includes/api/ApiQueryAllImages.php

   1 <?php
   2
   3 /**
   4  * API for MediaWiki 1.12+
   5  *
   6  * Created on Mar 16, 2008
   7  *
   8  * Copyright © 2008 Vasiliev Victor vasilvv@gmail.com,
   9  * based on ApiQueryAllPages.php
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License along
  22  * with this program; if not, write to the Free Software Foundation, Inc.,
  23  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  24  * http://www.gnu.org/copyleft/gpl.html
  25  *
  26  * @file
  27  */
  28
  29 /**
  30  * Query module to enumerate all available pages.
  31  *
  32  * @ingroup API
  33  */
  34 class ApiQueryAllImages extends ApiQueryGeneratorBase {
  35         protected $mRepo;
  36
  37         public function __construct( ApiQuery $query, $moduleName ) {
  38                 parent::__construct( $query, $moduleName, 'ai' );
  39                 $this->mRepo = RepoGroup::singleton()->getLocalRepo();
  40         }
  41
  42         /**
  43          * Override parent method to make sure the repo's DB is used
  44          * which may not necessarily be the same as the local DB.
  45          *
  46          * TODO: allow querying non-local repos.
  47          * @return IDatabase
  48          */
  49         protected function getDB() {
  50                 return $this->mRepo->getReplicaDB();
  51         }
  52
  53         public function execute() {
  54                 $this->run();
  55         }
  56
  57         public function getCacheMode( $params ) {
  58                 return 'public';
  59         }
  60
  61         /**
  62          * @param ApiPageSet $resultPageSet
  63          * @return void
  64          */
  65         public function executeGenerator( $resultPageSet ) {
  66                 if ( $resultPageSet->isResolvingRedirects() ) {
  67                         $this->dieWithError( 'apierror-allimages-redirect', 'invalidparammix' );
  68                 }
  69
  70                 $this->run( $resultPageSet );
  71         }
  72
  73         /**
  74          * @param ApiPageSet $resultPageSet
  75          * @return void
  76          */
  77         private function run( $resultPageSet = null ) {
  78                 $repo = $this->mRepo;
  79                 if ( !$repo instanceof LocalRepo ) {
  80                         $this->dieWithError( 'apierror-unsupportedrepo' );
  81                 }
  82
  83                 $prefix = $this->getModulePrefix();
  84
  85                 $db = $this->getDB();
  86
  87                 $params = $this->extractRequestParams();
  88
  89                 // Table and return fields
  90                 $this->addTables( 'image' );
  91
  92                 $prop = array_flip( $params['prop'] );
  93                 $this->addFields( LocalFile::selectFields() );
  94
  95                 $ascendingOrder = true;
  96                 if ( $params['dir'] == 'descending' || $params['dir'] == 'older' ) {
  97                         $ascendingOrder = false;
  98                 }
  99
 100                 if ( $params['sort'] == 'name' ) {
 101                         // Check mutually exclusive params
 102                         $disallowed = [ 'start', 'end', 'user' ];
 103                         foreach ( $disallowed as $pname ) {
 104                                 if ( isset( $params[$pname] ) ) {
 105                                         $this->dieWithError(
 106                                                 [
 107                                                         'apierror-invalidparammix-mustusewith',
 108                                                         "{$prefix}{$pname}",
 109                                                         "{$prefix}sort=timestamp"
 110                                                 ],
 111                                                 'invalidparammix'
 112                                         );
 113                                 }
 114                         }
 115                         if ( $params['filterbots'] != 'all' ) {
 116                                 $this->dieWithError(
 117                                         [
 118                                                 'apierror-invalidparammix-mustusewith',
 119                                                 "{$prefix}filterbots",
 120                                                 "{$prefix}sort=timestamp"
 121                                         ],
 122                                         'invalidparammix'
 123                                 );
 124                         }
 125
 126                         // Pagination
 127                         if ( !is_null( $params['continue'] ) ) {
 128                                 $cont = explode( '|', $params['continue'] );
 129                                 $this->dieContinueUsageIf( count( $cont ) != 1 );
 130                                 $op = ( $ascendingOrder ? '>' : '<' );
 131                                 $continueFrom = $db->addQuotes( $cont[0] );
 132                                 $this->addWhere( "img_name $op= $continueFrom" );
 133                         }
 134
 135                         // Image filters
 136                         $from = ( $params['from'] === null ? null : $this->titlePartToKey( $params['from'], NS_FILE ) );
