rcube_user.php
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rcube_user.php
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	<?php

	/*
	+-----------------------------------------------------------------------+
	\| This file is part of the Roundcube Webmail client \|
	\| Copyright (C) 2005-2012, The Roundcube Dev Team \|
	\| \|
	\| Licensed under the GNU General Public License version 3 or \|
	\| any later version with exceptions for skins & plugins. \|
	\| See the README file for a full license statement. \|
	\| \|
	\| PURPOSE: \|
	\| This class represents a system user linked and provides access \|
	\| to the related database records. \|
	+-----------------------------------------------------------------------+
	\| Author: Thomas Bruederli <roundcube@gmail.com> \|
	\| Author: Aleksander Machniak <alec@alec.pl> \|
	+-----------------------------------------------------------------------+
	*/

	/**
	* Class representing a system user
	*
	* @package Framework
	* @subpackage Core
	*/
	class rcube_user
	{
	public $ID;
	public $data;
	public $language;

	/**
	* Holds database connection.
	*
	* @var rcube_db
	*/
	private $db;

	/**
	* Framework object.
	*
	* @var rcube
	*/
	private $rc;

	/**
	* Internal identities cache
	*
	* @var array
	*/
	private $identities = array();

	const SEARCH_ADDRESSBOOK = 1;
	const SEARCH_MAIL = 2;

	/**
	* Object constructor
	*
	* @param int $id User id
	* @param array $sql_arr SQL result set
	*/
	function __construct($id = null, $sql_arr = null)
	{
	$this->rc = rcube::get_instance();
	$this->db = $this->rc->get_dbh();

	if ($id && !$sql_arr) {
	$sql_result = $this->db->query(
	"SELECT * FROM ".$this->db->table_name('users')." WHERE user_id = ?", $id);
	$sql_arr = $this->db->fetch_assoc($sql_result);
	}

	if (!empty($sql_arr)) {
	$this->ID = $sql_arr['user_id'];
	$this->data = $sql_arr;
	$this->language = $sql_arr['language'];
	}
	}


	/**
	* Build a user name string (as e-mail address)
	*
	* @param string $part Username part (empty or 'local' or 'domain', 'mail')
	* @return string Full user name or its part
	*/
	function get_username($part = null)
	{
	if ($this->data['username']) {
	// return real name
	if (!$part) {
	return $this->data['username'];
	}

	list($local, $domain) = explode('@', $this->data['username']);

	// at least we should always have the local part
	if ($part == 'local') {
	return $local;
	}
	// if no domain was provided...
	if (empty($domain)) {
	$domain = $this->rc->config->mail_domain($this->data['mail_host']);
	}

	if ($part == 'domain') {
	return $domain;
	}

	if (!empty($domain))
	return $local . '@' . $domain;
	else
	return $local;
	}

	return false;
	}


	/**
	* Get the preferences saved for this user
	*
	* @return array Hash array with prefs
	*/
	function get_prefs()
	{
	if (!empty($this->language))
	$prefs = array('language' => $this->language);

	if ($this->ID) {
	// Preferences from session (write-master is unavailable)
	if (!empty($_SESSION['preferences'])) {
	// Check last write attempt time, try to write again (every 5 minutes)
	if ($_SESSION['preferences_time'] < time() - 5 * 60) {
	$saved_prefs = unserialize($_SESSION['preferences']);
	$this->rc->session->remove('preferences');
	$this->rc->session->remove('preferences_time');
	$this->save_prefs($saved_prefs);
	}
	else {
	$this->data['preferences'] = $_SESSION['preferences'];
	}
	}

	if ($this->data['preferences']) {
	$prefs += (array)unserialize($this->data['preferences']);
	}
	}

	return $prefs;
	}


	/**
	* Write the given user prefs to the user's record
	*
	* @param array $a_user_prefs User prefs to save
	* @return boolean True on success, False on failure
	*/
	function save_prefs($a_user_prefs)
	{
	if (!$this->ID)
	return false;

