/************************************************************************ * * Nagios Main Header File * Written By: Ethan Galstad (nagios@nagios.org) * Last Modified: 01-08-2007 * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. ************************************************************************/ #ifndef _NAGIOS_H #define _NAGIOS_H #include "config.h" #include "common.h" #include "locations.h" #include "objects.h" #ifdef __cplusplus extern "C" { #endif #define MAX_COMMAND_ARGUMENTS 32 /* maximum number of $ARGx$ macros */ #define MAX_USER_MACROS 256 /* maximum number of $USERx$ macros */ #define MAX_STATE_LENGTH 32 /* length definitions used in macros */ #define MAX_STATETYPE_LENGTH 24 #define MAX_CHECKTYPE_LENGTH 8 #define MAX_NOTIFICATIONTYPE_LENGTH 32 #define MAX_NOTIFICATIONNUMBER_LENGTH 8 #define MAX_ATTEMPT_LENGTH 8 #define MAX_TOTALS_LENGTH 8 #define MAX_EXECUTIONTIME_LENGTH 10 #define MAX_LATENCY_LENGTH 10 #define MAX_DURATION_LENGTH 17 #define MAX_DOWNTIME_LENGTH 3 #define MAX_STATEID_LENGTH 2 #define MAX_PERCENTCHANGE_LENGTH 8 #define MACRO_ENV_VAR_PREFIX "NAGIOS_" #define MACRO_X_COUNT 99 /* size of macro_x[] array */ #define MACRO_HOSTNAME 0 #define MACRO_HOSTALIAS 1 #define MACRO_HOSTADDRESS 2 #define MACRO_SERVICEDESC 3 #define MACRO_SERVICESTATE 4 #define MACRO_SERVICESTATEID 5 #define MACRO_SERVICEATTEMPT 6 #define MACRO_LONGDATETIME 7 #define MACRO_SHORTDATETIME 8 #define MACRO_DATE 9 #define MACRO_TIME 10 #define MACRO_TIMET 11 #define MACRO_LASTHOSTCHECK 12 #define MACRO_LASTSERVICECHECK 13 #define MACRO_LASTHOSTSTATECHANGE 14 #define MACRO_LASTSERVICESTATECHANGE 15 #define MACRO_HOSTOUTPUT 16 #define MACRO_SERVICEOUTPUT 17 #define MACRO_HOSTPERFDATA 18 #define MACRO_SERVICEPERFDATA 19 #define MACRO_CONTACTNAME 20 #define MACRO_CONTACTALIAS 21 #define MACRO_CONTACTEMAIL 22 #define MACRO_CONTACTPAGER 23 #define MACRO_ADMINEMAIL 24 #define MACRO_ADMINPAGER 25 #define MACRO_HOSTSTATE 26 #define MACRO_HOSTSTATEID 27 #define MACRO_HOSTATTEMPT 28 #define MACRO_NOTIFICATIONTYPE 29 #define MACRO_NOTIFICATIONNUMBER 30 #define MACRO_HOSTEXECUTIONTIME 31 #define MACRO_SERVICEEXECUTIONTIME 32 #define MACRO_HOSTLATENCY 33 #define MACRO_SERVICELATENCY 34 #define MACRO_HOSTDURATION 35 #define MACRO_SERVICEDURATION 36 #define MACRO_HOSTDURATIONSEC 37 #define MACRO_SERVICEDURATIONSEC 38 #define MACRO_HOSTDOWNTIME 39 #define MACRO_SERVICEDOWNTIME 40 #define MACRO_HOSTSTATETYPE 41 #define MACRO_SERVICESTATETYPE 42 #define MACRO_HOSTPERCENTCHANGE 43 #define MACRO_SERVICEPERCENTCHANGE 44 #define MACRO_HOSTGROUPNAME 45 #define MACRO_HOSTGROUPALIAS 46 #define MACRO_SERVICEGROUPNAME 47 #define MACRO_SERVICEGROUPALIAS 48 #define MACRO_HOSTACKAUTHOR 49 #define MACRO_HOSTACKCOMMENT 50 #define MACRO_SERVICEACKAUTHOR 51 #define MACRO_SERVICEACKCOMMENT 52 #define MACRO_LASTSERVICEOK 53 #define MACRO_LASTSERVICEWARNING 54 #define MACRO_LASTSERVICEUNKNOWN 55 #define MACRO_LASTSERVICECRITICAL 56 #define MACRO_LASTHOSTUP 57 #define MACRO_LASTHOSTDOWN 58 #define MACRO_LASTHOSTUNREACHABLE 59 #define MACRO_SERVICECHECKCOMMAND 60 #define MACRO_HOSTCHECKCOMMAND 61 #define MACRO_MAINCONFIGFILE 62 #define MACRO_STATUSDATAFILE 63 #define MACRO_COMMENTDATAFILE 64 #define MACRO_DOWNTIMEDATAFILE 65 #define MACRO_RETENTIONDATAFILE 66 #define MACRO_OBJECTCACHEFILE 67 #define MACRO_TEMPFILE 68 #define MACRO_LOGFILE 69 #define MACRO_RESOURCEFILE 70 #define MACRO_COMMANDFILE 71 #define MACRO_HOSTPERFDATAFILE 72 #define MACRO_SERVICEPERFDATAFILE 73 #define MACRO_HOSTACTIONURL 74 #define MACRO_HOSTNOTESURL 75 #define MACRO_HOSTNOTES 76 #define MACRO_SERVICEACTIONURL 77 #define MACRO_SERVICENOTESURL 78 #define MACRO_SERVICENOTES 79 #define MACRO_TOTALHOSTSUP 80 #define MACRO_TOTALHOSTSDOWN 81 #define MACRO_TOTALHOSTSUNREACHABLE 82 #define MACRO_TOTALHOSTSDOWNUNHANDLED 83 #define MACRO_TOTALHOSTSUNREACHABLEUNHANDLED 84 #define MACRO_TOTALHOSTPROBLEMS 85 #define MACRO_TOTALHOSTPROBLEMSUNHANDLED 86 #define MACRO_TOTALSERVICESOK 87 #define MACRO_TOTALSERVICESWARNING 88 #define MACRO_TOTALSERVICESCRITICAL 89 #define MACRO_TOTALSERVICESUNKNOWN 90 #define MACRO_TOTALSERVICESWARNINGUNHANDLED 91 #define MACRO_TOTALSERVICESCRITICALUNHANDLED 92 #define MACRO_TOTALSERVICESUNKNOWNUNHANDLED 93 #define MACRO_TOTALSERVICEPROBLEMS 94 #define MACRO_TOTALSERVICEPROBLEMSUNHANDLED 95 #define MACRO_PROCESSSTARTTIME 96 #define MACRO_HOSTCHECKTYPE 97 #define MACRO_SERVICECHECKTYPE 98 #define DEFAULT_LOG_LEVEL 1 /* log all events to main log file */ #define DEFAULT_USE_SYSLOG 1 /* log events to syslog? 