3 * Nucleus: PHP/MySQL Weblog CMS (http://nucleuscms.org/)
4 * Copyright (C) 2002-2009 The Nucleus Group
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 * (see nucleus/documentation/index.html#license for more info)
13 * This is an (abstract) class of which all Nucleus Plugins must inherit
15 * for more information on plugins and how to write your own, see the
16 * plugins.html file that is included with the Nucleus documenation
18 * @license http://nucleuscms.org/license.txt GNU General Public License
19 * @copyright Copyright (C) 2002-2009 The Nucleus Group
21 * $NucleusJP: PLUGIN.php,v 1.12.2.3 2007/12/03 02:22:42 kmorimatsu Exp $
25 // these functions _have_ to be redefined in your plugin
27 function getName() { return 'Undefined'; }
28 function getAuthor() { return 'Undefined'; }
29 function getURL() { return 'Undefined'; }
30 function getVersion() { return '0.0'; }
31 function getDescription() { return 'Undefined';}
33 // these function _may_ be redefined in your plugin
35 function getMinNucleusVersion() { return 150; }
36 function getMinNucleusPatchLevel() { return 0; }
37 function getEventList() { return array(); }
38 function getTableList() { return array(); }
39 function hasAdminArea() { return 0; }
42 function unInstall() {}
46 function doSkinVar($skinType) {}
47 function doTemplateVar(&$item) {
48 $args = func_get_args();
50 array_unshift($args, 'template');
51 call_user_func_array(array(&$this,'doSkinVar'),$args);
53 function doTemplateCommentsVar(&$item, &$comment) {
54 $args = func_get_args();
57 array_unshift($args, 'template');
58 call_user_func_array(array(&$this,'doSkinVar'),$args);
60 function doAction($type) { return _ERROR_PLUGIN_NOSUCHACTION; }
61 function doIf($key,$value) { return false; }
62 function doItemVar () {}
65 * Checks if a plugin supports a certain feature.
67 * @returns 1 if the feature is reported, 0 if not
69 * Name of the feature. See plugin documentation for more info
70 * 'SqlTablePrefix' -> if the plugin uses the sql_table() method to get table names
71 * 'HelpPage' -> if the plugin provides a helppage
73 function supportsFeature($feature) {
78 * Report a list of plugin that is required to function
80 * @returns an array of names of plugin, an empty array indicates no dependency
82 function getPluginDep() { return array(); }
84 // these helper functions should not be redefined in your plugin
87 * Creates a new option for this plugin
90 * A string uniquely identifying your option. (max. length is 20 characters)
92 * A description that will show up in the nucleus admin area (max. length: 255 characters)
94 * Either 'text', 'yesno' or 'password'
95 * This info is used when showing 'edit plugin options' screens
97 * Initial value for the option (max. value length is 128 characters)
99 function createOption($name, $desc, $type, $defValue = '', $typeExtras = '') {
100 return $this->_createOption('global', $name, $desc, $type, $defValue, $typeExtras);
102 function createBlogOption($name, $desc, $type, $defValue = '', $typeExtras = '') {
103 return $this->_createOption('blog', $name, $desc, $type, $defValue, $typeExtras);
105 function createMemberOption($name, $desc, $type, $defValue = '', $typeExtras = '') {
106 return $this->_createOption('member', $name, $desc, $type, $defValue, $typeExtras);
108 function createCategoryOption($name, $desc, $type, $defValue = '', $typeExtras = '') {
109 return $this->_createOption('category', $name, $desc, $type, $defValue, $typeExtras);
111 function createItemOption($name, $desc, $type, $defValue = '', $typeExtras = '') {
112 return $this->_createOption('item', $name, $desc, $type, $defValue, $typeExtras);
116 * Removes the option from the database
118 * Note: Options get erased automatically on plugin uninstall
120 function deleteOption($name) {
121 return $this->_deleteOption('global', $name);
123 function deleteBlogOption($name) {
124 return $this->_deleteOption('blog', $name);
126 function deleteMemberOption($name) {
127 return $this->_deleteOption('member', $name);
129 function deleteCategoryOption($name) {
130 return $this->_deleteOption('category', $name);
132 function deleteItemOption($name) {
133 return $this->_deleteOption('item', $name);
137 * Sets the value of an option to something new
139 function setOption($name, $value) {
140 return $this->_setOption('global', 0, $name, $value);
142 function setBlogOption($blogid, $name, $value) {
143 return $this->_setOption('blog', $blogid, $name, $value);
145 function setMemberOption($memberid, $name, $value) {
146 return $this->_setOption('member', $memberid, $name, $value);
148 function setCategoryOption($catid, $name, $value) {
149 return $this->_setOption('category', $catid, $name, $value);
151 function setItemOption($itemid, $name, $value) {
152 return $this->_setOption('item', $itemid, $name, $value);
156 * Retrieves the current value for an option
158 function getOption($name)
160 // only request the options the very first time. On subsequent requests
161 // the static collection is used to save SQL queries.
