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Diffstat (limited to 'engine/lib/admin.php')
| -rw-r--r-- | engine/lib/admin.php | 648 |
1 files changed, 648 insertions, 0 deletions
diff --git a/engine/lib/admin.php b/engine/lib/admin.php new file mode 100644 index 000000000..35ab5599d --- /dev/null +++ b/engine/lib/admin.php @@ -0,0 +1,648 @@ +<?php +/** + * Elgg admin functions. + * + * Admin menu items + * Elgg has a convenience function for adding menu items to the sidebar of the + * admin area. @see elgg_register_admin_menu_item() + * + * Admin pages + * Plugins no not need to provide their own page handler to add a page to the + * admin area. A view placed at admin/<section>/<subsection> can be access + * at http://example.org/admin/<section>/<subsection>. The title of the page + * will be elgg_echo('admin:<section>:<subsection>'). For an example of how to + * add a page to the admin area, see the diagnostics plugin. + * + * Admin notices + * System messages (success and error messages) are used in both the main site + * and the admin area. There is a special presistent message for the admin area + * called an admin notice. It should be used when a plugin requires an + * administrator to take an action. An example is the categories plugin + * requesting that the administrator set site categories after the plugin has + * been activated. @see elgg_add_admin_notice() + * + * + * @package Elgg.Core + * @subpackage Admin + */ + +/** + * Get the admin users + * + * @param array $options Options array, @see elgg_get_entities() for parameters + * + * @return mixed Array of admin users or false on failure. If a count, returns int. + * @since 1.8.0 + */ +function elgg_get_admins(array $options = array()) { + global $CONFIG; + + if (isset($options['joins'])) { + if (!is_array($options['joins'])) { + $options['joins'] = array($options['joins']); + } + $options['joins'][] = "join {$CONFIG->dbprefix}users_entity u on e.guid=u.guid"; + } else { + $options['joins'] = array("join {$CONFIG->dbprefix}users_entity u on e.guid=u.guid"); + } + + if (isset($options['wheres'])) { + if (!is_array($options['wheres'])) { + $options['wheres'] = array($options['wheres']); + } + $options['wheres'][] = "u.admin = 'yes'"; + } else { + $options['wheres'][] = "u.admin = 'yes'"; + } + + return elgg_get_entities($options); +} + +/** + * Write a persistent message to the admin view. + * Useful to alert the admin to take a certain action. + * The id is a unique ID that can be cleared once the admin + * completes the action. + * + * eg: add_admin_notice('twitter_services_no_api', + * 'Before your users can use Twitter services on this site, you must set up + * the Twitter API key in the <a href="link">Twitter Services Settings</a>'); + * + * @param string $id A unique ID that your plugin can remember + * @param string $message Body of the message + * + * @return bool + * @since 1.8.0 + */ +function elgg_add_admin_notice($id, $message) { + if ($id && $message) { + if (elgg_admin_notice_exists($id)) { + return false; + } + + // need to handle when no one is logged in + $old_ia = elgg_set_ignore_access(true); + + $admin_notice = new ElggObject(); + $admin_notice->subtype = 'admin_notice'; + // admins can see ACCESS_PRIVATE but no one else can. + $admin_notice->access_id = ACCESS_PRIVATE; + $admin_notice->admin_notice_id = $id; + $admin_notice->description = $message; + + $result = $admin_notice->save(); + + elgg_set_ignore_access($old_ia); + + return (bool)$result; + } + + return false; +} + +/** + * Remove an admin notice by ID. + * + * eg In actions/twitter_service/save_settings: + * if (is_valid_twitter_api_key()) { + * delete_admin_notice('twitter_services_no_api'); + * } + * + * @param string $id The unique ID assigned in add_admin_notice() + * + * @return bool + * @since 1.8.0 + */ +function elgg_delete_admin_notice($id) { + if (!