void snmp_process(void) {
int nfds = 0;
int block = 1;
fd_set fdset;
struct timeval timeout;
if (snmp_repeaterinfo_received) {
snmp_repeaterinfo_received = 0;
if (snmp_session_repeaterinfo != NULL) {
snmp_close(snmp_session_repeaterinfo);
snmp_session_repeaterinfo = NULL;
}
}
if (snmp_rssi_received) {
snmp_rssi_received = 0;
if (snmp_session_rssi != NULL) {
snmp_close(snmp_session_rssi);
snmp_session_rssi = NULL;
}
}
FD_ZERO(&fdset);
if (snmp_select_info(&nfds, &fdset, &timeout, &block) <= 0)
return;
// Timeout is handled by daemon-poll.
daemon_poll_setmaxtimeout(timeout.tv_sec*1000+timeout.tv_usec/1000);
// As timeout is handled by daemon-poll, we want select() to return immediately here.
timeout.tv_sec = timeout.tv_usec = 0;
nfds = select(nfds, &fdset, NULL, NULL, &timeout);
if (nfds > 0)
snmp_read(&fdset);
else
snmp_timeout();
}
int set_snmp(void *precord, const char *sval)
{
snmpRecord *psnmp = (snmpRecord *)precord;
SNMP_INFO *snmpinfo = (SNMP_INFO*)psnmp->dpvt;
char type = 'i';
if (!(snmpinfo->sess = snmp_open(&snmpinfo->ss))) {
snmp_perror("snmp_open");
return -1;
};
snmpinfo->setreq = snmp_pdu_create(SNMP_MSG_SET); /* send the first GET */
if (! snmpinfo->setreq) {
snmp_close(snmpinfo->sess); /* cleanup */
return -1;
}
snmp_add_var(snmpinfo->setreq, snmpinfo->oid_info.Oid, snmpinfo->oid_info.OidLen, type, sval); //snmp_add_var(netsnmp_pdu *, const oid *, size_t, char, const char *)
if (snmp_send(snmpinfo->sess, snmpinfo->setreq))
hosts++;
else {
snmp_perror("snmp_getsend");
snmp_free_pdu(snmpinfo->setreq);
return -1;
}
active_hosts();
snmp_close(snmpinfo->sess); /* cleanup */
return 0;
}
void get_snmp(void *precord)
{
snmpRecord *psnmp = (snmpRecord *)precord;
SNMP_INFO *snmpinfo = (SNMP_INFO*)psnmp->dpvt;
if (!(snmpinfo->sess = snmp_open(&snmpinfo->ss))) {
snmp_perror("snmp_open");
};
snmpinfo->getreq = snmp_pdu_create(SNMP_MSG_GET); /* send the first GET */
if (! snmpinfo->getreq) {
snmp_close(snmpinfo->sess); /* cleanup */
}
snmp_add_null_var(snmpinfo->getreq, snmpinfo->oid_info.Oid, snmpinfo->oid_info.OidLen);
if (snmp_send(snmpinfo->sess, snmpinfo->getreq))
hosts++;
else {
snmp_perror("snmp_setsend");
snmp_free_pdu(snmpinfo->getreq);
}
active_hosts();
snmp_close(snmpinfo->sess); /* cleanup */
}
/*
* check a session validity for connectivity to the master agent. If
* not functioning, close and start attempts to reopen the session
*/
void agentx_check_session (unsigned int clientreg, void *clientarg)
{
netsnmp_session *ss = (netsnmp_session *) clientarg;
if (!ss)
{
if (clientreg)
snmp_alarm_unregister (clientreg);
return;
}
DEBUGMSGTL (("agentx/subagent", "checking status of session %p\n", ss));
if (!agentx_send_ping (ss))
{
snmp_log (LOG_WARNING, "AgentX master agent failed to respond to ping. Attempting to re-register.\n");
/*
* master agent disappeared? Try and re-register.
* close first, just to be sure .
