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<?php/* Reminder: always indent with 4 spaces (no tabs). */// +---------------------------------------------------------------------------+// | Geeklog 1.3 |// +---------------------------------------------------------------------------+// | lib-plugins.php |// | This file implements plugin support in Geeklog. |// | |// +---------------------------------------------------------------------------+// | Copyright (C) 2000,2001 by the following authors: |// | |// | Authors: Tony Bibbs - tony@tonybibbs.com |// +---------------------------------------------------------------------------+// | |// | This program is free software; you can redistribute it and/or |// | modify it under the terms of the GNU General Public License |// | as published by the Free Software Foundation; either version 2 |// | of the License, or (at your option) any later version. |// | |// | This program is distributed in the hope that it will be useful, |// | but WITHOUT ANY WARRANTY; without even the implied warranty of |// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |// | GNU General Public License for more details. |// | |// | You should have received a copy of the GNU General Public License |// | along with this program; if not, write to the Free Software Foundation, |// | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |// | |// +---------------------------------------------------------------------------+//// $Id: lib-plugins.php,v 1.22 2003/07/25 10:44:39 dhaun Exp $/*** This is the plugin library for Geeklog. This is the API that plugins can* implement to get tight intergration with Geeklog.* See each function for more details.**/require_once($_CONF['path_system'] . 'classes/plugin.class.php');// buffer for function names for the center block API$PLG_bufferCenterAPI = array ();$PLG_buffered = false;/*** Calls a function for all enabled plugins** @param string $function_name holds name of function to call**/function PLG_callFunctionForAllPlugins($function_name) { global $_TABLES; $result = DB_query("SELECT pi_name FROM {$_TABLES['plugins']} WHERE pi_enabled = 1"); $nrows = DB_numRows($result); for ($i = 1; $i <= $nrows; $i++) { $A = DB_fetchArray($result); $function = $function_name . $A['pi_name']; if (function_exists($function)) { $function(); } }}/*** Calls a function for a single plugin** This is a generic function used by some of the other API functions to* call a function for a specific plugin and, optionally pass parameters.* This function can handle up to 5 arguments and if more exist it will* try to pass the entire args array to the function.** @param string $function holds name of function to call* @param array $args arguments to send to function* @return mixed returns result of function call, otherwise false**/function PLG_callFunctionForOnePlugin($function, $args='') { if (function_exists($function)) { // great, function exists, run it switch (count($args)) { case 0: return $function(); break; case 1: return $function($args[1]); break; case 2: return $function($args[1], $args[2]); break; case 3: return $function($args[1], $args[2], $args[3]); break; case 4: return $function($args[1], $args[2], $args[3], $args[4]); break; case 5: return $function($args[1], $args[2], $args[3], $args[4], $args[5]); break; default: return $function($args); break; } } else { return false; }}/*** Tells a plugin to install itself. NOTE: not currently used anymore** @param string $type Plugin name* @return boolean Returns true on success otherwise false**/function PLG_install($type){ return PLG_callFunctionForOnePlugin('plugin_install_' . $type);}/*** Upgrades a plugin. Tells a plugin to upgrade itself. NOTE: not currently used** @param string $type Plugin name* @return boolean Returns true on success otherwise false**/function PLG_upgrade($type){ return PLG_callFunctionForOnePlugin('plugin_upgrade_' . $type);}/*** Tells a plugin to uninstall itself.** @param string $type Plugin to uninstall* @return boolean Returns true on success otherwise false**/function PLG_uninstall($type){ if (empty($type)) return false; $retval = PLG_callFunctionForOnePlugin('plugin_uninstall_' . $type); if (empty($retval)) { return false; } else { return $retval; }}/*** Checks to see if user is a plugin moderator** Geeklog is asking if the user is a moderator for any installed plugins.