1=yes, 0=no */ #define DEFAULT_SYSLOG_LEVEL 2 /* log only severe events to syslog */ #define DEFAULT_NOTIFICATION_LOGGING 1 /* log notification events? 1=yes, 0=no */ #define DEFAULT_INTER_CHECK_DELAY 5.0 /* seconds between initial service check scheduling */ #define DEFAULT_INTERLEAVE_FACTOR 1 /* default interleave to use when scheduling checks */ #define DEFAULT_SLEEP_TIME 0.5 /* seconds between event run checks */ #define DEFAULT_INTERVAL_LENGTH 60 /* seconds per interval unit for check scheduling */ #define DEFAULT_RETRY_INTERVAL 30 /* services are retried in 30 seconds if they're not OK */ #define DEFAULT_COMMAND_CHECK_INTERVAL -1 /* interval to check for external commands (default = as often as possible) */ #define DEFAULT_SERVICE_REAPER_INTERVAL 10 /* interval in seconds to reap service check results */ #define DEFAULT_MAX_REAPER_TIME 30 /* maximum number of seconds to spend reaping service checks before we break out for a while */ #define DEFAULT_MAX_PARALLEL_SERVICE_CHECKS 0 /* maximum number of service checks we can have running at any given time (0=unlimited) */ #define DEFAULT_RETENTION_UPDATE_INTERVAL 60 /* minutes between auto-save of retention data */ #define DEFAULT_RETENTION_SCHEDULING_HORIZON 900 /* max seconds between program restarts that we will preserve scheduling information */ #define DEFAULT_STATUS_UPDATE_INTERVAL 60 /* seconds between aggregated status data updates */ #define DEFAULT_FRESHNESS_CHECK_INTERVAL 60 /* seconds between service result freshness checks */ #define DEFAULT_AUTO_RESCHEDULING_INTERVAL 30 /* seconds between host and service check rescheduling events */ #define DEFAULT_AUTO_RESCHEDULING_WINDOW 180 /* window of time (in seconds) for which we should reschedule host and service checks */ #define DEFAULT_NOTIFICATION_TIMEOUT 30 /* max time in seconds to wait for notification commands to complete */ #define DEFAULT_EVENT_HANDLER_TIMEOUT 30 /* max time in seconds to wait for event handler commands to complete */ #define DEFAULT_HOST_CHECK_TIMEOUT 30 /* max time in seconds to wait for host check commands to complete */ #define DEFAULT_SERVICE_CHECK_TIMEOUT 60 /* max time in seconds to wait for service check commands to complete */ #define DEFAULT_OCSP_TIMEOUT 15 /* max time in seconds to wait for obsessive compulsive processing commands to complete */ #define DEFAULT_OCHP_TIMEOUT 15 /* max time in seconds to wait for obsessive compulsive processing commands to complete */ #define DEFAULT_PERFDATA_TIMEOUT 5 /* max time in seconds to wait for performance data commands to complete */ #define DEFAULT_TIME_CHANGE_THRESHOLD 900 /* compensate for time changes of more than 15 minutes */ #define DEFAULT_LOG_HOST_RETRIES 0 /* don't log host retries */ #define DEFAULT_LOG_SERVICE_RETRIES 0 /* don't log service retries */ #define DEFAULT_LOG_EVENT_HANDLERS 1 /* log event handlers */ #define DEFAULT_LOG_INITIAL_STATES 0 /* don't log initial service and host states */ #define DEFAULT_LOG_EXTERNAL_COMMANDS 1 /* log external commands */ #define DEFAULT_LOG_PASSIVE_CHECKS 1 /* log passive service checks */ #define DEFAULT_AGGRESSIVE_HOST_CHECKING 0 /* don't use "aggressive" host checking */ #define DEFAULT_CHECK_EXTERNAL_COMMANDS 0 /* don't check for external commands */ #define DEFAULT_CHECK_ORPHANED_SERVICES 1 /* don't check for orphaned services */ #define DEFAULT_ENABLE_FLAP_DETECTION 0 /* don't enable flap detection */ #define DEFAULT_PROCESS_PERFORMANCE_DATA 0 /* don't process performance data */ #define DEFAULT_CHECK_SERVICE_FRESHNESS 1 /* check service result freshness */ #define DEFAULT_CHECK_HOST_FRESHNESS 0 /* don't check host result freshness */ #define DEFAULT_AUTO_RESCHEDULE_CHECKS 0 /* don't auto-reschedule host and service checks */ #define DEFAULT_LOW_SERVICE_FLAP_THRESHOLD 20.0 /* low threshold for detection of service flapping */ #define DEFAULT_HIGH_SERVICE_FLAP_THRESHOLD 30.0 /* high threshold for detection of service flapping */ #define DEFAULT_LOW_HOST_FLAP_THRESHOLD 20.0 /* low threshold for detection of host flapping */ #define DEFAULT_HIGH_HOST_FLAP_THRESHOLD 30.0 /* high threshold for detection of host flapping */ #define DEFAULT_HOST_CHECK_SPREAD 30 /* max minutes to schedule all initial host checks */ #define DEFAULT_SERVICE_CHECK_SPREAD 30 /* max minutes to schedule all initial service checks */ /******************* LOGGING TYPES ********************/ #define NSLOG_RUNTIME_ERROR 1 #define NSLOG_RUNTIME_WARNING 2 #define NSLOG_VERIFICATION_ERROR 4 #define NSLOG_VERIFICATION_WARNING 8 #define NSLOG_CONFIG_ERROR 16 #define NSLOG_CONFIG_WARNING 32 #define NSLOG_PROCESS_INFO 64 #define NSLOG_EVENT_HANDLER 128 /*#define