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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle 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 3 of the License, or
// (at your option) any later version.
//
// Moodle 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 Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Defines classes used for plugins management
*
* This library provides a unified interface to various plugin types in
* Moodle. It is mainly used by the plugins management admin page and the
* plugins check page during the upgrade.
*
* @package core
* @subpackage admin
* @copyright 2011 David Mudrak <david@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
/**
* Singleton class providing general plugins management functionality
*/
class plugin_manager {
/** the plugin is shipped with standard Moodle distribution */
const PLUGIN_SOURCE_STANDARD = 'std';
/** the plugin is added extension */
const PLUGIN_SOURCE_EXTENSION = 'ext';
/** the plugin uses neither database nor capabilities, no versions */
const PLUGIN_STATUS_NODB = 'nodb';
/** the plugin is up-to-date */
const PLUGIN_STATUS_UPTODATE = 'uptodate';
/** the plugin is about to be installed */
const PLUGIN_STATUS_NEW = 'new';
/** the plugin is about to be upgraded */
const PLUGIN_STATUS_UPGRADE = 'upgrade';
/** the standard plugin is about to be deleted */
const PLUGIN_STATUS_DELETE = 'delete';
/** the version at the disk is lower than the one already installed */
const PLUGIN_STATUS_DOWNGRADE = 'downgrade';
/** the plugin is installed but missing from disk */
const PLUGIN_STATUS_MISSING = 'missing';
/** @var plugin_manager holds the singleton instance */
protected static $singletoninstance;
/** @var array of raw plugins information */
protected $pluginsinfo = null;
/** @var array of raw subplugins information */
protected $subpluginsinfo = null;
/**
* Direct initiation not allowed, use the factory method {@link self::instance()}
*/
protected function __construct() {
}
/**
* Sorry, this is singleton
*/
protected function __clone() {
}
/**
* Factory method for this class
*
* @return plugin_manager the singleton instance
*/
public static function instance() {
if (is_null(self::$singletoninstance)) {
self::$singletoninstance = new self();
}
return self::$singletoninstance;
}
/**
* Returns a tree of known plugins and information about them
*
* @param bool $disablecache force reload, cache can be used otherwise
* @return array 2D array. The first keys are plugin type names (e.g. qtype);
* the second keys are the plugin local name (e.g. multichoice); and
* the values are the corresponding objects extending {@link plugininfo_base}
*/
public function get_plugins($disablecache=false) {
global $CFG;
if ($disablecache or is_null($this->pluginsinfo)) {
// Hack: include mod and editor subplugin management classes first,
// the adminlib.php is supposed to contain extra admin settings too.
require_once($CFG->libdir.'/adminlib.php');
foreach(array('mod', 'editor') as $type) {
foreach (get_plugin_list($type) as $dir) {
if (file_exists("$dir/adminlib.php")) {
include_once("$dir/adminlib.php");
}
}
}
$this->pluginsinfo = array();
$plugintypes = get_plugin_types();
$plugintypes = $this->reorder_plugin_types($plugintypes);
foreach ($plugintypes as $plugintype => $plugintyperootdir) {
if (in_array($plugintype, array('base', 'general'))) {
throw new coding_exception('Illegal usage of reserved word for plugin type');
}
if (class_exists('plugininfo_' . $plugintype)) {
$plugintypeclass = 'plugininfo_' . $plugintype;
} else {
$plugintypeclass = 'plugininfo_general';
}
if (!in_array('plugininfo_base', class_parents($plugintypeclass))) {
throw new coding_exception('Class ' . $plugintypeclass . ' must extend plugininfo_base');
}
$plugins = call_user_func(array($plugintypeclass, 'get_plugins'), $plugintype, $plugintyperootdir, $plugintypeclass);
$this->pluginsinfo[$plugintype] = $plugins;
}
if (empty($CFG->disableupdatenotifications) and !during_initial_install()) {
// append the information about available updates provided by {@link available_update_checker()}
$provider = available_update_checker::instance();
foreach ($this->pluginsinfo as $plugintype => $plugins) {
foreach ($plugins as $plugininfoholder) {
$plugininfoholder->check_available_updates($provider);
}
}
}
}
return $this->pluginsinfo;
}
/**
* Returns list of plugins that define their subplugins and the information
* about them from the db/subplugins.php file.
*
* At the moment, only activity modules and editors can define subplugins.
*
* @param bool $disablecache force reload, cache can be used otherwise
* @return array with keys like 'mod_quiz', and values the data from the
* corresponding db/subplugins.php file.
*/
public function get_subplugins($disablecache=false) {
if ($disablecache or is_null($this->subpluginsinfo)) {
$this->subpluginsinfo = array();
foreach (array('mod', 'editor') as $type) {
$owners = get_plugin_list($type);
foreach ($owners as $component => $ownerdir) {
$componentsubplugins = array();
if (file_exists($ownerdir . '/db/subplugins.php')) {
$subplugins = array();
include($ownerdir . '/db/subplugins.php');
foreach ($subplugins as $subplugintype => $subplugintyperootdir) {
$subplugin = new stdClass();
$subplugin->type = $subplugintype;
$subplugin->typerootdir = $subplugintyperootdir;
$componentsubplugins[$subplugintype] = $subplugin;
}
$this->subpluginsinfo[$type . '_' . $component] = $componentsubplugins;
}
}
}
}
return $this->subpluginsinfo;
}
/**
* Returns the name of the plugin that defines the given subplugin type
*
* If the given subplugin type is not actually a subplugin, returns false.
*
* @param string $subplugintype the name of subplugin type, eg. workshopform or quiz
* @return false|string the name of the parent plugin, eg. mod_workshop
*/
public function get_parent_of_subplugin($subplugintype) {
$parent = false;
foreach ($this->get_subplugins() as $pluginname => $subplugintypes) {
if (isset($subplugintypes[$subplugintype])) {
$parent = $pluginname;
break;
}
}
return $parent;
}
/**
* Returns a localized name of a given plugin
*
* @param string $plugin name of the plugin, eg mod_workshop or auth_ldap
* @return string
*/
public function plugin_name($plugin) {
list($type, $name) = normalize_component($plugin);
return $this->pluginsinfo[$type][$name]->displayname;
}
/**
* Returns a localized name of a plugin type in plural form
*
* Most plugin types define their names in core_plugin lang file. In case of subplugins,
* we try to ask the parent plugin for the name. In the worst case, we will return
* the value of the passed $type parameter.
*
* @param string $type the type of the plugin, e.g. mod or workshopform
* @return string
*/
public function plugintype_name_plural($type) {
if (get_string_manager()->string_exists('type_' . $type . '_plural', 'core_plugin')) {
// for most plugin types, their names are defined in core_plugin lang file
return get_string('type_' . $type . '_plural', 'core_plugin');
} else if ($parent = $this->get_parent_of_subplugin($type)) {
// if this is a subplugin, try to ask the parent plugin for the name
if (get_string_manager()->string_exists('subplugintype_' . $type . '_plural', $parent)) {
return $this->plugin_name($parent) . ' / ' . get_string('subplugintype_' . $type . '_plural', $parent);
} else {
return $this->plugin_name($parent) . ' / ' . $type;
}
} else {
return $type;
}
}
/**
* @param string $component frankenstyle component name.
* @return plugininfo_base|null the corresponding plugin information.
*/
public function get_plugin_info($component) {
list($type, $name) = normalize_component($component);
$plugins = $this->get_plugins();
if (isset($plugins[$type][$name])) {
return $plugins[$type][$name];
} else {
return null;
}
}
/**
* Get a list of any other plugins that require this one.
* @param string $component frankenstyle component name.
* @return array of frankensyle component names that require this one.
*/
public function other_plugins_that_require($component) {
$others = array();
foreach ($this->get_plugins() as $type => $plugins) {
foreach ($plugins as $plugin) {
$required = $plugin->get_other_required_plugins();
if (isset($required[$component])) {
$others[] = $plugin->component;
}
}
}
return $others;
}
/**
* Check a dependencies list against the list of installed plugins.
* @param array $dependencies compenent name to required version or ANY_VERSION.
* @return bool true if all the dependencies are satisfied.
*/
public function are_dependencies_satisfied($dependencies) {
foreach ($dependencies as $component => $requiredversion) {
$otherplugin = $this->get_plugin_info($component);
if (is_null($otherplugin)) {
return false;
}
if ($requiredversion != ANY_VERSION and $otherplugin->versiondisk < $requiredversion) {
return false;
}
}
return true;
}
/**
* Checks all dependencies for all installed plugins
*
* This is used by install and upgrade. The array passed by reference as the second
* argument is populated with the list of plugins that have failed dependencies (note that
* a single plugin can appear multiple times in the $failedplugins).
