/**
* Dumps the database.
*
* What it does:
* - It writes all of the database to standard output.
* - It uses gzip compression if compress is set in the URL/post data.
* - It may possibly time out, and mess up badly if you were relying on it. :P
* - The data dumped depends on whether "struct" and "data" are passed.
* - It is called from ManageMaintenance.controller.php.
*/
function DumpDatabase2()
{
global $db_name, $scripturl, $modSettings, $db_prefix, $db_show_debug;
// We'll need a db to dump :P
$database = database();
// We don't need debug when dumping the database
$modSettings['disableQueryCheck'] = true;
$db_show_debug = false;
// You can't dump nothing!
if (!isset($_REQUEST['struct']) && !isset($_REQUEST['data'])) {
$_REQUEST['data'] = true;
}
// Attempt to stop from dying...
@set_time_limit(600);
$time_limit = ini_get('max_execution_time');
$start_time = time();
// @todo ... fail on not getting the requested memory?
setMemoryLimit('256M');
$memory_limit = memoryReturnBytes(ini_get('memory_limit')) / 4;
$current_used_memory = 0;
$db_backup = '';
$output_function = 'un_compressed';
@ob_end_clean();
// Start saving the output... (don't do it otherwise for memory reasons.)
if (isset($_REQUEST['compress']) && function_exists('gzencode')) {
$output_function = 'gzencode';
// Send faked headers so it will just save the compressed output as a gzip.
header('Content-Type: application/x-gzip');
header('Accept-Ranges: bytes');
header('Content-Encoding: none');
// Gecko browsers... don't like this. (Mozilla, Firefox, etc.)
if (!isBrowser('gecko')) {
header('Content-Transfer-Encoding: binary');
}
// The file extension will include .gz...
$extension = '.sql.gz';
} else {
// Get rid of the gzipping alreading being done.
if (!empty($modSettings['enableCompressedOutput'])) {
@ob_end_clean();
} elseif (ob_get_length() != 0) {
ob_clean();
}
// Tell the client to save this file, even though it's text.
header('Content-Type: ' . (isBrowser('ie') || isBrowser('opera') ? 'application/octetstream' : 'application/octet-stream'));
header('Content-Encoding: none');
// This time the extension should just be .sql.
$extension = '.sql';
}
// This should turn off the session URL parser.
$scripturl = '';
// Send the proper headers to let them download this file.
header('Content-Disposition: attachment; filename="' . $db_name . '-' . (empty($_REQUEST['struct']) ? 'data' : (empty($_REQUEST['data']) ? 'structure' : 'complete')) . '_' . strftime('%Y-%m-%d') . $extension . '"');
header('Cache-Control: private');
header('Connection: close');
// This makes things simpler when using it so very very often.
$crlf = "\r\n";
// SQL Dump Header.
$db_chunks = '-- ==========================================================' . $crlf . '--' . $crlf . '-- Database dump of tables in `' . $db_name . '`' . $crlf . '-- ' . standardTime(time(), false) . $crlf . '--' . $crlf . '-- ==========================================================' . $crlf . $crlf;
// Get all tables in the database....for our installation
$real_prefix = preg_match('~^(`?)(.+?)\\1\\.(.*?)$~', $db_prefix, $match) === 1 ? $match[3] : $db_prefix;
$tables = $database->db_list_tables(false, $real_prefix . '%');
// Dump each table.
foreach ($tables as $tableName) {
// Are we dumping the structures?
if (isset($_REQUEST['struct'])) {
$db_chunks .= $crlf . '--' . $crlf . '-- Table structure for table `' . $tableName . '`' . $crlf . '--' . $crlf . $crlf . $database->db_table_sql($tableName) . ';' . $crlf;
} else {
// This is needed to speedup things later
$database->db_table_sql($tableName);
}
// How about the data?
if (!isset($_REQUEST['data']) || substr($tableName, -10) == 'log_errors') {
continue;
}
$first_round = true;
$close_table = false;
// Are there any rows in this table?
