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Bug #66388 Crash on POST with Content-Length:0 and untouched body
Submitted: 2014-01-02 06:16 UTC Modified: 2014-01-02 15:35 UTC
From: sudocoder at ymail dot com Assigned: mike (profile)
Status: Closed Package: pecl_http (PECL)
PHP Version: 5.4.23 OS: Ubuntu 12.04
Private report: No CVE-ID: None
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From: sudocoder at ymail dot com
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 [2014-01-02 06:16 UTC] sudocoder at ymail dot com
Description:
------------
I ran into a segfault while trying to send a GET/POST request to an HTTPS endpoint. Here is some additional information regarding my setup:

HTTP Support	enabled
Extension Version	2.0.3

Used Library	Compiled	Linked
libz	1.2.3.4	1.2.3.4
libcurl	7.22.0	7.22.0
libevent	disabled	disabled

Directive	Local Value	Master Value
http.etag.mode	crc32b	crc32b

Server version: Apache/2.2.22 (Ubuntu)

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

    use http\Client,
        http\Client\Request;

    $client = new Client();
    $request = new Request('GET', 'https://google.com/');
    $client->enqueue($request);
    $client->send();

?>

Expected result:
----------------
Expected to get Google

Actual result:
--------------
Program received signal SIGSEGV, Segmentation fault.
0xb5d6b120 in _php_stream_read () from /usr/lib/apache2/modules/libphp5.so
(gdb) bt
#0  0xb5d6b120 in _php_stream_read () from /usr/lib/apache2/modules/libphp5.so
#1  0xb59a6685 in php_http_curle_read_callback (data=0xb8b16101, len=1, n=16384,
    ctx=0xb7620ac0) at /tmp/pear/temp/pecl_http/php_http_client_curl.c:181
#2  0xb6b1458f in Curl_fillreadbuffer () from /usr/lib/i386-linux-gnu/libcurl.so.4
#3  0xb6b15301 in Curl_readwrite () from /usr/lib/i386-linux-gnu/libcurl.so.4
#4  0xb6b1f5e8 in ?? () from /usr/lib/i386-linux-gnu/libcurl.so.4
#5  0xb6b1fbdc in curl_multi_perform () from /usr/lib/i386-linux-gnu/libcurl.so.4
#6  0xb59a778f in php_http_client_curl_once (h=0xb6cac550)
    at /tmp/pear/temp/pecl_http/php_http_client_curl.c:1762
#7  0xb59a79d4 in php_http_client_curl_exec (h=0xb6cac550)
    at /tmp/pear/temp/pecl_http/php_http_client_curl.c:1795
#8  0xb59a40b6 in php_http_client_exec (h=0xb6cac550)
    at /tmp/pear/temp/pecl_http/php_http_client.c:291
#9  0xb59a416f in zim_HttpClient_send (ht=0, return_value=0xb6cac7e0,
    return_value_ptr=0x0, this_ptr=0xb6cac31c, return_value_used=0)
    at /tmp/pear/temp/pecl_http/php_http_client.c:794
#10 0xb5e674d6 in ?? () from /usr/lib/apache2/modules/libphp5.so
#11 0xb5e230b5 in execute () from /usr/lib/apache2/modules/libphp5.so
#12 0xb5db92b9 in zend_execute_scripts () from /usr/lib/apache2/modules/libphp5.so
#13 0xb5d52eee in php_execute_script () from /usr/lib/apache2/modules/libphp5.so

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 [2014-01-02 06:28 UTC] sudocoder at ymail dot com
-Status: Open +Status: Closed
 [2014-01-02 06:28 UTC] sudocoder at ymail dot com
Nevermind.. just had to install libevent
 [2014-01-02 10:40 UTC] mike@php.net
-Status: Closed +Status: Re-Opened -Assigned To: +Assigned To: mike
 [2014-01-02 10:40 UTC] mike@php.net
Sounds like some configure/build bug then, though.
I'll have a closer look.
 [2014-01-02 14:35 UTC] sudocoder at ymail dot com
I've been running into segfaults again and managed to duplicate the issue on both Ubuntu and Mac OSX (both running pecl_http 2.0.3 and php 5.4.23) with the following code. 

