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<?php
namespace MediaWiki\EditPage;
use LogicException;
use MediaWiki\Block\DatabaseBlockStore;
use MediaWiki\Config\Config;
use MediaWiki\FileRepo\RepoGroup;
use MediaWiki\Html\Html;
use MediaWiki\Language\RawMessage;
use MediaWiki\Linker\LinkRenderer;
use MediaWiki\Logging\LogEventsList;
use MediaWiki\MainConfigNames;
use MediaWiki\Page\ProperPageIdentity;
use MediaWiki\Permissions\Authority;
use MediaWiki\Permissions\PermissionManager;
use MediaWiki\Permissions\RestrictionStore;
use MediaWiki\Revision\RevisionRecord;
use MediaWiki\Skin\Skin;
use MediaWiki\Skin\SkinFactory;
use MediaWiki\SpecialPage\SpecialPage;
use MediaWiki\SpecialPage\SpecialPageFactory;
use MediaWiki\Title\NamespaceInfo;
use MediaWiki\Title\Title;
use MediaWiki\User\TempUser\TempUserCreator;
use MediaWiki\User\UserFactory;
use MediaWiki\User\UserNameUtils;
use MediaWiki\User\UserRigorOptions;
use MediaWiki\Utils\UrlUtils;
use MessageLocalizer;
use Wikimedia\Rdbms\IConnectionProvider;
use Wikimedia\Rdbms\ReadOnlyMode;
/**
* Provides the intro messages (edit notices and others) to be displayed before an edit form.
*
* Used by EditPage, and may be used by extensions providing alternative editors.
*
* @since 1.41
*/
class IntroMessageBuilder {
use ParametersHelper;
// Parameters for getIntroMessages()
public const MORE_FRAMES = 1;
public const LESS_FRAMES = 2;
private Config $config;
private LinkRenderer $linkRenderer;
private PermissionManager $permManager;
private UserNameUtils $userNameUtils;
private TempUserCreator $tempUserCreator;
private UserFactory $userFactory;
private RestrictionStore $restrictionStore;
private DatabaseBlockStore $blockStore;
private ReadOnlyMode $readOnlyMode;
private SpecialPageFactory $specialPageFactory;
private RepoGroup $repoGroup;
private NamespaceInfo $namespaceInfo;
private SkinFactory $skinFactory;
private IConnectionProvider $dbProvider;
private UrlUtils $urlUtils;
public function __construct(
Config $config,
LinkRenderer $linkRenderer,
PermissionManager $permManager,
UserNameUtils $userNameUtils,
TempUserCreator $tempUserCreator,
UserFactory $userFactory,
RestrictionStore $restrictionStore,
DatabaseBlockStore $blockStore,
ReadOnlyMode $readOnlyMode,
SpecialPageFactory $specialPageFactory,
RepoGroup $repoGroup,
NamespaceInfo $namespaceInfo,
SkinFactory $skinFactory,
IConnectionProvider $dbProvider,
UrlUtils $urlUtils
) {
$this->config = $config;
$this->linkRenderer = $linkRenderer;
$this->permManager = $permManager;
$this->userNameUtils = $userNameUtils;
$this->tempUserCreator = $tempUserCreator;
$this->userFactory = $userFactory;
$this->restrictionStore = $restrictionStore;
$this->blockStore = $blockStore;
$this->readOnlyMode = $readOnlyMode;
$this->specialPageFactory = $specialPageFactory;
$this->repoGroup = $repoGroup;
$this->namespaceInfo = $namespaceInfo;
$this->skinFactory = $skinFactory;
$this->dbProvider = $dbProvider;
$this->urlUtils = $urlUtils;
}
/**
* Wrapper for LogEventsList::showLogExtract() that returns the string with the output.
*
* LogEventsList::showLogExtract() has some side effects affecting the global state (main request
* context), which should not be relied upon.
*
* @param string|array $types See LogEventsList::showLogExtract()
* @param string $page See LogEventsList::showLogExtract()
* @param string $user See LogEventsList::showLogExtract()
* @param array $param See LogEventsList::showLogExtract()
* @return string
*/
private function getLogExtract( $types = [], $page = '', $user = '', $param = [] ): string {
$outString = '';
LogEventsList::showLogExtract( $outString, $types, $page, $user, $param );
return $outString;
}
/**
* Return intro messages to be shown before an edit form.
*
* The message identifiers used as array keys are stable. Callers of this method may recognize
* specific messages and omit them when displaying, if they're not applicable to some interface or
* if they provide the same information in an alternative way.
*
* Callers should load the 'mediawiki.interface.helpers.styles' ResourceLoader module, as some of
* the possible messages rely on those styles.
