// initialize tames the Net-SNMP library before it is used.
void initialize() {
// Omit type when converting OID variable value to string.
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_QUICK_PRINT, 1);
// Omit type error when converting OID variable value to string.
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_QUICKE_PRINT, 1);
#ifdef NETSNMP_DS_LIB_DONT_LOAD_HOST_FILES
// Don't try to open a .conf file for every getbulk request.
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_DONT_LOAD_HOST_FILES, 1);
#endif
// Disable Net-SNMP logging; this library logs errors.
netsnmp_register_loghandler(NETSNMP_LOGHANDLER_NONE, 0);
}
/* to do: make sure diskio_free_config() gets invoked upon SIGHUP. */
static int
diskio_free_config(int major, int minor, void *serverarg, void *clientarg)
{
DEBUGMSGTL(("diskio", "free config %d\n",
netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_DISKIO_NO_RAM)));
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_DISKIO_NO_FD, 0);
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_DISKIO_NO_LOOP, 0);
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_DISKIO_NO_RAM, 0);
return 0;
}
/*
* initialize
*/
void snmpInitialize(tInterfaceList *interfaceList)
{
tOidList *oidList;
/* initialize library */
init_snmp("snmppoller");
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_QUICK_PRINT, TRUE);
unsigned int i = 0;
while (i < interfaceList->count) {
syslog(LOG_DEBUG, "snmpInitialize: %s", interfaceList->interface[i].ip);
oidList = &interfaceList->interface[i].oidList;
unsigned int o = 0;
while (o < oidList->count) {
syslog(LOG_DEBUG, "snmpInitialize: * %s", oidList->oid[o].oidName);
oidList->oid[o].OidLen = sizeof(oidList->oid[o].Oid)/sizeof(oidList->oid[o].Oid[0]);
if (!read_objid(oidList->oid[o].oidName, oidList->oid[o].Oid, &oidList->oid[o].OidLen)) {
syslog(LOG_ERR, "snmpInitialize: read_objid failed for: %d %s", interfaceList->interface[i].id_interface, oidList->oid[o].oidName);
exit(1);
}
o++;
}
i++;
}
}
void snmp_set_mib_parse_label (int save)
{
/*
* 0=strict, 1=underscore OK in label
*/
netsnmp_ds_set_boolean (NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_MIB_PARSE_LABEL, save);
}
static void
proxyOptProc(int argc, char *const *argv, int opt)
{
switch (opt) {
case 'C':
while (*optarg) {
switch (*optarg++) {
case 'n':
optind++;
if (optind < argc) {
context_string = argv[optind - 1];
} else {
config_perror("No context name passed to -Cn");
}
break;
case 'c':
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_IGNORE_NO_COMMUNITY, 1);
break;
default:
config_perror("unknown argument passed to -C");
break;
}
}
break;
default:
break;
/*
* shouldn't get here
*/
}
}
void main()
{
int retries=0;
if(netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,NETSNMP_DS_AGENT_ROLE,1))
{
printf("netsnmp_ds_set_boolean failed");
return;
}
//initialize the agent
while(0!=init_agent("mysnmpagent"))
{
printf("init_agent failed\n");
sleep(1);
}
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,NETSNMP_DS_AGENT_AGENTX_PING_INTERVAL,5);
//mib initialization code
init_mysnmpagent();
init_snmp("mysnmpagent");
keep_running=1;
printf("My agent starting...\n");
while(keep_running)
{
if(-1==agent_check_and_process(1))
printf("agent_check_and process failed\n");
}
stop_server();
return;
}
void snmp_set_mib_comment_term (int save)
{
/*
* 0=strict, 1=EOL terminated
*/
netsnmp_ds_set_boolean (NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_MIB_COMMENT_TERM, save);
}
void *agent_thread(void *arg)
{
ast_verb(2, "Starting %sAgent\n", res_snmp_agentx_subagent ? "Sub" : "");
snmp_enable_stderrlog();
if (res_snmp_agentx_subagent)
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE,
1);
init_agent("asterisk");
init_asterisk_mib();
init_snmp("asterisk");
if (!res_snmp_agentx_subagent)
init_master_agent();
while (res_snmp_dont_stop)
agent_check_and_process(1);
snmp_shutdown("asterisk");
ast_verb(2, "Terminating %sAgent\n", res_snmp_agentx_subagent ? "Sub" : "");
return NULL;
}
int
handle_nsDebugDumpPdu(netsnmp_mib_handler *handler,
netsnmp_handler_registration *reginfo,
netsnmp_agent_request_info *reqinfo,
netsnmp_request_info *requests)
{
long enabled;
netsnmp_request_info *request=NULL;
switch (reqinfo->mode) {
case MODE_GET:
enabled = netsnmp_ds_get_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DUMP_PACKET);
if ( enabled==0 )
enabled=2; /* false */
for (request = requests; request; request=request->next) {
if (request->processed != 0)
continue;
snmp_set_var_typed_value(request->requestvb, ASN_INTEGER,
(u_char*)&enabled, sizeof(enabled));
}
break;
#ifndef NETSNMP_NO_WRITE_SUPPORT
case MODE_SET_RESERVE1:
for (request = requests; request; request=request->next) {
if (request->processed != 0)
continue;
if ( request->status != 0 ) {
return SNMP_ERR_NOERROR; /* Already got an error */
}
if ( request->requestvb->type != ASN_INTEGER ) {
netsnmp_set_request_error(reqinfo, request, SNMP_ERR_WRONGTYPE);
return SNMP_ERR_WRONGTYPE;
}
if (( *request->requestvb->val.integer != 1 ) &&
( *request->requestvb->val.integer != 2 )) {
netsnmp_set_request_error(reqinfo, request, SNMP_ERR_WRONGVALUE);
return SNMP_ERR_WRONGVALUE;
}
}
break;
case MODE_SET_COMMIT:
enabled = *requests->requestvb->val.integer;
if (enabled == 2 ) /* false */
enabled = 0;
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DUMP_PACKET, enabled);
break;
#endif /* !NETSNMP_NO_WRITE_SUPPORT */
}
return SNMP_ERR_NOERROR;
}
/*! \fn void snmp_spine_init()
* \brief wrapper function for init_snmp
*
* Initializes snmp for the given application ID
*
*/
void snmp_spine_init(void) {
#ifdef USE_NET_SNMP
/* Only do numeric output */
#ifdef NETSNMP_DS_LIB_PRINT_NUMERIC_ENUM
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_PRINT_NUMERIC_ENUM, 1);
#endif
/* Prevent update of the snmpapp.conf file */
#ifdef NETSNMP_DS_LIB_DONT_PERSIST_STATE
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_DONT_PERSIST_STATE, 1);
#endif
/* Prevent update of the snmpapp.conf file */
#ifdef NETSNMP_DS_LIB_DISABLE_PERSISTENT_LOAD
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_DISABLE_PERSISTENT_LOAD, 1);
#endif
#ifdef NETSNMP_DS_LIB_DONT_PRINT_UNITS
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_DONT_PRINT_UNITS, 1);
#endif
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_QUICK_PRINT, 1);
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_QUICKE_PRINT, 1);
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_PRINT_BARE_VALUE, 1);
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_NUMERIC_TIMETICKS, 1);
#ifdef PACKAGE_VERSION
/* check that the headers we compiled with match the library we linked with -
apparently not defined in UCD-SNMP...
*/
SPINE_LOG_DEBUG(("DEBUG: SNMP Header Version is %s\n", PACKAGE_VERSION));
SPINE_LOG_DEBUG(("DEBUG: SNMP Library Version is %s\n", netsnmp_get_version()));
if(STRMATCH(PACKAGE_VERSION,netsnmp_get_version())) {
init_snmp("spine");
}else{
/* report the error and quit spine */
die("ERROR: SNMP Library Version Mismatch (%s vs %s)",PACKAGE_VERSION,netsnmp_get_version());
}
#else
SPINE_LOG_DEBUG(("DEBUG: Issues with SNMP Header Version information, assuming old version of Net-SNMP.\n"));
init_snmp("spine");
#endif
#else
ds_set_boolean(DS_LIBRARY_ID, DS_LIB_QUICK_PRINT, 1);
ds_set_boolean(DS_LIBRARY_ID, DS_LIB_PRINT_BARE_VALUE, 1);
ds_set_boolean(DS_LIBRARY_ID, DS_LIB_NUMERIC_TIMETICKS, 1);
init_snmp("spine");
#endif
}
int
snmp_init(selector_t *sel)
{
struct snmp_session session;
#ifdef HAVE_NETSNMP
netsnmp_transport *transport = NULL;
static char *snmp_default_port = "udp:162";
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_MIB_ERRORS,
0);
init_snmp("ipmi_ui");
transport = netsnmp_tdomain_transport(snmp_default_port, 1, "udp");
if (!transport) {
snmp_sess_perror("ipmi_ui", &session);
return -1;
}
#else
void *transport = NULL;
#endif
snmp_sess_init(&session);
session.peername = SNMP_DEFAULT_PEERNAME;
session.version = SNMP_DEFAULT_VERSION;
session.community_len = SNMP_DEFAULT_COMMUNITY_LEN;
session.retries = SNMP_DEFAULT_RETRIES;
session.timeout = SNMP_DEFAULT_TIMEOUT;
session.local_port = SNMP_TRAP_PORT;
session.callback = snmp_input;
session.callback_magic = transport;
session.authenticator = NULL;
session.isAuthoritative = SNMP_SESS_UNKNOWNAUTH;
#ifdef HAVE_NETSNMP
snmp_session = snmp_add(&session, transport, snmp_pre_parse, NULL);
#else
snmp_session = snmp_open_ex(&session, snmp_pre_parse,
NULL, NULL, NULL, NULL);
#endif
if (snmp_session == NULL) {
snmp_sess_perror("ipmi_ui", &session);
return -1;
}
ipmi_sel_set_read_fds_handler(sel,
snmp_add_read_fds,
snmp_check_read_fds,
snmp_check_timeout,
NULL);
return 0;
}
int
handle_nsCacheEnabled(netsnmp_mib_handler *handler,
netsnmp_handler_registration *reginfo,
netsnmp_agent_request_info *reqinfo,
netsnmp_request_info *requests)
{
long enabled;
netsnmp_request_info *request=NULL;
switch (reqinfo->mode) {
case MODE_GET:
enabled = (netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_CACHING)
? NSCACHE_STATUS_ENABLED /* Actually True/False */
: NSCACHE_STATUS_DISABLED );
for (request = requests; request; request=request->next) {
snmp_set_var_typed_value(request->requestvb, ASN_INTEGER,
(u_char*)&enabled, sizeof(enabled));
}
break;
#ifndef NETSNMP_NO_WRITE_SUPPORT
case MODE_SET_RESERVE1:
for (request = requests; request; request=request->next) {
if ( request->status != 0 ) {
return SNMP_ERR_NOERROR; /* Already got an error */
}
if ( request->requestvb->type != ASN_INTEGER ) {
netsnmp_set_request_error(reqinfo, request, SNMP_ERR_WRONGTYPE);
return SNMP_ERR_WRONGTYPE;
}
if ((*request->requestvb->val.integer != NSCACHE_STATUS_ENABLED) &&