	$config = $this->rc->config;
	$old_prefs = (array)$this->get_prefs();

	// merge (partial) prefs array with existing settings
	$save_prefs = $a_user_prefs + $old_prefs;
	unset($save_prefs['language']);

	// don't save prefs with default values if they haven't been changed yet
	foreach ($a_user_prefs as $key => $value) {
	if ($value === null \|\| (!isset($old_prefs[$key]) && ($value == $config->get($key))))
	unset($save_prefs[$key]);
	}

	$save_prefs = serialize($save_prefs);

	$this->db->query(
	"UPDATE ".$this->db->table_name('users').
	" SET preferences = ?".
	", language = ?".
	" WHERE user_id = ?",
	$save_prefs,
	$_SESSION['language'],
	$this->ID);

	$this->language = $_SESSION['language'];

	// Update success
	if ($this->db->affected_rows() !== false) {
	$config->set_user_prefs($a_user_prefs);
	$this->data['preferences'] = $save_prefs;

	if (isset($_SESSION['preferences'])) {
	$this->rc->session->remove('preferences');
	$this->rc->session->remove('preferences_time');
	}
	return true;
	}
	// Update error, but we are using replication (we have read-only DB connection)
	// and we are storing session not in the SQL database
	// we can store preferences in session and try to write later (see get_prefs())
	else if ($this->db->is_replicated() && $config->get('session_storage', 'db') != 'db') {
	$_SESSION['preferences'] = $save_prefs;
	$_SESSION['preferences_time'] = time();
	$config->set_user_prefs($a_user_prefs);
	$this->data['preferences'] = $save_prefs;
	}

	return false;
	}


	/**
	* Get default identity of this user
	*
	* @param int $id Identity ID. If empty, the default identity is returned
	* @return array Hash array with all cols of the identity record
	*/
	function get_identity($id = null)
	{
	$id = (int)$id;
	// cache identities for better performance
	if (!array_key_exists($id, $this->identities)) {
	$result = $this->list_identities($id ? 'AND identity_id = ' . $id : '');
	$this->identities[$id] = $result[0];
	}

	return $this->identities[$id];
	}


	/**
	* Return a list of all identities linked with this user
	*
	* @param string $sql_add Optional WHERE clauses
	* @param bool $formatted Format identity email and name
	*
	* @return array List of identities
	*/
	function list_identities($sql_add = '', $formatted = false)
	{
	$result = array();

	$sql_result = $this->db->query(
	"SELECT * FROM ".$this->db->table_name('identities').
	" WHERE del <> 1 AND user_id = ?".
	($sql_add ? " ".$sql_add : "").
	" ORDER BY ".$this->db->quoteIdentifier('standard')." DESC, name ASC, identity_id ASC",
	$this->ID);

	while ($sql_arr = $this->db->fetch_assoc($sql_result)) {
	if ($formatted) {
	$ascii_email = format_email($sql_arr['email']);
	$utf8_email = format_email(rcube_utils::idn_to_utf8($ascii_email));

	$sql_arr['email_ascii'] = $ascii_email;
	$sql_arr['email'] = $utf8_email;
	$sql_arr['ident'] = format_email_recipient($ascii_email, $sql_arr['name']);
	}

	$result[] = $sql_arr;
	}

	return $result;
	}


	/**
	* Update a specific identity record
	*
	* @param int $iid Identity ID
	* @param array $data Hash array with col->value pairs to save
	* @return boolean True if saved successfully, false if nothing changed
	*/
	function update_identity($iid, $data)
	{
	if (!$this->ID)
	return false;

	$query_cols = $query_params = array();

	foreach ((array)$data as $col => $value) {
	$query_cols[] = $this->db->quoteIdentifier($col) . ' = ?';
	$query_params[] = $value;
	}
	$query_params[] = $iid;
	$query_params[] = $this->ID;

