CRM/Logging/Differ.php

   1 <?php
   2 /*
   3  +--------------------------------------------------------------------+
   4  | CiviCRM version 4.6                                                |
   5  +--------------------------------------------------------------------+
   6  | Copyright CiviCRM LLC (c) 2004-2014                                |
   7  +--------------------------------------------------------------------+
   8  | This file is a part of CiviCRM.                                    |
   9  |                                                                    |
  10  | CiviCRM is free software; you can copy, modify, and distribute it  |
  11  | under the terms of the GNU Affero General Public License           |
  12  | Version 3, 19 November 2007 and the CiviCRM Licensing Exception.   |
  13  |                                                                    |
  14  | CiviCRM is distributed in the hope that it will be useful, but     |
  15  | WITHOUT ANY WARRANTY; without even the implied warranty of         |
  16  | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.               |
  17  | See the GNU Affero General Public License for more details.        |
  18  |                                                                    |
  19  | You should have received a copy of the GNU Affero General Public   |
  20  | License and the CiviCRM Licensing Exception along                  |
  21  | with this program; if not, contact CiviCRM LLC                     |
  22  | at info[AT]civicrm[DOT]org. If you have questions about the        |
  23  | GNU Affero General Public License or the licensing of CiviCRM,     |
  24  | see the CiviCRM license FAQ at http://civicrm.org/licensing        |
  25  +--------------------------------------------------------------------+
  26 */
  27
  28 /**
  29  *
  30  * @package CRM
  31  * @copyright CiviCRM LLC (c) 2004-2014
  32  * $Id$
  33  *
  34  */
  35 class CRM_Logging_Differ {
  36   private $db;
  37   private $log_conn_id;
  38   private $log_date;
  39   private $interval;
  40
  41   /**
  42    * @param int $log_conn_id
  43    * @param $log_date
  44    * @param string $interval
  45    */
  46   function __construct($log_conn_id, $log_date, $interval = '10 SECOND') {
  47     $dsn               = defined('CIVICRM_LOGGING_DSN') ? DB::parseDSN(CIVICRM_LOGGING_DSN) : DB::parseDSN(CIVICRM_DSN);
  48     $this->db          = $dsn['database'];
  49     $this->log_conn_id = $log_conn_id;
  50     $this->log_date    = $log_date;
  51     $this->interval    = $interval;
  52   }
  53
  54   /**
  55    * @param $tables
  56    *
  57    * @return array
  58    */
  59   function diffsInTables($tables) {
  60     $diffs = array();
  61     foreach ($tables as $table) {
  62       $diff = $this->diffsInTable($table);
  63       if (!empty($diff)) {
  64         $diffs[$table] = $diff;
  65       }
  66     }
  67     return $diffs;
  68   }
  69
  70   /**
  71    * @param $table
  72    * @param int $contactID
  73    *
  74    * @return array
  75    */
  76   function diffsInTable($table, $contactID = null) {
  77     $diffs = array();
  78
  79     $params = array(
  80       1 => array($this->log_conn_id, 'Integer'),
  81       2 => array($this->log_date, 'String'),
  82     );
  83
  84     $logging = new CRM_Logging_Schema;
  85     $addressCustomTables = $logging->entityCustomDataLogTables('Address');
  86
  87     $contactIdClause = $join = '';
  88     if ( $contactID ) {
  89       $params[3] = array($contactID, 'Integer');
  90       switch ($table) {
  91       case 'civicrm_contact':
  92         $contactIdClause = "AND id = %3";
  93         break;
  94       case 'civicrm_note':
  95         $contactIdClause = "AND (( entity_id = %3 AND entity_table = 'civicrm_contact' ) OR (entity_id IN (SELECT note.id FROM `{$this->db}`.log_civicrm_note note WHERE note.entity_id = %3 AND note.entity_table = 'civicrm_contact') AND entity_table = 'civicrm_note'))";
  96         break;
  97       case 'civicrm_entity_tag':
  98         $contactIdClause = "AND entity_id = %3 AND entity_table = 'civicrm_contact'";
  99         break;
 100       case 'civicrm_relationship':
 101         $contactIdClause = "AND (contact_id_a = %3 OR contact_id_b = %3)";
 102         break;
