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wp-db-backup.php
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<?php
/*
Plugin Name: WordPress Database Backup
Plugin URI: https://github.com/matzko/wp-db-backup
Description: On-demand backup of your WordPress database. Navigate to <a href="edit.php?page=wp-db-backup">Tools → Backup</a> to get started.
Author: Austin Matzko
Author URI: http://austinmatzko.com/
Version: 2.3.3
Copyright 2018 Austin Matzko (email : austin at pressedcode.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., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
*/
if ( ! defined('ABSPATH') ) {
die('Please do not load this file directly.');
}
$rand = substr( md5( md5( DB_PASSWORD ) ), -5 );
global $wpdbb_content_dir, $wpdbb_content_url;
$wpdbb_content_dir = ( defined('WP_CONTENT_DIR') ) ? WP_CONTENT_DIR : ABSPATH . 'wp-content';
$wpdbb_content_url = ( defined('WP_CONTENT_URL') ) ? WP_CONTENT_URL : get_option('siteurl') . '/wp-content';
if ( ! defined('ROWS_PER_SEGMENT') ) {
define('ROWS_PER_SEGMENT', 100);
}
/**
* Set MOD_EVASIVE_OVERRIDE to true
* and increase MOD_EVASIVE_DELAY
* if the backup stops prematurely.
*/
// define('MOD_EVASIVE_OVERRIDE', false);
if ( ! defined('MOD_EVASIVE_DELAY') ) {
define('MOD_EVASIVE_DELAY', '500');
}
class wpdbBackup {
var $backup_complete = false;
var $backup_file = '';
var $backup_filename;
var $core_table_names = array();
var $errors = array();
var $basename;
var $page_url;
var $referer_check_key;
var $version = '2.3.3';
function module_check() {
$mod_evasive = false;
if ( defined( 'MOD_EVASIVE_OVERRIDE' ) && true === MOD_EVASIVE_OVERRIDE ) return true;
if ( ! defined( 'MOD_EVASIVE_OVERRIDE' ) || false === MOD_EVASIVE_OVERRIDE ) return false;
if ( function_exists('apache_get_modules') )
foreach( (array) apache_get_modules() as $mod )
if ( false !== strpos($mod,'mod_evasive') || false !== strpos($mod,'mod_dosevasive') )
return true;
return false;
}
function __construct() {
global $table_prefix, $wpdb;
add_action('wp_ajax_save_backup_time', array(&$this, 'save_backup_time'));
add_action('init', array(&$this, 'init_textdomain'));
add_action('init', array(&$this, 'set_page_url'));
add_action('admin_init', array(&$this, 'update_notice_action'));
add_action('wp_db_backup_cron', array(&$this, 'cron_backup'));
add_action('wp_cron_daily', array(&$this, 'wp_cron_daily'));
add_filter('cron_schedules', array(&$this, 'add_sched_options'));
add_filter('wp_db_b_schedule_choices', array(&$this, 'schedule_choices'));
$table_prefix = ( isset( $table_prefix ) ) ? $table_prefix : $wpdb->prefix;
$datum = date("Ymd_B");
$this->backup_filename = DB_NAME . "_$table_prefix$datum.sql";
$possible_names = array(
'categories',
'commentmeta',
'comments',
'link2cat',
'linkcategories',
'links',
'options',
'post2cat',
'postmeta',
'posts',
'terms',
'term_taxonomy',
'term_relationships',
'users',
'usermeta',
);
foreach( $possible_names as $name ) {
if ( isset( $wpdb->{$name} ) ) {
$this->core_table_names[] = $wpdb->{$name};
}
}
$requested_temp_dir = sanitize_text_field($_GET['wp_db_temp_dir']);
$this->backup_dir = trailingslashit(apply_filters('wp_db_b_backup_dir', (isset($requested_temp_dir) && is_writable($requested_temp_dir)) ? $requested_temp_dir : get_temp_dir()));
$this->basename = 'wp-db-backup';
$this->referer_check_key = $this->basename . '-download_' . DB_NAME;
if (isset($_POST['do_backup'])) {
$this->wp_secure('fatal');
check_admin_referer($this->referer_check_key);