while ($get_rows = $database->insert_sql($tableName, $first_round)) {
if (empty($get_rows)) {
break;
}
// Time is what we need here!
if (function_exists('apache_reset_timeout')) {
@apache_reset_timeout();
} elseif (!empty($time_limit) && $start_time + $time_limit - 20 > time()) {
$start_time = time();
@set_time_limit(150);
}
// for the first pass, start the output with a custom line...
if ($first_round) {
$db_chunks .= $crlf . '--' . $crlf . '-- Dumping data in `' . $tableName . '`' . $crlf . '--' . $crlf . $crlf;
$first_round = false;
}
$db_chunks .= $get_rows;
$current_used_memory += Util::strlen($db_chunks);
$db_backup .= $db_chunks;
unset($db_chunks);
$db_chunks = '';
if ($current_used_memory > $memory_limit) {
echo $output_function($db_backup);
$current_used_memory = 0;
// This is probably redundant
unset($db_backup);
$db_backup = '';
}
$close_table = true;
}
// No rows to get - skip it.
if ($close_table) {
$db_backup .= '-- --------------------------------------------------------' . $crlf;
}
}
// write the last line
$db_backup .= $crlf . '-- Done' . $crlf;
echo $output_function($db_backup);
exit;
}
/**
* Retrieve and return the administration settings for attachments.
*/
private function _settings()
{
global $modSettings, $txt, $scripturl, $context;
require_once SUBSDIR . '/Attachments.subs.php';
// Get the current attachment directory.
$modSettings['attachmentUploadDir'] = unserialize($modSettings['attachmentUploadDir']);
$context['attachmentUploadDir'] = $modSettings['attachmentUploadDir'][$modSettings['currentAttachmentUploadDir']];
// First time here?
if (empty($modSettings['attachment_basedirectories']) && $modSettings['currentAttachmentUploadDir'] == 1 && count($modSettings['attachmentUploadDir']) == 1) {
$modSettings['attachmentUploadDir'] = $modSettings['attachmentUploadDir'][1];
}
// If not set, show a default path for the base directory
if (!isset($_GET['save']) && empty($modSettings['basedirectory_for_attachments'])) {
$modSettings['basedirectory_for_attachments'] = $context['attachmentUploadDir'];
}
$context['valid_upload_dir'] = is_dir($context['attachmentUploadDir']) && is_writable($context['attachmentUploadDir']);
if (!empty($modSettings['automanage_attachments'])) {
$context['valid_basedirectory'] = !empty($modSettings['basedirectory_for_attachments']) && is_writable($modSettings['basedirectory_for_attachments']);
} else {
$context['valid_basedirectory'] = true;
}
// A bit of razzle dazzle with the $txt strings. :)
$txt['basedirectory_for_attachments_warning'] = str_replace('{attach_repair_url}', $scripturl . '?action=admin;area=manageattachments;sa=attachpaths', $txt['basedirectory_for_attachments_warning']);
$txt['attach_current_dir_warning'] = str_replace('{attach_repair_url}', $scripturl . '?action=admin;area=manageattachments;sa=attachpaths', $txt['attach_current_dir_warning']);
$txt['attachment_path'] = $context['attachmentUploadDir'];
$txt['basedirectory_for_attachments_path'] = isset($modSettings['basedirectory_for_attachments']) ? $modSettings['basedirectory_for_attachments'] : '';
$txt['use_subdirectories_for_attachments_note'] = empty($modSettings['attachment_basedirectories']) || empty($modSettings['use_subdirectories_for_attachments']) ? $txt['use_subdirectories_for_attachments_note'] : '';
$txt['attachmentUploadDir_multiple_configure'] = '<a href="' . $scripturl . '?action=admin;area=manageattachments;sa=attachpaths">[' . $txt['attachmentUploadDir_multiple_configure'] . ']</a>';
$txt['attach_current_dir'] = empty($modSettings['automanage_attachments']) ? $txt['attach_current_dir'] : $txt['attach_last_dir'];
$txt['attach_current_dir_warning'] = $txt['attach_current_dir'] . $txt['attach_current_dir_warning'];
$txt['basedirectory_for_attachments_warning'] = $txt['basedirectory_for_attachments_current'] . $txt['basedirectory_for_attachments_warning'];
// Perform a test to see if the GD module or ImageMagick are installed.
