1 /*
2 * Copyright (C) 2021 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "init/trusted_root_ca.h"
17
18 #include "nlohmann/json.hpp"
19
20 #include "common/hap_verify_log.h"
21 #include "util/hap_cert_verify_openssl_utils.h"
22
23 namespace OHOS {
24 namespace Security {
25 namespace Verify {
26 const std::string TrustedRootCa::TRUSTED_ROOT_CA_FILE_PATH = "/system/etc/security/trusted_root_ca.json";
27 const std::string TrustedRootCa::TRUSTED_ROOT_CA_TEST_FILE_PATH = "/system/etc/security/trusted_root_ca_test.json";
28 const std::string OPENHARMONY_CERT = "C=CN, O=OpenHarmony, OU=OpenHarmony Team, CN=OpenHarmony Application Root CA";
29
GetInstance()30 TrustedRootCa& TrustedRootCa::GetInstance()
31 {
32 static TrustedRootCa singleTrustedRoot;
33 return singleTrustedRoot;
34 }
35
TrustedRootCa()36 TrustedRootCa::TrustedRootCa() : rootCerts(), rootCertsForTest(), isInit(false), isDebug(false),
37 devMode(DevMode::DEFAULT)
38 {
39 }
40
~TrustedRootCa()41 TrustedRootCa::~TrustedRootCa()
42 {
43 for (auto rootCert : rootCerts) {
44 X509_free(rootCert.second);
45 }
46 for (auto rootCert : rootCertsForTest) {
47 X509_free(rootCert.second);
48 }
49 }
50
EnableDebug()51 bool TrustedRootCa::EnableDebug()
52 {
53 if (isDebug) {
54 return true;
55 }
56
57 isDebug = GetTrustedRootCAFromJson(rootCertsForTest, TRUSTED_ROOT_CA_TEST_FILE_PATH);
58 if (isDebug) {
59 HAPVERIFY_LOG_INFO(LABEL, "parse root certs test success, certs num: %{public}zu", rootCertsForTest.size());
60 }
61 return isDebug;
62 }
63
DisableDebug()64 void TrustedRootCa::DisableDebug()
65 {
66 isDebug = false;
67 for (auto& rootCert : rootCertsForTest) {
68 X509_free(rootCert.second);
69 }
70 rootCertsForTest.clear();
71 }
72
SetDevMode(DevMode mode)73 void TrustedRootCa::SetDevMode(DevMode mode)
74 {
75 devMode = mode;
76 }
77
Init()78 bool TrustedRootCa::Init()
79 {
80 if (isInit) {
81 return true;
82 }
83
84 isInit = GetTrustedRootCAFromJson(rootCerts, TRUSTED_ROOT_CA_FILE_PATH);
85 if (isInit) {
86 HAPVERIFY_LOG_INFO(LABEL, "parse root certs success, certs num: %{public}zu", rootCerts.size());
87 }
88 return isInit;
89 }
90
Recovery()91 void TrustedRootCa::Recovery()
92 {
93 for (auto& rootCert : rootCerts) {
94 X509_free(rootCert.second);
95 }
96 rootCerts.clear();
97 isInit = false;
98 }
99
GetTrustedRootCAFromJson(StringCertMap & rootCertMap,const std::string & filePath)100 bool TrustedRootCa::GetTrustedRootCAFromJson(StringCertMap& rootCertMap, const std::string& filePath)
101 {
102 nlohmann::json trustedRootCAJson;
103 std::string errorInfo;
104 if (!JsonParserUtils::ReadTrustedRootCAFromJson(trustedRootCAJson, filePath, errorInfo)) {
105 HAPVERIFY_LOG_ERROR(LABEL, "get jsonObj from %{public}s failed, because %{public}s",
106 filePath.c_str(), errorInfo.c_str());
107 return false;
108 }
109
110 JsonMap trustedRootCAJsonMap;
111 JsonParserUtils::ParseJsonToMap(trustedRootCAJson, trustedRootCAJsonMap);
112 for (auto jsonPair : trustedRootCAJsonMap) {
113 HAPVERIFY_LOG_INFO(LABEL, "parse cert: %{public}s", jsonPair.second.c_str());
114 X509* cert = HapCertVerifyOpensslUtils::GetX509CertFromPemString(jsonPair.second);
115 if (cert == nullptr) {
116 HAPVERIFY_LOG_ERROR(LABEL, "GetX509CertFromPemString failed, key: %{public}s value: %{public}s",
117 jsonPair.first.c_str(), jsonPair.second.c_str());
118 return false;
119 }
120 rootCertMap[jsonPair.first] = cert;
121 }
122
123 if (rootCertMap.empty()) {
124 HAPVERIFY_LOG_ERROR(LABEL, "no root cert");
125 return false;
126 }
127 return true;
128 }
129
FindMatchedRoot(X509 * caCert)130 X509* TrustedRootCa::FindMatchedRoot(X509* caCert)
131 {
132 if (caCert == nullptr) {
133 return nullptr;
134 }
135
136 X509* root = FindMatchedRoot(rootCerts, caCert);
137 if (root != nullptr) {
138 return root;
139 }
140
141 if (isDebug) {
142 HAPVERIFY_LOG_INFO(LABEL, "try to match with test root");
143 root = FindMatchedRoot(rootCertsForTest, caCert);
144 }
145 return root;
146 }
147
FindMatchedRoot(const StringCertMap & rootCertMap,X509 * caCert)148 X509* TrustedRootCa::FindMatchedRoot(const StringCertMap& rootCertMap, X509* caCert)
149 {
150 for (auto root : rootCertMap) {
151 if (root.first == OPENHARMONY_CERT && devMode == DevMode::NON_DEV) {
152 continue;
153 }
154 if (HapCertVerifyOpensslUtils::X509NameCompare(X509_get_subject_name(root.second),
155 X509_get_issuer_name(caCert)) &&
156 HapCertVerifyOpensslUtils::CertVerify(caCert, root.second)) {
157 return X509_dup(root.second);
158 }
159 }
160 return nullptr;
161 }
162 } // namespace Verify
163 } // namespace Security
164 } // namespace OHOS
165