nagios-plugins/plugins/utils.h

#ifndef NP_UTILS_H
#define NP_UTILS_H
/* Header file for nagios plugins utils.c */

/* This file should be included in all plugins */

/* The purpose of this package is to provide safer alternatives to C
functions that might otherwise be vulnerable to hacking. This
currently includes a standard suite of validation routines to be sure
that an string argument acually converts to its intended type and a
suite of string handling routine that do their own memory management
in order to resist overflow attacks. In addition, a few functions are
provided to standardize version and error reporting across the entire
suite of plugins. */

/* Standardize version information, termination */

/* $Id$ */

void support (void);
char *clean_revstring (const char *);
void print_revision (const char *, const char *);
void die (int, const char *, ...) __attribute__((noreturn,format(printf, 2, 3)));

/* Handle timeouts */

#ifdef LOCAL_TIMEOUT_ALARM_HANDLER
extern unsigned int timeout_interval;
RETSIGTYPE timeout_alarm_handler (int);
#else
unsigned int timeout_interval = DEFAULT_SOCKET_TIMEOUT;
extern RETSIGTYPE timeout_alarm_handler (int);
#endif

time_t start_time, end_time;

/* Test input types */

int is_integer (char *);
int is_intpos (char *);
int is_intneg (char *);
int is_intnonneg (char *);
int is_intpercent (char *);

int is_numeric (char *);
int is_positive (char *);
int is_negative (char *);
int is_nonnegative (char *);
int is_percentage (char *);

int is_option (char *);

/* Generalized timer that will do milliseconds if available */
#ifndef HAVE_STRUCT_TIMEVAL
struct timeval {
	long tv_sec;        /* seconds */
	long tv_usec;  /* microseconds */
};
#endif

#define OUTSIDE 0
#define INSIDE  1

typedef struct range_struct {
	double	start;
	int	start_infinity;		/* FALSE (default) or TRUE */
	double	end;
	int	end_infinity;
	int	alert_on;		/* OUTSIDE (default) or INSIDE */
	} range;

typedef struct thresholds_struct {
	range	*warning;
	range	*critical;
	} thresholds;

range *parse_range_string (char *);
int _set_thresholds(thresholds **, char *, char *);
void set_thresholds(thresholds **, char *, char *);
int check_range(double, range *);
int get_status(double, thresholds *);

#ifndef HAVE_GETTIMEOFDAY
int gettimeofday(struct timeval *, struct timezone *);
#endif

double delta_time (struct timeval tv);
long deltime (struct timeval tv);

/* Handle strings safely */

void strip (char *);
char *strscpy (char *, const char *);
char *strnl (char *);
char *strpcpy (char *, const char *, const char *);
char *strpcat (char *, const char *, const char *);

int max_state (int a, int b);

void usage (const char *) __attribute__((noreturn));
void usage2(const char *, const char *) __attribute__((noreturn));
void usage3(const char *, int) __attribute__((noreturn));
void usage4(const char *);
void usage_va(const char *fmt, ...);

const char *state_text (int);

#define max(a,b) (((a)>(b))?(a):(b))
#define min(a,b) (((a)<(b))?(a):(b))

char *perfdata (const char *,
 long int,
 const char *,
 int,
 long int,
 int,
 long int,
 int,
 long int,
 int,
 long int);

char *fperfdata (const char *,
 double,
 const char *,
 int,
 double,
 int,
 double,
 int,
 double,
 int,
 double);

/* The idea here is that, although not every plugin will use all of these, 
   most will or should.  Therefore, for consistency, these very common 
   options should have only these meanings throughout the overall suite */

#define STD_LONG_OPTS \
{"version",no_argument,0,'V'},\
{"verbose",no_argument,0,'v'},\
{"help",no_argument,0,'h'},\
{"timeout",required_argument,0,'t'},\
{"critical",required_argument,0,'c'},\
{"warning",required_argument,0,'w'},\
{"hostname",required_argument,0,'H'}

#define COPYRIGHT "Copyright (c) %s Nagios Plugin Development Team\n\
\t<%s>\n\n"

#define UT_HLP_VRS "\
       %s (-h | --help) for detailed help\n\
       %s (-V | --version) for version information\n"

#define UT_HELP_VRSN "\
\nOptions:\n\
 -h, --help\n\
    Print detailed help screen\n\
 -V, --version\n\
    Print version information\n"

#define UT_HOST_PORT "\
 -H, --hostname=ADDRESS\n\
    Host name, IP Address, or unix socket (must be an absolute path)\n\
 -%c, --port=INTEGER\n\
    Port number (default: %s)\n"

#define UT_IPv46 "\
 -4, --use-ipv4\n\
    Use IPv4 connection\n\
 -6, --use-ipv6\n\
    Use IPv6 connection\n"

#define UT_VERBOSE "\
 -v, --verbose\n\
    Show details for command-line debugging (Nagios may truncate output)\n"

#define UT_WARN_CRIT "\
 -w, --warning=DOUBLE\n\
    Response time to result in warning status (seconds)\n\
 -c, --critical=DOUBLE\n\
    Response time to result in critical status (seconds)\n"

#define UT_WARN_CRIT_RANGE "\
 -w, --warning=RANGE\n\
    Warning range (format: start:end). Alert if outside this range\n\
 -c, --critical=RANGE\n\
    Critical range\n"

#define UT_TIMEOUT "\
 -t, --timeout=INTEGER\n\
    Seconds before connection times out (default: %d)\n"

#define UT_SUPPORT "\n\
Send email to nagios-users@lists.sourceforge.net if you have questions\n\
regarding use of this software. To submit patches or suggest improvements,\n\
send email to nagiosplug-devel@lists.sourceforge.net\n"

#define UT_NOWARRANTY "\n\
The nagios plugins come with ABSOLUTELY NO WARRANTY. You may redistribute\n\
copies of the plugins under the terms of the GNU General Public License.\n\
For more information about these matters, see the file named COPYING.\n"

#endif /* NP_UTILS_H */