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a62e4452a2
Inspired by Marco Veeneman. Change signature of get_value function to return s16_t, where values <0 indicate an error. This is mapped to SNMP_ERR_GENERROR.
228 lines
8.7 KiB
C
228 lines
8.7 KiB
C
/**
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* @file
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* Management Information Base II (RFC1213) SNMP objects and functions.
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*/
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/*
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* Copyright (c) 2006 Axon Digital Design B.V., The Netherlands.
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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: Dirk Ziegelmeier <dziegel@gmx.de>
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* Christiaan Simons <christiaan.simons@axon.tv>
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*/
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#include "lwip/snmp.h"
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#include "lwip/apps/snmp.h"
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#include "lwip/apps/snmp_core.h"
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#include "lwip/apps/snmp_mib2.h"
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#include "lwip/apps/snmp_scalar.h"
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#if LWIP_SNMP && SNMP_LWIP_MIB2
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#define MIB2_AUTH_TRAPS_ENABLED 1
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#define MIB2_AUTH_TRAPS_DISABLED 2
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/* --- snmp .1.3.6.1.2.1.11 ----------------------------------------------------- */
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static s16_t
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snmp_get_value(const struct snmp_scalar_array_node_def *node, void *value)
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{
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u32_t *uint_ptr = (u32_t*)value;
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switch (node->oid) {
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case 1: /* snmpInPkts */
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*uint_ptr = snmp_stats.inpkts;
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break;
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case 2: /* snmpOutPkts */
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*uint_ptr = snmp_stats.outpkts;
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break;
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case 3: /* snmpInBadVersions */
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*uint_ptr = snmp_stats.inbadversions;
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break;
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case 4: /* snmpInBadCommunityNames */
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*uint_ptr = snmp_stats.inbadcommunitynames;
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break;
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case 5: /* snmpInBadCommunityUses */
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*uint_ptr = snmp_stats.inbadcommunityuses;
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break;
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case 6: /* snmpInASNParseErrs */
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*uint_ptr = snmp_stats.inasnparseerrs;
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break;
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case 8: /* snmpInTooBigs */
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*uint_ptr = snmp_stats.intoobigs;
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break;
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case 9: /* snmpInNoSuchNames */
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*uint_ptr = snmp_stats.innosuchnames;
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break;
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case 10: /* snmpInBadValues */
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*uint_ptr = snmp_stats.inbadvalues;
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break;
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case 11: /* snmpInReadOnlys */
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*uint_ptr = snmp_stats.inreadonlys;
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break;
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case 12: /* snmpInGenErrs */
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*uint_ptr = snmp_stats.ingenerrs;
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break;
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case 13: /* snmpInTotalReqVars */
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*uint_ptr = snmp_stats.intotalreqvars;
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break;
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case 14: /* snmpInTotalSetVars */
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*uint_ptr = snmp_stats.intotalsetvars;
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break;
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case 15: /* snmpInGetRequests */
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*uint_ptr = snmp_stats.ingetrequests;
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break;
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case 16: /* snmpInGetNexts */
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*uint_ptr = snmp_stats.ingetnexts;
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break;
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case 17: /* snmpInSetRequests */
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*uint_ptr = snmp_stats.insetrequests;
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break;
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case 18: /* snmpInGetResponses */
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*uint_ptr = snmp_stats.ingetresponses;
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break;
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case 19: /* snmpInTraps */
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*uint_ptr = snmp_stats.intraps;
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break;
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case 20: /* snmpOutTooBigs */
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*uint_ptr = snmp_stats.outtoobigs;
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break;
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case 21: /* snmpOutNoSuchNames */
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*uint_ptr = snmp_stats.outnosuchnames;
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break;
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case 22: /* snmpOutBadValues */
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*uint_ptr = snmp_stats.outbadvalues;
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break;
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case 24: /* snmpOutGenErrs */
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*uint_ptr = snmp_stats.outgenerrs;
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break;
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case 25: /* snmpOutGetRequests */
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*uint_ptr = snmp_stats.outgetrequests;
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break;
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case 26: /* snmpOutGetNexts */
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*uint_ptr = snmp_stats.outgetnexts;
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break;
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case 27: /* snmpOutSetRequests */
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*uint_ptr = snmp_stats.outsetrequests;
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break;
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case 28: /* snmpOutGetResponses */
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*uint_ptr = snmp_stats.outgetresponses;
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break;
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case 29: /* snmpOutTraps */
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*uint_ptr = snmp_stats.outtraps;
