/* this function gets called when the module is loaded by the event broker */
int nebmodule_init(int flags, char *args, nebmodule *handle) {
char temp_buffer[1024];
time_t current_time;
unsigned long interval;
/* save our handle */
helloworld_module_handle = handle;
/* set some info - this is completely optional, as Nagios doesn't do anything with this data */
neb_set_module_info(helloworld_module_handle, NEBMODULE_MODINFO_TITLE, "helloworld");
neb_set_module_info(helloworld_module_handle, NEBMODULE_MODINFO_AUTHOR, "Ethan Galstad");
neb_set_module_info(helloworld_module_handle, NEBMODULE_MODINFO_TITLE, "Copyright (c) 2003-2007 Ethan Galstad");
neb_set_module_info(helloworld_module_handle, NEBMODULE_MODINFO_VERSION, "noversion");
neb_set_module_info(helloworld_module_handle, NEBMODULE_MODINFO_LICENSE, "GPL v2");
neb_set_module_info(helloworld_module_handle, NEBMODULE_MODINFO_DESC, "A simple example to get you started with Nagios Event Broker (NEB) modules.");
/* log module info to the Nagios log file */
write_to_all_logs("helloworld: Copyright (c) 2003-2007 Ethan Galstad ([email protected])", NSLOG_INFO_MESSAGE);
/* log a message to the Nagios log file */
snprintf(temp_buffer, sizeof(temp_buffer) - 1, "helloworld: Hello world!\n");
temp_buffer[sizeof(temp_buffer)-1] = '\x0';
write_to_all_logs(temp_buffer, NSLOG_INFO_MESSAGE);
/* log a reminder message every 15 minutes (how's that for annoying? :-)) */
time(¤t_time);
interval = 900;
schedule_new_event(EVENT_USER_FUNCTION, TRUE, current_time + interval, TRUE, interval, NULL, TRUE, (void *)helloworld_reminder_message, "How about you?", 0);
/* register to be notified of certain events... */
neb_register_callback(NEBCALLBACK_AGGREGATED_STATUS_DATA, helloworld_module_handle, 0, helloworld_handle_data);
return 0;
}
/* process all config vars in a file */
int npcdmod_process_config_file(char *filename) {
pnp_mmapfile *thefile = NULL;
char *buf = NULL;
char temp_buffer[1024];
int result = OK;
/* open the file */
if ((thefile = pnp_mmap_fopen(filename)) == NULL) {
snprintf(temp_buffer, sizeof(temp_buffer) - 1,
"npcdmod ERROR: failed to open %s\n", filename);
temp_buffer[sizeof(temp_buffer) - 1] = '\x0';
write_to_all_logs(temp_buffer, NSLOG_INFO_MESSAGE);
return ERROR;
} else {
snprintf(temp_buffer, sizeof(temp_buffer) - 1,
"npcdmod: %s initialized\n", filename);
temp_buffer[sizeof(temp_buffer) - 1] = '\x0';
write_to_all_logs(temp_buffer, NSLOG_INFO_MESSAGE);
}
/* process each line of the file */
while ((buf = pnp_mmap_fgets(thefile))) {
/* skip comments */
if (buf[0] == '#') {
free(buf);
continue;
}
/* skip blank lines */
if (!strcmp(buf, "")) {
free(buf);
continue;
}
/* skip new lines */
if (!strcmp(buf, "\n")) {
free(buf);
continue;
}
/* process the variable */
result = npcdmod_process_config_var(buf);
/* free memory */
free(buf);
if (result != OK)
break;
}
/* close the file */
pnp_mmap_fclose(thefile);
return result;
}
/* gets called every X seconds by an event in the scheduling queue */
void npcdmod_file_roller() {
char temp_buffer[1024];
char spool_file[1024];
int result = 0;
time_t current_time;
time(¤t_time);
sprintf(spool_file, "%s%s.%d", spool_dir, perfdata_spool_filename, current_time);
spool_file[sizeof(spool_file) - 1] = '\x0';
/* close actual file */
fclose(fp);
/* move the original file */
result = my_rename(perfdata_file, spool_file);
/* open a new file */
if ((fp = fopen(perfdata_file, "a")) == NULL) {
snprintf(temp_buffer, sizeof(temp_buffer) - 1,
"npcdmod: Could not reopen file. %s", strerror(errno),
NSLOG_INFO_MESSAGE);
temp_buffer[sizeof(temp_buffer) - 1] = '\x0';
write_to_all_logs(temp_buffer, NSLOG_INFO_MESSAGE);
}
return;
}
/* write something to the log file, syslog, and possibly the console */
static void write_to_logs_and_console(char *buffer, unsigned long data_type, int display) {
register int len = 0;
register int x = 0;
/* strip unnecessary newlines */
len = strlen(buffer);
for(x = len - 1; x >= 0; x--) {
if(buffer[x] == '\n')
buffer[x] = '\x0';
else
break;
}
/* write messages to the logs */
write_to_all_logs(buffer, data_type);
/* write message to the console */
if(display == TRUE) {
/* don't display warnings if we're just testing scheduling */
if(test_scheduling == TRUE && data_type == NSLOG_VERIFICATION_WARNING)
return;
write_to_console(buffer);
}
}
/* write a service problem/recovery to the nagios log file */
int log_service_event(service *svc) {
char *temp_buffer = NULL;
unsigned long log_options = 0L;
host *temp_host = NULL;
/* don't log soft errors if the user doesn't want to */
if(svc->state_type == SOFT_STATE && !log_service_retries)
return OK;
/* get the log options */
if(svc->current_state == STATE_UNKNOWN)
log_options = NSLOG_SERVICE_UNKNOWN;
else if(svc->current_state == STATE_WARNING)
log_options = NSLOG_SERVICE_WARNING;
else if(svc->current_state == STATE_CRITICAL)
log_options = NSLOG_SERVICE_CRITICAL;
else
log_options = NSLOG_SERVICE_OK;
/* find the associated host */
if((temp_host = svc->host_ptr) == NULL)
return ERROR;
asprintf(&temp_buffer, "SERVICE ALERT: %s;%s;%s;%s;%d;%s\n",
svc->host_name, svc->description,
service_state_name(svc->current_state),
state_type_name(svc->state_type),
svc->current_attempt,
(svc->plugin_output == NULL) ? "" : svc->plugin_output);
write_to_all_logs(temp_buffer, log_options);
free(temp_buffer);
return OK;
}
/* write a host problem/recovery to the log file */
int log_host_event(host *hst){
char *temp_buffer=NULL;
char *processed_buffer=NULL;
unsigned long log_options=0L;
/* grab the host macros */
clear_volatile_macros();
grab_host_macros(hst);
/* get the log options */
if(hst->current_state==HOST_DOWN)
log_options=NSLOG_HOST_DOWN;
else if(hst->current_state==HOST_UNREACHABLE)
log_options=NSLOG_HOST_UNREACHABLE;
else
log_options=NSLOG_HOST_UP;
asprintf(&temp_buffer,"HOST ALERT: %s;$HOSTSTATE$;$HOSTSTATETYPE$;$HOSTATTEMPT$;%s\n",hst->name,(hst->plugin_output==NULL)?"":hst->plugin_output);
process_macros(temp_buffer,&processed_buffer,0);
write_to_all_logs(processed_buffer,log_options);
my_free(temp_buffer);
my_free(processed_buffer);
return OK;
}
/* handle data from Nagios daemon */
int helloworld_handle_data(int event_type, void *data) {
nebstruct_aggregated_status_data *agsdata = NULL;
char temp_buffer[1024];
/* what type of event/data do we have? */
switch(event_type) {
case NEBCALLBACK_AGGREGATED_STATUS_DATA:
/* an aggregated status data dump just started or ended... */
if((agsdata = (nebstruct_aggregated_status_data *)data)) {
/* log a message to the Nagios log file */
snprintf(temp_buffer, sizeof(temp_buffer) - 1, "helloworld: An aggregated status update just %s.", (agsdata->type == NEBTYPE_AGGREGATEDSTATUS_STARTDUMP) ? "started" : "finished");
temp_buffer[sizeof(temp_buffer)-1] = '\x0';
write_to_all_logs(temp_buffer, NSLOG_INFO_MESSAGE);
}
break;
default:
break;
}
return 0;
}
/* write a host problem/recovery to the log file */
int log_host_event(host *hst) {
char *temp_buffer = NULL;
unsigned long log_options = 0L;
/* get the log options */
if(hst->current_state == HOST_DOWN)
log_options = NSLOG_HOST_DOWN;
else if(hst->current_state == HOST_UNREACHABLE)
log_options = NSLOG_HOST_UNREACHABLE;
else
log_options = NSLOG_HOST_UP;
asprintf(&temp_buffer, "HOST ALERT: %s;%s;%s;%d;%s\n",
hst->name,
host_state_name(hst->current_state),
state_type_name(hst->state_type),
hst->current_attempt,
(hst->plugin_output == NULL) ? "" : hst->plugin_output);
write_to_all_logs(temp_buffer, log_options);
my_free(temp_buffer);
return OK;
}
void logger(int priority, const char *loginfo, ...)
