check_sensors.cpp
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#include "check_sensors.h"
const char *servicename = (const char*)"SENSORS";
int getTemps(const std::string& sensorName, std::map<std::string, double>& temps) {
sensors_chip_name const * cn;
int c = 0;
while((cn = sensors_get_detected_chips(0, &c)) != 0) {
if(!strcmp(sensorName.c_str(), cn->prefix)) {
sensors_feature const *feat;
int f = 0;
while((feat = sensors_get_features(cn, &f)) != 0) {
std::string feature = feat->name;
if(starts_with(feature,"temp")) {
sensors_subfeature const *subf;
int s = 0;
while((subf = sensors_get_all_subfeatures(cn, feat, &s)) != 0) {
std::string subfeature = subf->name;
if(ends_with(subfeature,"_input")) {
double value;
if (subf->flags & SENSORS_MODE_R) {
int rc = sensors_get_value(cn, subf->number, &value);
if (rc < 0) {
return rc;
} else {
temps[feature] = value;
}
}
}
}
}
}
}
}
return 0;
}
int evalStatus(const std::string& sensorName, double warn, double crit, std::string& status) {
int ret = OK;
int rc;
std::map<std::string, double> temps;
status = sensorName;
if((rc = getTemps(sensorName, temps))) {
status = "Error retrieving temps from libsensors: " + int2str(rc);
return UNKN;
}
for(const std::pair<std::string, double>& entry : temps) {
std::string feature = entry.first;
double value = entry.second;
if(value > crit && ret != CRIT) {
ret = CRIT;
} else if(value > warn && ret == OK) {
ret = WARN;
}
status += " " + feature + ": " + double2str(value);
}
return ret;
}
void printVersion() {
std::cout << "check_sensors v" << VERSION << std::endl << std::endl;
}
void printHelp(bool longVersion) {
if(longVersion) {
printVersion();
std::cout << "Checks for pending, reallocated or uncorrectable sectors in disks using SMART" << std::endl << "WARNING: Requires the setuid bit to be set to run as root" << std::endl << std::endl;
printHelp(false);
std::cout << "Options:" << std::endl;
std::cout << " -h" << std::endl;
std::cout << " Print detailed help screen" << std::endl;
std::cout << " -V" << std::endl;
std::cout << " Print version information" << std::endl;
std::cout << " -w DOUBLE" << std::endl;
std::cout << " Warning temperature level" << std::endl;
std::cout << " -c DOUBLE" << std::endl;
std::cout << " Critical temperature level" << std::endl;
std::cout << " SENSORS" << std::endl;
std::cout << " sensor names to retrieve temperature data" << std::endl << std::endl;
return;
}
std::cout << "Usage: " << std::endl << "check_sensors [-hV] -w <temp> -c <temp> SENSORS..." << std::endl << std::endl;
}
void set_timeout(unsigned int sec) {
struct itimerval timer;
timer.it_value.tv_sec = sec;
timer.it_value.tv_usec = 0;
timer.it_interval.tv_sec = 0;
timer.it_interval.tv_usec = 0;
setitimer (ITIMER_VIRTUAL, &timer, 0);
struct sigaction sa;
memset (&sa, 0, sizeof (sa));
sa.sa_handler = &timer_handler;
sigaction (SIGVTALRM, &sa, 0);
}
int main(int argc, char **argv) {
set_timeout(10);
int c;
char *warningFlag = NULL;
char *criticalFlag = NULL;
while((c = getopt (argc, argv, "Vhw:c:")) != -1) {
switch(c) {
case 'h':
printHelp(true);
return OK;
case 'V':
printVersion();
return OK;
case 'w':
warningFlag = optarg;
break;
case 'c':
criticalFlag = optarg;
break;
case '?':
printHelp(false);
return UNKN;
}
}
if(warningFlag == NULL) {
std::cout << "Warning flag not specified" << std::endl;
return UNKN;
}
if(criticalFlag == NULL) {
std::cout << "Critical flag not specified" << std::endl;
return UNKN;
}
if(optind >= argc) {
std::cout << "No sensors to check" << std::endl;
return UNKN;
}
double warn = 0;
double crit = 0;
try {
warn = str2double(warningFlag);
crit = str2double(criticalFlag);
} catch(ConversionException e) {
std::cout << e.what() << std::endl;
return UNKN;
}
std::vector<std::string> results;
int returnCode = OK;
sensors_init(NULL);
for(int i = optind; i < argc; i++) {
std::string result;
switch(evalStatus(argv[i], warn, crit, result)) {
case OK:
break;
case WARN:
if(returnCode == OK) {returnCode = WARN;}
break;
case CRIT:
returnCode = CRIT;
break;
case UNKN:
returnCode = UNKN;
break;
}
results.push_back(result);
}
sensors_cleanup();
std::cout << servicename;
if(returnCode == OK) {std::cout << " OK - sensors: ";}
else if(returnCode == WARN) {std::cout << " WARNING - sensors: ";}
else if(returnCode == CRIT) {std::cout << " CRITICAL - sensors: ";}
else if(returnCode == UNKN) {std::cout << " UNKNOWN - sensors: ";}
for(int i = 0; i < (argc-1); i++) {
std::cout << results[i];
if(i != (argc-2)) {std::cout << ", ";}
}
std::cout << std::endl;
return returnCode;
}