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/*
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright © 2022 Keith Packard
*
* 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.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
* COPYRIGHT HOLDER 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.
*/
#define _DEFAULT_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define check(condition, message) \
do { \
if (!(condition)) { \
printf("%s: %s\n", message, #condition); \
if (f) \
fclose(f); \
(void)remove(template); \
exit(1); \
} \
} while (0)
static const char NAME_TEMPLATE[] = "foo-XXXXXX";
static const char NAME_TEMPLATE_EXT[] = "foo-XXXXXX.txt";
#define EXT_LEN 4
#define MESSAGE "hello, world\n"
static void
check_contents(char *template, int repeats)
{
FILE *f;
char *s;
int r;
int c;
f = fopen(template, "r");
check(f != NULL, "fopen r");
for (r = 0; r < repeats; r++) {
for (s = MESSAGE; *s; s++) {
c = getc(f);
check((char)c == *s, "contents");
}
}
c = getc(f);
check(c == EOF, "EOF");
r = fclose(f);
f = NULL;
check(r == 0, "fclose r");
}
/* Allow testing mktemp which is deprecated (for good reason) */
#if ((__GNUC__ == 4 && __GNUC_MINOR__ >= 2) || __GNUC__ > 4)
#pragma GCC diagnostic ignored "-Wpragmas"
#pragma GCC diagnostic ignored "-Wunknown-warning-option"
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
#endif
int
main(void)
{
char template[sizeof(NAME_TEMPLATE_EXT)];
char *s_ret;
FILE *f = NULL;
int i_ret;
/* Create temp file */
strcpy(template, NAME_TEMPLATE);
s_ret = mktemp(template);
check(s_ret == template, "mktemp");
/* Make sure we can create a file, write contents and read them back */
f = fopen(template, "w");
check(f != NULL, "fopen w");
fputs(MESSAGE, f);
fclose(f);
f = NULL;
check_contents(template, 1);
(void)remove(template);
/* Create temp file */
strcpy(template, NAME_TEMPLATE);
i_ret = mkstemp(template);
check(i_ret >= 0, "mkstemp");
/* Make sure we can create a file, write contents and read them back */
f = fdopen(i_ret, "w");
check(f != NULL, "fopen w");
fputs(MESSAGE, f);
fclose(f);
f = NULL;
check_contents(template, 1);
(void)remove(template);
/* Create temp file with extension */
strcpy(template, NAME_TEMPLATE_EXT);
i_ret = mkstemps(template, EXT_LEN);
check(i_ret >= 0, "mkstemps");
/* Make sure the name still ends with the extension */
check(strcmp(template + sizeof(NAME_TEMPLATE_EXT) - EXT_LEN,
NAME_TEMPLATE_EXT + sizeof(NAME_TEMPLATE_EXT) - EXT_LEN)
== 0,
"extension");
f = fdopen(i_ret, "w");
check(f != NULL, "fopen w");
fputs(MESSAGE, f);
fclose(f);
check_contents(template, 1);
(void)remove(template);
exit(0);
}
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