lib/utils_base.h

   1 #ifndef _UTILS_BASE_
   2 #define _UTILS_BASE_
   3 /* Header file for Monitoring Plugins utils_base.c */
   4
   5 #include "sha1.h"
   6
   7 /* This file holds header information for thresholds - use this in preference to
   8    individual plugin logic */
   9
  10 /* This has not been merged with utils.h because of problems with
  11    timeout_interval when other utils_*.h files use utils.h */
  12
  13 /* Long term, add new functions to utils_base.h for common routines
  14    and utils_*.h for specific to plugin routines. If routines are
  15    placed in utils_*.h, then these can be tested with libtap */
  16
  17 #define OUTSIDE 0
  18 #define INSIDE  1
  19
  20 typedef struct range_struct {
  21         double  start;
  22         int     start_infinity;         /* FALSE (default) or TRUE */
  23         double  end;
  24         int     end_infinity;
  25         int     alert_on;               /* OUTSIDE (default) or INSIDE */
  26         } range;
  27
  28 typedef struct thresholds_struct {
  29         range   *warning;
  30         range   *critical;
  31         } thresholds;
  32
  33 #define NP_STATE_FORMAT_VERSION 1
  34
  35 typedef struct state_data_struct {
  36         time_t  time;
  37         void    *data;
  38         int     length; /* Of binary data */
  39         } state_data;
  40
  41
  42 typedef struct state_key_struct {
  43         char       *name;
  44         char       *plugin_name;
  45         int        data_version;
  46         char       *_filename;
  47         state_data *state_data;
  48         } state_key;
  49
  50 typedef struct np_struct {
  51         char      *plugin_name;
  52         state_key *state;
  53         int       argc;
  54         char      **argv;
  55         } monitoring_plugin;
  56
  57 range *parse_range_string (char *);
  58 int _set_thresholds(thresholds **, char *, char *);
  59 void set_thresholds(thresholds **, char *, char *);
  60 void print_thresholds(const char *, thresholds *);
  61 int check_range(double, range *);
  62 int get_status(double, thresholds *);
  63
  64 /* All possible characters in a threshold range */
  65 #define NP_THRESHOLDS_CHARS "-0123456789.:@~"
  66
  67 char *np_escaped_string (const char *);
  68
  69 void die (int, const char *, ...) __attribute__((noreturn,format(printf, 2, 3)));
  70
  71 /* Return codes for _set_thresholds */
  72 #define NP_RANGE_UNPARSEABLE 1
  73 #define NP_WARN_WITHIN_CRIT 2
  74
  75 /* a simple check to see if we're running as root.
  76  * returns zero on failure, nonzero on success */
  77 int np_check_if_root(void);
  78
  79 /* mp_suid() returns true if the real and effective uids differs, such as when
  80  * running a suid plugin */
  81 #define mp_suid() (getuid() != geteuid())
  82
  83 /*
  84  * Extract the value from key/value pairs, or return NULL. The value returned
  85  * can be free()ed.
  86  * This function can be used to parse NTP control packet data and performance
  87  * data strings.
  88  */
  89 char *np_extract_value(const char*, const char*, char);
  90
  91 /*
  92  * Same as np_extract_value with separator suitable for NTP control packet
  93  * payloads (comma)
  94  */
  95 #define np_extract_ntpvar(l, n) np_extract_value(l, n, ',')
  96
  97 /*
  98  * Read a string representing a state (ok, warning... or numeric: 0, 1) and
  99  * return the corresponding NP_STATE or ERROR)
 100  */
 101 int mp_translate_state (char *);
 102
 103 void np_enable_state(char *, int);
 104 state_data *np_state_read();
 105 void np_state_write_string(time_t, char *);
 106
 107 void np_init(char *, int argc, char **argv);
 108 void np_set_args(int argc, char **argv);
 109 void np_cleanup();
 110
 111 #endif /* _UTILS_BASE_ */