 103       case 'civicrm_activity':
 104         $activityContacts = CRM_Core_OptionGroup::values('activity_contacts', FALSE, FALSE, FALSE, NULL, 'name');
 105         $sourceID = CRM_Utils_Array::key('Activity Source', $activityContacts);
 106         $assigneeID = CRM_Utils_Array::key('Activity Assignees', $activityContacts);
 107         $targetID = CRM_Utils_Array::key('Activity Targets', $activityContacts);
 108
 109         $join  = "
 110 LEFT JOIN civicrm_activity_contact at ON at.activity_id = lt.id AND at.contact_id = %3 AND at.record_type_id = {$targetID}
 111 LEFT JOIN civicrm_activity_contact aa ON aa.activity_id = lt.id AND aa.contact_id = %3 AND aa.record_type_id = {$assigneeID}
 112 LEFT JOIN civicrm_activity_contact source ON source.activity_id = lt.id AND source.contact_id = %3 AND source.record_type_id = {$sourceID} ";
 113         $contactIdClause = "AND (at.id IS NOT NULL OR aa.id IS NOT NULL OR source.id IS NOT NULL)";
 114         break;
 115       case 'civicrm_case':
 116         $contactIdClause = "AND id = (select case_id FROM civicrm_case_contact WHERE contact_id = %3 LIMIT 1)";
 117         break;
 118       default:
 119         if (array_key_exists($table, $addressCustomTables)) {
 120           $join  = "INNER JOIN `{$this->db}`.`log_civicrm_address` et ON et.id = lt.entity_id";
 121           $contactIdClause = "AND contact_id = %3";
 122           break;
 123         }
 124
 125         // allow tables to be extended by report hook query objects
 126         list($contactIdClause, $join) = CRM_Report_BAO_Hook::singleton()->logDiffClause($this, $table);
 127
 128         if (empty($contactIdClause)) {
 129           $contactIdClause = "AND contact_id = %3";
 130         }
 131         if ( strpos($table, 'civicrm_value') !== false ) {
 132           $contactIdClause = "AND entity_id = %3";
 133         }
 134       }
 135     }
 136
 137     // find ids in this table that were affected in the given connection (based on connection id and a ±10 s time period around the date)
 138     $sql = "
 139 SELECT DISTINCT lt.id FROM `{$this->db}`.`log_$table` lt
 140 {$join}
 141 WHERE lt.log_conn_id = %1 AND
 142       lt.log_date BETWEEN DATE_SUB(%2, INTERVAL {$this->interval}) AND DATE_ADD(%2, INTERVAL {$this->interval})
 143       {$contactIdClause}";
 144
 145     $dao = CRM_Core_DAO::executeQuery($sql, $params);
 146     while ($dao->fetch()) {
 147       $diffs = array_merge($diffs, $this->diffsInTableForId($table, $dao->id));
 148     }
 149
 150     return $diffs;
 151   }
 152
 153   /**
 154    * @param $table
 155    * @param int $id
 156    *
 157    * @return array
 158    */
 159   private function diffsInTableForId($table, $id) {
 160     $diffs = array();
 161
 162     $params = array(
 163       1 => array($this->log_conn_id, 'Integer'),
 164       2 => array($this->log_date, 'String'),
 165       3 => array($id, 'Integer'),
 166     );
 167
 168     // look for all the changes in the given connection that happended less than {$this->interval} s later than log_date to the given id to catch multi-query changes
 169     $changedSQL = "SELECT * FROM `{$this->db}`.`log_$table` WHERE log_conn_id = %1 AND log_date >= %2 AND log_date < DATE_ADD(%2, INTERVAL {$this->interval}) AND id = %3 ORDER BY log_date DESC LIMIT 1";
 170
 171     $changedDAO = CRM_Core_DAO::executeQuery($changedSQL, $params);
 172     while ($changedDAO->fetch( )) {
 173       $changed = $changedDAO->toArray();
 174
 175       // return early if nothing found
 176       if (empty($changed)) {
 177         continue;
 178       }
 179
 180       switch ($changed['log_action']) {
 181         case 'Delete':
 182           // the previous state is kept in the current state, current should keep the keys and clear the values
 183           $original = $changed;
 184           foreach ($changed as & $val) $val = NULL;
 185           $changed['log_action'] = 'Delete';
 186           break;
 187
 188         case 'Insert':
 189           // the previous state does not exist
 190           $original = array();
 191           break;
 192
 193         case 'Update':
 194           // look for the previous state (different log_conn_id) of the given id
 195           $originalSQL = "SELECT * FROM `{$this->db}`.`log_$table` WHERE log_conn_id != %1 AND log_date < %2 AND id = %3 ORDER BY log_date DESC LIMIT 1";
