From: Chris Packham <judge.packham@gmail.com>
Date: Wed, 4 Jan 2017 00:36:26 +0000 (+1300)
Subject: lib: net_utils: enforce '.' as octet separator in string_to_ip
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=f267e40f9679fec02a3166577c78cb290017b7e3;p=project%2Fbcm63xx%2Fu-boot.git

lib: net_utils: enforce '.' as octet separator in string_to_ip

Ensure '.' is used to separate octets. If another character is seen
reject the string outright and return 0.0.0.0.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
---

diff --git a/lib/net_utils.c b/lib/net_utils.c
index 8f81e78010..d06be22849 100644
--- a/lib/net_utils.c
+++ b/lib/net_utils.c
@@ -28,6 +28,10 @@ struct in_addr string_to_ip(const char *s)
 			addr.s_addr = 0;
 			return addr;
 		}
+		if (i != 3 && *e != '.') {
+			addr.s_addr = 0;
+			return addr;
+		}
 		addr.s_addr <<= 8;
 		addr.s_addr |= (val & 0xFF);
 		if (s) {