162 if ($this->plugin_options == 0)
164 $this->plugin_options = array();
166 'SELECT d.oname as name, o.ovalue as value '.
168 sql_table('plugin_option').' o, '.
169 sql_table('plugin_option_desc').' d '.
170 'WHERE d.opid='. intval($this->getID()).' AND d.oid=o.oid'
172 while ($row = sql_fetch_object($query))
173 $this->plugin_options[strtolower($row->name)] = $row->value;
175 if (isset($this->plugin_options[strtolower($name)]))
176 return $this->plugin_options[strtolower($name)];
178 return $this->_getOption('global', 0, $name);
181 function getBlogOption($blogid, $name) {
182 return $this->_getOption('blog', $blogid, $name);
184 function getMemberOption($memberid, $name) {
185 return $this->_getOption('member', $memberid, $name);
187 function getCategoryOption($catid, $name) {
188 return $this->_getOption('category', $catid, $name);
190 function getItemOption($itemid, $name) {
191 return $this->_getOption('item', $itemid, $name);
195 * Retrieves an associative array with the option value for each
198 function getAllBlogOptions($name) {
199 return $this->_getAllOptions('blog', $name);
201 function getAllMemberOptions($name) {
202 return $this->_getAllOptions('member', $name);
204 function getAllCategoryOptions($name) {
205 return $this->_getAllOptions('category', $name);
207 function getAllItemOptions($name) {
208 return $this->_getAllOptions('item', $name);
212 * Retrieves an indexed array with the top (or bottom) of an option
213 * (delegates to _getOptionTop())
215 function getBlogOptionTop($name, $amount = 10, $sort = 'desc') {
216 return $this->_getOptionTop('blog', $name, $amount, $sort);
218 function getMemberOptionTop($name, $amount = 10, $sort = 'desc') {
219 return $this->_getOptionTop('member', $name, $amount, $sort);
221 function getCategoryOptionTop($name, $amount = 10, $sort = 'desc') {
222 return $this->_getOptionTop('category', $name, $amount, $sort);
224 function getItemOptionTop($name, $amount = 10, $sort = 'desc') {
225 return $this->_getOptionTop('item', $name, $amount, $sort);
229 * Returns the plugin ID
234 return $this->plugid;
238 * Returns the URL of the admin area for this plugin (in case there's
239 * no such area, the returned information is invalid)
243 function getAdminURL() {
245 return $CONF['PluginURL'] . $this->getShortName() . '/';
249 * Returns the directory where the admin directory is located and
250 * where the plugin can maintain his extra files
254 function getDirectory() {
256 return $DIR_PLUGINS . $this->getShortName() . '/';
260 * Derives the short name for the plugin from the classname (all
265 function getShortName() {
266 return str_replace('np_','',strtolower(get_class($this)));
270 * Clears the option value cache which saves the option values during
271 * the plugin execution. This function is usefull if the options has
272 * changed during the plugin execution (especially in association with
273 * the PrePluginOptionsUpdate and the PostPluginOptionsUpdate events)
277 function clearOptionValueCache(){
278 $this->_aOptionValues = array();
279 $this->plugin_options = 0;
282 // internal functions of the class starts here
284 var $_aOptionValues; // oid_contextid => value
285 var $_aOptionToInfo; // context_name => array('oid' => ..., 'default' => ...)
