diff options
Diffstat (limited to 'program/include/rcube_plugin_api.php')
| -rw-r--r-- | program/include/rcube_plugin_api.php | 495 |
1 files changed, 0 insertions, 495 deletions
diff --git a/program/include/rcube_plugin_api.php b/program/include/rcube_plugin_api.php deleted file mode 100644 index 51daf2797..000000000 --- a/program/include/rcube_plugin_api.php +++ /dev/null @@ -1,495 +0,0 @@ -<?php - -/* - +-----------------------------------------------------------------------+ - | program/include/rcube_plugin_api.php | - | | - | This file is part of the Roundcube Webmail client | - | Copyright (C) 2008-2011, 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: | - | Plugins repository | - | | - +-----------------------------------------------------------------------+ - | Author: Thomas Bruederli <roundcube@gmail.com> | - +-----------------------------------------------------------------------+ -*/ - -// location where plugins are loade from -if (!defined('RCMAIL_PLUGINS_DIR')) - define('RCMAIL_PLUGINS_DIR', INSTALL_PATH . 'plugins/'); - - -/** - * The plugin loader and global API - * - * @package Framework - * @subpackage PluginAPI - */ -class rcube_plugin_api -{ - static protected $instance; - - public $dir; - public $url = 'plugins/'; - public $task = ''; - public $output; - - public $handlers = array(); - protected $plugins = array(); - protected $tasks = array(); - protected $actions = array(); - protected $actionmap = array(); - protected $objectsmap = array(); - protected $template_contents = array(); - protected $active_hook = false; - - // Deprecated names of hooks, will be removed after 0.5-stable release - protected $deprecated_hooks = array( - 'create_user' => 'user_create', - 'kill_session' => 'session_destroy', - 'upload_attachment' => 'attachment_upload', - 'save_attachment' => 'attachment_save', - 'get_attachment' => 'attachment_get', - 'cleanup_attachments' => 'attachments_cleanup', - 'display_attachment' => 'attachment_display', - 'remove_attachment' => 'attachment_delete', - 'outgoing_message_headers' => 'message_outgoing_headers', - 'outgoing_message_body' => 'message_outgoing_body', - 'address_sources' => 'addressbooks_list', - 'get_address_book' => 'addressbook_get', - 'create_contact' => 'contact_create', - 'save_contact' => 'contact_update', - 'contact_save' => 'contact_update', - 'delete_contact' => 'contact_delete', - 'manage_folders' => 'folders_list', - 'list_mailboxes' => 'mailboxes_list', - 'save_preferences' => 'preferences_save', - 'user_preferences' => 'preferences_list', - 'list_prefs_sections' => 'preferences_sections_list', - 'list_identities' => 'identities_list', - 'create_identity' => 'identity_create', - 'delete_identity' => 'identity_delete', - 'save_identity' => 'identity_update', - 'identity_save' => 'identity_update', - // to be removed after 0.8 - 'imap_init' => 'storage_init', - 'mailboxes_list' => 'storage_folders', - ); - - /** - * This implements the 'singleton' design pattern - * - * @return rcube_plugin_api The one and only instance if this class - */ - static function get_instance() - { - if (!self::$instance) { - self::$instance = new rcube_plugin_api(); - } - - return self::$instance; - } - - - /** - * Private constructor - */ - protected function __construct() - { - $this->dir = slashify(RCMAIL_PLUGINS_DIR); - } - - - /** - * Initialize plugin engine - * - * This has to be done after rcmail::load_gui() or rcmail::json_init() - * was called because plugins need to have access to rcmail->output - * - * @param object rcube Instance of the rcube base class - * @param string Current application task (used for conditional plugin loading) - */ - public function init($app, $task = '') - { - $this->task = $task; - $this->output = $app->output; - - // register an internal hook - $this->register_hook('template_container', array($this, 'template_container_hook')); - - // maybe also register a shudown function which triggers shutdown functions of all plugin objects - } - - - /** - * Load and init all enabled plugins - * - * This has to be done after rcmail::load_gui() or rcmail::json_init() - * was called because plugins need to have access to rcmail->output - * - * @param array List of configured plugins to load - * @param array List of plugins required by the application - */ - public function load_plugins($plugins_enabled, $required_plugins = array()) - { - foreach ($plugins_enabled as $plugin_name) { - $this->load_plugin($plugin_name); - } - - // check existance of all required core plugins - foreach ($required_plugins as $plugin_name) { - $loaded = false; - foreach ($this->plugins as $plugin) { - if ($plugin instanceof $plugin_name) { - $loaded = true; - break; - } - } - - // load required core plugin if no derivate was found - if (!