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1 | <?php | |
2 | class PluginHost { | |
3 | private $dbh; | |
4 | private $hooks = array(); | |
5 | private $plugins = array(); | |
6 | private $handlers = array(); | |
7 | private $commands = array(); | |
8 | private $storage = array(); | |
9 | private $feeds = array(); | |
10 | private $api_methods = array(); | |
11 | private $plugin_actions = array(); | |
12 | private $owner_uid; | |
13 | private $debug; | |
14 | private $last_registered; | |
15 | private static $instance; | |
16 | ||
17 | const API_VERSION = 2; | |
18 | ||
19 | // Hooks marked with *1 are run in global context and available | |
20 | // to plugins loaded in config.php only | |
21 | ||
22 | const HOOK_ARTICLE_BUTTON = 1; | |
23 | const HOOK_ARTICLE_FILTER = 2; | |
24 | const HOOK_PREFS_TAB = 3; | |
25 | const HOOK_PREFS_TAB_SECTION = 4; | |
26 | const HOOK_PREFS_TABS = 5; | |
27 | const HOOK_FEED_PARSED = 6; | |
28 | const HOOK_UPDATE_TASK = 7; // *1 | |
29 | const HOOK_AUTH_USER = 8; | |
30 | const HOOK_HOTKEY_MAP = 9; | |
31 | const HOOK_RENDER_ARTICLE = 10; | |
32 | const HOOK_RENDER_ARTICLE_CDM = 11; | |
33 | const HOOK_FEED_FETCHED = 12; | |
34 | const HOOK_SANITIZE = 13; | |
35 | const HOOK_RENDER_ARTICLE_API = 14; | |
36 | const HOOK_TOOLBAR_BUTTON = 15; | |
37 | const HOOK_ACTION_ITEM = 16; | |
38 | const HOOK_HEADLINE_TOOLBAR_BUTTON = 17; | |
39 | const HOOK_HOTKEY_INFO = 18; | |
40 | const HOOK_ARTICLE_LEFT_BUTTON = 19; | |
41 | const HOOK_PREFS_EDIT_FEED = 20; | |
42 | const HOOK_PREFS_SAVE_FEED = 21; | |
43 | const HOOK_FETCH_FEED = 22; | |
44 | const HOOK_QUERY_HEADLINES = 23; | |
45 | const HOOK_HOUSE_KEEPING = 24; // *1 | |
46 | const HOOK_SEARCH = 25; | |
47 | const HOOK_FORMAT_ENCLOSURES = 26; | |
48 | const HOOK_SUBSCRIBE_FEED = 27; | |
49 | const HOOK_HEADLINES_BEFORE = 28; | |
50 | const HOOK_RENDER_ENCLOSURE = 29; | |
51 | const HOOK_ARTICLE_FILTER_ACTION = 30; | |
52 | ||
53 | const KIND_ALL = 1; | |
54 | const KIND_SYSTEM = 2; | |
55 | const KIND_USER = 3; | |
56 | ||
57 | function __construct() { | |
58 | $this->dbh = Db::get(); | |
59 | ||
60 | $this->storage = array(); | |
61 | } | |
62 | ||
63 | private function __clone() { | |
64 | // | |
65 | } | |
66 | ||
67 | public static function getInstance() { | |
68 | if (self::$instance == null) | |
69 | self::$instance = new self(); | |
70 | ||
71 | return self::$instance; | |
72 | } | |
73 | ||
74 | private function register_plugin($name, $plugin) { | |
75 | //array_push($this->plugins, $plugin); | |
76 | $this->plugins[$name] = $plugin; | |
77 | } | |
78 | ||
79 | // needed for compatibility with API 1 | |
80 | function get_link() { | |
81 | return false; | |
82 | } | |
83 | ||
84 | function get_dbh() { | |
85 | return $this->dbh; | |
86 | } | |
87 | ||
88 | function get_plugin_names() { | |
89 | $names = array(); | |
90 | ||
91 | foreach ($this->plugins as $p) { | |
92 | array_push($names, get_class($p)); | |
93 | } | |
94 | ||
95 | return $names; | |
96 | } | |
97 | ||
98 | function get_plugins() { | |
99 | return $this->plugins; | |
100 | } | |
101 | ||
102 | function get_plugin($name) { | |
103 | return $this->plugins[strtolower($name)]; | |
104 | } | |
105 | ||
106 | function run_hooks($type, $method, $args) { | |
107 | foreach ($this->get_hooks($type) as $hook) { | |
108 | $hook->$method($args); | |
109 | } | |
110 | } | |
111 | ||
112 | function add_hook($type, $sender) { | |
113 | if (!is_array($this->hooks[$type])) { | |