286 var $plugin_options; // see getOption()
287 var $plugid; // plugin id
291 * Class constructor: Initializes some internal data
293 function NucleusPlugin() {
294 $this->_aOptionValues = array(); // oid_contextid => value
295 $this->_aOptionToInfo = array(); // context_name => array('oid' => ..., 'default' => ...)
296 $this->plugin_options = 0;
300 * Retrieves an array of the top (or bottom) of an option from a plugin.
302 * @param string $context the context for the option: item, blog, member,...
303 * @param string $name the name of the option
304 * @param int $amount how many rows must be returned
305 * @param string $sort desc or asc
306 * @return array array with both values and contextid's
309 function _getOptionTop($context, $name, $amount = 10, $sort = 'desc') {
310 if (($sort != 'desc') && ($sort != 'asc')) {
314 $oid = $this->_getOID($context, $name);
316 // retrieve the data and return
317 $q = 'SELECT otype, oextra FROM '.sql_table('plugin_option_desc').' WHERE oid = '.$oid;
318 $query = sql_query($q);
320 $o = sql_fetch_array($query);
322 if (($this->optionCanBeNumeric($o['otype'])) && ($o['oextra'] == 'number' )) {
323 $orderby = 'CAST(ovalue AS SIGNED)';
327 $q = 'SELECT ovalue value, ocontextid id FROM '.sql_table('plugin_option').' WHERE oid = '.$oid.' ORDER BY '.$orderby.' '.$sort.' LIMIT 0,'.intval($amount);
328 $query = sql_query($q);
333 while($row = sql_fetch_array($query)) {
337 // return the array (duh!)
342 * Creates an option in the database table plugin_option_desc
346 function _createOption($context, $name, $desc, $type, $defValue, $typeExtras = '') {
347 // create in plugin_option_desc
348 $query = 'INSERT INTO ' . sql_table('plugin_option_desc')
349 .' (opid, oname, ocontext, odesc, otype, odef, oextra)'
350 .' VALUES ('.intval($this->plugid)
351 .', \''.addslashes($name).'\''
352 .', \''.addslashes($context).'\''
353 .', \''.addslashes($desc).'\''
354 .', \''.addslashes($type).'\''
355 .', \''.addslashes($defValue).'\''
356 .', \''.addslashes($typeExtras).'\')';
358 $oid = sql_insert_id();
360 $key = $context . '_' . $name;
361 $this->_aOptionToInfo[$key] = array('oid' => $oid, 'default' => $defValue);
367 * Deletes an option from the database tables
368 * plugin_option and plugin_option_desc
372 function _deleteOption($context, $name) {
373 $oid = $this->_getOID($context, $name);
374 if (!$oid) return 0; // no such option
376 // delete all things from plugin_option
377 sql_query('DELETE FROM ' . sql_table('plugin_option') . ' WHERE oid=' . $oid);
379 // delete entry from plugin_option_desc
380 sql_query('DELETE FROM ' . sql_table('plugin_option_desc') . ' WHERE oid=' . $oid);
383 unset($this->_aOptionToInfo[$context . '_' . $name]);
384 $this->_aOptionValues = array();
389 * Update an option in the database table plugin_option
391 * returns: 1 on success, 0 on failure
394 function _setOption($context, $contextid, $name, $value) {
397 $oid = $this->_getOID($context, $name);
400 // check if context id exists
403 if (!MEMBER::existsID($contextid)) return 0;
406 if (!$manager->existsBlogID($contextid)) return 0;
409 if (!$manager->existsCategory($contextid)) return 0;
412 if (!$manager->existsItem($contextid, true, true)) return 0;
415 if ($contextid != 0) return 0;
420 // update plugin_option
421 sql_query('DELETE FROM ' . sql_table('plugin_option') . ' WHERE oid='.intval($oid) . ' and ocontextid='. intval($contextid));
422 sql_query('INSERT INTO ' . sql_table('plugin_option') . ' (ovalue, oid, ocontextid) VALUES (\''.addslashes($value).'\', '. intval($oid) . ', ' . intval($contextid) . ')');
425 $this->_aOptionValues[$oid . '_' . $contextid] = $value;
