Add qrc protocol handler.

Support qrc resources in html. For example:
  <script type="text/javascript" src="qrc:///xx.js"></script>
  <image src="qrc:///xx.png"></image>

Change-Id: I490efb7cc300bf894659e79948b65729a12ad73d
Reviewed-by: Milian Wolff <milian.wolff@kdab.com>
Reviewed-by: Pierre Rossi <pierre.rossi@gmail.com>

6 files changed, 346 insertions, 2 deletions

diff --git a/src/core/core_gyp_generator.pro b/src/core/core_gyp_generator.pro
index 1cfcc4609..4388cdb1c 100644
--- a/src/core/core_gyp_generator.pro
+++ b/src/core/core_gyp_generator.pro
@@ -52,7 +52,9 @@ SOURCES = \
         web_contents_view_qt.cpp \
         web_engine_context.cpp \
         web_event_factory.cpp \
-        yuv_video_node.cpp
+        yuv_video_node.cpp \
+        qrc_protocol_handler_qt.cpp \
+        url_request_qrc_job_qt.cpp
 
 HEADERS = \
         backing_store_qt.h \
@@ -77,7 +79,9 @@ HEADERS = \
         web_contents_view_qt.h \
         web_engine_context.h \
         web_event_factory.h \
-        yuv_video_node.h
+        yuv_video_node.h \
+        qrc_protocol_handler_qt.h \
+        url_request_qrc_job_qt.h
 
 OUTPUT_DIR = $$getOutDir()/$$getConfigDir()
 target.files = $$OUTPUT_DIR/lib/lib$${TARGET}.so
diff --git a/src/core/qrc_protocol_handler_qt.cpp b/src/core/qrc_protocol_handler_qt.cpp
new file mode 100644
index 000000000..1a1266d78
--- /dev/null
+++ b/src/core/qrc_protocol_handler_qt.cpp
@@ -0,0 +1,61 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtWebEngine module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qrc_protocol_handler_qt.h"
+#include "url_request_qrc_job_qt.h"
+
+#include "net/base/net_errors.h"
+#include "net/url_request/url_request.h"
+#include "net/url_request/url_request_error_job.h"
+
+using namespace net;
+
+QrcProtocolHandlerQt::QrcProtocolHandlerQt()
+{
+}
+
+URLRequestJob *QrcProtocolHandlerQt::MaybeCreateJob(URLRequest *request, NetworkDelegate *networkDelegate) const
+{
+    if (!networkDelegate)
+        return new URLRequestErrorJob(request, Q_NULLPTR, ERR_ACCESS_DENIED);
+
+    return new URLRequestQrcJobQt(request, networkDelegate);
+}
diff --git a/src/core/qrc_protocol_handler_qt.h b/src/core/qrc_protocol_handler_qt.h
new file mode 100644
index 000000000..9fa22a0e3
--- /dev/null
+++ b/src/core/qrc_protocol_handler_qt.h
@@ -0,0 +1,68 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtWebEngine module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QRC_PROTOCOL_HANDLER_QT_H_
+#define QRC_PROTOCOL_HANDLER_QT_H_
+
+#include "net/url_request/url_request_job_factory.h"
+
+#include <QtCore/qcompilerdetection.h> // Needed for Q_DECL_OVERRIDE
+
+namespace net {
+
+class NetworkDelegate;
+class URLRequestJob;
+
+} // namespace
+
+// Implements a ProtocolHandler for qrc file jobs. If |network_delegate_| is NULL,
+// then all file requests will fail with ERR_ACCESS_DENIED.
+class QrcProtocolHandlerQt : public net::URLRequestJobFactory::ProtocolHandler {
+
+public:
+    QrcProtocolHandlerQt();
+    virtual net::URLRequestJob *MaybeCreateJob(net::URLRequest *request, net::NetworkDelegate *networkDelegate) const Q_DECL_OVERRIDE;
+
+private:
+  DISALLOW_COPY_AND_ASSIGN(QrcProtocolHandlerQt);
+};
+
+#endif // QRC_PROTOCOL_HANDLER_QT_H_
diff --git a/src/core/url_request_context_getter_qt.cpp b/src/core/url_request_context_getter_qt.cpp
index 99bf68b1c..933df845c 100644
--- a/src/core/url_request_context_getter_qt.cpp
+++ b/src/core/url_request_context_getter_qt.cpp
@@ -63,6 +63,9 @@
 #include "net/url_request/file_protocol_handler.h"
 
 #include "network_delegate_qt.h"
+#include "qrc_protocol_handler_qt.h"
+
+static const char kQrcSchemeQt[] = "qrc";
 
 using content::BrowserThread;
 
