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<?php
/*
* Copyright (c) 2016 The MITRE Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
namespace MediaWiki\Extension\CommentStreams;
use Article;
use DatabaseUpdater;
use MediaWiki;
use OutputPage;
use Parser;
use PPFrame;
use SearchResult;
use Skin;
use SMW\DIWikiPage;
use SMW\DIProperty;
use SMW\PropertyRegistry;
use SpecialSearch;
use Status;
use Title;
use User;
use WebRequest;
use WikiPage;
class CommentStreamsHooks {
/**
* Implements LoadExtensionSchemaUpdates hook.
* See https://www.mediawiki.org/wiki/Manual:Hooks/LoadExtensionSchemaUpdates
* Updates database schema.
*
* @param DatabaseUpdater $updater database updater
* @return bool continue checking hooks
*/
public static function addCommentTableToDatabase( DatabaseUpdater $updater ) {
$dir = $GLOBALS['wgExtensionDirectory'] . DIRECTORY_SEPARATOR .
'CommentStreams' . DIRECTORY_SEPARATOR . 'sql' . DIRECTORY_SEPARATOR;
$updater->addExtensionTable( 'cs_comment_data', $dir . 'commentData.sql' );
$updater->addExtensionTable( 'cs_votes', $dir . 'votes.sql' );
$updater->addExtensionTable( 'cs_watchlist', $dir . 'watch.sql' );
$updater->modifyExtensionField( 'cs_comment_data', 'page_id',
$dir . 'updateFieldNames.sql' );
$updater->dropExtensionIndex( 'cs_comment_data', 'assoc_page_id',
$dir . 'dropForeignKey1.sql' );
$updater->dropExtensionIndex( 'cs_comment_data', 'cst_assoc_page_id',
$dir . 'dropForeignKey2.sql' );
return true;
}
/**
* Implements CanonicalNamespaces hook.
* See https://www.mediawiki.org/wiki/Manual:Hooks/CanonicalNamespaces
* Adds CommentStreams namespaces.
*
* @param array &$namespaces modifiable array of namespace numbers with
* corresponding canonical names
* @return bool continue checking hooks
*/
public static function addCommentStreamsNamespaces( array &$namespaces ) {
$namespaces[NS_COMMENTSTREAMS] = 'CommentStreams';
$namespaces[NS_COMMENTSTREAMS_TALK] = 'CommentStreams_Talk';
return true;
}
/**
* Implement MediaWikiPerformAction hook.
* See https://www.mediawiki.org/wiki/Manual:Hooks/MediaWikiPerformAction
* Prevents comment pages from being edited or deleted. Displays
* comment title and link to associated page when comment is viewed.
*
* @param OutputPage $output OutputPage object
* @param Article $article Article object
* @param Title $title Title object
* @param User $user User object
* @param WebRequest $request WebRequest object
* @param MediaWiki $wiki MediaWiki object
* @return bool continue checking hooks
*/
public static function onMediaWikiPerformAction( OutputPage $output,
Article $article, Title $title, User $user, WebRequest $request,
MediaWiki $wiki ) {
if ( $title->getNamespace() !== NS_COMMENTSTREAMS ) {
return true;
}
$action = $wiki->getAction();
if ( $action === 'info' || $action === 'history' ) {
return true;
}
if ( $action !== 'view' ) {
$message =
wfMessage( 'commentstreams-error-prohibitedaction', $action )->text();
$output->addHTML( '<p class="error">' . $message . '</p>' );
}
$wikipage = new WikiPage( $title );
$comment = Comment::newFromWikiPage( $wikipage );
if ( $comment !== null ) {
$commentTitle = $comment->getCommentTitle();
if ( $commentTitle !== null ) {
$output->setPageTitle( $commentTitle );
}
$associatedTitle = Title::newFromId( $comment->getAssociatedId() );
if ( $associatedTitle !== null ) {
$values = [];
if ( class_exists( 'PageProps' ) ) {
$values = \PageProps::getInstance()->getProperties( $associatedTitle,
'displaytitle' );
}
if ( array_key_exists( $comment->getAssociatedId(), $values ) ) {
$displaytitle = $values[$comment->getAssociatedId()];
} else {
$displaytitle = $associatedTitle->getPrefixedText();
}
$output->setSubtitle(
CommentStreamsUtils::link( $associatedTitle, '< ' . $displaytitle )
);
} else {
$message =
wfMessage( 'commentstreams-error-comment-on-deleted-page' )->text();
$output->addHTML( '<p class="error">' . $message . '</p>' );
}
if ( method_exists( 'OutputPage', 'addWikiTextAsInterface' ) ) {
$output->addWikiTextAsInterface( $comment->getHTML() );
} else {
$output->addWikiText( $comment->getHTML() );
}
}
return false;
}
/**
* Implement MovePageIsValidMove hook.
