/**
* Initialize the agent. Calls into init_agent_read_config to set tha app's
* configuration file in the appropriate default storage space,
* NETSNMP_DS_LIB_APPTYPE. Need to call init_agent before calling init_snmp.
*
* @param app the configuration file to be read in, gets stored in default
* storage
*
* @return Returns non-zero on failure and zero on success.
*
* @see init_snmp
*/
int
init_agent(const char *app)
{
int r = 0;
if(++done_init_agent > 1) {
snmp_log(LOG_WARNING, "ignoring extra call to init_agent (%d)\n",
done_init_agent);
return r;
}
/*
* get current time (ie, the time the agent started)
*/
gettimeofday(&starttime, NULL);
starttime.tv_sec--;
starttime.tv_usec += 1000000L;
/*
* we handle alarm signals ourselves in the select loop
*/
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_ALARM_DONT_USE_SIG, 1);
#ifdef NETSNMP_CAN_USE_NLIST
init_kmem("/dev/kmem");
#endif
setup_tree();
/* add by frank */
/*´´½¨ÓëÊý¾Ý¿âÄ£¿é»¥³âͨѶµÄÍⲿSOCKET½Ó¿Ú*/
dbsdev = dbsOpen(MID_SNMP);
if( NULL != dbsdev )
{
dbsWaitModule(dbsdev, MF_CMM|MF_ALARM|MF_TM);
//printf("init_agent: dbsOpen\n");
}
else
{
fprintf(stderr,"ERROR: snmpd->dbsOpen error, exited !\n");
}
if( CMM_SUCCESS != snmp2cmm_init() )
{
printf("module snmpd snmp2cmm_init error\n");
dbs_sys_log(dbsdev, DBS_LOG_ERR, "module snmpd snmp2cmm_init error");
}
init_agent_read_config(app);
#ifdef TESTING
auto_nlist_print_tree(-2, 0);
#endif
_init_agent_callback_transport();
netsnmp_init_helpers();
init_traps();
netsnmp_container_init_list();
#if defined(USING_AGENTX_SUBAGENT_MODULE) || defined(USING_AGENTX_MASTER_MODULE)
/*
* initialize agentx configs
*/
agentx_config_init();
if(netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE) == SUB_AGENT)
subagent_init();
#endif
/*
* Register configuration tokens from transport modules.
*/
#ifdef NETSNMP_TRANSPORT_UDP_DOMAIN
netsnmp_udp_agent_config_tokens_register();
#endif
#ifdef NETSNMP_TRANSPORT_UDPIPV6_DOMAIN
netsnmp_udp6_agent_config_tokens_register();
#endif
#ifdef NETSNMP_TRANSPORT_UNIX_DOMAIN
netsnmp_unix_agent_config_tokens_register();
#endif
#ifdef NETSNMP_EMBEDDED_PERL
init_perl();
#endif
#ifdef USING_AGENTX_SUBAGENT_MODULE
/*
* don't init agent modules for a sub-agent
*/
if (netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE) == SUB_AGENT)
return r;
#endif
# include "agent_module_inits.h"
return r;
} /* end init_agent() */
/**
* Initialize the agent. Calls into init_agent_read_config to set tha app's
* configuration file in the appropriate default storage space,
* NETSNMP_DS_LIB_APPTYPE. Need to call init_agent before calling init_snmp.
*
* @param app the configuration file to be read in, gets stored in default
* storage
*
* @return Returns non-zero on failure and zero on success.
*
* @see init_snmp
*/
int
init_agent(const char *app)
{
int r = 0;
if(++done_init_agent > 1) {
snmp_log(LOG_WARNING, "ignoring extra call to init_agent (%d)\n",
done_init_agent);
return r;
}
/*
* get current time (ie, the time the agent started)
*/
gettimeofday(&starttime, NULL);
starttime.tv_sec--;
starttime.tv_usec += 1000000L;
/*
* we handle alarm signals ourselves in the select loop
*/
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_ALARM_DONT_USE_SIG, 1);
#ifdef CAN_USE_NLIST
init_kmem("/dev/kmem");
#endif
setup_tree();
init_agent_read_config(app);
#ifdef TESTING
auto_nlist_print_tree(-2, 0);
#endif
_init_agent_callback_transport();
netsnmp_init_helpers();
init_traps();
netsnmp_container_init_list();
#if defined(USING_AGENTX_SUBAGENT_MODULE) || defined(USING_AGENTX_MASTER_MODULE)
/*
* initialize agentx configs
*/
agentx_config_init();
if(netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE) == SUB_AGENT)
subagent_init();
#endif
/*
* Register configuration tokens from transport modules.
