<?php
/*
This class is used from the popular plugin wordpress database backup authored by Austin Matzko http://www.ilfilosofo.com/blog/
Development continued from that done by Skippy (http://www.skippy.net/)
Much of this was modified from Mark Ghosh's One Click Backup, which
in turn was derived from phpMyAdmin.
Many thanks to Owen (http://asymptomatic.net/wp/) for his patch
http://dev.wp-plugins.org/ticket/219
Copyright 2007 Austin Matzko (email : if.website at gmail.com)
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
define('ROWS_PER_SEGMENT', 100);
class wpauBackup extends wpauHelper {
var $backup_complete = false;
var $isFileWritten = false;
var $backup_file;
var $backup_dir;
var $backup_errors = array();
function gzip() {
return function_exists('gzopen');
}
function wpauBackup($backup_dir) {
global $table_prefix, $wpdb;
$table_prefix = ( isset( $table_prefix ) ) ? $table_prefix : $wpdb->prefix;
if ( isset( $wpdb->link2cat ) )
$this->core_table_names = explode(',',"$wpdb->categories,$wpdb->comments,$wpdb->link2cat,$wpdb->links,$wpdb->options,$wpdb->post2cat,$wpdb->postmeta,$wpdb->posts,$wpdb->users,$wpdb->usermeta");
else
$this->core_table_names = explode(',',"$wpdb->categories,$wpdb->comments,$wpdb->linkcategories,$wpdb->links,$wpdb->options,$wpdb->post2cat,$wpdb->postmeta,$wpdb->posts,$wpdb->users,$wpdb->usermeta");
$this->backup_dir = trailingslashit($backup_dir);
}
function perform_backup($automated = false) {
// are we backing up any other tables?
$also_backup = array();
if (isset($_POST['other_tables'])) {
$also_backup = $_POST['other_tables'];
}
$core_tables = $_POST['core_tables'];
if($automated) {
$core_tables = $this->core_table_names;
}
$this->backup_file = $this->db_backup($core_tables, $also_backup);
if (FALSE !== $this->backup_file) {
$this->backup_complete = true;
return true;
}
else
return false;
}
/**
* Better addslashes for SQL queries.
* Taken from phpMyAdmin.
*/
function sql_addslashes($a_string = '', $is_like = FALSE) {
if ($is_like) $a_string = str_replace('\\', '\\\\\\\\', $a_string);
else $a_string = str_replace('\\', '\\\\', $a_string);
return str_replace('\'', '\\\'', $a_string);
}
/**
* Add backquotes to tables and db-names in
* SQL queries. Taken from phpMyAdmin.
*/
function backquote($a_name) {
if (!empty($a_name) && $a_name != '*') {
if (is_array($a_name)) {
$result = array();
reset($a_name);
while(list($key, $val) = each($a_name))
$result[$key] = '`' . $val . '`';
return $result;
} else {
return '`' . $a_name . '`';
}
} else {
return $a_name;
}
}
function open($filename = '', $mode = 'w') {
if ('' == $filename) return false;
if ($this->gzip())
$fp = @gzopen($filename, $mode);
else
$fp = @fopen($filename, $mode);
return $fp;
}
function close($fp) {
if ($this->gzip())
gzclose($fp);
else
fclose($fp);
}
function stow($query_line) {
if ($this->gzip()) {
if(@gzwrite($this->fp, $query_line) === FALSE) {
$this->backup_error(__('There was an error writing a line to the backup script:','wp-db-backup'));
$this->backup_error(' ' . $query_line);
}
} else {
if(@fwrite($this->fp, $query_line) === FALSE) {
$this->backup_error(__('There was an error writing a line to the backup script:','wp-db-backup'));
$this->backup_error(' ' . $query_line);
}
}
}
function backup_error($err) {
if(count($this->backup_errors) < 20)
$this->backup_errors[] = $err;
elseif(count($this->backup_errors) == 20)
$this->backup_errors[] = __('Subsequent errors have been omitted from this log.','wp-db-backup');
}
/**
* Taken partially from phpMyAdmin and partially from
* Alain Wolf, Zurich - Switzerland
* Website: http://restkultur.ch/personal/wolf/scripts/db_backup/
* Modified by Scott Merril (http://www.skippy.net/)
* to use the WordPress $wpdb object
*/
function backup_table($table, $segment = 'none') {
global $wpdb;
if('' == $table) {
return;
}
$table_structure = $wpdb->get_results("DESCRIBE $table");
if (! $table_structure) {
$this->backup_error(__('Error getting table details','wp-db-backup') . ": $table");
return FALSE;
}
if(($segment == 'none') || ($segment == 0)) {
// Add SQL statement to drop existing table
$this->stow("\n\n");
$this->stow("#\n");
$this->stow("# Delete any existing table " . $this->backquote($table) . "\n");
$this->stow("#\n");
$this->stow("\n");
