Adding fixPageRestrcionts.php, a maintenance script which deals with bug 13132.

diff --git a/maintenance/fixPageRestrictions.php b/maintenance/fixPageRestrictions.php
new file mode 100644 (file)
index 0000000..dbdc618
--- /dev/null
+++ b/maintenance/fixPageRestrictions.php
@@ -0,0 +1,103 @@
+<?php
+/**
+ * Maintenance script to fix the page restrictions which were added using an
+ * older version of MediaWiki.
+ * 
+ * Background
+ *
+ * Before page_restrictions table was introduced in version 1.10
+ * (r19095\96r19703), page protection was handled by modifying the value of 
+ * page_restrictions field of the page table. Initially, this field either was
+ * left empty (ie page was not protected) or filled with the value "sysop" or
+ * "autoconfirmed". Later, it was decided that edit protection and move 
+ * protection should be handled separately, so again, either the field was
+ * left empty, or filled with something like "edit=x:move=y" where x and y were
+ * either "sysop" or "autoconfirmed" (without quotes) themselves. Often,
+ * the order of the two parts were reversed (ie "move=x:edit=y").
+ *
+ * When page_restrictions table was introduced, the code was touched in a way
+ * that if a page's protection level was changed, the old values in the page
+ * table were wiped out. The problem is, this part of code only runs when the
+ * protection level of the page *is changed*, and unfortunately, if an admin
+ * tries to unprotect the page, the code doesn't *sense* a change in protection
+ * level (because it compares the new value -- ie, nothing -- against the value
+ * of the page_restrictions table -- which is again nothing. This is reported on
+ * bugzilla as bug 13132.
+ * 
+ * This maintenance script deals with the problem, by moving the protection data
+ * from page table to page_restrictions table.
+ *
+ * @addtogroup Maintenance
+ * @author Hojjat (aka Huji) <huji.huji@gmail.com>
+ */
+
+require_once( 'commandLine.inc' );
+
+$fname = 'fixPageRestrictions.php';
+
+$dbw = wfGetDB( DB_MASTER );
+
+// Get user IDs which need fixing
+$res = $dbw->select( 'page', 'page_id, page_restrictions', 'page_restrictions <>\'\'', $fname );
+
+while ( $row = $dbw->fetchObject( $res ) ) {
+       $id = $row->page_id;
+       $old_restrictions = $row->page_restrictions;
+       $edit_restriction = '';
+       $move_restriction = '';
+       if ( strpos( $old_restrictions, '=' ) !== false ) {
+               if ( strpos( $old_restrictions, ':' ) !== false ) {
+                       # either "edit=x:move=y" or "move=x:edit=y"
+                       if ( strpos( $old_restrictions, 'edit' ) == 0 ){
+                               # "edit=x:move=y"
+                               $edit_restriction = substr( $old_restrictions, 5, strlen( $old_restrictions) - strpos( $old_restrictions, ':') - 6);
+                               $move_restriction = substr( $old_restrictions, 5, strlen( $old_restrictions) - strpos( $old_restrictions, ':') - 6);
+                       } else {
+                               # "move=x:edit=y"
+                               $move_restriction = substr( $old_restrictions, 5, strlen( $old_restrictions) - strpos( $old_restrictions, ':') - 6);
+                               $edit_restriction = substr( $old_restrictions, 5, strlen( $old_restrictions) - strpos( $old_restrictions, ':') - 6);
+                       }
+               } else {
+                       # either "edit=x" or "move=x"
+                       if ( strpos( $old_restrictions, 'edit') !== false ) {
+                               $edit_restriction = substr( $old_restrictions, 5);
+                       } else {
+                               $move_restriction = substr( $old_restrictions, 5);
+                       }
+               }
+       } else {
+               # either "sysop" or "autoconfirmed" -- or an unexpected value
+               if ( $old_restrictions == 'sysop' ) {
+                       $edit_restriction = 'sysop';
+                       $move_restriction = 'sysop';
+               } elseif ( $old_restrictions == 'autoconfirmed' ) {
+                       $edit_restriction = 'autoconfirmed';
+                       $move_restriction = 'autoconfirmed';
+               } else {
+                       #Shouldn't happen
+                       print "WARNING: I found a record with old restriction set to '$old_restrictions' and I can't handle it!\n";
+               }
+       }
+       
+       if ( $edit_restriction <> '' ) {
+               $dbw->replace( 'page_restrictions',
+                       array(array('pr_page', 'pr_type')),
+                       array( 'pr_page' => $id, 'pr_type' => 'edit'
+                               , 'pr_level' => $edit_restriction, 'pr_cascade' => 0
+                               , 'pr_expiry' => 'infinity' ),
+                       $fname );
+       }
+       if ( $move_restriction <> '' ) {
+               $dbw->replace( 'page_restrictions',
+                       array(array('pr_page', 'pr_type')),
+                       array( 'pr_page' => $id, 'pr_type' => 'move'
+                               , 'pr_level' => $move_restriction, 'pr_cascade' => 0
+                               , 'pr_expiry' => 'infinity' ),
+                       $fname );
+       }
+       
+       $dbw->update( 'page', array( 'page_restrictions' => ''), array( 'page_id' => $id), $fname);
+       
+       print "Fixed restrictions for page_id=$id\n   from '$old_restrictions'\n   to 'edit=$edit_restriction, move=$move_restriction'\n";
+}
+print "\n";
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