* @copyright (c) 2003-8 by Ralf Becker * @version $Id$ */ /** * DB independent backup and restore of eGW's DB */ class db_backup { /** * replaces backslashes, used in cvs_split */ const BACKSLASH_TOKEN = '##!!**bAcKsLaSh**!!##'; /** * Configuration table. */ const TABLE = 'egw_config'; /** * Reference to schema_proc * * @var schema_proc */ var $schema_proc; /** * Reference to ADOdb (connection) object * * @var ADOConnection */ var $adodb; /** * DB schemas, as array tablename => schema * * @var array */ var $schemas = array(); /** * Tables to exclude from the backup: sessions, diverse caches which get automatic rebuild * * @var array */ var $exclude_tables = array( 'egw_sessions','egw_app_sessions','phpgw_sessions','phpgw_app_sessions', // eGW's session-tables 'phpgw_anglemail', // email's cache 'egw_felamimail_cache','egw_felamimail_folderstatus','phpgw_felamimail_cache','phpgw_felamimail_folderstatus', // felamimail's cache 'egw_phpfreechat', // as of the fieldnames of the table a restore would fail within egroupware, and chatcontent is of no particular intrest ); /** * regular expression to identify system-tables => ignored for schema+backup * * @var string|boolean */ var $system_tables = false; /** * Regular expression to identify eGW tables => if set only they are used * * @var string|boolean */ var $egw_tables = false; /** * Backup directory. * * @var string */ var $backup_dir; /** * Minimum number of backup files to keep. Zero for: Disable cleanup. * * @var integer */ var $backup_mincount; /** * Backup Files config value, will be overwritten by the availability of the ZibArchive libraries * * @var boolean */ var $backup_files = false ; /** * Constructor */ function __construct() { if (isset($GLOBALS['egw_setup']) && is_object($GLOBALS['egw_setup']) && !isset($GLOBALS['egw_setup']->db)) { $GLOBALS['egw_setup']->loaddb(); // we run inside setup, but db object is not loaded } if (isset($GLOBALS['egw_setup']->oProc) && is_object($GLOBALS['egw_setup']->oProc)) // schema_proc already instanciated, use it { $this->schema_proc = $GLOBALS['egw_setup']->oProc; } else { $this->schema_proc = new schema_proc(); } $this->db = $this->schema_proc->m_odb; $this->adodb = $this->db->Link_ID; if (isset($GLOBALS['egw_setup']) && is_object($GLOBALS['egw_setup'])) // called from setup { if ($GLOBALS['egw_setup']->config_table && $GLOBALS['egw_setup']->table_exist(array($GLOBALS['egw_setup']->config_table))) { $this->db->query("SELECT config_value FROM {$GLOBALS['egw_setup']->config_table} WHERE config_app='phpgwapi' AND config_name='backup_dir'",__LINE__,__FILE__); $this->db->next_record(); if (!($this->backup_dir = $this->db->f(0))) { $this->db->query("SELECT config_value FROM {$GLOBALS['egw_setup']->config_table} WHERE config_app='phpgwapi' AND config_name='files_dir'",__LINE__,__FILE__); $this->db->next_record(); $this->backup_dir = $this->db->f(0).'/db_backup'; } $this->db->query("SELECT config_value FROM {$GLOBALS['egw_setup']->config_table} WHERE config_app='phpgwapi' AND config_name='files_dir'",__LINE__,__FILE__); $this->db->next_record(); if (!($this->files_dir = $this->db->f(0))) { error_log(__METHOD__."->"."No files Directory set/found"); } $this->db->query("SELECT config_value FROM {$GLOBALS['egw_setup']->config_table} WHERE config_app='phpgwapi' AND config_name='system_charset'",__LINE__,__FILE__); $this->db->next_record(); $this->charset = $this->db->f(0); if (!$this->charset) { $this->db->query("SELECT content FROM {$GLOBALS['egw_setup']->lang_table} WHERE message_id='charset' AND app_name='common' AND lang!