*
* @param int $frames Some intro messages come with optional wrapper frames.
* Pass IntroMessageBuilder::MORE_FRAMES to include the frames whenever possible,
* or IntroMessageBuilder::LESS_FRAMES to omit them whenever possible.
* @param string[] $skip Identifiers of messages not to generate
* @param MessageLocalizer $localizer
* @param ProperPageIdentity $page Page being viewed
* @param RevisionRecord|null $revRecord Revision being viewed, null if page doesn't exist
* @param Authority $performer
* @param string|null $editIntro
* @param string|null $returnToQuery
* @param bool $preview
* @param string|null $section
* @return array<string,string> Ordered map of identifiers to message HTML
*/
public function getIntroMessages(
int $frames,
array $skip,
MessageLocalizer $localizer,
ProperPageIdentity $page,
?RevisionRecord $revRecord,
Authority $performer,
?string $editIntro,
?string $returnToQuery,
bool $preview,
?string $section = null
): array {
$title = Title::newFromPageIdentity( $page );
$messages = new IntroMessageList( $frames, $skip );
$this->addOldRevisionWarning( $messages, $localizer, $revRecord );
if ( !$preview ) {
$this->addCodeEditingIntro( $messages, $localizer, $title, $performer );
$this->addSharedRepoHint( $messages, $localizer, $page );
$this->addUserWarnings( $messages, $localizer, $title, $performer );
$this->addEditIntro( $messages, $localizer, $page, $performer, $editIntro, $section );
$this->addRecreateWarning( $messages, $localizer, $page );
}
$this->addTalkPageText( $messages, $localizer, $title );
$this->addEditNotices( $messages, $localizer, $title, $revRecord );
$this->addReadOnlyWarning( $messages, $localizer );
$this->addAnonEditWarning( $messages, $localizer, $title, $performer, $returnToQuery, $preview );
$this->addUserConfigPageInfo( $messages, $localizer, $title, $performer, $preview );
$this->addPageProtectionWarningHeaders( $messages, $localizer, $page );
$this->addHeaderCopyrightWarning( $messages, $localizer );
return $messages->getList();
}
/**
* Adds introduction to code editing.
*/
private function addCodeEditingIntro(
IntroMessageList $messages,
MessageLocalizer $localizer,
Title $title,
Authority $performer
): void {
$isUserJsConfig = $title->isUserJsConfigPage();
$namespace = $title->getNamespace();
$intro = '';
if (
$title->isUserConfigPage() &&
$title->isSubpageOf( Title::makeTitle( NS_USER, $performer->getUser()->getName() ) )
) {
$isUserCssConfig = $title->isUserCssConfigPage();
$isUserJsonConfig = $title->isUserJsonConfigPage();
$isUserJsConfig = $title->isUserJsConfigPage();
if ( $isUserCssConfig ) {
$warning = 'usercssispublic';
} elseif ( $isUserJsonConfig ) {
$warning = 'userjsonispublic';
} else {
$warning = 'userjsispublic';
}
$warningText = $localizer->msg( $warning )->parse();
$intro .= $warningText ? Html::rawElement(
'div',
[ 'class' => 'mw-userconfigpublic' ],
$warningText
) : '';
}
$codeMsg = $localizer->msg( 'editpage-code-message' );
$codeMessageText = $codeMsg->isDisabled() ? '' : $codeMsg->parseAsBlock();
$isJavaScript = $title->hasContentModel( CONTENT_MODEL_JAVASCRIPT );
$isCSS = $title->hasContentModel( CONTENT_MODEL_CSS );
if ( $namespace === NS_MEDIAWIKI ) {
$interfaceMsg = $localizer->msg( 'editinginterface' );
$interfaceMsgText = $interfaceMsg->parse();
# Show a warning if editing an interface message
$intro .= $interfaceMsgText ? Html::rawElement(
'div',
[ 'class' => 'mw-editinginterface' ],
$interfaceMsgText
) : '';
# If this is a default message (but not css, json, or js),
# show a hint that it is translatable on translatewiki.net
if (
!$isCSS
&& !$title->hasContentModel( CONTENT_MODEL_JSON )
&& !$isJavaScript
) {
$defaultMessageText = $title->getDefaultMessageText();
if ( $defaultMessageText !== false ) {
$translateInterfaceText = $localizer->msg( 'translateinterface' )->parse();
$intro .= $translateInterfaceText ? Html::rawElement(
'div',
[ 'class' => 'mw-translateinterface' ],
$translateInterfaceText
) : '';
}
}
}
if ( $isUserJsConfig ) {
$userConfigDangerousMsg = $localizer->msg( 'userjsdangerous' )->parse();
$intro .= $userConfigDangerousMsg ? Html::rawElement(
'div',
[ 'class' => 'mw-userconfigdangerous' ],
$userConfigDangerousMsg
) : '';
}
// If the wiki page contains JavaScript or CSS link add message specific to code.
