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#include "iconv.hh" |
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#include "iframeschemehandler.hh" |
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#include <QWebEngineUrlRequestJob> |
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IframeSchemeHandler::IframeSchemeHandler( QObject * parent ): |
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QWebEngineUrlSchemeHandler( parent ) |
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{ |
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} |
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void IframeSchemeHandler::requestStarted( QWebEngineUrlRequestJob * requestJob ) |
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{ |
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QUrl url = requestJob->requestUrl(); |
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if ( url.scheme().startsWith( Config::WEBSITE_PROXY_PREFIX ) ) { |
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url.setScheme( url.scheme().mid( 7 ) ); |
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} |
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QNetworkRequest request; |
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request.setUrl( url ); |
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request.setAttribute( QNetworkRequest::RedirectPolicyAttribute, |
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QNetworkRequest::RedirectPolicy::NoLessSafeRedirectPolicy ); |
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QNetworkReply * reply = mgr.get( request ); |
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auto finishAction = [ = ]() { |
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QByteArray contentType = "text/html"; |
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QString codecName; |
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const auto ctHeader = reply->header( QNetworkRequest::ContentTypeHeader ); |
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if ( ctHeader.isValid() ) { |
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contentType = ctHeader.toByteArray(); |
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const auto ct = ctHeader.toString(); |
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const auto index = ct.indexOf( "charset=" ); |
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if ( index > -1 ) { |
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codecName = ct.mid( index + 8 ); |
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} |
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} |
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auto buffer = new QBuffer( requestJob ); |
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QByteArray replyData = reply->readAll(); |
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QString articleString; |
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auto encoding = Iconv::findValidEncoding( { codecName } ); |
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if ( !encoding.isEmpty() ) { |
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articleString = Iconv::toQString( encoding.toUtf8().constData(), replyData.data(), replyData.size() ); |
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} |
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else { |
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articleString = QString::fromUtf8( replyData ); |
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} |
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if ( reply->error() != QNetworkReply::NoError && articleString.isEmpty() ) { |
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if ( reply->error() == QNetworkReply::ContentNotFoundError ) { |
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buffer->deleteLater(); |
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requestJob->redirect( url ); |
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return; |
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} |
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QString emptyHtml = QString( "<html><body>%1</body></html>" ).arg( reply->errorString() ); |
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buffer->setData( emptyHtml.toUtf8() ); |
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requestJob->reply( contentType, buffer ); |
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return; |
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} |
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QString root = reply->url().scheme() + "://" + reply->url().host(); |
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if ( reply->url().port() != 80 && reply->url().port() != 443 && reply->url().port() != -1 ) { |
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root = root + ":" + QString::number( reply->url().port() ); |
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} |
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QString base = root + reply->url().path(); |
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QRegularExpression baseTag( R"EOF(<base\s+href=["'](.*?)["'].*?>)EOF", |
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QRegularExpression::CaseInsensitiveOption |
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| QRegularExpression::DotMatchesEverythingOption ); |
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if ( const auto match = baseTag.match( articleString ); match.hasMatch() ) { |
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base = reply->url().resolved( QUrl( match.captured( 1 ) ) ).url(); |
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} |
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QString baseTagHtml = QString( R"(<base href="%1">)" ).arg( base ); |
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QString depressionFocus = |
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R"(<script type="application/javascript"> HTMLElement.prototype.focus=function(){console.log("focus() has been disabled.");}</script> |
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<script type="text/javascript" src="qrc:///scripts/iframeResizer.contentWindow.min.js"> |
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</script><script type="text/javascript" src="qrc:///scripts/iframe-defer.js"></script>)"; |
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articleString.remove( baseTag ); |
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articleString.replace( "window.location", "window.location;_window_location" ); |
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QRegularExpression headTag( R"(<head\b.*?>)", |
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QRegularExpression::CaseInsensitiveOption |
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| QRegularExpression::DotMatchesEverythingOption ); |
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auto match = headTag.match( articleString ); |
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if ( match.hasMatch() ) { |
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articleString.insert( match.capturedEnd(), baseTagHtml ); |
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articleString.insert( match.capturedEnd(), depressionFocus ); |
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} |
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else { |
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articleString.insert( 0, baseTagHtml ); |
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articleString.insert( 0, depressionFocus ); |
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} |
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buffer->setData( articleString.toUtf8() ); |
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requestJob->reply( "text/html; charset=utf-8", buffer ); |
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}; |
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connect( reply, &QNetworkReply::finished, requestJob, finishAction ); |
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connect( requestJob, &QObject::destroyed, reply, &QObject::deleteLater ); |
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} |
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