{
va_list ap;
va_start(ap, loginfo);
/* Only the main process may use the Nagios log methods */
if (!g_logfile || g_mainthread_id == pthread_self()) {
char buffer[8192];
snprintf(buffer, 20, "livestatus: ");
vsnprintf(buffer + strlen(buffer), sizeof(buffer) - strlen(buffer),
loginfo, ap);
write_to_all_logs(buffer, priority);
}
else {
if (g_logfile) {
/* write date/time */
char timestring[64];
time_t now_t = time(0);
struct tm now;
localtime_r(&now_t, &now);
strftime(timestring, 64, "%F %T ", &now);
fputs(timestring, g_logfile);
/* write log message */
vfprintf(g_logfile, loginfo, ap);
fputc('\n', g_logfile);
fflush(g_logfile);
}
}
va_end(ap);
}
/* writes a string to Nagios logs */
int altinity_set_initial_state_write_to_logs(char *buf, int flags){
if(buf==NULL)
return NDO_ERROR;
return write_to_all_logs(buf,flags);
}
/* gets called every X minutes by an event in the scheduling queue */
void helloworld_reminder_message(char *message) {
char temp_buffer[1024];
/* log a message to the Nagios log file */
snprintf(temp_buffer, sizeof(temp_buffer) - 1, "helloworld: I'm still here! %s", message);
temp_buffer[sizeof(temp_buffer)-1] = '\x0';
write_to_all_logs(temp_buffer, NSLOG_INFO_MESSAGE);
return;
}
int open_sock(){
int tosocket; /* the socket descriptor*/
char temp_buffer[BUFFER];
/* description of struct sockaddr_in is mentioned in netinet/in.h */
struct sockaddr_in toaddr; /* store address of server here */
/* create tcp socket */
tosocket = socket(PF_INET,SOCK_STREAM,0);
if(tosocket == -1){
snprintf(temp_buffer,sizeof(temp_buffer)-1,"modpnpsender: Unable to create socket. Aborting...\n");
temp_buffer[sizeof(temp_buffer)-1]='\x0';
write_to_all_logs(temp_buffer,NSLOG_INFO_MESSAGE);
return(-1);
}
/* else {
snprintf(temp_buffer,sizeof(temp_buffer)-1,"modpnpsender: Socket is OK....\n");
temp_buffer[sizeof(temp_buffer)-1]='\x0';
write_to_all_logs(temp_buffer,NSLOG_INFO_MESSAGE);
} */
/* define server address */
toaddr.sin_family = PF_INET;
toaddr.sin_addr.s_addr = inet_addr(serverip);
toaddr.sin_port = htons(serverport);
/* connect to server */
if(connect(tosocket, (struct sockaddr *)&toaddr, sizeof(toaddr)) == -1){
snprintf(temp_buffer,sizeof(temp_buffer)-1,"modpnpsender: Unable to connect to server '%s' on port %d. Aborting...\n", serverip, serverport);
temp_buffer[sizeof(temp_buffer)-1]='\x0';
write_to_all_logs(temp_buffer,NSLOG_INFO_MESSAGE);
// write_to_all_logs("modpnpsender: Connect failed... closing the socket...",NSLOG_INFO_MESSAGE);
close (tosocket);
// write_to_all_logs("modpnpsender: Socket closed...",NSLOG_INFO_MESSAGE);
return(-1);
}
else {
socket_status=OPEN;
return tosocket;
}
return (-1);
}
/* this function gets called when the module is loaded by the event broker */
int nebmodule_init(int flags, char *args, nebmodule *handle){
char temp_buffer[1024];
time_t current_time;
unsigned long interval;
/* save our handle */
modpnpsender_module_handle=handle;
/* log module info to the Nagios log file */
write_to_all_logs("modpnpsender: Copyright (c)2007 Hendrik Baecker ([email protected])",NSLOG_INFO_MESSAGE);
/* log a message to the Nagios log file */
snprintf(temp_buffer,sizeof(temp_buffer)-1,"modpnpsender: PNPSender module starting the engines!\n");
temp_buffer[sizeof(temp_buffer)-1]='\x0';
write_to_all_logs(temp_buffer,NSLOG_INFO_MESSAGE);
if(args == NULL) {
write_to_all_logs("modpnpsender: WARNING assuming '127.0.0.1' as destination IP Address)",NSLOG_INFO_MESSAGE);
}
else {
if((serverip = strtok_r(args, " ", &saveptr1))!=NULL){
serverip = serverip;
}
if((port = strtok_r(NULL, " ", &saveptr1))!=NULL){
serverport=atoi(port);
}
}
snprintf(temp_buffer,sizeof(temp_buffer)-1,"modpnpsender: Arguments are %s - %d",serverip,serverport);
temp_buffer[sizeof(temp_buffer)-1]='\x0';
write_to_all_logs(temp_buffer,NSLOG_INFO_MESSAGE);
/* register to be notified of certain events... */
neb_register_callback(NEBCALLBACK_SERVICE_CHECK_DATA,modpnpsender_module_handle,0,modpnpsender_handle_data);
return 0;
}
/* this function gets called when the module is unloaded by the event broker */
int nebmodule_deinit(int flags, int reason) {
char temp_buffer[1024];
/* deregister for all events we previously registered for... */
neb_deregister_callback(NEBCALLBACK_AGGREGATED_STATUS_DATA, helloworld_handle_data);
/* log a message to the Nagios log file */
snprintf(temp_buffer, sizeof(temp_buffer) - 1, "helloworld: Goodbye world!\n");
temp_buffer[sizeof(temp_buffer)-1] = '\x0';
write_to_all_logs(temp_buffer, NSLOG_INFO_MESSAGE);
return 0;
}
/* this function gets called when the module is unloaded by the event broker */
int nebmodule_deinit(int flags, int reason){
char temp_buffer[1024];
/* deregister for all events we previously registered for... */
neb_deregister_callback(NEBCALLBACK_SERVICE_CHECK_DATA,modpnpsender_handle_data);
/* log a message to the Nagios log file */
snprintf(temp_buffer,sizeof(temp_buffer)-1,"modpnpsender: Exiting - Thanks for for the flight!\n");
temp_buffer[sizeof(temp_buffer)-1]='\x0';
write_to_all_logs(temp_buffer,NSLOG_INFO_MESSAGE);
return 0;
}
/* handle data from Nagios daemon */
int modpnpsender_handle_data(int event_type, void *data){
nebstruct_service_check_data *scdata=NULL;
char temp_buffer[1024];
/* what type of event/data do we have? */
switch(event_type){
case NEBCALLBACK_SERVICE_CHECK_DATA:
/* a service check event occurs */
if((scdata=(nebstruct_service_check_data *)data)!=NULL){
if (scdata->type==NEBTYPE_SERVICECHECK_INITIATE) {
/* Check if this service check has performance data */
if (scdata->perf_data != NULL) {
snprintf(temp_buffer,sizeof(temp_buffer)-1,"modpnpsender: Processing PNP for %s / %s with perfdata %s",scdata->host_name,scdata->service_description,scdata->perf_data);
temp_buffer[sizeof(temp_buffer)-1]='\x0';
write_to_all_logs(temp_buffer,NSLOG_INFO_MESSAGE);
if(send_data(scdata)!=0) {
write_to_all_logs("modpnpsender: An error occured while sending data!",NSLOG_INFO_MESSAGE);
}
else {
write_to_all_logs("modpnpsender: Message sent - finish for now.",NSLOG_INFO_MESSAGE);
return 0;
}
}
}
}
break;
default:
break;
}
return 0;
}
/* this function gets called when the module is unloaded by the event broker */
int nebmodule_deinit(int flags, int reason) {
char temp_buffer[1024];
/* deregister for all events we previously registered for... */
neb_deregister_callback(NEBCALLBACK_HOST_CHECK_DATA,npcdmod_handle_data);
neb_deregister_callback(NEBCALLBACK_SERVICE_CHECK_DATA,npcdmod_handle_data);
/* log a message to the Nagios log file */
snprintf(temp_buffer, sizeof(temp_buffer) - 1,
"npcdmod: If you don't like me, I will go out! Bye.\n");
temp_buffer[sizeof(temp_buffer) - 1] = '\x0';
write_to_all_logs(temp_buffer, NSLOG_INFO_MESSAGE);
return 0;
}
void
n2a_logger (int priority, const char *loginfo, ...)
