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nagios4/include/nagios.h

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Imported Upstream version 3.5.1.dfsg
2017-05-19 22:22:40 +02:00
/************************************************************************
*
* Nagios Main Header File
* Written By: Ethan Galstad (egalstad@nagios.org)
* Last Modified: 12-14-2008
*
* 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
#ifndef __GNUC__
# define __attribute__(x) /* nothing */
#endif
#ifndef NSCORE
# define NSCORE
#endif
#include "compat.h"
#include "logging.h"
#include "common.h"
#include "locations.h"
#include "objects.h"
#include "macros.h"
/************* MISC LENGTH/SIZE DEFINITIONS ***********/
/*
NOTE: Plugin length is artificially capped at 8k to prevent runaway plugins from returning MBs/GBs of data
back to Nagios. If you increase the 8k cap by modifying this value, make sure you also increase the value
of MAX_EXTERNAL_COMMAND_LENGTH in common.h to allow for passive checks results received through the external
command file. EG 10/19/07
*/
#define MAX_PLUGIN_OUTPUT_LENGTH 8192 /* max length of plugin output (including perf data) */
/******************* DEFAULT VALUES *******************/
#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_CHECK_REAPER_INTERVAL 10 /* interval in seconds to reap host and 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_CHECK_RESULT_AGE 3600 /* maximum number of seconds that a check result file is considered to be valid */
#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_ORPHAN_CHECK_INTERVAL 60 /* seconds between checks for orphaned hosts and services */
#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_DEBUG_LEVEL 0 /* don't log any debugging information */
#define DEFAULT_DEBUG_VERBOSITY 1
#define DEFAULT_MAX_DEBUG_FILE_SIZE 1000000 /* max size of debug log */
#define DEFAULT_AGGRESSIVE_HOST_CHECKING 0 /* don't use "aggressive" host checking */
#define DEFAULT_CHECK_EXTERNAL_COMMANDS 1 /* check for external commands */
#define DEFAULT_CHECK_ORPHANED_SERVICES 1 /* check for orphaned services */
#define DEFAULT_CHECK_ORPHANED_HOSTS 1 /* check for orphaned hosts */
#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_TRANSLATE_PASSIVE_HOST_CHECKS 0 /* should we translate DOWN/UNREACHABLE passive host checks? */
#define DEFAULT_PASSIVE_HOST_CHECKS_SOFT 0 /* passive host checks are treated as HARD by default */
#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 */
#define DEFAULT_CACHED_HOST_CHECK_HORIZON 15 /* max age in seconds that cached host checks can be used */
#define DEFAULT_CACHED_SERVICE_CHECK_HORIZON 15 /* max age in seconds that cached service checks can be used */
#define DEFAULT_ENABLE_PREDICTIVE_HOST_DEPENDENCY_CHECKS 1 /* should we use predictive host dependency checks? */
#define DEFAULT_ENABLE_PREDICTIVE_SERVICE_DEPENDENCY_CHECKS 1 /* should we use predictive service dependency checks? */
#define DEFAULT_USE_LARGE_INSTALLATION_TWEAKS 0 /* don't use tweaks for large Nagios installations */
#define DEFAULT_ENABLE_EMBEDDED_PERL 0 /* enable embedded Perl interpreter (if compiled in) */
#define DEFAULT_USE_EMBEDDED_PERL_IMPLICITLY 1 /* by default, embedded Perl is used for Perl plugins that don't explicitly disable it */
#define DEFAULT_ADDITIONAL_FRESHNESS_LATENCY 15 /* seconds to be added to freshness thresholds when automatically calculated by Nagios */
#define DEFAULT_CHECK_FOR_UPDATES 1 /* should we check for new Nagios releases? */
#define DEFAULT_BARE_UPDATE_CHECK 0 /* report current version and new installs */
#define MINIMUM_UPDATE_CHECK_INTERVAL 60*60*22 /* 22 hours minimum between checks - please be kind to our servers! */
#define BASE_UPDATE_CHECK_INTERVAL 60*60*22 /* 22 hours base interval */
#define UPDATE_CHECK_INTERVAL_WOBBLE 60*60*4 /* 4 hour wobble on top of base interval */
#define BASE_UPDATE_CHECK_RETRY_INTERVAL 60*60*1 /* 1 hour base retry interval */
#define UPDATE_CHECK_RETRY_INTERVAL_WOBBLE 60*60*3 /* 3 hour wobble on top of base retry interval */
#define DEFAULT_ALLOW_EMPTY_HOSTGROUP_ASSIGNMENT 0 /* Do not allow empty hostgroups by default */
/******************** 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
#define NOTIFICATION_FLAPPINGDISABLED 4
#define NOTIFICATION_DOWNTIMESTART 5
#define NOTIFICATION_DOWNTIMEEND 6
#define NOTIFICATION_DOWNTIMECANCELLED 7
#define NOTIFICATION_CUSTOM 99
/**************** 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
/***************** OBJECT CHECK TYPES *****************/
#define SERVICE_CHECK 0
#define HOST_CHECK 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_CHECK_REAPER 5 /* reaps results from host and service checks */
#define EVENT_ORPHAN_CHECK 6 /* checks for orphaned hosts and services */
#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_CHECK_PROGRAM_UPDATE 16 /* checks for new version of Nagios */
#define EVENT_SLEEP 98 /* asynchronous sleep event that occurs when event queues are empty */
#define EVENT_USER_FUNCTION 99 /* USER-defined function (modules) */
