12311Sjkh/* Copyright 1988,1990,1993,1994 by Paul Vixie 22311Sjkh * All rights reserved 32311Sjkh * 42311Sjkh * Distribute freely, except: don't remove my name from the source or 52311Sjkh * documentation (don't take credit for my work), mark your changes (don't 62311Sjkh * get me blamed for your possible bugs), don't alter or remove this 72311Sjkh * notice. May be sold if buildable source is provided to buyer. No 82311Sjkh * warrantee of any kind, express or implied, is included with this 92311Sjkh * software; use at your own risk, responsibility for damages (if any) to 102311Sjkh * anyone resulting from the use of this software rests entirely with the 112311Sjkh * user. 122311Sjkh * 132311Sjkh * Send bug reports, bug fixes, enhancements, requests, flames, etc., and 142311Sjkh * I'll try to keep a version up to date. I can be reached as follows: 152311Sjkh * Paul Vixie <paul@vix.com> uunet!decwrl!vixie!paul 162311Sjkh */ 172311Sjkh 182311Sjkh/* cron.h - header for vixie's cron 192311Sjkh * 2050479Speter * $FreeBSD$ 212311Sjkh * 222311Sjkh * vix 14nov88 [rest of log is in RCS] 232311Sjkh * vix 14jan87 [0 or 7 can be sunday; thanks, mwm@berkeley] 242311Sjkh * vix 30dec86 [written] 252311Sjkh */ 262311Sjkh 272311Sjkh/* reorder these #include's at your peril */ 282311Sjkh 292311Sjkh#include <sys/types.h> 302311Sjkh#include <sys/param.h> 312311Sjkh#include "compat.h" 322311Sjkh 3329452Scharnier#include <bitstring.h> 3429452Scharnier#include <ctype.h> 3529452Scharnier#include <err.h> 3620573Spst#include <errno.h> 37149430Spjd#include <libutil.h> 382311Sjkh#include <pwd.h> 3929452Scharnier#include <signal.h> 4029452Scharnier#include <stdio.h> 4129452Scharnier#include <time.h> 422311Sjkh#include <sys/wait.h> 432311Sjkh 442311Sjkh#include "pathnames.h" 452311Sjkh#include "config.h" 462311Sjkh#include "externs.h" 472311Sjkh 482311Sjkh /* these are really immutable, and are 492311Sjkh * defined for symbolic convenience only 502311Sjkh * TRUE, FALSE, and ERR must be distinct 512311Sjkh * ERR must be < OK. 522311Sjkh */ 532311Sjkh#define TRUE 1 542311Sjkh#define FALSE 0 552311Sjkh /* system calls return this on success */ 562311Sjkh#define OK 0 572311Sjkh /* or this on error */ 582311Sjkh#define ERR (-1) 592311Sjkh 602311Sjkh /* turn this on to get '-x' code */ 612311Sjkh#ifndef DEBUGGING 622311Sjkh#define DEBUGGING FALSE 632311Sjkh#endif 642311Sjkh 652311Sjkh#define READ_PIPE 0 /* which end of a pipe pair do you read? */ 662311Sjkh#define WRITE_PIPE 1 /* or write to? */ 672311Sjkh#define STDIN 0 /* what is stdin's file descriptor? */ 682311Sjkh#define STDOUT 1 /* stdout's? */ 692311Sjkh#define STDERR 2 /* stderr's? */ 702311Sjkh#define ERROR_EXIT 1 /* exit() with this will scare the shell */ 712311Sjkh#define OK_EXIT 0 /* exit() with this is considered 'normal' */ 722311Sjkh#define MAX_FNAME 100 /* max length of internally