults.DefaultAdminListen
 	cfg.Peers = []string{}
 	cfg.InterfacePeers = map[string][]string{}
-	cfg.AllowedEncryptionPublicKeys = []string{}
-	cfg.MulticastInterfaces = []string{".*"}
-	cfg.IfName = defaults.GetDefaults().DefaultIfName
-	cfg.IfMTU = defaults.GetDefaults().DefaultIfMTU
-	cfg.IfTAPMode = defaults.GetDefaults().DefaultIfTAPMode
-	cfg.SessionFirewall.Enable = false
-	cfg.SessionFirewall.AllowFromDirect = true
-	cfg.SessionFirewall.AllowFromRemote = true
-	cfg.SessionFirewall.AlwaysAllowOutbound = true
-	cfg.SwitchOptions.MaxTotalQueueSize = 4 * 1024 * 1024
+	cfg.AllowedPublicKeys = []string{}
+	cfg.MulticastInterfaces = defaults.DefaultMulticastInterfaces
+	cfg.IfName = defaults.DefaultIfName
+	cfg.IfMTU = defaults.DefaultIfMTU
 	cfg.NodeInfoPrivacy = false
-
-	return &cfg
+	if err := cfg.postprocessConfig(); err != nil {
+		panic(err)
+	}
+	return cfg
+}
+
+func (cfg *NodeConfig) ReadFrom(r io.Reader) (int64, error) {
+	conf, err := io.ReadAll(r)
+	if err != nil {
+		return 0, err
+	}
+	n := int64(len(conf))
+	// If there's a byte order mark - which Windows 10 is now incredibly fond of
+	// throwing everywhere when it's converting things into UTF-16 for the hell
+	// of it - remove it and decode back down into UTF-8. This is necessary
+	// because hjson doesn't know what to do with UTF-16 and will panic
+	if bytes.Equal(conf[0:2], []byte{0xFF, 0xFE}) ||
+		bytes.Equal(conf[0:2], []byte{0xFE, 0xFF}) {
+		utf := unicode.UTF16(unicode.BigEndian, unicode.UseBOM)
+		decoder := utf.NewDecoder()
+		conf, err = decoder.Bytes(conf)
+		if err != nil {
+			return n, err
+		}
+	}
+	// Generate a new configuration - this gives us a set of sane defaults -
+	// then parse the configuration we loaded above on top of it. The effect
+	// of this is that any configuration item that is missing from the provided
+	// configuration will use a sane default.
+	*cfg = *GenerateConfig()
+	if err := cfg.UnmarshalHJSON(conf); err != nil {
+		return n, err
+	}
+	return n, nil
+}
+
+func (cfg *NodeConfig) UnmarshalHJSON(b []byte) error {
+	if err := hjson.Unmarshal(b, cfg); err != nil {
+		return err
+	}
+	return cfg.postprocessConfig()
+}
+
+func (cfg *NodeConfig) postprocessConfig() error {
+	if cfg.PrivateKeyPath != "" {
+		cfg.PrivateKey = nil
+		f, err := os.ReadFile(cfg.PrivateKeyPath)
+		if err != nil {
+			return err
+		}
+		if err := cfg.UnmarshalPEMPrivateKey(f); err != nil {
+			return err
+		}
+	}
+	switch {
+	case cfg.Certificate == nil:
+		// No self-signed certificate has been generated yet.
+		fallthrough
+	case !bytes.Equal(cfg.Certificate.PrivateKey.(ed25519.PrivateKey), cfg.PrivateKey):
+		// A self-signed certificate was generated but the private
+		// key has changed since then, possibly because a new config
+		// was parsed.
+		if err := cfg.GenerateSelfSignedCertificate(); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// RFC5280 section 4.1.2.5
+var notAfterNeverExpires = time.Date(9999, time.December, 31, 23, 59, 59, 0, time.UTC)
+
+func (cfg *NodeConfig) GenerateSelfSignedCertificate() error {
+	key, err := cfg.MarshalPEMPrivateKey()
+	if err != nil {
+		return err
+	}
+	cert, err := cfg.MarshalPEMCertificate()
+	if err != nil {
+		return err
+	}
+	tlsCert, err := tls.X509KeyPair(cert, key)
+	if err != nil {
+		return err
+	}
+	cfg.Certificate = &tlsCert
+	return nil
+}
+
+func (cfg *NodeConfig) MarshalPEMCertificate() ([]byte, error) {
+	privateKey := ed25519.PrivateKey(cfg.PrivateKey)
+	publicKey := privateKey.Public().(ed25519.PublicKey)
+
+	cert := &x509.Certificate{
+		SerialNumber: big.NewInt(1),
+		Subject: pkix.Name{
+			CommonName: hex.EncodeToString(publicKey),
+		},
+		NotBefore:             time.Now(),
+		NotAfter:              notAfterNeverExpires,
+		KeyUsage:              x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
+		ExtKeyUsage:           []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
+		BasicConstraintsValid: true,
+	}
+
+	certbytes, err := x509.CreateCertificate(rand.Reader, cert, cert, publicKey, privateKey)
+	if err != nil {
+		return nil, err
+	}
+
+	block := &pem.Block{
+		Type:  "CERTIFICATE",
+		Bytes: certbytes,
+	}
+	return pem.EncodeToMemory(block), nil
+}
+
+func (cfg *NodeConfig) NewPrivateKey() {
+	_, spriv, err := ed25519.GenerateKey(nil)
+	if err != nil {
+		panic(err)
+	}
+	cfg.PrivateKey = KeyBytes(spriv)
+}
+
+func (cfg *NodeConfig) MarshalPEMPrivateKey() ([]byte, error) {
+	b, err := x509.MarshalPKCS8PrivateKey(ed25519.PrivateKey(cfg.PrivateKey))
+	if err != nil {
+		return nil, fmt.Errorf("failed to marshal PKCS8 key: %w", err)
+	}
+	block := &pem.Block{
+		Type:  "PRIVATE KEY",
+		Bytes: b,
+	}
+	return pem.EncodeToMemory(block), nil
+}
+
+func (cfg *NodeConfig) UnmarshalPEMPrivateKey(b []byte) error {
+	p, _ := pem.Decode(b)
+	if p == nil {
+		return fmt.Errorf("failed to parse PEM file")
+	}
+	if p.Type != "PRIVATE KEY" {
+		return fmt.Errorf("unexpected PEM type %q", p.Type)
+	}
+	k, err := x509.ParsePKCS8PrivateKey(p.Bytes)
+	if err != nil {
+		return fmt.Errorf("failed to unmarshal PKCS8 key: %w", err)
+	}
+	key, ok := k.(ed25519.PrivateKey)
+	if !ok {
+		return fmt.Errorf("private key must be ed25519 key")
+	}
+	if len(key) != ed25519.PrivateKeySize {
+		return fmt.Errorf("unexpected ed25519 private key length")
+	}
+	cfg.PrivateKey = KeyBytes(key)
+	return nil
+}
+
+type KeyBytes []byte
+
+func (k KeyBytes) MarshalJSON() ([]byte, error) {
+	return json.Marshal(hex.EncodeToString(k))
+}
+
+func (k *KeyBytes) UnmarshalJSON(b []byte) error {
+	var s string
+	var err error
+	if err = json.Unmarshal(b, &s); err != nil {
+		return err
+	}
+	*k, err = hex.DecodeString(s)
+	return err
 }

src/config/config_test.go

@@ -0,0 +1,54 @@
+package config
+
+import (
+	"testing"
+)
+
+func TestConfig_Keys(t *testing.T) {
+	/*
+		var nodeConfig NodeConfig
+		nodeConfig.NewKeys()
+
+		publicKey1, err := hex.DecodeString(nodeConfig.PublicKey)
+
+		if err != nil {
+			t.Fatal("can not decode generated public key")
+		}
+
+		if len(publicKey1) == 0 {
+			t.Fatal("empty public key generated")
+		}
+
+		privateKey1, err := hex.DecodeString(nodeConfig.PrivateKey)
+
+		if err != nil {
+			t.Fatal("can not decode generated private key")
+		}
+
+		if len(privateKey1) == 0 {
+			t.Fatal("empty private key generated")
+		}
+
+		nodeConfig.NewKeys()
+
+		publicKey2, err := hex.DecodeString(nodeConfig.PublicKey)
+
+		if err != nil {
+			t.Fatal("can not decode generated public key")
+		}
+
+		if bytes.Equal(publicKey2, publicKey1) {
+			t.Fatal("same public key generated")
+		}
+
+		privateKey2, err := hex.DecodeString(nodeConfig.PrivateKey)
+
+		if err != nil {
+			t.Fatal("can not decode generated private key")
+		}
+
+		if bytes.Equal(privateKey2, privateKey1) {
+			t.Fatal("same private key generated")
+		}
+	*/
+}

src/config/defaults.go

@@ -0,0 +1,34 @@
+package config
+
+var defaultConfig = ""      // LDFLAGS='-X github.com/yggdrasil-network/yggdrasil-go/src/config.defaultConfig=/path/to/config
+var defaultAdminListen = "" // LDFLAGS='-X github.com/yggdrasil-network/yggdrasil-go/src/config.defaultAdminListen=unix://path/to/sock'
+
+// Defines which parameters are expected by default for configuration on a
+// specific platform. These values are populated in the relevant defaults_*.go
+// for the platform being targeted. They must be set.
+type platformDefaultParameters struct {
+	// Admin socket
+	DefaultAdminListen string
+
+	// Configuration (used for yggdrasilctl)
+	DefaultConfigFile string
+
+	// Multicast interfaces
+	DefaultMulticastInterfaces []MulticastInterfaceConfig
+
+	// TUN
+	MaximumIfMTU  uint64
+	DefaultIfMTU  uint64
+	DefaultIfName string
+}
+
+func GetDefaults() platformDefaultParameters {
+	defaults := getDefaults()
+	if defaultConfig != "" {
+		defaults.DefaultConfigFile = defaultConfig
+	}
+	if defaultAdminListen != "" {
+		defaults.DefaultAdminListen = defaultAdminListen
+	}
+	return defaults
+}

src/config/defaults_darwin.go

@@ -0,0 +1,28 @@
+//go:build darwin
+// +build darwin
+
+package config
+
+// Sane defaults for the macOS/Darwin platform. The "default" options may be
+// may be replaced by the running configuration.
+func getDefaults() platformDefaultParameters {
+	return platformDefaultParameters{
+		// Admin
+		DefaultAdminListen: "unix:///var/run/yggdrasil.sock",
+
+		// Configuration (used for yggdrasilctl)
+		DefaultConfigFile: "/etc/yggdrasil.conf",
+
+		// Multicast interfaces
+		DefaultMulticastInterfaces: []MulticastInterfaceConfig{
+			{Regex: "en.*", Beacon: true, Listen: true},
+			{Regex: "bridge.*", Beacon: true, Listen: true},
+			{Regex: "awdl0", Beacon: false, Listen: false},
+		},
+
+		// TUN
+		MaximumIfMTU:  65535,
+		DefaultIfMTU:  65535,
+		DefaultIfName: "auto",
+	}
+}

src/config/defaults_freebsd.go

@@ -0,0 +1,26 @@
+//go:build freebsd
+// +build freebsd
+
+package config
+
+// Sane defaults for the BSD platforms. The "default" options may be
+// may be replaced by the running configuration.
+func getDefaults() platformDefaultParameters {
+	return platformDefaultParameters{
+		// Admin
+		DefaultAdminListen: "unix:///var/run/yggdrasil.sock",
+
+		// Configuration (used for yggdrasilctl)
+		DefaultConfigFile: "/usr/local/etc/yggdrasil.conf",
+
+		// Multicast interfaces
+		DefaultMulticastInterfaces: []MulticastInterfaceConfig{
+			{Regex: ".*", Beacon: true, Listen: true},
+		},
+
+		// TUN
+		MaximumIfMTU:  32767,
+		DefaultIfMTU:  32767,
+		DefaultIfName: "/dev/tun0",
+	}
+}

src/config/defaults_linux.go

@@ -1,10 +1,11 @@
+//go:build linux
 // +build linux
 
-package defaults
+package config
 
 // Sane defaults for the Linux platform. The "default" options may be
 // may be replaced by the running configuration.
-func GetDefaults() platformDefaultParameters {
+func getDefaults() platformDefaultParameters {
 	return platformDefaultParameters{
 		// Admin
 		DefaultAdminListen: "unix:///var/run/yggdrasil.sock",
@@ -12,10 +13,14 @@ func GetDefaults() platformDefaultParameters {
 		// Configuration (used for yggdrasilctl)
 		DefaultConfigFile: "/etc/yggdrasil.conf",
 
-		// TUN/TAP
-		MaximumIfMTU:     65535,
-		DefaultIfMTU:     65535,
-		DefaultIfName:    "auto",
-		DefaultIfTAPMode: false,
+		// Multicast interfaces
+		DefaultMulticastInterfaces: []MulticastInterfaceConfig{
+			{Regex: ".*", Beacon: true, Listen: true},
+		},
+
+		// TUN
+		MaximumIfMTU:  65535,
+		DefaultIfMTU:  65535,
+		DefaultIfName: "auto",
 	}
 }

src/config/defaults_openbsd.go

@@ -1,10 +1,11 @@
+//go:build openbsd
 // +build openbsd
 
-package defaults
+package config
 
 // Sane defaults for the BSD platforms. The "default" options may be
 // may be replaced by the running configuration.
-func GetDefaults() platformDefaultParameters {
+func getDefaults() platformDefaultParameters {
 	return platformDefaultParameters{
 		// Admin
 		DefaultAdminListen: "unix:///var/run/yggdrasil.sock",
@@ -12,10 +13,14 @@ func GetDefaults() platformDefaultParameters {
 		// Configuration (used for yggdrasilctl)
 		DefaultConfigFile: "/etc/yggdrasil.conf",
 
