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393
ap23/web/doku/inc/Extension/PluginController.php
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393
ap23/web/doku/inc/Extension/PluginController.php
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<?php
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namespace dokuwiki\Extension;
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/**
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* Class to encapsulate access to dokuwiki plugins
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*
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* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
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* @author Christopher Smith <chris@jalakai.co.uk>
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*/
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class PluginController
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{
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/** @var array the types of plugins DokuWiki supports */
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const PLUGIN_TYPES = ['auth', 'admin', 'syntax', 'action', 'renderer', 'helper', 'remote', 'cli'];
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protected $listByType = [];
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/** @var array all installed plugins and their enabled state [plugin=>enabled] */
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protected $masterList = [];
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protected $pluginCascade = ['default' => [], 'local' => [], 'protected' => []];
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protected $lastLocalConfigFile = '';
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/**
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* Populates the master list of plugins
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*/
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public function __construct()
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{
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$this->loadConfig();
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$this->populateMasterList();
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}
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/**
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* Returns a list of available plugins of given type
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*
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* @param $type string, plugin_type name;
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* the type of plugin to return,
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* use empty string for all types
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* @param $all bool;
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* false to only return enabled plugins,
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* true to return both enabled and disabled plugins
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*
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* @return array of
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* - plugin names when $type = ''
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* - or plugin component names when a $type is given
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*
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* @author Andreas Gohr <andi@splitbrain.org>
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*/
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public function getList($type = '', $all = false)
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{
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// request the complete list
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if (!$type) {
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return $all ? array_keys($this->masterList) : array_keys(array_filter($this->masterList));
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}
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if (!isset($this->listByType[$type]['enabled'])) {
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$this->listByType[$type]['enabled'] = $this->getListByType($type, true);
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}
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if ($all && !isset($this->listByType[$type]['disabled'])) {
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$this->listByType[$type]['disabled'] = $this->getListByType($type, false);
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}
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return $all
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? array_merge($this->listByType[$type]['enabled'], $this->listByType[$type]['disabled'])
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: $this->listByType[$type]['enabled'];
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}
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/**
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* Loads the given plugin and creates an object of it
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*
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* @param $type string type of plugin to load
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* @param $name string name of the plugin to load
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* @param $new bool true to return a new instance of the plugin, false to use an already loaded instance
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* @param $disabled bool true to load even disabled plugins
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* @return PluginInterface|null the plugin object or null on failure
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* @author Andreas Gohr <andi@splitbrain.org>
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*
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*/
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public function load($type, $name, $new = false, $disabled = false)
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{
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//we keep all loaded plugins available in global scope for reuse
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global $DOKU_PLUGINS;
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list($plugin, /* $component */) = $this->splitName($name);
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// check if disabled
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if (!$disabled && !$this->isEnabled($plugin)) {
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return null;
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}
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$class = $type . '_plugin_' . $name;
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//plugin already loaded?
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if (!empty($DOKU_PLUGINS[$type][$name])) {
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if ($new || !$DOKU_PLUGINS[$type][$name]->isSingleton()) {
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return class_exists($class, true) ? new $class : null;
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}
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return $DOKU_PLUGINS[$type][$name];
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}
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//construct class and instantiate
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if (!class_exists($class, true)) {
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# the plugin might be in the wrong directory
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$inf = confToHash(DOKU_PLUGIN . "$plugin/plugin.info.txt");
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if ($inf['base'] && $inf['base'] != $plugin) {
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msg(
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sprintf(
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"Plugin installed incorrectly. Rename plugin directory '%s' to '%s'.",
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hsc($plugin),
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hsc(
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$inf['base']
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)
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), -1
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);
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} elseif (preg_match('/^' . DOKU_PLUGIN_NAME_REGEX . '$/', $plugin) !== 1) {
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msg(
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sprintf(
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"Plugin name '%s' is not a valid plugin name, only the characters a-z and 0-9 are allowed. " .
