installer.php

Joomla15 - 最新开源CMS

		$files = $element->children();
		if (count($files) == 0) {
			// No files to process
			return 0;
		}

		// Get the name of the sql file to process
		$sqlfile = '';
		foreach ($files as $file)
		{
			$fCharset = (strtolower($file->attributes('charset')) == 'utf8') ? 'utf8' : '';
			$fDriver  = strtolower($file->attributes('driver'));
			if ($fDriver == 'mysqli') {
				$fDriver = 'mysql';
			}

			if( $fCharset == $dbCharset && $fDriver == $dbDriver) {
				$sqlfile = $file->data();
				// Check that sql files exists before reading. Otherwise raise error for rollback
				if ( !file_exists( $this->getPath('extension_administrator').DS.$sqlfile ) ) {
					return false;
				}
				$buffer = file_get_contents($this->getPath('extension_administrator').DS.$sqlfile);

				// Graceful exit and rollback if read not successful
				if ( $buffer === false ) {
					return false;
				}

				// Create an array of queries from the sql file
				$queries = JInstallerHelper::splitSql($buffer);

				if (count($queries) == 0) {
					// No queries to process
					return 0;
				}

				// Process each query in the $queries array (split out of sql file).
				foreach ($queries as $query)
				{
					$query = trim($query);
					if ($query != '' && $query{0} != '#') {
						$db->setQuery($query);
						if (!$db->query()) {
							JError::raiseWarning(1, 'JInstaller::install: '.JText::_('SQL Error')." ".$db->stderr(true));
							return false;
						}
					}
				}
			}
		}

		return (int) count($queries);
	}

	/**
	 * Method to parse through a files element of the installation manifest and take appropriate
	 * action.
	 *
	 * @access	public
	 * @param	object	$element 	The xml node to process
	 * @param	int		$cid		Application ID of application to install to
	 * @return	boolean	True on success
	 * @since	1.5
	 */
	function parseFiles($element, $cid=0)
	{
		// Initialize variables
		$copyfiles = array ();

		// Get the client info
		jimport('joomla.application.helper');
		$client =& JApplicationHelper::getClientInfo($cid);

		if (!is_a($element, 'JSimpleXMLElement') || !count($element->children())) {
			// Either the tag does not exist or has no children therefore we return zero files processed.
			return 0;
		}

		// Get the array of file nodes to process
		$files = $element->children();
		if (count($files) == 0) {
			// No files to process
			return 0;
		}

		/*
		 * Here we set the folder we are going to remove the files from.  There are a few
		 * special cases that need to be considered for certain reserved tags.
		 *
		 * 	- 'media' Files are copied to the JPATH_BASE/images/stories/ folder
		 * 	- 'languages' Files are copied to JPATH_BASE/languages/ folder
		 */
		switch ($element->name())
		{
			case 'media':
				if ($element->attributes('destination')) {
					$folder = $element->attributes('destination');
				} else {
					$folder = 'stories';
				}
				$destintion = $client->path.DS.'images'.DS.$folder;
				break;

			case 'languages':
				$destination = $client->path.DS.'language';
				break;

			default:
				if ($client) {
					$pathname = 'extension_'.$client->name;
					$destination = $this->getPath($pathname);
				} else {
					$pathname = 'extension_root';
					$destination = $this->getPath($pathname);
				}
				break;
		}

		/*
		 * Here we set the folder we are going to copy the files from.
		 *
		 * Does the element have a folder attribute?
		 *
		 * If so this indicates that the files are in a subdirectory of the source
		 * folder and we should append the folder attribute to the source path when
		 * copying files.
		 */
		if ($folder = $element->attributes('folder')) {
			$source = $this->getPath('source').DS.$folder;
		} else {
			$source = $this->getPath('source');
		}

		// Process each file in the $files array (children of $tagName).
		foreach ($files as $file) {
			/*
			 * If the file is a language, we must handle it differently.  Language files
			 * go in a subdirectory based on the language code, ie.
			 *
			 * 		<language tag="en-US">en-US.mycomponent.ini</language>
			 *
			 * would go in the en-US subdirectory of the languages directory.
			 *
			 * We will only install language files where a core language pack
			 * already exists.
			 */
			if ($file->name() == 'language' && $file->attributes('tag') != '') {
				$path['src']	= $source.DS.$file->data();
				$path['dest']	= $destination.DS.$file->attributes('tag').DS.basename($file->data());

				// If the language folder is not present, then the core pack hasn't been installed... ignore
				if (!JFolder::exists(dirname($path['dest']))) {
					continue;
				}
			} else {
				$path['src']	= $source.DS.$file->data();
				$path['dest']	= $destination.DS.$file->data();
			}

			// Is this path a file or folder?
			$path['type']	= ( $file->name() == 'folder') ? 'folder' : 'file';

