1 /*
2 * Copyright (C) 2021-2022 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 "auth_session_common_util.h"
17 #include "common_defs.h"
18 #include "string_util.h"
19 #include "device_auth_defines.h"
20 #include "hc_log.h"
21 #include "hc_types.h"
22 #define UID_HEX_STRING_LEN_MAX 64
23 #define UID_HEX_STRING_LEN_MIN 10
24
IsPeerUidLenValid(uint32_t peerUserIdLen)25 static bool IsPeerUidLenValid(uint32_t peerUserIdLen)
26 {
27 if ((peerUserIdLen < UID_HEX_STRING_LEN_MIN) || (peerUserIdLen > UID_HEX_STRING_LEN_MAX)) {
28 LOGE("The input userId len is invalid, input userId in hex string len = %d", peerUserIdLen);
29 return false;
30 }
31 return true;
32 }
33
AddPeerIdToReqParam(const CJson * receiveData,CJson * reqParam)34 static int32_t AddPeerIdToReqParam(const CJson *receiveData, CJson *reqParam)
35 {
36 const char *peerId = GetStringFromJson(receiveData, FIELD_PEER_AUTH_ID);
37 if (peerId == NULL) {
38 LOGE("Failed to get peerId from the data transmitted by the client!");
39 return HC_ERR_JSON_GET;
40 }
41 uint32_t peerIdLen = HcStrlen(peerId);
42 if ((peerIdLen == 0) || (peerIdLen > MAX_AUTH_ID_LEN) || ((peerIdLen % 2) != 0)) { /* 2: even numbers. */
43 LOGE("Invalid len of peerId!");
44 return HC_ERR_JSON_GET;
45 }
46 uint32_t peerIdToRequestLen = peerIdLen / BYTE_TO_HEX_OPER_LENGTH;
47 uint8_t *peerIdToRequest = (uint8_t *)HcMalloc(peerIdToRequestLen + 1, 0);
48 if (peerIdToRequest == NULL) {
49 LOGE("Malloc failed for peerIdToRequest!");
50 return HC_ERR_ALLOC_MEMORY;
51 }
52 int32_t res = HexStringToByte(peerId, peerIdToRequest, peerIdToRequestLen);
53 if (res != HC_SUCCESS) {
54 LOGE("Failed to convert peerId to byte, res: %d!", res);
55 HcFree(peerIdToRequest);
56 return res;
57 }
58 if (AddStringToJson(reqParam, FIELD_PEER_AUTH_ID, (const char *)peerIdToRequest) != HC_SUCCESS) {
59 LOGE("Failed to add reqParam: peerId for onRequest!");
60 HcFree(peerIdToRequest);
61 return HC_ERR_JSON_FAIL;
62 }
63 HcFree(peerIdToRequest);
64 return HC_SUCCESS;
65 }
66
GetServerConfirmation(const CJson * paramsFromClient,const CJson * reqParam,const DeviceAuthCallback * callback)67 char *GetServerConfirmation(const CJson *paramsFromClient, const CJson *reqParam,
68 const DeviceAuthCallback *callback)
69 {
70 int64_t requestId = 0;
71 if (GetByteFromJson(paramsFromClient, FIELD_REQUEST_ID, (uint8_t *)&requestId, sizeof(int64_t)) != HC_SUCCESS) {
72 LOGE("Failed to get request id!");
73 return NULL;
74 }
75 char *reqParamStr = PackJsonToString(reqParam);
76 if (reqParamStr == NULL) {
77 LOGE("Failed to pack reqParam!");
78 return NULL;
79 }
80 char *serverInfo = NULL;
81 do {
82 int32_t authForm = AUTH_FORM_INVALID_TYPE;
83 if (GetIntFromJson(paramsFromClient, FIELD_AUTH_FORM, &authForm) != HC_SUCCESS) {
84 LOGE("Failed to get authForm in received data!");
85 break;
86 }
87 if ((callback == NULL) || (callback->onRequest == NULL)) {
88 LOGE("Failed to get request callback!");
89 break;
90 }
91 LOGD("Begin to invoke onRequest for auth!");
92 serverInfo = callback->onRequest(requestId, authForm, reqParamStr);
93 LOGD("End to invoke onRequest for auth!");
94 if (serverInfo == NULL) {
95 LOGE("Failed to get server confirmation info!");
96 }
97 } while (0);
98 FreeJsonString(reqParamStr);
99 return serverInfo;
100 }
101
102
