#include "iframeschemehandler.hh" #include IframeSchemeHandler::IframeSchemeHandler( QObject * parent ): QWebEngineUrlSchemeHandler( parent ) { } void IframeSchemeHandler::requestStarted( QWebEngineUrlRequestJob * requestJob ) { QUrl url = requestJob->requestUrl(); // website dictionary iframe url url = QUrl( Utils::Url::queryItemValue( url, "url" ) ); QNetworkRequest request; request.setUrl( url ); request.setAttribute( QNetworkRequest::RedirectPolicyAttribute, QNetworkRequest::RedirectPolicy::NoLessSafeRedirectPolicy ); QNetworkReply * reply = mgr.get( request ); auto finishAction = [ = ]() { QByteArray contentType = "text/html"; QString codecName; const auto ctHeader = reply->header( QNetworkRequest::ContentTypeHeader ); if ( ctHeader.isValid() ) { contentType = ctHeader.toByteArray(); const auto ct = ctHeader.toString(); const auto index = ct.indexOf( "charset=" ); if ( index > -1 ) { codecName = ct.mid( index + 8 ); } } auto buffer = new QBuffer( requestJob ); QByteArray replyData = reply->readAll(); QString articleString; QTextCodec * codec = QTextCodec::codecForUtfText( replyData, QTextCodec::codecForName( codecName.toUtf8() ) ); if ( codec ) articleString = codec->toUnicode( replyData ); else articleString = QString::fromUtf8( replyData ); // Handle reply data // 404 response may have response body. if ( reply->error() != QNetworkReply::NoError && articleString.isEmpty() ) { if ( reply->error() == QNetworkReply::ContentNotFoundError ) { buffer->deleteLater(); //work around to fix QTBUG-106573 requestJob->redirect( url ); return; } QString emptyHtml = QString( "%1" ).arg( reply->errorString() ); buffer->setData( emptyHtml.toUtf8() ); requestJob->reply( contentType, buffer ); return; } // Change links from relative to absolute QString root = reply->url().scheme() + "://" + reply->url().host(); QString base = root + reply->url().path(); QRegularExpression baseTag( R"EOF()EOF", QRegularExpression::CaseInsensitiveOption | QRegularExpression::DotMatchesEverythingOption ); if ( const auto match = baseTag.match( articleString ); match.hasMatch() ) { base = reply->url().resolved( match.captured( 1 ) ).url(); } QString baseTagHtml = QString( R"()" ).arg( base ); QString depressionFocus = R"( )"; articleString.remove( baseTag ); articleString.replace( "window.location", "window.location;_window_location" ); QRegularExpression headTag( R"()", QRegularExpression::CaseInsensitiveOption | QRegularExpression::DotMatchesEverythingOption ); auto match = headTag.match( articleString ); if ( match.hasMatch() ) { articleString.insert( match.capturedEnd(), baseTagHtml ); articleString.insert( match.capturedEnd(), depressionFocus ); } else { // the html contain no head element // just insert at the beginning of the html ,and leave it at the mercy of browser(chrome webengine) articleString.insert( 0, baseTagHtml ); articleString.insert( 0, depressionFocus ); } buffer->setData( articleString.toUtf8() ); #if QT_VERSION >= QT_VERSION_CHECK( 6, 0, 0 ) requestJob->reply( "text/html; charset=utf-8", buffer ); #else #if defined( Q_OS_WIN32 ) || defined( Q_OS_MAC ) requestJob->reply( contentType, buffer ); #else requestJob->reply( "text/html", buffer ); #endif #endif }; connect( reply, &QNetworkReply::finished, requestJob, finishAction ); connect( requestJob, &QObject::destroyed, reply, &QObject::deleteLater ); }