includes/api/ApiQueryInfo.php

   1 <?php
   2
   3 /*
   4  * Created on Sep 25, 2006
   5  *
   6  * API for MediaWiki 1.8+
   7  *
   8  * Copyright (C) 2006 Yuri Astrakhan <Firstname><Lastname>@gmail.com
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along
  21  * with this program; if not, write to the Free Software Foundation, Inc.,
  22  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  23  * http://www.gnu.org/copyleft/gpl.html
  24  */
  25
  26 if (!defined('MEDIAWIKI')) {
  27         // Eclipse helper - will be ignored in production
  28         require_once ('ApiQueryBase.php');
  29 }
  30
  31 /**
  32  * A query module to show basic page information.
  33  *
  34  * @addtogroup API
  35  */
  36 class ApiQueryInfo extends ApiQueryBase {
  37
  38         public function __construct($query, $moduleName) {
  39                 parent :: __construct($query, $moduleName, 'in');
  40         }
  41
  42         public function requestExtraData($pageSet) {
  43                 $pageSet->requestField('page_restrictions');
  44                 $pageSet->requestField('page_is_redirect');
  45                 $pageSet->requestField('page_is_new');
  46                 $pageSet->requestField('page_counter');
  47                 $pageSet->requestField('page_touched');
  48                 $pageSet->requestField('page_latest');
  49                 $pageSet->requestField('page_len');
  50         }
  51
  52         public function execute() {
  53
  54                 global $wgUser;
  55
  56                 $params = $this->extractRequestParams();
  57                 $fld_protection = $fld_talkid = $fld_subjectid = false;
  58                 if(!is_null($params['prop'])) {
  59                         $prop = array_flip($params['prop']);
  60                         $fld_protection = isset($prop['protection']);
  61                         $fld_talkid = isset($prop['talkid']);
  62                         $fld_subjectid = isset($prop['subjectid']);
  63                 }
  64                 if(!is_null($params['token'])) {
  65                         $token = $params['token'];
  66                         $tok_edit = $this->getTokenFlag($token, 'edit');
  67                         $tok_delete = $this->getTokenFlag($token, 'delete');
  68                         $tok_protect = $this->getTokenFlag($token, 'protect');
  69                         $tok_move = $this->getTokenFlag($token, 'move');
  70                 }
  71                 else
  72                         // Fix E_NOTICEs about unset variables
  73                         $token = $tok_edit = $tok_delete = $tok_protect = $tok_move = null;
  74
  75                 $pageSet = $this->getPageSet();
  76                 $titles = $pageSet->getGoodTitles();
  77                 $missing = $pageSet->getMissingTitles();
  78                 $result = $this->getResult();
  79
  80                 $pageRestrictions = $pageSet->getCustomField('page_restrictions');
  81                 $pageIsRedir = $pageSet->getCustomField('page_is_redirect');
  82                 $pageIsNew = $pageSet->getCustomField('page_is_new');
  83                 $pageCounter = $pageSet->getCustomField('page_counter');
  84                 $pageTouched = $pageSet->getCustomField('page_touched');
  85                 $pageLatest = $pageSet->getCustomField('page_latest');
  86                 $pageLength = $pageSet->getCustomField('page_len');
  87
  88                 $db = $this->getDB();
  89                 if ($fld_protection && !empty($titles)) {
  90                         $this->addTables('page_restrictions');
  91                         $this->addFields(array('pr_page', 'pr_type', 'pr_level', 'pr_expiry', 'pr_cascade'));
  92                         $this->addWhereFld('pr_page', array_keys($titles));
  93
  94                         $res = $this->select(__METHOD__);
  95                         while($row = $db->fetchObject($res)) {
  96                                 $a = array(
  97                                         'type' => $row->pr_type,
  98                                         'level' => $row->pr_level,
  99                                         'expiry' => Block::decodeExpiry( $row->pr_expiry, TS_ISO_8601 )
 100                                 );
 101                                 if($row->pr_cascade)
 102                                         $a['cascade'] = '';
 103                                 $protections[$row->pr_page][] = $a;
 104                         }
 105                         $db->freeResult($res);
 106
 107                         $imageIds = array();
 108                         foreach ($titles as $id => $title)
 109                                 if ($title->getNamespace() == NS_IMAGE)
 110                                         $imageIds[] = $id;
 111                         // To avoid code duplication
 112                         $cascadeTypes = array(
 113                                 array(
 114                                         'prefix' => 'tl',
 115                                         'table' => 'templatelinks',
 116                                         'ns' => 'tl_namespace',
 117                                         'title' => 'tl_title',
 118                                         'ids' => array_diff(array_keys($titles), $imageIds)
 119                                 ),
 120                                 array(
 121                                         'prefix' => 'il',
 122                                         'table' => 'imagelinks',
