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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* 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 <getopt.h>
#include <paths.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
static void usage(void) __dead2;
static const struct option long_opts[] = {
{"directory", no_argument, NULL, 'd'},
{"tmpdir", optional_argument, NULL, 'p'},
{"quiet", no_argument, NULL, 'q'},
{"dry-run", no_argument, NULL, 'u'},
{NULL, no_argument, NULL, 0},
};
int
main(int argc, char **argv)
{
int c, fd, ret;
const char *prefix, *tmpdir;
char *name;
int dflag, qflag, tflag, uflag;
bool prefer_tmpdir;
ret = dflag = qflag = tflag = uflag = 0;
prefer_tmpdir = true;
prefix = "mktemp";
name = NULL;
tmpdir = NULL;
while ((c = getopt_long(argc, argv, "dp:qt:u", long_opts, NULL)) != -1)
switch (c) {
case 'd':
dflag++;
break;
case 'p':
tmpdir = optarg;
if (tmpdir == NULL || *tmpdir == '\0')
tmpdir = getenv("TMPDIR");
/*
* We've already done the necessary environment
* fallback, skip the later one.
*/
prefer_tmpdir = false;
break;
case 'q':
qflag++;
break;
case 't':
prefix = optarg;
tflag++;
break;
case 'u':
uflag++;
break;
default:
usage();
}
argc -= optind;
argv += optind;
if (!tflag && argc < 1) {
tflag = 1;
prefix = "tmp";
/*
* For this implied -t mode, we actually want to swap the usual
* order of precedence: -p, then TMPDIR, then /tmp.
*/
prefer_tmpdir = false;
}
if (tflag) {
const char *envtmp;
size_t len;
envtmp = NULL;
/*
* $TMPDIR preferred over `-p` if specified, for compatibility.
*/
if (prefer_tmpdir || tmpdir == NULL)
envtmp = getenv("TMPDIR");
if (envtmp != NULL)
tmpdir = envtmp;
if (tmpdir == NULL)
tmpdir = _PATH_TMP;
len = strlen(tmpdir);
if (len > 0 && tmpdir[len - 1] == '/')
asprintf(&name, "%s%s.XXXXXXXXXX", tmpdir, prefix);
else
asprintf(&name, "%s/%s.XXXXXXXXXX", 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");
}
}
/* generate all requested files */
while (name != NULL || argc > 0) {
if (name == NULL) {
if (!tflag && tmpdir != NULL)
asprintf(&name, "%s/%s", tmpdir, argv[0]);
else
name = strdup(argv[0]);
if (name == NULL)
err(1, "%s", 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(void)
{
fprintf(stderr,
"usage: mktemp [-d] [-p tmpdir] [-q] [-t prefix] [-u] template "
"...\n");
fprintf(stderr,
" mktemp [-d] [-p tmpdir] [-q] [-u] -t prefix \n");
exit (1);
}
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