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break;
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case 30: /* snmpEnableAuthenTraps */
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if (snmp_get_auth_traps_enabled() == SNMP_AUTH_TRAPS_DISABLED) {
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*uint_ptr = MIB2_AUTH_TRAPS_DISABLED;
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} else {
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*uint_ptr = MIB2_AUTH_TRAPS_ENABLED;
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}
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break;
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case 31: /* snmpSilentDrops */
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*uint_ptr = 0; /* not supported */
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break;
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case 32: /* snmpProxyDrops */
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*uint_ptr = 0; /* not supported */
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break;
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default:
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LWIP_DEBUGF(SNMP_MIB_DEBUG,("snmp_get_value(): unknown id: %"S32_F"\n", node->oid));
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return 0;
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}
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return sizeof(*uint_ptr);
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}
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static snmp_err_t
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snmp_set_test(const struct snmp_scalar_array_node_def *node, u16_t len, void *value)
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{
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snmp_err_t ret = SNMP_ERR_WRONGVALUE;
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LWIP_UNUSED_ARG(len);
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if (node->oid == 30) {
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/* snmpEnableAuthenTraps */
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s32_t *sint_ptr = (s32_t*)value;
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/* we should have writable non-volatile mem here */
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if ((*sint_ptr == MIB2_AUTH_TRAPS_DISABLED) || (*sint_ptr == MIB2_AUTH_TRAPS_ENABLED)) {
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ret = SNMP_ERR_NOERROR;
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}
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}
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return ret;
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}
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static snmp_err_t
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snmp_set_value(const struct snmp_scalar_array_node_def *node, u16_t len, void *value)
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{
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LWIP_UNUSED_ARG(len);
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if (node->oid == 30) {
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/* snmpEnableAuthenTraps */
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s32_t *sint_ptr = (s32_t*)value;
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if (*sint_ptr == MIB2_AUTH_TRAPS_DISABLED) {
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snmp_set_auth_traps_enabled(SNMP_AUTH_TRAPS_DISABLED);
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} else {
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snmp_set_auth_traps_enabled(SNMP_AUTH_TRAPS_ENABLED);
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}
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}
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return SNMP_ERR_NOERROR;
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}
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/* the following nodes access variables in SNMP stack (snmp_stats) from SNMP worker thread -> OK, no sync needed */
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static const struct snmp_scalar_array_node_def snmp_nodes[] = {
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{ 1, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpInPkts */
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{ 2, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpOutPkts */
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{ 3, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpInBadVersions */
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{ 4, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpInBadCommunityNames */
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{ 5, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpInBadCommunityUses */
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{ 6, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpInASNParseErrs */
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{ 8, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpInTooBigs */
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{ 9, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpInNoSuchNames */
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{10, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpInBadValues */
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{11, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpInReadOnlys */
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{12, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpInGenErrs */
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{13, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpInTotalReqVars */
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{14, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpInTotalSetVars */
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{15, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpInGetRequests */
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{16, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpInGetNexts */
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{17, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpInSetRequests */
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{18, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpInGetResponses */
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{19, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpInTraps */
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{20, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpOutTooBigs */
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{21, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpOutNoSuchNames */
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{22, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpOutBadValues */
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{24, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpOutGenErrs */
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{25, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpOutGetRequests */
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{26, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpOutGetNexts */
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{27, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpOutSetRequests */
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{28, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpOutGetResponses */
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{29, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpOutTraps */
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{30, SNMP_ASN1_TYPE_INTEGER, SNMP_NODE_INSTANCE_READ_WRITE}, /* snmpEnableAuthenTraps */
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{31, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY}, /* snmpSilentDrops */
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{32, SNMP_ASN1_TYPE_COUNTER, SNMP_NODE_INSTANCE_READ_ONLY} /* snmpProxyDrops */
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};
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const struct snmp_scalar_array_node snmp_mib2_snmp_root = SNMP_SCALAR_CREATE_ARRAY_NODE(11, snmp_nodes, snmp_get_value, snmp_set_test, snmp_set_value);
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#endif /* LWIP_SNMP && SNMP_LWIP_MIB2 */
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