int handle_snmp_event(struct oflops_context * ctx, struct snmp_event * se)
{
char buf[1024];
snprint_variable(buf, sizeof(buf), se->reply->name, se->reply->name_length, se->reply);
fprintf(stderr,"SNMP response: %s\n",buf);
return 0;
}
/*
* simple printing of returned data
*/
int snmpStoreResult (tSession *session, struct snmp_pdu *pdu, char **result)
{
char buf[RESULTSIZE];
struct variable_list *vp;
struct snmp_session *sp = session->sess;
unsigned int o = session->current_oid;
unsigned int i,j;
*result = (char*)calloc(RESULTSIZE+1, sizeof(char));
vp = pdu->variables;
if (pdu->errstat == SNMP_ERR_NOERROR) {
while (vp) {
snprint_value(*result, RESULTSIZE, vp->name, vp->name_length, vp);
// tolower & remove spaces and linebreaks
for (i=0, j=0; i<strlen(*result); i++) {
if ((*result)[i] > 0x22) {
if ((*result)[i] >= 0x41 && (*result)[i] <= 0x5A) {
(*result)[j] = (*result)[i] + 0x20;
} else {
(*result)[j] = (*result)[i];
}
j++;
}
}
(*result)[j] = 0;
// fix lancom snr
if (session->oidList.oid[o].id_oidtype == 12 &&
( session->oidList.oid[o].id_type == 2 ||
session->oidList.oid[o].id_type == 5 ||
session->oidList.oid[o].id_type == 9 ||
session->oidList.oid[o].id_type == 24 )) {
snprintf(*result, RESULTSIZE, "%.0f", atoi(*result) * 0.64);
}
snprint_variable(buf, sizeof(buf), vp->name, vp->name_length, vp);
syslog(LOG_DEBUG, "snmpStoreResult: %s: %s", sp->peername, buf);
vp = vp->next_variable;
}
return 1;
} else {
if (vp) {
snprint_objid(buf, sizeof(buf), vp->name, vp->name_length);
} else {
strcpy(buf, "(empty buf)");
}
syslog(LOG_ERR, "snmpStoreResult: %s: %s: (%s)", sp->peername, buf, snmp_errstring(pdu->errstat));
if (pdu->errstat == SNMP_ERR_NOSUCHNAME) {
snprintf(*result, RESULTSIZE, "U");
return 1;
}
return 0;
}
}
void processSnmpGet(char * oid){
read_objid(oid, id_oid, &id_len);
snmp_add_null_var(pdu, id_oid, id_len);
int status = snmp_synch_response(session_handle, pdu, &response);
for(vars = response->variables; vars; vars = vars->next_variable){
snprint_variable(outbuff, 256, vars->name, vars->name_length, vars);
resultString = strrchr(outbuff, ':');
}
}
int return_data(int status, struct snmp_session *sp, struct snmp_pdu *pdu)
{
char buf[1024];
struct variable_list *vp;
int ix;
char *getdata = NULL;
switch (status) {
case STAT_SUCCESS:
vp = pdu->variables;
if (pdu->errstat == SNMP_ERR_NOERROR) {
while (vp) {
snprint_variable(buf, sizeof(buf), vp->name, vp->name_length, vp);
/*mjpark------------------------------------------*/
getdata = (char *)malloc(1 + vp->val_len);
memcpy(getdata, vp->val.string, vp->val_len);
getdata[vp->val_len] = '\0';
#if 0
//Data over flow...