 123                                         'ns' => NS_IMAGE,
 124                                         'title' => 'il_to',
 125                                         'ids' => $imageIds
 126                                 )
 127                         );
 128
 129                         foreach ($cascadeTypes as $type)
 130                         {
 131                                 if (count($type['ids']) != 0) {
 132                                         $this->resetQueryParams();
 133                                         $this->addTables(array('page_restrictions', $type['table']));
 134                                         $this->addTables('page', 'page_source');
 135                                         $this->addTables('page', 'page_target');
 136                                         $this->addFields(array('pr_type', 'pr_level', 'pr_expiry',
 137                                                         'page_target.page_id AS page_target_id',
 138                                                         'page_source.page_namespace AS page_source_namespace',
 139                                                         'page_source.page_title AS page_source_title'));
 140                                         $this->addWhere(array("{$type['prefix']}_from = pr_page",
 141                                                         'page_target.page_namespace = '.$type['ns'],
 142                                                         'page_target.page_title = '.$type['title'],
 143                                                         'page_source.page_id = pr_page'
 144                                         ));
 145                                         $this->addWhereFld('pr_cascade', 1);
 146                                         $this->addWhereFld('page_target.page_id', $type['ids']);
 147
 148                                         $res = $this->select(__METHOD__);
 149                                         while($row = $db->fetchObject($res)) {
 150                                                 $source = Title::makeTitle($row->page_source_namespace, $row->page_source_title);
 151                                                 $a = array(
 152                                                         'type' => $row->pr_type,
 153                                                         'level' => $row->pr_level,
 154                                                         'expiry' => Block::decodeExpiry( $row->pr_expiry, TS_ISO_8601 ),
 155                                                         'source' => $source->getPrefixedText()
 156                                                 );
 157                                                 $protections[$row->page_target_id][] = $a;
 158                                         }
 159                                         $db->freeResult($res);
 160                                 }
 161                         }
 162                 }
 163
 164                 // We don't need to check for pt stuff if there are no nonexistent titles
 165                 if($fld_protection && !empty($missing))
 166                 {
 167                         $this->resetQueryParams();
 168                         // Construct a custom WHERE clause that matches all titles in $missing
 169                         $lb = new LinkBatch($missing);
 170                         $this->addTables('protected_titles');
 171                         $this->addFields(array('pt_title', 'pt_namespace', 'pt_create_perm', 'pt_expiry'));
 172                         $this->addWhere($lb->constructSet('pt', $db));
 173                         $res = $this->select(__METHOD__);
 174                         $prottitles = array();
 175                         while($row = $db->fetchObject($res)) {
 176                                 $prottitles[$row->pt_namespace][$row->pt_title] = array(
 177                                         'type' => 'create',
 178                                         'level' => $row->pt_create_perm,
 179                                         'expiry' => Block::decodeExpiry($row->pt_expiry, TS_ISO_8601)
 180                                 );
 181                         }
 182                         $db->freeResult($res);
 183                 }
 184
 185                 // Run the talkid/subjectid query
 186                 if($fld_talkid || $fld_subjectid)
 187                 {
 188                         $talktitles = $subjecttitles =
 189                                 $talkids = $subjectids = array();
 190                         $everything = array_merge($titles, $missing);
 191                         foreach($everything as $t)
 192                         {
 193                                 if(MWNamespace::isTalk($t->getNamespace()))
 194                                 {
 195                                         if($fld_subjectid)
 196                                                 $subjecttitles[] = $t->getSubjectPage();
 197                                 }
 198                                 else if($fld_talkid)
 199                                         $talktitles[] = $t->getTalkPage();
 200                         }
 201                         if(!empty($talktitles) || !empty($subjecttitles))
 202                         {
 203                                 // Construct a custom WHERE clause that matches
 204                                 // all titles in $talktitles and $subjecttitles
