forked from GNUsocial/gnu-social
245 lines
7.5 KiB
PHP
245 lines
7.5 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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* Utility class for plugins
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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 Evan Prodromou <evan@status.net>
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* @copyright 2008 StatusNet, Inc.
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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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* Base class for plugins
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*
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* A base class for StatusNet plugins. Mostly a light wrapper around
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* the Event framework.
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*
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* Subclasses of Plugin will automatically handle an event if they define
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* a method called "onEventName". (Well, OK -- only if they call parent::__construct()
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* in their constructors.)
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*
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* They will also automatically handle the InitializePlugin and CleanupPlugin with the
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* initialize() and cleanup() methods, respectively.
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*
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* @category Plugin
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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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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* @see Event
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*/
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class Plugin
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{
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function __construct()
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{
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Event::addHandler('InitializePlugin', array($this, 'initialize'));
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Event::addHandler('CleanupPlugin', array($this, 'cleanup'));
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foreach (get_class_methods($this) as $method) {
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if (mb_substr($method, 0, 2) == 'on') {
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Event::addHandler(mb_substr($method, 2), array($this, $method));
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}
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}
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$this->setupGettext();
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}
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function initialize()
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{
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return true;
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}
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function cleanup()
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{
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return true;
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}
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/**
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* Load related modules when needed
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*
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* Most non-trivial plugins will require extra modules to do their work. Typically
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* these include data classes, action classes, widget classes, or external libraries.
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*
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* This method receives a class name and loads the PHP file related to that class. By
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* tradition, action classes typically have files named for the action, all lower-case.
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* Data classes are in files with the data class name, initial letter capitalized.
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*
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* Note that this method will be called for *all* overloaded classes, not just ones
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* in this plugin! So, make sure to return true by default to let other plugins, and
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* the core code, get a chance.
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*
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* @param string $cls Name of the class to be loaded
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*
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* @return boolean hook value; true means continue processing, false means stop.
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*/
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public function onAutoload($cls) {
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$cls = basename($cls);
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$basedir = INSTALLDIR . '/local/plugins/' . mb_substr(get_called_class(), 0, -6);
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if (!file_exists($basedir)) {
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$basedir = INSTALLDIR . '/plugins/' . mb_substr(get_called_class(), 0, -6);
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}
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$file = null;
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if (preg_match('/^(\w+)(Action|Form)$/', $cls, $type)) {
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$type = array_map('strtolower', $type);
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$file = "$basedir/{$type[2]}s/{$type[1]}.php";
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}
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if (!file_exists($file)) {
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$file = "$basedir/classes/{$cls}.php";
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// library files can be put into subdirs ('_'->'/' conversion)
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// such as LRDDMethod_WebFinger -> lib/lrddmethod/webfinger.php
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if (!file_exists($file)) {
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$type = strtolower($cls);
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$type = str_replace('_', '/', $type);
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$file = "$basedir/lib/{$type}.php";
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}
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}
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if (!is_null($file) && file_exists($file)) {
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require_once($file);
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return false;
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}
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return true;
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}
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/**
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* Checks if this plugin has localization that needs to be set up.
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* Gettext localizations can be called via the _m() helper function.
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*/
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protected function setupGettext()
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{
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$class = get_class($this);
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if (substr($class, -6) == 'Plugin') {
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$name = substr($class, 0, -6);
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$path = common_config('plugins', 'locale_path');
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if (!$path) {
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// @fixme this will fail for things installed in local/plugins
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// ... but then so will web links so far.
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$path = INSTALLDIR . "/plugins/$name/locale";
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if (!file_exists($path)) {
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$path = INSTALLDIR . "/local/plugins/$name/locale";
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}
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}
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if (file_exists($path) && is_dir($path)) {
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bindtextdomain($name, $path);
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bind_textdomain_codeset($name, 'UTF-8');
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}
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}
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}
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protected function log($level, $msg)
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{
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common_log($level, get_class($this) . ': '.$msg);
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}
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protected function debug($msg)
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{
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$this->log(LOG_DEBUG, $msg);
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}
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public function name()
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{
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$cls = get_class($this);
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return mb_substr($cls, 0, -6);
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}
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public function version()
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{
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return GNUSOCIAL_VERSION;
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}
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protected function userAgent() {
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return HTTPClient::userAgent()
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. ' (' . get_class($this) . ' v' . $this->version() . ')';
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}
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function onPluginVersion(array &$versions)
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{
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$name = $this->name();
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$versions[] = array('name' => $name,
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// TRANS: Displayed as version information for a plugin if no version information was found.
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'version' => _('Unknown'));
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return true;
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}
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function path($relative)
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{
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return self::staticPath($this->name(), $relative);
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}
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static function staticPath($plugin, $relative)
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{
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if (GNUsocial::useHTTPS()) {
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$server = common_config('plugins', 'sslserver');
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} else {
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$server = common_config('plugins', 'server');
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}
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if (empty($server)) {
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if (GNUsocial::useHTTPS()) {
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$server = common_config('site', 'sslserver');
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}
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if (empty($server)) {
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$server = common_config('site', 'server');
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}
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}
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if (GNUsocial::useHTTPS()) {
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$path = common_config('plugins', 'sslpath');
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} else {
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$path = common_config('plugins', 'path');
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}
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if (empty($path)) {
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// XXX: extra stat().
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if (@file_exists(INSTALLDIR.'/local/plugins/'.$plugin.'/'.$relative)) {
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$path = common_config('site', 'path') . '/local/plugins/';
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} else {
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$path = common_config('site', 'path') . '/plugins/';
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}
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}
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if ($path[strlen($path)-1] != '/') {
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$path .= '/';
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}
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if ($path[0] != '/') {
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$path = '/'.$path;
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}
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$protocol = GNUsocial::useHTTPS() ? 'https' : 'http';
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return $protocol.'://'.$server.$path.$plugin.'/'.$relative;
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}
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}
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