='en'",__LINE__,__FILE__); $this->db->next_record(); $this->charset = $this->db->f(0); } $this->db->select($GLOBALS['egw_setup']->applications_table,'app_version',array('app_name'=>'phpgwapi'),__LINE__,__FILE__); $this->api_version = $this->db->next_record() ? $this->db->f(0) : false; /* Backup settings */ $this->db->query("SELECT config_value FROM {$GLOBALS['egw_setup']->config_table} WHERE config_app='phpgwapi' AND config_name='backup_mincount'",__LINE__,__FILE__); $this->db->next_record(); $this->backup_mincount = $this->db->f(0); // backup files too $this->db->query("SELECT config_value FROM {$GLOBALS['egw_setup']->config_table} WHERE config_app='phpgwapi' AND config_name='backup_files'",__LINE__,__FILE__); $this->db->next_record(); $this->backup_files = (bool)$this->db->f(0); } if (!$this->charset) $this->charset = 'iso-8859-1'; } else // called from eGW { $this->schema_proc = CreateObject('phpgwapi.schema_proc'); if (!($this->backup_dir = $GLOBALS['egw_info']['server']['backup_dir'])) { $this->backup_dir = $GLOBALS['egw_info']['server']['files_dir'].'/db_backup'; } $this->files_dir = $GLOBALS['egw_info']['server']['files_dir']; $this->backup_mincount = $GLOBALS['egw_info']['server']['backup_mincount']; $this->backup_files = $GLOBALS['egw_info']['server']['backup_files']; $this->charset = $GLOBALS['egw']->translation->charset(); $this->api_version = $GLOBALS['egw_info']['apps']['phpgwapi']['version']; } // Set a default value if not set. if (!isset($this->backup_mincount)) { $this->backup_mincount = 0; // Disabled if not set } if (!isset($this->backup_files)) { $this->backup_files = false; // Disabled if not set } if (!is_dir($this->backup_dir) && is_writable(dirname($this->backup_dir))) { mkdir($this->backup_dir); } switch($this->db->Type) { case 'sapdb': case 'maxdb': //$this->system_tables = '/^(sql_cursor.*|session_roles|activeconfiguration|cachestatistics|commandcachestatistics|commandstatistics|datastatistics|datavolumes|hotstandbycomponent|hotstandbygroup|instance|logvolumes|machineconfiguration|machineutilization|memoryallocatorstatistics|memoryholders|omslocks|optimizerinformation|sessions|snapshots|spinlockstatistics|version)$/i'; $this->egw_tables = '/^(egw_|phpgw_|g2_)/i'; break; } } /** * Opens the backup-file using the highest available compression * * @param $name=false string/boolean filename to use, or false for the default one * @param $reading=false opening for reading ('rb') or writing ('wb') * @return string/resource/zip error-msg of file-handle */ function fopen_backup($name=false,$reading=false) { //echo "function fopen_backup($name,$reading)
"; // ! if (!$name) { //echo '-> !$name
'; // ! if (!$this->backup_dir || !is_writable($this->backup_dir)) { //echo ' -> !$this->backup_dir || !is_writable($this->backup_dir)
'; // ! return lang("backupdir '%1' is not writeable by the webserver",$this->backup_dir); } $name = $this->backup_dir.'/db_backup-'.date('YmdHi'); } else // remove the extension, to use the correct wrapper based on the extension { //echo '-> else
'; // ! $name = preg_replace('/\.(bz2|gz)$/i','',$name); } $mode = $reading ? 'rb' : 'wb'; list( , $type) = explode('.', basename($name)); if($type == 'zip' && $reading && $this->backup_files) { //echo '-> $type == "zip" && $reading
'; // ! if(!class_exists('ZipArchive', false)) { $this->backup_files = false; //echo ' -> (new ZipArchive) == NULL
'; // ! return lang("Cant open %1, needs ZipArchive", $name)."
\n"; } if(!($f = fopen($name, $mode))) { //echo ' -> !($f = fopen($name, $mode))
'; // ! $lang_mode = $reading ? lang("reading") : lang("writing"); return lang("Cant open '%1' for %2", $name, $lang_mode)."
