<?php
/***************************************************************
*  Copyright notice
*
*  (c) 1999-2006 Kasper Skaarhoj (kasperYYYY@typo3.com)
*  All rights reserved
*
*  This script is part of the TYPO3 project. The TYPO3 project 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.
*
*  The GNU General Public License can be found at
*  http://www.gnu.org/copyleft/gpl.html.
*  A copy is found in the textfile GPL.txt and important notices to the license
*  from the author is found in LICENSE.txt distributed with these scripts.
*
*
*  This script 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.
*
*  This copyright notice MUST APPEAR in all copies of the script!
***************************************************************/
/**
 * Contains an extension class specifically for authentication/initialization of backend users in TYPO3
 *
 * $Id: class.t3lib_userauthgroup.php 1539 2006-06-28 11:13:43Z k-fish $
 * Revised for TYPO3 3.6 July/2003 by Kasper Skaarhoj
 *
 * @author	Kasper Skaarhoj <kasperYYYY@typo3.com>
 */
/**
 * [CLASS/FUNCTION INDEX of SCRIPT]
 *
 *
 *
 *  135: class t3lib_userAuthGroup extends t3lib_userAuth
 *
 *              SECTION: Permission checking functions:
 *  199:     function isAdmin()
 *  211:     function isMemberOfGroup($groupId)
 *  233:     function doesUserHaveAccess($row,$perms)
 *  250:     function isInWebMount($id,$readPerms='',$exitOnError=0)
 *  277:     function modAccess($conf,$exitOnError)
 *  328:     function getPagePermsClause($perms)
 *  367:     function calcPerms($row)
 *  405:     function isRTE()
 *  439:     function check($type,$value)
 *  456:     function checkAuthMode($table,$field,$value,$authMode)
 *  522:     function checkLanguageAccess($langValue)
 *  544:     function recordEditAccessInternals($table,$idOrRow,$newRecord=FALSE)
 *  619:     function isPSet($lCP,$table,$type='')
 *  636:     function mayMakeShortcut()
 *  650:     function workspaceCannotEditRecord($table,$recData)
 *  689:     function workspaceCannotEditOfflineVersion($table,$recData)
 *  712:     function workspaceAllowLiveRecordsInPID($pid, $table)
 *  733:     function workspaceCreateNewRecord($pid, $table)
 *  752:     function workspaceAllowAutoCreation($table,$id,$recpid)
 *  772:     function workspaceCheckStageForCurrent($stage)
 *  795:     function workspacePublishAccess($wsid)
 *  823:     function workspaceSwapAccess()
 *  835:     function workspaceVersioningTypeAccess($type)
 *  866:     function workspaceVersioningTypeGetClosest($type)
 *
 *              SECTION: Miscellaneous functions
 *  909:     function getTSConfig($objectString,$config='')
 *  935:     function getTSConfigVal($objectString)
 *  947:     function getTSConfigProp($objectString)
 *  959:     function inList($in_list,$item)
 *  970:     function returnWebmounts()
 *  980:     function returnFilemounts()
 *  997:     function jsConfirmation($bitmask)
 *
 *              SECTION: Authentication methods
 * 1035:     function fetchGroupData()
 * 1168:     function fetchGroups($grList,$idList='')
 * 1266:     function setCachedList($cList)
 * 1286:     function addFileMount($title, $altTitle, $path, $webspace, $type)
 * 1333:     function addTScomment($str)
 *
 *              SECTION: Workspaces
 * 1369:     function workspaceInit()
 * 1412:     function checkWorkspace($wsRec,$fields='uid,title,adminusers,members,reviewers,publish_access,stagechg_notification')
 * 1487:     function checkWorkspaceCurrent()
 * 1500:     function setWorkspace($workspaceId)
 * 1528:     function setWorkspacePreview($previewState)
 * 1538:     function getDefaultWorkspace()
 *
 *              SECTION: Logging
 * 1589:     function writelog($type,$action,$error,$details_nr,$details,$data,$tablename='',$recuid='',$recpid='',$event_pid=-1,$NEWid='',$userId=0)
 * 1621:     function simplelog($message, $extKey='', $error=0)
 * 1642:     function checkLogFailures($email, $secondsBack=3600, $max=3)
 *
 * TOTAL FUNCTIONS: 45
 * (This index is automatically created/updated by the extension "extdeveval")
 *
 */

	// Need this for parsing User TSconfig
require_once (PATH_t3lib.'class.t3lib_tsparser.php');





















/**
 * Extension to class.t3lib_userauth.php; Authentication of users in TYPO3 Backend
 *
 * Actually this class is extended again by t3lib_beuserauth which is the actual backend user class that will be instantiated.
 * In fact the two classes t3lib_beuserauth and this class could just as well be one, single class since t3lib_userauthgroup is not - to my knowledge - used separately elsewhere. But for historical reasons they are two separate classes.
 *
 * @author	Kasper Skaarhoj <kasperYYYY@typo3.com>
 * @package TYPO3
 * @subpackage t3lib
 */
class t3lib_userAuthGroup extends t3lib_userAuth {
	var $usergroup_column = 'usergroup';		// Should be set to the usergroup-column (id-list) in the user-record
	var $usergroup_table = 'be_groups';			// The name of the group-table

		// internal
	var $groupData = Array(				// This array holds lists of eg. tables, fields and other values related to the permission-system. See fetchGroupData
		'filemounts' => Array()			// Filemounts are loaded here
	);
	var $workspace = -99;				// User workspace. -99 is ERROR (none available), -1 is offline, 0 is online, >0 is custom workspaces.
	var $workspaceRec = array();		// Custom workspace record if any

	var $userGroups = Array();			// This array will hold the groups that the user is a member of
	var $userGroupsUID = Array();		// This array holds the uid's of the groups in the listed order
	var $groupList ='';					// This is $this->userGroupsUID imploded to a comma list... Will correspond to the 'usergroup_cached_list'
	var $dataLists=array(				// Used internally to accumulate data for the user-group. DONT USE THIS EXTERNALLY! Use $this->groupData instead
		'webmount_list'=>'',
		'filemount_list'=>'',
		'modList'=>'',
		'tables_select'=>'',
		'tables_modify'=>'',
		'pagetypes_select'=>'',
		'non_exclude_fields'=>'',
		'explicit_allowdeny'=>'',
		'allowed_languages' => '',
		'workspace_perms' => '',
		'custom_options' => '',
	);
	var $includeHierarchy=array();		// For debugging/display of order in which subgroups are included.
	var $includeGroupArray=array();		// List of group_id's in the order they are processed.

	var $OS='';							// Set to 'WIN', if windows
	var $TSdataArray=array();			// Used to accumulate the TSconfig data of the user
	var $userTS_text = '';				// Contains the non-parsed user TSconfig
	var $userTS = array();				// Contains the parsed user TSconfig
	var $userTSUpdated=0;				// Set internally if the user TSconfig was parsed and needs to be cached.
	var $userTS_dontGetCached=0;		// Set this from outside if you want the user TSconfig to ALWAYS be parsed and not fetched from cache.

	var $RTE_errors = array();			// RTE availability errors collected.
	var $errorMsg = '';					// Contains last error message

	var $checkWorkspaceCurrent_cache=NULL;	// Cache for checkWorkspaceCurrent()











	/************************************
	 *
	 * Permission checking functions:
	 *
	 ************************************/

	/**
	 * Returns true if user is admin
	 * Basically this function evaluates if the ->user[admin] field has bit 0 set. If so, user is admin.
	 *
	 * @return	boolean
	 */
	function isAdmin()	{
		return (($this->user['admin']&1) ==1);
	}

	/**
	 * Returns true if the current user is a member of group $groupId
	 * $groupId must be set. $this->groupList must contain groups
	 * Will return true also if the user is a member of a group through subgroups.
	 *
	 * @param	integer		Group ID to look for in $this->groupList
	 * @return	boolean
	 */
	function isMemberOfGroup($groupId)	{
		$groupId = intval($groupId);
		if ($this->groupList && $groupId)	{
			return $this->inList($this->groupList, $groupId);
		}
	}

	/**
	 * Checks if the permissions is granted based on a page-record ($row) and $perms (binary and'ed)
	 *
	 * Bits for permissions, see $perms variable:
	 *
	 * 		1 - Show:	See/Copy page and the pagecontent.
	 * 		16- Edit pagecontent: Change/Add/Delete/Move pagecontent.
	 * 		2- Edit page: Change/Move the page, eg. change title, startdate, hidden.
	 * 		4- Delete page: Delete the page and pagecontent.
	 * 		8- New pages: Create new pages under the page.
	 *
	 * @param	array		$row is the pagerow for which the permissions is checked
	 * @param	integer		$perms is the binary representation of the permission we are going to check. Every bit in this number represents a permission that must be set. See function explanation.
	 * @return	boolean		True or False upon evaluation
	 */
	function doesUserHaveAccess($row,$perms)	{
		$userPerms = $this->calcPerms($row);
		return ($userPerms & $perms)==$perms;
	}

