mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/AbuseFilter.git
synced 2024-09-24 10:48:17 +00:00
3c5a074881
Use the UploadVerifyFile hook instead of the UploadVerification one as it provides more data about the upload. This is the first step towards better upload filtering. Change-Id: Ie535c7d20ed79a1e26d8d399a7c25d632c9c7fa0
557 lines
18 KiB
PHP
557 lines
18 KiB
PHP
<?php
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class AbuseFilterHooks {
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static $successful_action_vars = false;
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/** @var WikiPage|Article|bool */
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static $last_edit_page = false; // make sure edit filter & edit save hooks match
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// So far, all of the error message out-params for these hooks accept HTML.
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// Hooray!
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/**
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* Entry points for MediaWiki hook 'EditFilterMerged' (MW 1.20 and earlier)
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*
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* @param $editor EditPage instance (object)
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* @param $text string Content of the edit box
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* @param &$error string Error message to return
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* @param $summary string Edit summary for page
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* @return bool
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*/
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public static function onEditFilterMerged( $editor, $text, &$error, $summary ) {
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global $wgUser;
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$context = $editor->mArticle->getContext();
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$status = Status::newGood();
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$minoredit = $editor->minoredit;
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// poor man's PST, see bug 20310
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$text = str_replace( "\r\n", "\n", $text );
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$continue = self::filterEdit( $context, null, $text, $status, $summary, $wgUser, $minoredit );
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if ( !$status->isOK() ) {
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$error = $status->getWikiText();
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}
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return $continue;
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}
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/**
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* Entry points for MediaWiki hook 'EditFilterMergedContent' (MW 1.21 and later)
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*
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* @param IContextSource $context the context of the edit
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* @param Content $content the new Content generated by the edit
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* @param Status $status Error message to return
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* @param string $summary Edit summary for page
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* @param User $user the user performing the edit
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* @param bool $minoredit whether this is a minor edit according to the user.
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*
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* @return bool
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*/
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public static function onEditFilterMergedContent( IContextSource $context, Content $content,
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Status $status, $summary, User $user, $minoredit ) {
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$text = AbuseFilter::contentToString( $content, Revision::RAW );
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$continue = self::filterEdit( $context, $content, $text, $status, $summary, $user, $minoredit );
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return $continue;
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}
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/**
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* Common implementation for EditFilterMerged and EditFilterMergedContent hooks.
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*
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* @param IContextSource $context the context of the edit
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* @param Content|null $content the new Content generated by the edit
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* @param string $text new page content (subject of filtering)
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* @param Status $status Error message to return
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* @param string $summary Edit summary for page
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* @param User $user the user performing the edit
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* @param bool $minoredit whether this is a minor edit according to the user.
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*
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* @return bool
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*/
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public static function filterEdit( IContextSource $context, $content, $text,
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Status $status, $summary, User $user, $minoredit ) {
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// Load vars
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$vars = new AbuseFilterVariableHolder;
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self::$successful_action_vars = false;
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self::$last_edit_page = false;
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// Check for null edits.
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$oldtext = '';
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$oldcontent = null;
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$title = $context->getTitle();
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if ( ( $title instanceof Title ) && $title->canExist() && $title->exists() ) {
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// Make sure we load the latest text saved in database (bug 31656)
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$page = $context->getWikiPage();
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$revision = $page->getRevision();
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if ( !$revision ) {
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return true;
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}
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if ( defined( 'MW_SUPPORTS_CONTENTHANDLER' ) ) {
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$oldcontent = $revision->getContent( Revision::RAW );
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$oldtext = AbuseFilter::contentToString( $oldcontent );
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} else {
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$oldtext = AbuseFilter::revisionToString( $revision, Revision::RAW );
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}
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// Cache article object so we can share a parse operation
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$articleCacheKey = $title->getNamespace() . ':' . $title->getText();
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AFComputedVariable::$articleCache[$articleCacheKey] = $page;
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} else {
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$page = null;
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}
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// Don't trigger for null edits.