$loaded) - $loaded = $this->load_plugin($plugin_name); - - // trigger fatal error if still not loaded - if (!$loaded) { - rcube::raise_error(array('code' => 520, 'type' => 'php', - 'file' => __FILE__, 'line' => __LINE__, - 'message' => "Requried plugin $plugin_name was not loaded"), true, true); - } - } - } - - /** - * Load the specified plugin - * - * @param string Plugin name - * @return boolean True on success, false if not loaded or failure - */ - public function load_plugin($plugin_name) - { - static $plugins_dir; - - if (!$plugins_dir) { - $dir = dir($this->dir); - $plugins_dir = unslashify($dir->path); - } - - // plugin already loaded - if ($this->plugins[$plugin_name] || class_exists($plugin_name, false)) - return true; - - $fn = $plugins_dir . DIRECTORY_SEPARATOR . $plugin_name . DIRECTORY_SEPARATOR . $plugin_name . '.php'; - - if (file_exists($fn)) { - include($fn); - - // instantiate class if exists - if (class_exists($plugin_name, false)) { - $plugin = new $plugin_name($this); - // check inheritance... - if (is_subclass_of($plugin, 'rcube_plugin')) { - // ... task, request type and framed mode - if ((!$plugin->task || preg_match('/^('.$plugin->task.')$/i', $this->task)) - && (!$plugin->noajax || (is_object($this->output) && $this->output->type == 'html')) - && (!$plugin->noframe || empty($_REQUEST['_framed'])) - ) { - $plugin->init(); - $this->plugins[$plugin_name] = $plugin; - } - return true; - } - } - else { - rcube::raise_error(array('code' => 520, 'type' => 'php', - 'file' => __FILE__, 'line' => __LINE__, - 'message' => "No plugin class $plugin_name found in $fn"), true, false); - } - } - else { - rcube::raise_error(array('code' => 520, 'type' => 'php', - 'file' => __FILE__, 'line' => __LINE__, - 'message' => "Failed to load plugin file $fn"), true, false); - } - - return false; - } - - - /** - * Allows a plugin object to register a callback for a certain hook - * - * @param string $hook Hook name - * @param mixed $callback String with global function name or array($obj, 'methodname') - */ - public function register_hook($hook, $callback) - { - if (is_callable($callback)) { - if (isset($this->deprecated_hooks[$hook])) { - rcube::raise_error(array('code' => 522, 'type' => 'php', - 'file' => __FILE__, 'line' => __LINE__, - 'message' => "Deprecated hook name. ".$hook.' -> '.$this->deprecated_hooks[$hook]), true, false); - $hook = $this->deprecated_hooks[$hook]; - } - $this->handlers[$hook][] = $callback; - } - else - rcube::raise_error(array('code' => 521, 'type' => 'php', - 'file' => __FILE__, 'line' => __LINE__, - 'message' => "Invalid callback function for $hook"), true, false); - } - - /** - * Allow a plugin object to unregister a callback. - * - * @param string $hook Hook name - * @param mixed $callback String with global function name or array($obj, 'methodname') - */ - public function unregister_hook($hook, $callback) - { - $callback_id = array_search($callback, $this->handlers[$hook]); - if ($callback_id !== false) { - unset($this->handlers[$hook][$callback_id]); - } - } - - - /** - * Triggers a plugin hook. - * This is called from the application and executes all registered handlers - * - * @param string $hook Hook name - * @param array $args Named arguments (key->value pairs) - * @return array The (probably) altered hook arguments - */ - public function exec_hook($hook, $args = array()) - { - if (!is_array($args)) - $args = array('arg' => $args); - - $args += array('abort' => false); - $this->active_hook = $hook; - - foreach ((array)$this->handlers[$hook] as $callback) { - $ret = call_user_func($callback, $args); - if ($ret && is_array($ret)) - $args = $ret + $args; - - if ($args['abort']) - break; - } - - $this->active_hook = false; - return $args; - } - - - /** - * Let a plugin register a handler for a specific request - * - * @param string $action Action name (_task=mail&_action=plugin.foo) - * @param string $owner Plugin name that registers this action - * @param mixed $callback Callback: string with global function name or array($obj, 'methodname') - * @param string $task Task name registered by this plugin - */ - public function register_action($action, $owner, $callback, $task = null) - { - // check action name - if ($task) - $action = $task.'.'.$action; - else if (strpos($action, 'plugin.') !== 0) - $action = 'plugin.'.