$this->stow("DROP TABLE IF EXISTS " . $this->backquote($table) . ";\n");
// Table structure
// Comment in SQL-file
$this->stow("\n\n");
$this->stow("#\n");
$this->stow("# Table structure of table " . $this->backquote($table) . "\n");
$this->stow("#\n");
$this->stow("\n");
$create_table = $wpdb->get_results("SHOW CREATE TABLE $table", ARRAY_N);
if (FALSE === $create_table) {
$this->backup_error(sprintf(__("Error with SHOW CREATE TABLE for %s.",'wp-db-backup'), $table));
$this->stow("#\n# Error with SHOW CREATE TABLE for $table!\n#\n");
}
$this->stow($create_table[0][1] . ' ;');
if (FALSE === $table_structure) {
$this->backup_error(sprintf(__("Error getting table structure of %s",'wp-db-backup'), $table));
$this->stow("#\n# Error getting table structure of $table!\n#\n");
}
// Comment in SQL-file
$this->stow("\n\n");
$this->stow("#\n");
$this->stow('# Data contents of table ' . $this->backquote($table) . "\n");
$this->stow("#\n");
}
if(($segment == 'none') || ($segment >= 0)) {
$ints = array();
foreach ($table_structure as $struct) {
if ( (0 === strpos($struct->Type, 'tinyint')) ||
(0 === strpos(strtolower($struct->Type), 'smallint')) ||
(0 === strpos(strtolower($struct->Type), 'mediumint')) ||
(0 === strpos(strtolower($struct->Type), 'int')) ||
(0 === strpos(strtolower($struct->Type), 'bigint')) ||
(0 === strpos(strtolower($struct->Type), 'timestamp')) ) {
$ints[strtolower($struct->Field)] = "1";
}
}
// Batch by $row_inc
if($segment == 'none') {
$row_start = 0;
$row_inc = ROWS_PER_SEGMENT;
} else {
$row_start = $segment * ROWS_PER_SEGMENT;
$row_inc = ROWS_PER_SEGMENT;
}
do {
if ( !ini_get('safe_mode')) @set_time_limit(15*60);
$table_data = $wpdb->get_results("SELECT * FROM $table LIMIT {$row_start}, {$row_inc}", ARRAY_A);
/*
if (FALSE === $table_data) {
$wp_backup_error .= "Error getting table contents from $table\r\n";
fwrite($fp, "#\n# Error getting table contents fom $table!\n#\n");
}
*/
$entries = 'INSERT INTO ' . $this->backquote($table) . ' VALUES (';
// \x08\\x09, not required
$search = array("\x00", "\x0a", "\x0d", "\x1a");
$replace = array('\0', '\n', '\r', '\Z');
if($table_data) {
foreach ($table_data as $row) {
$values = array();
foreach ($row as $key => $value) {
if ($ints[strtolower($key)]) {
$values[] = $value;
} else {
$values[] = "'" . str_replace($search, $replace, $this->sql_addslashes($value)) . "'";
}
}
$this->stow(" \n" . $entries . implode(', ', $values) . ') ;');
}
$row_start += $row_inc;
}
} while((count($table_data) > 0) and ($segment=='none'));
}
if(($segment == 'none') || ($segment < 0)) {
// Create footer/closing comment in SQL-file
$this->stow("\n");
$this->stow("#\n");
$this->stow("# End of data contents of table " . $this->backquote($table) . "\n");
$this->stow("# --------------------------------------------------------\n");
$this->stow("\n");
}
} // end backup_table()
function return_bytes($val) {
$val = trim($val);
$last = strtolower($val{strlen($val)-1});
switch($last) {
// The 'G' modifier is available since PHP 5.1.0
case 'g':
$val *= 1024;
case 'm':
$val *= 1024;
case 'k':
$val *= 1024;
}
return $val;
}
function db_backup($core_tables, $other_tables) {
global $table_prefix, $wpdb;
$datum = date("Ymd_B");
$wp_backup_filename = DB_NAME . "_$table_prefix$datum.sql";
if ($this->gzip())
$wp_backup_filename .= '.gz';
if (is_writable(ABSPATH . $this->backup_dir)) {
$this->fp = $this->open(ABSPATH . $this->backup_dir . $wp_backup_filename);
if(!$this->fp) {
$this->backup_error(__('Could not open the backup file for writing!','wp-db-backup'));
return false;
}
} else {
$this->backup_error(__('The backup directory is not writeable!','wp-db-backup'));
return false;
}
//Begin new backup of MySql
$this->stow("# WordPress MySQL database backup\n");
$this->stow("#\n");
$this->stow("# Generated: " . date("l j. F Y H:i T") . "\n");
$this->stow("# Hostname: " . DB_HOST . "\n");
$this->stow("# Database: " . $this->backquote(DB_NAME) . "\n");
$this->stow("# --------------------------------------------------------\n");
if ( (is_array($other_tables)) && (count($other_tables) > 0) )
$tables = array_merge($core_tables, $other_tables);
else
$tables = $core_tables;
foreach ($tables as $table) {
// Increase script execution time-limit to 15 min for every table.
