From 9df99bbb9171c15b00c5148f54397351eccac95b Mon Sep 17 00:00:00 2001
From: Robert Ransom <rransom.8774@gmail.com>
Date: Thu, 20 Oct 2011 03:17:23 -0700
Subject: [PATCH] Check whether a client port is a Unix socket before using its
 IP addr

Bugfix on commit c1ac0695d5bc64b555c345e4be87b18bab3ae56b, not yet in any
release.  Fixes bug 4091; bug reported by SwissTorHelp.
---
 src/or/config.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/or/config.c b/src/or/config.c
index 388c45f5cf..59bbe1dd69 100644
--- a/src/or/config.c
+++ b/src/or/config.c
@@ -5128,7 +5128,9 @@ static void
 warn_nonlocal_client_ports(const smartlist_t *ports, const char *portname)
 {
   SMARTLIST_FOREACH_BEGIN(ports, const port_cfg_t *, port) {
-    if (!tor_addr_is_internal(&port->addr, 1)) {
+    if (port->is_unix_addr) {
+      /* Unix sockets aren't accessible over a network. */
+    } else if (!tor_addr_is_internal(&port->addr, 1)) {
       log_warn(LD_CONFIG, "You specified a public address for %sPort. "
                "Other people on the Internet might find your computer and "
                "use it as an open proxy. Please don't allow this unless you "