maintenance/updateRestrictions.php

   1 <?php
   2
   3 /*
   4  * Makes the required database updates for Special:ProtectedPages
   5  * to show all protected pages, even ones before the page restrictions
   6  * schema change. All remaining page_restriction column values are moved
   7  * to the new table.
   8  */
   9
  10 define( 'BATCH_SIZE', 100 );
  11
  12 require_once 'commandLine.inc';
  13
  14 $db =& wfGetDB( DB_MASTER );
  15 if ( !$db->tableExists( 'page_restrictions' ) ) {
  16         echo "page_restrictions does not exist\n";
  17         exit( 1 );
  18 }
  19
  20 migrate_page_restrictions( $db );
  21
  22 function migrate_page_restrictions( $db ) {
  23
  24         $start = $db->selectField( 'page', 'MIN(page_id)', false, __FUNCTION__ );
  25         $end = $db->selectField( 'page', 'MAX(page_id)', false, __FUNCTION__ );
  26         $blockStart = $start;
  27         $blockEnd = $start + BATCH_SIZE - 1;
  28         $encodedExpiry = 'infinity';
  29         while ( $blockEnd <= $end ) {
  30                 $cond = "page_id BETWEEN $blockStart AND $blockEnd AND page_restrictions !='' AND page_restrictions !='edit=:move='";
  31                 $res = $db->select( 'page', array('page_id', 'page_restrictions'), $cond, __FUNCTION__ );
  32                 $batch = array();
  33                 while ( $row = $db->fetchObject( $res ) ) {
  34                         $oldRestrictions = array();
  35                         foreach( explode( ':', trim( $row->page_restrictions ) ) as $restrict ) {
  36                                 $temp = explode( '=', trim( $restrict ) );
  37                                 if(count($temp) == 1) {
  38                                         // old old format should be treated as edit/move restriction
  39                                         $oldRestrictions["edit"] = trim( $temp[0] );
  40                                         $oldRestrictions["move"] = trim( $temp[0] );
  41                                 } else {
  42                                         $oldRestrictions[$temp[0]] = trim( $temp[1] );
  43                                 }
  44                         }
  45                         # Update restrictions table
  46                         foreach( $oldRestrictions as $action => $restrictions ) {
  47                                 $batch[] = array(
  48                                         'pr_page' => $row->page_id,
  49                                         'pr_type' => $action,
  50                                         'pr_level' => $restrictions,
  51                                         'pr_cascade' => 0,
  52                                         'pr_expiry' => $encodedExpiry
  53                                 );
  54                         }
  55                 }
  56                 # We use insert() and not replace() as Article.php replaces
  57                 # page_restrictions with '' when protected in the restrictions table
  58                 if ( count( $batch ) ) {
  59                         $db->insert( 'page_restrictions', $batch, __FUNCTION__, array( 'IGNORE' ) );
  60                 }
  61                 $blockStart += BATCH_SIZE;
  62                 $blockEnd += BATCH_SIZE;
  63                 wfWaitForSlaves( 5 );
  64         }
  65 }
  66
  67