<?php
/*
 * FCKeditor - The text editor for Internet - http://www.fckeditor.net
 * Copyright (C) 2003-2010 Frederico Caldeira Knabben
 *
 * == BEGIN LICENSE ==
 *
 * Licensed under the terms of any of the following licenses at your
 * choice:
 *
 *  - GNU General Public License Version 2 or later (the "GPL")
 *    https://www.gnu.org/licenses/gpl.html
 *
 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
 *    https://www.gnu.org/licenses/lgpl.html
 *
 *  - Mozilla Public License Version 1.1 or later (the "MPL")
 *    http://www.mozilla.org/MPL/MPL-1.1.html
 *
 * == END LICENSE ==
 *
 * This is the File Manager Connector for PHP.
 */

/**
 * CombinePaths
 *
 * @param   string $sBasePath     sBasePath
 * @param   string $sFolder       sFolder
 * @return  string                Combined path
 */
function CombinePaths($sBasePath, $sFolder)
{
	return RemoveFromEnd($sBasePath, '/').'/'.RemoveFromStart($sFolder, '/');
}
/**
 * GetResourceTypePath
 *
 * @param 	string		$resourceType	Resource type
 * @param 	string		$sCommand		Command
 * @return	string						Config
 */
function GetResourceTypePath($resourceType, $sCommand)
{
	global $Config;

	if ($sCommand == "QuickUpload") {
		return $Config['QuickUploadPath'][$resourceType];
	} else {
		return $Config['FileTypesPath'][$resourceType];
	}
}

/**
 * GetResourceTypeDirectory
 *
 * @param string $resourceType	Resource type
 * @param string $sCommand		Command
 * @return string
 */
function GetResourceTypeDirectory($resourceType, $sCommand)
{
	global $Config;
	if ($sCommand == "QuickUpload") {
		if (strlen($Config['QuickUploadAbsolutePath'][$resourceType]) > 0) {
			return $Config['QuickUploadAbsolutePath'][$resourceType];
		}

		// Map the "UserFiles" path to a local directory.
		return Server_MapPath($Config['QuickUploadPath'][$resourceType]);
	} else {
		if (strlen($Config['FileTypesAbsolutePath'][$resourceType]) > 0) {
			return $Config['FileTypesAbsolutePath'][$resourceType];
		}

		// Map the "UserFiles" path to a local directory.
		return Server_MapPath($Config['FileTypesPath'][$resourceType]);
	}
}

/**
 * GetUrlFromPath
 *
 * @param	string 	$resourceType	Resource type
 * @param 	string 	$folderPath		Path
 * @param	string	$sCommand		Command
 * @return	string					Full url
 */
function GetUrlFromPath($resourceType, $folderPath, $sCommand)
{
	return CombinePaths(GetResourceTypePath($resourceType, $sCommand), $folderPath);
}

/**
 * RemoveExtension
 *
 * @param 	string		$fileName	Filename
 * @return	string					String without extension
 */
function RemoveExtension($fileName)
{
	return substr($fileName, 0, strrpos($fileName, '.'));
}
/**
 * ServerMapFolder
 *
 * @param 	string	$resourceType	Resource type
 * @param 	string	$folderPath		Folder
 * @param 	string	$sCommand		Command
 * @return	string
 */
function ServerMapFolder($resourceType, $folderPath, $sCommand)
{
	// Get the resource type directory.
	$sResourceTypePath = GetResourceTypeDirectory($resourceType, $sCommand);

	// Ensure that the directory exists.
	$sErrorMsg = CreateServerFolder($sResourceTypePath);
	if ($sErrorMsg != '') {
		SendError(1, "Error creating folder \"{$sResourceTypePath}\" ({$sErrorMsg})");
	}

	// Return the resource type directory combined with the required path.
	return CombinePaths($sResourceTypePath, $folderPath);
}

/**
 * GetParentFolder
 *
 * @param	string	$folderPath		Folder path
 * @return 	string					Parent folder
 */
function GetParentFolder($folderPath)
{
	$sPattern = "-[/\\\\][^/\\\\]+[/\\\\]?$-";
	return preg_replace($sPattern, '', $folderPath);
}

/**
 * CreateServerFolder
 *
 * @param 	string	$folderPath		Folder
 * @param 	string	$lastFolder		Folder
 * @return	string					''=success, error message otherwise
 */
function CreateServerFolder($folderPath, $lastFolder = null)
{
	global $Config;
	$sParent = GetParentFolder($folderPath);

	// Ensure the folder path has no double-slashes, or mkdir may fail on certain platforms
	while (strpos($folderPath, '//') !== false) {
		$folderPath = str_replace('//', '/', $folderPath);
	}

