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