generated fn */ 732311Sjkh#define MAX_COMMAND 1000 /* max length of internally generated cmd */ 742311Sjkh#define MAX_ENVSTR 1000 /* max length of envvar=value\0 strings */ 752311Sjkh#define MAX_TEMPSTR 100 /* obvious */ 762311Sjkh#define MAX_UNAME 20 /* max length of username, should be overkill */ 772311Sjkh#define ROOT_UID 0 /* don't change this, it really must be root */ 782311Sjkh#define ROOT_USER "root" /* ditto */ 79170890Syar#define SYS_NAME "*system*" /* magic owner name for system crontab */ 802311Sjkh 812311Sjkh /* NOTE: these correspond to DebugFlagNames, 822311Sjkh * defined below. 832311Sjkh */ 842311Sjkh#define DEXT 0x0001 /* extend flag for other debug masks */ 852311Sjkh#define DSCH 0x0002 /* scheduling debug mask */ 862311Sjkh#define DPROC 0x0004 /* process control debug mask */ 872311Sjkh#define DPARS 0x0008 /* parsing debug mask */ 882311Sjkh#define DLOAD 0x0010 /* database loading debug mask */ 892311Sjkh#define DMISC 0x0020 /* misc debug mask */ 902311Sjkh#define DTEST 0x0040 /* test mode: don't execute any commands */ 912311Sjkh#define DBIT 0x0080 /* bit twiddling shown (long) */ 922311Sjkh 932311Sjkh#define CRON_TAB(u) "%s/%s", SPOOL_DIR, u 942311Sjkh#define REG register 952311Sjkh#define PPC_NULL ((char **)NULL) 962311Sjkh 972311Sjkh#ifndef MAXHOSTNAMELEN 9869230Skris#define MAXHOSTNAMELEN 256 992311Sjkh#endif 1002311Sjkh 1012311Sjkh#define Skip_Blanks(c, f) \ 1022311Sjkh while (c == '\t' || c == ' ') \ 1032311Sjkh c = get_char(f); 1042311Sjkh 1052311Sjkh#define Skip_Nonblanks(c, f) \ 1062311Sjkh while (c!='\t' && c!=' ' && c!='\n' && c != EOF) \ 1072311Sjkh c = get_char(f); 1082311Sjkh 1092311Sjkh#define Skip_Line(c, f) \ 1102311Sjkh do {c = get_char(f);} while (c != '\n' && c != EOF); 1112311Sjkh 1122311Sjkh#if DEBUGGING 1132311Sjkh# define Debug(mask, message) \ 1142311Sjkh if ( (DebugFlags & (mask) ) == (mask) ) \ 1152311Sjkh printf message; 1162311Sjkh#else /* !DEBUGGING */ 1172311Sjkh# define Debug(mask, message) \ 1182311Sjkh ; 1192311Sjkh#endif /* DEBUGGING */ 1202311Sjkh 1212311Sjkh#define MkLower(ch) (isupper(ch) ? tolower(ch) : ch) 1222311Sjkh#define MkUpper(ch) (islower(ch) ? toupper(ch) : ch) 1232311Sjkh#define Set_LineNum(ln) {Debug(DPARS|DEXT,("linenum=%d\n",ln)); \ 1242311Sjkh LineNumber = ln; \ 1252311Sjkh } 1262311Sjkh 127242101Ssobomax#define FIRST_SECOND 0 128242101Ssobomax#define LAST_SECOND 59 129242101Ssobomax#define SECOND_COUNT (LAST_SECOND - FIRST_SECOND + 1) 130242101Ssobomax 1312311Sjkh#define FIRST_MINUTE 0 1322311Sjkh#define LAST_MINUTE 59 1332311Sjkh#define MINUTE_COUNT (LAST_MINUTE - FIRST_MINUTE + 1) 1342311Sjkh 1352311Sjkh#define FIRST_HOUR 0 1362311Sjkh#define LAST_HOUR 23 1372311Sjkh#define HOUR_COUNT (LAST_HOUR - FIRST_HOUR + 1) 1382311Sjkh 1392311Sjkh#define FIRST_DOM 1 1402311Sjkh#define LAST_DOM 31 1412311Sjkh#define DOM_COUNT (LAST_DOM - FIRST_DOM + 1) 1422311Sjkh 1432311Sjkh#define FIRST_MONTH 1 1442311Sjkh#define LAST_MONTH 12 1452311Sjkh#define MONTH_COUNT (LAST_MONTH - FIRST_MONTH + 1) 1462311Sjkh 1472311Sjkh/* note on DOW: 0 and 7 are both Sunday, for compatibility reasons. */ 1482311Sjkh#define FIRST_DOW 0 1492311Sjkh#define LAST_DOW 7 1502311Sjkh#define DOW_COUNT (LAST_DOW - FIRST_DOW + 1) 1512311Sjkh 15230895Sache#ifdef LOGIN_CAP 15330895Sache/* see init.c */ 15430895Sache#define RESOURCE_RC "daemon" 15530895Sache#endif 15630895Sache 1572311Sjkh /* each user's crontab will be held as a list of 1582311Sjkh * the following structure. 1592311Sjkh * 1602311Sjkh * These are the cron commands. 1612311Sjkh */ 1622311Sjkh 1632311Sjkhtypedef struct _entry { 1642311Sjkh struct _entry *next; 1658857Srgrimes uid_t uid; 1662311Sjkh gid_t gid; 16730895Sache#ifdef LOGIN_CAP 16830895Sache char *class; 16930895Sache#endif 1702311Sjkh char **envp; 1712311Sjkh char *cmd; 172242101Ssobomax bitstr_t bit_decl(second, SECOND_COUNT); 1732311Sjkh bitstr_t bit_decl(minute, MINUTE_COUNT); 1742311Sjkh bitstr_t bit_decl(hour, HOUR_COUNT); 1752311Sjkh bitstr_t bit_decl(dom, DOM_COUNT); 1762311Sjkh bitstr_t bit_decl(month, MONTH_COUNT); 1772311Sjkh bitstr_t bit_decl(dow, DOW_COUNT); 1782311Sjkh int flags; 1792311Sjkh#define DOM_STAR 0x01 1802311Sjkh#define DOW_STAR 0x02 1812311Sjkh#define WHEN_REBOOT 0x04 18274010Sbabkin#define RUN_AT 0x08 18374010Sbabkin#define NOT_UNTIL 0x10 184242101Ssobomax#define SEC_RES 0x20 18574010Sbabkin time_t lastrun; 1862311Sjkh} entry; 1872311Sjkh 1882311Sjkh /* the crontab database will be a list of the 1892311Sjkh * following structure, one element per user 1902311Sjkh * plus one for the system. 1912311Sjkh * 1922311Sjkh * These are the crontabs. 1932311Sjkh */ 1942311Sjkh 1952311Sjkhtypedef struct _user { 1962311Sjkh struct _user *next, *prev; /* links */ 1972311Sjkh char *name; 1982311Sjkh time_t mtime; /* last modtime of crontab */ 1992311Sjkh entry *crontab; /* this person's crontab */ 2002311Sjkh} user; 2012311Sjkh 2022311Sjkhtypedef struct _cron_db { 2032311Sjkh user *head, *tail; /* links */ 2042311Sjkh time_t mtime; /* last modtime on spooldir */ 2052311Sjkh} cron_db; 2062311Sjkh 2072311Sjkh 208173412Skevlovoid set_cron_uid(void), 209173412Skevlo set_cron_cwd(void), 210173412Skevlo load_database(cron_db *), 211173412Skevlo open_logfile(void), 212173412Skevlo sigpipe_func(void), 213173412Skevlo job_add(entry *, user *), 214173412Skevlo do_command(entry *, user *), 215173412Skevlo link_user(cron_db *, user *), 216173412Skevlo unlink_user(cron_db *, user *), 217173412Skevlo free_user(user *), 218173412Skevlo env_free(char **), 219173412Skevlo unget_char(int, FILE *), 220173412Skevlo free_entry(entry *), 221173412Skevlo skip_comments(FILE *), 222173412Skevlo log_it(char *, int, char *, char *), 223173412Skevlo log_close(void); 2242311Sjkh 