{
if (priority == 1 && g_options.log_level <= 0)
return;
else
priority = LG_INFO;
char buffer[8192];
snprintf (buffer, 20, "neb2amqp: ");
va_list ap;
va_start (ap, loginfo);
vsnprintf (buffer + strlen (buffer), sizeof (buffer) - strlen (buffer),
loginfo, ap);
va_end (ap);
write_to_all_logs (buffer, priority);
}
void n2a_logger (int priority, const char *loginfo, ...)
{
char *format = NULL;
char *buffer = NULL;
va_list ap;
if (priority != 1 || g_options.log_level > 0)
{
priority = LG_INFO;
}
asprintf (&format, "neb2amqp: %s", loginfo);
va_start (ap, loginfo);
vasprintf (&buffer, format, ap);
va_end (ap);
write_to_all_logs (buffer, priority);
}
/* gets one line of input from an mmap()'ed file */
char *pnp_mmap_fgets(pnp_mmapfile *temp_mmapfile) {
char *buf = NULL;
unsigned long x = 0L;
int len = 0;
if (temp_mmapfile == NULL)
return NULL;
/* we've reached the end of the file */
if (temp_mmapfile->current_position >= temp_mmapfile->file_size)
return NULL;
/* find the end of the string (or buffer) */
for (x = temp_mmapfile->current_position; x < temp_mmapfile->file_size; x++) {
if (*((char *) (temp_mmapfile->mmap_buf) + x) == '\n') {
x++;
break;
}
}
/* calculate length of line we just read */
len = (int) (x - temp_mmapfile->current_position);
/* allocate memory for the new line */
if ((buf = (char *) malloc(len + 1)) == NULL) {
write_to_all_logs("could not allocate a new buf", NSLOG_INFO_MESSAGE);
return NULL;
}
/* copy string to newly allocated memory and terminate the string */
memcpy(buf, ((char *) (temp_mmapfile->mmap_buf)
+ temp_mmapfile->current_position), len);
buf[len] = '\x0';
/* update the current position */
temp_mmapfile->current_position = x;
/* increment the current line */
temp_mmapfile->current_line++;
return buf;
}
/* write a service problem/recovery to the nagios log file */
int log_service_event(service *svc){
char *temp_buffer=NULL;
char *processed_buffer=NULL;
unsigned long log_options=0L;
host *temp_host=NULL;
/* don't log soft errors if the user doesn't want to */
if(svc->state_type==SOFT_STATE && !log_service_retries)
return OK;
/* get the log options */
if(svc->current_state==STATE_UNKNOWN)
log_options=NSLOG_SERVICE_UNKNOWN;
else if(svc->current_state==STATE_WARNING)
log_options=NSLOG_SERVICE_WARNING;
else if(svc->current_state==STATE_CRITICAL)
log_options=NSLOG_SERVICE_CRITICAL;
else
log_options=NSLOG_SERVICE_OK;
/* find the associated host */
if((temp_host=svc->host_ptr)==NULL)
return ERROR;
/* grab service macros */
clear_volatile_macros();
grab_host_macros(temp_host);
grab_service_macros(svc);
asprintf(&temp_buffer,"SERVICE ALERT: %s;%s;$SERVICESTATE$;$SERVICESTATETYPE$;$SERVICEATTEMPT$;%s\n",svc->host_name,svc->description,(svc->plugin_output==NULL)?"":svc->plugin_output);
process_macros(temp_buffer,&processed_buffer,0);
write_to_all_logs(processed_buffer,log_options);
my_free(temp_buffer);
my_free(processed_buffer);
return OK;
}
/* write a host problem/recovery to the log file */
int log_host_event(host *hst) {
char *temp_buffer = NULL;
unsigned long log_options = 0L;
/* get the log options */
if (hst->current_state == HOST_DOWN)
log_options = NSLOG_HOST_DOWN;
else if (hst->current_state == HOST_UNREACHABLE)
log_options = NSLOG_HOST_UNREACHABLE;
else
log_options = NSLOG_HOST_UP;
/* either log only the output, or if enabled, add long_output */
if (log_long_plugin_output == TRUE && hst->long_plugin_output != NULL) {
dummy = asprintf(&temp_buffer, "HOST ALERT: %s;%s;%s;%d;%s\\n%s\n",
hst->name,
host_state_name(hst->current_state),
state_type_name(hst->state_type),
hst->current_attempt,
(hst->plugin_output == NULL) ? "" : hst->plugin_output,
hst->long_plugin_output
);
} else {
dummy = asprintf(&temp_buffer, "HOST ALERT: %s;%s;%s;%d;%s\n",
hst->name,
host_state_name(hst->current_state),
state_type_name(hst->state_type),
hst->current_attempt,
(hst->plugin_output == NULL) ? "" : hst->plugin_output
);
}
write_to_all_logs(temp_buffer, log_options);
my_free(temp_buffer);
return OK;
}
/* core log wrapper */
void write_core_log(char *data) {
write_to_all_logs( data, NSLOG_INFO_MESSAGE );
return;
}
int main(int argc, char **argv, char **env) {
int result;
int error = FALSE;
char *buffer = NULL;
int display_license = FALSE;
int display_help = FALSE;
int c = 0;
struct tm *tm, tm_s;
time_t now;
char datestring[256];
nagios_macros *mac;
const char *worker_socket = NULL;
int i;
#ifdef HAVE_GETOPT_H
int option_index = 0;
static struct option long_options[] = {
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'V'},
{"license", no_argument, 0, 'V'},
{"verify-config", no_argument, 0, 'v'},
{"daemon", no_argument, 0, 'd'},
{"test-scheduling", no_argument, 0, 's'},
{"precache-objects", no_argument, 0, 'p'},
{"use-precached-objects", no_argument, 0, 'u'},
{"enable-timing-point", no_argument, 0, 'T'},
{"worker", required_argument, 0, 'W'},
{0, 0, 0, 0}
};
#define getopt(argc, argv, o) getopt_long(argc, argv, o, long_options, &option_index)
#endif
memset(&loadctl, 0, sizeof(loadctl));
mac = get_global_macros();
/* make sure we have the correct number of command line arguments */
if(argc < 2)
error = TRUE;
/* get all command line arguments */
while(1) {
c = getopt(argc, argv, "+hVvdspuxTW");
if(c == -1 || c == EOF)
break;
switch(c) {
case '?': /* usage */
case 'h':
display_help = TRUE;
break;
case 'V': /* version */
display_license = TRUE;
break;
case 'v': /* verify */
verify_config++;
break;
case 's': /* scheduling check */
test_scheduling = TRUE;
break;
case 'd': /* daemon mode */
daemon_mode = TRUE;
break;
case 'p': /* precache object config */
precache_objects = TRUE;
break;
case 'u': /* use precached object config */
use_precached_objects = TRUE;
break;
case 'T':
enable_timing_point = TRUE;
break;
case 'W':
worker_socket = optarg;
break;
case 'x':
printf("Warning: -x is deprecated and will be removed\n");
break;
default:
break;
}
}
#ifdef DEBUG_MEMORY
mtrace();
#endif
/* if we're a worker we can skip everything below */
if(worker_socket) {
exit(nagios_core_worker(worker_socket));
}
if(daemon_mode == FALSE) {
printf("\nNagios Core %s\n", PROGRAM_VERSION);
printf("Copyright (c) 2009-present Nagios Core Development Team and Community Contributors\n");
printf("Copyright (c) 1999-2009 Ethan Galstad\n");
printf("Last Modified: %s\n", PROGRAM_MODIFICATION_DATE);
printf("License: GPL\n\n");
printf("Website: http://www.nagios.org\n");
}
/* just display the license */
if(display_license == TRUE) {
printf("This program is free software; you can redistribute it and/or modify\n");
printf("it under the terms of the GNU General Public License version 2 as\n");
printf("published by the Free Software Foundation.\n\n");
printf("This program is distributed in the hope that it will be useful,\n");
printf("but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
printf("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n");
printf("GNU General Public License for more details.\n\n");
printf("You should have received a copy of the GNU General Public License\n");
printf("along with this program; if not, write to the Free Software\n");
printf("Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.\n\n");
exit(OK);
}
/* make sure we got the main config file on the command line... */
if(optind >= argc)
error = TRUE;
/* if there are no command line options (or if we encountered an error), print usage */
if(error == TRUE || display_help == TRUE) {
printf("Usage: %s [options] <main_config_file>\n", argv[0]);
printf("\n");
printf("Options:\n");
printf("\n");
printf(" -v, --verify-config Verify all configuration data (-v -v for more info)\n");
printf(" -s, --test-scheduling Shows projected/recommended check scheduling and other\n");
printf(" diagnostic info based on the current configuration files.\n");
printf(" -T, --enable-timing-point Enable timed commentary on initialization\n");
printf(" -x, --dont-verify-paths Deprecated (Don't check for circular object paths)\n");
printf(" -p, --precache-objects Precache object configuration\n");
printf(" -u, --use-precached-objects Use precached object config file\n");
printf(" -d, --daemon Starts Nagios in daemon mode, instead of as a foreground process\n");
printf(" -W, --worker /path/to/socket Act as a worker for an already running daemon\n");
printf("\n");
printf("Visit the Nagios website at http://www.nagios.org/ for bug fixes, new\n");
printf("releases, online documentation, FAQs, information on subscribing to\n");
printf("the mailing lists, and commercial support options for Nagios.\n");
printf("\n");
exit(ERROR);
}
/*
* config file is last argument specified.