"; } return $f; } if(class_exists('ZipArchive', false) && !$reading && $this->backup_files) { //echo '-> (new ZipArchive) != NULL && !$reading; '.$name.'
'; // ! if(!($f = fopen($name, $mode))) { //echo ' -> !($f = fopen($name, $mode))
'; // ! $lang_mode = $reading ? lang("reading") : lang("writing"); return lang("Cant open '%1' for %2", $name, $lang_mode)."
"; } return $f; } if(!($f = fopen("compress.bzip2://$name.bz2", $mode)) && !($f = fopen("compress.zlib://$name.gz",$mode)) && !($f = fopen($name,$mode)) ) { //echo '-> !($f = fopen("compress.bzip2://$name.bz2", $mode))
'; // ! $lang_mode = $reading ? lang("reading") : lang("writing"); return lang("Cant open '%1' for %2", $name, $lang_mode)."
"; } return $f; } /** * Remove old backups, leaving at least * backup_mincount backup files in place. Only backup files with * the regular name scheme are taken into account. * * @param files_return Fills a given array of file names to display (if given). */ function housekeeping(&$files_return = false) { /* Stop housekeeping in case it is disabled. */ if ($this->backup_mincount == 0) { return; } /* Search the backup directory for matching files. */ $handle = @opendir($this->backup_dir); $files = array(); while($handle && ($file = readdir($handle))) { /* Filter for only the files with the regular name (un-renamed). * Leave special backup files (renamed) in place. * Note that this also excludes "." and "..". */ if (preg_match("/^db_backup-[0-9]{12}(\.bz2|\.gz|\.zip|)$/",$file)) { $files[filectime($this->backup_dir.'/'.$file)] = $file; } } if ($handle) closedir($handle); /* Sort the files by ctime. */ krsort($files); $count = 0; foreach($files as $ctime => $file) { if ($count >= $this->backup_mincount)// { $ret = unlink($this->backup_dir.'/'.$file); if (($ret) && (is_array($files_return))) { array_push($files_return, $file); } } $count ++; } } /** * Save the housekeeping configuration in the database and update the local variables. * * @param mincount Minimum number of backups to keep. */ function saveConfig($config_values) { if (!is_array($config_values)) { error_log(__METHOD__." unable to save backup config values, wrong type of parameter passed."); return false; } //_debug_array($config_values); $minCount = $config_values['backup_mincount']; $backupFiles = (int)$config_values['backup_files']; /* minCount */ $this->db->insert( self::TABLE, array( 'config_value' => $minCount, ), array( 'config_app' => 'phpgwapi', 'config_name' => 'backup_mincount', ), __LINE__, __FILE__); /* backup files flag */ $this->db->insert(self::TABLE,array('config_value' => $backupFiles),array('config_app' => 'phpgwapi','config_name' => 'backup_files'),__LINE__,__FILE__); $this->backup_mincount = $minCount; $this->backup_files = (bool)$backupFiles; // Update session cache $GLOBALS['egw']->invalidate_session_cache(); } /** * Backup all data in the form of a (compressed) csv file * * @param resource $f file opened with fopen for reading * @param boolean $convert_to_system_charset=false convert the restored data to the selected system-charset * @param string $filename='' gives the file name which is used in case of a zip archive. * * @returns An empty string or an error message in case of failure. */ function restore($f,$convert_to_system_charset=false,$filename='') { @set_time_limit(0); ini_set('auto_detect_line_endings',true); $this->db->transaction_begin(); // drop all existing tables foreach($this->adodb->MetaTables('TABLES') as $table) { if ($this->system_tables && preg_match($this->system_tables,$table) || $this->egw_tables && !preg_match($this->egw_tables,$table)) { continue; } $this->schema_proc->DropTable($table); } // it could be an old backup list( , $type) = explode('.', basename($filename)); $dir = $this->files_dir; // $GLOBALS['egw_info']['server']['files_dir']; // we may have to clean up old backup - left overs if (is_dir($dir.'/database_backup')) { self::remove_dir_content($dir.'/database_backup/'); rmdir($dir.'/database_backup'); } $list = array(); $name = ""; $zip = NULL; $_f = NULL; if($type == 'zip') { // has already been verified to be available in fopen_backup $zip = new ZipArchive; if(($zip->open($filename)) !== TRUE) { return lang("Cant open '%1' for %2", $filename, lang("reading"))."
