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
|
/*
* Copyright (C) 2013 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 APPLE 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 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 "config.h"
#include "HTMLResourcePreloader.h"
#include "CachedResourceLoader.h"
#include "CrossOriginAccessControl.h"
#include "DefaultResourceLoadPriority.h"
#include "DocumentInlines.h"
#include "MediaQueryEvaluator.h"
#include "MediaQueryParser.h"
#include "NodeRenderStyle.h"
#include "RenderView.h"
#include "ScriptElementCachedScriptFetcher.h"
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
WTF_MAKE_TZONE_ALLOCATED_IMPL(PreloadRequest);
WTF_MAKE_TZONE_ALLOCATED_IMPL(HTMLResourcePreloader);
URL PreloadRequest::completeURL(Document& document)
{
return document.completeURL(m_resourceURL, m_baseURL.isEmpty() ? document.baseURL() : m_baseURL);
}
CachedResourceRequest PreloadRequest::resourceRequest(Document& document)
{
ASSERT(isMainThread());
bool skipContentSecurityPolicyCheck = false;
if (m_resourceType == CachedResource::Type::Script)
skipContentSecurityPolicyCheck = document.checkedContentSecurityPolicy()->allowScriptWithNonce(m_nonceAttribute);
else if (m_resourceType == CachedResource::Type::CSSStyleSheet)
skipContentSecurityPolicyCheck = document.checkedContentSecurityPolicy()->allowStyleWithNonce(m_nonceAttribute);
ResourceLoaderOptions options = CachedResourceLoader::defaultCachedResourceOptions();
if (skipContentSecurityPolicyCheck)
options.contentSecurityPolicyImposition = ContentSecurityPolicyImposition::SkipPolicyCheck;
String crossOriginMode = m_crossOriginMode;
if (m_scriptType == ScriptType::Module) {
if (crossOriginMode.isNull())
crossOriginMode = ScriptElementCachedScriptFetcher::defaultCrossOriginModeForModule;
}
if (m_resourceType == CachedResource::Type::Script || m_resourceType == CachedResource::Type::ImageResource)
options.referrerPolicy = m_referrerPolicy;
options.fetchPriority = m_fetchPriority;
auto request = createPotentialAccessControlRequest(completeURL(document), WTFMove(options), document, crossOriginMode);
request.setInitiatorType(m_initiatorType);
if (m_scriptIsAsync && m_resourceType == CachedResource::Type::Script && m_scriptType == ScriptType::Classic)
request.setPriority(DefaultResourceLoadPriority::asyncScript);
return request;
}
void HTMLResourcePreloader::preload(PreloadRequestStream requests)
{
for (auto& request : requests)
preload(WTFMove(request));
}
void HTMLResourcePreloader::preload(std::unique_ptr<PreloadRequest> preload)
{
Ref document = protectedDocument();
ASSERT(document->frame());
ASSERT(document->renderView());
auto queries = MQ::MediaQueryParser::parse(preload->media(), { document.get() });
if (!MQ::MediaQueryEvaluator { screenAtom(), document, document->renderStyle() }.evaluate(queries))
return;
document->protectedCachedResourceLoader()->preload(preload->resourceType(), preload->resourceRequest(document));
}
}
|