431 * Get an option from Cache or database
432 * - if not in the option Cache read it from the database
433 * - if not in the database write default values into the database
437 function _getOption($context, $contextid, $name) {
438 $oid = $this->_getOID($context, $name);
439 if (!$oid) return '';
442 $key = $oid . '_' . $contextid;
444 if (isset($this->_aOptionValues[$key]))
445 return $this->_aOptionValues[$key];
448 $res = sql_query('SELECT ovalue FROM ' . sql_table('plugin_option') . ' WHERE oid='.intval($oid).' and ocontextid=' . intval($contextid));
450 if (!$res || (sql_num_rows($res) == 0)) {
451 $defVal = $this->_getDefVal($context, $name);
452 $this->_aOptionValues[$key] = $defVal;
454 // fill DB with default value
455 $query = 'INSERT INTO ' . sql_table('plugin_option') . ' (oid,ocontextid,ovalue)'
456 .' VALUES ('.intval($oid).', '.intval($contextid).', \''.addslashes($defVal).'\')';
460 $o = sql_fetch_object($res);
461 $this->_aOptionValues[$key] = $o->ovalue;
464 return $this->_aOptionValues[$key];
468 * Returns assoc array with all values for a given option
469 * (one option per possible context id)
473 function _getAllOptions($context, $name) {
474 $oid = $this->_getOID($context, $name);
475 if (!$oid) return array();
476 $defVal = $this->_getDefVal($context, $name);
481 $r = sql_query('SELECT bnumber as contextid FROM ' . sql_table('blog'));
484 $r = sql_query('SELECT catid as contextid FROM ' . sql_table('category'));
487 $r = sql_query('SELECT mnumber as contextid FROM ' . sql_table('member'));
490 $r = sql_query('SELECT inumber as contextid FROM ' . sql_table('item'));
494 while ($o = sql_fetch_object($r))
495 $aOptions[$o->contextid] = $defVal;
498 $res = sql_query('SELECT ocontextid, ovalue FROM ' . sql_table('plugin_option') . ' WHERE oid=' . $oid);
499 while ($o = sql_fetch_object($res))
500 $aOptions[$o->ocontextid] = $o->ovalue;
506 * Gets the 'option identifier' that corresponds to a given option name.
507 * When this method is called for the first time, all the OIDs for the plugin
508 * are loaded into memory, to avoid re-doing the same query all over.
510 function _getOID($context, $name) {
511 $key = $context . '_' . $name;
512 $info = @$this->_aOptionToInfo[$key];
513 if (is_array($info)) return $info['oid'];
515 // load all OIDs for this plugin from the database
516 $this->_aOptionToInfo = array();
517 $query = 'SELECT oid, oname, ocontext, odef FROM ' . sql_table('plugin_option_desc') . ' WHERE opid=' . intval($this->plugid);
518 $res = sql_query($query);
519 while ($o = sql_fetch_object($res)) {
520 $k = $o->ocontext . '_' . $o->oname;
521 $this->_aOptionToInfo[$k] = array('oid' => $o->oid, 'default' => $o->odef);
523 sql_free_result($res);
525 return @$this->_aOptionToInfo[$key]['oid'];
527 function _getDefVal($context, $name) {
528 $key = $context . '_' . $name;
529 $info = $this->_aOptionToInfo[$key];
530 if (is_array($info)) return $info['default'];
535 * Deletes all option values for a given context and contextid
536 * (used when e.g. a blog, member or category is deleted)
540 function _deleteOptionValues($context, $contextid) {
541 // delete all associated plugin options
544 $query = 'SELECT oid FROM '.sql_table('plugin_option_desc') . ' WHERE ocontext=\''.addslashes($context).'\'';
545 $res = sql_query($query);
546 while ($o = sql_fetch_object($res))
547 array_push($aOIDs, $o->oid);
548 sql_free_result($res);
549 // delete those options. go go go
550 if (count($aOIDs) > 0) {
551 $query = 'DELETE FROM ' . sql_table('plugin_option') . ' WHERE oid in ('.implode(',',$aOIDs).') and ocontextid=' . intval($contextid);