*
* @param int $moodleversion the version from version.php.
* @param array $failedplugins to return the list of plugins with non-satisfied dependencies
* @return bool true if all the dependencies are satisfied for all plugins.
*/
public function all_plugins_ok($moodleversion, &$failedplugins = array()) {
$return = true;
foreach ($this->get_plugins() as $type => $plugins) {
foreach ($plugins as $plugin) {
if (!$plugin->is_core_dependency_satisfied($moodleversion)) {
$return = false;
$failedplugins[] = $plugin->component;
}
if (!$this->are_dependencies_satisfied($plugin->get_other_required_plugins())) {
$return = false;
$failedplugins[] = $plugin->component;
}
}
}
return $return;
}
/**
* Checks if there are some plugins with a known available update
*
* @return bool true if there is at least one available update
*/
public function some_plugins_updatable() {
foreach ($this->get_plugins() as $type => $plugins) {
foreach ($plugins as $plugin) {
if ($plugin->available_updates()) {
return true;
}
}
}
return false;
}
/**
* Defines a list of all plugins that were originally shipped in the standard Moodle distribution,
* but are not anymore and are deleted during upgrades.
*
* The main purpose of this list is to hide missing plugins during upgrade.
*
* @param string $type plugin type
* @param string $name plugin name
* @return bool
*/
public static function is_deleted_standard_plugin($type, $name) {
static $plugins = array(
// do not add 1.9-2.2 plugin removals here
);
if (!isset($plugins[$type])) {
return false;
}
return in_array($name, $plugins[$type]);
}
/**
* Defines a white list of all plugins shipped in the standard Moodle distribution
*
* @param string $type
* @return false|array array of standard plugins or false if the type is unknown
*/
public static function standard_plugins_list($type) {
static $standard_plugins = array(
'assignment' => array(
'offline', 'online', 'upload', 'uploadsingle'
),
'assignsubmission' => array(
'comments', 'file', 'onlinetext'
),
'assignfeedback' => array(
'comments', 'file', 'offline'
),
'auth' => array(
'cas', 'db', 'email', 'fc', 'imap', 'ldap', 'manual', 'mnet',
'nntp', 'nologin', 'none', 'pam', 'pop3', 'radius',
'shibboleth', 'webservice'
),
'block' => array(
'activity_modules', 'admin_bookmarks', 'blog_menu',
'blog_recent', 'blog_tags', 'calendar_month',
'calendar_upcoming', 'comments', 'community',
'completionstatus', 'course_list', 'course_overview',
'course_summary', 'feedback', 'glossary_random', 'html',
'login', 'mentees', 'messages', 'mnet_hosts', 'myprofile',
'navigation', 'news_items', 'online_users', 'participants',
'private_files', 'quiz_results', 'recent_activity',
'rss_client', 'search_forums', 'section_links',
'selfcompletion', 'settings', 'site_main_menu',
'social_activities', 'tag_flickr', 'tag_youtube', 'tags'
),
'booktool' => array(
'exportimscp', 'importhtml', 'print'
),
'coursereport' => array(
//deprecated!
),
'datafield' => array(
'checkbox', 'date', 'file', 'latlong', 'menu', 'multimenu',
'number', 'picture', 'radiobutton', 'text', 'textarea', 'url'
),
'datapreset' => array(
'imagegallery'
),
'editor' => array(
'textarea', 'tinymce'
),
'enrol' => array(
'authorize', 'category', 'cohort', 'database', 'flatfile',
'guest', 'imsenterprise', 'ldap', 'manual', 'meta', 'mnet',
'paypal', 'self'
),
'filter' => array(
'activitynames', 'algebra', 'censor', 'emailprotect',
'emoticon', 'mediaplugin', 'multilang', 'tex', 'tidy',
'urltolink', 'data', 'glossary'
),
'format' => array(
'scorm', 'social', 'topics', 'weeks'
),
'gradeexport' => array(
'ods', 'txt', 'xls', 'xml'
),
'gradeimport' => array(
'csv', 'xml'
),
'gradereport' => array(
'grader', 'outcomes', 'overview', 'user'
),
'gradingform' => array(
'rubric', 'guide'
),
'local' => array(
),
'message' => array(
'email', 'jabber', 'popup'
),
'mnetservice' => array(
'enrol'
),
'mod' => array(
'assign', 'assignment', 'book', 'chat', 'choice', 'data', 'feedback', 'folder',
'forum', 'glossary', 'imscp', 'label', 'lesson', 'lti', 'page',
'quiz', 'resource', 'scorm', 'survey', 'url', 'wiki', 'workshop'
),
'plagiarism' => array(
),
'portfolio' => array(
'boxnet', 'download', 'flickr', 'googledocs', 'mahara', 'picasa'
),
'profilefield' => array(
'checkbox', 'datetime', 'menu', 'text', 'textarea'
),
'qbehaviour' => array(
'adaptive', 'adaptivenopenalty', 'deferredcbm',
'deferredfeedback', 'immediatecbm', 'immediatefeedback',
'informationitem', 'interactive', 'interactivecountback',
'manualgraded', 'missing'
),
'qformat' => array(
'aiken', 'blackboard', 'blackboard_six', 'examview', 'gift',
'learnwise', 'missingword', 'multianswer', 'webct',
'xhtml', 'xml'
),
'qtype' => array(
'calculated', 'calculatedmulti', 'calculatedsimple',
'description', 'essay', 'match', 'missingtype', 'multianswer',
'multichoice', 'numerical', 'random', 'randomsamatch',
'shortanswer', 'truefalse'
),
'quiz' => array(
'grading', 'overview', 'responses', 'statistics'
),
'quizaccess' => array(
'delaybetweenattempts', 'ipaddress', 'numattempts', 'openclosedate',
'password', 'safebrowser', 'securewindow', 'timelimit'
),
'report' => array(
'backups', 'completion', 'configlog', 'courseoverview',
'log', 'loglive', 'outline', 'participation', 'progress', 'questioninstances', 'security', 'stats'
),
'repository' => array(
'alfresco', 'boxnet', 'coursefiles', 'dropbox', 'equella', 'filesystem',
'flickr', 'flickr_public', 'googledocs', 'local', 'merlot',
'picasa', 'recent', 's3', 'upload', 'url', 'user', 'webdav',
'wikimedia', 'youtube'
),
'scormreport' => array(
'basic',
'interactions',
'graphs'
),
'tinymce' => array(
'dragmath', 'moodleemoticon', 'moodleimage', 'moodlemedia', 'moodlenolink', 'spellchecker',
),
'theme' => array(
'afterburner', 'anomaly', 'arialist', 'base', 'binarius',
'boxxie', 'brick', 'canvas', 'formal_white', 'formfactor',
'fusion', 'leatherbound', 'magazine', 'mymobile', 'nimble',
'nonzero', 'overlay', 'serenity', 'sky_high', 'splash',
'standard', 'standardold'
),
'tool' => array(
'assignmentupgrade', 'capability', 'customlang', 'dbtransfer', 'generator',
'health', 'innodb', 'langimport', 'multilangupgrade', 'phpunit', 'profiling',
'qeupgradehelper', 'replace', 'spamcleaner', 'timezoneimport', 'unittest',
'uploaduser', 'unsuproles', 'xmldb'
),
'webservice' => array(
'amf', 'rest', 'soap', 'xmlrpc'
),
'workshopallocation' => array(
'manual', 'random', 'scheduled'
),
'workshopeval' => array(
'best'
),
'workshopform' => array(
'accumulative', 'comments', 'numerrors', 'rubric'
)
);
if (isset($standard_plugins[$type])) {
return $standard_plugins[$type];
} else {
return false;
}
}
/**
* Reorders plugin types into a sequence to be displayed
*
* For technical reasons, plugin types returned by {@link get_plugin_types()} are
* in a certain order that does not need to fit the expected order for the display.
* Particularly, activity modules should be displayed first as they represent the
* real heart of Moodle. They should be followed by other plugin types that are
* used to build the courses (as that is what one expects from LMS). After that,
* other supportive plugin types follow.
