Current File : /var/www/knwn/wp-content/plugins/wpsynchro/includes/Updater/Puc/v4p9/UpdateChecker.php
<?php
if ( !class_exists('Puc_v4p9_UpdateChecker', false) ):
abstract class Puc_v4p9_UpdateChecker {
protected $filterSuffix = '';
protected $updateTransient = '';
protected $translationType = ''; //"plugin" or "theme".
/**
* Set to TRUE to enable error reporting. Errors are raised using trigger_error()
* and should be logged to the standard PHP error log.
* @var bool
*/
public $debugMode = null;
/**
* @var string Where to store the update info.
*/
public $optionName = '';
/**
* @var string The URL of the metadata file.
*/
public $metadataUrl = '';
/**
* @var string Plugin or theme directory name.
*/
public $directoryName = '';
/**
* @var string The slug that will be used in update checker hooks and remote API requests.
* Usually matches the directory name unless the plugin/theme directory has been renamed.
*/
public $slug = '';
/**
* @var Puc_v4p9_InstalledPackage
*/
protected $package;
/**
* @var Puc_v4p9_Scheduler
*/
public $scheduler;
/**
* @var Puc_v4p9_UpgraderStatus
*/
protected $upgraderStatus;
/**
* @var Puc_v4p9_StateStore
*/
protected $updateState;
/**
* @var array List of API errors triggered during the last checkForUpdates() call.
*/
protected $lastRequestApiErrors = [];
/**
* @var string|mixed The default is 0 because parse_url() can return NULL or FALSE.
*/
protected $cachedMetadataHost = 0;
public function __construct($metadataUrl, $directoryName, $slug = null, $checkPeriod = 12, $optionName = '') {
$this->debugMode = (bool)(constant('WP_DEBUG'));
$this->metadataUrl = $metadataUrl;
$this->directoryName = $directoryName;
$this->slug = !empty($slug) ? $slug : $this->directoryName;
$this->optionName = $optionName;
if ( empty($this->optionName) ) {
//BC: Initially the library only supported plugin updates and didn't use type prefixes
//in the option name. Lets use the same prefix-less name when possible.
if ( $this->filterSuffix === '' ) {
$this->optionName = 'external_updates-' . $this->slug;
} else {
$this->optionName = $this->getUniqueName('external_updates');
}
}
$this->package = $this->createInstalledPackage();
$this->scheduler = $this->createScheduler($checkPeriod);
$this->upgraderStatus = new Puc_v4p9_UpgraderStatus();
$this->updateState = new Puc_v4p9_StateStore($this->optionName);
$this->installHooks();
}
protected function installHooks() {
//Insert our update info into the update array maintained by WP.
add_filter('site_transient_' . $this->updateTransient, array($this,'injectUpdate'));
//Insert translation updates into the update list.
add_filter('site_transient_' . $this->updateTransient, array($this, 'injectTranslationUpdates'));
//Clear translation updates when WP clears the update cache.
//This needs to be done directly because the library doesn't actually remove obsolete plugin updates,
//it just hides them (see getUpdate()). We can't do that with translations - too much disk I/O.
add_action(
'delete_site_transient_' . $this->updateTransient,
array($this, 'clearCachedTranslationUpdates')
);
//Rename the update directory to be the same as the existing directory.
if ( $this->directoryName !== '.' ) {
add_filter('upgrader_source_selection', array($this, 'fixDirectoryName'), 10, 3);
}
//Allow HTTP requests to the metadata URL even if it's on a local host.
add_filter('http_request_host_is_external', array($this, 'allowMetadataHost'), 10, 2);
//DebugBar integration.
if ( did_action('plugins_loaded') ) {
$this->maybeInitDebugBar();
} else {
add_action('plugins_loaded', array($this, 'maybeInitDebugBar'));
}
}
/**
* Remove hooks that were added by this update checker instance.
*/
public function removeHooks() {
remove_filter('site_transient_' . $this->updateTransient, array($this,'injectUpdate'));
remove_filter('site_transient_' . $this->updateTransient, array($this, 'injectTranslationUpdates'));
remove_action(
'delete_site_transient_' . $this->updateTransient,
array($this, 'clearCachedTranslationUpdates')
);
remove_filter('upgrader_source_selection', array($this, 'fixDirectoryName'), 10);
remove_filter('http_request_host_is_external', array($this, 'allowMetadataHost'), 10);
remove_action('plugins_loaded', array($this, 'maybeInitDebugBar'));
if ( $this->scheduler ) {
$this->scheduler->removeHooks();
}
}
/**
* Check if the current user has the required permissions to install updates.
