yggdrasil-network/yggdrasil-go
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Update comments in configuration and some godoc descriptions

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This commit is contained in:
Neil Alexander 2018-11-06 22:57:53 +00:00
parent a3a53f92c3
commit 39dab53ac7
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GPG key ID: A02A2019A2BB0944
3 changed files with 23 additions and 8 deletions
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13
src/yggdrasil/ckr.go
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@ -28,6 +28,7 @@ type cryptokey_route struct {
destination []byte
}
// Initialise crypto-key routing. This must be done before any other CKR calls.
func (c *cryptokey) init(core *Core) {
c.core = core
c.ipv4routes = make([]cryptokey_route, 0)
@ -38,14 +39,19 @@ func (c *cryptokey) init(core *Core) {
c.ipv6sources = make([]net.IPNet, 0)
}
// Enable or disable crypto-key routing.
func (c *cryptokey) setEnabled(enabled bool) {
c.enabled = enabled
}
// Check if crypto-key routing is enabled.
func (c *cryptokey) isEnabled() bool {
return c.enabled
}
// Check whether the given address (with the address length specified in bytes)
// matches either the current node's address, the node's routed subnet or the
// list of subnets specified in IPv4Sources/IPv6Sources.
func (c *cryptokey) isValidSource(addr address, addrlen int) bool {
ip := net.IP(addr[:addrlen])
@ -86,6 +92,8 @@ func (c *cryptokey) isValidSource(addr address, addrlen int) bool {
return false
}
// Adds a source subnet, which allows traffic with these source addresses to
// be tunnelled using crypto-key routing.
func (c *cryptokey) addSourceSubnet(cidr string) error {
// Is the CIDR we've been given valid?
_, ipnet, err := net.ParseCIDR(cidr)
@ -121,6 +129,8 @@ func (c *cryptokey) addSourceSubnet(cidr string) error {
return nil
}
// Adds a destination route for the given CIDR to be tunnelled to the node
// with the given BoxPubKey.
func (c *cryptokey) addRoute(cidr string, dest string) error {
// Is the CIDR we've been given valid?
ipaddr, ipnet, err := net.ParseCIDR(cidr)
@ -190,6 +200,9 @@ func (c *cryptokey) addRoute(cidr string, dest string) error {
return errors.New("Unspecified error")
}
// Looks up the most specific route for the given address (with the address
// length specified in bytes) from the crypto-key routing table. An error is
// returned if the address is not suitable or no route was found.
func (c *cryptokey) getPublicKeyForAddress(addr address, addrlen int) (boxPubKey, error) {
// Check if the address is a valid Yggdrasil address - if so it
// is exempt from all CKR checking