pluginAbsolutePath = $pluginFile;
$this->pluginFile = plugin_basename($this->pluginAbsolutePath);
$this->muPluginFile = $muPluginFile;
//If no slug is specified, use the name of the main plugin file as the slug.
//For example, 'my-cool-plugin/cool-plugin.php' becomes 'cool-plugin'.
if ( empty($slug) ){
$slug = basename($this->pluginFile, '.php');
}
//Plugin slugs must be unique.
$slugCheckFilter = 'puc_is_slug_in_use-' . $this->slug;
$slugUsedBy = apply_filters($slugCheckFilter, false);
if ( $slugUsedBy ) {
$this->triggerError(sprintf(
'Plugin slug "%s" is already in use by %s. Slugs must be unique.',
htmlentities($this->slug),
htmlentities($slugUsedBy)
), E_USER_ERROR);
}
add_filter($slugCheckFilter, array($this, 'getAbsolutePath'));
//Backwards compatibility: If the plugin is a mu-plugin but no $muPluginFile is specified, assume
//it's the same as $pluginFile given that it's not in a subdirectory (WP only looks in the base dir).
if ( (strpbrk($this->pluginFile, '/\\') === false) && $this->isUnknownMuPlugin() ) {
$this->muPluginFile = $this->pluginFile;
}
parent::__construct($metadataUrl, dirname($this->pluginFile), $slug, $checkPeriod, $optionName);
}
/**
* Create an instance of the scheduler.
*
* @param int $checkPeriod
* @return Puc_v4p1_Scheduler
*/
protected function createScheduler($checkPeriod) {
$scheduler = new Puc_v4p1_Scheduler($this, $checkPeriod, array('load-plugins.php'));
register_deactivation_hook($this->pluginFile, array($scheduler, 'removeUpdaterCron'));
return $scheduler;
}
/**
* Install the hooks required to run periodic update checks and inject update info
* into WP data structures.
*
* @return void
*/
protected function installHooks(){
//Override requests for plugin information
add_filter('plugins_api', array($this, 'injectInfo'), 20, 3);
add_filter('plugin_row_meta', array($this, 'addCheckForUpdatesLink'), 10, 2);
add_action('admin_init', array($this, 'handleManualCheck'));
add_action('all_admin_notices', array($this, 'displayManualCheckResult'));
//Clear the version number cache when something - anything - is upgraded or WP clears the update cache.
add_filter('upgrader_post_install', array($this, 'clearCachedVersion'));
add_action('delete_site_transient_update_plugins', array($this, 'clearCachedVersion'));
parent::installHooks();
}
/**
* Retrieve plugin info from the configured API endpoint.
*
* @uses wp_remote_get()
*
* @param array $queryArgs Additional query arguments to append to the request. Optional.
* @return Puc_v4p1_Plugin_Info
*/
public function requestInfo($queryArgs = array()) {
list($pluginInfo, $result) = $this->requestMetadata('Puc_v4p1_Plugin_Info', 'request_info', $queryArgs);
if ( $pluginInfo !== null ) {
/** @var Puc_v4p1_Plugin_Info $pluginInfo */
$pluginInfo->filename = $this->pluginFile;
$pluginInfo->slug = $this->slug;
}
$pluginInfo = apply_filters($this->getUniqueName('request_info_result'), $pluginInfo, $result);
return $pluginInfo;
}
/**
* Retrieve the latest update (if any) from the configured API endpoint.
*
* @uses PluginUpdateChecker::requestInfo()
*
* @return Puc_v4p1_Update|null An instance of Plugin_Update, or NULL when no updates are available.
*/
public function requestUpdate() {
//For the sake of simplicity, this function just calls requestInfo()
//and transforms the result accordingly.
$pluginInfo = $this->requestInfo(array('checking_for_updates' => '1'));
if ( $pluginInfo == null ){
return null;
}
$update = Puc_v4p1_Plugin_Update::fromPluginInfo($pluginInfo);
$update = $this->filterUpdateResult($update);
return $update;
}
/**
* Get the currently installed version of the plugin.
*
* @return string Version number.
*/
public function getInstalledVersion(){
if ( isset($this->cachedInstalledVersion) ) {
return $this->cachedInstalledVersion;
}
$pluginHeader = $this->getPluginHeader();
if ( isset($pluginHeader['Version']) ) {
$this->cachedInstalledVersion = $pluginHeader['Version'];
return $pluginHeader['Version'];
} else {
//This can happen if the filename points to something that is not a plugin.
$this->triggerError(
sprintf(
"Can't to read the Version header for '%s'. The filename is incorrect or is not a plugin.",
$this->pluginFile
),
E_USER_WARNING
);
return null;
}
}
/**
* Get plugin's metadata from its file header.
*
* @return array
*/
protected function getPluginHeader() {
if ( !is_file($this->pluginAbsolutePath) ) {
//This can happen if the plugin filename is wrong.