** @return boolean True if current user is moderator of plugin otherwise false**/function PLG_isModerator() { return PLG_callFunctionForAllPlugins('plugin_ismoderator_');}/*** Gives plugins a chance to print their menu items in header** Note that this is fairly unflexible. This simply loops through the plugins* in the database in the order they were installed and get their menu items.* If you want more flexibility in your menu then you should hard code the menu* items in header.thtml for the theme(s) you are using.** @return array Returns menu options for plugin**/function PLG_getMenuItems() { global $_TABLES; $result = DB_query("SELECT pi_name FROM {$_TABLES['plugins']} WHERE pi_enabled = 1"); $nrows = DB_numRows($result); $menu = array(); for ($i = 1; $i <= $nrows; $i++) { $A = DB_fetchArray($result); $function = 'plugin_getmenuitems_' . $A['pi_name']; if (function_exists($function)) { $menuitems = $function(); $menu = array_merge($menu,$menuitems); } } return $menu;}/*** Returns if a specific plugin supports user comments** @param string $type Plugin to check comment support for* @return boolean True if plugin uses comments otherwise false**/function PLG_supportsComments($type) { return PLG_callFunctionForOnePlugin('plugin_commentsupport_' . $type);}/*** Plugin should perform an operation on one of its comments.** @param string $type Plugin to have handle the comment* @param string $id Comment ID* @param string $operation "save" or "delete"* @return string COM_refresh() string to redirect to the proper URL*/function PLG_handlePluginComment ($type, $id, $operation='') { $args[1] = $id; $args[2] = $operation; return PLG_callFunctionForOnePlugin('plugin_handlecomment_' . $type, $args);}/*** User has requested to create a comment for the plugin* Redirects user to comment form if initial comment for plugin record or returns* formated HTML including the Site footer and the comments ** @param string $type Plugin to have handle the comment* @param int $id GL Comment table primary key. * @param string $mode Has user selected a new comment preview mode (Flat, Nested, Threaded, None)* @param string $order Has the user selected a different comment first (Newest or Oldest comment first)* @param string $reply Has the user used the reply button on the Comment Bar * @return string Formated HTML containing site footer and the comments with the comment command bar * or redirect user to create top level comment*/function PLG_callCommentForm($type,$id,$mode="",$order="",$reply=""){ $args[1] = $id; $args[2] = $mode; $args[3] = $order; $args[4] = $reply; return PLG_callFunctionForOnePlugin('plugin_commentform_' . $type, $args);}/*** The way this function works is very specific to how Geeklog shows it's* statistics. On stats.php, there is the top box which gives overall* statistics for Geeklog and then there are blocks below it that give* more specific statistics for various components of Geeklog. If * $showsitestats is 1 then the plugins is to return the overall stats* for the plugin. If $showsitestats is 0 then it will return the plugin* specific stats** @param boolean $showsitestats flag indicated type of stats to return **/function PLG_getPluginStats($showsitestats) { global $_TABLES; $retval = ''; $result = DB_query("SELECT pi_name FROM {$_TABLES['plugins']} WHERE pi_enabled = 1"); $nrows = DB_numRows($result); for ($i = 1; $i <= $nrows; $i++) { $A = DB_fetchArray($result); $function = 'plugin_showstats_' . $A['pi_name']; if (function_exists($function)) { //great, stats function is there, call it $retval .= $function($showsitestats); } // no else because this is not a required API function } return $retval;}/*** This function gives each plugin the opportunity to put a value(s) in* the 'Type' drop down box on the search.php page so that their plugin* can be incorporated into searches.** @return array String array of search types for plugin(s)**/function PLG_getSearchTypes() { global $_TABLES; $types = array(); $cur_types = array(); $result = DB_query("SELECT pi_name FROM {$_TABLES['plugins']} WHERE pi_enabled = 1"); $nrows = DB_numRows($result); for ($i = 1; $i <= $nrows; $i++) { $A = DB_fetchArray($result); $function = 'plugin_searchtypes_' . $A['pi_name']; if (function_exists($function)) { //great, stats function is there, call it $cur_types = $function(); $types = array_merge($types, $cur_types); } // no else because this is not a required API function } return $types;}/*** Determines if s specific plugin supports Geeklog's* expanded search results