From: Vsevolod Stakhov <vsevolod@highsecure.ru>
Date: Wed, 20 Jan 2016 16:24:22 +0000 (+0000)
Subject: Another fix to punycode
X-Git-Tag: 1.1.1~3
X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=9ac81649d3523ee0c21005029f3f6173473e69d7;p=rspamd.git

Another fix to punycode
---

diff --git a/contrib/librdns/packet.c b/contrib/librdns/packet.c
index 6ce3f50fa..c07418604 100644
--- a/contrib/librdns/packet.c
+++ b/contrib/librdns/packet.c
@@ -129,9 +129,9 @@ rdns_format_dns_name (struct rdns_resolver *resolver, const char *in,
 	}
 
 	/* We need to encode */
-
 	p = in;
-	olen = inlen + 1 + sizeof ("xn--") * labels;
+	/* We allocate 4 times more memory as we cannot guarantee encoding bounds */
+	olen = inlen * sizeof (guint32) + 1 + sizeof ("xn--") * labels;
 	*out = malloc (olen + 1);
 
 	if (*out == NULL) {