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1 // Copyright 2017 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 #include "components/payments/content/android/utility/payment_manifest_parser.h" | |
6 | |
7 #include <stddef.h> | |
8 | |
9 #include <memory> | |
10 #include <utility> | |
11 | |
12 #include "base/json/json_reader.h" | |
13 #include "base/memory/ptr_util.h" | |
14 #include "base/strings/string_util.h" | |
15 #include "base/values.h" | |
16 #include "components/payments/content/android/utility/fingerprint_parser.h" | |
17 #include "mojo/public/cpp/bindings/strong_binding.h" | |
18 | |
19 namespace payments { | |
20 | |
21 // static | |
22 void PaymentManifestParser::Create( | |
23 mojom::PaymentManifestParserRequest request) { | |
24 mojo::MakeStrongBinding(base::MakeUnique<PaymentManifestParser>(), | |
25 std::move(request)); | |
26 } | |
27 | |
28 // static | |
29 std::vector<mojom::PaymentManifestSectionPtr> | |
30 PaymentManifestParser::ParseIntoVector(const std::string& input) { | |
31 std::vector<mojom::PaymentManifestSectionPtr> output; | |
32 std::unique_ptr<base::Value> value(base::JSONReader::Read(input)); | |
33 if (!value) | |
34 return output; | |
35 | |
36 std::unique_ptr<base::DictionaryValue> dict = | |
37 base::DictionaryValue::From(std::move(value)); | |
38 if (!dict) | |
39 return output; | |
40 | |
41 base::ListValue* list = nullptr; | |
42 if (!dict->GetList("android", &list) || !list) | |
43 return output; | |
44 | |
45 size_t sections_size = list->GetSize(); | |
46 const size_t kMaximumNumberOfSections = 100U; | |
47 if (sections_size > kMaximumNumberOfSections) | |
48 return output; | |
49 | |
50 const char* const kVersion = "version"; | |
51 const char* const kFingerprints = "sha256_cert_fingerprints"; | |
52 for (size_t i = 0; i < sections_size; ++i) { | |
53 base::DictionaryValue* item = nullptr; | |
54 if (!list->GetDictionary(i, &item) || !item) { | |
55 output.clear(); | |
56 return output; | |
57 } | |
58 | |
59 mojom::PaymentManifestSectionPtr section = | |
60 mojom::PaymentManifestSection::New(); | |
61 section->version = 0; | |
62 | |
63 if (!item->GetString("package", §ion->package_name) || | |
64 section->package_name.empty() || | |
65 !base::IsStringASCII(section->package_name)) { | |
66 output.clear(); | |
67 return output; | |
68 } | |
69 | |
70 if (section->package_name == "*") { | |
71 output.clear(); | |
72 // If there's a section with "package": "*", then it must be the only | |
73 // section and it should not have "version" or "sha256_cert_fingerprints". | |
74 // (Any deviations from a correct format cause the full file to be | |
75 // rejected.) | |
76 if (!item->HasKey(kVersion) && !item->HasKey(kFingerprints) && | |
77 sections_size == 1U) { | |
78 output.push_back(std::move(section)); | |
79 } | |
80 return output; | |
81 } | |
82 | |
83 if (!item->HasKey(kVersion) || !item->HasKey(kFingerprints)) { | |
84 output.clear(); | |
85 return output; | |
86 } | |
87 | |
88 int version = 0; | |
89 if (!item->GetInteger(kVersion, &version)) { | |
90 output.clear(); | |
91 return output; | |
92 } | |
93 | |
94 section->version = static_cast<int64_t>(version); | |
95 | |
96 base::ListValue* fingerprints = nullptr; | |
97 if (!item->GetList(kFingerprints, &fingerprints) || !fingerprints || | |
98 fingerprints->empty()) { | |
99 output.clear(); | |
100 return output; | |
101 } | |
102 | |
103 size_t fingerprints_size = fingerprints->GetSize(); | |
104 const size_t kMaximumNumberOfFingerprints = 100U; | |
105 if (fingerprints_size > kMaximumNumberOfFingerprints) { | |
106 output.clear(); | |
107 return output; | |
108 } | |
109 | |
110 for (size_t j = 0; j < fingerprints_size; ++j) { | |
111 std::string fingerprint; | |
112 if (!fingerprints->GetString(j, &fingerprint) || fingerprint.empty()) { | |
113 output.clear(); | |
114 return output; | |
115 } | |
116 | |
117 std::vector<uint8_t> fingerprint_bytes = | |
118 FingerprintStringToByteArray(fingerprint); | |
119 if (32U != fingerprint_bytes.size()) { | |
120 output.clear(); | |
121 return output; | |
122 } | |
123 | |
124 section->sha256_cert_fingerprints.push_back(fingerprint_bytes); | |
125 } | |
126 | |
127 output.push_back(std::move(section)); | |
128 } | |
129 | |
130 return output; | |
131 } | |
132 | |
133 PaymentManifestParser::PaymentManifestParser() {} | |
134 | |
135 PaymentManifestParser::~PaymentManifestParser() {} | |
136 | |
137 void PaymentManifestParser::Parse(const std::string& content, | |
138 const ParseCallback& callback) { | |
139 callback.Run(ParseIntoVector(content)); | |
140 } | |
141 | |
142 } // namespace payments | |
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