$testImg = get_extension_funcs('gd') || class_exists('Imagick');
// See if we can find if the server is set up to support the attacment limits
$post_max_size = ini_get('post_max_size');
$upload_max_filesize = ini_get('upload_max_filesize');
$testPM = !empty($post_max_size) ? memoryReturnBytes($post_max_size) >= (isset($modSettings['attachmentPostLimit']) ? $modSettings['attachmentPostLimit'] * 1024 : 0) : true;
$testUM = !empty($upload_max_filesize) ? memoryReturnBytes($upload_max_filesize) >= (isset($modSettings['attachmentSizeLimit']) ? $modSettings['attachmentSizeLimit'] * 1024 : 0) : true;
$config_vars = array(array('title', 'attachment_manager_settings'), array('select', 'attachmentEnable', array($txt['attachmentEnable_deactivate'], $txt['attachmentEnable_enable_all'], $txt['attachmentEnable_disable_new'])), '', array('check', 'attachmentRecodeLineEndings'), '', array('select', 'automanage_attachments', array(0 => $txt['attachments_normal'], 1 => $txt['attachments_auto_space'], 2 => $txt['attachments_auto_years'], 3 => $txt['attachments_auto_months'], 4 => $txt['attachments_auto_16'])), array('check', 'use_subdirectories_for_attachments', 'subtext' => $txt['use_subdirectories_for_attachments_note']), empty($modSettings['attachment_basedirectories']) ? array('text', 'basedirectory_for_attachments', 40) : array('var_message', 'basedirectory_for_attachments', 'message' => 'basedirectory_for_attachments_path', 'invalid' => empty($context['valid_basedirectory']), 'text_label' => !empty($context['valid_basedirectory']) ? $txt['basedirectory_for_attachments_current'] : $txt['basedirectory_for_attachments_warning']), empty($modSettings['attachment_basedirectories']) && $modSettings['currentAttachmentUploadDir'] == 1 && count($modSettings['attachmentUploadDir']) == 1 ? array('text', 'attachmentUploadDir', 'subtext' => $txt['attachmentUploadDir_multiple_configure'], 40, 'invalid' => !$context['valid_upload_dir']) : array('var_message', 'attach_current_directory', 'subtext' => $txt['attachmentUploadDir_multiple_configure'], 'message' => 'attachment_path', 'invalid' => empty($context['valid_upload_dir']), 'text_label' => !empty($context['valid_upload_dir']) ? $txt['attach_current_dir'] : $txt['attach_current_dir_warning']), array('int', 'attachmentDirFileLimit', 'subtext' => $txt['zero_for_no_limit'], 6), array('int', 'attachmentDirSizeLimit', 'subtext' => $txt['zero_for_no_limit'], 6, 'postinput' => $txt['kilobyte']), '', array('warning', empty($testPM) ? 'attachment_postsize_warning' : ''), array('int', 'attachmentPostLimit', 'subtext' => $txt['zero_for_no_limit'], 6, 'postinput' => $txt['kilobyte']), array('warning', empty($testUM) ? 'attachment_filesize_warning' : ''), array('int', 'attachmentSizeLimit', 'subtext' => $txt['zero_for_no_limit'], 6, 'postinput' => $txt['kilobyte']), array('int', 'attachmentNumPerPostLimit', 'subtext' => $txt['zero_for_no_limit'], 6), array('title', 'attachment_security_settings'), array('check', 'attachmentCheckExtensions'), array('text', 'attachmentExtensions', 40), '', array('warning', empty($testImg) ? 