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6fc14d53 | 1 | <?php |
e1850388 V |
2 | namespace Shaarli\Plugin; |
3 | ||
4 | use Shaarli\Config\ConfigManager; | |
5 | use Shaarli\Plugin\Exception\PluginFileNotFoundException; | |
6fc14d53 A |
6 | |
7 | /** | |
8 | * Class PluginManager | |
9 | * | |
10 | * Use to manage, load and execute plugins. | |
6fc14d53 A |
11 | */ |
12 | class PluginManager | |
13 | { | |
6fc14d53 A |
14 | /** |
15 | * List of authorized plugins from configuration file. | |
e1850388 | 16 | * |
6fc14d53 A |
17 | * @var array $authorizedPlugins |
18 | */ | |
1b8620b1 | 19 | private $authorizedPlugins = []; |
6fc14d53 A |
20 | |
21 | /** | |
22 | * List of loaded plugins. | |
e1850388 | 23 | * |
6fc14d53 A |
24 | * @var array $loadedPlugins |
25 | */ | |
26 | private $loadedPlugins = array(); | |
27 | ||
51def0d8 A |
28 | /** |
29 | * @var ConfigManager Configuration Manager instance. | |
30 | */ | |
31 | protected $conf; | |
32 | ||
7fde6de1 A |
33 | /** |
34 | * @var array List of plugin errors. | |
35 | */ | |
36 | protected $errors; | |
37 | ||
6fc14d53 A |
38 | /** |
39 | * Plugins subdirectory. | |
e1850388 | 40 | * |
6fc14d53 A |
41 | * @var string $PLUGINS_PATH |
42 | */ | |
43 | public static $PLUGINS_PATH = 'plugins'; | |
44 | ||
dea0ba28 A |
45 | /** |
46 | * Plugins meta files extension. | |
e1850388 | 47 | * |
dea0ba28 A |
48 | * @var string $META_EXT |
49 | */ | |
50 | public static $META_EXT = 'meta'; | |
51 | ||
6fc14d53 | 52 | /** |
51def0d8 | 53 | * Constructor. |
6fc14d53 | 54 | * |
51def0d8 | 55 | * @param ConfigManager $conf Configuration Manager instance. |
6fc14d53 | 56 | */ |
51def0d8 | 57 | public function __construct(&$conf) |
6fc14d53 | 58 | { |
51def0d8 | 59 | $this->conf = $conf; |
7fde6de1 | 60 | $this->errors = array(); |
6fc14d53 A |
61 | } |
62 | ||
63 | /** | |
64 | * Load plugins listed in $authorizedPlugins. | |
65 | * | |
66 | * @param array $authorizedPlugins Names of plugin authorized to be loaded. | |
67 | * | |
68 | * @return void | |
69 | */ | |
70 | public function load($authorizedPlugins) | |
71 | { | |
72 | $this->authorizedPlugins = $authorizedPlugins; | |
73 | ||
74 | $dirs = glob(self::$PLUGINS_PATH . '/*', GLOB_ONLYDIR); | |
75 | $dirnames = array_map('basename', $dirs); | |
76 | foreach ($this->authorizedPlugins as $plugin) { | |
77 | $index = array_search($plugin, $dirnames); | |
78 | ||
79 | // plugin authorized, but its folder isn't listed | |
80 | if ($index === false) { | |
81 | continue; | |
82 | } | |
83 | ||
84 | try { | |
85 | $this->loadPlugin($dirs[$index], $plugin); | |
f211e417 | 86 | } catch (PluginFileNotFoundException $e) { |
6fc14d53 A |
87 | error_log($e->getMessage()); |
88 | } | |
89 | } | |
90 | } | |
91 | ||
92 | /** | |
93 | * Execute all plugins registered hook. | |
94 | * | |
e1850388 V |
95 | * @param string $hook name of the hook to trigger. |
96 | * @param array $data list of data to manipulate passed by reference. | |
97 | * @param array $params additional parameters such as page target. | |
567967fd | 98 | * |
6fc14d53 A |
99 | * @return void |
100 | */ | |
101 | public function executeHooks($hook, &$data, $params = array()) | |
102 | { | |
103 | if (!empty($params['target'])) { | |
104 | $data['_PAGE_'] = $params['target']; | |
105 | } | |
106 | ||
107 | if (isset($params['loggedin'])) { | |
108 | $data['_LOGGEDIN_'] = $params['loggedin']; | |
109 | } | |
110 | ||
9fbc4229 A |
111 | if (isset($params['basePath'])) { |
112 | $data['_BASE_PATH_'] = $params['basePath']; | |
113 | } | |
114 | ||
6fc14d53 A |
115 | foreach ($this->loadedPlugins as $plugin) { |
116 | $hookFunction = $this->buildHookName($hook, $plugin); | |
117 | ||
118 | if (function_exists($hookFunction)) { | |
7e3dc0ba A |
119 | try { |
120 | $data = call_user_func($hookFunction, $data, $this->conf); | |
121 | } catch (\Throwable $e) { | |
122 | $error = $plugin . t(' [plugin incompatibility]: ') . $e->getMessage(); | |
123 | $this->errors = array_unique(array_merge($this->errors, [$error])); | |
124 | } | |
6fc14d53 A |
125 | } |
126 | } | |
127 | } | |
128 | ||
129 | /** | |