	$sql = "UPDATE ".$this->db->table_name('identities').
	" SET changed = ".$this->db->now().", ".join(', ', $query_cols).
	" WHERE identity_id = ?".
	" AND user_id = ?".
	" AND del <> 1";

	call_user_func_array(array($this->db, 'query'),
	array_merge(array($sql), $query_params));

	$this->identities = array();

	return $this->db->affected_rows();
	}


	/**
	* Create a new identity record linked with this user
	*
	* @param array $data Hash array with col->value pairs to save
	* @return int The inserted identity ID or false on error
	*/
	function insert_identity($data)
	{
	if (!$this->ID)
	return false;

	unset($data['user_id']);

	$insert_cols = $insert_values = array();
	foreach ((array)$data as $col => $value) {
	$insert_cols[] = $this->db->quoteIdentifier($col);
	$insert_values[] = $value;
	}
	$insert_cols[] = 'user_id';
	$insert_values[] = $this->ID;

	$sql = "INSERT INTO ".$this->db->table_name('identities').
	" (changed, ".join(', ', $insert_cols).")".
	" VALUES (".$this->db->now().", ".join(', ', array_pad(array(), sizeof($insert_values), '?')).")";

	call_user_func_array(array($this->db, 'query'),
	array_merge(array($sql), $insert_values));

	$this->identities = array();

	return $this->db->insert_id('identities');
	}


	/**
	* Mark the given identity as deleted
	*
	* @param int $iid Identity ID
	* @return boolean True if deleted successfully, false if nothing changed
	*/
	function delete_identity($iid)
	{
	if (!$this->ID)
	return false;

	$sql_result = $this->db->query(
	"SELECT count(*) AS ident_count FROM ".$this->db->table_name('identities').
	" WHERE user_id = ? AND del <> 1",
	$this->ID);

	$sql_arr = $this->db->fetch_assoc($sql_result);

	// we'll not delete last identity
	if ($sql_arr['ident_count'] <= 1)
	return -1;

	$this->db->query(
	"UPDATE ".$this->db->table_name('identities').
	" SET del = 1, changed = ".$this->db->now().
	" WHERE user_id = ?".
	" AND identity_id = ?",
	$this->ID,
	$iid);

	$this->identities = array();

	return $this->db->affected_rows();
	}


	/**
	* Make this identity the default one for this user
	*
	* @param int $iid The identity ID
	*/
	function set_default($iid)
	{
	if ($this->ID && $iid) {
	$this->db->query(
	"UPDATE ".$this->db->table_name('identities').
	" SET ".$this->db->quoteIdentifier('standard')." = '0'".
	" WHERE user_id = ?".
	" AND identity_id <> ?".
	" AND del <> 1",
	$this->ID,
	$iid);

	unset($this->identities[0]);
	}
	}


	/**
	* Update user's last_login timestamp
	*/
	function touch()
	{
	if ($this->ID) {
	$this->db->query(
	"UPDATE ".$this->db->table_name('users').
	" SET last_login = ".$this->db->now().
	" WHERE user_id = ?",
	$this->ID);
	}
	}


	/**
	* Clear the saved object state
	*/
	function reset()
	{
	$this->ID = null;
	$this->data = null;
	}


	/**
	* Find a user record matching the given name and host
	*
	* @param string $user IMAP user name
	* @param string $host IMAP host name
	* @return rcube_user New user instance
	*/
	static function query($user, $host)
	{
	$dbh = rcube::get_instance()->get_dbh();
	$config = rcube::get_instance()->config;

	// query for matching user name
	$sql_result = $dbh->query("SELECT * FROM " . $dbh->table_name('users')
	." WHERE mail_host = ? AND username = ?", $host, $user);

	$sql_arr = $dbh->fetch_assoc($sql_result);

	// username not found, try aliases from identities
	if (empty($sql_arr) && $config->get('user_aliases') && strpos($user, '@')) {
	$sql_result = $dbh->limitquery("SELECT u.*"
	." FROM " . $dbh->table_name('users') . " u"
	." JOIN " . $dbh->table_name('identities') . " i ON (i.user_id = u.user_id)"
	." WHERE email = ? AND del <> 1", 0, 1, $user);