*
* @param array $types associative array
* @return array same array with altered order of items
*/
protected function reorder_plugin_types(array $types) {
$fix = array(
'mod' => $types['mod'],
'block' => $types['block'],
'qtype' => $types['qtype'],
'qbehaviour' => $types['qbehaviour'],
'qformat' => $types['qformat'],
'filter' => $types['filter'],
'enrol' => $types['enrol'],
);
foreach ($types as $type => $path) {
if (!isset($fix[$type])) {
$fix[$type] = $path;
}
}
return $fix;
}
}
/**
* General exception thrown by the {@link available_update_checker} class
*/
class available_update_checker_exception extends moodle_exception {
/**
* @param string $errorcode exception description identifier
* @param mixed $debuginfo debugging data to display
*/
public function __construct($errorcode, $debuginfo=null) {
parent::__construct($errorcode, 'core_plugin', '', null, print_r($debuginfo, true));
}
}
/**
* Singleton class that handles checking for available updates
*/
class available_update_checker {
/** @var available_update_checker holds the singleton instance */
protected static $singletoninstance;
/** @var null|int the timestamp of when the most recent response was fetched */
protected $recentfetch = null;
/** @var null|array the recent response from the update notification provider */
protected $recentresponse = null;
/** @var null|string the numerical version of the local Moodle code */
protected $currentversion = null;
/** @var null|string the release info of the local Moodle code */
protected $currentrelease = null;
/** @var null|string branch of the local Moodle code */
protected $currentbranch = null;
/** @var array of (string)frankestyle => (string)version list of additional plugins deployed at this site */
protected $currentplugins = array();
/**
* Direct initiation not allowed, use the factory method {@link self::instance()}
*/
protected function __construct() {
}
/**
* Sorry, this is singleton
*/
protected function __clone() {
}
/**
* Factory method for this class
*
* @return available_update_checker the singleton instance
*/
public static function instance() {
if (is_null(self::$singletoninstance)) {
self::$singletoninstance = new self();
}
return self::$singletoninstance;
}
/**
* Returns the timestamp of the last execution of {@link fetch()}
*
* @return int|null null if it has never been executed or we don't known
*/
public function get_last_timefetched() {
$this->restore_response();
if (!empty($this->recentfetch)) {
return $this->recentfetch;
} else {
return null;
}
}
/**
* Fetches the available update status from the remote site
*
* @throws available_update_checker_exception
*/
public function fetch() {
$response = $this->get_response();
$this->validate_response($response);
$this->store_response($response);
}
/**
* Returns the available update information for the given component
*
* This method returns null if the most recent response does not contain any information
* about it. The returned structure is an array of available updates for the given
* component. Each update info is an object with at least one property called
* 'version'. Other possible properties are 'release', 'maturity', 'url' and 'downloadurl'.
*
* For the 'core' component, the method returns real updates only (those with higher version).
* For all other components, the list of all known remote updates is returned and the caller
* (usually the {@link plugin_manager}) is supposed to make the actual comparison of versions.
*
* @param string $component frankenstyle
* @param array $options with supported keys 'minmaturity' and/or 'notifybuilds'
* @return null|array null or array of available_update_info objects
*/
public function get_update_info($component, array $options = array()) {
if (!isset($options['minmaturity'])) {
$options['minmaturity'] = 0;
}
if (!isset($options['notifybuilds'])) {
$options['notifybuilds'] = false;
}
if ($component == 'core') {
$this->load_current_environment();
}
$this->restore_response();
if (empty($this->recentresponse['updates'][$component])) {
return null;
}
$updates = array();
foreach ($this->recentresponse['updates'][$component] as $info) {
$update = new available_update_info($component, $info);
if (isset($update->maturity) and ($update->maturity < $options['minmaturity'])) {
continue;
}
if ($component == 'core') {
if ($update->version <= $this->currentversion) {
continue;
}
if (empty($options['notifybuilds']) and $this->is_same_release($update->release)) {
continue;
}
}
$updates[] = $update;
}
if (empty($updates)) {
return null;
}
return $updates;
}
/**
* The method being run via cron.php
*/
public function cron() {
global $CFG;
if (!$this->cron_autocheck_enabled()) {
$this->cron_mtrace('Automatic check for available updates not enabled, skipping.');
return;
}
$now = $this->cron_current_timestamp();
if ($this->cron_has_fresh_fetch($now)) {
$this->cron_mtrace('Recently fetched info about available updates is still fresh enough, skipping.');
return;
}
if ($this->cron_has_outdated_fetch($now)) {
$this->cron_mtrace('Outdated or missing info about available updates, forced fetching ... ', '');
$this->cron_execute();
return;
}
$offset = $this->cron_execution_offset();
$start = mktime(1, 0, 0, date('n', $now), date('j', $now), date('Y', $now)); // 01:00 AM today local time
if ($now > $start + $offset) {
$this->cron_mtrace('Regular daily check for available updates ... ', '');
$this->cron_execute();
return;
}
}
/// end of public API //////////////////////////////////////////////////////
/**
* Makes cURL request to get data from the remote site
*
* @return string raw request result
* @throws available_update_checker_exception
*/
protected function get_response() {
global $CFG;
require_once($CFG->libdir.'/filelib.php');
$curl = new curl(array('proxy' => true));
$response = $curl->post($this->prepare_request_url(), $this->prepare_request_params());
$curlinfo = $curl->get_info();
if ($curlinfo['http_code'] != 200) {
throw new available_update_checker_exception('err_response_http_code', $curlinfo['http_code']);
}
return $response;
}
/**
* Makes sure the response is valid, has correct API format etc.
*
* @param string $response raw response as returned by the {@link self::get_response()}
* @throws available_update_checker_exception
*/
protected function validate_response($response) {
$response = $this->decode_response($response);
if (empty($response)) {
throw new available_update_checker_exception('err_response_empty');
}
if (empty($response['status']) or $response['status'] !== 'OK') {
throw new available_update_checker_exception('err_response_status', $response['status']);
}
if (empty($response['apiver']) or $response['apiver'] !== '1.0') {
throw new available_update_checker_exception('err_response_format_version', $response['apiver']);
}
if (empty($response['forbranch']) or $response['forbranch'] !== moodle_major_version(true)) {
throw new available_update_checker_exception('err_response_target_version', $response['forbranch']);
}
}
/**
* Decodes the raw string response from the update notifications provider
*
* @param string $response as returned by {@link self::get_response()}
* @return array decoded response structure
*/
protected function decode_response($response) {
return json_decode($response, true);
}
/**
* Stores the valid fetched response for later usage
*
* This implementation uses the config_plugins table as the permanent storage.
*
* @param string $response raw valid data returned by {@link self::get_response()}
*/
protected function store_response($response) {
set_config('recentfetch', time(), 'core_plugin');
set_config('recentresponse', $response, 'core_plugin');
$this->restore_response(true);
}
/**
* Loads the most recent raw response record we have fetched
*
* After this method is called, $this->recentresponse is set to an array. If the
* array is empty, then either no data have been fetched yet or the fetched data
* do not have expected format (and thence they are ignored and a debugging
* message is displayed).
*
* This implementation uses the config_plugins table as the permanent storage.
*
* @param bool $forcereload reload even if it was already loaded
*/
protected function restore_response($forcereload = false) {
if (!$forcereload and !is_null($this->recentresponse)) {
// we already have it, nothing to do
return;
}
$config = get_config('core_plugin');
if (!empty($config->recentresponse) and !empty($config->recentfetch)) {
try {
$this->validate_response($config->recentresponse);
$this->recentfetch = $config->recentfetch;
$this->recentresponse = $this->decode_response($config->recentresponse);
} catch (available_update_checker_exception $e) {
debugging('Invalid info about available updates detected and will be ignored: '.$e->getMessage(), DEBUG_ALL);
$this->recentresponse = array();
}
} else {
$this->recentresponse = array();
}
}
/**
* Compares two raw {@link $recentresponse} records and returns the list of changed updates
*
* This method is used to populate potential update info to be sent to site admins.