(*request->requestvb->val.integer != NSCACHE_STATUS_DISABLED)) {
netsnmp_set_request_error(reqinfo, request, SNMP_ERR_WRONGVALUE);
return SNMP_ERR_WRONGVALUE;
}
}
break;
case MODE_SET_COMMIT:
enabled = *requests->requestvb->val.integer;
if (enabled == NSCACHE_STATUS_DISABLED)
enabled = 0;
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_CACHING, enabled);
break;
#endif /* !NETSNMP_NO_WRITE_SUPPORT */
}
return SNMP_ERR_NOERROR;
}
static void
netsnmp_ds_set_init (void)
{
netsnmp_ds_set_string(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_APPTYPE, DNAME_JNX_EXAMPLED);
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_X_SOCKET, PATH_MASTER_AGENTX);
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_AGENT_ROLE,
SUB_AGENT);
}
int
snmp_subagent_init(void)
{
static int initialized__ = 0;
if(initialized__) {
return 0;
}
snmp_subagent_snmplog_init();
snmp_subagent_client_init();
snmp_register_callback(SNMP_CALLBACK_LIBRARY, SNMP_CALLBACK_LOGGING,
snmp_subagent_snmplog_callback, NULL);
snmp_enable_calllog();
snmp_register_callback(SNMP_CALLBACK_APPLICATION,
SNMPD_CALLBACK_INDEX_START,
snmp_callback_start__, NULL);
snmp_register_callback(SNMP_CALLBACK_APPLICATION,
SNMPD_CALLBACK_INDEX_STOP,
snmp_callback_stop__, NULL);
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE, 1);
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_CONNECTION_WARNINGS, 1);
initialized__ = 1;
#if SNMP_SUBAGENT_CONFIG_INCLUDE_EXAMPLE_CLIENT == 1
snmp_subagent_client_register("snmp_subagent_example_client",
snmp_subagent_example_client, NULL);
#endif
return 0;
}
/* int main (int argc, char **argv) */
int init_ifs_agent()
{
int agentx_subagent=1; /* change this if you want to be a SNMP master agent */
int background = 0; /* change this if you want to run in the background */
int syslog = 0; /* change this if you want to use syslog */
std::cout << ".......1........." << std::endl;
/* print log errors to syslog or stderr */
if (syslog)
snmp_enable_calllog();
else
snmp_enable_stderrlog();
std::cout << ".......1........." << std::endl;
/* we're an agentx subagent? */
if (agentx_subagent) {
/* make us a agentx client. */
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_AGENT_ROLE, 1);
}
/* run in background, if requested */
if (background && netsnmp_daemonize(1, !syslog))
exit(1);
/* initialize tcpip, if necessary */
SOCK_STARTUP;
/* initialize the agent library */
init_agent("infinetfs_agent");
/* initialize mib code here */
/* mib code: init_nstAgentSubagentObject from nstAgentSubagentObject.C */
/* init_nstAgentSubagentObject(); */
init_infinetfs_mib_module();
/* example-demon will be used to read example-demon.conf files. */
init_snmp("infinetfs_agent");
/* If we're going to be a snmp master agent, initial the ports */
if (!agentx_subagent)
init_master_agent(); /* open the port to listen on (defaults to udp:161) */
/* In case we recevie a request to stop (kill -TERM or kill -INT) */
keep_running = 1;
signal(SIGTERM, stop_server);
signal(SIGINT, stop_server);
snmp_log(LOG_INFO,"infinetfs_agent is up and running.\n");
return 0;
}
/*! This function opens up a connection with the master agent specified in
* the snmpstats modules configuration file */
void register_with_master_agent(char *name_to_register_under)
{
/* Set ourselves up as an AgentX Client. */
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_AGENT_ROLE, 1);
/* Initialize TCP if necessary. (Its here for WIN32) compatibility. */
SOCK_STARTUP;
LM_DBG("Connecting to SNMPD MasterX\n");
/* Read in our configuration file to determine master agent ping times
* what port communication is to take place over, etc. */
init_agent("snmpstats");
/* Use a name we can register our agent under. */
init_snmp(name_to_register_under);
LM_DBG("** Connected to SNMPD MasterX\n");
}
int init_snmp_agent(void)
{
int result;
if (user_settings.is_master_agent) {
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_AGENT_ROLE, 1);
} else {
netsnmp_enable_subagent();
}
if (user_settings.agentx_address != NULL) {
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_AGENT_X_SOCKET, user_settings.agentx_address);
}
if (user_settings.daemonize)
snmp_enable_syslog();
else
snmp_enable_stderrlog();
SOCK_STARTUP;
if ((result = init_agent("collectd-agent")) != 0) {
return -1;
}
if ((result = register_value_handlers()) != 0) {
return -1;
}
if ((result = register_table_handlers()) != 0) {
return -1;
}
if (user_settings.is_master_agent) {
init_vacm_vars();
init_usmUser();
}
init_snmp("collectd-snmpd");
if (user_settings.is_master_agent) {
init_master_agent();
}
return 0;
}
static void init_snmp_subagent(const char *agentx_host, int agentx_port)
{
char agentx_socket[128];
int background = 1; /* change this if you want to run in the background */
int syslog = 0; /* change this if you want to use syslog */
snmp_enable_filelog("/var/log/exa_agentx.log", 1);
snmp_log(LOG_INFO, "exa_agentx configured to connect to %s:%d\n",
agentx_host, agentx_port);
/* we're in an agentx subagent */
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_AGENT_ROLE, 1);
sprintf(agentx_socket, "tcp:%s:%d", agentx_host, agentx_port);
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_X_SOCKET, agentx_socket);
/* run in background, if requested */
if (background && netsnmp_daemonize(1, !syslog))
exit(1);
snmp_log(LOG_INFO, "exa_agentx daemonized\n");
/* initialize tcpip, if necessary */
SOCK_STARTUP;
/* initialize the agent library */
init_agent("exa_agentx");
/* initialize mib code here */
/* mib code: init_nstAgentSubagentObject from nstAgentSubagentObject.C */
/* not necessary to just send TRAPs !! */
/* init_mib_int_watch(); */
/* example-demon will be used to read example-demon.conf files. */
init_snmp("exa_agentx");
/* In case we recevie a request to stop (kill -TERM or kill -INT) */
stop = false;
signal(SIGTERM, stop_server);
signal(SIGINT, stop_server);
snmp_log(LOG_INFO, "exa_agentx is up and running.\n");
}
void
maybe_source_perl_startup(void)
{
const char *embedargs[] = { "", "" };
const char *perl_init_file = netsnmp_ds_get_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_PERL_INIT_FILE);
char init_file[SNMP_MAXBUF];
static int have_done_init = 0;
if (have_done_init)
return;
have_done_init = 1;
if (!perl_init_file) {
snprintf(init_file, sizeof(init_file) - 1,
"%s/%s", SNMPSHAREPATH, "snmp_perl.pl");
perl_init_file = init_file;
}
embedargs[1] = perl_init_file;
DEBUGMSGTL(("perl", "initializing perl (%s)\n", embedargs[1]));
my_perl = perl_alloc();
if (!my_perl)
goto bail_out;
perl_construct(my_perl);
if (perl_parse(my_perl, xs_init, 2, (char **) embedargs, NULL))
goto bail_out;
if (perl_run(my_perl))
goto bail_out;
DEBUGMSGTL(("perl", "done initializing perl\n"));
return;
bail_out:
snmp_log(LOG_ERR, "embedded perl support failed to initalize\n");
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_DISABLE_PERL, 1);
return;
}
void
snmp_agent_init(oid *myoid, int len, char *name, struct variable *variables,
int varsize, int varlen)
{
log_message(LOG_INFO, "Starting SNMP subagent");
netsnmp_enable_subagent();
snmp_disable_log();
snmp_enable_calllog();
snmp_register_callback(SNMP_CALLBACK_LIBRARY,
SNMP_CALLBACK_LOGGING,
snmp_keepalived_log,
NULL);
/* Do not handle persistent states */
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DONT_PERSIST_STATE, TRUE);
/* Do not load any MIB */
setenv("MIBS", "", 1);
/* Ping AgentX less often than every 15 seconds: pinging can
block keepalived. We check every 2 minutes. */
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_AGENTX_PING_INTERVAL, 120);
/* We also register a callback to modify default timeout and
retries value. */
snmp_register_callback(SNMP_CALLBACK_LIBRARY,
SNMP_CALLBACK_SESSION_INIT,
snmp_setup_session_cb, NULL);
init_agent(name);
if (register_mib(name, (struct variable *) variables, varsize,
varlen, myoid, len) != MIB_REGISTERED_OK)
log_message(LOG_WARNING, "Unable to register MIB");
register_mib("Keepalived", (struct variable *) global_vars,
sizeof(struct variable8),
sizeof(global_vars)/sizeof(struct variable8),
global_oid, OID_LENGTH(global_oid));
init_snmp(name);
register_sysORTable(global_oid, OID_LENGTH(global_oid) - 1,
"The MIB module for Keepalived");
}
void agentx_parse_master (const char *token, char *cptr)
{
int i = -1;
if (!strcmp (cptr, "agentx") || !strcmp (cptr, "all") || !strcmp (cptr, "yes") || !strcmp (cptr, "on"))
{
i = 1;
snmp_log (LOG_INFO, "Turning on AgentX master support.\n");
}
else if (!strcmp (cptr, "no") || !strcmp (cptr, "off"))
i = 0;
else
i = atoi (cptr);
if (i < 0 || i > 1)
{
netsnmp_config_error ("master '%s' unrecognised", cptr);
}
else
netsnmp_ds_set_boolean (NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_AGENT_AGENTX_MASTER, i);
}
// Set up the SNMP agent. Returns 0 if it succeeds.
int snmp_setup(const char* name)
{
// Make sure we start as a subagent, not a master agent.
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_AGENT_ROLE, 1);
// Use callback-based logging, and integrate it with the Clearwater logger
snmp_enable_calllog();
snmp_register_callback(SNMP_CALLBACK_LIBRARY, SNMP_CALLBACK_LOGGING, logging_callback, NULL);
netsnmp_container_init_list();
int rc = init_agent(name);
if (rc != 0)
{
TRC_WARNING("SNMP AgentX initialization failed");
}
else
{
TRC_STATUS("AgentX agent initialised");
}
return rc;
}
PEGASUS_NAMESPACE_BEGIN
void snmpDeliverTrap_netsnmp::initialize()
{
PEG_METHOD_ENTER(TRC_IND_HANDLER, "snmpDeliverTrap_netsnmp::initialize");
// Defined default MIB modules (in net-snmp-config.h) do not need to be
// loaded and loading them can cause some stderr;
// use environment variable MIBS to override the default MIB modules.
