tab.c

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/*      tab.c - process crontabs and create in-core crontab data
 *                                                      Author: Kees J. Bot
 *                                                              7 Dec 1996
 * Changes:
 * 17 Jul 2000 by Philip Homburg
 *      - Tab_reschedule() rewritten (and fixed).
 */
#define nil ((void*)0)
#include <sys/types.h>
#include <assert.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <limits.h>
#include <time.h>
#include <dirent.h>
#include <sys/stat.h>
#include "misc.h"
#include "tab.h"

static int nextbit(bitmap_t map, int bit)
/* Return the next bit set in 'map' from 'bit' onwards, cyclic. */
{
        for (;;) {
                bit= (bit+1) & 63;
                if (bit_isset(map, bit)) break;
        }
        return bit;
}

void tab_reschedule(cronjob_t *job)
/* Reschedule one job.  Compute the next time to run the job in job->rtime.
 */
{
        struct tm prevtm, nexttm, tmptm;
        time_t nodst_rtime, dst_rtime;

        /* AT jobs are only run once. */
        if (job->atjob) { job->rtime= NEVER; return; }

        /* Was the job scheduled late last time? */
        if (job->late) job->rtime= now;

        prevtm= *localtime(&job->rtime);
        prevtm.tm_sec= 0;

        nexttm= prevtm;
        nexttm.tm_min++;        /* Minimal increment */

        for (;;)
        {
                if (nexttm.tm_min > 59)
                {
                        nexttm.tm_min= 0;
                        nexttm.tm_hour++;
                }
                if (nexttm.tm_hour > 23)
                {
                        nexttm.tm_min= 0;
                        nexttm.tm_hour= 0;
                        nexttm.tm_mday++;
                }
                if (nexttm.tm_mday > 31)
                {
                        nexttm.tm_hour= nexttm.tm_min= 0;
                        nexttm.tm_mday= 1;
                        nexttm.tm_mon++;
                }
                if (nexttm.tm_mon >= 12)
                {
                        nexttm.tm_hour= nexttm.tm_min= 0;
                        nexttm.tm_mday= 1;
                        nexttm.tm_mon= 0;
                        nexttm.tm_year++;
                }

                /* Verify tm_year. A crontab entry cannot restrict tm_year
                 * directly. However, certain dates (such as Feb, 29th) do
                 * not occur every year. We limit the difference between
                 * nexttm.tm_year and prevtm.tm_year to detect impossible dates
                 * (e.g, Feb, 31st). In theory every date occurs within a
                 * period of 4 years. However, some years at the end of a 
                 * century are not leap years (e.g, the year 2100). An extra
                 * factor of 2 should be enough.
                 */
                if (nexttm.tm_year-prevtm.tm_year > 2*4)
                {
                        job->rtime= NEVER;
                        return;                 /* Impossible combination */
                }

                if (!job->do_wday)
                {
                        /* Verify the mon and mday fields. If do_wday and
                         * do_mday are both true we have to merge both
                         * schedules. This is done after the call to mktime.
                         */
                        if (!bit_isset(job->mon, nexttm.tm_mon))
                        {
                                /* Clear other fields */
                                nexttm.tm_mday= 1;
                                nexttm.tm_hour= nexttm.tm_min= 0;

                                nexttm.tm_mon++;
                                continue;
                        }

                        /* Verify mday */
                        if (!bit_isset(job->mday, nexttm.tm_mday))
                        {
                                /* Clear other fields */
                                nexttm.tm_hour= nexttm.tm_min= 0;

                                nexttm.tm_mday++;
                                continue;
                        }
                }

                /* Verify hour */
                if (!bit_isset(job->hour, nexttm.tm_hour))
                {
                        /* Clear tm_min field */
                        nexttm.tm_min= 0;

                        nexttm.tm_hour++;
                        continue;
                }

                /* Verify min */
                if (!bit_isset(job->min, nexttm.tm_min))
                {
                        nexttm.tm_min++;
                        continue;
                }

