includes/api/ApiQueryFilearchive.php

   1 <?php
   2 /**
   3  * API for MediaWiki 1.12+
   4  *
   5  * Created on May 10, 2010
   6  *
   7  * Copyright © 2010 Sam Reed
   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 deleted files.
  31  *
  32  * @ingroup API
  33  */
  34 class ApiQueryFilearchive extends ApiQueryBase {
  35
  36         public function __construct( ApiQuery $query, $moduleName ) {
  37                 parent::__construct( $query, $moduleName, 'fa' );
  38         }
  39
  40         public function execute() {
  41                 $user = $this->getUser();
  42                 // Before doing anything at all, let's check permissions
  43                 if ( !$user->isAllowed( 'deletedhistory' ) ) {
  44                         $this->dieUsage(
  45                                 'You don\'t have permission to view deleted file information',
  46                                 'permissiondenied'
  47                         );
  48                 }
  49
  50                 $db = $this->getDB();
  51
  52                 $params = $this->extractRequestParams();
  53
  54                 $prop = array_flip( $params['prop'] );
  55                 $fld_sha1 = isset( $prop['sha1'] );
  56                 $fld_timestamp = isset( $prop['timestamp'] );
  57                 $fld_user = isset( $prop['user'] );
  58                 $fld_size = isset( $prop['size'] );
  59                 $fld_dimensions = isset( $prop['dimensions'] );
  60                 $fld_description = isset( $prop['description'] ) || isset( $prop['parseddescription'] );
  61                 $fld_mime = isset( $prop['mime'] );
  62                 $fld_mediatype = isset( $prop['mediatype'] );
  63                 $fld_metadata = isset( $prop['metadata'] );
  64                 $fld_bitdepth = isset( $prop['bitdepth'] );
  65                 $fld_archivename = isset( $prop['archivename'] );
  66
  67                 $this->addTables( 'filearchive' );
  68
  69                 $this->addFields( ArchivedFile::selectFields() );
  70                 $this->addFields( array( 'fa_id', 'fa_name', 'fa_timestamp', 'fa_deleted' ) );
  71                 $this->addFieldsIf( 'fa_sha1', $fld_sha1 );
  72                 $this->addFieldsIf( array( 'fa_user', 'fa_user_text' ), $fld_user );
  73                 $this->addFieldsIf( array( 'fa_height', 'fa_width', 'fa_size' ), $fld_dimensions || $fld_size );
  74                 $this->addFieldsIf( 'fa_description', $fld_description );
  75                 $this->addFieldsIf( array( 'fa_major_mime', 'fa_minor_mime' ), $fld_mime );
  76                 $this->addFieldsIf( 'fa_media_type', $fld_mediatype );
  77                 $this->addFieldsIf( 'fa_metadata', $fld_metadata );
  78                 $this->addFieldsIf( 'fa_bits', $fld_bitdepth );
  79                 $this->addFieldsIf( 'fa_archive_name', $fld_archivename );
  80
  81                 if ( !is_null( $params['continue'] ) ) {
  82                         $cont = explode( '|', $params['continue'] );
  83                         $this->dieContinueUsageIf( count( $cont ) != 3 );
  84                         $op = $params['dir'] == 'descending' ? '<' : '>';
  85                         $cont_from = $db->addQuotes( $cont[0] );
  86                         $cont_timestamp = $db->addQuotes( $db->timestamp( $cont[1] ) );
  87                         $cont_id = (int)$cont[2];
  88                         $this->dieContinueUsageIf( $cont[2] !== (string)$cont_id );
  89                         $this->addWhere( "fa_name $op $cont_from OR " .
  90                                 "(fa_name = $cont_from AND " .
  91                                 "(fa_timestamp $op $cont_timestamp OR " .
  92                                 "(fa_timestamp = $cont_timestamp AND " .
