mirror of
https://git.savannah.nongnu.org/git/lwip.git
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Move snmpv3_dummy.* from main lwIP rep to contrib
This commit is contained in:
Dirk Ziegelmeier
parent
9719c52e62
commit
02be2f8f42
@ -148,8 +148,7 @@ SNMPFILES=$(LWIPDIR)/apps/snmp/snmp_asn1.c \
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$(LWIPDIR)/apps/snmp/snmp_table.c \
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$(LWIPDIR)/apps/snmp/snmp_table.c \
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$(LWIPDIR)/apps/snmp/snmp_threadsync.c \
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$(LWIPDIR)/apps/snmp/snmp_threadsync.c \
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$(LWIPDIR)/apps/snmp/snmp_traps.c \
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$(LWIPDIR)/apps/snmp/snmp_traps.c \
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$(LWIPDIR)/apps/snmp/snmpv3_mbedtls.c \
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$(LWIPDIR)/apps/snmp/snmpv3_mbedtls.c
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$(LWIPDIR)/apps/snmp/snmpv3_dummy.c
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# HTTPDFILES: HTTP server
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# HTTPDFILES: HTTP server
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HTTPDFILES=$(LWIPDIR)/apps/httpd/fs.c \
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HTTPDFILES=$(LWIPDIR)/apps/httpd/fs.c \
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@ -1,396 +0,0 @@
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/**
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* @file
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* Dummy SNMPv3 functions.
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*/
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/*
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* Copyright (c) 2016 Elias Oenal.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* Author: Elias Oenal <lwip@eliasoenal.com>
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* Dirk Ziegelmeier <dirk@ziegelmeier.net>
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*/
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#include "lwip/apps/snmpv3.h"
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#include "snmpv3_priv.h"
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#include "snmpv3_dummy.h"
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#include <string.h>
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#include "lwip/err.h"
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#include "lwip/def.h"
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#include "lwip/timeouts.h"
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#if LWIP_SNMP && LWIP_SNMP_V3
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struct user_table_entry {
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char username[32];
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snmpv3_auth_algo_t auth_algo;
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u8_t auth_key[20];
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snmpv3_priv_algo_t priv_algo;
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u8_t priv_key[20];
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};
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static struct user_table_entry user_table[] = {
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{ "lwip", SNMP_V3_AUTH_ALGO_INVAL, "" , SNMP_V3_PRIV_ALGO_INVAL, "" },
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{ "piwl", SNMP_V3_AUTH_ALGO_INVAL, "" , SNMP_V3_PRIV_ALGO_INVAL, "" },
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{ "test", SNMP_V3_AUTH_ALGO_INVAL, "" , SNMP_V3_PRIV_ALGO_INVAL, "" }
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};
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static char snmpv3_engineid[32];
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static u8_t snmpv3_engineid_len;
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static u32_t enginetime = 0;
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/* In this implementation engineboots is volatile. In a real world application this value should be stored in non-volatile memory.*/
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static u32_t engineboots = 0;
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/**
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* @brief Get the user table entry for the given username.
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*
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* @param[in] username pointer to the username
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*
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* @return pointer to the user table entry or NULL if not found.
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*/
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static struct user_table_entry*
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get_user(const char *username)
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{
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size_t i;
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for (i = 0; i < LWIP_ARRAYSIZE(user_table); i++) {
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if (strnlen(username, 32) != strnlen(user_table[i].username, 32)) {
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continue;
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}
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if (memcmp(username, user_table[i].username, strnlen(username, 32)) == 0) {
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return &user_table[i];
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}
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}
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return NULL;
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}
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u8_t
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snmpv3_get_amount_of_users(void)
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{
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return LWIP_ARRAYSIZE(user_table);
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}
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/**
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* @brief Get the username of a user number (index)
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* @param username is a pointer to a string.
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* @param index is the user index.
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* @return ERR_OK if user is found, ERR_VAL is user is not found.