*/
#ifdef SNMP_TRANSPORT_UDP_DOMAIN
netsnmp_udp_agent_config_tokens_register();
#endif
#ifdef SNMP_TRANSPORT_UDPIPV6_DOMAIN
netsnmp_udp6_agent_config_tokens_register();
#endif
#ifdef SNMP_TRANSPORT_UNIX_DOMAIN
netsnmp_unix_agent_config_tokens_register();
#endif
#ifdef NETSNMP_EMBEDDED_PERL
init_perl();
#endif
#ifdef USING_AGENTX_SUBAGENT_MODULE
/*
* don't init agent modules for a sub-agent
*/
if (netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE) == SUB_AGENT)
return r;
#endif
# include "agent_module_inits.h"
return r;
} /* end init_agent() */
int
main(int argc, char *argv[])
{
int arg;
char *prognam;
char *cp = NULL;
const char* sysUpTime = NULL;
/* initialize tcpip, if necessary */
SOCK_STARTUP;
prognam = strrchr(argv[0], '/');
if (prognam)
++prognam;
else
prognam = argv[0];
putenv(strdup("POSIXLY_CORRECT=1"));
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DISABLE_PERSISTENT_LOAD, 1);
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DISABLE_PERSISTENT_SAVE, 1);
while ((arg = getopt(argc, argv, ":Vhm:M:D:dP:L:U:c:x:")) != -1) {
switch (arg) {
case 'h':
usage(prognam);
result = 0;
goto out;
case 'm':
setenv("MIBS", optarg, 1);
break;
case 'M':
setenv("MIBDIRS", optarg, 1);
break;
case 'c':
context = optarg;
contextLen = strlen(context);
break;
case 'D':
debug_register_tokens(optarg);
snmp_set_do_debugging(1);
break;
case 'd':
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DUMP_PACKET, 1);
break;
case 'U':
sysUpTime = optarg;
break;
case 'V':
fprintf(stderr, "NET-SNMP version: %s\n", netsnmp_get_version());
result = 0;
goto out;
#ifndef DISABLE_MIB_LOADING
case 'P':
cp = snmp_mib_toggle_options(optarg);
if (cp != NULL) {
fprintf(stderr, "Unknown parser option to -P: %c.\n", *cp);
usage(prognam);
goto out;
}
break;
#endif /* DISABLE_MIB_LOADING */
case 'L':
if (snmp_log_options(optarg, argc, argv) < 0)
goto out;
break;
case 'x':
if (optarg != NULL) {
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_X_SOCKET, optarg);
} else
usage(argv[0]);
break;
case ':':
fprintf(stderr, "Option -%c requires an operand\n", optopt);
usage(prognam);
goto out;
case '?':
fprintf(stderr, "Unrecognized option: -%c\n", optopt);
usage(prognam);
goto out;
}
}
arg = optind;
init_snmp(NETSNMP_APPLICATION_CONFIG_TYPE);
agentx_config_init();
/* NOTIFY varlist */
pdu = pdu_create_opt_context(AGENTX_MSG_NOTIFY, context, contextLen);
if (sysUpTime)
snmp_add_var(pdu, sysuptime_oid, sysuptime_oid_len, 't', sysUpTime);
if (arg == argc) {
fprintf(stderr, "Missing trap-oid parameter\n");
usage(prognam);
goto out;
}
if (snmp_add_var(pdu, snmptrap_oid, snmptrap_oid_len, 'o', argv[arg])) {
snmp_perror(argv[arg]);
goto out;
}
++arg;
while (arg < argc) {
oid name[MAX_OID_LEN];
size_t name_length = MAX_OID_LEN;
arg += 3;
if (arg > argc) {
fprintf(stderr, "%s: Missing type/value for variable\n",
argv[arg - 3]);
goto out;
}
if (!snmp_parse_oid(argv[arg - 3], name, &name_length)) {
snmp_perror(argv[arg - 3]);
goto out;
}
if (snmp_add_var(pdu, name, name_length, argv[arg - 2][0],
argv[arg - 1]) != 0) {
snmp_perror(argv[arg - 3]);
goto out;
}
}
packetid = 0;
state = &Connecting;
next_state = NULL;
if(state->entry) state->entry(state);
/* main loop here... */
for(;;) {
int block = 1;
int numfds = 0;
int count;
fd_set fdset;
struct timeval timeout;
while(next_state) {
if(state->exit) state->exit(state);
DEBUGMSGTL(("process", "State transition: %s -> %s\n",
state->name, next_state->name));
state = next_state;
next_state = NULL;
if(state->entry) state->entry(state);
}
if(state == &Exit)
break;
FD_ZERO(&fdset);
snmp_sess_select_info(sessp, &numfds, &fdset, &timeout, &block);
count = select(numfds, &fdset, NULL, NULL, !block ? &timeout : NULL);
if (count > 0)
snmp_sess_read(sessp, &fdset);
else if (count == 0)
snmp_sess_timeout(sessp);
else if (errno != EINTR) {
snmp_log(LOG_ERR, "select error [%s]\n", strerror(errno));
change_state(&Exit);
}
}
/* at shutdown time */
snmp_free_pdu(pdu);
pdu = NULL;
snmp_shutdown(NETSNMP_APPLICATION_CONFIG_TYPE);
out:
SOCK_CLEANUP;
return result;
}