\n"; } self::remove_dir_content($dir); // removes the files-dir $zip->extractTo($dir); $_f = $f; $list = $this->get_file_list($dir.'/database_backup/'); $name = $dir.'/database_backup/'.basename($list[0]); if(!($f = fopen($name, 'rb'))) { return lang("Cant open '%1' for %2", $filename, lang("reading"))."
\n"; } } $table = False; $n = 0; while(!feof($f)) { $line = trim(fgets($f)); ++$n; if (empty($line)) continue; if (substr($line,0,9) == 'version: ') { $api_version = trim(substr($line,9)); continue; } if (substr($line,0,9) == 'charset: ') { $charset = trim(substr($line,9)); // needed if mbstring.func_overload > 0, else eg. substr does not work with non ascii chars @ini_set('mbstring.internal_encoding',$charset); // check if we really need to convert the charset, as it's not perfect and can do some damage if ($convert_to_system_charset && !strcasecmp($convert_to_system_charset,$charset)) { $convert_to_system_charset = false; // no conversation necessary } // set the DB's client encoding (for mysql only if api_version >= 1.0.1.019) if ((!$convert_to_system_charset || $this->db->capabilities['client_encoding']) && (substr($this->db->Type,0,5) != 'mysql' || !is_object($GLOBALS['egw_setup']) || $api_version && !$GLOBALS['egw_setup']->alessthanb($api_version,'1.0.1.019'))) { $this->db->Link_ID->SetCharSet($charset); if (!$convert_to_system_charset) { $this->schema_proc->system_charset = $charset; // so schema_proc uses it for the creation of the tables } } continue; } if (substr($line,0,8) == 'schema: ') { // create the tables in the backup set $this->schemas = unserialize(trim(substr($line,8))); foreach($this->schemas as $table_name => $schema) { echo "
$table_name => ".self::write_array($schema,1)."
\n"; $this->schema_proc->CreateTable($table_name,$schema); } // make the schemas availible for the db-class $GLOBALS['egw_info']['apps']['all-apps']['table_defs'] = &$this->schemas; continue; } if (substr($line,0,7) == 'table: ') { $table = substr($line,7); $cols = self::csv_split($line=fgets($f)); ++$n; if (feof($f)) break; continue; } if ($convert_to_system_charset && !$this->db->capabilities['client_encoding']) { if ($GLOBALS['egw_setup']) { if (!is_object($GLOBALS['egw_setup']->translation->sql)) { $GLOBALS['egw_setup']->translation->setup_translation_sql(); } $translation =& $GLOBALS['egw_setup']->translation->sql; } else { $translation =& $GLOBALS['egw']->translation; } } if ($table) // do we already reached the data part { $import = true; $data = self::csv_split($line,$cols); if ($table == 'egw_async' && in_array('##last-check-run##',$data)) { echo '

'.lang("Line %1: '%2'
csv data does contain ##last-check-run## of table %3 ==> ignored",$n,$line,$table)."

\n"; echo 'data=
'.print_r($data,true)."
\n"; $import = false; } if (in_array($table,$this->exclude_tables)) { echo '

'.lang("Table %1 is excluded from backup and restore. Data will not be restored.",$table)."

\n"; $import = false; // dont restore data of excluded tables } if ($import) { if (count($data) == count($cols)) { if ($convert_to_system_charset && !$this->db->capabilities['client_encoding']) { $translation->convert($data,$charset); } $this->db->insert($table,$data,False,__LINE__,__FILE__,'all-apps',true); } else { echo '

'.lang("Line %1: '%2'
csv data does not match column-count of table %3 ==> ignored",$n,$line,$table)."

\n"; echo 'data=
'.print_r($data,true)."