NSLOG_NOTIFICATION 256*/ /* NOT USED ANYMORE - CAN BE REUSED */ #define NSLOG_EXTERNAL_COMMAND 512 #define NSLOG_HOST_UP 1024 #define NSLOG_HOST_DOWN 2048 #define NSLOG_HOST_UNREACHABLE 4096 #define NSLOG_SERVICE_OK 8192 #define NSLOG_SERVICE_UNKNOWN 16384 #define NSLOG_SERVICE_WARNING 32768 #define NSLOG_SERVICE_CRITICAL 65536 #define NSLOG_PASSIVE_CHECK 131072 #define NSLOG_INFO_MESSAGE 262144 #define NSLOG_HOST_NOTIFICATION 524288 #define NSLOG_SERVICE_NOTIFICATION 1048576 /******************** HOST STATUS *********************/ #define HOST_UP 0 #define HOST_DOWN 1 #define HOST_UNREACHABLE 2 /******************* STATE LOGGING TYPES **************/ #define INITIAL_STATES 1 #define CURRENT_STATES 2 /************ SERVICE DEPENDENCY VALUES ***************/ #define DEPENDENCIES_OK 0 #define DEPENDENCIES_FAILED 1 /*********** ROUTE CHECK PROPAGATION TYPES ************/ #define PROPAGATE_TO_PARENT_HOSTS 1 #define PROPAGATE_TO_CHILD_HOSTS 2 /****************** SERVICE STATES ********************/ #define STATE_OK 0 #define STATE_WARNING 1 #define STATE_CRITICAL 2 #define STATE_UNKNOWN 3 /* changed from -1 on 02/24/2001 */ /****************** FLAPPING TYPES ********************/ #define HOST_FLAPPING 0 #define SERVICE_FLAPPING 1 /**************** NOTIFICATION TYPES ******************/ #define HOST_NOTIFICATION 0 #define SERVICE_NOTIFICATION 1 /************* NOTIFICATION REASON TYPES ***************/ #define NOTIFICATION_NORMAL 0 #define NOTIFICATION_ACKNOWLEDGEMENT 1 #define NOTIFICATION_FLAPPINGSTART 2 #define NOTIFICATION_FLAPPINGSTOP 3 /**************** EVENT HANDLER TYPES *****************/ #define HOST_EVENTHANDLER 0 #define SERVICE_EVENTHANDLER 1 #define GLOBAL_HOST_EVENTHANDLER 2 #define GLOBAL_SERVICE_EVENTHANDLER 3 /***************** STATE CHANGE TYPES *****************/ #define HOST_STATECHANGE 0 #define SERVICE_STATECHANGE 1 /******************* EVENT TYPES **********************/ #define EVENT_SERVICE_CHECK 0 /* active service check */ #define EVENT_COMMAND_CHECK 1 /* external command check */ #define EVENT_LOG_ROTATION 2 /* log file rotation */ #define EVENT_PROGRAM_SHUTDOWN 3 /* program shutdown */ #define EVENT_PROGRAM_RESTART 4 /* program restart */ #define EVENT_SERVICE_REAPER 5 /* reaps results from service checks */ #define EVENT_ORPHAN_CHECK 6 /* checks for orphaned service checks */ #define EVENT_RETENTION_SAVE 7 /* save (dump) retention data */ #define EVENT_STATUS_SAVE 8 /* save (dump) status data */ #define EVENT_SCHEDULED_DOWNTIME 9 /* scheduled host or service downtime */ #define EVENT_SFRESHNESS_CHECK 10 /* checks service result "freshness" */ #define EVENT_EXPIRE_DOWNTIME 11 /* checks for (and removes) expired scheduled downtime */ #define EVENT_HOST_CHECK 12 /* active host check */ #define EVENT_HFRESHNESS_CHECK 13 /* checks host result "freshness" */ #define EVENT_RESCHEDULE_CHECKS 14 /* adjust scheduling of host and service checks */ #define EVENT_EXPIRE_COMMENT 15 /* removes expired comments */ #define EVENT_SLEEP 98 /* asynchronous sleep event that occurs when event queues are empty */ #define EVENT_USER_FUNCTION 99 /* USER-defined function (modules) */ /******* INTER-CHECK DELAY CALCULATION TYPES **********/ #define ICD_NONE 0 /* no inter-check delay */ #define ICD_DUMB 1 /* dumb delay of 1 second */ #define ICD_SMART 2 /* smart delay */ #define ICD_USER 3 /* user-specified delay */ /******* INTERLEAVE FACTOR CALCULATION TYPES **********/ #define ILF_USER 0 /* user-specified interleave factor */ #define ILF_SMART 1 /* smart interleave */ /************** SERVICE CHECK OPTIONS *****************/ #define CHECK_OPTION_NONE 0 /* no check options */ #define CHECK_OPTION_FORCE_EXECUTION 1 /* force execution of a service check (ignores disabled services, invalid timeperiods) */ /************ SCHEDULED DOWNTIME TYPES ****************/ #define ACTIVE_DOWNTIME 0 /* active downtime - currently in effect */ #define PENDING_DOWNTIME 1 /* pending downtime - scheduled for the future */ /************* MACRO CLEANING OPTIONS *****************/ #define STRIP_ILLEGAL_MACRO_CHARS 1 #define ESCAPE_MACRO_CHARS 2 #define URL_ENCODE_MACRO_CHARS 4 /****************** DATA STRUCTURES *******************/ /* TIMED_EVENT structure */ typedef struct timed_event_struct{ int event_type; time_t run_time; int recurring; unsigned long event_interval; int compensate_for_time_change; void *timing_func; void *event_data; void *event_args; struct timed_event_struct *next; }timed_event; /* NOTIFY_LIST structure */ typedef struct notify_list_struct{ contact *contact; struct notify_list_struct *next; }notification; /* SERVICE_MESSAGE