*
* @return bool
*/
abstract public function userCanInstallUpdates();
/**
* Explicitly allow HTTP requests to the metadata URL.
*
* WordPress has a security feature where the HTTP API will reject all requests that are sent to
* another site hosted on the same server as the current site (IP match), a local host, or a local
* IP, unless the host exactly matches the current site.
*
* This feature is opt-in (at least in WP 4.4). Apparently some people enable it.
*
* That can be a problem when you're developing your plugin and you decide to host the update information
* on the same server as your test site. Update requests will mysteriously fail.
*
* We fix that by adding an exception for the metadata host.
*
* @param bool $allow
* @param string $host
* @return bool
*/
public function allowMetadataHost($allow, $host) {
if ( $this->cachedMetadataHost === 0 ) {
$this->cachedMetadataHost = parse_url($this->metadataUrl, PHP_URL_HOST);
}
if ( is_string($this->cachedMetadataHost) && (strtolower($host) === strtolower($this->cachedMetadataHost)) ) {
return true;
}
return $allow;
}
/**
* Create a package instance that represents this plugin or theme.
*
* @return Puc_v4p9_InstalledPackage
*/
abstract protected function createInstalledPackage();
/**
* @return Puc_v4p9_InstalledPackage
*/
public function getInstalledPackage() {
return $this->package;
}
/**
* Create an instance of the scheduler.
*
* This is implemented as a method to make it possible for plugins to subclass the update checker
* and substitute their own scheduler.
*
* @param int $checkPeriod
* @return Puc_v4p9_Scheduler
*/
abstract protected function createScheduler($checkPeriod);
/**
* Check for updates. The results are stored in the DB option specified in $optionName.
*
* @return Puc_v4p9_Update|null
*/
public function checkForUpdates() {
$installedVersion = $this->getInstalledVersion();
//Fail silently if we can't find the plugin/theme or read its header.
if ( $installedVersion === null ) {
$this->triggerError(
sprintf('Skipping update check for %s - installed version unknown.', $this->slug),
E_USER_WARNING
);
return null;
}
//Start collecting API errors.
$this->lastRequestApiErrors = [];
add_action('puc_api_error', array($this, 'collectApiErrors'), 10, 4);
$state = $this->updateState;
$state->setLastCheckToNow()
->setCheckedVersion($installedVersion)
->save(); //Save before checking in case something goes wrong
$state->setUpdate($this->requestUpdate());
$state->save();
//Stop collecting API errors.
remove_action('puc_api_error', array($this, 'collectApiErrors'), 10);
return $this->getUpdate();
}
/**
* Load the update checker state from the DB.
*
* @return Puc_v4p9_StateStore
*/
public function getUpdateState() {
return $this->updateState->lazyLoad();
}
/**
* Reset update checker state - i.e. last check time, cached update data and so on.
*
* Call this when your plugin is being uninstalled, or if you want to
* clear the update cache.
*/
public function resetUpdateState() {
$this->updateState->delete();
}
/**
* 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_v4p9_Update|null
*/
public function getUpdate() {
$update = $this->updateState->getUpdate();
//Is there an update available?
if ( isset($update) ) {
//Check if the update is actually newer than the currently installed version.
$installedVersion = $this->getInstalledVersion();
if ( ($installedVersion !== null) && version_compare($update->version, $installedVersion, '>') ){
return $update;
}
}
return null;
}
/**
* Retrieve the latest update (if any) from the configured API endpoint.
*
* Subclasses should run the update through filterUpdateResult before returning it.
*
* @return Puc_v4p9_Update An instance of Update, or NULL when no updates are available.
*/
abstract public function requestUpdate();
/**
* Filter the result of a requestUpdate() call.
*
* @param Puc_v4p9_Update|null $update
* @param array|WP_Error|null $httpResult The value returned by wp_remote_get(), if any.
* @return Puc_v4p9_Update
*/
protected function filterUpdateResult($update, $httpResult = null) {
//Let plugins/themes modify the update.
$update = apply_filters($this->getUniqueName('request_update_result'), $update, $httpResult);
$this->fixSupportedWordpressVersion($update);
if ( isset($update, $update->translations) ) {
//Keep only those translation updates that apply to this site.