*
* @param array $old
* @param array $new
* @throws available_update_checker_exception
* @return array parts of $new['updates'] that have changed
*/
protected function compare_responses(array $old, array $new) {
if (empty($new)) {
return array();
}
if (!array_key_exists('updates', $new)) {
throw new available_update_checker_exception('err_response_format');
}
if (empty($old)) {
return $new['updates'];
}
if (!array_key_exists('updates', $old)) {
throw new available_update_checker_exception('err_response_format');
}
$changes = array();
foreach ($new['updates'] as $newcomponent => $newcomponentupdates) {
if (empty($old['updates'][$newcomponent])) {
$changes[$newcomponent] = $newcomponentupdates;
continue;
}
foreach ($newcomponentupdates as $newcomponentupdate) {
$inold = false;
foreach ($old['updates'][$newcomponent] as $oldcomponentupdate) {
if ($newcomponentupdate['version'] == $oldcomponentupdate['version']) {
$inold = true;
}
}
if (!$inold) {
if (!isset($changes[$newcomponent])) {
$changes[$newcomponent] = array();
}
$changes[$newcomponent][] = $newcomponentupdate;
}
}
}
return $changes;
}
/**
* Returns the URL to send update requests to
*
* During the development or testing, you can set $CFG->alternativeupdateproviderurl
* to a custom URL that will be used. Otherwise the standard URL will be returned.
*
* @return string URL
*/
protected function prepare_request_url() {
global $CFG;
if (!empty($CFG->alternativeupdateproviderurl)) {
return $CFG->alternativeupdateproviderurl;
} else {
return 'http://download.moodle.org/api/1.0/updates.php';
}
}
/**
* Sets the properties currentversion, currentrelease, currentbranch and currentplugins
*
* @param bool $forcereload
*/
protected function load_current_environment($forcereload=false) {
global $CFG;
if (!is_null($this->currentversion) and !$forcereload) {
// nothing to do
return;
}
$version = null;
$release = null;
require($CFG->dirroot.'/version.php');
$this->currentversion = $version;
$this->currentrelease = $release;
$this->currentbranch = moodle_major_version(true);
$pluginman = plugin_manager::instance();
foreach ($pluginman->get_plugins() as $type => $plugins) {
foreach ($plugins as $plugin) {
if (!$plugin->is_standard()) {
$this->currentplugins[$plugin->component] = $plugin->versiondisk;
}
}
}
}
/**
* Returns the list of HTTP params to be sent to the updates provider URL
*
* @return array of (string)param => (string)value
*/
protected function prepare_request_params() {
global $CFG;
$this->load_current_environment();
$this->restore_response();
$params = array();
$params['format'] = 'json';
if (isset($this->recentresponse['ticket'])) {
$params['ticket'] = $this->recentresponse['ticket'];
}
if (isset($this->currentversion)) {
$params['version'] = $this->currentversion;
} else {
throw new coding_exception('Main Moodle version must be already known here');
}
if (isset($this->currentbranch)) {
$params['branch'] = $this->currentbranch;
} else {
throw new coding_exception('Moodle release must be already known here');
}
$plugins = array();
foreach ($this->currentplugins as $plugin => $version) {
$plugins[] = $plugin.'@'.$version;
}
if (!empty($plugins)) {
$params['plugins'] = implode(',', $plugins);
}
return $params;
}
/**
* Returns the current timestamp
*
* @return int the timestamp
*/
protected function cron_current_timestamp() {
return time();
}
/**
* Output cron debugging info
*
* @see mtrace()
* @param string $msg output message
* @param string $eol end of line
*/
protected function cron_mtrace($msg, $eol = PHP_EOL) {
mtrace($msg, $eol);
}
/**
* Decide if the autocheck feature is disabled in the server setting
*
* @return bool true if autocheck enabled, false if disabled
*/
protected function cron_autocheck_enabled() {
global $CFG;
if (empty($CFG->updateautocheck)) {
return false;
} else {
return true;
}
}
/**
* Decide if the recently fetched data are still fresh enough
*
* @param int $now current timestamp
* @return bool true if no need to re-fetch, false otherwise
*/
protected function cron_has_fresh_fetch($now) {
$recent = $this->get_last_timefetched();
if (empty($recent)) {
return false;
}
if ($now < $recent) {
$this->cron_mtrace('The most recent fetch is reported to be in the future, this is weird!');
return true;
}
if ($now - $recent > 24 * HOURSECS) {
return false;
}
return true;
}
/**
* Decide if the fetch is outadated or even missing
*
* @param int $now current timestamp
* @return bool false if no need to re-fetch, true otherwise
*/
protected function cron_has_outdated_fetch($now) {
$recent = $this->get_last_timefetched();
if (empty($recent)) {
return true;
}
if ($now < $recent) {
$this->cron_mtrace('The most recent fetch is reported to be in the future, this is weird!');
return false;
}
if ($now - $recent > 48 * HOURSECS) {
return true;
}
return false;
}
/**
* Returns the cron execution offset for this site
*
* The main {@link self::cron()} is supposed to run every night in some random time
* between 01:00 and 06:00 AM (local time). The exact moment is defined by so called
* execution offset, that is the amount of time after 01:00 AM. The offset value is
* initially generated randomly and then used consistently at the site. This way, the
* regular checks against the download.moodle.org server are spread in time.
*
* @return int the offset number of seconds from range 1 sec to 5 hours
*/
protected function cron_execution_offset() {
global $CFG;
if (empty($CFG->updatecronoffset)) {
set_config('updatecronoffset', rand(1, 5 * HOURSECS));
}
return $CFG->updatecronoffset;
}
/**
* Fetch available updates info and eventually send notification to site admins
*/
protected function cron_execute() {
try {
$this->restore_response();
$previous = $this->recentresponse;
$this->fetch();
$this->restore_response(true);
$current = $this->recentresponse;
$changes = $this->compare_responses($previous, $current);
$notifications = $this->cron_notifications($changes);
$this->cron_notify($notifications);
$this->cron_mtrace('done');
} catch (available_update_checker_exception $e) {
$this->cron_mtrace('FAILED!');
}
}
/**
* Given the list of changes in available updates, pick those to send to site admins
*
* @param array $changes as returned by {@link self::compare_responses()}
* @return array of available_update_info objects to send to site admins
*/
protected function cron_notifications(array $changes) {
global $CFG;
$notifications = array();
$pluginman = plugin_manager::instance();
$plugins = $pluginman->get_plugins(true);
foreach ($changes as $component => $componentchanges) {
if (empty($componentchanges)) {
continue;
}
$componentupdates = $this->get_update_info($component,
array('minmaturity' => $CFG->updateminmaturity, 'notifybuilds' => $CFG->updatenotifybuilds));
if (empty($componentupdates)) {
continue;
}
// notify only about those $componentchanges that are present in $componentupdates
// to respect the preferences
foreach ($componentchanges as $componentchange) {
foreach ($componentupdates as $componentupdate) {
if ($componentupdate->version == $componentchange['version']) {
if ($component == 'core') {
// in case of 'core' this is enough, we already know that the
// $componentupdate is a real update with higher version
$notifications[] = $componentupdate;
} else {
// use the plugin_manager to check if the reported $componentchange
// is a real update with higher version. such a real update must be
// present in the 'availableupdates' property of one of the component's
// available_update_info object
list($plugintype, $pluginname) = normalize_component($component);
if (!empty($plugins[$plugintype][$pluginname]->availableupdates)) {
foreach ($plugins[$plugintype][$pluginname]->availableupdates as $availableupdate) {
if ($availableupdate->version == $componentchange['version']) {
$notifications[] = $componentupdate;
}
}
}
}
}
}
}
}
return $notifications;
}
/**
* Sends the given notifications to site admins via messaging API
*
* @param array $notifications array of available_update_info objects to send
*/
protected function cron_notify(array $notifications) {
global $CFG;
if (empty($notifications)) {
return;
}
$admins = get_admins();
if (empty($admins)) {
return;
}
$this->cron_mtrace('sending notifications ... ', '');
$text = get_string('updatenotifications', 'core_admin') . PHP_EOL;
$html = html_writer::tag('h1', get_string('updatenotifications', 'core_admin')) . PHP_EOL;
$coreupdates = array();
$pluginupdates = array();
foreach ($notifications as $notification) {
if ($notification->component == 'core') {
$coreupdates[] = $notification;
} else {
$pluginupdates[] = $notification;
}
}
if (!empty($coreupdates)) {
$text .= PHP_EOL . get_string('updateavailable', 'core_admin') . PHP_EOL;
$html .= html_writer::tag('h2', get_string('updateavailable', 'core_admin')) . PHP_EOL;
$html .= html_writer::start_tag('ul') . PHP_EOL;
