+-----------------------------------------------------------------------+
| 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: rcube_plugin_api.php 5207 2011-09-12 12:52:01Z alec $
*/
/**
* 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 $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
*/
{
$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 || preg_match('/('.$plugin->task.')/i', $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_once($fn);
-
- if (class_exists($plugin_name, false)) {
- $plugin = new $plugin_name($this);
- // check inheritance
- if (is_subclass_of($plugin, 'rcube_plugin')) {
- if (!$plugin->task || preg_match('/('.$plugin->task.')/i', $rcmail->task)) {
- $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_object($rcmail->output) && is_a($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 to check (optional)
+ * @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)
{
}
}
+
/**
* 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 = $this->resource_url($fn);
- $this->output->add_header(html::tag('link', array('rel' => "stylesheet", 'type' => "text/css", 'href' => $src)));
+ $this->output->include_css($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 $attrib
+ * @return array
*/
private function template_container_hook($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 $fn Filename
+ * @return string
*/
private function resource_url($fn)
{
}
}
-
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