if ( $isJavaScript || $isCSS ) {
$intro .= $codeMessageText;
}
$messages->addWithKey(
'code-editing-intro',
$intro,
// While semantically this is a warning, given the impact of editing these pages,
// it's best to deter users who don't understand what they are doing by
// acknowledging the danger here. This is a potentially destructive action
// so requires destructive coloring.
Html::errorBox( '$1' )
);
}
private function addSharedRepoHint(
IntroMessageList $messages,
MessageLocalizer $localizer,
ProperPageIdentity $page
): void {
$namespace = $page->getNamespace();
if ( $namespace === NS_FILE ) {
# Show a hint to shared repo
$file = $this->repoGroup->findFile( $page );
if ( $file && !$file->isLocal() ) {
$descUrl = $file->getDescriptionUrl();
# there must be a description url to show a hint to shared repo
if ( $descUrl ) {
if ( !$page->exists() ) {
$messages->add(
$localizer->msg(
'sharedupload-desc-create',
$file->getRepo()->getDisplayName(),
$descUrl
),
"<div class=\"mw-sharedupload-desc-create\">\n$1\n</div>"
);
} else {
$messages->add(
$localizer->msg(
'sharedupload-desc-edit',
$file->getRepo()->getDisplayName(),
$descUrl
),
"<div class=\"mw-sharedupload-desc-edit\">\n$1\n</div>"
);
}
}
}
}
}
private function addUserWarnings(
IntroMessageList $messages,
MessageLocalizer $localizer,
Title $title,
Authority $performer
): void {
$namespace = $title->getNamespace();
# Show a warning message when someone creates/edits a user (talk) page but the user does not exist
# Show log extract when the user is currently blocked
if ( $namespace === NS_USER || $namespace === NS_USER_TALK ) {
$username = explode( '/', $title->getText(), 2 )[0];
// Allow IP users
$validation = UserRigorOptions::RIGOR_NONE;
$user = $this->userFactory->newFromName( $username, $validation );
$ip = $this->userNameUtils->isIP( $username );
$userExists = ( $user && $user->isRegistered() );
if ( $userExists && $user->isHidden() && !$performer->isAllowed( 'hideuser' ) ) {
// If the user exists, but is hidden, and the viewer cannot see hidden
// users, pretend like they don't exist at all. See T120883
$userExists = false;
}
if ( !$userExists && !$ip ) {
$messages->addWithKey(
'userpage-userdoesnotexist',
// This wrapper frame, for whatever reason, is not optional
Html::warningBox(
$localizer->msg( 'userpage-userdoesnotexist', wfEscapeWikiText( $username ) )->parse(),
'mw-userpage-userdoesnotexist'
)
);
return;
}
$blockLogBox = LogEventsList::getBlockLogWarningBox(
$this->blockStore,
$this->namespaceInfo,
$localizer,
$this->linkRenderer,
$user,
$title
);
if ( $blockLogBox !== null ) {
$messages->addWithKey( 'blocked-notice-logextract', $blockLogBox );
}
}
}
/**
* Try to add a custom edit intro, or use the standard one if this is not possible.
*/
private function addEditIntro(
IntroMessageList $messages,
MessageLocalizer $localizer,
ProperPageIdentity $page,
Authority $performer,
?string $editIntro,
?string $section
): void {
if ( ( $editIntro === null || $editIntro === '' ) && $section === 'new' ) {
// Custom edit intro for new sections
$editIntro = 'MediaWiki:addsection-editintro';
}
if ( $editIntro !== null && $editIntro !== '' ) {
$introTitle = Title::newFromText( $editIntro );
// (T334855) Use SpecialMyLanguage redirect so that nonexistent translated pages can
// fall back to the corresponding page in a suitable language
$introTitle = $this->getTargetTitleIfSpecialMyLanguage( $introTitle );
if ( $this->isPageExistingAndViewable( $introTitle, $performer ) ) {
$messages->addWithKey(
'editintro',
$localizer->msg( new RawMessage(
// Added using template syntax, to take <noinclude>'s into account.