	/**
	 * Checks if the page id, $id, is found within the webmounts set up for the user.
	 * This should ALWAYS be checked for any page id a user works with, whether it's about reading, writing or whatever.
	 * The point is that this will add the security that a user can NEVER touch parts outside his mounted pages in the page tree. This is otherwise possible if the raw page permissions allows for it. So this security check just makes it easier to make safe user configurations.
	 * If the user is admin OR if this feature is disabled (fx. by setting TYPO3_CONF_VARS['BE']['lockBeUserToDBmounts']=0) then it returns "1" right away
	 * Otherwise the function will return the uid of the webmount which was first found in the rootline of the input page $id
	 *
	 * @param	integer		Page ID to check
	 * @param	string		Content of "->getPagePermsClause(1)" (read-permissions). If not set, they will be internally calculated (but if you have the correct value right away you can save that database lookup!)
	 * @param	boolean		If set, then the function will exit with an error message.
	 * @return	integer		The page UID of a page in the rootline that matched a mount point
	 */
	function isInWebMount($id,$readPerms='',$exitOnError=0)	{
		if (!$GLOBALS['TYPO3_CONF_VARS']['BE']['lockBeUserToDBmounts'] || $this->isAdmin())	return 1;
		$id = intval($id);
		if (!$readPerms)	$readPerms = $this->getPagePermsClause(1);
		if ($id>0)	{
			$wM = $this->returnWebmounts();
			$rL = t3lib_BEfunc::BEgetRootLine($id,' AND '.$readPerms);

			foreach($rL as $v)	{
				if ($v['uid'] && in_array($v['uid'],$wM))	{
					return $v['uid'];
				}
			}
		}
		if ($exitOnError)	{
			t3lib_BEfunc::typo3PrintError ('Access Error','This page is not within your DB-mounts',0);
			exit;
		}
	}

	/**
	 * Checks access to a backend module with the $MCONF passed as first argument
	 *
	 * @param	array		$MCONF array of a backend module!
	 * @param	boolean		If set, an array will issue an error message and exit.
	 * @return	boolean		Will return true if $MCONF['access'] is not set at all, if the BE_USER is admin or if the module is enabled in the be_users/be_groups records of the user (specifically enabled). Will return false if the module name is not even found in $TBE_MODULES
	 */
	function modAccess($conf,$exitOnError)	{
		if (!t3lib_BEfunc::isModuleSetInTBE_MODULES($conf['name']))	{
			if ($exitOnError)	{
				t3lib_BEfunc::typo3PrintError ('Fatal Error','This module "'.$conf['name'].'" is not enabled in TBE_MODULES',0);
				exit;
			}
			return FALSE;
		}

			// Workspaces check:
		if ($conf['workspaces'])	{
			if (($this->workspace===0 && t3lib_div::inList($conf['workspaces'],'online')) ||
				($this->workspace===-1 && t3lib_div::inList($conf['workspaces'],'offline')) ||
				($this->workspace>0 && t3lib_div::inList($conf['workspaces'],'custom')))	{
					// ok, go on...
			} else {
				if ($exitOnError)	{
					t3lib_BEfunc::typo3PrintError ('Workspace Error','This module "'.$conf['name'].'" is not available under the current workspace',0);
					exit;
				}
				return FALSE;
			}
		}

			// Returns true if conf[access] is not set at all or if the user is admin
		if (!$conf['access']  ||  $this->isAdmin()) return TRUE;

			// If $conf['access'] is set but not with 'admin' then we return true, if the module is found in the modList
		if (!strstr($conf['access'],'admin') && $conf['name'])	{
			$acs = $this->check('modules',$conf['name']);
		}
		if (!$acs && $exitOnError)	{
			t3lib_BEfunc::typo3PrintError ('Access Error','You don\'t have access to this module.',0);
			exit;
		} else return $acs;
	}

	/**
	 * Returns a WHERE-clause for the pages-table where user permissions according to input argument, $perms, is validated.
	 * $perms is the 'mask' used to select. Fx. if $perms is 1 then you'll get all pages that a user can actually see!
	 * 	 	2^0 = show (1)
	 * 		2^1 = edit (2)
	 * 		2^2 = delete (4)
	 * 		2^3 = new (8)
	 * If the user is 'admin' " 1=1" is returned (no effect)
	 * If the user is not set at all (->user is not an array), then " 1=0" is returned (will cause no selection results at all)
	 * The 95% use of this function is "->getPagePermsClause(1)" which will return WHERE clauses for *selecting* pages in backend listings - in other words will this check read permissions.
	 *
	 * @param	integer		Permission mask to use, see function description
	 * @return	string		Part of where clause. Prefix " AND " to this.
	 */
	function getPagePermsClause($perms)	{
		global $TYPO3_CONF_VARS;
		if (is_array($this->user))	{
			if ($this->isAdmin())	{
				return ' 1=1';
			}

			$perms = intval($perms);	// Make sure it's integer.
			$str= ' ('.
				'(pages.perms_everybody & '.$perms.' = '.$perms.')'.	// Everybody
				'OR(pages.perms_userid = '.$this->user['uid'].' AND pages.perms_user & '.$perms.' = '.$perms.')';	// User
			if ($this->groupList){$str.='OR(pages.perms_groupid in ('.$this->groupList.') AND pages.perms_group & '.$perms.' = '.$perms.')';}	// Group (if any is set)
			$str.=')';

			// ****************
			// getPagePermsClause-HOOK
			// ****************
			if (is_array($TYPO3_CONF_VARS['SC_OPTIONS']['t3lib/class.t3lib_userauthgroup.php']['getPagePermsClause'])) {

				foreach($TYPO3_CONF_VARS['SC_OPTIONS']['t3lib/class.t3lib_userauthgroup.php']['getPagePermsClause'] as $_funcRef) {
					$_params = array('currentClause' => $str, 'perms' => $perms);
					$str = t3lib_div::callUserFunction($_funcRef, $_params, $this);
				}
			}

			return $str;
		} else {
			return ' 1=0';
		}
	}

	/**
	 * Returns a combined binary representation of the current users permissions for the page-record, $row.
	 * The perms for user, group and everybody is OR'ed together (provided that the page-owner is the user and for the groups that the user is a member of the group
	 * If the user is admin, 31 is returned	(full permissions for all five flags)
	 *
	 * @param	array		Input page row with all perms_* fields available.
	 * @return	integer		Bitwise representation of the users permissions in relation to input page row, $row
	 */
	function calcPerms($row)	{
		global $TYPO3_CONF_VARS;
		if ($this->isAdmin()) {return 31;}		// Return 31 for admin users.

		$out=0;
		if (isset($row['perms_userid']) && isset($row['perms_user']) && isset($row['perms_groupid']) && isset($row['perms_group']) && isset($row['perms_everybody']) && isset($this->groupList))	{
			if ($this->user['uid']==$row['perms_userid'])	{
				$out|=$row['perms_user'];
			}
			if ($this->isMemberOfGroup($row['perms_groupid']))	{
				$out|=$row['perms_group'];
			}
			$out|=$row['perms_everybody'];
		}

		// ****************
		// CALCPERMS hook
		// ****************
		if (is_array($TYPO3_CONF_VARS['SC_OPTIONS']['t3lib/class.t3lib_userauthgroup.php']['calcPerms'])) {
			foreach($TYPO3_CONF_VARS['SC_OPTIONS']['t3lib/class.t3lib_userauthgroup.php']['calcPerms'] as $_funcRef) {
				$_params = array(
					'row' => $row,
					'outputPermissions' => $out
				);
				$out = t3lib_div::callUserFunction($_funcRef, $_params, $this);
			}
		}

		return $out;
	}

	/**
	 * Returns true if the RTE (Rich Text Editor) can be enabled for the user
	 * Strictly this is not permissions being checked but rather a series of settings like a loaded extension, browser/client type and a configuration option in ->uc[edit_RTE]
	 * The reasons for a FALSE return can be found in $this->RTE_errors
	 *
	 * @return	boolean
	 */
	function isRTE()	{
		global $CLIENT;

			// Start:
		$this->RTE_errors = array();
		if (!$this->uc['edit_RTE'])
			$this->RTE_errors[] = 'RTE is not enabled for user!';
		if (!$GLOBALS['TYPO3_CONF_VARS']['BE']['RTEenabled'])
			$this->RTE_errors[] = 'RTE is not enabled in $TYPO3_CONF_VARS["BE"]["RTEenabled"]';


			// Acquire RTE object:
		$RTE = &t3lib_BEfunc::RTEgetObj();
		if (!is_object($RTE))	{
			$this->RTE_errors = array_merge($this->RTE_errors, $RTE);
		}

		if (!count($this->RTE_errors))	{
			return TRUE;
		} else {
			return FALSE;
		}
	}

	/**
	 * Returns true if the $value is found in the list in a $this->groupData[] index pointed to by $type (array key).
	 * Can thus be users to check for modules, exclude-fields, select/modify permissions for tables etc.
	 * If user is admin true is also returned
	 * Please see the document Inside TYPO3 for examples.
	 *
	 * @param	string		The type value; "webmounts", "filemounts", "pagetypes_select", "tables_select", "tables_modify", "non_exclude_fields", "modules"
	 * @param	string		String to search for in the groupData-list
	 * @return	boolean		True if permission is granted (that is, the value was found in the groupData list - or the BE_USER is "admin")
	 */
	function check($type,$value)	{
		if (isset($this->groupData[$type]))	{
			if ($this->isAdmin() || $this->inList($this->groupData[$type],$value)) {
				return 1;
			}
		}
	}

