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Bug #72811 parse_url fails with IPv6 host
Submitted: 2016-08-11 11:47 UTC Modified: -
Votes:4
Avg. Score:4.0 ± 1.0
Reproduced:4 of 4 (100.0%)
Same Version:3 (75.0%)
Same OS:3 (75.0%)
From: me at kelunik dot com Assigned:
Status: Open Package: URL related
PHP Version: Irrelevant OS: *
Private report: No CVE-ID: None
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 [2016-08-11 11:47 UTC] me at kelunik dot com 
Description:
------------
PHP fails to parse the host part if an IPv6 address is used in combination with a port.

Test script:
---------------
<?php

// See https://3v4l.org/7uVWs

var_dump(parse_url("127.0.0.1:80", PHP_URL_HOST));
var_dump(parse_url("[::1]:80", PHP_URL_HOST));

Expected result:
----------------
string(9) "127.0.0.1"
string(5) "[::1]"

Actual result:
--------------
string(9) "127.0.0.1"
NULL

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 [2016-08-13 19:34 UTC] vhu at iki dot fi 
Key point here is the parsing without scheme; everything works already exactly as expected if scheme is specified. This got me thinking. How should this be parsed if there is no port number and should there a difference between IPv4 and IPv6?

Especially consider how does this compares to how browsers parse the URLs? e.g. <a href="[2001::1]/asdf"> vs <a href="http://[2001::1]/asdf">

I'm almost tempted to say that the way IPv4 URL is parsed is incorrect ;)
 [2016-08-16 12:01 UTC] me at kelunik dot com 
Well, there's an explicit comment about parsing "a.com:80" correctly. Same should be for true for IPs. See https://php-lxr.adamharvey.name/source/xref/master/ext/standard/url.c#133
 
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