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if ( $content && $oldcontent && $oldcontent->equals( $content ) ) {
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// Compare Content objects if available
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return true;
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} else if ( strcmp( $oldtext, $text ) == 0 ) {
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// Otherwise, compare strings
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return true;
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}
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$vars->addHolders(
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AbuseFilter::generateUserVars( $user ),
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AbuseFilter::generateTitleVars( $title , 'ARTICLE' )
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);
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$vars->setVar( 'action', 'edit' );
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$vars->setVar( 'summary', $summary );
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$vars->setVar( 'minor_edit', $minoredit );
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$vars->setVar( 'old_wikitext', $oldtext );
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$vars->setVar( 'new_wikitext', $text );
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// TODO: set old_content and new_content vars, use them
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$vars->addHolders( AbuseFilter::getEditVars( $title, $page ) );
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$filter_result = AbuseFilter::filterAction( $vars, $title );
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if ( !$filter_result->isOK() ) {
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$status->merge( $filter_result );
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return true; // re-show edit form
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}
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self::$successful_action_vars = $vars;
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self::$last_edit_page = $page;
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return true;
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}
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public static function onArticleSaveComplete(
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&$article, &$user, $text, $summary, $minoredit, $watchthis, $sectionanchor,
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&$flags, $revision
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) {
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if ( ! self::$successful_action_vars || ! $revision ) {
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self::$successful_action_vars = false;
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return true;
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}
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$vars = self::$successful_action_vars;
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if ( $vars->getVar('article_prefixedtext')->toString() !==
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$article->getTitle()->getPrefixedText()
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) {
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return true;
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}
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if ( !self::identicalPageObjects( $article, self::$last_edit_page ) ) {
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return true; // this isn't the edit $successful_action_vars was set for
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}
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self::$last_edit_page = false;
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if ( $vars->getVar('local_log_ids') ) {
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// Now actually do our storage
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$log_ids = $vars->getVar('local_log_ids')->toNative();
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$dbw = wfGetDB( DB_MASTER );
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if ( count($log_ids) ) {
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$dbw->update( 'abuse_filter_log',
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array( 'afl_rev_id' => $revision->getId() ),
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array( 'afl_id' => $log_ids ),
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__METHOD__
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);
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}
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}
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if ( $vars->getVar('global_log_ids') ) {
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$log_ids = $vars->getVar('global_log_ids')->toNative();
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global $wgAbuseFilterCentralDB;
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$fdb = wfGetDB( DB_MASTER, array(), $wgAbuseFilterCentralDB );
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if ( count($log_ids) ) {
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$fdb->update( 'abuse_filter_log',
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array( 'afl_rev_id' => $revision->getId() ),
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array( 'afl_id' => $log_ids, 'afl_wiki' => wfWikiId() ),
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__METHOD__
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);
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}
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}
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return true;
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}
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/**
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* Check if two article objects are identical or have an identical WikiPage
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* @param $page1 Article|WikiPage
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* @param $page2 Article|WikiPage
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* @return bool
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*/
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protected static function identicalPageObjects( $page1, $page2 ) {
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if ( ( class_exists('MWInit') && MWInit::methodExists( 'Article', 'getPage' ) ) ||
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( !class_exists('MWInit') && method_exists('Article', 'getPage') )
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) {
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$wpage1 = ( $page1 instanceof Article ) ? $page1->getPage() : $page1;
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$wpage2 = ( $page2 instanceof Article ) ? $page2->getPage() : $page2;
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return ( $wpage1 === $wpage2 );
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} else { // b/c for before WikiPage
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return ( $page1 === $page2 ); // should be two Article objects
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}
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}
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/**
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* @param $user
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* @param $promote
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* @return bool
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*/
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public static function onGetAutoPromoteGroups( $user, &$promote ) {
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global $wgMemc;
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$key = AbuseFilter::autoPromoteBlockKey( $user );
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if ( $wgMemc->get( $key ) ) {
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$promote = array();
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}
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return true;
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}
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/**
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* @param $oldTitle Title
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* @param $newTitle Title
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* @param $user User
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* @param $error
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* @param $reason
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* @return bool
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*/
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public static function onAbortMove( $oldTitle, $newTitle, $user, &$error, $reason ) {
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$vars = new AbuseFilterVariableHolder;
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global $wgUser;
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$vars->addHolders(
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AbuseFilter::generateUserVars( $wgUser ),
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AbuseFilter::generateTitleVars( $oldTitle, 'MOVED_FROM' ),
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AbuseFilter::generateTitleVars( $newTitle, 'MOVED_TO' )
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);
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$vars->setVar( 'SUMMARY', $reason );
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$vars->setVar( 'ACTION', 'move' );
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$filter_result = AbuseFilter::filterAction( $vars, $oldTitle );
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$error = $filter_result->isOK() ? '' : $filter_result->getWikiText();
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return $filter_result->isOK();
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}
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/**
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* @param $article Article
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* @param $user User
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* @param $reason string
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* @param $error
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* @param $status
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* @return bool
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*/
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public static function onArticleDelete( &$article, &$user, &$reason, &$error, &$status ) {
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$vars = new AbuseFilterVariableHolder;
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global $wgUser;
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$vars->addHolders(
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AbuseFilter::generateUserVars( $wgUser ),
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AbuseFilter::generateTitleVars( $article->getTitle(), 'ARTICLE' )
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);
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$vars->setVar( 'SUMMARY', $reason );
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$vars->setVar( 'ACTION', 'delete' );
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$filter_result = AbuseFilter::filterAction( $vars, $article->getTitle() );
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$status->merge( $filter_result );
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$error = $filter_result->isOK() ? '' : $filter_result->getWikiText();
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return $filter_result->isOK();
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}
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/**
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* @param $user User
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* @param $message
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* @param $autocreate bool Indicates whether the account is created automatically.
