remove source-dist branch

contrib/check_hltherm.c

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+/******************************************************************************************
+ *
+ * CHECK_HLTHERM.C
+ *
+ * Program: Hot Little Therm temperature plugin for Nagios
+ * License: GPL
+ * Copyright (c) 1999-2002 Ethan Galstad (nagios@nagios.org)
+ *
+ * Last Modified: 02-28-2002
+ *
+ * Command line: check_hltherm <probe> <wtemp> <ctemp> [-l label] [-s scale] [-lower]
+ *
+ * Description:
+ *
+ * This plugin checks the temperature of a given temperature probe on a
+ * Hot Little Therm digital thermometer.  The plugin uses the 'therm' utility
+ * that is included with the HLT software to check the probe temperature.  Both
+ * the HLT digital thermometer and software are produced by Spiderplant. See
+ * their website at http://www.spiderplant.com/hlt for more information.
+ *
+ *****************************************************************************************/
+
+#include "config.h"
+#include "common.h"
+#include "popen.h"
+
+#define DEFAULT_TIMEOUT         10	/* default timeout in seconds */
+
+#define HLTHERM_COMMAND          "/usr/local/bin/therm"     /* this should be moved out to the configure script */
+
+
+static void timeout_alarm_handler(int); /* author must provide */
+int process_arguments(int, char **);
+
+int timeout_interval=DEFAULT_TIMEOUT;
+
+double wtemp=0.0L;
+double ctemp=0.0L;
+
+int check_lower_temps=FALSE;
+
+char probe[MAX_INPUT_BUFFER]="";
+char label[MAX_INPUT_BUFFER]="Temperature";
+char scale[MAX_INPUT_BUFFER]="Degrees";
+
+FILE *fp;
+
+
+int main(int argc, char **argv){
+	int result=STATE_OK;
+	char command[MAX_INPUT_BUFFER];
+	double temp=0.0L;
+	char input_buffer[MAX_INPUT_BUFFER];
+	int found=0;
+
+	/* process command line arguments */
+	result=process_arguments(argc,argv);
+
+	/* display usage if there was a problem */
+	if(result==ERROR){
+		printf("Incorrect arguments supplied\n");
+		printf("\n");
+		printf("Hot Little Therm temperature plugin for Nagios\n");
+		printf("Copyright (c) 1999-2002 Ethan Galstad (nagios@nagios.org)\n");
+		printf("Last Modified: 02-28-2002\n");
+		printf("License: GPL\n");
+		printf("\n");
+		printf("Usage: %s <probe> <wtemp> <ctemp> [-l label] [-s scale] [-lower]\n",argv[0]);
+		printf("\n");
+		printf("Options:\n");
+		printf(" <wtemp>  = Temperature necessary to result in a WARNING state\n");
+		printf(" <ctemp>  = Temperature necessary to result in a CRITICAL state\n");
+		printf(" [label]  = A descriptive label for the probe.  Example: \"Outside Temp\"\n");
+		printf(" [scale]  = A descriptive label for the temperature scale.  Example: \"Celsius\"\n");
+		printf(" [-lower] = Evaluate temperatures with lower values being more critical\n");
+		printf("\n");
+		printf("This plugin checks the temperature of a given temperature probe on a\n");
+		printf("Hot Little Therm digital thermometer.  The plugin uses the 'therm' utility\n");
+		printf("included with the HLT software to check the probe temperature.  Both the\n");
+		printf("HLT digital thermometer and software are produced by Spiderplant. See\n");
+		printf("their website at http://www.spiderplant.com/hlt for more information.\n");
+		printf("\n");
+		return STATE_UNKNOWN;
+	        }
+
+
+	result=STATE_OK;
+
+	/* Set signal handling and alarm */
+	if(signal(SIGALRM,timeout_alarm_handler)==SIG_ERR){
+		printf("Cannot catch SIGALRM");
+		return STATE_UNKNOWN;
+	        }
+
+	/* handle timeouts gracefully */
+	alarm(timeout_interval);
+
+	/* create the command line we're going to use */
+	snprintf(command,sizeof(command),"%s %s",HLTHERM_COMMAND,probe);
+	command[sizeof(command)-1]='\x0';
+
+	/* run the command to check the temperature on the probe */
+	fp=spopen(command);
+	if(fp==NULL){
+		printf("Could not open pipe: %s\n",command);
+		return STATE_UNKNOWN;
+	        }
+
+	if(fgets(input_buffer,MAX_INPUT_BUFFER-1,fp)){
+		found=1;
+		temp=(double)atof(input_buffer);
+	        }
+
+	/* close the pipe */
+	spclose(fp);
+
+	if(result==STATE_OK){
+
+		if(found==0){
+			printf("Therm problem - Could not read program output\n");
+			result=STATE_CRITICAL;
+		        }
+		else{
+			if(check_lower_temps==TRUE){
+				if(temp<=ctemp)
+					result=STATE_CRITICAL;
+				else if(temp<=wtemp)
+				       result=STATE_WARNING;
+			        }
+			else{
+				if(temp>=ctemp)
+					result=STATE_CRITICAL;
+				else if(temp>=wtemp)
+					result=STATE_WARNING;
+			        }
+
+			printf("Therm %s: %s = %2.1f %s\n",(result==STATE_OK)?"ok":"problem",label,temp,scale);
+		        }
+	        }
+
+	return result;
+        }
+
+
+/* process command-line arguments */
+int process_arguments(int argc, char **argv){
+	int x;
+
+	/* not enough options were supplied */
+	if(argc<4)
+		return ERROR;
+
+	/* first option is always the probe name */
+	strncpy(probe,argv[1],sizeof(probe)-1);
+	probe[sizeof(probe)-1]='\x0';
+
+	/* 2nd and 3rd options are temperature thresholds */
+	wtemp=(double)atof(argv[2]);
+	ctemp=(double)atof(argv[3]);
+
+	/* process all remaining arguments */
+	for(x=5;x<=argc;x++){
+
+		/* we got the lower temperature option */
+		if(!strcmp(argv[x-1],"-lower"))
+			check_lower_temps=TRUE;
+
+		/* we got the label */
+		else if(!strcmp(argv[x-1],"-l")){
+			if(x<argc){
+				strncpy(label,argv[x],sizeof(label));
+				label[sizeof(label)-1]='\x0';
+				x++;
+			        }
+			else
+				return ERROR;
+		        }
+
+		/* we got the scale */
+		else if(!strcmp(argv[x-1],"-s")){
+			if(x<argc){
+				strncpy(scale,argv[x],sizeof(scale));
+				scale[sizeof(scale)-1]='\x0';
+				x++;
+			        }
+			else
+				return ERROR;
+		        }
+
+		/* else we got something else... */
+		else
+			return ERROR;
+	        }
+
+	return OK;
+        }
+
+
+
+/* handle timeouts gracefully... */
+static void timeout_alarm_handler(int signo){
+
+	if(signo==SIGALRM){
+    
+		kill(childpid[fileno(fp)],SIGKILL);
+		printf("Therm problem - Check timed out after %d seconds\n",timeout_interval);
+		exit(STATE_CRITICAL);
+	        }
+        }