557 * splits the option's typeextra field (at ;'s) to split the meta collection
558 * @param string $typeExtra the value of the typeExtra field of an option
559 * @return array array of the meta-key/value-pairs
563 function getOptionMeta($typeExtra) {
564 $tmpMeta = explode(';', $typeExtra);
566 for ($i = 0; $i < count($tmpMeta); $i++) {
567 if (($i == 0) && (!strstr($tmpMeta[0], '='))) {
568 // we have the select-list
569 $meta['select'] = $tmpMeta[0];
571 $tmp = explode('=', $tmpMeta[$i]);
572 $meta[$tmp[0]] = $tmp[1];
579 * filters the selectlists out of the meta collection
580 * @param string $typeExtra the value of the typeExtra field of an option
581 * @return string the selectlist
584 function getOptionSelectValues($typeExtra) {
585 $meta = NucleusPlugin::getOptionMeta($typeExtra);
586 //the select list must always be the first part
587 return $meta['select'];
591 * checks if the eventlist in the database is up-to-date
592 * @return bool if it is up-to-date it return true, else false
595 function subscribtionListIsUptodate() {
596 $res = sql_query('SELECT event FROM '.sql_table('plugin_event').' WHERE pid = '.$this->getID());
598 while($a = sql_fetch_array($res)) {
599 array_push($ev, $a['event']);
601 if (count($ev) != count($this->getEventList())) {
604 $d = array_diff($ev, $this->getEventList());
606 // there are differences so the db is not up-to-date
613 * @param $aOptions: array ( 'oid' => array( 'contextid' => 'value'))
614 * (taken from request using requestVar())
615 * @param $newContextid: integer (accepts a contextid when it is for a new
616 * contextid there was no id available at the moment of writing the
617 * formcontrols into the page (by ex: itemOptions for new item)
620 function _applyPluginOptions(&$aOptions, $newContextid = 0) {
622 if (!is_array($aOptions)) return;
624 foreach ($aOptions as $oid => $values) {
626 // get option type info
627 $query = 'SELECT opid, oname, ocontext, otype, oextra, odef FROM ' . sql_table('plugin_option_desc') . ' WHERE oid=' . intval($oid);
628 $res = sql_query($query);
629 if ($o = sql_fetch_object($res))
631 foreach ($values as $key => $value) {
632 // avoid overriding the key used by foreach statement
635 // retreive any metadata
636 $meta = NucleusPlugin::getOptionMeta($o->oextra);
638 // if the option is readonly or hidden it may not be saved
639 if ((@$meta['access'] != 'readonly') && (@$meta['access'] != 'hidden')) {
641 $value = undoMagic($value); // value comes from request
645 if (($value != 'yes') && ($value != 'no')) $value = 'no';
651 // check the validity of numerical options
652 if ((@$meta['datatype'] == 'numerical') && (!is_numeric($value))) {
653 //the option must be numeric, but the it isn't
654 //use the default for this option
658 // decide wether we are using the contextid of newContextid
659 if ($newContextid != 0) {
660 $contextid = $newContextid;
663 //trigger event PrePluginOptionsUpdate to give the plugin the
664 //possibility to change/validate the new value for the option
665 $manager->notify('PrePluginOptionsUpdate',array('context' => $o->ocontext, 'plugid' => $o->opid, 'optionname' => $o->oname, 'contextid' => $contextid, 'value' => &$value));
667 // delete the old value for the option
668 sql_query('DELETE FROM '.sql_table('plugin_option').' WHERE oid='.intval($oid).' AND ocontextid='.intval($contextid));
669 sql_query('INSERT INTO '.sql_table('plugin_option')." (oid, ocontextid, ovalue) VALUES (".intval($oid).",".intval($contextid).",'" . addslashes($value) . "')");
673 // clear option value cache if the plugin object is already loaded
675 $plugin=& $manager->pidLoaded($o->opid);
676 if ($plugin) $plugin->clearOptionValueCache();