 196           $original = $this->sqlToArray($originalSQL, $params);
 197           if (empty($original)) {
 198             // A blank original array is not possible for Update action, otherwise we 'll end up displaying all information
 199             // in $changed variable as updated-info
 200             $original = $changed;
 201           }
 202
 203           break;
 204       }
 205
 206       // populate $diffs with only the differences between $changed and $original
 207       $skipped = array('log_action', 'log_conn_id', 'log_date', 'log_user_id');
 208       foreach (array_keys(array_diff_assoc($changed, $original)) as $diff) {
 209         if (in_array($diff, $skipped)) {
 210           continue;
 211         }
 212
 213         if (CRM_Utils_Array::value($diff, $original) === CRM_Utils_Array::value($diff, $changed)) {
 214           continue;
 215         }
 216
 217         // hack: case_type_id column is a varchar with separator. For proper mapping to type labels,
 218         // we need to make sure separators are trimmed
 219         if ($diff == 'case_type_id') {
 220           foreach (array('original', 'changed') as $var)  {
 221             if (!empty($$var[$diff])) {
 222               $holder =& $$var;
 223               $val = explode(CRM_Case_BAO_Case::VALUE_SEPARATOR, $holder[$diff]);
 224               $holder[$diff] = CRM_Utils_Array::value(1, $val);
 225             }
 226           }
 227         }
 228
 229         $diffs[] = array(
 230           'action' => $changed['log_action'],
 231           'id' => $id,
 232           'field' => $diff,
 233           'from' => CRM_Utils_Array::value($diff, $original),
 234           'to' => CRM_Utils_Array::value($diff, $changed),
 235         );
 236       }
 237     }
 238
 239     return $diffs;
 240   }
 241
 242   /**
 243    * @param $table
 244    *
 245    * @return array
 246    */
 247   function titlesAndValuesForTable($table) {
 248     // static caches for subsequent calls with the same $table
 249     static $titles = array();
 250     static $values = array();
 251
 252     // FIXME: split off the table → DAO mapping to a GenCode-generated class
 253     static $daos = array(
 254       'civicrm_address' => 'CRM_Core_DAO_Address',
 255       'civicrm_contact' => 'CRM_Contact_DAO_Contact',
 256       'civicrm_email' => 'CRM_Core_DAO_Email',
 257       'civicrm_im' => 'CRM_Core_DAO_IM',
 258       'civicrm_openid' => 'CRM_Core_DAO_OpenID',
 259       'civicrm_phone' => 'CRM_Core_DAO_Phone',
 260       'civicrm_website' => 'CRM_Core_DAO_Website',
 261       'civicrm_contribution' => 'CRM_Contribute_DAO_Contribution',
 262       'civicrm_note' => 'CRM_Core_DAO_Note',
 263       'civicrm_relationship' => 'CRM_Contact_DAO_Relationship',
 264       'civicrm_activity' => 'CRM_Activity_DAO_Activity',
 265       'civicrm_case' => 'CRM_Case_DAO_Case',
 266     );
 267
 268     if (!isset($titles[$table]) or !isset($values[$table])) {
 269
 270       if (in_array($table, array_keys($daos))) {
 271         // FIXME: these should be populated with pseudo constants as they
 272         // were at the time of logging rather than their current values
 273         // FIXME: Use *_BAO:buildOptions() method rather than pseudoconstants & fetch programmatically
 274         $values[$table] = array(
 275           'contribution_page_id' => CRM_Contribute_PseudoConstant::contributionPage(),
 276           'contribution_status_id' => CRM_Contribute_PseudoConstant::contributionStatus(),
 277           'financial_type_id'              => CRM_Contribute_PseudoConstant::financialType(),
 278           'country_id' => CRM_Core_PseudoConstant::country(),
 279           'gender_id' => CRM_Core_PseudoConstant::get('CRM_Contact_DAO_Contact', 'gender_id'),
 280           'location_type_id' => CRM_Core_PseudoConstant::get('CRM_Core_DAO_Address', 'location_type_id'),
 281           'payment_instrument_id' => CRM_Contribute_PseudoConstant::paymentInstrument(),
 282           'phone_type_id' => CRM_Core_PseudoConstant::get('CRM_Core_DAO_Phone', 'phone_type_id'),
 283           'preferred_communication_method' => CRM_Contact_BAO_Contact::buildOptions('preferred_communication_method'),
 284           'preferred_language' => CRM_Contact_BAO_Contact::buildOptions('preferred_language'),
