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-rw-r--r--system_cmds/at.tproj/at.c960
1 files changed, 960 insertions, 0 deletions
diff --git a/system_cmds/at.tproj/at.c b/system_cmds/at.tproj/at.c
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+++ b/system_cmds/at.tproj/at.c
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+/*
+ * at.c : Put file into atrun queue
+ * Copyright (C) 1993, 1994 Thomas Koenig
+ *
+ * Atrun & Atq modifications
+ * Copyright (C) 1993 David Parsons
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. The name of the author(s) may not be used to endorse or promote
+ * products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: /usr/local/www/cvsroot/FreeBSD/src/usr.bin/at/at.c,v 1.34 2011/11/06 20:30:21 ed Exp $");
+
+#define _USE_BSD 1
+
+/* System Headers */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <ctype.h>
+#include <dirent.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#ifndef __FreeBSD__
+#include <getopt.h>
+#endif
+#include <glob.h>
+#ifdef __FreeBSD__
+#include <locale.h>
+#endif
+#include <pwd.h>
+#include <signal.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#ifdef __APPLE__
+#include <get_compat.h>
+#else /* !__APPLE */
+#define COMPAT_MODE(a,b) (1)
+#endif /* __APPLE__ */
+
+/* Local headers */
+
+#include "at.h"
+#include "panic.h"
+#include "parsetime.h"
+#include "pathnames.h"
+#include "perm.h"
+
+#define MAIN
+#include "privs.h"
+
+/* Macros */
+
+#ifndef ATJOB_DIR
+#define ATJOB_DIR _PATH_ATJOBS
+#endif
+
+#ifndef LFILE
+#define LFILE ATJOB_DIR ".lockfile"
+#endif
+
+#ifndef ATJOB_MX
+#define ATJOB_MX 255
+#endif
+
+#define ALARMC 10 /* Number of seconds to wait for timeout */
+
+#define SIZE 255
+#define TIMESIZE 50
+
+enum { ATQ, ATRM, AT, BATCH, CAT }; /* what program we want to run */
+
+/* File scope variables */
+
+static const char *no_export[] = {
+ "TERM", "TERMCAP", "DISPLAY", "_"
+};
+static int send_mail = 0;
+static char *atinput = NULL; /* where to get input from */
+static char atqueue = 0; /* which queue to examine for jobs (atq) */
+
+/* External variables */
+
+extern char **environ;
+int fcreated;
+char atfile[] = ATJOB_DIR "12345678901234";
+char atverify = 0; /* verify time instead of queuing job */
+char *namep;
+int posixly_correct; /* Behave as per POSIX */
+/* http://www.opengroup.org/onlinepubs/009695399/utilities/at.html */
+
+/* Function declarations */
+
+static void sigc(int signo);
+static void alarmc(int signo);
+static char *cwdname(void);
+static void writefile(time_t runtimer, char queue);
+static void list_jobs(long *, int);
+static long nextjob(void);
+static time_t ttime(const char *arg);
+static int in_job_list(long, long *, int);
+static long *get_job_list(int, char *[], int *);
+
+/* Signal catching functions */
+
+static void
+sigc(int signo __unused)
+{
+/* If the user presses ^C, remove the spool file and exit
+ */
+ if (fcreated)
+ {
+ PRIV_START
+ unlink(atfile);
+ PRIV_END
+ }
+
+ _exit(EXIT_FAILURE);
+}
+
+static void
+alarmc(int signo __unused)
+{
+ char buf[1024];
+
+ /* Time out after some seconds. */
+ strlcpy(buf, namep, sizeof(buf));
+ strlcat(buf, ": file locking timed out\n", sizeof(buf));
+ write(STDERR_FILENO, buf, strlen(buf));
+ sigc(0);
+}
+
+/* Local functions */
+
+static char *
+cwdname(void)
+{
+/* Read in the current directory; the name will be overwritten on
+ * subsequent calls.
