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nagios4/include/nagios.h
Mario Fetka 07dcbdceca Imported Upstream version 4.4.4
2019-08-03 18:28:19 +02:00

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/************************************************************************
*
* Nagios Main Header File
* Written By: Ethan Galstad (egalstad@nagios.org)
*
* 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_NAGIOS_H_INCLUDED
#define NAGIOS_NAGIOS_H_INCLUDED
#ifndef NSCORE
# define NSCORE
#endif
#include "defaults.h"
#include "common.h"
#include "logging.h"
#include "locations.h"
#include "objects.h"
#include "macros.h"
/*
* global variables only used in the core. Reducing this list would be
* a Good Thing(tm).
*/
extern char *nagios_binary_path;
extern char *config_file;
extern char *command_file;
extern char *temp_file;
extern char *temp_path;
extern char *check_result_path;
extern char *lock_file;
extern char *object_precache_file;
extern unsigned int nofile_limit, nproc_limit, max_apps;
extern int num_check_workers;
extern char *qh_socket_path;
extern char *nagios_user;
extern char *nagios_group;
extern char *macro_user[MAX_USER_MACROS];
extern char *ocsp_command;
extern char *ochp_command;
extern command *ocsp_command_ptr;
extern command *ochp_command_ptr;
extern int ocsp_timeout;
extern int ochp_timeout;
extern char *global_host_event_handler;
extern char *global_service_event_handler;
extern command *global_host_event_handler_ptr;
extern command *global_service_event_handler_ptr;
extern char *illegal_object_chars;
extern int use_regexp_matches;
extern int use_true_regexp_matching;
extern int use_syslog;
extern char *log_file;
extern char *log_archive_path;
extern int log_notifications;
extern int log_service_retries;
extern int log_host_retries;
extern int log_event_handlers;
extern int log_external_commands;
extern int log_passive_checks;
extern unsigned long logging_options;
extern unsigned long syslog_options;
extern int service_check_timeout;
extern int service_check_timeout_state;
extern int host_check_timeout;
extern int event_handler_timeout;
extern int notification_timeout;
extern int log_initial_states;
extern int log_current_states;
extern int daemon_dumps_core;
extern int sig_id;
extern int caught_signal;
extern int verify_config;
extern int test_scheduling;
extern int precache_objects;
extern int use_precached_objects;
extern int service_inter_check_delay_method;
extern int host_inter_check_delay_method;
extern int service_interleave_factor_method;
extern int max_host_check_spread;
extern int max_service_check_spread;
extern sched_info scheduling_info;
extern int max_parallel_service_checks;
extern int check_reaper_interval;
extern int max_check_reaper_time;
extern int service_freshness_check_interval;
extern int host_freshness_check_interval;
extern int auto_rescheduling_interval;
extern int auto_rescheduling_window;
extern int enable_soft_host_recovery;
extern int enable_soft_service_recovery;
extern int check_orphaned_services;
extern int check_orphaned_hosts;
extern int check_service_freshness;
extern int check_host_freshness;
extern int auto_reschedule_checks;
extern int additional_freshness_latency;
extern int check_for_updates;
extern int bare_update_check;
extern time_t last_update_check;
extern unsigned long update_uid;
extern int update_available;
extern char *last_program_version;
extern char *new_program_version;
extern int use_aggressive_host_checking;
extern time_t cached_host_check_horizon;
extern time_t cached_service_check_horizon;
extern int enable_predictive_host_dependency_checks;
extern int enable_predictive_service_dependency_checks;
extern int soft_state_dependencies;
extern int retain_state_information;
extern int retention_update_interval;
extern int use_retained_program_state;
extern int use_retained_scheduling_info;
extern int retention_scheduling_horizon;
extern char *retention_file;
extern unsigned long retained_host_attribute_mask;
extern unsigned long retained_service_attribute_mask;
extern unsigned long retained_contact_host_attribute_mask;
extern unsigned long retained_contact_service_attribute_mask;
extern unsigned long retained_process_host_attribute_mask;
extern unsigned long retained_process_service_attribute_mask;
extern int translate_passive_host_checks;
extern int passive_host_checks_are_soft;
extern int status_update_interval;
extern char *retention_file;
extern int time_change_threshold;
extern unsigned long event_broker_options;
extern double low_service_flap_threshold;
extern double high_service_flap_threshold;
extern double low_host_flap_threshold;
extern double high_host_flap_threshold;
extern int use_large_installation_tweaks;
extern int enable_environment_macros;
extern int free_child_process_memory;
extern int child_processes_fork_twice;
extern char *use_timezone;
extern time_t max_check_result_file_age;
extern char *debug_file;
extern int debug_level;
extern int debug_verbosity;
extern unsigned long max_debug_file_size;