'attachment_img_enc_warning' : ''), array('check', 'attachment_image_reencode'), '', array('warning', 'attachment_image_paranoid_warning'), array('check', 'attachment_image_paranoid'), array('title', 'attachment_thumbnail_settings'), array('check', 'attachmentShowImages'), array('check', 'attachmentThumbnails'), array('check', 'attachment_thumb_png'), array('check', 'attachment_thumb_memory', 'subtext' => $txt['attachment_thumb_memory_note1'], 'postinput' => $txt['attachment_thumb_memory_note2']), array('warning', 'attachment_thumb_memory_note'), array('text', 'attachmentThumbWidth', 6), array('text', 'attachmentThumbHeight', 6), '', array('int', 'max_image_width', 'subtext' => $txt['zero_for_no_limit']), array('int', 'max_image_height', 'subtext' => $txt['zero_for_no_limit']));
// Add new settings with a nice hook, makes them available for admin settings search as well
call_integration_hook('integrate_modify_attachment_settings', array(&$config_vars));
return $config_vars;
}
/**
* Allows to show/change attachment settings.
* This is the default sub-action of the 'Attachments and Avatars' center.
* Called by index.php?action=admin;area=manageattachments;sa=attachments.
*
* @param bool $return_config = false
* @uses 'attachments' sub template.
*/
function ManageAttachmentSettings($return_config = false)
{
global $txt, $modSettings, $scripturl, $context, $options, $sourcedir, $boarddir;
require_once $sourcedir . '/Attachments.php';
// Get the current attachment directory.
$modSettings['attachmentUploadDir'] = unserialize($modSettings['attachmentUploadDir']);
$context['attachmentUploadDir'] = $modSettings['attachmentUploadDir'][$modSettings['currentAttachmentUploadDir']];
// If not set, show a default path for the base directory
if (!isset($_GET['save']) && empty($modSettings['basedirectory_for_attachments'])) {
if (!empty($modSettings['currentAttachmentUploadDir'])) {
$modSettings['basedirectory_for_attachments'] = $modSettings['attachmentUploadDir'][1];
} else {
$modSettings['basedirectory_for_attachments'] = $context['attachmentUploadDir'];
}
}
$context['valid_upload_dir'] = is_dir($context['attachmentUploadDir']) && is_writable($context['attachmentUploadDir']);
if (!empty($modSettings['automanage_attachments'])) {
$context['valid_basedirectory'] = !empty($modSettings['basedirectory_for_attachments']) && is_writable($modSettings['basedirectory_for_attachments']);
} else {
$context['valid_basedirectory'] = true;
}
// A bit of razzle dazzle with the $txt strings. :)
$txt['attachment_path'] = $context['attachmentUploadDir'];
$txt['basedirectory_for_attachments_path'] = isset($modSettings['basedirectory_for_attachments']) ? $modSettings['basedirectory_for_attachments'] : '';
$txt['use_subdirectories_for_attachments_note'] = empty($modSettings['attachment_basedirectories']) || empty($modSettings['use_subdirectories_for_attachments']) ? $txt['use_subdirectories_for_attachments_note'] : '';
$txt['attachmentUploadDir_multiple_configure'] = '<a href="' . $scripturl . '?action=admin;area=manageattachments;sa=attachpaths">[' . $txt['attachmentUploadDir_multiple_configure'] . ']</a>';
$txt['attach_current_dir'] = empty($modSettings['automanage_attachments']) ? $txt['attach_current_dir'] : $txt['attach_last_dir'];
$txt['attach_current_dir_warning'] = $txt['attach_current_dir'] . $txt['attach_current_dir_warning'];
$txt['basedirectory_for_attachments_warning'] = $txt['basedirectory_for_attachments_current'] . $txt['basedirectory_for_attachments_warning'];
// Perform a test to see if the GD module or ImageMagick are installed.