225173412Skevloint job_runqueue(void), 226173412Skevlo set_debug_flags(char *), 227173412Skevlo get_char(FILE *), 228173412Skevlo get_string(char *, int, FILE *, char *), 229173412Skevlo swap_uids(void), 230184809Smatteo swap_uids_back(void), 231173412Skevlo load_env(char *, FILE *), 232173412Skevlo cron_pclose(FILE *), 233173412Skevlo strcmp_until(char *, char *, int), 234173412Skevlo allowed(char *), 235173412Skevlo strdtb(char *); 2362311Sjkh 237173412Skevlochar *env_get(char *, char **), 238173412Skevlo *arpadate(time_t *), 239173412Skevlo *mkprints(unsigned char *, unsigned int), 240173412Skevlo *first_word(char *, char *), 241173412Skevlo **env_init(void), 242173412Skevlo **env_copy(char **), 243173412Skevlo **env_set(char **, char *); 2442311Sjkh 245173412Skevlouser *load_user(int, struct passwd *, char *), 246173412Skevlo *find_user(cron_db *, char *); 2472311Sjkh 248184809Smatteoentry *load_entry(FILE *, void (*)(char *), 249173412Skevlo struct passwd *, char **); 2502311Sjkh 251173412SkevloFILE *cron_popen(char *, char *, entry *); 2522311Sjkh 2532311Sjkh 2542311Sjkh /* in the C tradition, we only create 2552311Sjkh * variables for the main program, just 2562311Sjkh * extern them elsewhere. 2572311Sjkh */ 2582311Sjkh 2592311Sjkh#ifdef MAIN_PROGRAM 2602311Sjkh# if !defined(LINT) && !defined(lint) 2612311Sjkhchar *copyright[] = { 2622311Sjkh "@(#) Copyright 1988,1989,1990,1993,1994 by Paul Vixie", 2632311Sjkh "@(#) All rights reserved" 2642311Sjkh }; 2652311Sjkh# endif 2662311Sjkh 2672311Sjkhchar *MonthNames[] = { 2682311Sjkh "Jan", "Feb", "Mar", "Apr", "May", "Jun", 2692311Sjkh "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", 2702311Sjkh NULL 2712311Sjkh }; 2722311Sjkh 2732311Sjkhchar *DowNames[] = { 2742311Sjkh "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun", 2752311Sjkh NULL 2762311Sjkh }; 2772311Sjkh 278180096Smarckchar *ProgramName, 279180096Smarck *defmailto; 2802311Sjkhint LineNumber; 281129280Syarunsigned Jitter, 282129280Syar RootJitter; 2832311Sjkhtime_t TargetTime; 2842311Sjkh 2852311Sjkh# if DEBUGGING 2862311Sjkhint DebugFlags; 2872311Sjkhchar *DebugFlagNames[] = { /* sync with #defines */ 2882311Sjkh "ext", "sch", "proc", "pars", "load", "misc", "test", "bit", 2892311Sjkh NULL /* NULL must be last element */ 2902311Sjkh }; 2912311Sjkh# endif /* DEBUGGING */ 2922311Sjkh#else /*MAIN_PROGRAM*/ 2932311Sjkhextern char *copyright[], 2942311Sjkh *MonthNames[], 2952311Sjkh *DowNames[], 296180096Smarck *ProgramName, 297180096Smarck *defmailto; 2982311Sjkhextern int LineNumber; 299129280Syarextern unsigned Jitter, 300129280Syar RootJitter; 3012311Sjkhextern time_t TargetTime; 302149430Spjdextern struct pidfh *pfh; 3032311Sjkh# if DEBUGGING 3042311Sjkhextern int DebugFlags; 3052311Sjkhextern char *DebugFlagNames[]; 3062311Sjkh# endif /* DEBUGGING */ 3072311Sjkh#endif /*MAIN_PROGRAM*/ 308