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Bug #66932 User stream filter errors cannot be handled
Submitted: 2014-03-19 11:09 UTC Modified: 2014-04-03 08:50 UTC
From: ezzatron at gmail dot com Assigned:
Status: Not a bug Package: Streams related
PHP Version: 5.5.10 OS: OS X 10.9.2
Private report: No CVE-ID: None
 [2014-03-19 11:09 UTC] ezzatron at gmail dot com
Description:
------------
The constant PSFS_ERR_FATAL used to indicate an error condition in a user stream filter has no effect on the return value of relevant stream functions, and there is no alternative way to detect these errors.

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

class FatalFilter extends php_user_filter
{
    function filter($in, $out, &$consumed, $closing)
    {
        $bucket = stream_bucket_make_writeable($in);

        return PSFS_ERR_FATAL;
    }
}

stream_filter_register('fatal', 'FatalFilter');

$stream = fopen('php://memory', 'wb');
stream_filter_append($stream, 'fatal');
var_dump(fwrite($stream, 'foobar'));
fclose($stream);


Expected result:
----------------
bool(false)

Actual result:
--------------
int(0)

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 [2014-04-03 08:50 UTC] mike@php.net
-Status: Open +Status: Not a bug
 [2014-04-03 08:50 UTC] mike@php.net
fwrite() only returns FALSE on invalid params.

A return value of 0 is pretty indicative of a failure to me.
 
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