int nVal;
memcpy((void *)&nVal, getdata, 4);
#else
unsigned long int nVal;
memcpy((void *)&nVal, getdata, sizeof(unsigned long int));
#endif
gpSnmp->val = nVal;
//debug print
/* printf("data length(%d), unsigned long int size(%d), int(%d)\n",vp->val_len, sizeof(unsigned long int), sizeof(int)); */
printf("snmpVal(%d), psnmp(%p)\n", nVal, gpSnmp);
/*------------------------------------------------*/
vp = vp->next_variable;
}
free(getdata);
}
else {
for (ix = 1; vp && ix != pdu->errindex; vp = vp->next_variable, ix++);
if (vp)
snprint_objid(buf, sizeof(buf), vp->name, vp->name_length);
else
strcpy(buf, "(none)");
fprintf(stdout, "%s: %s: %s\n", sp->peername, buf, snmp_errstring(pdu->errstat));
}
return 1;
case STAT_TIMEOUT:
fprintf(stdout, "%s: Timeout\n", sp->peername);
return 0;
case STAT_ERROR:
snmp_perror(sp->peername);
return 0;
}
return 0;
}
char *session_query(struct snmp_session *ss, struct snmp_pdu *pdu) {
struct snmp_pdu *response;
struct variable_list *vars;
int status;
char buf[SPRINT_MAX_LEN];
char *rbuffer=NULL;
/* Send the Request */
status = snmp_synch_response(ss, pdu, &response);
/* Process the response */
if (status == STAT_SUCCESS && response->errstat == SNMP_ERR_NOERROR )
{
/* Success: Print the results */
/* for (vars=response->variables; vars; vars=vars->next_variable) { */
vars=response->variables;
if (vars!=NULL && vars->type <ASN_LONG_LEN) {
if (vars->type == ASN_INTEGER) {
sprintf(buf,"%ld",*vars->val.integer);
rbuffer=malloc(sizeof(char)*(strlen(buf)+1));
memset(rbuffer,'\0',strlen(buf)+1);
strncpy(rbuffer,buf,strlen(buf));
} else {
snprint_variable(buf, sizeof (buf), vars->name, vars->name_length, vars);
rbuffer=malloc(sizeof(char)*(strlen(buf)+1));
memset(rbuffer,'\0',strlen(buf)+1);
strncpy(rbuffer,buf,strlen(buf));
}
} else rbuffer = NULL;
} else {
/* Failure: print what went wrong */
if (status == STAT_SUCCESS)
fprintf(stderr,"Error in packet.\nReason: %s\n", snmp_errstring(response->errstat));
else
snmp_sess_perror("snmpget ", ss);
}
/* Clean up */
if (response) snmp_free_pdu(response);
// printf("Result : %s\n",rbuffer);
return rbuffer;
}
char *session_set( struct snmp_session *ss,const char *name, const char *value ) {
struct snmp_pdu *pdu, *response;
oid anOID[MAX_OID_LEN];
size_t anOID_len = MAX_OID_LEN;
struct variable_list *vars;
int status;
char buf[SPRINT_MAX_LEN];
char *rbuffer=NULL;
/* create PDU for request */
pdu = snmp_pdu_create(SNMP_MSG_SET);
get_node(name, anOID, &anOID_len);
snmp_add_var(pdu, anOID, anOID_len,'i',value);
// snmp_add_null_var(pdu, anOID, anOID_len);
/* Send the Request */
status = snmp_synch_response(ss, pdu, &response);
/* Process the response */
if (status == STAT_SUCCESS && response->errstat == SNMP_ERR_NOERROR) {
/* Success: Print the results */
/* for (vars=response->variables; vars; vars=vars->next_variable) { */
vars=response->variables;
if (vars!=NULL) {
snprint_variable(buf, sizeof (buf), vars->name, vars->name_length, vars);
rbuffer=malloc(sizeof(char)*(strlen(buf)+1));
memset(rbuffer,'\0',strlen(buf)+1);
strncpy(rbuffer,buf,strlen(buf));
} else rbuffer = NULL;
} else {
/* Failure: print what went wrong */
if (status == STAT_SUCCESS)
fprintf(stderr,"Error in packet.\nReason: %s\n", snmp_errstring(response->errstat));
else
snmp_sess_perror("snmpset", ss);
}
/* Clean up */
/* if (pdu) snmp_free_pdu(pdu); */
if (response) snmp_free_pdu(response);
return rbuffer;
}
int print_result(int status, struct snmp_session *sp, struct snmp_pdu *pdu)
{
char buf[1024];
struct variable_list *vp;
int ix;
struct timeval now;
struct timezone tz;
struct tm *tm;
gettimeofday(&now, &tz);
