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Fix compile of SNMPv3 code with MSVC

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This commit is contained in:
Dirk Ziegelmeier 2016-08-19 12:21:01 +02:00
parent 64f79e7ffc
commit 12609c951c
2 changed files with 21 additions and 15 deletions
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30
src/apps/snmp/snmp_msg.c
View File

@ -650,11 +650,12 @@ snmp_parse_inbound_frame(struct snmp_request *request)
#if LWIP_SNMP_V3
if (request->version == SNMP_VERSION_3) {
u16_t u16_value;
u16_t inbound_msgAuthenticationParameters_offset;
/* SNMPv3 doesn't use communities */
/* @todo: Differentiate read/write access */
strcpy((char*)request->community, snmp_community);
request->community_strlen = strlen(snmp_community);
request->community_strlen = (u16_t)strlen(snmp_community);
/* RFC3414 globalData */
IF_PARSE_EXEC(snmp_asn1_dec_tlv(&pbuf_stream, &tlv));
@ -687,7 +688,7 @@ snmp_parse_inbound_frame(struct snmp_request *request)
IF_PARSE_ASSERT(parent_tlv_value_len > 0);
IF_PARSE_EXEC(snmp_asn1_dec_s32t(&pbuf_stream, tlv.value_len, &s32_value));
request->msg_flags = s32_value;
request->msg_flags = (u8_t)s32_value;
/* decode msgSecurityModel */
IF_PARSE_EXEC(snmp_asn1_dec_tlv(&pbuf_stream, &tlv));
@ -724,7 +725,7 @@ snmp_parse_inbound_frame(struct snmp_request *request)
IF_PARSE_EXEC(snmp_asn1_dec_raw(&pbuf_stream, tlv.value_len, request->msg_authoritative_engine_id,
&u16_value, SNMP_V3_MAX_ENGINE_ID_LENGTH));
request->msg_authoritative_engine_id_len = u16_value;
request->msg_authoritative_engine_id_len = (u8_t)u16_value;
/* msgAuthoritativeEngineBoots */
IF_PARSE_EXEC(snmp_asn1_dec_tlv(&pbuf_stream, &tlv));
@ -749,7 +750,7 @@ snmp_parse_inbound_frame(struct snmp_request *request)
IF_PARSE_EXEC(snmp_asn1_dec_raw(&pbuf_stream, tlv.value_len, request->msg_user_name,
&u16_value, SNMP_V3_MAX_USER_LENGTH));
request->msg_user_name_len = u16_value;
request->msg_user_name_len = (u8_t)u16_value;
/* @todo: Implement unknown user error response */
IF_PARSE_EXEC(snmpv3_get_user((char*)request->msg_user_name, NULL, NULL, NULL, NULL));
@ -760,7 +761,7 @@ snmp_parse_inbound_frame(struct snmp_request *request)
parent_tlv_value_len -= SNMP_ASN1_TLV_LENGTH(tlv);
IF_PARSE_ASSERT(parent_tlv_value_len > 0);
/* Remember position */
u16_t inbound_msgAuthenticationParameters_offset = pbuf_stream.offset;
inbound_msgAuthenticationParameters_offset = pbuf_stream.offset;
LWIP_UNUSED_ARG(inbound_msgAuthenticationParameters_offset);
/* Read auth parameters */
IF_PARSE_ASSERT(tlv.value_len <= SNMP_V3_MAX_AUTH_PARAM_LENGTH);
@ -769,18 +770,19 @@ snmp_parse_inbound_frame(struct snmp_request *request)
#if LWIP_SNMP_V3_CRYPTO
if (request->msg_flags & SNMP_V3_AUTH_FLAG) {
/* Rewind stream */
IF_PARSE_EXEC(snmp_pbuf_stream_init(&pbuf_stream, request->inbound_pbuf, 0, request->inbound_pbuf->tot_len));
IF_PARSE_EXEC(snmp_pbuf_stream_seek_abs(&pbuf_stream, inbound_msgAuthenticationParameters_offset));
/* Set auth parameters to zero for verification */
const u8_t zero_arr[SNMP_V3_MAX_AUTH_PARAM_LENGTH] = { 0 };
IF_PARSE_EXEC(snmp_asn1_enc_raw(&pbuf_stream, zero_arr, tlv.value_len));
/* Verify authentication */
u8_t key[20];
u8_t algo;
u8_t hmac[LWIP_MAX(SNMP_V3_SHA_LEN, SNMP_V3_MD5_LEN)];
struct snmp_pbuf_stream auth_stream;
/* Rewind stream */
IF_PARSE_EXEC(snmp_pbuf_stream_init(&pbuf_stream, request->inbound_pbuf, 0, request->inbound_pbuf->tot_len));
IF_PARSE_EXEC(snmp_pbuf_stream_seek_abs(&pbuf_stream, inbound_msgAuthenticationParameters_offset));
/* Set auth parameters to zero for verification */
IF_PARSE_EXEC(snmp_asn1_enc_raw(&pbuf_stream, zero_arr, tlv.value_len));
/* Verify authentication */
IF_PARSE_EXEC(snmp_pbuf_stream_init(&auth_stream, request->inbound_pbuf, 0, request->inbound_pbuf->tot_len));
IF_PARSE_EXEC(snmpv3_get_user((char*)request->msg_user_name, &algo, key, NULL, NULL));
@ -839,7 +841,7 @@ snmp_parse_inbound_frame(struct snmp_request *request)
IF_PARSE_EXEC(snmp_asn1_dec_raw(&pbuf_stream, tlv.value_len, request->context_engine_id,
&u16_value, SNMP_V3_MAX_ENGINE_ID_LENGTH));
request->context_engine_id_len = u16_value;
request->context_engine_id_len = (u8_t)u16_value;
/* contextName */
IF_PARSE_EXEC(snmp_asn1_dec_tlv(&pbuf_stream, &tlv));
@ -849,7 +851,7 @@ snmp_parse_inbound_frame(struct snmp_request *request)
IF_PARSE_EXEC(snmp_asn1_dec_raw(&pbuf_stream, tlv.value_len, request->context_name,
&u16_value, SNMP_V3_MAX_ENGINE_ID_LENGTH));
request->context_name_len = u16_value;
request->context_name_len = (u8_t)u16_value;
} else
#endif
{

6
src/include/lwip/apps/snmp_opts.h
View File

@ -283,7 +283,11 @@
#endif
#ifndef LWIP_SNMP_V3_CRYPTO
#define LWIP_SNMP_V3_CRYPTO LWIP_SNMP_V3
#define LWIP_SNMP_V3_CRYPTO LWIP_SNMP_V3
#endif
#ifndef LWIP_SNMP_V3_MBEDTLS
#define LWIP_SNMP_V3_MBEDTLS LWIP_SNMP_V3
#endif
#endif /* LWIP_HDR_SNMP_OPTS_H */