  93                                 "fa_id $op= $cont_id )))"
  94                         );
  95                 }
  96
  97                 // Image filters
  98                 $dir = ( $params['dir'] == 'descending' ? 'older' : 'newer' );
  99                 $from = ( $params['from'] === null ? null : $this->titlePartToKey( $params['from'], NS_FILE ) );
 100                 $to = ( $params['to'] === null ? null : $this->titlePartToKey( $params['to'], NS_FILE ) );
 101                 $this->addWhereRange( 'fa_name', $dir, $from, $to );
 102                 if ( isset( $params['prefix'] ) ) {
 103                         $this->addWhere( 'fa_name' . $db->buildLike(
 104                                 $this->titlePartToKey( $params['prefix'], NS_FILE ),
 105                                 $db->anyString() ) );
 106                 }
 107
 108                 $sha1Set = isset( $params['sha1'] );
 109                 $sha1base36Set = isset( $params['sha1base36'] );
 110                 if ( $sha1Set || $sha1base36Set ) {
 111                         $sha1 = false;
 112                         if ( $sha1Set ) {
 113                                 $sha1 = strtolower( $params['sha1'] );
 114                                 if ( !$this->validateSha1Hash( $sha1 ) ) {
 115                                         $this->dieUsage( 'The SHA1 hash provided is not valid', 'invalidsha1hash' );
 116                                 }
 117                                 $sha1 = wfBaseConvert( $sha1, 16, 36, 31 );
 118                         } elseif ( $sha1base36Set ) {
 119                                 $sha1 = strtolower( $params['sha1base36'] );
 120                                 if ( !$this->validateSha1Base36Hash( $sha1 ) ) {
 121                                         $this->dieUsage( 'The SHA1Base36 hash provided is not valid', 'invalidsha1base36hash' );
 122                                 }
 123                         }
 124                         if ( $sha1 ) {
 125                                 $this->addWhereFld( 'fa_sha1', $sha1 );
 126                         }
 127                 }
 128
 129                 // Exclude files this user can't view.
 130                 if ( !$user->isAllowed( 'deletedtext' ) ) {
 131                         $bitmask = File::DELETED_FILE;
 132                 } elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
 133                         $bitmask = File::DELETED_FILE | File::DELETED_RESTRICTED;
 134                 } else {
 135                         $bitmask = 0;
 136                 }
 137                 if ( $bitmask ) {
 138                         $this->addWhere( $this->getDB()->bitAnd( 'fa_deleted', $bitmask ) . " != $bitmask" );
 139                 }
 140
 141                 $limit = $params['limit'];
 142                 $this->addOption( 'LIMIT', $limit + 1 );
 143                 $sort = ( $params['dir'] == 'descending' ? ' DESC' : '' );
 144                 $this->addOption( 'ORDER BY', array(
 145                         'fa_name' . $sort,
 146                         'fa_timestamp' . $sort,
 147                         'fa_id' . $sort,
 148                 ) );
 149
 150                 $res = $this->select( __METHOD__ );
 151
 152                 $count = 0;
 153                 $result = $this->getResult();
 154                 foreach ( $res as $row ) {
 155                         if ( ++$count > $limit ) {
 156                                 // We've reached the one extra which shows that there are
 157                                 // additional pages to be had. Stop here...
 158                                 $this->setContinueEnumParameter(
 159                                         'continue', "$row->fa_name|$row->fa_timestamp|$row->fa_id"
 160                                 );
 161                                 break;
 162                         }
 163
 164                         $file = array();
 165                         $file['id'] = $row->fa_id;
 166                         $file['name'] = $row->fa_name;
 167                         $title = Title::makeTitle( NS_FILE, $row->fa_name );
 168                         self::addTitleInfo( $file, $title );
 169
 170                         if ( $fld_description &&
 171                                 Revision::userCanBitfield( $row->fa_deleted, File::DELETED_COMMENT, $user )
 172                         ) {
 173                                 $file['description'] = $row->fa_description;
 174                                 if ( isset( $prop['parseddescription'] ) ) {
 175                                         $file['parseddescription'] = Linker::formatComment(
 176                                                 $row->fa_description, $title );
 177                                 }
 178                         }
 179                         if ( $fld_user &&
 180                                 Revision::userCanBitfield( $row->fa_deleted, File::DELETED_USER, $user )
 181                         ) {
 182                                 $file['userid'] = $row->fa_user;
 183                                 $file['user'] = $row->fa_user_text;
 184                         }
 185                         if ( $fld_sha1 ) {
 186                                 $file['sha1'] = wfBaseConvert( $row->fa_sha1, 36, 16, 40 );
 187                         }
 188                         if ( $fld_timestamp ) {
 189                                 $file['timestamp'] = wfTimestamp( TS_ISO_8601, $row->fa_timestamp );
 190                         }
 191                         if ( $fld_size || $fld_dimensions ) {
 192                                 $file['size'] = $row->fa_size;