tm = localtime(&now.tv_sec);
fprintf(stdout, "%.2d:%.2d:%.2d.%.6d, status: %d, ", tm->tm_hour, tm->tm_min, tm->tm_sec,
now.tv_usec, status);
switch (status) {
case STAT_SUCCESS:
vp = pdu->variables;
if (pdu->errstat == SNMP_ERR_NOERROR) {
while (vp) {
snprint_variable(buf, sizeof(buf), vp->name, vp->name_length, vp);
fprintf(stdout, ":%s: %s\n", sp->peername, buf);
vp = vp->next_variable;
}
}
else {
for (ix = 1; vp && ix != pdu->errindex; vp = vp->next_variable, ix++)
;
if (vp) snprint_objid(buf, sizeof(buf), vp->name, vp->name_length);
else strcpy(buf, "(none)");
fprintf(stdout, ":%s: %s: %s\n",
sp->peername, buf, snmp_errstring(pdu->errstat));
}
return 1;
case STAT_TIMEOUT:
fprintf(stdout, ":%s: Timeout\n", sp -> peername);
return 0;
case STAT_ERROR:
snmp_perror(sp->peername);
return 0;
}
return 0;
}
int return_data(int status, struct snmp_session *sp, struct snmp_pdu *pdu) /* simple printing of returned data */
{
char buf[1024];
struct variable_list *vp;
int ix;
char *getdata = NULL;
unsigned long int nVal;
/* unsigned char sVal; */
/* int ipVal; */
switch (status) {
case STAT_SUCCESS:
vp = pdu->variables;
if (pdu->errstat == SNMP_ERR_NOERROR) {
while (vp) {
snprint_variable(buf, sizeof(buf), vp->name, vp->name_length, vp);
/*mjpark------------------------------------------*/
getdata = (char *)malloc(1 + vp->val_len);
memcpy(getdata, vp->val.string, vp->val_len);
getdata[vp->val_len] = '\0';
switch(vp->type)
{
case ASN_OCTET_STR:
/* { */
/* memcpy((void *)&sVal, getdata, sizeof(unsigned char)); */
/* gpSnmpstr->val = sVal; */
/* break; */
/* } */
case ASN_GAUGE:
case ASN_COUNTER:
case ASN_TIMETICKS:
case ASN_INTEGER:
{
memcpy((void *)&nVal, getdata, sizeof(unsigned long int));
gpSnmp->val = nVal;
break;
}
case ASN_IPADDRESS:
{
/* struct in_addr st_addr; */
/* memcpy((void *)&ipVal, getdata, 4); */
/* st_addr.s_addr = ipVal; */
/* gpSnmpstr->val = inet_ntoa(st_addr); */
break;
}
}
//debug print
//printf("data length(%d), unsigned long int size(%d), int(%d)\n",vp->val_len, sizeof(unsigned long int), sizeof(int));
/* printf("snmpVal(%d), psnmp(%p)\n", nVal, gpSnmp); */
/*------------------------------------------------*/
vp = vp->next_variable;
}
free(getdata);
}
else {
for (ix = 1; vp && ix != pdu->errindex; vp = vp->next_variable, ix++);
if (vp)
snprint_objid(buf, sizeof(buf), vp->name, vp->name_length);
else
strcpy(buf, "(none)");
fprintf(stdout, "%s: %s: %s\n", sp->peername, buf, snmp_errstring(pdu->errstat));
}
return 1;
case STAT_TIMEOUT:
fprintf(stdout, "%s: Timeout\n", sp->peername);
return 0;
case STAT_ERROR:
snmp_perror(sp->peername);
return 0;
}
return 0;
}
static int csnmp_read_value (host_definition_t *host, data_definition_t *data)
{
struct snmp_pdu *req;
struct snmp_pdu *res;
struct variable_list *vb;
const data_set_t *ds;
value_list_t vl = VALUE_LIST_INIT;
int status;
size_t i;
DEBUG ("snmp plugin: csnmp_read_value (host = %s, data = %s)",
host->name, data->name);
if (host->sess_handle == NULL)
{
DEBUG ("snmp plugin: csnmp_read_value: host->sess_handle == NULL");
return (-1);
}
ds = plugin_get_ds (data->type);
if (!ds)
{
ERROR ("snmp plugin: DataSet `%s' not defined.", data->type);
return (-1);
}
if (ds->ds_num != data->values_len)
{
ERROR ("snmp plugin: DataSet `%s' requires %zu values, but config talks about %zu",
data->type, ds->ds_num, data->values_len);
return (-1);
}
vl.values_len = ds->ds_num;
vl.values = (value_t *) malloc (sizeof (value_t) * vl.values_len);
if (vl.values == NULL)
return (-1);
for (i = 0; i < vl.values_len; i++)
{
if (ds->ds[i].type == DS_TYPE_COUNTER)
vl.values[i].counter = 0;
else
vl.values[i].gauge = NAN;
