DataHandler.php 321 KB
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<?php
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namespace TYPO3\CMS\Core\DataHandling;
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/***************************************************************
 *  Copyright notice
 *
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 *  (c) 1999-2013 Kasper Skårhøj (kasperYYYY@typo3.com)
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 *  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!
 ***************************************************************/
Christian Kuhn's avatar
Christian Kuhn committed
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use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Backend\Utility\BackendUtility;
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use TYPO3\CMS\Extbase\Utility\DebuggerUtility;
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/**
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 * The main data handler class which takes care of correctly updating and inserting records.
 * This class was formerly known as TCEmain.
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 *
 * This is the TYPO3 Core Engine class for manipulation of the database
 * This class is used by eg. the tce_db.php script which provides an the interface for POST forms to this class.
 *
 * Dependencies:
 * - $GLOBALS['TCA'] must exist
 * - $GLOBALS['LANG'] must exist
 *
 * tce_db.php for further comments and SYNTAX! Also see document 'TYPO3 Core API' for details.
 *
 * @author Kasper Skårhøj <kasperYYYY@typo3.com>
 */
class DataHandler {

	// *********************
	// Public variables you can configure before using the class:
	// *********************
	/**
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	 * If TRUE, the default log-messages will be stored. This should not be necessary if the locallang-file for the
	 * log-display is properly configured. So disabling this will just save some database-space as the default messages are not saved.
	 *
	 * @var boolean
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	 */
	public $storeLogMessages = TRUE;

	/**
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	 * If TRUE, actions are logged to sys_log.
	 *
	 * @var boolean
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	 */
	public $enableLogging = TRUE;

	/**
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	 * If TRUE, the datamap array is reversed in the order, which is a nice thing if you're creating a whole new
	 * bunch of records.
	 *
	 * @var boolean
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	 */
	public $reverseOrder = FALSE;

	/**
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	 * If TRUE, only fields which are different from the database values are saved! In fact, if a whole input array
	 * is similar, it's not saved then.
	 *
	 * @var boolean
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	 */
	public $checkSimilar = TRUE;

	/**
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	 * If TRUE, incoming values in the data-array have their slashes stripped. ALWAYS SET THIS TO ZERO and supply an
	 * unescaped data array instead. This switch may totally disappear in future versions of this class!
	 *
	 * @var boolean
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	 */
	public $stripslashes_values = TRUE;

	/**
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	 * This will read the record after having updated or inserted it. If anything is not properly submitted an error
	 * is written to the log. This feature consumes extra time by selecting records
	 *
	 * @var boolean
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	 */
	public $checkStoredRecords = TRUE;

	/**
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	 * If set, values '' and 0 will equal each other when the stored records are checked.
	 *
	 * @var boolean
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	 */
	public $checkStoredRecords_loose = TRUE;

	/**
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	 * If this is set, then a page is deleted by deleting the whole branch under it (user must have
	 * delete permissions to it all). If not set, then the page is deleted ONLY if it has no branch.
	 *
	 * @var boolean
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	 */
	public $deleteTree = FALSE;

	/**
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	 * If set, then the 'hideAtCopy' flag for tables will be ignored.
	 *
	 * @var boolean
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	 */
	public $neverHideAtCopy = FALSE;

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	/**
	 * If set, then the TCE class has been instantiated during an import action of a T3D
	 *
	 * @var boolean
	 */
	public $isImporting = FALSE;

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	/**
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	 * If set, then transformations are NOT performed on the input.
	 *
	 * @var boolean
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	 */
	public $dontProcessTransformations = FALSE;

	/**
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	 * If set, .vDEFbase values are unset in flexforms.
	 *
	 * @var boolean
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	 */
	public $clear_flexFormData_vDEFbase = FALSE;

	/**
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	 * TRUE: (traditional) Updates when record is saved. For flexforms, updates if change is made to the localized value.
	 * FALSE: Will not update anything.
	 * "FORCE_FFUPD" (string): Like TRUE, but will force update to the FlexForm Field
	 *
	 * @var boolean|string
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	 */
	public $updateModeL10NdiffData = TRUE;

	/**
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	 * If TRUE, the translation diff. fields will in fact be reset so that they indicate that all needs to change again!
	 * It's meant as the opposite of declaring the record translated.
	 *
	 * @var boolean
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	 */
	public $updateModeL10NdiffDataClear = FALSE;