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*/
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err_t
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snmpv3_get_username(char *username, u8_t index)
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{
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if (index < LWIP_ARRAYSIZE(user_table)) {
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MEMCPY(username, user_table[index].username, sizeof(user_table[0].username));
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return ERR_OK;
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}
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return ERR_VAL;
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}
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/**
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* Timer callback function that increments enginetime and reschedules itself.
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*
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* @param arg unused argument
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*/
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void
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snmpv3_enginetime_timer(void *arg)
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{
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LWIP_UNUSED_ARG(arg);
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enginetime++;
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/* This handles the engine time reset */
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snmpv3_get_engine_time_internal();
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/* restart timer */
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sys_timeout(1000, snmpv3_enginetime_timer, NULL);
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}
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err_t
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snmpv3_set_user_auth_algo(const char *username, snmpv3_auth_algo_t algo)
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{
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struct user_table_entry *p = get_user(username);
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if (p) {
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switch (algo) {
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case SNMP_V3_AUTH_ALGO_INVAL:
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if (p->priv_algo != SNMP_V3_PRIV_ALGO_INVAL) {
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/* Privacy MUST be disabled before configuring authentication */
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break;
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}
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#if LWIP_SNMP_V3_CRYPTO
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case SNMP_V3_AUTH_ALGO_MD5:
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case SNMP_V3_AUTH_ALGO_SHA:
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#endif
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p->auth_algo = algo;
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return ERR_OK;
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default:
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break;
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}
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}
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return ERR_VAL;
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}
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err_t
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snmpv3_set_user_priv_algo(const char *username, snmpv3_priv_algo_t algo)
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{
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struct user_table_entry *p = get_user(username);
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if (p) {
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switch (algo) {
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#if LWIP_SNMP_V3_CRYPTO
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case SNMP_V3_PRIV_ALGO_AES:
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case SNMP_V3_PRIV_ALGO_DES:
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if (p->auth_algo == SNMP_V3_AUTH_ALGO_INVAL) {
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/* Authentication MUST be enabled before configuring privacy */
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break;
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}
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#endif
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case SNMP_V3_PRIV_ALGO_INVAL:
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p->priv_algo = algo;
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return ERR_OK;
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default:
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break;
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}
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}
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return ERR_VAL;
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}
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err_t
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snmpv3_set_user_auth_key(const char *username, const char *password)
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{
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struct user_table_entry *p = get_user(username);
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const char *engineid;
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u8_t engineid_len;
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if (p) {
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/* password should be at least 8 characters long */
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if (strlen(password) >= 8) {
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memset(p->auth_key, 0, sizeof(p->auth_key));
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snmpv3_get_engine_id(&engineid, &engineid_len);
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switch (p->auth_algo) {
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case SNMP_V3_AUTH_ALGO_INVAL:
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return ERR_OK;
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#if LWIP_SNMP_V3_CRYPTO
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case SNMP_V3_AUTH_ALGO_MD5:
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snmpv3_password_to_key_md5((const u8_t*)password, strlen(password), (const u8_t*)engineid, engineid_len, p->auth_key);
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return ERR_OK;
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case SNMP_V3_AUTH_ALGO_SHA:
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snmpv3_password_to_key_sha((const u8_t*)password, strlen(password), (const u8_t*)engineid, engineid_len, p->auth_key);
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return ERR_OK;
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#endif
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default:
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return ERR_VAL;
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}
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}
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}
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return ERR_VAL;
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}
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err_t
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snmpv3_set_user_priv_key(const char *username, const char *password)
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{
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struct user_table_entry *p = get_user(username);
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const char *engineid;
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u8_t engineid_len;
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if (p) {
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/* password should be at least 8 characters long */
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if (strlen(password) >= 8) {
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memset(p->priv_key, 0, sizeof(p->priv_key));
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snmpv3_get_engine_id(&engineid, &engineid_len);
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switch (p->auth_algo) {
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case SNMP_V3_AUTH_ALGO_INVAL:
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return ERR_OK;
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#if LWIP_SNMP_V3_CRYPTO
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case SNMP_V3_AUTH_ALGO_MD5:
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snmpv3_password_to_key_md5((const u8_t*)password, strlen(password), (const u8_t*)engineid, engineid_len, p->priv_key);
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return ERR_OK;
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case SNMP_V3_AUTH_ALGO_SHA:
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snmpv3_password_to_key_sha((const u8_t*)password, strlen(password), (const u8_t*)engineid, engineid_len, p->priv_key);
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return ERR_OK;
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#endif
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default:
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return ERR_VAL;
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}
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}
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}
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return ERR_VAL;
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}
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/**
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* @brief Get the storage type of the given username.