feature** @author Tony Bibbs <tony AT geeklog DOT net>* @access public* @param string $type Plugin name* @return boolean True if it is supported, otherwise false**/function PLG_supportsExpandedSearch($type){ $retval = ''; $function = 'plugin_supportsexpandedsearch_' . $type; if (function_exists($function)) { $retval = $function(); } if (empty($retval) OR !is_bool($retval)) { $retval = false; } return $retval;}/*** This function gives each plugin the opportunity to do their search* and return their results. Results comeback in an array of HTML * formatted table rows that can be quickly printed by search.php ** @param string $query What the user searched for* @param date $datestart beginning of date range to search for* @param date $dateend ending date range to search for* @param string $topic the topic the user searched within * @param int $author UID...only return results for this person* @return array Returns search results**/function PLG_doSearch($query, $datestart, $dateend, $topic, $type, $author) { global $_TABLES, $_CONF; $search_results = array(); require_once($_CONF['path_system'] . 'classes/plugin.class.php'); $result = DB_query("SELECT pi_name FROM {$_TABLES['plugins']} WHERE pi_enabled = 1"); $nrows = DB_numRows($result); $nrows_plugins = 0; $total_plugins = 0; for ($i = 1; $i <= $nrows; $i++) { $A = DB_fetchArray($result); $function = 'plugin_dopluginsearch_' . $A['pi_name']; if (function_exists($function)) { $plugin_result = $function($query, $datestart, $dateend, $topic, $type, $author); $nrows_plugins = $nrows_plugins + $plugin_result->num_searchresults; $total_plugins = $total_plugins + $plugin_result->num_itemssearched; $search_results[$i] = $plugin_result; } // no else because implementation of this API function not required } return array($nrows_plugins, $total_plugins, $search_results);}/*** Asks each plugin to report any submissions they may have in their* submission queue** @return int Number of submissions in queue for plugins**/function PLG_getSubmissionCount() { global $_TABLES; $result = DB_query("SELECT pi_name FROM {$_TABLES['plugins']} WHERE pi_enabled = 1"); $nrows = DB_numRows($result); $num = 0; for ($i = 1; $i <= $nrows; $i++) { $A = DB_fetchArray($result); $function = 'plugin_submissioncount_' . $A['pi_name']; if (function_exists($function)) { $num = $num + $function(); } } return $num;}/*** This function will show any plugin user options in the* user block on every page* NOTE: the plugin is responsible for it's own security.** @return array Returns options to add to user menu**/function PLG_getUserOptions() { global $_TABLES; $result = DB_query("SELECT pi_name FROM {$_TABLES['plugins']} WHERE pi_enabled = 1"); $nrows = DB_numRows($result); $plugin = new Plugin(); $counter = 0; for ($i = 1; $i <= $nrows; $i++) { $A = DB_fetchArray($result); $function = 'plugin_getuseroption_' . $A['pi_name']; if (function_exists($function)) { // I know this uses the adminlabel, adminurl but who cares? list($plugin->adminlabel, $plugin->adminurl, $plugin->numsubmissions) = $function(); if (!empty ($plugin->adminlabel) && !empty ($plugin->adminurl)) { $counter++; $plgresults[$counter] = $plugin; } $plugin->reset(); } } return $plgresults;}/** * This function will show any plugin adminstrative options in the* admin functions block on every page (assuming the user is an admin* and is logged in).* NOTE: the plugin is responsible for it's own security. ** @return array Returns options to put in admin menu**/function PLG_getAdminOptions() { global $_TABLES; $result = DB_query("SELECT pi_name FROM {$_TABLES['plugins']} WHERE pi_enabled = 1"); $nrows = DB_numRows($result); $plugin = new Plugin(); $counter = 0; for ($i = 1; $i <= $nrows; $i++) { $A = DB_fetchArray($result); $function = 'plugin_getadminoption_' . $A['pi_name']; if (function_exists($function)) { list($plugin->adminlabel, $plugin->adminurl, $plugin->numsubmissions) = $function(); if (!empty ($plugin->adminlabel) && !empty ($plugin->adminurl)) { $counter++; $plgresults[$counter] = $plugin; } $plugin->reset(); } } return $plgresults;}/*** This function is responsible for calling* plugin_moderationapproves_<pluginname> which approves an item from the* submission queue for a plugin.