$testImg = get_extension_funcs('gd') || class_exists('Imagick');
// See if we can find if the server is set up to support the attacment limits
$post_max_size = ini_get('post_max_size');
$upload_max_filesize = ini_get('upload_max_filesize');
$testPM = !empty($post_max_size) ? memoryReturnBytes($post_max_size) >= (isset($modSettings['attachmentPostLimit']) ? $modSettings['attachmentPostLimit'] * 1024 : 0) : true;
$testUM = !empty($upload_max_filesize) ? memoryReturnBytes($upload_max_filesize) >= (isset($modSettings['attachmentSizeLimit']) ? $modSettings['attachmentSizeLimit'] * 1024 : 0) : true;
$config_vars = array(array('title', 'attachment_manager_settings'), array('select', 'attachmentEnable', array($txt['attachmentEnable_deactivate'], $txt['attachmentEnable_enable_all'], $txt['attachmentEnable_disable_new'])), '', array('check', 'attachmentRecodeLineEndings'), '', array('select', 'automanage_attachments', array(0 => $txt['attachments_normal'], 1 => $txt['attachments_auto_space'], 2 => $txt['attachments_auto_years'], 3 => $txt['attachments_auto_months'], 4 => $txt['attachments_auto_16'])), array('check', 'use_subdirectories_for_attachments', 'subtext' => $txt['use_subdirectories_for_attachments_note']), empty($modSettings['attachment_basedirectories']) ? array('text', 'basedirectory_for_attachments', 40) : array('var_message', 'basedirectory_for_attachments', 'message' => 'basedirectory_for_attachments_path', 'invalid' => empty($context['valid_basedirectory']), 'text_label' => !empty($context['valid_basedirectory']) ? $txt['basedirectory_for_attachments_current'] : $txt['basedirectory_for_attachments_warning']), array('var_message', 'attach_current_directory', 'subtext' => $txt['attachmentUploadDir_multiple_configure'], 'message' => 'attachment_path', 'invalid' => empty($context['valid_upload_dir']), 'text_label' => !empty($context['valid_upload_dir']) ? $txt['attach_current_dir'] : $txt['attach_current_dir_warning']), array('int', 'attachmentDirFileLimit', 'subtext' => $txt['zero_for_no_limit'], 6), array('int', 'attachmentDirSizeLimit', 'subtext' => $txt['zero_for_no_limit'], 6, 'postinput' => $txt['kilobyte']), '', array('int', 'attachmentPostLimit', 'subtext' => $txt['zero_for_no_limit'], 6, 'postinput' => $txt['kilobyte']), array('warning', empty($testPM) ? 'attachment_postsize_warning' : ''), array('int', 'attachmentSizeLimit', 'subtext' => $txt['zero_for_no_limit'], 6, 'postinput' => $txt['kilobyte']), array('warning', empty($testUM) ? 'attachment_filesize_warning' : ''), array('int', 'attachmentNumPerPostLimit', 'subtext' => $txt['zero_for_no_limit'], 6), array('title', 'attachment_security_settings'), array('check', 'attachmentCheckExtensions'), array('text', 'attachmentExtensions', 40), '', array('warning', empty($testImg) ? 'attachment_img_enc_warning' : ''), array('check', 'attachment_image_reencode'), '', array('warning', 'attachment_image_paranoid_warning'), array('check', 'attachment_image_paranoid'), array('title', 'attachment_thumbnail_settings'), array('check', 'attachmentShowImages'), array('check', 'attachmentThumbnails'), array('check', 'attachment_thumb_png'), array('check', 'attachment_thumb_memory', 'subtext' => $txt['attachment_thumb_memory_note1'], 'postinput' => $txt['attachment_thumb_memory_note2']), array('warning', 'attachment_thumb_memory_note'), array('text', 'attachmentThumbWidth', 6), array('text', 'attachmentThumbHeight', 6), '', array('int', 'max_image_width', 'subtext' => $txt['zero_for_no_limit']), array('int', 'max_image_height', 'subtext' => $txt['zero_for_no_limit']));
$context['settings_post_javascript'] = '
var storing_type = document.getElementById(\'automanage_attachments\');
var base_dir = document.getElementById(\'use_subdirectories_for_attachments\');
createEventListener(storing_type)
storing_type.addEventListener("change", toggleSubDir, false);
createEventListener(base_dir)
base_dir.addEventListener("change", toggleSubDir, false);
toggleSubDir();';
call_integration_hook('integrate_modify_attachment_settings', array(&$config_vars));
if ($return_config) {
return $config_vars;
}
// These are very likely to come in handy! (i.e. without them we're doomed!)