			/*
			 * Before we can add a file to the copyfiles array we need to ensure
			 * that the folder we are copying our file to exits and if it doesn't,
			 * we need to create it.
			 */
			if (basename($path['dest']) != $path['dest']) {
				$newdir = dirname($path['dest']);

				if (!JFolder::create($newdir)) {
					JError::raiseWarning(1, 'JInstaller::install: '.JText::_('Failed to create directory').' "'.$newdir.'"');
					return false;
				}
			}

			// Add the file to the copyfiles array
			$copyfiles[] = $path;
		}

		return $this->copyFiles($copyfiles);
	}

	/**
	 * Method to parse through a languages element of the installation manifest and take appropriate
	 * action.
	 *
	 * @access	public
	 * @param	object	$element 	The xml node to process
	 * @param	int		$cid		Application ID of application to install to
	 * @return	boolean	True on success
	 * @since	1.5
	 */
	function parseLanguages($element, $cid=0)
	{
		// Initialize variables
		$copyfiles = array ();

		// Get the client info
		jimport('joomla.application.helper');
		$client =& JApplicationHelper::getClientInfo($cid);

		if (!is_a($element, 'JSimpleXMLElement') || !count($element->children())) {
			// Either the tag does not exist or has no children therefore we return zero files processed.
			return 0;
		}

		// Get the array of file nodes to process
		$files = $element->children();
		if (count($files) == 0) {
			// No files to process
			return 0;
		}

		/*
		 * Here we set the folder we are going to copy the files to.
		 *
		 * 'languages' Files are copied to JPATH_BASE/language/ folder
		 */
		$destination = $client->path.DS.'language';

		/*
		 * Here we set the folder we are going to copy the files from.
		 *
		 * Does the element have a folder attribute?
		 *
		 * If so this indicates that the files are in a subdirectory of the source
		 * folder and we should append the folder attribute to the source path when
		 * copying files.
		 */
		if ($folder = $element->attributes('folder')) {
			$source = $this->getPath('source').DS.$folder;
		} else {
			$source = $this->getPath('source');
		}

		// Process each file in the $files array (children of $tagName).
		foreach ($files as $file) {
			/*
			 * Language files go in a subfolder based on the language code, ie.
			 *
			 * 		<language tag="en-US">en-US.mycomponent.ini</language>
			 *
			 * would go in the en-US subdirectory of the language folder.
			 *
			 * We will only install language files where a core language pack
			 * already exists.
			 */
			if ($file->attributes('tag') != '') {
				$path['src']	= $source.DS.$file->data();
				$path['dest']	= $destination.DS.$file->attributes('tag').DS.basename($file->data());

				// If the language folder is not present, then the core pack hasn't been installed... ignore
				if (!JFolder::exists(dirname($path['dest']))) {
					continue;
				}
			} else {
				$path['src']	= $source.DS.$file->data();
				$path['dest']	= $destination.DS.$file->data();
			}

			/*
			 * Before we can add a file to the copyfiles array we need to ensure
			 * that the folder we are copying our file to exits and if it doesn't,
			 * we need to create it.
			 */
			if (basename($path['dest']) != $path['dest']) {
				$newdir = dirname($path['dest']);

				if (!JFolder::create($newdir)) {
					JError::raiseWarning(1, 'JInstaller::install: '.JText::_('Failed to create directory').' "'.$newdir.'"');
					return false;
				}
			}

			// Add the file to the copyfiles array
			$copyfiles[] = $path;
		}

		return $this->copyFiles($copyfiles);
	}

	/**
	 * Method to parse through a media element of the installation manifest and take appropriate
	 * action.
	 *
	 * @access	public
	 * @param	object	$element 	The xml node to process
	 * @param	int		$cid		Application ID of application to install to
	 * @return	boolean	True on success
	 * @since	1.5
	 */
	function parseMedia($element, $cid=0)
	{
		// Initialize variables
		$copyfiles = array ();

		// Get the client info
		jimport('joomla.application.helper');
		$client =& JApplicationHelper::getClientInfo($cid);

		if (!is_a($element, 'JSimpleXMLElement') || !count($element->children())) {
			// Either the tag does not exist or has no children therefore we return zero files processed.
			return 0;
		}

		// Get the array of file nodes to process
		$files = $element->children();
		if (count($files) == 0) {
			// No files to process
			return 0;
		}

		/*
		 * Here we set the folder we are going to copy the files to.
		 * 	Default 'media' Files are copied to the JPATH_BASE/images folder
		 */
		$folder = ($element->attributes('destination')) ? DS.$element->attributes('destination') : null;
		$destination = JPath::clean(JPATH_ROOT.DS.'media'.$folder);

