includes/api/ApiQueryAllimages.php

   1 <?php
   2
   3 /*
   4  * Created on Mar 16, 2008
   5  *
   6  * API for MediaWiki 1.12+
   7  *
   8  * Copyright (C) 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  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  24  * http://www.gnu.org/copyleft/gpl.html
  25  */
  26
  27 if (!defined('MEDIAWIKI')) {
  28         // Eclipse helper - will be ignored in production
  29         require_once ('ApiQueryBase.php');
  30 }
  31
  32 /**
  33  * Query module to enumerate all available pages.
  34  *
  35  * @addtogroup API
  36  */
  37 class ApiQueryAllimages extends ApiQueryGeneratorBase {
  38
  39         public function __construct($query, $moduleName) {
  40                 parent :: __construct($query, $moduleName, 'ai');
  41         }
  42
  43         public function execute() {
  44                 $this->run();
  45         }
  46
  47         public function executeGenerator($resultPageSet) {
  48                 if ($resultPageSet->isResolvingRedirects())
  49                         $this->dieUsage('Use "gaifilterredir=nonredirects" option instead of "redirects" when using allpages as a generator', 'params');
  50
  51                 $this->run($resultPageSet);
  52         }
  53
  54         private function run($resultPageSet = null) {
  55
  56                 $db = $this->getDB();
  57
  58                 $params = $this->extractRequestParams();
  59
  60                 // Image filters
  61                 if (!is_null($params['from']))
  62                         $this->addWhere('img_name>=' . $db->addQuotes(ApiQueryBase :: titleToKey($params['from'])));
  63                 if (isset ($params['prefix']))
  64                         $this->addWhere("img_name LIKE '" . $db->escapeLike(ApiQueryBase :: titleToKey($params['prefix'])) . "%'");
  65
  66                 if (isset ($params['minsize'])) {
  67                         $this->addWhere('img_size>=' . intval($params['minsize']));
  68                 }
  69
  70                 if (isset ($params['maxsize'])) {
  71                         $this->addWhere('img_size<=' . intval($params['maxsize']));
  72                 }
  73
  74                 $sha1 = false;
  75                 if( isset( $params['sha1'] ) ) {
  76                         $sha1 = wfBaseConvert( $params['sha1'], 16, 36, 31 );
  77                 } elseif( isset( $params['sha1base36'] ) ) {
  78                         $sha1 = $params['sha1base36'];
  79                 }
  80                 if( $sha1 ) {
  81                         $this->addWhere( 'img_sha1=' . $db->addQuotes( $sha1 ) );
  82                 }
  83
  84                 $this->addTables('image');
  85
  86                 $this->addFields(array (
  87                                 'img_name',
  88                                 'img_size',
  89                                 'img_width',
  90                                 'img_height',
  91                                 'img_major_mime',
  92                                 'img_minor_mime',
  93                                 'img_timestamp',
  94                                 'img_sha1',
  95                 ));
  96
  97                 $limit = $params['limit'];
  98                 $this->addOption('LIMIT', $limit+1);
  99                 $this->addOption('ORDER BY', 'img_name' .
 100                                                 ($params['dir'] == 'descending' ? ' DESC' : ''));
 101
 102                 $res = $this->select(__METHOD__);
 103
 104                 $data = array ();
 105                 $count = 0;
 106                 while ($row = $db->fetchObject($res)) {
 107                         if (++ $count > $limit) {
 108                                 // We've reached the one extra which shows that there are additional pages to be had. Stop here...
 109                                 // TODO: Security issue - if the user has no right to view next title, it will still be shown
 110                                 $this->setContinueEnumParameter('from', ApiQueryBase :: keyToTitle($row->img_name));
 111                                 break;
 112                         }
 113
 114                         if (is_null($resultPageSet)) {
 115                                 $file = wfLocalFile( $row->img_name );
 116                                 $item = array(
 117                                         'name' => $row->img_name,
 118                                         'size' => $file->getSize(),
 119                                         'width' => $file->getWidth(),
 120                                         'height' => $file->getHeight(),
 121                                         'mime' => $row->img_major_mime . '/' . $row->img_minor_mime,
 122                                         'sha1' => wfBaseConvert( $file->getSha1(), 36, 16, 31 ),
 123                                         'timestamp' => wfTimestamp(TS_ISO_8601, $file->getTimestamp()),
 124                                         'url' => $file->getFullUrl()
 125                                 );
 126                         } else {
 127                                 $data[] = Title::makeTitle( NS_IMAGE, $row->img_name );
 128                         }
 129                 }
 130                 $db->freeResult($res);
 131
 132                 if (is_null($resultPageSet)) {
 133                         $result = $this->getResult();
 134                         $result->setIndexedTagName($data, 'img');
 135                         $result->addValue('query', $this->getModuleName(), $data);
 136                 } else {
 137                         $resultPageSet->populateFromTitles( $data );
 138                 }
 139         }
 140
 141         public function getAllowedParams() {
 142                 global $wgRestrictionTypes, $wgRestrictionLevels;
 143
 144                 return array (
 145                         'from' => null,
 146                         'prefix' => null,
 147                         'minsize' => array (
 148                                 ApiBase :: PARAM_TYPE => 'integer',
 149                         ),
 150                         'maxsize' => array (
 151                                 ApiBase :: PARAM_TYPE => 'integer',
 152                         ),
 153                         'limit' => array (
 154                                 ApiBase :: PARAM_DFLT => 10,
 155                                 ApiBase :: PARAM_TYPE => 'limit',
 156                                 ApiBase :: PARAM_MIN => 1,
 157                                 ApiBase :: PARAM_MAX => ApiBase :: LIMIT_BIG1,
 158                                 ApiBase :: PARAM_MAX2 => ApiBase :: LIMIT_BIG2
 159                         ),
 160                         'dir' => array (
 161                                 ApiBase :: PARAM_DFLT => 'ascending',
 162                                 ApiBase :: PARAM_TYPE => array (
 163                                         'ascending',
 164                                         'descending'
 165                                 )
 166                         ),
 167                         'sha1' => null,
 168                         'sha1base36' => null,
 169                 );
 170         }
 171
 172         public function getParamDescription() {
 173                 return array (
 174                         'from' => 'The image title to start enumerating from.',
 175                         'prefix' => 'Search for all image titles that begin with this value.',
 176                         'dir' => 'The direction in which to list',
 177                         'minsize' => 'Limit to images with at least this many bytes',
 178                         'maxsize' => 'Limit to images with at most this many bytes',
 179                         'limit' => 'How many total pages to return.',
 180                         'sha1' => 'SHA1 hash of image',
 181                         'sha1base36' => 'SHA1 hash of image in base 36 (used in MediaWiki)'
 182                 );
 183         }
 184
 185         public function getDescription() {
 186                 return 'Enumerate all images sequentially';
 187         }
 188
 189         protected function getExamples() {
 190                 return array (
 191                         'Simple Use',
 192                         ' Show a list of images starting at the letter "B"',
 193                         '  api.php?action=query&list=allimages&apfrom=B',
 194                         'Using as Generator',
 195                         ' Show info about 4 images starting at the letter "T"',
 196                         '  api.php?action=query&generator=allimages&gailimit=4&gaifrom=T&prop=imageinfo',
 197                 );
 198         }
 199
 200         public function getVersion() {
 201                 return __CLASS__ . ': $Id$';
 202         }
 203 }
 204