 137                         $to = ( $params['to'] === null ? null : $this->titlePartToKey( $params['to'], NS_FILE ) );
 138                         $this->addWhereRange( 'img_name', ( $ascendingOrder ? 'newer' : 'older' ), $from, $to );
 139
 140                         if ( isset( $params['prefix'] ) ) {
 141                                 $this->addWhere( 'img_name' . $db->buildLike(
 142                                         $this->titlePartToKey( $params['prefix'], NS_FILE ),
 143                                         $db->anyString() ) );
 144                         }
 145                 } else {
 146                         // Check mutually exclusive params
 147                         $disallowed = [ 'from', 'to', 'prefix' ];
 148                         foreach ( $disallowed as $pname ) {
 149                                 if ( isset( $params[$pname] ) ) {
 150                                         $this->dieWithError(
 151                                                 [
 152                                                         'apierror-invalidparammix-mustusewith',
 153                                                         "{$prefix}{$pname}",
 154                                                         "{$prefix}sort=name"
 155                                                 ],
 156                                                 'invalidparammix'
 157                                         );
 158                                 }
 159                         }
 160                         if ( !is_null( $params['user'] ) && $params['filterbots'] != 'all' ) {
 161                                 // Since filterbots checks if each user has the bot right, it
 162                                 // doesn't make sense to use it with user
 163                                 $this->dieWithError(
 164                                         [ 'apierror-invalidparammix-cannotusewith', "{$prefix}user", "{$prefix}filterbots" ]
 165                                 );
 166                         }
 167
 168                         // Pagination
 169                         $this->addTimestampWhereRange(
 170                                 'img_timestamp',
 171                                 $ascendingOrder ? 'newer' : 'older',
 172                                 $params['start'],
 173                                 $params['end']
 174                         );
 175                         // Include in ORDER BY for uniqueness
 176                         $this->addWhereRange( 'img_name', $ascendingOrder ? 'newer' : 'older', null, null );
 177
 178                         if ( !is_null( $params['continue'] ) ) {
 179                                 $cont = explode( '|', $params['continue'] );
 180                                 $this->dieContinueUsageIf( count( $cont ) != 2 );
 181                                 $op = ( $ascendingOrder ? '>' : '<' );
 182                                 $continueTimestamp = $db->addQuotes( $db->timestamp( $cont[0] ) );
 183                                 $continueName = $db->addQuotes( $cont[1] );
 184                                 $this->addWhere( "img_timestamp $op $continueTimestamp OR " .
 185                                         "(img_timestamp = $continueTimestamp AND " .
 186                                         "img_name $op= $continueName)"
 187                                 );
 188                         }
 189
 190                         // Image filters
 191                         if ( !is_null( $params['user'] ) ) {
 192                                 $this->addWhereFld( 'img_user_text', $params['user'] );
 193                         }
 194                         if ( $params['filterbots'] != 'all' ) {
 195                                 $this->addTables( 'user_groups' );
 196                                 $this->addJoinConds( [ 'user_groups' => [
 197                                         'LEFT JOIN',
 198                                         [
 199                                                 'ug_group' => User::getGroupsWithPermission( 'bot' ),
 200                                                 'ug_user = img_user'
 201                                         ]
 202                                 ] ] );
 203                                 $groupCond = ( $params['filterbots'] == 'nobots' ? 'NULL' : 'NOT NULL' );
 204                                 $this->addWhere( "ug_group IS $groupCond" );
 205                         }
 206                 }
 207
 208                 // Filters not depending on sort
 209                 if ( isset( $params['minsize'] ) ) {
 210                         $this->addWhere( 'img_size>=' . intval( $params['minsize'] ) );
 211                 }
 212
 213                 if ( isset( $params['maxsize'] ) ) {
 214                         $this->addWhere( 'img_size<=' . intval( $params['maxsize'] ) );
 215                 }
 216
 217                 $sha1 = false;
 218                 if ( isset( $params['sha1'] ) ) {
 219                         $sha1 = strtolower( $params['sha1'] );
 220                         if ( !$this->validateSha1Hash( $sha1 ) ) {
 221                                 $this->dieWithError( 'apierror-invalidsha1hash' );
 222                         }
