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