includes/api/ApiQueryBlocks.php

   1 <?php
   2 /**
   3  *
   4  *
   5  * Created on Sep 10, 2007
   6  *
   7  * Copyright © 2007 Roan Kattouw "<Firstname>.<Lastname>@gmail.com"
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  22  * http://www.gnu.org/copyleft/gpl.html
  23  *
  24  * @file
  25  */
  26
  27 /**
  28  * Query module to enumerate all user blocks
  29  *
  30  * @ingroup API
  31  */
  32 class ApiQueryBlocks extends ApiQueryBase {
  33
  34         public function __construct( ApiQuery $query, $moduleName ) {
  35                 parent::__construct( $query, $moduleName, 'bk' );
  36         }
  37
  38         public function execute() {
  39                 global $wgContLang;
  40
  41                 $db = $this->getDB();
  42                 $params = $this->extractRequestParams();
  43                 $this->requireMaxOneParameter( $params, 'users', 'ip' );
  44
  45                 $prop = array_flip( $params['prop'] );
  46                 $fld_id = isset( $prop['id'] );
  47                 $fld_user = isset( $prop['user'] );
  48                 $fld_userid = isset( $prop['userid'] );
  49                 $fld_by = isset( $prop['by'] );
  50                 $fld_byid = isset( $prop['byid'] );
  51                 $fld_timestamp = isset( $prop['timestamp'] );
  52                 $fld_expiry = isset( $prop['expiry'] );
  53                 $fld_reason = isset( $prop['reason'] );
  54                 $fld_range = isset( $prop['range'] );
  55                 $fld_flags = isset( $prop['flags'] );
  56
  57                 $result = $this->getResult();
  58
  59                 $this->addTables( 'ipblocks' );
  60                 $this->addFields( array( 'ipb_auto', 'ipb_id' ) );
  61
  62                 $this->addFieldsIf( array( 'ipb_address', 'ipb_user' ), $fld_user || $fld_userid );
  63                 $this->addFieldsIf( 'ipb_by_text', $fld_by );
  64                 $this->addFieldsIf( 'ipb_by', $fld_byid );
  65                 $this->addFieldsIf( 'ipb_timestamp', $fld_timestamp );
  66                 $this->addFieldsIf( 'ipb_expiry', $fld_expiry );
  67                 $this->addFieldsIf( 'ipb_reason', $fld_reason );
  68                 $this->addFieldsIf( array( 'ipb_range_start', 'ipb_range_end' ), $fld_range );
  69                 $this->addFieldsIf( array( 'ipb_anon_only', 'ipb_create_account', 'ipb_enable_autoblock',
  70                         'ipb_block_email', 'ipb_deleted', 'ipb_allow_usertalk' ),
  71                         $fld_flags );
  72
  73                 $this->addOption( 'LIMIT', $params['limit'] + 1 );
  74                 $this->addTimestampWhereRange(
  75                         'ipb_timestamp',
  76                         $params['dir'],
  77                         $params['start'],
  78                         $params['end']
  79                 );
  80                 // Include in ORDER BY for uniqueness
  81                 $this->addWhereRange( 'ipb_id', $params['dir'], null, null );
  82
  83                 if ( !is_null( $params['continue'] ) ) {
  84                         $cont = explode( '|', $params['continue'] );
  85                         $this->dieContinueUsageIf( count( $cont ) != 2 );
  86                         $op = ( $params['dir'] == 'newer' ? '>' : '<' );
  87                         $continueTimestamp = $db->addQuotes( $db->timestamp( $cont[0] ) );
  88                         $continueId = (int)$cont[1];
  89                         $this->dieContinueUsageIf( $continueId != $cont[1] );
  90                         $this->addWhere( "ipb_timestamp $op $continueTimestamp OR " .
  91                                 "(ipb_timestamp = $continueTimestamp AND " .
  92                                 "ipb_id $op= $continueId)"
  93                         );
  94                 }
  95
  96                 if ( isset( $params['ids'] ) ) {
  97                         $this->addWhereFld( 'ipb_id', $params['ids'] );
  98                 }
  99                 if ( isset( $params['users'] ) ) {
 100                         $usernames = array();
 101                         foreach ( (array)$params['users'] as $u ) {
 102                                 $usernames[] = $this->prepareUsername( $u );
 103                         }
 104                         $this->addWhereFld( 'ipb_address', $usernames );
 105                         $this->addWhereFld( 'ipb_auto', 0 );
 106                 }
 107                 if ( isset( $params['ip'] ) ) {
 108                         $blockCIDRLimit = $this->getConfig()->get( 'BlockCIDRLimit' );
 109                         if ( IP::isIPv4( $params['ip'] ) ) {
 110                                 $type = 'IPv4';
 111                                 $cidrLimit = $blockCIDRLimit['IPv4'];
 112                                 $prefixLen = 0;
 113                         } elseif ( IP::isIPv6( $params['ip'] ) ) {
 114                                 $type = 'IPv6';
 115                                 $cidrLimit = $blockCIDRLimit['IPv6'];
 116                                 $prefixLen = 3; // IP::toHex output is prefixed with "v6-"
 117                         } else {
 118                                 $this->dieUsage( 'IP parameter is not valid', 'param_ip' );
 119                         }
 120
 121                         # Check range validity, if it's a CIDR
 122                         list( $ip, $range ) = IP::parseCIDR( $params['ip'] );
 123                         if ( $ip !== false && $range !== false && $range < $cidrLimit ) {
 124                                 $this->dieUsage(
 125                                         "$type CIDR ranges broader than /$cidrLimit are not accepted",
 126                                         'cidrtoobroad'
 127                                 );
 128                         }
 129
 130                         # Let IP::parseRange handle calculating $upper, instead of duplicating the logic here.