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* @return bool
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*/
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private static function checkNewAccount( $user, &$message, $autocreate ) {
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if ( $user->getName() == wfMessage( 'abusefilter-blocker' )->inContentLanguage()->text() ) {
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$message = wfMessage( 'abusefilter-accountreserved' )->text();
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return false;
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}
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$vars = new AbuseFilterVariableHolder;
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// Add variables only for a registered user, so IP addresses of
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// new users won't be exposed
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global $wgUser;
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if ( $wgUser->getId() ) {
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$vars->addHolders( AbuseFilter::generateUserVars( $wgUser ) );
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}
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$vars->setVar( 'ACTION', $autocreate ? 'autocreateaccount' : 'createaccount' );
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$vars->setVar( 'ACCOUNTNAME', $user->getName() );
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$filter_result = AbuseFilter::filterAction(
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$vars, SpecialPage::getTitleFor( 'Userlogin' ) );
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$message = $filter_result->isOK() ? '' : $filter_result->getWikiText();
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return $filter_result->isOK();
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}
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/**
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* @param $user User
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* @param $message
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* @return bool
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*/
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public static function onAbortNewAccount( $user, &$message ) {
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return self::checkNewAccount( $user, $message, false );
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}
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/**
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* @param $user User
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* @param $message
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* @return bool
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*/
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public static function onAbortAutoAccount( $user, &$message ) {
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// FIXME: ERROR MESSAGE IS SHOWN IN A WEIRD WAY, BEACUSE $message
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// HERE MEANS NAME OF THE MESSAGE, NOT THE TEXT OF THE MESSAGE AS
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// IN AbortNewAccount HOOK WHICH WE CANNOT PROVIDE!
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return self::checkNewAccount( $user, $message, true );
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}
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/**
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* @param $recentChange RecentChange
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* @return bool
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*/
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public static function onRecentChangeSave( $recentChange ) {
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$title = Title::makeTitle(
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$recentChange->getAttribute( 'rc_namespace' ),
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$recentChange->getAttribute( 'rc_title' )
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);
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$action = $recentChange->mAttribs['rc_log_type'] ?
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$recentChange->mAttribs['rc_log_type'] : 'edit';
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$actionID = implode( '-', array(
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$title->getPrefixedText(), $recentChange->mAttribs['rc_user_text'], $action
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) );
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if ( !empty( AbuseFilter::$tagsToSet[$actionID] )
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&& count( $tags = AbuseFilter::$tagsToSet[$actionID] ) )
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{
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ChangeTags::addTags(
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$tags,
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$recentChange->mAttribs['rc_id'],
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$recentChange->mAttribs['rc_this_oldid'],
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$recentChange->mAttribs['rc_logid']
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);
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}
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return true;
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}
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/**
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* @param $emptyTags array
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* @return bool
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*/
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public static function onListDefinedTags( &$emptyTags ) {
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# This is a pretty awful hack.
