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dovecot_passwdfile.php
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dovecot_passwdfile.php
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<?php
/**
* Dovecot passwdfile Password Driver
*
* Driver that adds functionality to change the passwords in dovecot v2 passwd-file files.
* The code is derrived from the Plugin examples by The Roundcube Dev Team
*
* On vanilla dovecot v2 environments, use the correct values for these config settings, too:
*
* $config['password_dovecot_passwdfile_path']: The path of your dovecot passwd-file '/path/to/filename'
* $config['password_dovecotpw']: Full path and 'pw' command of doveadm binary - like '/usr/local/bin/doveadm pw'
* $config['password_dovecotpw_method']: Dovecot hashing algo (http://wiki2.dovecot.org/Authentication/PasswordSchemes)
* $config['password_dovecotpw_with_method']: True if you want the hashing algo as prefix in your passwd-file
*
* @version 1.1
*
* Copyright (C) 2017, hostNET Medien GmbH, www.hostnet.de
* Copyright (C) The Roundcube Dev Team
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*/
class rcube_dovecot_passwdfile_password
{
public function save($currpass, $newpass, $username)
{
$rcmail = rcmail::get_instance();
$mailuserfile = $rcmail->config->get('password_dovecot_passwdfile_path') ?: '/etc/mail/imap.passwd';
$password = password::hash_password($newpass);
$password = escapeshellcmd($password); // FIXME: Do we need this?
$username = escapeshellcmd($username); // FIXME: Do we need this?
$content = '';
// read the entire mailuser file
$fp = fopen($mailuserfile, 'r');
if (empty($fp)) {
rcube::raise_error([
'code' => 600, 'file' => __FILE__, 'line' => __LINE__,
'message' => "Password plugin: Unable to read password file $mailuserfile."
],
true, false
);
return PASSWORD_CONNECT_ERROR;
}
if (flock($fp, LOCK_EX)) {
// Read the file and replace the user password
while (($line = fgets($handle, 40960)) !== false) {
if (strpos($line, "$username:") === 0) {
$pos = strpos($line, ':', strlen("$username:") + 1);
$line = "$username:$newhash" . substr($line, $pos);
}
$content .= $line;
}
// Write back the entire file
if (file_put_contents($mailuserfile, $content)) {
flock($fp, LOCK_UN);
fclose($fp);
return PASSWORD_SUCCESS;
}
}
fclose($fp);
rcube::raise_error([
'code' => 600, 'file' => __FILE__, 'line' => __LINE__,
'message' => "Password plugin: Failed to save file $mailuserfile."
],
true, false
);
return PASSWORD_ERROR;
}
}

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