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wp-db-backup.php
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<?php
/*
Plugin Name: Database Backup for WordPress
Plugin URI: https://github.com/deliciousbrains/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: Delicious Brains
Author URI: https://deliciousbrains.com
Version: 2.5.2
Domain Path: /languages
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.' );
}
if ( ! defined( 'DBBWP_ROWS_PER_SEGMENT' ) ) {
define( 'DBBWP_ROWS_PER_SEGMENT', 100 );
}
/**
* Set DBBWP_MOD_EVASIVE_OVERRIDE to true
* and increase DBBWP_MOD_EVASIVE_DELAY
* if the backup stops prematurely.
*/
// define('DBBWP_MOD_EVASIVE_OVERRIDE', false);
if ( ! defined( 'DBBWP_MOD_EVASIVE_DELAY' ) ) {
define( 'DBBWP_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 = '2.5.2';
function module_check() {
$mod_evasive = false;
if ( defined( 'DBBWP_MOD_EVASIVE_OVERRIDE' ) && true === DBBWP_MOD_EVASIVE_OVERRIDE ) {
return true;
}
if ( ! defined( 'DBBWP_MOD_EVASIVE_OVERRIDE' ) || false === DBBWP_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_notices', array( &$this, 'update_notice' ) );
add_action( 'wp_db_backup_cron', array( &$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',
'termmeta',
'users',
'usermeta',
);
foreach ( $possible_names as $name ) {
if ( isset( $wpdb->{$name} ) ) {
$this->core_table_names[] = $wpdb->{$name};
}
}
$tmp_dir = get_temp_dir();
if ( isset( $_GET['wp_db_temp_dir'] ) ) {
$requested_dir = sanitize_text_field( $_GET['wp_db_temp_dir'] );
if ( is_writeable( $requested_dir ) ) {
$tmp_dir = $requested_dir;
}
}
$this->backup_dir = trailingslashit( apply_filters( 'wp_db_b_backup_dir', $tmp_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, 'admin_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'] ) );
if ( empty( $table ) || in_array( $table, $this->get_tables() ) ) {
$this->validate_file( $filename );
$this->backup_fragment( $table, $segment, $filename );
} else {
$this->error(
array(
'loc' => 'frame',
'kind' => 'fatal',
'msg' => __(
'There was an error determining the table to backup. Please check the settings used for the backup and try again.',
'wp-db-backup'
),
)
);
}
}
die();
}
function init_textdomain() {
load_plugin_textdomain(
'wp-db-backup',
false,
dirname( plugin_basename( __FILE__ ) ) . '/languages'
);
}
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() {
global $pagenow;
if ( empty( $pagenow ) || 'update-core.php' !== $pagenow ) {
return false;
}
?>
<div class="notice notice-warning">
<p>
<?php
printf(
__( 'Click <a href="%s">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' ),
esc_url( get_admin_url( null, 'tools.php?page=wp-db-backup' ) )
);
?>
</p>
</div>
<?php
}
function build_backup_script() {
global $table_prefix, $wpdb;
echo '<fieldset class="options backup-running"><legend>' . __( 'Progress', 'wp-db-backup' ) . '</legend>
<div class="panel-heading">
<h3>Backup In Progress...</h3>
</div>
<div class="panel-content">
<div class="progress-bar">
<div id="progress-status"></div>
<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>
<div class="info-notice">
<img src="<?php echo plugin_dir_url( __FILE__ ) . 'assets/warning.svg'; ?>">
<p>
Whilst the backup is in progress, please do not close the browser, reload or change the page, or click the stop or back browser buttons. This would result in the backup failing.
</p>
</div>
<?php echo '<div id="errors"></div>
<iframe id="backuploader" src="about:blank" style="display:none;border:none;height:1em;width:1px;"></iframe>
</fieldset>
<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 meterStatus = document.getElementById("progress-status");
var meter = document.getElementById("meter");
meter.style.width = pct + "%";
meterStatus.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");
secondFrame.style.display = "none";
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 / DBBWP_ROWS_PER_SEGMENT );
$table_count = 0;
if ( $this->module_check() ) {
$delay = "setTimeout('";
$delay_time = "', " . (int) DBBWP_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>
';
}
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.querySelector('.instructions-container p');
text.style.display = 'block';
}
}
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;
var label = document.getElementById(t[k].p[i].id).parentNode;
t[k].p[i].onkeyup = label.onclick = function(e) {
e = e ? e : event;
if ( 16 == e.keyCode )
return;
var match = /([\w-]*)-table-(\d*)/.exec(this.querySelector('input').id);
var listname = match[1];
var that = match[2];
if ( null === t[listname].s )
t[listname].s = that;
else if ( e.shiftKey ) {
console.log(this);
var start = Math.min(that, t[listname].s) + 1;
var end = Math.max(that, t[listname].s);
this.querySelector('input').checked = true;
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( $this->referer_check_key ); ?>&backup-time='+tVal);
xml.onreadystatechange = function() {
if ( 4 == xml.readyState && '0' != xml.responseText ) {
backupTime.innerHTML = xml.responseText;
initTimeChange();
}
}
}
initTimeChange();
<?php endif; // wp_schedule_event exists ?>
});
}
//]]>
</script>
<?php
}
function admin_load() {
add_action( 'admin_head', array( &$this, 'admin_header' ) );
wp_enqueue_style( 'wp-db-backup-styles', plugin_dir_url( __FILE__ ) . 'assets/css/style.css', array( 'common', 'forms' ) );
wp_enqueue_script( 'wp-db-backup-script', plugin_dir_url( __FILE__ ) . 'assets/js/script.js', array( 'jquery' ), $this->version, true );
}
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 );
}
}
/**
* 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 = DBBWP_ROWS_PER_SEGMENT;
} else {
$row_start = $segment * DBBWP_ROWS_PER_SEGMENT;
$row_inc = DBBWP_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;