'<div class="mw-editintro">{{:' . $introTitle->getFullText() . '}}</div>'
) )
// Parse as content to enable language conversion (T353870)
->inContentLanguage()
->parse()
);
return;
}
}
if ( !$page->exists() ) {
$helpLink = $this->urlUtils->expand(
Skin::makeInternalOrExternalUrl(
$localizer->msg( 'helppage' )->inContentLanguage()->text()
),
PROTO_CURRENT
);
if ( $helpLink === null ) {
throw new LogicException( 'Help link was invalid, this should be impossible' );
}
if ( $performer->getUser()->isRegistered() ) {
$messages->add(
$localizer->msg( 'newarticletext', $helpLink ),
// Suppress the external link icon, consider the help url an internal one
"<div class=\"mw-newarticletext plainlinks\">\n$1\n</div>"
);
} else {
$messages->add(
$localizer->msg( 'newarticletextanon', $helpLink ),
// Suppress the external link icon, consider the help url an internal one
"<div class=\"mw-newarticletextanon plainlinks\">\n$1\n</div>"
);
}
}
}
private function addRecreateWarning(
IntroMessageList $messages,
MessageLocalizer $localizer,
ProperPageIdentity $page
): void {
# Give a notice if the user is editing a deleted/moved page...
if ( !$page->exists() ) {
$dbr = $this->dbProvider->getReplicaDatabase();
$messages->addWithKey(
'recreate-moveddeleted-warn',
$this->getLogExtract( [ 'delete', 'move', 'merge' ], $page, '', [
'lim' => 10,
'conds' => [ $dbr->expr( 'log_action', '!=', 'revision' ) ],
'showIfEmpty' => false,
'msgKey' => [ 'recreate-moveddeleted-warn' ],
] )
);
}
}
private function addTalkPageText(
IntroMessageList $messages,
MessageLocalizer $localizer,
Title $title
): void {
if ( $title->isTalkPage() ) {
$messages->add( $localizer->msg( 'talkpagetext' ) );
}
}
private function addEditNotices(
IntroMessageList $messages,
MessageLocalizer $localizer,
Title $title,
?RevisionRecord $revRecord
): void {
$editNotices = $title->getEditNotices( $revRecord ? $revRecord->getId() : 0 );
if ( count( $editNotices ) ) {
foreach ( $editNotices as $key => $html ) {
$messages->addWithKey( $key, $html );
}
} else {
$msg = $localizer->msg( 'editnotice-notext' );
if ( !$msg->isDisabled() ) {
$messages->addWithKey(
'editnotice-notext',
Html::rawElement(
'div',
[ 'class' => 'mw-editnotice-notext' ],
$msg->parseAsBlock()
)
);
}
}
}
private function addOldRevisionWarning(
IntroMessageList $messages,
MessageLocalizer $localizer,
?RevisionRecord $revRecord
): void {
if ( $revRecord && !$revRecord->isCurrent() ) {
// This wrapper frame is not optional (T337071)
$messages->addWithKey( 'editingold', Html::warningBox( $localizer->msg( 'editingold' )->parse() ) );
}
}
private function addReadOnlyWarning(
IntroMessageList $messages,
MessageLocalizer $localizer
): void {
if ( $this->readOnlyMode->isReadOnly() ) {
$messages->add(
$localizer->msg( 'readonlywarning', $this->readOnlyMode->getReason() ),
"<div id=\"mw-read-only-warning\">\n$1\n</div>"
);
}
}
private function addAnonEditWarning(
IntroMessageList $messages,
MessageLocalizer $localizer,
Title $title,
Authority $performer,
?string $returnToQuery,
bool $preview
): void {
if ( !$performer->getUser()->isRegistered() ) {
$tempUserCreateActive = $this->tempUserCreator->shouldAutoCreate( $performer, 'edit' );
if ( !$preview ) {
$messages->addWithKey(
'anoneditwarning',
$localizer->msg(
$tempUserCreateActive ? 'autocreate-edit-warning' : 'anoneditwarning',
// Log-in link
SpecialPage::getTitleFor( 'Userlogin' )->getFullURL( [
'returnto' => $title->getPrefixedDBkey(),
'returntoquery' => $returnToQuery,
] ),
// Sign-up link
SpecialPage::getTitleFor( 'CreateAccount' )->getFullURL( [
'returnto' => $title->getPrefixedDBkey(),
'returntoquery' => $returnToQuery,
] )
)->parse(),
Html::warningBox( '$1', 'mw-anon-edit-warning' )
);
} else {
$messages->addWithKey(
'anoneditwarning',
$localizer->msg( $tempUserCreateActive ? 'autocreate-preview-warning' : 'anonpreviewwarning' )