130 | * Load a single plugin from its files. | |
7fde6de1 | 131 | * Call the init function if it exists, and collect errors. |
6fc14d53 A |
132 | * Add them in $loadedPlugins if successful. |
133 | * | |
134 | * @param string $dir plugin's directory. | |
135 | * @param string $pluginName plugin's name. | |
136 | * | |
137 | * @return void | |
e1850388 | 138 | * @throws \Shaarli\Plugin\Exception\PluginFileNotFoundException - plugin files not found. |
6fc14d53 A |
139 | */ |
140 | private function loadPlugin($dir, $pluginName) | |
141 | { | |
142 | if (!is_dir($dir)) { | |
143 | throw new PluginFileNotFoundException($pluginName); | |
144 | } | |
145 | ||
146 | $pluginFilePath = $dir . '/' . $pluginName . '.php'; | |
147 | if (!is_file($pluginFilePath)) { | |
148 | throw new PluginFileNotFoundException($pluginName); | |
149 | } | |
150 | ||
51def0d8 | 151 | $conf = $this->conf; |
6fc14d53 A |
152 | include_once $pluginFilePath; |
153 | ||
7fde6de1 A |
154 | $initFunction = $pluginName . '_init'; |
155 | if (function_exists($initFunction)) { | |
156 | $errors = call_user_func($initFunction, $this->conf); | |
157 | if (!empty($errors)) { | |
158 | $this->errors = array_merge($this->errors, $errors); | |
159 | } | |
160 | } | |
161 | ||
6fc14d53 A |
162 | $this->loadedPlugins[] = $pluginName; |
163 | } | |
164 | ||
165 | /** | |
166 | * Construct normalize hook name for a specific plugin. | |
167 | * | |
168 | * Format: | |
169 | * hook_<plugin_name>_<hook_name> | |
170 | * | |
171 | * @param string $hook hook name. | |
172 | * @param string $pluginName plugin name. | |
173 | * | |
174 | * @return string - plugin's hook name. | |
175 | */ | |
176 | public function buildHookName($hook, $pluginName) | |
177 | { | |
178 | return 'hook_' . $pluginName . '_' . $hook; | |
179 | } | |
dea0ba28 A |
180 | |
181 | /** | |
182 | * Retrieve plugins metadata from *.meta (INI) files into an array. | |
183 | * Metadata contains: | |
184 | * - plugin description [description] | |
185 | * - parameters split with ';' [parameters] | |
186 | * | |
187 | * Respects plugins order from settings. | |
188 | * | |
189 | * @return array plugins metadata. | |
190 | */ | |
191 | public function getPluginsMeta() | |
192 | { | |
193 | $metaData = array(); | |
194 | $dirs = glob(self::$PLUGINS_PATH . '/*', GLOB_ONLYDIR | GLOB_MARK); | |
195 | ||
196 | // Browse all plugin directories. | |
197 | foreach ($dirs as $pluginDir) { | |
198 | $plugin = basename($pluginDir); | |
199 | $metaFile = $pluginDir . $plugin . '.' . self::$META_EXT; | |
200 | if (!is_file($metaFile) || !is_readable($metaFile)) { | |
201 | continue; | |
202 | } | |
203 | ||
204 | $metaData[$plugin] = parse_ini_file($metaFile); | |
205 | $metaData[$plugin]['order'] = array_search($plugin, $this->authorizedPlugins); | |
206 | ||
12266213 A |
207 | if (isset($metaData[$plugin]['description'])) { |
208 | $metaData[$plugin]['description'] = t($metaData[$plugin]['description']); | |
209 | } | |
dea0ba28 A |
210 | // Read parameters and format them into an array. |
211 | if (isset($metaData[$plugin]['parameters'])) { | |
212 | $params = explode(';', $metaData[$plugin]['parameters']); | |
213 | } else { | |
214 | $params = array(); | |
215 | } | |
216 | $metaData[$plugin]['parameters'] = array(); | |
217 | foreach ($params as $param) { | |
218 | if (empty($param)) { | |
219 | continue; | |
220 | } | |
221 | ||
15170b51 A |
222 | $metaData[$plugin]['parameters'][$param]['value'] = ''; |
223 | // Optional parameter description in parameter.PARAM_NAME= | |
e1850388 V |
224 | if (isset($metaData[$plugin]['parameter.' . $param])) { |
225 | $metaData[$plugin]['parameters'][$param]['desc'] = t($metaData[$plugin]['parameter.' . $param]); | |
15170b51 | 226 | } |
dea0ba28 A |
227 | } |
228 | } | |
229 | ||
230 | return $metaData; | |
231 | } | |
7fde6de1 A |
232 | |
233 | /** | |
234 | * Return the list of encountered errors. | |
235 | * | |
236 | * @return array List of errors (empty array if none exists). | |
237 | */ | |
238 | public function getErrors() | |
239 | { | |
240 | return $this->errors; | |
241 | } | |
6fc14d53 | 242 | } |