$id) { + return FALSE; + } + $result = TRUE; + $notices = elgg_get_entities_from_metadata(array( + 'metadata_name' => 'admin_notice_id', + 'metadata_value' => $id + )); + + if ($notices) { + // in case a bad plugin adds many, let it remove them all at once. + foreach ($notices as $notice) { + $result = ($result && $notice->delete()); + } + return $result; + } + return FALSE; +} + +/** + * List all admin messages. + * + * @param int $limit Limit + * + * @return array List of admin notices + * @since 1.8.0 + */ +function elgg_get_admin_notices($limit = 10) { + return elgg_get_entities_from_metadata(array( + 'type' => 'object', + 'subtype' => 'admin_notice', + 'limit' => $limit + )); +} + +/** + * Check if an admin notice is currently active. + * + * @param string $id The unique ID used to register the notice. + * + * @return bool + * @since 1.8.0 + */ +function elgg_admin_notice_exists($id) { + $notice = elgg_get_entities_from_metadata(array( + 'type' => 'object', + 'subtype' => 'admin_notice', + 'metadata_name_value_pair' => array('name' => 'admin_notice_id', 'value' => $id) + )); + + return ($notice) ? TRUE : FALSE; +} + +/** + * Add an admin area section or child section. + * This is a wrapper for elgg_register_menu_item(). + * + * Used in conjuction with http://elgg.org/admin/section_id/child_section style + * page handler. See the documentation at the top of this file for more details + * on that. + * + * The text of the menu item is obtained from elgg_echo(admin:$parent_id:$menu_id) + * + * This function handles registering the parent if it has not been registered. + * + * @param string $section The menu section to add to + * @param string $menu_id The unique ID of section + * @param string $parent_id If a child section, the parent section id + * @param int $priority The menu item priority + * + * @return bool + * @since 1.8.0 + */ +function elgg_register_admin_menu_item($section, $menu_id, $parent_id = NULL, $priority = 100) { + + // make sure parent is registered + if ($parent_id && !elgg_is_menu_item_registered('page', $parent_id)) { + elgg_register_admin_menu_item($section, $parent_id); + } + + // in the admin section parents never have links + if ($parent_id) { + $href = "admin/$parent_id/$menu_id"; + } else { + $href = NULL; + } + + $name = $menu_id; + if ($parent_id) { + $name = "$parent_id:$name"; + } + + return elgg_register_menu_item('page', array( + 'name' => $name, + 'href' => $href, + 'text' => elgg_echo("admin:$name"), + 'context' => 'admin', + 'parent_name' => $parent_id, + 'priority' => $priority, + 'section' => $section + )); +} + +/** + * Initialize the admin backend. + * @return void + * @access private + */ +function admin_init() { + elgg_register_action('admin/user/ban', '', 'admin'); + elgg_register_action('admin/user/unban', '', 'admin'); + elgg_register_action('admin/user/delete', '', 'admin'); + elgg_register_action('admin/user/resetpassword', '', 'admin'); + elgg_register_action('admin/user/makeadmin', '', 'admin'); + elgg_register_action('admin/user/removeadmin', '', 'admin'); + + elgg_register_action('admin/site/update_basic', '', 'admin'); + elgg_register_action('admin/site/update_advanced', '', 'admin'); + elgg_register_action('admin/site/flush_cache', '', 'admin'); + elgg_register_action('admin/site/unlock_upgrade', '', 'admin'); + + elgg_register_action('admin/menu/save', '', 'admin'); + + elgg_register_action('admin/delete_admin_notice', '', 'admin'); + + elgg_register_action('profile/fields/reset', '', 'admin'); + elgg_register_action('profile/fields/add', '', 'admin'); + elgg_register_action('profile/fields/edit', '', 'admin'); + elgg_register_action('profile/fields/delete', '', 'admin'); + elgg_register_action('profile/fields/reorder', '', 'admin'); + + elgg_register_simplecache_view('css/admin'); + elgg_register_simplecache_view('js/admin'); + $url = elgg_get_simplecache_url('js', 'admin'); + elgg_register_js('elgg.admin', $url); + elgg_register_js('jquery.jeditable', 'vendors/jquery/jquery.jeditable.mini.js'); + + // administer + // dashboard + elgg_register_menu_item('page', array( + 'name' => 'dashboard', + 'href' => 'admin/dashboard', + 'text' => elgg_echo('admin:dashboard'), + 'context' => 'admin', + 'priority' => 10, + 'section' => 'administer' + )); + // statistics + elgg_register_admin_menu_item('administer', 'statistics', null, 20); + elgg_register_admin_menu_item('administer', 'overview', 'statistics'); + elgg_register_admin_menu_item('administer', 'server', 'statistics'); + + // users + elgg_register_admin_menu_item('administer', 'users', null, 20); + elgg_register_admin_menu_item('administer', 'online', 'users', 10); + elgg_register_admin_menu_item('administer', 'admins', 'users', 20); + elgg_register_admin_menu_item('administer', 'newest', 'users', 30); + elgg_register_admin_menu_item('administer', 'add', 'users', 40); + + // configure + // plugins + elgg_register_menu_item('page', array( + 'name' => 'plugins', + 'href' => 'admin/plugins', + 'text' => elgg_echo('admin:plugins'), + 'context' => 'admin', + 'priority' => 75, + 'section' => 'configure' + )); + + // settings + elgg_register_admin_menu_item('configure', 'appearance', null, 50); + elgg_register_admin_menu_item('configure', 'settings', null, 100); + elgg_register_admin_menu_item('configure', 'basic', 'settings', 10); + elgg_register_admin_menu_item('configure', 'advanced', 'settings', 20); + elgg_register_admin_menu_item('configure', 'menu_items', 'appearance', 30); + elgg_register_admin_menu_item('configure', 'profile_fields', 'appearance', 40); + // default widgets is added via an event handler elgg_default_widgets_init() in widgets.php + // because it requires additional setup. + + // plugin settings are added in elgg_admin_add_plugin_settings_menu() via the admin page handler + // for performance reasons. + + // we want plugin settings menu items to be sorted alphabetical + if (elgg_in_context('admin')) { + elgg_register_plugin_hook_handler('prepare', 'menu:page', 'elgg_admin_sort_page_menu'); + } + + if (elgg_is_admin_logged_in()) { + elgg_register_menu_item('topbar', array( + 'name' => 'administration', + 'href' => 'admin', + 'text' => elgg_view_icon('settings') . elgg_echo('admin'), + 'priority' => 100, + 'section' => 'alt', + )); + } + + // widgets + $widgets = array('online_users', 'new_users', 'content_stats', 'admin_welcome', 'control_panel'); + foreach ($widgets as $widget) { + elgg_register_widget_type( + $widget, + elgg_echo("admin:widget:$widget"), + elgg_echo("admin:widget:$widget:help"), + 'admin' + ); + } + + // automatic adding of widgets for admin + elgg_register_event_handler('make_admin', 'user', 'elgg_add_admin_widgets'); + + elgg_register_page_handler('admin', 'admin_page_handler'); + elgg_register_page_handler('admin_plugin_screenshot', 'admin_plugin_screenshot_page_handler'); + elgg_register_page_handler('admin_plugin_text_file', 'admin_markdown_page_handler'); +} + +/** + * Create the plugin settings page menu. + * + * This is done in a separate function called from the admin + * page handler because of performance concerns. + * + * @return void + * @access private + * @since 1.8.0 + */ +function elgg_admin_add_plugin_settings_menu() { + + $active_plugins = elgg_get_plugins('active'); + if (!