634 lines
20 KiB
PHP
634 lines
20 KiB
PHP
<?php
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/**
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* StatusNet, the distributed open-source microblogging tool
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*
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* Superclass for plugins that do instant messaging
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*
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* PHP version 5
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*
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* LICENCE: This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @category Plugin
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* @package StatusNet
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* @author Craig Andrews <candrews@integralblue.com>
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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if (!defined('STATUSNET') && !defined('LACONICA')) {
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exit(1);
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}
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/**
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* Superclass for plugins that do authentication
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*
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* Implementations will likely want to override onStartIoManagerClasses() so that their
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* IO manager is used
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*
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* @category Plugin
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* @package StatusNet
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* @author Craig Andrews <candrews@integralblue.com>
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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abstract class ImPlugin extends Plugin
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{
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//name of this IM transport
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public $transport = null;
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//list of screennames that should get all public notices
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public $public = array();
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protected $requires_cli = true;
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/**
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* normalize a screenname for comparison
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*
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* @param string $screenname screenname to normalize
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*
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* @return string an equivalent screenname in normalized form
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*/
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abstract function normalize($screenname);
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/**
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* validate (ensure the validity of) a screenname
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*
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* @param string $screenname screenname to validate
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*
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* @return boolean
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*/
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abstract function validate($screenname);
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/**
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* get the internationalized/translated display name of this IM service
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*
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* @return string
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*/
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abstract function getDisplayName();
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/**
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* send a single notice to a given screenname
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* The implementation should put raw data, ready to send, into the outgoing
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* queue using enqueueOutgoingRaw()
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*
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* @param string $screenname screenname to send to
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* @param Notice $notice notice to send
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*
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* @return boolean success value
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*/
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function sendNotice($screenname, Notice $notice)
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{
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return $this->sendMessage($screenname, $this->formatNotice($notice));
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}
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/**
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* send a message (text) to a given screenname
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* The implementation should put raw data, ready to send, into the outgoing
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* queue using enqueueOutgoingRaw()
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*
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* @param string $screenname screenname to send to
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* @param Notice $body text to send
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*
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* @return boolean success value
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*/
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abstract function sendMessage($screenname, $body);
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/**
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* receive a raw message
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* Raw IM data is taken from the incoming queue, and passed to this function.
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* It should parse the raw message and call handleIncoming()
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*
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* Returning false may CAUSE REPROCESSING OF THE QUEUE ITEM, and should
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* be used for temporary failures only. For permanent failures such as
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* unrecognized addresses, return true to indicate your processing has
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* completed.
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*
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* @param object $data raw IM data
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*
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* @return boolean true if processing completed, false for temporary failures
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*/
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abstract function receiveRawMessage($data);
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/**
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* get the screenname of the daemon that sends and receives message for this service
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*
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* @return string screenname of this plugin
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*/
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abstract function daemonScreenname();
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//========================UTILITY FUNCTIONS USEFUL TO IMPLEMENTATIONS - MISC ========================\
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/**
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* Put raw message data (ready to send) into the outgoing queue
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*
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* @param object $data
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*/
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function enqueueOutgoingRaw($data)
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{
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$qm = QueueManager::get();
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$qm->enqueue($data, $this->transport . '-out');
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}
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/**
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* Put raw message data (received, ready to be processed) into the incoming queue
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*
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* @param object $data
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*/
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function enqueueIncomingRaw($data)
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{
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$qm = QueueManager::get();
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$qm->enqueue($data, $this->transport . '-in');
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}
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/**
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* given a screenname, get the corresponding user
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*
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* @param string $screenname
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*
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* @return User user
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*/
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function getUser($screenname)
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{
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$user_im_prefs = $this->getUserImPrefsFromScreenname($screenname);
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if($user_im_prefs){
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$user = User::getKV('id', $user_im_prefs->user_id);
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$user_im_prefs->free();
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return $user;
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}else{
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return false;
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}
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}
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/**
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* given a screenname, get the User_im_prefs object for this transport
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*
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* @param string $screenname
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*
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* @return User_im_prefs user_im_prefs
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*/
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function getUserImPrefsFromScreenname($screenname)
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{
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$user_im_prefs = User_im_prefs::pkeyGet(
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array('transport' => $this->transport,