}
sstrncpy (vl.host, host->name, sizeof (vl.host));
sstrncpy (vl.plugin, "snmp", sizeof (vl.plugin));
sstrncpy (vl.type, data->type, sizeof (vl.type));
sstrncpy (vl.type_instance, data->instance.string, sizeof (vl.type_instance));
vl.interval = host->interval;
req = snmp_pdu_create (SNMP_MSG_GET);
if (req == NULL)
{
ERROR ("snmp plugin: snmp_pdu_create failed.");
sfree (vl.values);
return (-1);
}
for (i = 0; i < data->values_len; i++)
snmp_add_null_var (req, data->values[i].oid, data->values[i].oid_len);
res = NULL;
status = snmp_sess_synch_response (host->sess_handle, req, &res);
if ((status != STAT_SUCCESS) || (res == NULL))
{
char *errstr = NULL;
snmp_sess_error (host->sess_handle, NULL, NULL, &errstr);
ERROR ("snmp plugin: host %s: snmp_sess_synch_response failed: %s",
host->name, (errstr == NULL) ? "Unknown problem" : errstr);
if (res != NULL)
snmp_free_pdu (res);
res = NULL;
sfree (errstr);
csnmp_host_close_session (host);
return (-1);
}
for (vb = res->variables; vb != NULL; vb = vb->next_variable)
{
#if COLLECT_DEBUG
char buffer[1024];
snprint_variable (buffer, sizeof (buffer),
vb->name, vb->name_length, vb);
DEBUG ("snmp plugin: Got this variable: %s", buffer);
#endif /* COLLECT_DEBUG */
for (i = 0; i < data->values_len; i++)
if (snmp_oid_compare (data->values[i].oid, data->values[i].oid_len,
vb->name, vb->name_length) == 0)
vl.values[i] = csnmp_value_list_to_value (vb, ds->ds[i].type,
data->scale, data->shift, host->name, data->name);
} /* for (res->variables) */
if (res != NULL)
snmp_free_pdu (res);
res = NULL;
DEBUG ("snmp plugin: -> plugin_dispatch_values (&vl);");
plugin_dispatch_values (&vl);
sfree (vl.values);
return (0);
} /* int csnmp_read_value */
gchar *
snmp_probe(gchar *peer, gint port, gchar *community)
{
oid sysDescr[MAX_OID_LEN];
size_t sysDescr_length;
oid sysObjectID[MAX_OID_LEN];
size_t sysObjectID_length;
oid sysUpTime[MAX_OID_LEN];
size_t sysUpTime_length;
oid sysContact[MAX_OID_LEN];
size_t sysContact_length;
oid sysName[MAX_OID_LEN];
size_t sysName_length;
oid sysLocation[MAX_OID_LEN];
size_t sysLocation_length;
struct snmp_session session, *ss;
struct snmp_pdu *pdu, *response;
struct variable_list *vars;
int count;
int status;
char textbuf[1024];
char *result = NULL;
char *tmp = NULL;
/* transform interesting OIDs */
sysDescr_length = MAX_OID_LEN;
if (!snmp_parse_oid("system.sysDescr.0", sysDescr, &sysDescr_length))
printf("error parsing oid: system.sysDescr.0\n");
sysObjectID_length = MAX_OID_LEN;
if (!snmp_parse_oid("system.sysObjectID.0", sysObjectID, &sysObjectID_length))
printf("error parsing oid: system.sysObjectID.0\n");
sysUpTime_length = MAX_OID_LEN;
if (!snmp_parse_oid("system.sysUpTime.0", sysUpTime, &sysUpTime_length))
printf("error parsing oid: system.sysUpTime.0\n");
sysContact_length = MAX_OID_LEN;
if (!snmp_parse_oid("system.sysContact.0", sysContact, &sysContact_length))
printf("error parsing oid: system.sysContact.0\n");
sysName_length = MAX_OID_LEN;
if (!snmp_parse_oid("system.sysName.0", sysName, &sysName_length))
printf("error parsing oid: system.sysName.0\n");
sysLocation_length = MAX_OID_LEN;
if (!snmp_parse_oid("system.sysLocation.0", sysLocation, &sysLocation_length))
printf("error parsing oid: system.sysLocation.0\n");
/* initialize session to default values */
snmp_sess_init( &session );
session.version = SNMP_VERSION_1;
session.community = community;
session.community_len = strlen(community);
session.peername = peer;
#ifdef STREAM
session.flags |= SNMP_FLAGS_STREAM_SOCKET;
fprintf (stderr, "local port set to: %d\n", session.local_port);
#endif
/*
* Open an SNMP session.