if ( !ini_get('safe_mode')) @set_time_limit(15*60);
// Create the SQL statements
$this->stow("# --------------------------------------------------------\n");
$this->stow("# Table: " . $this->backquote($table) . "\n");
$this->stow("# --------------------------------------------------------\n");
$this->backup_table($table);
}
$this->close($this->fp);
if (count($this->backup_errors)) {
return false;
} else {
return $wp_backup_filename;
}
} //wp_db_backup
function backup_menu() {
global $table_prefix, $wpdb;
$feedback = '';
$WHOOPS = FALSE;
// did we just do a backup? If so, let's report the status
if ( $this->backup_complete ) {
$feedback = '<div class="updated"><p>' . __('Backup Successful','wp-db-backup') . '!';
$file = $this->backup_file;
switch($_POST['deliver']) {
case 'http':
$feedback .= '<br />' . sprintf(__('Your backup file: <a href="%1s">%2s</a> should begin downloading shortly.','wp-db-backup'), get_option('siteurl') . "/{$this->backup_dir}{$this->backup_file}", $this->backup_file);
break;
case 'smtp':
if (! is_email($_POST['backup_recipient'])) {
$feedback .= get_option('admin_email');
} else {
$feedback .= $_POST['backup_recipient'];
}
$feedback = '<br />' . sprintf(__('Your backup has been emailed to %s','wp-db-backup'), $feedback);
break;
case 'none':
$feedback .= '<br />' . __('Your backup file has been saved on the server. If you would like to download it now, right click and select "Save As"','wp-db-backup');
$feedback .= ':<br /> <a href="' . get_option('siteurl') . "/{$this->backup_dir}$file\">$file</a> : " . sprintf(__('%s bytes','wp-db-backup'), filesize(ABSPATH . $this->backup_dir . $file));
}
$feedback .= '</p></div>';
}
if (count($this->backup_errors)) {
$feedback .= '<div class="updated error">' . __('The following errors were reported:','wp-db-backup') . "<pre>";
foreach($this->backup_errors as $error) {
$feedback .= "{$error}\n"; //Errors are already localized
}
$feedback .= "</pre></div>";
}
// did we just save options for wp-cron?
if ( (function_exists('wp_schedule_event') || function_exists('wp_cron_init'))
&& isset($_POST['wp_cron_backup_options']) ) :
if ( function_exists('wp_schedule_event') ) {
wp_clear_scheduled_hook( 'wp_db_backup_cron' ); // unschedule previous
$scheds = (array) wp_get_schedules();
$name = strval($_POST['wp_cron_schedule']);
$interval = ( isset($scheds[$name]['interval']) ) ?
(int) $scheds[$name]['interval'] : 0;
update_option('wp_cron_backup_schedule', $name, FALSE);
if ( ! 0 == $interval ) {
wp_schedule_event(time() + $interval, $name, 'wp_db_backup_cron');
}
}
else {
update_option('wp_cron_backup_schedule', intval($_POST['cron_schedule']), FALSE);
}
update_option('wp_cron_backup_tables', $_POST['wp_cron_backup_tables']);
if (is_email($_POST['cron_backup_recipient'])) {
update_option('wp_cron_backup_recipient', $_POST['cron_backup_recipient'], FALSE);
}
$feedback .= '<div class="updated"><p>' . __('Scheduled Backup Options Saved!','wp-db-backup') . '</p></div>';
endif;
$other_tables = array();
$also_backup = array();
// Get complete db table list
$all_tables = $wpdb->get_results("SHOW TABLES", ARRAY_N);
$all_tables = array_map(create_function('$a', 'return $a[0];'), $all_tables);
// Get list of WP tables that actually exist in this DB (for 1.6 compat!)