	/**
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	 * If TRUE, workspace restrictions are bypassed on edit an create actions (process_datamap()).
	 * YOU MUST KNOW what you do if you use this feature!
	 *
	 * @var boolean
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	 */
	public $bypassWorkspaceRestrictions = FALSE;

	/**
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	 * If TRUE, file handling of attached files (addition, deletion etc) is bypassed - the value is saved straight away.
	 * YOU MUST KNOW what you are doing with this feature!
	 *
	 * @var boolean
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	 */
	public $bypassFileHandling = FALSE;

	/**
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	 * If TRUE, access check, check for deleted etc. for records is bypassed.
	 * YOU MUST KNOW what you are doing if you use this feature!
	 *
	 * @var boolean
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	 */
	public $bypassAccessCheckForRecords = FALSE;

	/**
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	 * Comma-separated list. This list of tables decides which tables will be copied. If empty then none will.
	 * If '*' then all will (that the user has permission to of course)
	 *
	 * @var string
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	 */
	public $copyWhichTables = '*';

	/**
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	 * If 0 then branch is NOT copied.
	 * If 1 then pages on the 1st level is copied.
	 * If 2 then pages on the second level is copied ... and so on
	 *
	 * @var integer
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	 */
	public $copyTree = 0;

	/**
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	 * [table][fields]=value: New records are created with default values and you can set this array on the
	 * form $defaultValues[$table][$field] = $value to override the default values fetched from TCA.
	 * If ->setDefaultsFromUserTS is called UserTSconfig default values will overrule existing values in this array
	 * (thus UserTSconfig overrules externally set defaults which overrules TCA defaults)
	 *
	 * @var array
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	 */
	public $defaultValues = array();

	/**
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	 * [table][fields]=value: You can set this array on the form $overrideValues[$table][$field] = $value to
	 * override the incoming data. You must set this externally. You must make sure the fields in this array are also
	 * found in the table, because it's not checked. All columns can be set by this array!
	 *
	 * @var array
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	 */
	public $overrideValues = array();

	/**
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	 * [filename]=alternative_filename: Use this array to force another name onto a file.
	 * Eg. if you set ['/tmp/blablabal'] = 'my_file.txt' and '/tmp/blablabal' is set for a certain file-field,
	 * then 'my_file.txt' will be used as the name instead.
	 *
	 * @var array
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	 */
	public $alternativeFileName = array();

	/**
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	 * Array [filename]=alternative_filepath: Same as alternativeFileName but with relative path to the file
	 *
	 * @var array
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	 */
	public $alternativeFilePath = array();

	/**
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	 * If entries are set in this array corresponding to fields for update, they are ignored and thus NOT updated.
	 * You could set this array from a series of checkboxes with value=0 and hidden fields before the checkbox with 1.
	 * Then an empty checkbox will disable the field.
	 *
	 * @var array
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	 */
	public $data_disableFields = array();

	/**
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	 * Use this array to validate suggested uids for tables by setting [table]:[uid]. This is a dangerous option
	 * since it will force the inserted record to have a certain UID. The value just have to be TRUE, but if you set
	 * it to "DELETE" it will make sure any record with that UID will be deleted first (raw delete).
	 * The option is used for import of T3D files when synchronizing between two mirrored servers.
	 * As a security measure this feature is available only for Admin Users (for now)
	 *
	 * @var array
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	 */
	public $suggestedInsertUids = array();

	/**
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	 * Object. Call back object for FlexForm traversal. Useful when external classes wants to use the
	 * iteration functions inside DataHandler for traversing a FlexForm structure.
	 *
	 * @var object
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	 */
	public $callBackObj;

	// *********************
	// Internal variables (mapping arrays) which can be used (read-only) from outside
	// *********************
	/**
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	 * Contains mapping of auto-versionized records.
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $autoVersionIdMap = array();

	/**
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	 * When new elements are created, this array contains a map between their "NEW..." string IDs and the eventual UID they got when stored in database
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $substNEWwithIDs = array();

	/**
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	 * Like $substNEWwithIDs, but where each old "NEW..." id is mapped to the table it was from.
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $substNEWwithIDs_table = array();

