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 8f81e78010333bb96987febcb874dc74ac7e32c8..d06be22849fb44643e484029c50d2181d6f46344 100644 (file)
--- 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) {