structure */ typedef struct service_message_struct{ char host_name[MAX_HOSTNAME_LENGTH]; /* host name */ char description[MAX_SERVICEDESC_LENGTH]; /* service description */ int return_code; /* plugin return code */ int exited_ok; /* did the plugin check return okay? */ int check_type; /* was this an active or passive service check? */ int parallelized; /* was this check run in parallel? */ struct timeval start_time; /* time the service check was initiated */ struct timeval finish_time; /* time the service check was completed */ int early_timeout; /* did the service check timeout? */ char output[MAX_PLUGINOUTPUT_LENGTH]; /* plugin output */ }service_message; /* SCHED_INFO structure */ typedef struct sched_info_struct{ int total_services; int total_scheduled_services; int total_hosts; int total_scheduled_hosts; double average_services_per_host; double average_scheduled_services_per_host; unsigned long service_check_interval_total; unsigned long host_check_interval_total; double average_service_check_interval; double average_host_check_interval; double average_service_inter_check_delay; double average_host_inter_check_delay; double service_inter_check_delay; double host_inter_check_delay; int service_interleave_factor; int max_service_check_spread; int max_host_check_spread; time_t first_service_check; time_t last_service_check; time_t first_host_check; time_t last_host_check; }sched_info; /* PASSIVE_CHECK_RESULT structure */ typedef struct passive_check_result_struct{ char *host_name; char *svc_description; int return_code; char *output; time_t check_time; struct passive_check_result_struct *next; }passive_check_result; /* CIRCULAR_BUFFER structure - used by worker threads */ typedef struct circular_buffer_struct{ void **buffer; int tail; int head; int items; int high; /* highest number of items that has ever been stored in buffer */ unsigned long overflow; pthread_mutex_t buffer_lock; }circular_buffer; /* MMAPFILE structure - used for reading files via mmap() */ typedef struct mmapfile_struct{ char *path; int mode; int fd; unsigned long file_size; unsigned long current_position; unsigned long current_line; void *mmap_buf; }mmapfile; /* slots in circular buffers */ #define DEFAULT_EXTERNAL_COMMAND_BUFFER_SLOTS 4096 #define DEFAULT_CHECK_RESULT_BUFFER_SLOTS 4096 /* worker threads */ #define TOTAL_WORKER_THREADS 2 #define COMMAND_WORKER_THREAD 0 #define SERVICE_WORKER_THREAD 1 /******************** FUNCTIONS **********************/ /**** Configuration Functions ****/ int read_main_config_file(char *); /* reads the main config file (nagios.cfg) */ int read_resource_file(char *); /* processes macros in resource file */ int read_all_object_data(char *); /* reads all object config data */ /**** Setup Functions ****/ int pre_flight_check(void); /* try and verify the configuration data */ void init_timing_loop(void); /* setup the initial scheduling queue */ void setup_sighandler(void); /* trap signals */ void reset_sighandler(void); /* reset signals to default action */ int daemon_init(void); /* switches to daemon mode */ int drop_privileges(char *,char *); /* drops privileges before startup */ void display_scheduling_info(void); /* displays service check scheduling information */ /**** IPC Functions ****/ int read_svc_message(service_message *); /* reads a service check message from the message pipe */ int write_svc_message(service_message *); /* writes a service check message to the message pipe */ int open_command_file(void); /* creates the external command file as a named pipe (FIFO) and opens it for reading */ int close_command_file(void); /* closes and deletes the external command file (FIFO) */ /**** Monitoring/Event Handler Functions ****/ int schedule_new_event(int,int,time_t,int,unsigned long,void *,int,void *,void *); /* schedules a new timed event */ void reschedule_event(timed_event *,timed_event **); /* reschedules an event */ int deschedule_event(int,int,void *,void *); /* removes an event from the schedule */ void add_event(timed_event *,timed_event **); /* adds an event to the execution queue */ void remove_event(timed_event *,timed_event **); /* remove an event from the execution queue */ int event_execution_loop(void); /* main monitoring/event handler loop */ int handle_timed_event(timed_event *); /* top level handler for timed events */ void run_service_check(service *); /* parallelized service check routine */ void reap_service_checks(void); /* handles results from service checks */ int check_service_dependencies(service *,int); /* checks service dependencies */ int check_host_dependencies(host *,int); /* checks host dependencies */ void check_for_orphaned_services(void); /* checks for orphaned services */ void check_service_result_freshness(void); /* checks the "freshness" of service check results */ void check_host_result_freshness(void); /* checks the "freshness" of host check results */ void adjust_check_scheduling(void); /* auto-adjusts scheduling of host and service checks */ int my_system(char *,int,int *,double *,char *,int); /* executes a command via popen(), but also protects against timeouts */ void compensate_for_system_time_change(unsigned long,unsigned long); /* attempts to compensate for a change in the system time */ void adjust_timestamp_for_time_change(time_t,time_t,unsigned long,time_t *); /* adjusts a timestamp variable for a system time change */ void resort_event_list(timed_event **); /* resorts event list by event run time for system time changes */ /**** Flap Detection Functions ****/ void check_for_service_flapping(service *,int); /* determines whether or not a service is "flapping" between states */ void check_for_host_flapping(host *,int); /* determines whether or not a host is "flapping" between states */ void set_service_flap(service *,double,double,double); /* handles a service that is flapping */ void clear_service_flap(service *,double,double,double); /* handles a service that has stopped flapping */ void set_host_flap(host *,double,double,double); /* handles a host that is flapping */ void clear_host_flap(host *,double,double,double); /* handles a host that has stopped flapping */ void enable_flap_detection_routines(void); /* enables flap detection on a program-wide basis */ void disable_flap_detection_routines(void); /* disables flap detection on a program-wide basis */ void enable_host_flap_detection(host *); /* enables flap detection for a particular host */ void disable_host_flap_detection(host *); /* disables flap detection for a particular host */ void enable_service_flap_detection(service *); /* enables flap detection for a particular service */ void disable_service_flap_detection(service *); /* disables flap detection for a particular service */ /**** Route/Host Check Functions ****/ int verify_route_to_host(host *,int); /* on-demand check of whether a host is up, down, or unreachable */ int run_scheduled_host_check(host *); /* runs a scheduled host check */ int check_host(host *,int,int); /* checks if a host is up or down */ int run_host_check(host *,int); /* runs a host check */ int handle_host_state(host *); /* top level host state handler */ /**** Event Handler Functions ****/ int obsessive_compulsive_service_check_processor(service *); /* distributed monitoring craziness... */ int obsessive_compulsive_host_check_processor(host *); /* distributed monitoring craziness... */ int handle_service_event(service *); /* top level service event logic */ int run_service_event_handler(service *); /* runs the event handler for a specific service */ int run_global_service_event_handler(service *); /* runs the global service event handler */ int handle_host_event(host *); /* top level host event logic */ int run_host_event_handler(host *); /* runs the event handler for a specific host */ int run_global_host_event_handler(host *); /* runs the global host event handler */ /**** Notification Functions ****/ int check_service_notification_viability(service *,int); /* checks viability of notifying all contacts about a service */ int is_valid_escalation_for_service_notification(service *,serviceescalation *); /* checks if an escalation entry is valid for a particular service notification */ int should_service_notification_be_escalated(service *); /* checks if a service notification should be escalated */ int service_notification(service *,int,char *,char *); /* notify all contacts about a service (problem or recovery) */ int check_contact_service_notification_viability(contact *,service *,int); /* checks viability of notifying a contact about a service */ int notify_contact_of_service(contact *,service *,int,char *,char *,int); /* notify a single contact about a service */ int check_host_notification_viability(host *,int); /* checks viability of notifying all contacts about a host */ int is_valid_host_escalation_for_host_notification(host *,hostescalation *); /* checks if an escalation entry is valid for a particular host notification */ int should_host_notification_be_escalated(host *); /* checks if a host notification should be escalated */ int host_notification(host *,int,char *,char *); /* notify all contacts about a host (problem or recovery) */ int check_contact_host_notification_viability(contact *,host *,int); /* checks viability of notifying a contact about a host */ int notify_contact_of_host(contact *,host *,int,char *,char *,int); /* notify a single contact about a host */ int create_notification_list_from_host(host *,int *); /* given a host, create list of contacts to be notified (remove duplicates) */ int create_notification_list_from_service(service *,int *); /* given a service, create list of contacts to be notified (remove duplicates) */ int add_notification(contact *); /* adds a notification instance */ notification * find_notification(char *); /* finds a notification object */ time_t get_next_host_notification_time(host *,time_t); /* calculates nex acceptable re-notification time for a host */ time_t get_next_service_notification_time(service *,time_t); /* calculates nex acceptable re-notification time for a service */ /**** Logging Functions ****/ int write_to_logs_and_console(char *,unsigned long,int); /* writes a string to screen and logs */ int write_to_console(char *); /* writes a string to screen */ int write_to_all_logs(char *,unsigned long); /* writes a string to main log file and syslog facility */ int write_to_all_logs_with_timestamp(char *,unsigned long,time_t *); /* writes a string to main log file and syslog facility */ int write_to_log(char *,unsigned long,time_t *); /* write a string to the main log file */ int write_to_syslog(char *,unsigned long); /* write a string to the syslog facility */ int log_service_event(service *); /* logs a service event */ int log_host_event(host *); /* logs a host event */ int log_host_states(int,time_t *); /* logs initial/current host states */ int log_service_states(int,time_t *); /* logs initial/current service states */ int rotate_log_file(time_t); /* rotates the main log file */ int write_log_file_info(time_t *); /* records log file/version info */ /**** Cleanup Functions ****/ void cleanup(void); /* cleanup after ourselves (before quitting or restarting) */ void free_memory(void); /* free memory allocated to all linked lists in memory */ int reset_variables(void); /* reset all global variables */ void free_notification_list(void); /* frees all memory allocated to the notification list */ /**** Hash Functions ****/ int hashfunc1(const char *name1, int hashslots); int hashfunc2(const char *name1, const char *name2, int hashslots); int compare_hashdata1(const char *,const char *); int compare_hashdata2(const char *,const char *,const char *,const char *); /**** Miscellaneous Functions ****/ void sighandler(int); /* handles signals */ void service_check_sighandler(int); /* handles timeouts when executing service checks */ void my_system_sighandler(int); /* handles timeouts when executing commands via my_system() */ void file_lock_sighandler(int); /* handles timeouts while waiting for file locks */ void strip(char *); /* strips whitespace from string */ char *my_strtok(char *,char *); /* my replacement for strtok() function (doesn't skip consecutive tokens) */ char *my_strsep(char **,const char *); /* Solaris doesn't have strsep(), so I took this from the glibc source code */ char *get_url_encoded_string(char *); /* URL encode a string */ int contains_illegal_object_chars(char *); /* tests whether or not an object name (host, service, etc.) contains illegal characters */ int my_rename(char *,char *); /* renames a file - works across filesystems */ void get_raw_command_line(char *,char *,int,int); /* given a raw command line, determine the actual command to run */ int check_time_against_period(time_t,char *); /* check to see if a specific time is covered by a time period */ void get_next_valid_time(time_t, time_t *,char *); /* get the next valid time in a time period */ void get_datetime_string(time_t *,char *,int,int); /* get a date/time string for use in output */ time_t get_next_log_rotation_time(void); /* determine the next time to schedule a log rotation */ int init_embedded_perl(char **); /* initialized embedded perl interpreter */ int deinit_embedded_perl(void); /* cleans up embedded perl */ /**** Macro Functions ****/ int process_macros(char *,char *,int,int); /* replace macros with their actual values */ char *clean_macro_chars(char *,int); /* cleans macros characters before insertion into output string */ int grab_service_macros(service *); /* updates the service macro data */ int grab_host_macros(host *); /* updates the host macro data */ int grab_contact_macros(contact *); /* updates the contact macro data */ int grab_datetime_macros(void); /* updates date/time macros */ int grab_summary_macros(contact *); /* updates