*/
agentx_unregister_callbacks (ss);
agentx_close_session (ss, AGENTX_CLOSE_TIMEOUT);
snmp_alarm_unregister (clientreg); /* delete ping alarm timer */
snmp_call_callbacks (SNMP_CALLBACK_APPLICATION, SNMPD_CALLBACK_INDEX_STOP, (void *) ss);
register_mib_detach ();
if (main_session != NULL)
{
remove_trap_session (ss);
snmp_close (main_session);
/*
* We need to remove the callbacks attached to the callback
* session because they have a magic callback data structure
* which includes a pointer to the main session
* (which is no longer valid).
*
* Given that the main session is not responsive anyway.
* it shoudn't matter if we lose some outstanding requests.
*/
if (agentx_callback_sess != NULL)
{
snmp_close (agentx_callback_sess);
agentx_callback_sess = NULL;
subagent_init_callback_session ();
}
main_session = NULL;
agentx_reopen_session (0, NULL);
}
else
{
snmp_close (main_session);
main_session = NULL;
}
}
else
{
DEBUGMSGTL (("agentx/subagent", "session %p responded to ping\n", ss));
}
}
int ups_mib_mgr_get_upsBypassEntry(struct snmp_session *s, upsBypassEntry_t **upsBypassEntry)
{
struct snmp_session *peer;
struct snmp_pdu *request, *response;
struct variable_list *vars;
int status;
request = snmp_pdu_create(SNMP_MSG_GETNEXT);
snmp_add_null_var(request, upsBypassVoltage, sizeof(upsBypassVoltage)/sizeof(oid));
snmp_add_null_var(request, upsBypassCurrent, sizeof(upsBypassCurrent)/sizeof(oid));
snmp_add_null_var(request, upsBypassPower, sizeof(upsBypassPower)/sizeof(oid));
peer = snmp_open(s);
if (!peer) {
return -1;
}
status = snmp_synch_response(peer, request, &response);
if (status != STAT_SUCCESS) {
if (response) snmp_free_pdu(response);
snmp_close(peer);
return -2;
}
*upsBypassEntry = (upsBypassEntry_t *) malloc(sizeof(upsBypassEntry_t));
if (! *upsBypassEntry) {
if (response) snmp_free_pdu(response);
snmp_close(peer);
return -4;
}
for (vars = response->variables; vars; vars = vars->next_variable) {
if (vars->name_length > sizeof(upsBypassVoltage)/sizeof(oid)
&& memcmp(vars->name, upsBypassVoltage, sizeof(upsBypassVoltage)) == 0) {
(*upsBypassEntry)->__upsBypassVoltage = *vars->val.integer;
(*upsBypassEntry)->upsBypassVoltage = &((*upsBypassEntry)->__upsBypassVoltage);
}
if (vars->name_length > sizeof(upsBypassCurrent)/sizeof(oid)
&& memcmp(vars->name, upsBypassCurrent, sizeof(upsBypassCurrent)) == 0) {
(*upsBypassEntry)->__upsBypassCurrent = *vars->val.integer;
(*upsBypassEntry)->upsBypassCurrent = &((*upsBypassEntry)->__upsBypassCurrent);
}
if (vars->name_length > sizeof(upsBypassPower)/sizeof(oid)
&& memcmp(vars->name, upsBypassPower, sizeof(upsBypassPower)) == 0) {
(*upsBypassEntry)->__upsBypassPower = *vars->val.integer;
(*upsBypassEntry)->upsBypassPower = &((*upsBypassEntry)->__upsBypassPower);
}
}
if (response) snmp_free_pdu(response);
if (snmp_close(peer) == 0) {
return -5;
}
return 0;
}
int ups_mib_mgr_get_upsOutput(struct snmp_session *s, upsOutput_t **upsOutput)
{
struct snmp_session *peer;
struct snmp_pdu *request, *response;
struct variable_list *vars;
int status;
request = snmp_pdu_create(SNMP_MSG_GETNEXT);
snmp_add_null_var(request, upsOutputSource, sizeof(upsOutputSource)/sizeof(oid));
snmp_add_null_var(request, upsOutputFrequency, sizeof(upsOutputFrequency)/sizeof(oid));
