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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 | const HOOK_ARTICLE_EXPORT_FEED = 31; | |
53 | const HOOK_MAIN_TOOLBAR_BUTTON = 32; | |
54 | const HOOK_ENCLOSURE_ENTRY = 33; | |
55 | ||
56 | const KIND_ALL = 1; | |
57 | const KIND_SYSTEM = 2; | |
58 | const KIND_USER = 3; | |
59 | ||
60 | function __construct() { | |
61 | $this->dbh = Db::get(); | |
62 | ||
63 | $this->storage = array(); | |
64 | } | |
65 | ||
66 | private function __clone() { | |
67 | // | |
68 | } | |
69 | ||
70 | public static function getInstance() { | |
71 | if (self::$instance == null) | |
72 | self::$instance = new self(); | |
73 | ||
74 | return self::$instance; | |
75 | } | |
76 | ||
77 | private function register_plugin($name, $plugin) { | |
78 | //array_push($this->plugins, $plugin); | |
79 | $this->plugins[$name] = $plugin; | |
80 | } | |
81 | ||
82 | // needed for compatibility with API 1 | |
83 | function get_link() { | |
84 | return false; | |
85 | } | |
86 | ||
87 | function get_dbh() { | |
88 | return $this->dbh; | |
89 | } | |
90 | ||
91 | function get_plugin_names() { | |
92 | $names = array(); | |
93 | ||
94 | foreach ($this->plugins as $p) { | |
95 | array_push($names, get_class($p)); | |
96 | } | |
97 | ||
98 | return $names; | |
99 | } | |
100 | ||
101 | function get_plugins() { | |
102 | return $this->plugins; | |
103 | } | |
104 | ||
105 | function get_plugin($name) { | |
106 | return $this->plugins[strtolower($name)]; | |
107 | } | |
108 | ||
109 | function run_hooks($type, $method, $args) { | |
110 | foreach ($this->get_hooks($type) as $hook) { | |
111 | $hook->$method($args); | |
112 | } | |
113 | } | |
114 | ||
115 | function add_hook($type, $sender) { | |
116 | if (!is_array($this->hooks[$type])) { | |
117 | $this->hooks[$type] = array(); | |
118 | } | |
119 | ||
120 | array_push($this->hooks[$type], $sender); | |
121 | } | |
122 | ||
123 | function del_hook($type, $sender) { | |
124 | if (is_array($this->hooks[$type])) { | |
125 | $key = array_Search($sender, $this->hooks[$type]); | |
126 | if ($key !== FALSE) { | |
127 | unset($this->hooks[$type][$key]); | |
128 | } | |
129 | } | |
130 | } | |
131 | ||
132 | function get_hooks($type) { | |
133 | if (isset($this->hooks[$type])) { | |
134 | return $this->hooks[$type]; | |
135 | } else { | |
136 | return array(); | |
137 | } | |
138 | } | |
139 | function load_all($kind, $owner_uid = false, $skip_init = false) { | |
140 | ||
141 | $plugins = array_merge(glob("plugins/*"), glob("plugins.local/*")); | |
142 | $plugins = array_filter($plugins, "is_dir"); | |
143 | $plugins = array_map("basename", $plugins); | |
144 | ||
145 | asort($plugins); | |
146 | ||
147 | $this->load(join(",", $plugins), $kind, $owner_uid, $skip_init); | |
148 | } | |
149 | ||
150 | function load($classlist, $kind, $owner_uid = false, $skip_init = false) { | |
151 | $plugins = explode(",", $classlist); | |
152 | ||
153 | $this->owner_uid = (int) $owner_uid; | |
154 | ||
155 | foreach ($plugins as $class) { | |
156 | $class = trim($class); | |
157 | $class_file = strtolower(basename($class)); | |
158 | ||
159 | if (!is_dir(__DIR__."/../plugins/$class_file") && | |
160 | !is_dir(__DIR__."/../plugins.local/$class_file")) continue; | |
161 | ||
162 | // try system plugin directory first | |
163 | $file = __DIR__ . "/../plugins/$class_file/init.php"; | |
164 | ||
165 | if (!file_exists($file)) { | |
166 | $file = __DIR__ . "/../plugins.local/$class_file/init.php"; | |
167 | } | |
168 | ||
169 | if (!isset($this->plugins[$class])) { | |
170 | if (file_exists($file)) require_once $file; | |
171 | ||
172 | if (class_exists($class) && is_subclass_of($class, "Plugin")) { | |
173 | $plugin = new $class($this); | |
174 | ||
175 | $plugin_api = $plugin->api_version(); | |
176 | ||
177 | if ($plugin_api < PluginHost::API_VERSION) { | |
178 | user_error("Plugin $class is not compatible with current API version (need: " . PluginHost::API_VERSION . ", got: $plugin_api)", E_USER_WARNING); | |
179 | continue; | |
180 | } | |
