Dont show user/pw page when using header authentication

internal/webserver/Webserver.go

@@ -100,6 +100,7 @@ func Start() {
 	mux.HandleFunc("/e2eSetup", requireLogin(showE2ESetup, false))
 	mux.HandleFunc("/error", showError)
 	mux.HandleFunc("/error-auth", showErrorAuth)
+	mux.HandleFunc("/error-header", showErrorHeader)
 	mux.HandleFunc("/error-oauth", showErrorIntOAuth)
 	mux.HandleFunc("/forgotpw", forgotPassword)
 	mux.HandleFunc("/hotlink/", showHotlink)
@@ -278,6 +279,12 @@ func showErrorAuth(w http.ResponseWriter, r *http.Request) {
 	helper.CheckIgnoreTimeout(err)
 }
 
+// Handling of /error-header
+func showErrorHeader(w http.ResponseWriter, r *http.Request) {
+	err := templateFolder.ExecuteTemplate(w, "error_auth_header", genericView{PublicName: configuration.Get().PublicName})
+	helper.CheckIgnoreTimeout(err)
+}
+
 // Handling of /error-oauth
 func showErrorIntOAuth(w http.ResponseWriter, r *http.Request) {
 	view := oauthErrorView{PublicName: configuration.Get().PublicName}
@@ -336,6 +343,10 @@ func showLogin(w http.ResponseWriter, r *http.Request) {
 		redirect(w, "admin")
 		return
 	}
+	if configuration.Get().Authentication.Method == authentication.Header {
+		redirect(w, "error-header")
+		return
+	}
 	if configuration.Get().Authentication.Method == authentication.OAuth2 {
 		// If user clicked logout, force consent
 		if r.URL.Query().Has("consent") {

internal/webserver/web/templates/html_error_header.tmpl

@@ -0,0 +1,16 @@
+{{define "error_auth_header"}}
+{{template "header" .}}
+
+      <div class="row">
+        <div class="col">
+		<div class="card" style="width: 18rem;">
+		  <div class="card-body">
+		    <h2 class="card-title">Unauthorised</h2>
+		    <br>
+		    <p class="card-text">Error: No login information was sent from the authentication provider.</p><br>
+		  </div>
+		</div>
+	    </div>
+    </div>
+{{template "footer"}}    
+{{end}}