437 line
10 KiB
PHP
437 line
10 KiB
PHP
<?php
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class PluginHost {
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private $dbh;
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private $hooks = array();
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private $plugins = array();
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private $handlers = array();
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private $commands = array();
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private $storage = array();
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private $feeds = array();
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private $api_methods = array();
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private $plugin_actions = array();
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private $owner_uid;
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private $debug;
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private $last_registered;
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private static $instance;
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const API_VERSION = 2;
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// Hooks marked with *1 are run in global context and available
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// to plugins loaded in config.php only
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const HOOK_ARTICLE_BUTTON = 1;
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const HOOK_ARTICLE_FILTER = 2;
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const HOOK_PREFS_TAB = 3;
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const HOOK_PREFS_TAB_SECTION = 4;
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const HOOK_PREFS_TABS = 5;
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const HOOK_FEED_PARSED = 6;
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const HOOK_UPDATE_TASK = 7; // *1
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const HOOK_AUTH_USER = 8;
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const HOOK_HOTKEY_MAP = 9;
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const HOOK_RENDER_ARTICLE = 10;
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const HOOK_RENDER_ARTICLE_CDM = 11;
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const HOOK_FEED_FETCHED = 12;
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const HOOK_SANITIZE = 13;
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const HOOK_RENDER_ARTICLE_API = 14;
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const HOOK_TOOLBAR_BUTTON = 15;
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const HOOK_ACTION_ITEM = 16;
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const HOOK_HEADLINE_TOOLBAR_BUTTON = 17;
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const HOOK_HOTKEY_INFO = 18;
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const HOOK_ARTICLE_LEFT_BUTTON = 19;
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const HOOK_PREFS_EDIT_FEED = 20;
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const HOOK_PREFS_SAVE_FEED = 21;
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const HOOK_FETCH_FEED = 22;
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const HOOK_QUERY_HEADLINES = 23;
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const HOOK_HOUSE_KEEPING = 24; // *1
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const HOOK_SEARCH = 25;
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const HOOK_FORMAT_ENCLOSURES = 26;
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const HOOK_SUBSCRIBE_FEED = 27;
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const HOOK_HEADLINES_BEFORE = 28;
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const HOOK_RENDER_ENCLOSURE = 29;
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const HOOK_ARTICLE_FILTER_ACTION = 30;
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const HOOK_ARTICLE_EXPORT_FEED = 31;
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const HOOK_MAIN_TOOLBAR_BUTTON = 32;
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const KIND_ALL = 1;
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const KIND_SYSTEM = 2;
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const KIND_USER = 3;
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function __construct() {
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$this->dbh = Db::get();
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$this->storage = array();
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}
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private function __clone() {
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//
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}
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public static function getInstance() {
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if (self::$instance == null)
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self::$instance = new self();
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return self::$instance;
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}
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private function register_plugin($name, $plugin) {
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//array_push($this->plugins, $plugin);
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$this->plugins[$name] = $plugin;
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}
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// needed for compatibility with API 1
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function get_link() {
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return false;
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}
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function get_dbh() {
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return $this->dbh;
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}
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function get_plugin_names() {
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$names = array();
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foreach ($this->plugins as $p) {
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array_push($names, get_class($p));
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}
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return $names;
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}
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function get_plugins() {
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return $this->plugins;
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}
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function get_plugin($name) {
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return $this->plugins[strtolower($name)];
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}
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function run_hooks($type, $method, $args) {
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foreach ($this->get_hooks($type) as $hook) {
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$hook->$method($args);
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}
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}
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function add_hook($type, $sender) {
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if (!is_array($this->hooks[$type])) {
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$this->hooks[$type] = array();
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}
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array_push($this->hooks[$type], $sender);
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}
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function del_hook($type, $sender) {
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if (is_array($this->hooks[$type])) {
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$key = array_Search($sender, $this->hooks[$type]);
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if ($key !== FALSE) {
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unset($this->hooks[$type][$key]);
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}
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}
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}
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function get_hooks($type) {
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if (isset($this->hooks[$type])) {
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return $this->hooks[$type];
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} else {
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return array();
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}
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}
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function load_all($kind, $owner_uid = false, $skip_init = false) {
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$plugins = array_merge(glob("plugins/*"), glob("plugins.local/*"));
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$plugins = array_filter($plugins, "is_dir");
