From 5bbfdddaaa586cd6d5b20ea5b6c36d8867fa3d08 Mon Sep 17 00:00:00 2001
From: Grigory Shipunov
Date: Tue, 21 Jan 2025 00:16:31 +0000
Subject: proxy authentik and dav with sso

---
 hosts/cloud/proxy/dav.nix | 64 +++++++++++++++++++++++++++++------------------
 1 file changed, 40 insertions(+), 24 deletions(-)

(limited to 'hosts/cloud/proxy/dav.nix')

diff --git a/hosts/cloud/proxy/dav.nix b/hosts/cloud/proxy/dav.nix
index d3bf7fb..40db331 100644
--- a/hosts/cloud/proxy/dav.nix
+++ b/hosts/cloud/proxy/dav.nix
@@ -10,39 +10,55 @@
   services.nginx.virtualHosts."dav.oxapentane.com" = {
     forceSSL = true;
     enableACME = true;
-    locations."/oauth2/" = {
-      proxyPass = "http://10.89.88.11:4180/";
+    # Radicale
+    locations."/" = {
+      proxyPass = "http://radicale";
       extraConfig = ''
-        proxy_set_header Host $host;
-        proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Auth-Request-Redirect $scheme://$host$request_uri;
+        # Radicale stuff
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection $connection_upgrade_keepalive;
+
+        # authentik stuff
+        auth_request     /outpost.goauthentik.io/auth/nginx;
+        error_page       401 = @goauthentik_proxy_signin;
+        auth_request_set $auth_cookie $upstream_http_set_cookie;
+        proxy_set_header       Set-Cookie $auth_cookie;
+
+        # translate headers from the outposts back to the actual upstream
+        auth_request_set $authentik_username $upstream_http_x_authentik_username;
+        auth_request_set $authentik_groups $upstream_http_x_authentik_groups;
+        auth_request_set $authentik_entitlements $upstream_http_x_authentik_entitlements;
+        auth_request_set $authentik_email $upstream_http_x_authentik_email;
+        auth_request_set $authentik_name $upstream_http_x_authentik_name;
+        auth_request_set $authentik_uid $upstream_http_x_authentik_uid;
+
+        proxy_set_header X-authentik-username $authentik_username;
+        proxy_set_header X-Remote-User $authentik_username;
+        proxy_set_header X-authentik-groups $authentik_groups;
+        proxy_set_header X-authentik-entitlements $authentik_entitlements;
+        proxy_set_header X-authentik-email $authentik_email;
+        proxy_set_header X-authentik-name $authentik_name;
+        proxy_set_header X-authentik-uid $authentik_uid;
       '';
     };
-    locations."/oauth2/auth" = {
-      proxyPass = "http://10.89.88.11:4180";
+
+
+    locations."/outpost.goauthentik.io" = {
+      proxyPass = "http://authentik/outpost.goauthentik.io";
       extraConfig = ''
         proxy_set_header Host $host;
-        proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-Uri $request_uri;
-        proxy_set_header Content-Length "";
+        proxy_set_header X-Original-URL $scheme://$http_host$request_uri;
+        proxy_set_header Set-Cookie $auth_cookie;
+        auth_request_set $auth_cookie $upstream_http_set_cookie;
         proxy_pass_request_body off;
+        proxy_set_header Content-Length "";
       '';
     };
-    locations."/" = {
-      proxyPass = "http://radicale/";
+    locations."@goauthentik_proxy_signin" = {
       extraConfig = ''
-        auth_request /oauth2/auth;
-        error_page 401 =403 /oauth2/sign_in;
-
-        auth_request_set $user $upstream_http_x_auth_request_user;
-
-        auth_request_set $auth_cookie $upstream_http_set_cookie;
-        # add_header Set-Cookie $auth_cookie;
-
-        proxy_set_header X-Remote-User $user;
-        proxy_set_header X-User $user;
-        proxy_set_header X-Real-IP $remote_addr;
-
+        internal;
+        proxy_set_header Set-Cookie $auth_cookie;
+        return 302 /outpost.goauthentik.io/start?rd=$request_uri;
       '';
     };
   };
-- 
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