snmp_add_null_var(request, upsOutputNumLines, sizeof(upsOutputNumLines)/sizeof(oid));
peer = snmp_open(s);
if (!peer) {
return -1;
}
status = snmp_synch_response(peer, request, &response);
if (status != STAT_SUCCESS) {
if (response) snmp_free_pdu(response);
snmp_close(peer);
return -2;
}
*upsOutput = (upsOutput_t *) malloc(sizeof(upsOutput_t));
if (! *upsOutput) {
if (response) snmp_free_pdu(response);
snmp_close(peer);
return -4;
}
for (vars = response->variables; vars; vars = vars->next_variable) {
if (vars->name_length > sizeof(upsOutputSource)/sizeof(oid)
&& memcmp(vars->name, upsOutputSource, sizeof(upsOutputSource)) == 0) {
(*upsOutput)->__upsOutputSource = *vars->val.integer;
(*upsOutput)->upsOutputSource = &((*upsOutput)->__upsOutputSource);
}
if (vars->name_length > sizeof(upsOutputFrequency)/sizeof(oid)
&& memcmp(vars->name, upsOutputFrequency, sizeof(upsOutputFrequency)) == 0) {
(*upsOutput)->__upsOutputFrequency = *vars->val.integer;
(*upsOutput)->upsOutputFrequency = &((*upsOutput)->__upsOutputFrequency);
}
if (vars->name_length > sizeof(upsOutputNumLines)/sizeof(oid)
&& memcmp(vars->name, upsOutputNumLines, sizeof(upsOutputNumLines)) == 0) {
(*upsOutput)->__upsOutputNumLines = *vars->val.integer;
(*upsOutput)->upsOutputNumLines = &((*upsOutput)->__upsOutputNumLines);
}
}
if (response) snmp_free_pdu(response);
if (snmp_close(peer) == 0) {
return -5;
}
return 0;
}
void snmp_deinit(void) {
console_log("snmp: deinit\n");
iconv_close(conv_utf16_utf8);
if (snmp_session_repeaterinfo != NULL) {
snmp_close(snmp_session_repeaterinfo);
snmp_session_repeaterinfo = NULL;
}
if (snmp_session_rssi != NULL) {
snmp_close(snmp_session_rssi);
snmp_session_rssi = NULL;
}
}
static void
free_trap_session(struct trap_sink *sp)
{
DEBUGMSGTL(("trap", "freeing callback trap session (%p, %p)\n", sp, sp->sesp));
snmp_close(sp->sesp);
free(sp);
}
/*
* simple synchronous loop
*/
void synchronous (void)
{
struct host *hp;
for (hp = hosts; hp->name; hp++) {
struct snmp_session ss, *sp;
struct oid *op;
snmp_sess_init(&ss); /* initialize session */
ss.version = SNMP_VERSION_2c;
ss.peername = strdup(hp->name);
ss.community = strdup(hp->community);
ss.community_len = strlen(ss.community);
if (!(sp = snmp_open(&ss))) {
snmp_perror("snmp_open");
continue;
}
for (op = oids; op->Name; op++) {
struct snmp_pdu *req, *resp;
int status;
req = snmp_pdu_create(SNMP_MSG_GET);
snmp_add_null_var(req, op->Oid, op->OidLen);
status = snmp_synch_response(sp, req, &resp);
if (!print_result(status, sp, resp)) break;
snmp_free_pdu(resp);
}
snmp_close(sp);
}
}
void snmp_bc_close(void *hnd)
{
struct oh_handler_state *handle = (struct oh_handler_state *)hnd;
oh_sel_close(handle->selcache);
if (is_simulator()) {
sim_close();
}
else {
struct snmp_bc_hnd *custom_handle = (struct snmp_bc_hnd *)handle->data;
/* Should we free handle->config? */
/* windows32 specific net-snmp cleanup (is a noop on unix) */
snmp_close(custom_handle->ss);
SOCK_CLEANUP;
}
/* Cleanup event2hpi hash table */
event2hpi_hash_free(handle);
/* Cleanup str2event hash table */
str2event_use_count--;
if (str2event_use_count == 0)
str2event_hash_free();
}
/**
* snmp_bc_close:
* @hnd: Pointer to handler structure.