	/**
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	 * Holds the tables and there the ids of newly created child records from IRRE
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $newRelatedIDs = array();

	/**
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	 * This array is the sum of all copying operations in this class. May be READ from outside, thus partly public.
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $copyMappingArray_merged = array();

	/**
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	 * A map between input file name and final destination for files being attached to records.
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $copiedFileMap = array();

	/**
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	 * Contains [table][id][field] of fiels where RTEmagic images was copied. Holds old filename as key and new filename as value.
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $RTEmagic_copyIndex = array();

	/**
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	 * Errors are collected in this variable.
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $errorLog = array();

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	// *********************
	// Internal Variables, do not touch.
	// *********************
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	// Variables set in init() function:
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	/**
	 * The user-object the script uses. If not set from outside, this is set to the current global $BE_USER.
	 *
	 * @var \TYPO3\CMS\Core\Authentication\BackendUserAuthentication
	 * @todo Define visibility
	 */
	public $BE_USER;

	/**
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	 * Will be set to uid of be_user executing this script
	 *
	 * @var integer
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	 * @todo Define visibility
	 */
	public $userid;

	/**
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	 * Will be set to username of be_user executing this script
	 *
	 * @var string
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	 * @todo Define visibility
	 */
	public $username;

	/**
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	 * Will be set if user is admin
	 *
	 * @var boolean
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	 * @todo Define visibility
	 */
	public $admin;

	/**
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	 * Can be overridden from $GLOBALS['TYPO3_CONF_VARS']
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $defaultPermissions = array(
		'user' => 'show,edit,delete,new,editcontent',
		'group' => 'show,edit,new,editcontent',
		'everybody' => ''
	);

	/**
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	 * The list of <table>-<fields> that cannot be edited by user.This is compiled from TCA/exclude-flag combined with non_exclude_fields for the user.
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $exclude_array;

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	/**
	 * Data submitted from the form view, used to control behaviours,
	 * e.g. this is used to activate/deactive fields and thus store NULL values
	 *
	 * @var array
	 */
	protected $control = array();

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	/**
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	 * Set with incoming data array
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $datamap = array();

	/**
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	 * Set with incoming cmd array
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $cmdmap = array();

	// Internal static:
	/**
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	 * Permission mapping
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $pMap = array(
		'show' => 1,
		// 1st bit
		'edit' => 2,
		// 2nd bit
		'delete' => 4,
		// 3rd bit
		'new' => 8,
		// 4th bit
		'editcontent' => 16
	);

	/**
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	 * Integer: The interval between sorting numbers used with tables with a 'sorting' field defined. Min 1
	 *
	 * @var integer
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	 * @todo Define visibility
	 */
	public $sortIntervals = 256;

	// Internal caching arrays
	/**
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	 * Used by function checkRecordUpdateAccess() to store whether a record is updateable or not.
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $recUpdateAccessCache = array();

	/**
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	 * User by function checkRecordInsertAccess() to store whether a record can be inserted on a page id
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $recInsertAccessCache = array();

	/**
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	 * Caching array for check of whether records are in a webmount
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $isRecordInWebMount_Cache = array();

	/**
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	 * Caching array for page ids in webmounts
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $isInWebMount_Cache = array();

	/**
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	 * Caching for collecting TSconfig for page ids
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $cachedTSconfig = array();

	/**
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	 * Used for caching page records in pageInfo()
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $pageCache = array();

	/**
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	 * Array caching workspace access for BE_USER
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $checkWorkspaceCache = array();

	// Other arrays:
	/**
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	 * For accumulation of MM relations that must be written after new records are created.
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $dbAnalysisStore = array();

	/**
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	 * For accumulation of files which must be deleted after processing of all input content
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $removeFilesStore = array();

	/**
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	 * Uploaded files, set by process_uploads()
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $uploadedFileArray = array();

	/**
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	 * Used for tracking references that might need correction after operations
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $registerDBList = array();

	/**
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	 * Used for tracking references that might need correction in pid field after operations (e.g. IRRE)
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $registerDBPids = array();