\n"; } } } } // updated the sequences, if the DB uses them foreach($this->schemas as $table => $schema) { foreach($schema['fd'] as $column => $definition) { if ($definition['type'] == 'auto') { $this->schema_proc->UpdateSequence($table,$column); break; // max. one per table } } } if ($convert_to_system_charset) // store the changed charset { $this->db->insert($GLOBALS['egw_setup']->config_table,array( 'config_value' => $GLOBALS['egw_setup']->system_charset, ),array( 'config_app' => 'phpgwapi', 'config_name' => 'system_charset', ),__LINE__,__FILE__); } // zip? if($type == 'zip') { fclose($f); $f = $save_f; unlink($name); rmdir($dir.'/database_backup'); } if (!$this->db->transaction_commit()) { return lang('Restore failed'); } return ''; } /** * Removes a dir, no matter whether it is empty or full * * @param strin $dir */ private static function remove_dir_content($dir) { $list = scandir($dir); while($file = $list[0]) { if(is_dir($file) && $file != '.' && $file != '..') self::remove_dir_content($dir.'/'.$file); if(is_file($file) && $file != '.' && $file != '..') unlink($dir.'/'.$file); array_shift($list); } //rmdir($dir); // dont remove own dir } /** * Split one line of a csv file into an array and does all unescaping * * @param string $line line to split * @param array $keys=null keys to use or null to use numeric ones * @return array */ public static function csv_split($line,$keys=null) { $fields = explode(',',trim($line)); $str_pending = False; $n = 0; foreach($fields as $i => $field) { if ($str_pending !== False) { $field = $str_pending.','.$field; $str_pending = False; } $key = $keys ? $keys[$n] : $n; if ($field[0] == '"') { if (substr($field,-1) !== '"' || $field === '"' || !preg_match('/[^\\\\]+(\\\\\\\\)*"$/',$field)) { $str_pending = $field; continue; } $arr[$key] = str_replace(self::BACKSLASH_TOKEN,'\\',str_replace(array('\\\\','\\n','\\r','\\"'),array(self::BACKSLASH_TOKEN,"\n","\r",'"'),substr($field,1,-1))); } elseif ($keys && strlen($field) > 24) { $arr[$key] = base64_decode($field); } else { $arr[$key] = $field == 'NULL' ? NULL : $field; } ++$n; } return $arr; } /** * escape data for csv */ public static function escape_data(&$data,$col,$defs) { if (is_null($data)) { $data = 'NULL'; } else { switch($defs[$col]['type']) { case 'int': case 'auto': case 'decimal': case 'date': case 'timestamp': break; case 'blob': $data = base64_encode($data); break; default: $data = '"'.str_replace(array('\\',"\n","\r",'"'),array('\\\\','\\n','\\r','\\"'),$data).'"'; break; } } } /** * Backup all data in the form of a (compressed) csv file * * @param f resource file opened with fopen for writing */ function backup($f) { //echo "function backup($f)
"; // ! @set_time_limit(0); $dir = $this->files_dir; // $GLOBALS['egw_info']['server']['files_dir']; // we may have to clean up old backup - left overs if (is_dir($dir.'/database_backup')) { self::remove_dir_content($dir.'/database_backup/'); rmdir($dir.'/database_backup'); } $file_list = array(); $name = $this->backup_dir.'/db_backup-'.date('YmdHi'); $filename = $name.'.zip'; $zippresent = false; if(class_exists('ZipArchive') && $this->backup_files) { $zip = new ZipArchive; if(is_object($zip)) { $zippresent = true; //echo '-> is_object($zip); '.$filename.'
'; // ! $res = $zip->open($filename, ZIPARCHIVE::CREATE); if($res !== TRUE) { //echo ' -> !$res
'; // ! return lang("Cant open '%1' for %2", $filename, lang("writing"))."