extern int allow_empty_hostgroup_assignment;
extern int host_down_disable_service_checks;
extern int service_skip_check_dependency_status;
extern int service_skip_check_parent_status;
extern int service_skip_check_host_down_status;
extern int host_skip_check_dependency_status;
extern time_t last_program_stop;
extern time_t event_start;
extern int sigshutdown, sigrestart;
extern int currently_running_service_checks;
extern int currently_running_host_checks;
extern unsigned long next_event_id;
extern unsigned long next_problem_id;
extern unsigned long next_comment_id;
extern unsigned long next_notification_id;
extern unsigned long modified_process_attributes;
extern unsigned long modified_host_process_attributes;
extern unsigned long modified_service_process_attributes;
extern squeue_t *nagios_squeue;
extern iobroker_set *nagios_iobs;
extern struct check_stats check_statistics[MAX_CHECK_STATS_TYPES];
/*** perfdata variables ***/
extern int perfdata_timeout;
extern char *host_perfdata_command;
extern char *service_perfdata_command;
extern char *host_perfdata_file_template;
extern char *service_perfdata_file_template;
extern char *host_perfdata_file;
extern char *service_perfdata_file;
extern int host_perfdata_file_append;
extern int service_perfdata_file_append;
extern int host_perfdata_file_pipe;
extern int service_perfdata_file_pipe;
extern unsigned long host_perfdata_file_processing_interval;
extern unsigned long service_perfdata_file_processing_interval;
extern char *host_perfdata_file_processing_command;
extern char *service_perfdata_file_processing_command;
extern int host_perfdata_process_empty_results;
extern int service_perfdata_process_empty_results;
/*** end perfdata variables */
extern struct notify_list *notification_list;
extern struct check_engine nagios_check_engine;
/*
* Everything we need to keep system load in check.
* Don't use this from modules.
*/
struct load_control {
time_t last_check; /* last time we checked the real load */
time_t last_change; /* last time we changed settings */
time_t check_interval; /* seconds between load checks */
double load[3]; /* system load, as reported by getloadavg() */
float backoff_limit; /* limit we must reach before we back off */
float rampup_limit; /* limit we must reach before we ramp back up */
unsigned int backoff_change; /* backoff by this much */
unsigned int rampup_change; /* ramp up by this much */
unsigned int changes; /* number of times we've changed settings */
unsigned int jobs_max; /* upper setting for jobs_limit */
unsigned int jobs_limit; /* current limit */
unsigned int jobs_min; /* lower setting for jobs_limit */
unsigned int jobs_running; /* jobs currently running */
unsigned int nproc_limit; /* rlimit for user processes */
unsigned int nofile_limit; /* rlimit for open files */
unsigned int options; /* various option flags */
};
extern struct load_control loadctl;
/* options for load control */
#define LOADCTL_ENABLED (1 << 0)
/************* 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) */
/******************* 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
/****************** 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 8
/**************** 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) */
/*
* VERSIONFIX: Make EVENT_SLEEP and EVENT_USER_FUNCTION appear
* linearly in order.
*/
#define EVENT_TYPE_STR(type) ( \
type == EVENT_SERVICE_CHECK ? "SERVICE_CHECK" : \
type == EVENT_COMMAND_CHECK ? "COMMAND_CHECK" : \
type == EVENT_LOG_ROTATION ? "LOG_ROTATION" : \
type == EVENT_PROGRAM_SHUTDOWN ? "PROGRAM_SHUTDOWN" : \
type == EVENT_PROGRAM_RESTART ? "PROGRAM_RESTART" : \
type == EVENT_CHECK_REAPER ? "CHECK_REAPER" : \
type == EVENT_ORPHAN_CHECK ? "ORPHAN_CHECK" : \
type == EVENT_RETENTION_SAVE ? "RETENTION_SAVE" : \
type == EVENT_STATUS_SAVE ? "STATUS_SAVE" : \
type == EVENT_SCHEDULED_DOWNTIME ? "SCHEDULED_DOWNTIME" : \
type == EVENT_SFRESHNESS_CHECK ? "SFRESHNESS_CHECK" : \
type == EVENT_EXPIRE_DOWNTIME ? "EXPIRE_DOWNTIME" : \
type == EVENT_HOST_CHECK ? "HOST_CHECK" : \
type == EVENT_HFRESHNESS_CHECK ? "HFRESHNESS_CHECK" : \
type == EVENT_RESCHEDULE_CHECKS ? "RESCHEDULE_CHECKS" : \
type == EVENT_EXPIRE_COMMENT ? "EXPIRE_COMMENT" : \
type == EVENT_CHECK_PROGRAM_UPDATE ? "CHECK_PROGRAM_UPDATE" : \
type == EVENT_SLEEP ? "SLEEP" : \
type == EVENT_USER_FUNCTION ? "USER_FUNCTION" : \
"UNKNOWN" \
)
/******* 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 */
NAGIOS_BEGIN_DECL
/* useful for hosts and services to determine time 'til next check */
#define normal_check_window(o) ((time_t)(o->check_interval * interval_length))
#define retry_check_window(o) ((time_t)(o->retry_interval * interval_length))
#define check_window(o) \
((o->current_state && o->state_type == SOFT_STATE) ? \
retry_check_window(o) : \
normal_check_window(o))
/******************** FUNCTIONS **********************/
extern int set_loadctl_options(char *opts, unsigned int len);
/* silly helpers useful pretty much all over the place */
extern const char *service_state_name(int state);
