| | |
| | | +-----------------------------------------------------------------------+ |
| | | | program/include/rcube_plugin_api.php | |
| | | | | |
| | | | This file is part of the RoundCube Webmail client | |
| | | | Copyright (C) 2008-2009, RoundCube Dev. - Switzerland | |
| | | | This file is part of the Roundcube Webmail client | |
| | | | Copyright (C) 2008-2009, The Roundcube Dev Team | |
| | | | Licensed under the GNU GPL | |
| | | | | |
| | | | PURPOSE: | |
| | |
| | | | Author: Thomas Bruederli <roundcube@gmail.com> | |
| | | +-----------------------------------------------------------------------+ |
| | | |
| | | $Id: $ |
| | | $Id$ |
| | | |
| | | */ |
| | | |
| | | /** |
| | | * The plugin loader and global API |
| | | * |
| | | * @package Core |
| | | * @package PluginAPI |
| | | */ |
| | | class rcube_plugin_api |
| | | { |
| | |
| | | public $dir; |
| | | public $url = 'plugins/'; |
| | | public $output; |
| | | public $config; |
| | | |
| | | public $handlers = array(); |
| | | private $plugins = array(); |
| | | private $tasks = array(); |
| | | private $actions = array(); |
| | | private $actionmap = array(); |
| | | private $objectsmap = array(); |
| | | private $template_contents = array(); |
| | | |
| | | private $required_plugins = array('filesystem_attachments'); |
| | | private $required_plugins = array('filesystem_attachments'); |
| | | private $active_hook = false; |
| | | |
| | | // Deprecated names of hooks, will be removed after 0.5-stable release |
| | | private $deprecated_hooks = array( |
| | | 'create_user' => 'user_create', |
| | | 'kill_session' => 'session_destroy', |
| | | 'upload_attachment' => 'attachment_upload', |
| | | 'save_attachment' => 'attachment_save', |
| | | 'get_attachment' => 'attachment_get', |
| | | 'cleanup_attachments' => 'attachments_cleanup', |
| | | 'display_attachment' => 'attachment_display', |
| | | 'remove_attachment' => 'attachment_delete', |
| | | 'outgoing_message_headers' => 'message_outgoing_headers', |
| | | 'outgoing_message_body' => 'message_outgoing_body', |
| | | 'address_sources' => 'addressbooks_list', |
| | | 'get_address_book' => 'addressbook_get', |
| | | 'create_contact' => 'contact_create', |
| | | 'save_contact' => 'contact_update', |
| | | 'contact_save' => 'contact_update', |
| | | 'delete_contact' => 'contact_delete', |
| | | 'manage_folders' => 'folders_list', |
| | | 'list_mailboxes' => 'mailboxes_list', |
| | | 'save_preferences' => 'preferences_save', |
| | | 'user_preferences' => 'preferences_list', |
| | | 'list_prefs_sections' => 'preferences_sections_list', |
| | | 'list_identities' => 'identities_list', |
| | | 'create_identity' => 'identity_create', |
| | | 'delete_identity' => 'identity_delete', |
| | | 'save_identity' => 'identity_update', |
| | | 'identity_save' => 'identity_update', |
| | | ); |
| | | |
| | | /** |
| | | * This implements the 'singleton' design pattern |
| | | * |
| | | * @return object rcube_plugin_api The one and only instance if this class |
| | | * @return rcube_plugin_api The one and only instance if this class |
| | | */ |
| | | static function get_instance() |
| | | { |
| | |
| | | |
| | | return self::$instance; |
| | | } |
| | | |
| | | |
| | | |
| | | |
| | | /** |
| | | * Private constructor |
| | | */ |
| | | private function __construct() |
| | | { |
| | | $rcmail = rcmail::get_instance(); |
| | | $this->dir = realpath($rcmail->config->get('plugins_dir')); |
| | | $this->dir = INSTALL_PATH . $this->url; |
| | | } |
| | | |
| | | |
| | | |
| | | |
| | | /** |
| | | * Load and init all enabled plugins |
| | | * |
| | | * This has to be done after rcmail::load_gui() or rcmail::init_json() |
| | | * This has to be done after rcmail::load_gui() or rcmail::json_init() |
| | | * was called because plugins need to have access to rcmail->output |
| | | */ |
| | | public function init() |
| | | { |
| | | $rcmail = rcmail::get_instance(); |
| | | $this->output = $rcmail->output; |
| | | |
| | | $plugins_dir = dir($this->dir); |
| | | $this->config = $rcmail->config; |
| | | |
| | | $plugins_enabled = (array)$rcmail->config->get('plugins', array()); |
| | | |
| | | foreach ($plugins_enabled as $plugin_name) { |
| | | $fn = $plugins_dir->path . 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 and task specification |