181 | ||
182 | $this->last_registered = $class; | |
183 | ||
184 | switch ($kind) { | |
185 | case $this::KIND_SYSTEM: | |
186 | if ($this->is_system($plugin)) { | |
187 | if (!$skip_init) $plugin->init($this); | |
188 | $this->register_plugin($class, $plugin); | |
189 | } | |
190 | break; | |
191 | case $this::KIND_USER: | |
192 | if (!$this->is_system($plugin)) { | |
193 | if (!$skip_init) $plugin->init($this); | |
194 | $this->register_plugin($class, $plugin); | |
195 | } | |
196 | break; | |
197 | case $this::KIND_ALL: | |
198 | if (!$skip_init) $plugin->init($this); | |
199 | $this->register_plugin($class, $plugin); | |
200 | break; | |
201 | } | |
202 | } | |
203 | } | |
204 | } | |
205 | } | |
206 | ||
207 | function is_system($plugin) { | |
208 | $about = $plugin->about(); | |
209 | ||
210 | return @$about[3]; | |
211 | } | |
212 | ||
213 | // only system plugins are allowed to modify routing | |
214 | function add_handler($handler, $method, $sender) { | |
215 | $handler = str_replace("-", "_", strtolower($handler)); | |
216 | $method = strtolower($method); | |
217 | ||
218 | if ($this->is_system($sender)) { | |
219 | if (!is_array($this->handlers[$handler])) { | |
220 | $this->handlers[$handler] = array(); | |
221 | } | |
222 | ||
223 | $this->handlers[$handler][$method] = $sender; | |
224 | } | |
225 | } | |
226 | ||
227 | function del_handler($handler, $method, $sender) { | |
228 | $handler = str_replace("-", "_", strtolower($handler)); | |
229 | $method = strtolower($method); | |
230 | ||
231 | if ($this->is_system($sender)) { | |
232 | unset($this->handlers[$handler][$method]); | |
233 | } | |
234 | } | |
235 | ||
236 | function lookup_handler($handler, $method) { | |
237 | $handler = str_replace("-", "_", strtolower($handler)); | |
238 | $method = strtolower($method); | |
239 | ||
240 | if (is_array($this->handlers[$handler])) { | |
241 | if (isset($this->handlers[$handler]["*"])) { | |
242 | return $this->handlers[$handler]["*"]; | |
243 | } else { | |
244 | return $this->handlers[$handler][$method]; | |
245 | } | |
246 | } | |
247 | ||
248 | return false; | |
249 | } | |
250 | ||
251 | function add_command($command, $description, $sender, $suffix = "", $arghelp = "") { | |
252 | $command = str_replace("-", "_", strtolower($command)); | |
253 | ||
254 | $this->commands[$command] = array("description" => $description, | |
255 | "suffix" => $suffix, | |
256 | "arghelp" => $arghelp, | |
257 | "class" => $sender); | |
258 | } | |
259 | ||
260 | function del_command($command) { | |
261 | $command = "-" . strtolower($command); | |
262 | ||
263 | unset($this->commands[$command]); | |
264 | } | |
265 | ||
266 | function lookup_command($command) { | |
267 | $command = "-" . strtolower($command); | |
268 | ||
269 | if (is_array($this->commands[$command])) { | |
270 | return $this->commands[$command]["class"]; | |
271 | } else { | |
272 | return false; | |
273 | } | |
274 | ||
275 | return false; | |
276 | } | |
277 | ||
278 | function get_commands() { | |
279 | return $this->commands; | |
280 | } | |
281 | ||
282 | function run_commands($args) { | |
283 | foreach ($this->get_commands() as $command => $data) { | |
284 | if (isset($args[$command])) { | |
285 | $command = str_replace("-", "", $command); | |
286 | $data["class"]->$command($args); | |
287 | } | |
288 | } | |
289 | } | |
290 | ||
291 | function load_data() { | |
292 | if ($this->owner_uid) { | |
293 | $result = $this->dbh->query("SELECT name, content FROM ttrss_plugin_storage | |
294 | WHERE owner_uid = '".$this->owner_uid."'"); | |
295 | ||
296 | while ($line = $this->dbh->fetch_assoc($result)) { | |
297 | $this->storage[$line["name"]] = unserialize($line["content"]); | |
298 | } | |
299 | } | |
300 | } | |
301 | ||
302 | private function save_data($plugin) { | |
303 | if ($this->owner_uid) { | |
304 | $plugin = $this->dbh->escape_string($plugin); | |
305 | ||
306 | $this->dbh->query("BEGIN"); | |
307 | ||
308 | $result = $this->dbh->query("SELECT id FROM ttrss_plugin_storage WHERE | |