extern const char *host_state_name(int state);
extern const char *state_type_name(int state_type);
extern const char *check_type_name(int check_type);
extern const char *check_result_source(check_result *cr);
#ifdef ENABLE_NERD
/** Nerd subscription type */
struct nerd_subscription {
int sd;
struct nerd_channel *chan;
char *format; /* requested format (macro string) for this subscription */
};
/*** Nagios Event Radio Dispatcher functions ***/
extern int nerd_init(void);
extern int nerd_mkchan(const char *name, const char *description, int (*handler)(int, void *), unsigned int callbacks);
extern int nerd_cancel_subscriber(int sd);
extern int nerd_get_channel_id(const char *chan_name);
extern objectlist *nerd_get_subscriptions(int chan_id);
extern int nerd_broadcast(unsigned int chan_id, void *buf, unsigned int len);
#endif
/*** Query Handler functions, types and macros*/
typedef int (*qh_handler)(int, char *, unsigned int);
extern int dump_event_stats(int sd);
/* return codes for query_handlers() */
#define QH_OK 0 /* keep listening */
#define QH_CLOSE 1 /* we should close the socket */
#define QH_INVALID 2 /* invalid query. Log and close */
#define QH_TAKEOVER 3 /* handler will take full control. de-register but don't close */
extern int qh_init(const char *path);
extern void qh_deinit(const char *path);
extern int qh_register_handler(const char *name, const char *description, unsigned int options, qh_handler handler);
extern const char *qh_strerror(int code);
/**** 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 */
void init_main_cfg_vars(int); /* Initialize the non-shared main configuration variables */
/**** Event Queue Functions ****/
int init_event_queue(void); /* creates the queue nagios_squeue */
timed_event *schedule_new_event(int, int, time_t, int, unsigned long, void *, int, void *, void *, int); /* schedules a new timed event */
void reschedule_event(squeue_t *sq, timed_event *event); /* reschedules an event */
void add_event(squeue_t *sq, timed_event *event); /* adds an event to the execution queue */
void remove_event(squeue_t *sq, timed_event *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 */
/**** IPC Functions ****/
int process_check_result_queue(char *);
int process_check_result_file(char *);
int process_check_result(check_result *);
int delete_check_result_file(char *);
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_parents(service *svc); /* checks service parents */
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, int); /* 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, int); /* 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 check_host_check_viability(host *, int, int *, time_t *);
int adjust_host_check_attempt(host *, int);
int determine_host_reachability(host *);
int perform_on_demand_host_check(host *, int *, int, int, unsigned long);
int execute_sync_host_check(host *);
int run_scheduled_host_check(host *, int, double);
int run_async_host_check(host *, int, double, int, int, int *, time_t *);
int handle_async_host_check_result(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 Functions *****/
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 ****/
const char *notification_reason_name(unsigned int reason_type);
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 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 *);
#ifdef DETECT_RLIMIT_PROBLEM
void rlimit_problem_detection(int);
#endif
/**
* Unescapes newlines and backslashes in a check result output string read from
* a source that uses newlines as a delimiter (e.g., files in the checkresults
* spool dir, or the command pipe).
* @note: There is an unescape_newlines() in cgi/cgiutils.c that unescapes more
* than '\\' and '\n' in place. Since this function is specifically intended
* for processing escaped plugin output, we'll use a more specific name to
* avoid confusion and conflicts.
* @param rawbuf Input string tp unescape.
* @return An unescaped copy of rawbuf in a newly allocated string, or NULL if
* rawbuf is NULL or no memory could be allocated for the new string.
*/
char *unescape_check_result_output(const char *rawbuf);
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 reschedule_within_timeperiod(time_t, timeperiod*, time_t);
time_t get_next_log_rotation_time(void); /* determine the next time to schedule a log rotation */
int dbuf_init(dbuf *, int);
int dbuf_free(dbuf *);
int dbuf_strcat(dbuf *, const 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 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 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 */
void clear_host_flapping_state(host *); /* clears the flapping state for a specific host */
void clear_service_flapping_state(service *); /* clears the flapping state for a specific service */
int launch_command_file_worker(void);
int shutdown_command_file_worker(void);
char *get_program_version(void);
char *get_program_modification_date(void);
NAGIOS_END_DECL
#endif
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