114 | $this->hooks[$type] = array(); | |
115 | } | |
116 | ||
117 | array_push($this->hooks[$type], $sender); | |
118 | } | |
119 | ||
120 | function del_hook($type, $sender) { | |
121 | if (is_array($this->hooks[$type])) { | |
122 | $key = array_Search($sender, $this->hooks[$type]); | |
123 | if ($key !== FALSE) { | |
124 | unset($this->hooks[$type][$key]); | |
125 | } | |
126 | } | |
127 | } | |
128 | ||
129 | function get_hooks($type) { | |
130 | if (isset($this->hooks[$type])) { | |
131 | return $this->hooks[$type]; | |
132 | } else { | |
133 | return array(); | |
134 | } | |
135 | } | |
136 | function load_all($kind, $owner_uid = false, $skip_init = false) { | |
137 | ||
138 | $plugins = array_merge(glob("plugins/*"), glob("plugins.local/*")); | |
139 | $plugins = array_filter($plugins, "is_dir"); | |
140 | $plugins = array_map("basename", $plugins); | |
141 | ||
142 | asort($plugins); | |
143 | ||
144 | $this->load(join(",", $plugins), $kind, $owner_uid, $skip_init); | |
145 | } | |
146 | ||
147 | function load($classlist, $kind, $owner_uid = false, $skip_init = false) { | |
148 | $plugins = explode(",", $classlist); | |
149 | ||
150 | $this->owner_uid = (int) $owner_uid; | |
151 | ||
152 | foreach ($plugins as $class) { | |
153 | $class = trim($class); | |
154 | $class_file = strtolower(basename($class)); | |
155 | ||
156 | if (!is_dir(__DIR__."/../plugins/$class_file") && | |
157 | !is_dir(__DIR__."/../plugins.local/$class_file")) continue; | |
158 | ||
159 | // try system plugin directory first | |
160 | $file = __DIR__ . "/../plugins/$class_file/init.php"; | |
161 | ||
162 | if (!file_exists($file)) { | |
163 | $file = __DIR__ . "/../plugins.local/$class_file/init.php"; | |
164 | } | |
165 | ||
166 | if (!isset($this->plugins[$class])) { | |
167 | if (file_exists($file)) require_once $file; | |
168 | ||
169 | if (class_exists($class) && is_subclass_of($class, "Plugin")) { | |
170 | $plugin = new $class($this); | |
171 | ||
172 | $plugin_api = $plugin->api_version(); | |
173 | ||
174 | if ($plugin_api < PluginHost::API_VERSION) { | |
175 | user_error("Plugin $class is not compatible with current API version (need: " . PluginHost::API_VERSION . ", got: $plugin_api)", E_USER_WARNING); | |
176 | continue; | |
177 | } | |
178 | ||
179 | $this->last_registered = $class; | |
180 | ||
181 | switch ($kind) { | |
182 | case $this::KIND_SYSTEM: | |
183 | if ($this->is_system($plugin)) { | |
184 | if (!$skip_init) $plugin->init($this); | |
185 | $this->register_plugin($class, $plugin); | |
186 | } | |
187 | break; | |
188 | case $this::KIND_USER: | |
189 | if (!$this->is_system($plugin)) { | |
190 | if (!$skip_init) $plugin->init($this); | |
191 | $this->register_plugin($class, $plugin); | |
192 | } | |
193 | break; | |
194 | case $this::KIND_ALL: | |
195 | if (!$skip_init) $plugin->init($this); | |
196 | $this->register_plugin($class, $plugin); | |
197 | break; | |
198 | } | |
199 | } | |
200 | } | |
201 | } | |
202 | } | |
203 | ||
204 | function is_system($plugin) { | |
205 | $about = $plugin->about(); | |
206 | ||
207 | return @$about[3]; | |
208 | } | |
209 | ||
210 | // only system plugins are allowed to modify routing | |
211 | function add_handler($handler, $method, $sender) { | |
212 | $handler = str_replace("-", "_", strtolower($handler)); | |
213 | $method = strtolower($method); | |
214 | ||
215 | if ($this->is_system($sender)) { | |
216 | if (!is_array($this->handlers[$handler])) { | |