$this->can_user_backup('main');
// save exclude prefs
update_option('wp_db_backup_excs', array(
'revisions' => $this->get_revisions_to_exclude(),
'spam' => $this->get_spam_to_exclude()
));
switch($_POST['do_backup']) {
case 'backup':
add_action('init', array(&$this, 'perform_backup'));
break;
case 'fragments':
add_action('admin_menu', array(&$this, 'fragment_menu'));
break;
}
} elseif (isset($_GET['fragment'] )) {
$this->can_user_backup('frame');
add_action('init', array(&$this, 'init'));
} elseif (isset($_GET['backup'] )) {
$this->can_user_backup();
add_action('init', array(&$this, 'init'));
} else {
add_action('admin_menu', array(&$this, 'admin_menu'));
}
}
function init() {
$this->can_user_backup();
if (isset($_GET['backup'])) {
$via = isset($_GET['via']) ? sanitize_text_field($_GET['via']) : 'http';
$this->backup_file = sanitize_text_field($_GET['backup']);
$this->validate_file($this->backup_file);
switch($via) {
case 'smtp':
case 'email':
$success = $this->deliver_backup($this->backup_file, 'smtp', sanitize_text_field($_GET['recipient']), 'frame');
$this->error_display( 'frame' );
if ( $success ) {
echo '
<!-- ' . $via . ' -->
<script type="text/javascript"><!--\\
';
echo '
alert("' . __('Backup Complete!','wp-db-backup') . '");
window.onbeforeunload = null;
</script>
';
}
break;
default:
$success = $this->deliver_backup($this->backup_file, $via);
echo $this->error_display( 'frame', false );
if ( $success ) {
echo '
<script type="text/javascript">
window.parent.setProgress("' . __('Backup Complete!','wp-db-backup') . '");
</script>
';
}
}
exit;
}
if (isset($_GET['fragment'] )) {
list($table, $segment, $filename) = explode(':', sanitize_text_field($_GET['fragment']));
$this->validate_file($filename);
$this->backup_fragment($table, $segment, $filename);
}
die();
}
function init_textdomain() {
load_plugin_textdomain('wp-db-backup', str_replace(ABSPATH, '', dirname(__FILE__)), dirname(plugin_basename(__FILE__)));
}
function set_page_url() {
$query_args = array( 'page' => $this->basename );
if ( function_exists('wp_create_nonce') )
$query_args = array_merge( $query_args, array('_wpnonce' => wp_create_nonce($this->referer_check_key)) );
$base = ( function_exists('site_url') ) ? site_url('', 'admin') : get_option('siteurl');
$this->page_url = add_query_arg( $query_args, $base . '/wp-admin/edit.php');
}
/*
* Add a link to back up your database when doing a core upgrade.
*/
function update_notice_action() {
global $pagenow;
if (
(
isset($_REQUEST['action'])
&& ('upgrade-core' == $_REQUEST['action'])
)
|| (
!empty($pagenow) && ('update-core.php' == $pagenow)
)
) :
ob_start(array(&$this, 'update_notice'));
add_action('admin_footer', create_function('', 'ob_end_flush();'));
endif;
}
function update_notice($text = '') {
$pattern = '#(<a href\="' . __('http://codex.wordpress.org/WordPress_Backups') . '">.*?</p>)#';
$replace = '$1' . "\n<p>" . sprintf(__('Click <a href="%s" target="_blank">here</a> to back up your database using the WordPress Database Backup plugin. <strong>Note:</strong> WordPress Database Backup does <em>not</em> back up your files, just your database.', 'wp-db-backup'), 'tools.php?page=wp-db-backup') . "</p>\n";
$text = preg_replace($pattern, $replace, $text);
return $text;
}
function build_backup_script() {
global $table_prefix, $wpdb;
echo "<div class='wrap'>";
echo '<fieldset class="options"><legend>' . __('Progress','wp-db-backup') . '</legend>
<p><strong>' .
