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 #ifndef BASE_PROTOCOL_H
17 #define BASE_PROTOCOL_H
18 
19 #include "json_utils.h"
20 #include "string_util.h"
21 
22 #define PROTECTED_MSG_MAX_LEN 1024
23 
24 typedef struct {
25     Uint8Buff selfMsg;
26     Uint8Buff peerMsg;
27 } ProtectedMsg;
28 
29 typedef struct BaseProtocol BaseProtocol;
30 struct BaseProtocol {
31     int32_t name;
32     int32_t curState;
33     int32_t beginState;
34     int32_t finishState;
35     int32_t failState;
36     Uint8Buff sessionKey;
37     ProtectedMsg protectedMsg;
38     int32_t (*start)(BaseProtocol *, CJson **);
39     int32_t (*process)(BaseProtocol *, const CJson *, CJson **);
40     int32_t (*setPsk)(BaseProtocol *, const Uint8Buff *);
41     int32_t (*setSelfProtectedMsg)(BaseProtocol *, const Uint8Buff *);
42     int32_t (*setPeerProtectedMsg)(BaseProtocol *, const Uint8Buff *);
43     int32_t (*getSessionKey)(BaseProtocol *, Uint8Buff *);
44     void (*destroy)(BaseProtocol *);
45 };
46 
47 typedef enum {
48     START_AUTH_EVENT = 0,
49     CLEINT_START_REQ_EVENT,
50     SERVER_START_RSP_EVENT,
51     CLEINT_FINISH_REQ_EVENT,
52     SERVER_FINISH_RSP_EVENT,
53     FAIL_EVENT,
54     UNKNOWN_EVENT,
55 } ProtocolEventEnum;
56 
57 typedef enum {
58     CREATE_AS_CLIENT_STATE = 0,
59     CREATE_AS_SERVER_STATE,
60     CLIENT_REQ_STATE,
61     SERVER_RSP_STATE,
62     CLIENT_FINISH_REQ_STATE,
63     /* FINISH STATE */
64     SERVER_FINISH_STATE,
65     CLIENT_FINISH_STATE,
66     /* FAIL STATE */
67     FAIL_STATE
68 } ProtocolStateEnum;
69 
70 #endif
71