ImageMagick check not working

Omeka Classic Troubleshooting
1

Hello,
Although there are several topics around with this issue, none of the proposed solutions appear to be working for me.
This is the scenario:

  • Omeka classic 2.7;
  • web site, linux hosting, with ImageMagick installed and properly working (more about this later);

In the Settings->General panel, ImageMagick directory path (IMdp):

  • entering a path different from /usr/bin/ produces an error (‘The ImageMagick directory path does not work.’);
  • entering /usr/bin/ produces no output (exception raised);

Whatever the path, images are not processed.

Tried and run the following script on my web site:

<?php 
$ret = exec('convert -version');
echo $ret; 
?>

The following result is produced:
“Delegates (built-in): bzlib fontconfig freetype jng jpeg png tiff webp x xml zlib”

It looks like the “executeCommand” function in the ExternalImageMagick.php module fails with an exception.

What can I do to make Omeka aware that ImageMagick actually works fine?
Thanks for your time!

ETA: After delving into Omeka source code, I see the convert command is executed using proc_open() (see ExternalImageMagick.php). Unfortunately, running proc_open() on my web site fails with the following message:
**Warning** : proc_open() has been disabled for security reasons
Is there any alternate way to run the convert command other than using proc_open()?

2

OK, after spending some time with php syntax here is my best effort at finding a workaround to proc_open():

    public static function executeCommand($cmd, &$status, &$output, &$errors)
    {
        // Must use exec('convert') because our service provider Aruba.it has
        // disabled proc_open() for unspecified security reasons.
        if ($output = exec($cmd)) {
            $errors = '';
            $status = 0;   // set to success
        } else {
            throw new Omeka_File_Derivative_Exception("Failed to execute command: $cmd.");
            $errors = 'exec unsuccessful';
            $status = 1;	// set to fail
        }
    }

Now this works fine with testing ImageMagick, but still I cannot add pictures nor have the fancy thumbnails everyone seems to be able to show near the items. Every time I try to add a picture, I get the same message:

Omeka has encountered an error
To learn how to see more detailed information about this error, see the Omeka Codex page on [retrieving error messages](http://omeka.org/classic/docs/Troubleshooting/Retrieving_Error_Messages/).

Hmm, looks like I’m stuck. Anyone?

3

I hope no one gets offended if I bump this thread up…

4

Did you try to follow the instructions linked from the error message? That should give you an actual error message instead of that generic one.

5

Thank you, John.
Yes, I tried and uncommented SetEnv APPLICATION_ENV development, but nothing changes and the error message still remains the same.