__('DO NOT DO THE FOLLOWING AS IT WILL CAUSE YOUR BACKUP TO FAIL:','wp-db-backup').
'</strong></p>
<ol>
<li>'.__('Close this browser','wp-db-backup').'</li>
<li>'.__('Reload this page','wp-db-backup').'</li>
<li>'.__('Click the Stop or Back buttons in your browser','wp-db-backup').'</li>
</ol>
<p><strong>' . __('Progress:','wp-db-backup') . '</strong></p>
<div id="meterbox" style="height:11px;width:80%;padding:3px;border:1px solid #659fff;"><div id="meter" style="color:#fff;height:11px;line-height:11px;background-color:#659fff;width:0%;text-align:center;font-size:6pt;"> </div></div>
<div id="progress_message"></div>
<div id="errors"></div>
</fieldset>
<iframe id="backuploader" src="about:blank" style="visibility:hidden;border:none;height:1em;width:1px;"></iframe>
<script type="text/javascript">
//<![CDATA[
window.onbeforeunload = function() {
return "' . __('Navigating away from this page will cause your backup to fail.', 'wp-db-backup') . '";
}
function setMeter(pct) {
var meter = document.getElementById("meter");
meter.style.width = pct + "%";
meter.innerHTML = Math.floor(pct) + "%";
}
function setProgress(str) {
var progress = document.getElementById("progress_message");
progress.innerHTML = str;
}
function addError(str) {
var errors = document.getElementById("errors");
errors.innerHTML = errors.innerHTML + str + "<br />";
}
function backup(table, segment) {
var fram = document.getElementById("backuploader");
fram.src = "' . $this->page_url . '&fragment=" + table + ":" + segment + ":' . $this->backup_filename . ':&wp_db_temp_dir=' . $this->backup_dir . '";
}
var curStep = 0;
function nextStep() {
backupStep(curStep);
curStep++;
}
function finishBackup() {
var fram = document.getElementById("backuploader");
setMeter(100);
';
$download_uri = add_query_arg('backup', $this->backup_filename, $this->page_url);
switch($_POST['deliver']) {
case 'http':
echo '
setProgress("' . __('Preparing download.','wp-db-backup') . '");
window.onbeforeunload = null;
fram.src = "' . $download_uri . '";
setTimeout( function() {
var secondFrame = document.createElement("iframe");
fram.parentNode.insertBefore(secondFrame, fram);
secondFrame.src = "' . $download_uri . '&download-retry=1";
}, 30000 );
';
break;
case 'smtp':
$email = sanitize_text_field(wp_unslash($_POST['backup_recipient']));
if ( get_option('wpdb_backup_recip') != $email) {
update_option('wpdb_backup_recip', $email);
}
echo '
setProgress("' . sprintf(__('Your backup has been emailed to %s','wp-db-backup'), $email) . '");
window.onbeforeunload = null;
fram.src = "' . $download_uri . '&via=email&recipient=' . $email . '";
';
break;
default:
echo '
setProgress("' . __('Backup Complete!','wp-db-backup') . '");
window.onbeforeunload = null;
';
}
echo '
}
function backupStep(step) {
switch(step) {
case 0: backup("", 0); break;
';
$also_backup = $this->get_post_data_array('other_tables');
$core_tables = $this->get_post_data_array('core_tables');
$tables = array_merge($core_tables, $also_backup);
$step_count = 1;
foreach ($tables as $table) {
$rec_count = $wpdb->get_var("SELECT count(*) FROM {$table}");
$rec_segments = ceil($rec_count / ROWS_PER_SEGMENT);
$table_count = 0;
if ( $this->module_check() ) {
$delay = "setTimeout('";
$delay_time = "', " . (int) MOD_EVASIVE_DELAY . ")";
}
else { $delay = $delay_time = ''; }
do {