		/*
		 * Here we set the folder we are going to copy the files from.
		 *
		 * Does the element have a folder attribute?
		 *
		 * If so this indicates that the files are in a subdirectory of the source
		 * folder and we should append the folder attribute to the source path when
		 * copying files.
		 */
		if ($folder = $element->attributes('folder')) {
			$source = $this->getPath('source').DS.$folder;
		} else {
			$source = $this->getPath('source');
		}

		// Process each file in the $files array (children of $tagName).
		foreach ($files as $file)
		{
			$path['src']	= $source.DS.$file->data();
			$path['dest']	= $destination.DS.$file->data();

			/*
			 * Before we can add a file to the copyfiles array we need to ensure
			 * that the folder we are copying our file to exits and if it doesn't,
			 * we need to create it.
			 */
			if (basename($path['dest']) != $path['dest']) {
				$newdir = dirname($path['dest']);

				if (!JFolder::create($newdir)) {
					JError::raiseWarning(1, 'JInstaller::install: '.JText::_('Failed to create directory').' "'.$newdir.'"');
					return false;
				}
			}

			// Add the file to the copyfiles array
			$copyfiles[] = $path;
		}

		return $this->copyFiles($copyfiles);
	}

	/**
	 * Method to parse the parameters of an extension, build the INI
	 * string for it's default parameters, and return the INI string.
	 *
	 * @access	public
	 * @return	string	INI string of parameter values
	 * @since	1.5
	 */
	function getParams()
	{
		// Get the manifest document root element
		$root = & $this->_manifest->document;

		// Get the element of the tag names
		$element =& $root->getElementByPath('params');
		if (!is_a($element, 'JSimpleXMLElement') || !count($element->children())) {
			// Either the tag does not exist or has no children therefore we return zero files processed.
			return null;
		}

		// Get the array of parameter nodes to process
		$params = $element->children();
		if (count($params) == 0) {
			// No params to process
			return null;
		}

		// Process each parameter in the $params array.
		$ini = null;
		foreach ($params as $param) {
			if (!$name = $param->attributes('name')) {
				continue;
			}

			if (!$value = $param->attributes('default')) {
				continue;
			}

			$ini .= $name."=".$value."\n";
		}
		return $ini;
	}

	/**
	 * Copy files from source directory to the target directory
	 *
	 * @access	public
	 * @param	array $files array with filenames
	 * @param	boolean $overwrite True if existing files can be replaced
	 * @return	boolean True on success
	 * @since	1.5
	 */
	function copyFiles($files, $overwrite=null)
	{
		/*
		 * To allow for manual override on the overwriting flag, we check to see if
		 * the $overwrite flag was set and is a boolean value.  If not, use the object
		 * allowOverwrite flag.
		 */
		if (is_null($overwrite) || !is_bool($overwrite)) {
			$overwrite = $this->_overwrite;
		}

		/*
		 * $files must be an array of filenames.  Verify that it is an array with
		 * at least one file to copy.
		 */
		if (is_array($files) && count($files) > 0)
		{
			foreach ($files as $file)
			{
				// Get the source and destination paths
				$filesource	= JPath::clean($file['src']);
				$filedest	= JPath::clean($file['dest']);
				$filetype	= array_key_exists('type', $file) ? $file['type'] : 'file';

				if (!file_exists($filesource)) {
					/*
					 * The source file does not exist.  Nothing to copy so set an error
					 * and return false.
					 */
					JError::raiseWarning(1, 'JInstaller::install: '.JText::sprintf('File does not exist', $filesource));
					return false;
				} elseif (file_exists($filedest) && !$overwrite) {

						/*
						 * It's okay if the manifest already exists
						 */
						if ($this->getPath( 'manifest' ) == $filesource) {
							continue;
						}

						/*
						 * The destination file already exists and the overwrite flag is false.
						 * Set an error and return false.
						 */
						JError::raiseWarning(1, 'JInstaller::install: '.JText::sprintf('WARNSAME', $filedest));
						return false;
				} else {

					// Copy the folder or file to the new location.
					if ( $filetype == 'folder') {

						if (!(JFolder::copy($filesource, $filedest, null, $overwrite))) {
							JError::raiseWarning(1, 'JInstaller::install: '.JText::sprintf('Failed to copy folder to', $filesource, $filedest));
							return false;
						}

						$step = array ('type' => 'folder', 'path' => $filedest);
					} else {

						if (!(JFile::copy($filesource, $filedest))) {
							JError::raiseWarning(1, 'JInstaller::install: '.JText::sprintf('Failed to copy file to', $filesource, $filedest));
							return false;
						}

						$step = array ('type' => 'file', 'path' => $filedest);
					}

					/*
					 * Since we copied a file/folder, we want to add it to the installation step stack so that
					 * in case we have to roll back the installation we can remove the files copied.
					 */
					$this->_stepStack[] = $step;
				}
			}
		} else {

			/*
			 * The $files variable was either not an array or an empty array
			 */
			return false;
		}