gitea: fix uffd login

(note that this actually has to patch uffd)

pkgs/uffd/default.nix

@@ -5,12 +5,11 @@ python3Packages.buildPythonPackage rec {
   version = "2.0.1";
 
   src = fetchzip {
-    url =
-      "https://git.cccv.de/uffd/uffd/-/archive/v${version}/uffd-v${version}.tar.gz";
+    url = "https://git.cccv.de/uffd/uffd/-/archive/v${version}/uffd-v${version}.tar.gz";
     hash = "sha256-KP4J1bw5u7MklaPu2SBFRNyGgkKOBOpft5MMH+em5M4=";
   };
 
-  patches = [ ./fix-setuppy.patch ./fix-userinfo.patch ];
+  patches = [ ./gitea-magic.patch ./fix-setuppy.patch ./fix-userinfo.patch ];
 
   propagatedBuildInputs = with python3Packages; [
     flask

pkgs/uffd/gitea-magic.patch

@@ -0,0 +1,32 @@
+From e3c0995160a653ef6cd8784b255036585b273b82 Mon Sep 17 00:00:00 2001
+From: stuebinm <stuebinm@disroot.org>
+Date: Wed, 20 Jul 2022 18:02:15 +0200
+Subject: [PATCH] magic gitea patch
+
+---
+ uffd/oauth2/views.py | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+diff --git a/uffd/oauth2/views.py b/uffd/oauth2/views.py
+index d13fd42..94352be 100644
+--- a/uffd/oauth2/views.py
++++ b/uffd/oauth2/views.py
+@@ -230,6 +230,15 @@ def oauth_required(*scopes):
+ @oauth_required('profile')
+ def userinfo():
+ 	user = request.oauth.user
++	client = request.oauth.client_id
++	if client == "gitea":
++		return jsonify(
++	    		id=user.unix_uid,
++    			full_name=user.displayname,
++	    		login=user.loginname,
++			email=user.mail,
++    			groups=[group.name for group in user.groups]
++		)
+ 	return jsonify(
+ 		id=user.unix_uid,
+ 		name=user.displayname,
+-- 
+2.36.0
+

services/gitea.nix

@@ -22,6 +22,8 @@
 
       imports = [ ((import sources.nix-hexchen) { }).profiles.nopersist ];
 
+      environment.systemPackages = [ pkgs.gitea ];
+
       nixpkgs.config.allowUnfree = true;
       networking.firewall.enable = false;
       networking.defaultGateway = {
@@ -63,6 +65,10 @@
             PREFERRED_LICENSES = "Unlicense";
             DEFAULT_BRANCH = "main";
           };
+          oauth2_client = {
+            ACCOUNT_LINKING = "auto";
+            ENABLE_AUTO_REGISTRATION = true;
+          };
           "repository.pull-requests" = {
             DEFAULT_MERGE_STYLE = "merge";
             DEFAULT_MERGE_MESSAGE_ALL_AUTHORS = true;