-		// TUN/TAP
-		MaximumIfMTU:     16384,
-		DefaultIfMTU:     16384,
-		DefaultIfName:    "/dev/tap0",
-		DefaultIfTAPMode: true,
+		// Multicast interfaces
+		DefaultMulticastInterfaces: []MulticastInterfaceConfig{
+			{Regex: ".*", Beacon: true, Listen: true},
+		},
+
+		// TUN
+		MaximumIfMTU:  16384,
+		DefaultIfMTU:  16384,
+		DefaultIfName: "tun0",
 	}
 }

src/config/defaults_other.go

@@ -0,0 +1,26 @@
+//go:build !linux && !darwin && !windows && !openbsd && !freebsd
+// +build !linux,!darwin,!windows,!openbsd,!freebsd
+
+package config
+
+// Sane defaults for the other platforms. The "default" options may be
+// may be replaced by the running configuration.
+func getDefaults() platformDefaultParameters {
+	return platformDefaultParameters{
+		// Admin
+		DefaultAdminListen: "tcp://localhost:9001",
+
+		// Configuration (used for yggdrasilctl)
+		DefaultConfigFile: "/etc/yggdrasil.conf",
+
+		// Multicast interfaces
+		DefaultMulticastInterfaces: []MulticastInterfaceConfig{
+			{Regex: ".*", Beacon: true, Listen: true},
+		},
+
+		// TUN
+		MaximumIfMTU:  65535,
+		DefaultIfMTU:  65535,
+		DefaultIfName: "none",
+	}
+}

src/config/defaults_windows.go

@@ -1,10 +1,11 @@
+//go:build windows
 // +build windows
 
-package defaults
+package config
 
 // Sane defaults for the Windows platform. The "default" options may be
 // may be replaced by the running configuration.
-func GetDefaults() platformDefaultParameters {
+func getDefaults() platformDefaultParameters {
 	return platformDefaultParameters{
 		// Admin
 		DefaultAdminListen: "tcp://localhost:9001",
@@ -12,10 +13,14 @@ func GetDefaults() platformDefaultParameters {
 		// Configuration (used for yggdrasilctl)
 		DefaultConfigFile: "C:\\Program Files\\Yggdrasil\\yggdrasil.conf",
 
-		// TUN/TAP
-		MaximumIfMTU:     65535,
-		DefaultIfMTU:     65535,
-		DefaultIfName:    "auto",
-		DefaultIfTAPMode: true,
+		// Multicast interfaces
+		DefaultMulticastInterfaces: []MulticastInterfaceConfig{
+			{Regex: ".*", Beacon: true, Listen: true},
+		},
+
+		// TUN
+		MaximumIfMTU:  65535,
+		DefaultIfMTU:  65535,
+		DefaultIfName: "Yggdrasil",
 	}
 }

src/core/api.go

@@ -0,0 +1,265 @@
+package core
+
+import (
+	"crypto/ed25519"
+	"encoding/json"
+	"net"
+	"net/url"
+	"sync/atomic"
+	"time"
+
+	"github.com/Arceliar/phony"
+
+	"github.com/Arceliar/ironwood/network"
+	"github.com/yggdrasil-network/yggdrasil-go/src/address"
+)
+
+type SelfInfo struct {
+	Key            ed25519.PublicKey
+	RoutingEntries uint64
+}
+
+type PeerInfo struct {
+	URI           string
+	Up            bool
+	Inbound       bool
+	LastError     error
+	LastErrorTime time.Time
+	Key           ed25519.PublicKey
+	Root          ed25519.PublicKey
+	Coords        []uint64
+	Port          uint64
+	Priority      uint8
+	Cost          uint64
+	RXBytes       uint64
+	TXBytes       uint64
+	RXRate        uint64
+	TXRate        uint64
+	Uptime        time.Duration
+	Latency       time.Duration
+}
+
+type TreeEntryInfo struct {
+	Key      ed25519.PublicKey
+	Parent   ed25519.PublicKey
+	Sequence uint64
+	//Port uint64
+	//Rest uint64
+}
+
+type PathEntryInfo struct {
+	Key      ed25519.PublicKey
+	Path     []uint64
+	Sequence uint64
+}
+
+type SessionInfo struct {
+	Key     ed25519.PublicKey
+	RXBytes uint64
+	TXBytes uint64
+	Uptime  time.Duration
+}
+
+func (c *Core) GetSelf() SelfInfo {
+	var self SelfInfo
+	s := c.PacketConn.PacketConn.Debug.GetSelf()
+	self.Key = s.Key
+	self.RoutingEntries = s.RoutingEntries
+	return self
+}
+
+func (c *Core) GetPeers() []PeerInfo {
+	peers := []PeerInfo{}
+	conns := map[net.Conn]network.DebugPeerInfo{}
+	iwpeers := c.PacketConn.PacketConn.Debug.GetPeers()
+	for _, p := range iwpeers {
+		conns[p.Conn] = p
+	}
+
+	phony.Block(&c.links, func() {
+		for info, state := range c.links._links {
+			var peerinfo PeerInfo
+			var conn net.Conn
+			peerinfo.URI = info.uri
+			peerinfo.LastError = state._err
+			peerinfo.LastErrorTime = state._errtime
+			if c := state._conn; c != nil {
+				conn = c
+				peerinfo.Up = true
+				peerinfo.Inbound = state.linkType == linkTypeIncoming
+				peerinfo.RXBytes = atomic.LoadUint64(&c.rx)
+				peerinfo.TXBytes = atomic.LoadUint64(&c.tx)
+				peerinfo.RXRate = atomic.LoadUint64(&c.rxrate)
+				peerinfo.TXRate = atomic.LoadUint64(&c.txrate)
+				peerinfo.Uptime = time.Since(c.up)
+			}
+			if p, ok := conns[conn]; ok {
+				peerinfo.Key = p.Key
+				peerinfo.Root = p.Root
+				peerinfo.Port = p.Port
+				peerinfo.Priority = p.Priority
+				peerinfo.Latency = p.Latency
+				peerinfo.Cost = p.Cost
+			}
+			peers = append(peers, peerinfo)
+		}
+	})
+
+	return peers
+}
+
+func (c *Core) GetTree() []TreeEntryInfo {
+	var trees []TreeEntryInfo
+	ts := c.PacketConn.PacketConn.Debug.GetTree()
+	for _, t := range ts {
+		var info TreeEntryInfo
+		info.Key = t.Key
+		info.Parent = t.Parent
+		info.Sequence = t.Sequence
+		//info.Port = d.Port
+		//info.Rest = d.Rest
+		trees = append(trees, info)
+	}
+	return trees
+}
+
+func (c *Core) GetPaths() []PathEntryInfo {
+	var paths []PathEntryInfo
+	ps := c.PacketConn.PacketConn.Debug.GetPaths()
+	for _, p := range ps {
+		var info PathEntryInfo
+		info.Key = p.Key
+		info.Sequence = p.Sequence
+		info.Path = p.Path
+		paths = append(paths, info)
+	}
+	return paths
+}
+
+func (c *Core) GetSessions() []SessionInfo {
+	var sessions []SessionInfo
+	ss := c.PacketConn.Debug.GetSessions()
+	for _, s := range ss {
+		var info SessionInfo
+		info.Key = s.Key
+		info.RXBytes = s.RX
+		info.TXBytes = s.TX
+		info.Uptime = s.Uptime
+		sessions = append(sessions, info)
+	}
+	return sessions
+}
+
+// Listen starts a new listener (either TCP or TLS). The input should be a url.URL
+// parsed from a string of the form e.g. "tcp://a.b.c.d:e". In the case of a
+// link-local address, the interface should be provided as the second argument.
+func (c *Core) Listen(u *url.URL, sintf string) (*Listener, error) {
+	return c.links.listen(u, sintf, false)
+}
+
+// ListenLocal starts a listener, like the Listen function, but is used for
+// more trustworthy situations where you want to ignore AllowedPublicKeys, i.e.
+// with multicast listeners.
+func (c *Core) ListenLocal(u *url.URL, sintf string) (*Listener, error) {
+	return c.links.listen(u, sintf, true)
+}
+
+// Address gets the IPv6 address of the Yggdrasil node. This is always a /128
+// address. The IPv6 address is only relevant when the node is operating as an
+// IP router and often is meaningless when embedded into an application, unless
+// that application also implements either VPN functionality or deals with IP
+// packets specifically.
+func (c *Core) Address() net.IP {
+	addr := net.IP(address.AddrForKey(c.public)[:])
+	return addr
+}
+
+// Subnet gets the routed IPv6 subnet of the Yggdrasil node. This is always a
+// /64 subnet. The IPv6 subnet is only relevant when the node is operating as an
+// IP router and often is meaningless when embedded into an application, unless
+// that application also implements either VPN functionality or deals with IP
+// packets specifically.
+func (c *Core) Subnet() net.IPNet {
+	subnet := address.SubnetForKey(c.public)[:]
+	subnet = append(subnet, 0, 0, 0, 0, 0, 0, 0, 0)
+	return net.IPNet{IP: subnet, Mask: net.CIDRMask(64, 128)}
+}
+
+// SetLogger sets the output logger of the Yggdrasil node after startup. This
+// may be useful if you want to redirect the output later. Note that this
+// expects a Logger from the github.com/gologme/log package and not from Go's
+// built-in log package.
+func (c *Core) SetLogger(log Logger) {
+	c.log = log
+}
+
+// AddPeer adds a peer. This should be specified in the peer URI format, e.g.:
+//
+//	tcp://a.b.c.d:e
+//	socks://a.b.c.d:e/f.g.h.i:j
+//
+// This adds the peer to the peer list, so that they will be called again if the
+// connection drops.
+func (c *Core) AddPeer(u *url.URL, sintf string) error {
+	return c.links.add(u, sintf, linkTypePersistent)
+}
+
+// RemovePeer removes a peer. The peer should be specified in URI format, see AddPeer.
+// The peer is not disconnected immediately.
+func (c *Core) RemovePeer(u *url.URL, sintf string) error {
+	return c.links.remove(u, sintf, linkTypePersistent)
+}
+
+// CallPeer calls a peer once. This should be specified in the peer URI format,
+// e.g.:
+//
+//	tcp://a.b.c.d:e
+//	socks://a.b.c.d:e/f.g.h.i:j
+//
+// This does not add the peer to the peer list, so if the connection drops, the
+// peer will not be called again automatically.
+func (c *Core) CallPeer(u *url.URL, sintf string) error {
+	return c.links.add(u, sintf, linkTypeEphemeral)
+}
+
+func (c *Core) PublicKey() ed25519.PublicKey {
+	return c.public
+}
+
+// Hack to get the admin stuff working, TODO something cleaner
+
+type AddHandler interface {
+	AddHandler(name, desc string, args []string, handlerfunc AddHandlerFunc) error
+}
+
+type AddHandlerFunc func(json.RawMessage) (interface{}, error)
+
+// SetAdmin must be called after Init and before Start.
+// It sets the admin handler for NodeInfo and the Debug admin functions.
+func (c *Core) SetAdmin(a AddHandler) error {
+	if err := a.AddHandler(
+		"getNodeInfo", "Request nodeinfo from a remote node by its public key", []string{"key"},
+		c.proto.nodeinfo.nodeInfoAdminHandler,
+	); err != nil {
+		return err
+	}
+	if err := a.AddHandler(
+		"debug_remoteGetSelf", "Debug use only", []string{"key"},
+		c.proto.getSelfHandler,
+	); err != nil {
+		return err
+	}
+	if err := a.AddHandler(
+		"debug_remoteGetPeers", "Debug use only", []string{"key"},
+		c.proto.getPeersHandler,
+	); err != nil {
+		return err
+	}
+	if err := a.AddHandler(
+		"debug_remoteGetTree", "Debug use only", []string{"key"},
+		c.proto.getTreeHandler,
+	); err != nil {
+		return err
+	}
+	return nil
+}