// If there is no MIBS environment variable, add it in.
char* envVar;
envVar = getenv("MIBS");
if (envVar == NULL)
{
putenv("MIBS=");
}
// Initialize the mib reader
netsnmp_set_mib_directory("");
init_mib();
// Initializes the SNMP library
init_snmp("snmpIndicationHandler");
// don't load/save persistent file
#ifdef NETSNMP_DS_LIB_DONT_PERSIST_STATE
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DONT_PERSIST_STATE, 1);
#endif
// windows32 specific initialization (is a NOOP on unix)
SOCK_STARTUP;
PEG_METHOD_EXIT();
}
main(int argc, char *argv[])
#endif
{
char options[128] = "aAc:CdD::efF:g:hHI:L:m:M:no:O:Ptu:vx:X-:";
netsnmp_session *sess_list = NULL, *ss = NULL;
netsnmp_transport *transport = NULL;
int arg, i = 0;
int uid = 0, gid = 0;
int exit_code = 1;
char *cp, *listen_ports = NULL;
#if defined(USING_AGENTX_SUBAGENT_MODULE) && !defined(NETSNMP_SNMPTRAPD_DISABLE_AGENTX)
int agentx_subagent = 1;
#endif
netsnmp_trapd_handler *traph;
#ifndef WIN32
int prepared_sockets = 0;
#endif
#ifndef NETSNMP_NO_SYSTEMD
/* check if systemd has sockets for us and don't close them */
prepared_sockets = netsnmp_sd_listen_fds(0);
#endif
#ifndef WIN32
/*
* close all non-standard file descriptors we may have
* inherited from the shell.
*/
if (!prepared_sockets)
netsnmp_close_fds(2);
#endif
#ifdef SIGTERM
signal(SIGTERM, term_handler);
#endif
#ifdef SIGHUP
signal(SIGHUP, SIG_IGN); /* do not terminate on early SIGHUP */
#endif
#ifdef SIGINT
signal(SIGINT, term_handler);
#endif
#ifdef SIGPIPE
signal(SIGPIPE, SIG_IGN); /* 'Inline' failure of wayward readers */
#endif
/*
* register our configuration handlers now so -H properly displays them
*/
snmptrapd_register_configs( );
#ifdef NETSNMP_USE_MYSQL
snmptrapd_register_sql_configs( );
#endif
#ifdef NETSNMP_SECMOD_USM
init_usm_conf( "snmptrapd" );
#endif /* NETSNMP_SECMOD_USM */
register_config_handler("snmptrapd", "snmpTrapdAddr",
parse_trapd_address, free_trapd_address, "string");
register_config_handler("snmptrapd", "doNotLogTraps",
parse_config_doNotLogTraps, NULL, "(1|yes|true|0|no|false)");
#if HAVE_GETPID
register_config_handler("snmptrapd", "pidFile",
parse_config_pidFile, NULL, "string");
#endif
#ifdef HAVE_UNISTD_H
register_config_handler("snmptrapd", "agentuser",
parse_config_agentuser, NULL, "userid");
register_config_handler("snmptrapd", "agentgroup",
parse_config_agentgroup, NULL, "groupid");
#endif
register_config_handler("snmptrapd", "doNotFork",
parse_config_doNotFork, NULL, "(1|yes|true|0|no|false)");
register_config_handler("snmptrapd", "ignoreAuthFailure",
parse_config_ignoreAuthFailure, NULL, "(1|yes|true|0|no|false)");
register_config_handler("snmptrapd", "outputOption",
parse_config_outputOption, NULL, "string");
/*
* Add some options if they are available.
*/
#if HAVE_GETPID
strcat(options, "p:");
#endif
#ifndef NETSNMP_FEATURE_REMOVE_LOGGING_SYSLOG
#ifdef WIN32
snmp_log_syslogname(app_name_long);
#else
snmp_log_syslogname(app_name);
#endif
#endif /* NETSNMP_FEATURE_REMOVE_LOGGING_SYSLOG */
/*
* Now process options normally.
*/
while ((arg = getopt(argc, argv, options)) != EOF) {
switch (arg) {
case '-':
if (strcasecmp(optarg, "help") == 0 ||
strcasecmp(optarg, "version") == 0) {
version();
exit_code = 0;
goto out;
}
handle_long_opt(optarg);
break;
case 'a':
dropauth = 1;
break;
case 'A':
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_APPEND_LOGFILES, 1);
break;
case 'c':
if (optarg != NULL) {
netsnmp_ds_set_string(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_OPTIONALCONFIG, optarg);
} else {
usage();
goto out;
}
break;
case 'C':
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DONT_READ_CONFIGS, 1);
break;
case 'd':
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DUMP_PACKET, 1);
break;
case 'D':
debug_register_tokens(optarg);
snmp_set_do_debugging(1);
break;
case 'f':
dofork = 0;
break;
case 'F':
if (optarg != NULL) {
if (( strncmp( optarg, "print", 5 ) == 0 ) ||
( strncmp( optarg, "syslog", 6 ) == 0 ) ||
( strncmp( optarg, "execute", 7 ) == 0 )) {
/* New style: "type=format" */
trap1_fmt_str_remember = strdup(optarg);
cp = strchr( trap1_fmt_str_remember, '=' );
if (cp)
*cp = ' ';
} else {
/* Old style: implicitly "print=format" */
trap1_fmt_str_remember = malloc(strlen(optarg) + 7);
sprintf( trap1_fmt_str_remember, "print %s", optarg );
}
} else {
usage();
goto out;
}
break;
#if HAVE_UNISTD_H
case 'g':
if (optarg != NULL) {
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_GROUPID, gid = atoi(optarg));
} else {
usage();
goto out;
}
break;
#endif
case 'h':
usage();
exit_code = 0;
goto out;
case 'H':
init_agent("snmptrapd");
#ifdef USING_NOTIFICATION_LOG_MIB_NOTIFICATION_LOG_MODULE
init_notification_log();
#endif
#ifdef NETSNMP_EMBEDDED_PERL
init_perl();
#endif
init_snmp("snmptrapd");
fprintf(stderr, "Configuration directives understood:\n");
read_config_print_usage(" ");
exit_code = 0;
goto out;
case 'I':
if (optarg != NULL) {
add_to_init_list(optarg);
} else {
usage();
}
break;
case 'S':
fprintf(stderr,
"Warning: -S option has been withdrawn; use -Ls <facility> instead\n");
goto out;
case 'm':
if (optarg != NULL) {
setenv("MIBS", optarg, 1);
} else {
usage();
goto out;
}
break;
case 'M':
if (optarg != NULL) {
setenv("MIBDIRS", optarg, 1);
} else {
usage();
goto out;
}
break;
case 'n':
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_APP_NUMERIC_IP, 1);
break;
case 'o':
fprintf(stderr,
"Warning: -o option has been withdrawn; use -Lf <file> instead\n");
goto out;
case 'O':
cp = snmp_out_toggle_options(optarg);
if (cp != NULL) {
fprintf(stderr, "Unknown output option passed to -O: %c\n",
*cp);
usage();
goto out;
}
break;
case 'L':
if (snmp_log_options( optarg, argc, argv ) < 0 ) {
usage();
goto out;
}
break;
#if HAVE_GETPID
case 'p':
if (optarg != NULL) {
parse_config_pidFile(NULL, optarg);
} else {
usage();
goto out;
}
break;
#endif
case 'P':
fprintf(stderr,
"Warning: -P option has been withdrawn; use -f -Le instead\n");
goto out;
case 's':
fprintf(stderr,
"Warning: -s option has been withdrawn; use -Lsd instead\n");
goto out;
case 't':
SyslogTrap++;
break;
#if HAVE_UNISTD_H
case 'u':
if (optarg != NULL) {
char *ecp;
uid = strtoul(optarg, &ecp, 10);
#if HAVE_GETPWNAM && HAVE_PWD_H
if (*ecp) {
struct passwd *info;
info = getpwnam(optarg);
uid = info ? info->pw_uid : -1;
endpwent();
}
#endif
if (uid < 0) {
fprintf(stderr, "Bad user id: %s\n", optarg);
goto out;
}
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_USERID, uid);
} else {
usage();
goto out;
}
break;
#endif
case 'v':
version();
exit(0);
break;
#if defined(USING_AGENTX_SUBAGENT_MODULE) && !defined(NETSNMP_SNMPTRAPD_DISABLE_AGENTX)
case 'x':
if (optarg != NULL) {
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_X_SOCKET, optarg);
} else {
usage();
goto out;
}
break;
case 'X':
agentx_subagent = 0;
break;
#endif
default:
fprintf(stderr, "invalid option: -%c\n", arg);
usage();
goto out;
break;
}
}
if (optind < argc) {
/*
* There are optional transport addresses on the command line.
*/
for (i = optind; i < argc; i++) {
char *astring;
if (listen_ports != NULL) {
astring = malloc(strlen(listen_ports) + 2 + strlen(argv[i]));
if (astring == NULL) {
fprintf(stderr, "malloc failure processing argv[%d]\n", i);
goto out;
}
sprintf(astring, "%s,%s", listen_ports, argv[i]);
free(listen_ports);
listen_ports = astring;
} else {
listen_ports = strdup(argv[i]);
if (listen_ports == NULL) {
fprintf(stderr, "malloc failure processing argv[%d]\n", i);
goto out;
}
}
}
}
SOCK_STARTUP;
/*
* I'm being lazy here, and not checking the
* return value from these registration calls.
* Don't try this at home, children!
*/
if (0 == snmp_get_do_logging()) {
#ifndef NETSNMP_FEATURE_REMOVE_LOGGING_SYSLOG
traph = netsnmp_add_global_traphandler(NETSNMPTRAPD_PRE_HANDLER,
syslog_handler);
traph->authtypes = TRAP_AUTH_LOG;
snmp_enable_syslog();
#else /* NETSNMP_FEATURE_REMOVE_LOGGING_SYSLOG */
#ifndef NETSNMP_FEATURE_REMOVE_LOGGING_STDIO
traph = netsnmp_add_global_traphandler(NETSNMPTRAPD_PRE_HANDLER,
print_handler);
traph->authtypes = TRAP_AUTH_LOG;
snmp_enable_stderr();
#endif /* NETSNMP_FEATURE_REMOVE_LOGGING_STDIO */
#endif /* NETSNMP_FEATURE_REMOVE_LOGGING_SYSLOG */
} else {
traph = netsnmp_add_global_traphandler(NETSNMPTRAPD_PRE_HANDLER,
print_handler);
traph->authtypes = TRAP_AUTH_LOG;
}
#if defined(USING_AGENTX_SUBAGENT_MODULE) && !defined(NETSNMP_SNMPTRAPD_DISABLE_AGENTX)
/*
* we're an agentx subagent?
*/
if (agentx_subagent) {
/*
* make us a agentx client.
*/
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE, 1);
}
#endif
/*
* don't fail if we can't do agentx (ie, socket not there, or not root)
*/
netsnmp_ds_toggle_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS);
/*
* ignore any warning messages.
