You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
452 lines
14 KiB
PHP
452 lines
14 KiB
PHP
<?php
|
|
|
|
/*
|
|
+-----------------------------------------------------------------------+
|
|
| program/include/rcube_plugin_api.php |
|
|
| |
|
|
| This file is part of the Roundcube Webmail client |
|
|
| Copyright (C) 2008-2009, The Roundcube Dev Team |
|
|
| Licensed under the GNU GPL |
|
|
| |
|
|
| PURPOSE: |
|
|
| Plugins repository |
|
|
| |
|
|
+-----------------------------------------------------------------------+
|
|
| Author: Thomas Bruederli <roundcube@gmail.com> |
|
|
+-----------------------------------------------------------------------+
|
|
|
|
$Id$
|
|
|
|
*/
|
|
|
|
/**
|
|
* The plugin loader and global API
|
|
*
|
|
* @package PluginAPI
|
|
*/
|
|
class rcube_plugin_api
|
|
{
|
|
static private $instance;
|
|
|
|
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 $deprecated_hooks = array(
|
|
'create_user' => 'user_create',
|
|
'kill_session' => 'session_destroy',
|
|
'upload_attachment' => 'attachment_upload',
|
|
'save_attachment' => 'attachment_save',
|
|
'get_attachment' => 'attachment_get',
|
|
'cleanup_attachments' => 'attachments_cleanup',
|
|
'display_attachment' => 'attachment_display',
|
|
'remove_attachment' => 'attachment_delete',
|
|
'outgoing_message_headers' => 'message_outgoing_headers',
|
|
'outgoing_message_body' => 'message_outgoing_body',
|
|
'address_sources' => 'addressbooks_list',
|
|
'get_address_book' => 'addressbook_get',
|
|
'create_contact' => 'contact_create',
|
|
'save_contact' => 'contact_update',
|
|
'contact_save' => 'contact_update',
|
|
'delete_contact' => 'contact_delete',
|
|
'manage_folders' => 'folders_list',
|
|
'list_mailboxes' => 'mailboxes_list',
|
|
'save_preferences' => 'preferences_save',
|
|
'user_preferences' => 'preferences_list',
|
|
'list_prefs_sections' => 'preferences_sections_list',
|
|
'list_identities' => 'identities_list',
|
|
'create_identity' => 'identity_create',
|
|
'delete_identity' => 'identity_delete',
|
|
'save_identity' => 'identity_update',
|
|
'identity_save' => 'identity_update',
|
|
);
|
|
|
|
/**
|
|
* This implements the 'singleton' design pattern
|
|
*
|
|
* @return rcube_plugin_api The one and only instance if this class
|
|
*/
|
|
static function get_instance()
|
|
{
|
|
if (!self::$instance) {
|
|
self::$instance = new rcube_plugin_api();
|
|
}
|
|
|
|
return self::$instance;
|
|
}
|
|
|
|
|
|
/**
|
|
* Private constructor
|
|
*/
|
|
private function __construct()
|
|
{
|
|
$this->dir = INSTALL_PATH . $this->url;
|
|
}
|
|
|
|
|
|
/**
|
|
* 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
|
|
*/
|
|
public function init()
|
|
{
|
|
$rcmail = rcmail::get_instance();
|
|
$this->output = $rcmail->output;
|
|
$this->config = $rcmail->config;
|
|
|
|
$plugins_enabled = (array)$rcmail->config->get('plugins', array());
|
|
foreach ($plugins_enabled as $plugin_name) {
|
|
$this->load_plugin($plugin_name);
|
|
}
|
|
|
|
// check existance of all required core plugins
|
|
foreach ($this->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) {
|
|
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
|
|
}
|
|
|
|
|
|
/**
|
|
* 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 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])) {
|
|
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',
|
|
'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 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 {
|
|
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 {
|
|
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 (!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',
|
|
'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 = $this->resource_url($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 = $this->resource_url($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' => $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)
|
|
{
|
|
if ($fn[0] != '/' && !preg_match('|^https?://|i', $fn))
|
|
return $this->url . $fn;
|
|
else
|
|
return $fn;
|
|
}
|
|
|
|
}
|