* See https://www.mediawiki.org/wiki/Manual:Hooks/MovePageIsValidMove
* Prevents comment pages from being moved.
*
* @param Title $oldTitle Title object of the current (old) location
* @param Title $newTitle Title object of the new location
* @param Status $status Status object to pass error messages to
* @return bool continue checking hooks
*/
public static function onMovePageIsValidMove( Title $oldTitle,
Title $newTitle, Status $status ) {
if ( $oldTitle->getNamespace() === NS_COMMENTSTREAMS ||
$newTitle->getNamespace() === NS_COMMENTSTREAMS ) {
$status->fatal( wfMessage( 'commentstreams-error-prohibitedaction',
'move' ) );
return false;
}
return true;
}
/**
* Implements userCan hook.
* See https://www.mediawiki.org/wiki/Manual:Hooks/userCan
* Ensures that only the original author can edit a comment
*
* @param Title &$title the title object in question
* @param User &$user the user performing the action
* @param string $action the action being performed
* @param bool &$result true means the user is allowed, false means the
* user is not allowed, untouched means this hook has no opinion
* @return bool continue checking hooks
*/
public static function userCan( Title &$title, User &$user, $action,
&$result ) {
if ( $title->getNamespace() !== NS_COMMENTSTREAMS ) {
return true;
}
$wikipage = new WikiPage( $title );
if ( !$wikipage->exists() ) {
return true;
}
if ( $user->isBlocked() ) {
$result = false;
return false;
}
if ( $action === 'cs-comment' ) {
if ( $user->getId() === $wikipage->getOldestRevision()->getUser() ) {
$result = true;
} else {
$result = false;
}
return false;
}
if ( $action === 'cs-moderator-edit' ) {
if ( in_array( 'cs-moderator-edit', $user->getRights() ) ) {
$result = true;
} else {
$result = false;
}
return false;
}
if ( $action === 'cs-moderator-delete' ) {
if ( in_array( 'cs-moderator-delete', $user->getRights() ) ) {
$result = true;
} else {
$result = false;
}
return false;
}
return true;
}
/**
* Implements ParserFirstCallInit hook.
* See https://www.mediawiki.org/wiki/Manual:Hooks/ParserFirstCallInit
* Adds comment-streams, no-comment-streams, and
* comment-streams-initially-collapsed magic words.
*
* @param Parser $parser the parser
* @return bool continue checking hooks
*/
public static function onParserSetup( Parser $parser ) {
$parser->setHook( 'comment-streams',
'MediaWiki\Extension\CommentStreams\CommentStreamsHooks::enableCommentStreams' );
$parser->setHook( 'no-comment-streams',
'MediaWiki\Extension\CommentStreams\CommentStreamsHooks::disableCommentStreams' );
$parser->setHook( 'comment-streams-initially-collapsed',
'MediaWiki\Extension\CommentStreams\CommentStreamsHooks::initiallyCollapseCommentStreams' );
return true;
}
/**
* Implements tag function, <comment-streams/>, which enables
* CommentStreams on a page.
*
* @param string $input input between the tags (ignored)
* @param array $args tag arguments
* @param Parser $parser the parser
* @param PPFrame $frame the parent frame
* @return string to replace tag with
*/
public static function enableCommentStreams( $input, array $args,
Parser $parser, PPFrame $frame ) {
$parser->getOutput()->updateCacheExpiry( 0 );
$cs = CommentStreams::singleton();
$cs->enableCommentsOnPage();
if ( isset( $args['location'] ) && $args['location'] === 'footer' ) {
$ret = '';
} else {
$ret = '<div id="cs-comments"></div>';
}
return $ret;
}
/**
* Implements tag function, <no-comment-streams/>, which disables
* CommentStreams on a page.
*
* @param string $input input between the tags (ignored)
* @param array $args tag arguments
* @param Parser $parser the parser
* @param PPFrame $frame the parent frame
* @return string to replace tag with
*/
public static function disableCommentStreams( $input, array $args,
Parser $parser, PPFrame $frame ) {
$parser->getOutput()->updateCacheExpiry( 0 );
$cs = CommentStreams::singleton();
$cs->disableCommentsOnPage();
return "";
}
/**
* Implements tag function, <comment-streams-initially-collapsed/>, which
* makes CommentStreams on a page start as collapsed when the page is viewed.