$update->translations = $this->filterApplicableTranslations($update->translations);
}
return $update;
}
/**
* The "Tested up to" field in the plugin metadata is supposed to be in the form of "major.minor",
* while WordPress core's list_plugin_updates() expects the $update->tested field to be an exact
* version, e.g. "major.minor.patch", to say it's compatible. In other case it shows
* "Compatibility: Unknown".
* The function mimics how wordpress.org API crafts the "tested" field out of "Tested up to".
*
* @param Puc_v4p9_Metadata|null $update
*/
protected function fixSupportedWordpressVersion(Puc_v4p9_Metadata $update = null) {
if ( !isset($update->tested) || !preg_match('/^\d++\.\d++$/', $update->tested) ) {
return;
}
$actualWpVersions = [];
$wpVersion = $GLOBALS['wp_version'];
if ( function_exists('get_core_updates') ) {
$coreUpdates = get_core_updates();
if ( is_array($coreUpdates) ) {
foreach ($coreUpdates as $coreUpdate) {
if ( isset($coreUpdate->current) ) {
$actualWpVersions[] = $coreUpdate->current;
}
}
}
}
$actualWpVersions[] = $wpVersion;
$actualWpPatchNumber = null;
foreach ($actualWpVersions as $version) {
if ( preg_match('/^(?P<majorMinor>\d++\.\d++)(?:\.(?P<patch>\d++))?/', $version, $versionParts) ) {
if ( $versionParts['majorMinor'] === $update->tested ) {
$patch = isset($versionParts['patch']) ? intval($versionParts['patch']) : 0;
if ( $actualWpPatchNumber === null ) {
$actualWpPatchNumber = $patch;
} else {
$actualWpPatchNumber = max($actualWpPatchNumber, $patch);
}
}
}
}
if ( $actualWpPatchNumber === null ) {
$actualWpPatchNumber = 999;
}
if ( $actualWpPatchNumber > 0 ) {
$update->tested .= '.' . $actualWpPatchNumber;
}
}
/**
* Get the currently installed version of the plugin or theme.
*
* @return string|null Version number.
*/
public function getInstalledVersion() {
return $this->package->getInstalledVersion();
}
/**
* Get the full path of the plugin or theme directory.
*
* @return string
*/
public function getAbsoluteDirectoryPath() {
return $this->package->getAbsoluteDirectoryPath();
}
/**
* Trigger a PHP error, but only when $debugMode is enabled.
*
* @param string $message
* @param int $errorType
*/
public function triggerError($message, $errorType) {
if ( $this->isDebugModeEnabled() ) {
trigger_error($message, $errorType);
}
}
/**
* @return bool
*/
protected function isDebugModeEnabled() {
if ( $this->debugMode === null ) {
$this->debugMode = (bool)(constant('WP_DEBUG'));
}
return $this->debugMode;
}
/**
* Get the full name of an update checker filter, action or DB entry.
*
* This method adds the "puc_" prefix and the "-$slug" suffix to the filter name.
* For example, "pre_inject_update" becomes "puc_pre_inject_update-plugin-slug".
*
* @param string $baseTag
* @return string
*/
public function getUniqueName($baseTag) {
$name = 'puc_' . $baseTag;
if ( $this->filterSuffix !== '' ) {
$name .= '_' . $this->filterSuffix;
}
return $name . '-' . $this->slug;
}
/**
* Store API errors that are generated when checking for updates.
*
* @internal
* @param WP_Error $error
* @param array|null $httpResponse
* @param string|null $url
* @param string|null $slug
*/
public function collectApiErrors($error, $httpResponse = null, $url = null, $slug = null) {
if ( isset($slug) && ($slug !== $this->slug) ) {
return;
}
$this->lastRequestApiErrors[] = array(
'error' => $error,
'httpResponse' => $httpResponse,
'url' => $url,
);
}
/**
* @return array
*/
public function getLastRequestApiErrors() {
return $this->lastRequestApiErrors;
}
/* -------------------------------------------------------------------
* PUC filters and filter utilities
* -------------------------------------------------------------------
*/
/**
* Register a callback for one of the update checker filters.
*
* Identical to add_filter(), except it automatically adds the "puc_" prefix
* and the "-$slug" suffix to the filter name. For example, "request_info_result"
* becomes "puc_request_info_result-your_plugin_slug".