echo "case {$step_count}: {$delay}backup(\"{$table}\", {$table_count}){$delay_time}; break;\n";
$step_count++;
$table_count++;
} while($table_count < $rec_segments);
echo "case {$step_count}: {$delay}backup(\"{$table}\", -1){$delay_time}; break;\n";
$step_count++;
}
echo "case {$step_count}: finishBackup(); break;";
echo '
}
if(step != 0) setMeter(100 * step / ' . $step_count . ');
}
nextStep();
// ]]>
</script>
</div>
';
$this->backup_menu();
}
function backup_fragment($table, $segment, $filename) {
global $table_prefix, $wpdb;
echo "$table:$segment:$filename";
if($table == '') {
$msg = __('Creating backup file...','wp-db-backup');
} else {
if($segment == -1) {
$msg = sprintf(__('Finished backing up table \\"%s\\".','wp-db-backup'), $table);
} else {
$msg = sprintf(__('Backing up table \\"%s\\"...','wp-db-backup'), $table);
}
}
if (is_writable($this->backup_dir)) {
$this->fp = $this->open($this->backup_dir . $filename, 'a');
if(!$this->fp) {
$this->error(__('Could not open the backup file for writing!','wp-db-backup'));
$this->error(array('loc' => 'frame', 'kind' => 'fatal', 'msg' => __('The backup file could not be saved. Please check the permissions for writing to your backup directory and try again.','wp-db-backup')));
}
else {
if($table == '') {
//Begin new backup of MySql
$this->stow("# " . __('WordPress MySQL database backup','wp-db-backup') . "\n");
$this->stow("#\n");
$this->stow("# " . sprintf(__('Generated: %s','wp-db-backup'),date("l j. F Y H:i T")) . "\n");
$this->stow("# " . sprintf(__('Hostname: %s','wp-db-backup'),DB_HOST) . "\n");
$this->stow("# " . sprintf(__('Database: %s','wp-db-backup'),$this->backquote(DB_NAME)) . "\n");
$this->stow("# --------------------------------------------------------\n");
} else {
if($segment == 0) {
// 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");
$this->stow("# " . sprintf(__('Table: %s','wp-db-backup'),$this->backquote($table)) . "\n");
$this->stow("# --------------------------------------------------------\n");
}
$this->backup_table($table, $segment);
}
}
} else {
$this->error(array('kind' => 'fatal', 'loc' => 'frame', 'msg' => __('The backup directory is not writeable! Please check the permissions for writing to your backup directory and try again.','wp-db-backup')));
}
if($this->fp) $this->close($this->fp);
$this->error_display('frame');
echo '<script type="text/javascript"><!--//
var msg = "' . $msg . '";
window.parent.setProgress(msg);
window.parent.nextStep();
//--></script>
';
die();
}
function perform_backup() {
// are we backing up any other tables?
$also_backup = array();
if (isset($_POST['other_tables']))
$also_backup = sanitize_text_field($_POST['other_tables']);
$core_tables = sanitize_text_field($_POST['core_tables']);
$this->backup_file = $this->db_backup($core_tables, $also_backup);
if (false !== $this->backup_file) {
if ('smtp' == $_POST['deliver']) {
$email = sanitize_text_field(wp_unslash($_POST['backup_recipient']));
$this->deliver_backup($this->backup_file, sanitize_text_field($_POST['deliver']), $email, 'main');
if ( get_option('wpdb_backup_recip') != $email ) {
update_option('wpdb_backup_recip', $email );
}
wp_redirect($this->page_url);
} elseif ('http' == $_POST['deliver']) {
$download_uri = add_query_arg('backup',$this->backup_file,$this->page_url);
wp_redirect($download_uri);
exit;
}
// we do this to say we're done.