*/
ss = snmp_open(&session);
if (ss == NULL){
fprintf (stderr, "local port set to: %d\n", session.local_port);
snmp_sess_perror("snmp_open", &session);
exit(1);
}
/*
* Create PDU for GET request and add object names to request.
*/
pdu = snmp_pdu_create(SNMP_MSG_GET);
snmp_add_null_var(pdu, sysDescr, sysDescr_length);
snmp_add_null_var(pdu, sysObjectID, sysObjectID_length);
snmp_add_null_var(pdu, sysUpTime, sysUpTime_length);
snmp_add_null_var(pdu, sysContact, sysContact_length);
snmp_add_null_var(pdu, sysName, sysName_length);
snmp_add_null_var(pdu, sysLocation, sysLocation_length);
/*
* Perform the request.
*
* If the Get Request fails, note the OID that caused the error,
* "fix" the PDU (removing the error-prone OID) and retry.
*/
retry:
status = snmp_synch_response(ss, pdu, &response);
if (status == STAT_SUCCESS){
if (response->errstat == SNMP_ERR_NOERROR){
/* just render all vars */
for(vars = response->variables; vars; vars = vars->next_variable) {
snprint_variable(textbuf, 1023, vars->name, vars->name_length, vars);
textbuf[1023] = '\0';
if (result) {
tmp = result;
result = g_strdup_printf("%s\n%s\n", tmp, textbuf);
g_free(tmp);
} else {
result = g_strdup_printf("%s\n", textbuf);
}
}
} else {
fprintf(stderr, "Error in packet\nReason: %s\n",
snmp_errstring(response->errstat));
if (response->errstat == SNMP_ERR_NOSUCHNAME){
fprintf(stderr, "This name doesn't exist: ");
for(count = 1, vars = response->variables;
vars && count != response->errindex;
vars = vars->next_variable, count++)
/*EMPTY*/ ;
if (vars)
fprint_objid(stderr, vars->name, vars->name_length);
fprintf(stderr, "\n");
}
/* retry if the errored variable was successfully removed */
pdu = snmp_fix_pdu(response, SNMP_MSG_GET);
snmp_free_pdu(response);
response = NULL;
if (pdu != NULL)
goto retry;
} /* endif -- SNMP_ERR_NOERROR */
} else if (status == STAT_TIMEOUT){
snmp_close(ss);
return g_strdup_printf("Timeout: No Response from %s.\n", session.peername);
} else { /* status == STAT_ERROR */
fprintf (stderr, "local port set to: %d\n", session.local_port);
snmp_sess_perror("STAT_ERROR", ss);
snmp_close(ss);
return NULL;
} /* endif -- STAT_SUCCESS */
if (response)
snmp_free_pdu(response);
snmp_close(ss);
return result;
}
/* Handling of results */
static void noit_snmp_log_results(noit_module_t *self, noit_check_t *check,
struct snmp_pdu *pdu) {
struct check_info *info = check->closure;
struct variable_list *vars;
struct timeval duration;
char buff[128];
stats_t current;
int nresults = 0;
noit_check_stats_clear(check, ¤t);
if(pdu)
for(vars = pdu->variables; vars; vars = vars->next_variable)
nresults++;
gettimeofday(¤t.whence, NULL);
sub_timeval(current.whence, check->last_fire_time, &duration);
current.duration = duration.tv_sec * 1000 + duration.tv_usec / 1000;
current.available = pdu ? NP_AVAILABLE : NP_UNAVAILABLE;
