/*
* Calculates the entries, which are not provided by OS, but can be
* computed from the others.
*/
static void
_calculate_entries(netsnmp_systemstats_entry * entry)
{
/*
* HCInForwDatagrams = HCInNoRoutes + HCOutForwDatagrams
*/
if (!entry->stats.columnAvail[IPSYSTEMSTATSTABLE_HCINFORWDATAGRAMS]
&& entry->stats.columnAvail[IPSYSTEMSTATSTABLE_HCOUTFORWDATAGRAMS]
&& entry->stats.columnAvail[IPSYSTEMSTATSTABLE_HCINNOROUTES]) {
entry->stats.HCInForwDatagrams = entry->stats.HCInNoRoutes;
u64Incr(&entry->stats.HCInForwDatagrams, &entry->stats.HCOutForwDatagrams);
entry->stats.columnAvail[IPSYSTEMSTATSTABLE_HCINFORWDATAGRAMS] = 1;
}
/*
* HCOutFragReqds = HCOutFragOKs + HCOutFragFails
*/
if (!entry->stats.columnAvail[IPSYSTEMSTATSTABLE_HCOUTFRAGREQDS]
&& entry->stats.columnAvail[IPSYSTEMSTATSTABLE_HCOUTFRAGOKS]
&& entry->stats.columnAvail[IPSYSTEMSTATSTABLE_HCOUTFRAGFAILS]) {
entry->stats.HCOutFragReqds = entry->stats.HCOutFragOKs;
u64Incr(&entry->stats.HCOutFragReqds, &entry->stats.HCOutFragFails);
entry->stats.columnAvail[IPSYSTEMSTATSTABLE_HCOUTFRAGREQDS] = 1;
}
/*
* HCOutTransmits = HCOutRequests + HCOutForwDatagrams + HCOutFragCreates
* - HCOutFragReqds - HCOutNoRoutes - HCOutDiscards
*/
if (!entry->stats.columnAvail[IPSYSTEMSTATSTABLE_HCOUTTRANSMITS]
&& entry->stats.columnAvail[IPSYSTEMSTATSTABLE_HCOUTREQUESTS]
&& entry->stats.columnAvail[IPSYSTEMSTATSTABLE_HCOUTFORWDATAGRAMS]
&& entry->stats.columnAvail[IPSYSTEMSTATSTABLE_HCOUTFRAGREQDS]
&& entry->stats.columnAvail[IPSYSTEMSTATSTABLE_HCOUTNOROUTES]
&& entry->stats.columnAvail[IPSYSTEMSTATSTABLE_HCOUTFRAGCREATES]
&& entry->stats.columnAvail[IPSYSTEMSTATSTABLE_HCOUTDISCARDS]) {
U64 tmp, tmp2, tmp3;
tmp = entry->stats.HCOutRequests;
u64Incr(&tmp, &entry->stats.HCOutForwDatagrams);
u64Incr(&tmp, &entry->stats.HCOutFragCreates);
u64Subtract(&tmp, &entry->stats.HCOutFragReqds, &tmp2);
u64Subtract(&tmp2, &entry->stats.HCOutNoRoutes, &tmp3);
u64Subtract(&tmp3, &entry->stats.HCOutDiscards, &entry->stats.HCOutTransmits);
entry->stats.columnAvail[IPSYSTEMSTATSTABLE_HCOUTTRANSMITS] = 1;
}
}
/**
* Calculate stats
*
* @retval 0 : success
* @retval -1 : error
*/
int
netsnmp_access_interface_entry_calculate_stats(netsnmp_interface_entry *entry)
{
DEBUGMSGTL(("access:interface", "calculate_stats\n"));
if (entry->ns_flags & NETSNMP_INTERFACE_FLAGS_CALCULATE_UCAST) {
u64Subtract(&entry->stats.iall, &entry->stats.imcast,
&entry->stats.iucast);
}
return 0;
}
int
main(int argc, char *argv[])
{
netsnmp_session session, *ss;
netsnmp_pdu *pdu, *response;
netsnmp_variable_list *vars;
int arg;
char *gateway;
int count;
struct varInfo *vip;
u_int value = 0;
struct counter64 c64value;
float printvalue;
time_t last_time = 0;
time_t this_time;
time_t delta_time;
int sum; /* what the heck is this for, its never used? */
char filename[128] = { 0 };
struct timeval tv;
struct tm tm;
char timestring[64] = { 0 }, valueStr[64] = {
0}, maxStr[64] = {
0};
char outstr[256] = { 0 }, peakStr[64] = {
0};
int status;
int begin, end, last_end;
int print = 1;
int exit_code = 1;
SOCK_STARTUP;
switch (arg = snmp_parse_args(argc, argv, &session, "C:", &optProc)) {
case NETSNMP_PARSE_ARGS_ERROR:
goto out;
case NETSNMP_PARSE_ARGS_SUCCESS_EXIT:
exit_code = 0;
goto out;
case NETSNMP_PARSE_ARGS_ERROR_USAGE:
usage();
goto out;
default:
break;