*
* Close an SNMP BladeCenter/RSA plugin handler instance.
*
* Returns:
* Void
**/
void snmp_bc_close(void *hnd)
{
struct oh_handler_state *handle = (struct oh_handler_state *)hnd;
oh_el_close(handle->elcache);
if (is_simulator()) {
sim_close();
}
else {
struct snmp_bc_hnd *custom_handle = (struct snmp_bc_hnd *)handle->data;
/* FIXME:: Should we free handle->config - same question on A.1.1 code? */
snmp_close(custom_handle->ss);
/* Windows32 specific net-snmp cleanup (noop on unix) */
SOCK_CLEANUP;
}
/* Cleanup event2hpi hash table */
event2hpi_hash_free(handle);
/* Cleanup str2event hash table */
/* FIXME:: Add RSA free here */
bc_xml2event_hash_use_count--;
if (bc_xml2event_hash_use_count == 0) {
xml2event_hash_free(&bc_xml2event_hash);
}
}
/**
* snmp_bc_close:
* @hnd: Pointer to handler structure.
*
* Close an SNMP BladeCenter/RSA plugin handler instance.
*
* Returns:
* Void
**/
void snmp_bc_close(void *hnd)
{
struct oh_handler_state *handle = (struct oh_handler_state *)hnd;
oh_el_close(handle->elcache);
if (is_simulator()) {
sim_close();
}
else {
struct snmp_bc_hnd *custom_handle = (struct snmp_bc_hnd *)handle->data;
snmp_close(custom_handle->ss);
/* Windows32 specific net-snmp cleanup (noop on unix) */
SOCK_CLEANUP;
}
/* Cleanup event2hpi hash table */
event2hpi_hash_free(handle);
/* Cleanup errlog2event_hash table */
errlog2event_hash_use_count--;
if (errlog2event_hash_use_count == 0) {
errlog2event_hash_free();
}
}
static struct snmp_pdu *
snmp_get_item(char *host, char *community, char *mib_item)
{
struct snmp_session session, *ss;
struct snmp_pdu *request = NULL, *result = NULL;
oid Oid[MAX_OID_LEN];
unsigned int oid_len = MAX_OID_LEN;
/* initialize the SNMP session */
snmp_sess_init(&session);
session.peername = host;
session.community = (uchar_t *)community;
session.community_len = strlen((const char *)session.community);
session.version = SNMP_VERSION_1;
session.retries = 0;
if ((ss = snmp_open(&session)) == NULL)
return (NULL);
/* add the requested data */
if (!read_objid(mib_item, Oid, &oid_len))
snmp_perror(mib_item);
/* initialize the request PDU */
request = snmp_pdu_create(SNMP_MSG_GET);
snmp_add_null_var(request, Oid, oid_len);
(void) snmp_synch_response(ss, request, &result);
snmp_close(ss);
return (result);
}
void snmp_start_read_rssi(char *host) {
struct snmp_pdu *pdu;
struct snmp_session session;
const char *community = "public";
if (oid_rssi_ts1_length == 0 || oid_rssi_ts2_length == 0)
return;
snmp_rssi_received = 0;
if (snmp_session_rssi != NULL) {
snmp_close(snmp_session_rssi);
snmp_session_rssi = NULL;
}
snmp_sess_init(&session);
session.version = SNMP_VERSION_1;
session.peername = strdup(host);
session.community = (unsigned char *)strdup(community);
session.community_len = strlen(community);