$this->backup_complete = true;
}
}
function admin_header() {
?>
<script type="text/javascript">
//<![CDATA[
if ( 'undefined' != typeof addLoadEvent ) {
addLoadEvent(function() {
var t = {'extra-tables-list':{name: 'other_tables[]'}, 'include-tables-list':{name: 'wp_cron_backup_tables[]'}};
for ( var k in t ) {
t[k].s = null;
var d = document.getElementById(k);
if ( ! d )
continue;
var ul = d.getElementsByTagName('ul').item(0);
if ( ul ) {
var lis = ul.getElementsByTagName('li');
if ( 2 < lis.length ) {
var text = document.createElement('p');
text.className = 'instructions';
text.innerHTML = '<?php _e('Click and hold down <code>[SHIFT]</code> to toggle multiple checkboxes', 'wp-db-backup'); ?>';
ul.parentNode.insertBefore(text, ul);
}
}
t[k].p = d.getElementsByTagName("input");
for(var i=0; i < t[k].p.length; i++) {
if(t[k].name == t[k].p[i].getAttribute('name')) {
t[k].p[i].id = k + '-table-' + i;
t[k].p[i].onkeyup = t[k].p[i].onclick = function(e) {
e = e ? e : event;
if ( 16 == e.keyCode )
return;
var match = /([\w-]*)-table-(\d*)/.exec(this.id);
var listname = match[1];
var that = match[2];
if ( null === t[listname].s )
t[listname].s = that;
else if ( e.shiftKey ) {
var start = Math.min(that, t[listname].s) + 1;
var end = Math.max(that, t[listname].s);
for( var j=start; j < end; j++)
t[listname].p[j].checked = t[listname].p[j].checked ? false : true;
t[listname].s = null;
}
}
}
}
}
<?php if ( function_exists('wp_schedule_event') ) : // needs to be at least WP 2.1 for ajax ?>
if ( 'undefined' == typeof XMLHttpRequest )
var xml = new ActiveXObject( navigator.userAgent.indexOf('MSIE 5') >= 0 ? 'Microsoft.XMLHTTP' : 'Msxml2.XMLHTTP' );
else
var xml = new XMLHttpRequest();
var initTimeChange = function() {
var timeWrap = document.getElementById('backup-time-wrap');
var backupTime = document.getElementById('next-backup-time');
if ( !! timeWrap && !! backupTime && ( 1 == <?php
echo (int) ( 'en' == strtolower( substr( get_locale(), 0, 2 ) ) );
?> ) ) {
var span = document.createElement('span');
span.className = 'submit';
span.id = 'change-wrap';
span.innerHTML = '<input type="submit" id="change-backup-time" name="change-backup-time" value="<?php _e('Change','wp-db-backup'); ?>" />';
timeWrap.appendChild(span);
backupTime.ondblclick = function(e) { span.parentNode.removeChild(span); clickTime(e, backupTime); };
span.onclick = function(e) { span.parentNode.removeChild(span); clickTime(e, backupTime); };
}
}
var clickTime = function(e, backupTime) {
var tText = backupTime.innerHTML;
backupTime.innerHTML = '<input type="text" value="' + tText + '" name="backup-time-text" id="backup-time-text" /> <span class="submit"><input type="submit" name="save-backup-time" id="save-backup-time" value="<?php _e('Save', 'wp-db-backup'); ?>" /></span>';
backupTime.ondblclick = null;
var mainText = document.getElementById('backup-time-text');
mainText.focus();
var saveTButton = document.getElementById('save-backup-time');
if ( !! saveTButton )
saveTButton.onclick = function(e) { saveTime(backupTime, mainText); return false; };
if ( !! mainText )
mainText.onkeydown = function(e) {
e = e || window.event;
if ( 13 == e.keyCode ) {
saveTime(backupTime, mainText);
return false;
}
}
}
var saveTime = function(backupTime, mainText) {