<?php

    use http\Client,
        http\Client\Request;

    $client = new Client();
    $request = new Request(
        'POST',
        'https://api.twitter.com/oauth/request_token',
        array(
            'Content-Length' => 0
        )
    );
    $client->enqueue($request);
    $client->send();

?>

GDB backtrace (Ubuntu):

Program received signal SIGSEGV, Segmentation fault.
0xb5d0c120 in _php_stream_read () from /usr/lib/apache2/modules/libphp5.so
(gdb) bt
#0  0xb5d0c120 in _php_stream_read () from /usr/lib/apache2/modules/libphp5.so
#1  0xb5947685 in php_http_curle_read_callback (data=0xb8ac2109, len=1, n=16384,
    ctx=0xb75c1ac0) at /tmp/pear/temp/pecl_http/php_http_client_curl.c:181
#2  0xb6ab558f in Curl_fillreadbuffer () from /usr/lib/i386-linux-gnu/libcurl.so.4
#3  0xb6ab6301 in Curl_readwrite () from /usr/lib/i386-linux-gnu/libcurl.so.4
#4  0xb6ac05e8 in ?? () from /usr/lib/i386-linux-gnu/libcurl.so.4
#5  0xb6ac0bdc in curl_multi_perform () from /usr/lib/i386-linux-gnu/libcurl.so.4
#6  0xb594878f in php_http_client_curl_once (h=0xb6c4cce4)
    at /tmp/pear/temp/pecl_http/php_http_client_curl.c:1762
#7  0xb59489d4 in php_http_client_curl_exec (h=0xb6c4cce4)
    at /tmp/pear/temp/pecl_http/php_http_client_curl.c:1795
#8  0xb59450b6 in php_http_client_exec (h=0xb6c4cce4)
    at /tmp/pear/temp/pecl_http/php_http_client.c:291
#9  0xb594516f in zim_HttpClient_send (ht=0, return_value=0xb6c4d8d0,
    return_value_ptr=0x0, this_ptr=0xb6c4d40c, return_value_used=0)
    at /tmp/pear/temp/pecl_http/php_http_client.c:794
#10 0xb5e084d6 in ?? () from /usr/lib/apache2/modules/libphp5.so
#11 0xb5dc40b5 in execute () from /usr/lib/apache2/modules/libphp5.so
#12 0xb5d5a2b9 in zend_execute_scripts () from /usr/lib/apache2/modules/libphp5.so
#13 0xb5cf3eee in php_execute_script () from /usr/lib/apache2/modules/libphp5.so
#14 0xb5e0afa0 in ?? () from /usr/lib/apache2/modules/libphp5.so
#15 0xb76d675e in ap_run_handler ()
#16 0xb76d6bd6 in ap_invoke_handler ()
#17 0xb76e8a08 in ap_process_request ()
#18 0xb76e54c0 in ?? ()
#19 0xb76ddd2e in ap_run_process_connection ()
#20 0xb76ee2e5 in ?? ()
#21 0xb76eebf9 in ?? ()
#22 0xb76ef4bf in ap_mpm_run ()
#23 0xb76bf78d in main ()
 [2014-01-02 15:05 UTC] mike@php.net
-Summary: Segmentation fault when sending request to HTTPS +Summary: Crash on POST with Content-Length:0 and untouched body
 [2014-01-02 15:05 UTC] mike@php.net
Automatic comment on behalf of mike
Revision: http://git.php.net/?p=pecl/http/pecl_http.git;a=commit;h=71404a21e0937944e47a760e8736905c75f903ea
Log: fix bug #66388 (Crash on POST with Content-Length:0 and untouched body)
 [2014-01-02 15:05 UTC] mike@php.net
-Status: Re-Opened +Status: Closed
 [2014-01-02 15:35 UTC] mike@php.net
Released 2.0.4 with a fix.

Thank you!
 
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