session.callback = snmp_get_rssi_cb;
if (!(snmp_session_rssi = snmp_open(&session))) {
console_log("snmp error: error opening session to host %s\n", host);
return;
}
pdu = snmp_pdu_create(SNMP_MSG_GET);
snmp_add_null_var(pdu, oid_rssi_ts1, oid_rssi_ts1_length);
snmp_add_null_var(pdu, oid_rssi_ts2, oid_rssi_ts2_length);
if (!snmp_send(snmp_session_rssi, pdu))
console_log("snmp error: error sending rssi request to host %s\n", host);
free(session.peername);
free(session.community);
}
void perr(struct snmp_pdu *resp) {
if(resp) fprintf(stderr, "error: %s\n", snmp_errstring(resp->errstat));
snmp_perror("error");
snmp_close(ses);
SOCK_CLEANUP;
exit(1);
}
void prifalias(oid inst) {
struct snmp_pdu *pdu, *resp;
oid tmp_oid[] = { 1,3,6,1,2,1,31,1,1,1,18,0 };
int stat;
char *tmp;
if(!extended) {
fprintf(stderr, "ifalias is only available in eXtended mode\n");
snmp_close(ses);
SOCK_CLEANUP;
exit(1);
}
tmp_oid[11]=inst;
pdu=snmp_pdu_create(SNMP_MSG_GET);
snmp_add_null_var(pdu, tmp_oid, sizeof(tmp_oid)/sizeof(oid));
stat=snmp_synch_response(ses, pdu, &resp);
if (stat != STAT_SUCCESS || resp->errstat != SNMP_ERR_NOERROR)
perr(resp);
if(resp->variables->val_len && strlen((char *)resp->variables->val.string)) {
tmp=malloc((resp->variables->val_len+1) * sizeof(char));
memcpy(tmp, resp->variables->val.string, resp->variables->val_len);
tmp[resp->variables->val_len]=0;
printf(" \"%s\"", tmp);
free(tmp);
}
if(resp)
snmp_free_pdu(resp);
}
uint32_t getcntr32(int dir, oid inst) {
struct snmp_pdu *pdu, *resp;
oid iftable_oid[] = { 1,3,6,1,2,1,2,2,1,0,0 }; // dir=9 ; inst=10
int stat;
uint32_t tmp;
pdu=snmp_pdu_create(SNMP_MSG_GET);
iftable_oid[9]=dir;
iftable_oid[10]=inst;
snmp_add_null_var(pdu, iftable_oid, sizeof(iftable_oid)/sizeof(oid));
stat=snmp_synch_response(ses, pdu, &resp);
if (stat != STAT_SUCCESS || resp->errstat != SNMP_ERR_NOERROR)
perr(resp);
if(resp->variables->type != ASN_COUNTER) {
fprintf(stderr, "\nError: unsupported data type (only 32bit counter is supported in normal mode)\n");
snmp_close(ses);
SOCK_CLEANUP;
exit(1);
}
tmp=resp->variables->val.counter64->high;
if(resp)
snmp_free_pdu(resp);
return tmp;
}
/*
* check a session validity for connectivity to the master agent. If
* not functioning, close and start attempts to reopen the session
*/
void
agentx_check_session(unsigned int clientreg, void *clientarg)
{
netsnmp_session *ss = (netsnmp_session *) clientarg;
if (!ss) {
if (clientreg)
snmp_alarm_unregister(clientreg);
return;
}
DEBUGMSGTL(("agentx/subagent", "checking status of session %p\n", ss));
if (!agentx_send_ping(ss)) {
snmp_log(LOG_WARNING,
"AgentX master agent failed to respond to ping. Attempting to re-register.\n");
/*
* master agent disappeared? Try and re-register.
* close first, just to be sure .