src/core/core.go

@@ -0,0 +1,252 @@
+package core
+
+import (
+	"context"
+	"crypto/ed25519"
+	"crypto/tls"
+	"fmt"
+	"io"
+	"net"
+	"net/url"
+	"time"
+
+	iwe "github.com/Arceliar/ironwood/encrypted"
+	iwn "github.com/Arceliar/ironwood/network"
+	iwt "github.com/Arceliar/ironwood/types"
+	"github.com/Arceliar/phony"
+	"github.com/gologme/log"
+
+	"github.com/yggdrasil-network/yggdrasil-go/src/address"
+	"github.com/yggdrasil-network/yggdrasil-go/src/version"
+)
+
+// The Core object represents the Yggdrasil node. You should create a Core
+// object for each Yggdrasil node you plan to run.
+type Core struct {
+	// This is the main data structure that holds everything else for a node
+	// We're going to keep our own copy of the provided config - that way we can
+	// guarantee that it will be covered by the mutex
+	phony.Inbox
+	*iwe.PacketConn
+	ctx          context.Context
+	cancel       context.CancelFunc
+	secret       ed25519.PrivateKey
+	public       ed25519.PublicKey
+	links        links
+	proto        protoHandler
+	log          Logger
+	addPeerTimer *time.Timer
+	config       struct {
+		tls *tls.Config // immutable after startup
+		//_peers             map[Peer]*linkInfo         // configurable after startup
+		_listeners         map[ListenAddress]struct{} // configurable after startup
+		peerFilter         func(ip net.IP) bool       // immutable after startup
+		nodeinfo           NodeInfo                   // immutable after startup
+		nodeinfoPrivacy    NodeInfoPrivacy            // immutable after startup
+		_allowedPublicKeys map[[32]byte]struct{}      // configurable after startup
+	}
+	pathNotify func(ed25519.PublicKey)
+}
+
+func New(cert *tls.Certificate, logger Logger, opts ...SetupOption) (*Core, error) {
+	c := &Core{
+		log: logger,
+	}
+	c.ctx, c.cancel = context.WithCancel(context.Background())
+	if c.log == nil {
+		c.log = log.New(io.Discard, "", 0)
+	}
+
+	if name := version.BuildName(); name != "unknown" {
+		c.log.Infoln("Build name:", name)
+	}
+	if version := version.BuildVersion(); version != "unknown" {
+		c.log.Infoln("Build version:", version)
+	}
+
+	var err error
+	c.config._listeners = map[ListenAddress]struct{}{}
+	c.config._allowedPublicKeys = map[[32]byte]struct{}{}
+	for _, opt := range opts {
+		switch opt.(type) {
+		case Peer, ListenAddress:
+			// We can't do peers yet as the links aren't set up.
+			continue
+		default:
+			if err = c._applyOption(opt); err != nil {
+				return nil, fmt.Errorf("failed to apply configuration option %T: %w", opt, err)
+			}
+		}
+	}
+	if cert == nil || cert.PrivateKey == nil {
+		return nil, fmt.Errorf("no private key supplied")
+	}
+	var ok bool
+	if c.secret, ok = cert.PrivateKey.(ed25519.PrivateKey); !ok {
+		return nil, fmt.Errorf("private key must be ed25519")
+	}
+	if len(c.secret) != ed25519.PrivateKeySize {
+		return nil, fmt.Errorf("private key is incorrect length")
+	}
+	c.public = c.secret.Public().(ed25519.PublicKey)
+
+	if c.config.tls, err = c.generateTLSConfig(cert); err != nil {
+		return nil, fmt.Errorf("error generating TLS config: %w", err)
+	}
+	keyXform := func(key ed25519.PublicKey) ed25519.PublicKey {
+		return address.SubnetForKey(key).GetKey()
+	}
+	if c.PacketConn, err = iwe.NewPacketConn(
+		c.secret,
+		iwn.WithBloomTransform(keyXform),
+		iwn.WithPeerMaxMessageSize(65535*2),
+		iwn.WithPathNotify(c.doPathNotify),
+	); err != nil {
+		return nil, fmt.Errorf("error creating encryption: %w", err)
+	}
+	c.proto.init(c)
+	if err := c.links.init(c); err != nil {
+		return nil, fmt.Errorf("error initialising links: %w", err)
+	}
+	for _, opt := range opts {
+		switch opt.(type) {
+		case Peer, ListenAddress:
+			// Now do the peers and listeners.
+			if err = c._applyOption(opt); err != nil {
+				return nil, fmt.Errorf("failed to apply configuration option %T: %w", opt, err)
+			}
+		default:
+			continue
+		}
+	}
+	if err := c.proto.nodeinfo.setNodeInfo(c.config.nodeinfo, bool(c.config.nodeinfoPrivacy)); err != nil {
+		return nil, fmt.Errorf("error setting node info: %w", err)
+	}
+	for listenaddr := range c.config._listeners {
+		u, err := url.Parse(string(listenaddr))
+		if err != nil {
+			c.log.Errorf("Invalid listener URI %q specified, ignoring\n", listenaddr)
+			continue
+		}
+		if _, err = c.links.listen(u, "", false); err != nil {
+			c.log.Errorf("Failed to start listener %q: %s\n", listenaddr, err)
+		}
+	}
+	return c, nil
+}
+
+func (c *Core) RetryPeersNow() {
+	phony.Block(&c.links, func() {
+		for _, l := range c.links._links {
+			select {
+			case l.kick <- struct{}{}:
+			default:
+			}
+		}
+	})
+}
+
+// Stop shuts down the Yggdrasil node.
+func (c *Core) Stop() {
+	phony.Block(c, func() {
+		c.log.Infoln("Stopping...")
+		_ = c._close()
+		c.log.Infoln("Stopped")
+	})
+}
+
+// This function is unsafe and should only be ran by the core actor.
+func (c *Core) _close() error {
+	c.cancel()
+	c.links.shutdown()
+	err := c.PacketConn.Close()
+	if c.addPeerTimer != nil {
+		c.addPeerTimer.Stop()
+		c.addPeerTimer = nil
+	}
+	return err
+}
+
+func (c *Core) MTU() uint64 {
+	const sessionTypeOverhead = 1
+	MTU := c.PacketConn.MTU() - sessionTypeOverhead
+	if MTU > 65535 {
+		MTU = 65535
+	}
+	return MTU
+}
+
+func (c *Core) ReadFrom(p []byte) (n int, from net.Addr, err error) {
+	buf := allocBytes(int(c.PacketConn.MTU()))
+	defer freeBytes(buf)
+	for {
+		bs := buf
+		n, from, err = c.PacketConn.ReadFrom(bs)
+		if err != nil {
+			return 0, from, err
+		}
+		if n == 0 {
+			continue
+		}
+		switch bs[0] {
+		case typeSessionTraffic:
+			// This is what we want to handle here
+		case typeSessionProto:
+			var key keyArray
+			copy(key[:], from.(iwt.Addr))
+			data := append([]byte(nil), bs[1:n]...)
+			c.proto.handleProto(nil, key, data)
+			continue
+		default:
+			continue
+		}
+		bs = bs[1:n]
+		copy(p, bs)
+		if len(p) < len(bs) {
+			n = len(p)
+		} else {
+			n = len(bs)
+		}
+		return
+	}
+}
+
+func (c *Core) WriteTo(p []byte, addr net.Addr) (n int, err error) {
+	buf := allocBytes(0)
+	defer func() { freeBytes(buf) }()
+	buf = append(buf, typeSessionTraffic)
+	buf = append(buf, p...)
+	n, err = c.PacketConn.WriteTo(buf, addr)
+	if n > 0 {
+		n -= 1
+	}
+	return
+}
+
+func (c *Core) doPathNotify(key ed25519.PublicKey) {
+	c.Act(nil, func() {
+		if c.pathNotify != nil {
+			c.pathNotify(key)
+		}
+	})
+}
+
+func (c *Core) SetPathNotify(notify func(ed25519.PublicKey)) {
+	c.Act(nil, func() {
+		c.pathNotify = notify
+	})
+}
+
+type Logger interface {
+	Printf(string, ...interface{})
+	Println(...interface{})
+	Infof(string, ...interface{})
+	Infoln(...interface{})
+	Warnf(string, ...interface{})
+	Warnln(...interface{})
+	Errorf(string, ...interface{})
+	Errorln(...interface{})
+	Debugf(string, ...interface{})
+	Debugln(...interface{})
+	Traceln(...interface{})
+}

src/core/core_test.go

@@ -0,0 +1,290 @@
+package core
+
+import (
+	"bytes"
+	"crypto/rand"
+	"net/url"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/gologme/log"
+	"github.com/yggdrasil-network/yggdrasil-go/src/config"
+)
+
+// GetLoggerWithPrefix creates a new logger instance with prefix.
+// If verbose is set to true, three log levels are enabled: "info", "warn", "error".
+func GetLoggerWithPrefix(prefix string, verbose bool) *log.Logger {
+	l := log.New(os.Stderr, prefix, log.Flags())
+	if !verbose {
+		return l
+	}
+	l.EnableLevel("info")
+	l.EnableLevel("warn")
+	l.EnableLevel("error")
+	return l
+}
+
+func require_NoError(t *testing.T, err error) {
+	t.Helper()
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func require_Equal[T comparable](t *testing.T, a, b T) {
+	t.Helper()
+	if a != b {
+		t.Fatalf("%v != %v", a, b)
+	}
+}
+
+func require_True(t *testing.T, a bool) {
+	t.Helper()
+	if !a {
+		t.Fatal("expected true")
+	}
+}
+
+// CreateAndConnectTwo creates two nodes. nodeB connects to nodeA.
+// Verbosity flag is passed to logger.
+func CreateAndConnectTwo(t testing.TB, verbose bool) (nodeA *Core, nodeB *Core) {
+	var err error
+
+	cfgA, cfgB := config.GenerateConfig(), config.GenerateConfig()
+	if err = cfgA.GenerateSelfSignedCertificate(); err != nil {
+		t.Fatal(err)
+	}
+	if err = cfgB.GenerateSelfSignedCertificate(); err != nil {
+		t.Fatal(err)
+	}
+
+	logger := GetLoggerWithPrefix("", false)
+	logger.EnableLevel("debug")
+
+	if nodeA, err = New(cfgA.Certificate, logger); err != nil {
+		t.Fatal(err)
+	}
+	if nodeB, err = New(cfgB.Certificate, logger); err != nil {
+		t.Fatal(err)
+	}
+
+	nodeAListenURL, err := url.Parse("tcp://localhost:0")
+	if err != nil {
+		t.Fatal(err)
+	}
+	nodeAListener, err := nodeA.Listen(nodeAListenURL, "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	nodeAURL, err := url.Parse("tcp://" + nodeAListener.Addr().String())
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err = nodeB.CallPeer(nodeAURL, ""); err != nil {
+		t.Fatal(err)
+	}
+
+	time.Sleep(100 * time.Millisecond)
+
+	if l := len(nodeA.GetPeers()); l != 1 {
+		t.Fatal("unexpected number of peers", l)
+	}
+	if l := len(nodeB.GetPeers()); l != 1 {
+		t.Fatal("unexpected number of peers", l)
+	}
+
+	return nodeA, nodeB
+}
+
+// WaitConnected blocks until either nodes negotiated DHT or 5 seconds passed.
+func WaitConnected(nodeA, nodeB *Core) bool {
+	// It may take up to 3 seconds, but let's wait 5.
+	for i := 0; i < 50; i++ {
+		time.Sleep(100 * time.Millisecond)
+		/*
+			if len(nodeA.GetPeers()) > 0 && len(nodeB.GetPeers()) > 0 {
+				return true
+			}
+		*/
+		if len(nodeA.GetTree()) > 1 && len(nodeB.GetTree()) > 1 {
+			time.Sleep(3 * time.Second) // FIXME hack, there's still stuff happening internally
+			return true
+		}
+	}
+	return false
+}
+
+// CreateEchoListener creates a routine listening on nodeA. It expects repeats messages of length bufLen.
+// It returns a channel used to synchronize the routine with caller.
+func CreateEchoListener(t testing.TB, nodeA *Core, bufLen int, repeats int) chan struct{} {
+	// Start routine
+	done := make(chan struct{})
+	go func() {
+		buf := make([]byte, bufLen)
+		res := make([]byte, bufLen)
+		for i := 0; i < repeats; i++ {
+			n, from, err := nodeA.ReadFrom(buf)
+			if err != nil {
+				t.Error(err)
+				return
+			}
+			if n != bufLen {
+				t.Error("missing data")
+				return
+			}
+			copy(res, buf)
+			copy(res[8:24], buf[24:40])
+			copy(res[24:40], buf[8:24])
+			_, err = nodeA.WriteTo(res, from)
+			if err != nil {
+				t.Error(err)
+			}
+		}
+		done <- struct{}{}
+	}()
+
+	return done
+}
+
+// TestCore_Start_Connect checks if two nodes can connect together.
+func TestCore_Start_Connect(t *testing.T) {
+	CreateAndConnectTwo(t, true)
+}
+
+// TestCore_Start_Transfer checks that messages can be passed between nodes (in both directions).
+func TestCore_Start_Transfer(t *testing.T) {
+	nodeA, nodeB := CreateAndConnectTwo(t, true)
+	defer nodeA.Stop()
+	defer nodeB.Stop()
+
+	msgLen := 1500
+	done := CreateEchoListener(t, nodeA, msgLen, 1)
+
+	if !WaitConnected(nodeA, nodeB) {
+		t.Fatal("nodes did not connect")
+	}
+
+	// Send
+	msg := make([]byte, msgLen)
+	_, _ = rand.Read(msg[40:])
+	msg[0] = 0x60
+	copy(msg[8:24], nodeB.Address())
+	copy(msg[24:40], nodeA.Address())
+	_, err := nodeB.WriteTo(msg, nodeA.LocalAddr())
+	if err != nil {
+		t.Fatal(err)
+	}
+	buf := make([]byte, msgLen)
+	_, _, err = nodeB.ReadFrom(buf)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !bytes.Equal(msg[40:], buf[40:]) {
+		t.Fatal("expected echo")
+	}
+	<-done
+}
+
+// BenchmarkCore_Start_Transfer estimates the possible transfer between nodes (in MB/s).
+func BenchmarkCore_Start_Transfer(b *testing.B) {
+	nodeA, nodeB := CreateAndConnectTwo(b, false)
+
+	msgLen := 1500 // typical MTU
+	done := CreateEchoListener(b, nodeA, msgLen, b.N)
+
+	if !WaitConnected(nodeA, nodeB) {
+		b.Fatal("nodes did not connect")
+	}
+
+	// Send
+	msg := make([]byte, msgLen)
+	_, _ = rand.Read(msg[40:])
+	msg[0] = 0x60
+	copy(msg[8:24], nodeB.Address())
+	copy(msg[24:40], nodeA.Address())
+
+	buf := make([]byte, msgLen)
+
+	b.SetBytes(int64(msgLen))
+	b.ResetTimer()
+
+	addr := nodeA.LocalAddr()
+	for i := 0; i < b.N; i++ {
+		_, err := nodeB.WriteTo(msg, addr)
+		if err != nil {
+			b.Fatal(err)
+		}
+		_, _, err = nodeB.ReadFrom(buf)
+		if err != nil {
+			b.Fatal(err)
+		}
+	}
+	<-done
+}
+
+func TestAllowedPublicKeys(t *testing.T) {
+	logger := GetLoggerWithPrefix("", false)
+	cfgA, cfgB := config.GenerateConfig(), config.GenerateConfig()
+	require_NoError(t, cfgA.GenerateSelfSignedCertificate())
+	require_NoError(t, cfgB.GenerateSelfSignedCertificate())
+
+	nodeA, err := New(cfgA.Certificate, logger, AllowedPublicKey("abcdef"))
+	require_NoError(t, err)
+	defer nodeA.Stop()
+
+	nodeB, err := New(cfgB.Certificate, logger)
+	require_NoError(t, err)
+	defer nodeB.Stop()
+
+	u, err := url.Parse("tcp://localhost:0")
+	require_NoError(t, err)
+
+	l, err := nodeA.Listen(u, "")
+	require_NoError(t, err)
+
+	u, err = url.Parse("tcp://" + l.Addr().String())
+	require_NoError(t, err)
+
+	require_NoError(t, nodeB.AddPeer(u, ""))
+
+	time.Sleep(time.Second)
+
+	peers := nodeB.GetPeers()
+	require_Equal(t, len(peers), 1)
+	require_True(t, !peers[0].Up)
+	require_True(t, peers[0].LastError != nil)
+}
+
+func TestAllowedPublicKeysLocal(t *testing.T) {
+	logger := GetLoggerWithPrefix("", false)
+	cfgA, cfgB := config.GenerateConfig(), config.GenerateConfig()
+	require_NoError(t, cfgA.GenerateSelfSignedCertificate())
+	require_NoError(t, cfgB.GenerateSelfSignedCertificate())
+
+	nodeA, err := New(cfgA.Certificate, logger, AllowedPublicKey("abcdef"))
+	require_NoError(t, err)
+	defer nodeA.Stop()
+
+	nodeB, err := New(cfgB.Certificate, logger)
+	require_NoError(t, err)
+	defer nodeB.Stop()
+
+	u, err := url.Parse("tcp://localhost:0")
+	require_NoError(t, err)
+
+	l, err := nodeA.ListenLocal(u, "")
+	require_NoError(t, err)
+
+	u, err = url.Parse("tcp://" + l.Addr().String())
+	require_NoError(t, err)
+
+	require_NoError(t, nodeB.AddPeer(u, ""))
+
+	time.Sleep(time.Second)
+
+	peers := nodeB.GetPeers()
+	require_Equal(t, len(peers), 1)
+	require_True(t, peers[0].Up)
+	require_True(t, peers[0].LastError == nil)
+}

