/usr/share/squirrelmail/src/folders_subscribe.php is in squirrelmail 2:1.4.23~svn20120406-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/**
* folders_subscribe.php
*
* Subscribe and unsubcribe from folders.
* Called from folders.php
*
* @copyright 1999-2012 The SquirrelMail Project Team
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
* @version $Id: folders_subscribe.php 14248 2012-01-02 00:18:17Z pdontthink $
* @package squirrelmail
*/
/** This is the folders_subscribe page */
define('PAGE_NAME', 'folders_subscribe');
/**
* Path for SquirrelMail required files.
* @ignore
*/
define('SM_PATH','../');
/* SquirrelMail required files. */
require_once(SM_PATH . 'include/validate.php');
require_once(SM_PATH . 'functions/global.php');
require_once(SM_PATH . 'functions/imap.php');
require_once(SM_PATH . 'functions/display_messages.php');
/* globals */
sqgetGlobalVar('key', $key, SQ_COOKIE);
sqgetGlobalVar('username', $username, SQ_SESSION);
sqgetGlobalVar('onetimepad',$onetimepad, SQ_SESSION);
sqgetGlobalVar('method', $method, SQ_GET);
sqgetGlobalVar('mailbox', $mailbox, SQ_POST);
if (!sqgetGlobalVar('smtoken',$submitted_token, SQ_POST)) {
$submitted_token = '';
}
/* end globals */
// first, validate security token
sm_validate_security_token($submitted_token, 3600, TRUE);
$location = get_location();
if (!isset($mailbox) || !isset($mailbox[0]) || $mailbox[0] == '') {
header("Location: $location/folders.php");
exit(0);
}
$imapConnection = sqimap_login($username, $key, $imapServerAddress, $imapPort, 0);
if ($method == 'sub') {
if($no_list_for_subscribe && $imap_server_type == 'cyrus') {
/* Cyrus, atleast, does not typically allow subscription to
* nonexistent folders (this is an optional part of IMAP),
* lets catch it here and report back cleanly. */
if(!sqimap_mailbox_exists($imapConnection, $mailbox[0])) {
header("Location: $location/folders.php?success=subscribe-doesnotexist");
sqimap_logout($imapConnection);
exit(0);
}
}
for ($i=0; $i < count($mailbox); $i++) {
$mailbox[$i] = trim($mailbox[$i]);
sqimap_subscribe ($imapConnection, $mailbox[$i]);
}
$success = 'subscribe';
} else {
for ($i=0; $i < count($mailbox); $i++) {
$mailbox[$i] = trim($mailbox[$i]);
sqimap_unsubscribe ($imapConnection, $mailbox[$i]);
}
$success = 'unsubscribe';
}
sqimap_logout($imapConnection);
header("Location: $location/folders.php?success=$success");
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