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| 1 | <?php |
| 2 | /** |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License as published by |
| 5 | * the Free Software Foundation; either version 2 of the License, or |
| 6 | * (at your option) any later version. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License |
| 14 | * along with this program; if not, write to the Free Software |
| 15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA |
| 16 | * |
| 17 | * @file |
| 18 | * @ingroup Actions |
| 19 | */ |
| 20 | |
| 21 | use MediaWiki\MainConfigNames; |
| 22 | use MediaWiki\MediaWikiServices; |
| 23 | |
| 24 | /** |
| 25 | * An action that views article content |
| 26 | * |
| 27 | * This is a wrapper that will call Article::view(). |
| 28 | * |
| 29 | * @ingroup Actions |
| 30 | */ |
| 31 | class ViewAction extends FormlessAction { |
| 32 | |
| 33 | public function getName() { |
| 34 | return 'view'; |
| 35 | } |
| 36 | |
| 37 | public function onView() { |
| 38 | return null; |
| 39 | } |
| 40 | |
| 41 | public function needsReadRights() { |
| 42 | // Pages in $wgWhitelistRead can be viewed without having the 'read' |
| 43 | // right. We rely on Article::view() to properly check read access. |
| 44 | return false; |
| 45 | } |
| 46 | |
| 47 | public function show() { |
| 48 | $config = $this->context->getConfig(); |
| 49 | |
| 50 | // Emit deprecated hook warnings. |
| 51 | // We do this only in the view action so that it reliably shows up in |
| 52 | // the debug toolbar without unduly impacting the performance of API and |
| 53 | // ResourceLoader requests. |
| 54 | MediaWikiServices::getInstance()->getHookContainer()->emitDeprecationWarnings(); |
| 55 | |
| 56 | if ( |
| 57 | !$config->get( MainConfigNames::DebugToolbar ) && // don't let this get stuck on pages |
| 58 | $this->getWikiPage()->checkTouched() // page exists and is not a redirect |
| 59 | ) { |
| 60 | // Include any redirect in the last-modified calculation |
| 61 | $redirFromTitle = $this->getArticle()->getRedirectedFrom(); |
| 62 | if ( !$redirFromTitle ) { |
| 63 | $touched = $this->getWikiPage()->getTouched(); |
| 64 | } else { |
| 65 | $touched = max( |
| 66 | $this->getWikiPage()->getTouched(), |
| 67 | $redirFromTitle->getTouched() |
| 68 | ); |
| 69 | } |
| 70 | |
| 71 | // Send HTTP 304 if the IMS matches or otherwise set expiry/last-modified headers |
| 72 | if ( $touched && $this->getOutput()->checkLastModified( $touched ) ) { |
| 73 | wfDebug( __METHOD__ . ": done 304" ); |
| 74 | return; |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | $this->getArticle()->view(); |
| 79 | } |
| 80 | } |