*
* @param string $tag
* @param callable $callback
* @param int $priority
* @param int $acceptedArgs
*/
public function addFilter($tag, $callback, $priority = 10, $acceptedArgs = 1) {
add_filter($this->getUniqueName($tag), $callback, $priority, $acceptedArgs);
}
/* -------------------------------------------------------------------
* Inject updates
* -------------------------------------------------------------------
*/
/**
* Insert the latest update (if any) into the update list maintained by WP.
*
* @param stdClass $updates Update list.
* @return stdClass Modified update list.
*/
public function injectUpdate($updates) {
//Is there an update to insert?
$update = $this->getUpdate();
if ( !$this->shouldShowUpdates() ) {
$update = null;
}
if ( !empty($update) ) {
//Let plugins filter the update info before it's passed on to WordPress.
$update = apply_filters($this->getUniqueName('pre_inject_update'), $update);
$updates = $this->addUpdateToList($updates, $update->toWpFormat());
} else {
//Clean up any stale update info.
$updates = $this->removeUpdateFromList($updates);
}
return $updates;
}
/**
* @param stdClass|null $updates
* @param stdClass|array $updateToAdd
* @return stdClass
*/
protected function addUpdateToList($updates, $updateToAdd) {
if ( !is_object($updates) ) {
$updates = new stdClass();
$updates->response = [];
}
$updates->response[$this->getUpdateListKey()] = $updateToAdd;
return $updates;
}
/**
* @param stdClass|null $updates
* @return stdClass|null
*/
protected function removeUpdateFromList($updates) {
if ( isset($updates, $updates->response) ) {
unset($updates->response[$this->getUpdateListKey()]);
}
return $updates;
}
/**
* Get the key that will be used when adding updates to the update list that's maintained
* by the WordPress core. The list is always an associative array, but the key is different
* for plugins and themes.
*
* @return string
*/
abstract protected function getUpdateListKey();
/**
* Should we show available updates?
*
* Usually the answer is "yes", but there are exceptions. For example, WordPress doesn't
* support automatic updates installation for mu-plugins, so PUC usually won't show update
* notifications in that case. See the plugin-specific subclass for details.
*
* Note: This method only applies to updates that are displayed (or not) in the WordPress
* admin. It doesn't affect APIs like requestUpdate and getUpdate.
*
* @return bool
*/
protected function shouldShowUpdates() {
return true;
}
/* -------------------------------------------------------------------
* JSON-based update API
* -------------------------------------------------------------------
*/
/**
* Retrieve plugin or theme metadata from the JSON document at $this->metadataUrl.
*
* @param string $metaClass Parse the JSON as an instance of this class. It must have a static fromJson method.
* @param string $filterRoot
* @param array $queryArgs Additional query arguments.
* @return array [Puc_v4p9_Metadata|null, array|WP_Error] A metadata instance and the value returned by wp_remote_get().
*/
protected function requestMetadata($metaClass, $filterRoot, $queryArgs = []) {
//Query args to append to the URL. Plugins can add their own by using a filter callback (see addQueryArgFilter()).
$queryArgs = array_merge(
array(
'installed_version' => strval($this->getInstalledVersion()),
'php' => phpversion(),
'locale' => get_locale(),
),
$queryArgs
);
$queryArgs = apply_filters($this->getUniqueName($filterRoot . '_query_args'), $queryArgs);
//Various options for the wp_remote_get() call. Plugins can filter these, too.
$options = array(
'timeout' => 10, //seconds
'headers' => array(
'Accept' => 'application/json',
),
);
$options = apply_filters($this->getUniqueName($filterRoot . '_options'), $options);
//The metadata file should be at 'http://your-api.com/url/here/$slug/info.json'
$url = $this->metadataUrl;
if ( !empty($queryArgs) ){
$url = add_query_arg($queryArgs, $url);
}
$result = wp_remote_get($url, $options);
$result = apply_filters($this->getUniqueName('request_metadata_http_result'), $result, $url, $options);
//Try to parse the response
$status = $this->validateApiResponse($result);
$metadata = null;
if ( !is_wp_error($status) ){
$metadata = call_user_func(array($metaClass, 'fromJson'), $result['body']);
} else {
do_action('puc_api_error', $status, $result, $url, $this->slug);
$this->triggerError(
sprintf('The URL %s does not point to a valid metadata file. ', $url)
. $status->get_error_message(),
E_USER_WARNING
);
}
return array($metadata, $result);
}
/**
* Check if $result is a successful update API response.
