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lwip_snmpv3_priv.h
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1 /**
2  * @file
3  * Additional SNMPv3 functionality RFC3414 and RFC3826 (internal API, do not use in client code).
4  */
5 
6 /*
7  * Copyright (c) 2016 Elias Oenal.
8  * All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without modification,
11  * are permitted provided that the following conditions are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright notice,
14  * this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright notice,
16  * this list of conditions and the following disclaimer in the documentation
17  * and/or other materials provided with the distribution.
18  * 3. The name of the author may not be used to endorse or promote products
19  * derived from this software without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
22  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
23  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
24  * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
26  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
29  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
30  * OF SUCH DAMAGE.
31  *
32  * Author: Elias Oenal <lwip@eliasoenal.com>
33  */
34 
35 #ifndef LWIP_HDR_APPS_SNMP_V3_PRIV_H
36 #define LWIP_HDR_APPS_SNMP_V3_PRIV_H
37 
38 #include "lwip/apps/snmp_opts.h"
39 
40 #if LWIP_SNMP && LWIP_SNMP_V3
41 
42 #include "lwip/apps/snmpv3.h"
43 #include "snmp_pbuf_stream.h"
44 
45 /* According to RFC 3411 */
46 #define SNMP_V3_MAX_ENGINE_ID_LENGTH 32
47 #define SNMP_V3_MAX_USER_LENGTH 32
48 
49 #define SNMP_V3_MAX_AUTH_PARAM_LENGTH 12
50 #define SNMP_V3_MAX_PRIV_PARAM_LENGTH 8
51 
52 #define SNMP_V3_MD5_LEN 16
53 #define SNMP_V3_SHA_LEN 20
54 
55 typedef enum {
56  SNMP_V3_PRIV_MODE_DECRYPT = 0,
57  SNMP_V3_PRIV_MODE_ENCRYPT = 1
58 } snmpv3_priv_mode_t;
59 
60 s32_t snmpv3_get_engine_boots_internal(void);
61 err_t snmpv3_auth(struct snmp_pbuf_stream *stream, u16_t length, const u8_t *key, snmpv3_auth_algo_t algo, u8_t *hmac_out);
62 err_t snmpv3_crypt(struct snmp_pbuf_stream *stream, u16_t length, const u8_t *key,
63  const u8_t *priv_param, const u32_t engine_boots, const u32_t engine_time, snmpv3_priv_algo_t algo, snmpv3_priv_mode_t mode);
64 err_t snmpv3_build_priv_param(u8_t *priv_param);
65 void snmpv3_enginetime_timer(void *arg);
66 
67 #endif
68 
69 #endif /* LWIP_HDR_APPS_SNMP_V3_PRIV_H */
snmpv3.h
Additional SNMPv3 functionality RFC3414 and RFC3826.
snmp_opts.h
SNMP server options list.
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