01-T311337-rev4.patch
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	Zabe
	Jan 12 2023, 8:36 AM

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01-T311337-rev4.patch
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	From 2bb5982c0d12e8447f8477fcf91b1949a71caef1 Mon Sep 17 00:00:00 2001
	From: Alexander Vorwerk <zabe@avorwerk.net>
	Date: Tue, 23 Aug 2022 16:18:58 +0200
	Subject: [PATCH] SECURITY: do not render suppressed usernames at
	Special:CheckUser

	Bug: T311337
	Change-Id: I3a23f71a4ee20b612afbf96a91d8dc70518052be
	---
	.../Pagers/AbstractCheckUserPager.php \| 2 +-
	.../Pagers/CheckUserGetEditsPager.php \| 48 ++++++++++++++-----
	2 files changed, 37 insertions(+), 13 deletions(-)

	diff --git a/src/CheckUser/Pagers/AbstractCheckUserPager.php b/src/CheckUser/Pagers/AbstractCheckUserPager.php
	index c3b4e491..de7446df 100644
	--- a/src/CheckUser/Pagers/AbstractCheckUserPager.php
	+++ b/src/CheckUser/Pagers/AbstractCheckUserPager.php
	@@ -98,7 +98,7 @@ abstract class AbstractCheckUserPager extends RangeChronologicalPager {
	protected $templateParser;

	/** @var UserFactory */
	- private $userFactory;
	+ protected $userFactory;

	/**
	* @param FormOptions $opts
	diff --git a/src/CheckUser/Pagers/CheckUserGetEditsPager.php b/src/CheckUser/Pagers/CheckUserGetEditsPager.php
	index 91ceac18..d030c16c 100644
	--- a/src/CheckUser/Pagers/CheckUserGetEditsPager.php
	+++ b/src/CheckUser/Pagers/CheckUserGetEditsPager.php
	@@ -18,6 +18,7 @@ use MediaWiki\CheckUser\TokenQueryManager;
	use MediaWiki\CommentFormatter\CommentFormatter;
	use MediaWiki\Linker\LinkRenderer;
	use MediaWiki\Logger\LoggerFactory;
	+use MediaWiki\Revision\RevisionRecord;
	use MediaWiki\Revision\RevisionStore;
	use MediaWiki\SpecialPage\SpecialPageFactory;
	use MediaWiki\User\UserEditTracker;
	@@ -49,6 +50,9 @@ class CheckUserGetEditsPager extends AbstractCheckUserPager {
	/** @var array */
	protected $formattedRevisionComments = [];

	+ /** @var array */
	+ protected $usernameVisibility = [];
	+
	/** @var LoggerInterface */
	private $logger;

	@@ -148,19 +152,33 @@ class CheckUserGetEditsPager extends AbstractCheckUserPager {
	$this->getLanguage()->userTime( wfTimestamp( TS_MW, $row->cuc_timestamp ), $this->getUser() );
	// Userlinks
	$user = new UserIdentityValue( $row->cuc_user ?? 0, $row->cuc_user_text );
	- if ( !IPUtils::isIPAddress( $user ) && !$user->isRegistered() ) {
	- $templateParams['userLinkClass'] = 'mw-checkuser-nonexistent-user';
	+ if ( $row->cuc_type == RC_EDIT \|\| $row->cuc_type == RC_NEW ) {
	+ $hidden = !$this->usernameVisibility[$row->cuc_this_oldid];
	+ } else {
	+ $hidden = $this->userFactory->newFromUserIdentity( $user )->isHidden()
	+ && !$this->getAuthority()->isAllowed( 'hideuser' );
	+ }
	+ if ( $hidden ) {
	+ $templateParams['userLink'] = Html::element(
	+ 'span',
	+ [ 'class' => 'history-deleted' ],
	+ $this->msg( 'rev-deleted-user' )->text()
	+ );
	+ } else {
	+ if ( !IPUtils::isIPAddress( $user ) && !$user->isRegistered() ) {
	+ $templateParams['userLinkClass'] = 'mw-checkuser-nonexistent-user';
	+ }
	+ $templateParams['userLink'] = Linker::userLink( $user->getId(), $row->cuc_user_text, $row->cuc_user_text );
	+ $templateParams['userToolLinks'] = Linker::userToolLinksRedContribs(
	+ $user->getId(),
	+ $row->cuc_user_text,
	+ $this->userEditTracker->getUserEditCount( $user ),
	+ // don't render parentheses in HTML markup (CSS will provide)
	+ false
	+ );
	+ // Add any block information
	+ $templateParams['flags'] = $this->flagCache[$row->cuc_user_text];
	}
	- $templateParams['userLink'] = Linker::userLink( $user->getId(), $row->cuc_user_text, $row->cuc_user_text );
	- $templateParams['userToolLinks'] = Linker::userToolLinksRedContribs(
	- $user->getId(),
	- $row->cuc_user_text,
	- $this->userEditTracker->getUserEditCount( $user ),
	- // don't render parentheses in HTML markup (CSS will provide)
	- false
	- );
	- // Add any block information
	- $templateParams['flags'] = $this->flagCache[$row->cuc_user_text];
	// Action text, hackish ...
	$templateParams['actionText'] = $this->commentFormatter->format( $row->cuc_actiontext );
	// Comment
	@@ -397,6 +415,12 @@ class CheckUserGetEditsPager extends AbstractCheckUserPager {
	$missingRevisions[$row->cuc_this_oldid] = '';
	} else {
	$revisions[$row->cuc_this_oldid] = $revRecord;
	+
	+ $this->usernameVisibility[$row->cuc_this_oldid] = RevisionRecord::userCanBitfield(
	+ $revRecord->getVisibility(),
	+ RevisionRecord::DELETED_USER,
	+ $this->getAuthority()
	+ );
	}
	}
	}
	--
	2.17.1

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