$active_plugins) { + // nothing added because no items + return FALSE; + } + + foreach ($active_plugins as $plugin) { + $plugin_id = $plugin->getID(); + $settings_view_old = 'settings/' . $plugin_id . '/edit'; + $settings_view_new = 'plugins/' . $plugin_id . '/settings'; + if (elgg_view_exists($settings_view_new) || elgg_view_exists($settings_view_old)) { + elgg_register_menu_item('page', array( + 'name' => $plugin_id, + 'href' => "admin/plugin_settings/$plugin_id", + 'text' => $plugin->getManifest()->getName(), + 'parent_name' => 'settings', + 'context' => 'admin', + 'section' => 'configure', + )); + } + } +} + +/** + * Sort the plugin settings menu items + * + * @param string $hook + * @param string $type + * @param array $return + * @param array $params + * + * @return void + * @since 1.8.0 + * @access private + */ +function elgg_admin_sort_page_menu($hook, $type, $return, $params) { + $configure_items = $return['configure']; + foreach ($configure_items as $menu_item) { + if ($menu_item->getName() == 'settings') { + $settings = $menu_item; + } + } + + // keep the basic and advanced settings at the top + $children = $settings->getChildren(); + $site_settings = array_splice($children, 0, 2); + usort($children, array('ElggMenuBuilder', 'compareByText')); + array_splice($children, 0, 0, $site_settings); + $settings->setChildren($children); +} + +/** + * Handles any set up required for administration pages + * + * @return void + * @access private + */ +function admin_pagesetup() { + if (elgg_in_context('admin')) { + $url = elgg_get_simplecache_url('css', 'admin'); + elgg_register_css('elgg.admin', $url); + elgg_load_css('elgg.admin'); + elgg_unregister_css('elgg'); + + // setup footer menu + elgg_register_menu_item('admin_footer', array( + 'name' => 'faq', + 'text' => elgg_echo('admin:footer:faq'), + 'href' => 'http://docs.elgg.org/wiki/Category:Administration_FAQ', + )); + + elgg_register_menu_item('admin_footer', array( + 'name' => 'manual', + 'text' => elgg_echo('admin:footer:manual'), + 'href' => 'http://docs.elgg.org/wiki/Administration_Manual', + )); + + elgg_register_menu_item('admin_footer', array( + 'name' => 'community_forums', + 'text' => elgg_echo('admin:footer:community_forums'), + 'href' => 'http://community.elgg.org/groups/all/', + )); + + elgg_register_menu_item('admin_footer', array( + 'name' => 'blog', + 'text' => elgg_echo('admin:footer:blog'), + 'href' => 'http://blog.elgg.org/', + )); + } +} + +/** + * Handle admin pages. Expects corresponding views as admin/section/subsection + * + * @param array $page Array of pages + * + * @return bool + * @access private + */ +function admin_page_handler($page) { + + admin_gatekeeper(); + elgg_admin_add_plugin_settings_menu(); + elgg_set_context('admin'); + + elgg_unregister_css('elgg'); + elgg_load_js('elgg.admin'); + elgg_load_js('jquery.jeditable'); + + // default to dashboard + if (!isset($page[0]) || empty($page[0])) { + $page = array('dashboard'); + } + + // was going to fix this in the page_handler() function but + // it's commented to explicitly return a string if there's a trailing / + if (empty($page[count($page) - 1])) { + array_pop($page); + } + + $vars = array('page' => $page); + + // special page for plugin settings since we create the form for them + if ($page[0] == 'plugin_settings' && isset($page[1]) && + (elgg_view_exists("settings/{$page[1]}/edit") || elgg_view_exists("plugins/{$page[1]}/settings"))) { + + $view = 'admin/plugin_settings'; + $plugin = elgg_get_plugin_from_id($page[1]); + $vars['plugin'] = $plugin; + + $title = elgg_echo("admin:{$page[0]}"); + } else { + $view = 'admin/' . implode('/', $page); + $title = elgg_echo("admin:{$page[0]}"); + if (count($page) > 1) { + $title .= ' : ' . elgg_echo('admin:' . implode(':', $page)); + } + } + + // gets content and prevents direct access to 'components' views + if ($page[0] == 'components' || !($content = elgg_view($view, $vars))) { + $title = elgg_echo('admin:unknown_section'); + $content = elgg_echo('admin:unknown_section'); + } + + $body = elgg_view_layout('admin', array('content' => $content, 'title' => $title)); + echo elgg_view_page($title, $body, 'admin'); + return true; +} + +/** + * Serves up screenshots for plugins from + * admin_plugin_screenshot/<plugin_id>/<size>/<ss_name>.