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-rw-r--r--usr.bin/at/at.c562
1 files changed, 0 insertions, 562 deletions
diff --git a/usr.bin/at/at.c b/usr.bin/at/at.c
deleted file mode 100644
index 53959e3..0000000
--- a/usr.bin/at/at.c
+++ /dev/null
@@ -1,562 +0,0 @@
-/*
- * at.c : Put file into atrun queue
- * Copyright (C) 1993 Thomas Koenig
- *
- * Atrun & Atq modifications
- * Copyright (C) 1993 David Parsons
- * All rights reserved.
- *
- * 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 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.
- */
-
-#define _USE_BSD 1
-
-/* System Headers */
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/wait.h>
-#include <ctype.h>
-#include <dirent.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <pwd.h>
-#include <signal.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <unistd.h>
-
-/* Local headers */
-#include "at.h"
-#include "panic.h"
-#include "parsetime.h"
-#include "pathnames.h"
-#define MAIN
-#include "privs.h"
-
-/* Macros */
-#define ALARMC 10 /* Number of seconds to wait for timeout */
-
-#define SIZE 255
-#define TIMESIZE 50
-
-/* File scope variables */
-static char rcsid[] = "$Id: at.c,v 1.2 1993/12/06 04:10:42 cgd Exp $";
-char *no_export[] =
-{
- "TERM", "TERMCAP", "DISPLAY", "_"
-};
-static send_mail = 0;
-
-/* External variables */
-extern char **environ;
-int fcreated;
-char *namep;
-char atfile[FILENAME_MAX];
-
-char *atinput = (char *) 0; /* where to get input from */
-char atqueue = 0; /* which queue to examine for jobs (atq) */
-char atverify = 0; /* verify time instead of queuing job */
-
-/* Function declarations */
-static void sigc __P((int signo));
-static void alarmc __P((int signo));
-static char *cwdname __P((void));
-static void writefile __P((time_t runtimer, char queue));
-static void list_jobs __P((void));
-
-/* Signal catching functions */
-
-static void
-sigc(signo)
- int signo;
-{
-/* 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(signo)
- int signo;
-{
-/* Time out after some seconds
- */
- panic("File locking timed out");
-}
-
-/* Local functions */
-
-static char *
-cwdname()
-{
-/* 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)
- ptr = (char *) malloc(size);
-
- 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;
- ptr = (char *) malloc(size);
- }
-}
-
-static void
-writefile(runtimer, queue)
- time_t runtimer;
- char queue;
-{
- /*
- * This does most of the work if at or batch are invoked for
- * writing a job.
- */
- int i;
- 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;
-
- /*
- * 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);
-
- strcpy(atfile, _PATH_ATJOBS);
- ppos = atfile + strlen(_PATH_ATJOBS);
-
- /*
- * 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 _PATH_LOCKFILE first
- * to make sure we're alone when doing this.
- */
-
- PRIV_START
-
- if ((lockdes = open(_PATH_LOCKFILE, O_WRONLY | O_CREAT, 0600)) < 0)
- perr2("Cannot open lockfile ", _PATH_LOCKFILE);
-
- 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);
-
- for (i = 0; i < AT_MAXJOBS; i++) {
- sprintf(ppos, "%c%8lx.%3x", queue,
- (unsigned long) (runtimer / 60), i);
- for (ap = ppos; *ap != '\0'; ap++)
- if (*ap == ' ')
- *ap = '0';
-
- if (stat(atfile, &statbuf) != 0) {
- if (errno == ENOENT)
- break;
- else
- perr2("Cannot access ", _PATH_ATJOBS);
- }
- } /* for */
-
- if (i >= AT_MAXJOBS)
- panic("Too many jobs already");
-
- /*
- * 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, -1) != 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(0);
-
- /*
- * 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(), which
- * reads /etc/utmp, then from LOGNAME, finally from getpwuid().