require_once $sourcedir . '/ManagePermissions.php';
require_once $sourcedir . '/ManageServer.php';
// Saving settings?
if (isset($_GET['save'])) {
checkSession();
if (!empty($_POST['use_subdirectories_for_attachments'])) {
if (isset($_POST['use_subdirectories_for_attachments']) && empty($_POST['basedirectory_for_attachments'])) {
$_POST['basedirectory_for_attachments'] = !empty($modSettings['basedirectory_for_attachments']) ? $modSettings['basedirectory_for_attachments'] : $boarddir;
}
if (!empty($_POST['use_subdirectories_for_attachments']) && !empty($modSettings['attachment_basedirectories'])) {
if (!is_array($modSettings['attachment_basedirectories'])) {
$modSettings['attachment_basedirectories'] = unserialize($modSettings['attachment_basedirectories']);
}
} else {
$modSettings['attachment_basedirectories'] = array();
}
if (!empty($_POST['use_subdirectories_for_attachments']) && !empty($_POST['basedirectory_for_attachments']) && !in_array($_POST['basedirectory_for_attachments'], $modSettings['attachment_basedirectories'])) {
$currentAttachmentUploadDir = $modSettings['currentAttachmentUploadDir'];
if (!in_array($_POST['basedirectory_for_attachments'], $modSettings['attachmentUploadDir'])) {
if (!automanage_attachments_create_directory($_POST['basedirectory_for_attachments'])) {
$_POST['basedirectory_for_attachments'] = $modSettings['basedirectory_for_attachments'];
}
}
if (!in_array($_POST['basedirectory_for_attachments'], $modSettings['attachment_basedirectories'])) {
$modSettings['attachment_basedirectories'][$modSettings['currentAttachmentUploadDir']] = $_POST['basedirectory_for_attachments'];
updateSettings(array('attachment_basedirectories' => serialize($modSettings['attachment_basedirectories']), 'currentAttachmentUploadDir' => $currentAttachmentUploadDir));
}
}
}
call_integration_hook('integrate_save_attachment_settings');
saveDBSettings($config_vars);
redirectexit('action=admin;area=manageattachments;sa=attachments');
}
$context['post_url'] = $scripturl . '?action=admin;area=manageattachments;save;sa=attachments';
prepareDBSettingContext($config_vars);
$context['sub_template'] = 'show_settings';
}
/**
* Supporting function for the database maintenance area.
*/
public function action_database()
{
global $context, $modSettings, $maintenance, $iknowitmaybeunsafe;
// We need this, really..
require_once SUBSDIR . '/Maintenance.subs.php';
// Set up the sub-template
$context['sub_template'] = 'maintain_database';
if (DB_TYPE == 'MySQL') {
$body_type = fetchBodyType();
$context['convert_to'] = $body_type == 'text' ? 'mediumtext' : 'text';
$context['convert_to_suggest'] = $body_type != 'text' && !empty($modSettings['max_messageLength']) && $modSettings['max_messageLength'] < 65536;
}
// Check few things to give advices before make a backup
// If safe mod is enable the external tool is *always* the best (and probably the only) solution
$context['safe_mode_enable'] = @ini_get('safe_mode');
// This is just a...guess
$messages = countMessages();
// 256 is what we use in the backup script
setMemoryLimit('256M');
$memory_limit = memoryReturnBytes(ini_get('memory_limit')) / (1024 * 1024);
// Zip limit is set to more or less 1/4th the size of the available memory * 1500
// 1500 is an estimate of the number of messages that generates a database of 1 MB (yeah I know IT'S AN ESTIMATION!!!)