 205                                 $lb = new LinkBatch(array_merge($talktitles, $subjecttitles));
 206                                 $this->resetQueryParams();
 207                                 $this->addTables('page');
 208                                 $this->addFields(array('page_title', 'page_namespace', 'page_id'));
 209                                 $this->addWhere($lb->constructSet('page', $db));
 210                                 $res = $this->select(__METHOD__);
 211                                 while($row = $db->fetchObject($res))
 212                                 {
 213                                         if(MWNamespace::isTalk($row->page_namespace))
 214                                                 $talkids[MWNamespace::getSubject($row->page_namespace)][$row->page_title] = $row->page_id;
 215                                         else
 216                                                 $subjectids[MWNamespace::getTalk($row->page_namespace)][$row->page_title] = $row->page_id;
 217                                 }
 218                         }
 219                 }
 220
 221                 foreach ( $titles as $pageid => $title ) {
 222                         $pageInfo = array (
 223                                 'touched' => wfTimestamp(TS_ISO_8601, $pageTouched[$pageid]),
 224                                 'lastrevid' => intval($pageLatest[$pageid]),
 225                                 'counter' => intval($pageCounter[$pageid]),
 226                                 'length' => intval($pageLength[$pageid]),
 227                         );
 228
 229                         if ($pageIsRedir[$pageid])
 230                                 $pageInfo['redirect'] = '';
 231
 232                         if ($pageIsNew[$pageid])
 233                                 $pageInfo['new'] = '';
 234
 235                         if (!is_null($token)) {
 236                                 // Currently all tokens are generated the same way, but it might change
 237                                 if ($tok_edit)
 238                                         $pageInfo['edittoken'] = $wgUser->editToken();
 239                                 if ($tok_delete)
 240                                         $pageInfo['deletetoken'] = $wgUser->editToken();
 241                                 if ($tok_protect)
 242                                         $pageInfo['protecttoken'] = $wgUser->editToken();
 243                                 if ($tok_move)
 244                                         $pageInfo['movetoken'] = $wgUser->editToken();
 245                         }
 246
 247                         if($fld_protection) {
 248                                 if (isset($protections[$pageid])) {
 249                                         $pageInfo['protection'] = $protections[$pageid];
 250                                         $result->setIndexedTagName($pageInfo['protection'], 'pr');
 251                                 } else {
 252                                         # Also check old restrictions
 253                                         if( $pageRestrictions[$pageid] ) {
 254                                                 foreach( explode( ':', trim( $pageRestrictions[$pageid] ) ) as $restrict ) {
 255                                                         $temp = explode( '=', trim( $restrict ) );
 256                                                         if(count($temp) == 1) {
 257                                                                 // old old format should be treated as edit/move restriction
 258                                                                 $restriction = trim( $temp[0] );
 259                                                                 $pageInfo['protection'][] = array(
 260                                                                         'type' => 'edit',
 261                                                                         'level' => $restriction,
 262                                                                         'expiry' => 'infinity',
 263                                                                 );
 264                                                                 $pageInfo['protection'][] = array(
 265                                                                         'type' => 'move',
 266                                                                         'level' => $restriction,
 267                                                                         'expiry' => 'infinity',
 268                                                                 );
 269                                                         } else {
 270                                                                 $restriction = trim( $temp[1] );
 271                                                                 $pageInfo['protection'][] = array(
 272                                                                         'type' => $temp[0],
 273                                                                         'level' => $restriction,
 274                                                                         'expiry' => 'infinity',
 275                                                                 );
 276                                                         }
 277                                                 }
 278                                                 $result->setIndexedTagName($pageInfo['protection'], 'pr');
 279                                         } else {
