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<?php
/* Copyright (C) 2004-2005 Rodolphe Quiedeville <rodolphe@quiedeville.org>
* Copyright (C) 2005-2016 Laurent Destailleur <eldy@users.sourceforge.net>
* Copyright (C) 2005-2016 Regis Houssin <regis.houssin@inodbox.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 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 <http://www.gnu.org/licenses/>.
* or see http://www.gnu.org/
*/
/**
* \file htdocs/viewimage.php
* \brief Wrapper to show images into Dolibarr screens.
* \remarks Call to wrapper is :
* DOL_URL_ROOT.'/viewimage.php?modulepart=diroffile&file=relativepathofofile&cache=0
* DOL_URL_ROOT.'/viewimage.php?hashp=sharekey
*/
//if (! defined('NOREQUIREUSER')) define('NOREQUIREUSER','1'); // Not disabled cause need to load personalized language
//if (! defined('NOREQUIREDB')) define('NOREQUIREDB','1'); // Not disabled cause need to load personalized language
if (! defined('NOREQUIRESOC')) define('NOREQUIRESOC', '1');
if (! defined('NOREQUIRETRAN')) define('NOREQUIRETRAN', '1');
if (! defined('NOCSRFCHECK')) define('NOCSRFCHECK', '1');
if (! defined('NOTOKENRENEWAL')) define('NOTOKENRENEWAL', '1');
if (! defined('NOREQUIREMENU')) define('NOREQUIREMENU', '1');
if (! defined('NOREQUIREHTML')) define('NOREQUIREHTML', '1');
if (! defined('NOREQUIREAJAX')) define('NOREQUIREAJAX', '1');
// Some value of modulepart can be used to get resources that are public so no login are required.
// Note that only directory logo is free to access without login.
if (isset($_GET["modulepart"]) && $_GET["modulepart"] == 'mycompany' && preg_match('/^\/?logos\//', $_GET['file']))
{
if (! defined("NOLOGIN")) define("NOLOGIN", 1);
if (! defined("NOCSRFCHECK")) define("NOCSRFCHECK", 1); // We accept to go on this page from external web site.
if (! defined("NOIPCHECK")) define("NOIPCHECK", 1); // Do not check IP defined into conf $dolibarr_main_restrict_ip
}
// For direct external download link, we don't need to load/check we are into a login session
if (isset($_GET["hashp"]) && ! defined("NOLOGIN"))
{
if (! defined("NOLOGIN")) define("NOLOGIN", 1);
if (! defined("NOCSRFCHECK")) define("NOCSRFCHECK", 1); // We accept to go on this page from external web site.
if (! defined("NOIPCHECK")) define("NOIPCHECK", 1); // Do not check IP defined into conf $dolibarr_main_restrict_ip
}
// Some value of modulepart can be used to get resources that are public so no login are required.
if ((isset($_GET["modulepart"]) && $_GET["modulepart"] == 'medias'))
{
if (! defined("NOLOGIN")) define("NOLOGIN", 1);
if (! defined("NOCSRFCHECK")) define("NOCSRFCHECK", 1); // We accept to go on this page from external web site.
if (! defined("NOIPCHECK")) define("NOIPCHECK", 1); // Do not check IP defined into conf $dolibarr_main_restrict_ip
}
// For multicompany
$entity=(! empty($_GET['entity']) ? (int) $_GET['entity'] : (! empty($_POST['entity']) ? (int) $_POST['entity'] : 1));
if (is_numeric($entity)) define("DOLENTITY", $entity);
/**
* Header empty
*
* @return void
*/
function llxHeader()
{
}
/**
* Footer empty
*
* @return void
*/
function llxFooter()
{
}
require 'main.inc.php'; // Load $user and permissions
require_once DOL_DOCUMENT_ROOT.'/core/lib/files.lib.php';
$action=GETPOST('action', 'alpha');
$original_file=GETPOST('file', 'alphanohtml'); // Do not use urldecode here ($_GET are already decoded by PHP).
$hashp=GETPOST('hashp', 'aZ09');
$modulepart=GETPOST('modulepart', 'alpha');
$urlsource=GETPOST('urlsource', 'alpha');
$entity=GETPOST('entity', 'int')?GETPOST('entity', 'int'):$conf->entity;
// Security check
if (empty($modulepart) && empty($hashp)) accessforbidden('Bad link. Bad value for parameter modulepart', 0, 0, 1);
if (empty($original_file) && empty($hashp) && $modulepart != 'barcode') accessforbidden('Bad link. Missing identification to find file (original_file or hashp)', 0, 0, 1);
if ($modulepart == 'fckeditor') $modulepart='medias'; // For backward compatibility
/*
* Actions
*/
// None
/*
* View
*/
if (GETPOST("cache", 'alpha'))
{
// Important: Following code is to avoid page request by browser and PHP CPU at
// each Dolibarr page access.
if (empty($dolibarr_nocache))
{
header('Cache-Control: max-age=3600, public, must-revalidate');
header('Pragma: cache'); // This is to avoid having Pragma: no-cache
}
else header('Cache-Control: no-cache');
//print $dolibarr_nocache; exit;
}
// If we have a hash public (hashp), we guess the original_file.
if (! empty($hashp))
{
include_once DOL_DOCUMENT_ROOT.'/ecm/class/ecmfiles.class.php';
$ecmfile=new EcmFiles($db);
$result = $ecmfile->fetch(0, '', '', '', $hashp);
if ($result > 0)
{
$tmp = explode('/', $ecmfile->filepath, 2); // $ecmfile->filepath is relative to document directory
// filepath can be 'users/X' or 'X/propale/PR11111'
if (is_numeric($tmp[0])) // If first tmp is numeric, it is subdir of company for multicompany, we take next part.