// Why that? Because the only reliable zip package is the one sent out the first time,
// so when the backup takes 1/5th (just to stay on the safe side) of the memory available
$zip_limit = $memory_limit * 1500 / 5;
// Here is more tricky: it depends on many factors, but the main idea is that
// if it takes "too long" the backup is not reliable. So, I know that on my computer it take
// 20 minutes to backup 2.5 GB, of course my computer is not representative, so I'll multiply by 4 the time.
// I would consider "too long" 5 minutes (I know it can be a long time, but let's start with that):
// 80 minutes for a 2.5 GB and a 5 minutes limit means 160 MB approx
$plain_limit = 240000;
// Last thing: are we able to gain time?
$current_time_limit = ini_get('max_execution_time');
@set_time_limit(159);
//something strange just to be sure
$new_time_limit = ini_get('max_execution_time');
@set_time_limit($current_time_limit);
$context['use_maintenance'] = 0;
// External tool if:
// * safe_mode enable OR
// * cannot change the execution time OR
// * cannot reset timeout
if ($context['safe_mode_enable'] || empty($new_time_limit) || $current_time_limit == $new_time_limit && !function_exists('apache_reset_timeout')) {
$context['suggested_method'] = 'use_external_tool';
} elseif ($zip_limit < $plain_limit && $messages < $zip_limit) {
$context['suggested_method'] = 'zipped_file';
} elseif ($zip_limit > $plain_limit || $zip_limit < $plain_limit && $plain_limit < $messages) {
$context['suggested_method'] = 'use_external_tool';
$context['use_maintenance'] = empty($maintenance) ? 2 : 0;
} else {
$context['use_maintenance'] = 1;
$context['suggested_method'] = 'plain_text';
}
loadTemplate('Packages');
loadLanguage('Packages');
// $context['package_ftp'] may be set action_backup_display when an error occur
if (!isset($context['package_ftp'])) {
$context['package_ftp'] = array('form_elements_only' => true, 'server' => '', 'port' => '', 'username' => '', 'path' => '', 'error' => '');
}
$context['skip_security'] = !empty($iknowitmaybeunsafe);
}
/**
* Helper function to set the system memory to a needed value
*
* What it does:
* - If the needed memory is greater than current, will attempt to get more
* - if in_use is set to true, will also try to take the current memory usage in to account
*
* @param string $needed The amount of memory to request, if needed, like 256M
* @param bool $in_use Set to true to account for current memory usage of the script
* @return boolean true if we have at least the needed memory
*/
function setMemoryLimit($needed, $in_use = false)
{
// Everything in bytes
$memory_current = memoryReturnBytes(ini_get('memory_limit'));
$memory_needed = memoryReturnBytes($needed);
// Should we account for how much is currently being used?
if ($in_use) {
$memory_needed += memory_get_usage();
}
// If more is needed, request it
if ($memory_current < $memory_needed) {
@ini_set('memory_limit', ceil($memory_needed / 1048576) . 'M');
$memory_current = memoryReturnBytes(ini_get('memory_limit'));
}
$memory_current = max($memory_current, memoryReturnBytes(get_cfg_var('memory_limit')));
// Return success or not
return (bool) ($memory_current >= $memory_needed);
}
/**
* Supporting function for the database maintenance area.
*/
function MaintainDatabase()
{
global $context, $db_type, $db_character_set, $modSettings, $smcFunc, $txt, $maintenance;
// Show some conversion options?
