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# include "iframeschemehandler.hh"
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# include <QTextCodec>
IframeSchemeHandler : : IframeSchemeHandler ( QObject * parent ) : QWebEngineUrlSchemeHandler ( parent ) {
}
void IframeSchemeHandler : : requestStarted ( QWebEngineUrlRequestJob * requestJob )
{
QUrl url = requestJob - > requestUrl ( ) ;
// website dictionary iframe url
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url = QUrl ( Utils : : Url : : queryItemValue ( url , " url " ) ) ;
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QNetworkRequest request ;
request . setUrl ( url ) ;
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request . setAttribute ( QNetworkRequest : : RedirectPolicyAttribute , 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 " ;
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 ) ;
}
}
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QBuffer * buffer = new QBuffer ( requestJob ) ;
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QByteArray replyData = reply - > readAll ( ) ;
QString articleString ;
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QTextCodec * codec = QTextCodec : : codecForUtfText ( replyData , QTextCodec : : codecForName ( codecName . toUtf8 ( ) ) ) ;
if ( codec )
articleString = codec - > toUnicode ( replyData ) ;
else
articleString = QString : : fromUtf8 ( replyData ) ;
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// Handle reply data
// 404 response may have response body.
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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//work around to fix QTBUG-106573
requestJob - > redirect ( url ) ;
return ;
}
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QString emptyHtml = QString ( " <html><body>%1</body></html> " ) . arg ( reply - > errorString ( ) ) ;
buffer - > setData ( emptyHtml . toUtf8 ( ) ) ;
requestJob - > reply ( contentType , buffer ) ;
return ;
}
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// Change links from relative to absolute
QString root = reply - > url ( ) . scheme ( ) + " :// " + reply - > url ( ) . host ( ) ;
QString base = root + reply - > url ( ) . path ( ) ;
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QRegularExpression baseTag ( " <base \\ s+.*?> " ,
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QRegularExpression : : CaseInsensitiveOption | QRegularExpression : : DotMatchesEverythingOption ) ;
QString baseTagHtml = " <base href= \" " + base + " \" > " ;
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QString depressionFocus = " <script type= \" application/javascript \" > HTMLElement.prototype.focus=function(){console.log( \" focus() has been disabled. \" );}</script> "
" <script type= \" text/javascript \" src= \" qrc:///scripts/iframeResizer.contentWindow.min.js \" ></script> "
" <script type= \" text/javascript \" src= \" qrc:///scripts/iframe-defer.js \" ></script> " ;
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// remove existed base tag
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articleString . remove ( baseTag ) ;
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QRegularExpression headTag ( " <head \\ b.*?> " ,
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QRegularExpression : : CaseInsensitiveOption
| QRegularExpression : : DotMatchesEverythingOption ) ;
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auto match = headTag . match ( articleString , 0 ) ;
if ( match . hasMatch ( ) )
{
articleString . insert ( match . capturedEnd ( ) , baseTagHtml ) ;
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articleString . insert ( match . capturedEnd ( ) , depressionFocus ) ;
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}
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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 ) ;
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articleString . insert ( 0 , depressionFocus ) ;
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}
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buffer - > setData ( articleString . toUtf8 ( ) ) ;
//"text/html;charset=utf-8" will be treated as text/plain in Linux .
# if defined( Q_OS_WIN32 ) || defined( Q_OS_MAC )
requestJob - > reply ( contentType , buffer ) ;
# else
requestJob - > reply ( " text/html " , buffer ) ;
# endif
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} ;
connect ( reply , & QNetworkReply : : finished , requestJob , finishAction ) ;
connect ( requestJob , & QObject : : destroyed , reply , & QObject : : deleteLater ) ;
}