var tVal = mainText.value;
xml.open('POST', 'admin-ajax.php', true);
xml.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
if ( xml.overrideMimeType )
xml.setRequestHeader('Connection', 'close');
xml.send('action=save_backup_time&_wpnonce=<?php echo wp_create_nonce($this->referer_check_key); ?>&backup-time='+tVal);
xml.onreadystatechange = function() {
if ( 4 == xml.readyState && '0' != xml.responseText ) {
backupTime.innerHTML = xml.responseText;
initTimeChange();
}
}
}
initTimeChange();
<?php endif; // wp_schedule_event exists ?>
});
}
//]]>
</script>
<style type="text/css">
.wp-db-backup-updated {
margin-top: 1em;
}
fieldset.options {
border: 1px solid;
margin-top: 1em;
padding: 1em;
-moz-border-radius: 8px;
-khtml-border-radius: 8px;
-webkit-border-top-left-radius: 8px;
-webkit-border-top-right-radius: 8px;
-webkit-border-bottom-left-radius: 8px;
-webkit-border-bottom-right-radius: 8px;
border-radius: 8px;
}
fieldset.options div.tables-list {
float: left;
padding: 1em;
}
fieldset.options input {
}
fieldset.options legend {
font-size: larger;
font-weight: bold;
margin-bottom: .5em;
padding: 1em;
}
fieldset.options .instructions {
font-size: smaller;
}
fieldset.options ul {
list-style-type: none;
}
fieldset.options li {
text-align: left;
}
fieldset.options .submit {
border-top: none;
}
</style>
<?php
}
function admin_load() {
add_action('admin_head', array(&$this, 'admin_header'));
}
function admin_menu() {
$_page_hook = add_management_page(__('Backup','wp-db-backup'), __('Backup','wp-db-backup'), 'import', $this->basename, array(&$this, 'backup_menu'));
add_action('load-' . $_page_hook, array(&$this, 'admin_load'));
if (function_exists('get_current_screen')) {
$screen = convert_to_screen($_page_hook);
if (method_exists($screen,'add_help_tab')) {
$screen->add_help_tab(array(
'title' => __('Backup','wp-db-backup'),
'id' => $_page_hook,
'content' => $this->help_menu(),
));
}
} elseif ( function_exists('add_contextual_help') ) {
$text = $this->help_menu();
add_contextual_help($_page_hook, $text);
}
}
function fragment_menu() {
$page_hook = add_management_page(__('Backup','wp-db-backup'), __('Backup','wp-db-backup'), 'import', $this->basename, array(&$this, 'build_backup_script'));
add_action('load-' . $page_hook, array(&$this, 'admin_load'));
}
/**
* Add WP-DB-Backup-specific help options to the 2.7 =< WP contextual help menu
* @return string The text of the help menu.
*/
function help_menu() {
$text = "\n<a href=\"http://wordpress.org/extend/plugins/wp-db-backup/faq/\" target=\"_blank\">" . __('FAQ', 'wp-db-backup') . '</a>';
return $text;
}
function save_backup_time() {
if ( $this->can_user_backup() ) {
// try to get a time from the input string
$time = strtotime(strval($_POST['backup-time']));
if ( ! empty( $time ) && time() < $time ) {
wp_clear_scheduled_hook( 'wp_db_backup_cron' ); // unschedule previous
$scheds = (array) wp_get_schedules();
$name = get_option('wp_cron_backup_schedule');
if ( 0 != $time ) {
wp_schedule_event($time, $name, 'wp_db_backup_cron');
echo gmdate(get_option('date_format') . ' ' . get_option('time_format'), $time + (get_option('gmt_offset') * 3600));
exit;
}
}
} else {
die(0);
}
}
/**
* Better addslashes for SQL queries.
* Taken from phpMyAdmin.