	/**
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	 * Used by the copy action to track the ids of new pages so subpages are correctly inserted!
	 * THIS is internally cleared for each executed copy operation! DO NOT USE THIS FROM OUTSIDE!
	 * Read from copyMappingArray_merged instead which is accumulating this information.
	 *
	 * NOTE: This is used by some outside scripts (e.g. hooks), as the results in $copyMappingArray_merged
	 * are only available after an action has been completed.
	 *
	 * @var array
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	 */
	public $copyMappingArray = array();

	/**
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	 * Array used for remapping uids and values at the end of process_datamap
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $remapStack = array();

	/**
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	 * Array used for remapping uids and values at the end of process_datamap
	 * (e.g. $remapStackRecords[<table>][<uid>] = <index in $remapStack>)
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $remapStackRecords = array();

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	/**
	 * Array used for checking whether new children need to be remapped
	 *
	 * @var array
	 */
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	protected $remapStackChildIds = array();

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	/**
	 * Array used for executing addition actions after remapping happened (set processRemapStack())
	 *
	 * @var array
	 */
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	protected $remapStackActions = array();

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	/**
	 * Array used for executing post-processing on the reference index
	 *
	 * @var array
	 */
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	protected $remapStackRefIndex = array();

	/**
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	 * Array used for additional calls to $this->updateRefIndex
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $updateRefIndexStack = array();

	/**
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	 * Tells, that this DataHandler instance was called from \TYPO3\CMS\Impext\ImportExport.
	 * This variable is set by \TYPO3\CMS\Impext\ImportExport
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $callFromImpExp = FALSE;

	/**
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	 * Array for new flexform index mapping
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $newIndexMap = array();

	// Various
	/**
	 * basicFileFunctions object
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	 * For "singleton" file-manipulation object
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	 *
	 * @var \TYPO3\CMS\Core\Utility\File\BasicFileUtility
	 * @todo Define visibility
	 */
	public $fileFunc;

	/**
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	 * Set to "currentRecord" during checking of values.
	 *
	 * @var array
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	 * @todo Define visibility
	 */
	public $checkValue_currentRecord = array();

	/**
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	 * A signal flag used to tell file processing that autoversioning has happend and hence certain action should be applied.
	 *
	 * @var boolean
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	 * @todo Define visibility
	 */
	public $autoVersioningUpdate = FALSE;

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	/**
	 * Disable delete clause
	 *
	 * @var boolean
	 */
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	protected $disableDeleteClause = FALSE;

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	/**
	 * @var array
	 */
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	protected $checkModifyAccessListHookObjects;

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	/**
	 * @var array
	 */
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	protected $version_remapMMForVersionSwap_reg;

	/**
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	 * The outer most instance of \TYPO3\CMS\Core\DataHandling\DataHandler:
	 * This object instantiates itself on versioning and localization ...
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	 *
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	 * @var \TYPO3\CMS\Core\DataHandling\DataHandler
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	 */
	protected $outerMostInstance = NULL;

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	/**
	 * @param array $control
	 */
	public function setControl(array $control) {
		$this->control = $control;
	}

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	/**
	 * Initializing.
	 * For details, see 'TYPO3 Core API' document.
	 * This function does not start the processing of data, but merely initializes the object
	 *
	 * @param array $data Data to be modified or inserted in the database
	 * @param array $cmd Commands to copy, move, delete, localize, versionize records.
	 * @param object $altUserObject An alternative userobject you can set instead of the default, which is $GLOBALS['BE_USER']
	 * @return void
	 */
	public function start($data, $cmd, $altUserObject = '') {
		// Initializing BE_USER
		$this->BE_USER = is_object($altUserObject) ? $altUserObject : $GLOBALS['BE_USER'];
		$this->userid = $this->BE_USER->user['uid'];
		$this->username = $this->BE_USER->user['username'];
		$this->admin = $this->BE_USER->user['admin'];
		if ($this->BE_USER->uc['recursiveDelete']) {
			$this->deleteTree = 1;
		}
		if ($GLOBALS['TYPO3_CONF_VARS']['BE']['explicitConfirmationOfTranslation'] && $this->updateModeL10NdiffData === TRUE) {
			$this->updateModeL10NdiffData = FALSE;
		}
		// Initializing default permissions for pages
		$defaultPermissions = $GLOBALS['TYPO3_CONF_VARS']['BE']['defaultPermissions'];
		if (isset($defaultPermissions['user'])) {
			$this->defaultPermissions['user'] = $defaultPermissions['user'];
		}
		if (isset($defaultPermissions['group'])) {
			$this->defaultPermissions['group'] = $defaultPermissions['group'];
		}
		if (isset($defaultPermissions['everybody'])) {
			$this->defaultPermissions['everybody'] = $defaultPermissions['everybody'];
		}
		// generates the excludelist, based on TCA/exclude-flag and non_exclude_fields for the user:
		$this->exclude_array = $this->admin ? array() : $this->getExcludeListArray();
		// Setting the data and cmd arrays
		if (is_array($data)) {
			reset($data);
			$this->datamap = $data;
		}
		if (is_array($cmd)) {
			reset($cmd);
			$this->cmdmap = $cmd;
		}
	}