 285           'prefix_id' => CRM_Contact_BAO_Contact::buildOptions('prefix_id'),
 286           'provider_id' => CRM_Core_PseudoConstant::get('CRM_Core_DAO_IM', 'provider_id'),
 287           'state_province_id' => CRM_Core_PseudoConstant::stateProvince(),
 288           'suffix_id' => CRM_Contact_BAO_Contact::buildOptions('suffix_id'),
 289           'website_type_id' => CRM_Core_PseudoConstant::get('CRM_Core_DAO_Website', 'website_type_id'),
 290           'activity_type_id' => CRM_Core_PseudoConstant::activityType(TRUE, TRUE, FALSE, 'label', TRUE),
 291           'case_type_id' => CRM_Case_PseudoConstant::caseType('title', FALSE),
 292           'priority_id'  => CRM_Core_PseudoConstant::get('CRM_Activity_DAO_Activity', 'priority_id'),
 293         );
 294
 295         // for columns that appear in more than 1 table
 296         switch ($table) {
 297           case 'civicrm_case':
 298             $values[$table]['status_id'] = CRM_Case_PseudoConstant::caseStatus('label', FALSE);
 299             break;
 300           case 'civicrm_activity':
 301             $values[$table]['status_id'] = CRM_Core_PseudoConstant::activityStatus( );
 302             break;
 303         }
 304
 305         $dao = new $daos[$table];
 306         foreach ($dao->fields() as $field) {
 307           $titles[$table][$field['name']] = CRM_Utils_Array::value('title', $field);
 308
 309           if ($field['type'] == CRM_Utils_Type::T_BOOLEAN) {
 310             $values[$table][$field['name']] = array('0' => ts('false'), '1' => ts('true'));
 311           }
 312         }
 313       }
 314       elseif (substr($table, 0, 14) == 'civicrm_value_') {
 315         list($titles[$table], $values[$table]) = $this->titlesAndValuesForCustomDataTable($table);
 316       } else {
 317         $titles[$table] = $values[$table] = array();
 318       }
 319     }
 320
 321     return array($titles[$table], $values[$table]);
 322   }
 323
 324   /**
 325    * @param $sql
 326    * @param array $params
 327    *
 328    * @return mixed
 329    */
 330   private function sqlToArray($sql, $params) {
 331     $dao = CRM_Core_DAO::executeQuery($sql, $params);
 332     $dao->fetch();
 333     return $dao->toArray();
 334   }
 335
 336   /**
 337    * @param $table
 338    *
 339    * @return array
 340    */
 341   private function titlesAndValuesForCustomDataTable($table) {
 342     $titles = array();
 343     $values = array();
 344
 345     $params = array(
 346       1 => array($this->log_conn_id, 'Integer'),
 347       2 => array($this->log_date, 'String'),
 348       3 => array($table, 'String'),
 349     );
 350
 351     $sql = "SELECT id, title FROM `{$this->db}`.log_civicrm_custom_group WHERE log_date <= %2 AND table_name = %3 ORDER BY log_date DESC LIMIT 1";
 352     $cgDao = CRM_Core_DAO::executeQuery($sql, $params);
 353     $cgDao->fetch();
 354
 355     $params[3] = array($cgDao->id, 'Integer');
 356     $sql = "
 357 SELECT column_name, data_type, label, name, option_group_id
 358 FROM   `{$this->db}`.log_civicrm_custom_field
 359 WHERE  log_date <= %2
 360 AND    custom_group_id = %3
 361 ORDER BY log_date
 362 ";
 363     $cfDao = CRM_Core_DAO::executeQuery($sql, $params);
 364
 365     while ($cfDao->fetch()) {
 366       $titles[$cfDao->column_name] = "{$cgDao->title}: {$cfDao->label}";
 367
 368       switch ($cfDao->data_type) {
 369         case 'Boolean':
 370           $values[$cfDao->column_name] = array('0' => ts('false'), '1' => ts('true'));
 371           break;
 372
 373         case 'String':
 374           $values[$cfDao->column_name] = array();
 375           if (!empty($cfDao->option_group_id)) {
 376             $params[3] = array($cfDao->option_group_id, 'Integer');
 377             $sql = "
 378 SELECT   label, value
 379 FROM     `{$this->db}`.log_civicrm_option_value
 380 WHERE    log_date <= %2
 381 AND      option_group_id = %3
 382 ORDER BY log_date
 383 ";
 384             $ovDao = CRM_Core_DAO::executeQuery($sql, $params);
 385             while ($ovDao->fetch()) {
 386               $values[$cfDao->column_name][$ovDao->value] = $ovDao->label;
 387             }
 388           }
 389           break;
 390       }
 391     }
 392
 393     return array($titles, $values);
 394   }
 395 }
 396