GetGeneralReqParams(const CJson * receiveData,CJson * reqParam)103 int32_t GetGeneralReqParams(const CJson *receiveData, CJson *reqParam)
104 {
105 const char *pkgName = GetStringFromJson(receiveData, FIELD_PKG_NAME);
106 if (pkgName == NULL) {
107 LOGE("Failed to get pkgName from the data transmitted by the client!");
108 return HC_ERR_JSON_GET;
109 }
110 if (AddStringToJson(reqParam, FIELD_SERVICE_PKG_NAME, pkgName) != HC_SUCCESS) {
111 LOGE("Failed to add reqParam: pkgName for onRequest!");
112 return HC_ERR_JSON_FAIL;
113 }
114 const char *serviceType = GetStringFromJson(receiveData, FIELD_SERVICE_TYPE);
115 if (serviceType == NULL) {
116 LOGE("Failed to get serviceType from the data transmitted by the client!");
117 return HC_ERR_JSON_GET;
118 }
119 if (AddStringToJson(reqParam, FIELD_SERVICE_TYPE, serviceType) != HC_SUCCESS) {
120 LOGE("Failed to add reqParam: serviceType for onRequest!");
121 return HC_ERR_JSON_FAIL;
122 }
123 int32_t res = AddPeerIdToReqParam(receiveData, reqParam);
124 if (res != HC_SUCCESS) {
125 LOGE("Failed to add peerId to reqParam!");
126 return res;
127 }
128 int32_t peerType = 0;
129 if (GetIntFromJson(receiveData, FIELD_PEER_USER_TYPE, &peerType) != HC_SUCCESS) {
130 LOGE("Failed to get peerType from the data transmitted by the client!");
131 return HC_ERR_JSON_GET;
132 }
133 if (AddIntToJson(reqParam, FIELD_PEER_USER_TYPE, peerType) != HC_SUCCESS) {
134 LOGE("Failed to add reqParam: peerType for onRequest!");
135 return HC_ERR_JSON_FAIL;
136 }
137 int32_t keyLen = DEFAULT_RETURN_KEY_LENGTH;
138 (void)GetIntFromJson(receiveData, FIELD_KEY_LENGTH, &keyLen);
139 if (AddIntToJson(reqParam, FIELD_KEY_LENGTH, keyLen) != HC_SUCCESS) {
140 LOGE("Failed to add reqParam: keyLen for onRequest!");
141 return HC_ERR_JSON_FAIL;
142 }
143 return HC_SUCCESS;
144 }
145
IsUserIdEqual(const char * userIdInDb,const char * peerUserIdInDb)146 bool IsUserIdEqual(const char *userIdInDb, const char *peerUserIdInDb)
147 {
148 if ((userIdInDb == NULL) || (peerUserIdInDb == NULL)) {
149 LOGE("Input is null for user id!");
150 return false;
151 }
152 char *peerUidToUpper = NULL;
153 if (ToUpperCase(peerUserIdInDb, &peerUidToUpper) != HC_SUCCESS) {
154 LOGE("Failed to convert the input userId to upper case!");
155 return false;
156 }
157 uint32_t userIdInDbLen = HcStrlen(userIdInDb);
158 uint32_t peerUserIdLen = HcStrlen(peerUserIdInDb);
159 if (!IsPeerUidLenValid(peerUserIdLen)) {
160 HcFree(peerUidToUpper);
161 peerUidToUpper = NULL;
162 return false;
163 }
164 uint32_t cmpLen = (userIdInDbLen > peerUserIdLen) ? peerUserIdLen : userIdInDbLen;
165 if (memcmp(userIdInDb, peerUidToUpper, cmpLen) == EOK) {
166 HcFree(peerUidToUpper);
167 peerUidToUpper = NULL;
168 return true;
169 }
170 HcFree(peerUidToUpper);
171 peerUidToUpper = NULL;
172 return false;
173 }
174
GetDuplicateServicePkgName(const CJson * params)175 char *GetDuplicateServicePkgName(const CJson *params)
176 {
177 const char *pkgName = GetStringFromJson(params, FIELD_SERVICE_PKG_NAME);
178 if (pkgName == NULL) {
179 LOGE("Failed to get pkgName from json!");
180 return NULL;
181 }
182 uint32_t pkgNameLen = HcStrlen(pkgName) + 1;
183 char *copyPkgName = (char *)HcMalloc(pkgNameLen, 0);
184 if (copyPkgName == NULL) {
185 LOGE("Failed to allocate copyPkgName memory!");
186 return NULL;
187 }
188 (void)memcpy_s(copyPkgName, pkgNameLen, pkgName, pkgNameLen);
189 return copyPkgName;
190 }