                /* Verify that we don't have any problem with DST. Try
                 * tm_isdst=0 first. */
                tmptm= nexttm;
                tmptm.tm_isdst= 0;
#if 0
                fprintf(stderr, 
        "tab_reschedule: trying %04d-%02d-%02d %02d:%02d:%02d isdst=0\n",
                                1900+nexttm.tm_year, nexttm.tm_mon+1,
                                nexttm.tm_mday, nexttm.tm_hour,
                                nexttm.tm_min, nexttm.tm_sec);
#endif
                nodst_rtime= job->rtime= mktime(&tmptm);
                if (job->rtime == -1) {
                        /* This should not happen. */
                        log(LOG_ERR,
                        "mktime failed for %04d-%02d-%02d %02d:%02d:%02d",
                                1900+nexttm.tm_year, nexttm.tm_mon+1,
                                nexttm.tm_mday, nexttm.tm_hour,
                                nexttm.tm_min, nexttm.tm_sec);
                        job->rtime= NEVER;
                        return; 
                }
                tmptm= *localtime(&job->rtime);
                if (tmptm.tm_hour != nexttm.tm_hour ||
                        tmptm.tm_min != nexttm.tm_min)
                {
                        assert(tmptm.tm_isdst);
                        tmptm= nexttm;
                        tmptm.tm_isdst= 1;
#if 0
                        fprintf(stderr, 
        "tab_reschedule: trying %04d-%02d-%02d %02d:%02d:%02d isdst=1\n",
                                1900+nexttm.tm_year, nexttm.tm_mon+1,
                                nexttm.tm_mday, nexttm.tm_hour,
                                nexttm.tm_min, nexttm.tm_sec);
#endif
                        dst_rtime= job->rtime= mktime(&tmptm);
                        if (job->rtime == -1) {
                                /* This should not happen. */
                                log(LOG_ERR,
                        "mktime failed for %04d-%02d-%02d %02d:%02d:%02d\n",
                                        1900+nexttm.tm_year, nexttm.tm_mon+1,
                                        nexttm.tm_mday, nexttm.tm_hour,
                                        nexttm.tm_min, nexttm.tm_sec);
                                job->rtime= NEVER;
                                return; 
                        }
                        tmptm= *localtime(&job->rtime);
                        if (tmptm.tm_hour != nexttm.tm_hour ||
                                tmptm.tm_min != nexttm.tm_min)
                        {
                                assert(!tmptm.tm_isdst);
                                /* We have a problem. This time neither
                                 * exists with DST nor without DST.
                                 * Use the latest time, which should be
                                 * nodst_rtime.
                                 */
                                assert(nodst_rtime > dst_rtime);
                                job->rtime= nodst_rtime;
#if 0
                                fprintf(stderr,
                        "During DST trans. %04d-%02d-%02d %02d:%02d:%02d\n",
                                        1900+nexttm.tm_year, nexttm.tm_mon+1,
                                        nexttm.tm_mday, nexttm.tm_hour,
                                        nexttm.tm_min, nexttm.tm_sec);
#endif
                        }
                }

                /* Verify this the combination (tm_year, tm_mon, tm_mday). */
                if (tmptm.tm_mday != nexttm.tm_mday ||
                        tmptm.tm_mon != nexttm.tm_mon ||
                        tmptm.tm_year != nexttm.tm_year)
                {
                        /* Wrong day */
#if 0
                        fprintf(stderr, "Wrong day\n");
#endif
                        nexttm.tm_hour= nexttm.tm_min= 0;
                        nexttm.tm_mday++;
                        continue;
                }

                /* Check tm_wday */
                if (job->do_wday && bit_isset(job->wday, tmptm.tm_wday))
                {
                        /* OK, wday matched */
                        break;
                }

                /* Check tm_mday */
                if (job->do_mday && bit_isset(job->mon, tmptm.tm_mon) &&
                        bit_isset(job->mday, tmptm.tm_mday))
                {
                        /* OK, mon and mday matched */
                        break;
                }

                if (!job->do_wday && !job->do_mday)
                {
                        /* No need to match wday and mday */
                        break;
                }

                /* Wrong day */
#if 0
                fprintf(stderr, "Wrong mon+mday or wday\n");
#endif
                nexttm.tm_hour= nexttm.tm_min= 0;
                nexttm.tm_mday++;
        }
#if 0
        fprintf(stderr, "Using %04d-%02d-%02d %02d:%02d:%02d \n",
                1900+nexttm.tm_year, nexttm.tm_mon+1, nexttm.tm_mday,
                nexttm.tm_hour, nexttm.tm_min, nexttm.tm_sec);
        tmptm= *localtime(&job->rtime);
        fprintf(stderr, "Act. %04d-%02d-%02d %02d:%02d:%02d isdst=%d\n",
                1900+tmptm.tm_year, tmptm.tm_mon+1, tmptm.tm_mday,
                tmptm.tm_hour, tmptm.tm_min, tmptm.tm_sec,
                tmptm.tm_isdst);
#endif