217 | $this->handlers[$handler] = array(); | |
218 | } | |
219 | ||
220 | $this->handlers[$handler][$method] = $sender; | |
221 | } | |
222 | } | |
223 | ||
224 | function del_handler($handler, $method, $sender) { | |
225 | $handler = str_replace("-", "_", strtolower($handler)); | |
226 | $method = strtolower($method); | |
227 | ||
228 | if ($this->is_system($sender)) { | |
229 | unset($this->handlers[$handler][$method]); | |
230 | } | |
231 | } | |
232 | ||
233 | function lookup_handler($handler, $method) { | |
234 | $handler = str_replace("-", "_", strtolower($handler)); | |
235 | $method = strtolower($method); | |
236 | ||
237 | if (is_array($this->handlers[$handler])) { | |
238 | if (isset($this->handlers[$handler]["*"])) { | |
239 | return $this->handlers[$handler]["*"]; | |
240 | } else { | |
241 | return $this->handlers[$handler][$method]; | |
242 | } | |
243 | } | |
244 | ||
245 | return false; | |
246 | } | |
247 | ||
248 | function add_command($command, $description, $sender, $suffix = "", $arghelp = "") { | |
249 | $command = str_replace("-", "_", strtolower($command)); | |
250 | ||
251 | $this->commands[$command] = array("description" => $description, | |
252 | "suffix" => $suffix, | |
253 | "arghelp" => $arghelp, | |
254 | "class" => $sender); | |
255 | } | |
256 | ||
257 | function del_command($command) { | |
258 | $command = "-" . strtolower($command); | |
259 | ||
260 | unset($this->commands[$command]); | |
261 | } | |
262 | ||
263 | function lookup_command($command) { | |
264 | $command = "-" . strtolower($command); | |
265 | ||
266 | if (is_array($this->commands[$command])) { | |
267 | return $this->commands[$command]["class"]; | |
268 | } else { | |
269 | return false; | |
270 | } | |
271 | ||
272 | return false; | |
273 | } | |
274 | ||
275 | function get_commands() { | |
276 | return $this->commands; | |
277 | } | |
278 | ||
279 | function run_commands($args) { | |
280 | foreach ($this->get_commands() as $command => $data) { | |
281 | if (isset($args[$command])) { | |
282 | $command = str_replace("-", "", $command); | |
283 | $data["class"]->$command($args); | |
284 | } | |
285 | } | |
286 | } | |
287 | ||
288 | function load_data($force = false) { | |
289 | if ($this->owner_uid) { | |
290 | $result = $this->dbh->query("SELECT name, content FROM ttrss_plugin_storage | |
291 | WHERE owner_uid = '".$this->owner_uid."'"); | |
292 | ||
293 | while ($line = $this->dbh->fetch_assoc($result)) { | |
294 | $this->storage[$line["name"]] = unserialize($line["content"]); | |
295 | } | |
296 | } | |
297 | } | |
298 | ||
299 | private function save_data($plugin) { | |
300 | if ($this->owner_uid) { | |
301 | $plugin = $this->dbh->escape_string($plugin); | |
302 | ||
303 | $this->dbh->query("BEGIN"); | |
304 | ||
305 | $result = $this->dbh->query("SELECT id FROM ttrss_plugin_storage WHERE | |
306 | owner_uid= '".$this->owner_uid."' AND name = '$plugin'"); | |
307 | ||
308 | if (!isset($this->storage[$plugin])) | |
309 | $this->storage[$plugin] = array(); | |
310 | ||
311 | $content = $this->dbh->escape_string(serialize($this->storage[$plugin]), | |
312 | false); | |
313 | ||
314 | if ($this->dbh->num_rows($result) != 0) { | |
315 | $this->dbh->query("UPDATE ttrss_plugin_storage SET content = '$content' | |
316 | WHERE owner_uid= '".$this->owner_uid."' AND name = '$plugin'"); | |
317 | ||
318 | } else { | |
319 | $this->dbh->query("INSERT INTO ttrss_plugin_storage | |
320 | (name,owner_uid,content) VALUES | |