	/**
	 * Function that can mirror input values in datamap-array to other uid numbers.
	 * Example: $mirror[table][11] = '22,33' will look for content in $this->datamap[table][11] and copy it to $this->datamap[table][22] and $this->datamap[table][33]
	 *
	 * @param array $mirror This array has the syntax $mirror[table_name][uid] = [list of uids to copy data-value TO!]
	 * @return void
	 * @todo Define visibility
	 */
	public function setMirror($mirror) {
		if (is_array($mirror)) {
			foreach ($mirror as $table => $uid_array) {
				if (isset($this->datamap[$table])) {
					foreach ($uid_array as $id => $uidList) {
						if (isset($this->datamap[$table][$id])) {
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							$theIdsInArray = GeneralUtility::trimExplode(',', $uidList, TRUE);
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							foreach ($theIdsInArray as $copyToUid) {
								$this->datamap[$table][$copyToUid] = $this->datamap[$table][$id];
							}
						}
					}
				}
			}
		}
	}

	/**
	 * Initializes default values coming from User TSconfig
	 *
	 * @param array $userTS User TSconfig array
	 * @return void
	 * @todo Define visibility
	 */
	public function setDefaultsFromUserTS($userTS) {
		if (is_array($userTS)) {
			foreach ($userTS as $k => $v) {
				$k = substr($k, 0, -1);
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				if ($k && is_array($v) && isset($GLOBALS['TCA'][$k])) {
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					if (is_array($this->defaultValues[$k])) {
						$this->defaultValues[$k] = array_merge($this->defaultValues[$k], $v);
					} else {
						$this->defaultValues[$k] = $v;
					}
				}
			}
		}
	}

	/**
	 * Processing of uploaded files.
	 * It turns out that some versions of PHP arranges submitted data for files different if sent in an array. This function will unify this so the internal array $this->uploadedFileArray will always contain files arranged in the same structure.
	 *
	 * @param array $postFiles $_FILES array
	 * @return void
	 * @todo Define visibility
	 */
	public function process_uploads($postFiles) {
		if (is_array($postFiles)) {
			// Editing frozen:
			if ($this->BE_USER->workspace !== 0 && $this->BE_USER->workspaceRec['freeze']) {
				$this->newlog('All editing in this workspace has been frozen!', 1);
				return FALSE;
			}
			$subA = reset($postFiles);
			if (is_array($subA)) {
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				if (is_array($subA['name']) && is_array($subA['type']) && is_array($subA['tmp_name']) && is_array($subA['size'])) {
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					// Initialize the uploadedFilesArray:
					$this->uploadedFileArray = array();
					// For each entry:
					foreach ($subA as $key => $values) {
						$this->process_uploads_traverseArray($this->uploadedFileArray, $values, $key);
					}
				} else {
					$this->uploadedFileArray = $subA;
				}
			}
		}
	}

	/**
	 * Traverse the upload array if needed to rearrange values.
	 *
	 * @param array $outputArr $this->uploadedFileArray passed by reference
	 * @param array $inputArr Input array  ($_FILES parts)
	 * @param string $keyToSet The current $_FILES array key to set on the outermost level.
	 * @return void
	 * @access private
	 * @see process_uploads()
	 * @todo Define visibility
	 */
	public function process_uploads_traverseArray(&$outputArr, $inputArr, $keyToSet) {
		if (is_array($inputArr)) {
			foreach ($inputArr as $key => $value) {
				$this->process_uploads_traverseArray($outputArr[$key], $inputArr[$key], $keyToSet);
			}
		} else {
			$outputArr[$keyToSet] = $inputArr;
		}
	}