@@ -159,6 +162,7 @@ net::URLRequestContext *URLRequestContextGetterQt::GetURLRequestContext()
         m_jobFactory.reset(new net::URLRequestJobFactoryImpl());
         m_jobFactory->SetProtocolHandler(chrome::kDataScheme, new net::DataProtocolHandler());
         m_jobFactory->SetProtocolHandler(chrome::kFileScheme, new net::FileProtocolHandler());
+        m_jobFactory->SetProtocolHandler(kQrcSchemeQt, new QrcProtocolHandlerQt());
         m_urlRequestContext->set_job_factory(m_jobFactory.get());
     }
 
diff --git a/src/core/url_request_qrc_job_qt.cpp b/src/core/url_request_qrc_job_qt.cpp
new file mode 100644
index 000000000..ccdb4f9b6
--- /dev/null
+++ b/src/core/url_request_qrc_job_qt.cpp
@@ -0,0 +1,132 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtWebEngine module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "url_request_qrc_job_qt.h"
+
+#include "net/base/net_errors.h"
+#include "net/base/io_buffer.h"
+
+#include <QUrl>
+#include <QFileInfo>
+#include <QMimeDatabase>
+#include <QMimeType>
+
+using namespace net;
+
+URLRequestQrcJobQt::URLRequestQrcJobQt(URLRequest *request, NetworkDelegate *networkDelegate)
+    : URLRequestJob(request, networkDelegate)
+    , m_remainingBytes(0)
+    , m_weakFactory(this)
+{
+}
+
+URLRequestQrcJobQt::~URLRequestQrcJobQt()
+{
+    if (m_file.isOpen())
+        m_file.close();
+}
+
+void URLRequestQrcJobQt::Start()
+{
+    base::MessageLoop::current()->PostTask(FROM_HERE, base::Bind(&URLRequestQrcJobQt::startGetHead, m_weakFactory.GetWeakPtr()));
+}
+
+void URLRequestQrcJobQt::Kill()
+{
+    if (m_file.isOpen())
+        m_file.close();
+    m_weakFactory.InvalidateWeakPtrs();
+
+    URLRequestJob::Kill();
+}
+
+bool URLRequestQrcJobQt::GetMimeType(std::string *mimeType) const
+{
+    DCHECK(request_);
+    if (m_mimeType.size() > 0) {
+        *mimeType = m_mimeType;
+        return true;
+    }
+    return false;
+}
+
+bool URLRequestQrcJobQt::ReadRawData(IOBuffer *buf, int bufSize, int *bytesRead)
+{
+    DCHECK(bytesRead);
+    DCHECK_GE(m_remainingBytes, 0);
+    // File has been read finished.
+    if (!m_remainingBytes || !bufSize) {
+        *bytesRead = 0;
+        return true;
+    }
+    if (m_remainingBytes < bufSize)
+        bufSize = static_cast<int>(m_remainingBytes);
+    qint64 rv = m_file.read(buf->data(), bufSize);
+    if (rv >= 0) {
+        *bytesRead = static_cast<int>(rv);
+        m_remainingBytes -= rv;
+        DCHECK_GE(m_remainingBytes, 0);
+        return true;
+    } else {
+        NotifyDone(URLRequestStatus(URLRequestStatus::FAILED, ERR_FAILED));
+    }
+    return false;
+}
+
+void URLRequestQrcJobQt::startGetHead()
+{
+    // Get qrc file path.
+    QString qrcFilePath = ':' + QString::fromStdString(request_->url().path());
+    m_file.setFileName(qrcFilePath);
+    QFileInfo qrcFileInfo(m_file);
+    // Get qrc file mime type.
+    QMimeDatabase mimeDatabase;
+    QMimeType mimeType = mimeDatabase.mimeTypeForFile(qrcFileInfo);
+    m_mimeType = mimeType.name().toStdString();
+    // Open file
+    if (m_file.open(QIODevice::ReadOnly)) {
+        m_remainingBytes = m_file.size();
+        // Notify that the headers are complete
+        NotifyHeadersComplete();
+    } else {
+        NotifyStartError(URLRequestStatus(URLRequestStatus::FAILED, ERR_INVALID_URL));
+    }
+}
diff --git a/src/core/url_request_qrc_job_qt.h b/src/core/url_request_qrc_job_qt.h
new file mode 100644
index 000000000..b9c4ed222
--- /dev/null
+++ b/src/core/url_request_qrc_job_qt.h
@@ -0,0 +1,75 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtWebEngine module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef URL_REQUEST_QRC_JOB_QT_H_
+#define URL_REQUEST_QRC_JOB_QT_H_
+
+#include "net/url_request/url_request.h"
+#include "net/url_request/url_request_job.h"
+
+#include <QtCore/qcompilerdetection.h> // Needed for Q_DECL_OVERRIDE
+#include <QFile>
+
+// A request job that handles reading qrc file URLs
+class URLRequestQrcJobQt : public net::URLRequestJob {
+
+public:
+    URLRequestQrcJobQt(net::URLRequest *request, net::NetworkDelegate *networkDelegate);
+    virtual void Start() Q_DECL_OVERRIDE;
+    virtual void Kill() Q_DECL_OVERRIDE;
+    virtual bool ReadRawData(net::IOBuffer *buf, int bufSize, int *bytesRead) Q_DECL_OVERRIDE;
+    virtual bool GetMimeType(std::string *mimeType) const Q_DECL_OVERRIDE;
+
+protected:
+    virtual ~URLRequestQrcJobQt();
+    // Get file mime type and try open file on a background thread.
+    void startGetHead();
+
+private:
+    qint64 m_remainingBytes;
+    QFile m_file;
+    std::string m_mimeType;
+    base::WeakPtrFactory<URLRequestQrcJobQt> m_weakFactory;
+
+    DISALLOW_COPY_AND_ASSIGN(URLRequestQrcJobQt);
+};
+
+#endif // URL_REQUEST_QRC_JOB_QT_H_