commit d9dd1cf2c3372c0738d3738c4825b671f720aa1c
author Sergey Kandaurov <pluknet@nginx.com> Mon Dec 24 19:55:00 2018 +0300
committer Sergey Kandaurov <pluknet@nginx.com> Mon Dec 24 19:55:00 2018 +0300
tree 783cfdafc4c8f15b255f637fd3f027b8cf67df2c
parent 7753daee6e294b35538d29a04cecfbb9043357c5

Userid: using stub for AF_UNIX addresses.

Previously, AF_UNIX addresses misbehaved as AF_INET, which typically resulted
in $uid_set composed from the middle of sun_path.

src/http/modules/ngx_http_userid_filter_module.c

diff --git a/src/http/modules/ngx_http_userid_filter_module.c b/src/http/modules/ngx_http_userid_filter_module.c
index a1a5493..31cf402 100644
--- a/src/http/modules/ngx_http_userid_filter_module.c
+++ b/src/http/modules/ngx_http_userid_filter_module.c
@@ -545,6 +545,13 @@
 
                 break;
 #endif
+
+#if (NGX_HAVE_UNIX_DOMAIN)
+            case AF_UNIX:
+                ctx->uid_set[0] = 0;
+                break;
+#endif
+
             default: /* AF_INET */
                 sin = (struct sockaddr_in *) c->local_sockaddr;
                 ctx->uid_set[0] = sin->sin_addr.s_addr;