+ */
+ static char *ptr = NULL;
+ static size_t size = SIZE;
+
+ if (ptr == NULL)
+ if ((ptr = malloc(size)) == NULL)
+ errx(EXIT_FAILURE, "virtual memory exhausted");
+
+ while (1)
+ {
+ if (ptr == NULL)
+ panic("out of memory");
+
+ if (getcwd(ptr, size-1) != NULL)
+ return ptr;
+
+ if (errno != ERANGE)
+ perr("cannot get directory");
+
+ free (ptr);
+ size += SIZE;
+ if ((ptr = malloc(size)) == NULL)
+ errx(EXIT_FAILURE, "virtual memory exhausted");
+ }
+}
+
+static long
+nextjob(void)
+{
+ long jobno;
+ FILE *fid;
+
+ if ((fid = fopen(ATJOB_DIR ".SEQ", "r+")) != NULL) {
+ if (fscanf(fid, "%5lx", &jobno) == 1) {
+ rewind(fid);
+ jobno = (1+jobno) % 0xfffff; /* 2^20 jobs enough? */
+ fprintf(fid, "%05lx\n", jobno);
+ }
+ else
+ jobno = EOF;
+ fclose(fid);
+ return jobno;
+ }
+ else if ((fid = fopen(ATJOB_DIR ".SEQ", "w")) != NULL) {
+ fprintf(fid, "%05lx\n", jobno = 1);
+ fclose(fid);
+ return 1;
+ }
+ return EOF;
+}
+
+static void
+writefile(time_t runtimer, char queue)
+{
+/* This does most of the work if at or batch are invoked for writing a job.
+ */
+ long jobno;
+ char *ap, *ppos, *mailname;
+ struct passwd *pass_entry;
+ struct stat statbuf;
+ int fdes, lockdes, fd2;
+ FILE *fp, *fpin;
+ struct sigaction act;
+ char **atenv;
+ int ch;
+ mode_t cmask;
+ struct flock lock;
+ char * oldpwd_str = NULL;
+
+#ifdef __FreeBSD__
+ (void) setlocale(LC_TIME, "");
+#endif
+
+/* Install the signal handler for SIGINT; terminate after removing the
+ * spool file if necessary
+ */
+ act.sa_handler = sigc;
+ sigemptyset(&(act.sa_mask));
+ act.sa_flags = 0;
+
+ sigaction(SIGINT, &act, NULL);
+
+ ppos = atfile + strlen(ATJOB_DIR);
+
+ /* Loop over all possible file names for running something at this
+ * particular time, see if a file is there; the first empty slot at any
+ * particular time is used. Lock the file LFILE first to make sure
+ * we're alone when doing this.
+ */
+
+ PRIV_START
+
+ if ((lockdes = open(LFILE, O_WRONLY | O_CREAT, S_IWUSR | S_IRUSR)) < 0)
+ perr("cannot open lockfile " LFILE);
+
+ lock.l_type = F_WRLCK; lock.l_whence = SEEK_SET; lock.l_start = 0;
+ lock.l_len = 0;
+
+ act.sa_handler = alarmc;
+ sigemptyset(&(act.sa_mask));
+ act.sa_flags = 0;
+
+ /* Set an alarm so a timeout occurs after ALARMC seconds, in case
+ * something is seriously broken.
+ */
+ sigaction(SIGALRM, &act, NULL);
+ alarm(ALARMC);
+ fcntl(lockdes, F_SETLKW, &lock);
+ alarm(0);
+
+ if ((jobno = nextjob()) == EOF)
+ perr("cannot generate job number");
+
+ sprintf(ppos, "%c%5lx%8lx", queue,
+ jobno, (unsigned long) (runtimer/60));
+
+ for(ap=ppos; *ap != '\0'; ap ++)
+ if (*ap == ' ')
+ *ap = '0';
+
+ if (stat(atfile, &statbuf) != 0)
+ if (errno != ENOENT)
+ perr("cannot access " ATJOB_DIR);
+
+ /* Create the file. The x bit is only going to be set after it has
+ * been completely written out, to make sure it is not executed in the
+ * meantime. To make sure they do not get deleted, turn off their r
+ * bit. Yes, this is a kluge.