*
* @param array|WP_Error $result
* @return true|WP_Error
*/
protected function validateApiResponse($result) {
if ( is_wp_error($result) ) { /** @var WP_Error $result */
return new WP_Error($result->get_error_code(), 'WP HTTP Error: ' . $result->get_error_message());
}
if ( !isset($result['response']['code']) ) {
return new WP_Error(
'puc_no_response_code',
'wp_remote_get() returned an unexpected result.'
);
}
if ( $result['response']['code'] !== 200 ) {
return new WP_Error(
'puc_unexpected_response_code',
'HTTP response code is ' . $result['response']['code'] . ' (expected: 200)'
);
}
if ( empty($result['body']) ) {
return new WP_Error('puc_empty_response', 'The metadata file appears to be empty.');
}
return true;
}
/* -------------------------------------------------------------------
* Language packs / Translation updates
* -------------------------------------------------------------------
*/
/**
* Filter a list of translation updates and return a new list that contains only updates
* that apply to the current site.
*
* @param array $translations
* @return array
*/
protected function filterApplicableTranslations($translations) {
$languages = array_flip(array_values(get_available_languages()));
$installedTranslations = $this->getInstalledTranslations();
$applicableTranslations = [];
foreach ($translations as $translation) {
//Does it match one of the available core languages?
$isApplicable = array_key_exists($translation->language, $languages);
//Is it more recent than an already-installed translation?
if ( isset($installedTranslations[$translation->language]) ) {
$updateTimestamp = strtotime($translation->updated);
$installedTimestamp = strtotime($installedTranslations[$translation->language]['PO-Revision-Date']);
$isApplicable = $updateTimestamp > $installedTimestamp;
}
if ( $isApplicable ) {
$applicableTranslations[] = $translation;
}
}
return $applicableTranslations;
}
/**
* Get a list of installed translations for this plugin or theme.
*
* @return array
*/
protected function getInstalledTranslations() {
if ( !function_exists('wp_get_installed_translations') ) {
return [];
}
$installedTranslations = wp_get_installed_translations($this->translationType . 's');
if ( isset($installedTranslations[$this->directoryName]) ) {
$installedTranslations = $installedTranslations[$this->directoryName];
} else {
$installedTranslations = [];
}
return $installedTranslations;
}
/**
* Insert translation updates into the list maintained by WordPress.
*
* @param stdClass $updates
* @return stdClass
*/
public function injectTranslationUpdates($updates) {
$translationUpdates = $this->getTranslationUpdates();
if ( empty($translationUpdates) ) {
return $updates;
}
//Being defensive.
if ( !is_object($updates) ) {
$updates = new stdClass();
}
if ( !isset($updates->translations) ) {
$updates->translations = [];
}
//In case there's a name collision with a plugin or theme hosted on wordpress.org,
//remove any preexisting updates that match our thing.
$updates->translations = array_values(array_filter(
$updates->translations,
array($this, 'isNotMyTranslation')
));
//Add our updates to the list.
foreach($translationUpdates as $update) {
$convertedUpdate = array_merge(
array(
'type' => $this->translationType,
'slug' => $this->directoryName,
'autoupdate' => 0,
//AFAICT, WordPress doesn't actually use the "version" field for anything.
//But lets make sure it's there, just in case.
'version' => isset($update->version) ? $update->version : ('1.' . strtotime($update->updated)),
),
(array)$update
);
$updates->translations[] = $convertedUpdate;
}
return $updates;
}
/**
* Get a list of available translation updates.
*
* This method will return an empty array if there are no updates.
* Uses cached update data.
*
* @return array
*/
public function getTranslationUpdates() {
return $this->updateState->getTranslations();
}
/**
* Remove all cached translation updates.
*
* @see wp_clean_update_cache
*/
public function clearCachedTranslationUpdates() {
$this->updateState->setTranslations([]);
}
/**
* Filter callback. Keeps only translations that *don't* match this plugin or theme.
*
* @param array $translation
* @return bool
*/
protected function isNotMyTranslation($translation) {
$isMatch = isset($translation['type'], $translation['slug'])
&& ($translation['type'] === $this->translationType)
&& ($translation['slug'] === $this->directoryName);
return !$isMatch;
}
/* -------------------------------------------------------------------
* Fix directory name when installing updates
* -------------------------------------------------------------------
*/
/**
* Rename the update directory to match the existing plugin/theme directory.