#define EVENT_TYPE_STR( type) ( \
type == EVENT_SERVICE_CHECK ? "EVENT_SERVICE_CHECK" : \
type == EVENT_COMMAND_CHECK ? "EVENT_COMMAND_CHECK" : \
type == EVENT_LOG_ROTATION ? "EVENT_LOG_ROTATION" : \
type == EVENT_PROGRAM_SHUTDOWN ? "EVENT_PROGRAM_SHUTDOWN" : \
type == EVENT_PROGRAM_RESTART ? "EVENT_PROGRAM_RESTART" : \
type == EVENT_CHECK_REAPER ? "EVENT_CHECK_REAPER" : \
type == EVENT_ORPHAN_CHECK ? "EVENT_ORPHAN_CHECK" : \
type == EVENT_RETENTION_SAVE ? "EVENT_RETENTION_SAVE" : \
type == EVENT_STATUS_SAVE ? "EVENT_STATUS_SAVE" : \
type == EVENT_SCHEDULED_DOWNTIME ? "EVENT_SCHEDULED_DOWNTIME" : \
type == EVENT_SFRESHNESS_CHECK ? "EVENT_SFRESHNESS_CHECK" : \
type == EVENT_EXPIRE_DOWNTIME ? "EVENT_EXPIRE_DOWNTIME" : \
type == EVENT_HOST_CHECK ? "EVENT_HOST_CHECK" : \
type == EVENT_HFRESHNESS_CHECK ? "EVENT_HFRESHNESS_CHECK" : \
type == EVENT_RESCHEDULE_CHECKS ? "EVENT_RESCHEDULE_CHECKS" : \
type == EVENT_EXPIRE_COMMENT ? "EVENT_EXPIRE_COMMENT" : \
type == EVENT_CHECK_PROGRAM_UPDATE ? "EVENT_CHECK_PROGRAM_UPDATE" : \
type == EVENT_SLEEP ? "EVENT_SLEEP" : \
type == EVENT_USER_FUNCTION ? "EVENT_USER_FUNCTION" : \
"UNKNOWN_EVENT_TYPE" \
)
/******* 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 */
/************ SCHEDULED DOWNTIME TYPES ****************/
#define ACTIVE_DOWNTIME 0 /* active downtime - currently in effect */
#define PENDING_DOWNTIME 1 /* pending downtime - scheduled for the future */
/****************** DATA STRUCTURES *******************/
NAGIOS_BEGIN_DECL
/* 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;
int event_options;
struct timed_event_struct *next;
struct timed_event_struct *prev;
} timed_event;
/* NOTIFY_LIST structure */
typedef struct notify_list_struct {
contact *contact;
struct notify_list_struct *next;
} notification;
/* CHECK_RESULT structure */
typedef struct check_result_struct {
int object_check_type; /* is this a service or a host check? */
char *host_name; /* host name */
char *service_description; /* service description */
int check_type; /* was this an active or passive service check? */
int check_options;
int scheduled_check; /* was this a scheduled or an on-demand check? */
int reschedule_check; /* should we reschedule the next check */
char *output_file; /* what file is the output stored in? */
FILE *output_file_fp;
int output_file_fd;
double latency;
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? */
int exited_ok; /* did the plugin check return okay? */
int return_code; /* plugin return code */
char *output; /* plugin output */
struct check_result_struct *next;
} check_result;
/* 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_execution_time;
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 {
int object_check_type;
char *host_name;
char *service_description;
int return_code;
char *output;
time_t check_time;
double latency;
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;
/* DBUF structure - dynamic string storage */
typedef struct dbuf_struct {
char *buf;
unsigned long used_size;
unsigned long allocated_size;
unsigned long chunk_size;
} dbuf;
#define CHECK_STATS_BUCKETS 15
/* used for tracking host and service check statistics */
typedef struct check_stats_struct {
int current_bucket;
int bucket[CHECK_STATS_BUCKETS];
int overflow_bucket;
int minute_stats[3];
time_t last_update;
} check_stats;
/******************* THREAD STUFF ********************/
/* slots in circular buffers */
#define DEFAULT_EXTERNAL_COMMAND_BUFFER_SLOTS 4096
/* worker threads */
#define TOTAL_WORKER_THREADS 1
#define COMMAND_WORKER_THREAD 0
/******************** 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 */
int pre_flight_object_check(int *, int *); /* verify object relationships and settings */
int pre_flight_circular_check(int *, int *); /* detects circular dependencies and paths */
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 */
extern void handle_sigxfsz(int); /* handle SIGXFSZ */
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 */
/**** Event Queue Functions ****/
int schedule_new_event(int, int, time_t, int, unsigned long, void *, int, void *, void *, int); /* schedules a new timed event */
void reschedule_event(timed_event *, timed_event **, timed_event **); /* reschedules an event */
void add_event(timed_event *, timed_event **, timed_event **); /* adds an event to the execution queue */
void remove_event(timed_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 adjust_check_scheduling(void); /* auto-adjusts scheduling of host and service checks */
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 **, timed_event **); /* resorts event list by event run time for system time changes */
/**** IPC Functions ****/
int move_check_result_to_queue(char *);
int process_check_result_queue(char *);
int find_executing_checks(char *);
int process_check_result_file(char *, check_result **, int, int);
int add_check_result_to_list(check_result **, check_result *);
check_result *read_check_result(check_result **); /* reads a host/service check result from the list in memory */