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$plugins = array_map("basename", $plugins);
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asort($plugins);
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$this->load(join(",", $plugins), $kind, $owner_uid, $skip_init);
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}
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function load($classlist, $kind, $owner_uid = false, $skip_init = false) {
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$plugins = explode(",", $classlist);
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$this->owner_uid = (int) $owner_uid;
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foreach ($plugins as $class) {
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$class = trim($class);
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$class_file = strtolower(basename($class));
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if (!is_dir(__DIR__."/../plugins/$class_file") &&
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!is_dir(__DIR__."/../plugins.local/$class_file")) continue;
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// try system plugin directory first
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$file = __DIR__ . "/../plugins/$class_file/init.php";
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if (!file_exists($file)) {
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$file = __DIR__ . "/../plugins.local/$class_file/init.php";
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}
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if (!isset($this->plugins[$class])) {
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if (file_exists($file)) require_once $file;
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if (class_exists($class) && is_subclass_of($class, "Plugin")) {
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$plugin = new $class($this);
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$plugin_api = $plugin->api_version();
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if ($plugin_api < PluginHost::API_VERSION) {
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user_error("Plugin $class is not compatible with current API version (need: " . PluginHost::API_VERSION . ", got: $plugin_api)", E_USER_WARNING);
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continue;
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}
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$this->last_registered = $class;
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switch ($kind) {
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case $this::KIND_SYSTEM:
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if ($this->is_system($plugin)) {
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if (!$skip_init) $plugin->init($this);
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$this->register_plugin($class, $plugin);
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}
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break;
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case $this::KIND_USER:
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if (!$this->is_system($plugin)) {
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if (!$skip_init) $plugin->init($this);
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$this->register_plugin($class, $plugin);
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}
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break;
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case $this::KIND_ALL:
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if (!$skip_init) $plugin->init($this);
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$this->register_plugin($class, $plugin);
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break;
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}
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}
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}
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}
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}
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function is_system($plugin) {
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$about = $plugin->about();
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return @$about[3];
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}
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// only system plugins are allowed to modify routing
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function add_handler($handler, $method, $sender) {
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$handler = str_replace("-", "_", strtolower($handler));
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$method = strtolower($method);
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if ($this->is_system($sender)) {
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if (!is_array($this->handlers[$handler])) {
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$this->handlers[$handler] = array();
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}
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$this->handlers[$handler][$method] = $sender;
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}
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}
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function del_handler($handler, $method, $sender) {
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$handler = str_replace("-", "_", strtolower($handler));
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$method = strtolower($method);
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if ($this->is_system($sender)) {
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unset($this->handlers[$handler][$method]);
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}
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}
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function lookup_handler($handler, $method) {
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$handler = str_replace("-", "_", strtolower($handler));
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$method = strtolower($method);
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if (is_array($this->handlers[$handler])) {
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if (isset($this->handlers[$handler]["*"])) {
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return $this->handlers[$handler]["*"];
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} else {
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return $this->handlers[$handler][$method];
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}
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}
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return false;
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}
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function add_command($command, $description, $sender, $suffix = "", $arghelp = "") {
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$command = str_replace("-", "_", strtolower($command));
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$this->commands[$command] = array("description" => $description,
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"suffix" => $suffix,
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"arghelp" => $arghelp,
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"class" => $sender);
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}
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function del_command($command) {
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$command = "-" . strtolower($command);
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unset($this->commands[$command]);
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}
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function lookup_command($command) {
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$command = "-" . strtolower($command);
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if (is_array($this->commands[$command])) {
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return $this->commands[$command]["class"];
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} else {
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return false;
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}
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return false;
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}
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function get_commands() {
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return $this->commands;
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}
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function run_commands($args) {
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foreach ($this->get_commands() as $command => $data) {
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if (isset($args[$command])) {
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$command = str_replace("-", "", $command);
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$data["class"]->$command($args);
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}
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}