| | | if (is_subclass_of($plugin, 'rcube_plugin') && (!$plugin->task || $plugin->task == $rcmail->task)) { |
| | | $plugin->init(); |
| | | $this->plugins[] = $plugin; |
| | | } |
| | | } |
| | | else { |
| | | raise_error(array('code' => 520, 'type' => 'php', 'message' => "No plugin class $plugin_name found in $fn"), true, false); |
| | | } |
| | | } |
| | | else { |
| | | raise_error(array('code' => 520, 'type' => 'php', 'message' => "Failed to load plugin file $fn"), true, false); |
| | | } |
| | | $this->load_plugin($plugin_name); |
| | | } |
| | | |
| | | |
| | | // check existance of all required core plugins |
| | | foreach ($this->required_plugins as $plugin_name) { |
| | | $loaded = false; |
| | |
| | | break; |
| | | } |
| | | } |
| | | |
| | | |
| | | // load required core plugin if no derivate was found |
| | | if (!$loaded) { |
| | | $fn = $plugins_dir->path . DIRECTORY_SEPARATOR . $plugin_name . DIRECTORY_SEPARATOR . $plugin_name . '.php'; |
| | | if (file_exists($fn)) { |
| | | include($fn); |
| | | |
| | | if (class_exists($plugin_name, false)) { |
| | | $plugin = new $plugin_name($this); |
| | | // check inheritance |
| | | if (is_subclass_of($plugin, 'rcube_plugin')) { |
| | | $plugin->init(); |
| | | $this->plugins[] = $plugin; |
| | | $loaded = true; |
| | | } |
| | | } |
| | | } |
| | | } |
| | | |
| | | if (!$loaded) |
| | | $loaded = $this->load_plugin($plugin_name); |
| | | |
| | | // trigger fatal error if still not loaded |
| | | if (!$loaded) { |
| | | raise_error(array('code' => 520, 'type' => 'php', 'message' => "Requried plugin $plugin_name was not loaded"), true, true); |
| | | raise_error(array('code' => 520, 'type' => 'php', |
| | | 'file' => __FILE__, 'line' => __LINE__, |
| | | 'message' => "Requried plugin $plugin_name was not loaded"), true, true); |
| | | } |
| | | } |
| | | |
| | | // 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 |
| | | |
| | | |
| | | // call imap_init right now |
| | | // (should actually be done in rcmail::imap_init() but plugins are not initialized then) |
| | | if ($rcmail->imap) { |
| | | $hook = $this->exec_hook('imap_init', array('fetch_headers' => $rcmail->imap->fetch_add_headers)); |
| | | if ($hook['fetch_headers']) |
| | | $rcmail->imap->fetch_add_headers = $hook['fetch_headers']; |
| | | } |
| | | } |
| | | |
| | | |
| | | |
| | | |
| | | /** |
| | | * Load the specified plugin |
| | | * |
| | | * @param string Plugin name |
| | | * @return boolean True on success, false if not loaded or failure |
| | | */ |
| | | public function load_plugin($plugin_name) |
| | | { |
| | | static $plugins_dir; |
| | | |
| | | $rcmail = rcmail::get_instance(); |
| | | |
| | | if (!$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', $rcmail->task)) |
| | | && (!$plugin->noajax || is_a($rcmail->output, 'rcube_template')) |
| | | && (!$plugin->noframe || empty($_REQUEST['_framed'])) |
| | | ) { |
| | | $plugin->init(); |
| | | $this->plugins[$plugin_name] = $plugin; |
| | | } |
| | | return true; |
| | | } |
| | | } |
| | | else { |
| | | raise_error(array('code' => 520, 'type' => 'php', |
| | | 'file' => __FILE__, 'line' => __LINE__, |
| | | 'message' => "No plugin class $plugin_name found in $fn"), true, false); |
| | | } |
| | | } |
| | | else { |
| | | raise_error(array('code' => 520, 'type' => 'php', |
| | | 'file' => __FILE__, 'line' => __LINE__, |
| | | 'message' => "Failed to load plugin file $fn"), true, false); |
| | | } |
| | | |
| | | return false; |
| | | } |
| | | |
| | | |
| | | /** |
| | | * Allows a plugin object to register a callback for a certain hook |
| | | * |
| | | * @param string Hook name |
| | | * @param mixed String with global function name or array($obj, 'methodname') |
| | | * @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 (is_callable($callback)) { |
| | | if (isset($this->deprecated_hooks[$hook])) { |
| | | raise_error(array('code' => 522, 'type' => 'php', |
| | | 'file' => __FILE__, 'line' => __LINE__, |
| | | 'message' => "Deprecated hook name. ".$hook.' -> '.$this->deprecated_hooks[$hook]), true, false); |
| | | $hook = $this->deprecated_hooks[$hook]; |
| | | } |
| | | $this->handlers[$hook][] = $callback; |
| | | } |
| | | else |
| | | raise_error(array('code' => 521, 'type' => 'php', 'message' => "Invalid callback function for $hook"), true, false); |