foreach ($coreupdates as $coreupdate) {
$html .= html_writer::start_tag('li');
if (isset($coreupdate->release)) {
$text .= get_string('updateavailable_release', 'core_admin', $coreupdate->release);
$html .= html_writer::tag('strong', get_string('updateavailable_release', 'core_admin', $coreupdate->release));
}
if (isset($coreupdate->version)) {
$text .= ' '.get_string('updateavailable_version', 'core_admin', $coreupdate->version);
$html .= ' '.get_string('updateavailable_version', 'core_admin', $coreupdate->version);
}
if (isset($coreupdate->maturity)) {
$text .= ' ('.get_string('maturity'.$coreupdate->maturity, 'core_admin').')';
$html .= ' ('.get_string('maturity'.$coreupdate->maturity, 'core_admin').')';
}
$text .= PHP_EOL;
$html .= html_writer::end_tag('li') . PHP_EOL;
}
$text .= PHP_EOL;
$html .= html_writer::end_tag('ul') . PHP_EOL;
$a = array('url' => $CFG->wwwroot.'/'.$CFG->admin.'/index.php');
$text .= get_string('updateavailabledetailslink', 'core_admin', $a) . PHP_EOL;
$a = array('url' => html_writer::link($CFG->wwwroot.'/'.$CFG->admin.'/index.php', $CFG->wwwroot.'/'.$CFG->admin.'/index.php'));
$html .= html_writer::tag('p', get_string('updateavailabledetailslink', 'core_admin', $a)) . PHP_EOL;
}
if (!empty($pluginupdates)) {
$text .= PHP_EOL . get_string('updateavailableforplugin', 'core_admin') . PHP_EOL;
$html .= html_writer::tag('h2', get_string('updateavailableforplugin', 'core_admin')) . PHP_EOL;
$html .= html_writer::start_tag('ul') . PHP_EOL;
foreach ($pluginupdates as $pluginupdate) {
$html .= html_writer::start_tag('li');
$text .= get_string('pluginname', $pluginupdate->component);
$html .= html_writer::tag('strong', get_string('pluginname', $pluginupdate->component));
$text .= ' ('.$pluginupdate->component.')';
$html .= ' ('.$pluginupdate->component.')';
$text .= ' '.get_string('updateavailable', 'core_plugin', $pluginupdate->version);
$html .= ' '.get_string('updateavailable', 'core_plugin', $pluginupdate->version);
$text .= PHP_EOL;
$html .= html_writer::end_tag('li') . PHP_EOL;
}
$text .= PHP_EOL;
$html .= html_writer::end_tag('ul') . PHP_EOL;
$a = array('url' => $CFG->wwwroot.'/'.$CFG->admin.'/plugins.php');
$text .= get_string('updateavailabledetailslink', 'core_admin', $a) . PHP_EOL;
$a = array('url' => html_writer::link($CFG->wwwroot.'/'.$CFG->admin.'/plugins.php', $CFG->wwwroot.'/'.$CFG->admin.'/plugins.php'));
$html .= html_writer::tag('p', get_string('updateavailabledetailslink', 'core_admin', $a)) . PHP_EOL;
}
$a = array('siteurl' => $CFG->wwwroot);
$text .= get_string('updatenotificationfooter', 'core_admin', $a) . PHP_EOL;
$a = array('siteurl' => html_writer::link($CFG->wwwroot, $CFG->wwwroot));
$html .= html_writer::tag('footer', html_writer::tag('p', get_string('updatenotificationfooter', 'core_admin', $a),
array('style' => 'font-size:smaller; color:#333;')));
$mainadmin = reset($admins);
foreach ($admins as $admin) {
$message = new stdClass();
$message->component = 'moodle';
$message->name = 'availableupdate';
$message->userfrom = $mainadmin;
$message->userto = $admin;
$message->subject = get_string('updatenotifications', 'core_admin');
$message->fullmessage = $text;
$message->fullmessageformat = FORMAT_PLAIN;
$message->fullmessagehtml = $html;
$message->smallmessage = get_string('updatenotifications', 'core_admin');
$message->notification = 1;
message_send($message);
}
}
/**
* Compare two release labels and decide if they are the same
*
* @param string $remote release info of the available update
* @param null|string $local release info of the local code, defaults to $release defined in version.php
* @return boolean true if the releases declare the same minor+major version
*/
protected function is_same_release($remote, $local=null) {
if (is_null($local)) {
$this->load_current_environment();
$local = $this->currentrelease;
}
$pattern = '/^([0-9\.\+]+)([^(]*)/';
preg_match($pattern, $remote, $remotematches);
preg_match($pattern, $local, $localmatches);
$remotematches[1] = str_replace('+', '', $remotematches[1]);
$localmatches[1] = str_replace('+', '', $localmatches[1]);
if ($remotematches[1] === $localmatches[1] and rtrim($remotematches[2]) === rtrim($localmatches[2])) {
return true;
} else {
return false;
}
}
}
/**
* Defines the structure of objects returned by {@link available_update_checker::get_update_info()}
*/
class available_update_info {
/** @var string frankenstyle component name */
public $component;
/** @var int the available version of the component */
public $version;
/** @var string|null optional release name */
public $release = null;
/** @var int|null optional maturity info, eg {@link MATURITY_STABLE} */
public $maturity = null;
/** @var string|null optional URL of a page with more info about the update */
public $url = null;
/** @var string|null optional URL of a ZIP package that can be downloaded and installed */
public $download = null;
/**
* Creates new instance of the class
*
* The $info array must provide at least the 'version' value and optionally all other
* values to populate the object's properties.
*
* @param string $name the frankenstyle component name
* @param array $info associative array with other properties
*/
public function __construct($name, array $info) {
$this->component = $name;
foreach ($info as $k => $v) {
if (property_exists('available_update_info', $k) and $k != 'component') {
$this->$k = $v;
}
}
}
}
/**
* Factory class producing required subclasses of {@link plugininfo_base}
*/
class plugininfo_default_factory {
/**
* Makes a new instance of the plugininfo class
*
* @param string $type the plugin type, eg. 'mod'
* @param string $typerootdir full path to the location of all the plugins of this type
* @param string $name the plugin name, eg. 'workshop'
* @param string $namerootdir full path to the location of the plugin
* @param string $typeclass the name of class that holds the info about the plugin
* @return plugininfo_base the instance of $typeclass
*/
public static function make($type, $typerootdir, $name, $namerootdir, $typeclass) {
$plugin = new $typeclass();
$plugin->type = $type;
$plugin->typerootdir = $typerootdir;
$plugin->name = $name;
$plugin->rootdir = $namerootdir;
$plugin->init_display_name();
$plugin->load_disk_version();
$plugin->load_db_version();
$plugin->load_required_main_version();
$plugin->init_is_standard();
return $plugin;
}
}
/**
* Base class providing access to the information about a plugin
*
* @property-read string component the component name, type_name
*/
abstract class plugininfo_base {
/** @var string the plugintype name, eg. mod, auth or workshopform */
public $type;
/** @var string full path to the location of all the plugins of this type */
public $typerootdir;
/** @var string the plugin name, eg. assignment, ldap */
public $name;
/** @var string the localized plugin name */
public $displayname;
/** @var string the plugin source, one of plugin_manager::PLUGIN_SOURCE_xxx constants */
public $source;
/** @var fullpath to the location of this plugin */
public $rootdir;
/** @var int|string the version of the plugin's source code */
public $versiondisk;
/** @var int|string the version of the installed plugin */
public $versiondb;
/** @var int|float|string required version of Moodle core */
public $versionrequires;
/** @var array other plugins that this one depends on, lazy-loaded by {@link get_other_required_plugins()} */
public $dependencies;
/** @var int number of instances of the plugin - not supported yet */
public $instances;
/** @var int order of the plugin among other plugins of the same type - not supported yet */
public $sortorder;
/** @var array|null array of {@link available_update_info} for this plugin */
public $availableupdates;
/**
* Gathers and returns the information about all plugins of the given type
*
* @param string $type the name of the plugintype, eg. mod, auth or workshopform
* @param string $typerootdir full path to the location of the plugin dir
* @param string $typeclass the name of the actually called class
* @return array of plugintype classes, indexed by the plugin name
*/
public static function get_plugins($type, $typerootdir, $typeclass) {
// get the information about plugins at the disk
$plugins = get_plugin_list($type);
$ondisk = array();
foreach ($plugins as $pluginname => $pluginrootdir) {
$ondisk[$pluginname] = plugininfo_default_factory::make($type, $typerootdir,
$pluginname, $pluginrootdir, $typeclass);
}
return $ondisk;
}
/**
* Sets {@link $displayname} property to a localized name of the plugin
*/
public function init_display_name() {
if (!get_string_manager()->string_exists('pluginname', $this->component)) {
$this->displayname = '[pluginname,' . $this->component . ']';
} else {
$this->displayname = get_string('pluginname', $this->component);
}
}
/**
* Magic method getter, redirects to read only values.