<ext> + * + * @param array $pages The pages array + * @return bool + * @access private + */ +function admin_plugin_screenshot_page_handler($pages) { + // only admins can use this for security + admin_gatekeeper(); + + $plugin_id = elgg_extract(0, $pages); + // only thumbnail or full. + $size = elgg_extract(1, $pages, 'thumbnail'); + + // the rest of the string is the filename + $filename_parts = array_slice($pages, 2); + $filename = implode('/', $filename_parts); + $filename = sanitise_filepath($filename, false); + + $plugin = new ElggPlugin($plugin_id); + if (!$plugin) { + $file = elgg_get_root_path() . '_graphics/icons/default/medium.png'; + } else { + $file = $plugin->getPath() . $filename; + if (!file_exists($file)) { + $file = elgg_get_root_path() . '_graphics/icons/default/medium.png'; + } + } + + header("Content-type: image/jpeg"); + + // resize to 100x100 for thumbnails + switch ($size) { + case 'thumbnail': + echo get_resized_image_from_existing_file($file, 100, 100, true); + break; + + case 'full': + default: + echo file_get_contents($file); + break; + } + return true; +} + +/** + * Formats and serves out markdown files from plugins. + * + * URLs in format like admin_plugin_text_file/<plugin_id>/filename.ext + * + * The only valid files are: + * * README.txt + * * CHANGES.txt + * * INSTALL.txt + * * COPYRIGHT.txt + * * LICENSE.txt + * + * @param type $page + * @return bool + * @access private + */ +function admin_markdown_page_handler($pages) { + admin_gatekeeper(); + + elgg_set_context('admin'); + + elgg_unregister_css('elgg'); + elgg_load_js('elgg.admin'); + elgg_load_js('jquery.jeditable'); + elgg_load_library('elgg:markdown'); + + $plugin_id = elgg_extract(0, $pages); + $plugin = elgg_get_plugin_from_id($plugin_id); + $filename = elgg_extract(1, $pages); + + $error = false; + if (!$plugin) { + $error = elgg_echo('admin:plugins:markdown:unknown_plugin'); + $body = elgg_view_layout('admin', array('content' => $error, 'title' => $error)); + echo elgg_view_page($error, $body, 'admin'); + return true; + } + + $text_files = $plugin->getAvailableTextFiles(); + + if (!array_key_exists($filename, $text_files)) { + $error = elgg_echo('admin:plugins:markdown:unknown_file'); + } + + $file = $text_files[$filename]; + $file_contents = file_get_contents($file); + + if (!$file_contents) { + $error = elgg_echo('admin:plugins:markdown:unknown_file'); + } + + if ($error) { + $title = $error; + $body = elgg_view_layout('admin', array('content' => $error, 'title' => $title)); + echo elgg_view_page($title, $body, 'admin'); + return true; + } + + $title = $plugin->getManifest()->getName() . ": $filename"; + $text = Markdown($file_contents); + + $body = elgg_view_layout('admin', array( + // setting classes here because there's no way to pass classes + // to the layout + 'content' => '<div class="elgg-markdown">' . $text . '</div>', + 'title' => $title + )); + + echo elgg_view_page($title, $body, 'admin'); + return true; +} + +/** + * Adds default admin widgets to the admin dashboard. + * + * @return void + * @access private + */ +function elgg_add_admin_widgets($event, $type, $user) { + elgg_set_ignore_access(true); + + // check if the user already has widgets + if (elgg_get_widgets($user->getGUID(), 'admin')) { + return true; + } + + // In the form column => array of handlers in order, top to bottom + $adminWidgets = array( + 1 => array('control_panel', 'admin_welcome'), + 2 => array('online_users', 'new_users', 'content_stats'), + ); + + foreach ($adminWidgets as $column => $handlers) { + foreach ($handlers as $position => $handler) { + $guid = elgg_create_widget($user->getGUID(), $handler, 'admin'); + if ($guid) { + $widget = get_entity($guid); + $widget->move($column, $position); + } + } + } + elgg_set_ignore_access(false); +} + +elgg_register_event_handler('init', 'system', 'admin_init'); +elgg_register_event_handler('pagesetup', 'system', 'admin_pagesetup', 1000); |