$this->triggerError(
sprintf(
"Can't to read the plugin header for '%s'. The file does not exist.",
$this->pluginFile
),
E_USER_WARNING
);
return array();
}
if ( !function_exists('get_plugin_data') ){
/** @noinspection PhpIncludeInspection */
require_once( ABSPATH . '/wp-admin/includes/plugin.php' );
}
return get_plugin_data($this->pluginAbsolutePath, false, false);
}
/**
* @return array
*/
protected function getHeaderNames() {
return array(
'Name' => 'Plugin Name',
'PluginURI' => 'Plugin URI',
'Version' => 'Version',
'Description' => 'Description',
'Author' => 'Author',
'AuthorURI' => 'Author URI',
'TextDomain' => 'Text Domain',
'DomainPath' => 'Domain Path',
'Network' => 'Network',
//The newest WordPress version that this plugin requires or has been tested with.
//We support several different formats for compatibility with other libraries.
'Tested WP' => 'Tested WP',
'Requires WP' => 'Requires WP',
'Tested up to' => 'Tested up to',
'Requires at least' => 'Requires at least',
);
}
/**
* Intercept plugins_api() calls that request information about our plugin and
* use the configured API endpoint to satisfy them.
*
* @see plugins_api()
*
* @param mixed $result
* @param string $action
* @param array|object $args
* @return mixed
*/
public function injectInfo($result, $action = null, $args = null){
$relevant = ($action == 'plugin_information') && isset($args->slug) && (
($args->slug == $this->slug) || ($args->slug == dirname($this->pluginFile))
);
if ( !$relevant ) {
return $result;
}
$pluginInfo = $this->requestInfo();
$pluginInfo = apply_filters($this->getUniqueName('pre_inject_info'), $pluginInfo);
if ( $pluginInfo ) {
return $pluginInfo->toWpFormat();
}
return $result;
}
protected function shouldShowUpdates() {
//No update notifications for mu-plugins unless explicitly enabled. The MU plugin file
//is usually different from the main plugin file so the update wouldn't show up properly anyway.
return !$this->isUnknownMuPlugin();
}
/**
* @param stdClass|null $updates
* @param stdClass $updateToAdd
* @return stdClass
*/
protected function addUpdateToList($updates, $updateToAdd) {
if ( $this->isMuPlugin() ) {
//WP does not support automatic update installation for mu-plugins, but we can
//still display a notice.
$updateToAdd->package = null;
}
return parent::addUpdateToList($updates, $updateToAdd);
}
/**
* @param stdClass|null $updates
* @return stdClass|null
*/
protected function removeUpdateFromList($updates) {
$updates = parent::removeUpdateFromList($updates);
if ( !empty($this->muPluginFile) && isset($updates, $updates->response) ) {
unset($updates->response[$this->muPluginFile]);
}
return $updates;
}
/**
* For plugins, the update array is indexed by the plugin filename relative to the "plugins"
* directory. Example: "plugin-name/plugin.php".
*
* @return string
*/
protected function getUpdateListKey() {
if ( $this->isMuPlugin() ) {
return $this->muPluginFile;
}
return $this->pluginFile;
}
/**
* Alias for isBeingUpgraded().
*
* @deprecated
* @param WP_Upgrader|null $upgrader The upgrader that's performing the current update.
* @return bool
*/
public function isPluginBeingUpgraded($upgrader = null) {
return $this->isBeingUpgraded($upgrader);
}
/**
* Is there an update being installed for this plugin, right now?
*
* @param WP_Upgrader|null $upgrader
* @return bool
*/
public function isBeingUpgraded($upgrader = null) {
return $this->upgraderStatus->isPluginBeingUpgraded($this->pluginFile, $upgrader);
}
/**
* Get the details of the currently available update, if any.
*
* If no updates are available, or if the last known update version is below or equal
* to the currently installed version, this method will return NULL.
*
* Uses cached update data. To retrieve update information straight from
* the metadata URL, call requestUpdate() instead.
*
* @return Puc_v4p1_Plugin_Update|null
*/
public function getUpdate() {
$update = parent::getUpdate();
if ( isset($update) ) {
/** @var Puc_v4p1_Plugin_Update $update */
$update->filename = $this->pluginFile;
}
return $update;
}
/**
* Add a "Check for updates" link to the plugin row in the "Plugins" page. By default,
* the new link will appear after the "Visit plugin site" link.
*
* You can change the link text by using the "puc_manual_check_link-$slug" filter.
* Returning an empty string from the filter will disable the link.
*
* @param array $pluginMeta Array of meta links.
* @param string $pluginFile
* @return array
*/
public function addCheckForUpdatesLink($pluginMeta, $pluginFile) {
$isRelevant = ($pluginFile == $this->pluginFile)
|| (!empty($this->muPluginFile) && $pluginFile == $this->muPluginFile);
if ( $isRelevant && $this->userCanInstallUpdates() ) {
$linkUrl = wp_nonce_url(
add_query_arg(
array(
'puc_check_for_updates' => 1,
'puc_slug' => $this->slug,
),
self_admin_url('plugins.php')
),
'puc_check_for_updates'
);
$linkText = apply_filters(
$this->getUniqueName('manual_check_link'),
__('Check for updates', 'plugin-update-checker')
);
if ( !empty($linkText) ) {
/** @noinspection HtmlUnknownTarget */
$pluginMeta[] = sprintf('%s', esc_attr($linkUrl), $linkText);
}
}
return $pluginMeta;
}
/**
* Check for updates when the user clicks the "Check for updates" link.