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$dbr = wfGetDB( DB_SLAVE );
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$res = $dbr->select(
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array( 'abuse_filter_action', 'abuse_filter' ),
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'afa_parameters',
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array( 'afa_consequence' => 'tag', 'af_enabled' => true ),
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__METHOD__,
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array(),
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array( 'abuse_filter' => array( 'INNER JOIN', 'afa_filter=af_id' ) )
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);
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foreach ( $res as $row ) {
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$emptyTags = array_filter(
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array_merge( explode( "\n", $row->afa_parameters ), $emptyTags )
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);
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}
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return true;
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}
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/**
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* @param $updater DatabaseUpdater
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* @throws MWException
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* @return bool
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*/
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public static function onLoadExtensionSchemaUpdates( $updater = null ) {
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$dir = dirname( __FILE__ );
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if ( $updater->getDB()->getType() == 'mysql' || $updater->getDB()->getType() == 'sqlite' ) {
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if ( $updater->getDB()->getType() == 'mysql' ) {
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$updater->addExtensionUpdate( array( 'addTable', 'abuse_filter', "$dir/abusefilter.tables.sql", true ) );
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$updater->addExtensionUpdate( array( 'addTable', 'abuse_filter_history', "$dir/db_patches/patch-abuse_filter_history.sql", true ) );
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} else {
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$updater->addExtensionUpdate( array( 'addTable', 'abuse_filter', "$dir/abusefilter.tables.sqlite.sql", true ) );
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$updater->addExtensionUpdate( array( 'addTable', 'abuse_filter_history', "$dir/db_patches/patch-abuse_filter_history.sqlite.sql", true ) );
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}
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$updater->addExtensionUpdate( array( 'addField', 'abuse_filter_history', 'afh_changed_fields', "$dir/db_patches/patch-afh_changed_fields.sql", true ) );
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$updater->addExtensionUpdate( array( 'addField', 'abuse_filter', 'af_deleted', "$dir/db_patches/patch-af_deleted.sql", true ) );
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$updater->addExtensionUpdate( array( 'addField', 'abuse_filter', 'af_actions', "$dir/db_patches/patch-af_actions.sql", true ) );
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$updater->addExtensionUpdate( array( 'addField', 'abuse_filter', 'af_global', "$dir/db_patches/patch-global_filters.sql", true ) );
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$updater->addExtensionUpdate( array( 'addField', 'abuse_filter_log', 'afl_rev_id', "$dir/db_patches/patch-afl_action_id.sql", true ) );
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if ( $updater->getDB()->getType() == 'mysql' ) {
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$updater->addExtensionUpdate( array( 'addIndex', 'abuse_filter_log', 'filter_timestamp', "$dir/db_patches/patch-fix-indexes.sql", true ) );
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} else {
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$updater->addExtensionUpdate( array( 'addIndex', 'abuse_filter_log', 'afl_filter_timestamp', "$dir/db_patches/patch-fix-indexes.sqlite.sql", true ) );
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}
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$updater->addExtensionUpdate( array('addField', 'abuse_filter', 'af_group', "$dir/db_patches/patch-af_group.sql", true ) );
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if ( $updater->getDB()->getType() == 'mysql' ) {
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$updater->addExtensionUpdate( array( 'addIndex', 'abuse_filter_log', 'wiki_timestamp', "$dir/db_patches/patch-global_logging_wiki-index.sql", true ) );
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} else {
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$updater->addExtensionUpdate( array( 'addIndex', 'abuse_filter_log', 'afl_wiki_timestamp', "$dir/db_patches/patch-global_logging_wiki-index.sqlite.sql", true ) );
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}
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} elseif ( $updater->getDB()->getType() == 'postgres' ) {
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$updater->addExtensionUpdate( array( 'addTable', 'abuse_filter', "$dir/abusefilter.tables.pg.sql", true ) );
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$updater->addExtensionUpdate( array( 'addTable', 'abuse_filter_history', "$dir/db_patches/patch-abuse_filter_history.pg.sql", true ) );
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$updater->addExtensionUpdate( array( 'addPgField', 'abuse_filter', 'af_actions', "TEXT NOT NULL DEFAULT ''" ) );
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$updater->addExtensionUpdate( array( 'addPgField', 'abuse_filter', 'af_deleted', 'SMALLINT NOT NULL DEFAULT 0' ) );
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$updater->addExtensionUpdate( array( 'addPgField', 'abuse_filter', 'af_global', 'SMALLINT NOT NULL DEFAULT 0' ) );
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$updater->addExtensionUpdate( array( 'addPgField', 'abuse_filter_log', 'afl_wiki', 'TEXT' ) );
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$updater->addExtensionUpdate( array( 'addPgField', 'abuse_filter_log', 'afl_deleted', 'SMALLINT' ) );
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$updater->addExtensionUpdate( array( 'changeField', 'abuse_filter_log', 'afl_filter', 'TEXT', '' ) );
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$updater->addExtensionUpdate( array( 'addPgExtIndex', 'abuse_filter_log', 'abuse_filter_log_ip', "(afl_ip)" ) );
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$updater->addExtensionUpdate( array( 'addPgExtIndex', 'abuse_filter_log', 'abuse_filter_log_wiki', "(afl_wiki)" ) );
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}
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$updater->addExtensionUpdate( array( array( __CLASS__, 'createAbuseFilterUser' ) ) );
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return true;
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}
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/**
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* Updater callback to create the AbuseFilter user after the user tables have been updated.