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}
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function load_data($force = false) {
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if ($this->owner_uid) {
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$result = $this->dbh->query("SELECT name, content FROM ttrss_plugin_storage
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WHERE owner_uid = '".$this->owner_uid."'");
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while ($line = $this->dbh->fetch_assoc($result)) {
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$this->storage[$line["name"]] = unserialize($line["content"]);
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}
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}
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}
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private function save_data($plugin) {
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if ($this->owner_uid) {
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$plugin = $this->dbh->escape_string($plugin);
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$this->dbh->query("BEGIN");
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$result = $this->dbh->query("SELECT id FROM ttrss_plugin_storage WHERE
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owner_uid= '".$this->owner_uid."' AND name = '$plugin'");
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if (!isset($this->storage[$plugin]))
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$this->storage[$plugin] = array();
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$content = $this->dbh->escape_string(serialize($this->storage[$plugin]),
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false);
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if ($this->dbh->num_rows($result) != 0) {
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$this->dbh->query("UPDATE ttrss_plugin_storage SET content = '$content'
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WHERE owner_uid= '".$this->owner_uid."' AND name = '$plugin'");
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} else {
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$this->dbh->query("INSERT INTO ttrss_plugin_storage
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(name,owner_uid,content) VALUES
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('$plugin','".$this->owner_uid."','$content')");
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}
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$this->dbh->query("COMMIT");
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}
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}
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function set($sender, $name, $value, $sync = true) {
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$idx = get_class($sender);
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if (!isset($this->storage[$idx]))
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$this->storage[$idx] = array();
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$this->storage[$idx][$name] = $value;
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if ($sync) $this->save_data(get_class($sender));
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}
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function get($sender, $name, $default_value = false) {
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$idx = get_class($sender);
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if (isset($this->storage[$idx][$name])) {
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return $this->storage[$idx][$name];
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} else {
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return $default_value;
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}
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}
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function get_all($sender) {
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$idx = get_class($sender);
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return $this->storage[$idx];
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}
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function clear_data($sender) {
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if ($this->owner_uid) {
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$idx = get_class($sender);
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unset($this->storage[$idx]);
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$this->dbh->query("DELETE FROM ttrss_plugin_storage WHERE name = '$idx'
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AND owner_uid = " . $this->owner_uid);
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}
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}
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function set_debug($debug) {
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$this->debug = $debug;
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}
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function get_debug() {
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return $this->debug;
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}
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// Plugin feed functions are *EXPERIMENTAL*!
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// cat_id: only -1 is supported (Special)
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function add_feed($cat_id, $title, $icon, $sender) {
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if (!$this->feeds[$cat_id]) $this->feeds[$cat_id] = array();
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$id = count($this->feeds[$cat_id]);
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array_push($this->feeds[$cat_id],
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array('id' => $id, 'title' => $title, 'sender' => $sender, 'icon' => $icon));
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return $id;
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}
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function get_feeds($cat_id) {
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return $this->feeds[$cat_id];
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}
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// convert feed_id (e.g. -129) to pfeed_id first
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function get_feed_handler($pfeed_id) {
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foreach ($this->feeds as $cat) {
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foreach ($cat as $feed) {
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if ($feed['id'] == $pfeed_id) {
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return $feed['sender'];
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}
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}
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}
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}
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static function pfeed_to_feed_id($label) {
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return PLUGIN_FEED_BASE_INDEX - 1 - abs($label);
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}
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static function feed_to_pfeed_id($feed) {
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return PLUGIN_FEED_BASE_INDEX - 1 + abs($feed);
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}
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function add_api_method($name, $sender) {
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if ($this->is_system($sender)) {
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$this->api_methods[strtolower($name)] = $sender;
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}
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}
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function get_api_method($name) {
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return $this->api_methods[$name];
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}
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function add_filter_action($sender, $action_name, $action_desc) {
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$sender_class = get_class($sender);
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if (!isset($this->plugin_actions[$sender_class]))
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$this->plugin_actions[$sender_class] = array();
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array_push($this->plugin_actions[$sender_class],
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array("action" => $action_name, "description" => $action_desc, "sender" => $sender));
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}
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function get_filter_actions() {
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return $this->plugin_actions;
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}
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}
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?>
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