\n"; } $file_list = $this->get_file_list($dir); } } fwrite($f,"eGroupWare backup from ".date('Y-m-d H:i:s')."\n\n"); fwrite($f,"version: $this->api_version\n\n"); fwrite($f,"charset: $this->charset\n\n"); $this->schema_backup($f); // add the schema in a human readable form too /* not needed, already done by schema_backup foreach($this->adodb->MetaTables('TABLES') as $table) { if ($this->db->Type == 'sapdb' || $this->db->Type == 'maxdb') { $table = strtolower($table); } if (!($this->schemas[$table] = $this->schema_proc->GetTableDefinition($table))) { unset($this->schemas[$table]); } } */ fwrite($f,"\nschema: ".serialize($this->schemas)."\n"); foreach($this->schemas as $table => $schema) { if (in_array($table,$this->exclude_tables)) continue; // dont backup $first_row = true; $this->db->select($table,'*',false,__LINE__,__FILE__); while($row = $this->db->row(true)) { if ($first_row) { fwrite($f,"\ntable: $table\n".implode(',',array_keys($row))."\n"); $first_row = false; } array_walk($row,array('db_backup','escape_data'),$schema['fd']); fwrite($f,implode(',',$row)."\n"); } } if(!$zippresent) // save without files { if ($this->backup_files) { echo '
'.lang("Cant open %1, needs ZipArchive", $name)."
\n".'
'; } fclose($f); if (file_exists($name)) unlink($name); return TRUE; } // save files .... //echo $name.'
'; $zip->addFile($name, 'database_backup/'.basename($name)); $count = 1; foreach($file_list as $num => $file) { //echo substr($file,strlen($dir)+1).'
'; //echo $file.'
'; $zip->addFile($file,substr($file,strlen($dir)+1));//,substr($file); if(($count++) == 100) { // the file descriptor limit $zip->close(); if($zip = new ZipArchive()) { $zip->open($filename); $count =0; } } } $zip->close(); fclose($f); unlink($name); return true; } /** * gets a list of all files on $f * * @param string file $f * [@param int $cnt] * [@param string $path_name] * * @return array (list of files) */ function get_file_list($f, $cnt = 0, $path_name = "") { //chdir($f); //echo "Processing $f
"; if ($path_name =='') $path_name = $f; $tlist = scandir($f); $list = array(); $i = $cnt; while($file = $tlist[0]) // remove all '.' and '..' and transfer to $list { if($file == '.' || $file == '..') { array_shift($tlist); } else { if(is_dir($f.'/'.$file)) { $nlist = $this->get_file_list($f.'/'.$file, $i); $list += $nlist; $i += count($nlist); array_shift($tlist); } else { $list[$i++] = $path_name.'/'.array_shift($tlist); } } } return $list; } /** * Backup all schemas in the form of a setup/tables_current.inc.php file * * @param resource|boolean $f */ function schema_backup($f=False) { foreach($this->adodb->MetaTables('TABLES') as $table) { if ($this->system_tables && preg_match($this->system_tables,$table) || $this->egw_tables && !preg_match($this->egw_tables,$table)) { continue; } if ($this->db->Type == 'sapdb' || $this->db->Type == 'maxdb') { $table = strtolower($table); } if (!($this->schemas[$table] = $this->schema_proc->GetTableDefinition($table))) { unset($this->schemas[$table]); } if (($this->db->Type == 'sapdb' || $this->db->Type == 'maxdb') && $table == 'phpgw_anglemail') { // sapdb does not differ between text and blob $this->schemas[$table]['fd']['content']['type'] = 'blob'; } } $def = "\t\$phpgw_baseline = "; $def .= self::write_array($this->schemas,1); $def .= ";\n"; if ($f) { fwrite($f,$def); } else { $def = " $val) { if (!is_int($key)) { $def .= "'$key' => "; } if (is_array($val)) { $def .= self::write_array($val,$parent == 'fd' ? 0 : $depth,$key); } else { if (!$only_vals && $key === 'nullable') { $def .= $val ? 'True' : 'False'; } else { $def .= "'$val'"; } } if ($n < count($arr)-1) { $def .= ",$tabs".($tabs ? "\t" : ''); } ++$n; } $def .= "$tabs)"; return $def; } } /* $line = '"de","ranking","use \\"yes\\", or \\"no, prefession\\"","benützen Sie \\"yes\\" oder \\"no, Beruf\\""'; echo "

line='$line'

\n"; echo "
".print_r(db_backup::csv_split($line),true)."
\n"; */