        /* Is job issuing lagging behind with the progress of time? */
        job->late= (job->rtime < now);

        /* The result is in job->rtime. */
        if (job->rtime < next) next= job->rtime;
}

#define isdigit(c)      ((unsigned) ((c) - '0') < 10)

static char *get_token(char **ptr)
/* Return a pointer to the next token in a string.  Move *ptr to the end of
 * the token, and return a pointer to the start.  If *ptr == start of token
 * then we're stuck against a newline or end of string.
 */
{
        char *start, *p;

        p= *ptr;
        while (*p == ' ' || *p == '\t') p++;

        start= p;
        while (*p != ' ' && *p != '\t' && *p != '\n' && *p != 0) p++;
        *ptr= p;
        return start;
}

static int range_parse(char *file, char *data, bitmap_t map,
        int min, int max, int *wildcard)
/* Parse a comma separated series of 'n', 'n-m' or 'n:m' numbers.  'n'
 * includes number 'n' in the bit map, 'n-m' includes all numbers between
 * 'n' and 'm' inclusive, and 'n:m' includes 'n+k*m' for any k if in range.
 * Numbers must fall between 'min' and 'max'.  A '*' means all numbers.  A
 * '?' is allowed as a synonym for the current minute, which only makes sense
 * in the minute field, i.e. max must be 59.  Return true iff parsed ok.
 */
{
        char *p;
        int end;
        int n, m;

        /* Clear all bits. */
        for (n= 0; n < 8; n++) map[n]= 0;

        p= data;
        while (*p != ' ' && *p != '\t' && *p != '\n' && *p != 0) p++;
        end= *p;
        *p= 0;
        p= data;

        if (*p == 0) {
                log(LOG_ERR, "%s: not enough time fields\n", file);
                return 0;
        }

        /* Is it a '*'? */
        if (p[0] == '*' && p[1] == 0) {
                for (n= min; n <= max; n++) bit_set(map, n);
                p[1]= end;
                *wildcard= 1;
                return 1;
        }
        *wildcard= 0;

        /* Parse a comma separated series of numbers or ranges. */
        for (;;) {
                if (*p == '?' && max == 59 && p[1] != '-') {
                        n= localtime(&now)->tm_min;
                        p++;
                } else {
                        if (!isdigit(*p)) goto syntax;
                        n= 0;
                        do {
                                n= 10 * n + (*p++ - '0');
                                if (n > max) goto range;
                        } while (isdigit(*p));
                }
                if (n < min) goto range;

                if (*p == '-') {        /* A range of the form 'n-m'? */
                        p++;
                        if (!isdigit(*p)) goto syntax;
                        m= 0;
                        do {
                                m= 10 * m + (*p++ - '0');
                                if (m > max) goto range;
                        } while (isdigit(*p));
                        if (m < n) goto range;
                        do {
                                bit_set(map, n);
                        } while (++n <= m);
                } else
                if (*p == ':') {        /* A repeat of the form 'n:m'? */
                        p++;
                        if (!isdigit(*p)) goto syntax;
                        m= 0;
                        do {
                                m= 10 * m + (*p++ - '0');
                                if (m > (max-min+1)) goto range;
                        } while (isdigit(*p));
                        if (m == 0) goto range;
                        while (n >= min) n-= m;
                        while ((n+= m) <= max) bit_set(map, n);
                } else {
                                        /* Simply a number */
                        bit_set(map, n);
                }
                if (*p == 0) break;
                if (*p++ != ',') goto syntax;
        }
        *p= end;
        return 1;
  syntax:
        log(LOG_ERR, "%s: field '%s': bad syntax for a %d-%d time field\n",
                file, data, min, max);
        return 0;
  range:
        log(LOG_ERR, "%s: field '%s': values out of the %d-%d allowed range\n",
                file, data, min, max);
        return 0;
}

void tab_parse(char *file, char *user)
/* Parse a crontab file and add its data to the tables.  Handle errors by
 * yourself.  Table is owned by 'user' if non-null.
 */
{
        crontab_t **atab, *tab;
        cronjob_t **ajob, *job;
        int fd;
        struct stat st;
        char *p, *q;
        size_t n;
        ssize_t r;
        int ok, wc;

        for (atab= &crontabs; (tab= *atab) != nil; atab= &tab->next) {
                if (strcmp(file, tab->file) == 0) break;
        }