*
* @param string $name
* @return mixed
*/
public function __get($name) {
switch ($name) {
case 'component': return $this->type . '_' . $this->name;
default:
debugging('Invalid plugin property accessed! '.$name);
return null;
}
}
/**
* Return the full path name of a file within the plugin.
*
* No check is made to see if the file exists.
*
* @param string $relativepath e.g. 'version.php'.
* @return string e.g. $CFG->dirroot . '/mod/quiz/version.php'.
*/
public function full_path($relativepath) {
if (empty($this->rootdir)) {
return '';
}
return $this->rootdir . '/' . $relativepath;
}
/**
* Load the data from version.php.
*
* @return stdClass the object called $plugin defined in version.php
*/
protected function load_version_php() {
$versionfile = $this->full_path('version.php');
$plugin = new stdClass();
if (is_readable($versionfile)) {
include($versionfile);
}
return $plugin;
}
/**
* Sets {@link $versiondisk} property to a numerical value representing the
* version of the plugin's source code.
*
* If the value is null after calling this method, either the plugin
* does not use versioning (typically does not have any database
* data) or is missing from disk.
*/
public function load_disk_version() {
$plugin = $this->load_version_php();
if (isset($plugin->version)) {
$this->versiondisk = $plugin->version;
}
}
/**
* Sets {@link $versionrequires} property to a numerical value representing
* the version of Moodle core that this plugin requires.
*/
public function load_required_main_version() {
$plugin = $this->load_version_php();
if (isset($plugin->requires)) {
$this->versionrequires = $plugin->requires;
}
}
/**
* Initialise {@link $dependencies} to the list of other plugins (in any)
* that this one requires to be installed.
*/
protected function load_other_required_plugins() {
$plugin = $this->load_version_php();
if (!empty($plugin->dependencies)) {
$this->dependencies = $plugin->dependencies;
} else {
$this->dependencies = array(); // By default, no dependencies.
}
}
/**
* Get the list of other plugins that this plugin requires to be installed.
*
* @return array with keys the frankenstyle plugin name, and values either
* a version string (like '2011101700') or the constant ANY_VERSION.
*/
public function get_other_required_plugins() {
if (is_null($this->dependencies)) {
$this->load_other_required_plugins();
}
return $this->dependencies;
}
/**
* Sets {@link $versiondb} property to a numerical value representing the
* currently installed version of the plugin.
*
* If the value is null after calling this method, either the plugin
* does not use versioning (typically does not have any database
* data) or has not been installed yet.
*/
public function load_db_version() {
if ($ver = self::get_version_from_config_plugins($this->component)) {
$this->versiondb = $ver;
}
}
/**
* Sets {@link $source} property to one of plugin_manager::PLUGIN_SOURCE_xxx
* constants.
*
* If the property's value is null after calling this method, then
* the type of the plugin has not been recognized and you should throw
* an exception.
*/
public function init_is_standard() {
$standard = plugin_manager::standard_plugins_list($this->type);
if ($standard !== false) {
$standard = array_flip($standard);
if (isset($standard[$this->name])) {
$this->source = plugin_manager::PLUGIN_SOURCE_STANDARD;
} else if (!is_null($this->versiondb) and is_null($this->versiondisk)
and plugin_manager::is_deleted_standard_plugin($this->type, $this->name)) {
$this->source = plugin_manager::PLUGIN_SOURCE_STANDARD; // to be deleted
} else {
$this->source = plugin_manager::PLUGIN_SOURCE_EXTENSION;
}
}
}
/**
* Returns true if the plugin is shipped with the official distribution
* of the current Moodle version, false otherwise.
*
* @return bool
*/
public function is_standard() {
return $this->source === plugin_manager::PLUGIN_SOURCE_STANDARD;
}
/**
* Returns true if the the given Moodle version is enough to run this plugin
*
* @param string|int|double $moodleversion
* @return bool
*/
public function is_core_dependency_satisfied($moodleversion) {
if (empty($this->versionrequires)) {
return true;
} else {
return (double)$this->versionrequires <= (double)$moodleversion;
}
}
/**
* Returns the status of the plugin
*
* @return string one of plugin_manager::PLUGIN_STATUS_xxx constants
*/
public function get_status() {
if (is_null($this->versiondb) and is_null($this->versiondisk)) {
return plugin_manager::PLUGIN_STATUS_NODB;
} else if (is_null($this->versiondb) and !is_null($this->versiondisk)) {
return plugin_manager::PLUGIN_STATUS_NEW;
} else if (!is_null($this->versiondb) and is_null($this->versiondisk)) {
if (plugin_manager::is_deleted_standard_plugin($this->type, $this->name)) {
return plugin_manager::PLUGIN_STATUS_DELETE;
} else {
return plugin_manager::PLUGIN_STATUS_MISSING;
}
} else if ((string)$this->versiondb === (string)$this->versiondisk) {
return plugin_manager::PLUGIN_STATUS_UPTODATE;
} else if ($this->versiondb < $this->versiondisk) {
return plugin_manager::PLUGIN_STATUS_UPGRADE;
} else if ($this->versiondb > $this->versiondisk) {
return plugin_manager::PLUGIN_STATUS_DOWNGRADE;
} else {
// $version = pi(); and similar funny jokes - hopefully Donald E. Knuth will never contribute to Moodle ;-)
throw new coding_exception('Unable to determine plugin state, check the plugin versions');
}
}
/**
* Returns the information about plugin availability
*
* True means that the plugin is enabled. False means that the plugin is
* disabled. Null means that the information is not available, or the
* plugin does not support configurable availability or the availability
* can not be changed.
*
* @return null|bool
*/
public function is_enabled() {
return null;
}
/**
* Populates the property {@link $availableupdates} with the information provided by
* available update checker
*
* @param available_update_checker $provider the class providing the available update info
*/
public function check_available_updates(available_update_checker $provider) {
global $CFG;
if (isset($CFG->updateminmaturity)) {
$minmaturity = $CFG->updateminmaturity;
} else {
// this can happen during the very first upgrade to 2.3
$minmaturity = MATURITY_STABLE;
}
$this->availableupdates = $provider->get_update_info($this->component,
array('minmaturity' => $minmaturity));
}
/**
* If there are updates for this plugin available, returns them.
*
* Returns array of {@link available_update_info} objects, if some update
* is available. Returns null if there is no update available or if the update
* availability is unknown.
*
* @return array|null
*/
public function available_updates() {
if (empty($this->availableupdates) or !is_array($this->availableupdates)) {
return null;
}
$updates = array();
foreach ($this->availableupdates as $availableupdate) {
if ($availableupdate->version > $this->versiondisk) {
$updates[] = $availableupdate;
}
}
if (empty($updates)) {
return null;
}
return $updates;
}
/**
* Returns the URL of the plugin settings screen
*
* Null value means that the plugin either does not have the settings screen
* or its location is not available via this library.
*
* @return null|moodle_url
*/
public function get_settings_url() {
return null;
}
/**
* Returns the URL of the screen where this plugin can be uninstalled
*
* Visiting that URL must be safe, that is a manual confirmation is needed
* for actual uninstallation of the plugin. Null value means that the
* plugin either does not support uninstallation, or does not require any
* database cleanup or the location of the screen is not available via this
* library.