	/*********************************************
	 *
	 * HOOKS
	 *
	 *********************************************/
	/**
	 * Hook: processDatamap_afterDatabaseOperations
	 * (calls $hookObj->processDatamap_afterDatabaseOperations($status, $table, $id, $fieldArray, $this);)
	 *
	 * Note: When using the hook after INSERT operations, you will only get the temporary NEW... id passed to your hook as $id,
	 * but you can easily translate it to the real uid of the inserted record using the $this->substNEWwithIDs array.
	 *
	 * @param object $hookObjectsArr (reference) Array with hook objects
	 * @param string $status (reference) Status of the current operation, 'new' or 'update
	 * @param string $table (refrence) The table currently processing data for
	 * @param string $id (reference) The record uid currently processing data for, [integer] or [string] (like 'NEW...')
	 * @param array $fieldArray (reference) The field array of a record
	 * @return void
	 * @todo Define visibility
	 */
	public function hook_processDatamap_afterDatabaseOperations(&$hookObjectsArr, &$status, &$table, &$id, &$fieldArray) {
		// Process hook directly:
		if (!isset($this->remapStackRecords[$table][$id])) {
			foreach ($hookObjectsArr as $hookObj) {
				if (method_exists($hookObj, 'processDatamap_afterDatabaseOperations')) {
					$hookObj->processDatamap_afterDatabaseOperations($status, $table, $id, $fieldArray, $this);
				}
			}
		} else {
			$this->remapStackRecords[$table][$id]['processDatamap_afterDatabaseOperations'] = array(
				'status' => $status,
				'fieldArray' => $fieldArray,
				'hookObjectsArr' => $hookObjectsArr
			);
		}
	}

	/**
	 * Gets the 'checkModifyAccessList' hook objects.
	 * The first call initializes the accordant objects.
	 *
	 * @return array The 'checkModifyAccessList' hook objects (if any)
	 */
	protected function getCheckModifyAccessListHookObjects() {
		if (!isset($this->checkModifyAccessListHookObjects)) {
			$this->checkModifyAccessListHookObjects = array();
			if (is_array($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_tcemain.php']['checkModifyAccessList'])) {
				foreach ($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_tcemain.php']['checkModifyAccessList'] as $classData) {
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					$hookObject = GeneralUtility::getUserObj($classData);
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					if (!$hookObject instanceof \TYPO3\CMS\Core\DataHandling\DataHandlerCheckModifyAccessListHookInterface) {
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						throw new \UnexpectedValueException('$hookObject must implement interface \\TYPO3\\CMS\\Core\\DataHandling\\DataHandlerCheckModifyAccessListHookInterface', 1251892472);
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					}
					$this->checkModifyAccessListHookObjects[] = $hookObject;
				}
			}
		}
		return $this->checkModifyAccessListHookObjects;
	}

	/*********************************************
	 *
	 * PROCESSING DATA
	 *
	 *********************************************/
	/**
	 * Processing the data-array
	 * Call this function to process the data-array set by start()
	 *
	 * @return void
	 */
	public function process_datamap() {
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		$this->controlActiveElements();