	/**
	 * Checking the authMode of a select field with authMode set
	 *
	 * @param	string		Table name
	 * @param	string		Field name (must be configured in TCA and of type "select" with authMode set!)
	 * @param	string		Value to evaluation (single value, must not contain any of the chars ":,|")
	 * @param	string		Auth mode keyword (explicitAllow, explicitDeny, individual)
	 * @return	boolean		True or false whether access is granted or not.
	 */
	function checkAuthMode($table,$field,$value,$authMode)	{
		global $TCA;

			// Admin users can do anything:
		if ($this->isAdmin())	return TRUE;

			// Allow all blank values:
		if (!strcmp($value,''))	return TRUE;

			// Certain characters are not allowed in the value
		if (ereg('[:|,]',$value))	{
			return FALSE;
		}

			// Initialize:
		$testValue = $table.':'.$field.':'.$value;
		$out = TRUE;

			// Checking value:
		switch((string)$authMode)	{
			case 'explicitAllow':
				if (!$this->inList($this->groupData['explicit_allowdeny'],$testValue.':ALLOW'))	{
					$out = FALSE;
				}
			break;
			case 'explicitDeny':
				if ($this->inList($this->groupData['explicit_allowdeny'],$testValue.':DENY'))	{
					$out = FALSE;
				}
			break;
			case 'individual':
				t3lib_div::loadTCA($table);
				if (is_array($TCA[$table]) && is_array($TCA[$table]['columns'][$field]))	{
					$items = $TCA[$table]['columns'][$field]['config']['items'];
					if (is_array($items))	{
						foreach($items as $iCfg)	{
							if (!strcmp($iCfg[1],$value) && $iCfg[4])	{
								switch((string)$iCfg[4])	{
									case 'EXPL_ALLOW':
										if (!$this->inList($this->groupData['explicit_allowdeny'],$testValue.':ALLOW'))	{
											$out = FALSE;
										}
									break;
									case 'EXPL_DENY':
										if ($this->inList($this->groupData['explicit_allowdeny'],$testValue.':DENY'))	{
											$out = FALSE;
										}
									break;
								}
								break;
							}
						}
					}
				}
			break;
		}

		return $out;
	}

	/**
	 * Checking if a language value (-1, 0 and >0 for sys_language records) is allowed to be edited by the user.
	 *
	 * @param	integer		Language value to evaluate
	 * @return	boolean		Returns true if the language value is allowed, otherwise false.
	 */
	function checkLanguageAccess($langValue)	{
		if (strcmp($this->groupData['allowed_languages'],''))	{	// The users language list must be non-blank - otherwise all languages are allowed.
			$langValue = intval($langValue);
			if ($langValue != -1 && !$this->check('allowed_languages',$langValue))	{	// Language must either be explicitly allowed OR the lang Value be "-1" (all languages)
				return FALSE;
			}
		}
		return TRUE;
	}

	/**
	 * Checking if a user has editing access to a record from a $TCA table.
	 * The checks does not take page permissions and other "environmental" things into account. It only deal with record internals; If any values in the record fields disallows it.
	 * For instance languages settings, authMode selector boxes are evaluated (and maybe more in the future).
	 * It will check for workspace dependent access.
	 * The function takes an ID (integer) or row (array) as second argument.
	 *
	 * @param	string		Table name
	 * @param	mixed		If integer, then this is the ID of the record. If Array this just represents fields in the record.
	 * @param	boolean		Set, if testing a new (non-existing) record array. Will disable certain checks that doesn't make much sense in that context.
	 * @return	boolean		True if OK, otherwise false
	 */
	function recordEditAccessInternals($table,$idOrRow,$newRecord=FALSE)	{
		global $TCA;

		if (isset($TCA[$table]))	{
			t3lib_div::loadTCA($table);

				// Always return true for Admin users.
			if ($this->isAdmin())	return TRUE;

				// Fetching the record if the $idOrRow variable was not an array on input:
			if (!is_array($idOrRow))	{
				$idOrRow = t3lib_BEfunc::getRecord($table, $idOrRow);
				if (!is_array($idOrRow))	{
					$this->errorMsg = 'ERROR: Record could not be fetched.';
					return FALSE;
				}
			}

				// Checking languages:
			if ($TCA[$table]['ctrl']['languageField'])	{
				if (isset($idOrRow[$TCA[$table]['ctrl']['languageField']]))	{	// Language field must be found in input row - otherwise it does not make sense.
					if (!$this->checkLanguageAccess($idOrRow[$TCA[$table]['ctrl']['languageField']]))	{
						$this->errorMsg = 'ERROR: Language was not allowed.';
						return FALSE;
					}
				} else {
					$this->errorMsg = 'ERROR: The "languageField" field named "'.$TCA[$table]['ctrl']['languageField'].'" was not found in testing record!';
					return FALSE;
				}
			}

				// Checking authMode fields:
			if (is_array($TCA[$table]['columns']))	{
				foreach($TCA[$table]['columns'] as $fN => $fV)	{
					if (isset($idOrRow[$fN]))	{	//
						if ($fV['config']['type']=='select' && $fV['config']['authMode'] && !strcmp($fV['config']['authMode_enforce'],'strict')) {
							if (!$this->checkAuthMode($table,$fN,$idOrRow[$fN],$fV['config']['authMode']))	{
								$this->errorMsg = 'ERROR: authMode "'.$fV['config']['authMode'].'" failed for field "'.$fN.'" with value "'.$idOrRow[$fN].'" evaluated';
								return FALSE;
							}
						}
					}
				}
			}

				// Checking "editlock" feature (doesn't apply to new records)
			if (!$newRecord && $TCA[$table]['ctrl']['editlock'])	{
				if (isset($idOrRow[$TCA[$table]['ctrl']['editlock']]))	{
					if ($idOrRow[$TCA[$table]['ctrl']['editlock']])	{
						$this->errorMsg = 'ERROR: Record was locked for editing. Only admin users can change this state.';
						return FALSE;
					}
				} else {
					$this->errorMsg = 'ERROR: The "editLock" field named "'.$TCA[$table]['ctrl']['editlock'].'" was not found in testing record!';
					return FALSE;
				}
			}

				// Checking record permissions
			// THIS is where we can include a check for "perms_" fields for other records than pages...

				// Finally, return true if all is well.
			return TRUE;
		}
	}

	/**
	 * Will check a type of permission against the compiled permission integer, $lCP, and in relation to table, $table
	 *
	 * @param	integer		$lCP could typically be the "compiled permissions" integer returned by ->calcPerms
	 * @param	string		$table is the tablename to check: If "pages" table then edit,new,delete and editcontent permissions can be checked. Other tables will be checked for "editcontent" only (and $type will be ignored)
	 * @param	string		For $table='pages' this can be 'edit' (2), 'new' (8 or 16), 'delete' (4), 'editcontent' (16). For all other tables this is ignored. (16 is used)
	 * @return	boolean
	 * @access private
	 */
	function isPSet($lCP,$table,$type='')	{
		if ($this->isAdmin())	return true;
		if ($table=='pages')	{
			if ($type=='edit')	return $lCP & 2;
			if ($type=='new')	return ($lCP & 8) || ($lCP & 16);	// Create new page OR pagecontent
			if ($type=='delete')	return $lCP & 4;
			if ($type=='editcontent')	return $lCP & 16;
		} else {
			return $lCP & 16;
		}
	}

	/**
	 * Returns true if the BE_USER is allowed to *create* shortcuts in the backend modules
	 *
	 * @return	boolean
	 */
	function mayMakeShortcut()	{
		return $this->getTSConfigVal('options.shortcutFrame') && !$this->getTSConfigVal('options.mayNotCreateEditShortcuts');
	}

	/**
	 * Checking if editing of an existing record is allowed in current workspace if that is offline.
	 * Rules for editing in offline mode:
	 * 		- record supports versioning and is an offline version from workspace and has the corrent stage
	 * 		- or record (any) is in a branch where there is a page which is a version from the workspace and where the stage is not preventing records
	 *
	 * @param	string		Table of record
	 * @param	array		Integer (record uid) or array where fields are at least: pid, t3ver_wsid, t3ver_stage (if versioningWS is set)
	 * @return	string		String error code, telling the failure state. FALSE=All ok
	 */
	function workspaceCannotEditRecord($table,$recData)	{

		if ($this->workspace!==0)	{	// Only test offline spaces:

			if (!is_array($recData))	{
				$recData = t3lib_BEfunc::getRecord($table,$recData,'pid'.($GLOBALS['TCA'][$table]['ctrl']['versioningWS']?',t3ver_wsid,t3ver_stage':''));
			}

			if (is_array($recData))	{
				if ((int)$recData['pid']===-1)	{	// We are testing a "version" (identified by a pid of -1): it can be edited provided that workspace matches and versioning is enabled for the table.
					if (!$GLOBALS['TCA'][$table]['ctrl']['versioningWS'])	{	// No versioning, basic error, inconsistency even! Such records should not have a pid of -1!
						return 'Versioning disabled for table';
					} elseif ((int)$recData['t3ver_wsid']!==$this->workspace)	{	// So does workspace match?
						return 'Workspace ID of record didn\'t match current workspace';
					} else {	// So what about the stage of the version, does that allow editing for this user?
						return $this->workspaceCheckStageForCurrent($recData['t3ver_stage']) ? FALSE : 'Record stage "'.$recData['t3ver_stage'].'" and users access level did not allow for editing';
					}
				} else {	// We are testing a "live" record:
					if ($res = $this->workspaceAllowLiveRecordsInPID($recData['pid'], $table)) { 	// For "Live" records, check that PID for table allows editing
							// Live records are OK in this branch, but what about the stage of branch point, if any:
						return $res>0 ? FALSE : 'Stage for versioning root point and users access level did not allow for editing';	// OK
					} else {	// If not offline and not in versionized branch, output error:
						return 'Online record was not in versionized branch!';
					}
				}
			} else return 'No record';
		} else {
			return FALSE; 	// OK because workspace is 0
		}
	}