*/
function sql_addslashes($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;
$fp = @fopen($filename, $mode);
return $fp;
}
function close($fp) {
fclose($fp);
}
/**
* Write to the backup file
* @param string $query_line the line to write
* @return null
*/
function stow($query_line) {
if(false === @fwrite($this->fp, $query_line))
$this->error(__('There was an error writing a line to the backup script:','wp-db-backup') . ' ' . $query_line . ' ' . $php_errormsg);
}
/**
* Logs any error messages
* @param array $args
* @return bool
*/
function error($args = array()) {
if ( is_string( $args ) )
$args = array('msg' => $args);
$args = array_merge( array('loc' => 'main', 'kind' => 'warn', 'msg' => ''), $args);
$this->errors[$args['kind']][] = $args['msg'];
if ( 'fatal' == $args['kind'] || 'frame' == $args['loc'])
$this->error_display($args['loc']);
return true;
}
/**
* Displays error messages
* @param array $errs
* @param string $loc
* @return string
*/
function error_display($loc = 'main', $echo = true) {
$errs = $this->errors;
unset( $this->errors );
if ( ! count($errs) ) return;
$msg = '';
$errs['fatal'] = isset( $errs['fatal'] ) ? (array) $errs['fatal'] : array();
$errs['warn'] = isset( $errs['warn'] ) ? (array) $errs['warn'] : array();
$err_list = array_slice( array_merge( $errs['fatal'], $errs['warn'] ), 0, 10);
if ( 10 == count( $err_list ) )
$err_list[9] = __('Subsequent errors have been omitted from this log.','wp-db-backup');
$wrap = ( 'frame' == $loc ) ? "<script type=\"text/javascript\">\n var msgList = ''; \n %1\$s \n if ( msgList ) alert(msgList); \n </script>" : '%1$s';
$line = ( 'frame' == $loc ) ?
"try{ window.parent.addError('%1\$s'); } catch(e) { msgList += ' %1\$s';}\n" :
"%1\$s<br />\n";
foreach( (array) $err_list as $err )
$msg .= sprintf($line,str_replace(array("\n","\r"), '', addslashes($err)));
$msg = sprintf($wrap,$msg);
if ( count($errs['fatal'] ) ) {
if ( function_exists('wp_die') && 'frame' != $loc ) wp_die(stripslashes($msg));
else die($msg);
}
else {
if ( $echo ) echo $msg;
else return $msg;
}
}
/**
* Taken partially from phpMyAdmin and partially from
* Alain Wolf, Zurich - Switzerland
* Website: http://restkultur.ch/personal/wolf/scripts/db_backup/
* Modified by Scott Merrill (http://www.skippy.net/)
* to use the WordPress $wpdb object
* @param string $table
* @param string $segment
* @return void
*/
function backup_table($table, $segment = 'none') {
global $wpdb;
$table_structure = $wpdb->get_results("DESCRIBE $table");
if (! $table_structure) {
$this->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");
$this->stow("# " . sprintf(__('Delete any existing table %s','wp-db-backup'),$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");
$this->stow("# " . sprintf(__('Table structure of table %s','wp-db-backup'),$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) {
$err_msg = sprintf(__('Error with SHOW CREATE TABLE for %s.','wp-db-backup'), $table);
$this->error($err_msg);
$this->stow("#\n# $err_msg\n#\n");
}
$this->stow($create_table[0][1] . ' ;');
if (false === $table_structure) {
$err_msg = sprintf(__('Error getting table structure of %s','wp-db-backup'), $table);
$this->error($err_msg);
$this->stow("#\n# $err_msg\n#\n");
}
// Comment in SQL-file
$this->stow("\n\n");
$this->stow("#\n");
$this->stow('# ' . sprintf(__('Data contents of table %s','wp-db-backup'),$this->backquote($table)) . "\n");
$this->stow("#\n");
}
if(($segment == 'none') || ($segment >= 0)) {
$defs = array();
$ints = array();
foreach ($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')) ) {
$defs[strtolower($struct->Field)] = ( null === $struct->Default ) ? 'NULL' : $struct->Default;
$ints[strtolower($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 {
// don't include extra stuff, if so requested
$excs = (array) get_option('wp_db_backup_excs');
$where = '';
if ( is_array($excs['spam'] ) && in_array($table, $excs['spam']) ) {
$where = ' WHERE comment_approved != "spam"';