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'screenname' => $this->normalize($screenname)));
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if ($user_im_prefs) {
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return $user_im_prefs;
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} else {
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return false;
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}
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}
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/**
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* given a User, get their screenname
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*
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* @param User $user
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*
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* @return string screenname of that user
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*/
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function getScreenname($user)
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{
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$user_im_prefs = $this->getUserImPrefsFromUser($user);
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if ($user_im_prefs) {
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return $user_im_prefs->screenname;
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} else {
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return false;
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}
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}
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/**
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* given a User, get their User_im_prefs
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*
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* @param User $user
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*
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* @return User_im_prefs user_im_prefs of that user
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*/
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function getUserImPrefsFromUser($user)
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{
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$user_im_prefs = User_im_prefs::pkeyGet(
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array('transport' => $this->transport,
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'user_id' => $user->id));
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if ($user_im_prefs){
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return $user_im_prefs;
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} else {
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return false;
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}
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}
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//========================UTILITY FUNCTIONS USEFUL TO IMPLEMENTATIONS - SENDING ========================\
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/**
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* Send a message to a given screenname from the site
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*
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* @param string $screenname screenname to send the message to
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* @param string $msg message contents to send
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*
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* @param boolean success
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*/
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protected function sendFromSite($screenname, $msg)
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{
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$text = '['.common_config('site', 'name') . '] ' . $msg;
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$this->sendMessage($screenname, $text);
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}
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/**
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* Send a confirmation code to a user
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*
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* @param string $screenname screenname sending to
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* @param string $code the confirmation code
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* @param Profile $target For whom the code is valid for
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*
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* @return boolean success value
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*/
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function sendConfirmationCode($screenname, $code, Profile $target)
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{
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// TRANS: Body text for confirmation code e-mail.
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// TRANS: %1$s is a user nickname, %2$s is the StatusNet sitename,
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// TRANS: %3$s is the display name of an IM plugin.
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$body = sprintf(_('User "%1$s" on %2$s has said that your %3$s screenname belongs to them. ' .
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'If that is true, you can confirm by clicking on this URL: ' .
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'%4$s' .
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' . (If you cannot click it, copy-and-paste it into the ' .
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'address bar of your browser). If that user is not you, ' .
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'or if you did not request this confirmation, just ignore this message.'),
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$target->getNickname(), common_config('site', 'name'), $this->getDisplayName(), common_local_url('confirmaddress', null, array('code' => $code)));
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return $this->sendMessage($screenname, $body);
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}
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/**
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* send a notice to all public listeners
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*
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* For notices that are generated on the local system (by users), we can optionally
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* forward them to remote listeners by XMPP.
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*
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* @param Notice $notice notice to broadcast
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*
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* @return boolean success flag
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*/
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function publicNotice($notice)
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{
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// Now, users who want everything
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// FIXME PRIV don't send out private messages here
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// XXX: should we send out non-local messages if public,localonly
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// = false? I think not
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foreach ($this->public as $screenname) {
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common_log(LOG_INFO,
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'Sending notice ' . $notice->id .
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' to public listener ' . $screenname,
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__FILE__);
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$this->sendNotice($screenname, $notice);
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}
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return true;
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}
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/**
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* broadcast a notice to all subscribers and reply recipients
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*
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* This function will send a notice to all subscribers on the local server
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* who have IM addresses, and have IM notification enabled, and
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* have this subscription enabled for IM. It also sends the notice to
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* all recipients of @-replies who have IM addresses and IM notification
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* enabled. This is really the heart of IM distribution in StatusNet.
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*
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* @param Notice $notice The notice to broadcast
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*
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* @return boolean success flag
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*/
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function broadcastNotice($notice)
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{
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$ni = $notice->whoGets();
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foreach ($ni as $user_id => $reason) {
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$user = User::getKV($user_id);
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if (empty($user)) {
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// either not a local user, or just not found
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continue;
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}
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$user_im_prefs = $this->getUserImPrefsFromUser($user);
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if(!$user_im_prefs || !$user_im_prefs->notify){
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continue;
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}
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switch ($reason) {
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case NOTICE_INBOX_SOURCE_REPLY:
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if (!$user_im_prefs->replies) {
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continue 2;
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}
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break;
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case NOTICE_INBOX_SOURCE_SUB:
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$sub = Subscription::pkeyGet(array('subscriber' => $user->id,
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'subscribed' => $notice->profile_id));
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if (empty($sub) || !$sub->jabber) {
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continue 2;
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}
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break;
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case NOTICE_INBOX_SOURCE_GROUP:
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break;
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default:
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// TRANS: Exception thrown when trying to deliver a notice to an unknown inbox.
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// TRANS: %d is the unknown inbox ID (number).
