1 /*
2 * Copyright (c) 2023 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 "local_code_sign_stub.h"
17
18 #include "cert_utils.h"
19 #include "cs_hisysevent.h"
20 #include "cs_hitrace.h"
21 #include "errcode.h"
22 #include "ipc_skeleton.h"
23 #include "log.h"
24 #include "message_parcel.h"
25 #include "permission_utils.h"
26
27 namespace OHOS {
28 namespace Security {
29 namespace CodeSign {
30 using namespace std;
31
LocalCodeSignStub()32 LocalCodeSignStub::LocalCodeSignStub()
33 {
34 }
35
~LocalCodeSignStub()36 LocalCodeSignStub::~LocalCodeSignStub()
37 {
38 }
39
OnRemoteRequest(uint32_t code,MessageParcel & data,MessageParcel & reply,MessageOption & option)40 int32_t LocalCodeSignStub::OnRemoteRequest(uint32_t code,
41 MessageParcel &data, MessageParcel &reply, MessageOption &option)
42 {
43 DelayUnloadTask();
44 std::u16string descriptor = LocalCodeSignStub::GetDescriptor();
45 std::u16string token = data.ReadInterfaceToken();
46 if (token != descriptor) {
47 return CS_ERR_IPC_MSG_INVALID;
48 }
49 switch (code) {
50 case static_cast<uint32_t>(LocalCodeSignInterfaceCode::INIT_LOCAL_CERTIFICATE):
51 return InitLocalCertificateInner(data, reply);
52 case static_cast<uint32_t>(LocalCodeSignInterfaceCode::SIGN_LOCAL_CODE):
53 return SignLocalCodeInner(data, reply);
54 default:
55 return IPCObjectStub::OnRemoteRequest(code, data, reply, option);
56 }
57 }
58
InitLocalCertificateInner(MessageParcel & data,MessageParcel & reply)59 int32_t LocalCodeSignStub::InitLocalCertificateInner(MessageParcel &data, MessageParcel &reply)
60 {
61 if (!PermissionUtils::IsValidCallerOfCert()) {
62 reply.WriteInt32(CS_ERR_NO_PERMISSION);
63 return CS_ERR_NO_PERMISSION;
64 }
65
66 uint32_t challengeLen;
67 if (!data.ReadUint32(challengeLen) || !CheckChallengeSize(challengeLen)) {
68 LOG_ERROR("Get challenge size failed.");
69 return CS_ERR_IPC_READ_DATA;
70 }
71 ByteBuffer challenge;
72 const uint8_t *challengeBuffer = data.ReadBuffer(challengeLen);
73 if (!challenge.CopyFrom(challengeBuffer, challengeLen)) {
74 return CS_ERR_MEMORY;
75 }
76
77 ByteBuffer cert;
78 int32_t result = InitLocalCertificate(challenge, cert);
79 if (!reply.WriteInt32(result)) {
80 return CS_ERR_IPC_WRITE_DATA;
81 }
82 if (result != CS_SUCCESS) {
83 return result;
84 }
85 if (!reply.WriteUint32(cert.GetSize())) {
86 return CS_ERR_IPC_WRITE_DATA;
87 }
88 if (!reply.WriteBuffer(cert.GetBuffer(), cert.GetSize())) {
89 return CS_ERR_IPC_WRITE_DATA;
90 }
91 return CS_SUCCESS;
92 }
93
SignLocalCodeInner(MessageParcel & data,MessageParcel & reply)94 int32_t LocalCodeSignStub::SignLocalCodeInner(MessageParcel &data, MessageParcel &reply)
95 {
96 if (!PermissionUtils::IsValidCallerOfLocalCodeSign()) {
97 (void)reply.WriteInt32(CS_ERR_NO_PERMISSION);
98 return CS_ERR_NO_PERMISSION;
99 }
100 std::string filePath = data.ReadString();
101 std::string ownerID;
102 if (data.GetReadableBytes() > 0) {
103 ownerID = data.ReadString();
104 }
105 StartTrace(HITRACE_TAG_ACCESS_CONTROL, CODE_SIGN_ENABLE_START);
106 ByteBuffer signature;
107 int32_t result = SignLocalCode(ownerID, filePath, signature);
108 FinishTrace(HITRACE_TAG_ACCESS_CONTROL);
109 if (!reply.WriteInt32(result)) {
110 return CS_ERR_IPC_WRITE_DATA;
111 }
112 if (result != CS_SUCCESS) {
113 return result;
114 }
115 if (!reply.WriteUint32(signature.GetSize())) {
116 return CS_ERR_IPC_WRITE_DATA;
117 }
118 if (!reply.WriteBuffer(signature.GetBuffer(), signature.GetSize())) {
119 return CS_ERR_IPC_WRITE_DATA;
120 }
121 return CS_SUCCESS;
122 }
123 }
124 }
125 }