[Pkg-php-pecl] Bug#784124: php5-imagick: readimage() sends ghostscript PDF error directly to stdout, and cannot be suppressed.

[Michael]

Package: php5-imagick
Version: 3.2.0~rc1-1
Severity: normal

Hi,

This bug appears when reading a PDF with readImage() in imagick-php. Most
errors are thrown as an ImagickException. However, when an out-of-range page is
requested from a PDF, output is also sent directly to standard output, in
addition to the exception. Unlike normal output, it is impossible to suppress
this extra text with the normal tools (catch, @readImage, ob_start(), see
also[1]).

Example ('doc.pdf' contains two blank pages- any short file will work):

<?php
$im = new Imagick();
try {
        $im -> readImage("doc.pdf[5]");
        $im -> destroy();
} catch(ImagickException $e) {
        echo "Error: " . $e -> getMessage() . "\n";
}
?>

Which prints:

Requested FirstPage is greater than the number of pages in the file: 2
   No pages will be processed (FirstPage > LastPage).
Error: Failed to read the file

The extra output (aside from being incorrect) should be triggered as a
notice/warning, or included with the exception. The text appears to be
generated by GhostScript.

See attached test and example doc.

-Michael Billington

[1] http://stackoverflow.com/questions/13299590/how-does-one-suppress-error-
output-when-instantiating-a-class-in-php

-- System Information:
Debian Release: jessie/sid
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16-3-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages php5-imagick depends on:
ii  libc6                          2.19-11
ii  libgomp1                       4.9.1-16
ii  libmagickcore-6.q16-2          8:6.8.9.9-5
ii  libmagickwand-6.q16-2          8:6.8.9.9-5
ii  php5-common [phpapi-20131226]  5.6.7+dfsg-1

Versions of packages php5-imagick recommends:
ii  ghostscript      9.06~dfsg-2
ii  ttf-dejavu-core  2.34-1

php5-imagick suggests no packages.

*** bug-outp.phpt
--TEST--
Output when calling readimage on PDF for out-of-range page
--SKIPIF--
<?php require_once(dirname(__FILE__) . '/skipif.inc');
--FILE--
<?php
$im = new Imagick();
try {
        $im -> readImage("doc.pdf[5]");
        $im -> destroy();
} catch(ImagickException $e) {
        echo "Error: " . $e -> getMessage() . "\n";
}
?>
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