3 files changed, 82 insertions, 1 deletions
diff --git a/src/nam.cpp b/src/nam.cpp
new file mode 100644
index 0000000..2f3fdd1
--- /dev/null
+++ b/src/nam.cpp
@@ -0,0 +1,42 @@
+#include "nam.h"
+
+#include <QCoreApplication>
+#include <QDebug>
+
+SlxDisabledNetworkReply::SlxDisabledNetworkReply(QObject *parent, const QNetworkRequest &req,
+												 QNetworkAccessManager::Operation op)
+	:   QNetworkReply(parent)
+{
+	setRequest(req);
+	setUrl(req.url());
+	setOperation(op);
+	setFinished(true);
+	qRegisterMetaType<QNetworkReply::NetworkError>();
+	QString msg = QCoreApplication::translate("QNetworkAccessManager",
+											  "Network access is disabled.");
+	setError(UnknownNetworkError, msg);
+	QMetaObject::invokeMethod(this, "error", Qt::QueuedConnection,
+							  Q_ARG(QNetworkReply::NetworkError, UnknownNetworkError));
+	QMetaObject::invokeMethod(this, "finished", Qt::QueuedConnection);
+}
+
+QNetworkReply* SlxNetworkAccessManager::createRequest(QNetworkAccessManager::Operation op,
+									   const QNetworkRequest &req, QIODevice *outgoingData)
+{
+	const QUrl url(req.url());
+	//qDebug() << url;
+	bool ok;
+	if (url.isLocalFile()) {
+		ok = true;
+	} else if (url.scheme() == QLatin1String("qrc") || url.scheme() == QLatin1String("data")) {
+		ok = true;
+	} else if (url.host().isEmpty()) {
+		ok = true;
+	} else {
+		ok = (_list.match(url.toDisplayString(QUrl::NormalizePathSegments)).hasMatch() == _isWhitelist);
+	}
+	if (!ok) {
+		return new SlxDisabledNetworkReply(this, req, op);
+	}
+	return QNetworkAccessManager::createRequest(op, req, outgoingData);
+}
diff --git a/src/nam.h b/src/nam.h
new file mode 100644
index 0000000..0036904
--- /dev/null
+++ b/src/nam.h
@@ -0,0 +1,39 @@
+#ifndef NAM_H_
+#define NAM_H_
+
+#include <QNetworkAccessManager>
+#include <QRegularExpression>
+#include <QNetworkReply>
+
+/**
+ * Block certain requests based on URL
+ */
+class SlxNetworkAccessManager : public QNetworkAccessManager
+{
+Q_OBJECT
+public:
+	SlxNetworkAccessManager(QRegularExpression list, bool isWhitelist, QObject *parent = nullptr)
+		: QNetworkAccessManager(parent), _list(list), _isWhitelist(isWhitelist) {}
+protected:
+	QNetworkReply* createRequest(QNetworkAccessManager::Operation op,
+				  const QNetworkRequest &originalReq, QIODevice *outgoingData = nullptr) override;
+private:
+	QRegularExpression _list;
+	bool _isWhitelist;
+};
+
+
+class SlxDisabledNetworkReply : public QNetworkReply
+{
+	Q_OBJECT
+public:
+	SlxDisabledNetworkReply(QObject *parent, const QNetworkRequest &req,
+							QNetworkAccessManager::Operation op);
+
+	~SlxDisabledNetworkReply() {}
+	void abort() override { }
+protected:
+	qint64 readData(char *, qint64) override { return -1; }
+};
+
+#endif
diff --git a/src/slxbrowser.cpp b/src/slxbrowser.cpp
index 13ed326..aee94b2 100644
--- a/src/slxbrowser.cpp
+++ b/src/slxbrowser.cpp
@@ -208,7 +208,7 @@ static QRegularExpression urlListToRegExp(const QStringList &list)
 	for (const QString &str : list) {
 		QString mangled;
 		if (str.contains(QLatin1String("//"))) {
-				mangled = str;
+			mangled = str;
 		} else if (str.contains(QLatin1Char('/')) || str.contains(QLatin1String("**"))) {
 			mangled = "*//" + str;
 		} else {