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<?php
/**
* Implements the Accounts API for servers with unix accounts on the localhost
* machine (same machine as the web server). Should work for local unix
* accounts, nis/nis+ accounts, or any PAM oriented accounts that appear as
* local accounts on the local machine. The exception is the quota support.
* See that routine for additional comments.
*
* Copyright 2002-2016 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL-2). If you
* did not receive this file, see http://www.horde.org/licenses/lgpl.
*
* @author Eric Jon Rostetter <eric.rostetter@physics.utexas.edu>
* @author Jan Schneider <jan@horde.org>
* @package Horde
*/
class Horde_Block_Account_Localhost extends Horde_Block_Account_Base
{
/**
* User information hash.
*
* @var array
*/
protected $_information;
/**
* Constructor.
*
* @param array $params Hash containing connection parameters.
*/
public function __construct($params = array())
{
$params = array_merge(
array('quota_path' => 'quota',
'grep_path' => 'grep'),
$params);
parent::__construct($params);
}
/**
* Returns the user account from the posix information.
*
* @return array A hash with complete account details.
*
* @throws Horde_Exception if posix extension is missing.
*/
protected function _getAccount()
{
if (!isset($this->_information)) {
// This won't work if we don't have posix extensions.
if (!Horde_Util::extensionExists('posix')) {
throw new Horde_Exception(_("POSIX extension is missing"));
}
$user = Horde_String::lower($this->getUsername());
$this->_information = posix_getpwnam($user);
}
return $this->_information;
}
/**
* Returns the user's quota for servers with a unix quota command.
*
* This may require a modified "quota" command that allows the httpd
* server account to get quotas for other users... It requires that your
* web server and user server be the same server or at least have shared
* authentication and file servers (e.g. via NIS/NFS). And last, it (as
* written) requires the posix php extensions.
*
* If your quota command wraps the output onto two lines, then this module
* will only work if you have a grep which supports the -A switch, and you
* append an -A1 switch to your grep_path (e.g. '/bin/grep -A1').
*
* @return array A quota array, elements are used bytes and limit bytes.
*
* @throws Horde_Exception if posix extension is missing.
*/
public function getQuota()
{
$information = $this->_getAccount();
$homedir = $information['dir'];
// If we want mount point translations, then translate the login dir
// name to a mount point. If not, then simply parse out the device
// name from the login directory, and use that instead.
if ($this->_params['translateMountPoint'] &&
file_exists($this->_params['translationTable'])) {
$sysTab = File_Fstab::singleton($this->_params['translationTable']);
do {
$entry = $sysTab->getEntryForPath($homedir);
$homedir = dirname($homedir);
if ($homedir == '.' || empty($homedir)) {
$homedir = '/';
}
} while (is_a($entry, 'PEAR_Error'));
$mountPoint = $entry->device;
} else {
$homedir = explode('/', $homedir);
$mountPoint = '/' . $homedir[1];
}
$cmdline = sprintf('%s -u %s 2>&1 | %s %s',
$this->_params['quota_path'],
$this->getUserName(),
$this->_params['grep_path'],
$mountPoint);
exec($cmdline, $quota_data, $return_code);
if ($return_code == 0 && !empty($quota_data[0])) {
// In case of quota output wrapping on two lines, we concat the
// second line of results, if any, here.
if (!empty($quota_data[1])) {
$quota_data[0] .= $quota_data[1];
}
// Now parse out the quota info and return it.
$quota = preg_split('/\s+/', trim($quota_data[0]));
return array('used' => $quota[1] * 1024, 'limit' => $quota[2] * 1024);
}
return array();
}
/**
* Returns the user's full name.
*
* @return string The user's full name.
*
* @throws Horde_Exception if posix extension is missing.
*/
public function getFullname()
{
$information = $this->_getAccount();
$gecos_array = explode(',', $information['gecos']);
return $gecos_array[0];
}
/**
* Returns the user's home (login) directory.
*
* @return string The user's directory.
*
* @throws Horde_Exception if posix extension is missing.
*/
public function getHome()
{
$information = $this->_getAccount();
return $information['dir'];
}
/**
* Returns the user's default shell.
*
* @return string The user's shell.
*
* @throws Horde_Exception if posix extension is missing.
*/
public function getShell()
{
$information = $this->_getAccount();
return $information['shell'];
}
}
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