Add support for registerProtocolHandler

Extend initialization of URLRequestContextGetterQt to create a
content::ProtocolHandlerRegistry for each content::BrowserContext and add the
registry's URL request interceptor to the front of the interceptor chain.

Implement methods in WebContentsDelegateQt to add/remove protocol handlers
to/from the ProtocolHandlerRegistry.

Add permission request signal and classes for core, quick and widgets.

Add widgets autotest.

Add signal handlers to quicknanobrowser and simplebrowser.

Task-number: QTBUG-62783
Change-Id: I808e7eb9a1cb4d7216686deed4895de14fe46310
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

3 files changed, 72 insertions, 0 deletions

diff --git a/tests/auto/quick/publicapi/tst_publicapi.cpp b/tests/auto/quick/publicapi/tst_publicapi.cpp
index 032324e45..52d8a0b41 100644
--- a/tests/auto/quick/publicapi/tst_publicapi.cpp
+++ b/tests/auto/quick/publicapi/tst_publicapi.cpp
@@ -67,6 +67,7 @@ static QList<const QMetaObject *> typesToCheck = QList<const QMetaObject *>()
     << &QQuickWebEngineSettings::staticMetaObject
     << &QQuickWebEngineFullScreenRequest::staticMetaObject
     << &QQuickWebEngineQuotaPermissionRequest::staticMetaObject
+    << &QQuickWebEngineRegisterProtocolHandlerPermissionRequest::staticMetaObject
     << &QQuickWebEngineSingleton::staticMetaObject
     << &QQuickWebEngineAuthenticationDialogRequest::staticMetaObject
     << &QQuickWebEngineJavaScriptDialogRequest::staticMetaObject
@@ -295,6 +296,10 @@ static QStringList expectedAPI = QStringList()
     << "QQuickWebEngineQuotaPermissionRequest.origin --> QUrl"
     << "QQuickWebEngineQuotaPermissionRequest.reject() --> void"
     << "QQuickWebEngineQuotaPermissionRequest.requestedSize --> qlonglong"
+    << "QQuickWebEngineRegisterProtocolHandlerPermissionRequest.accept() --> void"
+    << "QQuickWebEngineRegisterProtocolHandlerPermissionRequest.origin --> QUrl"
+    << "QQuickWebEngineRegisterProtocolHandlerPermissionRequest.protocol --> QString"
+    << "QQuickWebEngineRegisterProtocolHandlerPermissionRequest.reject() --> void"
     << "QQuickWebEngineScript.ApplicationWorld --> ScriptWorldId"
     << "QQuickWebEngineScript.Deferred --> InjectionPoint"
     << "QQuickWebEngineScript.DocumentCreation --> InjectionPoint"
@@ -653,6 +658,7 @@ static QStringList expectedAPI = QStringList()
     << "QQuickWebEngineView.quotaPermissionRequested(QQuickWebEngineQuotaPermissionRequest) --> void"
     << "QQuickWebEngineView.recentlyAudible --> bool"
     << "QQuickWebEngineView.recentlyAudibleChanged(bool) --> void"
+    << "QQuickWebEngineView.registerProtocolHandlerPermissionRequested(QQuickWebEngineRegisterProtocolHandlerPermissionRequest) --> void"
     << "QQuickWebEngineView.reload() --> void"
     << "QQuickWebEngineView.reloadAndBypassCache() --> void"
     << "QQuickWebEngineView.renderProcessTerminated(RenderProcessTerminationStatus,int) --> void"
diff --git a/tests/auto/widgets/qwebenginepage/qwebenginepage.pro b/tests/auto/widgets/qwebenginepage/qwebenginepage.pro
index 47c09e1ce..8e7453827 100644
--- a/tests/auto/widgets/qwebenginepage/qwebenginepage.pro
+++ b/tests/auto/widgets/qwebenginepage/qwebenginepage.pro
@@ -1,4 +1,5 @@
 include(../tests.pri)
+include(../../shared/http.pri)
 QT *= core-private
 