int delete_check_result_file(char *);
int free_check_result_list(check_result **);
int init_check_result(check_result *);
int free_check_result(check_result *); /* frees memory associated with a host/service check result */
int parse_check_output(char *, char **, char **, char **, int, int);
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 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_for_orphaned_hosts(void); /* checks for orphaned hosts */
void check_service_result_freshness(void); /* checks the "freshness" of service check results */
int is_service_result_fresh(service *, time_t, int); /* determines if a service's check results are fresh */
void check_host_result_freshness(void); /* checks the "freshness" of host check results */
int is_host_result_fresh(host *, time_t, int); /* determines if a host's check results are fresh */
int my_system(char *, int, int *, double *, char **, int); /* executes a command via popen(), but also protects against timeouts */
int my_system_r(nagios_macros *mac, char *, int, int *, double *, char **, int); /* thread-safe version of the above */
/**** Flap Detection Functions ****/
void check_for_service_flapping(service *, int, int); /* determines whether or not a service is "flapping" between states */
void check_for_host_flapping(host *, int, int, int); /* determines whether or not a host is "flapping" between states */
void set_service_flap(service *, double, double, double, int); /* 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, int); /* 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 */
void handle_host_flap_detection_disabled(host *); /* handles the details when flap detection is disabled globally or on a per-host basis */
void handle_service_flap_detection_disabled(service *); /* handles the details when flap detection is disabled globally or on a per-service basis */
/**** Route/Host Check Functions ****/
int perform_on_demand_host_check(host *, int *, int, int, unsigned long);
int perform_scheduled_host_check(host *, int, double);
int check_host_check_viability_3x(host *, int, int *, time_t *);
int adjust_host_check_attempt_3x(host *, int);
int determine_host_reachability(host *);
int process_host_check_result_3x(host *, int, char *, int, int, int, unsigned long);
int perform_on_demand_host_check_3x(host *, int *, int, int, unsigned long);
int run_sync_host_check_3x(host *, int *, int, int, unsigned long);
int execute_sync_host_check_3x(host *);
int run_scheduled_host_check_3x(host *, int, double);
int run_async_host_check_3x(host *, int, double, int, int, int *, time_t *);
int handle_async_host_check_result_3x(host *, check_result *);
/**** Service Check Functions ****/
int check_service_check_viability(service *, int, int *, time_t *);
int run_scheduled_service_check(service *, int, double);
int run_async_service_check(service *, int, double, int, int, int *, time_t *);
int handle_async_service_check_result(service *, check_result *);
/**** Event Handler Functions ****/
int handle_host_state(host *); /* top level host state handler */
/**** Common Check Fucntions *****/
int reap_check_results(void);
/**** Check Statistics Functions ****/
int init_check_stats(void);
int update_check_stats(int, time_t);
int generate_check_stats(void);
/**** 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(nagios_macros *mac, service *); /* runs the event handler for a specific service */
int run_global_service_event_handler(nagios_macros *mac, service *); /* runs the global service event handler */
int handle_host_event(host *); /* top level host event logic */
int run_host_event_handler(nagios_macros *mac, host *); /* runs the event handler for a specific host */
int run_global_host_event_handler(nagios_macros *mac, host *); /* runs the global host event handler */
/**** Notification Functions ****/
int check_service_notification_viability(service *, int, int); /* checks viability of notifying all contacts about a service */
int is_valid_escalation_for_service_notification(service *, serviceescalation *, int); /* 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 *, int); /* notify all contacts about a service (problem or recovery) */
int check_contact_service_notification_viability(contact *, service *, int, int); /* checks viability of notifying a contact about a service */
int notify_contact_of_service(nagios_macros *mac, contact *, service *, int, char *, char *, int, int); /* notify a single contact about a service */
int check_host_notification_viability(host *, int, int); /* checks viability of notifying all contacts about a host */
int is_valid_escalation_for_host_notification(host *, hostescalation *, int); /* 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 *, int); /* notify all contacts about a host (problem or recovery) */
int check_contact_host_notification_viability(contact *, host *, int, int); /* checks viability of notifying a contact about a host */