* @see self::addCheckForUpdatesLink()
*
* @return void
*/
public function handleManualCheck() {
$shouldCheck =
isset($_GET['puc_check_for_updates'], $_GET['puc_slug'])
&& $_GET['puc_slug'] == $this->slug
&& $this->userCanInstallUpdates()
&& check_admin_referer('puc_check_for_updates');
if ( $shouldCheck ) {
$update = $this->checkForUpdates();
$status = ($update === null) ? 'no_update' : 'update_available';
wp_redirect(add_query_arg(
array(
'puc_update_check_result' => $status,
'puc_slug' => $this->slug,
),
self_admin_url('plugins.php')
));
}
}
/**
* Display the results of a manual update check.
* @see self::handleManualCheck()
*
* You can change the result message by using the "puc_manual_check_message-$slug" filter.
*/
public function displayManualCheckResult() {
if ( isset($_GET['puc_update_check_result'], $_GET['puc_slug']) && ($_GET['puc_slug'] == $this->slug) ) {
$status = strval($_GET['puc_update_check_result']);
$title = $this->getPluginTitle();
if ( $status == 'no_update' ) {
$message = sprintf(_x('The %s plugin is up to date.', 'the plugin title', 'plugin-update-checker'), $title);
} else if ( $status == 'update_available' ) {
$message = sprintf(_x('A new version of the %s plugin is available.', 'the plugin title', 'plugin-update-checker'), $title);
} else {
$message = sprintf(__('Unknown update checker status "%s"', 'plugin-update-checker'), htmlentities($status));
}
printf(
'',
apply_filters($this->getUniqueName('manual_check_message'), $message, $status)
);
}
}
/**
* Get the translated plugin title.
*
* @return string
*/
protected function getPluginTitle() {
$title = '';
$header = $this->getPluginHeader();
if ( $header && !empty($header['Name']) && isset($header['TextDomain']) ) {
$title = translate($header['Name'], $header['TextDomain']);
}
return $title;
}
/**
* Check if the current user has the required permissions to install updates.
*
* @return bool
*/
public function userCanInstallUpdates() {
return current_user_can('update_plugins');
}
/**
* Check if the plugin file is inside the mu-plugins directory.
*
* @return bool
*/
protected function isMuPlugin() {
static $cachedResult = null;
if ( $cachedResult === null ) {
//Convert both paths to the canonical form before comparison.
$muPluginDir = realpath(WPMU_PLUGIN_DIR);
$pluginPath = realpath($this->pluginAbsolutePath);
$cachedResult = (strpos($pluginPath, $muPluginDir) === 0);
}
return $cachedResult;
}
/**
* MU plugins are partially supported, but only when we know which file in mu-plugins
* corresponds to this plugin.
*
* @return bool
*/
protected function isUnknownMuPlugin() {
return empty($this->muPluginFile) && $this->isMuPlugin();
}
/**
* Clear the cached plugin version. This method can be set up as a filter (hook) and will
* return the filter argument unmodified.
*
* @param mixed $filterArgument
* @return mixed
*/
public function clearCachedVersion($filterArgument = null) {
$this->cachedInstalledVersion = null;
return $filterArgument;
}
/**
* Get absolute path to the main plugin file.
*
* @return string
*/
public function getAbsolutePath() {
return $this->pluginAbsolutePath;
}
/**
* Register a callback for filtering query arguments.
*
* The callback function should take one argument - an associative array of query arguments.
* It should return a modified array of query arguments.
*
* @uses add_filter() This method is a convenience wrapper for add_filter().
*
* @param callable $callback
* @return void
*/
public function addQueryArgFilter($callback){
$this->addFilter('request_info_query_args', $callback);
}
/**
* Register a callback for filtering arguments passed to wp_remote_get().
*
* The callback function should take one argument - an associative array of arguments -
* and return a modified array or arguments. See the WP documentation on wp_remote_get()
* for details on what arguments are available and how they work.
*
* @uses add_filter() This method is a convenience wrapper for add_filter().
*
* @param callable $callback
* @return void
*/
public function addHttpRequestArgFilter($callback) {
$this->addFilter('request_info_options', $callback);
}
/**
* Register a callback for filtering the plugin info retrieved from the external API.
*
* The callback function should take two arguments. If the plugin info was retrieved
* successfully, the first argument passed will be an instance of PluginInfo. Otherwise,
* it will be NULL. The second argument will be the corresponding return value of
* wp_remote_get (see WP docs for details).
*
* The callback function should return a new or modified instance of PluginInfo or NULL.
*
* @uses add_filter() This method is a convenience wrapper for add_filter().
*
* @param callable $callback
* @return void
*/
public function addResultFilter($callback) {
$this->addFilter('request_info_result', $callback, 10, 2);
}
protected function createDebugBarExtension() {
return new Puc_v4p1_DebugBar_PluginExtension($this);
}
}
endif;