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<?php
/**
* @package com_zoo
* @author YOOtheme http://www.yootheme.com
* @copyright Copyright (C) YOOtheme GmbH
* @license http://www.gnu.org/licenses/gpl.html GNU/GPL
*/
/**
* Install helper class.
*
* @package Component.Helpers
* @since 2.0
*/
class InstallHelper extends AppHelper {
/**
* Uninstall Application
*
* @param Application $application
* @since 2.0
* @throws InstallHelperException
*/
public function uninstallApplication(Application $application) {
$group = $application->getGroup();
if ($this->_applicationExists($group)) {
throw new InstallHelperException('Delete existing applications first.');
}
if (!($directory = $this->app->path->path("applications:$group")) || !JFolder::delete($directory)) {
throw new InstallHelperException('Unable to delete directory: (' . $directory . ')');
}
}
/**
* Checks if application exists
*
* @param string $group
* @return boolean
* @since 2.0
*/
protected function _applicationExists($group) {
$result = $this->app->table->application->first(array('conditions' => 'application_group = '.$this->app->database->Quote($group)));
return !empty($result);
}
/**
* Installs an Application from a user upload.
*
* @param array $userfile The userfile to install from
* @return int 2 = update, 1 = install
*
* @throws InstallHelperException
* @since 2.0
*/
public function installApplicationFromUserfile($userfile) {
// Make sure that file uploads are enabled in php
if (!(bool) ini_get('file_uploads')) {
throw new InstallHelperException('Fileuploads are not enabled in php.');
}
// If there is no uploaded file, we have a problem...
if (!is_array($userfile) ) {
throw new InstallHelperException('No file selected.');
}
// Check if there was a problem uploading the file.
if ($userfile['error'] || $userfile['size'] < 1) {
throw new InstallHelperException('Upload error occured.');
}
// Temporary folder to extract the archive into
$tmp_directory = $this->app->path->path('tmp:').'/';
$archivename = $tmp_directory.$userfile['name'];
if (!JFile::upload($userfile['tmp_name'], $archivename)) {
throw new InstallHelperException("Could not move uploaded file to ($archivename)");
}
// Clean the paths to use for archive extraction
$extractdir = $tmp_directory.uniqid('install_');
jimport('joomla.filesystem.archive');
// do the unpacking of the archive
if (!JArchive::extract($archivename, $extractdir)) {
throw new InstallHelperException("Could not extract zip file to ($tmp_directory)");
}
return $this->installApplicationFromFolder($extractdir);
}
/**
* Installs an Application from a folder.
*
* @param string $folder The application folder
*
* @return int 2 = update, 1 = install
*
* @throws InstallHelperException
* @since 2.0
*/
public function installApplicationFromFolder($folder) {
$folder = rtrim($folder, "\\/") . '/';
if (!($manifest = $this->findManifest($folder))) {
throw new InstallHelperException('No valid xml file found in the directory');
}
$group = $this->getGroup($manifest);
if (empty($group)) {
throw new InstallHelperException('No app group in application.xml specified.');
}
$update = false;
$write_directory = $this->app->path->path('applications:').'/'.$group.'/';
if (JFolder::exists($write_directory)) {
$files = $this->app->filesystem->readDirectoryFiles($folder.'types/', '', '/\.config$/', false);
foreach ($files as $file) {
if (JFile::exists($write_directory.'types/'.$file)) {
JFile::delete($folder.'types/'.$file);
}
}
$files = $this->app->filesystem->readDirectoryFiles($folder, '', '/(positions\.(config|xml)|metadata\.xml)$/', true);
foreach ($files as $file) {
if (JFile::exists($write_directory.$file)) {
JFile::delete($folder.$file);
}
}
$update = true;
}
if (!JFolder::copy($folder, $write_directory, '', true)) {
throw new InstallHelperException('Unable to write to folder: ' . $write_directory);
}
$applications = $this->app->application->groups();
$application = isset($applications[$group]) ? $applications[$group] : null;
// trigger installed event
$this->app->event->dispatcher->notify($this->app->event->create($application, 'application:installed', compact('update')));
return $update ? 2 : 1;
}
/**
* Reads application group from manifest
*
* @param SimpleXMLElement $manifest
* @return string group
* @since 2.0
*/
public function getGroup(SimpleXMLElement $manifest) {
return (string) $manifest->group;
}
/**
* Reads version from manifest
*
* @param SimpleXMLElement $manifest
* @return string version
* @since 2.0
*/
public function getVersion(SimpleXMLElement $manifest) {
return (string) $manifest->version;
}
/**
* Finds manifest in path
*
* @param string $path
* @return SimpleXMLElement|false
* @since 2.0
*/
public function findManifest($path) {
$path = rtrim($path, "\\/") . '/';
foreach ($this->app->filesystem->readDirectoryFiles($path, $path, '/\.xml$/', false) as $file) {
if (($xml = simplexml_load_file($file)) && $this->isManifest($xml)) {
return $xml;
}
}
return false;
}
/**
* Checks if xml is manifest
*
* @param SimpleXMLElement $xml
*
* @return boolean
*
* @since 2.0
*/
public function isManifest(SimpleXMLElement $xml) {
return $xml->getName() == 'application';
}
}
/**
* InstallHelperException identifies an Exception in the InstallHelper class
* @see InstallHelper
*/
class InstallHelperException extends AppException {}