	/**
	 * Evaluates if a user is allowed to edit the offline version
	 *
	 * @param	string		Table of record
	 * @param	array		Integer (record uid) or array where fields are at least: pid, t3ver_wsid, t3ver_stage (if versioningWS is set)
	 * @return	string		String error code, telling the failure state. FALSE=All ok
	 * @see workspaceCannotEditRecord()
	 */
	function workspaceCannotEditOfflineVersion($table,$recData)	{
		if ($GLOBALS['TCA'][$table]['ctrl']['versioningWS'])	{

			if (!is_array($recData))	{
				$recData = t3lib_BEfunc::getRecord($table,$recData,'uid,pid,t3ver_wsid,t3ver_stage');
			}
			if (is_array($recData))	{
				if ((int)$recData['pid']===-1)	{
					return $this->workspaceCannotEditRecord($table,$recData);
				} else return 'Not an offline version';
			} else return 'No record';
		} else return 'Table does not support versioning.';
	}

	/**
	 * Check if "live" records from $table may be created or edited in this PID.
	 * If the answer is FALSE it means the only valid way to create or edit records in the PID is by versioning
	 * If the answer is 1 or 2 it means it is OK to create a record, if -1 it means that it is OK in terms of versioning because the element was within a versionized branch but NOT ok in terms of the state the root point had!
	 *
	 * @param	integer		PID value to check for.
	 * @param	string		Table name
	 * @return	mixed		Returns FALSE if a live record cannot be created and must be versionized in order to do so. 2 means a) Workspace is "Live" or workspace allows "live edit" of records from non-versionized tables (and the $table is not versionizable). 1 and -1 means the pid is inside a versionized branch where -1 means that the branch-point did NOT allow a new record according to its state.
	 */
	function workspaceAllowLiveRecordsInPID($pid, $table)	{

			// Always for Live workspace AND if live-edit is enabled and tables are completely without versioning it is ok as well.
		if ($this->workspace===0 || ($this->workspaceRec['live_edit'] && !$GLOBALS['TCA'][$table]['ctrl']['versioningWS']))	{
			return 2;	// OK to create for this table.
		} elseif (t3lib_BEfunc::isPidInVersionizedBranch($pid, $table)) {	// Check if records from $table can be created with this PID: Either if inside "branch" versioning type or a "versioning_followPages" table on a "page" versioning type.
				// Now, check what the stage of that "page" or "branch" version type is:
			$stage = t3lib_BEfunc::isPidInVersionizedBranch($pid, $table, TRUE);
			return $this->workspaceCheckStageForCurrent($stage) ? 1 : -1;
		} else {
			return FALSE;	// If the answer is FALSE it means the only valid way to create or edit records in the PID is by versioning
		}
	}

	/**
	 * Evaluates if a record from $table can be created in $pid
	 *
	 * @param	integer		Page id. This value must be the _ORIG_uid if available: So when you have pages versionized as "page" or "element" you must supply the id of the page version in the workspace!
	 * @param	string		Table name
	 * @return	boolean		TRUE if OK.
	 */
	function workspaceCreateNewRecord($pid, $table)	{
		if ($res = $this->workspaceAllowLiveRecordsInPID($pid,$table))	{	// If LIVE records cannot be created in the current PID due to workspace restrictions, prepare creation of placeholder-record
			if ($res<0)	{
				return FALSE;	// Stage for versioning root point and users access level did not allow for editing
			}
		} elseif (!$GLOBALS['TCA'][$table]['ctrl']['versioningWS'])	{	// So, if no live records were allowed, we have to create a new version of this record:
			return FALSE;
		}
		return TRUE;
	}

	/**
	 * Evaluates if auto creation of a version of a record is allowed.
	 *
	 * @param	string		Table of the record
	 * @param	integer		UID of record
	 * @param	integer		PID of record
	 * @return	boolean		TRUE if ok.
	 */
	function workspaceAllowAutoCreation($table,$id,$recpid)	{
			// Auto-creation of version: In offline workspace, test if versioning is enabled and look for workspace version of input record. If there is no versionized record found we will create one and save to that.
		if ($this->workspace!==0	// Only in draft workspaces
			&& !$this->workspaceRec['disable_autocreate']	// Auto-creation must not be disabled.
			&& $GLOBALS['TCA'][$table]['ctrl']['versioningWS']	// Table must be versionizable
			&& $recpid >= 0	// The PID of the record must NOT be -1 or less (would indicate that it already was a version!)
			&& !t3lib_BEfunc::getWorkspaceVersionOfRecord($this->workspace, $table, $id, 'uid')	// There must be no existing version of this record in workspace.
			&& !t3lib_BEfunc::isPidInVersionizedBranch($recpid, $table))	{	// PID must NOT be in a versionized branch either
				return TRUE;
		}
	}

	/**
	 * Checks if an element stage allows access for the user in the current workspace
	 * In workspaces 0 (Live) and -1 (Default draft) access is always granted for any stage.
	 * Admins are always allowed.
	 *
	 * @param	integer		Stage id from an element: -1,0 = editing, 1 = reviewer, >1 = owner
	 * @return	boolean		TRUE if user is allowed access
	 */
	function workspaceCheckStageForCurrent($stage)	{
		if ($this->isAdmin())	return TRUE;

		if ($this->workspace>0)	{
			$stat = $this->checkWorkspaceCurrent();
			if (($stage<=0 && $stat['_ACCESS']==='member') ||
				($stage<=1 && $stat['_ACCESS']==='reviewer') ||
				($stat['_ACCESS']==='owner')) {
					return TRUE;	// OK for these criteria
			}
		} else return TRUE;	// Always OK for live and draft workspaces.
	}

	/**
	 * Returns TRUE if the user has access to publish content from the workspace ID given.
	 * Admin-users are always granted access to do this
	 * If the workspace ID is 0 (live) all users have access also
	 * If -1 (draft workspace) TRUE is returned if the user has access to the Live workspace
	 * For custom workspaces it depends on whether the user is owner OR like with draft workspace if the user has access to Live workspace.
	 *
	 * @param	integer		Workspace UID; -1,0,1+
	 * @return	boolean		Returns TRUE if the user has access to publish content from the workspace ID given.
	 */
	function workspacePublishAccess($wsid)	{
		if ($this->isAdmin())	return TRUE;

			// If no access to workspace, of course you cannot publish!
		$retVal = FALSE;

		$wsAccess = $this->checkWorkspace($wsid);
		if ($wsAccess)	{
			switch($wsAccess['uid'])	{
				case 0:		// Live workspace
					$retVal =  TRUE;	// If access to Live workspace, no problem.
				break;
				case -1:	// Default draft workspace
					$retVal =  $this->checkWorkspace(0) ? TRUE : FALSE;	// If access to Live workspace, no problem.
				break;
				default:	// Custom workspace
					$retVal =  $wsAccess['_ACCESS'] === 'owner' || ($this->checkWorkspace(0) && !($wsAccess['publish_access']&2));	// Either be an adminuser OR have access to online workspace which is OK as well as long as publishing access is not limited by workspace option.
				break;
			}
		}
		return $retVal;
	}

	/**
	 * Workspace swap-mode access?
	 *
	 * @return	boolean		Returns TRUE if records can be swapped in the current workspace, otherwise false
	 */
	function workspaceSwapAccess()	{
		if ($this->workspace>0 && (int)$this->workspaceRec['swap_modes']===2)	{
			return FALSE;
		} else return TRUE;
	}

	/**
	 * Workspace Versioning type access?
	 *
	 * @param	integer		Versioning type to evaluation: -1, 0, >1
	 * @return	boolean		TRUE if OK
	 */
	function workspaceVersioningTypeAccess($type)	{
		$retVal = FALSE;

		if ($this->workspace>0 && !$this->isAdmin())	{
			$stat = $this->checkWorkspaceCurrent();
			if ($stat['_ACCESS']!=='owner')	{

				$type = t3lib_div::intInRange($type,-1);
				switch((int)$type)	{
					case -1:
						$retVal = $this->workspaceRec['vtypes']&1 ? FALSE : TRUE;
					break;
					case 0:
						$retVal = $this->workspaceRec['vtypes']&2 ? FALSE : TRUE;
					break;
					default:
						$retVal = $this->workspaceRec['vtypes']&4 ? FALSE : TRUE;
					break;
				}
			} else $retVal = TRUE;
		} else $retVal = TRUE;

		return $retVal;
	}

	/**
	 * Finding "closest" versioning type, used for creation of new records.
	 *
	 * @param	integer		Versioning type to evaluation: -1, 0, >1
	 * @return	integer		Returning versioning type
	 */
	function workspaceVersioningTypeGetClosest($type)	{
		$type = t3lib_div::intInRange($type,-1);

		if ($this->workspace>0)	{
			switch((int)$type)	{
				case -1:
					$type = -1;
				break;
				case 0:
					$type = $this->workspaceVersioningTypeAccess($type) ? $type : -1;
				break;
				default:
					$type = $this->workspaceVersioningTypeAccess($type) ? $type : ($this->workspaceVersioningTypeAccess(0) ? 0 : -1);
				break;
			}
		}
		return $type;
	}