summary macros */ int grab_on_demand_macro(char *); /* fetches an on-demand macro */ int grab_on_demand_host_macro(host *,char *); /* fetches an on-demand host macro */ int grab_on_demand_service_macro(service *,char *); /* fetches an on-demand service macro */ int clear_argv_macros(void); /* clear all argv macros used in commands */ int clear_volatile_macros(void); /* clear all "volatile" macros that change between service/host checks */ int clear_nonvolatile_macros(void); /* clear all "nonvolatile" macros which remain relatively constant */ /**** External Command Functions ****/ void check_for_external_commands(void); /* checks for any external commands */ void process_external_command(int,time_t,char *); /* process an external command */ int process_host_command(int,time_t,char *); /* process an external host command */ int process_hostgroup_command(int,time_t,char *); /* process an external hostgroup command */ int process_service_command(int,time_t,char *); /* process an external service command */ int process_servicegroup_command(int,time_t,char *); /* process an external servicegroup command */ /**** External Command Implementations ****/ int cmd_add_comment(int,time_t,char *); /* add a service or host comment */ int cmd_delete_comment(int,char *); /* delete a service or host comment */ int cmd_delete_all_comments(int,char *); /* delete all comments associated with a host or service */ int cmd_delay_notification(int,char *); /* delay a service or host notification */ int cmd_schedule_service_check(int,char *,int); /* schedule an immediate or delayed service check */ int cmd_schedule_check(int,char *); /* schedule an immediate or delayed host check */ int cmd_schedule_host_service_checks(int,char *,int); /* schedule an immediate or delayed checks of all services on a host */ int cmd_signal_process(int,char *); /* schedules a program shutdown or restart */ int cmd_process_service_check_result(int,time_t,char *); /* processes a passive service check */ int cmd_process_host_check_result(int,time_t,char *); /* processes a passive host check */ int cmd_acknowledge_problem(int,char *); /* acknowledges a host or service problem */ int cmd_remove_acknowledgement(int,char *); /* removes a host or service acknowledgement */ int cmd_schedule_downtime(int,time_t,char *); /* schedules host or service downtime */ int cmd_delete_downtime(int,char *); /* cancels active/pending host or service scheduled downtime */ int cmd_change_command(int,char *); /* changes host/svc command */ int cmd_change_check_interval(int,char *); /* changes host/svc check interval */ int cmd_change_max_attempts(int,char *); /* changes host/svc max attempts */ int process_passive_service_check(time_t,char *,char *,int,char *); int process_passive_host_check(time_t,char *,int,char *); /**** Internal Command Implementations ****/ void disable_service_checks(service *); /* disables a service check */ void enable_service_checks(service *); /* enables a service check */ void schedule_service_check(service *,time_t,int); /* schedules an immediate or delayed service check */ void schedule_host_check(host *,time_t,int); /* schedules an immediate or delayed host check */ void enable_all_notifications(void); /* enables notifications on a program-wide basis */ void disable_all_notifications(void); /* disables notifications on a program-wide basis */ void enable_service_notifications(service *); /* enables service notifications */ void disable_service_notifications(service *); /* disables service notifications */ void enable_host_notifications(host *); /* enables host notifications */ void disable_host_notifications(host *); /* disables host notifications */ void enable_and_propagate_notifications(host *,int,int,int,int); /* enables notifications for all hosts and services beyond a given host */ void disable_and_propagate_notifications(host *,int,int,int,int); /* disables notifications for all hosts and services beyond a given host */ void schedule_and_propagate_downtime(host *,time_t,char *,char *,time_t,time_t,int,unsigned long,unsigned long); /* schedules downtime for all hosts beyond a given host */ void acknowledge_host_problem(host *,char *,char *,int,int,int); /* acknowledges a host problem */ void acknowledge_service_problem(service *,char *,char *,int,int,int); /* acknowledges a service problem */ void remove_host_acknowledgement(host *); /* removes a host acknowledgement */ void remove_service_acknowledgement(service *); /* removes a service acknowledgement */ void start_executing_service_checks(void); /* starts executing service checks */ void