PHP - exec function - any workaround?

Hello,

My hosting are applying me some restrictions. They don’t let me call the command ‘tar’ via exec function. The ‘tar’ function is called when I want to install any plugin.
This piece of code can be found in this file: /lib/pkp/classes/plugins/PluginHelper.inc.php on line 63

Can I change this function? Exists any alternative or workaround?

Thanks.

Regards,
Héctor

You can unpack plugins and copy to the plugins folder manually (if you have ftp access). Most plugins lie inside plugins/generic folder and themes - plugins/themes. Although, it is better to check plugin’s class first.