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NetBSD/usr.sbin/cron/cron.h

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/* $NetBSD: cron.h,v 1.5 2008/02/16 07:26:00 matt Exp $ */
/* Copyright 1988,1990,1993,1994 by Paul Vixie
* All rights reserved
*
* Distribute freely, except: don't remove my name from the source or
* documentation (don't take credit for my work), mark your changes (don't
* get me blamed for your possible bugs), don't alter or remove this
* notice. May be sold if buildable source is provided to buyer. No
* warrantee of any kind, express or implied, is included with this
* software; use at your own risk, responsibility for damages (if any) to
* anyone resulting from the use of this software rests entirely with the
* user.
*
* Send bug reports, bug fixes, enhancements, requests, flames, etc., and
* I'll try to keep a version up to date. I can be reached as follows:
* Paul Vixie <paul@vix.com> uunet!decwrl!vixie!paul
*/
/* cron.h - header for vixie's cron
*
* Id: cron.h,v 2.10 1994/01/15 20:43:43 vixie Exp
*
* vix 14nov88 [rest of log is in RCS]
* vix 14jan87 [0 or 7 can be sunday; thanks, mwm@berkeley]
* vix 30dec86 [written]
*/
/* reorder these #include's at your peril */
#include <sys/types.h>
#include <sys/param.h>
#include "compat.h"
#include <stdio.h>
#include <ctype.h>
#include <bitstring.h>
#include <pwd.h>
#include <sys/wait.h>
#include "pathnames.h"
#include "config.h"
#include "externs.h"
/* these are really immutable, and are
* defined for symbolic convenience only
* TRUE, FALSE, and ERR must be distinct
* ERR must be < OK.
*/
#define TRUE 1
#define FALSE 0
/* system calls return this on success */
#define OK 0
/* or this on error */
#define ERR (-1)
/* turn this on to get '-x' code */
#ifndef DEBUGGING
#define DEBUGGING FALSE
#endif
#define READ_PIPE 0 /* which end of a pipe pair do you read? */
#define WRITE_PIPE 1 /* or write to? */
#define STDIN 0 /* what is stdin's file descriptor? */
#define STDOUT 1 /* stdout's? */
#define STDERR 2 /* stderr's? */
#define ERROR_EXIT 1 /* exit() with this will scare the shell */
#define OK_EXIT 0 /* exit() with this is considered 'normal' */
#define MAX_FNAME 100 /* max length of internally generated fn */
#define MAX_COMMAND 1000 /* max length of internally generated cmd */
#define MAX_ENVSTR 1000 /* max length of envvar=value\0 strings */
#define MAX_TEMPSTR 100 /* obvious */
#define MAX_UNAME 20 /* max length of username, should be overkill */
#define ROOT_UID 0 /* don't change this, it really must be root */
#define ROOT_USER "root" /* ditto */
/* NOTE: these correspond to DebugFlagNames,
* defined below.
*/
#define DEXT 0x0001 /* extend flag for other debug masks */
#define DSCH 0x0002 /* scheduling debug mask */
#define DPROC 0x0004 /* process control debug mask */
#define DPARS 0x0008 /* parsing debug mask */
#define DLOAD 0x0010 /* database loading debug mask */
#define DMISC 0x0020 /* misc debug mask */
#define DTEST 0x0040 /* test mode: don't execute any commands */
#define DBIT 0x0080 /* bit twiddling shown (long) */
#define CRON_TAB(u) "%s/%s", SPOOL_DIR, u
#define REG register
#define PPC_NULL ((const char * const *)NULL)
#ifndef MAXHOSTNAMELEN
#define MAXHOSTNAMELEN 64
#endif
#define Skip_Blanks(c, f) \
while (c == '\t' || c == ' ') \
c = get_char(f);
#define Skip_Nonblanks(c, f) \
while (c!='\t' && c!=' ' && c!='\n' && c != EOF) \
c = get_char(f);
#define Skip_Line(c, f) \
do {c = get_char(f);} while (c != '\n' && c != EOF);
#if DEBUGGING
# define Debug(mask, message) \
if ( (DebugFlags & (mask) ) == (mask) ) \
printf message;
#else /* !DEBUGGING */
# define Debug(mask, message) \
;
#endif /* DEBUGGING */
#define MkLower(ch) (isupper(ch) ? tolower(ch) : ch)
#define MkUpper(ch) (islower(ch) ? toupper(ch) : ch)
#define Set_LineNum(ln) {Debug(DPARS|DEXT,("linenum=%d\n",ln)); \
LineNumber = ln; \
}
#define FIRST_MINUTE 0
#define LAST_MINUTE 59
#define MINUTE_COUNT (LAST_MINUTE - FIRST_MINUTE + 1)
#define FIRST_HOUR 0
#define LAST_HOUR 23
#define HOUR_COUNT (LAST_HOUR - FIRST_HOUR + 1)
#define FIRST_DOM 1
#define LAST_DOM 31
#define DOM_COUNT (LAST_DOM - FIRST_DOM + 1)
#define FIRST_MONTH 1
#define LAST_MONTH 12
#define MONTH_COUNT (LAST_MONTH - FIRST_MONTH + 1)
/* note on DOW: 0 and 7 are both Sunday, for compatibility reasons. */
#define FIRST_DOW 0
#define LAST_DOW 7
#define DOW_COUNT (LAST_DOW - FIRST_DOW + 1)
/* each user's crontab will be held as a list of
* the following structure.
