drupal-civicrm/sites/all/modules/civicrm/CRM/Logging/Reverter.php

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2018-01-14 15:10:16 +02:00
<?php
/*
+--------------------------------------------------------------------+
| CiviCRM version 4.7 |
+--------------------------------------------------------------------+
| Copyright CiviCRM LLC (c) 2004-2017 |
+--------------------------------------------------------------------+
| This file is a part of CiviCRM. |
| |
| CiviCRM is free software; you can copy, modify, and distribute it |
| under the terms of the GNU Affero General Public License |
| Version 3, 19 November 2007 and the CiviCRM Licensing Exception. |
| |
| CiviCRM 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 Affero General Public License for more details. |
| |
| You should have received a copy of the GNU Affero General Public |
| License and the CiviCRM Licensing Exception along |
| with this program; if not, contact CiviCRM LLC |
| at info[AT]civicrm[DOT]org. If you have questions about the |
| GNU Affero General Public License or the licensing of CiviCRM, |
| see the CiviCRM license FAQ at http://civicrm.org/licensing |
+--------------------------------------------------------------------+
*/
/**
*
* @package CRM
* @copyright CiviCRM LLC (c) 2004-2017
*/
class CRM_Logging_Reverter {
private $db;
private $log_conn_id;
private $log_date;
/**
* The diffs to be reverted.
*
* @var array
*/
private $diffs = array();
/**
* Class constructor.
*
* @param string $log_conn_id
* @param $log_date
*/
public function __construct($log_conn_id, $log_date) {
$dsn = defined('CIVICRM_LOGGING_DSN') ? DB::parseDSN(CIVICRM_LOGGING_DSN) : DB::parseDSN(CIVICRM_DSN);
$this->db = $dsn['database'];
$this->log_conn_id = $log_conn_id;
$this->log_date = $log_date;
}
/**
*
* Calculate a set of diffs based on the connection_id and changes at a close time.
*
* @param array $tables
*/
public function calculateDiffsFromLogConnAndDate($tables) {
$differ = new CRM_Logging_Differ($this->log_conn_id, $this->log_date);
$this->diffs = $differ->diffsInTables($tables);
}
/**
* Setter for diffs.
*
* @param array $diffs
*/
public function setDiffs($diffs) {
$this->diffs = $diffs;
}
/**
* Revert changes in the array of diffs in $this->diffs.
*/
public function revert() {
// get custom data tables, columns and types
$ctypes = array();
$dao = CRM_Core_DAO::executeQuery('SELECT table_name, column_name, data_type FROM civicrm_custom_group cg JOIN civicrm_custom_field cf ON (cf.custom_group_id = cg.id)');
while ($dao->fetch()) {
if (!isset($ctypes[$dao->table_name])) {
$ctypes[$dao->table_name] = array('entity_id' => 'Integer');
}
$ctypes[$dao->table_name][$dao->column_name] = $dao->data_type;
}
$diffs = $this->diffs;
$deletes = array();
$reverts = array();
foreach ($diffs as $table => $changes) {
foreach ($changes as $change) {
switch ($change['action']) {
case 'Insert':
if (!isset($deletes[$table])) {
$deletes[$table] = array();
}
$deletes[$table][] = $change['id'];
break;
case 'Delete':
case 'Update':
if (!isset($reverts[$table])) {
$reverts[$table] = array();
}
if (!isset($reverts[$table][$change['id']])) {
$reverts[$table][$change['id']] = array('log_action' => $change['action']);
}
$reverts[$table][$change['id']][$change['field']] = $change['from'];
break;
}
}
}
// revert inserts by deleting
foreach ($deletes as $table => $ids) {
CRM_Core_DAO::executeQuery("DELETE FROM `$table` WHERE id IN (" . implode(', ', array_unique($ids)) . ')');
}
// revert updates by updating to previous values
foreach ($reverts as $table => $row) {
switch (TRUE) {
// DAO-based tables
case (($tableDAO = CRM_Core_DAO_AllCoreTables::getClassForTable($table)) != FALSE):
$dao = new $tableDAO ();
foreach ($row as $id => $changes) {
$dao->id = $id;
foreach ($changes as $field => $value) {
if ($field == 'log_action') {
continue;
}
if (empty($value) and $value !== 0 and $value !== '0') {
$value = 'null';
}
// Date reaches this point in ISO format (possibly) so strip out stuff
// if it does have hyphens of colons demarking the date & it regexes as being a date
// or datetime format.
if (preg_match('/(\d{4})-(\d{2})-(\d{2}) (\d{2}):(\d{2}):(\d{2})/', $value)) {
$value = str_replace('-', '', $value);
$value = str_replace(':', '', $value);
}
$dao->$field = $value;
}
$changes['log_action'] == 'Delete' ? $dao->insert() : $dao->update();
$dao->reset();
}
break;
// custom data tables
case in_array($table, array_keys($ctypes)):
foreach ($row as $id => $changes) {
$inserts = array('id' => '%1');
$updates = array();
$params = array(1 => array($id, 'Integer'));
$counter = 2;
foreach ($changes as $field => $value) {
// dont try reverting a field thats no longer there
if (!isset($ctypes[$table][$field])) {
continue;
}
$fldVal = "%{$counter}";
switch ($ctypes[$table][$field]) {
case 'Date':
$value = substr(CRM_Utils_Date::isoToMysql($value), 0, 8);
break;
case 'Timestamp':
$value = CRM_Utils_Date::isoToMysql($value);
break;
case 'Boolean':
if ($value === '') {
$fldVal = 'DEFAULT';
}
}
$inserts[$field] = "%$counter";
$updates[] = "{$field} = {$fldVal}";
if ($fldVal != 'DEFAULT') {
$params[$counter] = array($value, $ctypes[$table][$field]);
}
$counter++;
}
if ($changes['log_action'] == 'Delete') {
$sql = "INSERT INTO `$table` (" . implode(', ', array_keys($inserts)) . ') VALUES (' . implode(', ', $inserts) . ')';
}
else {
$sql = "UPDATE `$table` SET " . implode(', ', $updates) . ' WHERE id = %1';
}
CRM_Core_DAO::executeQuery($sql, $params);
}
break;
}
}
}
}