*
* @return null|moodle_url
*/
public function get_uninstall_url() {
return null;
}
/**
* Returns relative directory of the plugin with heading '/'
*
* @return string
*/
public function get_dir() {
global $CFG;
return substr($this->rootdir, strlen($CFG->dirroot));
}
/**
* Provides access to plugin versions from {config_plugins}
*
* @param string $plugin plugin name
* @param double $disablecache optional, defaults to false
* @return int|false the stored value or false if not found
*/
protected function get_version_from_config_plugins($plugin, $disablecache=false) {
global $DB;
static $pluginversions = null;
if (is_null($pluginversions) or $disablecache) {
try {
$pluginversions = $DB->get_records_menu('config_plugins', array('name' => 'version'), 'plugin', 'plugin,value');
} catch (dml_exception $e) {
// before install
$pluginversions = array();
}
}
if (!array_key_exists($plugin, $pluginversions)) {
return false;
}
return $pluginversions[$plugin];
}
}
/**
* General class for all plugin types that do not have their own class
*/
class plugininfo_general extends plugininfo_base {
}
/**
* Class for page side blocks
*/
class plugininfo_block extends plugininfo_base {
public static function get_plugins($type, $typerootdir, $typeclass) {
// get the information about blocks at the disk
$blocks = parent::get_plugins($type, $typerootdir, $typeclass);
// add blocks missing from disk
$blocksinfo = self::get_blocks_info();
foreach ($blocksinfo as $blockname => $blockinfo) {
if (isset($blocks[$blockname])) {
continue;
}
$plugin = new $typeclass();
$plugin->type = $type;
$plugin->typerootdir = $typerootdir;
$plugin->name = $blockname;
$plugin->rootdir = null;
$plugin->displayname = $blockname;
$plugin->versiondb = $blockinfo->version;
$plugin->init_is_standard();
$blocks[$blockname] = $plugin;
}
return $blocks;
}
public function init_display_name() {
if (get_string_manager()->string_exists('pluginname', 'block_' . $this->name)) {
$this->displayname = get_string('pluginname', 'block_' . $this->name);
} else if (($block = block_instance($this->name)) !== false) {
$this->displayname = $block->get_title();
} else {
parent::init_display_name();
}
}
public function load_db_version() {
global $DB;
$blocksinfo = self::get_blocks_info();
if (isset($blocksinfo[$this->name]->version)) {
$this->versiondb = $blocksinfo[$this->name]->version;
}
}
public function is_enabled() {
$blocksinfo = self::get_blocks_info();
if (isset($blocksinfo[$this->name]->visible)) {
if ($blocksinfo[$this->name]->visible) {
return true;
} else {
return false;
}
} else {
return parent::is_enabled();
}
}
public function get_settings_url() {
if (($block = block_instance($this->name)) === false) {
return parent::get_settings_url();
} else if ($block->has_config()) {
if (file_exists($this->full_path('settings.php'))) {
return new moodle_url('/admin/settings.php', array('section' => 'blocksetting' . $this->name));
} else {
$blocksinfo = self::get_blocks_info();
return new moodle_url('/admin/block.php', array('block' => $blocksinfo[$this->name]->id));
}
} else {
return parent::get_settings_url();
}
}
public function get_uninstall_url() {
$blocksinfo = self::get_blocks_info();
return new moodle_url('/admin/blocks.php', array('delete' => $blocksinfo[$this->name]->id, 'sesskey' => sesskey()));
}
/**
* Provides access to the records in {block} table
*
* @param bool $disablecache do not use internal static cache
* @return array array of stdClasses
*/
protected static function get_blocks_info($disablecache=false) {
global $DB;
static $blocksinfocache = null;
if (is_null($blocksinfocache) or $disablecache) {
try {
$blocksinfocache = $DB->get_records('block', null, 'name', 'name,id,version,visible');
} catch (dml_exception $e) {
// before install
$blocksinfocache = array();
}
}
return $blocksinfocache;
}
}
/**
* Class for text filters
*/
class plugininfo_filter extends plugininfo_base {
public static function get_plugins($type, $typerootdir, $typeclass) {
global $CFG, $DB;
$filters = array();
// get the list of filters from both /filter and /mod location
$installed = filter_get_all_installed();
foreach ($installed as $filterlegacyname => $displayname) {
$plugin = new $typeclass();
$plugin->type = $type;
$plugin->typerootdir = $typerootdir;
$plugin->name = self::normalize_legacy_name($filterlegacyname);
$plugin->rootdir = $CFG->dirroot . '/' . $filterlegacyname;
$plugin->displayname = $displayname;
$plugin->load_disk_version();
$plugin->load_db_version();
$plugin->load_required_main_version();
$plugin->init_is_standard();
$filters[$plugin->name] = $plugin;
}
$globalstates = self::get_global_states();
if ($DB->get_manager()->table_exists('filter_active')) {
// if we're upgrading from 1.9, the table does not exist yet
// if it does, make sure that all installed filters are registered
$needsreload = false;
foreach (array_keys($installed) as $filterlegacyname) {
if (!isset($globalstates[self::normalize_legacy_name($filterlegacyname)])) {
filter_set_global_state($filterlegacyname, TEXTFILTER_DISABLED);
$needsreload = true;
}
}
if ($needsreload) {
$globalstates = self::get_global_states(true);
}
}
// make sure that all registered filters are installed, just in case
foreach ($globalstates as $name => $info) {
if (!isset($filters[$name])) {
// oops, there is a record in filter_active but the filter is not installed
$plugin = new $typeclass();
$plugin->type = $type;
$plugin->typerootdir = $typerootdir;
$plugin->name = $name;
$plugin->rootdir = $CFG->dirroot . '/' . $info->legacyname;
$plugin->displayname = $info->legacyname;
$plugin->load_db_version();
if (is_null($plugin->versiondb)) {
// this is a hack to stimulate 'Missing from disk' error
// because $plugin->versiondisk will be null !== false
$plugin->versiondb = false;
}
$filters[$plugin->name] = $plugin;
}
}
return $filters;
}
public function init_display_name() {
// do nothing, the name is set in self::get_plugins()
}
/**
* @see load_version_php()
*/
protected function load_version_php() {
if (strpos($this->name, 'mod_') === 0) {
// filters bundled with modules do not have a version.php and so
// do not provide their own versioning information.
return new stdClass();
}
return parent::load_version_php();
}
public function is_enabled() {
$globalstates = self::get_global_states();
foreach ($globalstates as $filterlegacyname => $info) {
$name = self::normalize_legacy_name($filterlegacyname);
if ($name === $this->name) {
if ($info->active == TEXTFILTER_DISABLED) {
return false;
} else {
// it may be 'On' or 'Off, but available'
return null;
}
}
}
return null;
}
public function get_settings_url() {
$globalstates = self::get_global_states();
$legacyname = $globalstates[$this->name]->legacyname;
if (filter_has_global_settings($legacyname)) {
return new moodle_url('/admin/settings.php', array('section' => 'filtersetting' . str_replace('/', '', $legacyname)));
} else {
return null;
}
}
public function get_uninstall_url() {
if (strpos($this->name, 'mod_') === 0) {
return null;
} else {
$globalstates = self::get_global_states();
$legacyname = $globalstates[$this->name]->legacyname;
return new moodle_url('/admin/filters.php', array('sesskey' => sesskey(), 'filterpath' => $legacyname, 'action' => 'delete'));
}
}
/**
* Convert legacy filter names like 'filter/foo' or 'mod/bar' into frankenstyle
*
* @param string $legacyfiltername legacy filter name
* @return string frankenstyle-like name
*/
protected static function normalize_legacy_name($legacyfiltername) {
$name = str_replace('/', '_', $legacyfiltername);
if (strpos($name, 'filter_') === 0) {
$name = substr($name, 7);
if (empty($name)) {
throw new coding_exception('Unable to determine filter name: ' . $legacyfiltername);
}
}
return $name;
}
/**
* Provides access to the results of {@link filter_get_global_states()}
* but indexed by the normalized filter name
*
* The legacy filter name is available as ->legacyname property.
*
* @param bool $disablecache
* @return array
*/
protected static function get_global_states($disablecache=false) {
global $DB;
static $globalstatescache = null;
if ($disablecache or is_null($globalstatescache)) {
if (!$DB->get_manager()->table_exists('filter_active')) {
// we're upgrading from 1.9 and the table used by {@link filter_get_global_states()}
// does not exist yet
$globalstatescache = array();
} else {
foreach (filter_get_global_states() as $legacyname => $info) {
$name = self::normalize_legacy_name($legacyname);
$filterinfo = new stdClass();
$filterinfo->legacyname = $legacyname;
$filterinfo->active = $info->active;
$filterinfo->sortorder = $info->sortorder;
$globalstatescache[$name] = $filterinfo;
}
}
}
return $globalstatescache;
}
}
/**
* Class for activity modules
*/
class plugininfo_mod extends plugininfo_base {
public static function get_plugins($type, $typerootdir, $typeclass) {
// get the information about plugins at the disk
$modules = parent::get_plugins($type, $typerootdir, $typeclass);
// add modules missing from disk
$modulesinfo = self::get_modules_info();
foreach ($modulesinfo as $modulename => $moduleinfo) {
if (isset($modules[$modulename])) {
continue;
}
$plugin = new $typeclass();
$plugin->type = $type;
$plugin->typerootdir = $typerootdir;
$plugin->name = $modulename;
$plugin->rootdir = null;
$plugin->displayname = $modulename;
$plugin->versiondb = $moduleinfo->version;
$plugin->init_is_standard();
$modules[$modulename] = $plugin;
}
return $modules;
}
public function init_display_name() {
if (get_string_manager()->string_exists('pluginname', $this->component)) {
$this->displayname = get_string('pluginname', $this->component);
} else {
$this->displayname = get_string('modulename', $this->component);
}
}
/**
* Load the data from version.php.