*
* These are the cron commands.
*/
typedef struct _entry {
struct _entry *next;
uid_t uid;
gid_t gid;
char **envp;
char *cmd;
bitstr_t bit_decl(minute, MINUTE_COUNT);
bitstr_t bit_decl(hour, HOUR_COUNT);
bitstr_t bit_decl(dom, DOM_COUNT);
bitstr_t bit_decl(month, MONTH_COUNT);
bitstr_t bit_decl(dow, DOW_COUNT);
int flags;
#define DOM_STAR 0x01
#define DOW_STAR 0x02
#define WHEN_REBOOT 0x04
} entry;
/* the crontab database will be a list of the
* following structure, one element per user
* plus one for the system.
*
* These are the crontabs.
*/
typedef struct _user {
struct _user *next, *prev; /* links */
char *name;
time_t mtime; /* last modtime of crontab */
entry *crontab; /* this person's crontab */
} user;
typedef struct _cron_db {
user *head, *tail; /* links */
time_t mtime; /* last modtime on spooldir */
} cron_db;
void set_cron_uid(void),
set_cron_cwd(void),
load_database(cron_db *),
open_logfile(void),
sigpipe_func(void),
job_add(entry *, user *),
do_command(entry *, user *),
link_user(cron_db *, user *),
unlink_user(cron_db *, user *),
free_user(user *),
env_free(char **),
unget_char(int, FILE *),
free_entry(entry *),
acquire_daemonlock(int),
skip_comments(FILE *),
log_it(const char *, int, const char *, const char *),
log_close(void);
int job_runqueue(void),
set_debug_flags(char *),
get_char(FILE *),
get_string(char *, int, FILE *, const char *),
swap_uids(void),
load_env(char *, FILE *),
cron_pclose(FILE *),
strcmp_until(const char *, const char *, int),
allowed(char *),
strdtb(char *);
char *env_get(const char *, char **),
*arpadate(time_t *),
*mkprints(unsigned char *, unsigned int),
*first_word(char *, const char *),
**env_init(void),
**env_copy(char **),
**env_set(char **, char *);
user *load_user(int, struct passwd *, const char *),
*find_user(cron_db *, const char *);
entry *load_entry(FILE *, void (*)(const char *),
struct passwd *, char **);
FILE *cron_popen(char *, const char *);
/* in the C tradition, we only create
* variables for the main program, just
* extern them elsewhere.
*/
#ifdef MAIN_PROGRAM
# if !defined(LINT) && !defined(lint)
const char * const copyright[] = {
"@(#) Copyright 1988,1989,1990,1993,1994 by Paul Vixie",
"@(#) All rights reserved"
};
# endif
const char * const MonthNames[] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
NULL
};
const char * const DowNames[] = {
"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun",
NULL
};
char *ProgramName;
int LineNumber;
time_t TargetTime;
# if DEBUGGING
int DebugFlags;
const char * const DebugFlagNames[] = { /* sync with #defines */
"ext", "sch", "proc", "pars", "load", "misc", "test", "bit",
NULL /* NULL must be last element */
};
# endif /* DEBUGGING */
#else /*MAIN_PROGRAM*/
extern const char
* const copyright[],
* const MonthNames[],
* const DowNames[];
extern char *ProgramName;
extern int LineNumber;
extern time_t TargetTime;
# if DEBUGGING
extern int DebugFlags;
extern const char
* const DebugFlagNames[];
# endif /* DEBUGGING */
#endif /*MAIN_PROGRAM*/
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