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Adding mode for usage as nagios plugin #2

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Adding mode for usage as nagios plugin
topinet Apr 10, 2014
4ab1d11
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topinet Apr 10, 2014
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85 changes: 80 additions & 5 deletions src/pcsensor.c
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Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
/*
* pcsensor.c by Toni Garcia Navarro (c) 2014 (topi@elpiset.net)
* pcsensor.c by Philipp Adelt (c) 2012 (info@philipp.adelt.net)
* based on Juan Carlos Perez (c) 2011 (cray@isp-sl.com)
* based on Temper.c by Robert Kavaler (c) 2009 (relavak.com)
Expand Down Expand Up @@ -37,7 +38,7 @@
#include <string.h>
#include <errno.h>
#include <signal.h>
#include <limits.h>

#define VERSION "1.0.0"

Expand Down Expand Up @@ -65,6 +66,15 @@ static int seconds=5;
static int formato=0;
static int mrtg=0;
static int calibration=0;
static int nagios=0;
static int warning_min=INT_MIN;
static int critical_min=INT_MIN;
static int warning_max=INT_MAX;
static int critical_max=INT_MAX;
static char unit[]="C";
static char status[10]="UNKNOWN";
static int exit_code=3;
static int perfdata=0;


void bad(const char *why) {
Expand Down Expand Up @@ -320,7 +330,7 @@ int main( int argc, char **argv) {
time_t t;
int devicenum = 0;

while ((c = getopt (argc, argv, "mfcvhn:l::a:")) != -1)
while ((c = getopt (argc, argv, "mfcvhn:l::a:NW:C:p")) != -1)
switch (c)
{
case 'v':
Expand Down Expand Up @@ -364,10 +374,38 @@ int main( int argc, char **argv) {
} else {
break;
}
case 'N':
nagios=1;
break;
case 'W':
if (!sscanf(optarg,"%i:%i",&warning_min,&warning_max)==1) {
if (!sscanf(optarg,":%i",&warning_max)==1) {
fprintf (stderr, "Error: '%s' is not a valid warning range.\n", optarg);
exit(EXIT_FAILURE);
} else {
break;
}
} else {
break;
}
case 'C':
if (!sscanf(optarg,"%i:%i",&critical_min,&critical_max)==1) {
if (!sscanf(optarg,":%i",&critical_max)==1) {
fprintf (stderr, "Error: '%s' is not a valid critical range.\n", optarg);
exit(EXIT_FAILURE);
} else {
break;
}
} else {
break;
}
case 'p':
perfdata=1;
break;
case '?':
case 'h':
printf("pcsensor version %s\n",VERSION);
printf(" Aviable options:\n");
printf(" Available options:\n");
printf(" -h help\n");
printf(" -v verbose\n");
printf(" -n[i] use device number i (0 is the first one found on the bus)\n");
Expand All @@ -376,7 +414,11 @@ int main( int argc, char **argv) {
printf(" -f output only in Fahrenheit\n");
printf(" -a[n] increase or decrease temperature in 'n' degrees for device calibration\n");
printf(" -m output for mrtg integration\n");

printf(" -N output as Nagios plugin\n");
printf(" -W specify warning range for Nagios plugin output\n");
printf(" -C specify critical range for Nagios plugin output\n");
printf(" -p output performance data for Nagios plugin output\n");

exit(EXIT_FAILURE);
default:
if (isprint (optopt))
Expand All @@ -393,6 +435,11 @@ int main( int argc, char **argv) {
exit(EXIT_FAILURE);
}

if (warning_min < critical_min || warning_max > critical_max) {
fprintf(stderr, "Bad warning or critical ranges (warning range must be included inside critical range).\n");
exit(EXIT_FAILURE);
}

if ((lvr_winusb = setup_libusb_access(devicenum)) == NULL) {
exit(EXIT_FAILURE);
}
Expand Down Expand Up @@ -421,6 +468,7 @@ int main( int argc, char **argv) {
local = localtime(&t);

if (mrtg) {
exit_code=0;
if (formato==2) {
printf("%.2f\n", (9.0 / 5.0 * tempc + 32.0));
printf("%.2f\n", (9.0 / 5.0 * tempc + 32.0));
Expand All @@ -434,7 +482,34 @@ int main( int argc, char **argv) {
local->tm_min);

printf("pcsensor\n");
} else if (nagios) {
if (formato==2) {
tempc = 9.0 / 5.0 * tempc + 32.0;
strncpy(unit, "F", sizeof(unit));
} else if (formato==1) {
strncpy(unit, "C", sizeof(unit));
} else {
strncpy(unit, "C", sizeof(unit));
}

if (tempc < critical_min || tempc > critical_max) {
strncpy(status, "CRITICAL", sizeof(status));
exit_code=2;
} else if (tempc < warning_min || tempc > warning_max) {
strncpy(status, "WARNING", sizeof(status));
exit_code=1;
} else {
strncpy(status, "OK", sizeof(status));
exit_code=0;
}

if (perfdata) {
printf("%s - Temperature %.2f%s | temp=%.2f%s;%i:%i;%i:%i\n", status, tempc, unit, tempc, unit, warning_min, warning_max, critical_min, critical_max);
} else {
printf("%s - Temperature %.2f%s\n", status, tempc, unit);
}
} else {
exit_code=0;
printf("%04d/%02d/%02d %02d:%02d:%02d ",
local->tm_year +1900,
local->tm_mon + 1,
Expand All @@ -461,5 +536,5 @@ int main( int argc, char **argv) {

usb_close(lvr_winusb);

return 0;
return exit_code;
}