*/
agentx_unregister_callbacks(ss);
agentx_close_session(ss, AGENTX_CLOSE_TIMEOUT);
snmp_alarm_unregister(clientreg); /* delete ping alarm timer */
snmp_call_callbacks(SNMP_CALLBACK_APPLICATION,
SNMPD_CALLBACK_INDEX_STOP, (void *) ss);
snmp_close(main_session);
main_session = NULL;
agentx_reopen_session(0, NULL);
} else {
DEBUGMSGTL(("agentx/subagent", "session %p responded to ping\n",
ss));
}
}
// Need to clean after each SNMP call, otherwise program fails
void cleanup() {
if (response)
snmp_free_pdu(response);
snmp_close(ss);
SOCK_CLEANUP;
}
/* cleanups session */
void snmp_close_driver(struct ifstat_driver *driver) {
struct snmp_driver_data *data = driver->data;
snmp_close(data->session);
free(data->ifsnmp);
free(data);
}
ENDdbgPrintInstInfo
BEGINisCompatibleWithFeature
CODESTARTisCompatibleWithFeature
/* we are not compatible with repeated msg reduction feature, so do not allow it */
ENDisCompatibleWithFeature
/* Exit SNMP Session
* alorbach, 2008-02-12
*/
static rsRetVal
omsnmp_exitSession(wrkrInstanceData_t *pWrkrData)
{
DEFiRet;
if(pWrkrData->snmpsession != NULL) {
DBGPRINTF("omsnmp_exitSession: Clearing Session to '%s' on Port = '%d'\n",
pWrkrData->pData->szTarget, pWrkrData->pData->iPort);
snmp_close(pWrkrData->snmpsession);
pWrkrData->snmpsession = NULL;
}
RETiRet;
}
static void
wti_mpc_destroy(StonithPlugin * s)
{
struct pluginDevice *ad;
DEBUGCALL;
VOIDERRIFWRONGDEV(s);
ad = (struct pluginDevice *) s;
ad->pluginid = NOTpluginID;
/* release snmp session */
if (ad->sptr != NULL) {
snmp_close(ad->sptr);
ad->sptr = NULL;
}
/* reset defaults */
if (ad->hostname != NULL) {
PluginImports->mfree(ad->hostname);
ad->hostname = NULL;
}
if (ad->community != NULL) {
PluginImports->mfree(ad->community);
ad->community = NULL;
}
ad->num_outlets = 0;
PluginImports->mfree(ad);
}
void * snmp_poll ( void * request_details ) {
snmp_request_t* req = (snmp_request_t*)request_details;
struct snmp_session ss, *sp;
struct oid *op;
snmp_sess_init(&ss); /* initialize session */
ss.version = SNMP_VERSION_2c;
ss.peername = req->target_host;
ss.community = req->community;
ss.community_len = strlen(ss.community);
snmp_synch_setup(&ss);
if (!(sp = snmp_open(&ss)))
snmp_perror("snmp_open");
struct snmp_pdu *req2, *resp;
int status;
req = snmp_pdu_create(SNMP_MSG_GET);
snmp_add_null_var(req2, req->oid, strlen(req->oid));
status = snmp_synch_response(sp, req2, &resp);
snmp_free_pdu(resp);
snmp_close(sp);
// Push the results back to the result queue..
pthread_mutex_lock ( &result_lock ) ;
// TODO: create linked array for a result buffer
pthread_mutex_unlock ( &result_lock ) ;
}
int mau_mib_mgr_get_ifJackEntry(struct snmp_session *s, ifJackEntry_t **ifJackEntry)
{
struct snmp_session *peer;
struct snmp_pdu *request, *response;
struct variable_list *vars;
int status;
request = snmp_pdu_create(SNMP_MSG_GETNEXT);
snmp_add_null_var(request, ifJackType, sizeof(ifJackType)/sizeof(oid));
peer = snmp_open(s);
if (!peer) {
snmp_free_pdu(request);
return -1;
}
status = snmp_synch_response(peer, request, &response);
if (status != STAT_SUCCESS) {
if (response) snmp_free_pdu(response);
snmp_close(peer);
return -2;
}
*ifJackEntry = (ifJackEntry_t *) malloc(sizeof(ifJackEntry_t));
if (! *ifJackEntry) {
if (response) snmp_free_pdu(response);
snmp_close(peer);
return -4;
}
for (vars = response->variables; vars; vars = vars->next_variable) {
if (vars->name_length > sizeof(ifJackType)/sizeof(oid)
&& memcmp(vars->name, ifJackType, sizeof(ifJackType)) == 0) {