	/*************************************
	 *
	 * Miscellaneous functions
	 *
	 *************************************/

	/**
	 * Returns the value/properties of a TS-object as given by $objectString, eg. 'options.dontMountAdminMounts'
	 * Nice (general!) function for returning a part of a TypoScript array!
	 *
	 * @param	string		Pointer to an "object" in the TypoScript array, fx. 'options.dontMountAdminMounts'
	 * @param	array		Optional TSconfig array: If array, then this is used and not $this->userTS. If not array, $this->userTS is used.
	 * @return	array		An array with two keys, "value" and "properties" where "value" is a string with the value of the objectsting and "properties" is an array with the properties of the objectstring.
	 * @params	array	An array with the TypoScript where the $objectString is located. If this argument is not an array, then internal ->userTS (User TSconfig for the current BE_USER) will be used instead.
	 */
	function getTSConfig($objectString,$config='')	{
		if (!is_array($config))	{
			$config=$this->userTS;	// Getting Root-ts if not sent
		}
		$TSConf=array();
		$parts = explode('.',$objectString,2);
		$key = $parts[0];
		if (trim($key))	{
			if (count($parts)>1 && trim($parts[1]))	{
				// Go on, get the next level
				if (is_array($config[$key.'.']))	$TSConf = $this->getTSConfig($parts[1],$config[$key.'.']);
			} else {
				$TSConf['value']=$config[$key];
				$TSConf['properties']=$config[$key.'.'];
			}
		}
		return $TSConf;
	}

	/**
	 * Returns the "value" of the $objectString from the BE_USERS "User TSconfig" array
	 *
	 * @param	string		Object string, eg. "somestring.someproperty.somesubproperty"
	 * @return	string		The value for that object string (object path)
	 * @see	getTSConfig()
	 */
	function getTSConfigVal($objectString)	{
		$TSConf = $this->getTSConfig($objectString);
		return $TSConf['value'];
	}

	/**
	 * Returns the "properties" of the $objectString from the BE_USERS "User TSconfig" array
	 *
	 * @param	string		Object string, eg. "somestring.someproperty.somesubproperty"
	 * @return	array		The properties for that object string (object path) - if any
	 * @see	getTSConfig()
	 */
	function getTSConfigProp($objectString)	{
		$TSConf = $this->getTSConfig($objectString);
		return $TSConf['properties'];
	}

	/**
	 * Returns true if $item is in $in_list
	 *
	 * @param	string		Comma list with items, no spaces between items!
	 * @param	string		The string to find in the list of items
	 * @return	string		Boolean
	 */
	function inList($in_list,$item)	{
		return strstr(','.$in_list.',', ','.$item.',');
	}

	/**
	 * Returns an array with the webmounts.
	 * If no webmounts, and empty array is returned.
	 * NOTICE: Deleted pages WILL NOT be filtered out! So if a mounted page has been deleted it is STILL coming out as a webmount. This is not checked due to performance.
	 *
	 * @return	array
	 */
	function returnWebmounts()	{
		return (string)($this->groupData['webmounts'])!='' ? explode(',',$this->groupData['webmounts']) : Array();
	}

	/**
	 * Returns an array with the filemounts for the user. Each filemount is represented with an array of a "name", "path" and "type".
	 * If no filemounts an empty array is returned.
	 *
	 * @return	array
	 */
	function returnFilemounts()	{
		return $this->groupData['filemounts'];
	}

	/**
	 * Returns true or false, depending if an alert popup (a javascript confirmation) should be shown
	 * call like $GLOBALS['BE_USER']->jsConfirmation($BITMASK)
	 *
	 *    1 - typeChange
	 *    2 - copy/move/paste
	 *    4 - delete
	 *    8 - frontend editing
	 *    128 - other (not used yet)
	 *
	 * @param	integer   Bitmask
	 * @return	boolean		true if the confirmation should be shown
	 */
	 function jsConfirmation($bitmask)	{
		 $alertPopup = $GLOBALS['BE_USER']->getTSConfig('options.alertPopups');
		 if (empty($alertPopup['value']))	{
			 $alertPopup = 255;	// default: show all warnings
		 } else {
			 $alertPopup = (int)$alertPopup['value'];
		 }
		 if(($alertPopup&$bitmask) == $bitmask)	{ // show confirmation
			 return 1;
		 } else { // don't show confirmation
			 return 0;
		 }
	 }









	/*************************************
	 *
	 * Authentication methods
	 *
	 *************************************/


	/**
	 * Initializes a lot of stuff like the access-lists, database-mountpoints and filemountpoints
	 * This method is called by ->backendCheckLogin() (from extending class t3lib_beuserauth) if the backend user login has verified OK.
	 * Generally this is required initialization of a backend user.
	 *
	 * @return	void
	 * @access private
	 * @see t3lib_TSparser
	 */
	function fetchGroupData()	{
		if ($this->user['uid'])	{

				// Get lists for the be_user record and set them as default/primary values.
			$this->dataLists['modList'] = $this->user['userMods'];					// Enabled Backend Modules
			$this->dataLists['allowed_languages'] = $this->user['allowed_languages'];					// Add Allowed Languages
			$this->dataLists['workspace_perms'] = $this->user['workspace_perms'];					// Set user value for workspace permissions.
			$this->dataLists['webmount_list'] = $this->user['db_mountpoints'];		// Database mountpoints
			$this->dataLists['filemount_list'] = $this->user['file_mountpoints'];	// File mountpoints

				// Setting default User TSconfig:
			$this->TSdataArray[]=$this->addTScomment('From $GLOBALS["TYPO3_CONF_VARS"]["BE"]["defaultUserTSconfig"]:').
									$GLOBALS['TYPO3_CONF_VARS']['BE']['defaultUserTSconfig'];

				// Default TSconfig for admin-users
			if ($this->isAdmin())	{
				$this->TSdataArray[]=$this->addTScomment('"admin" user presets:').'
					admPanel.enable.all = 1
					options.shortcutFrame = 1
				';
				if (t3lib_extMgm::isLoaded('sys_note'))	{
					$this->TSdataArray[]='
						// Setting defaults for sys_note author / email...
						TCAdefaults.sys_note.author = '.$this->user['realName'].'
						TCAdefaults.sys_note.email = '.$this->user['email'].'
					';
				}
			}

				// FILE MOUNTS:
				// Admin users has the base fileadmin dir mounted
			if ($this->isAdmin() && $GLOBALS['TYPO3_CONF_VARS']['BE']['fileadminDir'])	{
				$this->addFileMount($GLOBALS['TYPO3_CONF_VARS']['BE']['fileadminDir'], '', PATH_site.$GLOBALS['TYPO3_CONF_VARS']['BE']['fileadminDir'], 0, '');
			}

				// If userHomePath is set, we attempt to mount it
			if ($GLOBALS['TYPO3_CONF_VARS']['BE']['userHomePath'])	{
					// First try and mount with [uid]_[username]
				$didMount=$this->addFileMount($this->user['username'], '',$GLOBALS['TYPO3_CONF_VARS']['BE']['userHomePath'].$this->user['uid'].'_'.$this->user['username'].$GLOBALS['TYPO3_CONF_VARS']['BE']['userUploadDir'], 0, 'user');
				if (!$didMount)	{
						// If that failed, try and mount with only [uid]
					$this->addFileMount($this->user['username'], '', $GLOBALS['TYPO3_CONF_VARS']['BE']['userHomePath'].$this->user['uid'].$GLOBALS['TYPO3_CONF_VARS']['BE']['userUploadDir'], 0, 'user');
				}
			}

				// BE_GROUPS:
				// Get the groups...
#			$grList = t3lib_BEfunc::getSQLselectableList($this->user[$this->usergroup_column],$this->usergroup_table,$this->usergroup_table);
			$grList = $GLOBALS['TYPO3_DB']->cleanIntList($this->user[$this->usergroup_column]);	// 240203: Since the group-field never contains any references to groups with a prepended table name we think it's safe to just intExplode and re-implode - which should be much faster than the other function call.
			if ($grList)	{
					// Fetch groups will add a lot of information to the internal arrays: modules, accesslists, TSconfig etc. Refer to fetchGroups() function.
				$this->fetchGroups($grList);
			}

				// Add the TSconfig for this specific user:
			$this->TSdataArray[] = $this->addTScomment('USER TSconfig field').$this->user['TSconfig'];
				// Check include lines.
			$this->TSdataArray = t3lib_TSparser::checkIncludeLines_array($this->TSdataArray);