+ */
+ cmask = umask(S_IRUSR | S_IWUSR | S_IXUSR);
+ if ((fdes = creat(atfile, O_WRONLY)) == -1)
+ perr("cannot create atjob file");
+
+ if ((fd2 = dup(fdes)) <0)
+ perr("error in dup() of job file");
+
+ if(fchown(fd2, real_uid, real_gid) != 0)
+ perr("cannot give away file");
+
+ PRIV_END
+
+ /* We no longer need suid root; now we just need to be able to write
+ * to the directory, if necessary.
+ */
+
+ REDUCE_PRIV(DAEMON_UID, DAEMON_GID)
+
+ /* We've successfully created the file; let's set the flag so it
+ * gets removed in case of an interrupt or error.
+ */
+ fcreated = 1;
+
+ /* Now we can release the lock, so other people can access it
+ */
+ lock.l_type = F_UNLCK; lock.l_whence = SEEK_SET; lock.l_start = 0;
+ lock.l_len = 0;
+ fcntl(lockdes, F_SETLKW, &lock);
+ close(lockdes);
+
+ if((fp = fdopen(fdes, "w")) == NULL)
+ panic("cannot reopen atjob file");
+
+ /* Get the userid to mail to, first by trying getlogin(),
+ * then from LOGNAME, finally from getpwuid().
+ */
+ mailname = getlogin();
+ if (mailname == NULL)
+ mailname = getenv("LOGNAME");
+
+ if ((mailname == NULL) || (mailname[0] == '\0')
+ || (strlen(mailname) >= MAXLOGNAME) || (getpwnam(mailname)==NULL))
+ {
+ pass_entry = getpwuid(real_uid);
+ if (pass_entry != NULL)
+ mailname = pass_entry->pw_name;
+ }
+
+ if (atinput != (char *) NULL)
+ {
+ fpin = freopen(atinput, "r", stdin);
+ if (fpin == NULL)
+ perr("cannot open input file");
+ }
+ fprintf(fp, "#!/bin/sh\n# atrun uid=%ld gid=%ld\n# mail %.*s %d\n",
+ (long) real_uid, (long) real_gid, MAXLOGNAME - 1, mailname,
+ send_mail);
+
+ /* Write out the umask at the time of invocation
+ */
+ fprintf(fp, "umask %lo\n", (unsigned long) cmask);
+
+ /* Write out the environment. Anything that may look like a
+ * special character to the shell is quoted, except for \n, which is
+ * done with a pair of "'s. Don't export the no_export list (such
+ * as TERM or DISPLAY) because we don't want these.
+ */
+ for (atenv= environ; *atenv != NULL; atenv++)
+ {
+ int export = 1;
+ char *eqp;
+
+ eqp = strchr(*atenv, '=');
+ if (ap == NULL)
+ eqp = *atenv;
+ else
+ {
+ size_t i;
+
+ if(strncmp(*atenv, "OLDPWD", (size_t) (eqp-*atenv)) == 0) {
+ oldpwd_str = *atenv;
+ }
+ if (!posixly_correct) {
+ /* Test 891 expects TERM, etc. to show up in "at" env
+ so exclude them only when not posixly_correct */
+ for (i=0; i<sizeof(no_export)/sizeof(no_export[0]); i++)
+ {
+ export = export
+ && (strncmp(*atenv, no_export[i],
+ (size_t) (eqp-*atenv)) != 0);
+ }
+ }
+ eqp++;
+ }
+
+ if (export)
+ {
+ fwrite(*atenv, sizeof(char), eqp-*atenv, fp);
+ for(ap = eqp;*ap != '\0'; ap++)
+ {
+ if (*ap == '\n')
+ fprintf(fp, "\"\n\"");
+ else
+ {
+ if (!isalnum(*ap)) {
+ switch (*ap) {
+ case '%': case '/': case '{': case '[':
+ case ']': case '=': case '}': case '@':
+ case '+': case '#': case ',': case '.':
+ case ':': case '-': case '_':
+ break;
+ default:
+ fputc('\\', fp);
+ break;
+ }
+ }
+ fputc(*ap, fp);
+ }
+ }
+ fputs("; export ", fp);
+ fwrite(*atenv, sizeof(char), eqp-*atenv -1, fp);
+ fputc('\n', fp);
+
+ }
+ }
+ /* Cd to the directory at the time and write out all the
+ * commands the user supplies from stdin.