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'Maybe the plugin has been installed in the wrong directory?', hsc($plugin)
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), -1
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);
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}
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return null;
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}
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$DOKU_PLUGINS[$type][$name] = new $class;
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return $DOKU_PLUGINS[$type][$name];
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}
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/**
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* Whether plugin is disabled
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*
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* @param string $plugin name of plugin
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* @return bool true disabled, false enabled
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* @deprecated in favor of the more sensible isEnabled where the return value matches the enabled state
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*/
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public function isDisabled($plugin)
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{
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dbg_deprecated('isEnabled()');
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return !$this->isEnabled($plugin);
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}
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/**
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* Check whether plugin is disabled
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*
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* @param string $plugin name of plugin
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* @return bool true enabled, false disabled
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*/
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public function isEnabled($plugin)
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{
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return !empty($this->masterList[$plugin]);
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}
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/**
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* Disable the plugin
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*
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* @param string $plugin name of plugin
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* @return bool true saving succeed, false saving failed
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*/
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public function disable($plugin)
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{
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if (array_key_exists($plugin, $this->pluginCascade['protected'])) return false;
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$this->masterList[$plugin] = 0;
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return $this->saveList();
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}
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/**
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* Enable the plugin
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*
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* @param string $plugin name of plugin
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* @return bool true saving succeed, false saving failed
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*/
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public function enable($plugin)
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{
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if (array_key_exists($plugin, $this->pluginCascade['protected'])) return false;
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$this->masterList[$plugin] = 1;
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return $this->saveList();
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}
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/**
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* Returns cascade of the config files
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*
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* @return array with arrays of plugin configs
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*/
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public function getCascade()
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{
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return $this->pluginCascade;
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}
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/**
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* Read all installed plugins and their current enabled state
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*/
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protected function populateMasterList()
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{
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if ($dh = @opendir(DOKU_PLUGIN)) {
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$all_plugins = array();
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while (false !== ($plugin = readdir($dh))) {
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if ($plugin[0] === '.') continue; // skip hidden entries
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if (is_file(DOKU_PLUGIN . $plugin)) continue; // skip files, we're only interested in directories
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if (array_key_exists($plugin, $this->masterList) && $this->masterList[$plugin] == 0) {
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$all_plugins[$plugin] = 0;
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} elseif (array_key_exists($plugin, $this->masterList) && $this->masterList[$plugin] == 1) {
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$all_plugins[$plugin] = 1;
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} else {
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$all_plugins[$plugin] = 1;
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}
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}
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$this->masterList = $all_plugins;
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if (!file_exists($this->lastLocalConfigFile)) {
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$this->saveList(true);
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}
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}
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}
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/**
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* Includes the plugin config $files
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* and returns the entries of the $plugins array set in these files
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*
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* @param array $files list of files to include, latter overrides previous
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* @return array with entries of the $plugins arrays of the included files
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*/
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protected function checkRequire($files)
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{
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$plugins = array();
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foreach ($files as $file) {
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if (file_exists($file)) {
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include_once($file);
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}
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}
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return $plugins;
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}
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/**
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* Save the current list of plugins
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*
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* @param bool $forceSave ;
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* false to save only when config changed
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* true to always save
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* @return bool true saving succeed, false saving failed
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*/
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protected function saveList($forceSave = false)
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{
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global $conf;
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if (empty($this->masterList)) return false;
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// Rebuild list of local settings
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$local_plugins = $this->rebuildLocal();
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if ($local_plugins != $this->pluginCascade['local'] || $forceSave) {
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$file = $this->lastLocalConfigFile;
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$out = "<?php\n/*\n * Local plugin enable/disable settings\n" .
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" * Auto-generated through plugin/extension manager\n *\n" .
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" * NOTE: Plugins will not be added to this file unless there " .
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"is a need to override a default setting. Plugins are\n" .