	$sql_arr = $dbh->fetch_assoc($sql_result);
	}

	// user already registered -> overwrite username
	if ($sql_arr)
	return new rcube_user($sql_arr['user_id'], $sql_arr);
	else
	return false;
	}


	/**
	* Create a new user record and return a rcube_user instance
	*
	* @param string $user IMAP user name
	* @param string $host IMAP host
	* @return rcube_user New user instance
	*/
	static function create($user, $host)
	{
	$user_name = '';
	$user_email = '';
	$rcube = rcube::get_instance();
	$dbh = $rcube->get_dbh();

	// try to resolve user in virtuser table and file
	if ($email_list = self::user2email($user, false, true)) {
	$user_email = is_array($email_list[0]) ? $email_list[0]['email'] : $email_list[0];
	}

	$data = $rcube->plugins->exec_hook('user_create', array(
	'host' => $host,
	'user' => $user,
	'user_name' => $user_name,
	'user_email' => $user_email,
	'email_list' => $email_list,
	'language' => $_SESSION['language'],
	));

	// plugin aborted this operation
	if ($data['abort']) {
	return false;
	}

	$dbh->query(
	"INSERT INTO ".$dbh->table_name('users').
	" (created, last_login, username, mail_host, language)".
	" VALUES (".$dbh->now().", ".$dbh->now().", ?, ?, ?)",
	$data['user'],
	$data['host'],
	$data['language']);

	if ($user_id = $dbh->insert_id('users')) {
	// create rcube_user instance to make plugin hooks work
	$user_instance = new rcube_user($user_id, array(
	'user_id' => $user_id,
	'username' => $data['user'],
	'mail_host' => $data['host'],
	'language' => $data['language'],
	));
	$rcube->user = $user_instance;
	$mail_domain = $rcube->config->mail_domain($data['host']);
	$user_name = $data['user_name'];
	$user_email = $data['user_email'];
	$email_list = $data['email_list'];

	if (empty($email_list)) {
	if (empty($user_email)) {
	$user_email = strpos($data['user'], '@') ? $user : sprintf('%s@%s', $data['user'], $mail_domain);
	}
	$email_list[] = $user_email;
	}
	// identities_level check
	else if (count($email_list) > 1 && $rcube->config->get('identities_level', 0) > 1) {
	$email_list = array($email_list[0]);
	}

	if (empty($user_name)) {
	$user_name = $data['user'];
	}

	// create new identities records
	$standard = 1;
	foreach ($email_list as $row) {
	$record = array();

	if (is_array($row)) {
	if (empty($row['email'])) {
	continue;
	}
	$record = $row;
	}
	else {
	$record['email'] = $row;
	}

	if (empty($record['name'])) {
	$record['name'] = $user_name != $record['email'] ? $user_name : '';
	}

	$record['user_id'] = $user_id;
	$record['standard'] = $standard;

	$plugin = $rcube->plugins->exec_hook('identity_create',
	array('login' => true, 'record' => $record));

	if (!$plugin['abort'] && $plugin['record']['email']) {
	$rcube->user->insert_identity($plugin['record']);
	}
	$standard = 0;
	}
	}
	else {
	rcube::raise_error(array(
	'code' => 500,
	'type' => 'php',
	'line' => __LINE__,
	'file' => __FILE__,
	'message' => "Failed to create new user"), true, false);
	}

	return $user_id ? $user_instance : false;
	}


	/**
	* Resolve username using a virtuser plugins
	*
	* @param string $email E-mail address to resolve
	* @return string Resolved IMAP username
	*/
	static function email2user($email)
	{
	$rcube = rcube::get_instance();
	$plugin = $rcube->plugins->exec_hook('email2user',
	array('email' => $email, 'user' => NULL));