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*
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* @param[in] username pointer to the username
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* @param[out] type the storage type
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*
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* @return ERR_OK if the user was found, ERR_VAL if not.
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*/
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err_t
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snmpv3_get_user_storagetype(const char *username, snmpv3_user_storagetype_t *type)
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{
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if (get_user(username) != NULL) {
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/* Found user in user table
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* In this dummy implementation, storage is permanent because no user can be deleted.
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* All changes to users are lost after a reboot.*/
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*type = SNMP_V3_USER_STORAGETYPE_PERMANENT;
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return ERR_OK;
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}
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return ERR_VAL;
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}
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/**
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* @param username is a pointer to a string.
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* @param auth_algo is a pointer to u8_t. The implementation has to set this if user was found.
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* @param auth_key is a pointer to a pointer to a string. Implementation has to set this if user was found.
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* @param priv_algo is a pointer to u8_t. The implementation has to set this if user was found.
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* @param priv_key is a pointer to a pointer to a string. Implementation has to set this if user was found.
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*/
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err_t
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snmpv3_get_user(const char* username, snmpv3_auth_algo_t *auth_algo, u8_t *auth_key, snmpv3_priv_algo_t *priv_algo, u8_t *priv_key)
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{
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const struct user_table_entry *p;
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/* The msgUserName specifies the user (principal) on whose behalf the
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message is being exchanged. Note that a zero-length userName will
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not match any user, but it can be used for snmpEngineID discovery. */
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if(strlen(username) == 0) {
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return ERR_OK;
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}
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p = get_user(username);
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if (!p) {
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return ERR_VAL;
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}
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if (auth_algo != NULL) {
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*auth_algo = p->auth_algo;
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}
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if(auth_key != NULL) {
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MEMCPY(auth_key, p->auth_key, sizeof(p->auth_key));
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}
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if (priv_algo != NULL) {
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*priv_algo = p->priv_algo;
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}
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if(priv_key != NULL) {
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MEMCPY(priv_key, p->priv_key, sizeof(p->priv_key));
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}
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return ERR_OK;
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}
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/**
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* Get engine ID from persistence
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* @param id
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* @param len
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*/
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void
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snmpv3_get_engine_id(const char **id, u8_t *len)
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{
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*id = snmpv3_engineid;
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*len = snmpv3_engineid_len;
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}
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/**
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* Store engine ID in persistence
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* @param id
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* @param len
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*/
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err_t
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snmpv3_set_engine_id(const char *id, u8_t len)
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{
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MEMCPY(snmpv3_engineid, id, len);
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snmpv3_engineid_len = len;
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return ERR_OK;
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}
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/**
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* Get engine boots from persistence. Must be increased on each boot.
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* @return
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*/
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u32_t
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snmpv3_get_engine_boots(void)
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{
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return engineboots;
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}
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/**
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* Store engine boots in persistence
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* @param boots
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*/
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void
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snmpv3_set_engine_boots(u32_t boots)
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{
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engineboots = boots;
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}
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/**
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* RFC3414 2.2.2.
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* Once the timer reaches 2147483647 it gets reset to zero and the
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* engine boot ups get incremented.