*/
netsnmp_ds_toggle_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_CONNECTION_WARNINGS);
/*
* initialize the agent library
*/
init_agent("snmptrapd");
#if defined(USING_AGENTX_SUBAGENT_MODULE) && !defined(NETSNMP_SNMPTRAPD_DISABLE_AGENTX)
#ifdef NETSNMP_FEATURE_CHECKING
netsnmp_feature_require(register_snmpEngine_scalars_context)
#endif /* NETSNMP_FEATURE_CHECKING */
/*
* initialize local modules
*/
if (agentx_subagent) {
#ifdef USING_SNMPV3_SNMPENGINE_MODULE
extern void register_snmpEngine_scalars_context(const char *);
#endif
subagent_init();
#ifdef USING_NOTIFICATION_LOG_MIB_NOTIFICATION_LOG_MODULE
/* register the notification log table */
if (should_init("notificationLogMib")) {
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_NOTIF_LOG_CTX,
"snmptrapd");
traph = netsnmp_add_global_traphandler(NETSNMPTRAPD_POST_HANDLER,
notification_handler);
traph->authtypes = TRAP_AUTH_LOG;
init_notification_log();
}
#endif
#ifdef USING_SNMPV3_SNMPENGINE_MODULE
/*
* register scalars from SNMP-FRAMEWORK-MIB::snmpEngineID group;
* allows engineID probes via the master agent under the
* snmptrapd context
*/
register_snmpEngine_scalars_context("snmptrapd");
#endif
}
#endif /* USING_AGENTX_SUBAGENT_MODULE && !NETSNMP_SNMPTRAPD_DISABLE_AGENTX */
/* register our authorization handler */
init_netsnmp_trapd_auth();
#if defined(USING_AGENTX_SUBAGENT_MODULE) && !defined(NETSNMP_SNMPTRAPD_DISABLE_AGENTX)
if (agentx_subagent) {
#ifdef USING_AGENT_NSVACMACCESSTABLE_MODULE
extern void init_register_nsVacm_context(const char *);
#endif
#ifdef USING_SNMPV3_USMUSER_MODULE
#ifdef NETSNMP_FEATURE_CHECKING
netsnmp_feature_require(init_register_usmUser_context)
#endif /* NETSNMP_FEATURE_CHECKING */
extern void init_register_usmUser_context(const char *);
/* register ourselves as having a USM user database */
init_register_usmUser_context("snmptrapd");
#endif
#ifdef USING_AGENT_NSVACMACCESSTABLE_MODULE
/* register net-snmp vacm extensions */
init_register_nsVacm_context("snmptrapd");
#endif
#ifdef USING_TLSTM_MIB_SNMPTLSTMCERTTOTSNTABLE_MODULE
init_snmpTlstmCertToTSNTable_context("snmptrapd");
#endif
}
#endif
#ifdef NETSNMP_EMBEDDED_PERL
init_perl();
{
/* set the default path to load */
char init_file[SNMP_MAXBUF];
snprintf(init_file, sizeof(init_file) - 1,
"%s/%s", SNMPSHAREPATH, "snmp_perl_trapd.pl");
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_PERL_INIT_FILE,
init_file);
}
#endif
/*
* Initialize the world.
*/
init_snmp("snmptrapd");
#ifdef SIGHUP
signal(SIGHUP, hup_handler);
#endif
if (trap1_fmt_str_remember) {
parse_format( NULL, trap1_fmt_str_remember );
}
if (netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_QUIT_IMMEDIATELY)) {
/*
* just starting up to process specific configuration and then
* shutting down immediately.
*/
netsnmp_running = 0;
}
/*
* if no logging options on command line or in conf files, use syslog
*/
if (0 == snmp_get_do_logging()) {
#ifndef NETSNMP_FEATURE_REMOVE_LOGGING_SYSLOG
#ifdef WIN32
snmp_enable_syslog_ident(app_name_long, Facility);
#else
snmp_enable_syslog_ident(app_name, Facility);
#endif
#endif /* NETSNMP_FEATURE_REMOVE_LOGGING_SYSLOG */
}
if (listen_ports)
cp = listen_ports;
else
cp = default_port;
while (cp != NULL) {
char *sep = strchr(cp, ',');
if (sep != NULL) {
*sep = 0;
}
transport = netsnmp_transport_open_server("snmptrap", cp);
if (transport == NULL) {
snmp_log(LOG_ERR, "couldn't open %s -- errno %d (\"%s\")\n",
cp, errno, strerror(errno));
snmptrapd_close_sessions(sess_list);
goto sock_cleanup;
} else {
ss = snmptrapd_add_session(transport);
if (ss == NULL) {
/*
* Shouldn't happen? We have already opened the transport
* successfully so what could have gone wrong?
*/
snmptrapd_close_sessions(sess_list);
snmp_log(LOG_ERR, "couldn't open snmp - %s", strerror(errno));
goto sock_cleanup;
} else {
ss->next = sess_list;
sess_list = ss;
}
}
/*
* Process next listen address, if there is one.
*/
if (sep != NULL) {
*sep = ',';
cp = sep + 1;
} else {
cp = NULL;
}
}
SNMP_FREE(listen_ports); /* done with them */
#ifdef NETSNMP_USE_MYSQL
if( netsnmp_mysql_init() ) {
fprintf(stderr, "MySQL initialization failed\n");
goto sock_cleanup;
}
#endif
#ifndef WIN32
/*
* fork the process to the background if we are not printing to stderr
*/
if (dofork && netsnmp_running) {
int fd;
#if HAVE_FORKALL
switch (forkall()) {
#else
switch (fork()) {
#endif
case -1:
fprintf(stderr, "bad fork - %s\n", strerror(errno));
goto sock_cleanup;
case 0:
/*
* become process group leader
*/
if (setsid() == -1) {
fprintf(stderr, "bad setsid - %s\n", strerror(errno));
goto sock_cleanup;
}
/*
* if we are forked, we don't want to print out to stdout or stderr
*/
fd = open("/dev/null", O_RDWR);
if (fd >= 0) {
dup2(fd, STDIN_FILENO);
dup2(fd, STDOUT_FILENO);
dup2(fd, STDERR_FILENO);
close(fd);
}
break;
default:
_exit(0);
}
}
#endif /* WIN32 */
#if HAVE_GETPID
if (pid_file != NULL) {
if ((PID = fopen(pid_file, "w")) == NULL) {
snmp_log_perror("fopen");
goto sock_cleanup;
}
fprintf(PID, "%d\n", (int) getpid());
fclose(PID);
free_config_pidFile();
}
#endif
snmp_log(LOG_INFO, "NET-SNMP version %s\n", netsnmp_get_version());
/*
* ignore early sighup during startup
*/
reconfig = 0;
#if HAVE_UNISTD_H
#ifdef HAVE_SETGID
if ((gid = netsnmp_ds_get_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_GROUPID)) > 0) {
DEBUGMSGTL(("snmptrapd/main", "Changing gid to %d.\n", gid));
if (setgid(gid) == -1
#ifdef HAVE_SETGROUPS
|| setgroups(1, (gid_t *)&gid) == -1
#endif
) {
snmp_log_perror("setgid failed");
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
goto sock_cleanup;
}
}
}
#endif
#ifdef HAVE_SETUID
if ((uid = netsnmp_ds_get_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_USERID)) != 0) {
DEBUGMSGTL(("snmptrapd/main", "Changing uid to %d.\n", uid));
if (setuid(uid) == -1) {
snmp_log_perror("setuid failed");
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
goto sock_cleanup;
}
}
}
#endif
#endif
/*
* Let systemd know we're up.
*/
#ifndef NETSNMP_NO_SYSTEMD
netsnmp_sd_notify(1, "READY=1\n");
if (prepared_sockets)
/*
* Clear the environment variable, we already processed all the sockets
* by now.
*/
netsnmp_sd_listen_fds(1);
#endif
#ifdef WIN32SERVICE
trapd_status = SNMPTRAPD_RUNNING;
#endif
snmptrapd_main_loop();
if (snmp_get_do_logging()) {
struct tm *tm;
time_t timer;
time(&timer);
tm = localtime(&timer);
snmp_log(LOG_INFO,
"%.4d-%.2d-%.2d %.2d:%.2d:%.2d NET-SNMP version %s Stopped.\n",
tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, tm->tm_hour,
tm->tm_min, tm->tm_sec, netsnmp_get_version());
}
snmp_log(LOG_INFO, "Stopping snmptrapd\n");
#ifdef NETSNMP_EMBEDDED_PERL
shutdown_perl();
#endif
snmptrapd_close_sessions(sess_list);
snmp_shutdown("snmptrapd");
#ifdef WIN32SERVICE
trapd_status = SNMPTRAPD_STOPPED;
#endif
snmp_disable_log();
exit_code = 0;
sock_cleanup:
SOCK_CLEANUP;
out:
return exit_code;
}
/*
* Read the configuration files. Implemented as a signal handler so that
* receipt of SIGHUP will cause configuration to be re-read when the
* trap daemon is running detatched from the console.
*
*/
void
trapd_update_config(void)
{
free_config();
#ifdef USING_MIBII_VACM_CONF_MODULE
vacm_standard_views(0,0,NULL,NULL);
#endif
read_configs();
}
main(int argc, char *argv[])
#endif
{
char options[128] = "aAc:CdD::fhHI:l:L:m:M:n:p:P:qrsS:UvV-:Y:";
int arg, i, ret;
int dont_fork = 0, do_help = 0;
int log_set = 0;
int agent_mode = -1;
char *pid_file = NULL;
char option_compatability[] = "-Le";
#ifndef WIN32
int prepared_sockets = 0;
#endif
#if HAVE_GETPID
int fd;
FILE *PID;
#endif
#ifndef WIN32
#ifndef NETSNMP_NO_SYSTEMD
/* check if systemd has sockets for us and don't close them */
prepared_sockets = netsnmp_sd_listen_fds(0);
#endif /* NETSNMP_NO_SYSTEMD */
/*
* close all non-standard file descriptors we may have
* inherited from the shell.
*/
if (!prepared_sockets) {
for (i = getdtablesize() - 1; i > 2; --i) {
(void) close(i);
}
}
#endif /* #WIN32 */
/*
* register signals ASAP to prevent default action (usually core)
* for signals during startup...
*/
#ifdef SIGTERM
DEBUGMSGTL(("signal", "registering SIGTERM signal handler\n"));
signal(SIGTERM, SnmpdShutDown);
#endif
#ifdef SIGINT
DEBUGMSGTL(("signal", "registering SIGINT signal handler\n"));
signal(SIGINT, SnmpdShutDown);
#endif
#ifdef SIGHUP
signal(SIGHUP, SIG_IGN); /* do not terminate on early SIGHUP */
#endif
#ifdef SIGUSR1
DEBUGMSGTL(("signal", "registering SIGUSR1 signal handler\n"));
signal(SIGUSR1, SnmpdDump);
#endif
#ifdef SIGPIPE
DEBUGMSGTL(("signal", "registering SIGPIPE signal handler\n"));
signal(SIGPIPE, SIG_IGN); /* 'Inline' failure of wayward readers */
#endif
#ifdef SIGXFSZ
signal(SIGXFSZ, SnmpdCatchRandomSignal);
#endif
#ifdef NETSNMP_NO_ROOT_ACCESS
/*
* Default to no.
*/
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS, 1);
#endif
/*
* Default to NOT running an AgentX master.
*/
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_AGENTX_MASTER, 0);
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_AGENTX_TIMEOUT, -1);
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_AGENTX_RETRIES, -1);
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_CACHE_TIMEOUT, 5);
/*
* Add some options if they are available.
*/
#if HAVE_UNISTD_H
strcat(options, "g:u:");
#endif
#if defined(USING_AGENTX_SUBAGENT_MODULE)|| defined(USING_AGENTX_MASTER_MODULE)
strcat(options, "x:");
#endif
#ifdef USING_AGENTX_SUBAGENT_MODULE
strcat(options, "X");
#endif
/*
* This is incredibly ugly, but it's probably the simplest way
* to handle the old '-L' option as well as the new '-Lx' style
*/
for (i=0; i<argc; i++) {
if (!strcmp(argv[i], "-L"))
argv[i] = option_compatability;
}
#ifndef NETSNMP_FEATURE_REMOVE_LOGGING_SYSLOG
#ifdef WIN32
snmp_log_syslogname(app_name_long);
#else
snmp_log_syslogname(app_name);
#endif
#endif /* NETSNMP_FEATURE_REMOVE_LOGGING_SYSLOG */
netsnmp_ds_set_string(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_APPTYPE, app_name);
/*
* Now process options normally.