				// Parsing the user TSconfig (or getting from cache)
			$this->userTS_text = implode(chr(10).'[GLOBAL]'.chr(10),$this->TSdataArray);	// Imploding with "[global]" will make sure that non-ended confinements with braces are ignored.
			$hash = md5('userTS:'.$this->userTS_text);
			$cachedContent = t3lib_BEfunc::getHash($hash,0);
			if (isset($cachedContent) && !$this->userTS_dontGetCached)	{
				$this->userTS = unserialize($cachedContent);
			} else {
				$parseObj = t3lib_div::makeInstance('t3lib_TSparser');
				$parseObj->parse($this->userTS_text);
				$this->userTS = $parseObj->setup;
				t3lib_BEfunc::storeHash($hash,serialize($this->userTS),'BE_USER_TSconfig');
					// Update UC:
				$this->userTSUpdated=1;
			}

				// Processing webmounts
			if ($this->isAdmin() && !$this->getTSConfigVal('options.dontMountAdminMounts'))	{	// Admin's always have the root mounted
				$this->dataLists['webmount_list']='0,'.$this->dataLists['webmount_list'];
			}

				// Processing filemounts
			$this->dataLists['filemount_list'] = t3lib_div::uniqueList($this->dataLists['filemount_list']);
			if ($this->dataLists['filemount_list'])	{
				$res = $GLOBALS['TYPO3_DB']->exec_SELECTquery('*', 'sys_filemounts', 'deleted=0 AND hidden=0 AND pid=0 AND uid IN ('.$this->dataLists['filemount_list'].')');
				while ($row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res))	{
					$this->addFileMount($row['title'], $row['path'], $row['path'], $row['base']?1:0, '');
				}
			}

				// The lists are cleaned for duplicates
			$this->groupData['webmounts'] = t3lib_div::uniqueList($this->dataLists['webmount_list']);
			$this->groupData['pagetypes_select'] = t3lib_div::uniqueList($this->dataLists['pagetypes_select']);
			$this->groupData['tables_select'] = t3lib_div::uniqueList($this->dataLists['tables_modify'].','.$this->dataLists['tables_select']);
			$this->groupData['tables_modify'] = t3lib_div::uniqueList($this->dataLists['tables_modify']);
			$this->groupData['non_exclude_fields'] = t3lib_div::uniqueList($this->dataLists['non_exclude_fields']);
			$this->groupData['explicit_allowdeny'] = t3lib_div::uniqueList($this->dataLists['explicit_allowdeny']);
			$this->groupData['allowed_languages'] = t3lib_div::uniqueList($this->dataLists['allowed_languages']);
			$this->groupData['custom_options'] = t3lib_div::uniqueList($this->dataLists['custom_options']);
			$this->groupData['modules'] = t3lib_div::uniqueList($this->dataLists['modList']);
			$this->groupData['workspace_perms'] = $this->dataLists['workspace_perms'];

				// populating the $this->userGroupsUID -array with the groups in the order in which they were LAST included.!!
			$this->userGroupsUID = array_reverse(array_unique(array_reverse($this->includeGroupArray)));

				// Finally this is the list of group_uid's in the order they are parsed (including subgroups!) and without duplicates (duplicates are presented with their last entrance in the list, which thus reflects the order of the TypoScript in TSconfig)
			$this->groupList = implode(',',$this->userGroupsUID);
			$this->setCachedList($this->groupList);

				// Checking read access to webmounts:
			if (trim($this->groupData['webmounts'])!=='')	{
				$webmounts = explode(',',$this->groupData['webmounts']);	// Explode mounts
				$MProws = $GLOBALS['TYPO3_DB']->exec_SELECTgetRows('uid', 'pages', 'deleted=0 AND uid IN ('.$this->groupData['webmounts'].') AND '.$this->getPagePermsClause(1),'','','','uid');	// Selecting all webmounts with permission clause for reading
				foreach($webmounts as $idx => $mountPointUid)	{
					if ($mountPointUid>0 && !isset($MProws[$mountPointUid]))	{	// If the mount ID is NOT found among selected pages, unset it:
						unset($webmounts[$idx]);
					}
				}
				$this->groupData['webmounts'] = implode(',',$webmounts);	// Implode mounts in the end.
			}

				// Setting up workspace situation (after webmounts are processed!):
			$this->workspaceInit();
		}
	}

	/**
	 * Fetches the group records, subgroups and fills internal arrays.
	 * Function is called recursively to fetch subgroups
	 *
	 * @param	string		Commalist of be_groups uid numbers
	 * @param	string		List of already processed be_groups-uids so the function will not fall into a eternal recursion.
	 * @return	void
	 * @access private
	 */
	function fetchGroups($grList,$idList='')	{
		global $TYPO3_CONF_VARS;

			// Fetching records of the groups in $grList (which are not blocked by lockedToDomain either):
		$lockToDomain_SQL = ' AND (lockToDomain=\'\' OR lockToDomain IS NULL OR lockToDomain=\''.t3lib_div::getIndpEnv('HTTP_HOST').'\')';
		$whereSQL = 'deleted=0 AND hidden=0 AND pid=0 AND uid IN ('.$grList.')'.$lockToDomain_SQL;

			// Hook for manipulation of the WHERE sql sentence which controls which BE-groups are included
		if (is_array ($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_userauthgroup.php']['fetchGroupQuery'])) {
		    foreach ($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_userauthgroup.php']['fetchGroupQuery'] as $classRef) {
			$hookObj = &t3lib_div::getUserObj($classRef);
			if(method_exists($hookObj,'fetchGroupQuery_processQuery')){
			    $whereSQL = $hookObj->fetchGroupQuery_processQuery($this, $grList, $idList, $whereSQL);
			}
		    }
		}

		$res = $GLOBALS['TYPO3_DB']->exec_SELECTquery('*', $this->usergroup_table, $whereSQL);

			// The userGroups array is filled
		while ($row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res))	{
			$this->userGroups[$row['uid']] = $row;
		}

			// Traversing records in the correct order
		$include_staticArr = t3lib_div::intExplode(',',$grList);
		reset($include_staticArr);
		while(list(,$uid)=each($include_staticArr))	{	// traversing list

				// Get row:
			$row=$this->userGroups[$uid];
			if (is_array($row) && !t3lib_div::inList($idList,$uid))	{	// Must be an array and $uid should not be in the idList, because then it is somewhere previously in the grouplist

					// Include sub groups
				if (trim($row['subgroup']))	{
					$theList = implode(',',t3lib_div::intExplode(',',$row['subgroup']));	// Make integer list
					$this->fetchGroups($theList, $idList.','.$uid);		// Call recursively, pass along list of already processed groups so they are not recursed again.
				}
					// Add the group uid, current list, TSconfig to the internal arrays.
				$this->includeGroupArray[]=$uid;
				$this->includeHierarchy[]=$idList;
				$this->TSdataArray[] = $this->addTScomment('Group "'.$row['title'].'" ['.$row['uid'].'] TSconfig field:').$row['TSconfig'];

					// Mount group database-mounts
				if (($this->user['options']&1) == 1)	{	$this->dataLists['webmount_list'].= ','.$row['db_mountpoints'];	}

					// Mount group file-mounts
				if (($this->user['options']&2) == 2)	{	$this->dataLists['filemount_list'].= ','.$row['file_mountpoints'];	}

					// Mount group home-dirs
				if (($this->user['options']&2) == 2)	{
						// If groupHomePath is set, we attempt to mount it
					if ($GLOBALS['TYPO3_CONF_VARS']['BE']['groupHomePath'])	{
						$this->addFileMount($row['title'], '', $GLOBALS['TYPO3_CONF_VARS']['BE']['groupHomePath'].$row['uid'], 0, 'group');
					}
				}

					// The lists are made: groupMods, tables_select, tables_modify, pagetypes_select, non_exclude_fields, explicit_allowdeny, allowed_languages, custom_options
				if ($row['inc_access_lists']==1)	{
					$this->dataLists['modList'].= ','.$row['groupMods'];
					$this->dataLists['tables_select'].= ','.$row['tables_select'];
					$this->dataLists['tables_modify'].= ','.$row['tables_modify'];
					$this->dataLists['pagetypes_select'].= ','.$row['pagetypes_select'];
					$this->dataLists['non_exclude_fields'].= ','.$row['non_exclude_fields'];
					$this->dataLists['explicit_allowdeny'].= ','.$row['explicit_allowdeny'];
					$this->dataLists['allowed_languages'].= ','.$row['allowed_languages'];
					$this->dataLists['custom_options'].= ','.$row['custom_options'];
				}

					// Setting workspace permissions:
				$this->dataLists['workspace_perms'] |= $row['workspace_perms'];

					// If this function is processing the users OWN group-list (not subgroups) AND if the ->firstMainGroup is not set, then the ->firstMainGroup will be set.
				if (!strcmp($idList,'') && !$this->firstMainGroup)	{
					$this->firstMainGroup=$uid;
				}
			}
		}

		// ****************
		// HOOK: fetchGroups_postProcessing
		// ****************
		if (is_array($TYPO3_CONF_VARS['SC_OPTIONS']['t3lib/class.t3lib_userauthgroup.php']['fetchGroups_postProcessing'])) {
			foreach($TYPO3_CONF_VARS['SC_OPTIONS']['t3lib/class.t3lib_userauthgroup.php']['fetchGroups_postProcessing'] as $_funcRef) {
				$_params = array();
				t3lib_div::callUserFunction($_funcRef, $_params, $this);
			}
		}
	}

