1 files changed, 258 insertions, 0 deletions
diff --git a/lib/private/migration/content.php b/lib/private/migration/content.php
new file mode 100644
index 00000000000..4413d722731
--- /dev/null
+++ b/lib/private/migration/content.php
@@ -0,0 +1,258 @@
+<?php
+/**
+ * ownCloud
+ *
+ * @author Tom Needham
+ * @copyright 2012 Tom Needham tom@owncloud.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library 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 AFFERO GENERAL PUBLIC LICENSE for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public
+ * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+/**
+ * provides methods to add and access data from the migration
+ */
+class OC_Migration_Content{
+
+	private $zip=false;
+	// Holds the MDB2 object
+	private $db=null;
+	// Holds an array of tmpfiles to delete after zip creation
+	private $tmpfiles=array();
+
+	/**
+	* @brief sets up the
+	* @param $zip ZipArchive object
+	* @param optional $db a MDB2 database object (required for exporttype user)
+	* @return bool
+	*/
+	public function __construct( $zip, $db=null ) {
+
+		$this->zip = $zip;
+		$this->db = $db;
+
+	}
+
+	// @brief prepares the db
+	// @param $query the sql query to prepare
+	public function prepare( $query ) {
+
+		// Only add database to tmpfiles if actually used
+		if( !is_null( $this->db ) ) {
+			// Get db path
+			$db = $this->db->getDatabase();
+			if(!in_array($db, $this->tmpfiles)) {
+				$this->tmpfiles[] = $db;
+			}
+		}
+
+		// Optimize the query
+		$query = $this->processQuery( $query );
+
+		// Optimize the query
+		$query = $this->db->prepare( $query );
+
+		// Die if we have an error (error means: bad query, not 0 results!)
+		if( PEAR::isError( $query ) ) {
+			$entry = 'DB Error: "'.$query->getMessage().'"<br />';
+			$entry .= 'Offending command was: '.$query.'<br />';
+			OC_Log::write( 'migration', $entry, OC_Log::FATAL );
+			return false;
+		} else {
+			return $query;
+		}
+
+	}
+
+	/**
+	* @brief processes the db query
+	* @param $query the query to process
+	* @return string of processed query
+	*/
+	private function processQuery( $query ) {
+		$query = str_replace( '`', '\'', $query );
+		$query = str_replace( 'NOW()', 'datetime(\'now\')', $query );
+		$query = str_replace( 'now()', 'datetime(\'now\')', $query );
+		// remove table prefixes
+		$query = str_replace( '*PREFIX*', '', $query );
+		return $query;
+	}
+
+	/**
+	* @brief copys rows to migration.db from the main database
+	* @param $options array of options.
+	* @return bool
+	*/
+	public function copyRows( $options ) {
+		if( !array_key_exists( 'table', $options ) ) {
+			return false;
+		}
+
+		$return = array();
+
+		// Need to include 'where' in the query?
+		if( array_key_exists( 'matchval', $options ) && array_key_exists( 'matchcol', $options ) ) {
+
+			// If only one matchval, create an array
+			if(!is_array($options['matchval'])) {
+				$options['matchval'] = array( $options['matchval'] );
+			}
+
+			foreach( $options['matchval'] as $matchval ) {
+				// Run the query for this match value (where x = y value)
+				$sql = 'SELECT * FROM `*PREFIX*' . $options['table'] . '` WHERE `' . $options['matchcol'] . '` = ?';
+				$query = OC_DB::prepare( $sql );
+				$results = $query->execute( array( $matchval ) );
+				$newreturns = $this->insertData( $results, $options );
+				$return = array_merge( $return, $newreturns );
+			}
+
+		} else {
+			// Just get everything
+			$sql = 'SELECT * FROM `*PREFIX*' . $options['table'] . '`';
+			$query = OC_DB::prepare( $sql );
+			$results = $query->execute();
+			$return = $this->insertData( $results, $options );
+
+		}
+
+		return $return;
+
+	}
+
+	/**
+	* @brief saves a sql data set into migration.db
+	* @param $data a sql data set returned from self::prepare()->query()
+	* @param $options array of copyRows options
+	* @return void
+	*/
+	private function insertData( $data, $options ) {
+		$return = array();
+		// Foreach row of data to insert
+		while( $row = $data->fetchRow() ) {
+			// Now save all this to the migration.db
+			foreach($row as $field=>$value) {
+				$fields[] = $field;
+				$values[] = $value;
+			}
+
+			// Generate some sql
+			$sql = "INSERT INTO `" . $options['table'] . '` ( `';
+			$fieldssql = implode( '`, `', $fields );
+			$sql .= $fieldssql . "` ) VALUES( ";
+			$valuessql = substr( str_repeat( '?, ', count( $fields ) ), 0, -2 );
+			$sql .= $valuessql . " )";
+			// Make the query
+			$query = $this->prepare( $sql );
+			if( !$query ) {
+				OC_Log::write( 'migration', 'Invalid sql produced: '.$sql, OC_Log::FATAL );
+				return false;
+				exit();
+			} else {
+				$query->execute( $values );
+				// Do we need to return some values?