*/
while ((arg = getopt(argc, argv, options)) != EOF) {
switch (arg) {
case '-':
if (strcasecmp(optarg, "help") == 0) {
usage(argv[0]);
}
if (strcasecmp(optarg, "version") == 0) {
version();
}
handle_long_opt(optarg);
break;
case 'a':
log_addresses++;
break;
case 'A':
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_APPEND_LOGFILES, 1);
break;
case 'c':
if (optarg != NULL) {
netsnmp_ds_set_string(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_OPTIONALCONFIG, optarg);
} else {
usage(argv[0]);
}
break;
case 'C':
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DONT_READ_CONFIGS, 1);
break;
case 'd':
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DUMP_PACKET,
++snmp_dump_packet);
break;
case 'D':
debug_register_tokens(optarg);
snmp_set_do_debugging(1);
break;
case 'f':
dont_fork = 1;
break;
#if HAVE_UNISTD_H
case 'g':
if (optarg != NULL) {
char *ecp;
int gid;
gid = strtoul(optarg, &ecp, 10);
#if HAVE_GETGRNAM && HAVE_PWD_H
if (*ecp) {
struct group *info;
info = getgrnam(optarg);
gid = info ? info->gr_gid : -1;
endgrent();
}
#endif
if (gid < 0) {
fprintf(stderr, "Bad group id: %s\n", optarg);
exit(1);
}
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_GROUPID, gid);
} else {
usage(argv[0]);
}
break;
#endif
case 'h':
usage(argv[0]);
break;
case 'H':
do_help = 1;
break;
case 'I':
if (optarg != NULL) {
add_to_init_list(optarg);
} else {
usage(argv[0]);
}
break;
#ifndef NETSNMP_FEATURE_REMOVE_LOGGING_FILE
case 'l':
printf("Warning: -l option is deprecated, use -Lf <file> instead\n");
if (optarg != NULL) {
if (strlen(optarg) > PATH_MAX) {
fprintf(stderr,
"%s: logfile path too long (limit %d chars)\n",
argv[0], PATH_MAX);
exit(1);
}
snmp_enable_filelog(optarg,
netsnmp_ds_get_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_APPEND_LOGFILES));
log_set = 1;
} else {
usage(argv[0]);
}
break;
#endif /* NETSNMP_FEATURE_REMOVE_LOGGING_FILE */
case 'L':
if (snmp_log_options( optarg, argc, argv ) < 0 ) {
usage(argv[0]);
}
log_set = 1;
break;
case 'm':
if (optarg != NULL) {
setenv("MIBS", optarg, 1);
} else {
usage(argv[0]);
}
break;
case 'M':
if (optarg != NULL) {
setenv("MIBDIRS", optarg, 1);
} else {
usage(argv[0]);
}
break;
case 'n':
if (optarg != NULL) {
app_name = optarg;
netsnmp_ds_set_string(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_APPTYPE, app_name);
} else {
usage(argv[0]);
}
break;
case 'P':
printf("Warning: -P option is deprecated, use -p instead\n");
case 'p':
if (optarg != NULL) {
pid_file = optarg;
} else {
usage(argv[0]);
}
break;
case 'q':
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_QUICK_PRINT, 1);
break;
case 'r':
netsnmp_ds_toggle_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS);
break;
#ifndef NETSNMP_FEATURE_REMOVE_LOGGING_SYSLOG
case 's':
printf("Warning: -s option is deprecated, use -Lsd instead\n");
snmp_enable_syslog();
log_set = 1;
break;
case 'S':
printf("Warning: -S option is deprecated, use -Ls <facility> instead\n");
if (optarg != NULL) {
switch (*optarg) {
case 'd':
case 'D':
Facility = LOG_DAEMON;
break;
case 'i':
case 'I':
Facility = LOG_INFO;
break;
case '0':
Facility = LOG_LOCAL0;
break;
case '1':
Facility = LOG_LOCAL1;
break;
case '2':
Facility = LOG_LOCAL2;
break;
case '3':
Facility = LOG_LOCAL3;
break;
case '4':
Facility = LOG_LOCAL4;
break;
case '5':
Facility = LOG_LOCAL5;
break;
case '6':
Facility = LOG_LOCAL6;
break;
case '7':
Facility = LOG_LOCAL7;
break;
default:
fprintf(stderr, "invalid syslog facility: -S%c\n",*optarg);
usage(argv[0]);
}
snmp_enable_syslog_ident(snmp_log_syslogname(NULL), Facility);
log_set = 1;
} else {
fprintf(stderr, "no syslog facility specified\n");
usage(argv[0]);
}
break;
#endif /* NETSNMP_FEATURE_REMOVE_LOGGING_SYSLOG */
case 'U':
netsnmp_ds_toggle_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_LEAVE_PIDFILE);
break;
#if HAVE_UNISTD_H
case 'u':
if (optarg != NULL) {
char *ecp;
int uid;
uid = strtoul(optarg, &ecp, 10);
#if HAVE_GETPWNAM && HAVE_PWD_H
if (*ecp) {
struct passwd *info;
info = getpwnam(optarg);
uid = info ? info->pw_uid : -1;
endpwent();
}
#endif
if (uid < 0) {
fprintf(stderr, "Bad user id: %s\n", optarg);
exit(1);
}
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_USERID, uid);
} else {
usage(argv[0]);
}
break;
#endif
case 'v':
version();
case 'V':
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_VERBOSE, 1);
break;
#if defined(USING_AGENTX_SUBAGENT_MODULE)|| defined(USING_AGENTX_MASTER_MODULE)
case 'x':
if (optarg != NULL) {
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_X_SOCKET, optarg);
} else {
usage(argv[0]);
}
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_AGENTX_MASTER, 1);
break;
#endif
case 'X':
#if defined(USING_AGENTX_SUBAGENT_MODULE)
agent_mode = SUB_AGENT;
#else
fprintf(stderr, "%s: Illegal argument -X:"
"AgentX support not compiled in.\n", argv[0]);
usage(argv[0]);
exit(1);
#endif
break;
case 'Y':
netsnmp_config_remember(optarg);
break;
default:
usage(argv[0]);
break;
}
}
if (do_help) {
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS, 1);
init_agent(app_name); /* register our .conf handlers */
init_mib_modules();
init_snmp(app_name);
fprintf(stderr, "Configuration directives understood:\n");
read_config_print_usage(" ");
exit(0);
}
if (optind < argc) {
#ifndef NETSNMP_NO_LISTEN_SUPPORT
/*
* There are optional transport addresses on the command line.
*/
DEBUGMSGTL(("snmpd/main", "optind %d, argc %d\n", optind, argc));
for (i = optind; i < argc; i++) {
char *c, *astring;
if ((c = netsnmp_ds_get_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_PORTS))) {
astring = (char*)malloc(strlen(c) + 2 + strlen(argv[i]));
if (astring == NULL) {
fprintf(stderr, "malloc failure processing argv[%d]\n", i);
exit(1);
}
sprintf(astring, "%s,%s", c, argv[i]);
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_PORTS, astring);
SNMP_FREE(astring);
} else {
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_PORTS, argv[i]);
}
}
DEBUGMSGTL(("snmpd/main", "port spec: %s\n",
netsnmp_ds_get_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_PORTS)));
#else /* NETSNMP_NO_LISTEN_SUPPORT */
fprintf(stderr, "You specified ports to open; this agent was built to only send notifications\n");
exit(1);
#endif /* NETSNMP_NO_LISTEN_SUPPORT */
}
#ifdef NETSNMP_LOGFILE
#ifndef NETSNMP_FEATURE_REMOVE_LOGGING_FILE
if (0 == log_set)
snmp_enable_filelog(NETSNMP_LOGFILE,
netsnmp_ds_get_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_APPEND_LOGFILES));
#endif /* NETSNMP_FEATURE_REMOVE_LOGGING_FILE */
#endif
#ifdef USING_UTIL_FUNCS_RESTART_MODULE
{
/*
* Initialize a argv set to the current for restarting the agent.
*/
char *cptr, **argvptr;
argvrestartp = (char **)malloc((argc + 2) * sizeof(char *));
argvptr = argvrestartp;
for (i = 0, ret = 1; i < argc; i++) {
ret += strlen(argv[i]) + 1;
}
argvrestart = (char *) malloc(ret);
argvrestartname = (char *) malloc(strlen(argv[0]) + 1);
if (!argvrestartp || !argvrestart || !argvrestartname) {
fprintf(stderr, "malloc failure processing argvrestart\n");
exit(1);
}
strcpy(argvrestartname, argv[0]);
for (cptr = argvrestart, i = 0; i < argc; i++) {
strcpy(cptr, argv[i]);
*(argvptr++) = cptr;
cptr += strlen(argv[i]) + 1;
}
}
#endif /* USING_UTIL_FUNCS_RESTART_MODULE */
if (agent_mode == -1) {
if (strstr(argv[0], "agentxd") != NULL) {
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE, SUB_AGENT);
} else {
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE, MASTER_AGENT);
}
} else {
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE, agent_mode);
}
SOCK_STARTUP;
if (init_agent(app_name) != 0) {
snmp_log(LOG_ERR, "Agent initialization failed\n");
exit(1);
}
init_mib_modules();
/*
* start library
*/
init_snmp(app_name);
if ((ret = init_master_agent()) != 0) {
/*
* Some error opening one of the specified agent transports.
*/
snmp_log(LOG_ERR, "Server Exiting with code 1\n");
exit(1);
}
/*
* Initialize the world. Detach from the shell. Create initial user.
*/
if(!dont_fork) {
int quit = ! netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_QUIT_IMMEDIATELY);
ret = netsnmp_daemonize(quit,
#ifndef NETSNMP_FEATURE_REMOVE_LOGGING_STDIO
snmp_stderrlog_status()
#else /* NETSNMP_FEATURE_REMOVE_LOGGING_STDIO */
0
#endif /* NETSNMP_FEATURE_REMOVE_LOGGING_STDIO */
);
/*
* xxx-rks: do we care if fork fails? I think we should...
*/
if(ret != 0) {
snmp_log(LOG_ERR, "Server Exiting with code 1\n");
exit(1);
}
}
#if HAVE_GETPID
if (pid_file != NULL) {
/*
* unlink the pid_file, if it exists, prior to open. Without
* doing this the open will fail if the user specified pid_file
* already exists.