+ */
+ fprintf(fp, "cd ");
+ for (ap = cwdname(); *ap != '\0'; ap++)
+ {
+ if (*ap == '\n')
+ fprintf(fp, "\"\n\"");
+ else
+ {
+ if (*ap != '/' && !isalnum(*ap))
+ fputc('\\', fp);
+
+ fputc(*ap, fp);
+ }
+ }
+ /* Test cd's exit status: die if the original directory has been
+ * removed, become unreadable or whatever
+ */
+ fprintf(fp, " || {\n\t echo 'Execution directory "
+ "inaccessible' >&2\n\t exit 1\n}\n");
+
+ /* Put OLDPWD back, since the cd has set it */
+ /* Although this is added to fix conformance test at.ex 891, it seems like */
+ /* the right thing to do always, so the code is not posix_pedantic only */
+ if (oldpwd_str) {
+ fprintf(fp, "%s; export OLDPWD\n", oldpwd_str);
+ } else {
+ fprintf(fp, "unset OLDPWD\n");
+ }
+
+ while((ch = getchar()) != EOF)
+ fputc(ch, fp);
+
+ fprintf(fp, "\n");
+ if (ferror(fp))
+ panic("output error");
+
+ if (ferror(stdin))
+ panic("input error");
+
+ fclose(fp);
+
+ /* Set the x bit so that we're ready to start executing
+ */
+
+ if (fchmod(fd2, S_IRUSR | S_IWUSR | S_IXUSR) < 0)
+ perr("cannot give away file");
+
+ close(fd2);
+ if (posixly_correct) {
+ struct tm runtime;
+ char timestr[TIMESIZE];
+ runtime = *localtime(&runtimer);
+ strftime(timestr, TIMESIZE, "%a %b %e %T %Y", &runtime);
+ fprintf(stderr, "job %ld at %s\n", jobno, timestr);
+ } else
+ fprintf(stderr, "Job %ld will be executed using /bin/sh\n", jobno);
+}
+
+static int
+in_job_list(long job, long *joblist, int len)
+{
+ int i;
+
+ for (i = 0; i < len; i++)
+ if (job == joblist[i])
+ return 1;
+
+ return 0;
+}
+
+static void
+list_one_job(char *name, long *joblist, int len, int *first)
+{
+ struct stat buf;
+ struct tm runtime;
+ unsigned long ctm;
+ char queue;
+ long jobno;
+ time_t runtimer;
+ char timestr[TIMESIZE];
+
+ if (stat(name, &buf) != 0)
+ perr("cannot stat in " ATJOB_DIR);
+
+ /* See it's a regular file and has its x bit turned on and
+ * is the user's
+ */
+ if (!S_ISREG(buf.st_mode)
+ || ((buf.st_uid != real_uid) && ! (real_uid == 0))
+ || !(S_IXUSR & buf.st_mode || atverify))
+ return;
+
+ if(sscanf(name, "%c%5lx%8lx", &queue, &jobno, &ctm)!=3)
+ return;
+
+ /* If jobs are given, only list those jobs */
+ if (joblist && !in_job_list(jobno, joblist, len))
+ return;
+
+ if (atqueue && (queue != atqueue))
+ return;
+
+ runtimer = 60*(time_t) ctm;
+ runtime = *localtime(&runtimer);
+ strftime(timestr, TIMESIZE, "%a %b %e %T %Y", &runtime);
+ if (*first) {
+ if (!posixly_correct)
+ printf("Date\t\t\t\tOwner\t\tQueue\tJob#\n");
+ *first=0;
+ }
+ if (posixly_correct)
+ printf("%ld\t%s\n", jobno, timestr);
+ else {
+ struct passwd *pw = getpwuid(buf.st_uid);
+
