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<?php
namespace RedMatrix\RedDAV;
use Sabre\DAV;
/**
* @brief Authentication backend class for RedDAV.
*
* This class also contains some data which is not necessary for authentication
* like timezone settings.
*
* @extends Sabre\DAV\Auth\Backend\AbstractBasic
*
* @link http://github.com/friendica/red
* @license http://opensource.org/licenses/mit-license.php The MIT License (MIT)
*/
class RedBasicAuth extends DAV\Auth\Backend\AbstractBasic {
/**
* @brief This variable holds the currently logged-in channel_address.
*
* It is used for building path in filestorage/.
*
* @var string|null
*/
protected $channel_name = null;
/**
* channel_id of the current channel of the logged-in account.
*
* @var int
*/
public $channel_id = 0;
/**
* channel_hash of the current channel of the logged-in account.
*
* @var string
*/
public $channel_hash = '';
/**
* Set in mod/cloud.php to observer_hash.
*
* @var string
*/
public $observer = '';
/**
*
* @see RedBrowser::set_writeable()
* @var \Sabre\DAV\Browser\Plugin
*/
public $browser;
/**
* channel_id of the current visited path. Set in RedDirectory::getDir().
*
* @var int
*/
public $owner_id = 0;
/**
* channel_name of the current visited path. Set in RedDirectory::getDir().
*
* Used for creating the path in cloud/
*
* @var string
*/
public $owner_nick = '';
/**
* Timezone from the visiting channel's channel_timezone.
*
* Used in @ref RedBrowser
*
* @var string
*/
protected $timezone = '';
/**
* @brief Validates a username and password.
*
* Guest access is granted with the password "+++".
*
* @see \Sabre\DAV\Auth\Backend\AbstractBasic::validateUserPass
* @param string $username
* @param string $password
* @return bool
*/
protected function validateUserPass($username, $password) {
if (trim($password) === '+++') {
logger('guest: ' . $username);
return true;
}
require_once('include/auth.php');
$record = account_verify_password($username, $password);
if ($record && $record['account_default_channel']) {
$r = q("SELECT * FROM channel WHERE channel_account_id = %d AND channel_id = %d LIMIT 1",
intval($record['account_id']),
intval($record['account_default_channel'])
);
if ($r) {
return $this->setAuthenticated($r[0]);
}
}
$r = q("SELECT * FROM channel WHERE channel_address = '%s' LIMIT 1",
dbesc($username)
);
if ($r) {
$x = q("SELECT account_flags, account_salt, account_password FROM account WHERE account_id = %d LIMIT 1",
intval($r[0]['channel_account_id'])
);
if ($x) {
// @fixme this foreach should not be needed?
foreach ($x as $record) {
if (($record['account_flags'] == ACCOUNT_OK) || ($record['account_flags'] == ACCOUNT_UNVERIFIED)
&& (hash('whirlpool', $record['account_salt'] . $password) === $record['account_password'])) {
logger('password verified for ' . $username);
return $this->setAuthenticated($r[0]);
}
}
}
}
logger('password failed for ' . $username);
// @TODO add security logger
return false;
}
/**
* @brief Sets variables and session parameters after successfull authentication.
*
* @param array $r
* Array with the values for the authenticated channel.
* @return bool
*/
protected function setAuthenticated($r) {
$this->channel_name = $r['channel_address'];
$this->channel_id = $r['channel_id'];
$this->channel_hash = $this->observer = $r['channel_hash'];
$_SESSION['uid'] = $r['channel_id'];
$_SESSION['account_id'] = $r['channel_account_id'];
$_SESSION['authenticated'] = true;
return true;
}
/**
* Sets the channel_name from the currently logged-in channel.
*
* @param string $name
* The channel's name
*/
public function setCurrentUser($name) {
$this->channel_name = $name;
}
/**
* Returns information about the currently logged-in channel.
*
* If nobody is currently logged in, this method should return null.
*
* @see \Sabre\DAV\Auth\Backend\AbstractBasic::getCurrentUser
* @return string|null
*/
public function getCurrentUser() {
return $this->channel_name;
}
/**
* @brief Sets the timezone from the channel in RedBasicAuth.
*
* Set in mod/cloud.php if the channel has a timezone set.
*
* @param string $timezone
* The channel's timezone.
* @return void
*/
public function setTimezone($timezone) {
$this->timezone = $timezone;
}
/**
* @brief Returns the timezone.
*
* @return string
* Return the channel's timezone.
*/
public function getTimezone() {
return $this->timezone;
}
/**
* @brief Set browser plugin for SabreDAV.
*
* @see RedBrowser::set_writeable()
* @param \Sabre\DAV\Browser\Plugin $browser
*/
public function setBrowserPlugin($browser) {
$this->browser = $browser;
}
/**
* @brief Prints out all RedBasicAuth variables to logger().
*
* @return void
*/
public function log() {
logger('channel_name ' . $this->channel_name, LOGGER_DATA);
logger('channel_id ' . $this->channel_id, LOGGER_DATA);
logger('channel_hash ' . $this->channel_hash, LOGGER_DATA);
logger('observer ' . $this->observer, LOGGER_DATA);
logger('owner_id ' . $this->owner_id, LOGGER_DATA);
logger('owner_nick ' . $this->owner_nick, LOGGER_DATA);
}
}
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