 223                         $sha1 = Wikimedia\base_convert( $sha1, 16, 36, 31 );
 224                 } elseif ( isset( $params['sha1base36'] ) ) {
 225                         $sha1 = strtolower( $params['sha1base36'] );
 226                         if ( !$this->validateSha1Base36Hash( $sha1 ) ) {
 227                                 $this->dieWithError( 'apierror-invalidsha1base36hash' );
 228                         }
 229                 }
 230                 if ( $sha1 ) {
 231                         $this->addWhereFld( 'img_sha1', $sha1 );
 232                 }
 233
 234                 if ( !is_null( $params['mime'] ) ) {
 235                         if ( $this->getConfig()->get( 'MiserMode' ) ) {
 236                                 $this->dieWithError( 'apierror-mimesearchdisabled' );
 237                         }
 238
 239                         $mimeConds = [];
 240                         foreach ( $params['mime'] as $mime ) {
 241                                 list( $major, $minor ) = File::splitMime( $mime );
 242                                 $mimeConds[] = $db->makeList(
 243                                         [
 244                                                 'img_major_mime' => $major,
 245                                                 'img_minor_mime' => $minor,
 246                                         ],
 247                                         LIST_AND
 248                                 );
 249                         }
 250                         // safeguard against internal_api_error_DBQueryError
 251                         if ( count( $mimeConds ) > 0 ) {
 252                                 $this->addWhere( $db->makeList( $mimeConds, LIST_OR ) );
 253                         } else {
 254                                 // no MIME types, no files
 255                                 $this->getResult()->addValue( 'query', $this->getModuleName(), [] );
 256                                 return;
 257                         }
 258                 }
 259
 260                 $limit = $params['limit'];
 261                 $this->addOption( 'LIMIT', $limit + 1 );
 262                 $sortFlag = '';
 263                 if ( !$ascendingOrder ) {
 264                         $sortFlag = ' DESC';
 265                 }
 266                 if ( $params['sort'] == 'timestamp' ) {
 267                         $this->addOption( 'ORDER BY', 'img_timestamp' . $sortFlag );
 268                         if ( !is_null( $params['user'] ) ) {
 269                                 $this->addOption( 'USE INDEX', [ 'image' => 'img_usertext_timestamp' ] );
 270                         } else {
 271                                 $this->addOption( 'USE INDEX', [ 'image' => 'img_timestamp' ] );
 272                         }
 273                 } else {
 274                         $this->addOption( 'ORDER BY', 'img_name' . $sortFlag );
 275                 }
 276
 277                 $res = $this->select( __METHOD__ );
 278
 279                 $titles = [];
 280                 $count = 0;
 281                 $result = $this->getResult();
 282                 foreach ( $res as $row ) {
 283                         if ( ++$count > $limit ) {
 284                                 // We've reached the one extra which shows that there are
 285                                 // additional pages to be had. Stop here...
 286                                 if ( $params['sort'] == 'name' ) {
 287                                         $this->setContinueEnumParameter( 'continue', $row->img_name );
 288                                 } else {
 289                                         $this->setContinueEnumParameter( 'continue', "$row->img_timestamp|$row->img_name" );
 290                                 }
 291                                 break;
 292                         }
 293
 294                         if ( is_null( $resultPageSet ) ) {
 295                                 $file = $repo->newFileFromRow( $row );
 296                                 $info = array_merge( [ 'name' => $row->img_name ],
 297                                         ApiQueryImageInfo::getInfo( $file, $prop, $result ) );
 298                                 self::addTitleInfo( $info, $file->getTitle() );
 299
 300                                 $fit = $result->addValue( [ 'query', $this->getModuleName() ], null, $info );
 301                                 if ( !$fit ) {
 302                                         if ( $params['sort'] == 'name' ) {
 303                                                 $this->setContinueEnumParameter( 'continue', $row->img_name );
 304                                         } else {
 305                                                 $this->setContinueEnumParameter( 'continue', "$row->img_timestamp|$row->img_name" );
 306                                         }
 307                                         break;
 308                                 }
 309                         } else {
 310                                 $titles[] = Title::makeTitle( NS_FILE, $row->img_name );
 311                         }
 312                 }
 313
 314                 if ( is_null( $resultPageSet ) ) {
 315                         $result->addIndexedTagName( [ 'query', $this->getModuleName() ], 'img' );
 316                 } else {