309 | owner_uid= '".$this->owner_uid."' AND name = '$plugin'"); | |
310 | ||
311 | if (!isset($this->storage[$plugin])) | |
312 | $this->storage[$plugin] = array(); | |
313 | ||
314 | $content = $this->dbh->escape_string(serialize($this->storage[$plugin]), | |
315 | false); | |
316 | ||
317 | if ($this->dbh->num_rows($result) != 0) { | |
318 | $this->dbh->query("UPDATE ttrss_plugin_storage SET content = '$content' | |
319 | WHERE owner_uid= '".$this->owner_uid."' AND name = '$plugin'"); | |
320 | ||
321 | } else { | |
322 | $this->dbh->query("INSERT INTO ttrss_plugin_storage | |
323 | (name,owner_uid,content) VALUES | |
324 | ('$plugin','".$this->owner_uid."','$content')"); | |
325 | } | |
326 | ||
327 | $this->dbh->query("COMMIT"); | |
328 | } | |
329 | } | |
330 | ||
331 | function set($sender, $name, $value, $sync = true) { | |
332 | $idx = get_class($sender); | |
333 | ||
334 | if (!isset($this->storage[$idx])) | |
335 | $this->storage[$idx] = array(); | |
336 | ||
337 | $this->storage[$idx][$name] = $value; | |
338 | ||
339 | if ($sync) $this->save_data(get_class($sender)); | |
340 | } | |
341 | ||
342 | function get($sender, $name, $default_value = false) { | |
343 | $idx = get_class($sender); | |
344 | ||
345 | if (isset($this->storage[$idx][$name])) { | |
346 | return $this->storage[$idx][$name]; | |
347 | } else { | |
348 | return $default_value; | |
349 | } | |
350 | } | |
351 | ||
352 | function get_all($sender) { | |
353 | $idx = get_class($sender); | |
354 | ||
355 | return $this->storage[$idx]; | |
356 | } | |
357 | ||
358 | function clear_data($sender) { | |
359 | if ($this->owner_uid) { | |
360 | $idx = get_class($sender); | |
361 | ||
362 | unset($this->storage[$idx]); | |
363 | ||
364 | $this->dbh->query("DELETE FROM ttrss_plugin_storage WHERE name = '$idx' | |
365 | AND owner_uid = " . $this->owner_uid); | |
366 | } | |
367 | } | |
368 | ||
369 | function set_debug($debug) { | |
370 | $this->debug = $debug; | |
371 | } | |
372 | ||
373 | function get_debug() { | |
374 | return $this->debug; | |
375 | } | |
376 | ||
377 | // Plugin feed functions are *EXPERIMENTAL*! | |
378 | ||
379 | // cat_id: only -1 is supported (Special) | |
380 | function add_feed($cat_id, $title, $icon, $sender) { | |
381 | if (!$this->feeds[$cat_id]) $this->feeds[$cat_id] = array(); | |
382 | ||
383 | $id = count($this->feeds[$cat_id]); | |
384 | ||
385 | array_push($this->feeds[$cat_id], | |
386 | array('id' => $id, 'title' => $title, 'sender' => $sender, 'icon' => $icon)); | |
387 | ||
388 | return $id; | |
389 | } | |
390 | ||
391 | function get_feeds($cat_id) { | |
392 | return $this->feeds[$cat_id]; | |
393 | } | |
394 | ||
395 | // convert feed_id (e.g. -129) to pfeed_id first | |
396 | function get_feed_handler($pfeed_id) { | |
397 | foreach ($this->feeds as $cat) { | |
398 | foreach ($cat as $feed) { | |
399 | if ($feed['id'] == $pfeed_id) { | |
400 | return $feed['sender']; | |
401 | } | |
402 | } | |
403 | } | |
404 | } | |
405 | ||
406 | static function pfeed_to_feed_id($label) { | |
407 | return PLUGIN_FEED_BASE_INDEX - 1 - abs($label); | |
408 | } | |
409 | ||
410 | static function feed_to_pfeed_id($feed) { | |
411 | return PLUGIN_FEED_BASE_INDEX - 1 + abs($feed); | |
412 | } | |
413 | ||
414 | function add_api_method($name, $sender) { | |
415 | if ($this->is_system($sender)) { | |
416 | $this->api_methods[strtolower($name)] = $sender; | |
417 | } | |
418 | } | |
419 | ||
420 | function get_api_method($name) { | |
421 | return $this->api_methods[$name]; | |
422 | } | |
423 | ||
424 | function add_filter_action($sender, $action_name, $action_desc) { | |
425 | $sender_class = get_class($sender); | |
426 | ||
427 | if (!isset($this->plugin_actions[$sender_class])) | |
428 | $this->plugin_actions[$sender_class] = array(); | |
429 | ||
430 | array_push($this->plugin_actions[$sender_class], | |
431 | array("action" => $action_name, "description" => $action_desc, "sender" => $sender)); | |
432 | } | |
433 | ||
434 | function get_filter_actions() { | |
435 | return $this->plugin_actions; | |
436 | } | |
437 | } |