[Minor] Allow to process IPv6 addresses started with `IPv6:`

diff --git a/src/libutil/addr.c b/src/libutil/addr.c
index 68dcb4e8e0d390aab5e230823f5f607b5c0407a3..022a9455908abcc43099b4c220cd284662141e94 100644 (file)
--- a/src/libutil/addr.c
+++ b/src/libutil/addr.c
@@ -721,6 +721,7 @@ rspamd_parse_inet_address_common (rspamd_inet_addr_t **target,
        }
 
        if (src[0] == '[') {
+               const gchar *ip_start;
                /* Ipv6 address in format [::1]:port or just [::1] */
                end = memchr (src + 1, ']', srclen - 1);
 
@@ -734,7 +735,17 @@ rspamd_parse_inet_address_common (rspamd_inet_addr_t **target,
                        return FALSE;
                }
 
-               rspamd_strlcpy (ipbuf, src + 1, iplen + 1);
+               if (iplen > sizeof ("IPv6:") - 1 &&
+                       g_ascii_strncasecmp (src + 1, "IPv6:", sizeof ("IPv6:") - 1) == 0) {
+                       /* Special case, SMTP conformant IPv6 address */
+                       ip_start = src + 1 + sizeof ("IPv6:") - 1;
+                       iplen -= sizeof ("IPv6:") - 1;
+               }
+               else {
+                       ip_start = src + 1;
+               }
+
+               rspamd_strlcpy (ipbuf, ip_start, iplen + 1);
 
                if (rspamd_parse_inet_address_ip6 (ipbuf, iplen,
                                                &su.s6.sin6_addr)) {