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		// Keep versionized(!) relations here locally:
		$registerDBList = array();
		$this->registerElementsToBeDeleted();
		$this->datamap = $this->unsetElementsToBeDeleted($this->datamap);
		// Editing frozen:
		if ($this->BE_USER->workspace !== 0 && $this->BE_USER->workspaceRec['freeze']) {
			$this->newlog('All editing in this workspace has been frozen!', 1);
			return FALSE;
		}
		// First prepare user defined objects (if any) for hooks which extend this function:
		$hookObjectsArr = array();
		if (is_array($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_tcemain.php']['processDatamapClass'])) {
			foreach ($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_tcemain.php']['processDatamapClass'] as $classRef) {
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				$hookObject = GeneralUtility::getUserObj($classRef);
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				if (method_exists($hookObject, 'processDatamap_beforeStart')) {
					$hookObject->processDatamap_beforeStart($this);
				}
				$hookObjectsArr[] = $hookObject;
			}
		}
		// Organize tables so that the pages-table is always processed first. This is required if you want to make sure that content pointing to a new page will be created.
		$orderOfTables = array();
		// Set pages first.
		if (isset($this->datamap['pages'])) {
			$orderOfTables[] = 'pages';
		}
		$orderOfTables = array_unique(array_merge($orderOfTables, array_keys($this->datamap)));
		// Process the tables...
		foreach ($orderOfTables as $table) {
			// Check if
			//	   - table is set in $GLOBALS['TCA'],
			//	   - table is NOT readOnly
			//	   - the table is set with content in the data-array (if not, there's nothing to process...)
			//	   - permissions for tableaccess OK
			$modifyAccessList = $this->checkModifyAccessList($table);
			if (!$modifyAccessList) {
				$id = 0;
				$this->log($table, $id, 2, 0, 1, 'Attempt to modify table \'%s\' without permission', 1, array($table));
			}
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			if (isset($GLOBALS['TCA'][$table]) && !$this->tableReadOnly($table) && is_array($this->datamap[$table]) && $modifyAccessList) {
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				if ($this->reverseOrder) {
					$this->datamap[$table] = array_reverse($this->datamap[$table], 1);
				}
				// For each record from the table, do:
				// $id is the record uid, may be a string if new records...
				// $incomingFieldArray is the array of fields
				foreach ($this->datamap[$table] as $id => $incomingFieldArray) {
					if (is_array($incomingFieldArray)) {
						// Handle native date/time fields
						$dateTimeFormats = $GLOBALS['TYPO3_DB']->getDateTimeFormats($table);
						foreach ($GLOBALS['TCA'][$table]['columns'] as $column => $config) {
							if (isset($incomingFieldArray[$column])) {
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								if (isset($config['config']['dbType']) && GeneralUtility::inList('date,datetime', $config['config']['dbType'])) {
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									$emptyValue = $dateTimeFormats[$config['config']['dbType']]['empty'];
									$format = $dateTimeFormats[$config['config']['dbType']]['format'];
									$incomingFieldArray[$column] = $incomingFieldArray[$column] ? date($format, $incomingFieldArray[$column]) : $emptyValue;
								}
							}
						}
						// Hook: processDatamap_preProcessFieldArray
						foreach ($hookObjectsArr as $hookObj) {
							if (method_exists($hookObj, 'processDatamap_preProcessFieldArray')) {
								$hookObj->processDatamap_preProcessFieldArray($incomingFieldArray, $table, $id, $this);
							}
						}
						// ******************************
						// Checking access to the record
						// ******************************
						$createNewVersion = FALSE;
						$recordAccess = FALSE;
						$old_pid_value = '';
						$this->autoVersioningUpdate = FALSE;
						// Is it a new record? (Then Id is a string)
						if (!\TYPO3\CMS\Core\Utility\MathUtility::canBeInterpretedAsInteger($id)) {
							// Get a fieldArray with default values
							$fieldArray = $this->newFieldArray($table);
							// A pid must be set for new records.
							if (isset($incomingFieldArray['pid'])) {
								// $value = the pid
								$pid_value = $incomingFieldArray['pid'];
								// Checking and finding numerical pid, it may be a string-reference to another value
								$OK = 1;
								// If a NEW... id
								if (strstr($pid_value, 'NEW')) {
									if (substr($pid_value, 0, 1) == '-') {
										$negFlag = -1;
										$pid_value = substr($pid_value, 1);
									} else {
										$negFlag = 1;
									}
									// Trying to find the correct numerical value as it should be mapped by earlier processing of another new record.
									if (isset($this->substNEWwithIDs[$pid_value])) {
										if ($negFlag === 1) {
											$old_pid_value = $this->substNEWwithIDs[$pid_value];
										}
										$pid_value = intval($negFlag * $this->substNEWwithIDs[$pid_value]);
									} else {
										$OK = 0;
									}
								}
								$pid_value = intval($pid_value);
								// The $pid_value is now the numerical pid at this point
								if ($OK) {
									$sortRow = $GLOBALS['TCA'][$table]['ctrl']['sortby'];
									// Points to a page on which to insert the element, possibly in the top of the page
									if ($pid_value >= 0) {
										// If this table is sorted we better find the top sorting number
										if ($sortRow) {
											$fieldArray[$sortRow] = $this->getSortNumber($table, 0, $pid_value);
										}
										// The numerical pid is inserted in the data array