src/core/debug.go

@@ -0,0 +1,19 @@
+package core
+
+import (
+	"fmt"
+	"net/http"
+	_ "net/http/pprof"
+	"os"
+)
+
+// Start the profiler if the required environment variable is set.
+func init() {
+	envVarName := "PPROFLISTEN"
+	if hostPort := os.Getenv(envVarName); hostPort != "" {
+		fmt.Fprintf(os.Stderr, "DEBUG: Starting pprof on %s\n", hostPort)
+		go func() {
+			fmt.Fprintf(os.Stderr, "DEBUG: %s", http.ListenAndServe(hostPort, nil))
+		}()
+	}
+}

src/core/link.go

@@ -0,0 +1,767 @@
+package core
+
+import (
+	"bytes"
+	"context"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"io"
+	"net"
+	"net/url"
+	"strconv"
+	"strings"
+	"sync/atomic"
+	"time"
+
+	"github.com/Arceliar/phony"
+	"github.com/yggdrasil-network/yggdrasil-go/src/address"
+	"golang.org/x/crypto/blake2b"
+)
+
+type linkType int
+
+const (
+	linkTypePersistent linkType = iota // Statically configured
+	linkTypeEphemeral                  // Multicast discovered
+	linkTypeIncoming                   // Incoming connection
+)
+
+const defaultBackoffLimit = time.Second << 12 // 1h8m16s
+const minimumBackoffLimit = time.Second * 30
+
+type links struct {
+	phony.Inbox
+	core  *Core
+	tcp   *linkTCP   // TCP interface support
+	tls   *linkTLS   // TLS interface support
+	unix  *linkUNIX  // UNIX interface support
+	socks *linkSOCKS // SOCKS interface support
+	quic  *linkQUIC  // QUIC interface support
+	ws    *linkWS    // WS interface support
+	wss   *linkWSS   // WSS interface support
+	// _links can only be modified safely from within the links actor
+	_links     map[linkInfo]*link // *link is nil if connection in progress
+	_listeners map[*Listener]context.CancelFunc
+}
+
+type linkProtocol interface {
+	dial(ctx context.Context, url *url.URL, info linkInfo, options linkOptions) (net.Conn, error)
+	listen(ctx context.Context, url *url.URL, sintf string) (net.Listener, error)
+}
+
+// linkInfo is used as a map key
+type linkInfo struct {
+	uri   string // Peering URI in complete form
+	sintf string // Peering source interface (i.e. from InterfacePeers)
+}
+
+// link tracks the state of a connection, either persistent or non-persistent
+type link struct {
+	ctx       context.Context    // Connection context
+	cancel    context.CancelFunc // Stop future redial attempts (when peer removed)
+	kick      chan struct{}      // Attempt to reconnect now, if backing off
+	linkType  linkType           // Type of link, i.e. outbound/inbound, persistent/ephemeral
+	linkProto string             // Protocol carrier of link, e.g. TCP, AWDL
+	// The remaining fields can only be modified safely from within the links actor
+	_conn    *linkConn // Connected link, if any, nil if not connected
+	_err     error     // Last error on the connection, if any
+	_errtime time.Time // Last time an error occurred
+}
+
+type linkOptions struct {
+	pinnedEd25519Keys map[keyArray]struct{}
+	priority          uint8
+	tlsSNI            string
+	password          []byte
+	maxBackoff        time.Duration
+}
+
+type Listener struct {
+	listener net.Listener
+	ctx      context.Context
+	Cancel   context.CancelFunc
+}
+
+func (l *Listener) Addr() net.Addr {
+	return l.listener.Addr()
+}
+
+func (l *links) init(c *Core) error {
+	l.core = c
+	l.tcp = l.newLinkTCP()
+	l.tls = l.newLinkTLS(l.tcp)
+	l.unix = l.newLinkUNIX()
+	l.socks = l.newLinkSOCKS()
+	l.quic = l.newLinkQUIC()
+	l.ws = l.newLinkWS()
+	l.wss = l.newLinkWSS()
+	l._links = make(map[linkInfo]*link)
+	l._listeners = make(map[*Listener]context.CancelFunc)
+
+	l.Act(nil, l._updateAverages)
+	return nil
+}
+
+func (l *links) _updateAverages() {
+	select {
+	case <-l.core.ctx.Done():
+		return
+	default:
+	}
+
+	for _, l := range l._links {
+		if l._conn == nil {
+			continue
+		}
+		rx := atomic.LoadUint64(&l._conn.rx)
+		tx := atomic.LoadUint64(&l._conn.tx)
+		lastrx := atomic.LoadUint64(&l._conn.lastrx)
+		lasttx := atomic.LoadUint64(&l._conn.lasttx)
+		atomic.StoreUint64(&l._conn.rxrate, rx-lastrx)
+		atomic.StoreUint64(&l._conn.txrate, tx-lasttx)
+		atomic.StoreUint64(&l._conn.lastrx, rx)
+		atomic.StoreUint64(&l._conn.lasttx, tx)
+	}
+
+	time.AfterFunc(time.Second, func() {
+		l.Act(nil, l._updateAverages)
+	})
+}
+
+func (l *links) shutdown() {
+	phony.Block(l, func() {
+		for _, cancel := range l._listeners {
+			cancel()
+		}
+		for _, link := range l._links {
+			if link._conn != nil {
+				_ = link._conn.Close()
+			}
+		}
+	})
+}
+
+type linkError string
+
+func (e linkError) Error() string { return string(e) }
+
+const ErrLinkAlreadyConfigured = linkError("peer is already configured")
+const ErrLinkNotConfigured = linkError("peer is not configured")
+const ErrLinkPriorityInvalid = linkError("priority value is invalid")
+const ErrLinkPinnedKeyInvalid = linkError("pinned public key is invalid")
+const ErrLinkPasswordInvalid = linkError("invalid password supplied")
+const ErrLinkUnrecognisedSchema = linkError("link schema unknown")
+const ErrLinkMaxBackoffInvalid = linkError("max backoff duration invalid")
+const ErrLinkSNINotSupported = linkError("SNI not supported on this link type")
+const ErrLinkNoSuitableIPs = linkError("peer has no suitable addresses")
+
+func (l *links) add(u *url.URL, sintf string, linkType linkType) error {
+	var retErr error
+	phony.Block(l, func() {
+		// Generate the link info and see whether we think we already
+		// have an open peering to this peer.
+		lu := urlForLinkInfo(*u)
+		info := linkInfo{
+			uri:   lu.String(),
+			sintf: sintf,
+		}
+
+		// Collect together the link options, these are global options
+		// that are not specific to any given protocol.
+		options := linkOptions{
+			maxBackoff: defaultBackoffLimit,
+		}
+		for _, pubkey := range u.Query()["key"] {
+			sigPub, err := hex.DecodeString(pubkey)
+			if err != nil {
+				retErr = ErrLinkPinnedKeyInvalid
+				return
+			}
+			var sigPubKey keyArray
+			copy(sigPubKey[:], sigPub)
+			if options.pinnedEd25519Keys == nil {
+				options.pinnedEd25519Keys = map[keyArray]struct{}{}
+			}
+			options.pinnedEd25519Keys[sigPubKey] = struct{}{}
+		}
+		if p := u.Query().Get("priority"); p != "" {
+			pi, err := strconv.ParseUint(p, 10, 8)
+			if err != nil {
+				retErr = ErrLinkPriorityInvalid
+				return
+			}
+			options.priority = uint8(pi)
+		}
+		if p := u.Query().Get("password"); p != "" {
+			if len(p) > blake2b.Size {
+				retErr = ErrLinkPasswordInvalid
+				return
+			}
+			options.password = []byte(p)
+		}
+		if p := u.Query().Get("maxbackoff"); p != "" {
+			d, err := time.ParseDuration(p)
+			if err != nil || d < minimumBackoffLimit {
+				retErr = ErrLinkMaxBackoffInvalid
+				return
+			}
+			options.maxBackoff = d
+		}
+		// SNI headers must contain hostnames and not IP addresses, so we must make sure
+		// that we do not populate the SNI with an IP literal. We do this by splitting
+		// the host-port combo from the query option and then seeing if it parses to an
+		// IP address successfully or not.
+		if sni := u.Query().Get("sni"); sni != "" {
+			if net.ParseIP(sni) == nil {
+				options.tlsSNI = sni
+			}
+		}
+		// If the SNI is not configured still because the above failed then we'll try
+		// again but this time we'll use the host part of the peering URI instead.
+		if options.tlsSNI == "" {
+			if host, _, err := net.SplitHostPort(u.Host); err == nil && net.ParseIP(host) == nil {
+				options.tlsSNI = host
+			}
+		}
+
+		// If we think we're already connected to this peer, load up
+		// the existing peer state. Try to kick the peer if possible,
+		// which will cause an immediate connection attempt if it is
+		// backing off for some reason.
+		state, ok := l._links[info]
+		if ok && state != nil {
+			select {
+			case state.kick <- struct{}{}:
+			default:
+			}
+			retErr = ErrLinkAlreadyConfigured
+			return
+		}
+
+		// Create the link entry. This will contain the connection
+		// in progress (if any), any error details and a context that
+		// lets the link be cancelled later.
+		state = &link{
+			linkType:  linkType,
+			linkProto: strings.ToUpper(u.Scheme),
+			kick:      make(chan struct{}),
+		}
+		state.ctx, state.cancel = context.WithCancel(l.core.ctx)
+
+		// Store the state of the link so that it can be queried later.
+		l._links[info] = state
+
+		// Track how many consecutive connection failures we have had,
+		// as we will back off exponentially rather than hammering the
+		// remote node endlessly.
+		var backoff int
+
+		// backoffNow is called when there's a connection error. It
+		// will wait for the specified amount of time and then return
+		// true, unless the peering context was cancelled (due to a
+		// peer removal most likely), in which case it returns false.
+		// The caller should check the return value to decide whether
+		// or not to give up trying.
+		backoffNow := func() bool {
+			if backoff < 32 {
+				backoff++
+			}
+			duration := time.Second << backoff
+			if duration > options.maxBackoff {
+				duration = options.maxBackoff
+			}
+			select {
+			case <-state.kick:
+				return true
+			case <-state.ctx.Done():
+				return false
+			case <-l.core.ctx.Done():
+				return false
+			case <-time.After(duration):
+				return true
+			}
+		}
+
+		// resetBackoff is called by the connection handler when the
+		// handshake has successfully completed.
+		resetBackoff := func() {
+			backoff = 0
+		}
+
+		// The goroutine is responsible for attempting the connection
+		// and then running the handler. If the connection is persistent
+		// then the loop will run endlessly, using backoffs as needed.
+		// Otherwise the loop will end, cleaning up the link entry.
+		go func() {
+			defer phony.Block(l, func() {
+				if l._links[info] == state {
+					delete(l._links, info)
+				}
+			})
+
+			// This loop will run each and every time we want to attempt
+			// a connection to this peer.
+			// TODO get rid of this loop, this is *exactly* what time.AfterFunc is for, we should just send a signal to the links actor to kick off a goroutine as needed
+			for {
+				select {
+				case <-state.ctx.Done():
+					// The peering context has been cancelled, so don't try
+					// to dial again.
+					return
+				default:
+				}
+
+				conn, err := l.connect(state.ctx, u, info, options)
+				if err != nil || conn == nil {
+					if err == nil && conn == nil {
+						l.core.log.Warnf("Link %q reached inconsistent error state", u.String())
+					}
+					if linkType == linkTypePersistent {
+						// If the link is a persistent configured peering,
+						// store information about the connection error so
+						// that we can report it through the admin socket.
+						phony.Block(l, func() {
+							state._conn = nil
+							state._err = err
+							state._errtime = time.Now()
+						})
+
+						// Back off for a bit. If true is returned here, we
+						// can continue onto the next loop iteration to try
+						// the next connection.
+						if backoffNow() {
+							continue
+						}
+						return
+					}
+					// Ephemeral and incoming connections don't remain
+					// after a connection failure, so exit out of the
+					// loop and clean up the link entry.
+					break
+				}
+
+				// The linkConn wrapper allows us to track the number of
+				// bytes written to and read from this connection without
+				// the help of ironwood.
+				lc := &linkConn{
+					Conn: conn,
+					up:   time.Now(),
+				}
+
+				// Update the link state with our newly wrapped connection.
+				// Clear the error state.
+				var doRet bool
+				phony.Block(l, func() {
+					if state._conn != nil {
+						// If a peering has come up in this time, abort this one.
+						doRet = true
+					}
+					state._conn = lc
+				})
+				if doRet {
+					return
+				}
+
+				// Give the connection to the handler. The handler will block
+				// for the lifetime of the connection.
+				switch err = l.handler(linkType, options, lc, resetBackoff, false); {
+				case err == nil:
+				case errors.Is(err, io.EOF):
+				case errors.Is(err, net.ErrClosed):
+				default:
+					l.core.log.Debugf("Link %s error: %s\n", u.Host, err)
+				}
+
+				// The handler has stopped running so the connection is dead,
+				// try to close the underlying socket just in case and then
+				// update the link state.
+				_ = lc.Close()
+				phony.Block(l, func() {
+					state._conn = nil
+					if err == nil {
+						err = fmt.Errorf("remote side closed the connection")
+					}
+					state._err = err
+					state._errtime = time.Now()
+				})
+
+				// If the link is persistently configured, back off if needed