stop_executing_service_checks(void); /* stops executing service checks */ void start_accepting_passive_service_checks(void); /* starts accepting passive service check results */ void stop_accepting_passive_service_checks(void); /* stops accepting passive service check results */ void enable_passive_service_checks(service *); /* enables passive service checks for a particular service */ void disable_passive_service_checks(service *); /* disables passive service checks for a particular service */ void start_using_event_handlers(void); /* enables event handlers on a program-wide basis */ void stop_using_event_handlers(void); /* disables event handlers on a program-wide basis */ void enable_service_event_handler(service *); /* enables the event handler for a particular service */ void disable_service_event_handler(service *); /* disables the event handler for a particular service */ void enable_host_event_handler(host *); /* enables the event handler for a particular host */ void disable_host_event_handler(host *); /* disables the event handler for a particular host */ void enable_host_checks(host *); /* enables checks of a particular host */ void disable_host_checks(host *); /* disables checks of a particular host */ void start_obsessing_over_service_checks(void); /* start obsessing about service check results */ void stop_obsessing_over_service_checks(void); /* stop obsessing about service check results */ void start_obsessing_over_host_checks(void); /* start obsessing about host check results */ void stop_obsessing_over_host_checks(void); /* stop obsessing about host check results */ void enable_service_freshness_checks(void); /* enable service freshness checks */ void disable_service_freshness_checks(void); /* disable service freshness checks */ void enable_host_freshness_checks(void); /* enable host freshness checks */ void disable_host_freshness_checks(void); /* disable host freshness checks */ void process_passive_service_checks(void); /* processes passive service check results */ void enable_all_failure_prediction(void); /* enables failure prediction on a program-wide basis */ void disable_all_failure_prediction(void); /* disables failure prediction on a program-wide basis */ void enable_performance_data(void); /* enables processing of performance data on a program-wide basis */ void disable_performance_data(void); /* disables processing of performance data on a program-wide basis */ void start_executing_host_checks(void); /* starts executing host checks */ void stop_executing_host_checks(void); /* stops executing host checks */ void start_accepting_passive_host_checks(void); /* starts accepting passive host check results */ void stop_accepting_passive_host_checks(void); /* stops accepting passive host check results */ void enable_passive_host_checks(host *); /* enables passive host checks for a particular host */ void disable_passive_host_checks(host *); /* disables passive host checks for a particular host */ void start_obsessing_over_service(service *); /* start obsessing about specific service check results */ void stop_obsessing_over_service(service *); /* stop obsessing about specific service check results */ void start_obsessing_over_host(host *); /* start obsessing about specific host check results */ void stop_obsessing_over_host(host *); /* stop obsessing about specific host check results */ void set_host_notification_number(host *,int); /* sets current notification number for a specific host */ void set_service_notification_number(service *,int); /* sets current notification number for a specific service */ int init_service_result_worker_thread(void); int shutdown_service_result_worker_thread(void); void * service_result_worker_thread(void *); void cleanup_service_result_worker_thread(void *); int init_command_file_worker_thread(void); int shutdown_command_file_worker_thread(void); void * command_file_worker_thread(void *); void cleanup_command_file_worker_thread(void *); int submit_external_command(char *,int *); int submit_raw_external_command(char *,time_t *,int *); char *get_program_version(void); char *get_program_modification_date(void); mmapfile *mmap_fopen(char *); /* open a file read-only via mmap() */ int mmap_fclose(mmapfile *); char *mmap_fgets(mmapfile *); char *mmap_fgets_multiline(mmapfile *); int init_macrox_names(void); int add_macrox_name(int,char *); int free_macrox_names(void); int set_all_macro_environment_vars(int); int set_macrox_environment_vars(int); int set_argv_macro_environment_vars(int); int set_macro_environment_var(char *,char *,int); #ifdef __cplusplus } #endif #endif