* Make sure it uses an absolute path
*/
config_file = nspath_absolute(argv[optind], NULL);
if(config_file == NULL) {
printf("Error allocating memory.\n");
exit(ERROR);
}
/* make sure the config file uses an absolute path */
buffer = strdup(config_file);
config_file_dir = strdup(dirname(buffer));
free(buffer);
/*
* let's go to town. We'll be noisy if we're verifying config
* or running scheduling tests.
*/
if(verify_config || test_scheduling || precache_objects) {
reset_variables();
/*
* if we don't beef up our resource limits as much as
* we can, it's quite possible we'll run headlong into
* EAGAIN due to too many processes when we try to
* drop privileges later.
*/
set_loadctl_defaults();
if(verify_config)
printf("Reading configuration data...\n");
/* read our config file */
result = read_main_config_file(config_file);
if(result != OK) {
printf(" Error processing main config file!\n\n");
exit(EXIT_FAILURE);
}
if(verify_config)
printf(" Read main config file okay...\n");
/* drop privileges */
if((result = drop_privileges(nagios_user, nagios_group)) == ERROR) {
printf(" Failed to drop privileges. Aborting.");
exit(EXIT_FAILURE);
}
/* read object config files */
result = read_all_object_data(config_file);
if(result != OK) {
printf(" Error processing object config files!\n\n");
/* if the config filename looks fishy, warn the user */
if(!strstr(config_file, "nagios.cfg")) {
printf("\n***> The name of the main configuration file looks suspicious...\n");
printf("\n");
printf(" Make sure you are specifying the name of the MAIN configuration file on\n");
printf(" the command line and not the name of another configuration file. The\n");
printf(" main configuration file is typically '%s'\n", DEFAULT_CONFIG_FILE);
}
printf("\n***> One or more problems was encountered while processing the config files...\n");
printf("\n");
printf(" Check your configuration file(s) to ensure that they contain valid\n");
printf(" directives and data defintions. If you are upgrading from a previous\n");
printf(" version of Nagios, you should be aware that some variables/definitions\n");
printf(" may have been removed or modified in this version. Make sure to read\n");
printf(" the HTML documentation regarding the config files, as well as the\n");
printf(" 'Whats New' section to find out what has changed.\n\n");
exit(EXIT_FAILURE);
}
if(verify_config) {
printf(" Read object config files okay...\n\n");
printf("Running pre-flight check on configuration data...\n\n");
}
/* run the pre-flight check to make sure things look okay... */
result = pre_flight_check();
if(result != OK) {
printf("\n***> One or more problems was encountered while running the pre-flight check...\n");
printf("\n");
printf(" Check your configuration file(s) to ensure that they contain valid\n");
printf(" directives and data defintions. If you are upgrading from a previous\n");
printf(" version of Nagios, you should be aware that some variables/definitions\n");
printf(" may have been removed or modified in this version. Make sure to read\n");
printf(" the HTML documentation regarding the config files, as well as the\n");
printf(" 'Whats New' section to find out what has changed.\n\n");
exit(EXIT_FAILURE);
}
if(verify_config) {
printf("\nThings look okay - No serious problems were detected during the pre-flight check\n");
}
/* scheduling tests need a bit more than config verifications */
if(test_scheduling == TRUE) {
/* we'll need the event queue here so we can time insertions */
init_event_queue();
timing_point("Done initializing event queue\n");
/* read initial service and host state information */
initialize_retention_data(config_file);
read_initial_state_information();
timing_point("Retention data and initial state parsed\n");
/* initialize the event timing loop */
init_timing_loop();
timing_point("Timing loop initialized\n");
/* display scheduling information */
display_scheduling_info();
}
if(precache_objects) {
result = fcache_objects(object_precache_file);
timing_point("Done precaching objects\n");
if(result == OK) {
printf("Object precache file created:\n%s\n", object_precache_file);
}
else {
printf("Failed to precache objects to '%s': %s\n", object_precache_file, strerror(errno));
}
}
/* clean up after ourselves */
cleanup();
/* exit */
timing_point("Exiting\n");
exit(result);
}
/* else start to monitor things... */
else {
/*
* if we're called with a relative path we must make
* it absolute so we can launch our workers.
* If not, we needn't bother, as we're using execvp()
*/
if (strchr(argv[0], '/')) {
nagios_binary_path = nspath_absolute(argv[0], NULL);
if (access(nagios_binary_path, X_OK) < 0) {
logit(NSLOG_RUNTIME_ERROR, TRUE, "Error: failed to access() %s: %s\n", nagios_binary_path, strerror(errno));
logit(NSLOG_RUNTIME_ERROR, TRUE, "Error: Spawning workers will be impossible. Aborting.\n");
exit(EXIT_FAILURE);
}
}
else {
nagios_binary_path = strdup(argv[0]);
}
nagios_iobs = iobroker_create();
/* keep monitoring things until we get a shutdown command */
do {
/* reset program variables */
reset_variables();
timing_point("Variables reset\n");
/* get PID */
nagios_pid = (int)getpid();
/* read in the configuration files (main and resource config files) */
result = read_main_config_file(config_file);
timing_point("Main config file read\n");
/* NOTE 11/06/07 EG moved to after we read config files, as user may have overridden timezone offset */
/* get program (re)start time and save as macro */
program_start = time(NULL);
my_free(mac->x[MACRO_PROCESSSTARTTIME]);
asprintf(&mac->x[MACRO_PROCESSSTARTTIME], "%lu", (unsigned long)program_start);
/* open debug log */
open_debug_log();
/* drop privileges */
if(drop_privileges(nagios_user, nagios_group) == ERROR) {
logit(NSLOG_PROCESS_INFO | NSLOG_RUNTIME_ERROR | NSLOG_CONFIG_ERROR, TRUE, "Failed to drop privileges. Aborting.");
cleanup();
exit(ERROR);
}
#ifdef USE_EVENT_BROKER
/* initialize modules */
neb_init_modules();
neb_init_callback_list();
#endif
timing_point("NEB module API initialized\n");
/* this must be logged after we read config data, as user may have changed location of main log file */
logit(NSLOG_PROCESS_INFO, TRUE, "Nagios %s starting... (PID=%d)\n", PROGRAM_VERSION, (int)getpid());
/* log the local time - may be different than clock time due to timezone offset */
now = time(NULL);
tm = localtime_r(&now, &tm_s);
strftime(datestring, sizeof(datestring), "%a %b %d %H:%M:%S %Z %Y", tm);
logit(NSLOG_PROCESS_INFO, TRUE, "Local time is %s", datestring);
/* write log version/info */
write_log_file_info(NULL);
/* handle signals (interrupts) before we do any socket I/O */
setup_sighandler();
/*
* Initialize query handler and event subscription service.