*/
unlink(pid_file);
fd = open(pid_file, O_CREAT | O_EXCL | O_WRONLY, 0600);
if (fd == -1) {
snmp_log_perror(pid_file);
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
exit(1);
}
} else {
if ((PID = fdopen(fd, "w")) == NULL) {
snmp_log_perror(pid_file);
exit(1);
} else {
fprintf(PID, "%d\n", (int) getpid());
fclose(PID);
}
#ifndef _MSC_VER
/* The sequence open()/fdopen()/fclose()/close() makes MSVC crash,
hence skip the close() call when using the MSVC runtime. */
close(fd);
#endif
}
}
#endif
#if defined(HAVE_UNISTD_H) && (defined(HAVE_CHOWN) || defined(HAVE_SETGID) || defined(HAVE_SETUID))
{
const char *persistent_dir;
int uid, gid;
persistent_dir = get_persistent_directory();
mkdirhier( persistent_dir, NETSNMP_AGENT_DIRECTORY_MODE, 0 );
uid = netsnmp_ds_get_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_USERID);
gid = netsnmp_ds_get_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_GROUPID);
#ifdef HAVE_CHOWN
if ( uid != 0 || gid != 0 )
chown( persistent_dir, uid, gid );
#endif
#ifdef HAVE_SETGID
if ((gid = netsnmp_ds_get_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_GROUPID)) > 0) {
DEBUGMSGTL(("snmpd/main", "Changing gid to %d.\n", gid));
if (setgid(gid) == -1
#ifdef HAVE_SETGROUPS
|| setgroups(1, (gid_t *)&gid) == -1
#endif
) {
snmp_log_perror("setgid failed");
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
exit(1);
}
}
}
#endif
#ifdef HAVE_SETUID
if ((uid = netsnmp_ds_get_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_USERID)) > 0) {
#if HAVE_GETPWNAM && HAVE_PWD_H && HAVE_INITGROUPS
struct passwd *info;
/*
* Set supplementary groups before changing UID
* (which probably involves giving up privileges)
*/
info = getpwuid(uid);
if (info) {
DEBUGMSGTL(("snmpd/main", "Supplementary groups for %s.\n", info->pw_name));
if (initgroups(info->pw_name, (gid != 0 ? (gid_t)gid : info->pw_gid)) == -1) {
snmp_log_perror("initgroups failed");
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
exit(1);
}
}
}
endpwent();
#endif
DEBUGMSGTL(("snmpd/main", "Changing uid to %d.\n", uid));
if (setuid(uid) == -1) {
snmp_log_perror("setuid failed");
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
exit(1);
}
}
}
#endif
}
#endif
/*
* Store persistent data immediately in case we crash later.
*/
snmp_store(app_name);
#ifdef SIGHUP
DEBUGMSGTL(("signal", "registering SIGHUP signal handler\n"));
signal(SIGHUP, SnmpdReconfig);
#endif
/*
* Send coldstart trap if possible.
*/
send_easy_trap(0, 0);
/*
* We're up, log our version number.
*/
snmp_log(LOG_INFO, "NET-SNMP version %s\n", netsnmp_get_version());
#ifdef WIN32SERVICE
agent_status = AGENT_RUNNING;
#endif
netsnmp_addrcache_initialise();
/*
* Let systemd know we're up.
*/
#ifndef NETSNMP_NO_SYSTEMD
netsnmp_sd_notify(1, "READY=1\n");
if (prepared_sockets)
/*
* Clear the environment variable, we already processed all the sockets
* by now.
*/
netsnmp_sd_listen_fds(1);
#endif
/*
* Forever monitor the dest_port for incoming PDUs.
*/
DEBUGMSGTL(("snmpd/main", "We're up. Starting to process data.\n"));
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_QUIT_IMMEDIATELY))
receive();
DEBUGMSGTL(("snmpd/main", "sending shutdown trap\n"));
SnmpTrapNodeDown();
DEBUGMSGTL(("snmpd/main", "Bye...\n"));
snmp_shutdown(app_name);
shutdown_master_agent();
shutdown_agent();
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_LEAVE_PIDFILE) &&
(pid_file != NULL)) {
unlink(pid_file);
}
#ifdef WIN32SERVICE
agent_status = AGENT_STOPPED;
#endif
#ifdef USING_UTIL_FUNCS_RESTART_MODULE
SNMP_FREE(argvrestartname);
SNMP_FREE(argvrestart);
SNMP_FREE(argvrestartp);
#endif /* USING_UTIL_FUNCS_RESTART_MODULE */
SOCK_CLEANUP;
return 0;
} /* End main() -- snmpd */
/**
* 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() */
netsnmp_session *mp_snmp_init(void) {
netsnmp_session session, *ss;
int status;
init_snmp(progname);
snmp_sess_init( &session );
if (mp_snmp_community == NULL)
mp_snmp_community = mp_strdup("public");
mp_asprintf(&(session.peername), "%s:%d", hostname, port);
switch(mp_snmp_version) {
case SNMP_VERSION_1:
session.version = SNMP_VERSION_1;
session.community = (u_char *)mp_snmp_community;
session.community_len = strlen((char *)session.community);
break;
case SNMP_VERSION_2c:
session.version = SNMP_VERSION_2c;
session.community = (u_char *)mp_snmp_community;
session.community_len = strlen((char *)session.community);
break;
case SNMP_VERSION_3:
session.version = SNMP_VERSION_3;
session.securityName = mp_strdup(mp_snmp_secname);
session.securityNameLen = strlen(session.securityName);
/* set the security level */
session.securityLevel = mp_snmp_seclevel;
session.contextName = mp_strdup(mp_snmp_context);
session.contextNameLen = strlen(session.contextName);
/* set the authentication method */
session.securityAuthProto = mp_snmp_authproto;
session.securityAuthProtoLen = 10;
session.securityAuthKeyLen = USM_AUTH_KU_LEN;
status = generate_Ku(session.securityAuthProto,
session.securityAuthProtoLen,
(u_char *) mp_snmp_authpass, strlen(mp_snmp_authpass),
session.securityAuthKey,
&session.securityAuthKeyLen);
if (status != SNMPERR_SUCCESS) {
snmp_perror(progname);
snmp_log(LOG_ERR,
"Error generating Ku from authentication pass phrase. \n%s\n",snmp_api_errstring(status));
exit(1);
}
break;
}
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DONT_PERSIST_STATE, 1);
SOCK_STARTUP;
ss = snmp_open(&session);
if (!ss) {
snmp_sess_perror("ack", &session);
SOCK_CLEANUP;
exit(1);
}
free(session.peername);
if (mp_snmp_retries > 0)
ss->retries = mp_snmp_retries;
if (mp_snmp_timeout > 0)
ss->timeout = (long)(mp_snmp_timeout * 1000000L);
return ss;
}
int
main (int argc, char **argv) {
int agentx_subagent = 1; // change this if you want to be a SNMP master agent
int background = 0; // change this if you want to run in the background
int syslog = 0; // change this if you want to use syslog
const char *conninfo; // connection string (in libpq format)
/* print log errors to syslog or stderr */
if (syslog)
snmp_enable_calllog();
else
snmp_enable_stderrlog();
/* we're an agentx subagent? */
if (agentx_subagent) {
/* make us a agentx client. */
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_AGENT_ROLE, 1);
}
/* run in background, if requested */
if (background && netsnmp_daemonize(1, !syslog))
exit(1);
/* initialize tcpip, if necessary */
SOCK_STARTUP;
/* initialize the agent library */
init_agent("pgstatmibd");
/* initialize mib code here */
/*
* If the user supplies a parameter on the command line, use it as the
* conninfo string; otherwise default to setting dbname=postgres and using
* environment variables or defaults for all other connection parameters.
*/
if (argc > 1)
conninfo = argv[1];
else
conninfo = "dbname=postgres user=postgres";
/* Make a connection to the database */
dbconn = PQconnectdb(conninfo);
/* Check to see that the backend connection was successfully made */
if (PQstatus(dbconn) != CONNECTION_OK)
{
//printf("Connection to database failed: %s",
// PQerrorMessage(dbconn));
snmp_log(LOG_ERR, "Connection to database failed: %s",
PQerrorMessage(dbconn));
//exit_nicely(conn);
}
/* mib code */
init_pgstatServer();
init_pgstatDatabaseTable();
init_pgstatBgWriter();
/* initialize vacm/usm access control */
/*if (!agentx_subagent) {
init_vacm_vars();
init_usmUser();
}*/
/* pgstatmibd will be used to read pgstatmibd.conf files. */
init_snmp("pgstatmibd");
/* If we're going to be a snmp master agent, initial the ports */
if (!agentx_subagent)
init_master_agent(); /* open the port to listen on (defaults to udp:161) */
/* In case we recevie a request to stop (kill -TERM or kill -INT) */
keep_running = 1;
signal(SIGTERM, stop_server);
signal(SIGINT, stop_server);
snmp_log(LOG_INFO, "pgstatmibd is up and running.\n");
/* your main loop here... */
while (keep_running) {
/* if you use select(), see snmp_select_info() in snmp_api(3) */
/* --- OR --- */
agent_check_and_process(1); /* 0 == don't block */
}
/* close the connection to the database and cleanup */
PQfinish(dbconn);
/* at shutdown time */
snmp_shutdown("pgstatmibd");
SOCK_CLEANUP;
return 0;
}
main(int argc, char *argv[])
#endif
{
char options[128] = "aAc:CdD::efF:g:hHI:L:m:M:no:O:PqsS:tu:vx:-:";
netsnmp_session *sess_list = NULL, *ss = NULL;
netsnmp_transport *transport = NULL;
int arg, i = 0, depmsg = 0;
int uid = 0, gid = 0;
int count, numfds, block;
fd_set readfds,writefds,exceptfds;
struct timeval timeout, *tvp;
char *cp, *listen_ports = NULL;
#if defined(USING_AGENTX_SUBAGENT_MODULE) && !defined(NETSNMP_SNMPTRAPD_DISABLE_AGENTX)
int agentx_subagent = 1;
#endif
netsnmp_trapd_handler *traph;
#ifdef NETSNMP_EMBEDDED_PERL
extern void init_perl(void);
#endif
#ifndef WIN32
/*
* close all non-standard file descriptors we may have
* inherited from the shell.
*/
for (i = getdtablesize() - 1; i > 2; --i) {
(void) close(i);
}
#endif /* #WIN32 */
#ifdef SIGTERM
signal(SIGTERM, term_handler);
#endif
#ifdef SIGHUP
signal(SIGHUP, SIG_IGN); /* do not terminate on early SIGHUP */
#endif
#ifdef SIGINT
signal(SIGINT, term_handler);
#endif
#ifdef SIGPIPE
signal(SIGPIPE, SIG_IGN); /* 'Inline' failure of wayward readers */
#endif
#ifdef SIGHUP
signal(SIGHUP, SIG_IGN); /* do not terminate on early SIGHUP */
#endif
/*
* register our configuration handlers now so -H properly displays them
*/
snmptrapd_register_configs( );
init_usm_conf( "snmptrapd" );
register_config_handler("snmptrapd", "snmpTrapdAddr",
parse_trapd_address, free_trapd_address, "string");
register_config_handler("snmptrapd", "doNotLogTraps",
parse_config_doNotLogTraps, NULL, "(1|yes|true|0|no|false)");
#if HAVE_GETPID
register_config_handler("snmptrapd", "pidFile",
parse_config_pidFile, NULL, "string");
#endif
#ifdef HAVE_UNISTD_H
register_config_handler("snmptrapd", "agentuser",
parse_config_agentuser, NULL, "userid");
register_config_handler("snmptrapd", "agentgroup",
parse_config_agentgroup, NULL, "groupid");
#endif
register_config_handler("snmptrapd", "logOption",
parse_config_logOption, NULL, "string");
register_config_handler("snmptrapd", "doNotFork",
parse_config_doNotFork, NULL, "(1|yes|true|0|no|false)");
register_config_handler("snmptrapd", "printEventNumbers",
parse_config_printEventNumbers, NULL, "(1|yes|true|0|no|false)");
register_config_handler("snmptrapd", "ignoreAuthFailure",
parse_config_ignoreAuthFailure, NULL, "(1|yes|true|0|no|false)");
register_config_handler("snmptrapd", "outputOption",
parse_config_outputOption, NULL, "string");
#ifdef WIN32
setvbuf(stdout, NULL, _IONBF, BUFSIZ);
#else
setvbuf(stdout, NULL, _IOLBF, BUFSIZ);
#endif
/*
* Add some options if they are available.