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*/
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u32_t
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snmpv3_get_engine_time(void)
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{
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return enginetime;
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}
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||||||
/**
|
|
||||||
* Reset current engine time to 0
|
|
||||||
*/
|
|
||||||
void
|
|
||||||
snmpv3_reset_engine_time(void)
|
|
||||||
{
|
|
||||||
enginetime = 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Initialize dummy SNMPv3 implementation
|
|
||||||
*/
|
|
||||||
void
|
|
||||||
snmpv3_dummy_init(void)
|
|
||||||
{
|
|
||||||
snmpv3_set_engine_id("\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02", 12);
|
|
||||||
|
|
||||||
snmpv3_set_user_auth_algo("lwip", SNMP_V3_AUTH_ALGO_SHA);
|
|
||||||
snmpv3_set_user_auth_key("lwip", "maplesyrup");
|
|
||||||
|
|
||||||
snmpv3_set_user_priv_algo("lwip", SNMP_V3_PRIV_ALGO_DES);
|
|
||||||
snmpv3_set_user_priv_key("lwip", "maplesyrup");
|
|
||||||
|
|
||||||
/* Start the engine time timer */
|
|
||||||
snmpv3_enginetime_timer(NULL);
|
|
||||||
}
|
|
||||||
|
|
||||||
#endif /* LWIP_SNMP && LWIP_SNMP_V3 */
|
|
||||||
@ -1,52 +0,0 @@
|
|||||||
/**
|
|
||||||
* @file
|
|
||||||
* Dummy SNMPv3 functions.
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Copyright (c) 2017 Dirk Ziegelmeier.
|
|
||||||
* 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: Dirk Ziegelmeier <dziegel@gmx.de>
|
|
||||||
*/
|
|
||||||
|
|
||||||
#ifndef LWIP_HDR_APPS_SNMP_V3_DUMMY_H
|
|
||||||
#define LWIP_HDR_APPS_SNMP_V3_DUMMY_H
|
|
||||||
|
|
||||||
#include "lwip/apps/snmp_opts.h"
|
|
||||||
#include "lwip/err.h"
|
|
||||||
|
|
||||||
#if LWIP_SNMP && LWIP_SNMP_V3
|
|
||||||
|
|
||||||
err_t snmpv3_set_user_auth_algo(const char *username, snmpv3_auth_algo_t algo);
|
|
||||||
err_t snmpv3_set_user_priv_algo(const char *username, snmpv3_priv_algo_t algo);
|
|
||||||
err_t snmpv3_set_user_auth_key(const char *username, const char *password);
|
|
||||||
err_t snmpv3_set_user_priv_key(const char *username, const char *password);
|
|
||||||
|
|
||||||
void snmpv3_dummy_init(void);
|
|
||||||
|
|
||||||
#endif /* LWIP_SNMP && LWIP_SNMP_V3 */
|
|
||||||
|
|
||||||
#endif /* LWIP_HDR_APPS_SNMP_V3_DUMMY_H */
|
|
||||||
@ -67,7 +67,6 @@ typedef enum
|
|||||||
} snmpv3_priv_mode_t;
|
} snmpv3_priv_mode_t;
|
||||||
|
|
||||||
s32_t snmpv3_get_engine_boots_internal(void);
|
s32_t snmpv3_get_engine_boots_internal(void);
|
||||||
s32_t snmpv3_get_engine_time_internal(void);
|
|
||||||
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);
|
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);
|
||||||
err_t snmpv3_crypt(struct snmp_pbuf_stream* stream, u16_t length, const u8_t* key,
|
err_t snmpv3_crypt(struct snmp_pbuf_stream* stream, u16_t length, const u8_t* key,
|
||||||
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);
|
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);
|
||||||
|
|||||||
@ -85,6 +85,7 @@ err_t snmpv3_get_username(char *username, u8_t index);
|
|||||||
/* The following functions are provided by the SNMPv3 agent */
|
/* The following functions are provided by the SNMPv3 agent */
|
||||||
|
|
||||||
void snmpv3_engine_id_changed(void);
|
void snmpv3_engine_id_changed(void);
|
||||||
|
s32_t snmpv3_get_engine_time_internal(void);
|
||||||
|
|
||||||
void snmpv3_password_to_key_md5(
|
void snmpv3_password_to_key_md5(
|
||||||
const u8_t *password, /* IN */
|
const u8_t *password, /* IN */
|
||||||
|
|||||||
Loading…
x
Reference in New Issue
Block a user