 280                                                 $pageInfo['protection'] = array();
 281                                         }
 282                                 }
 283                         }
 284                         if($fld_talkid && isset($talkids[$title->getNamespace()][$title->getDbKey()]))
 285                                 $pageInfo['talkid'] = $talkids[$title->getNamespace()][$title->getDbKey()];
 286                         if($fld_subjectid && isset($subjectids[$title->getNamespace()][$title->getDbKey()]))
 287                                 $pageInfo['subjectid'] = $subjectids[$title->getNamespace()][$title->getDbKey()];
 288
 289                         $result->addValue(array (
 290                                 'query',
 291                                 'pages'
 292                         ), $pageid, $pageInfo);
 293                 }
 294
 295                 // Get edit/protect tokens and protection data for missing titles if requested
 296                 // Delete and move tokens are N/A for missing titles anyway
 297                 if($tok_edit || $tok_protect || $fld_protection || $fld_talkid || $fld_subjectid)
 298                 {
 299                         $res = &$result->getData();
 300                         foreach($missing as $pageid => $title) {
 301                                 if($tok_edit)
 302                                         $res['query']['pages'][$pageid]['edittoken'] = $wgUser->editToken();
 303                                 if($tok_protect)
 304                                         $res['query']['pages'][$pageid]['protecttoken'] = $wgUser->editToken();
 305                                 if($fld_protection)
 306                                 {
 307                                         // Apparently the XML formatting code doesn't like array(null)
 308                                         // This is painful to fix, so we'll just work around it
 309                                         if(isset($prottitles[$title->getNamespace()][$title->getDBkey()]))
 310                                                 $res['query']['pages'][$pageid]['protection'][] = $prottitles[$title->getNamespace()][$title->getDBkey()];
 311                                         else
 312                                                 $res['query']['pages'][$pageid]['protection'] = array();
 313                                         $result->setIndexedTagName($res['query']['pages'][$pageid]['protection'], 'pr');
 314                                 }
 315                                 if($fld_talkid && isset($talkids[$title->getNamespace()][$title->getDbKey()]))
 316                                         $res['query']['pages'][$pageid]['talkid'] = $talkids[$title->getNamespace()][$title->getDbKey()];
 317                                 if($fld_subjectid && isset($subjectids[$title->getNamespace()][$title->getDbKey()]))
 318                                         $res['query']['pages'][$pageid]['subjectid'] = $subjectids[$title->getNamespace()][$title->getDbKey()];
 319                         }
 320                 }
 321         }
 322
 323         public function getAllowedParams() {
 324                 return array (
 325                         'prop' => array (
 326                                 ApiBase :: PARAM_DFLT => NULL,
 327                                 ApiBase :: PARAM_ISMULTI => true,
 328                                 ApiBase :: PARAM_TYPE => array (
 329                                         'protection',
 330                                         'talkid',
 331                                         'subjectid'
 332                                 )),
 333                         'token' => array (
 334                                 ApiBase :: PARAM_DFLT => NULL,
 335                                 ApiBase :: PARAM_ISMULTI => true,
 336                                 ApiBase :: PARAM_TYPE => array (
 337                                         'edit',
 338                                         'delete',
 339                                         'protect',
 340                                         'move',
 341                                 )),
 342                 );
 343         }
 344
 345         public function getParamDescription() {
 346                 return array (
 347                         'prop' => array (
 348                                 'Which additional properties to get:',
 349                                 ' "protection"   - List the protection level of each page',
 350                                 ' "talkid"       - The page ID of the talk page for each non-talk page',
 351                                 ' "subjectid"     - The page ID of the parent page for each talk page'
 352                         ),
 353                         'token' => 'Request a token to perform a data-modifying action on a page',
 354                 );
 355         }
 356
 357
 358         public function getDescription() {
 359                 return 'Get basic page information such as namespace, title, last touched date, ...';
 360         }
 361
 362         protected function getExamples() {
 363                 return array (
 364                         'api.php?action=query&prop=info&titles=Main%20Page',
 365                         'api.php?action=query&prop=info&inprop=protection&titles=Main%20Page'
 366                 );
 367         }
 368
 369         public function getVersion() {
 370                 return __CLASS__ . ': $Id$';
 371         }
 372 }