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" * enabled by default.\n */\n";
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foreach ($local_plugins as $plugin => $value) {
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$out .= "\$plugins['$plugin'] = $value;\n";
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}
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// backup current file (remove any existing backup)
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if (file_exists($file)) {
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$backup = $file . '.bak';
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if (file_exists($backup)) @unlink($backup);
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if (!@copy($file, $backup)) return false;
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if (!empty($conf['fperm'])) chmod($backup, $conf['fperm']);
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}
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//check if can open for writing, else restore
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return io_saveFile($file, $out);
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}
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return false;
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}
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/**
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* Rebuild the set of local plugins
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*
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* @return array array of plugins to be saved in end($config_cascade['plugins']['local'])
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*/
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protected function rebuildLocal()
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{
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//assign to local variable to avoid overwriting
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$backup = $this->masterList;
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//Can't do anything about protected one so rule them out completely
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$local_default = array_diff_key($backup, $this->pluginCascade['protected']);
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//Diff between local+default and default
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//gives us the ones we need to check and save
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$diffed_ones = array_diff_key($local_default, $this->pluginCascade['default']);
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//The ones which we are sure of (list of 0s not in default)
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$sure_plugins = array_filter($diffed_ones, array($this, 'negate'));
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//the ones in need of diff
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$conflicts = array_diff_key($local_default, $diffed_ones);
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//The final list
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return array_merge($sure_plugins, array_diff_assoc($conflicts, $this->pluginCascade['default']));
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}
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/**
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* Build the list of plugins and cascade
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*
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*/
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protected function loadConfig()
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{
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global $config_cascade;
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foreach (array('default', 'protected') as $type) {
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if (array_key_exists($type, $config_cascade['plugins'])) {
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$this->pluginCascade[$type] = $this->checkRequire($config_cascade['plugins'][$type]);
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}
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}
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$local = $config_cascade['plugins']['local'];
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$this->lastLocalConfigFile = array_pop($local);
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$this->pluginCascade['local'] = $this->checkRequire(array($this->lastLocalConfigFile));
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if (is_array($local)) {
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$this->pluginCascade['default'] = array_merge(
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$this->pluginCascade['default'],
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$this->checkRequire($local)
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);
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}
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$this->masterList = array_merge(
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$this->pluginCascade['default'],
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$this->pluginCascade['local'],
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$this->pluginCascade['protected']
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);
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}
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/**
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* Returns a list of available plugin components of given type
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*
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* @param string $type plugin_type name; the type of plugin to return,
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* @param bool $enabled true to return enabled plugins,
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* false to return disabled plugins
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* @return array of plugin components of requested type
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*/
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protected function getListByType($type, $enabled)
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{
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$master_list = $enabled
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? array_keys(array_filter($this->masterList))
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: array_keys(array_filter($this->masterList, array($this, 'negate')));
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$plugins = array();
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foreach ($master_list as $plugin) {
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if (file_exists(DOKU_PLUGIN . "$plugin/$type.php")) {
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$plugins[] = $plugin;
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continue;
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}
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$typedir = DOKU_PLUGIN . "$plugin/$type/";
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if (is_dir($typedir)) {
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if ($dp = opendir($typedir)) {
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while (false !== ($component = readdir($dp))) {
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if (strpos($component, '.') === 0 || strtolower(substr($component, -4)) !== '.php') continue;
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if (is_file($typedir . $component)) {
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$plugins[] = $plugin . '_' . substr($component, 0, -4);
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}
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}
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closedir($dp);
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}
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}
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}//foreach
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return $plugins;
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}
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/**
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* Split name in a plugin name and a component name
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*
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* @param string $name
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* @return array with
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* - plugin name
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* - and component name when available, otherwise empty string
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*/
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protected function splitName($name)
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{
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if (!isset($this->masterList[$name])) {
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return explode('_', $name, 2);
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}
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return array($name, '');
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}
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/**
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* Returns inverse boolean value of the input
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*
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* @param mixed $input
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* @return bool inversed boolean value of input
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*/
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protected function negate($input)
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{
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return !(bool)$input;
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}
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}
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