roundcube-easy-unsubscribe/easy_unsubscribe.php
Tom Sommer 95b9bb15c6
Improve list-unsubscribe parsing
- Supports multiple URIs
- Fixes bug with URLs not working
- Escapes URI to avoid XSS injections from header
2019-08-25 13:27:58 +02:00

48 lines
1.5 KiB
PHP

<?php
class easy_unsubscribe extends rcube_plugin
{
private $message_headers_done = false;
private $unsubscribe_img;
function init()
{
$rcmail = rcmail::get_instance();
$layout = $rcmail->config->get('layout');
$this->add_hook('message_headers_output', array($this, 'message_headers'));
$this->add_hook('storage_init', array($this, 'storage_init'));
$this->include_stylesheet('easy_unsubscribe.css');
}
public function storage_init($p)
{
$p['fetch_headers'] = trim($p['fetch_headers'] . ' ' . strtoupper('List-Unsubscribe'));
return $p;
}
public function message_headers($p)
{
if($this->message_headers_done===false)
{
$this->message_headers_done = true;
$ListUnsubscribe = $p['headers']->others['list-unsubscribe'];
if ( preg_match_all('/<(.+)>/mU', $ListUnsubscribe, $items, PREG_PATTERN_ORDER) ) {
foreach ( $items[1] as $uri ) {
$this->unsubscribe_img .= '<a class="easy_unsubscribe_link tooltip-right" data-tooltip="Click to unsubscribe" href="'. htmlentities($uri) .'" target="_blank" onclick="return confirm(\'Are you sure you want to unsubscribe?\');"><img src="plugins/easy_unsubscribe/icon.png" alt="Unsubscribe" /></a>';
}
}
}
if(isset($p['output']['subject']))
{
$p['output']['subject']['value'] = $p['output']['subject']['value'] . $this->unsubscribe_img;
$p['output']['subject']['html'] = 1;
}
return $p;
}
}