| /** |
| * @file |
| * Dummy SNMPv3 functions. |
| */ |
| |
| /* |
| * Copyright (c) 2016 Elias Oenal. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without modification, |
| * are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
| * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
| * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
| * OF SUCH DAMAGE. |
| * |
| * Author: Elias Oenal <lwip@eliasoenal.com> |
| * Dirk Ziegelmeier <dirk@ziegelmeier.net> |
| */ |
| |
| #include "lwip/apps/snmpv3.h" |
| #include "snmpv3_priv.h" |
| #include <string.h> |
| #include "lwip/err.h" |
| |
| #if LWIP_SNMP && LWIP_SNMP_V3 |
| |
| /** |
| * @param username is a pointer to a string. |
| * @param auth_algo is a pointer to u8_t. The implementation has to set this if user was found. |
| * @param auth_key is a pointer to a pointer to a string. Implementation has to set this if user was found. |
| * @param priv_algo is a pointer to u8_t. The implementation has to set this if user was found. |
| * @param priv_key is a pointer to a pointer to a string. Implementation has to set this if user was found. |
| */ |
| err_t |
| snmpv3_get_user(const char* username, u8_t *auth_algo, u8_t *auth_key, u8_t *priv_algo, u8_t *priv_key) |
| { |
| const char* engine_id; |
| u8_t engine_id_len; |
| |
| if(strlen(username) == 0) { |
| return ERR_OK; |
| } |
| |
| if(memcmp(username, "lwip", 4) != 0) { |
| return ERR_VAL; |
| } |
| |
| snmpv3_get_engine_id(&engine_id, &engine_id_len); |
| |
| if(auth_key != NULL) { |
| snmpv3_password_to_key_sha((const u8_t*)"maplesyrup", 10, |
| (const u8_t*)engine_id, engine_id_len, |
| auth_key); |
| *auth_algo = SNMP_V3_AUTH_ALGO_SHA; |
| } |
| if(priv_key != NULL) { |
| snmpv3_password_to_key_sha((const u8_t*)"maplesyrup", 10, |
| (const u8_t*)engine_id, engine_id_len, |
| priv_key); |
| *priv_algo = SNMP_V3_PRIV_ALGO_DES; |
| } |
| return ERR_OK; |
| } |
| |
| /** |
| * Get engine ID from persistence |
| * @param id |
| * @param len |
| */ |
| void |
| snmpv3_get_engine_id(const char **id, u8_t *len) |
| { |
| *id = "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02"; |
| *len = 12; |
| } |
| |
| /** |
| * Store engine ID in persistence |
| * @param id |
| * @param len |
| */ |
| err_t |
| snmpv3_set_engine_id(const char *id, u8_t len) |
| { |
| LWIP_UNUSED_ARG(id); |
| LWIP_UNUSED_ARG(len); |
| return ERR_OK; |
| } |
| |
| /** |
| * Get engine boots from persistence. Must be increased on each boot. |
| * @return |
| */ |
| u32_t |
| snmpv3_get_engine_boots(void) |
| { |
| return 0; |
| } |
| |
| /** |
| * Store engine boots in persistence |
| * @param boots |
| */ |
| void |
| snmpv3_set_engine_boots(u32_t boots) |
| { |
| LWIP_UNUSED_ARG(boots); |
| } |
| |
| /** |
| * RFC3414 2.2.2. |
| * Once the timer reaches 2147483647 it gets reset to zero and the |
| * engine boot ups get incremented. |
| */ |
| u32_t |
| snmpv3_get_engine_time(void) |
| { |
| return 0; |
| } |
| |
| /** |
| * Reset current engine time to 0 |
| */ |
| void |
| snmpv3_reset_engine_time(void) |
| { |
| } |
| |
| #endif /* LWIP_SNMP && LWIP_SNMP_V3 */ |