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/*
Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef RawResource_h
#define RawResource_h
#include "core/CoreExport.h"
#include "core/fetch/Resource.h"
#include "core/fetch/ResourceClient.h"
#include "public/platform/WebDataConsumerHandle.h"
#include "wtf/WeakPtr.h"
#include <memory>
namespace blink {
class FetchRequest;
class RawResourceClient;
class ResourceFetcher;
class SubstituteData;
class CORE_EXPORT RawResource final : public Resource {
public:
using ClientType = RawResourceClient;
static RawResource* fetchSynchronously(FetchRequest&, ResourceFetcher*);
static RawResource* fetch(FetchRequest&, ResourceFetcher*);
static RawResource* fetchMainResource(FetchRequest&,
ResourceFetcher*,
const SubstituteData&);
static RawResource* fetchImport(FetchRequest&, ResourceFetcher*);
static RawResource* fetchMedia(FetchRequest&, ResourceFetcher*);
static RawResource* fetchTextTrack(FetchRequest&, ResourceFetcher*);
static RawResource* fetchManifest(FetchRequest&, ResourceFetcher*);
// Exposed for testing
static RawResource* create(const ResourceRequest& request, Type type) {
return new RawResource(request, type, ResourceLoaderOptions());
}
// FIXME: AssociatedURLLoader shouldn't be a DocumentThreadableLoader and
// therefore shouldn't use RawResource. However, it is, and it needs to be
// able to defer loading. This can be fixed by splitting CORS preflighting out
// of DocumentThreadableLoader.
void setDefersLoading(bool);
// Resource implementation
bool canReuse(const ResourceRequest&) const override;
bool willFollowRedirect(const ResourceRequest&,
const ResourceResponse&) override;
private:
class RawResourceFactory : public ResourceFactory {
public:
explicit RawResourceFactory(Resource::Type type) : ResourceFactory(type) {}
Resource* create(const ResourceRequest& request,
const ResourceLoaderOptions& options,
const String& charset) const override {
return new RawResource(request, m_type, options);
}
};
RawResource(const ResourceRequest&, Type, const ResourceLoaderOptions&);
// Resource implementation
void didAddClient(ResourceClient*) override;
void appendData(const char*, size_t) override;
bool shouldIgnoreHTTPStatusCodeErrors() const override {
return !isLinkPreload();
}
void willNotFollowRedirect() override;
void responseReceived(const ResourceResponse&,
std::unique_ptr<WebDataConsumerHandle>) override;
void setSerializedCachedMetadata(const char*, size_t) override;
void didSendData(unsigned long long bytesSent,
unsigned long long totalBytesToBeSent) override;
void didDownloadData(int) override;
void reportResourceTimingToClients(const ResourceTimingInfo&) override;
};
#if ENABLE(SECURITY_ASSERT)
inline bool isRawResource(const Resource& resource) {
Resource::Type type = resource.getType();
return type == Resource::MainResource || type == Resource::Raw ||
type == Resource::TextTrack || type == Resource::Media ||
type == Resource::Manifest || type == Resource::ImportResource;
}
#endif
inline RawResource* toRawResource(Resource* resource) {
SECURITY_DCHECK(!resource || isRawResource(*resource));
return static_cast<RawResource*>(resource);
}
class CORE_EXPORT RawResourceClient : public ResourceClient {
public:
static bool isExpectedType(ResourceClient* client) {
return client->getResourceClientType() == RawResourceType;
}
ResourceClientType getResourceClientType() const final {
return RawResourceType;
}
// The order of the callbacks is as follows:
// [Case 1] A successful load:
// 0+ redirectReceived() and/or dataSent()
// 1 responseReceived()
// 0-1 setSerializedCachedMetadata()
// 0+ dataReceived() or dataDownloaded(), but never both
// 1 notifyFinished() with errorOccurred() = false
// [Case 2] When redirect is blocked:
// 0+ redirectReceived() and/or dataSent()
// 1 redirectBlocked()
// 1 notifyFinished() with errorOccurred() = true
// [Case 3] Other failures:
// notifyFinished() with errorOccurred() = true is called at any time
// (unless notifyFinished() is already called).
// In all cases:
// No callbacks are made after notifyFinished() or
// removeClient() is called.
virtual void dataSent(Resource*,
unsigned long long /* bytesSent */,
unsigned long long /* totalBytesToBeSent */) {}
virtual void responseReceived(Resource*,
const ResourceResponse&,
std::unique_ptr<WebDataConsumerHandle>) {}
virtual void setSerializedCachedMetadata(Resource*, const char*, size_t) {}
virtual void dataReceived(Resource*,
const char* /* data */,
size_t /* length */) {}
virtual bool redirectReceived(Resource*,
const ResourceRequest&,
const ResourceResponse&) {
return true;
}
virtual void redirectBlocked() {}
virtual void dataDownloaded(Resource*, int) {}
virtual void didReceiveResourceTiming(Resource*, const ResourceTimingInfo&) {}
};
// Checks the sequence of callbacks of RawResourceClient. This can be used only
// when a RawResourceClient is added as a client to at most one RawResource.
class CORE_EXPORT RawResourceClientStateChecker final {
public:
RawResourceClientStateChecker();
~RawResourceClientStateChecker();
// Call before addClient()/removeClient() is called.
void willAddClient();
void willRemoveClient();
// Call RawResourceClientStateChecker::f() at the beginning of
// RawResourceClient::f().
void redirectReceived();
void redirectBlocked();
void dataSent();
void responseReceived();
void setSerializedCachedMetadata();
void dataReceived();
void dataDownloaded();
void notifyFinished(Resource*);
private:
enum State {
NotAddedAsClient,
Started,
RedirectBlocked,
ResponseReceived,
SetSerializedCachedMetadata,
DataReceived,
DataDownloaded,
NotifyFinished
};
State m_state;
};
} // namespace blink
#endif // RawResource_h
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