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throw new Exception(sprintf(_('Unknown inbox source %d.'), $reason));
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}
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common_log(LOG_INFO,
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'Sending notice ' . $notice->id . ' to ' . $user_im_prefs->screenname,
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__FILE__);
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$this->sendNotice($user_im_prefs->screenname, $notice);
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$user_im_prefs->free();
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}
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return true;
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}
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/**
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* makes a plain-text formatted version of a notice, suitable for IM distribution
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*
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* @param Notice $notice notice being sent
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*
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* @return string plain-text version of the notice, with user nickname prefixed
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*/
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protected function formatNotice(Notice $notice)
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{
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$profile = $notice->getProfile();
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$nicknames = $profile->getNickname();
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try {
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$parent = $notice->getParent();
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$orig_profile = $parent->getProfile();
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$nicknames = sprintf('%1$s => %2$s', $profile->getNickname(), $orig_profile->getNickname());
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} catch (NoParentNoticeException $e) {
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// Not a reply, no parent notice stored
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} catch (NoResultException $e) {
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// Parent notice was probably deleted
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}
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return sprintf('%1$s: %2$s [%3$u]', $nicknames, $notice->content, $notice->id);
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}
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//========================UTILITY FUNCTIONS USEFUL TO IMPLEMENTATIONS - RECEIVING ========================\
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/**
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* Attempt to handle a message as a command
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* @param User $user user the message is from
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* @param string $body message text
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* @return boolean true if the message was a command and was executed, false if it was not a command
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*/
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protected function handleCommand($user, $body)
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{
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$inter = new CommandInterpreter();
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$cmd = $inter->handle_command($user, $body);
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if ($cmd) {
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$chan = new IMChannel($this);
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$cmd->execute($chan);
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return true;
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}
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return false;
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}
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/**
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* Is some text an autoreply message?
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* @param string $txt message text
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* @return boolean true if autoreply
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*/
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protected function isAutoreply($txt)
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{
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if (preg_match('/[\[\(]?[Aa]uto[-\s]?[Rr]e(ply|sponse)[\]\)]/', $txt)) {
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return true;
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} else if (preg_match('/^System: Message wasn\'t delivered. Offline storage size was exceeded.$/', $txt)) {
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return true;
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} else {
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return false;
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}
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}
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/**
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* Is some text an OTR message?
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* @param string $txt message text
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* @return boolean true if OTR
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*/
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protected function isOtr($txt)
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{
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if (preg_match('/^\?OTR/', $txt)) {
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return true;
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} else {
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return false;
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}
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}
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/**
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* Helper for handling incoming messages
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* Your incoming message handler will probably want to call this function
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*
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* @param string $from screenname the message was sent from
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* @param string $message message contents
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*
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* @param boolean success
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*/
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protected function handleIncoming($from, $notice_text)
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{
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$user = $this->getUser($from);
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// For common_current_user to work
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global $_cur;
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$_cur = $user;
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if (!$user) {
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$this->sendFromSite($from, 'Unknown user; go to ' .
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common_local_url('imsettings') .
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' to add your address to your account');
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common_log(LOG_WARNING, 'Message from unknown user ' . $from);
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return;
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}
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if ($this->handleCommand($user, $notice_text)) {
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common_log(LOG_INFO, "Command message by $from handled.");
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return;
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} else if ($this->isAutoreply($notice_text)) {
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common_log(LOG_INFO, 'Ignoring auto reply from ' . $from);
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return;
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} else if ($this->isOtr($notice_text)) {
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common_log(LOG_INFO, 'Ignoring OTR from ' . $from);
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return;
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} else {
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common_log(LOG_INFO, 'Posting a notice from ' . $user->nickname);
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$this->addNotice($from, $user, $notice_text);
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}
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$user->free();
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unset($user);
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unset($_cur);
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unset($message);
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}
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/**
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* Helper for handling incoming messages
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* Your incoming message handler will probably want to call this function
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*
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* @param string $from screenname the message was sent from
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* @param string $message message contents
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*
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* @param boolean success
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*/
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protected function addNotice($screenname, $user, $body)
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{
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$body = trim(strip_tags($body));
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$content_shortened = common_shorten_links($body);
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if (Notice::contentTooLong($content_shortened)) {
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$this->sendFromSite($screenname,
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// TRANS: Message given when a status is too long. %1$s is the maximum number of characters,
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// TRANS: %2$s is the number of characters sent (used for plural).
