2022-05-13 16:00:23 +00:00
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#include "iframeschemehandler.h"
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#include <QTextCodec>
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IframeSchemeHandler::IframeSchemeHandler(QObject * parent):QWebEngineUrlSchemeHandler(parent){
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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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// website dictionary iframe url
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url = QUrl( Utils::Url::queryItemValue( url, "url" ) );
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QNetworkRequest request;
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request.setUrl( url );
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2022-05-16 14:10:12 +00:00
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request.setAttribute(QNetworkRequest::RedirectPolicyAttribute,QNetworkRequest::RedirectPolicy::NoLessSafeRedirectPolicy);
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2022-05-13 16:00:23 +00:00
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QNetworkReply * reply = mgr.get( request );
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2022-05-16 14:10:12 +00:00
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2022-05-13 16:00:23 +00:00
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auto finishAction = [ = ]() -> void
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{
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2022-07-09 02:37:40 +00:00
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QByteArray contentType = "text/html;charset=UTF-8";
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auto contentTypeHeader = reply->header( QNetworkRequest::ContentTypeHeader );
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if( contentTypeHeader.isValid() )
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contentType = contentTypeHeader.toByteArray();
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2022-05-13 16:00:23 +00:00
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2022-07-09 02:37:40 +00:00
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QBuffer * buffer = new QBuffer( requestJob );
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// Handle reply data
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if( reply->error() != QNetworkReply::NoError )
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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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2022-05-13 16:00:23 +00:00
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QByteArray replyData = reply->readAll();
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QString articleString;
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2022-05-16 14:10:12 +00:00
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QTextCodec * codec = QTextCodec::codecForHtml( replyData, QTextCodec::codecForName( "UTF-8" ) );
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articleString = codec->toUnicode( replyData );
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2022-05-13 16:00:23 +00:00
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// Change links from relative to absolute
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QString root = reply->url().scheme() + "://" + reply->url().host();
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QString base = root + reply->url().path();
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while( !base.isEmpty() && !base.endsWith( "/" ) )
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base.chop( 1 );
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QRegularExpression tags( "<\\s*(a|link|img|script)\\s+[^>]*(src|href)\\s*=\\s*['\"][^>]+>",
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QRegularExpression::CaseInsensitiveOption );
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QRegularExpression links( "\\b(src|href)\\s*=\\s*(['\"])([^'\"]+['\"])",
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QRegularExpression::CaseInsensitiveOption );
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int pos = 0;
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QString articleNewString;
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QRegularExpressionMatchIterator it = tags.globalMatch( articleString );
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while( it.hasNext() )
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{
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QRegularExpressionMatch match = it.next();
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articleNewString += articleString.mid( pos, match.capturedStart() - pos );
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pos = match.capturedEnd();
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QString tag = match.captured();
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QRegularExpressionMatch match_links = links.match( tag );
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if( !match_links.hasMatch() )
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{
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articleNewString += tag;
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continue;
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}
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QString url = match_links.captured( 3 );
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if( url.indexOf( ":/" ) >= 0 || url.indexOf( "data:" ) >= 0 || url.indexOf( "mailto:" ) >= 0 ||
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url.startsWith( "#" ) || url.startsWith( "javascript:" ) )
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{
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// External link, anchor or base64-encoded data
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articleNewString += tag;
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continue;
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}
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QString newUrl = match_links.captured( 1 ) + "=" + match_links.captured( 2 );
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if( url.startsWith( "//" ) )
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newUrl += reply->url().scheme() + ":";
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else if( url.startsWith( "/" ) )
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newUrl += root;
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else
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newUrl += base;
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newUrl += match_links.captured( 3 );
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tag.replace( match_links.capturedStart(), match_links.capturedLength(), newUrl );
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articleNewString += tag;
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}
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if( pos )
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{
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articleNewString += articleString.mid( pos );
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articleString = articleNewString;
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articleNewString.clear();
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}
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2022-07-09 02:37:40 +00:00
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buffer->setData(codec->fromUnicode(articleString));
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2022-05-17 13:02:49 +00:00
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requestJob->reply(contentType , buffer );
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2022-05-13 16:00:23 +00:00
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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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