}
gateway = session.peername;
for (; optind < argc; optind++) {
if (current_name >= MAX_ARGS) {
fprintf(stderr, "%s: Too many variables specified (max %d)\n",
argv[optind], MAX_ARGS);
goto out;
}
varinfo[current_name++].name = argv[optind];
}
if (current_name == 0) {
usage();
goto out;
}
if (dosum) {
if (current_name >= MAX_ARGS) {
fprintf(stderr, "Too many variables specified (max %d)\n",
MAX_ARGS);
goto out;
}
varinfo[current_name++].name = NULL;
}
/*
* open an SNMP session
*/
ss = snmp_open(&session);
if (ss == NULL) {
/*
* diagnose snmp_open errors with the input netsnmp_session pointer
*/
snmp_sess_perror("snmpdelta", &session);
goto out;
}
if (tableForm && timestamp) {
printf("%s", gateway);
}
for (count = 0; count < current_name; count++) {
vip = varinfo + count;
if (vip->name) {
vip->oidlen = MAX_OID_LEN;
vip->info_oid = (oid *) malloc(sizeof(oid) * vip->oidlen);
if (snmp_parse_oid(vip->name, vip->info_oid, &vip->oidlen) ==
NULL) {
snmp_perror(vip->name);
goto close_session;
}
sprint_descriptor(vip->descriptor, vip);
if (tableForm)
printf("\t%s", vip->descriptor);
} else {
vip->oidlen = 0;
strlcpy(vip->descriptor, SumFile, sizeof(vip->descriptor));
}
vip->value = 0;
zeroU64(&vip->c64value);
vip->time = 0;
vip->max = 0;
if (peaks) {
vip->peak_count = -1;
vip->peak = 0;
vip->peak_average = 0;
}
}
wait_for_period(period);
end = current_name;
sum = 0;
while (1) {
pdu = snmp_pdu_create(SNMP_MSG_GET);
if (deltat)
snmp_add_null_var(pdu, sysUpTimeOid, sysUpTimeLen);
if (end == current_name)
count = 0;
else
count = end;
begin = count;
for (; count < current_name
&& count < begin + varbindsPerPacket - deltat; count++) {
if (varinfo[count].oidlen)
snmp_add_null_var(pdu, varinfo[count].info_oid,
varinfo[count].oidlen);
}
last_end = end;
end = count;
retry:
status = snmp_synch_response(ss, pdu, &response);
if (status == STAT_SUCCESS) {
if (response->errstat == SNMP_ERR_NOERROR) {
if (timestamp) {
gettimeofday(&tv, (struct timezone *) 0);
memcpy(&tm, localtime((time_t *) & tv.tv_sec),
sizeof(tm));
if (((period % 60)
&& (!peaks || ((period * peaks) % 60)))
|| keepSeconds)
sprintf(timestring, " [%02d:%02d:%02d %d/%d]",
tm.tm_hour, tm.tm_min, tm.tm_sec,
tm.tm_mon + 1, tm.tm_mday);
else
sprintf(timestring, " [%02d:%02d %d/%d]",
tm.tm_hour, tm.tm_min,
tm.tm_mon + 1, tm.tm_mday);
}
vars = response->variables;
if (deltat) {
if (!vars || !vars->val.integer) {
fprintf(stderr, "Missing variable in reply\n");
continue;
} else {
this_time = *(vars->val.integer);
}
vars = vars->next_variable;
} else {
this_time = 1;
}
for (count = begin; count < end; count++) {
vip = varinfo + count;
if (vip->oidlen) {
if (!vars || !vars->val.integer) {
fprintf(stderr, "Missing variable in reply\n");
break;
}
vip->type = vars->type;
if (vars->type == ASN_COUNTER64) {
u64Subtract(vars->val.counter64,
&vip->c64value, &c64value);
memcpy(&vip->c64value, vars->val.counter64,
sizeof(struct counter64));
} else {
value = *(vars->val.integer) - vip->value;
vip->value = *(vars->val.integer);
}
vars = vars->next_variable;
} else {
value = sum;
sum = 0;
}
delta_time = this_time - vip->time;
if (delta_time <= 0)
delta_time = 100;
last_time = vip->time;
vip->time = this_time;
if (last_time == 0)
continue;
if (vip->oidlen && vip->type != ASN_COUNTER64) {
sum += value;
}
if (tableForm) {
