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