{
$tmp = explode('/', $tmp[1], 2);
}
$moduleparttocheck = $tmp[0]; // moduleparttocheck is first part of path
if ($modulepart) // Not required, so often not defined, for link using public hashp parameter.
{
if ($moduleparttocheck == $modulepart)
{
// We remove first level of directory
$original_file = (($tmp[1]?$tmp[1].'/':'').$ecmfile->filename); // this is relative to module dir
//var_dump($original_file); exit;
}
else
{
accessforbidden('Bad link. File is from another module part.', 0, 0, 1);
}
}
else
{
$modulepart = $moduleparttocheck;
$original_file = (($tmp[1]?$tmp[1].'/':'').$ecmfile->filename); // this is relative to module dir
}
}
else
{
$langs->load("errors");
accessforbidden($langs->trans("ErrorFileNotFoundWithSharedLink"), 0, 0, 1);
}
}
// Define mime type
$type = 'application/octet-stream';
if (GETPOST('type', 'alpha')) $type=GETPOST('type', 'alpha');
else $type=dol_mimetype($original_file);
// Security: This wrapper is for images. We do not allow type/html
if (preg_match('/html/i', $type)) accessforbidden('Error: Using the image wrapper to output a file with a mime type HTML is not possible.', 0, 0, 1);
// Security: This wrapper is for images. We do not allow files ending with .noexe
if (preg_match('/\.noexe$/i', $original_file)) accessforbidden('Error: Using the image wrapper to output a file ending with .noexe is not allowed.', 0, 0, 1);
// Security: Delete string ../ into $original_file
$original_file = str_replace("../", "/", $original_file);
// Find the subdirectory name as the reference
$refname=basename(dirname($original_file)."/");
// Security check
if (empty($modulepart)) accessforbidden('Bad value for parameter modulepart', 0, 0, 1);
$check_access = dol_check_secure_access_document($modulepart, $original_file, $entity, $refname);
$accessallowed = $check_access['accessallowed'];
$sqlprotectagainstexternals = $check_access['sqlprotectagainstexternals'];
$fullpath_original_file = $check_access['original_file']; // $fullpath_original_file is now a full path name
if (! empty($hashp))
{
$accessallowed = 1; // When using hashp, link is public so we force $accessallowed
$sqlprotectagainstexternals = '';
}
else
{
// Basic protection (against external users only)
if ($user->societe_id > 0)
{
if ($sqlprotectagainstexternals)
{
$resql = $db->query($sqlprotectagainstexternals);
if ($resql)
{
$num=$db->num_rows($resql);
$i=0;
while ($i < $num)
{
$obj = $db->fetch_object($resql);
if ($user->societe_id != $obj->fk_soc)
{
$accessallowed=0;
break;
}
$i++;
}
}
}
}
}
// Security:
// Limit access if permissions are wrong
if (! $accessallowed)
{
accessforbidden();
}
// Security:
// On interdit les remontees de repertoire ainsi que les pipe dans les noms de fichiers.
if (preg_match('/\.\./', $fullpath_original_file) || preg_match('/[<>|]/', $fullpath_original_file))
{
dol_syslog("Refused to deliver file ".$fullpath_original_file);
print "ErrorFileNameInvalid: ".$original_file;
exit;
}
if ($modulepart == 'barcode')
{
$generator=GETPOST("generator", "alpha");
$code=GETPOST("code", 'none'); // This can be rich content (qrcode, datamatrix, ...)
$encoding=GETPOST("encoding", "alpha");
$readable=GETPOST("readable", 'alpha')?GETPOST("readable", "alpha"):"Y";
if (empty($generator) || empty($encoding))
{
print 'Error: Parameter "generator" or "encoding" not defined';
exit;
}
$dirbarcode=array_merge(array("/core/modules/barcode/doc/"), $conf->modules_parts['barcode']);
$result=0;
foreach($dirbarcode as $reldir)
{
$dir=dol_buildpath($reldir, 0);
$newdir=dol_osencode($dir);
// Check if directory exists (we do not use dol_is_dir to avoid loading files.lib.php)
if (! is_dir($newdir)) continue;
$result=@include_once $newdir.$generator.'.modules.php';
if ($result) break;
}
// Load barcode class
$classname = "mod".ucfirst($generator);
$module = new $classname($db);
if ($module->encodingIsSupported($encoding))
{
$result=$module->buildBarCode($code, $encoding, $readable);
}
}
else // Open and return file
{
clearstatcache();
$filename = basename($fullpath_original_file);
// Output files on browser
dol_syslog("viewimage.php return file $fullpath_original_file filename=$filename content-type=$type");
// This test is to avoid error images when image is not available (for example thumbs).
if (! dol_is_file($fullpath_original_file) && empty($_GET["noalt"]))
{
$fullpath_original_file=DOL_DOCUMENT_ROOT.'/public/theme/common/nophoto.png';
/*$error='Error: File '.$_GET["file"].' does not exists or filesystems permissions are not allowed';
print $error;
exit;*/
}
// Permissions are ok and file found, so we return it
if ($type)
{
top_httphead($type);
header('Content-Disposition: inline; filename="'.basename($fullpath_original_file).'"');
}
else
{
top_httphead('image/png');
header('Content-Disposition: inline; filename="'.basename($fullpath_original_file).'"');
}
$fullpath_original_file_osencoded=dol_osencode($fullpath_original_file);
readfile($fullpath_original_file_osencoded);
}
if (is_object($db)) $db->close();