我正在尝试创建一个简单的 SNMP 陷阱生成器程序,以便更好地理解 Net-SNMP 库。使用以下代码,我不断收到错误
snmptrap:找到配置数据,但无法配置传输
会话未打开
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include "snmptrap_simple.h"
int main (int argc, char **argv) {
oid objid_enterprise[] = { 1, 3, 6, 1, 4, 1, 3, 1, 1 };
oid objid_sysdescr[] = { 1, 3, 6, 1, 2, 1, 1, 1, 0 };
oid objid_sysuptime[] = { 1, 3, 6, 1, 2, 1, 1, 3, 0 };
oid objid_snmptrap[] = { 1, 3, 6, 1, 6, 3, 1, 1, 4, 1, 0 };
netsnmp_session session, *ss;
netsnmp_pdu *pdu, *response;
oid name[MAX_OID_LEN];
size_t name_length;
int arg;
int status;
char *trap = NULL;
char *prognam;
int exitval = 0;
session.version = SNMP_VERSION_1;
session.retries = 2;
char address[] = "127.0.0.1";
char *ptrAddress = address;
session.peername = ptrAddress;
u_char comm[] = "public";
const u_char *community = comm;
session.community = community;
session.community_len = strlen(session.community);
/* windows32 specific initialization (is a noop on unix) */
SOCK_STARTUP;
// open snmp session
ss = snmp_open(&session);
if (!ss) {
snmp_perror("ack");
snmp_sess_perror("snmptrap", &session);
snmp_log(LOG_DEBUG, "Session did not open\n");
exit(2);
}
snmp_log(LOG_DEBUG, "DEBUG OUTPUT");
// create the PDU
pdu = snmp_pdu_create(SNMP_MSG_TRAP);
if ( !pdu ) {
fprintf(stderr, "Failed to create trap PDU\n");
SOCK_CLEANUP;
exit(1);
}
// add variables to the PDU
char *value;
*value = '42';
if(snmp_add_var (pdu, name, name_length, 'i', value)){
//void snmp_perror(const char *prog_string)
snmp_perror("add variable");
SOCK_CLEANUP;
exit(1);
};
send_trap_to_sess (&session, pdu);
return 0;
}
我究竟做错了什么?
我在这里有一个代码的 github 存储库:https ://github.com/EhevuTov/tcp2snmp/blob/master/test/snmptrap_simple.c