- */
- mailname = getlogin();
- if (mailname == NULL)
- mailname = getenv("LOGNAME");
-
- if ((mailname == NULL) || (mailname[0] == '\0')
- || (strlen(mailname) > 8)) {
- pass_entry = getpwuid(getuid());
- 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# mail %8s %d\n", 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. Dont'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 {
- int i;
-
- 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))
- fputc('\\', fp);
-
- 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 %s\n", cwdname());
-
- 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);
- fprintf(stderr, "Job %s will be executed using /bin/sh\n", ppos);
-}
-
-static void
-list_jobs()
-{
- /*
- * List all a user's jobs in the queue, by looping through
- * _PATH_ATJOBS, or everybody's if we are root
- */
- struct passwd *pw;
- DIR *spool;
- struct dirent *dirent;
- struct stat buf;
- struct tm runtime;
- unsigned long ctm;
- char queue;
- time_t runtimer;
- char timestr[TIMESIZE];
- int first = 1;
-
- PRIV_START
-
- if (chdir(_PATH_ATJOBS) != 0)
- perr2("Cannot change to ", _PATH_ATJOBS);
-
- if ((spool = opendir(".")) == NULL)
- perr2("Cannot open ", _PATH_ATJOBS);
-
- /* Loop over every file in the directory */
- while ((dirent = readdir(spool)) != NULL) {
- if (stat(dirent->d_name, &buf) != 0)
- perr2("Cannot stat in ", _PATH_ATJOBS);
-
- /*
- * 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))
- continue;
-
- if (sscanf(dirent->d_name, "%c%8lx", &queue, &ctm) != 2)
- continue;
-
- if (atqueue && (queue != atqueue))
- continue;
-
- runtimer = 60 * (time_t) ctm;
- runtime = *localtime(&runtimer);
- strftime(timestr, TIMESIZE, "%X %x", &runtime);
- if (first) {
- printf("Date\t\t\tOwner\tQueue\tJob#\n");
- first = 0;
- }
- 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)",
- dirent->d_name);
- }
- PRIV_END
-}
-
-static void
-delete_jobs(argc, argv)
- int argc;
- char **argv;
-{
- /* Delete every argument (job - ID) given */
- int i;
- struct stat buf;
-
- PRIV_START
-
- if (chdir(_PATH_ATJOBS) != 0)
- perr2("Cannot change to ", _PATH_ATJOBS);
-
- for (i = optind; i < argc; i++) {
- if (stat(argv[i], &buf) != 0)
- perr(argv[i]);
- if ((buf.st_uid != real_uid) && !(real_uid == 0)) {
- fprintf(stderr, "%s: Not owner\n", argv[i]);
- exit(EXIT_FAILURE);
- }
- if (unlink(argv[i]) != 0)
- perr(argv[i]);
- }
- PRIV_END
-} /* delete_jobs */
-
-/* Global functions */
-
-int
-main(argc, argv)
- int argc;
- char **argv;
-{
- int c;
- char queue = 'a';
- char *pgm;
-
- enum {
- ATQ, ATRM, AT, BATCH
- }; /* what program we want to run */
- int program = AT; /* our default program */
- char *options = "q:f:mv"; /* default options for at */
- time_t timer;
-
- RELINQUISH_PRIVS
-
- /* 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:mv";
- }
-
- /* process whatever options we can process */
- opterr = 1;
- while ((c = getopt(argc, argv, options)) != EOF)
- 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)) || (queue > 'l'))
- usage();
- break;
-
- default:
- usage();
- break;
- }
- /* end of options eating */
-
- /* select our program */
- switch (program) {
- case ATQ:
-
- REDUCE_PRIV(0);
-
- list_jobs();
- break;
-
- case ATRM:
-
- REDUCE_PRIV(0);
-
- delete_jobs(argc, argv);
- break;
-
- case AT:
- timer = parsetime(argc, argv);
- if (atverify) {
- struct tm *tm = localtime(&timer);
-
- fprintf(stderr, "%s\n", asctime(tm));
- }
- writefile(timer, queue);
- break;
-
- case BATCH:
- writefile(time(NULL), 'b');
- break;
-
- default:
- panic("Internal error");
- break;
- }
- exit(EXIT_SUCCESS);
-}
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