 193
 194                                 $pageCount = ArchivedFile::newFromRow( $row )->pageCount();
 195                                 if ( $pageCount !== false ) {
 196                                         $file['pagecount'] = $pageCount;
 197                                 }
 198
 199                                 $file['height'] = $row->fa_height;
 200                                 $file['width'] = $row->fa_width;
 201                         }
 202                         if ( $fld_mediatype ) {
 203                                 $file['mediatype'] = $row->fa_media_type;
 204                         }
 205                         if ( $fld_metadata ) {
 206                                 $file['metadata'] = $row->fa_metadata
 207                                         ? ApiQueryImageInfo::processMetaData( unserialize( $row->fa_metadata ), $result )
 208                                         : null;
 209                         }
 210                         if ( $fld_bitdepth ) {
 211                                 $file['bitdepth'] = $row->fa_bits;
 212                         }
 213                         if ( $fld_mime ) {
 214                                 $file['mime'] = "$row->fa_major_mime/$row->fa_minor_mime";
 215                         }
 216                         if ( $fld_archivename && !is_null( $row->fa_archive_name ) ) {
 217                                 $file['archivename'] = $row->fa_archive_name;
 218                         }
 219
 220                         if ( $row->fa_deleted & File::DELETED_FILE ) {
 221                                 $file['filehidden'] = '';
 222                         }
 223                         if ( $row->fa_deleted & File::DELETED_COMMENT ) {
 224                                 $file['commenthidden'] = '';
 225                         }
 226                         if ( $row->fa_deleted & File::DELETED_USER ) {
 227                                 $file['userhidden'] = '';
 228                         }
 229                         if ( $row->fa_deleted & File::DELETED_RESTRICTED ) {
 230                                 // This file is deleted for normal admins
 231                                 $file['suppressed'] = '';
 232                         }
 233
 234                         $fit = $result->addValue( array( 'query', $this->getModuleName() ), null, $file );
 235                         if ( !$fit ) {
 236                                 $this->setContinueEnumParameter(
 237                                         'continue', "$row->fa_name|$row->fa_timestamp|$row->fa_id"
 238                                 );
 239                                 break;
 240                         }
 241                 }
 242
 243                 $result->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'fa' );
 244         }
 245
 246         public function getAllowedParams() {
 247                 return array(
 248                         'from' => null,
 249                         'to' => null,
 250                         'prefix' => null,
 251                         'dir' => array(
 252                                 ApiBase::PARAM_DFLT => 'ascending',
 253                                 ApiBase::PARAM_TYPE => array(
 254                                         'ascending',
 255                                         'descending'
 256                                 )
 257                         ),
 258                         'sha1' => null,
 259                         'sha1base36' => null,
 260                         'prop' => array(
 261                                 ApiBase::PARAM_DFLT => 'timestamp',
 262                                 ApiBase::PARAM_ISMULTI => true,
 263                                 ApiBase::PARAM_TYPE => array(
 264                                         'sha1',
 265                                         'timestamp',
 266                                         'user',
 267                                         'size',
 268                                         'dimensions',
 269                                         'description',
 270                                         'parseddescription',
 271                                         'mime',
 272                                         'mediatype',
 273                                         'metadata',
 274                                         'bitdepth',
 275                                         'archivename',
 276                                 ),
 277                         ),
 278                         'limit' => array(
 279                                 ApiBase::PARAM_DFLT => 10,
 280                                 ApiBase::PARAM_TYPE => 'limit',
 281                                 ApiBase::PARAM_MIN => 1,
 282                                 ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
 283                                 ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 284                         ),
 285                         'continue' => array(
 286                                 ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
 287                         ),
 288                 );
 289         }
 290
 291         protected function getExamplesMessages() {
 292                 return array(
 293                         'action=query&list=filearchive'
 294                                 => 'apihelp-query+filearchive-example-simple',
 295                 );
 296         }
 297
 298         public function getHelpUrls() {
 299                 return 'https://www.mediawiki.org/wiki/API:Filearchive';
 300         }
 301 }