 131                         list( $lower, $upper ) = IP::parseRange( $params['ip'] );
 132
 133                         # Extract the common prefix to any rangeblock affecting this IP/CIDR
 134                         $prefix = substr( $lower, 0, $prefixLen + floor( $cidrLimit / 4 ) );
 135
 136                         # Fairly hard to make a malicious SQL statement out of hex characters,
 137                         # but it is good practice to add quotes
 138                         $lower = $db->addQuotes( $lower );
 139                         $upper = $db->addQuotes( $upper );
 140
 141                         $this->addWhere( array(
 142                                 'ipb_range_start' . $db->buildLike( $prefix, $db->anyString() ),
 143                                 'ipb_range_start <= ' . $lower,
 144                                 'ipb_range_end >= ' . $upper,
 145                                 'ipb_auto' => 0
 146                         ) );
 147                 }
 148
 149                 if ( !is_null( $params['show'] ) ) {
 150                         $show = array_flip( $params['show'] );
 151
 152                         /* Check for conflicting parameters. */
 153                         if ( ( isset( $show['account'] ) && isset( $show['!account'] ) )
 154                                 || ( isset( $show['ip'] ) && isset( $show['!ip'] ) )
 155                                 || ( isset( $show['range'] ) && isset( $show['!range'] ) )
 156                                 || ( isset( $show['temp'] ) && isset( $show['!temp'] ) )
 157                         ) {
 158                                 $this->dieUsageMsg( 'show' );
 159                         }
 160
 161                         $this->addWhereIf( 'ipb_user = 0', isset( $show['!account'] ) );
 162                         $this->addWhereIf( 'ipb_user != 0', isset( $show['account'] ) );
 163                         $this->addWhereIf( 'ipb_user != 0 OR ipb_range_end > ipb_range_start', isset( $show['!ip'] ) );
 164                         $this->addWhereIf( 'ipb_user = 0 AND ipb_range_end = ipb_range_start', isset( $show['ip'] ) );
 165                         $this->addWhereIf( 'ipb_expiry = ' .
 166                                 $db->addQuotes( $db->getInfinity() ), isset( $show['!temp'] ) );
 167                         $this->addWhereIf( 'ipb_expiry != ' .
 168                                 $db->addQuotes( $db->getInfinity() ), isset( $show['temp'] ) );
 169                         $this->addWhereIf( 'ipb_range_end = ipb_range_start', isset( $show['!range'] ) );
 170                         $this->addWhereIf( 'ipb_range_end > ipb_range_start', isset( $show['range'] ) );
 171                 }
 172
 173                 if ( !$this->getUser()->isAllowed( 'hideuser' ) ) {
 174                         $this->addWhereFld( 'ipb_deleted', 0 );
 175                 }
 176
 177                 // Purge expired entries on one in every 10 queries
 178                 if ( !mt_rand( 0, 10 ) ) {
 179                         Block::purgeExpired();
 180                 }
 181
 182                 $res = $this->select( __METHOD__ );
 183
 184                 $count = 0;
 185                 foreach ( $res as $row ) {
 186                         if ( ++$count > $params['limit'] ) {
 187                                 // We've had enough
 188                                 $this->setContinueEnumParameter( 'continue', "$row->ipb_timestamp|$row->ipb_id" );
 189                                 break;
 190                         }
 191                         $block = array();
 192                         if ( $fld_id ) {
 193                                 $block['id'] = $row->ipb_id;
 194                         }
 195                         if ( $fld_user && !$row->ipb_auto ) {
 196                                 $block['user'] = $row->ipb_address;
 197                         }
 198                         if ( $fld_userid && !$row->ipb_auto ) {
 199                                 $block['userid'] = $row->ipb_user;
 200                         }
 201                         if ( $fld_by ) {
 202                                 $block['by'] = $row->ipb_by_text;
 203                         }
 204                         if ( $fld_byid ) {
 205                                 $block['byid'] = $row->ipb_by;
 206                         }
 207                         if ( $fld_timestamp ) {
 208                                 $block['timestamp'] = wfTimestamp( TS_ISO_8601, $row->ipb_timestamp );
 209                         }
 210                         if ( $fld_expiry ) {
 211                                 $block['expiry'] = $wgContLang->formatExpiry( $row->ipb_expiry, TS_ISO_8601 );
 212                         }
 213                         if ( $fld_reason ) {
 214                                 $block['reason'] = $row->ipb_reason;
 215                         }
 216                         if ( $fld_range && !$row->ipb_auto ) {
 217                                 $block['rangestart'] = IP::formatHex( $row->ipb_range_start );
 218                                 $block['rangeend'] = IP::formatHex( $row->ipb_range_end );
 219                         }
 220                         if ( $fld_flags ) {
 221                                 // For clarity, these flags use the same names as their action=block counterparts
 222                                 if ( $row->ipb_auto ) {
 223                                         $block['automatic'] = '';
 224                                 }
 225                                 if ( $row->ipb_anon_only ) {
 226                                         $block['anononly'] = '';
 227                                 }
 228                                 if ( $row->ipb_create_account ) {
 229                                         $block['nocreate'] = '';
 230                                 }
 231                                 if ( $row->ipb_enable_autoblock ) {
 232                                         $block['autoblock'] = '';
 233                                 }