$wp_backup_default_tables = array_intersect($all_tables, $this->core_table_names);
// Get list of non-WP tables
$other_tables = array_diff($all_tables, $wp_backup_default_tables);
if ('' != $feedback)
echo $feedback;
// Give the new dirs the same perms as wp-content.
$stat = stat( ABSPATH . 'wp-content' );
$dir_perms = $stat['mode'] & 0000777; // Get the permission bits.
if ( !file_exists( ABSPATH . $this->backup_dir) ) {
if ( @ mkdir( ABSPATH . $this->backup_dir) ) {
@ chmod( ABSPATH . $this->backup_dir, $dir_perms);
} else {
echo '<div class="updated error"><p style="text-align:center">' . __('WARNING: Your wp-content directory is <strong>NOT</strong> writable! We can not create the backup directory.','wp-db-backup') . '<br />' . ABSPATH . $this->backup_dir . "</p></div>";
$WHOOPS = TRUE;
}
}
if ( !is_writable( ABSPATH . $this->backup_dir) ) {
echo '<div class="updated error"><p style="text-align:center">' . __('WARNING: Your backup directory is <strong>NOT</strong> writable! We can not create the backup directory.','wp-db-backup') . '<br />' . ABSPATH . "</p></div>";
}
?><div class='wrap'>
<h2><?php _e('Создание резервной копии','wp-db-backup') ?></h2>
<form method="post" action="?page=<?php echo WPAU_PAGE ?>&task=backupdb">
<fieldset class="options"><legend><?php _e('Таблицы','wp-db-backup') ?></legend>
<table align="center" cellspacing="5" cellpadding="5"><tr><td width="50%" align="left" class="alternate" valign="top">
<?php _e('Эти основные таблицы WordPress будут в резервной копии:','wp-db-backup') ?><br /><ul><?php
foreach ($wp_backup_default_tables as $table) {
echo "<li><input type='hidden' name='core_tables[]' value='$table' />$table</li>";
}
?></ul></td><td width="50%" align="left" valign="top"><?php
if (count($other_tables) > 0) {
echo __('Вы также можете включить и эти таблицы:','wp-db-backup') . ' <br />';
foreach ($other_tables as $table) {
echo "<label style=\"display:block;\"><input type='checkbox' name='other_tables[]' value='{$table}' /> {$table}</label>";
}
}
?></td></tr></table></fieldset>
<div align="center">
<fieldset>
<input type="Submit" name="wpaudbbackup" value="Создать резервную копию" />
</fieldset>
</div>
<?php
echo '</form>';
echo '</div>';
} // end wp_backup_menu()
function user_can_backup() {
return current_user_can('import');
}
function validate_file($file) {
if (false !== strpos($file, '..'))
die(__("Cheatin' uh ?",'wp-db-backup'));
if (false !== strpos($file, './'))
die(__("Cheatin' uh ?",'wp-db-backup'));
if (':' == substr($file, 1, 1))
die(__("Cheatin' uh ?",'wp-db-backup'));
}
function zip_backup($fileName) {
//require_once('lib/pclzip.lib.php');
//echo "In here $fileName";
$archiveName = ABSPATH.$this->backup_dir. $fileName;
$this->logMessage('Создаем архив с именем '.$archiveName.'<br/ >');
$archiver = new PclZip($archiveName);
$list = $archiver->create(ABSPATH.$this->backup_dir.$this->backup_file);
if ($list == 0) {
$this->logMessage('Не огу заархивировать файлы ' .$archiver->errorInfo(true));
$this->isFileWritten = false;
return false;
}
else {
$this->logMessage('<br /><strong>Все прошло удачно</strong>. Резервная копия базы данных находится по адресу '. $archiveName .'<br /><br />');
$this->isFileWritten = true;
if(!$basedir = @opendir(ABSPATH.$this->backup_dir)) {
@chmod($archiveName, 0755);
@closedir($this->backupPath);
}
else {
exec("chmod 755 $archiveName");
}
unlink(ABSPATH.$this->backup_dir.$this->backup_file);
return true;
}
unset($archiver);
}
}
?>