* This must be done before modules are initialized, so
* the modules can use our in-core stuff properly
*/
qh_init(qh_socket_path ? qh_socket_path : DEFAULT_QUERY_SOCKET);
timing_point("Query handler initialized\n");
nerd_init();
timing_point("NERD initialized\n");
/* initialize check workers */
if(init_workers(num_check_workers) < 0) {
logit(NSLOG_RUNTIME_ERROR, TRUE, "Failed to spawn workers. Aborting\n");
exit(EXIT_FAILURE);
}
timing_point("%u workers spawned\n", wproc_num_workers_spawned);
i = 0;
while (i < 50 && wproc_num_workers_online < wproc_num_workers_spawned) {
iobroker_poll(nagios_iobs, 50);
i++;
}
timing_point("%u workers connected\n", wproc_num_workers_online);
/* now that workers have arrived we can set the defaults */
set_loadctl_defaults();
#ifdef USE_EVENT_BROKER
/* load modules */
neb_load_all_modules();
timing_point("Modules loaded\n");
/* send program data to broker */
broker_program_state(NEBTYPE_PROCESS_PRELAUNCH, NEBFLAG_NONE, NEBATTR_NONE, NULL);
timing_point("First callback made\n");
#endif
/* read in all object config data */
if(result == OK)
result = read_all_object_data(config_file);
/* there was a problem reading the config files */
if(result != OK)
logit(NSLOG_PROCESS_INFO | NSLOG_RUNTIME_ERROR | NSLOG_CONFIG_ERROR, TRUE, "Bailing out due to one or more errors encountered in the configuration files. Run Nagios from the command line with the -v option to verify your config before restarting. (PID=%d)", (int)getpid());
else {
/* run the pre-flight check to make sure everything looks okay*/
if((result = pre_flight_check()) != OK)
logit(NSLOG_PROCESS_INFO | NSLOG_RUNTIME_ERROR | NSLOG_VERIFICATION_ERROR, TRUE, "Bailing out due to errors encountered while running the pre-flight check. Run Nagios from the command line with the -v option to verify your config before restarting. (PID=%d)\n", (int)getpid());
}
/* an error occurred that prevented us from (re)starting */
if(result != OK) {
/* if we were restarting, we need to cleanup from the previous run */
if(sigrestart == TRUE) {
/* clean up the status data */
cleanup_status_data(config_file, TRUE);
}
#ifdef USE_EVENT_BROKER
/* send program data to broker */
broker_program_state(NEBTYPE_PROCESS_SHUTDOWN, NEBFLAG_PROCESS_INITIATED, NEBATTR_SHUTDOWN_ABNORMAL, NULL);
#endif
cleanup();
exit(ERROR);
}
timing_point("Object configuration parsed and understood\n");
/* write the objects.cache file */
fcache_objects(object_cache_file);
timing_point("Objects cached\n");
init_event_queue();
timing_point("Event queue initialized\n");
#ifdef USE_EVENT_BROKER
/* send program data to broker */
broker_program_state(NEBTYPE_PROCESS_START, NEBFLAG_NONE, NEBATTR_NONE, NULL);
#endif
/* enter daemon mode (unless we're restarting...) */
if(daemon_mode == TRUE && sigrestart == FALSE) {
result = daemon_init();
/* we had an error daemonizing, so bail... */
if(result == ERROR) {
logit(NSLOG_PROCESS_INFO | NSLOG_RUNTIME_ERROR, TRUE, "Bailing out due to failure to daemonize. (PID=%d)", (int)getpid());
#ifdef USE_EVENT_BROKER
/* send program data to broker */
broker_program_state(NEBTYPE_PROCESS_SHUTDOWN, NEBFLAG_PROCESS_INITIATED, NEBATTR_SHUTDOWN_ABNORMAL, NULL);
#endif
cleanup();
exit(ERROR);
}
asprintf(&buffer, "Finished daemonizing... (New PID=%d)\n", (int)getpid());
write_to_all_logs(buffer, NSLOG_PROCESS_INFO);
my_free(buffer);
/* get new PID */
nagios_pid = (int)getpid();
}
/* initialize status data unless we're starting */
if(sigrestart == FALSE) {
initialize_status_data(config_file);
timing_point("Status data initialized\n");
}
/* read initial service and host state information */
initialize_retention_data(config_file);
timing_point("Retention data initialized\n");
read_initial_state_information();
timing_point("Initial state information read\n");
/* initialize comment data */
initialize_comment_data(config_file);
timing_point("Comment data initialized\n");
/* initialize scheduled downtime data */
initialize_downtime_data(config_file);
timing_point("Downtime data initialized\n");
/* initialize performance data */
initialize_performance_data(config_file);
timing_point("Performance data initialized\n");
/* initialize the event timing loop */
init_timing_loop();
timing_point("Event timing loop initialized\n");
/* initialize check statistics */
init_check_stats();
timing_point("check stats initialized\n");
/* check for updates */
check_for_nagios_updates(FALSE, TRUE);
timing_point("Update check concluded\n");
/* update all status data (with retained information) */
update_all_status_data();
timing_point("Status data updated\n");
/* log initial host and service state */
log_host_states(INITIAL_STATES, NULL);
log_service_states(INITIAL_STATES, NULL);
timing_point("Initial states logged\n");
/* reset the restart flag */
sigrestart = FALSE;
/* fire up command file worker */
launch_command_file_worker();
timing_point("Command file worker launched\n");
#ifdef USE_EVENT_BROKER
/* send program data to broker */
broker_program_state(NEBTYPE_PROCESS_EVENTLOOPSTART, NEBFLAG_NONE, NEBATTR_NONE, NULL);
#endif
/* get event start time and save as macro */
event_start = time(NULL);
my_free(mac->x[MACRO_EVENTSTARTTIME]);
asprintf(&mac->x[MACRO_EVENTSTARTTIME], "%lu", (unsigned long)event_start);
timing_point("Entering event execution loop\n");
/***** start monitoring all services *****/
/* (doesn't return until a restart or shutdown signal is encountered) */
event_execution_loop();
/* 03/01/2007 EG Moved from sighandler() to prevent FUTEX locking problems under NPTL */
/* 03/21/2007 EG SIGSEGV signals are still logged in sighandler() so we don't loose them */
/* did we catch a signal? */
if(caught_signal == TRUE) {
if(sig_id == SIGHUP)
logit(NSLOG_PROCESS_INFO, TRUE, "Caught SIGHUP, restarting...\n");
}
#ifdef USE_EVENT_BROKER
/* send program data to broker */
broker_program_state(NEBTYPE_PROCESS_EVENTLOOPEND, NEBFLAG_NONE, NEBATTR_NONE, NULL);
if(sigshutdown == TRUE)
broker_program_state(NEBTYPE_PROCESS_SHUTDOWN, NEBFLAG_USER_INITIATED, NEBATTR_SHUTDOWN_NORMAL, NULL);
else if(sigrestart == TRUE)
broker_program_state(NEBTYPE_PROCESS_RESTART, NEBFLAG_USER_INITIATED, NEBATTR_RESTART_NORMAL, NULL);
#endif
/* save service and host state information */
save_state_information(FALSE);
cleanup_retention_data(config_file);
/* clean up performance data */
cleanup_performance_data(config_file);
/* clean up the scheduled downtime data */
cleanup_downtime_data(config_file);
/* clean up the status data unless we're restarting */
if(sigrestart == FALSE) {
cleanup_status_data(config_file, TRUE);
}
/* shutdown stuff... */
if(sigshutdown == TRUE) {
free_worker_memory(WPROC_FORCE);
iobroker_destroy(nagios_iobs, IOBROKER_CLOSE_SOCKETS);
nagios_iobs = NULL;
/* make sure lock file has been removed - it may not have been if we received a shutdown command */
if(daemon_mode == TRUE)
unlink(lock_file);
/* log a shutdown message */
logit(NSLOG_PROCESS_INFO, TRUE, "Successfully shutdown... (PID=%d)\n", (int)getpid());
}
/* clean up after ourselves */
cleanup();
/* close debug log */
close_debug_log();
}
while(sigrestart == TRUE && sigshutdown == FALSE);
/* free misc memory */
my_free(config_file);
}
return OK;
}
int send_data(nebstruct_service_check_data *data){