*
* @param string $input input between the tags (ignored)
* @param array $args tag arguments
* @param Parser $parser the parser
* @param PPFrame $frame the parent frame
* @return string to replace tag with
*/
public static function initiallyCollapseCommentStreams( $input, array $args,
Parser $parser, PPFrame $frame ) {
$parser->getOutput()->updateCacheExpiry( 0 );
$cs = CommentStreams::singleton();
$cs->initiallyCollapseCommentsOnPage();
return "";
}
/**
* Implements BeforePageDisplay hook.
* See https://www.mediawiki.org/wiki/Manual:Hooks/BeforePageDisplay
* Gets comments for page and initializes variables to be passed to JavaScript.
*
* @param OutputPage &$output OutputPage object
* @param Skin &$skin Skin object that will be used to generate the page
* @return bool continue checking hooks
*/
public static function addCommentsAndInitializeJS( OutputPage &$output,
Skin &$skin ) {
$cs = CommentStreams::singleton();
$cs->init( $output );
return true;
}
/**
* Implements ShowSearchHitTitle hook.
* See https://www.mediawiki.org/wiki/Manual:Hooks/ShowSearchHitTitle
* Modifies search results pointing to comment pages to point to the
* associated content page instead.
*
* @param Title &$title title to link to
* @param string &$text text to use for the link
* @param SearchResult $result the search result
* @param array $terms the search terms entered
* @param SpecialSearch $page the SpecialSearch object
* @return bool continue checking hooks
*/
public static function showSearchHitTitle( Title &$title, &$text,
SearchResult $result, array $terms, SpecialSearch $page ) {
$comment = Comment::newFromWikiPage( WikiPage::factory( $title ) );
if ( $comment !== null ) {
$t = Title::newFromId( $comment->getAssociatedId() );
if ( $t !== null ) {
$title = $t;
}
}
return true;
}
/**
* Implements SMW::Settings::BeforeInitializationComplete callback.
* See https://github.com/SemanticMediaWiki/SemanticMediaWiki/blob/master/docs/technical/hooks/hook.settings.beforeinitializationcomplete.md
* Defines CommentStreams namespace constants.
*
* @param array &$configuration An array of the configuration options
*/
public static function onSMWInitialization( array &$configuration ) {
$namespace = $GLOBALS['wgCommentStreamsNamespaceIndex'];
$configuration['smwgNamespacesWithSemanticLinks'][$namespace] = true;
}
/**
* Implements extension registration callback.
* See https://www.mediawiki.org/wiki/Manual:Extension_registration#Customizing_registration
* Sets configuration constants.
*
*/
public static function onRegistration() {
define( 'NS_COMMENTSTREAMS', $GLOBALS['wgCommentStreamsNamespaceIndex'] );
define( 'NS_COMMENTSTREAMS_TALK',
$GLOBALS['wgCommentStreamsNamespaceIndex'] + 1 );
$GLOBALS['wgNamespacesToBeSearchedDefault'][NS_COMMENTSTREAMS] = true;
$found = false;
foreach ( $GLOBALS['wgGroupPermissions'] as $groupperms ) {
if ( isset( $groupperms['cs-comment'] ) ) {
$found = true;
break;
}
}
if ( !$found ) {
foreach ( $GLOBALS['wgGroupPermissions'] as $group => $groupperms ) {
if ( isset( $groupperms['edit'] ) ) {
$GLOBALS['wgGroupPermissions'][$group]['cs-comment'] =
$groupperms['edit'];
}
}
}
if ( !isset( $GLOBALS['wgGroupPermissions']['csmoderator']
['cs-moderator-delete'] ) ) {
$GLOBALS['wgGroupPermissions']['csmoderator']['cs-moderator-delete'] =
true;
}
if ( !isset( $GLOBALS['wgGroupPermissions']['csmoderator']
['cs-moderator-edit'] ) ) {
$GLOBALS['wgGroupPermissions']['csmoderator']['cs-moderator-edit'] =
false;
}
$GLOBALS['wgAvailableRights'][] = 'cs-comment';
$GLOBALS['wgAvailableRights'][] = 'cs-moderator-edit';
$GLOBALS['wgAvailableRights'][] = 'cs-moderator-delete';
$GLOBALS['wgLogTypes'][] = 'commentstreams';
$GLOBALS['wgLogActionsHandlers']['commentstreams/*'] = 'LogFormatter';
}
/**
* Initialize extra Semantic MediaWiki properties.
* This won't get called unless Semantic MediaWiki is installed.