+				// and then try reconnecting. Otherwise, exit out.
+				if linkType == linkTypePersistent {
+					if backoffNow() {
+						continue
+					}
+				}
+				// Ephemeral or incoming connections don't reconnect.
+				return
+			}
+		}()
+	})
+	return retErr
+}
+
+func (l *links) remove(u *url.URL, sintf string, _ linkType) error {
+	var retErr error
+	phony.Block(l, func() {
+		// Generate the link info and see whether we think we already
+		// have an open peering to this peer.
+		lu := urlForLinkInfo(*u)
+		info := linkInfo{
+			uri:   lu.String(),
+			sintf: sintf,
+		}
+
+		// If this peer is already configured then we will close the
+		// connection and stop it from retrying.
+		state, ok := l._links[info]
+		if ok && state != nil {
+			state.cancel()
+			if conn := state._conn; conn != nil {
+				retErr = conn.Close()
+			}
+			return
+		}
+
+		retErr = ErrLinkNotConfigured
+	})
+	return retErr
+}
+
+func (l *links) listen(u *url.URL, sintf string, local bool) (*Listener, error) {
+	ctx, ctxcancel := context.WithCancel(l.core.ctx)
+	var protocol linkProtocol
+	switch strings.ToLower(u.Scheme) {
+	case "tcp":
+		protocol = l.tcp
+	case "tls":
+		protocol = l.tls
+	case "unix":
+		protocol = l.unix
+	case "quic":
+		protocol = l.quic
+	case "ws":
+		protocol = l.ws
+	case "wss":
+		protocol = l.wss
+	default:
+		ctxcancel()
+		return nil, ErrLinkUnrecognisedSchema
+	}
+	listener, err := protocol.listen(ctx, u, sintf)
+	if err != nil {
+		ctxcancel()
+		return nil, err
+	}
+	addr := listener.Addr()
+	cancel := func() {
+		ctxcancel()
+		if err := listener.Close(); err != nil && !errors.Is(err, net.ErrClosed) {
+			l.core.log.Warnf("Error closing %s listener %s: %s", strings.ToUpper(u.Scheme), addr, err)
+		}
+	}
+	li := &Listener{
+		listener: listener,
+		ctx:      ctx,
+		Cancel:   cancel,
+	}
+
+	var options linkOptions
+	if p := u.Query().Get("priority"); p != "" {
+		pi, err := strconv.ParseUint(p, 10, 8)
+		if err != nil {
+			return nil, ErrLinkPriorityInvalid
+		}
+		options.priority = uint8(pi)
+	}
+	if p := u.Query().Get("password"); p != "" {
+		if len(p) > blake2b.Size {
+			return nil, ErrLinkPasswordInvalid
+		}
+		options.password = []byte(p)
+	}
+
+	phony.Block(l, func() {
+		l._listeners[li] = cancel
+	})
+
+	go func() {
+		l.core.log.Infof("%s listener started on %s", strings.ToUpper(u.Scheme), addr)
+		defer phony.Block(l, func() {
+			cancel()
+			delete(l._listeners, li)
+			l.core.log.Infof("%s listener stopped on %s", strings.ToUpper(u.Scheme), addr)
+		})
+		for {
+			conn, err := li.listener.Accept()
+			if err != nil {
+				return
+			}
+			go func(conn net.Conn) {
+				defer conn.Close()
+
+				// In order to populate a somewhat sane looking connection
+				// URI in the admin socket, we need to replace the host in
+				// the listener URL with the remote address.
+				pu := *u
+				pu.Host = conn.RemoteAddr().String()
+				lu := urlForLinkInfo(pu)
+				info := linkInfo{
+					uri:   lu.String(),
+					sintf: sintf,
+				}
+
+				// If there's an existing link state for this link, get it.
+				// If this node is already connected to us, just drop the
+				// connection. This prevents duplicate peerings.
+				var lc *linkConn
+				var state *link
+				phony.Block(l, func() {
+					var ok bool
+					state, ok = l._links[info]
+					if !ok || state == nil {
+						state = &link{
+							linkType:  linkTypeIncoming,
+							linkProto: strings.ToUpper(u.Scheme),
+							kick:      make(chan struct{}),
+						}
+					}
+					if state._conn != nil {
+						// If a connection has come up in this time, abort
+						// this one.
+						return
+					}
+
+					// The linkConn wrapper allows us to track the number of
+					// bytes written to and read from this connection without
+					// the help of ironwood.
+					lc = &linkConn{
+						Conn: conn,
+						up:   time.Now(),
+					}
+
+					// Update the link state with our newly wrapped connection.
+					// Clear the error state.
+					state._conn = lc
+					state._err = nil
+					state._errtime = time.Time{}
+
+					// Store the state of the link so that it can be queried later.
+					l._links[info] = state
+				})
+				defer phony.Block(l, func() {
+					if l._links[info] == state {
+						delete(l._links, info)
+					}
+				})
+				if lc == nil {
+					return
+				}
+
+				// Give the connection to the handler. The handler will block
+				// for the lifetime of the connection.
+				switch err = l.handler(linkTypeIncoming, options, lc, nil, local); {
+				case err == nil:
+				case errors.Is(err, io.EOF):
+				case errors.Is(err, net.ErrClosed):
+				default:
+					l.core.log.Debugf("Link %s error: %s\n", u.Host, err)
+				}
+
+				// The handler has stopped running so the connection is dead,
+				// try to close the underlying socket just in case and then
+				// drop the link state.
+				_ = lc.Close()
+			}(conn)
+		}
+	}()
+	return li, nil
+}
+
+func (l *links) connect(ctx context.Context, u *url.URL, info linkInfo, options linkOptions) (net.Conn, error) {
+	var dialer linkProtocol
+	switch strings.ToLower(u.Scheme) {
+	case "tcp":
+		dialer = l.tcp
+	case "tls":
+		dialer = l.tls
+	case "socks", "sockstls":
+		dialer = l.socks
+	case "unix":
+		dialer = l.unix
+	case "quic":
+		dialer = l.quic
+	case "ws":
+		dialer = l.ws
+	case "wss":
+		dialer = l.wss
+	default:
+		return nil, ErrLinkUnrecognisedSchema
+	}
+	return dialer.dial(ctx, u, info, options)
+}
+
+func (l *links) handler(linkType linkType, options linkOptions, conn net.Conn, success func(), local bool) error {
+	meta := version_getBaseMetadata()
+	meta.publicKey = l.core.public
+	meta.priority = options.priority
+	metaBytes, err := meta.encode(l.core.secret, options.password)
+	if err != nil {
+		return fmt.Errorf("failed to generate handshake: %w", err)
+	}
+	if err := conn.SetDeadline(time.Now().Add(time.Second * 6)); err != nil {
+		return fmt.Errorf("failed to set handshake deadline: %w", err)
+	}
+	n, err := conn.Write(metaBytes)
+	switch {
+	case err != nil:
+		return fmt.Errorf("write handshake: %w", err)
+	case n != len(metaBytes):
+		return fmt.Errorf("incomplete handshake send")
+	}
+	meta = version_metadata{}
+	base := version_getBaseMetadata()
+	if err := meta.decode(conn, options.password); err != nil {
+		_ = conn.Close()
+		return err
+	}
+	if !meta.check() {
+		return fmt.Errorf("remote node incompatible version (local %s, remote %s)",
+			fmt.Sprintf("%d.%d", base.majorVer, base.minorVer),
+			fmt.Sprintf("%d.%d", meta.majorVer, meta.minorVer),
+		)
+	}
+	if err = conn.SetDeadline(time.Time{}); err != nil {
+		return fmt.Errorf("failed to clear handshake deadline: %w", err)
+	}
+	// Check if the remote side matches the keys we expected. This is a bit of a weak
+	// check - in future versions we really should check a signature or something like that.
+	if pinned := options.pinnedEd25519Keys; len(pinned) > 0 {
+		var key keyArray
+		copy(key[:], meta.publicKey)
+		if _, allowed := pinned[key]; !allowed {
+			return fmt.Errorf("node public key that does not match pinned keys")
+		}
+	}
+	// Check if we're authorized to connect to this key / IP
+	if !local {
+		var allowed map[[32]byte]struct{}
+		phony.Block(l.core, func() {
+			allowed = l.core.config._allowedPublicKeys
+		})
+		isallowed := len(allowed) == 0
+		for k := range allowed {
+			if bytes.Equal(k[:], meta.publicKey) {
+				isallowed = true
+				break
+			}
+		}
+		if linkType == linkTypeIncoming && !isallowed {
+			return fmt.Errorf("node public key %q is not in AllowedPublicKeys", hex.EncodeToString(meta.publicKey))
+		}
+	}
+
+	dir := "outbound"
+	if linkType == linkTypeIncoming {
+		dir = "inbound"
+	}
+	remoteAddr := net.IP(address.AddrForKey(meta.publicKey)[:]).String()
+	remoteStr := fmt.Sprintf("%s@%s", remoteAddr, conn.RemoteAddr())
+	localStr := conn.LocalAddr()
+	priority := options.priority
+	if meta.priority > priority {
+		priority = meta.priority
+	}
+	l.core.log.Infof("Connected %s: %s, source %s",
+		dir, remoteStr, localStr)
+	if success != nil {
+		success()
+	}
+
+	err = l.core.HandleConn(meta.publicKey, conn, priority)
+	switch err {
+	case io.EOF, net.ErrClosed, nil:
+		l.core.log.Infof("Disconnected %s: %s, source %s",
+			dir, remoteStr, localStr)
+	default:
+		l.core.log.Infof("Disconnected %s: %s, source %s; error: %s",
+			dir, remoteStr, localStr, err)
+	}
+	return err
+}
+
+func (l *links) findSuitableIP(url *url.URL, fn func(hostname string, ip net.IP, port int) (net.Conn, error)) (net.Conn, error) {
+	host, p, err := net.SplitHostPort(url.Host)
+	if err != nil {
+		return nil, err
+	}
+	port, err := strconv.Atoi(p)
+	if err != nil {
+		return nil, err
+	}
+	resp, err := net.LookupIP(host)
+	if err != nil {
+		return nil, err
+	}
+	var _ips [64]net.IP
+	ips := _ips[:0]
+	for _, ip := range resp {
+		switch {
+		case ip.IsUnspecified():
+			continue
+		case ip.IsMulticast():
+			continue
+		case ip.IsLinkLocalMulticast():
+			continue
+		case ip.IsInterfaceLocalMulticast():
+			continue
+		case l.core.config.peerFilter != nil && !l.core.config.peerFilter(ip):
+			continue
+		}
+		ips = append(ips, ip)
+	}
+	if len(ips) == 0 {
+		return nil, ErrLinkNoSuitableIPs
+	}
+	for _, ip := range ips {
+		var conn net.Conn
+		if conn, err = fn(host, ip, port); err != nil {
+			url := *url
+			url.RawQuery = ""
+			l.core.log.Debugln("Dialling", url.Redacted(), "reported error:", err)
+			continue
+		}
+		return conn, nil
+	}
+	return nil, err
+}
+
+func urlForLinkInfo(u url.URL) url.URL {
+	u.RawQuery = ""
+	return u
+}
+
+type linkConn struct {
+	// tx and rx are at the beginning of the struct to ensure 64-bit alignment
+	// on 32-bit platforms, see https://pkg.go.dev/sync/atomic#pkg-note-BUG
+	rx     uint64
+	tx     uint64
+	rxrate uint64
+	txrate uint64
+	lastrx uint64
+	lasttx uint64
+	up     time.Time
+	net.Conn
+}
+
+func (c *linkConn) Read(p []byte) (n int, err error) {
+	n, err = c.Conn.Read(p)
+	atomic.AddUint64(&c.rx, uint64(n))
+	return
+}
+
+func (c *linkConn) Write(p []byte) (n int, err error) {
+	n, err = c.Conn.Write(p)
+	atomic.AddUint64(&c.tx, uint64(n))
+	return
+}

src/core/link_quic.go

@@ -0,0 +1,108 @@
+package core
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+	"net"
+	"net/url"
+	"time"
+
+	"github.com/Arceliar/phony"
+	"github.com/quic-go/quic-go"
+)
+
+type linkQUIC struct {
+	phony.Inbox
+	*links
+	tlsconfig  *tls.Config
+	quicconfig *quic.Config
+}
+
+type linkQUICStream struct {
+	quic.Connection
+	quic.Stream
+}
+
+type linkQUICListener struct {
+	*quic.Listener
+	ch <-chan *linkQUICStream
+}
+
+func (l *linkQUICListener) Accept() (net.Conn, error) {
+	qs := <-l.ch
+	if qs == nil {
+		return nil, context.Canceled
+	}
+	return qs, nil
+}
+
+func (l *links) newLinkQUIC() *linkQUIC {
+	lt := &linkQUIC{
+		links:     l,
+		tlsconfig: l.core.config.tls.Clone(),
+		quicconfig: &quic.Config{
+			MaxIdleTimeout:  time.Minute,
+			KeepAlivePeriod: time.Second * 20,
+			TokenStore:      quic.NewLRUTokenStore(255, 255),
+		},
+	}
+	return lt
+}
+
+func (l *linkQUIC) dial(ctx context.Context, url *url.URL, info linkInfo, options linkOptions) (net.Conn, error) {
+	tlsconfig := l.tlsconfig.Clone()
+	return l.links.findSuitableIP(url, func(hostname string, ip net.IP, port int) (net.Conn, error) {
+		tlsconfig.ServerName = hostname
+		tlsconfig.MinVersion = tls.VersionTLS12
+		tlsconfig.MaxVersion = tls.VersionTLS13
+		hostport := net.JoinHostPort(ip.String(), fmt.Sprintf("%d", port))
+		qc, err := quic.DialAddr(ctx, hostport, l.tlsconfig, l.quicconfig)
+		if err != nil {
+			return nil, err
+		}
+		qs, err := qc.OpenStreamSync(ctx)
+		if err != nil {
+			return nil, err
+		}
+		return &linkQUICStream{
+			Connection: qc,
+			Stream:     qs,
+		}, nil
+	})
+}
+
+func (l *linkQUIC) listen(ctx context.Context, url *url.URL, _ string) (net.Listener, error) {
+	ql, err := quic.ListenAddr(url.Host, l.tlsconfig, l.quicconfig)
+	if err != nil {
+		return nil, err
+	}
+	ch := make(chan *linkQUICStream)
+	lql := &linkQUICListener{
+		Listener: ql,
+		ch:       ch,
+	}
+	go func() {
+		for {
+			qc, err := ql.Accept(ctx)
+			switch err {
+			case context.Canceled, context.DeadlineExceeded:
+				ql.Close()
+				fallthrough
+			case quic.ErrServerClosed:
+				return
+			case nil:
+				qs, err := qc.AcceptStream(ctx)
+				if err != nil {
+					_ = qc.CloseWithError(1, fmt.Sprintf("stream error: %s", err))
+					continue
+				}
+				ch <- &linkQUICStream{
+					Connection: qc,
+					Stream:     qs,
+				}
+			}
+		}
+	}()
+	return lql, nil
+}