 317                         $resultPageSet->populateFromTitles( $titles );
 318                 }
 319         }
 320
 321         public function getAllowedParams() {
 322                 $ret = [
 323                         'sort' => [
 324                                 ApiBase::PARAM_DFLT => 'name',
 325                                 ApiBase::PARAM_TYPE => [
 326                                         'name',
 327                                         'timestamp'
 328                                 ]
 329                         ],
 330                         'dir' => [
 331                                 ApiBase::PARAM_DFLT => 'ascending',
 332                                 ApiBase::PARAM_TYPE => [
 333                                         // sort=name
 334                                         'ascending',
 335                                         'descending',
 336                                         // sort=timestamp
 337                                         'newer',
 338                                         'older'
 339                                 ]
 340                         ],
 341                         'from' => null,
 342                         'to' => null,
 343                         'continue' => [
 344                                 ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
 345                         ],
 346                         'start' => [
 347                                 ApiBase::PARAM_TYPE => 'timestamp'
 348                         ],
 349                         'end' => [
 350                                 ApiBase::PARAM_TYPE => 'timestamp'
 351                         ],
 352                         'prop' => [
 353                                 ApiBase::PARAM_TYPE => ApiQueryImageInfo::getPropertyNames( $this->propertyFilter ),
 354                                 ApiBase::PARAM_DFLT => 'timestamp|url',
 355                                 ApiBase::PARAM_ISMULTI => true,
 356                                 ApiBase::PARAM_HELP_MSG => 'apihelp-query+imageinfo-param-prop',
 357                                 ApiBase::PARAM_HELP_MSG_PER_VALUE =>
 358                                         ApiQueryImageInfo::getPropertyMessages( $this->propertyFilter ),
 359                         ],
 360                         'prefix' => null,
 361                         'minsize' => [
 362                                 ApiBase::PARAM_TYPE => 'integer',
 363                         ],
 364                         'maxsize' => [
 365                                 ApiBase::PARAM_TYPE => 'integer',
 366                         ],
 367                         'sha1' => null,
 368                         'sha1base36' => null,
 369                         'user' => [
 370                                 ApiBase::PARAM_TYPE => 'user'
 371                         ],
 372                         'filterbots' => [
 373                                 ApiBase::PARAM_DFLT => 'all',
 374                                 ApiBase::PARAM_TYPE => [
 375                                         'all',
 376                                         'bots',
 377                                         'nobots'
 378                                 ]
 379                         ],
 380                         'mime' => [
 381                                 ApiBase::PARAM_ISMULTI => true,
 382                         ],
 383                         'limit' => [
 384                                 ApiBase::PARAM_DFLT => 10,
 385                                 ApiBase::PARAM_TYPE => 'limit',
 386                                 ApiBase::PARAM_MIN => 1,
 387                                 ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
 388                                 ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 389                         ],
 390                 ];
 391
 392                 if ( $this->getConfig()->get( 'MiserMode' ) ) {
 393                         $ret['mime'][ApiBase::PARAM_HELP_MSG] = 'api-help-param-disabled-in-miser-mode';
 394                 }
 395
 396                 return $ret;
 397         }
 398
 399         private $propertyFilter = [ 'archivename', 'thumbmime', 'uploadwarning' ];
 400
 401         protected function getExamplesMessages() {
 402                 return [
 403                         'action=query&list=allimages&aifrom=B'
 404                                 => 'apihelp-query+allimages-example-B',
 405                         'action=query&list=allimages&aiprop=user|timestamp|url&' .
 406                                 'aisort=timestamp&aidir=older'
 407                                 => 'apihelp-query+allimages-example-recent',
 408                         'action=query&list=allimages&aimime=image/png|image/gif'
 409                                 => 'apihelp-query+allimages-example-mimetypes',
 410                         'action=query&generator=allimages&gailimit=4&' .
 411                                 'gaifrom=T&prop=imageinfo'
 412                                 => 'apihelp-query+allimages-example-generator',
 413                 ];
 414         }
 415
 416         public function getHelpUrls() {
 417                 return 'https://www.mediawiki.org/wiki/API:Allimages';
 418         }
 419 }