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/* $OpenBSD: mktemp.c,v 1.25 2019/06/28 05:35:34 deraadt Exp $ */
/*
* Copyright (c) 1996, 1997, 2001-2003, 2013
* Todd C. Miller <millert@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <err.h>
#include <paths.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
__dead void usage(void);
__dead void fatal(const char *, ...) __attribute__((__format__(printf, 1, 2)));
__dead void fatalx(const char *, ...) __attribute__((__format__(printf, 1, 2)));
static int quiet;
int
main(int argc, char *argv[])
{
int ch, fd, uflag = 0, tflag = 0, makedir = 0;
char *cp, *template, *tempfile, *prefix = _PATH_TMP;
size_t len;
if (pledge("stdio rpath wpath cpath", NULL) == -1)
err(1, "pledge");
while ((ch = getopt(argc, argv, "dp:qtu")) != -1)
switch(ch) {
case 'd':
makedir = 1;
break;
case 'p':
prefix = optarg;
tflag = 1;
break;
case 'q':
quiet = 1;
break;
case 't':
tflag = 1;
break;
case 'u':
uflag = 1;
break;
default:
usage();
}
/* If no template specified use a default one (implies -t mode) */
switch (argc - optind) {
case 1:
template = argv[optind];
break;
case 0:
template = "tmp.XXXXXXXXXX";
tflag = 1;
break;
default:
usage();
}
len = strlen(template);
if (len < 6 || strcmp(&template[len - 6], "XXXXXX")) {
fatalx("insufficient number of Xs in template `%s'",
template);
}
if (tflag) {
if (strchr(template, '/')) {
fatalx("template must not contain directory "
"separators in -t mode");
}
cp = getenv("TMPDIR");
if (cp != NULL && *cp != '\0')
prefix = cp;
len = strlen(prefix);
while (len != 0 && prefix[len - 1] == '/')
len--;
if (asprintf(&tempfile, "%.*s/%s", (int)len, prefix, template) == -1)
tempfile = NULL;
} else
tempfile = strdup(template);
if (tempfile == NULL)
fatalx("cannot allocate memory");
if (makedir) {
if (mkdtemp(tempfile) == NULL)
fatal("cannot make temp dir %s", tempfile);
if (uflag)
(void)rmdir(tempfile);
} else {
if ((fd = mkstemp(tempfile)) == -1)
fatal("cannot make temp file %s", tempfile);
(void)close(fd);
if (uflag)
(void)unlink(tempfile);
}
(void)puts(tempfile);
free(tempfile);
exit(EXIT_SUCCESS);
}
__dead void
fatal(const char *fmt, ...)
{
if (!quiet) {
va_list ap;
va_start(ap, fmt);
vwarn(fmt, ap);
va_end(ap);
}
exit(EXIT_FAILURE);
}
__dead void
fatalx(const char *fmt, ...)
{
if (!quiet) {
va_list ap;
va_start(ap, fmt);
vwarnx(fmt, ap);
va_end(ap);
}
exit(EXIT_FAILURE);
}
__dead void
usage(void)
{
extern char *__progname;
(void)fprintf(stderr,
"usage: %s [-dqtu] [-p directory] [template]\n", __progname);
exit(EXIT_FAILURE);
}
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