        /* Try to open the file. */
        if ((fd= open(file, O_RDONLY)) < 0 || fstat(fd, &st) < 0) {
                if (errno != ENOENT) {
                        log(LOG_ERR, "%s: %s\n", file, strerror(errno));
                }
                if (fd != -1) close(fd);
                return;
        }

        /* Forget it if the file is awfully big. */
        if (st.st_size > TAB_MAX) {
                log(LOG_ERR, "%s: %lu bytes is bigger than my %lu limit\n",
                        file,
                        (unsigned long) st.st_size,
                        (unsigned long) TAB_MAX);
                return;
        }

        /* If the file is the same as before then don't bother. */
        if (tab != nil && st.st_mtime == tab->mtime) {
                close(fd);
                tab->current= 1;
                return;
        }

        /* Create a new table structure. */
        tab= allocate(sizeof(*tab));
        tab->file= allocate((strlen(file) + 1) * sizeof(tab->file[0]));
        strcpy(tab->file, file);
        tab->user= nil;
        if (user != nil) {
                tab->user= allocate((strlen(user) + 1) * sizeof(tab->user[0]));
                strcpy(tab->user, user);
        }
        tab->data= allocate((st.st_size + 1) * sizeof(tab->data[0]));
        tab->jobs= nil;
        tab->mtime= st.st_mtime;
        tab->current= 0;
        tab->next= *atab;
        *atab= tab;

        /* Pull a new table in core. */
        n= 0;
        while (n < st.st_size) {
                if ((r = read(fd, tab->data + n, st.st_size - n)) < 0) {
                        log(LOG_CRIT, "%s: %s", file, strerror(errno));
                        close(fd);
                        return;
                }
                if (r == 0) break;
                n+= r;
        }
        close(fd);
        tab->data[n]= 0;
        if (strlen(tab->data) < n) {
                log(LOG_ERR, "%s contains a null character\n", file);
                return;
        }

        /* Parse the file. */
        ajob= &tab->jobs;
        p= tab->data;
        ok= 1;
        while (ok && *p != 0) {
                q= get_token(&p);
                if (*q == '#' || q == p) {
                        /* Comment or empty. */
                        while (*p != 0 && *p++ != '\n') {}
                        continue;
                }

                /* One new job coming up. */
                *ajob= job= allocate(sizeof(*job));
                *(ajob= &job->next)= nil;
                job->tab= tab;

                if (!range_parse(file, q, job->min, 0, 59, &wc)) {
                        ok= 0;
                        break;
                }

                q= get_token(&p);
                if (!range_parse(file, q, job->hour, 0, 23, &wc)) {
                        ok= 0;
                        break;
                }

                q= get_token(&p);
                if (!range_parse(file, q, job->mday, 1, 31, &wc)) {
                        ok= 0;
                        break;
                }
                job->do_mday= !wc;

                q= get_token(&p);
                if (!range_parse(file, q, job->mon, 1, 12, &wc)) {
                        ok= 0;
                        break;
                }
                job->do_mday |= !wc;

                q= get_token(&p);
                if (!range_parse(file, q, job->wday, 0, 7, &wc)) {
                        ok= 0;
                        break;
                }
                job->do_wday= !wc;

                /* 7 is Sunday, but 0 is a common mistake because it is in the
                 * tm_wday range.  We allow and even prefer it internally.
                 */
                if (bit_isset(job->wday, 7)) {
                        bit_clr(job->wday, 7);
                        bit_set(job->wday, 0);
                }

                /* The month range is 1-12, but tm_mon likes 0-11. */
                job->mon[0] >>= 1;
                if (bit_isset(job->mon, 8)) bit_set(job->mon, 7);
                job->mon[1] >>= 1;

                /* Scan for options. */
                job->user= nil;
                while (q= get_token(&p), *q == '-') {
                        q++;
                        if (q[0] == '-' && q+1 == p) {
                                /* -- */
                                q= get_token(&p);
                                break;
                        }
                        while (q < p) switch (*q++) {
                        case 'u':
                                if (q == p) q= get_token(&p);
                                if (q == p) goto usage;
                                memmove(q-1, q, p-q);   /* gross... */
                                p[-1]= 0;
                                job->user= q-1;
                                q= p;
                                break;
                        default:
                        usage:
                                log(LOG_ERR,
                        "%s: bad option -%c, good options are: -u username\n",
                                        file, q[-1]);
                                ok= 0;
                                goto endtab;
                        }
                }