+				if( array_key_exists( 'idcol', $options ) ) {
+					// Yes we do
+					$return[] = $row[$options['idcol']];
+				} else {
+					// Take a guess and return the first field :)
+					$return[] = reset($row);
+				}
+			}
+			$fields = '';
+			$values = '';
+		}
+		return $return;
+	}
+
+	/**
+	* @brief adds a directory to the zip object
+	* @param $dir string path of the directory to add
+	* @param $recursive bool
+	* @param $internaldir string path of folder to add dir to in zip
+	* @return bool
+	*/
+	public function addDir( $dir, $recursive=true, $internaldir='' ) {
+		$dirname = basename($dir);
+		$this->zip->addEmptyDir($internaldir . $dirname);
+		$internaldir.=$dirname.='/';
+		if( !file_exists( $dir ) ) {
+			return false;
+		}
+		$dirhandle = opendir($dir);
+		if(is_resource($dirhandle)) {
+			while (false !== ( $file = readdir($dirhandle))) {
+
+				if (( $file != '.' ) && ( $file != '..' )) {
+
+					if (is_dir($dir . '/' . $file) && $recursive) {
+						$this->addDir($dir . '/' . $file, $recursive, $internaldir);
+					} elseif (is_file($dir . '/' . $file)) {
+						$this->zip->addFile($dir . '/' . $file, $internaldir . $file);
+					}
+				}
+			}
+			closedir($dirhandle);
+		} else {
+			OC_Log::write('admin_export', "Was not able to open directory: " . $dir, OC_Log::ERROR);
+			return false;
+		}
+		return true;
+	}
+
+	/**
+	* @brief adds a file to the zip from a given string
+	* @param $data string of data to add
+	* @param $path the relative path inside of the zip to save the file to
+	* @return bool
+	*/
+	public function addFromString( $data, $path ) {
+		// Create a temp file
+		$file = tempnam( get_temp_dir(). '/', 'oc_export_tmp_' );
+		$this->tmpfiles[] = $file;
+		if( !file_put_contents( $file, $data ) ) {
+			OC_Log::write( 'migation', 'Failed to save data to a temporary file', OC_Log::ERROR );
+			return false;
+		}
+		// Add file to the zip
+		$this->zip->addFile( $file, $path );
+		return true;
+	}
+
+	/**
+	* @brief closes the zip, removes temp files
+	* @return bool
+	*/
+	public function finish() {
+		if( !$this->zip->close() ) {
+			OC_Log::write( 'migration',
+				'Failed to write the zip file with error: '.$this->zip->getStatusString(),
+				OC_Log::ERROR );
+			return false;
+		}
+		$this->cleanup();
+		return true;
+	}
+
+		/**
+	* @brief cleans up after the zip
+	*/
+	private function cleanup() {
+		// Delete tmp files
+		foreach($this->tmpfiles as $i) {
+			unlink( $i );
+		}
+	}
+}