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snmp_traps.c: Fix compile on Win32 - missing string.h include

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Catch possible strlen returnvalue > 0xffff
This commit is contained in:
Dirk Ziegelmeier 2016-02-23 10:06:46 +01:00
parent 799fe7a5ba
commit 6650eb4cd2
1 changed files with 3 additions and 1 deletions
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4
src/apps/snmp/snmp_traps.c
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@ -35,6 +35,8 @@
#if LWIP_SNMP /* don't build if not configured for use in lwipopts.h */ #if LWIP_SNMP /* don't build if not configured for use in lwipopts.h */
#include <string.h>
#include "lwip/snmp.h" #include "lwip/snmp.h"
#include "lwip/sys.h" #include "lwip/sys.h"
#include "lwip/apps/snmp.h" #include "lwip/apps/snmp.h"
@ -272,7 +274,7 @@ snmp_trap_header_sum(struct snmp_msg_trap *trap)
snmp_asn1_enc_length_cnt(trap->pdulen, &lenlen); snmp_asn1_enc_length_cnt(trap->pdulen, &lenlen);
tot_len += 1 + lenlen; tot_len += 1 + lenlen;
trap->comlen = (u16_t)strlen(snmp_community_trap); trap->comlen = (u16_t)LWIP_MIN(strlen(snmp_community_trap), 0xFFFF);
snmp_asn1_enc_length_cnt(trap->comlen, &lenlen); snmp_asn1_enc_length_cnt(trap->comlen, &lenlen);
tot_len += 1 + lenlen + trap->comlen; tot_len += 1 + lenlen + trap->comlen;