* @return object the data object defined in version.php.
*/
protected function load_version_php() {
$versionfile = $this->full_path('version.php');
$module = new stdClass();
if (is_readable($versionfile)) {
include($versionfile);
}
return $module;
}
public function load_db_version() {
global $DB;
$modulesinfo = self::get_modules_info();
if (isset($modulesinfo[$this->name]->version)) {
$this->versiondb = $modulesinfo[$this->name]->version;
}
}
public function is_enabled() {
$modulesinfo = self::get_modules_info();
if (isset($modulesinfo[$this->name]->visible)) {
if ($modulesinfo[$this->name]->visible) {
return true;
} else {
return false;
}
} else {
return parent::is_enabled();
}
}
public function get_settings_url() {
if (file_exists($this->full_path('settings.php')) or file_exists($this->full_path('settingstree.php'))) {
return new moodle_url('/admin/settings.php', array('section' => 'modsetting' . $this->name));
} else {
return parent::get_settings_url();
}
}
public function get_uninstall_url() {
if ($this->name !== 'forum') {
return new moodle_url('/admin/modules.php', array('delete' => $this->name, 'sesskey' => sesskey()));
} else {
return null;
}
}
/**
* Provides access to the records in {modules} table
*
* @param bool $disablecache do not use internal static cache
* @return array array of stdClasses
*/
protected static function get_modules_info($disablecache=false) {
global $DB;
static $modulesinfocache = null;
if (is_null($modulesinfocache) or $disablecache) {
try {
$modulesinfocache = $DB->get_records('modules', null, 'name', 'name,id,version,visible');
} catch (dml_exception $e) {
// before install
$modulesinfocache = array();
}
}
return $modulesinfocache;
}
}
/**
* Class for question behaviours.
*/
class plugininfo_qbehaviour extends plugininfo_base {
public function get_uninstall_url() {
return new moodle_url('/admin/qbehaviours.php',
array('delete' => $this->name, 'sesskey' => sesskey()));
}
}
/**
* Class for question types
*/
class plugininfo_qtype extends plugininfo_base {
public function get_uninstall_url() {
return new moodle_url('/admin/qtypes.php',
array('delete' => $this->name, 'sesskey' => sesskey()));
}
}
/**
* Class for authentication plugins
*/
class plugininfo_auth extends plugininfo_base {
public function is_enabled() {
global $CFG;
/** @var null|array list of enabled authentication plugins */
static $enabled = null;
if (in_array($this->name, array('nologin', 'manual'))) {
// these two are always enabled and can't be disabled
return null;
}
if (is_null($enabled)) {
$enabled = array_flip(explode(',', $CFG->auth));
}
return isset($enabled[$this->name]);
}
public function get_settings_url() {
if (file_exists($this->full_path('settings.php'))) {
return new moodle_url('/admin/settings.php', array('section' => 'authsetting' . $this->name));
} else {
return new moodle_url('/admin/auth_config.php', array('auth' => $this->name));
}
}
}
/**
* Class for enrolment plugins
*/
class plugininfo_enrol extends plugininfo_base {
public function is_enabled() {
global $CFG;
/** @var null|array list of enabled enrolment plugins */
static $enabled = null;
// We do not actually need whole enrolment classes here so we do not call
// {@link enrol_get_plugins()}. Note that this may produce slightly different
// results, for example if the enrolment plugin does not contain lib.php
// but it is listed in $CFG->enrol_plugins_enabled
if (is_null($enabled)) {
$enabled = array_flip(explode(',', $CFG->enrol_plugins_enabled));
}
return isset($enabled[$this->name]);
}
public function get_settings_url() {
if ($this->is_enabled() or file_exists($this->full_path('settings.php'))) {
return new moodle_url('/admin/settings.php', array('section' => 'enrolsettings' . $this->name));
} else {
return parent::get_settings_url();
}
}
public function get_uninstall_url() {
return new moodle_url('/admin/enrol.php', array('action' => 'uninstall', 'enrol' => $this->name, 'sesskey' => sesskey()));
}
}
/**
* Class for messaging processors
*/
class plugininfo_message extends plugininfo_base {
public function get_settings_url() {
$processors = get_message_processors();
if (isset($processors[$this->name])) {
$processor = $processors[$this->name];
if ($processor->available && $processor->hassettings) {
return new moodle_url('settings.php', array('section' => 'messagesetting'.$processor->name));
}
}
return parent::get_settings_url();
}
/**
* @see plugintype_interface::is_enabled()
*/
public function is_enabled() {
$processors = get_message_processors();
if (isset($processors[$this->name])) {
return $processors[$this->name]->configured && $processors[$this->name]->enabled;
} else {
return parent::is_enabled();
}
}
/**
* @see plugintype_interface::get_uninstall_url()
*/
public function get_uninstall_url() {
$processors = get_message_processors();
if (isset($processors[$this->name])) {
return new moodle_url('message.php', array('uninstall' => $processors[$this->name]->id, 'sesskey' => sesskey()));
} else {
return parent::get_uninstall_url();
}
}
}
/**
* Class for repositories
*/
class plugininfo_repository extends plugininfo_base {
public function is_enabled() {
$enabled = self::get_enabled_repositories();
return isset($enabled[$this->name]);
}
public function get_settings_url() {
if ($this->is_enabled()) {
return new moodle_url('/admin/repository.php', array('sesskey' => sesskey(), 'action' => 'edit', 'repos' => $this->name));
} else {
return parent::get_settings_url();
}
}
/**
* Provides access to the records in {repository} table
*
* @param bool $disablecache do not use internal static cache
* @return array array of stdClasses
*/
protected static function get_enabled_repositories($disablecache=false) {
global $DB;
static $repositories = null;
if (is_null($repositories) or $disablecache) {
$repositories = $DB->get_records('repository', null, 'type', 'type,visible,sortorder');
}
return $repositories;
}
}
/**
* Class for portfolios
*/
class plugininfo_portfolio extends plugininfo_base {
public function is_enabled() {
$enabled = self::get_enabled_portfolios();
return isset($enabled[$this->name]);
}
/**
* Provides access to the records in {portfolio_instance} table
*
* @param bool $disablecache do not use internal static cache
* @return array array of stdClasses
*/
protected static function get_enabled_portfolios($disablecache=false) {
global $DB;
static $portfolios = null;
if (is_null($portfolios) or $disablecache) {
$portfolios = array();
$instances = $DB->get_recordset('portfolio_instance', null, 'plugin');
foreach ($instances as $instance) {
if (isset($portfolios[$instance->plugin])) {
if ($instance->visible) {
$portfolios[$instance->plugin]->visible = $instance->visible;
}
} else {
$portfolios[$instance->plugin] = $instance;
}
}
}
return $portfolios;
}
}
/**
* Class for themes
*/
class plugininfo_theme extends plugininfo_base {
public function is_enabled() {
global $CFG;
if ((!empty($CFG->theme) and $CFG->theme === $this->name) or
(!empty($CFG->themelegacy) and $CFG->themelegacy === $this->name)) {
return true;
} else {
return parent::is_enabled();
}
}
}
/**
* Class representing an MNet service
*/
class plugininfo_mnetservice extends plugininfo_base {
public function is_enabled() {
global $CFG;
if (empty($CFG->mnet_dispatcher_mode) || $CFG->mnet_dispatcher_mode !== 'strict') {
return false;
} else {
return parent::is_enabled();
}
}
}
/**
* Class for admin tool plugins
*/
class plugininfo_tool extends plugininfo_base {
public function get_uninstall_url() {
return new moodle_url('/admin/tools.php', array('delete' => $this->name, 'sesskey' => sesskey()));
}
}
/**
* Class for admin tool plugins
*/
class plugininfo_report extends plugininfo_base {
public function get_uninstall_url() {
return new moodle_url('/admin/reports.php', array('delete' => $this->name, 'sesskey' => sesskey()));
}
}
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