1/*
2 * Copyright (C) 2006-2018 Apple Inc. All rights reserved.
3 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of Apple Inc. ("Apple") nor the names of
15 * its contributors may be used to endorse or promote products derived
16 * from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#pragma once
31
32#include "FrameLoaderTypes.h"
33#include "ResourceRequest.h"
34#include <wtf/WeakPtr.h>
35#include <wtf/text/WTFString.h>
36
37#if ENABLE(CONTENT_FILTERING)
38#include "ContentFilterUnblockHandler.h"
39#endif
40
41namespace WTF {
42template<typename> class CompletionHandler;
43class CompletionHandlerCallingScope;
44}
45
46namespace WebCore {
47
48class DocumentLoader;
49class FormState;
50class Frame;
51class NavigationAction;
52class ResourceError;
53class ResourceResponse;
54
55enum class ShouldContinue {
56 Yes,
57 No
58};
59
60enum class NavigationPolicyDecision : uint8_t {
61 ContinueLoad,
62 IgnoreLoad,
63 StopAllLoads,
64};
65
66enum class PolicyDecisionMode { Synchronous, Asynchronous };
67
68using NewWindowPolicyDecisionFunction = CompletionHandler<void(const ResourceRequest&, WeakPtr<FormState>&&, const String& frameName, const NavigationAction&, ShouldContinue)>;
69using NavigationPolicyDecisionFunction = CompletionHandler<void(ResourceRequest&&, WeakPtr<FormState>&&, NavigationPolicyDecision)>;
70
71class PolicyChecker {
72 WTF_MAKE_NONCOPYABLE(PolicyChecker);
73 WTF_MAKE_FAST_ALLOCATED;
74public:
75 explicit PolicyChecker(Frame&);
76
77 void checkNavigationPolicy(ResourceRequest&&, const ResourceResponse& redirectResponse, DocumentLoader*, RefPtr<FormState>&&, NavigationPolicyDecisionFunction&&, PolicyDecisionMode = PolicyDecisionMode::Asynchronous);
78 void checkNavigationPolicy(ResourceRequest&&, const ResourceResponse& redirectResponse, NavigationPolicyDecisionFunction&&);
79 void checkNewWindowPolicy(NavigationAction&&, ResourceRequest&&, RefPtr<FormState>&&, const String& frameName, NewWindowPolicyDecisionFunction&&);
80
81 void stopCheck();
82
83 void cannotShowMIMEType(const ResourceResponse&);
84
85 FrameLoadType loadType() const { return m_loadType; }
86 void setLoadType(FrameLoadType loadType) { m_loadType = loadType; }
87
88 bool delegateIsDecidingNavigationPolicy() const { return m_delegateIsDecidingNavigationPolicy; }
89 bool delegateIsHandlingUnimplementablePolicy() const { return m_delegateIsHandlingUnimplementablePolicy; }
90
91#if ENABLE(CONTENT_FILTERING)
92 void setContentFilterUnblockHandler(ContentFilterUnblockHandler unblockHandler) { m_contentFilterUnblockHandler = WTFMove(unblockHandler); }
93#endif
94
95private:
96 void handleUnimplementablePolicy(const ResourceError&);
97 WTF::CompletionHandlerCallingScope extendBlobURLLifetimeIfNecessary(ResourceRequest&) const;
98
99 Frame& m_frame;
100
101 bool m_delegateIsDecidingNavigationPolicy;
102 bool m_delegateIsHandlingUnimplementablePolicy;
103
104 // This identifies the type of navigation action which prompted this load. Note
105 // that WebKit conveys this value as the WebActionNavigationTypeKey value
106 // on navigation action delegate callbacks.
107 FrameLoadType m_loadType;
108
109#if ENABLE(CONTENT_FILTERING)
110 ContentFilterUnblockHandler m_contentFilterUnblockHandler;
111#endif
112};
113
114} // namespace WebCore
115