} elseif ( is_array($excs['revisions'] ) && in_array($table, $excs['revisions']) ) {
$where = ' WHERE post_type != "revision"';
}
if ( !ini_get('safe_mode')) @set_time_limit(15*60);
$table_data = $wpdb->get_results("SELECT * FROM $table $where LIMIT {$row_start}, {$row_inc}", ARRAY_A);
$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 => $value) {
if ( !empty($ints[strtolower($key)]) ) {
// make sure there are no blank spots in the insert syntax,
// yet try to avoid quotation marks around integers
$value = ( null === $value || '' === $value) ? $defs[strtolower($key)] : $value;
$values[] = ( '' === $value ) ? "''" : $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");
$this->stow("# " . sprintf(__('End of data contents of table %s','wp-db-backup'),$this->backquote($table)) . "\n");
$this->stow("# --------------------------------------------------------\n");
$this->stow("\n");
}
} // end backup_table()
function db_backup($core_tables, $other_tables) {
global $table_prefix, $wpdb;
if (is_writable($this->backup_dir)) {
$this->fp = $this->open($this->backup_dir . $this->backup_filename);
if(!$this->fp) {
$this->error(__('Could not open the backup file for writing!','wp-db-backup'));
return false;
}
} else {
$this->error(__('The backup directory is not writeable!','wp-db-backup'));
return false;
}
//Begin new backup of MySql
$this->stow("# " . __('WordPress MySQL database backup','wp-db-backup') . "\n");
$this->stow("#\n");
$this->stow("# " . sprintf(__('Generated: %s','wp-db-backup'),date("l j. F Y H:i T")) . "\n");
$this->stow("# " . sprintf(__('Hostname: %s','wp-db-backup'),DB_HOST) . "\n");
$this->stow("# " . sprintf(__('Database: %s','wp-db-backup'),$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");
$this->stow("# " . sprintf(__('Table: %s','wp-db-backup'),$this->backquote($table)) . "\n");
$this->stow("# --------------------------------------------------------\n");
$this->backup_table($table);
}
$this->close($this->fp);
if (count($this->errors)) {
return false;
} else {
return $this->backup_filename;
}
} //wp_db_backup
/**
* Sends the backed-up file via email
* @param string $to
* @param string $subject
* @param string $message
* @return bool
*/
function send_mail( $to, $subject, $message, $diskfile) {
global $phpmailer;
$filename = basename($diskfile);
extract( apply_filters( 'wp_mail', compact( 'to', 'subject', 'message' ) ) );
if ( !is_object( $phpmailer ) || ( strtolower(get_class( $phpmailer )) != 'phpmailer' ) ) {
if ( file_exists( ABSPATH . WPINC . '/class-phpmailer.php' ) )
require_once ABSPATH . WPINC . '/class-phpmailer.php';
if ( file_exists( ABSPATH . WPINC . '/class-smtp.php' ) )
require_once ABSPATH . WPINC . '/class-smtp.php';
if ( class_exists( 'PHPMailer') )
$phpmailer = new PHPMailer();
}
// try to use phpmailer directly (WP 2.2+)
if ( is_object( $phpmailer ) && ( strtolower(get_class( $phpmailer )) == 'phpmailer' ) ) {
// Get the site domain and get rid of www.
$sitename = $this->get_sitename();
$from_email = 'wordpress@' . $sitename;
$from_name = 'WordPress';
// Empty out the values that may be set
$phpmailer->ClearAddresses();
$phpmailer->ClearAllRecipients();
$phpmailer->ClearAttachments();
$phpmailer->ClearBCCs();
$phpmailer->ClearCCs();
$phpmailer->ClearCustomHeaders();
$phpmailer->ClearReplyTos();
$phpmailer->AddAddress( $to );
$phpmailer->AddAttachment($diskfile, $filename);
$phpmailer->Body = $message;
$phpmailer->CharSet = apply_filters( 'wp_mail_charset', get_bloginfo('charset') );
$phpmailer->From = apply_filters( 'wp_mail_from', $from_email );
$phpmailer->FromName = apply_filters( 'wp_mail_from_name', $from_name );
$phpmailer->IsMail();
$phpmailer->Subject = $subject;
do_action_ref_array( 'phpmailer_init', array( &$phpmailer ) );
$result = @$phpmailer->Send();
// old-style: build the headers directly
} else {
$randomish = md5(time());
$boundary = "==WPBACKUP-$randomish";
$fp = fopen($diskfile,"rb");
$file = fread($fp,filesize($diskfile));
$this->close($fp);
$data = chunk_split(base64_encode($file));