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CONNECT_TO: fail attempt to set an IPv6 numerical without IPv6 support 

Bug: https://curl.haxx.se/mail/lib-2018-01/0087.html
Reported-by: John Hascall

Closes #2257
This commit is contained in:
Daniel Stenberg 2018-01-22 15:28:13 +01:00
parent 96186de1f7
commit eb6e3c4f6e
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GPG Key ID: 5CC908FDB71E12C2
1 changed files with 7 additions and 1 deletions
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8
lib/url.c
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@ -5,7 +5,7 @@
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
* Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
@ -3612,6 +3612,7 @@ static CURLcode parse_connect_to_host_port(struct Curl_easy *data,
/* detect and extract RFC6874-style IPv6-addresses */
if(*hostptr == '[') {
#ifdef ENABLE_IPV6
char *ptr = ++hostptr; /* advance beyond the initial bracket */
while(*ptr && (ISXDIGIT(*ptr) || (*ptr == ':') || (*ptr == '.')))
ptr++;
@ -3635,6 +3636,11 @@ static CURLcode parse_connect_to_host_port(struct Curl_easy *data,
* hostptr first, but I can't see anything wrong with that as no host
* name nor a numeric can legally start with a bracket.
*/
#else
failf(data, "Use of IPv6 in *_CONNECT_TO without IPv6 support built-in!");
free(host_dup);
return CURLE_NOT_BUILT_IN;
#endif
}
/* Get port number off server.com:1080 */