$action; - - // can register action only if it's not taken or registered by myself - if (!isset($this->actionmap[$action]) || $this->actionmap[$action] == $owner) { - $this->actions[$action] = $callback; - $this->actionmap[$action] = $owner; - } - else { - rcube::raise_error(array('code' => 523, 'type' => 'php', - 'file' => __FILE__, 'line' => __LINE__, - 'message' => "Cannot register action $action; already taken by another plugin"), true, false); - } - } - - - /** - * This method handles requests like _task=mail&_action=plugin.foo - * It executes the callback function that was registered with the given action. - * - * @param string $action Action name - */ - public function exec_action($action) - { - if (isset($this->actions[$action])) { - call_user_func($this->actions[$action]); - } - else if (rcube::get_instance()->action != 'refresh') { - rcube::raise_error(array('code' => 524, 'type' => 'php', - 'file' => __FILE__, 'line' => __LINE__, - 'message' => "No handler found for action $action"), true, true); - } - } - - - /** - * Register a handler function for template objects - * - * @param string $name Object name - * @param string $owner Plugin name that registers this action - * @param mixed $callback Callback: string with global function name or array($obj, 'methodname') - */ - public function register_handler($name, $owner, $callback) - { - // check name - if (strpos($name, 'plugin.') !== 0) - $name = 'plugin.'.$name; - - // can register handler only if it's not taken or registered by myself - if (is_object($this->output) && (!isset($this->objectsmap[$name]) || $this->objectsmap[$name] == $owner)) { - $this->output->add_handler($name, $callback); - $this->objectsmap[$name] = $owner; - } - else { - rcube::raise_error(array('code' => 525, 'type' => 'php', - 'file' => __FILE__, 'line' => __LINE__, - 'message' => "Cannot register template handler $name; already taken by another plugin or no output object available"), true, false); - } - } - - - /** - * Register this plugin to be responsible for a specific task - * - * @param string $task Task name (only characters [a-z0-9_.-] are allowed) - * @param string $owner Plugin name that registers this action - */ - public function register_task($task, $owner) - { - if ($task != asciiwords($task)) { - rcube::raise_error(array('code' => 526, 'type' => 'php', - 'file' => __FILE__, 'line' => __LINE__, - 'message' => "Invalid task name: $task. Only characters [a-z0-9_.-] are allowed"), true, false); - } - else if (in_array($task, rcmail::$main_tasks)) { - rcube::raise_error(array('code' => 526, 'type' => 'php', - 'file' => __FILE__, 'line' => __LINE__, - 'message' => "Cannot register taks $task; already taken by another plugin or the application itself"), true, false); - } - else { - $this->tasks[$task] = $owner; - rcmail::$main_tasks[] = $task; - return true; - } - - return false; - } - - - /** - * Checks whether the given task is registered by a plugin - * - * @param string $task Task name - * @return boolean True if registered, otherwise false - */ - public function is_plugin_task($task) - { - return $this->tasks[$task] ? true : false; - } - - - /** - * Check if a plugin hook is currently processing. - * Mainly used to prevent loops and recursion. - * - * @param string $hook Hook to check (optional) - * @return boolean True if any/the given hook is currently processed, otherwise false - */ - public function is_processing($hook = null) - { - return $this->active_hook && (!$hook || $this->active_hook == $hook); - } - - /** - * Include a plugin script file in the current HTML page - * - * @param string $fn Path to script - */ - public function include_script($fn) - { - if (is_object($this->output) && $this->output->type == 'html') { - $src = $this->resource_url($fn); - $this->output->add_header(html::tag('script', array('type' => "text/javascript", 'src' => $src))); - } - } - - - /** - * Include a plugin stylesheet in the current HTML page - * - * @param string $fn Path to stylesheet - */ - public function include_stylesheet($fn) - { - if (is_object($this->output) && $this->output->type == 'html') { - $src = $this->resource_url($fn); - $this->output->include_css($src); - } - } - - - /** - * Save the given HTML content to be added to a template container - * - * @param string $html HTML content - * @param string $container Template container identifier - */ - public function add_content($html, $container) - { - $this->template_contents[$container] .= $html . "\n"; - } - - - /** - * Returns list of loaded plugins names - * - * @return array List of plugin names - */ - public function loaded_plugins() - { - return array_keys($this->plugins); - } - - - /** - * Callback for template_container hooks - * - * @param array $attrib - * @return array - */ - protected function template_container_hook($attrib) - { - $container = $attrib['name']; - return array('content' => $attrib['content'] . $this->template_contents[$container]); - } - - - /** - * Make the given file name link into the plugins directory - * - * @param string $fn Filename - * @return string - */ - protected function resource_url($fn) - { - if ($fn[0] != '/' && !preg_match('|^https?://|i', $fn)) - return $this->url . $fn; - else - return $fn; - } - -} |