+ printf("%s\t%s\t%c%s\t%s\n",
+ timestr,
+ pw ? pw->pw_name : "???",
+ queue,
+ (S_IXUSR & buf.st_mode) ? "":"(done)",
+ name);
+ }
+}
+
+static void
+list_jobs(long *joblist, int len)
+{
+ /* List all a user's jobs in the queue, by looping through ATJOB_DIR,
+ * or everybody's if we are root
+ */
+ DIR *spool;
+ struct dirent *dirent;
+ int first=1;
+
+#ifdef __FreeBSD__
+ (void) setlocale(LC_TIME, "");
+#endif
+
+ PRIV_START
+
+ if (chdir(ATJOB_DIR) != 0)
+ perr("cannot change to " ATJOB_DIR);
+
+ if (joblist) { /* Force order to match POSIX */
+ char jobglob[32];
+ glob_t g;
+ int i;
+
+ sprintf(jobglob, "?%05lx*", joblist[0]);
+ g.gl_offs = 0;
+ glob(jobglob, GLOB_DOOFFS, NULL, &g);
+ for (i = 1; i < len; i++) {
+ sprintf(jobglob, "?%05lx*", joblist[i]);
+ glob(jobglob, GLOB_DOOFFS | GLOB_APPEND, NULL, &g);
+ }
+ for (i = 0; i < g.gl_pathc; i++) {
+ list_one_job(g.gl_pathv[i], joblist, len, &first);
+ }
+ globfree(&g);
+ } else {
+ if ((spool = opendir(".")) == NULL)
+ perr("cannot open " ATJOB_DIR);
+
+ /* Loop over every file in the directory
+ */
+ while((dirent = readdir(spool)) != NULL) {
+ list_one_job(dirent->d_name, joblist, len, &first);
+ }
+ closedir(spool);
+ }
+ PRIV_END
+}
+
+static void
+process_jobs(int argc, char **argv, int what)
+{
+ /* Delete every argument (job - ID) given
+ */
+ int i;
+ struct stat buf;
+ DIR *spool;
+ struct dirent *dirent;
+ unsigned long ctm;
+ char queue;
+ long jobno;
+
+ PRIV_START
+
+ if (chdir(ATJOB_DIR) != 0)
+ perr("cannot change to " ATJOB_DIR);
+
+ if ((spool = opendir(".")) == NULL)
+ perr("cannot open " ATJOB_DIR);
+
+ PRIV_END
+
+ /* Loop over every file in the directory
+ */
+ while((dirent = readdir(spool)) != NULL) {
+
+ PRIV_START
+ if (stat(dirent->d_name, &buf) != 0)
+ perr("cannot stat in " ATJOB_DIR);
+ PRIV_END
+
+ if(sscanf(dirent->d_name, "%c%5lx%8lx", &queue, &jobno, &ctm)!=3)
+ continue;
+
+ for (i=optind; i < argc; i++) {
+ if (atoi(argv[i]) == jobno || strcmp(argv[i], dirent->d_name)==0) {
+ if ((buf.st_uid != real_uid) && !(real_uid == 0))
+ errx(EXIT_FAILURE, "%s: not owner", argv[i]);
+ switch (what) {
+ case ATRM:
+
+ PRIV_START
+
+ if (unlink(dirent->d_name) != 0)
+ perr(dirent->d_name);
+
+ PRIV_END
+
+ break;
+
+ case CAT:
+ {
+ FILE *fp;
+ int ch;
+
+ PRIV_START
+
+ fp = fopen(dirent->d_name,"r");
+
+ PRIV_END
+
+ if (!fp) {
+ perr("cannot open file");
+ }
+ while((ch = getc(fp)) != EOF) {
+ putchar(ch);
+ }
+ fclose(fp);
+ }
+ break;
+
+ default:
+ errx(EXIT_FAILURE, "internal error, process_jobs = %d",
+ what);
+ }
+ }
+ }
+ }
+ closedir(spool);
+} /* process_jobs */
+
+#define ATOI2(ar) ((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2;