src/core/link_socks.go

@@ -0,0 +1,67 @@
+package core
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+	"net"
+	"net/url"
+	"strings"
+
+	"golang.org/x/net/proxy"
+)
+
+type linkSOCKS struct {
+	*links
+}
+
+func (l *links) newLinkSOCKS() *linkSOCKS {
+	lt := &linkSOCKS{
+		links: l,
+	}
+	return lt
+}
+
+func (l *linkSOCKS) dial(_ context.Context, url *url.URL, info linkInfo, options linkOptions) (net.Conn, error) {
+	var proxyAuth *proxy.Auth
+	if url.User != nil && url.User.Username() != "" {
+		proxyAuth = &proxy.Auth{
+			User: url.User.Username(),
+		}
+		proxyAuth.Password, _ = url.User.Password()
+	}
+	tlsconfig := l.tls.config.Clone()
+	return l.links.findSuitableIP(url, func(hostname string, ip net.IP, port int) (net.Conn, error) {
+		hostport := net.JoinHostPort(ip.String(), fmt.Sprintf("%d", port))
+		dialer, err := l.tcp.dialerFor(&net.TCPAddr{
+			IP:   ip,
+			Port: port,
+		}, info.sintf)
+		if err != nil {
+			return nil, err
+		}
+		proxy, err := proxy.SOCKS5("tcp", hostport, proxyAuth, dialer)
+		if err != nil {
+			return nil, err
+		}
+		pathtokens := strings.Split(strings.Trim(url.Path, "/"), "/")
+		conn, err := proxy.Dial("tcp", pathtokens[0])
+		if err != nil {
+			return nil, err
+		}
+		if url.Scheme == "sockstls" {
+			tlsconfig.ServerName = hostname
+			tlsconfig.MinVersion = tls.VersionTLS12
+			tlsconfig.MaxVersion = tls.VersionTLS13
+			if sni := options.tlsSNI; sni != "" {
+				tlsconfig.ServerName = sni
+			}
+			conn = tls.Client(conn, tlsconfig)
+		}
+		return conn, nil
+	})
+}
+
+func (l *linkSOCKS) listen(ctx context.Context, url *url.URL, _ string) (net.Listener, error) {
+	return nil, fmt.Errorf("SOCKS listener not supported")
+}

src/core/link_tcp.go

@@ -0,0 +1,111 @@
+package core
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"net/url"
+	"time"
+
+	"github.com/Arceliar/phony"
+)
+
+type linkTCP struct {
+	phony.Inbox
+	*links
+	listenconfig *net.ListenConfig
+}
+
+func (l *links) newLinkTCP() *linkTCP {
+	lt := &linkTCP{
+		links: l,
+		listenconfig: &net.ListenConfig{
+			KeepAlive: -1,
+		},
+	}
+	lt.listenconfig.Control = lt.tcpContext
+	return lt
+}
+
+func (l *linkTCP) dial(ctx context.Context, url *url.URL, info linkInfo, options linkOptions) (net.Conn, error) {
+	return l.links.findSuitableIP(url, func(hostname string, ip net.IP, port int) (net.Conn, error) {
+		addr := &net.TCPAddr{
+			IP:   ip,
+			Port: port,
+		}
+		dialer, err := l.tcp.dialerFor(addr, info.sintf)
+		if err != nil {
+			return nil, err
+		}
+		return dialer.DialContext(ctx, "tcp", addr.String())
+	})
+}
+
+func (l *linkTCP) listen(ctx context.Context, url *url.URL, sintf string) (net.Listener, error) {
+	hostport := url.Host
+	if sintf != "" {
+		if host, port, err := net.SplitHostPort(hostport); err == nil {
+			hostport = fmt.Sprintf("[%s%%%s]:%s", host, sintf, port)
+		}
+	}
+	return l.listenconfig.Listen(ctx, "tcp", hostport)
+}
+
+func (l *linkTCP) dialerFor(dst *net.TCPAddr, sintf string) (*net.Dialer, error) {
+	if dst.IP.IsLinkLocalUnicast() {
+		if sintf != "" {
+			dst.Zone = sintf
+		}
+		if dst.Zone == "" {
+			return nil, fmt.Errorf("link-local address requires a zone")
+		}
+	}
+	dialer := &net.Dialer{
+		Timeout:   time.Second * 5,
+		KeepAlive: -1,
+		Control:   l.tcpContext,
+	}
+	if sintf != "" {
+		dialer.Control = l.getControl(sintf)
+		ief, err := net.InterfaceByName(sintf)
+		if err != nil {
+			return nil, fmt.Errorf("interface %q not found", sintf)
+		}
+		if ief.Flags&net.FlagUp == 0 {
+			return nil, fmt.Errorf("interface %q is not up", sintf)
+		}
+		addrs, err := ief.Addrs()
+		if err != nil {
+			return nil, fmt.Errorf("interface %q addresses not available: %w", sintf, err)
+		}
+		for addrindex, addr := range addrs {
+			src, _, err := net.ParseCIDR(addr.String())
+			if err != nil {
+				continue
+			}
+			if !src.IsGlobalUnicast() && !src.IsLinkLocalUnicast() {
+				continue
+			}
+			bothglobal := src.IsGlobalUnicast() == dst.IP.IsGlobalUnicast()
+			bothlinklocal := src.IsLinkLocalUnicast() == dst.IP.IsLinkLocalUnicast()
+			if !bothglobal && !bothlinklocal {
+				continue
+			}
+			if (src.To4() != nil) != (dst.IP.To4() != nil) {
+				continue
+			}
+			if bothglobal || bothlinklocal || addrindex == len(addrs)-1 {
+				dialer.LocalAddr = &net.TCPAddr{
+					IP:   src,
+					Port: 0,
+					Zone: sintf,
+				}
+				break
+			}
+		}
+		if dialer.LocalAddr == nil {
+			return nil, fmt.Errorf("no suitable source address found on interface %q", sintf)
+		}
+	}
+	return dialer, nil
+}

src/core/link_tcp_darwin.go

@@ -1,6 +1,7 @@
+//go:build darwin
 // +build darwin
 
-package yggdrasil
+package core
 
 import (
 	"syscall"
@@ -10,7 +11,7 @@ import (
 
 // WARNING: This context is used both by net.Dialer and net.Listen in tcp.go
 
-func (t *tcp) tcpContext(network, address string, c syscall.RawConn) error {
+func (t *linkTCP) tcpContext(network, address string, c syscall.RawConn) error {
 	var control error
 	var recvanyif error
 
@@ -26,3 +27,7 @@ func (t *tcp) tcpContext(network, address string, c syscall.RawConn) error {
 		return control
 	}
 }
+
+func (t *linkTCP) getControl(_ string) func(string, string, syscall.RawConn) error {
+	return t.tcpContext
+}

src/core/link_tcp_linux.go

@@ -0,0 +1,30 @@
+//go:build linux
+// +build linux
+
+package core
+
+import (
+	"syscall"
+
+	"golang.org/x/sys/unix"
+)
+
+// WARNING: This context is used both by net.Dialer and net.Listen in tcp.go
+
+func (t *linkTCP) tcpContext(network, address string, c syscall.RawConn) error {
+	return nil
+}
+
+func (t *linkTCP) getControl(sintf string) func(string, string, syscall.RawConn) error {
+	return func(network, address string, c syscall.RawConn) error {
+		var err error
+		btd := func(fd uintptr) {
+			err = unix.BindToDevice(int(fd), sintf)
+		}
+		_ = c.Control(btd)
+		if err != nil {
+			t.links.core.log.Debugln("Failed to set SO_BINDTODEVICE:", sintf)
+		}
+		return t.tcpContext(network, address, c)
+	}
+}

src/core/link_tcp_other.go

@@ -0,0 +1,18 @@
+//go:build !darwin && !linux
+// +build !darwin,!linux
+
+package core
+
+import (
+	"syscall"
+)
+
+// WARNING: This context is used both by net.Dialer and net.Listen in tcp.go
+
+func (t *linkTCP) tcpContext(network, address string, c syscall.RawConn) error {
+	return nil
+}
+
+func (t *linkTCP) getControl(sintf string) func(string, string, syscall.RawConn) error {
+	return t.tcpContext
+}

src/core/link_tls.go

@@ -0,0 +1,72 @@
+package core
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+	"net"
+	"net/url"
+
+	"github.com/Arceliar/phony"
+)
+
+type linkTLS struct {
+	phony.Inbox
+	*links
+	tcp      *linkTCP
+	listener *net.ListenConfig
+	config   *tls.Config
+}
+
+func (l *links) newLinkTLS(tcp *linkTCP) *linkTLS {
+	lt := &linkTLS{
+		links: l,
+		tcp:   tcp,
+		listener: &net.ListenConfig{
+			Control:   tcp.tcpContext,
+			KeepAlive: -1,
+		},
+		config: l.core.config.tls.Clone(),
+	}
+	return lt
+}
+
+func (l *linkTLS) dial(ctx context.Context, url *url.URL, info linkInfo, options linkOptions) (net.Conn, error) {
+	tlsconfig := l.config.Clone()
+	return l.links.findSuitableIP(url, func(hostname string, ip net.IP, port int) (net.Conn, error) {
+		tlsconfig.ServerName = hostname
+		tlsconfig.MinVersion = tls.VersionTLS12
+		tlsconfig.MaxVersion = tls.VersionTLS13
+		if sni := options.tlsSNI; sni != "" {
+			tlsconfig.ServerName = sni
+		}
+		addr := &net.TCPAddr{
+			IP:   ip,
+			Port: port,
+		}
+		dialer, err := l.tcp.dialerFor(addr, info.sintf)
+		if err != nil {
+			return nil, err
+		}
+		tlsdialer := &tls.Dialer{
+			NetDialer: dialer,
+			Config:    tlsconfig,
+		}
+		return tlsdialer.DialContext(ctx, "tcp", addr.String())
+	})
+}
+
+func (l *linkTLS) listen(ctx context.Context, url *url.URL, sintf string) (net.Listener, error) {
+	hostport := url.Host
+	if sintf != "" {
+		if host, port, err := net.SplitHostPort(hostport); err == nil {
+			hostport = fmt.Sprintf("[%s%%%s]:%s", host, sintf, port)
+		}
+	}
+	listener, err := l.listener.Listen(ctx, "tcp", hostport)
+	if err != nil {
+		return nil, err
+	}
+	tlslistener := tls.NewListener(listener, l.config)
+	return tlslistener, nil
+}

src/core/link_unix.go

@@ -0,0 +1,43 @@
+package core
+
+import (
+	"context"
+	"net"
+	"net/url"
+	"time"
+
+	"github.com/Arceliar/phony"
+)
+
+type linkUNIX struct {
+	phony.Inbox
+	*links
+	dialer   *net.Dialer
+	listener *net.ListenConfig
+}
+
+func (l *links) newLinkUNIX() *linkUNIX {
+	lt := &linkUNIX{
+		links: l,
+		dialer: &net.Dialer{
+			Timeout:   time.Second * 5,
+			KeepAlive: -1,
+		},
+		listener: &net.ListenConfig{
+			KeepAlive: -1,
+		},
+	}
+	return lt
+}
+
+func (l *linkUNIX) dial(ctx context.Context, url *url.URL, info linkInfo, options linkOptions) (net.Conn, error) {
+	addr, err := net.ResolveUnixAddr("unix", url.Path)
+	if err != nil {
+		return nil, err
+	}
+	return l.dialer.DialContext(ctx, "unix", addr.String())
+}
+
+func (l *linkUNIX) listen(ctx context.Context, url *url.URL, _ string) (net.Listener, error) {
+	return l.listener.Listen(ctx, "unix", url.Path)
+}