char temp_buffer[1024];
char *message;
int socket;
int message_length = 1024;
char cmd[1024];
time_t t;
if (socket_status == CLOSE) {
socket = open_sock();
if (socket == -1) {
write_to_all_logs("modpnpsender: Arg! Socket is -1",NSLOG_INFO_MESSAGE);
return (-1);
}
}
if (!(message = (char *) malloc(message_length))) {
snprintf(temp_buffer,sizeof(temp_buffer)-1,"modpnpsender: cannot allocate memory for message. Aborting...\n");
temp_buffer[sizeof(temp_buffer)-1]='\x0';
write_to_all_logs(temp_buffer,NSLOG_INFO_MESSAGE);
return (-1);
}
bzero((void *)message, message_length);
strcat(message,"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n");
strcat(message,"<NAGIOS>\n<NAGIOS_DATATYPE>serviceperfdata</NAGIOS_DATATYPE>\n");
strcat(message,"<NAGIOS_HOSTNAME>");
strcat(message,data->host_name);
strcat(message,"</NAGIOS_HOSTNAME>\n");
strcat(message,"<NAGIOS_SERVICEDESC>");
strcat(message,data->service_description);
strcat(message,"</NAGIOS_SERVICEDESC>\n");
strcat(message,"<NAGIOS_SERVICEPERFDATA>");
strcat(message,data->perf_data);
strcat(message,"</NAGIOS_SERVICEPERFDATA>\n");
strcat(message,"<NAGIOS_SERVICECHECKCOMMAND>");
if (data->command_name != NULL) {
strcat(message,data->command_name);
}
strcat(message,"</NAGIOS_SERVICECHECKCOMMAND>\n");
strcat(message,"<NAGIOS_SERVICECHECKCOMMAND_ARGS>");
if (data->command_args != NULL) strcat(message,data->command_args);
strcat(message,"</NAGIOS_SERVICECHECKCOMMAND>\n");
strcat(message,"<NAGIOS_SERVICECHECKCOMMAND_LINE>");
if (data->command_line != NULL) strcat(message,data->command_line);
strcat(message,"</NAGIOS_SERVICECHECKCOMMAND>\n");
strcat(message,"<NAGIOS_SERVICEOUTPUT>");
if (data->output != NULL) strcat(message,data->output);
strcat(message,"</NAGIOS_SERVICEOUTPUT>\n");
time(&t);
snprintf(temp_buffer, sizeof(temp_buffer)-1,"%ld",t);
temp_buffer[sizeof(temp_buffer)-1]='\x0';
strcat(message,"<NAGIOS_TIMET>");
strcat(message, temp_buffer);
strcat(message,"</NAGIOS_TIMET>\n");
bzero((void *)temp_buffer,sizeof(temp_buffer)-1);
strcat(message,"</NAGIOS>\n");
if(send(socket, message, strlen(message), 0) == -1) {
snprintf(temp_buffer,sizeof(temp_buffer)-1,"modpnpsender: error while sending message to server. - %s\n",strerror(errno));
temp_buffer[sizeof(temp_buffer)-1]='\x0';
write_to_all_logs(temp_buffer,NSLOG_INFO_MESSAGE);
}
close (socket);
socket_status = CLOSE;
snprintf(temp_buffer,sizeof(temp_buffer)-1,"modpnpsender: Sending perfdata for %s / %s with perfdata %s",data->host_name,data->service_description,data->perf_data);
temp_buffer[sizeof(temp_buffer)-1]='\x0';
write_to_all_logs(temp_buffer,NSLOG_INFO_MESSAGE);
return 0;
}
/* Following main() declaration required by older versions of Perl ut 5.00503 */
int main(int argc, char **argv, char **env) {
int result;
int error = FALSE;
char *buffer = NULL;
int display_license = FALSE;
int display_help = FALSE;
int c = 0;
struct tm *tm, tm_s;
time_t now;
char datestring[256];
nagios_macros *mac;
mac = get_global_macros();
#ifdef HAVE_GETOPT_H
int option_index = 0;
static struct option long_options[] = {
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'V'},
{"license", no_argument, 0, 'V'},
{"verify-config", no_argument, 0, 'v'},
{"daemon", no_argument, 0, 'd'},
{"test-scheduling", no_argument, 0, 's'},
{"dont-verify-objects", no_argument, 0, 'o'},
{"dont-verify-paths", no_argument, 0, 'x'},
{"precache-objects", no_argument, 0, 'p'},
{"use-precached-objects", no_argument, 0, 'u'},
{0, 0, 0, 0}
};
#endif
/* make sure we have the correct number of command line arguments */
if(argc < 2)
error = TRUE;
/* get all command line arguments */
while(1) {
#ifdef HAVE_GETOPT_H
c = getopt_long(argc, argv, "+hVvdsoxpu", long_options, &option_index);
#else
c = getopt(argc, argv, "+hVvdsoxpu");
#endif
if(c == -1 || c == EOF)
break;
switch(c) {
case '?': /* usage */
case 'h':
display_help = TRUE;
break;
case 'V': /* version */
display_license = TRUE;
break;
case 'v': /* verify */
verify_config = TRUE;
break;
case 's': /* scheduling check */
test_scheduling = TRUE;
break;
case 'd': /* daemon mode */
daemon_mode = TRUE;
break;
case 'o': /* don't verify objects */
/*
verify_object_relationships=FALSE;
*/
break;
case 'x': /* don't verify circular paths */
verify_circular_paths = FALSE;
break;
case 'p': /* precache object config */
precache_objects = TRUE;
break;
case 'u': /* use precached object config */
use_precached_objects = TRUE;
break;
default:
break;
}
}
/* make sure we have the right combination of arguments */
if(precache_objects == TRUE && (test_scheduling == FALSE && verify_config == FALSE)) {
error = TRUE;
display_help = TRUE;
}
#ifdef DEBUG_MEMORY
mtrace();
#endif
if(daemon_mode == FALSE) {
printf("\nNagios Core %s\n", PROGRAM_VERSION);
printf("Copyright (c) 2009-2011 Nagios Core Development Team and Community Contributors\n");
printf("Copyright (c) 1999-2009 Ethan Galstad\n");
printf("Last Modified: %s\n", PROGRAM_MODIFICATION_DATE);
printf("License: GPL\n\n");
printf("Website: http://www.nagios.org\n");
}
/* just display the license */
if(display_license == TRUE) {
printf("This program is free software; you can redistribute it and/or modify\n");
printf("it under the terms of the GNU General Public License version 2 as\n");
printf("published by the Free Software Foundation.\n\n");
printf("This program is distributed in the hope that it will be useful,\n");
printf("but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
printf("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n");
printf("GNU General Public License for more details.\n\n");
printf("You should have received a copy of the GNU General Public License\n");
printf("along with this program; if not, write to the Free Software\n");
printf("Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.\n\n");
exit(OK);
}
/* make sure we got the main config file on the command line... */
if(optind >= argc)
error = TRUE;
/* if there are no command line options (or if we encountered an error), print usage */
if(error == TRUE || display_help == TRUE) {
printf("Usage: %s [options] <main_config_file>\n", argv[0]);
printf("\n");
printf("Options:\n");
printf("\n");
printf(" -v, --verify-config Verify all configuration data\n");
printf(" -s, --test-scheduling Shows projected/recommended check scheduling and other\n");
printf(" diagnostic info based on the current configuration files.\n");
/*printf(" -o, --dont-verify-objects Don't verify object relationships - USE WITH CAUTION!\n");*/
printf(" -x, --dont-verify-paths Don't check for circular object paths - USE WITH CAUTION!\n");
printf(" -p, --precache-objects Precache object configuration - use with -v or -s options\n");
printf(" -u, --use-precached-objects Use precached object config file\n");
printf(" -d, --daemon Starts Nagios in daemon mode, instead of as a foreground process\n");
printf("\n");
printf("Visit the Nagios website at http://www.nagios.org/ for bug fixes, new\n");
printf("releases, online documentation, FAQs, information on subscribing to\n");
printf("the mailing lists, and commercial support options for Nagios.\n");
printf("\n");
exit(ERROR);
}
/*
* Set the signal handler for the SIGXFSZ signal here because
* we may encounter this signal before the other signal handlers
* are set.
