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<?php
/**
* Hooks for the spam blacklist extension
*/
class SpamBlacklistHooks {
/**
* Hook function for EditFilterMergedContent
*
* @param IContextSource $context
* @param Content $content
* @param Status $status
* @param string $summary
* @param User $user
* @param bool $minoredit
*
* @return bool
*/
static function filterMergedContent( IContextSource $context, Content $content, Status $status, $summary, User $user, $minoredit ) {
$title = $context->getTitle();
if ( isset( $title->spamBlackListFiltered ) && $title->spamBlackListFiltered ) {
// already filtered
return true;
}
// get the link from the not-yet-saved page content.
// no need to generate html to get external links
$pout = $content->getParserOutput( $title, null, null, false );
$links = array_keys( $pout->getExternalLinks() );
// HACK: treat the edit summary as a link
if ( $summary !== '' ) {
$links[] = $summary;
}
$spamObj = BaseBlacklist::getInstance( 'spam' );
$matches = $spamObj->filter( $links, $title );
if ( $matches !== false ) {
$status->fatal( 'spamprotectiontext' );
foreach ( $matches as $match ) {
$status->fatal( 'spamprotectionmatch', $match );
}
}
// Always return true, EditPage will look at $status->isOk().
return true;
}
/**
* Hook function for APIEditBeforeSave.
* This allows blacklist matches to be reported directly in the result structure
* of the API call.
*
* @param $editPage EditPage
* @param $text string
* @param $resultArr array
* @return bool
*/
static function filterAPIEditBeforeSave( $editPage, $text, &$resultArr ) {
$title = $editPage->mArticle->getTitle();
// get the links from the not-yet-saved page content.
$content = ContentHandler::makeContent(
$text,
$editPage->getTitle(),
$editPage->contentModel,
$editPage->contentFormat
);
$editInfo = $editPage->mArticle->prepareContentForEdit( $content, null, null, $editPage->contentFormat );
$pout = $editInfo->output;
$links = array_keys( $pout->getExternalLinks() );
// HACK: treat the edit summary as a link
$summary = $editPage->summary;
if ( $summary !== '' ) {
$links[] = $summary;
}
$spamObj = BaseBlacklist::getInstance( 'spam' );
$matches = $spamObj->filter( $links, $title );
if ( $matches !== false ) {
$resultArr['spamblacklist'] = implode( '|', $matches );
}
// mark the title, so filterMergedContent can skip it.
$title->spamBlackListFiltered = true;
// return convention for hooks is the inverse of $wgFilterCallback
return ( $matches === false );
}
/**
* Verify that the user can send emails
*
* @param $user User
* @param $hookErr array
* @return bool
*/
public static function userCanSendEmail( &$user, &$hookErr ) {
/** @var $blacklist EmailBlacklist */
$blacklist = BaseBlacklist::getInstance( 'email' );
if ( $blacklist->checkUser( $user ) ) {
return true;
}
$hookErr = array( 'spam-blacklisted-email', 'spam-blacklisted-email-text', null );
return false;
}
/**
* Processes new accounts for valid email addresses
*
* @param $user User
* @param $abortError
* @return bool
*/
public static function abortNewAccount( $user, &$abortError ) {
/** @var $blacklist EmailBlacklist */
$blacklist = BaseBlacklist::getInstance( 'email' );
if ( $blacklist->checkUser( $user ) ) {
return true;
}
$abortError = wfMessage( 'spam-blacklisted-email-signup' )->escaped();
return false;
}
/**
* Hook function for EditFilter
* Confirm that a local blacklist page being saved is valid,
* and toss back a warning to the user if it isn't.
*
* @param $editPage EditPage
* @param $text string
* @param $section string
* @param $hookError string
* @return bool
*/
static function validate( $editPage, $text, $section, &$hookError ) {
$thisPageName = $editPage->mTitle->getPrefixedDBkey();
if( !BaseBlacklist::isLocalSource( $editPage->mTitle ) ) {
wfDebugLog( 'SpamBlacklist', "Spam blacklist validator: [[$thisPageName]] not a local blacklist\n" );
return true;
}
$type = BaseBlacklist::getTypeFromTitle( $editPage->mTitle );
if ( $type === false ) {
return true;
}
$lines = explode( "\n", $text );
$badLines = SpamRegexBatch::getBadLines( $lines, BaseBlacklist::getInstance( $type ) );
if( $badLines ) {
wfDebugLog( 'SpamBlacklist', "Spam blacklist validator: [[$thisPageName]] given invalid input lines: " .
implode( ', ', $badLines ) . "\n" );
$badList = "*<code>" .
implode( "</code>\n*<code>",
array_map( 'wfEscapeWikiText', $badLines ) ) .
"</code>\n";
$hookError =
"<div class='errorbox'>" .
wfMessage( 'spam-invalid-lines' )->numParams( $badLines )->text() . "<br />" .
$badList .
"</div>\n" .
"<br clear='all' />\n";
} else {
wfDebugLog( 'SpamBlacklist', "Spam blacklist validator: [[$thisPageName]] ok or empty blacklist\n" );
}
return true;
}
/**
* Hook function for PageContentSaveComplete
* Clear local spam blacklist caches on page save.
*
* @param Page $wikiPage
* @param User $user
* @param Content $content
* @param string $summary
* @param bool $isMinor
* @param bool $isWatch
* @param string $section
* @param int $flags
* @param int $revision
* @param Status $status
* @param int $baseRevId
*
* @return bool
*/
static function pageSaveContent(
Page $wikiPage,
User $user,
Content $content,
$summary,
$isMinor,
$isWatch,
$section,
$flags,
$revision,
Status $status,
$baseRevId
) {
if( !BaseBlacklist::isLocalSource( $wikiPage->getTitle() ) ) {
return true;
}
global $wgMemc, $wgDBname;
// This sucks because every Blacklist needs to be cleared
foreach ( BaseBlacklist::getBlacklistTypes() as $type => $class ) {
$wgMemc->delete( "$wgDBname:{$type}_blacklist_regexes" );
}
return true;
}
}
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