HardenedBSD/usr.bin/mktemp/mktemp.c

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/*-
* Copyright (c) 1994, 1995, 1996, 1998 Peter Wemm <peter@netplex.com.au>
* 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. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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, WHETHER 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.
*
*/
/*
* This program was originally written long ago, originally for a non
* BSD-like OS without mkstemp(). It's been modified over the years
* to use mkstemp() rather than the original O_CREAT|O_EXCL/fstat/lstat
* etc style hacks.
* A cleanup, misc options and mkdtemp() calls were added to try and work
* more like the OpenBSD version - which was first to publish the interface.
*/
#include <err.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#ifndef lint
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
static void usage __P((void));
int
main(int argc, char **argv)
{
int c, fd, ret;
char *tmpdir, *prefix;
char *name;
int dflag, qflag, tflag, uflag;
ret = dflag = qflag = tflag = uflag = 0;
prefix = "mktemp";
name = NULL;
while ((c = getopt(argc, argv, "dqt:u")) != -1)
switch (c) {
case 'd':
dflag++;
break;
case 'q':
qflag++;
break;
case 't':
prefix = optarg;
tflag++;
break;
case 'u':
uflag++;
break;
default:
usage();
}
argc -= optind;
argv += optind;
if (tflag) {
tmpdir = getenv("TMPDIR");
if (tmpdir == NULL)
asprintf(&name, "%s%s.XXXXXXXX", _PATH_TMP, prefix);
else
asprintf(&name, "%s/%s.XXXXXXXX", tmpdir, prefix);
/* if this fails, the program is in big trouble already */
if (name == NULL) {
if (qflag)
return (1);
else
errx(1, "cannot generate template");
}
} else if (argc < 1) {
usage();
}
/* generate all requested files */
while (name != NULL || argc > 0) {
if (name == NULL) {
name = strdup(argv[0]);
argv++;
argc--;
}
if (dflag) {
if (mkdtemp(name) == NULL) {
ret = 1;
if (!qflag)
warn("mkdtemp failed on %s", name);
} else {
printf("%s\n", name);
if (uflag)
rmdir(name);
}
} else {
fd = mkstemp(name);
if (fd < 0) {
ret = 1;
if (!qflag)
warn("mkstemp failed on %s", name);
} else {
close(fd);
if (uflag)
unlink(name);
printf("%s\n", name);
}
}
if (name)
free(name);
name = NULL;
}
return (ret);
}
static void
usage()
{
fprintf(stderr,
"usage: mktemp [-d] [-q] [-t prefix] [-u] [template ...]\n");
exit (1);
}