(*ifJackEntry)->__ifJackType = *vars->val.integer;
(*ifJackEntry)->ifJackType = &((*ifJackEntry)->__ifJackType);
}
}
if (response) snmp_free_pdu(response);
if (snmp_close(peer) == 0) {
return -5;
}
return 0;
}
void snmp_get(void *precord)
{
snmpRecord *psnmp = (snmpRecord *)precord;
/* SNMP_INFO *gsnmpInfo = (SNMP_INFO*)psnmp->dpvt; */
printf("snmpget()****** Message:%s, version: %s, ip: %s, name: %s, securityname: %s, authpass: %s, privpass: %s, secuauth: %s, secupriv: %s\n", snmpinfo->msg, snmpinfo->ss.version, snmpinfo->ss.peername, snmpinfo->username, snmpinfo->ss.securityName, snmpinfo->authpass, snmpinfo->privpass, snmpinfo->ss.securityAuthKey, snmpinfo->ss.securityPrivKey);
printf("oids: %s\n", psnmp->oids);
if (!(snmpinfo->sess = snmp_open(&snmpinfo->ss))) {
snmp_perror("snmp_open");
};
snmpinfo->getreq = snmp_pdu_create(SNMP_MSG_GET); /* send the first GET */
if (! snmpinfo->getreq) {
snmp_close(snmpinfo->sess); /* cleanup */
}
snmp_add_null_var(snmpinfo->getreq, snmpinfo->oid_info.Oid, snmpinfo->oid_info.OidLen);
/* int snmp_async_send(netsnmp_session *, netsnmp_pdu *, netsnmp_callback, void *) */
/* int snmp_send(netsnmp_session *, netsnmp_pdu *) */
/* if (snmp_async_send(snmpinfo->sess, snmpinfo->getreq, asynch_response, NULL)) */
/* { */
/* hosts++; */
/* } else { */
/* snmp_perror("snmp_get->async_Send Error "); */
/* snmp_free_pdu(snmpinfo->getreq); */
/* } */
if (snmp_send(snmpinfo->sess, snmpinfo->getreq))
{
hosts++;
} else {
snmp_perror("snmp_get->Send Error ");
snmp_free_pdu(snmpinfo->getreq);
}
active_hosts();
snmp_close(snmpinfo->sess); /* cleanup */
}
void Session::close()
{
if ( m_session )
{
snmp_close(m_session);
m_session = false;
}
}
void asynchronous(void)
{
struct session *hs;
struct host *hp;
/* startup all hosts */
for (hs = sessions, hp = hosts; hp->name; hs++, hp++) {
struct snmp_pdu *req;
struct snmp_session sess;
snmp_sess_init(&sess); /* initialize session */
sess.version = SNMP_VERSION_2c;
sess.peername = strdup(hp->name);
sess.community = strdup(hp->community);
sess.community_len = strlen(sess.community);
sess.callback = asynch_response; /* default callback */
sess.callback_magic = hs;
if (!(hs->sess = snmp_open(&sess))) {
snmp_perror("snmp_open");
continue;
}
hs->current_oid = oids;
req = snmp_pdu_create(SNMP_MSG_GET); /* send the first GET */
snmp_add_null_var(req, hs->current_oid->Oid, hs->current_oid->OidLen);
if (snmp_send(hs->sess, req))
active_hosts++;
else {
snmp_perror("snmp_send");
snmp_free_pdu(req);
}
}
/* loop while any active hosts */
while (active_hosts) {
int fds = 0, block = 1;
fd_set fdset;
struct timeval timeout;
FD_ZERO(&fdset);
snmp_select_info(&fds, &fdset, &timeout, &block);
fds = select(fds, &fdset, NULL, NULL, block ? NULL : &timeout);
if (fds < 0) {
perror("select failed");
exit(1);
}
if (fds)
snmp_read(&fdset);
else
snmp_timeout();
}
/* cleanup */
for (hp = hosts, hs = sessions; hp->name; hs++, hp++) {
if (hs->sess) snmp_close(hs->sess);
}
}
static void
Snmp_dealloc(SnmpObject* self)
{
if (self->ss)
snmp_close(self->ss);
Snmp_updatereactor();
Py_XDECREF(self->defers);
self->ob_type->tp_free((PyObject*)self);
}
static void
snmptrapd_close_sessions(netsnmp_session * sess_list)
{
netsnmp_session *s = NULL, *next = NULL;
for (s = sess_list; s != NULL; s = next) {
next = s->next;
snmp_close(s);
}
}
void stophosts(void)
{
struct req_t *rwalk;
for (rwalk = reqhead; (rwalk); rwalk = rwalk->next) {
if (rwalk->sess) {
snmp_close(rwalk->sess);
}
}
}