	/**
	 * Updates the field be_users.usergroup_cached_list if the groupList of the user has changed/is different from the current list.
	 * The field "usergroup_cached_list" contains the list of groups which the user is a member of. After authentication (where these functions are called...) one can depend on this list being a representation of the exact groups/subgroups which the BE_USER has membership with.
	 *
	 * @param	string		The newly compiled group-list which must be compared with the current list in the user record and possibly stored if a difference is detected.
	 * @return	void
	 * @access private
	 */
	function setCachedList($cList)	{
		if ((string)$cList != (string)$this->user['usergroup_cached_list'])	{
			$GLOBALS['TYPO3_DB']->exec_UPDATEquery('be_users', 'uid='.intval($this->user['uid']), array('usergroup_cached_list' => $cList));
		}
	}

	/**
	 * Adds a filemount to the users array of filemounts, $this->groupData['filemounts'][hash_key] = Array ('name'=>$name, 'path'=>$path, 'type'=>$type);
	 * Is a part of the authentication proces of the user.
	 * A final requirement for a path being mounted is that a) it MUST return true on is_dir(), b) must contain either PATH_site+'fileadminDir' OR 'lockRootPath' - if lockRootPath is set - as first part of string!
	 * Paths in the mounted information will always be absolute and have a trailing slash.
	 *
	 * @param	string		$title will be the (root)name of the filemount in the folder tree
	 * @param	string		$altTitle will be the (root)name of the filemount IF $title is not true (blank or zero)
	 * @param	string		$path is the path which should be mounted. Will accept backslash in paths on windows servers (will substituted with forward slash). The path should be 1) relative to TYPO3_CONF_VARS[BE][fileadminDir] if $webspace is set, otherwise absolute.
	 * @param	boolean		If $webspace is set, the $path is relative to 'fileadminDir' in TYPO3_CONF_VARS, otherwise $path is absolute. 'fileadminDir' must be set to allow mounting of relative paths.
	 * @param	string		Type of filemount; Can be blank (regular) or "user" / "group" (for user and group filemounts presumably). Probably sets the icon first and foremost.
	 * @return	boolean		Returns "1" if the requested filemount was mounted, otherwise no return value.
	 * @access private
	 */
	function addFileMount($title, $altTitle, $path, $webspace, $type)	{
			// Return false if fileadminDir is not set and we try to mount a relative path
		if ($webspace && !$GLOBALS['TYPO3_CONF_VARS']['BE']['fileadminDir'])	return false;

			// Trimming and pre-processing
		$path=trim($path);
		if ($this->OS=='WIN')	{		// with WINDOWS convert backslash to slash!!
			$path=str_replace('\\','/',$path);
		}
			// If the path is true and validates as a valid path string:
		if ($path && t3lib_div::validPathStr($path))	{
				// normalize path: remove leading '/' and './', and trailing '/' and '/.'
			$path=trim($path);
			$path=preg_replace('#^\.?/|/\.?$#','',$path);

			if ($path)	{	// there must be some chars in the path
				$fdir=PATH_site.$GLOBALS['TYPO3_CONF_VARS']['BE']['fileadminDir'];	// fileadmin dir, absolute
				if ($webspace)	{
					$path=$fdir.$path;	// PATH_site + fileadmin dir is prepended
				} else {
					if ($this->OS!='WIN')	{		// with WINDOWS no prepending!!
						$path='/'.$path;	// root-level is the start...
					}
				}
				$path.='/';

					// We now have a path with slash after and slash before (if unix)
				if (@is_dir($path) &&
					(($GLOBALS['TYPO3_CONF_VARS']['BE']['lockRootPath'] && t3lib_div::isFirstPartOfStr($path,$GLOBALS['TYPO3_CONF_VARS']['BE']['lockRootPath'])) || t3lib_div::isFirstPartOfStr($path,$fdir)))	{
							// Alternative title?
						$name = $title ? $title : $altTitle;
							// Adds the filemount. The same filemount with same name, type and path cannot be set up twice because of the hash string used as key.
						$this->groupData['filemounts'][md5($name.'|'.$path.'|'.$type)] = Array('name'=>$name, 'path'=>$path, 'type'=>$type);
							// Return true - went well, success!
						return 1;
				}
			}
		}
	}

	/**
	 * Creates a TypoScript comment with the string text inside.
	 *
	 * @param	string		The text to wrap in comment prefixes and delimiters.
	 * @return	string		TypoScript comment with the string text inside.
	 */
	function addTScomment($str)	{
		$delimiter = '# ***********************************************';

		$out = $delimiter.chr(10);
		$lines = t3lib_div::trimExplode(chr(10),$str);
		foreach($lines as $v)	{
			$out.= '# '.$v.chr(10);
		}
		$out.= $delimiter.chr(10);
		return $out;
	}












	/************************************
	 *
	 * Workspaces
	 *
	 ************************************/

	/**
	 * Initializing workspace.
	 * Called from within this function, see fetchGroupData()
	 *
	 * @return	void
	 * @see fetchGroupData()
	 */
	function workspaceInit()	{

			// Initializing workspace by evaluating and setting the workspace, possibly updating it in the user record!
		$this->setWorkspace($this->user['workspace_id']);

			// Setting up the db mount points of the (custom) workspace, if any:
		if ($this->workspace>0 && trim($this->workspaceRec['db_mountpoints'])!=='')	{

				// Initialize:
			$newMounts = array();
			$readPerms = '1=1'; // Notice: We cannot call $this->getPagePermsClause(1); as usual because the group-list is not available at this point. But bypassing is fine because all we want here is check if the workspace mounts are inside the current webmounts rootline. The actual permission checking on page level is done elsewhere as usual anyway before the page tree is rendered.

				// Traverse mount points of the
			$mountPoints = t3lib_div::intExplode(',',$this->workspaceRec['db_mountpoints']);
			foreach($mountPoints as $mpId)	{
				if ($this->isInWebMount($mpId,$readPerms))	{
					$newMounts[] = $mpId;
				}
			}

				// Re-insert webmounts:
			$this->groupData['webmounts'] = implode(',',array_unique($newMounts));
		}

			// Setting up the file mount points of the (custom) workspace, if any:
		if ($this->workspace!==0)	$this->groupData['filemounts'] = array();
		if ($this->workspace>0 && trim($this->workspaceRec['file_mountpoints'])!=='')	{

				// Processing filemounts
			$res = $GLOBALS['TYPO3_DB']->exec_SELECTquery('*', 'sys_filemounts', 'deleted=0 AND hidden=0 AND pid=0 AND uid IN ('.$GLOBALS['TYPO3_DB']->cleanIntList($this->workspaceRec['file_mountpoints']).')');
			while ($row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res))	{
				$this->addFileMount($row['title'], $row['path'], $row['path'], $row['base']?1:0, '');
			}
		}
	}

	/**
	 * Checking if a workspace is allowed for backend user
	 *
	 * @param	mixed		If integer, workspace record is looked up, if array it is seen as a Workspace record with at least uid, title, members and adminusers columns. Can be faked for workspaces uid 0 and -1 (online and offline)
	 * @param	string		List of fields to select. Default fields are: uid,title,adminusers,members,reviewers,publish_access,stagechg_notification
	 * @return	array		TRUE if access. Output will also show how access was granted. Admin users will have a true output regardless of input.
	 */
	function checkWorkspace($wsRec,$fields='uid,title,adminusers,members,reviewers,publish_access,stagechg_notification')	{
		$retVal = FALSE;

			// If not array, look up workspace record:
		if (!is_array($wsRec))	{
			switch((string)$wsRec)	{
				case '0':
				case '-1':
					$wsRec = array('uid' => $wsRec);
				break;
				default:
					list($wsRec) = $GLOBALS['TYPO3_DB']->exec_SELECTgetRows(
						$fields,
						'sys_workspace',
						'pid=0 AND uid='.intval($wsRec).
							t3lib_BEfunc::deleteClause('sys_workspace'),
						'',
						'title'
					);
				break;
			}
		}

			// If wsRec is set to an array, evaluate it:
		if (is_array($wsRec))	{
			if ($this->isAdmin())	{
				return array_merge($wsRec,array('_ACCESS' => 'admin'));
			} else {

				switch((string)$wsRec['uid'])	{
					case '0':
						$retVal = ($this->groupData['workspace_perms']&1) ? array_merge($wsRec,array('_ACCESS' => 'online')) : FALSE;
					break;
					case '-1':
						$retVal = ($this->groupData['workspace_perms']&2) ? array_merge($wsRec,array('_ACCESS' => 'offline')) : FALSE;
					break;
					default:
							// Checking if the guy is admin:
						if (t3lib_div::inList($wsRec['adminusers'],$this->user['uid']))	{
							return array_merge($wsRec, array('_ACCESS' => 'owner'));
						}
							// Checking if he is reviewer user:
						if (t3lib_div::inList($wsRec['reviewers'],'be_users_'.$this->user['uid']))	{
							return array_merge($wsRec, array('_ACCESS' => 'reviewer'));
						}
							// Checking if he is reviewer through a user group of his:
						foreach($this->userGroupsUID as $groupUid)	{
							if (t3lib_div::inList($wsRec['reviewers'],'be_groups_'.$groupUid))	{
								return array_merge($wsRec, array('_ACCESS' => 'reviewer'));
							}
						}
							// Checking if he is member as user:
						if (t3lib_div::inList($wsRec['members'],'be_users_'.$this->user['uid']))	{
							return array_merge($wsRec, array('_ACCESS' => 'member'));
						}
							// Checking if he is member through a user group of his:
						foreach($this->userGroupsUID as $groupUid)	{
							if (t3lib_div::inList($wsRec['members'],'be_groups_'.$groupUid))	{
								return array_merge($wsRec, array('_ACCESS' => 'member'));
							}
						}
					break;
				}
			}
		}

		return $retVal;
	}

	/**
	 * Uses checkWorkspace() to check if current workspace is available for user. This function caches the result and so can be called many times with no performance loss.
	 *
	 * @return	array		See checkWorkspace()
	 * @see checkWorkspace()
	 */
	function checkWorkspaceCurrent()	{
		if (!isset($this->checkWorkspaceCurrent_cache))	{
			$this->checkWorkspaceCurrent_cache = $this->checkWorkspace($this->workspace);
		}
		return $this->checkWorkspaceCurrent_cache;
	}