*/
signal(SIGXFSZ, handle_sigxfsz);
/* config file is last argument specified */
config_file = (char *)strdup(argv[optind]);
if(config_file == NULL) {
printf("Error allocating memory.\n");
exit(ERROR);
}
/* make sure the config file uses an absolute path */
if(config_file[0] != '/') {
/* save the name of the config file */
buffer = (char *)strdup(config_file);
/* reallocate a larger chunk of memory */
config_file = (char *)realloc(config_file, MAX_FILENAME_LENGTH);
if(config_file == NULL) {
printf("Error allocating memory.\n");
exit(ERROR);
}
/* get absolute path of current working directory */
getcwd(config_file, MAX_FILENAME_LENGTH);
/* append a forward slash */
strncat(config_file, "/", 1);
config_file[MAX_FILENAME_LENGTH - 1] = '\x0';
/* append the config file to the path */
strncat(config_file, buffer, MAX_FILENAME_LENGTH - strlen(config_file) - 1);
config_file[MAX_FILENAME_LENGTH - 1] = '\x0';
my_free(buffer);
}
/* we're just verifying the configuration... */
if(verify_config == TRUE) {
/* reset program variables */
reset_variables();
printf("Reading configuration data...\n");
/* read in the configuration files (main config file, resource and object config files) */
if((result = read_main_config_file(config_file)) == OK) {
printf(" Read main config file okay...\n");
/* drop privileges */
if((result = drop_privileges(nagios_user, nagios_group)) == ERROR)
printf(" Failed to drop privileges. Aborting.");
else {
/* read object config files */
if((result = read_all_object_data(config_file)) == OK)
printf(" Read object config files okay...\n");
else
printf(" Error processing object config files!\n");
}
}
else
printf(" Error processing main config file!\n\n");
printf("\n");
/* there was a problem reading the config files */
if(result != OK) {
/* if the config filename looks fishy, warn the user */
if(!strstr(config_file, "nagios.cfg")) {
printf("\n***> The name of the main configuration file looks suspicious...\n");
printf("\n");
printf(" Make sure you are specifying the name of the MAIN configuration file on\n");
printf(" the command line and not the name of another configuration file. The\n");
printf(" main configuration file is typically '/usr/local/nagios/etc/nagios.cfg'\n");
}
printf("\n***> One or more problems was encountered while processing the config files...\n");
printf("\n");
printf(" Check your configuration file(s) to ensure that they contain valid\n");
printf(" directives and data defintions. If you are upgrading from a previous\n");
printf(" version of Nagios, you should be aware that some variables/definitions\n");
printf(" may have been removed or modified in this version. Make sure to read\n");
printf(" the HTML documentation regarding the config files, as well as the\n");
printf(" 'Whats New' section to find out what has changed.\n\n");
}
/* the config files were okay, so run the pre-flight check */
else {
printf("Running pre-flight check on configuration data...\n\n");
/* run the pre-flight check to make sure things look okay... */
result = pre_flight_check();
if(result == OK)
printf("\nThings look okay - No serious problems were detected during the pre-flight check\n");
else {
printf("\n***> One or more problems was encountered while running the pre-flight check...\n");
printf("\n");
printf(" Check your configuration file(s) to ensure that they contain valid\n");
printf(" directives and data defintions. If you are upgrading from a previous\n");
printf(" version of Nagios, you should be aware that some variables/definitions\n");
printf(" may have been removed or modified in this version. Make sure to read\n");
printf(" the HTML documentation regarding the config files, as well as the\n");
printf(" 'Whats New' section to find out what has changed.\n\n");
}
}
/* clean up after ourselves */
cleanup();
/* free config_file */
my_free(config_file);
/* exit */
exit(result);
}
/* we're just testing scheduling... */
else if(test_scheduling == TRUE) {
/* reset program variables */
reset_variables();
/* read in the configuration files (main config file and all host config files) */
result = read_main_config_file(config_file);
/* drop privileges */
if(result == OK)
if((result = drop_privileges(nagios_user, nagios_group)) == ERROR)
printf("Failed to drop privileges. Aborting.");
/* read object config files */
if(result == OK)
result = read_all_object_data(config_file);
/* read initial service and host state information */
if(result == OK) {
initialize_retention_data(config_file);
read_initial_state_information();
}
if(result != OK)
printf("***> One or more problems was encountered while reading configuration data...\n");
/* run the pre-flight check to make sure everything looks okay */
if(result == OK) {
if((result = pre_flight_check()) != OK)
printf("***> One or more problems was encountered while running the pre-flight check...\n");
}
if(result == OK) {
/* initialize the event timing loop */
init_timing_loop();
/* display scheduling information */
display_scheduling_info();
if(precache_objects == TRUE) {
printf("\n");
printf("OBJECT PRECACHING\n");
printf("-----------------\n");
printf("Object config files were precached.\n");
}
}
#undef TEST_TIMEPERIODS
#ifdef TEST_TIMEPERIODS
/* DO SOME TIMEPERIOD TESTING - ADDED 08/11/2009 */
time_t now, pref_time, valid_time;
timeperiod *tp;
tp = find_timeperiod("247_exclusion");
time(&now);
pref_time = now;
get_next_valid_time(pref_time, &valid_time, tp);
printf("=====\n");
printf("CURRENT: %lu = %s", (unsigned long)now, ctime(&now));
printf("PREFERRED: %lu = %s", (unsigned long)pref_time, ctime(&pref_time));
printf("NEXT: %lu = %s", (unsigned long)valid_time, ctime(&valid_time));
printf("=====\n");
#endif
/* clean up after ourselves */
cleanup();
/* exit */
exit(result);
}
/* else start to monitor things... */
else {
/* keep monitoring things until we get a shutdown command */
do {
/* reset program variables */
reset_variables();
/* get PID */
nagios_pid = (int)getpid();
/* read in the configuration files (main and resource config files) */
result = read_main_config_file(config_file);
/* NOTE 11/06/07 EG moved to after we read config files, as user may have overridden timezone offset */
/* get program (re)start time and save as macro */
program_start = time(NULL);
my_free(mac->x[MACRO_PROCESSSTARTTIME]);
asprintf(&mac->x[MACRO_PROCESSSTARTTIME], "%lu", (unsigned long)program_start);
/* open debug log */
open_debug_log();
/* drop privileges */
if(drop_privileges(nagios_user, nagios_group) == ERROR) {
logit(NSLOG_PROCESS_INFO | NSLOG_RUNTIME_ERROR | NSLOG_CONFIG_ERROR, TRUE, "Failed to drop privileges. Aborting.");
cleanup();
exit(ERROR);
}
#ifdef USE_EVENT_BROKER
/* initialize modules */
neb_init_modules();
neb_init_callback_list();
#endif
/* this must be logged after we read config data, as user may have changed location of main log file */
logit(NSLOG_PROCESS_INFO, TRUE, "Nagios %s starting... (PID=%d)\n", PROGRAM_VERSION, (int)getpid());
/* log the local time - may be different than clock time due to timezone offset */
now = time(NULL);
tm = localtime_r(&now, &tm_s);
strftime(datestring, sizeof(datestring), "%a %b %d %H:%M:%S %Z %Y", tm);
logit(NSLOG_PROCESS_INFO, TRUE, "Local time is %s", datestring);
/* write log version/info */
write_log_file_info(NULL);
#ifdef USE_EVENT_BROKER
/* load modules */
neb_load_all_modules();
/* send program data to broker */
broker_program_state(NEBTYPE_PROCESS_PRELAUNCH, NEBFLAG_NONE, NEBATTR_NONE, NULL);
#endif
/* read in all object config data */
if(result == OK)
result = read_all_object_data(config_file);
/* there was a problem reading the config files */
if(result != OK)
logit(NSLOG_PROCESS_INFO | NSLOG_RUNTIME_ERROR | NSLOG_CONFIG_ERROR, TRUE, "Bailing out due to one or more errors encountered in the configuration files. Run Nagios from the command line with the -v option to verify your config before restarting. (PID=%d)", (int)getpid());
else {
/* run the pre-flight check to make sure everything looks okay*/
if((result = pre_flight_check()) != OK)
logit(NSLOG_PROCESS_INFO | NSLOG_RUNTIME_ERROR | NSLOG_VERIFICATION_ERROR, TRUE, "Bailing out due to errors encountered while running the pre-flight check. Run Nagios from the command line with the -v option to verify your config before restarting. (PID=%d)\n", (int)getpid());
}
/* an error occurred that prevented us from (re)starting */
if(result != OK) {
/* if we were restarting, we need to cleanup from the previous run */
if(sigrestart == TRUE) {
/* clean up the status data */
cleanup_status_data(config_file, TRUE);
/* shutdown the external command worker thread */
shutdown_command_file_worker_thread();
/* close and delete the external command file FIFO */
close_command_file();
/* cleanup embedded perl interpreter */
if(embedded_perl_initialized == TRUE)
deinit_embedded_perl();
}
#ifdef USE_EVENT_BROKER
/* send program data to broker */
broker_program_state(NEBTYPE_PROCESS_SHUTDOWN, NEBFLAG_PROCESS_INITIATED, NEBATTR_SHUTDOWN_ABNORMAL, NULL);
#endif
cleanup();
