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1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef COMPONENTS_SUBRESOURCE_FILTER_CONTENT_COMMON_DOCUMENT_SUBRESOURCE_FILTER
_H_ | |
6 #define COMPONENTS_SUBRESOURCE_FILTER_CONTENT_COMMON_DOCUMENT_SUBRESOURCE_FILTER
_H_ | |
7 | |
8 #include <stddef.h> | |
9 | |
10 #include <memory> | |
11 #include <vector> | |
12 | |
13 #include "base/callback.h" | |
14 #include "base/macros.h" | |
15 #include "base/memory/ref_counted.h" | |
16 #include "base/memory/weak_ptr.h" | |
17 #include "base/time/time.h" | |
18 #include "components/subresource_filter/content/common/document_load_statistics.
h" | |
19 #include "components/subresource_filter/core/common/activation_level.h" | |
20 #include "components/subresource_filter/core/common/activation_state.h" | |
21 #include "components/subresource_filter/core/common/indexed_ruleset.h" | |
22 #include "components/subresource_filter/core/common/proto/rules.pb.h" | |
23 #include "third_party/WebKit/public/platform/WebDocumentSubresourceFilter.h" | |
24 #include "url/gurl.h" | |
25 #include "url/origin.h" | |
26 | |
27 namespace subresource_filter { | |
28 | |
29 class FirstPartyOrigin; | |
30 class MemoryMappedRuleset; | |
31 | |
32 // Computes whether/how subresource filtering should be activated while loading | |
33 // |document_url| in a frame, based on the parent document's |activation_state|, | |
34 // the |parent_document_origin|, as well as any applicable deactivation rules in | |
35 // non-null |ruleset|. | |
36 ActivationState ComputeActivationState( | |
37 const GURL& document_url, | |
38 const url::Origin& parent_document_origin, | |
39 const ActivationState& parent_activation_state, | |
40 const MemoryMappedRuleset* ruleset); | |
41 | |
42 // Same as above, but instead of relying on the pre-computed activation state of | |
43 // the parent, computes the activation state for a frame from scratch, based on | |
44 // the page-level activation options |activation_level| and | |
45 // |measure_performance|; as well as any deactivation rules in |ruleset| that | |
46 // apply to |ancestor_document_urls|. | |
47 // | |
48 // TODO(pkalinnikov): Remove this when browser-side navigation is supported. | |
49 ActivationState ComputeActivationState( | |
50 ActivationLevel activation_level, | |
51 bool measure_performance, | |
52 const std::vector<GURL>& ancestor_document_urls, | |
53 const MemoryMappedRuleset* ruleset); | |
54 | |
55 // Performs filtering of subresource loads in the scope of a given document. | |
56 class DocumentSubresourceFilter | |
57 : public blink::WebDocumentSubresourceFilter, | |
58 public base::SupportsWeakPtr<DocumentSubresourceFilter> { | |
59 public: | |
60 // Constructs a new filter that will: | |
61 // -- Operate in a manner prescribed in |activation_state|. | |
62 // -- Filter subresource loads in the scope of a document loaded from | |
63 // |document_origin|. | |
64 // -- Hold a reference to and use |ruleset| for its entire lifetime. | |
65 // -- Invoke |first_disallowed_load_callback|, if it is non-null, on the | |
66 // first disallowed subresource load. | |
67 DocumentSubresourceFilter(url::Origin document_origin, | |
68 ActivationState activation_state, | |
69 scoped_refptr<const MemoryMappedRuleset> ruleset, | |
70 base::OnceClosure first_disallowed_load_callback); | |
71 | |
72 ~DocumentSubresourceFilter() override; | |
73 | |
74 const DocumentLoadStatistics& statistics() const { return statistics_; } | |
75 bool is_performance_measuring_enabled() const { | |
76 return activation_state_.measure_performance; | |
77 } | |
78 | |
79 // blink::WebDocumentSubresourceFilter: | |
80 LoadPolicy getLoadPolicy(const blink::WebURL& resourceUrl, | |
81 blink::WebURLRequest::RequestContext) override; | |
82 void reportDisallowedLoad() override; | |
83 | |
84 LoadPolicy GetLoadPolicyForSubdocument(const GURL& subdocument_url); | |
85 | |
86 private: | |
87 LoadPolicy EvaluateLoadPolicy(const GURL& resource_url, | |
88 proto::ElementType element_type); | |
89 | |
90 const ActivationState activation_state_; | |
91 const scoped_refptr<const MemoryMappedRuleset> ruleset_; | |
92 const IndexedRulesetMatcher ruleset_matcher_; | |
93 | |
94 // Equals nullptr iff |activation_state_.filtering_disabled_for_document|. | |
95 std::unique_ptr<FirstPartyOrigin> document_origin_; | |
96 | |
97 base::OnceClosure first_disallowed_load_callback_; | |
98 DocumentLoadStatistics statistics_; | |
99 | |
100 DISALLOW_COPY_AND_ASSIGN(DocumentSubresourceFilter); | |
101 }; | |
102 | |
103 } // namespace subresource_filter | |
104 | |
105 #endif // COMPONENTS_SUBRESOURCE_FILTER_CONTENT_COMMON_DOCUMENT_SUBRESOURCE_FIL
TER_H_ | |
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