                /* A crontab owned by a user can only do things as that user. */
                if (tab->user != nil) job->user= tab->user;

                /* Inspect the first character of the command. */
                job->cmd= q;
                if (q == p || *q == '#') {
                        /* Rest of the line is empty, i.e. the commands are on
                         * the following lines indented by one tab.
                         */
                        while (*p != 0 && *p++ != '\n') {}
                        if (*p++ != '\t') {
                                log(LOG_ERR, "%s: contains an empty command\n",
                                        file);
                                ok= 0;
                                goto endtab;
                        }
                        while (*p != 0) {
                                if ((*q = *p++) == '\n') {
                                        if (*p != '\t') break;
                                        p++;
                                }
                                q++;
                        }
                } else {
                        /* The command is on this line.  Alas we must now be
                         * backwards compatible and change %'s to newlines.
                         */
                        p= q;
                        while (*p != 0) {
                                if ((*q = *p++) == '\n') break;
                                if (*q == '%') *q= '\n';
                                q++;
                        }
                }
                *q= 0;
                job->rtime= now;
                job->late= 0;           /* It is on time. */
                job->atjob= 0;          /* True cron job. */
                job->pid= IDLE_PID;     /* Not running yet. */
                tab_reschedule(job);    /* Compute next time to run. */
        }
  endtab:

        if (ok) tab->current= 1;
}

void tab_find_atjob(char *atdir)
/* Find the first to be executed AT job and kludge up an crontab job for it.
 * We set tab->file to "atdir/jobname", tab->data to "atdir/past/jobname",
 * and job->cmd to "jobname".
 */
{
        DIR *spool;
        struct dirent *entry;
        time_t t0, t1;
        struct tm tmnow, tmt1;
        static char template[] = "96.365.1546.00";
        char firstjob[sizeof(template)];
        int i;
        crontab_t *tab;
        cronjob_t *job;

        if ((spool= opendir(atdir)) == nil) return;

        tmnow= *localtime(&now);
        t0= NEVER;

        while ((entry= readdir(spool)) != nil) {
                /* Check if the name fits the template. */
                for (i= 0; template[i] != 0; i++) {
                        if (template[i] == '.') {
                                if (entry->d_name[i] != '.') break;
                        } else {
                                if (!isdigit(entry->d_name[i])) break;
                        }
                }
                if (template[i] != 0 || entry->d_name[i] != 0) continue;

                /* Convert the name to a time.  Careful with the century. */
                memset(&tmt1, 0, sizeof(tmt1));
                tmt1.tm_year= atoi(entry->d_name+0);
                while (tmt1.tm_year < tmnow.tm_year-10) tmt1.tm_year+= 100;
                tmt1.tm_mday= 1+atoi(entry->d_name+3);
                tmt1.tm_min= atoi(entry->d_name+7);
                tmt1.tm_hour= tmt1.tm_min / 100;
                tmt1.tm_min%= 100;
                tmt1.tm_isdst= -1;
                if ((t1= mktime(&tmt1)) == -1) {
                        /* Illegal time?  Try in winter time. */
                        tmt1.tm_isdst= 0;
                        if ((t1= mktime(&tmt1)) == -1) continue;
                }
                if (t1 < t0) {
                        t0= t1;
                        strcpy(firstjob, entry->d_name);
                }
        }
        closedir(spool);

        if (t0 == NEVER) return;        /* AT job spool is empty. */

        /* Create new table and job structures. */
        tab= allocate(sizeof(*tab));
        tab->file= allocate((strlen(atdir) + 1 + sizeof(template))
                                                * sizeof(tab->file[0]));
        strcpy(tab->file, atdir);
        strcat(tab->file, "/");
        strcat(tab->file, firstjob);
        tab->data= allocate((strlen(atdir) + 6 + sizeof(template))
                                                * sizeof(tab->data[0]));
        strcpy(tab->data, atdir);
        strcat(tab->data, "/past/");
        strcat(tab->data, firstjob);
        tab->user= nil;
        tab->mtime= 0;
        tab->current= 1;
        tab->next= crontabs;
        crontabs= tab;

        tab->jobs= job= allocate(sizeof(*job));
        job->next= nil;
        job->tab= tab;
        job->user= nil;
        job->cmd= tab->data + strlen(atdir) + 6;
        job->rtime= t0;
        job->late= 0;
        job->atjob= 1;          /* One AT job disguised as a cron job. */
        job->pid= IDLE_PID;