->parse(),
Html::warningBox( '$1', 'mw-anon-preview-warning' ) );
}
}
}
/**
* Checks whether the user entered a skin name in uppercase,
* e.g. "User:Example/Monobook.css" instead of "monobook.css"
*/
private function isWrongCaseUserConfigPage( Title $title ): bool {
if ( $title->isUserCssConfigPage() || $title->isUserJsConfigPage() ) {
$name = $title->getSkinFromConfigSubpage();
$skins = array_merge(
array_keys( $this->skinFactory->getInstalledSkins() ),
[ 'common' ]
);
return !in_array( $name, $skins, true )
&& in_array( strtolower( $name ), $skins, true );
} else {
return false;
}
}
private function addUserConfigPageInfo(
IntroMessageList $messages,
MessageLocalizer $localizer,
Title $title,
Authority $performer,
bool $preview
): void {
if ( $title->isUserConfigPage() ) {
# Check the skin exists
if ( $this->isWrongCaseUserConfigPage( $title ) ) {
$messages->add(
$localizer->msg( 'userinvalidconfigtitle', $title->getSkinFromConfigSubpage() ),
Html::errorBox( '$1', '', 'mw-userinvalidconfigtitle' )
);
}
if ( $title->isSubpageOf( Title::makeTitle( NS_USER, $performer->getUser()->getName() ) ) ) {
$isUserCssConfig = $title->isUserCssConfigPage();
$isUserJsonConfig = $title->isUserJsonConfigPage();
$isUserJsConfig = $title->isUserJsConfigPage();
if ( !$preview ) {
if ( $isUserCssConfig && $this->config->get( MainConfigNames::AllowUserCss ) ) {
$messages->add(
$localizer->msg( 'usercssyoucanpreview' ),
"<div id='mw-usercssyoucanpreview'>\n$1\n</div>"
);
} elseif ( $isUserJsonConfig /* No comparable 'AllowUserJson' */ ) {
$messages->add(
$localizer->msg( 'userjsonyoucanpreview' ),
"<div id='mw-userjsonyoucanpreview'>\n$1\n</div>"
);
} elseif ( $isUserJsConfig && $this->config->get( MainConfigNames::AllowUserJs ) ) {
$messages->add(
$localizer->msg( 'userjsyoucanpreview' ),
"<div id='mw-userjsyoucanpreview'>\n$1\n</div>"
);
}
}
}
}
}
private function addPageProtectionWarningHeaders(
IntroMessageList $messages,
MessageLocalizer $localizer,
ProperPageIdentity $page
): void {
if ( $this->restrictionStore->isProtected( $page, 'edit' ) &&
$this->permManager->getNamespaceRestrictionLevels(
$page->getNamespace()
) !== [ '' ]
) {
# Is the title semi-protected?
if ( $this->restrictionStore->isSemiProtected( $page ) ) {
$noticeMsg = 'semiprotectedpagewarning';
} else {
# Then it must be protected based on static groups (regular)
$noticeMsg = 'protectedpagewarning';
}
$messages->addWithKey(
$noticeMsg,
$this->getLogExtract( 'protect', $page, '', [ 'lim' => 1, 'msgKey' => [ $noticeMsg ] ] )
);
}
if ( $this->restrictionStore->isCascadeProtected( $page ) ) {
# Is this page under cascading protection from some source pages?
$tlCascadeSources = $this->restrictionStore->getCascadeProtectionSources( $page )[2];
if ( $tlCascadeSources ) {
$htmlList = '';
# Explain, and list the titles responsible
foreach ( $tlCascadeSources as $source ) {
$htmlList .= Html::rawElement( 'li', [], $this->linkRenderer->makeLink( $source ) );
}
$messages->addWithKey(
'cascadeprotectedwarning',
$localizer->msg( 'cascadeprotectedwarning', count( $tlCascadeSources ) )->parse() .
( $htmlList ? Html::rawElement( 'ul', [], $htmlList ) : '' ),
Html::warningBox( '$1', 'mw-cascadeprotectedwarning' )
);
}
}
if ( !$page->exists() && $this->restrictionStore->getRestrictions( $page, 'create' ) ) {
$messages->addWithKey(
'titleprotectedwarning',
$this->getLogExtract(
'protect', $page,
'',
[
'lim' => 1,
'showIfEmpty' => false,
'msgKey' => [ 'titleprotectedwarning' ],
'wrap' => "<div class=\"mw-titleprotectedwarning\">\n$1</div>"
]
)
);
}
}
private function addHeaderCopyrightWarning(
IntroMessageList $messages,
MessageLocalizer $localizer
): void {
$messages->add(
$localizer->msg( 'editpage-head-copy-warn' ),
"<div class='editpage-head-copywarn'>\n$1\n</div>"
);
}
}