$context['convert_utf8'] = $db_type == 'mysql' && (!isset($db_character_set) || $db_character_set !== 'utf8' || empty($modSettings['global_character_set']) || $modSettings['global_character_set'] !== 'UTF-8') && version_compare('4.1.2', preg_replace('~\\-.+?$~', '', $smcFunc['db_server_info']()), '<=');
$context['convert_entities'] = $db_type == 'mysql' && isset($db_character_set, $modSettings['global_character_set']) && $db_character_set === 'utf8' && $modSettings['global_character_set'] === 'UTF-8';
if ($db_type == 'mysql') {
db_extend('packages');
$colData = $smcFunc['db_list_columns']('{db_prefix}messages', true);
foreach ($colData as $column) {
if ($column['name'] == 'body') {
$body_type = $column['type'];
}
}
$context['convert_to'] = $body_type == 'text' ? 'mediumtext' : 'text';
$context['convert_to_suggest'] = $body_type != 'text' && !empty($modSettings['max_messageLength']) && $modSettings['max_messageLength'] < 65536;
}
// Check few things to give advices before make a backup
// If safe mod is enable the external tool is *always* the best (and probably the only) solution
$context['safe_mode_enable'] = @ini_get('safe_mode');
// This is just a...guess
$result = $smcFunc['db_query']('', '
SELECT COUNT(*)
FROM {db_prefix}messages', array());
list($messages) = $smcFunc['db_fetch_row']($result);
$smcFunc['db_free_result']($result);
// 256 is what we use in the backup script
setMemoryLimit('256M');
$memory_limit = memoryReturnBytes(ini_get('memory_limit')) / (1024 * 1024);
// Zip limit is set to more or less 1/4th the size of the available memory * 1500
// 1500 is an estimate of the number of messages that generates a database of 1 MB (yeah I know IT'S AN ESTIMATION!!!)
// Why that? Because the only reliable zip package is the one sent out the first time,
// so when the backup takes 1/5th (just to stay on the safe side) of the memory available
$zip_limit = $memory_limit * 1500 / 5;
// Here is more tricky: it depends on many factors, but the main idea is that
// if it takes "too long" the backup is not reliable. So, I know that on my computer it take
// 20 minutes to backup 2.5 GB, of course my computer is not representative, so I'll multiply by 4 the time.
// I would consider "too long" 5 minutes (I know it can be a long time, but let's start with that):
// 80 minutes for a 2.5 GB and a 5 minutes limit means 160 MB approx
$plain_limit = 240000;
// Last thing: are we able to gain time?
$current_time_limit = ini_get('max_execution_time');
@set_time_limit(159);
//something strange just to be sure
$new_time_limit = ini_get('max_execution_time');
$context['use_maintenance'] = 0;
// External tool if:
// * safe_mode enable OR
// * cannot change the execution time OR
// * cannot reset timeout
if ($context['safe_mode_enable'] || empty($new_time_limit) || $current_time_limit == $new_time_limit && !function_exists('apache_reset_timeout')) {
$context['suggested_method'] = 'use_external_tool';
} elseif ($zip_limit < $plain_limit && $messages < $zip_limit) {
$context['suggested_method'] = 'zipped_file';
} elseif ($zip_limit > $plain_limit || $zip_limit < $plain_limit && $plain_limit < $messages) {
$context['suggested_method'] = 'use_external_tool';
$context['use_maintenance'] = empty($maintenance) ? 2 : 0;
} else {
$context['use_maintenance'] = 1;
$context['suggested_method'] = 'plain_text';
}
if (isset($_GET['done']) && $_GET['done'] == 'convertutf8') {
$context['maintenance_finished'] = $txt['utf8_title'];
}
if (isset($_GET['done']) && $_GET['done'] == 'convertentities') {
$context['maintenance_finished'] = $txt['entity_convert_title'];
}
}