int notify_contact_of_host(nagios_macros *mac, contact *, host *, int, char *, char *, int, int); /* notify a single contact about a host */
int create_notification_list_from_host(nagios_macros *mac, host *,int,int *,int); /* given a host, create list of contacts to be notified (remove duplicates) */
int create_notification_list_from_service(nagios_macros *mac, service *,int,int *,int); /* given a service, create list of contacts to be notified (remove duplicates) */
int add_notification(nagios_macros *mac, contact *); /* adds a notification instance */
notification *find_notification(contact *); /* 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 */
/**** Cleanup Functions ****/
void cleanup(void); /* cleanup after ourselves (before quitting or restarting) */
void free_memory(nagios_macros *mac); /* 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 */
/**** Miscellaneous Functions ****/
void sighandler(int); /* handles signals */
void service_check_sighandler(int); /* handles timeouts when executing service checks */
void host_check_sighandler(int); /* handles timeouts when executing host checks */
void my_system_sighandler(int); /* handles timeouts when executing commands via my_system() */
char *get_next_string_from_buf(char *buf, int *start_index, int bufsize);
int compare_strings(char *, char *); /* compares two strings for equality */
char *escape_newlines(char *);
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 */
int my_fcopy(char *, char *); /* copies a file - works across filesystems */
int my_fdcopy(char *, char *, int); /* copies a named source to an already opened destination file */
/* thread-safe version of get_raw_command_line_r() */
extern int get_raw_command_line_r(nagios_macros *mac, command *, char *, char **, int);
/*
* given a raw command line, determine the actual command to run
* Manipulates global_macros.argv and is thus not threadsafe
*/
extern int get_raw_command_line(command *, char *, char **, int);
int check_time_against_period(time_t, timeperiod *); /* check to see if a specific time is covered by a time period */
int is_daterange_single_day(daterange *);
time_t calculate_time_from_weekday_of_month(int, int, int, int); /* calculates midnight time of specific (3rd, last, etc.) weekday of a particular month */
time_t calculate_time_from_day_of_month(int, int, int); /* calculates midnight time of specific (1st, last, etc.) day of a particular month */
void get_next_valid_time(time_t, time_t *, timeperiod *); /* get the next valid time in a time period */
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 */
int file_uses_embedded_perl(char *); /* tests whether or not the embedded perl interpreter should be used on a file */
int dbuf_init(dbuf *, int);
int dbuf_free(dbuf *);
int dbuf_strcat(dbuf *, char *);
int set_environment_var(char *, char *, int); /* sets/clears and environment variable */
int check_for_nagios_updates(int, int); /* checks to see if new version of Nagios are available */
int query_update_api(void); /* checks to see if new version of Nagios are available */
/**** External Command Functions ****/
int check_for_external_commands(void); /* checks for any external commands */
int process_external_command1(char *); /* top-level external command processor */
int process_external_command2(int, time_t, char *); /* process an external command */
int process_external_commands_from_file(char *, int); /* process external commands in a file */
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 */
int process_contact_command(int, time_t, char *); /* process an external contact command */
int process_contactgroup_command(int, time_t, char *); /* process an external contactgroup 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_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_object_int_var(int, char *); /* changes host/svc (int) variable */
int cmd_change_object_char_var(int, char *); /* changes host/svc (char) variable */
int cmd_change_object_custom_var(int, char *); /* changes host/svc custom variable */
int cmd_process_external_commands_from_file(int, char *); /* process external commands from a file */
int cmd_delete_downtime_by_start_time_comment(int, char *);
int cmd_delete_downtime_by_host_name(int, char *);
int cmd_delete_downtime_by_hostgroup_name(int, char *);
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_checks(void); /* processes passive host and 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 */
void enable_contact_host_notifications(contact *); /* enables host notifications for a specific contact */
void disable_contact_host_notifications(contact *); /* disables host notifications for a specific contact */
void enable_contact_service_notifications(contact *); /* enables service notifications for a specific contact */
void disable_contact_service_notifications(contact *); /* disables service notifications for a specific contact */
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);
NAGIOS_END_DECL
#endif
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