current.state = (nresults == info->noids) ? NP_GOOD : NP_BAD;
snprintf(buff, sizeof(buff), "%d/%d gets", nresults, info->noids);
current.status = buff;
/* We have no results over which to iterate. */
if(!pdu) {
noit_check_set_stats(check, ¤t);
return;
}
/* manipulate the information ourselves */
nresults = 0;
for(vars = pdu->variables; vars; vars = vars->next_variable) {
char *sp;
int oid_idx;
double float_conv;
u_int64_t u64;
int64_t i64;
char *endptr;
char varbuff[256];
/* find the oid to which this is the response */
oid_idx = nresults; /* our current idx is the most likely */
if(info->oids[oid_idx].oidlen != vars->name_length ||
memcmp(info->oids[oid_idx].oid, vars->name,
vars->name_length * sizeof(oid))) {
/* Not the most obvious guess */
for(oid_idx = info->noids - 1; oid_idx >= 0; oid_idx--) {
if(info->oids[oid_idx].oidlen == vars->name_length &&
memcmp(info->oids[oid_idx].oid, vars->name,
vars->name_length * sizeof(oid))) break;
}
}
if(oid_idx < 0) {
snprint_variable(varbuff, sizeof(varbuff),
vars->name, vars->name_length, vars);
noitL(nlerr, "Unexpected oid results to %s`%s`%s: %s\n",
check->target, check->module, check->name, varbuff);
nresults++;
continue;
}
#define SETM(a,b) noit_stats_set_metric(check, ¤t, \
info->oids[oid_idx].confname, a, b)
if(info->oids[oid_idx].type_should_override) {
snprint_value(varbuff, sizeof(varbuff), vars->name, vars->name_length, vars);
sp = strchr(varbuff, ' ');
if(sp) sp++;
noit_stats_set_metric_coerce(check, ¤t, info->oids[oid_idx].confname,
info->oids[oid_idx].type_override,
sp);
}
else {
switch(vars->type) {
case ASN_OCTET_STR:
sp = malloc(1 + vars->val_len);
memcpy(sp, vars->val.string, vars->val_len);
sp[vars->val_len] = '\0';
SETM(METRIC_STRING, sp);
free(sp);
break;
case ASN_INTEGER:
case ASN_GAUGE:
SETM(METRIC_INT32, vars->val.integer);
break;
case ASN_TIMETICKS:
case ASN_COUNTER:
SETM(METRIC_UINT32, vars->val.integer);
break;
case ASN_INTEGER64:
printI64(varbuff, vars->val.counter64);
i64 = strtoll(varbuff, &endptr, 10);
SETM(METRIC_INT64, (varbuff == endptr) ? NULL : &i64);
break;
case ASN_COUNTER64:
printU64(varbuff, vars->val.counter64);
u64 = strtoull(varbuff, &endptr, 10);
SETM(METRIC_UINT64, (varbuff == endptr) ? NULL : &u64);
break;
case ASN_FLOAT:
if(vars->val.floatVal) float_conv = *(vars->val.floatVal);
SETM(METRIC_DOUBLE, vars->val.floatVal ? &float_conv : NULL);
break;
case ASN_DOUBLE:
SETM(METRIC_DOUBLE, vars->val.doubleVal);
break;
case SNMP_NOSUCHOBJECT:
case SNMP_NOSUCHINSTANCE:
SETM(METRIC_STRING, NULL);
break;
default:
snprint_variable(varbuff, sizeof(varbuff), vars->name, vars->name_length, vars);
/* Advance passed the first space and use that unless there
* is no space or we have no more string left.
*/
sp = strchr(varbuff, ' ');
if(sp) sp++;
SETM(METRIC_STRING, (sp && *sp) ? sp : NULL);
}
}
nresults++;
}
noit_check_set_stats(check, ¤t);
}