** @param string $type Plugin name to do submission approval for* @param string $id used to identify the record to approve* @return boolean Returns true on success otherwise false**/function PLG_approveSubmission($type, $id) { $args[1] = $id; return PLG_callFunctionForOnePlugin('plugin_moderationapprove_' . $type, $args);}/*** This function is responsible for calling * plugin_moderationdelete_<pluginname> which deletes an item from the* submission queue for a plugin. ** @param string $type Plugin to do submission deletion for* @param string $id used to identify the record for which to delete* @return boolean Returns true on success otherwise false**/function PLG_deleteSubmission($type, $id) { $args[1] = $id; return PLG_callFunctionForOnePlugin('plugin_moderationdelete_' . $type, $args);}/*** This function calls the plugin_savesubmission_<pluginname> to save* a user submission** @param string $type Plugin to save submission for* @param array $A holds plugin specific data to save* @return boolean Returns true on success otherwise false**/function PLG_saveSubmission($type, $A) { $args[1] = $A; return PLG_callFunctionForOnePlugin('plugin_savesubmission_' . $type, $args);}/*** This function shows the option for all plugins at the top of the * command and control center.** @return array Returns Command and Control options for moderation.php**/function PLG_getCCOptions() { global $_TABLES, $_CONF; $result = DB_query("SELECT pi_name FROM {$_TABLES['plugins']} WHERE pi_enabled = 1"); $nrows = DB_numRows($result); require_once($_CONF['path_system'] . 'classes/plugin.class.php'); $cur_plugin = new Plugin(); $plugins = array(); for ($i = 1; $i <= $nrows; $i++) { $A = DB_fetchArray($result); $function = 'plugin_cclabel_' . $A['pi_name']; if (function_exists($function)) { $cur_plugin->reset(); $cclabel = $function (); if ($cclabel !== false) { list($cur_plugin->adminlabel, $cur_plugin->adminurl, $cur_plugin->plugin_image) = $cclabel; if (!empty ($cur_plugin->adminlabel) && !empty ($cur_plugin->adminurl) && !empty ($cur_plugin->plugin_image)) { $plugins[$i] = $cur_plugin; } } } } return $plugins;}/*** This function starts the chain of calls needed to show any submissions* needing moderation for the plugins.** @return string returns list of items needing moderation for plugins**/function PLG_showModerationList() { global $_TABLES, $_CONF; $result = DB_query("SELECT pi_name FROM {$_TABLES['plugins']} WHERE pi_enabled = 1"); $nrows = DB_numRows($result); for ($i = 1; $i <=$nrows; $i++) { $A = DB_fetchArray($result); $retval .= itemlist($A['pi_name']); } return $retval;}/*** This function is responsible for setting the plugin-specific values* needed by moderation.php to approve stuff.** @param string $type Plugin to call function for* @return string**/function PLG_getModerationValues($type) { return PLG_callFunctionForOnePlugin('plugin_moderationvalues_' . $type);}/*** This function is resonsible for calling plugin_submit_<pluginname> so* that the submission form for the plugin is displayed.** @param string $type Plugin to show submission form for* @return string HTML for submit form for plugin**/function PLG_showSubmitForm($type) { return PLG_callFunctionForOnePlugin('plugin_submit_' . $type);}/*** This function will show the centerblock for any plugin * It will be display before any news and after any defined staticpage content.* The plugin is responsible to format the output correctly.** @param where int 1 = top, 2 = after feat. story, 3 = bottom of page* @param page int page number (1, ...)* @param topic string topic ID or empty string == front page* @return Formatted center block content**/function PLG_showCenterblock($where = 1, $page = 1, $topic = '') { global $_TABLES, $PLG_bufferCenterAPI, $PLG_buffered; $retval = ''; // buffer function names since we're coming back for them two more times if (!$PLG_buffered) { $result = DB_query("SELECT pi_name FROM {$_TABLES['plugins']} WHERE pi_enabled = 1"); $nrows = DB_numRows($result); $PLG_bufferCenterAPI = array (); for ($i = 0; $i < $nrows; $i++) { $A = DB_fetchArray ($result); $function = 'plugin_centerblock_' . $A['pi_name']; if (function_exists ($function)) { $PLG_bufferCenterAPI[$A['pi_name']] = $function; } } $PLG_buffered = true; } foreach ($PLG_bufferCenterAPI as $function) { $retval .= $function ($where, $page, $topic); if (($where == 0) && !empty ($retval)) { break; } } return $retval;}/*** This function will inform all plugins when a new user account is created.