	// Check if the parent exists, or create it.
	if (!empty($sParent) && !file_exists($sParent)) {
		//prevents agains infinite loop when we can't create root folder
		if (!is_null($lastFolder) && $lastFolder === $sParent) {
			return "Can't create $folderPath directory";
		}

		$sErrorMsg = CreateServerFolder($sParent, $folderPath);
		if ($sErrorMsg != '') {
			return $sErrorMsg;
		}
	}

	if (!file_exists($folderPath)) {
		// Turn off all error reporting.
		error_reporting(0);

		$php_errormsg = '';
		// Enable error tracking to catch the error.
		ini_set('track_errors', '1');

		if (isset($Config['ChmodOnFolderCreate']) && !$Config['ChmodOnFolderCreate']) {
			mkdir($folderPath);
		} else {
			$permissions = '0777';
			if (isset($Config['ChmodOnFolderCreate']) && $Config['ChmodOnFolderCreate']) {
				$permissions = (string) $Config['ChmodOnFolderCreate'];
			}
			$permissionsdec = octdec($permissions);
			$permissionsdec |= octdec('0111'); // Set x bit required for directories
			dol_syslog("io.php permission = ".$permissions." ".$permissionsdec." ".decoct($permissionsdec));
			// To create the folder with 0777 permissions, we need to set umask to zero.
			$oldumask = umask(0);
			mkdir($folderPath, $permissionsdec);
			umask($oldumask);
		}

		$sErrorMsg = $php_errormsg;

		// Restore the configurations.
		ini_restore('track_errors');
		ini_restore('error_reporting');

		return $sErrorMsg;
	} else {
		return '';
	}
}

/**
 * Get Root Path
 *
 * @return  string              real path
 */
function GetRootPath()
{
	if (!isset($_SERVER)) {
		global $_SERVER;
	}
	$sRealPath = realpath('./');
	// #2124 ensure that no slash is at the end
	$sRealPath = rtrim($sRealPath, "\\/");

	$sSelfPath = $_SERVER['PHP_SELF'];
	$sSelfPath = substr($sSelfPath, 0, strrpos($sSelfPath, '/'));

	$sSelfPath = str_replace('/', DIRECTORY_SEPARATOR, $sSelfPath);

	$position = strpos($sRealPath, $sSelfPath);

	// This can check only that this script isn't run from a virtual dir
	// But it avoids the problems that arise if it isn't checked
	if ($position === false || $position <> strlen($sRealPath) - strlen($sSelfPath)) {
		SendError(1, 'Sorry, can\'t map "UserFilesPath" to a physical path. You must set the "UserFilesAbsolutePath" value in "editor/filemanager/connectors/php/config.php".');
	}

	return substr($sRealPath, 0, $position);
}

/**
 *  Emulate the asp Server.mapPath function.
 *  @param	string		$path		given an url path return the physical directory that it corresponds to
 *  @return	string					Path
 */
function Server_MapPath($path)
{
	// This function is available only for Apache
	if (function_exists('apache_lookup_uri')) {
		$info = apache_lookup_uri($path);
		return $info->filename.$info->path_info;
	}

	// This isn't correct but for the moment there's no other solution
	// If this script is under a virtual directory or symlink it will detect the problem and stop
	return GetRootPath().$path;
}

/**
 * Is Allowed Extension
 *
 * @param   string $sExtension      File extension
 * @param   string $resourceType    ressource type
 * @return  boolean                 true or false
 */
function IsAllowedExt($sExtension, $resourceType)
{
	global $Config;
	// Get the allowed and denied extensions arrays.
	$arAllowed = $Config['AllowedExtensions'][$resourceType];
	$arDenied = $Config['DeniedExtensions'][$resourceType];

	if (count($arAllowed) > 0 && !in_array($sExtension, $arAllowed)) {
		return false;
	}

	if (count($arDenied) > 0 && in_array($sExtension, $arDenied)) {
		return false;
	}

	return true;
}

/**
 * Is Allowed Type
 *
 * @param   string $resourceType    ressource type
 * @return  boolean                 true or false
 */
function IsAllowedType($resourceType)
{
	global $Config;
	if (!in_array($resourceType, $Config['ConfigAllowedTypes'])) {
		return false;
	}

	return true;
}

/**
 * IsAllowedCommand
 *
 * @param   string		$sCommand		Command
 * @return  boolean						True or false
 */
function IsAllowedCommand($sCommand)
{
	global $Config;

	if (!in_array($sCommand, $Config['ConfigAllowedCommands'])) {
		return false;
	}

	return true;
}

/**
 * GetCurrentFolder
 *
 * @return	string		current folder
 */
function GetCurrentFolder()
{
	if (!isset($_GET)) {
		global $_GET;
	}
	$sCurrentFolder = isset($_GET['CurrentFolder']) ? GETPOST('CurrentFolder', '', 1) : '/';

