Authentication snippet.

Using vouch.shore.co.il.

snippets/vouch.conf

+# send all requests to the `/validate` endpoint for authorization
+auth_request    /validate;
+
+location = /validate {
+  # forward the /validate request to Vouch Proxy
+  proxy_pass                        https://vouch.shore.co.il/validate;
+  proxy_http_version                1.1;
+  internal;
+
+  # Vouch Proxy only acts on the request headers
+  proxy_pass_request_body           off;
+  proxy_set_header Content-Length   "";
+
+  # optionally add X-Vouch-User as returned by Vouch Proxy along with the request
+  auth_request_set $auth_resp_x_vouch_user $upstream_http_x_vouch_user;
+
+  # these return values are used by the @error401 call
+  auth_request_set                  $auth_resp_jwt $upstream_http_x_vouch_jwt;
+  auth_request_set                  $auth_resp_err $upstream_http_x_vouch_err;
+  auth_request_set                  $auth_resp_failcount $upstream_http_x_vouch_failcount;
+}
+
+# if validate returns `401 not authorized` then forward the request to the error401block
+error_page 401 = @error401;
+
+location @error401 {
+    # redirect to Vouch Proxy for login
+    return 302 https://vouch.shore.co.il/login?url=$scheme://$http_host$request_uri&vouch-failcount=$auth_resp_failcount&X-Vouch-Token=$auth_resp_jwt&error=$auth_resp_err;
+}