1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/*
* Copyright (C) 2009, 2012 Google Inc. All rights reserved.
* Copyright (C) 2013, Intel Corporation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef DocumentThreadableLoader_h
#define DocumentThreadableLoader_h
#include "core/fetch/RawResource.h"
#include "core/fetch/ResourceOwner.h"
#include "core/loader/ThreadableLoader.h"
#include "platform/Timer.h"
#include "platform/network/HTTPHeaderMap.h"
#include "platform/network/ResourceError.h"
#include "wtf/Forward.h"
#include "wtf/OwnPtr.h"
#include "wtf/PassRefPtr.h"
#include "wtf/text/WTFString.h"
namespace blink {
class Document;
class KURL;
class ResourceRequest;
class SecurityOrigin;
class ThreadableLoaderClient;
class DocumentThreadableLoader final : public ThreadableLoader, private ResourceOwner<RawResource> {
WTF_MAKE_FAST_ALLOCATED;
public:
static void loadResourceSynchronously(Document&, const ResourceRequest&, ThreadableLoaderClient&, const ThreadableLoaderOptions&, const ResourceLoaderOptions&);
static PassRefPtr<DocumentThreadableLoader> create(Document&, ThreadableLoaderClient*, const ResourceRequest&, const ThreadableLoaderOptions&, const ResourceLoaderOptions&);
virtual ~DocumentThreadableLoader();
virtual void overrideTimeout(unsigned long timeout) override;
virtual void cancel() override;
void setDefersLoading(bool);
private:
enum BlockingBehavior {
LoadSynchronously,
LoadAsynchronously
};
DocumentThreadableLoader(Document&, ThreadableLoaderClient*, BlockingBehavior, const ResourceRequest&, const ThreadableLoaderOptions&, const ResourceLoaderOptions&);
// ResourceClient
void notifyFinished(Resource*) override;
// RawResourceClient
void dataSent(Resource*, unsigned long long bytesSent, unsigned long long totalBytesToBeSent) override;
void responseReceived(Resource*, const ResourceResponse&, PassOwnPtr<WebDataConsumerHandle>) override;
void dataReceived(Resource*, const char* data, unsigned dataLength) override;
void redirectReceived(Resource*, ResourceRequest&, const ResourceResponse&) override;
void dataDownloaded(Resource*, int) override;
void cancelWithError(const ResourceError&);
// Notify Inspector and log to console about resource response. Use
// this method if response is not going to be finished normally.
void reportResponseReceived(unsigned long identifier, const ResourceResponse&);
// Methods containing code to handle resource fetch results which is
// common to both sync and async mode.
void handleResponse(unsigned long identifier, const ResourceResponse&, PassOwnPtr<WebDataConsumerHandle>);
void handleReceivedData(const char* data, unsigned dataLength);
void handleSuccessfulFinish(unsigned long identifier, double finishTime);
void didTimeout(Timer<DocumentThreadableLoader>*);
// Calls the appropriate loading method according to policy and data
// about origin. Only for handling the initial load (including fallback
// after consulting ServiceWorker).
void dispatchInitialRequest(const ResourceRequest&);
void makeCrossOriginAccessRequest(const ResourceRequest&);
// Loads m_fallbackRequestForServiceWorker.
void loadFallbackRequestForServiceWorker();
// Loads m_actualRequest.
void loadActualRequest();
// Clears m_actualRequest and reports access control check failure to
// m_client.
void handlePreflightFailure(const String& url, const String& errorDescription);
// Investigates the response for the preflight request. If successful,
// the actual request will be made later in handleSuccessfulFinish().
void handlePreflightResponse(const ResourceResponse&);
void loadRequest(const ResourceRequest&, ResourceLoaderOptions);
bool isAllowedRedirect(const KURL&) const;
bool isAllowedByContentSecurityPolicy(const KURL&) const;
// Returns DoNotAllowStoredCredentials
// if m_forceDoNotAllowStoredCredentials is set. Otherwise, just
// returns allowCredentials value of m_resourceLoaderOptions.
StoredCredentials effectiveAllowCredentials() const;
SecurityOrigin* securityOrigin() const;
ThreadableLoaderClient* m_client;
Document& m_document;
const ThreadableLoaderOptions m_options;
// Some items may be overridden by m_forceDoNotAllowStoredCredentials
// and m_securityOrigin. In such a case, build a ResourceLoaderOptions
// with up-to-date values from them and this variable, and use it.
const ResourceLoaderOptions m_resourceLoaderOptions;
bool m_forceDoNotAllowStoredCredentials;
RefPtr<SecurityOrigin> m_securityOrigin;
bool m_sameOriginRequest;
bool m_simpleRequest;
const bool m_async;
// Holds the original request for fallback in case the Service Worker
// does not respond.
OwnPtr<ResourceRequest> m_fallbackRequestForServiceWorker;
// Holds the original request and options for it during preflight
// request handling phase.
OwnPtr<ResourceRequest> m_actualRequest;
OwnPtr<ResourceLoaderOptions> m_actualOptions;
HTTPHeaderMap m_simpleRequestHeaders; // stores simple request headers in case of a cross-origin redirect.
Timer<DocumentThreadableLoader> m_timeoutTimer;
double m_requestStartedSeconds; // Time an asynchronous fetch request is started
};
} // namespace blink
#endif // DocumentThreadableLoader_h
|