	// Check the current folder syntax (must begin and start with a slash).
	if (!preg_match('|/$|', $sCurrentFolder)) {
		$sCurrentFolder .= '/';
	}
	if (strpos($sCurrentFolder, '/') !== 0) {
		$sCurrentFolder = '/'.$sCurrentFolder;
	}

	// Ensure the folder path has no double-slashes
	while (strpos($sCurrentFolder, '//') !== false) {
		$sCurrentFolder = str_replace('//', '/', $sCurrentFolder);
	}

	// Check for invalid folder paths (..)
	if (strpos($sCurrentFolder, '..') || strpos($sCurrentFolder, "\\")) {
		SendError(102, '');
	}

	if (preg_match(",(/\.)|[[:cntrl:]]|(//)|(\\\\)|([\:\*\?\"\<\>\|]),", $sCurrentFolder)) {
		SendError(102, '');
	}

	return $sCurrentFolder;
}

/**
 * Do a cleanup of the folder name to avoid possible problems
 *
 * @param	string	$sNewFolderName		Folder
 * @return	string						Folder sanitized
 */
function SanitizeFolderName($sNewFolderName)
{
	$sNewFolderName = stripslashes($sNewFolderName);

	// Remove . \ / | : ? * " < >
	$sNewFolderName = preg_replace('/\\.|\\\\|\\/|\\||\\:|\\?|\\*|"|<|>|[[:cntrl:]]/', '_', $sNewFolderName);

	return $sNewFolderName;
}

/**
 * Do a cleanup of the file name to avoid possible problems
 *
 * @param	string	$sNewFileName		Folder
 * @return	string						Folder sanitized
 */
function SanitizeFileName($sNewFileName)
{
	global $Config;

	$sNewFileName = stripslashes($sNewFileName);

	// Replace dots in the name with underscores (only one dot can be there... security issue).
	if ($Config['ForceSingleExtension']) {
		$sNewFileName = preg_replace('/\\.(?![^.]*$)/', '_', $sNewFileName);
	}

	// Remove \ / | : ? * " < >
	$sNewFileName = preg_replace('/\\\\|\\/|\\||\\:|\\?|\\*|"|<|>|[[:cntrl:]]/', '_', $sNewFileName);

	return $sNewFileName;
}

/**
 * This is the function that sends the results of the uploading process.
 *
 * @param	string		$errorNumber	errorNumber
 * @param	string		$fileUrl		fileUrl
 * @param	string		$fileName		fileName
 * @param	string		$customMsg		customMsg
 * @return	void
 */
function SendUploadResults($errorNumber, $fileUrl = '', $fileName = '', $customMsg = '')
{
	// Minified version of the document.domain automatic fix script (#1919).
	// The original script can be found at _dev/domain_fix_template.js
	echo <<<EOF
<script type="text/javascript">
(function(){var d=document.domain;while (true){try{var A=window.parent.document.domain;break;}catch(e) {};d=d.replace(/.*?(?:\.|$)/,'');if (d.length==0) break;try{document.domain=d;}catch (e){break;}}})();
EOF;

	if ($errorNumber && $errorNumber != 201) {
		$fileUrl = "";
		$fileName = "";
	}

	$rpl = array('\\' => '\\\\', '"' => '\\"');
	echo 'window.parent.OnUploadCompleted('.$errorNumber.',"'.strtr($fileUrl, $rpl).'","'.strtr($fileName, $rpl).'", "'.strtr($customMsg, $rpl).'");';
	echo '</script>';
	exit;
}


// @CHANGE

// This is the function that sends the results of the uploading process to CKE.
/**
 * SendCKEditorResults
 *
 * @param   string  $callback       callback
 * @param   string  $sFileUrl       sFileUrl
 * @param   string  $customMsg      customMsg
 * @return  void
 */
function SendCKEditorResults($callback, $sFileUrl, $customMsg = '')
{
	echo '<script type="text/javascript">';

	$rpl = array('\\' => '\\\\', '"' => '\\"');

	echo 'window.parent.CKEDITOR.tools.callFunction("'.$callback.'","'.strtr($sFileUrl, $rpl).'", "'.strtr($customMsg, $rpl).'");';

	echo '</script>';
}