 234                                 if ( $row->ipb_block_email ) {
 235                                         $block['noemail'] = '';
 236                                 }
 237                                 if ( $row->ipb_deleted ) {
 238                                         $block['hidden'] = '';
 239                                 }
 240                                 if ( $row->ipb_allow_usertalk ) {
 241                                         $block['allowusertalk'] = '';
 242                                 }
 243                         }
 244                         $fit = $result->addValue( array( 'query', $this->getModuleName() ), null, $block );
 245                         if ( !$fit ) {
 246                                 $this->setContinueEnumParameter( 'continue', "$row->ipb_timestamp|$row->ipb_id" );
 247                                 break;
 248                         }
 249                 }
 250                 $result->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'block' );
 251         }
 252
 253         protected function prepareUsername( $user ) {
 254                 if ( !$user ) {
 255                         $this->dieUsage( 'User parameter may not be empty', 'param_user' );
 256                 }
 257                 $name = User::isIP( $user )
 258                         ? $user
 259                         : User::getCanonicalName( $user, 'valid' );
 260                 if ( $name === false ) {
 261                         $this->dieUsage( "User name {$user} is not valid", 'param_user' );
 262                 }
 263                 return $name;
 264         }
 265
 266         public function getAllowedParams() {
 267                 $blockCIDRLimit = $this->getConfig()->get( 'BlockCIDRLimit' );
 268
 269                 return array(
 270                         'start' => array(
 271                                 ApiBase::PARAM_TYPE => 'timestamp'
 272                         ),
 273                         'end' => array(
 274                                 ApiBase::PARAM_TYPE => 'timestamp',
 275                         ),
 276                         'dir' => array(
 277                                 ApiBase::PARAM_TYPE => array(
 278                                         'newer',
 279                                         'older'
 280                                 ),
 281                                 ApiBase::PARAM_DFLT => 'older',
 282                                 ApiBase::PARAM_HELP_MSG => 'api-help-param-direction',
 283                         ),
 284                         'ids' => array(
 285                                 ApiBase::PARAM_TYPE => 'integer',
 286                                 ApiBase::PARAM_ISMULTI => true
 287                         ),
 288                         'users' => array(
 289                                 ApiBase::PARAM_ISMULTI => true
 290                         ),
 291                         'ip' => array(
 292                                 ApiBase::PARAM_HELP_MSG => array(
 293                                         'apihelp-query+blocks-param-ip',
 294                                         $blockCIDRLimit['IPv4'],
 295                                         $blockCIDRLimit['IPv6'],
 296                                 ),
 297                         ),
 298                         'limit' => array(
 299                                 ApiBase::PARAM_DFLT => 10,
 300                                 ApiBase::PARAM_TYPE => 'limit',
 301                                 ApiBase::PARAM_MIN => 1,
 302                                 ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
 303                                 ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 304                         ),
 305                         'prop' => array(
 306                                 ApiBase::PARAM_DFLT => 'id|user|by|timestamp|expiry|reason|flags',
 307                                 ApiBase::PARAM_TYPE => array(
 308                                         'id',
 309                                         'user',
 310                                         'userid',
 311                                         'by',
 312                                         'byid',
 313                                         'timestamp',
 314                                         'expiry',
 315                                         'reason',
 316                                         'range',
 317                                         'flags'
 318                                 ),
 319                                 ApiBase::PARAM_ISMULTI => true
 320                         ),
 321                         'show' => array(
 322                                 ApiBase::PARAM_TYPE => array(
 323                                         'account',
 324                                         '!account',
 325                                         'temp',
 326                                         '!temp',
 327                                         'ip',
 328                                         '!ip',
 329                                         'range',
 330                                         '!range',
 331                                 ),
 332                                 ApiBase::PARAM_ISMULTI => true
 333                         ),
 334                         'continue' => array(
 335                                 ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
 336                         ),
 337                 );
 338         }
 339
 340         protected function getExamplesMessages() {
 341                 return array(
 342                         'action=query&list=blocks'
 343                                 => 'apihelp-query+blocks-example-simple',
 344                         'action=query&list=blocks&bkusers=Alice|Bob'
 345                                 => 'apihelp-query+blocks-example-users',
 346                 );
 347         }
 348
 349         public function getHelpUrls() {
 350                 return 'https://www.mediawiki.org/wiki/API:Blocks';
 351         }
 352 }