src/core/link_ws.go

@@ -0,0 +1,148 @@
+package core
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"net/http"
+	"net/url"
+	"time"
+
+	"github.com/Arceliar/phony"
+	"github.com/coder/websocket"
+)
+
+type linkWS struct {
+	phony.Inbox
+	*links
+	listenconfig *net.ListenConfig
+}
+
+type linkWSConn struct {
+	net.Conn
+}
+
+type linkWSListener struct {
+	ch         chan *linkWSConn
+	ctx        context.Context
+	httpServer *http.Server
+	listener   net.Listener
+}
+
+type wsServer struct {
+	ch  chan *linkWSConn
+	ctx context.Context
+}
+
+func (l *linkWSListener) Accept() (net.Conn, error) {
+	qs := <-l.ch
+	if qs == nil {
+		return nil, context.Canceled
+	}
+	return qs, nil
+}
+
+func (l *linkWSListener) Addr() net.Addr {
+	return l.listener.Addr()
+}
+
+func (l *linkWSListener) Close() error {
+	if err := l.httpServer.Shutdown(l.ctx); err != nil {
+		return err
+	}
+	return l.listener.Close()
+}
+
+func (s *wsServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	if r.URL.Path == "/health" || r.URL.Path == "/healthz" {
+		w.WriteHeader(http.StatusOK)
+		_, _ = w.Write([]byte("OK"))
+		return
+	}
+
+	c, err := websocket.Accept(w, r, &websocket.AcceptOptions{
+		Subprotocols: []string{"ygg-ws"},
+	})
+	if err != nil {
+		return
+	}
+
+	if c.Subprotocol() != "ygg-ws" {
+		c.Close(websocket.StatusPolicyViolation, "client must speak the ygg-ws subprotocol")
+		return
+	}
+
+	s.ch <- &linkWSConn{
+		Conn: websocket.NetConn(s.ctx, c, websocket.MessageBinary),
+	}
+}
+
+func (l *links) newLinkWS() *linkWS {
+	lt := &linkWS{
+		links: l,
+		listenconfig: &net.ListenConfig{
+			KeepAlive: -1,
+		},
+	}
+	return lt
+}
+
+func (l *linkWS) dial(ctx context.Context, url *url.URL, info linkInfo, options linkOptions) (net.Conn, error) {
+	return l.links.findSuitableIP(url, func(hostname string, ip net.IP, port int) (net.Conn, error) {
+		u := *url
+		u.Host = net.JoinHostPort(ip.String(), fmt.Sprintf("%d", port))
+		addr := &net.TCPAddr{
+			IP:   ip,
+			Port: port,
+		}
+		dialer, err := l.tcp.dialerFor(addr, info.sintf)
+		if err != nil {
+			return nil, err
+		}
+		wsconn, _, err := websocket.Dial(ctx, u.String(), &websocket.DialOptions{
+			HTTPClient: &http.Client{
+				Transport: &http.Transport{
+					Proxy:       http.ProxyFromEnvironment,
+					Dial:        dialer.Dial,
+					DialContext: dialer.DialContext,
+				},
+			},
+			Subprotocols: []string{"ygg-ws"},
+			Host:         hostname,
+		})
+		if err != nil {
+			return nil, err
+		}
+		return &linkWSConn{
+			Conn: websocket.NetConn(ctx, wsconn, websocket.MessageBinary),
+		}, nil
+	})
+}
+
+func (l *linkWS) listen(ctx context.Context, url *url.URL, _ string) (net.Listener, error) {
+	nl, err := l.listenconfig.Listen(ctx, "tcp", url.Host)
+	if err != nil {
+		return nil, err
+	}
+
+	ch := make(chan *linkWSConn)
+
+	httpServer := &http.Server{
+		Handler: &wsServer{
+			ch:  ch,
+			ctx: ctx,
+		},
+		BaseContext:  func(_ net.Listener) context.Context { return ctx },
+		ReadTimeout:  time.Second * 10,
+		WriteTimeout: time.Second * 10,
+	}
+
+	lwl := &linkWSListener{
+		ch:         ch,
+		ctx:        ctx,
+		httpServer: httpServer,
+		listener:   nl,
+	}
+	go lwl.httpServer.Serve(nl) // nolint:errcheck
+	return lwl, nil
+}

src/core/link_wss.go

@@ -0,0 +1,72 @@
+package core
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+	"net"
+	"net/http"
+	"net/url"
+
+	"github.com/Arceliar/phony"
+	"github.com/coder/websocket"
+)
+
+type linkWSS struct {
+	phony.Inbox
+	*links
+	tlsconfig *tls.Config
+}
+
+type linkWSSConn struct {
+	net.Conn
+}
+
+func (l *links) newLinkWSS() *linkWSS {
+	lwss := &linkWSS{
+		links:     l,
+		tlsconfig: l.core.config.tls.Clone(),
+	}
+	return lwss
+}
+
+func (l *linkWSS) dial(ctx context.Context, url *url.URL, info linkInfo, options linkOptions) (net.Conn, error) {
+	tlsconfig := l.tlsconfig.Clone()
+	return l.links.findSuitableIP(url, func(hostname string, ip net.IP, port int) (net.Conn, error) {
+		tlsconfig.ServerName = hostname
+		tlsconfig.MinVersion = tls.VersionTLS12
+		tlsconfig.MaxVersion = tls.VersionTLS13
+		u := *url
+		u.Host = net.JoinHostPort(ip.String(), fmt.Sprintf("%d", port))
+		addr := &net.TCPAddr{
+			IP:   ip,
+			Port: port,
+		}
+		dialer, err := l.tcp.dialerFor(addr, info.sintf)
+		if err != nil {
+			return nil, err
+		}
+		wsconn, _, err := websocket.Dial(ctx, u.String(), &websocket.DialOptions{
+			HTTPClient: &http.Client{
+				Transport: &http.Transport{
+					Proxy:           http.ProxyFromEnvironment,
+					Dial:            dialer.Dial,
+					DialContext:     dialer.DialContext,
+					TLSClientConfig: tlsconfig,
+				},
+			},
+			Subprotocols: []string{"ygg-ws"},
+			Host:         hostname,
+		})
+		if err != nil {
+			return nil, err
+		}
+		return &linkWSSConn{
+			Conn: websocket.NetConn(ctx, wsconn, websocket.MessageBinary),
+		}, nil
+	})
+}
+
+func (l *linkWSS) listen(ctx context.Context, url *url.URL, _ string) (net.Listener, error) {
+	return nil, fmt.Errorf("WSS listener not supported, use WS listener behind reverse proxy instead")
+}

src/core/nodeinfo.go

@@ -0,0 +1,173 @@
+package core
+
+import (
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"runtime"
+	"time"
+
+	iwt "github.com/Arceliar/ironwood/types"
+	"github.com/Arceliar/phony"
+	"github.com/yggdrasil-network/yggdrasil-go/src/version"
+)
+
+type nodeinfo struct {
+	phony.Inbox
+	proto      *protoHandler
+	myNodeInfo json.RawMessage
+	callbacks  map[keyArray]nodeinfoCallback
+}
+
+type nodeinfoCallback struct {
+	call    func(nodeinfo json.RawMessage)
+	created time.Time
+}
+
+// Initialises the nodeinfo cache/callback maps, and starts a goroutine to keep
+// the cache/callback maps clean of stale entries
+func (m *nodeinfo) init(proto *protoHandler) {
+	m.Act(nil, func() {
+		m._init(proto)
+	})
+}
+
+func (m *nodeinfo) _init(proto *protoHandler) {
+	m.proto = proto
+	m.callbacks = make(map[keyArray]nodeinfoCallback)
+	m._cleanup()
+}
+
+func (m *nodeinfo) _cleanup() {
+	for boxPubKey, callback := range m.callbacks {
+		if time.Since(callback.created) > time.Minute {
+			delete(m.callbacks, boxPubKey)
+		}
+	}
+	time.AfterFunc(time.Second*30, func() {
+		m.Act(nil, m._cleanup)
+	})
+}
+
+func (m *nodeinfo) _addCallback(sender keyArray, call func(nodeinfo json.RawMessage)) {
+	m.callbacks[sender] = nodeinfoCallback{
+		created: time.Now(),
+		call:    call,
+	}
+}
+
+// Handles the callback, if there is one
+func (m *nodeinfo) _callback(sender keyArray, nodeinfo json.RawMessage) {
+	if callback, ok := m.callbacks[sender]; ok {
+		callback.call(nodeinfo)
+		delete(m.callbacks, sender)
+	}
+}
+
+func (m *nodeinfo) _getNodeInfo() json.RawMessage {
+	return m.myNodeInfo
+}
+
+// Set the current node's nodeinfo
+func (m *nodeinfo) setNodeInfo(given map[string]interface{}, privacy bool) (err error) {
+	phony.Block(m, func() {
+		err = m._setNodeInfo(given, privacy)
+	})
+	return
+}
+
+func (m *nodeinfo) _setNodeInfo(given map[string]interface{}, privacy bool) error {
+	newnodeinfo := make(map[string]interface{}, len(given))
+	for k, v := range given {
+		newnodeinfo[k] = v
+	}
+	if !privacy {
+		newnodeinfo["buildname"] = version.BuildName()
+		newnodeinfo["buildversion"] = version.BuildVersion()
+		newnodeinfo["buildplatform"] = runtime.GOOS
+		newnodeinfo["buildarch"] = runtime.GOARCH
+	}
+	newjson, err := json.Marshal(newnodeinfo)
+	switch {
+	case err != nil:
+		return fmt.Errorf("NodeInfo marshalling failed: %w", err)
+	case len(newjson) > 16384:
+		return fmt.Errorf("NodeInfo exceeds max length of 16384 bytes")
+	default:
+		m.myNodeInfo = newjson
+		return nil
+	}
+}
+
+func (m *nodeinfo) sendReq(from phony.Actor, key keyArray, callback func(nodeinfo json.RawMessage)) {
+	m.Act(from, func() {
+		m._sendReq(key, callback)
+	})
+}
+
+func (m *nodeinfo) _sendReq(key keyArray, callback func(nodeinfo json.RawMessage)) {
+	if callback != nil {
+		m._addCallback(key, callback)
+	}
+	_, _ = m.proto.core.PacketConn.WriteTo([]byte{typeSessionProto, typeProtoNodeInfoRequest}, iwt.Addr(key[:]))
+}
+
+func (m *nodeinfo) handleReq(from phony.Actor, key keyArray) {
+	m.Act(from, func() {
+		m._sendRes(key)
+	})
+}
+
+func (m *nodeinfo) handleRes(from phony.Actor, key keyArray, info json.RawMessage) {
+	m.Act(from, func() {
+		m._callback(key, info)
+	})
+}
+
+func (m *nodeinfo) _sendRes(key keyArray) {
+	bs := append([]byte{typeSessionProto, typeProtoNodeInfoResponse}, m._getNodeInfo()...)
+	_, _ = m.proto.core.PacketConn.WriteTo(bs, iwt.Addr(key[:]))
+}
+
+// Admin socket stuff
+
+type GetNodeInfoRequest struct {
+	Key string `json:"key"`
+}
+type GetNodeInfoResponse map[string]json.RawMessage
+
+func (m *nodeinfo) nodeInfoAdminHandler(in json.RawMessage) (interface{}, error) {
+	var req GetNodeInfoRequest
+	if err := json.Unmarshal(in, &req); err != nil {
+		return nil, err
+	}
+	if req.Key == "" {
+		return nil, fmt.Errorf("No remote public key supplied")
+	}
+	var key keyArray
+	var kbs []byte
+	var err error
+	if kbs, err = hex.DecodeString(req.Key); err != nil {
+		return nil, fmt.Errorf("Failed to decode public key: %w", err)
+	}
+	copy(key[:], kbs)
+	ch := make(chan []byte, 1)
+	m.sendReq(nil, key, func(info json.RawMessage) {
+		ch <- info
+	})
+	timer := time.NewTimer(6 * time.Second)
+	defer timer.Stop()
+	select {
+	case <-timer.C:
+		return nil, errors.New("Timed out waiting for response")
+	case info := <-ch:
+		var msg json.RawMessage
+		if err := msg.UnmarshalJSON(info); err != nil {
+			return nil, err
+		}
+		key := hex.EncodeToString(kbs[:])
+		res := GetNodeInfoResponse{key: msg}
+		return res, nil
+	}
+}

src/core/options.go

@@ -0,0 +1,61 @@
+package core
+
+import (
+	"crypto/ed25519"
+	"fmt"
+	"net"
+	"net/url"
+)
+
+func (c *Core) _applyOption(opt SetupOption) (err error) {
+	switch v := opt.(type) {
+	case Peer:
+		u, err := url.Parse(v.URI)
+		if err != nil {
+			return fmt.Errorf("unable to parse peering URI: %w", err)
+		}
+		err = c.links.add(u, v.SourceInterface, linkTypePersistent)
+		switch err {
+		case ErrLinkAlreadyConfigured:
+			// Don't return this error, otherwise we'll panic at startup
+			// if there are multiple of the same peer configured
+			return nil
+		default:
+			return err
+		}
+	case ListenAddress:
+		c.config._listeners[v] = struct{}{}
+	case PeerFilter:
+		c.config.peerFilter = v
+	case NodeInfo:
+		c.config.nodeinfo = v
+	case NodeInfoPrivacy:
+		c.config.nodeinfoPrivacy = v
+	case AllowedPublicKey:
+		pk := [32]byte{}
+		copy(pk[:], v)
+		c.config._allowedPublicKeys[pk] = struct{}{}
+	}
+	return
+}
+
+type SetupOption interface {
+	isSetupOption()
+}
+
+type ListenAddress string
+type Peer struct {
+	URI             string
+	SourceInterface string
+}
+type NodeInfo map[string]interface{}
+type NodeInfoPrivacy bool
+type AllowedPublicKey ed25519.PublicKey
+type PeerFilter func(net.IP) bool
+
+func (a ListenAddress) isSetupOption()    {}
+func (a Peer) isSetupOption()             {}
+func (a NodeInfo) isSetupOption()         {}
+func (a NodeInfoPrivacy) isSetupOption()  {}
+func (a AllowedPublicKey) isSetupOption() {}
+func (a PeerFilter) isSetupOption()       {}

src/core/options_test.go

@@ -0,0 +1,41 @@
+package core
+
+import (
+	"net/url"
+	"testing"
+
+	"github.com/yggdrasil-network/yggdrasil-go/src/config"
+)
+
+// Tests that duplicate peers in the configuration file
+// won't cause an error when the node starts. Otherwise
+// we can panic unnecessarily.
+func TestDuplicatePeerAtStartup(t *testing.T) {
+	cfg := config.GenerateConfig()
+	for i := 0; i < 5; i++ {
+		cfg.Peers = append(cfg.Peers, "tcp://1.2.3.4:4321")
+	}
+	if _, err := New(cfg.Certificate, nil); err != nil {
+		t.Fatal(err)
+	}
+}
+
+// Tests that duplicate peers given to us through the
+// API will still error as expected, even if they didn't
+// at startup. We expect to notify the user through the
+// admin socket if they try to add a peer that is already
+// configured.
+func TestDuplicatePeerFromAPI(t *testing.T) {
+	cfg := config.GenerateConfig()
+	c, err := New(cfg.Certificate, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	u, _ := url.Parse("tcp://1.2.3.4:4321")
+	if err := c.AddPeer(u, ""); err != nil {
+		t.Fatalf("Adding peer failed on first attempt: %s", err)
+	}
+	if err := c.AddPeer(u, ""); err == nil {
+		t.Fatalf("Adding peer should have failed on second attempt")
+	}
+}