if (count == begin) {
sprintf(outstr, "%s", timestring + 1);
} else {
outstr[0] = '\0';
}
} else {
sprintf(outstr, "%s %s", timestring,
vip->descriptor);
}
if (deltat || tableForm) {
if (vip->type == ASN_COUNTER64) {
fprintf(stderr,
"time delta and table form not supported for counter64s\n");
goto close_session;
} else {
printvalue =
((float) value * 100) / delta_time;
if (tableForm)
sprintf(valueStr, "\t%.2f", printvalue);
else
sprintf(valueStr, " /sec: %.2f",
printvalue);
}
} else {
printvalue = (float) value;
sprintf(valueStr, " /%d sec: ", period);
if (vip->type == ASN_COUNTER64)
printU64(valueStr + strlen(valueStr),
&c64value);
else
sprintf(valueStr + strlen(valueStr), "%u",
value);
}
if (!peaks) {
strcat(outstr, valueStr);
} else {
print = 0;
if (vip->peak_count == -1) {
if (wait_for_peak_start(period, peaks) == 0)
vip->peak_count = 0;
} else {
vip->peak_average += printvalue;
if (vip->peak < printvalue)
vip->peak = printvalue;
if (++vip->peak_count == peaks) {
if (deltat)
sprintf(peakStr,
" /sec: %.2f (%d sec Peak: %.2f)",
vip->peak_average /
vip->peak_count, period,
vip->peak);
else
sprintf(peakStr,
" /%d sec: %.0f (%d sec Peak: %.0f)",
period,
vip->peak_average /
vip->peak_count, period,
vip->peak);
vip->peak_average = 0;
vip->peak = 0;
vip->peak_count = 0;
print = 1;
strcat(outstr, peakStr);
}
}
}
if (printmax) {
if (printvalue > vip->max) {
vip->max = printvalue;
}
if (deltat)
sprintf(maxStr, " (Max: %.2f)", vip->max);
else
sprintf(maxStr, " (Max: %.0f)", vip->max);
strcat(outstr, maxStr);
}
if (print) {
if (fileout) {
sprintf(filename, "%s-%s", gateway,
vip->descriptor);
print_log(filename, outstr + 1);
} else {
if (tableForm)
printf("%s", outstr);
else
printf("%s\n", outstr + 1);
fflush(stdout);
}
}
}
if (end == last_end && tableForm)
printf("\n");
} else {
if (response->errstat == SNMP_ERR_TOOBIG) {
if (response->errindex <= varbindsPerPacket
&& response->errindex > 0) {
varbindsPerPacket = response->errindex - 1;
} else {
if (varbindsPerPacket > 30)
varbindsPerPacket -= 5;
else
varbindsPerPacket--;
}
if (varbindsPerPacket <= 0) {
exit_code = 5;
break;
}
end = last_end;
continue;
} else if (response->errindex != 0) {
fprintf(stderr, "Failed object: ");
for (count = 1, vars = response->variables;
vars && count != response->errindex;
vars = vars->next_variable, count++);
if (vars)
fprint_objid(stderr, vars->name,
vars->name_length);
fprintf(stderr, "\n");
/*
* Don't exit when OIDs from file are not found on agent
* exit_code = 1;
* break;
*/
} else {
fprintf(stderr, "Error in packet: %s\n",
snmp_errstring(response->errstat));
exit_code = 1;
break;
}
/*
* retry if the errored variable was successfully removed
*/
if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_APP_DONT_FIX_PDUS)) {
pdu = snmp_fix_pdu(response, SNMP_MSG_GET);
snmp_free_pdu(response);
response = NULL;
if (pdu != NULL)
goto retry;
}
}
} else if (status == STAT_TIMEOUT) {
fprintf(stderr, "Timeout: No Response from %s\n", gateway);
response = NULL;
exit_code = 1;
break;
} else { /* status == STAT_ERROR */
snmp_sess_perror("snmpdelta", ss);
response = NULL;
exit_code = 1;
break;
}
if (response)
snmp_free_pdu(response);
if (end == current_name) {
wait_for_period(period);
}
}
exit_code = 0;
close_session:
snmp_close(ss);
out:
SOCK_CLEANUP;
return (exit_code);
}
