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[mediawiki.git] / maintenance / updateRestrictions.php
blob175447e780d713d7a31d2b475bfaf68caf1f091d
1 <?php
2 /**
3 * Makes the required database updates for Special:ProtectedPages
4 * to show all protected pages, even ones before the page restrictions
5 * schema change. All remaining page_restriction column values are moved
6 * to the new table.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
21 * http://www.gnu.org/copyleft/gpl.html
23 * @file
24 * @ingroup Maintenance
27 require_once __DIR__ . '/Maintenance.php';
29 /**
30 * Maintenance script that updates page_restrictions table from
31 * old page_restriction column.
33 * @ingroup Maintenance
35 class UpdateRestrictions extends Maintenance {
36 public function __construct() {
37 parent::__construct();
38 $this->mDescription = "Updates page_restrictions table from old page_restriction column";
39 $this->setBatchSize( 100 );
42 public function execute() {
43 $db = wfGetDB( DB_MASTER );
44 if ( !$db->tableExists( 'page_restrictions' ) ) {
45 $this->error( "page_restrictions table does not exist", true );
48 $start = $db->selectField( 'page', 'MIN(page_id)', false, __METHOD__ );
49 if ( !$start ) {
50 $this->error( "Nothing to do.", true );
52 $end = $db->selectField( 'page', 'MAX(page_id)', false, __METHOD__ );
54 # Do remaining chunk
55 $end += $this->mBatchSize - 1;
56 $blockStart = $start;
57 $blockEnd = $start + $this->mBatchSize - 1;
58 $encodedExpiry = 'infinity';
59 while ( $blockEnd <= $end ) {
60 $this->output( "...doing page_id from $blockStart to $blockEnd\n" );
61 $cond = "page_id BETWEEN $blockStart AND $blockEnd AND page_restrictions !=''";
62 $res = $db->select( 'page', array( 'page_id', 'page_namespace', 'page_restrictions' ), $cond, __METHOD__ );
63 $batch = array();
64 foreach ( $res as $row ) {
65 $oldRestrictions = array();
66 foreach ( explode( ':', trim( $row->page_restrictions ) ) as $restrict ) {
67 $temp = explode( '=', trim( $restrict ) );
68 // Make sure we are not settings restrictions to ""
69 if ( count( $temp ) == 1 && $temp[0] ) {
70 // old old format should be treated as edit/move restriction
71 $oldRestrictions["edit"] = trim( $temp[0] );
72 $oldRestrictions["move"] = trim( $temp[0] );
73 } elseif ( $temp[1] ) {
74 $oldRestrictions[$temp[0]] = trim( $temp[1] );
77 # Clear invalid columns
78 if ( $row->page_namespace == NS_MEDIAWIKI ) {
79 $db->update( 'page', array( 'page_restrictions' => '' ),
80 array( 'page_id' => $row->page_id ), __FUNCTION__ );
81 $this->output( "...removed dead page_restrictions column for page {$row->page_id}\n" );
83 # Update restrictions table
84 foreach ( $oldRestrictions as $action => $restrictions ) {
85 $batch[] = array(
86 'pr_page' => $row->page_id,
87 'pr_type' => $action,
88 'pr_level' => $restrictions,
89 'pr_cascade' => 0,
90 'pr_expiry' => $encodedExpiry
94 # We use insert() and not replace() as Article.php replaces
95 # page_restrictions with '' when protected in the restrictions table
96 if ( count( $batch ) ) {
97 $ok = $db->deadlockLoop( array( $db, 'insert' ), 'page_restrictions',
98 $batch, __FUNCTION__, array( 'IGNORE' ) );
99 if ( !$ok ) {
100 throw new MWException( "Deadlock loop failed wtf :(" );
103 $blockStart += $this->mBatchSize - 1;
104 $blockEnd += $this->mBatchSize - 1;
105 wfWaitForSlaves();
107 $this->output( "...removing dead rows from page_restrictions\n" );
108 // Kill any broken rows from previous imports
109 $db->delete( 'page_restrictions', array( 'pr_level' => '' ) );
110 // Kill other invalid rows
111 $db->deleteJoin( 'page_restrictions', 'page', 'pr_page', 'page_id', array( 'page_namespace' => NS_MEDIAWIKI ) );
112 $this->output( "...Done!\n" );
116 $maintClass = "UpdateRestrictions";
117 require_once RUN_MAINTENANCE_IF_MAIN;