src/core/pool.go

@@ -0,0 +1,17 @@
+package core
+
+import "sync"
+
+var bytePool = sync.Pool{New: func() interface{} { return []byte(nil) }}
+
+func allocBytes(size int) []byte {
+	bs := bytePool.Get().([]byte)
+	if cap(bs) < size {
+		bs = make([]byte, size)
+	}
+	return bs[:size]
+}
+
+func freeBytes(bs []byte) {
+	bytePool.Put(bs[:0]) //nolint:staticcheck
+}

src/core/proto.go

@@ -0,0 +1,376 @@
+package core
+
+import (
+	"crypto/ed25519"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net"
+	"time"
+
+	iwt "github.com/Arceliar/ironwood/types"
+	"github.com/Arceliar/phony"
+
+	"github.com/yggdrasil-network/yggdrasil-go/src/address"
+)
+
+const (
+	typeDebugDummy = iota
+	typeDebugGetSelfRequest
+	typeDebugGetSelfResponse
+	typeDebugGetPeersRequest
+	typeDebugGetPeersResponse
+	typeDebugGetTreeRequest
+	typeDebugGetTreeResponse
+)
+
+type reqInfo struct {
+	callback func([]byte)
+	timer    *time.Timer // time.AfterFunc cleanup
+}
+
+type keyArray [ed25519.PublicKeySize]byte
+
+type protoHandler struct {
+	phony.Inbox
+
+	core     *Core
+	nodeinfo nodeinfo
+
+	selfRequests  map[keyArray]*reqInfo
+	peersRequests map[keyArray]*reqInfo
+	treeRequests  map[keyArray]*reqInfo
+}
+
+func (p *protoHandler) init(core *Core) {
+	p.core = core
+	p.nodeinfo.init(p)
+
+	p.selfRequests = make(map[keyArray]*reqInfo)
+	p.peersRequests = make(map[keyArray]*reqInfo)
+	p.treeRequests = make(map[keyArray]*reqInfo)
+}
+
+// Common functions
+
+func (p *protoHandler) handleProto(from phony.Actor, key keyArray, bs []byte) {
+	if len(bs) == 0 {
+		return
+	}
+	switch bs[0] {
+	case typeProtoDummy:
+	case typeProtoNodeInfoRequest:
+		p.nodeinfo.handleReq(p, key)
+	case typeProtoNodeInfoResponse:
+		p.nodeinfo.handleRes(p, key, bs[1:])
+	case typeProtoDebug:
+		p.handleDebug(from, key, bs[1:])
+	}
+}
+
+func (p *protoHandler) handleDebug(from phony.Actor, key keyArray, bs []byte) {
+	p.Act(from, func() {
+		p._handleDebug(key, bs)
+	})
+}
+
+func (p *protoHandler) _handleDebug(key keyArray, bs []byte) {
+	if len(bs) == 0 {
+		return
+	}
+	switch bs[0] {
+	case typeDebugDummy:
+	case typeDebugGetSelfRequest:
+		p._handleGetSelfRequest(key)
+	case typeDebugGetSelfResponse:
+		p._handleGetSelfResponse(key, bs[1:])
+	case typeDebugGetPeersRequest:
+		p._handleGetPeersRequest(key)
+	case typeDebugGetPeersResponse:
+		p._handleGetPeersResponse(key, bs[1:])
+	case typeDebugGetTreeRequest:
+		p._handleGetTreeRequest(key)
+	case typeDebugGetTreeResponse:
+		p._handleGetTreeResponse(key, bs[1:])
+	}
+}
+
+func (p *protoHandler) _sendDebug(key keyArray, dType uint8, data []byte) {
+	bs := append([]byte{typeSessionProto, typeProtoDebug, dType}, data...)
+	_, _ = p.core.PacketConn.WriteTo(bs, iwt.Addr(key[:]))
+}
+
+// Get self
+
+func (p *protoHandler) sendGetSelfRequest(key keyArray, callback func([]byte)) {
+	p.Act(nil, func() {
+		if info := p.selfRequests[key]; info != nil {
+			info.timer.Stop()
+			delete(p.selfRequests, key)
+		}
+		info := new(reqInfo)
+		info.callback = callback
+		info.timer = time.AfterFunc(time.Minute, func() {
+			p.Act(nil, func() {
+				if p.selfRequests[key] == info {
+					delete(p.selfRequests, key)
+				}
+			})
+		})
+		p.selfRequests[key] = info
+		p._sendDebug(key, typeDebugGetSelfRequest, nil)
+	})
+}
+
+func (p *protoHandler) _handleGetSelfRequest(key keyArray) {
+	self := p.core.GetSelf()
+	res := map[string]string{
+		"key":             hex.EncodeToString(self.Key[:]),
+		"routing_entries": fmt.Sprintf("%v", self.RoutingEntries),
+	}
+	bs, err := json.Marshal(res) // FIXME this puts keys in base64, not hex
+	if err != nil {
+		return
+	}
+	p._sendDebug(key, typeDebugGetSelfResponse, bs)
+}
+
+func (p *protoHandler) _handleGetSelfResponse(key keyArray, bs []byte) {
+	if info := p.selfRequests[key]; info != nil {
+		info.timer.Stop()
+		info.callback(bs)
+		delete(p.selfRequests, key)
+	}
+}
+
+// Get peers
+
+func (p *protoHandler) sendGetPeersRequest(key keyArray, callback func([]byte)) {
+	p.Act(nil, func() {
+		if info := p.peersRequests[key]; info != nil {
+			info.timer.Stop()
+			delete(p.peersRequests, key)
+		}
+		info := new(reqInfo)
+		info.callback = callback
+		info.timer = time.AfterFunc(time.Minute, func() {
+			p.Act(nil, func() {
+				if p.peersRequests[key] == info {
+					delete(p.peersRequests, key)
+				}
+			})
+		})
+		p.peersRequests[key] = info
+		p._sendDebug(key, typeDebugGetPeersRequest, nil)
+	})
+}
+
+func (p *protoHandler) _handleGetPeersRequest(key keyArray) {
+	peers := p.core.GetPeers()
+	var bs []byte
+	for _, pinfo := range peers {
+		tmp := append(bs, pinfo.Key[:]...)
+		const responseOverhead = 2 // 1 debug type, 1 getpeers type
+		if uint64(len(tmp))+responseOverhead > p.core.MTU() {
+			break
+		}
+		bs = tmp
+	}
+	p._sendDebug(key, typeDebugGetPeersResponse, bs)
+}
+
+func (p *protoHandler) _handleGetPeersResponse(key keyArray, bs []byte) {
+	if info := p.peersRequests[key]; info != nil {
+		info.timer.Stop()
+		info.callback(bs)
+		delete(p.peersRequests, key)
+	}
+}
+
+// Get Tree
+
+func (p *protoHandler) sendGetTreeRequest(key keyArray, callback func([]byte)) {
+	p.Act(nil, func() {
+		if info := p.treeRequests[key]; info != nil {
+			info.timer.Stop()
+			delete(p.treeRequests, key)
+		}
+		info := new(reqInfo)
+		info.callback = callback
+		info.timer = time.AfterFunc(time.Minute, func() {
+			p.Act(nil, func() {
+				if p.treeRequests[key] == info {
+					delete(p.treeRequests, key)
+				}
+			})
+		})
+		p.treeRequests[key] = info
+		p._sendDebug(key, typeDebugGetTreeRequest, nil)
+	})
+}
+
+func (p *protoHandler) _handleGetTreeRequest(key keyArray) {
+	dinfos := p.core.GetTree()
+	var bs []byte
+	for _, dinfo := range dinfos {
+		tmp := append(bs, dinfo.Key[:]...)
+		const responseOverhead = 2 // 1 debug type, 1 gettree type
+		if uint64(len(tmp))+responseOverhead > p.core.MTU() {
+			break
+		}
+		bs = tmp
+	}
+	p._sendDebug(key, typeDebugGetTreeResponse, bs)
+}
+
+func (p *protoHandler) _handleGetTreeResponse(key keyArray, bs []byte) {
+	if info := p.treeRequests[key]; info != nil {
+		info.timer.Stop()
+		info.callback(bs)
+		delete(p.treeRequests, key)
+	}
+}
+
+// Admin socket stuff for "Get self"
+
+type DebugGetSelfRequest struct {
+	Key string `json:"key"`
+}
+
+type DebugGetSelfResponse map[string]interface{}
+
+func (p *protoHandler) getSelfHandler(in json.RawMessage) (interface{}, error) {
+	var req DebugGetSelfRequest
+	if err := json.Unmarshal(in, &req); err != nil {
+		return nil, err
+	}
+	var key keyArray
+	var kbs []byte
+	var err error
+	if kbs, err = hex.DecodeString(req.Key); err != nil {
+		return nil, err
+	}
+	if len(kbs) != ed25519.PublicKeySize {
+		return nil, fmt.Errorf("invalid public key length")
+	}
+	copy(key[:], kbs)
+	ch := make(chan []byte, 1)
+	p.sendGetSelfRequest(key, func(info []byte) {
+		ch <- info
+	})
+	select {
+	case <-time.After(6 * time.Second):
+		return nil, errors.New("timeout")
+	case info := <-ch:
+		var msg json.RawMessage
+		if err := msg.UnmarshalJSON(info); err != nil {
+			return nil, err
+		}
+		ip := net.IP(address.AddrForKey(kbs)[:])
+		res := DebugGetSelfResponse{ip.String(): msg}
+		return res, nil
+	}
+}
+
+// Admin socket stuff for "Get peers"
+
+type DebugGetPeersRequest struct {
+	Key string `json:"key"`
+}
+
+type DebugGetPeersResponse map[string]interface{}
+
+func (p *protoHandler) getPeersHandler(in json.RawMessage) (interface{}, error) {
+	var req DebugGetPeersRequest
+	if err := json.Unmarshal(in, &req); err != nil {
+		return nil, err
+	}
+	var key keyArray
+	var kbs []byte
+	var err error
+	if kbs, err = hex.DecodeString(req.Key); err != nil {
+		return nil, err
+	}
+	if len(kbs) != ed25519.PublicKeySize {
+		return nil, fmt.Errorf("invalid public key length")
+	}
+	copy(key[:], kbs)
+	ch := make(chan []byte, 1)
+	p.sendGetPeersRequest(key, func(info []byte) {
+		ch <- info
+	})
+	select {
+	case <-time.After(6 * time.Second):
+		return nil, errors.New("timeout")
+	case info := <-ch:
+		ks := make(map[string][]string)
+		bs := info
+		for len(bs) >= len(key) {
+			ks["keys"] = append(ks["keys"], hex.EncodeToString(bs[:len(key)]))
+			bs = bs[len(key):]
+		}
+		js, err := json.Marshal(ks)
+		if err != nil {
+			return nil, err
+		}
+		var msg json.RawMessage
+		if err := msg.UnmarshalJSON(js); err != nil {
+			return nil, err
+		}
+		ip := net.IP(address.AddrForKey(kbs)[:])
+		res := DebugGetPeersResponse{ip.String(): msg}
+		return res, nil
+	}
+}
+
+// Admin socket stuff for "Get Tree"
+
+type DebugGetTreeRequest struct {
+	Key string `json:"key"`
+}
+
+type DebugGetTreeResponse map[string]interface{}
+
+func (p *protoHandler) getTreeHandler(in json.RawMessage) (interface{}, error) {
+	var req DebugGetTreeRequest
+	if err := json.Unmarshal(in, &req); err != nil {
+		return nil, err
+	}
+	var key keyArray
+	var kbs []byte
+	var err error
+	if kbs, err = hex.DecodeString(req.Key); err != nil {
+		return nil, err
+	}
+	if len(kbs) != ed25519.PublicKeySize {
+		return nil, fmt.Errorf("invalid public key length")
+	}
+	copy(key[:], kbs)
+	ch := make(chan []byte, 1)
+	p.sendGetTreeRequest(key, func(info []byte) {
+		ch <- info
+	})
+	select {
+	case <-time.After(6 * time.Second):
+		return nil, errors.New("timeout")
+	case info := <-ch:
+		ks := make(map[string][]string)
+		bs := info
+		for len(bs) >= len(key) {
+			ks["keys"] = append(ks["keys"], hex.EncodeToString(bs[:len(key)]))
+			bs = bs[len(key):]
+		}
+		js, err := json.Marshal(ks)
+		if err != nil {
+			return nil, err
+		}
+		var msg json.RawMessage
+		if err := msg.UnmarshalJSON(js); err != nil {
+			return nil, err
+		}
+		ip := net.IP(address.AddrForKey(kbs)[:])
+		res := DebugGetTreeResponse{ip.String(): msg}
+		return res, nil
+	}
+}

src/core/tls.go

@@ -0,0 +1,29 @@
+package core
+
+import (
+	"crypto/tls"
+	"crypto/x509"
+)
+
+func (c *Core) generateTLSConfig(cert *tls.Certificate) (*tls.Config, error) {
+	config := &tls.Config{
+		Certificates: []tls.Certificate{*cert},
+		ClientAuth:   tls.NoClientCert,
+		GetClientCertificate: func(cri *tls.CertificateRequestInfo) (*tls.Certificate, error) {
+			return cert, nil
+		},
+		VerifyPeerCertificate: c.verifyTLSCertificate,
+		VerifyConnection:      c.verifyTLSConnection,
+		InsecureSkipVerify:    true,
+		MinVersion:            tls.VersionTLS13,
+	}
+	return config, nil
+}
+
+func (c *Core) verifyTLSCertificate(_ [][]byte, _ [][]*x509.Certificate) error {
+	return nil
+}
+
+func (c *Core) verifyTLSConnection(_ tls.ConnectionState) error {
+	return nil
+}