321 | ('$plugin','".$this->owner_uid."','$content')"); | |
322 | } | |
323 | ||
324 | $this->dbh->query("COMMIT"); | |
325 | } | |
326 | } | |
327 | ||
328 | function set($sender, $name, $value, $sync = true) { | |
329 | $idx = get_class($sender); | |
330 | ||
331 | if (!isset($this->storage[$idx])) | |
332 | $this->storage[$idx] = array(); | |
333 | ||
334 | $this->storage[$idx][$name] = $value; | |
335 | ||
336 | if ($sync) $this->save_data(get_class($sender)); | |
337 | } | |
338 | ||
339 | function get($sender, $name, $default_value = false) { | |
340 | $idx = get_class($sender); | |
341 | ||
342 | if (isset($this->storage[$idx][$name])) { | |
343 | return $this->storage[$idx][$name]; | |
344 | } else { | |
345 | return $default_value; | |
346 | } | |
347 | } | |
348 | ||
349 | function get_all($sender) { | |
350 | $idx = get_class($sender); | |
351 | ||
352 | return $this->storage[$idx]; | |
353 | } | |
354 | ||
355 | function clear_data($sender) { | |
356 | if ($this->owner_uid) { | |
357 | $idx = get_class($sender); | |
358 | ||
359 | unset($this->storage[$idx]); | |
360 | ||
361 | $this->dbh->query("DELETE FROM ttrss_plugin_storage WHERE name = '$idx' | |
362 | AND owner_uid = " . $this->owner_uid); | |
363 | } | |
364 | } | |
365 | ||
366 | function set_debug($debug) { | |
367 | $this->debug = $debug; | |
368 | } | |
369 | ||
370 | function get_debug() { | |
371 | return $this->debug; | |
372 | } | |
373 | ||
374 | // Plugin feed functions are *EXPERIMENTAL*! | |
375 | ||
376 | // cat_id: only -1 is supported (Special) | |
377 | function add_feed($cat_id, $title, $icon, $sender) { | |
378 | if (!$this->feeds[$cat_id]) $this->feeds[$cat_id] = array(); | |
379 | ||
380 | $id = count($this->feeds[$cat_id]); | |
381 | ||
382 | array_push($this->feeds[$cat_id], | |
383 | array('id' => $id, 'title' => $title, 'sender' => $sender, 'icon' => $icon)); | |
384 | ||
385 | return $id; | |
386 | } | |
387 | ||
388 | function get_feeds($cat_id) { | |
389 | return $this->feeds[$cat_id]; | |
390 | } | |
391 | ||
392 | // convert feed_id (e.g. -129) to pfeed_id first | |
393 | function get_feed_handler($pfeed_id) { | |
394 | foreach ($this->feeds as $cat) { | |
395 | foreach ($cat as $feed) { | |
396 | if ($feed['id'] == $pfeed_id) { | |
397 | return $feed['sender']; | |
398 | } | |
399 | } | |
400 | } | |
401 | } | |
402 | ||
403 | static function pfeed_to_feed_id($label) { | |
404 | return PLUGIN_FEED_BASE_INDEX - 1 - abs($label); | |
405 | } | |
406 | ||
407 | static function feed_to_pfeed_id($feed) { | |
408 | return PLUGIN_FEED_BASE_INDEX - 1 + abs($feed); | |
409 | } | |
410 | ||
411 | function add_api_method($name, $sender) { | |
412 | if ($this->is_system($sender)) { | |
413 | $this->api_methods[strtolower($name)] = $sender; | |
414 | } | |
415 | } | |
416 | ||
417 | function get_api_method($name) { | |
418 | return $this->api_methods[$name]; | |
419 | } | |
420 | ||
421 | function add_filter_action($sender, $action_name, $action_desc) { | |
422 | $sender_class = get_class($sender); | |
423 | ||
424 | if (!isset($this->plugin_actions[$sender_class])) | |
425 | $this->plugin_actions[$sender_class] = array(); | |
426 | ||
427 | array_push($this->plugin_actions[$sender_class], | |
428 | array("action" => $action_name, "description" => $action_desc, "sender" => $sender)); | |
429 | } | |
430 | ||
431 | function get_filter_actions() { | |
432 | return $this->plugin_actions; | |
433 | } | |
434 | } | |
435 | ?> |