 qtConfig(webengine-printing-and-pdf): DEFINES+=QWEBENGINEPAGE_PDFPRINTINGENABLED
diff --git a/tests/auto/widgets/qwebenginepage/tst_qwebenginepage.cpp b/tests/auto/widgets/qwebenginepage/tst_qwebenginepage.cpp
index a32d96b3a..fbed89dd3 100644
--- a/tests/auto/widgets/qwebenginepage/tst_qwebenginepage.cpp
+++ b/tests/auto/widgets/qwebenginepage/tst_qwebenginepage.cpp
@@ -40,6 +40,7 @@
 #include <QtTest/QtTest>
 #include <QTextCharFormat>
 #include <QWebChannel>
+#include <httpserver.h>
 #include <qnetworkcookiejar.h>
 #include <qnetworkreply.h>
 #include <qnetworkrequest.h>
@@ -49,6 +50,7 @@
 #include <qwebenginepage.h>
 #include <qwebengineprofile.h>
 #include <qwebenginequotapermissionrequest.h>
+#include <qwebengineregisterprotocolhandlerpermissionrequest.h>
 #include <qwebenginescript.h>
 #include <qwebenginescriptcollection.h>
 #include <qwebenginesettings.h>
@@ -210,6 +212,8 @@ private Q_SLOTS:
     void viewSourceURL_data();
     void viewSourceURL();
     void proxyConfigWithUnexpectedHostPortPair();
+    void registerProtocolHandler_data();
+    void registerProtocolHandler();
 
 private:
     static QPoint elementCenter(QWebEnginePage *page, const QString &id);
@@ -4202,6 +4206,67 @@ void tst_QWebEnginePage::proxyConfigWithUnexpectedHostPortPair()
     QTRY_COMPARE(loadFinishedSpy.count(), 1);
 }
 
+void tst_QWebEnginePage::registerProtocolHandler_data()
+{
+    QTest::addColumn<bool>("permission");
+    QTest::newRow("accept") << true;
+    QTest::newRow("reject") << false;
+}
+
+void tst_QWebEnginePage::registerProtocolHandler()
+{
+    QFETCH(bool, permission);
+
+    HttpServer server;
+    QWebEnginePage page;
+    QSignalSpy loadSpy(&page, &QWebEnginePage::loadFinished);
+    QSignalSpy permissionSpy(&page, &QWebEnginePage::registerProtocolHandlerPermissionRequested);
+
+    page.setUrl(server.url("/"));
+    auto rr1 = waitForRequest(&server);
+    QVERIFY(rr1);
+    rr1->setResponseBody(QByteArrayLiteral("<html><body><a id=\"link\" href=\"mailto:foo@bar.com\">some text here</a></body></html>"));
+    rr1->sendResponse();
+    auto rr2 = waitForRequest(&server);
+    QVERIFY(rr2);
+    QCOMPARE(rr2->requestMethod(), QByteArrayLiteral("GET"));
+    QCOMPARE(rr2->requestPath(), QByteArrayLiteral("/favicon.ico"));
+    rr2->setResponseStatus(404);
+    rr2->sendResponse();
+    QTRY_COMPARE(loadSpy.count(), 1);
+    QCOMPARE(loadSpy.takeFirst().value(0).toBool(), true);
+
+    QString callFormat = QStringLiteral("window.navigator.registerProtocolHandler(\"%1\", \"%2\", \"%3\")");
+    QString protocol = QStringLiteral("mailto");
+    QString url = server.url("/mail").toString() + QStringLiteral("?uri=%s");
+    QString title;
+    QString call = callFormat.arg(protocol).arg(url).arg(title);
+    page.runJavaScript(call);
+
+    QTRY_COMPARE(permissionSpy.count(), 1);
+    auto request = permissionSpy.takeFirst().value(0).value<QWebEngineRegisterProtocolHandlerPermissionRequest>();
+    QCOMPARE(request.origin(), QUrl(url));
+    QCOMPARE(request.protocol(), protocol);
+    if (permission)
+        request.accept();
+    else
+        request.reject();
+
+    page.runJavaScript(QStringLiteral("document.getElementById(\"link\").click()"));
+
+    std::unique_ptr<HttpReqRep> rr3;
+    if (permission) {
+        rr3 = waitForRequest(&server);
+        QVERIFY(rr3);
+        QCOMPARE(rr3->requestMethod(), QByteArrayLiteral("GET"));
+        QCOMPARE(rr3->requestPath(), QByteArrayLiteral("/mail?uri=mailto%3Afoo%40bar.com"));
+        rr3->sendResponse();
+    }
+
+    QTRY_COMPARE(loadSpy.count(), 1);
+    QCOMPARE(loadSpy.takeFirst().value(0).toBool(), permission);
+}
+
 static QByteArrayList params = {QByteArrayLiteral("--use-fake-device-for-media-stream")};
 W_QTEST_MAIN(tst_QWebEnginePage, params)