MediaWiki  1.27.2
cleanupBlocks.php
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1 <?php
24 require_once __DIR__ . '/Maintenance.php';
25 
32 class CleanupBlocks extends Maintenance {
33 
34  public function __construct() {
35  parent::__construct();
36  $this->addDescription( "Cleanup user blocks with user names not matching the 'user' table" );
37  $this->setBatchSize( 1000 );
38  }
39 
40  public function execute() {
41  $db = $this->getDB( DB_MASTER );
42 
43  $max = $db->selectField( 'ipblocks', 'MAX(ipb_user)' );
44 
45  // Step 1: Clean up any duplicate user blocks
46  for ( $from = 1; $from <= $max; $from += $this->mBatchSize ) {
47  $to = min( $max, $from + $this->mBatchSize - 1 );
48  $this->output( "Cleaning up duplicate ipb_user ($from-$to of $max)\n" );
49 
50  $delete = [];
51 
52  $res = $db->select(
53  'ipblocks',
54  [ 'ipb_user' ],
55  [
56  "ipb_user >= $from",
57  "ipb_user <= $to",
58  ],
59  __METHOD__,
60  [
61  'GROUP BY' => 'ipb_user',
62  'HAVING' => 'COUNT(*) > 1',
63  ]
64  );
65  foreach ( $res as $row ) {
66  $bestBlock = null;
67  $res2 = $db->select(
68  'ipblocks',
69  '*',
70  [
71  'ipb_user' => $row->ipb_user,
72  ]
73  );
74  foreach ( $res2 as $row2 ) {
75  $block = Block::newFromRow( $row2 );
76  if ( !$bestBlock ) {
77  $bestBlock = $block;
78  continue;
79  }
80 
81  // Find the most-restrictive block. Can't use
82  // Block::chooseBlock because that's for IP blocks, not
83  // user blocks.
84  $keep = null;
85  if ( $keep === null && $block->getExpiry() !== $bestBlock->getExpiry() ) {
86  // This works for infinite blocks because 'infinity' > '20141024234513'
87  $keep = $block->getExpiry() > $bestBlock->getExpiry();
88  }
89  if ( $keep === null ) {
90  foreach ( [ 'createaccount', 'sendemail', 'editownusertalk' ] as $action ) {
91  if ( $block->prevents( $action ) xor $bestBlock->prevents( $action ) ) {
92  $keep = $block->prevents( $action );
93  break;
94  }
95  }
96  }
97 
98  if ( $keep ) {
99  $delete[] = $bestBlock->getId();
100  $bestBlock = $block;
101  } else {
102  $delete[] = $block->getId();
103  }
104  }
105  }
106 
107  if ( $delete ) {
108  $db->delete(
109  'ipblocks',
110  [ 'ipb_id' => $delete ],
111  __METHOD__
112  );
113  }
114  }
115 
116  // Step 2: Update the user name in any blocks where it doesn't match
117  for ( $from = 1; $from <= $max; $from += $this->mBatchSize ) {
118  $to = min( $max, $from + $this->mBatchSize - 1 );
119  $this->output( "Cleaning up mismatched user name ($from-$to of $max)\n" );
120 
121  $res = $db->select(
122  [ 'ipblocks', 'user' ],
123  [ 'ipb_id', 'user_name' ],
124  [
125  'ipb_user = user_id',
126  "ipb_user >= $from",
127  "ipb_user <= $to",
128  'ipb_address != user_name',
129  ],
130  __METHOD__
131  );
132  foreach ( $res as $row ) {
133  $db->update(
134  'ipblocks',
135  [ 'ipb_address' => $row->user_name ],
136  [ 'ipb_id' => $row->ipb_id ],
137  __METHOD__
138  );
139  }
140  }
141 
142  $this->output( "Done!\n" );
143  }
144 }
145 
146 $maintClass = "CleanupBlocks";
147 require_once RUN_MAINTENANCE_IF_MAIN;
Abstract maintenance class for quickly writing and churning out maintenance scripts with minimal effo...
Definition: maintenance.txt:39
getDB($db, $groups=[], $wiki=false)
Returns a database to be used by current maintenance script.
require_once RUN_MAINTENANCE_IF_MAIN
Definition: maintenance.txt:50
$maintClass
$res
Definition: database.txt:21
Maintenance script to clean up user blocks with user names not matching the 'user' table...
addDescription($text)
Set the description text.
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Definition: distributors.txt:9
static newFromRow($row)
Create a new Block object from a database row.
Definition: Block.php:423
output($out, $channel=null)
Throw some output to the user.
$from
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Definition: injection.txt:35
int $mBatchSize
Batch size.
Definition: Maintenance.php:99
const DB_MASTER
Definition: Defines.php:47
setBatchSize($s=0)
Set the batch size.