	/**
	 * Setting workspace ID
	 *
	 * @param	integer		ID of workspace to set for backend user. If not valid the default workspace for BE user is found and set.
	 * @return	void
	 */
	function setWorkspace($workspaceId)	{

			// Check workspace validity and if not found, revert to default workspace.
		if ($this->workspaceRec = $this->checkWorkspace($workspaceId,'*'))	{
				// Set workspace ID internally
			$this->workspace = (int)$workspaceId;
		} else {
			$this->workspace = (int)$this->getDefaultWorkspace();
			$this->workspaceRec = $this->checkWorkspace($this->workspace,'*');
		}

			// Unset access cache:
		unset($this->checkWorkspaceCurrent_cache);

			// If ID is different from the stored one, change it:
		if (strcmp($this->workspace, $this->user['workspace_id']))	{
			$this->user['workspace_id'] = $this->workspace;
			$GLOBALS['TYPO3_DB']->exec_UPDATEquery('be_users','uid='.intval($this->user['uid']),array('workspace_id' => $this->user['workspace_id']));
			$this->simplelog('User changed workspace to "'.$this->workspace.'"');
		}
	}

	/**
	 * Setting workspace preview state for user:
	 *
	 * @param	boolean		State of user preview.
	 * @return	void
	 */
	function setWorkspacePreview($previewState)	{
		$this->user['workspace_preview'] = $previewState;
		$GLOBALS['TYPO3_DB']->exec_UPDATEquery('be_users','uid='.intval($this->user['uid']),array('workspace_preview' => $this->user['workspace_preview']));
	}

	/**
	 * Return default workspace ID for user
	 *
	 * @return	integer		Default workspace id. If no workspace is available it will be "-99"
	 */
	function getDefaultWorkspace()	{

		if ($this->checkWorkspace(0))	{	// Check online
			return 0;
		} elseif ($this->checkWorkspace(-1))	{	// Check offline
			return -1;
		} else {	// Traverse custom workspaces:
			$workspaces = $GLOBALS['TYPO3_DB']->exec_SELECTgetRows('uid,title,adminusers,members,reviewers','sys_workspace','pid=0'.t3lib_BEfunc::deleteClause('sys_workspace'),'','title');
			foreach($workspaces as $rec)	{
				if ($this->checkWorkspace($rec))	{
					return $rec['uid'];
				}
			}
		}
		return -99;
	}











	/************************************
	 *
	 * Logging
	 *
	 ************************************/

	/**
	 * Writes an entry in the logfile/table
	 * Documentation in "TYPO3 Core API"
	 *
	 * @param	integer		Denotes which module that has submitted the entry. See "TYPO3 Core API". Use "4" for extensions.
	 * @param	integer		Denotes which specific operation that wrote the entry. Use "0" when no sub-categorizing applies
	 * @param	integer		Flag. 0 = message, 1 = error (user problem), 2 = System Error (which should not happen), 3 = security notice (admin)
	 * @param	integer		The message number. Specific for each $type and $action. This will make it possible to translate errormessages to other languages
	 * @param	string		Default text that follows the message (in english!). Possibly translated by identification through type/action/details_nr
	 * @param	array		Data that follows the log. Might be used to carry special information. If an array the first 5 entries (0-4) will be sprintf'ed with the details-text
	 * @param	string		Table name. Special field used by tce_main.php.
	 * @param	integer		Record UID. Special field used by tce_main.php.
	 * @param	integer		Record PID. Special field used by tce_main.php. OBSOLETE
	 * @param	integer		The page_uid (pid) where the event occurred. Used to select log-content for specific pages.
	 * @param	string		Special field used by tce_main.php. NEWid string of newly created records.
	 * @param	integer		Alternative Backend User ID (used for logging login actions where this is not yet known).
	 * @return	integer		Log entry ID.
	 */
	function writelog($type,$action,$error,$details_nr,$details,$data,$tablename='',$recuid='',$recpid='',$event_pid=-1,$NEWid='',$userId=0) {

		$fields_values = Array (
			'userid' => $userId ? $userId : intval($this->user['uid']),
			'type' => intval($type),
			'action' => intval($action),
			'error' => intval($error),
			'details_nr' => intval($details_nr),
			'details' => $details,
			'log_data' => serialize($data),
			'tablename' => $tablename,
			'recuid' => intval($recuid),
#			'recpid' => intval($recpid),
			'IP' => t3lib_div::getIndpEnv('REMOTE_ADDR'),
			'tstamp' => $GLOBALS['EXEC_TIME'],
			'event_pid' => intval($event_pid),
			'NEWid' => $NEWid,
			'workspace' => $this->workspace
		);

		$GLOBALS['TYPO3_DB']->exec_INSERTquery('sys_log', $fields_values);
		return $GLOBALS['TYPO3_DB']->sql_insert_id();
	}

	/**
	 * Simple logging function
	 *
	 * @param	string		Log message
	 * @param	string		Option extension key / module name
	 * @param	integer		Error level. 0 = message, 1 = error (user problem), 2 = System Error (which should not happen), 3 = security notice (admin)
	 * @return	integer		Log entry UID
	 */
	function simplelog($message, $extKey='', $error=0)	{
		return $this->writelog(
			4,
			0,
			$error,
			0,
			($extKey?'['.$extKey.'] ':'').$message,
			array()
		);
	}

	/**
	 * Sends a warning to $email if there has been a certain amount of failed logins during a period.
	 * If a login fails, this function is called. It will look up the sys_log to see if there has been more than $max failed logins the last $secondsBack seconds (default 3600). If so, an email with a warning is sent to $email.
	 *
	 * @param	string		Email address
	 * @param	integer		Number of sections back in time to check. This is a kind of limit for how many failures an hour for instance.
	 * @param	integer		Max allowed failures before a warning mail is sent
	 * @return	void
	 * @access private
	 */
	function checkLogFailures($email, $secondsBack=3600, $max=3)	{

		if ($email)	{

				// get last flag set in the log for sending
			$theTimeBack = time()-$secondsBack;
			$res = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
							'tstamp',
							'sys_log',
							'type=255 AND action=4 AND tstamp>'.intval($theTimeBack),
							'',
							'tstamp DESC',
							'1'
						);
			if ($testRow = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res))	{
				$theTimeBack = $testRow['tstamp'];
			}

				// Check for more than $max number of error failures with the last period.
			$res = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
							'*',
							'sys_log',
							'type=255 AND action=3 AND error!=0 AND tstamp>'.intval($theTimeBack),
							'',
							'tstamp'
						);
			if ($GLOBALS['TYPO3_DB']->sql_num_rows($res) > $max)	{
					// OK, so there were more than the max allowed number of login failures - so we will send an email then.
				$subject = 'TYPO3 Login Failure Warning (at '.$GLOBALS['TYPO3_CONF_VARS']['SYS']['sitename'].')';
				$email_body = '
There has been numerous attempts ('.$GLOBALS['TYPO3_DB']->sql_num_rows($res).') to login at the TYPO3
site "'.$GLOBALS['TYPO3_CONF_VARS']['SYS']['sitename'].'" ('.t3lib_div::getIndpEnv('HTTP_HOST').').

This is a dump of the failures:

';
				while($testRows = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res))	{
					$theData = unserialize($testRows['log_data']);
					$email_body.=date($GLOBALS['TYPO3_CONF_VARS']['SYS']['ddmmyy'].' H:i',$testRows['tstamp']).':  '.@sprintf($testRows['details'],''.$theData[0],''.$theData[1],''.$theData[2]);
					$email_body.=chr(10);
				}
				mail(	$email,
						$subject,
						$email_body,
						'From: TYPO3 Login WARNING<>'
				);
				$this->writelog(255,4,0,3,'Failure warning (%s failures within %s seconds) sent by email to %s',Array($GLOBALS['TYPO3_DB']->sql_num_rows($res),$secondsBack,$email));	// Logout written to log
			}
		}
	}
}



if (defined('TYPO3_MODE') && $TYPO3_CONF_VARS[TYPO3_MODE]['XCLASS']['t3lib/class.t3lib_userauthgroup.php'])	{
	include_once($TYPO3_CONF_VARS[TYPO3_MODE]['XCLASS']['t3lib/class.t3lib_userauthgroup.php']);
}
?>