From d3527ec67a9ddad9c189ae360d4f6181d5413bfa Mon Sep 17 00:00:00 2001

From: uhliarik <luhliari@redhat.com>

Date: Mon, 15 Jul 2019 03:42:39 +0000

Subject: [PATCH] Bug 4966: Lower cache_peer hostname (#420)

When parsing entries from /etc/hosts file, they are all lowered

(see bug 3040). If cache_peer hostname is uppercase, it will

lead to DNS resolution failure. Lowering cache_peer host fixes

this issue.

This change may expose broken Squid configurations that

incorrectly relied on non-lowercase peer host names to

bypass Squid's "is this cache_peer different from me?"

check. Though such configurations should encounter

forwarding loop errors later anyway.

---

 src/cache_cf.cc | 1 +

 1 file changed, 1 insertion(+)

diff --git a/src/cache_cf.cc b/src/cache_cf.cc

index 8886b68..e6b231c 100644

--- a/src/cache_cf.cc

+++ b/src/cache_cf.cc

@@ -2075,7 +2075,7 @@ parse_peer(CachePeer ** head)

         self_destruct();

     p->host = xstrdup(token);

-

+    Tolower(p->host);

     p->name = xstrdup(token);

     if ((token = ConfigParser::NextToken()) == NULL)