defs.h

   1
   2 /*
   3  * DEFS.H
   4  *
   5  * Copyright 1994-1998 Matthew Dillon (dillon@backplane.com)
   6  * Copyright 2009-2011 James Pryor <profjim@jimpryor.net>
   7  * May be distributed under the GNU General Public License
   8  */
   9
  10 /*
  11  * portability issues
  12  * 0. gcc defaults to _BSD_SOURCE and _POSIX_SOURCE
  13  * 1. need _POSIX_SOURCE or _XOPEN_SOURCE for getopt, fileno, sigaction
  14  * 2. need _XOPEN_SOURCE for strptime
  15  * 3. need _BSD_SOURCE for setenv, mk{d,s}temp, [v]snprintf, initgroups, strsep, strdup, setre{u,g}id, gethostname, perror
  16  * 4. use concat.c instead of requiring asprintf / _GNU_SOURCE
  17  */
  18
  19 #define _XOPEN_SOURCE 1
  20 #define _BSD_SOURCE 1
  21
  22 #include <sys/types.h>
  23 #include <sys/stat.h>
  24 #include <sys/ioctl.h>
  25 #include <sys/wait.h>
  26 #include <sys/resource.h>
  27 #include <stdlib.h>
  28 #include <stdarg.h>
  29 #include <errno.h>
  30 #include <dirent.h>
  31 #include <fcntl.h>
  32 #include <pwd.h>
  33 #ifndef S_SPLINT_S
  34 #include <unistd.h>
  35 #endif
  36 #include <grp.h>
  37 #include <syslog.h>
  38 #include <signal.h>
  39 #include <getopt.h>
  40 #include <err.h>
  41 #include <limits.h>
  42
  43 #include <time.h>
  44 #include <string.h>
  45 #include <stdio.h>
  46
  47 #define Prototype extern
  48 #define arysize(ary)    (sizeof(ary)/sizeof((ary)[0]))
  49
  50 #ifndef SCRONTABS
  51 #define SCRONTABS       "/etc/cron.d"
  52 #endif
  53 #ifndef CRONTABS
  54 #define CRONTABS        "/var/spool/cron/crontabs"
  55 #endif
  56 #ifndef CRONSTAMPS
  57 #define CRONSTAMPS      "/var/spool/cron/cronstamps"
  58 #endif
  59 #ifndef LOG_IDENT
  60 #define LOG_IDENT       "crond"
  61 #endif
  62 #ifndef TIMESTAMP_FMT
  63 #define TIMESTAMP_FMT   "%b %e %H:%M:%S"
  64 #endif
  65
  66 #ifndef LOG_LEVEL
  67 #define LOG_LEVEL LOG_NOTICE
  68 #endif
  69 #ifndef CRONSTAMP_FMT
  70 #define CRONSTAMP_FMT   "%Y-%m-%d %H:%M"
  71 #endif
  72 #ifndef CRONUPDATE
  73 #define CRONUPDATE      "cron.update"
  74 #endif
  75 #ifndef TMPDIR
  76 #define TMPDIR          "/tmp"
  77 #endif
  78
  79 #ifndef SENDMAIL
  80 #define SENDMAIL        "/usr/sbin/sendmail"
  81 #endif
  82 #ifndef SENDMAIL_ARGS
  83 #define SENDMAIL_ARGS   "-t", "-oem", "-i"
  84 #endif
  85 #ifndef PATH_VI
  86 #define PATH_VI         "/usr/bin/vi"   /* location of vi       */
  87 #endif
  88
  89 #ifndef ID_TAG
  90 #define ID_TAG                  "ID="
  91 #endif
  92 #ifndef WAIT_TAG
  93 #define WAIT_TAG                "AFTER="
  94 #endif
  95 #ifndef FREQ_TAG
  96 #define FREQ_TAG                "FREQ="
  97 #endif
  98
  99 #define HOURLY_FREQ             60 * 60
 100 #define DAILY_FREQ              24 * HOURLY_FREQ
 101 #define WEEKLY_FREQ             7 * DAILY_FREQ
 102 #define MONTHLY_FREQ    30 * DAILY_FREQ
 103 #define YEARLY_FREQ             365 * DAILY_FREQ
 104
 105 #define LOGHEADER TIMESTAMP_FMT " %%s " LOG_IDENT ": "
 106 #define LOCALE_LOGHEADER "%c %%s " LOG_IDENT ": "
 107
 108 /* Limits */
 109 #define MAXOPEN                 256             /* close fds < this limit */
 110 #define MAXLINES                256             /* max lines in non-root crontabs */
 111 #define SMALL_BUFFER    256
 112 #define RW_BUFFER               1024
 113 #define LOG_BUFFER              2048    /* max size of log line */
 114
 115
 116
 117
 118 typedef struct CronFile {
 119     struct CronFile *cf_Next;
 120     struct CronLine *cf_LineBase;
 121     char        *cf_DPath;      /* Directory path to cronfile */
 122     char        *cf_FileName;   /* Name of cronfile */
 123     char        *cf_UserName;   /* username to execute jobs as */
 124     int         cf_Ready;       /* bool: one or more jobs ready */
 125     int         cf_Running;     /* bool: one or more jobs running */
 126     int         cf_Deleted;     /* marked for deletion, ignore  */
 127 } CronFile;
 128
 129 typedef struct CronLine {
 130     struct CronLine *cl_Next;
 131     char        *cl_Shell;      /* shell command                        */
 132         char    *cl_Description;        /* either "<cl_Shell>" or "job <cl_JobName>" */
 133         char    *cl_JobName;    /* job name, if any                     */
 134         char    *cl_Timestamp;  /* path to timestamp file, if cl_Freq defined */
 135         struct  CronWaiter *cl_Waiters;
 136         struct  CronNotifier *cl_Notifs;
 137         int             cl_Freq;                /* 0 (use arrays),  minutes, -1 (noauto), -2 (startup)  */
 138         int             cl_Delay;               /* defaults to cl_Freq or hourly        */
 139         time_t  cl_LastRan;
 140         time_t  cl_NotUntil;
 141         int             cl_Pid;                 /* running pid, 0, or armed (-1), or waiting (-2) */
 142     int         cl_MailFlag;    /* running pid is for mail              */
 143     int         cl_MailPos;     /* 'empty file' size                    */
 144     char        cl_Mins[60];    /* 0-59                         */
 145     char        cl_Hrs[24];     /* 0-23                                 */
 146     char        cl_Days[32];    /* 1-31                                 */
 147     char        cl_Mons[12];    /* 0-11                         */
 148     char        cl_Dow[7];      /* 0-6, beginning sunday                */
 149 } CronLine;
 150
 151 typedef struct CronWaiter {
 152         struct  CronWaiter *cw_Next;
 153         struct  CronNotifier *cw_Notifier;
 154         struct  CronLine *cw_NotifLine;
 155         short   cw_Flag;
 156         int             cw_MaxWait;
 157 } CronWaiter;
 158
 159 typedef struct CronNotifier {
 160         struct  CronNotifier *cn_Next;
 161         struct  CronWaiter *cn_Waiter;
 162 } CronNotifier;
 163
 164 #include "protos.h"
 165