	return $plugin['user'];
	}


	/**
	* Resolve e-mail address from virtuser plugins
	*
	* @param string $user User name
	* @param boolean $first If true returns first found entry
	* @param boolean $extended If true returns email as array (email and name for identity)
	* @return mixed Resolved e-mail address string or array of strings
	*/
	static function user2email($user, $first=true, $extended=false)
	{
	$rcube = rcube::get_instance();
	$plugin = $rcube->plugins->exec_hook('user2email',
	array('email' => NULL, 'user' => $user,
	'first' => $first, 'extended' => $extended));

	return empty($plugin['email']) ? NULL : $plugin['email'];
	}


	/**
	* Return a list of saved searches linked with this user
	*
	* @param int $type Search type
	*
	* @return array List of saved searches indexed by search ID
	*/
	function list_searches($type)
	{
	$plugin = $this->rc->plugins->exec_hook('saved_search_list', array('type' => $type));

	if ($plugin['abort']) {
	return (array) $plugin['result'];
	}

	$result = array();

	$sql_result = $this->db->query(
	"SELECT search_id AS id, ".$this->db->quoteIdentifier('name')
	." FROM ".$this->db->table_name('searches')
	." WHERE user_id = ?"
	." AND ".$this->db->quoteIdentifier('type')." = ?"
	." ORDER BY ".$this->db->quoteIdentifier('name'),
	(int) $this->ID, (int) $type);

	while ($sql_arr = $this->db->fetch_assoc($sql_result)) {
	$sql_arr['data'] = unserialize($sql_arr['data']);
	$result[$sql_arr['id']] = $sql_arr;
	}

	return $result;
	}


	/**
	* Return saved search data.
	*
	* @param int $id Row identifier
	*
	* @return array Data
	*/
	function get_search($id)
	{
	$plugin = $this->rc->plugins->exec_hook('saved_search_get', array('id' => $id));

	if ($plugin['abort']) {
	return $plugin['result'];
	}

	$sql_result = $this->db->query(
	"SELECT ".$this->db->quoteIdentifier('name')
	.", ".$this->db->quoteIdentifier('data')
	.", ".$this->db->quoteIdentifier('type')
	." FROM ".$this->db->table_name('searches')
	." WHERE user_id = ?"
	." AND search_id = ?",
	(int) $this->ID, (int) $id);

	while ($sql_arr = $this->db->fetch_assoc($sql_result)) {
	return array(
	'id' => $id,
	'name' => $sql_arr['name'],
	'type' => $sql_arr['type'],
	'data' => unserialize($sql_arr['data']),
	);
	}

	return null;
	}


	/**
	* Deletes given saved search record
	*
	* @param int $sid Search ID
	*
	* @return boolean True if deleted successfully, false if nothing changed
	*/
	function delete_search($sid)
	{
	if (!$this->ID)
	return false;

	$this->db->query(
	"DELETE FROM ".$this->db->table_name('searches')
	." WHERE user_id = ?"
	." AND search_id = ?",
	(int) $this->ID, $sid);

	return $this->db->affected_rows();
	}


	/**
	* Create a new saved search record linked with this user
	*
	* @param array $data Hash array with col->value pairs to save
	*
	* @return int The inserted search ID or false on error
	*/
	function insert_search($data)
	{
	if (!$this->ID)
	return false;

	$insert_cols[] = 'user_id';
	$insert_values[] = (int) $this->ID;
	$insert_cols[] = $this->db->quoteIdentifier('type');
	$insert_values[] = (int) $data['type'];
	$insert_cols[] = $this->db->quoteIdentifier('name');
	$insert_values[] = $data['name'];
	$insert_cols[] = $this->db->quoteIdentifier('data');
	$insert_values[] = serialize($data['data']);

	$sql = "INSERT INTO ".$this->db->table_name('searches')
	." (".join(', ', $insert_cols).")"
	." VALUES (".join(', ', array_pad(array(), sizeof($insert_values), '?')).")";

	call_user_func_array(array($this->db, 'query'),
	array_merge(array($sql), $insert_values));

	return $this->db->insert_id('searches');
	}

	}

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