        if (job->rtime < next) next= job->rtime;
}

void tab_purge(void)
/* Remove table data that is no longer current.  E.g. a crontab got removed.
 */
{
        crontab_t **atab, *tab;
        cronjob_t *job;

        atab= &crontabs;
        while ((tab= *atab) != nil) {
                if (tab->current) {
                        /* Table is fine. */
                        tab->current= 0;
                        atab= &tab->next;
                } else {
                        /* Table is not, or no longer valid; delete. */
                        *atab= tab->next;
                        while ((job= tab->jobs) != nil) {
                                tab->jobs= job->next;
                                deallocate(job);
                        }
                        deallocate(tab->data);
                        deallocate(tab->file);
                        deallocate(tab->user);
                        deallocate(tab);
                }
        }
}

static cronjob_t *reap_or_find(pid_t pid)
/* Find a finished job or search for the next one to run. */
{
        crontab_t *tab;
        cronjob_t *job;
        cronjob_t *nextjob;

        nextjob= nil;
        next= NEVER;
        for (tab= crontabs; tab != nil; tab= tab->next) {
                for (job= tab->jobs; job != nil; job= job->next) {
                        if (job->pid == pid) {
                                job->pid= IDLE_PID;
                                tab_reschedule(job);
                        }
                        if (job->pid != IDLE_PID) continue;
                        if (job->rtime < next) next= job->rtime;
                        if (job->rtime <= now) nextjob= job;
                }
        }
        return nextjob;
}

void tab_reap_job(pid_t pid)
/* A job has finished.  Try to find it among the crontab data and reschedule
 * it.  Recompute time next to run a job.
 */
{
        (void) reap_or_find(pid);
}

cronjob_t *tab_nextjob(void)
/* Find a job that should be run now.  If none are found return null.
 * Update 'next'.
 */
{
        return reap_or_find(NO_PID);
}

static void pr_map(FILE *fp, bitmap_t map)
{
        int last_bit= -1, bit;
        char *sep;

        sep= "";
        for (bit= 0; bit < 64; bit++) {
                if (bit_isset(map, bit)) {
                        if (last_bit == -1) last_bit= bit;
                } else {
                        if (last_bit != -1) {
                                fprintf(fp, "%s%d", sep, last_bit);
                                if (last_bit != bit-1) {
                                        fprintf(fp, "-%d", bit-1);
                                }
                                last_bit= -1;
                                sep= ",";
                        }
                }
        }
}

void tab_print(FILE *fp)
/* Print out a stored crontab file for debugging purposes. */
{
        crontab_t *tab;
        cronjob_t *job;
        char *p;
        struct tm tm;

        for (tab= crontabs; tab != nil; tab= tab->next) {
                fprintf(fp, "tab->file = \"%s\"\n", tab->file);
                fprintf(fp, "tab->user = \"%s\"\n",
                                tab->user == nil ? "(root)" : tab->user);
                fprintf(fp, "tab->mtime = %s", ctime(&tab->mtime));

                for (job= tab->jobs; job != nil; job= job->next) {
                        if (job->atjob) {
                                fprintf(fp, "AT job");
                        } else {
                                pr_map(fp, job->min); fputc(' ', fp);
                                pr_map(fp, job->hour); fputc(' ', fp);
                                pr_map(fp, job->mday); fputc(' ', fp);
                                pr_map(fp, job->mon); fputc(' ', fp);
                                pr_map(fp, job->wday);
                        }
                        if (job->user != nil && job->user != tab->user) {
                                fprintf(fp, " -u %s", job->user);
                        }
                        fprintf(fp, "\n\t");
                        for (p= job->cmd; *p != 0; p++) {
                                fputc(*p, fp);
                                if (*p == '\n') fputc('\t', fp);
                        }
                        fputc('\n', fp);
                        tm= *localtime(&job->rtime);
                        fprintf(fp, "    rtime = %.24s%s\n", asctime(&tm),
                                tm.tm_isdst ? " (DST)" : "");
                        if (job->pid != IDLE_PID) {
                                fprintf(fp, "    pid = %ld\n", (long) job->pid);
                        }
                }
        }
}

/*
 * $PchId: tab.c,v 1.5 2000/07/25 22:07:51 philip Exp $
 */

---