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Bug #59604 http_redirect breaks output with zlib.output_compression=on
Submitted: 2011-02-03 05:51 UTC Modified: 2011-03-24 04:53 UTC
From: delreich at takeit dot se Assigned: mike (profile)
Status: Closed Package: pecl_http (PECL)
PHP Version: 5.3.5 OS: Fedora 14
Private report: No CVE-ID: None
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From: delreich at takeit dot se
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 [2011-02-03 05:51 UTC] delreich at takeit dot se
Description:
------------
Config change: zlib.output_compression = on

Using http_redirect(...) produces uncompressed output
with header 'Content-Encoding: gzip', which will make
user-agents try to decode unencoded text.
Changing http.force_exit make no difference.

Need to disable automatic following of redirects to
actually see this, e.g. with
> curl -sSi --header 'Accept-Encoding: gzip' $url

Using header('Loaction: ...') followed by die(...) works
as one would expect, with output being compressed.

Same happens on CentOS 5.5, php 5.1.6, pecl_http 1.6.5.

Reproduce code:
---------------
<?php

if (!isset($_SERVER['PATH_INFO']) ||
    strpos('/', $_SERVER['PATH_INFO']) !== false) {
    // i.e. no path_info to speak of
    $url = http_build_url(rtrim($_SERVER['SCRIPT_NAME'], '/') . '/redir');
    header('Location: ' . $url);
    die("Redirecting to <a href=\"$url\">$url</a>.\n");
}
elseif ($_SERVER['PATH_INFO'] === '/redir') {
    http_redirect('foobar');
}

header('Content-Type: text/plain');
echo("No redirection this time.\n");


Expected result:
----------------
GET /index.php HTTP/1.1
Host: localhost
Accept: */*
Accept-Encoding: gzip,deflate

HTTP/1.1 302 Found
Date: Thu, 03 Feb 2011 10:03:23 GMT
Server: Apache/2.2.17 (Fedora)
X-Powered-By: PHP/5.3.5
Location: http://localhost/index.php/redir
Content-Encoding: gzip
Vary: Accept-Encoding
Content-Length: 90
Content-Type: text/html; charset=UTF-8

[gzipped content that decodes to:
Redirecting to <a href="http://localhost/index.php/redir">http://localhost/index.php/redir</a>.
]

Actual result:
--------------
GET /index.php/redir HTTP/1.1
Host: localhost
Accept: */*
Accept-Encoding: gzip,deflate

HTTP/1.1 302 Found
Date: Thu, 03 Feb 2011 10:13:50 GMT
Server: Apache/2.2.17 (Fedora)
X-Powered-By: PHP/5.3.5
Location: http://localhost/index.php/foobar
Content-Encoding: gzip
Vary: Accept-Encoding
Content-Length: 98
Content-Type: text/html; charset=UTF-8

Redirecting to <a href="http://localhost/index.php/foobar">http://localhost/index.php/foobar</a>.


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History

AllCommentsChangesGit/SVN commitsRelated reports
 [2011-02-03 05:57 UTC] delreich at takeit dot se
Alternative expected result would be actual result without the content-encoding header.
 [2011-03-24 04:53 UTC] mike@php.net
This bug has been fixed in SVN.

In case this was a documentation problem, the fix will show up at the
end of next Sunday (CET) on pecl.php.net.

In case this was a pecl.php.net website problem, the change will show
up on the website in short time.
 
Thank you for the report, and for helping us make PECL better.


 
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