[U-Boot] [PATCH v2 2/2] lib: net_utils: enforce '.' as octet separator in string_to_ip

[Chris Packham]

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 at gmail.com>
---

Changes in v2:
- new
END

 lib/net_utils.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/net_utils.c b/lib/net_utils.c
index 8f81e7801033..d06be22849fb 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) {
-- 
2.11.0.24.ge6920cf