** @param int $uid user id of the new user account**/function PLG_createUser ($uid){ global $_TABLES; $result = DB_query ("SELECT pi_name FROM {$_TABLES['plugins']} WHERE pi_enabled = 1"); $nrows = DB_numRows ($result); for ($i = 1; $i <= $nrows; $i++) { $A = DB_fetchArray ($result); $function = 'plugin_user_create_' . $A['pi_name']; if (function_exists ($function)) { $function ($uid); } }}/*** This function will inform all plugins when a user account is deleted.** @param int $uid user id of the deleted user account**/function PLG_deleteUser ($uid){ global $_TABLES; $result = DB_query ("SELECT pi_name FROM {$_TABLES['plugins']} WHERE pi_enabled = 1"); $nrows = DB_numRows ($result); for ($i = 1; $i <= $nrows; $i++) { $A = DB_fetchArray ($result); $function = 'plugin_user_delete_' . $A['pi_name']; if (function_exists ($function)) { $function ($uid); } }}/*** Geeklog is about to display the edit form for the user's profile. Plugins* now get a chance to add their own variables and input fields to the form.** @param int $uid user id of the user profile to be edited* @param ref $template reference of the Template for the profile edit form**/function PLG_profileVariablesEdit ($uid, &$template){ global $_TABLES; $result = DB_query("SELECT pi_name FROM {$_TABLES['plugins']} WHERE pi_enabled = 1"); $nrows = DB_numRows($result); for ($i = 1; $i <= $nrows; $i++) { $A = DB_fetchArray($result); $function = 'plugin_profilevariablesedit_' . $A['pi_name']; if (function_exists($function)) { $function ($uid, $template); } }}/*** Geeklog is about to display the edit form for the user's profile. Plugins* now get a chance to add their own blocks below the standard form.** @param int $uid user id of the user profile to be edited* @return string HTML for additional block(s)**/function PLG_profileBlocksEdit ($uid){ global $_TABLES; $retval = ''; $result = DB_query("SELECT pi_name FROM {$_TABLES['plugins']} WHERE pi_enabled = 1"); $nrows = DB_numRows($result); for ($i = 1; $i <= $nrows; $i++) { $A = DB_fetchArray($result); $function = 'plugin_profileblocksedit_' . $A['pi_name']; if (function_exists($function)) { $retval .= $function ($uid); } } return $retval;}/*** Geeklog is about to display the user's profile. Plugins now get a chance to* add their own variables to the profile.** @param int $uid user id of the user profile to be edited* @param ref $template reference of the Template for the profile edit form**/function PLG_profileVariablesDisplay ($uid, &$template){ global $_TABLES; $result = DB_query("SELECT pi_name FROM {$_TABLES['plugins']} WHERE pi_enabled = 1"); $nrows = DB_numRows($result); for ($i = 1; $i <= $nrows; $i++) { $A = DB_fetchArray($result); $function = 'plugin_profilevariablesdisplay_' . $A['pi_name']; if (function_exists($function)) { $function ($uid, $template); } }}/*** Geeklog is about to display the user's profile. Plugins now get a chance to* add their own blocks below the standard profile form.** @param int $uid user id of the user profile to be edited* @return string HTML for additional block(s)**/function PLG_profileBlocksDisplay ($uid){ global $_TABLES; $retval = ''; $result = DB_query("SELECT pi_name FROM {$_TABLES['plugins']} WHERE pi_enabled = 1"); $nrows = DB_numRows($result); for ($i = 1; $i <= $nrows; $i++) { $A = DB_fetchArray($result); $function = 'plugin_profileblocksdisplay_' . $A['pi_name']; if (function_exists($function)) { $retval .= $function ($uid); } } return $retval;}/*** The user wants to save changes to his/her profile. Any plugin that added it's* own variables or blocks to the profile input form will now have to extract* it's data and save it.* Plugins will have to refer to the global $HTTP_POST_VARS array to get the* actual data.** @param string $plugin name of a specific plugin or empty (all plugins)**/function PLG_profileExtrasSave ($plugin = ''){ if (empty ($plugin)) { PLG_callFunctionForAllPlugins ('plugin_profileextrassave_'); } else { PLG_callFunctionForOnePlugin ('plugin_profileextrassave_' . $plugin); }}/*** This function is called from COM_siteHeader and will return additional Header information* This can be Javascript functions required for the plugin or extra Metatags** @return string returns a concatenated string of all plugins extra header code*/function PLG_getHeaderCode(){ global $_TABLES; $result = DB_query("SELECT pi_name FROM {$_TABLES['plugins']} WHERE pi_enabled = 1"); $nrows = DB_numRows($result); for ($i = 1; $i <= $nrows; $i++) { $A = DB_fetchArray($result); $function = 'plugin_getheadercode_' . $A['pi_name']; if (function_exists($function)) { $headercode .= $function(); } } return $headercode;}?>