+
+static time_t
+ttime(const char *arg)
+{
+ /*
+ * This is pretty much a copy of stime_arg1() from touch.c. I changed
+ * the return value and the argument list because it's more convenient
+ * (IMO) to do everything in one place. - Joe Halpin
+ */
+ struct timeval tv[2];
+ time_t now;
+ struct tm *t;
+ int yearset;
+ char *p;
+
+ if (gettimeofday(&tv[0], NULL))
+ panic("Cannot get current time");
+
+ /* Start with the current time. */
+ now = tv[0].tv_sec;
+ if ((t = localtime(&now)) == NULL)
+ panic("localtime");
+ /* [[CC]YY]MMDDhhmm[.SS] */
+ if ((p = strchr(arg, '.')) == NULL)
+ t->tm_sec = 0; /* Seconds defaults to 0. */
+ else {
+ if (strlen(p + 1) != 2)
+ goto terr;
+ *p++ = '\0';
+ t->tm_sec = ATOI2(p);
+ }
+
+ yearset = 0;
+ switch(strlen(arg)) {
+ case 12: /* CCYYMMDDhhmm */
+ t->tm_year = ATOI2(arg);
+ t->tm_year *= 100;
+ yearset = 1;
+ /* FALLTHROUGH */
+ case 10: /* YYMMDDhhmm */
+ if (yearset) {
+ yearset = ATOI2(arg);
+ t->tm_year += yearset;
+ } else {
+ yearset = ATOI2(arg);
+ t->tm_year = yearset + 2000;
+ }
+ t->tm_year -= 1900; /* Convert to UNIX time. */
+ /* FALLTHROUGH */
+ case 8: /* MMDDhhmm */
+ t->tm_mon = ATOI2(arg);
+ --t->tm_mon; /* Convert from 01-12 to 00-11 */
+ t->tm_mday = ATOI2(arg);
+ t->tm_hour = ATOI2(arg);
+ t->tm_min = ATOI2(arg);
+ break;
+ default:
+ goto terr;
+ }
+
+ t->tm_isdst = -1; /* Figure out DST. */
+ tv[0].tv_sec = tv[1].tv_sec = mktime(t);
+ if (tv[0].tv_sec != -1)
+ return tv[0].tv_sec;
+ else
+terr:
+ panic(
+ "out of range or illegal time specification: [[CC]YY]MMDDhhmm[.SS]");
+}
+
+static long *
+get_job_list(int argc, char *argv[], int *joblen)
+{
+ int i, len;
+ long *joblist;
+ char *ep;
+
+ joblist = NULL;
+ len = argc;
+ if (len > 0) {
+ if ((joblist = malloc(len * sizeof(*joblist))) == NULL)
+ panic("out of memory");
+
+ for (i = 0; i < argc; i++) {
+ errno = 0;
+ if ((joblist[i] = strtol(argv[i], &ep, 10)) < 0 ||
+ ep == argv[i] || *ep != '\0' || errno)
+ panic("invalid job number");
+ }
+ }
+
+ *joblen = len;
+ return joblist;
+}
+
+int
+main(int argc, char **argv)
+{
+ int c;
+ char queue = DEFAULT_AT_QUEUE;
+ char queue_set = 0;
+ char *pgm;
+
+ int program = AT; /* our default program */
+ const char *options = "q:f:t:rmvldbc"; /* default options for at */
+ time_t timer;
+ long *joblist;
+ int joblen;
+
+ posixly_correct = COMPAT_MODE("bin/at", "Unix2003");
+ joblist = NULL;
+ joblen = 0;
+ timer = -1;
+ RELINQUISH_PRIVS
+
+ if (argv[0] == NULL)
+ usage();
+ /* Eat any leading paths
+ */
+ if ((pgm = strrchr(argv[0], '/')) == NULL)
+ pgm = argv[0];
+ else
+ pgm++;
+
+ namep = pgm;
+
