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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
/*
* Copyright (C) 2005, 2006, 2011 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of Apple Computer, Inc. ("Apple") 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 APPLE AND ITS 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 APPLE OR ITS 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 THIRD_PARTY_BLINK_RENDERER_PLATFORM_LOADER_FETCH_RESOURCE_LOADER_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_LOADER_FETCH_RESOURCE_LOADER_H_
#include <memory>
#include "base/gtest_prod_util.h"
#include "base/single_thread_task_runner.h"
#include "mojo/public/cpp/bindings/associated_binding.h"
#include "third_party/blink/public/mojom/blob/blob_registry.mojom-blink.h"
#include "third_party/blink/public/platform/web_url_loader.h"
#include "third_party/blink/public/platform/web_url_loader_client.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/loader/fetch/resource.h"
#include "third_party/blink/renderer/platform/loader/fetch/resource_load_scheduler.h"
#include "third_party/blink/renderer/platform/loader/fetch/resource_loader_options.h"
#include "third_party/blink/renderer/platform/loader/fetch/resource_request.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"
namespace blink {
class FetchContext;
class ResourceError;
class ResourceFetcher;
// A ResourceLoader is created for each Resource by the ResourceFetcher when it
// needs to load the specified resource. A ResourceLoader creates a
// WebURLLoader and loads the resource using it. Any per-load logic should be
// implemented in this class basically.
class PLATFORM_EXPORT ResourceLoader final
: public GarbageCollectedFinalized<ResourceLoader>,
public ResourceLoadSchedulerClient,
protected WebURLLoaderClient,
protected mojom::blink::ProgressClient {
USING_GARBAGE_COLLECTED_MIXIN(ResourceLoader);
USING_PRE_FINALIZER(ResourceLoader, Dispose);
public:
static ResourceLoader* Create(ResourceFetcher*,
ResourceLoadScheduler*,
Resource*,
uint32_t inflight_keepalive_bytes = 0);
~ResourceLoader() override;
void Trace(blink::Visitor*) override;
void Start();
void ScheduleCancel();
void Cancel();
void SetDefersLoading(bool);
void DidChangePriority(ResourceLoadPriority, int intra_priority_value);
// Called before start() to activate cache-aware loading if enabled in
// |m_resource->options()| and applicable.
void ActivateCacheAwareLoadingIfNeeded(const ResourceRequest&);
bool IsCacheAwareLoadingActivated() const {
return is_cache_aware_loading_activated_;
}
ResourceFetcher* Fetcher() { return fetcher_; }
bool ShouldBeKeptAliveWhenDetached() const;
// WebURLLoaderClient
//
// A succesful load will consist of:
// 0+ WillFollowRedirect()
// 0+ DidSendData()
// 1 DidReceiveResponse()
// 0-1 DidReceiveCachedMetadata()
// 0+ DidReceiveData() or DidDownloadData(), but never both
// 1 DidFinishLoading()
// A failed load is indicated by 1 DidFail(), which can occur at any time
// before DidFinishLoading(), including synchronous inside one of the other
// callbacks via ResourceLoader::cancel()
bool WillFollowRedirect(const WebURL& new_url,
const WebURL& new_site_for_cookies,
const WebString& new_referrer,
WebReferrerPolicy new_referrer_policy,
const WebString& new_method,
const WebURLResponse& passed_redirect_response,
bool& report_raw_headers) override;
void DidSendData(unsigned long long bytes_sent,
unsigned long long total_bytes_to_be_sent) override;
void DidReceiveResponse(const WebURLResponse&) override;
void DidReceiveResponse(const WebURLResponse&,
std::unique_ptr<WebDataConsumerHandle>) override;
void DidReceiveCachedMetadata(const char* data, int length) override;
void DidReceiveData(const char*, int) override;
void DidReceiveTransferSizeUpdate(int transfer_size_diff) override;
void DidStartLoadingResponseBody(
mojo::ScopedDataPipeConsumerHandle body) override;
void DidDownloadData(int, int) override;
void DidFinishLoading(TimeTicks finish_time,
int64_t encoded_data_length,
int64_t encoded_body_length,
int64_t decoded_body_length,
bool blocked_cross_site_document) override;
void DidFail(const WebURLError&,
int64_t encoded_data_length,
int64_t encoded_body_length,
int64_t decoded_body_length) override;
void HandleError(const ResourceError&);
void DidFinishLoadingFirstPartInMultipart();
// ResourceLoadSchedulerClient.
void Run() override;
scoped_refptr<base::SingleThreadTaskRunner> GetLoadingTaskRunner();
private:
FRIEND_TEST_ALL_PREFIXES(ResourceLoaderTest, DetermineCORSStatus);
friend class SubresourceIntegrityTest;
// Assumes ResourceFetcher and Resource are non-null.
ResourceLoader(ResourceFetcher*,
ResourceLoadScheduler*,
Resource*,
uint32_t inflight_keepalive_bytes);
void StartWith(const ResourceRequest&);
void Release(ResourceLoadScheduler::ReleaseOption,
const ResourceLoadScheduler::TrafficReportHints&);
// This method is currently only used for service worker fallback request and
// cache-aware loading, other users should be careful not to break
// ResourceLoader state.
void Restart(const ResourceRequest&);
FetchContext& Context() const;
scoped_refptr<const SecurityOrigin> GetSourceOrigin() const;
CORSStatus DetermineCORSStatus(const ResourceResponse&, StringBuilder&) const;
void CancelForRedirectAccessCheckError(const KURL&,
ResourceRequestBlockedReason);
void RequestSynchronously(const ResourceRequest&);
void Dispose();
void CancelTimerFired(TimerBase*);
void OnProgress(uint64_t delta) override;
void FinishedCreatingBlob(const scoped_refptr<BlobDataHandle>&);
std::unique_ptr<WebURLLoader> loader_;
ResourceLoadScheduler::ClientId scheduler_client_id_;
Member<ResourceFetcher> fetcher_;
Member<ResourceLoadScheduler> scheduler_;
Member<Resource> resource_;
uint32_t inflight_keepalive_bytes_;
bool is_cache_aware_loading_activated_;
bool is_downloading_to_blob_ = false;
mojo::AssociatedBinding<mojom::blink::ProgressClient> progress_binding_;
bool blob_finished_ = false;
bool blob_response_started_ = false;
// If DidFinishLoading is called while downloading to a blob before the blob
// is finished, we might have to defer actually handling the event. This
// struct is used to store the information needed to refire DidFinishLoading
// when the blob is finished too.
struct DeferedFinishLoadingInfo {
TimeTicks finish_time;
bool blocked_cross_site_document;
};
base::Optional<DeferedFinishLoadingInfo> load_did_finish_before_blob_;
TaskRunnerTimer<ResourceLoader> cancel_timer_;
};
} // namespace blink
#endif
|
