GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/mktemp/mktemp.c Lines: 22 68 32.4 %
Date: 2016-12-06 Branches: 12 47 25.5 %

Line Branch Exec Source
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/*	$OpenBSD: mktemp.c,v 1.22 2015/10/09 01:37:08 deraadt Exp $	*/
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/*
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 * Copyright (c) 1996, 1997, 2001-2003, 2013
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 *	Todd C. Miller <Todd.Miller@courtesan.com>
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 *
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 * Permission to use, copy, modify, and distribute this software for any
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 * purpose with or without fee is hereby granted, provided that the above
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 * copyright notice and this permission notice appear in all copies.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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 */
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#include <err.h>
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#include <paths.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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__dead void usage(void);
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__dead void fatal(const char *, ...) __attribute__((__format__(printf, 1, 2)));
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__dead void fatalx(const char *, ...) __attribute__((__format__(printf, 1, 2)));
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static int quiet;
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int
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main(int argc, char *argv[])
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{
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	int ch, fd, uflag = 0, tflag = 0, makedir = 0;
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	char *cp, *template, *tempfile, *prefix = _PATH_TMP;
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	size_t len;
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	if (pledge("stdio rpath wpath cpath", NULL) == -1)
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		err(1, "pledge");
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	while ((ch = getopt(argc, argv, "dp:qtu")) != -1)
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		switch(ch) {
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		case 'd':
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			makedir = 1;
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			break;
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		case 'p':
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			prefix = optarg;
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			tflag = 1;
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			break;
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		case 'q':
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			quiet = 1;
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			break;
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		case 't':
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			tflag = 1;
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			break;
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		case 'u':
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			uflag = 1;
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			break;
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		default:
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			usage();
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	}
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	/* If no template specified use a default one (implies -t mode) */
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	switch (argc - optind) {
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	case 1:
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		template = argv[optind];
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		break;
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	case 0:
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		template = "tmp.XXXXXXXXXX";
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		tflag = 1;
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		break;
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	default:
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		usage();
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	}
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	len = strlen(template);
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	if (len < 6 || strcmp(&template[len - 6], "XXXXXX")) {
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		fatalx("insufficient number of Xs in template `%s'",
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		    template);
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	}
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	if (tflag) {
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		if (strchr(template, '/')) {
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			fatalx("template must not contain directory "
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			    "separators in -t mode");
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		}
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		cp = getenv("TMPDIR");
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		if (cp != NULL && *cp != '\0')
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			prefix = cp;
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		len = strlen(prefix);
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		while (len != 0 && prefix[len - 1] == '/')
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			len--;
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		if (asprintf(&tempfile, "%.*s/%s", (int)len, prefix, template) < 0)
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			tempfile = NULL;
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	} else
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		tempfile = strdup(template);
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	if (tempfile == NULL)
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		fatalx("cannot allocate memory");
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	if (makedir) {
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		if (mkdtemp(tempfile) == NULL)
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			fatal("cannot make temp dir %s", tempfile);
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		if (uflag)
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			(void)rmdir(tempfile);
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	} else {
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		if ((fd = mkstemp(tempfile)) < 0)
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			fatal("cannot make temp file %s", tempfile);
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		(void)close(fd);
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		if (uflag)
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			(void)unlink(tempfile);
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	}
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	(void)puts(tempfile);
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	free(tempfile);
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	exit(EXIT_SUCCESS);
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}
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__dead void
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fatal(const char *fmt, ...)
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{
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	if (!quiet) {
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		va_list ap;
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		va_start(ap, fmt);
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		vwarn(fmt, ap);
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		va_end(ap);
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	}
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	exit(EXIT_FAILURE);
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}
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__dead void
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fatalx(const char *fmt, ...)
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{
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	if (!quiet) {
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		va_list ap;
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		va_start(ap, fmt);
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		vwarnx(fmt, ap);
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		va_end(ap);
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	}
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	exit(EXIT_FAILURE);
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}
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__dead void
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usage(void)
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{
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	extern char *__progname;
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	(void)fprintf(stderr,
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	    "usage: %s [-dqtu] [-p directory] [template]\n", __progname);
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	exit(EXIT_FAILURE);
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}