+ /* find out what this program is supposed to do
+ */
+ if (strcmp(pgm, "atq") == 0) {
+ program = ATQ;
+ options = "q:v";
+ }
+ else if (strcmp(pgm, "atrm") == 0) {
+ program = ATRM;
+ options = "";
+ }
+ else if (strcmp(pgm, "batch") == 0) {
+ program = BATCH;
+ options = "f:q:mv";
+ }
+
+ /* process whatever options we can process
+ */
+ opterr=1;
+ while ((c=getopt(argc, argv, options)) != -1)
+ switch (c) {
+ case 'v': /* verify time settings */
+ atverify = 1;
+ break;
+
+ case 'm': /* send mail when job is complete */
+ send_mail = 1;
+ break;
+
+ case 'f':
+ atinput = optarg;
+ break;
+
+ case 'q': /* specify queue */
+ if (strlen(optarg) > 1)
+ usage();
+
+ atqueue = queue = *optarg;
+ if (!(islower(queue)||isupper(queue)))
+ usage();
+
+ queue_set = 1;
+ break;
+
+ case 'd':
+ warnx("-d is deprecated; use -r instead");
+ /* fall through to 'r' */
+
+ case 'r':
+ if (program != AT)
+ usage();
+
+ program = ATRM;
+ options = "";
+ break;
+
+ case 't':
+ if (program != AT)
+ usage();
+ timer = ttime(optarg);
+ break;
+
+ case 'l':
+ if (program != AT)
+ usage();
+
+ program = ATQ;
+ options = "q:";
+ break;
+
+ case 'b':
+ if (program != AT)
+ usage();
+
+ program = BATCH;
+ options = "f:q:mv";
+ break;
+
+ case 'c':
+ program = CAT;
+ options = "";
+ break;
+
+ default:
+ usage();
+ break;
+ }
+ /* end of options eating
+ */
+
+ /* select our program
+ */
+ if(!check_permission())
+ errx(EXIT_FAILURE, "you do not have permission to use this program");
+ switch (program) {
+ case ATQ:
+
+ REDUCE_PRIV(DAEMON_UID, DAEMON_GID)
+
+ if (queue_set == 0)
+ joblist = get_job_list(argc - optind, argv + optind, &joblen);
+ list_jobs(joblist, joblen);
+ break;
+
+ case ATRM:
+
+ REDUCE_PRIV(DAEMON_UID, DAEMON_GID)
+
+ process_jobs(argc, argv, ATRM);
+ break;
+
+ case CAT:
+
+ process_jobs(argc, argv, CAT);
+ break;
+
+ case AT:
+ /*
+ * If timer is > -1, then the user gave the time with -t. In that
+ * case, it's already been set. If not, set it now.
+ */
+ if (timer == -1)
+ timer = parsetime(argc, argv);
+
+ if (atverify)
+ {
+ struct tm *tm = localtime(&timer);
+ fprintf(stderr, "%s\n", asctime(tm));
+ }
+ writefile(timer, queue);
+ break;
+
+ case BATCH:
+ if (queue_set)
+ queue = toupper(queue);
+ else
+ queue = DEFAULT_BATCH_QUEUE;
+
+ if (argc > optind)
+ timer = parsetime(argc, argv);
+ else
+ timer = time(NULL);
+
+ if (atverify)
+ {
+ struct tm *tm = localtime(&timer);
+ fprintf(stderr, "%s\n", asctime(tm));
+ }
+
+ writefile(timer, queue);
+ break;
+
+ default:
+ panic("internal error");
+ break;
+ }
+ exit(EXIT_SUCCESS);
+}
generated by cgit v1.2.3-56-ge451 (git 2.39.0) at 2024-05-18 02:55:19 +0000