forked from GNUsocial/gnu-social
de55d8f83b
lib/plugin.php now has a parent onAutoload function that finds most common
files that are used in plugins (actions, dataobjects, forms, libs etc.) if
they are put in the standardised directories ('actions', 'classes', 'forms',
'lib' and perhaps some others in the future).
289 lines
8.4 KiB
PHP
289 lines
8.4 KiB
PHP
<?php
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/**
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* StatusNet - the distributed open-source microblogging tool
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* Copyright (C) 2010, StatusNet, Inc.
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*
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* A plugin to allow anonymous users to favorite notices
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*
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* If you want to keep certain users from having anonymous faving for their
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* notices initialize the plugin with the restricted array, e.g.:
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*
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* addPlugin(
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* 'AnonymousFave',
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* array('restricted' => array('spock', 'kirk', 'bones'))
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* );
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*
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*
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* PHP version 5
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*
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* 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 Zach Copley <zach@status.net>
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* @copyright 2010 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
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* @link http://status.net/
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*/
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if (!defined('STATUSNET')) {
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// This check helps protect against security problems;
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// your code file can't be executed directly from the web.
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exit(1);
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}
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define('ANONYMOUS_FAVE_PLUGIN_VERSION', '0.1');
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/**
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* Anonymous Fave plugin to allow anonymous (not logged in) users
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* to favorite notices
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*
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* @category Plugin
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* @package StatusNet
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* @author Zach Copley <zach@status.net>
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* @copyright 2010 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
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* @link http://status.net/
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*/
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class AnonymousFavePlugin extends Plugin
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{
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// Array of users who should not have anon faving. The default is
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// that anonymous faving is allowed for all users.
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public $restricted = array();
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function onArgsInitialize() {
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// We always want a session because we're tracking anon users
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common_ensure_session();
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}
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/**
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* Hook for ensuring our tables are created
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*
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* Ensures the fave_tally table is there and has the right columns
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*
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* @return boolean hook return
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*/
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function onCheckSchema()
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{
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$schema = Schema::get();
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// For storing total number of times a notice has been faved
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$schema->ensureTable('fave_tally', Fave_tally::schemaDef());
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return true;
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}
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function onEndShowHTML($action)
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{
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if (!common_logged_in()) {
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// Set a place to return to when submitting forms
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common_set_returnto($action->selfUrl());
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}
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}
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function onEndShowScripts($action)
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{
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// Setup ajax calls for favoriting. Usually this is only done when
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// a user is logged in.
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$action->inlineScript('SN.U.NoticeFavor();');
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}
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function onStartInitializeRouter($m)
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{
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$m->connect('main/anonfavor', array('action' => 'AnonFavor'));
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$m->connect('main/anondisfavor', array('action' => 'AnonDisFavor'));
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return true;
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}
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function onStartShowNoticeOptions($item)
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{
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if (!common_logged_in()) {
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$item->out->elementStart('div', 'notice-options');
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$item->showFaveForm();
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$item->out->elementEnd('div');
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}
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return true;
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}
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function onStartShowFaveForm($item)
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{
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if (!common_logged_in() && $this->hasAnonFaving($item)) {
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$profile = AnonymousFavePlugin::getAnonProfile();
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if (!empty($profile)) {
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if ($profile->hasFave($item->notice)) {
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$disfavor = new AnonDisFavorForm($item->out, $item->notice);
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$disfavor->show();
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} else {
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$favor = new AnonFavorForm($item->out, $item->notice);
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$favor->show();
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}
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}
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}
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return true;
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}
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function onEndFavorNoticeForm($form, $notice)
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{
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$this->showTally($form->out, $notice);
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}
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function onEndDisFavorNoticeForm($form, $notice)
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{
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$this->showTally($form->out, $notice);
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}
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function showTally($out, $notice)
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{
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$tally = Fave_tally::ensureTally($notice->id);
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if (!empty($tally)) {
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$out->elementStart(
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'div',
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array(
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'id' => 'notice-' . $notice->id . '-tally',
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'class' => 'notice-tally'
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)
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);
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$out->elementStart('span', array('class' => 'fave-tally-title'));
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// TRANS: Label for tally for number of times a notice was favored.
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$out->raw(sprintf(_m("Favored")));
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$out->elementEnd('span');
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$out->elementStart('span', array('class' => 'fave-tally'));
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$out->raw($tally->count);
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$out->elementEnd('span');
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$out->elementEnd('div');
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}
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}
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function onEndFavorNotice($profile, $notice)
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{
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$tally = Fave_tally::increment($notice->id);
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}
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function onEndDisfavorNotice($profile, $notice)
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{
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$tally = Fave_tally::decrement($notice->id);
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}
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static function createAnonProfile()
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{
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// Get the anon user's IP, and turn it into a nickname
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list($proxy, $ip) = common_client_ip();
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// IP + time + random number should help to avoid collisions
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$baseNickname = $ip . '-' . time() . '-' . common_good_rand(5);
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$profile = new Profile();
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$profile->nickname = $baseNickname;
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$id = $profile->insert();
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if (!$id) {
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// TRANS: Server exception.
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throw new ServerException(_m("Could not create anonymous user session."));
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}
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// Stick the Profile ID into the nickname
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$orig = clone($profile);
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$profile->nickname = 'anon-' . $id . '-' . $baseNickname;
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$result = $profile->update($orig);
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if (!$result) {
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// TRANS: Server exception.
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throw new ServerException(_m("Could not create anonymous user session."));
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}
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common_log(
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LOG_INFO,
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"AnonymousFavePlugin - created profile for anonymous user from IP: "
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. $ip
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. ', nickname = '
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. $profile->nickname
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);
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return $profile;
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}
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static function getAnonProfile()
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{
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$token = $_SESSION['anon_token'];
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$anon = base64_decode($token);
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$profile = null;
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if (!empty($anon) && substr($anon, 0, 5) == 'anon-') {
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$parts = explode('-', $anon);
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$id = $parts[1];
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// Do Profile lookup by ID instead of nickname for safety/performance
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$profile = Profile::getKV('id', $id);
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} else {
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$profile = AnonymousFavePlugin::createAnonProfile();
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// Obfuscate so it's hard to figure out the Profile ID
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$_SESSION['anon_token'] = base64_encode($profile->nickname);
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}
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return $profile;
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}
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/**
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* Determine whether a given NoticeListItem should have the
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* anonymous fave/disfave form
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*
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* @param NoticeListItem $item
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*
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* @return boolean false if the profile associated with the notice is
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* in the list of restricted profiles, otherwise
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* return true
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*/
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function hasAnonFaving($item)
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{
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$profile = Profile::getKV('id', $item->notice->profile_id);
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if (in_array($profile->nickname, $this->restricted)) {
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return false;
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}
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return true;
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}
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/**
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* Provide plugin version information.
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*
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* This data is used when showing the version page.
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*
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* @param array &$versions array of version data arrays; see EVENTS.txt
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*
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* @return boolean hook value
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*/
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function onPluginVersion(&$versions)
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{
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$url = 'http://status.net/wiki/Plugin:AnonymousFave';
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$versions[] = array('name' => 'AnonymousFave',
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'version' => ANONYMOUS_FAVE_PLUGIN_VERSION,
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'author' => 'Zach Copley',
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'homepage' => $url,
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'rawdescription' =>
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// TRANS: Plugin description.
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_m('Allow anonymous users to favorite notices.'));
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return true;
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}
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}
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