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* @param $updater DatabaseUpdater
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*/
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public static function createAbuseFilterUser( $updater ) {
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$user = User::newFromName( wfMessage( 'abusefilter-blocker' )->inContentLanguage()->text() );
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|
|
if ( $user && !$updater->updateRowExists( 'create abusefilter-blocker-user' ) ) {
|
|
if ( !$user->getId() ) {
|
|
$user->addToDatabase();
|
|
$user->saveSettings();
|
|
# Increment site_stats.ss_users
|
|
$ssu = new SiteStatsUpdate( 0, 0, 0, 0, 1 );
|
|
$ssu->doUpdate();
|
|
} else {
|
|
// Sorry dude, we need this account.
|
|
$user->setPassword( null );
|
|
$user->setEmail( null );
|
|
$user->saveSettings();
|
|
}
|
|
$updater->insertUpdateRow( 'create abusefilter-blocker-user' );
|
|
# Promote user so it doesn't look too crazy.
|
|
$user->addGroup( 'sysop' );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param $id
|
|
* @param $nt Title
|
|
* @param $tools
|
|
* @return bool
|
|
*/
|
|
public static function onContributionsToolLinks( $id, $nt, &$tools ) {
|
|
global $wgUser;
|
|
if ( $wgUser->isAllowed( 'abusefilter-log' ) ) {
|
|
$tools[] = Linker::link(
|
|
SpecialPage::getTitleFor( 'AbuseLog' ),
|
|
wfMessage( 'abusefilter-log-linkoncontribs' )->text(),
|
|
array( 'title' => wfMessage( 'abusefilter-log-linkoncontribs-text' )->parse() ),
|
|
array( 'wpSearchUser' => $nt->getText() )
|
|
);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Handler for the UploadVerifyFile hook
|
|
*
|
|
* @param $upload UploadBase
|
|
* @param $mime
|
|
* @param $error array
|
|
*
|
|
* @return bool
|
|
*/
|
|
public static function onUploadVerifyFile( $upload, $mime, &$error ) {
|
|
global $wgUser, $wgVersion;
|
|
|
|
$vars = new AbuseFilterVariableHolder;
|
|
$title = $upload->getTitle();
|
|
$vars->addHolders(
|
|
AbuseFilter::generateUserVars( $wgUser ),
|
|
AbuseFilter::generateTitleVars( $title, 'FILE' )
|
|
);
|
|
|
|
$vars->setVar( 'ACTION', 'upload' );
|
|
|
|
// We us the hexadecimal version of the file sha1
|
|
if ( version_compare( $wgVersion, '1.21', '>=' ) ) {
|
|
// Use UploadBase::getTempFileSha1Base36 so that we don't have to calculate the sha1 sum again
|
|
$sha1 = wfBaseConvert( $upload->getTempFileSha1Base36() , 36, 16, 40 );
|
|
} else {
|
|
// UploadBase::getTempFileSha1Base36 wasn't public until 1.21
|
|
$sha1 = sha1_file( $upload->getTempPath() );
|
|
}
|
|
|
|
$vars->setVar( 'file_sha1', $sha1 );
|
|
|
|
$filter_result = AbuseFilter::filterAction( $vars, $title );
|
|
|
|
if ( !$filter_result->isOK() ) {
|
|
$error = $filter_result->getErrorsArray();
|
|
$error = $error[0];
|
|
}
|
|
|
|
return $filter_result->isOK();
|
|
}
|
|
|
|
/**
|
|
* Adds global variables to the Javascript as needed
|
|
*
|
|
* @param array $vars
|
|
* @return bool
|
|
*/
|
|
public static function onMakeGlobalVariablesScript( array &$vars ) {
|
|
if ( AbuseFilter::$editboxName !== null ) {
|
|
$vars['abuseFilterBoxName'] = AbuseFilter::$editboxName;
|
|
}
|
|
|
|
if ( AbuseFilterViewExamine::$examineType !== null ) {
|
|
$vars['abuseFilterExamine'] = array(
|
|
'type' => AbuseFilterViewExamine::$examineType,
|
|
'id' => AbuseFilterViewExamine::$examineId,
|
|
);
|
|
}
|
|
return true;
|
|
}
|
|
}
|