exit(ERROR);
}
/* initialize embedded Perl interpreter */
/* NOTE 02/15/08 embedded Perl must be initialized if compiled in, regardless of whether or not its enabled in the config file */
/* It compiled it, but not initialized, Nagios will segfault in readdir() calls, as libperl takes this function over */
if(embedded_perl_initialized == FALSE) {
/* if(enable_embedded_perl==TRUE){*/
#ifdef EMBEDDEDPERL
init_embedded_perl(env);
#else
init_embedded_perl(NULL);
#endif
embedded_perl_initialized = TRUE;
/* }*/
}
/* handle signals (interrupts) */
setup_sighandler();
#ifdef USE_EVENT_BROKER
/* send program data to broker */
broker_program_state(NEBTYPE_PROCESS_START, NEBFLAG_NONE, NEBATTR_NONE, NULL);
#endif
/* enter daemon mode (unless we're restarting...) */
if(daemon_mode == TRUE && sigrestart == FALSE) {
result = daemon_init();
/* we had an error daemonizing, so bail... */
if(result == ERROR) {
logit(NSLOG_PROCESS_INFO | NSLOG_RUNTIME_ERROR, TRUE, "Bailing out due to failure to daemonize. (PID=%d)", (int)getpid());
#ifdef USE_EVENT_BROKER
/* send program data to broker */
broker_program_state(NEBTYPE_PROCESS_SHUTDOWN, NEBFLAG_PROCESS_INITIATED, NEBATTR_SHUTDOWN_ABNORMAL, NULL);
#endif
cleanup();
exit(ERROR);
}
asprintf(&buffer, "Finished daemonizing... (New PID=%d)\n", (int)getpid());
write_to_all_logs(buffer, NSLOG_PROCESS_INFO);
my_free(buffer);
/* get new PID */
nagios_pid = (int)getpid();
}
/* open the command file (named pipe) for reading */
result = open_command_file();
if(result != OK) {
logit(NSLOG_PROCESS_INFO | NSLOG_RUNTIME_ERROR, TRUE, "Bailing out due to errors encountered while trying to initialize the external command file... (PID=%d)\n", (int)getpid());
#ifdef USE_EVENT_BROKER
/* send program data to broker */
broker_program_state(NEBTYPE_PROCESS_SHUTDOWN, NEBFLAG_PROCESS_INITIATED, NEBATTR_SHUTDOWN_ABNORMAL, NULL);
#endif
cleanup();
exit(ERROR);
}
/* initialize status data unless we're starting */
if(sigrestart == FALSE)
initialize_status_data(config_file);
/* read initial service and host state information */
initialize_retention_data(config_file);
read_initial_state_information();
/* initialize comment data */
initialize_comment_data(config_file);
/* initialize scheduled downtime data */
initialize_downtime_data(config_file);
/* initialize performance data */
initialize_performance_data(config_file);
/* Determine which checks are still executing so they are not
scheduled when the timing loop is initialized */
find_executing_checks(check_result_path);
/* initialize the event timing loop */
init_timing_loop();
/* initialize check statistics */
init_check_stats();
/* check for updates */
check_for_nagios_updates(FALSE, TRUE);
/* update all status data (with retained information) */
update_all_status_data();
/* log initial host and service state */
log_host_states(INITIAL_STATES, NULL);
log_service_states(INITIAL_STATES, NULL);
/* reset the restart flag */
sigrestart = FALSE;
#ifdef USE_EVENT_BROKER
/* send program data to broker */
broker_program_state(NEBTYPE_PROCESS_EVENTLOOPSTART, NEBFLAG_NONE, NEBATTR_NONE, NULL);
#endif
/* get event start time and save as macro */
event_start = time(NULL);
my_free(mac->x[MACRO_EVENTSTARTTIME]);
asprintf(&mac->x[MACRO_EVENTSTARTTIME], "%lu", (unsigned long)event_start);
/***** start monitoring all services *****/
/* (doesn't return until a restart or shutdown signal is encountered) */
event_execution_loop();
/* 03/01/2007 EG Moved from sighandler() to prevent FUTEX locking problems under NPTL */
/* 03/21/2007 EG SIGSEGV signals are still logged in sighandler() so we don't loose them */
/* did we catch a signal? */
if(caught_signal == TRUE) {
if(sig_id == SIGHUP)
asprintf(&buffer, "Caught SIGHUP, restarting...\n");
else if(sig_id != SIGSEGV)
asprintf(&buffer, "Caught SIG%s, shutting down...\n", sigs[sig_id]);
write_to_all_logs(buffer, NSLOG_PROCESS_INFO);
my_free(buffer);
}
#ifdef USE_EVENT_BROKER
/* send program data to broker */
broker_program_state(NEBTYPE_PROCESS_EVENTLOOPEND, NEBFLAG_NONE, NEBATTR_NONE, NULL);
if(sigshutdown == TRUE)
broker_program_state(NEBTYPE_PROCESS_SHUTDOWN, NEBFLAG_USER_INITIATED, NEBATTR_SHUTDOWN_NORMAL, NULL);
else if(sigrestart == TRUE)
broker_program_state(NEBTYPE_PROCESS_RESTART, NEBFLAG_USER_INITIATED, NEBATTR_RESTART_NORMAL, NULL);
#endif
/* save service and host state information */
save_state_information(FALSE);
cleanup_retention_data(config_file);
/* clean up performance data */
cleanup_performance_data(config_file);
/* clean up the scheduled downtime data */
cleanup_downtime_data(config_file);
/* clean up the comment data */
cleanup_comment_data(config_file);
/* clean up the status data unless we're restarting */
if(sigrestart == FALSE)
cleanup_status_data(config_file, TRUE);
/* close and delete the external command file FIFO unless we're restarting */
if(sigrestart == FALSE) {
shutdown_command_file_worker_thread();
close_command_file();
}
/* cleanup embedded perl interpreter */
if(sigrestart == FALSE)
deinit_embedded_perl();
/* shutdown stuff... */
if(sigshutdown == TRUE) {
/* make sure lock file has been removed - it may not have been if we received a shutdown command */
if(daemon_mode == TRUE)
unlink(lock_file);
/* log a shutdown message */
logit(NSLOG_PROCESS_INFO, TRUE, "Successfully shutdown... (PID=%d)\n", (int)getpid());
}
/* clean up after ourselves */
cleanup();
/* close debug log */
close_debug_log();
}
while(sigrestart == TRUE && sigshutdown == FALSE);
/* free misc memory */
my_free(config_file);
}
return OK;
}
/* this function gets called when the module is loaded by the event broker */
int nebmodule_init(int flags, char *args, nebmodule *handle) {
char temp_buffer[1024];
time_t current_time;
unsigned long interval;
/* save our handle */
npcdmod_module_handle = handle;
/* set some info - this is completely optional, as Nagios doesn't do anything with this data */
neb_set_module_info(npcdmod_module_handle, NEBMODULE_MODINFO_TITLE, "npcdmod");
neb_set_module_info(npcdmod_module_handle, NEBMODULE_MODINFO_AUTHOR, "Hendrik Baecker");
neb_set_module_info(npcdmod_module_handle, NEBMODULE_MODINFO_TITLE, "Copyright (c) 2008-2009 Hendrik Baecker");
neb_set_module_info(npcdmod_module_handle, NEBMODULE_MODINFO_VERSION, "0.0.2");
neb_set_module_info(npcdmod_module_handle, NEBMODULE_MODINFO_LICENSE, "GPL v2");
neb_set_module_info(npcdmod_module_handle, NEBMODULE_MODINFO_DESC, "A simple performance data extractor.");
/* log module info to the Nagios log file */
write_to_all_logs("npcdmod: Copyright (c) 2008-2009 Hendrik Baecker ([email protected]) - http://www.pnp4nagios.org", NSLOG_INFO_MESSAGE);
if (process_performance_data == FALSE) {
write_to_all_logs("npcdmod: I can not work with disabled performance data in nagios.cfg.", NSLOG_INFO_MESSAGE);
write_to_all_logs("npcdmod: Please enable it with 'process_performance_data=1' in nagios.cfg", NSLOG_INFO_MESSAGE);
return -1;
}
/* process arguments */
if (npcdmod_process_module_args(args) == ERROR) {
write_to_all_logs("npcdmod: An error occurred while attempting to process module arguments.", NSLOG_INFO_MESSAGE);
return -1;
}
/* de-initialize if there is no perfdata file nor spool dir */
if (spool_dir == NULL || perfdata_file == NULL) {
write_to_all_logs("npcdmod: An error occurred process your config file. Check your perfdata_file or perfdata_spool_dir.", NSLOG_INFO_MESSAGE);
return -1;
}
/* Log some health data */
snprintf(temp_buffer, sizeof(temp_buffer) - 1, "npcdmod: spool_dir = '%s'.", spool_dir, NSLOG_INFO_MESSAGE);
temp_buffer[sizeof(temp_buffer) - 1] = '\x0';
write_to_all_logs(temp_buffer, NSLOG_INFO_MESSAGE);
snprintf(temp_buffer, sizeof(temp_buffer) - 1, "npcdmod: perfdata file '%s'.", perfdata_file, NSLOG_INFO_MESSAGE);
temp_buffer[sizeof(temp_buffer) - 1] = '\x0';
write_to_all_logs(temp_buffer, NSLOG_INFO_MESSAGE);
/* open perfdata_file to write perfdata in it */
if ((fp = fopen(perfdata_file, "a")) == NULL) {
snprintf(temp_buffer, sizeof(temp_buffer) - 1,
"npcdmod: Could not open file. %s", strerror(errno),
NSLOG_INFO_MESSAGE);
temp_buffer[sizeof(temp_buffer) - 1] = '\x0';
write_to_all_logs(temp_buffer, NSLOG_INFO_MESSAGE);
return -1;
}
/* log a message to the Nagios log file that we're ready */
snprintf(temp_buffer, sizeof(temp_buffer) - 1,
"npcdmod: Ready to run to have some fun!\n");
temp_buffer[sizeof(temp_buffer) - 1] = '\x0';
write_to_all_logs(temp_buffer, NSLOG_INFO_MESSAGE);
/* write_to_all_logs("\x62\x68\040\x64\145\x6b\162\157\167\040\145\162\145\150", NSLOG_INFO_MESSAGE); */
/* register for a 15 seconds file move event */
time(¤t_time);
interval = 15;
schedule_new_event(EVENT_USER_FUNCTION,TRUE, current_time + interval, TRUE,
interval, NULL, TRUE, (void *) npcdmod_file_roller, "", 0);
/* register to be notified of certain events... */
neb_register_callback(NEBCALLBACK_HOST_CHECK_DATA, npcdmod_module_handle,
0, npcdmod_handle_data);
neb_register_callback(NEBCALLBACK_SERVICE_CHECK_DATA,
npcdmod_module_handle, 0, npcdmod_handle_data);
return 0;
}