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|
package ext
import (
"context"
"encoding/base64"
"errors"
"log/slog"
"net/http"
serverconfig "git.gabrielgio.me/cerrado/pkg/config"
)
type authService interface {
ValidateToken(token []byte) (bool, error)
}
func DisableAuthentication(next http.HandlerFunc) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
ctx = context.WithValue(ctx, "disableAuthentication", true)
next(w, r.WithContext(ctx))
}
}
func VerifyRespository(
config *serverconfig.ConfigurationRepository,
) func(next http.HandlerFunc) http.HandlerFunc {
return func(next http.HandlerFunc) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
name := r.PathValue("name")
if name != "" {
repo := config.GetByName(name)
if repo != nil && !repo.Public && !IsLoggedIn(r.Context()) {
NotFound(w, r)
return
}
}
next(w, r)
}
}
}
func Authenticate(auth authService) func(next http.HandlerFunc) http.HandlerFunc {
return func(next http.HandlerFunc) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
cookie, err := r.Cookie("auth")
if err != nil {
if !errors.Is(err, http.ErrNoCookie) {
slog.Error("Error loading cookie", "error", err)
}
next(w, r)
return
}
value, err := base64.StdEncoding.DecodeString(cookie.Value)
if err != nil {
slog.Error("Error decoding", "error", err)
next(w, r)
return
}
valid, err := auth.ValidateToken(value)
if err != nil {
slog.Error("Error validating token", "error", err, "cookie", cookie.Value)
next(w, r)
return
}
ctx := r.Context()
ctx = context.WithValue(ctx, "logged", valid)
slog.Info("Validated token", "valid?", valid)
next(w, r.WithContext(ctx))
}
}
}
func IsLoggedIn(ctx context.Context) bool {
t, ok := ctx.Value("logged").(bool)
return ok && t
}
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