| | | raise_error(array('code' => 521, 'type' => 'php', |
| | | 'file' => __FILE__, 'line' => __LINE__, |
| | | 'message' => "Invalid callback function for $hook"), true, false); |
| | | } |
| | | |
| | | |
| | | |
| | | |
| | | /** |
| | | * Triggers a plugin hook. |
| | | * This is called from the application and executes all registered handlers |
| | | * |
| | | * @param string Hook name |
| | | * @param array Named arguments (key->value pairs) |
| | | * @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 $args; |
| | | } |
| | | |
| | |
| | | /** |
| | | * Let a plugin register a handler for a specific request |
| | | * |
| | | * @param string Action name (_task=mail&_action=plugin.foo) |
| | | * @param string Plugin name that registers this action |
| | | * @param mixed Callback: string with global function name or array($obj, 'methodname') |
| | | * @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, $callback) |
| | | public function register_action($action, $owner, $callback, $task = null) |
| | | { |
| | | // check action name |
| | | if (strpos($action, 'plugin.') !== 0) |
| | | 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 { |
| | | raise_error(array('code' => 523, 'type' => 'php', 'message' => "Cannot register action $action; already taken by another plugin"), true, false); |
| | | 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 name |
| | | * @param string $action Action name |
| | | */ |
| | | public function exec_action($action) |
| | | { |
| | |
| | | call_user_func($this->actions[$action]); |
| | | } |
| | | else { |
| | | raise_error(array('code' => 524, 'type' => 'php', 'message' => "No handler found for action $action"), true, true); |
| | | raise_error(array('code' => 524, 'type' => 'php', |
| | | 'file' => __FILE__, 'line' => __LINE__, |
| | | 'message' => "No handler found for action $action"), true, true); |
| | | } |
| | | } |
| | | |
| | |
| | | /** |
| | | * Register a handler function for template objects |
| | | * |
| | | * @param string Object name |
| | | * @param string Plugin name that registers this action |
| | | * @param mixed Callback: string with global function name or array($obj, 'methodname') |
| | | * @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 (!isset($this->objectsmap[$name]) || $this->objectsmap[$name] == $owner) { |
| | | $this->output->add_handler($name, $callback); |
| | | $this->objectsmap[$name] = $owner; |
| | | } |
| | | else { |
| | | raise_error(array('code' => 525, 'type' => 'php', 'message' => "Cannot register template handler $name; already taken by another plugin"), true, false); |
| | | raise_error(array('code' => 525, 'type' => 'php', |
| | | 'file' => __FILE__, 'line' => __LINE__, |
| | | 'message' => "Cannot register template handler $name; already taken by another plugin"), 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)) { |
| | | 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)) { |
| | | 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 ($this->output->type == 'html') { |
| | | $src = $this->ressource_url($fn); |
| | | $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 ($this->output->type == 'html') { |
| | | $src = $this->ressource_url($fn); |
| | | $this->output->add_header(html::tag('link', array('rel' => "stylesheet", 'type' => "text/css", 'href' => $src))); |
| | | $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"; |
| | | } |
| | | |
| | | |
| | | |
| | | /** |
| | | * Callback for template_container hooks |
| | | * |
| | | * @param array $attrib |
| | | * @return array |
| | | */ |
| | | private function template_container_hook($attrib) |
| | | { |
| | | $container = $attrib['name']; |
| | | return array('content' => $this->template_contents[$container]); |
| | | return array('content' => $attrib['content'] . $this->template_contents[$container]); |
| | | } |
| | | |
| | | |
| | | |
| | | /** |
| | | * Make the given file name link into the plugins directory |
| | | * |
| | | * @param string $fn Filename |
| | | * @return string |
| | | */ |
| | | private function ressource_url($fn) |
| | | private function resource_url($fn) |
| | | { |
| | | if ($fn[0] != '/' && !eregi('^https?://', $fn)) |
| | | if ($fn[0] != '/' && !preg_match('|^https?://|i', $fn)) |
| | | return $this->url . $fn; |
| | | else |
| | | return $fn; |
| | | } |
| | | |
| | | } |
| | | |