<?php
/* Copyright (C) 2006-2014  Laurent Destailleur <eldy@users.sourceforge.net>
 * Copyright (C) 2011       Juanjo Menent       <jmenent@2byte.es>
 * Copyright (C) 2015       Raphaël Doursenaud  <rdoursenaud@gpcsolutions.fr>
 *
* 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 3 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, see <https://www.gnu.org/licenses/>.
*/

/**
 *		\file 		htdocs/admin/tools/export.php
 *		\brief      Page to export a database into a dump file
 */

require '../../main.inc.php';
require_once DOL_DOCUMENT_ROOT.'/core/lib/admin.lib.php';
require_once DOL_DOCUMENT_ROOT.'/core/lib/files.lib.php';
require_once DOL_DOCUMENT_ROOT.'/core/class/utils.class.php';
require_once DOL_DOCUMENT_ROOT.'/core/class/html.formfile.class.php';

$langs->load("admin");

$action = GETPOST('action', 'alpha');
$what = GETPOST('what', 'alpha');
$export_type = GETPOST('export_type', 'alpha');
$file = GETPOST('filename_template', 'alpha');

// Load variable for pagination
$limit = GETPOST('limit', 'int') ?GETPOST('limit', 'int') : $conf->liste_limit;
$sortfield = GETPOST('sortfield', 'alpha');
$sortorder = GETPOST('sortorder', 'alpha');
$page = GETPOSTISSET('pageplusone') ? (GETPOST('pageplusone') - 1) : GETPOST("page", 'int');
if (empty($page) || $page == -1 || GETPOST('button_search', 'alpha') || GETPOST('button_removefilter', 'alpha') || (empty($toselect) && $massaction === '0')) { $page = 0; }     // If $page is not defined, or '' or -1 or if we click on clear filters or if we select empty mass action
$offset = $limit * $page;
if (!$sortorder) $sortorder = "DESC";
if (!$sortfield) $sortfield = "date";

if (!$user->admin) accessforbidden();

if ($file && !$what)
{
    //print DOL_URL_ROOT.'/dolibarr_export.php';
	header("Location: ".DOL_URL_ROOT.'/admin/tools/dolibarr_export.php?msg='.urlencode($langs->trans("ErrorFieldRequired", $langs->transnoentities("ExportMethod"))).(GETPOST('page_y', 'int') ? '&page_y='.GETPOST('page_y', 'int') : ''));
    exit;
}

$errormsg = '';


/*
 * Actions
 */

if ($action == 'delete')
{
	$file = $conf->admin->dir_output.'/'.GETPOST('urlfile');
	$ret = dol_delete_file($file, 1);
	if ($ret) setEventMessages($langs->trans("FileWasRemoved", GETPOST('urlfile')), null, 'mesgs');
	else setEventMessages($langs->trans("ErrorFailToDeleteFile", GETPOST('urlfile')), null, 'errors');
	$action = '';
}


/*
 * View
 */

$_SESSION["commandbackuplastdone"] = '';
$_SESSION["commandbackuptorun"] = '';
$_SESSION["commandbackupresult"] = '';

// Increase limit of time. Works only if we are not in safe mode
$ExecTimeLimit = 600;
if (!empty($ExecTimeLimit))
{
    $err = error_reporting();
    error_reporting(0); // Disable all errors
    //error_reporting(E_ALL);
    @set_time_limit($ExecTimeLimit); // Need more than 240 on Windows 7/64
    error_reporting($err);
}
$MemoryLimit = 0;
if (!empty($MemoryLimit))
{
    @ini_set('memory_limit', $MemoryLimit);
}

$form = new Form($db);
$formfile = new FormFile($db);

//$help_url='EN:Backups|FR:Sauvegardes|ES:Copias_de_seguridad';
//llxHeader('','',$help_url);

//print load_fiche_titre($langs->trans("Backup"),'','title_setup');


// Start with empty buffer
$dump_buffer = '';
$dump_buffer_len = 0;

// We will send fake headers to avoid browser timeout when buffering
$time_start = time();


$outputdir  = $conf->admin->dir_output.'/backup';
$result = dol_mkdir($outputdir);


$utils = new Utils($db);


