45 lines
1.1 KiB
Go
45 lines
1.1 KiB
Go
package middleware
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import (
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"fmt"
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"net/http"
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"strings"
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"go.neonxp.ru/mux"
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)
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const basicAuthScheme = "Basic"
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type BasicAuthConfig struct {
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Skipper func(r *http.Request) bool
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Realm string
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Validator func(r *http.Request, login, password string) error
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}
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func DefaultSkipper(*http.Request) bool {
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return false
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}
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func BasicAuth(config BasicAuthConfig) mux.Middleware {
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return func(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if config.Skipper(r) {
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next.ServeHTTP(w, r)
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return
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}
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authString := r.Header.Get("Authorization")
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if authString == "" {
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w.Header().Set("WWW-Authenticate", fmt.Sprintf(`%s realm="%s", charset="UTF-8"`, basicAuthScheme, config.Realm))
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w.WriteHeader(http.StatusUnauthorized)
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return
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}
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parts := strings.SplitN(authString, " ", 2)
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if strings.EqualFold(parts[0], basicAuthScheme) {
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w.Header().Set("WWW-Authenticate", fmt.Sprintf(`%s realm="%s", charset="UTF-8"`, basicAuthScheme, config.Realm))
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w.WriteHeader(http.StatusUnauthorized)
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return
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}
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})
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}
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}
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