feat: Disable auth if passphrase is empty

Disable all auth mechanism when passphrase is empty. That will allow for
a simpler setup.

3 files changed, 20 insertions, 3 deletions

diff --git a/pkg/config/config.go b/pkg/config/config.go
index da6e0e7..c17e6df 100644
--- a/pkg/config/config.go
+++ b/pkg/config/config.go
@@ -113,6 +113,10 @@ func (c *ConfigurationRepository) GetBase64AesKey() []byte {
 	return c.aesKey
 }
 
+func (c *ConfigurationRepository) IsAuthEnabled() bool {
+	return len(c.passphrase) != 0
+}
+
 // GetByName returns configuration of repository for a given name.
 // It returns nil if there is not match for it.
 func (c *ConfigurationRepository) GetByName(name string) *GitRepositoryConfiguration {
diff --git a/pkg/ext/auth.go b/pkg/ext/auth.go
index bb6c0a2..b57e86a 100644
--- a/pkg/ext/auth.go
+++ b/pkg/ext/auth.go
@@ -11,6 +11,14 @@ 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 Authenticate(auth authService) func(next http.HandlerFunc) http.HandlerFunc {
 	return func(next http.HandlerFunc) http.HandlerFunc {
 		return func(w http.ResponseWriter, r *http.Request) {
diff --git a/pkg/handler/router.go b/pkg/handler/router.go
index ee4081b..82ee8fd 100644
--- a/pkg/handler/router.go
+++ b/pkg/handler/router.go
@@ -33,12 +33,17 @@ func MountHandler(
 
 	mux := ext.NewRouter()
 	mux.AddMiddleware(ext.Compress)
-	mux.AddMiddleware(ext.Authenticate(authService))
 	mux.AddMiddleware(ext.Log)
 
+	if configRepo.IsAuthEnabled() {
+		mux.AddMiddleware(ext.Authenticate(authService))
+		mux.HandleFunc("/login/{$}", loginHandler.Login)
+		mux.HandleFunc("/logout/{$}", loginHandler.Logout)
+	} else {
+		mux.AddMiddleware(ext.DisableAuthentication)
+	}
+
 	mux.HandleFunc("/static/{file}", staticHandler)
-	mux.HandleFunc("/login/{$}", loginHandler.Login)
-	mux.HandleFunc("/logout/{$}", loginHandler.Logout)
 	mux.HandleFunc("/{name}/about/{$}", gitHandler.About)
 	mux.HandleFunc("/{name}/", gitHandler.Summary)
 	mux.HandleFunc("/{name}/refs/{$}", gitHandler.Refs)