- /* Got an entry..see if port was specified. */
- while (pp > start_host) {
- if (*pp == ':')
- break; /* yes */
- if (!ISDIGIT(*pp)) {
- /* Found end of digits before we found :, so wasn't a port */
- pp = ptr;
- break;
+ /* Got an entry..see if the port was specified. */
+ if (cc > 0) {
+ while (pp > start_host) {
+ /* a single close square bracket followed by a colon, ']:' indicates
+ an IPv6 address with port */
+ if ((*pp == ']') && (*p == ':'))
+ break; /* found port */
+ /* a single colon, ':' indicates an IPv4 address with port */
+ if ((*pp == ':') && (cc == 1))
+ break; /* found port */
+ if (!(ISDIGIT(*pp) || (*pp == ':'))) {
+ /* Found end of digits before we found :, so wasn't a port */
+ /* must allow ':' for IPv6 case of ']:' indicates we found a port */
+ pp = p = ptr;
+ break;
+ }
+ pp--;
+ p--;
+ }
+ if ((pp != start_host) && ((pp + 1) < ptr)) {
+ /* Found it. Parse over the port number */
+ /* when an IPv6 address is wrapped with square brackets the port
+ starts at pp + 2 */
+ if (*pp == ']')
+ p++; /* move p before ':' */
+ /* p will point to the start of the port */
+ (void)strtol(p, NULL, 10);
+ *pp = 0; /* null terminate host */