*
* When WordPress installs a plugin or theme update, it assumes that the ZIP file will contain
* exactly one directory, and that the directory name will be the same as the directory where
* the plugin or theme is currently installed.
*
* GitHub and other repositories provide ZIP downloads, but they often use directory names like
* "project-branch" or "project-tag-hash". We need to change the name to the actual plugin folder.
*
* This is a hook callback. Don't call it from a plugin.
*
* @access protected
*
* @param string $source The directory to copy to /wp-content/plugins or /wp-content/themes. Usually a subdirectory of $remoteSource.
* @param string $remoteSource WordPress has extracted the update to this directory.
* @param WP_Upgrader $upgrader
* @return string|WP_Error
*/
public function fixDirectoryName($source, $remoteSource, $upgrader) {
global $wp_filesystem;
/** @var WP_Filesystem_Base $wp_filesystem */
//Basic sanity checks.
if ( !isset($source, $remoteSource, $upgrader, $upgrader->skin, $wp_filesystem) ) {
return $source;
}
//If WordPress is upgrading anything other than our plugin/theme, leave the directory name unchanged.
if ( !$this->isBeingUpgraded($upgrader) ) {
return $source;
}
//Rename the source to match the existing directory.
$correctedSource = trailingslashit($remoteSource) . $this->directoryName . '/';
if ( $source !== $correctedSource ) {
//The update archive should contain a single directory that contains the rest of plugin/theme files.
//Otherwise, WordPress will try to copy the entire working directory ($source == $remoteSource).
//We can't rename $remoteSource because that would break WordPress code that cleans up temporary files
//after update.
if ( $this->isBadDirectoryStructure($remoteSource) ) {
return new WP_Error(
'puc-incorrect-directory-structure',
sprintf(
'The directory structure of the update is incorrect. All files should be inside ' .
'a directory named <span class="code">%s</span>, not at the root of the ZIP archive.',
htmlentities($this->slug)
)
);
}
/** @var WP_Upgrader_Skin $upgrader ->skin */
$upgrader->skin->feedback(sprintf(
'Renaming %s to %s…',
'<span class="code">' . basename($source) . '</span>',
'<span class="code">' . $this->directoryName . '</span>'
));
if ( $wp_filesystem->move($source, $correctedSource, true) ) {
$upgrader->skin->feedback('Directory successfully renamed.');
return $correctedSource;
} else {
return new WP_Error(
'puc-rename-failed',
'Unable to rename the update to match the existing directory.'
);
}
}
return $source;
}
/**
* Is there an update being installed right now, for this plugin or theme?
*
* @param WP_Upgrader|null $upgrader The upgrader that's performing the current update.
* @return bool
*/
abstract public function isBeingUpgraded($upgrader = null);
/**
* Check for incorrect update directory structure. An update must contain a single directory,
* all other files should be inside that directory.
*
* @param string $remoteSource Directory path.
* @return bool
*/
protected function isBadDirectoryStructure($remoteSource) {
global $wp_filesystem;
/** @var WP_Filesystem_Base $wp_filesystem */
$sourceFiles = $wp_filesystem->dirlist($remoteSource);
if ( is_array($sourceFiles) ) {
$sourceFiles = array_keys($sourceFiles);
$firstFilePath = trailingslashit($remoteSource) . $sourceFiles[0];
return (count($sourceFiles) > 1) || (!$wp_filesystem->is_dir($firstFilePath));
}
//Assume it's fine.
return false;
}
/* -------------------------------------------------------------------
* DebugBar integration
* -------------------------------------------------------------------
*/
/**
* Initialize the update checker Debug Bar plugin/add-on thingy.
*/
public function maybeInitDebugBar() {
if ( class_exists('Debug_Bar', false) && file_exists(dirname(__FILE__) . '/DebugBar') ) {
$this->createDebugBarExtension();
}
}
protected function createDebugBarExtension() {
return new Puc_v4p9_DebugBar_Extension($this);
}
/**
* Display additional configuration details in the Debug Bar panel.
*
* @param Puc_v4p9_DebugBar_Panel $panel
*/
public function onDisplayConfiguration($panel) {
//Do nothing. Subclasses can use this to add additional info to the panel.
}
}
endif;
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