*/
public static function initProperties() {
$pr = PropertyRegistry::getInstance();
$pr->registerProperty( '___CS_ASSOCPG', '_wpg', 'Comment on' );
$pr->registerProperty( '___CS_REPLYTO', '_wpg', 'Reply to' );
$pr->registerProperty( '___CS_TITLE', '_txt', 'Comment title of' );
$pr->registerProperty( '___CS_UPVOTES', '_num', 'Comment up votes' );
$pr->registerProperty( '___CS_DOWNVOTES', '_num', 'Comment down votes' );
$pr->registerProperty( '___CS_VOTEDIFF', '_num', 'Comment vote diff' );
}
/**
* Implements Semantic MediaWiki SMWStore::updateDataBefore callback.
* This won't get called unless Semantic MediaWiki is installed.
* If the comment has not been added to the database yet, which is indicated
* by a null associated page id, this function will return early, but it
* will be invoked again by an update job.
*
* @param SMW\Store $store semantic data store
* @param SMW\SemanticData $semanticData semantic data for page
* @return bool true to continue
*/
public static function updateData( $store, $semanticData ) {
$subject = $semanticData->getSubject();
if ( $subject !== null && $subject->getTitle() !== null &&
$subject->getTitle()->getNamespace() === NS_COMMENTSTREAMS ) {
$page_id = $subject->getTitle()->getArticleID( Title::GAID_FOR_UPDATE );
$wikipage = WikiPage::newFromId( $page_id );
$comment = Comment::newFromWikiPage( $wikipage );
if ( $comment === null ) {
return true;
}
$assoc_page_id = $comment->getAssociatedId();
if ( $assoc_page_id !== null ) {
$assoc_wikipage = WikiPage::newFromId( $assoc_page_id );
if ( $assoc_wikipage !== null ) {
$propertyDI = new DIProperty( '___CS_ASSOCPG' );
$dataItem =
DIWikiPage::newFromTitle( $assoc_wikipage->getTitle() );
$semanticData->addPropertyObjectValue( $propertyDI, $dataItem );
}
}
$parent_page_id = $comment->getParentId();
if ( $parent_page_id !== null ) {
$parent_wikipage = WikiPage::newFromId( $parent_page_id );
if ( $parent_wikipage !== null ) {
$propertyDI = new DIProperty( '___CS_REPLYTO' );
$dataItem =
DIWikiPage::newFromTitle( $parent_wikipage->getTitle() );
$semanticData->addPropertyObjectValue( $propertyDI, $dataItem );
}
}
$commentTitle = $comment->getCommentTitle();
if ( $commentTitle !== null ) {
$propertyDI = new DIProperty( '___CS_TITLE' );
$dataItem = new SMWDIBlob( $comment->getCommentTitle() );
$semanticData->addPropertyObjectValue( $propertyDI, $dataItem );
}
if ( $GLOBALS['wgCommentStreamsEnableVoting'] === true ) {
$upvotes = $comment->getNumUpVotes();
$propertyDI = new DIProperty( '___CS_UPVOTES' );
$dataItem = new SMWDINumber( $upvotes );
$semanticData->addPropertyObjectValue( $propertyDI, $dataItem );
$downvotes = $comment->getNumDownVotes();
$propertyDI = new DIProperty( '___CS_DOWNVOTES' );
$dataItem = new SMWDINumber( $downvotes );
$semanticData->addPropertyObjectValue( $propertyDI, $dataItem );
$votediff = $upvotes - $downvotes;
$propertyDI = new DIProperty( '___CS_VOTEDIFF' );
$dataItem = new SMWDINumber( $votediff );
$semanticData->addPropertyObjectValue( $propertyDI, $dataItem );
}
}
return true;
}
/**
* @param array &$notifications notifications
* @param array &$notificationCategories notification categories
* @param array &$icons notification icons
*/
public static function onBeforeCreateEchoEvent( &$notifications,
&$notificationCategories, &$icons ) {
$notificationCategories['commentstreams-notification-category'] = [
'priority' => 3
];
$notifications['commentstreams-comment-on-watched-page'] = [
'category' => 'commentstreams-notification-category',
'group' => 'positive',
'section' => 'alert',
'presentation-model' => EchoCSPresentationModel::class,
'user-locators' => [ 'EchoUserLocator::locateUsersWatchingTitle' ]
];
$notifications['commentstreams-reply-on-watched-page'] = [
'category' => 'commentstreams-notification-category',
'group' => 'positive',
'section' => 'alert',
'presentation-model' => EchoCSPresentationModel::class,
'user-locators' => [ 'EchoUserLocator::locateUsersWatchingTitle' ],
'user-filters' => [ 'Comment::locateUsersWatchingComment' ]
];
$notifications['commentstreams-reply-to-watched-comment'] = [
'category' => 'commentstreams-notification-category',
'group' => 'positive',
'section' => 'alert',
'presentation-model' => EchoCSPresentationModel::class,
'user-locators' => [ 'Comment::locateUsersWatchingComment' ]
];
}
}
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