1 /*
2 * Copyright (c) 2020 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 #if !(defined(_CUT_PAKE_) || defined(_CUT_PAKE_SERVER_))
17
18 #include "securec.h"
19 #include "log.h"
20 #include "mem_stat.h"
21 #include "jsonutil.h"
22 #include "commonutil.h"
23 #include "pake_server.h"
24 #include "key_agreement_version.h"
25 #include "parsedata.h"
26
parse_pake_response(const char * payload,enum json_object_data_type data_type)27 void *parse_pake_response(const char *payload, enum json_object_data_type data_type)
28 {
29 struct pake_start_response_data *pake_response =
30 (struct pake_start_response_data *)MALLOC(sizeof(struct pake_start_response_data));
31 if (pake_response == NULL) {
32 return NULL;
33 }
34 (void)memset_s(pake_response, sizeof(*pake_response), 0, sizeof(*pake_response));
35 json_pobject obj = parse_payload(payload, data_type);
36 if (obj == NULL) {
37 LOGE("Parse Pake Response parse payload failed");
38 goto error;
39 }
40 /* challenge */
41 int32_t result = byte_convert(obj, FIELD_CHALLENGE, pake_response->challenge.challenge,
42 &pake_response->challenge.length, CHALLENGE_BUFF_LENGTH);
43 if (result != HC_OK) {
44 LOGE("Parse Pake Response failed, field is null in challenge");
45 goto error;
46 }
47 /* salt */
48 result = byte_convert(obj, FIELD_SALT, pake_response->salt.salt,
49 (uint32_t *)&pake_response->salt.length, HC_SALT_BUFF_LEN);
50 if (result != HC_OK) {
51 LOGE("Parse Pake Response failed, field is null in salt");
52 goto error;
53 }
54 /* epk */
55 result = byte_convert(obj, FIELD_EPK, pake_response->epk.epk,
56 &pake_response->epk.length, PAKE_EPK_LENGTH);
57 if (result != HC_OK) {
58 LOGE("Parse Pake Response failed, field is null in epk");
59 goto error;
60 }
61 /* version */
62 json_pobject obj_ver = get_json_obj(obj, FIELD_VERSION);
63 bool ret = parse_version(obj_ver, &pake_response->self_version, &pake_response->self_support_version);
64 if (!ret) {
65 LOGE("Parse Pake Response failed, field is null in version");
66 goto error;
67 }
68 free_payload(obj, data_type);
69 return (void *)pake_response;
70 error:
71 free_payload(obj, data_type);
72 FREE(pake_response);
73 return NULL;
74 }
75
free_pake_response(void * obj)76 void free_pake_response(void *obj)
77 {
78 if (obj != NULL) {
79 FREE(obj);
80 }
81 }
82
make_pake_response(void * data)83 char *make_pake_response(void *data)
84 {
85 struct pake_start_response_data *pake_response = data;
86 /* challenge */
87 uint8_t *tmp_cha_data_hex = raw_byte_to_hex_string(pake_response->challenge.challenge,
88 pake_response->challenge.length);
89 if (tmp_cha_data_hex == NULL) {
90 return NULL;
91 }
92 /* salt */
93 uint8_t *tmp_salt_data_hex = raw_byte_to_hex_string(pake_response->salt.salt, pake_response->salt.length);
94 if (tmp_salt_data_hex == NULL) {
95 FREE(tmp_cha_data_hex);
96 return NULL;
97 }
98 /* epk */
99 uint8_t *tmp_epk_data_hex = raw_byte_to_hex_string(pake_response->epk.epk, pake_response->epk.length);
100 if (tmp_epk_data_hex == NULL) {
101 FREE(tmp_cha_data_hex);
102 FREE(tmp_salt_data_hex);
103 return NULL;
104 }
105 char *ret_str = (char *)MALLOC(RET_STR_LENGTH);
106 if (ret_str == NULL) {
107 FREE(tmp_cha_data_hex);
108 FREE(tmp_salt_data_hex);
109 FREE(tmp_epk_data_hex);
110 return NULL;
111 }
112 (void)memset_s(ret_str, RET_STR_LENGTH, 0, RET_STR_LENGTH);
113 if (snprintf_s(ret_str, RET_STR_LENGTH, RET_STR_LENGTH - 1,
114 "{\"%s\":%d,\"%s\":{\"%s\":{\"%s\":\"%u.%u.%u\",\"%s\":\"%u.%u.%u\"},"
115 "\"%s\":\"%s\",\"%s\":\"%s\",\"%s\":\"%s\"}}",
116 FIELD_MESSAGE, PAKE_RESPONSE, FIELD_PAYLOAD, FIELD_VERSION, FIELD_CURRENT_VERSION,
117 pake_response->self_version.first, pake_response->self_version.second,
118 pake_response->self_version.third, FIELD_MIN_VERSION, pake_response->self_support_version.first,
119 pake_response->self_support_version.second, pake_response->self_support_version.third,
120 FIELD_CHALLENGE, (char *)tmp_cha_data_hex, FIELD_SALT, (char *)tmp_salt_data_hex, FIELD_EPK,
121 (char *)tmp_epk_data_hex) < 0) {
122 LOGE("String generate failed");
123 FREE(ret_str);
124 ret_str = NULL;
125 }
126 FREE(tmp_cha_data_hex);
127 FREE(tmp_salt_data_hex);
128 FREE(tmp_epk_data_hex);
129 return ret_str;
130 }
131
132 #else /* _CUT_XXX_ */
133
134 #include "parsedata.h"
135 DEFINE_EMPTY_STRUCT_FUNC(pake_response)
136
137 #endif /* _CUT_XXX_ */
138