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diff --git a/plugins/show_additional_headers/show_additional_headers.php b/plugins/show_additional_headers/show_additional_headers.php
index 7e7c50354..1cbe690e9 100644
--- a/plugins/show_additional_headers/show_additional_headers.php
+++ b/plugins/show_additional_headers/show_additional_headers.php
@@ -1,52 +1,52 @@
<?php
/**
* Show additional message headers
*
* Proof-of-concept plugin which will fetch additional headers
* and display them in the message view.
*
* Enable the plugin in config/main.inc.php and add your desired headers:
* $rcmail_config['show_additional_headers'] = array('User-Agent');
*
* @version 1.0
* @author Thomas Bruederli
* @website http://roundcube.net
*/
class show_additional_headers extends rcube_plugin
{
public $task = 'mail';
function init()
{
$rcmail = rcmail::get_instance();
if ($rcmail->action == 'show' || $rcmail->action == 'preview') {
$this->add_hook('imap_init', array($this, 'imap_init'));
$this->add_hook('message_headers_output', array($this, 'message_headers'));
} else if ($rcmail->action == '') {
// with enabled_caching we're fetching additional headers before show/preview
$this->add_hook('imap_init', array($this, 'imap_init'));
}
}
function imap_init($p)
{
$rcmail = rcmail::get_instance();
- if ($add_headers = $rcmail->config->get('show_additional_headers', array()))
+ if ($add_headers = (array)$rcmail->config->get('show_additional_headers', array()))
$p['fetch_headers'] = trim($p['fetch_headers'].' ' . strtoupper(join(' ', $add_headers)));
return $p;
}
function message_headers($p)
{
$rcmail = rcmail::get_instance();
- foreach ($rcmail->config->get('show_additional_headers', array()) as $header) {
+ foreach ((array)$rcmail->config->get('show_additional_headers', array()) as $header) {
$key = strtolower($header);
if ($value = $p['headers']->others[$key])
$p['output'][$key] = array('title' => $header, 'value' => $value);
}
return $p;
}
}

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