// MYSQL
if ($what == 'mysql')
{
    $cmddump = GETPOST("mysqldump"); // Do not sanitize here with 'alpha', will be sanitize later by dol_sanitizePathName and escapeshellarg
    $cmddump = dol_sanitizePathName($cmddump);

    if (!empty($dolibarr_main_restrict_os_commands))
    {
        $arrayofallowedcommand = explode(',', $dolibarr_main_restrict_os_commands);
        dol_syslog("Command are restricted to ".$dolibarr_main_restrict_os_commands.". We check that one of this command is inside ".$cmddump);
        $basenamecmddump = basename($cmddump);
        if (!in_array($basenamecmddump, $arrayofallowedcommand))	// the provided command $cmddump must be an allowed command
        {
            $errormsg = $langs->trans('CommandIsNotInsideAllowedCommands');
        }
    }

    if (!$errormsg && $cmddump)
    {
        dolibarr_set_const($db, 'SYSTEMTOOLS_MYSQLDUMP', $cmddump, 'chaine', 0, '', $conf->entity);
    }

    if (!$errormsg)
    {
        $utils->dumpDatabase(GETPOST('compression', 'alpha'), $what, 0, $file);
        $errormsg = $utils->error;
        $_SESSION["commandbackuplastdone"] = $utils->result['commandbackuplastdone'];
        $_SESSION["commandbackuptorun"] = $utils->result['commandbackuptorun'];
    }
}

// MYSQL NO BIN
if ($what == 'mysqlnobin')
{
    $utils->dumpDatabase(GETPOST('compression', 'alpha'), $what, 0, $file);

    $errormsg = $utils->error;
    $_SESSION["commandbackuplastdone"] = $utils->result['commandbackuplastdone'];
    $_SESSION["commandbackuptorun"] = $utils->result['commandbackuptorun'];
}

// POSTGRESQL
if ($what == 'postgresql')
{
    $cmddump = GETPOST("postgresqldump"); // Do not sanitize here with 'alpha', will be sanitize later by dol_sanitizePathName and escapeshellarg
    $cmddump = dol_sanitizePathName($cmddump);

    /* Not required, the command is output on screen but not ran for pgsql
    if (! empty($dolibarr_main_restrict_os_commands))
    {
    	$arrayofallowedcommand=explode(',', $dolibarr_main_restrict_os_commands);
    	dol_syslog("Command are restricted to ".$dolibarr_main_restrict_os_commands.". We check that one of this command is inside ".$cmddump);
    	$basenamecmddump=basename($cmddump);
    	if (! in_array($basenamecmddump, $arrayofallowedcommand))	// the provided command $cmddump must be an allowed command
    	{
    		$errormsg=$langs->trans('CommandIsNotInsideAllowedCommands');
    	}
    } */

    if (!$errormsg && $cmddump)
    {
        dolibarr_set_const($db, 'SYSTEMTOOLS_POSTGRESQLDUMP', $cmddump, 'chaine', 0, '', $conf->entity);
    }

    if (!$errormsg)
    {
        $utils->dumpDatabase(GETPOST('compression', 'alpha'), $what, 0, $file);
        $errormsg = $utils->error;
        $_SESSION["commandbackuplastdone"] = $utils->result['commandbackuplastdone'];
        $_SESSION["commandbackuptorun"] = $utils->result['commandbackuptorun'];
    }

    $what = ''; // Clear to show message to run command
}


if ($errormsg)
{
	setEventMessages($langs->trans("Error")." : ".$errormsg, null, 'errors');

	$resultstring = '';
    $resultstring .= '<div class="error">'.$langs->trans("Error")." : ".$errormsg.'</div>';

    $_SESSION["commandbackupresult"] = $resultstring;
}
else
{
	if ($what)
	{
        setEventMessages($langs->trans("BackupFileSuccessfullyCreated").'.<br>'.$langs->trans("YouCanDownloadBackupFile"), null, 'mesgs');

        $resultstring = '<div class="ok">';
        $resultstring .= $langs->trans("BackupFileSuccessfullyCreated").'.<br>';
        $resultstring .= $langs->trans("YouCanDownloadBackupFile");
        $resultstring .= '<div>';

        $_SESSION["commandbackupresult"] = $resultstring;
	}
	/*else
	{
		setEventMessages($langs->trans("YouMustRunCommandFromCommandLineAfterLoginToUser",$dolibarr_main_db_user,$dolibarr_main_db_user), null, 'warnings');
	}*/
}


/*
$filearray=dol_dir_list($conf->admin->dir_output.'/backup','files',0,'','',$sortfield,(strtolower($sortorder)=='asc'?SORT_ASC:SORT_DESC),1);
$result=$formfile->list_of_documents($filearray,null,'systemtools','',1,'backup/',1,0,($langs->trans("NoBackupFileAvailable").'<br>'.$langs->trans("ToBuildBackupFileClickHere",DOL_URL_ROOT.'/admin/tools/dolibarr_export.php')),0,$langs->trans("PreviousDumpFiles"));

print '<br>';
*/

// Redirect to backup page
header("Location: dolibarr_export.php".(GETPOST('page_y', 'int') ? '?page_y='.GETPOST('page_y', 'int') : ''));

$time_end = time();

$db->close();
