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
|
/*
* Copyright (C) 2012 Google, 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.
*
* THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``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 COMPUTER, INC. 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.
*/
#include "core/fetch/FetchRequest.h"
#include "core/fetch/CrossOriginAccessControl.h"
#include "core/fetch/ResourceFetcher.h"
#include "platform/weborigin/KURL.h"
#include "platform/weborigin/SecurityOrigin.h"
#include "platform/weborigin/Suborigin.h"
namespace blink {
FetchRequest::FetchRequest(const ResourceRequest& resourceRequest,
const AtomicString& initiator,
const String& charset)
: m_resourceRequest(resourceRequest),
m_charset(charset),
m_options(ResourceFetcher::defaultResourceOptions()),
m_forPreload(false),
m_linkPreload(false),
m_preloadDiscoveryTime(0.0),
m_defer(NoDefer),
m_originRestriction(UseDefaultOriginRestrictionForType),
m_placeholderImageRequestType(DisallowPlaceholder) {
m_options.initiatorInfo.name = initiator;
}
FetchRequest::FetchRequest(const ResourceRequest& resourceRequest,
const AtomicString& initiator,
const ResourceLoaderOptions& options)
: m_resourceRequest(resourceRequest),
m_options(options),
m_forPreload(false),
m_linkPreload(false),
m_preloadDiscoveryTime(0.0),
m_defer(NoDefer),
m_originRestriction(UseDefaultOriginRestrictionForType),
m_placeholderImageRequestType(
PlaceholderImageRequestType::DisallowPlaceholder) {
m_options.initiatorInfo.name = initiator;
}
FetchRequest::FetchRequest(const ResourceRequest& resourceRequest,
const FetchInitiatorInfo& initiator)
: m_resourceRequest(resourceRequest),
m_options(ResourceFetcher::defaultResourceOptions()),
m_forPreload(false),
m_linkPreload(false),
m_preloadDiscoveryTime(0.0),
m_defer(NoDefer),
m_originRestriction(UseDefaultOriginRestrictionForType),
m_placeholderImageRequestType(
PlaceholderImageRequestType::DisallowPlaceholder) {
m_options.initiatorInfo = initiator;
}
FetchRequest::~FetchRequest() {}
void FetchRequest::setCrossOriginAccessControl(
SecurityOrigin* origin,
CrossOriginAttributeValue crossOrigin) {
DCHECK_NE(crossOrigin, CrossOriginAttributeNotSet);
// Per https://w3c.github.io/webappsec-suborigins/#security-model-opt-outs,
// credentials are forced when credentials mode is "same-origin", the
// 'unsafe-credentials' option is set, and the request's physical origin is
// the same as the URL's.
const bool suboriginPolicyForcesCredentials =
origin->hasSuborigin() &&
origin->suborigin()->policyContains(
Suborigin::SuboriginPolicyOptions::UnsafeCredentials) &&
SecurityOrigin::create(url())->isSameSchemeHostPort(origin);
const bool useCredentials =
crossOrigin == CrossOriginAttributeUseCredentials ||
suboriginPolicyForcesCredentials;
const bool isSameOriginRequest =
origin && origin->canRequestNoSuborigin(m_resourceRequest.url());
// Currently FetchRequestMode and FetchCredentialsMode are only used when the
// request goes to Service Worker.
m_resourceRequest.setFetchRequestMode(WebURLRequest::FetchRequestModeCORS);
m_resourceRequest.setFetchCredentialsMode(
useCredentials ? WebURLRequest::FetchCredentialsModeInclude
: WebURLRequest::FetchCredentialsModeSameOrigin);
if (isSameOriginRequest || useCredentials) {
m_options.allowCredentials = AllowStoredCredentials;
m_resourceRequest.setAllowStoredCredentials(true);
} else {
m_options.allowCredentials = DoNotAllowStoredCredentials;
m_resourceRequest.setAllowStoredCredentials(false);
}
m_options.corsEnabled = IsCORSEnabled;
m_options.securityOrigin = origin;
m_options.credentialsRequested = useCredentials
? ClientRequestedCredentials
: ClientDidNotRequestCredentials;
// TODO: Credentials should be removed only when the request is cross origin.
m_resourceRequest.removeCredentials();
if (origin)
m_resourceRequest.setHTTPOrigin(origin);
}
void FetchRequest::setResourceWidth(ResourceWidth resourceWidth) {
if (resourceWidth.isSet) {
m_resourceWidth.width = resourceWidth.width;
m_resourceWidth.isSet = true;
}
}
void FetchRequest::setForPreload(bool forPreload, double discoveryTime) {
m_forPreload = forPreload;
m_preloadDiscoveryTime = discoveryTime;
}
void FetchRequest::makeSynchronous() {
// Synchronous requests should always be max priority, lest they hang the
// renderer.
m_resourceRequest.setPriority(ResourceLoadPriorityHighest);
m_resourceRequest.setTimeoutInterval(10);
m_options.synchronousPolicy = RequestSynchronously;
}
void FetchRequest::setAllowImagePlaceholder() {
DCHECK_EQ(DisallowPlaceholder, m_placeholderImageRequestType);
if (!m_resourceRequest.url().protocolIsInHTTPFamily() ||
m_resourceRequest.httpMethod() != "GET" ||
!m_resourceRequest.httpHeaderField("range").isNull()) {
return;
}
m_placeholderImageRequestType = AllowPlaceholder;
// Fetch the first few bytes of the image. This number is tuned to both (a)
// likely capture the entire image for small images and (b) likely contain
// the dimensions for larger images.
// TODO(sclittle): Calculate the optimal value for this number.
m_resourceRequest.setHTTPHeaderField("range", "bytes=0-2047");
// TODO(sclittle): Indicate somehow (e.g. through a new request bit) to the
// embedder that it should return the full resource if the entire resource is
// fresh in the cache.
}
} // namespace blink
|