*/
#if HAVE_GETPID
strcat(options, "p:");
#endif
#ifdef WIN32
snmp_log_syslogname(app_name_long);
#else
snmp_log_syslogname(app_name);
#endif
/*
* Now process options normally.
*/
while ((arg = getopt(argc, argv, options)) != EOF) {
switch (arg) {
case '-':
if (strcasecmp(optarg, "help") == 0) {
usage();
exit(0);
}
if (strcasecmp(optarg, "version") == 0) {
version();
exit(0);
}
handle_long_opt(optarg);
break;
case 'a':
dropauth = 1;
break;
case 'A':
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_APPEND_LOGFILES, 1);
break;
case 'c':
if (optarg != NULL) {
netsnmp_ds_set_string(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_OPTIONALCONFIG, optarg);
} else {
usage();
exit(1);
}
break;
case 'C':
netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DONT_READ_CONFIGS, 1);
break;
case 'd':
snmp_set_dump_packet(1);
break;
case 'D':
debug_register_tokens(optarg);
snmp_set_do_debugging(1);
break;
case 'e':
Event++;
break;
case 'f':
dofork = 0;
break;
case 'F':
if (optarg != NULL) {
trap1_fmt_str_remember = optarg;
} else {
usage();
exit(1);
}
break;
#if HAVE_UNISTD_H
case 'g':
if (optarg != NULL) {
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_GROUPID, gid = atoi(optarg));
} else {
usage();
exit(1);
}
break;
#endif
case 'h':
usage();
exit(0);
case 'H':
init_agent("snmptrapd");
#ifdef USING_NOTIFICATION_LOG_MIB_NOTIFICATION_LOG_MODULE
init_notification_log();
#endif
#ifdef NETSNMP_EMBEDDED_PERL
init_perl();
#endif
init_snmp("snmptrapd");
fprintf(stderr, "Configuration directives understood:\n");
read_config_print_usage(" ");
exit(0);
case 'I':
if (optarg != NULL) {
add_to_init_list(optarg);
} else {
usage();
}
break;
case 'S':
fprintf(stderr,
"Warning: -S option is deprecated; use -Ls <facility> instead\n");
depmsg = 1;
if (optarg != NULL) {
switch (*optarg) {
case 'd':
case 'D':
Facility = LOG_DAEMON;
break;
case 'i':
case 'I':
Facility = LOG_INFO;
break;
case '0':
Facility = LOG_LOCAL0;
break;
case '1':
Facility = LOG_LOCAL1;
break;
case '2':
Facility = LOG_LOCAL2;
break;
case '3':
Facility = LOG_LOCAL3;
break;
case '4':
Facility = LOG_LOCAL4;
break;
case '5':
Facility = LOG_LOCAL5;
break;
case '6':
Facility = LOG_LOCAL6;
break;
case '7':
Facility = LOG_LOCAL7;
break;
default:
fprintf(stderr, "invalid syslog facility: -S%c\n",*optarg);
usage();
exit(1);
}
} else {
fprintf(stderr, "no syslog facility specified\n");
usage();
exit(1);
}
break;
case 'm':
if (optarg != NULL) {
setenv("MIBS", optarg, 1);
} else {
usage();
exit(1);
}
break;
case 'M':
if (optarg != NULL) {
setenv("MIBDIRS", optarg, 1);
} else {
usage();
exit(1);
}
break;
case 'n':
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_APP_NUMERIC_IP, 1);
break;
case 'o':
fprintf(stderr,
"Warning: -o option is deprecated; use -Lf <file> instead\n");
if (optarg != NULL) {
logfile = optarg;
snmp_enable_filelog(optarg,
netsnmp_ds_get_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_APPEND_LOGFILES));
} else {
usage();
exit(1);
}
break;
case 'O':
cp = snmp_out_toggle_options(optarg);
if (cp != NULL) {
fprintf(stderr, "Unknown output option passed to -O: %c\n",
*cp);
usage();
exit(1);
}
break;
case 'L':
if (snmp_log_options( optarg, argc, argv ) < 0 ) {
usage();
exit(1);
}
break;
#if HAVE_GETPID
case 'p':
if (optarg != NULL) {
parse_config_pidFile(NULL, optarg);
} else {
usage();
exit(1);
}
break;
#endif
case 'P':
fprintf(stderr,
"Warning: -P option is deprecated; use -f -Le instead\n");
dofork = 0;
snmp_enable_stderrlog();
break;
case 's':
fprintf(stderr,
"Warning: -s option is deprecated; use -Lsd instead\n");
depmsg = 1;
#ifdef WIN32
snmp_enable_syslog_ident(app_name_long, Facility);
#else
snmp_enable_syslog_ident(app_name, Facility);
#endif
break;
case 't':
SyslogTrap++;
break;
#if HAVE_UNISTD_H
case 'u':
if (optarg != NULL) {
char *ecp;
uid = strtoul(optarg, &ecp, 10);
if (*ecp) {
#if HAVE_GETPWNAM && HAVE_PWD_H
struct passwd *info;
info = getpwnam(optarg);
if (info) {
uid = info->pw_uid;
} else {
#endif
fprintf(stderr, "Bad user id: %s\n", optarg);
exit(1);
#if HAVE_GETPWNAM && HAVE_PWD_H
}
#endif
}
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_USERID, uid);
} else {
usage();
exit(1);
}
break;
#endif
case 'v':
version();
exit(0);
break;
case 'x':
if (optarg != NULL) {
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_X_SOCKET, optarg);
} else {
usage();
exit(1);
}
break;
default:
fprintf(stderr, "invalid option: -%c\n", arg);
usage();
exit(1);
break;
}
}
if (optind < argc) {
/*
* There are optional transport addresses on the command line.
*/
for (i = optind; i < argc; i++) {
char *astring;
if (listen_ports != NULL) {
astring = malloc(strlen(listen_ports) + 2 + strlen(argv[i]));
if (astring == NULL) {
fprintf(stderr, "malloc failure processing argv[%d]\n", i);
exit(1);
}
sprintf(astring, "%s,%s", listen_ports, argv[i]);
free(listen_ports);
listen_ports = astring;
} else {
listen_ports = strdup(argv[i]);
if (listen_ports == NULL) {
fprintf(stderr, "malloc failure processing argv[%d]\n", i);
exit(1);
}
}
}
}
SOCK_STARTUP;
/*
* I'm being lazy here, and not checking the
* return value from these registration calls.
* Don't try this at home, children!
*/
if (0 == snmp_get_do_logging()) {
traph = netsnmp_add_global_traphandler(NETSNMPTRAPD_PRE_HANDLER,
syslog_handler);
traph->authtypes = TRAP_AUTH_LOG;
snmp_enable_syslog();
} else {
traph = netsnmp_add_global_traphandler(NETSNMPTRAPD_PRE_HANDLER,
print_handler);
traph->authtypes = TRAP_AUTH_LOG;
}
if (Event) {
traph = netsnmp_add_traphandler(event_handler, risingAlarm,
OID_LENGTH(risingAlarm));
traph->authtypes = TRAP_AUTH_LOG;
traph = netsnmp_add_traphandler(event_handler, fallingAlarm,
OID_LENGTH(fallingAlarm));
traph->authtypes = TRAP_AUTH_LOG;
traph = netsnmp_add_traphandler(event_handler, unavailableAlarm,
OID_LENGTH(unavailableAlarm));
traph->authtypes = TRAP_AUTH_LOG;
/* XXX - might be worth setting some "magic data"
* in the traphandler structure that 'event_handler'
* can use to avoid checking the trap OID values.
*/
}
#if defined(USING_AGENTX_SUBAGENT_MODULE) && !defined(NETSNMP_SNMPTRAPD_DISABLE_AGENTX)
/*
* we're an agentx subagent?
*/
if (agentx_subagent) {
/*
* make us a agentx client.
*/
netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_ROLE, 1);
}
#endif
/*
* don't fail if we can't do agentx (ie, socket not there, or not root)
*/
netsnmp_ds_toggle_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS);
/*
* ignore any warning messages.
*/
netsnmp_ds_toggle_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_CONNECTION_WARNINGS);
/*
* initialize the agent library
*/
init_agent("snmptrapd");
#if defined(USING_AGENTX_SUBAGENT_MODULE) && !defined(NETSNMP_SNMPTRAPD_DISABLE_AGENTX)
/*
* initialize local modules
*/
if (agentx_subagent) {
#ifdef USING_SNMPV3_SNMPENGINE_MODULE
extern void register_snmpEngine_scalars_context(const char *);
#endif
subagent_init();
#ifdef USING_NOTIFICATION_LOG_MIB_NOTIFICATION_LOG_MODULE
/* register the notification log table */
if (should_init("notificationLogMib")) {
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_NOTIF_LOG_CTX,
"snmptrapd");
traph = netsnmp_add_global_traphandler(NETSNMPTRAPD_POST_HANDLER,
notification_handler);
traph->authtypes = TRAP_AUTH_LOG;
init_notification_log();
}
#endif
#ifdef USING_SNMPV3_SNMPENGINE_MODULE
/*
* register scalars from SNMP-FRAMEWORK-MIB::snmpEngineID group;
* allows engineID probes via the master agent under the
* snmptrapd context
*/
register_snmpEngine_scalars_context("snmptrapd");
#endif
}
#endif /* USING_AGENTX_SUBAGENT_MODULE && !NETSNMP_SNMPTRAPD_DISABLE_AGENTX */
/* register our authorization handler */
init_netsnmp_trapd_auth();
#if defined(USING_AGENTX_SUBAGENT_MODULE) && !defined(NETSNMP_SNMPTRAPD_DISABLE_AGENTX)
if (agentx_subagent) {
#ifdef USING_AGENT_NSVACMACCESSTABLE_MODULE
extern void init_register_nsVacm_context(const char *);
#endif
#ifdef USING_SNMPV3_USMUSER_MODULE
extern void init_register_usmUser_context(const char *);
/* register ourselves as having a USM user database */
init_register_usmUser_context("snmptrapd");
#endif
#ifdef USING_AGENT_NSVACMACCESSTABLE_MODULE
/* register net-snmp vacm extensions */
init_register_nsVacm_context("snmptrapd");
#endif
}
#endif
#ifdef NETSNMP_EMBEDDED_PERL
init_perl();
{
/* set the default path to load */
char init_file[SNMP_MAXBUF];
snprintf(init_file, sizeof(init_file) - 1,
"%s/%s", SNMPSHAREPATH, "snmp_perl_trapd.pl");
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_PERL_INIT_FILE,
init_file);
}
#endif
/*
* Initialize the world.