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sprintf(_m('Message too long - maximum is %1$d character, you sent %2$d.',
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'Message too long - maximum is %1$d characters, you sent %2$d.',
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Notice::maxContent()),
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Notice::maxContent(),
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mb_strlen($content_shortened)));
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return;
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}
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try {
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$notice = Notice::saveNew($user->id, $content_shortened, $this->transport);
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} catch (Exception $e) {
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common_log(LOG_ERR, $e->getMessage());
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$this->sendFromSite($from, $e->getMessage());
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return;
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}
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common_log(LOG_INFO,
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'Added notice ' . $notice->id . ' from user ' . $user->nickname);
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$notice->free();
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unset($notice);
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}
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//========================EVENT HANDLERS========================\
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/**
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* Register notice queue handler
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*
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* @param QueueManager $manager
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*
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* @return boolean hook return
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*/
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function onEndInitializeQueueManager($manager)
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{
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// If we don't require CLI mode, or if we do and GNUSOCIAL_CLI _is_ set, then connect the transports
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// This check is made mostly because some IM plugins can't deliver to transports unless they
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// have continuously running daemons (such as XMPP) and we can't have that over HTTP requests.
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if (!$this->requires_cli || defined('GNUSOCIAL_CLI')) {
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$manager->connect($this->transport . '-in', new ImReceiverQueueHandler($this), 'im');
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$manager->connect($this->transport, new ImQueueHandler($this));
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$manager->connect($this->transport . '-out', new ImSenderQueueHandler($this), 'im');
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}
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return true;
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}
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function onStartImDaemonIoManagers(&$classes)
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{
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//$classes[] = new ImManager($this); // handles sending/receiving/pings/reconnects
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return true;
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}
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function onStartEnqueueNotice($notice, &$transports)
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{
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|
$profile = Profile::getKV($notice->profile_id);
|
|
|
|
if (!$profile) {
|
|
common_log(LOG_WARNING, 'Refusing to broadcast notice with ' .
|
|
'unknown profile ' . common_log_objstring($notice),
|
|
__FILE__);
|
|
}else{
|
|
$transports[] = $this->transport;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
function onEndShowHeadElements(Action $action)
|
|
{
|
|
if ($action instanceof ShownoticeAction) {
|
|
|
|
$user_im_prefs = new User_im_prefs();
|
|
$user_im_prefs->user_id = $action->notice->getProfile()->getID();
|
|
$user_im_prefs->transport = $this->transport;
|
|
|
|
} elseif ($action instanceof ShowstreamAction) {
|
|
|
|
$user_im_prefs = new User_im_prefs();
|
|
$user_im_prefs->user_id = $action->getTarget()->getID();
|
|
$user_im_prefs->transport = $this->transport;
|
|
|
|
}
|
|
}
|
|
|
|
function onNormalizeImScreenname($transport, &$screenname)
|
|
{
|
|
if($transport == $this->transport)
|
|
{
|
|
$screenname = $this->normalize($screenname);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
function onValidateImScreenname($transport, $screenname, &$valid)
|
|
{
|
|
if($transport == $this->transport)
|
|
{
|
|
$valid = $this->validate($screenname);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
function onGetImTransports(&$transports)
|
|
{
|
|
$transports[$this->transport] = array(
|
|
'display' => $this->getDisplayName(),
|
|
'daemonScreenname' => $this->daemonScreenname());
|
|
}
|
|
|
|
function onSendImConfirmationCode($transport, $screenname, $code, Profile $target)
|
|
{
|
|
if($transport == $this->transport)
|
|
{
|
|
$this->sendConfirmationCode($screenname, $code, $target);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
function onUserDeleteRelated($user, &$tables)
|
|
{
|
|
$tables[] = 'User_im_prefs';
|
|
return true;
|
|
}
|
|
|
|
function onHaveImPlugin(&$haveImPlugin) {
|
|
$haveImPlugin = true; // set flag true (we're loaded, after all!)
|
|
return false; // stop looking
|
|
}
|
|
|
|
function initialize()
|
|
{
|
|
if( ! common_config('queue', 'enabled'))
|
|
{
|
|
// TRANS: Server exception thrown trying to initialise an IM plugin without meeting all prerequisites.
|
|
throw new ServerException(_('Queueing must be enabled to use IM plugins.'));
|
|
}
|
|
|
|
if(is_null($this->transport)){
|
|
// TRANS: Server exception thrown trying to initialise an IM plugin without a transport method.
|
|
throw new ServerException(_('Transport cannot be null.'));
|
|
}
|
|
}
|
|
}
|