*/
init_snmp("snmptrapd");
#ifdef SIGHUP
signal(SIGHUP, hup_handler);
#endif
if (trap1_fmt_str_remember) {
free_trap1_fmt();
free_trap2_fmt();
print_format1 = strdup(trap1_fmt_str_remember);
print_format2 = strdup(trap1_fmt_str_remember);
}
if (netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_QUIT_IMMEDIATELY)) {
/*
* just starting up to process specific configuration and then
* shutting down immediately.
*/
netsnmp_running = 0;
}
/*
* if no logging options on command line or in conf files, use syslog
*/
if (0 == snmp_get_do_logging()) {
#ifdef WIN32
snmp_enable_syslog_ident(app_name_long, Facility);
#else
snmp_enable_syslog_ident(app_name, Facility);
#endif
}
#ifndef WIN32
/*
* fork the process to the background if we are not printing to stderr
*/
if (dofork && netsnmp_running) {
int fd;
switch (fork()) {
case -1:
fprintf(stderr, "bad fork - %s\n", strerror(errno));
_exit(1);
case 0:
/*
* become process group leader
*/
if (setsid() == -1) {
fprintf(stderr, "bad setsid - %s\n", strerror(errno));
_exit(1);
}
/*
* if we are forked, we don't want to print out to stdout or stderr
*/
fd = open("/dev/null", O_RDWR);
dup2(fd, STDIN_FILENO);
dup2(fd, STDOUT_FILENO);
dup2(fd, STDERR_FILENO);
close(fd);
break;
default:
_exit(0);
}
}
#endif /* WIN32 */
#if HAVE_GETPID
if (pid_file != NULL) {
if ((PID = fopen(pid_file, "w")) == NULL) {
snmp_log_perror("fopen");
exit(1);
}
fprintf(PID, "%d\n", (int) getpid());
fclose(PID);
free_config_pidFile();
}
#endif
snmp_log(LOG_INFO, "NET-SNMP version %s\n", netsnmp_get_version());
if (depmsg) {
snmp_log(LOG_WARNING, "-s and -S options are deprecated; use -Ls <facility> instead\n");
}
if (listen_ports)
cp = listen_ports;
else
cp = default_port;
while (cp != NULL) {
char *sep = strchr(cp, ',');
if (sep != NULL) {
*sep = 0;
}
transport = netsnmp_transport_open_server("snmptrap", cp);
if (transport == NULL) {
snmp_log(LOG_ERR, "couldn't open %s -- errno %d (\"%s\")\n",
cp, errno, strerror(errno));
snmptrapd_close_sessions(sess_list);
SOCK_CLEANUP;
exit(1);
} else {
ss = snmptrapd_add_session(transport);
if (ss == NULL) {
/*
* Shouldn't happen? We have already opened the transport
* successfully so what could have gone wrong?
*/
snmptrapd_close_sessions(sess_list);
netsnmp_transport_free(transport);
snmp_log(LOG_ERR, "couldn't open snmp - %s", strerror(errno));
SOCK_CLEANUP;
exit(1);
} else {
ss->next = sess_list;
sess_list = ss;
}
}
/*
* Process next listen address, if there is one.
*/
if (sep != NULL) {
*sep = ',';
cp = sep + 1;
} else {
cp = NULL;
}
}
/*
* ignore early sighup during startup
*/
reconfig = 0;
#if HAVE_UNISTD_H
#ifdef HAVE_SETGID
if ((gid = netsnmp_ds_get_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_GROUPID)) != 0) {
DEBUGMSGTL(("snmptrapd/main", "Changing gid to %d.\n", gid));
if (setgid(gid) == -1
#ifdef HAVE_SETGROUPS
|| setgroups(1, (gid_t *)&gid) == -1
#endif
) {
snmp_log_perror("setgid failed");
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
exit(1);
}
}
}
#endif
#ifdef HAVE_SETUID
if ((uid = netsnmp_ds_get_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_USERID)) != 0) {
DEBUGMSGTL(("snmptrapd/main", "Changing uid to %d.\n", uid));
if (setuid(uid) == -1) {
snmp_log_perror("setuid failed");
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_NO_ROOT_ACCESS)) {
exit(1);
}
}
}
#endif
#endif
#ifdef WIN32SERVICE
trapd_status = SNMPTRAPD_RUNNING;
#endif
while (netsnmp_running) {
if (reconfig) {
/*
* If we are logging to a file, receipt of SIGHUP also
* indicates the the log file should be closed and
* re-opened. This is useful for users that want to
* rotate logs in a more predictable manner.
*/
netsnmp_logging_restart();
snmp_log(LOG_INFO, "NET-SNMP version %s restarted\n",
netsnmp_get_version());
trapd_update_config();
if (trap1_fmt_str_remember) {
free_trap1_fmt();
free_trap2_fmt();
print_format1 = strdup(trap1_fmt_str_remember);
print_format2 = strdup(trap1_fmt_str_remember);
}
reconfig = 0;
}
numfds = 0;
FD_ZERO(&readfds);
FD_ZERO(&writefds);
FD_ZERO(&exceptfds);
block = 0;
tvp = &timeout;
timerclear(tvp);
tvp->tv_sec = 5;
snmp_select_info(&numfds, &readfds, tvp, &block);
if (block == 1)
tvp = NULL; /* block without timeout */
netsnmp_external_event_info(&numfds, &readfds, &writefds, &exceptfds);
count = select(numfds, &readfds, &writefds, &exceptfds, tvp);
gettimeofday(&Now, 0);
if (count > 0) {
netsnmp_dispatch_external_events(&count, &readfds, &writefds,
&exceptfds);
/* If there are any more events after external events, then
* try SNMP events. */
if (count > 0) {
snmp_read(&readfds);
}
} else
switch (count) {
case 0:
snmp_timeout();
break;
case -1:
if (errno == EINTR)
continue;
snmp_log_perror("select");
netsnmp_running = 0;
break;
default:
fprintf(stderr, "select returned %d\n", count);
netsnmp_running = 0;
}
run_alarms();
}
if (snmp_get_do_logging()) {
struct tm *tm;
time_t timer;
time(&timer);
tm = localtime(&timer);
snmp_log(LOG_INFO,
"%.4d-%.2d-%.2d %.2d:%.2d:%.2d NET-SNMP version %s Stopped.\n",
tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, tm->tm_hour,
tm->tm_min, tm->tm_sec, netsnmp_get_version());
}
snmp_log(LOG_INFO, "Stopping snmptrapd");
snmptrapd_close_sessions(sess_list);
snmp_shutdown("snmptrapd");
#ifdef WIN32SERVICE
trapd_status = SNMPTRAPD_STOPPED;
#endif
snmp_disable_log();
SOCK_CLEANUP;
return 0;
}
static void
initialize_internal(void) {
lagopus_result_t ret = LAGOPUS_RESULT_ANY_FAILURES;
void *logger_client_arg = NULL;
char *master_agentx_socket = NULL;
char *ping_interval_string = NULL;
uint16_t ping_interval = 0;
state = SNMPMGR_NONE;
/* `is_thread` is able to be changed only once here */
is_thread = is_thread_dummy;
if (is_thread == false && thdptr_dummy != NULL) {
*thdptr_dummy = NULL;
} else if (thdptr_dummy != NULL) {
*thdptr_dummy = &snmpmgr;
} else {
/* never reached! */
return;
}
if (lagopus_mutex_create(&snmp_lock) != LAGOPUS_RESULT_OK) {
return;
}
if (lagopus_mutex_create(&snmp_state_lock) != LAGOPUS_RESULT_OK) {
return;
}
snmp_set_do_debugging(false);
/* setup Net-SNMP logger to use the lagopus logging function */
if (snmp_register_callback(SNMP_CALLBACK_LIBRARY,
SNMP_CALLBACK_LOGGING,
snmp_log_callback_wrapper,
logger_client_arg) != SNMPERR_SUCCESS) {
return;
}
snmp_enable_calllog();
/* setup the SNMP module to be Agentx subagent */
netsnmp_enable_subagent();
#ifdef THE_CONFSYS_ERA
master_agentx_socket = config_get("snmp master-agentx-socket WORD");
if (master_agentx_socket == NULL) {
config_set_default("snmp master-agentx-socket WORD",
(char *)DEFAULT_SNMPMGR_AGENTX_SOCKET);
master_agentx_socket = config_get("snmp master-agentx-socket WORD");
}
#else
/*
* FIXME:
* Fetch it from the datastore.
*/
master_agentx_socket = (char *)DEFAULT_SNMPMGR_AGENTX_SOCKET;
#endif /* THE_CONFSYS_ERA */
lagopus_msg_debug(25, "master agentx socket is %s\n", master_agentx_socket);
if (netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_X_SOCKET,
master_agentx_socket)
!= SNMPERR_SUCCESS) {
initialize_ret = LAGOPUS_RESULT_SNMP_API_ERROR;
return;
}
/* don't read/write configuration files */
if (netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DONT_PERSIST_STATE,
true) != SNMPERR_SUCCESS) {
initialize_ret = LAGOPUS_RESULT_SNMP_API_ERROR;
return;
}
if (netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DISABLE_PERSISTENT_LOAD,
true) != SNMPERR_SUCCESS) {
initialize_ret = LAGOPUS_RESULT_SNMP_API_ERROR;
return;
}
/* the interval [sec] to send ping to AgentX master agent */
#ifdef THE_CONFSYS_ERA
ping_interval_string = config_get("snmp ping-interval-second 1-255");
if (ping_interval_string != NULL &&
(ret = check_ping_interval(ping_interval_string, &ping_interval))
!= LAGOPUS_RESULT_OK) {
config_set_default("snmp ping-interval-second 1-255",
(char *) __STR__(DEFAULT_SNMPMGR_AGENTX_PING_INTERVAL_SEC));
ping_interval_string = config_get("snmp ping-interval-second 1-255");
ping_interval = DEFAULT_SNMPMGR_AGENTX_PING_INTERVAL_SEC; /* default value */
}
#else
/*
* FIXME:
* Fetch it from the datastore.
*/
ping_interval = DEFAULT_SNMPMGR_AGENTX_PING_INTERVAL_SEC;
#endif /* THE_CONFSYS_ERA */
if (netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_AGENTX_PING_INTERVAL,
(int)ping_interval)
!= SNMPERR_SUCCESS) {
initialize_ret = LAGOPUS_RESULT_SNMP_API_ERROR;
return;
}
if (init_agent(SNMP_TYPE) != SNMPERR_SUCCESS) {
initialize_ret = LAGOPUS_RESULT_SNMP_API_ERROR;
return;
}
if ((ret = lagopus_hashmap_create(&iftable_entry_hash,
LAGOPUS_HASHMAP_TYPE_STRING,
delete_entry)) != LAGOPUS_RESULT_OK) {
lagopus_perror(ret);
exit(1);
}
init_ifTable();
init_ifNumber();
init_dot1dBaseBridgeAddress();
init_dot1dBaseNumPorts();
init_dot1dBasePortTable();
init_dot1dBaseType();
if (is_thread == false) {
initialize_ret = LAGOPUS_RESULT_OK;
} else {
keep_running = true;
initialize_ret = lagopus_thread_create(&snmpmgr,
snmpmgr_thread_loop,
snmpmgr_thread_finally_called,
NULL,
"snmpmgr",
NULL);
}
lagopus_msg_info("SNMP manager initialized.\n");
}