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/*
* This file is part of the bladeRF project:
* http://www.github.com/Nuand/bladeRF
*
* Copyright (c) 2018 Nuand LLC
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
// _CRT_RAND_S must be defined before including stdlib.h, to enable rand_s
#define _CRT_RAND_S
#include <stdlib.h>
#ifdef WINDOWS_MKDTEMP_TEST_SUITE
// Running in standalone test mode
#include <stdbool.h>
#include <stdio.h>
#define __debug(...) fprintf(stderr, __VA_ARGS__)
#ifndef WIN32
// Running standalone test on non-Windows OS
#include <time.h>
#include <unistd.h>
#define errno_t int
errno_t rand_s(unsigned int *randomValue)
{
*randomValue = rand();
return 0;
}
#endif // WIN32
#else
// Building as part of a library
#ifndef WIN32
#error "This file is intended for use with WIN32 systems only."
#endif // WIN32
#define __debug(...)
#endif // WINDOWS_MKDTEMP_TEST_SUITE
#include <errno.h>
#include <string.h>
#include <sys/stat.h>
#include "host_config.h"
// The concepts of F_OK and S_IRWXU do not exist on Win32
#ifndef F_OK
#define F_OK 0
#endif
#ifndef S_IRWXU
#define S_IRWXU 00700
#endif
/* h/t https://stackoverflow.com/a/14598879 */
static int random_number(int min_num, int max_num)
{
int result = 0, low_num = 0, hi_num = 0;
unsigned int randomValue;
if (min_num < max_num) {
low_num = min_num;
hi_num = max_num + 1; // include max_num in output
} else {
low_num = max_num + 1; // include max_num in output
hi_num = min_num;
}
// Use rand_s() on Windows, so that we don't have to deal with srand()
errno_t err = rand_s(&randomValue);
if (0 != err) {
return -1;
}
result = (randomValue % (hi_num - low_num)) + low_num;
return result;
}
char *mkdtemp(char *template)
{
size_t const TEMPL_LEN = 6;
char const TEMPL_CHAR = 'X';
if (strlen(template) <= TEMPL_LEN) {
// template is too short
errno = EINVAL;
goto error;
}
// Loop through the end of the template, replacing 'X' with random char
for (size_t i = strlen(template) - TEMPL_LEN; i < strlen(template); ++i) {
// The last TEMPL_LEN characters MUST be 'X'
if (template[i] != TEMPL_CHAR) {
errno = EINVAL;
goto error;
}
// Pick a random letter
if (random_number(0, 1)) {
template[i] = (char)random_number('A', 'Z');
} else {
template[i] = (char)random_number('a', 'z');
}
}
// Error out if the file already exists
if (access(template, F_OK) != -1) {
__debug("%s: failed: %s exists\n", __FUNCTION__, template);
errno = EEXIST;
goto error;
}
// Try to create the directory...
if (0 != mkdir(template, S_IRWXU)) {
int errsv = errno;
__debug("%s: mkdir() failed: %s\n", __FUNCTION__, strerror(errsv));
goto error;
}
// Success!
errno = 0;
return template;
error:
return NULL;
}
#ifdef WINDOWS_MKDTEMP_TEST_SUITE
/**
* These functions are intended to verify proper operation of the test suite.
*/
static bool test(char *template, bool expect_success)
{
char *rv = mkdtemp(template);
if (NULL == rv) {
int errsv = errno;
printf("%s: mkdtemp failed: %s\n", __FUNCTION__, strerror(errsv));
return (false == expect_success);
} else {
printf("%s: mkdtemp created: %s\n", __FUNCTION__, rv);
if (0 != rmdir(rv)) {
int errsv = errno;
printf("%s: rmdir failed: %s\n", __FUNCTION__, strerror(errsv));
}
return (true == expect_success);
}
}
int main(int argc, char *argv[])
{
#ifndef WIN32
srand(time(NULL));
#endif // WIN32
int success = 0, failure = 0;
// Normal: should pass
char template1[] = "/tmp/asdf.XXXXXX";
if (test(template1, true)) {
printf("*** Test case 1: PASS\n");
++success;
} else {
printf("*** Test case 1: FAIL\n");
++failure;
}
// Too short: should fail
char template2[] = "XXXXXX";
if (test(template2, false)) {
printf("*** Test case 2: PASS\n");
++success;
} else {
printf("*** Test case 2: FAIL\n");
++failure;
}
// Not enough replacement Xs: should fail
char template3[] = "/tmp/asdf.XXXXX";
if (test(template3, false)) {
printf("*** Test case 3: PASS\n");
++success;
} else {
printf("*** Test case 3: FAIL\n");
++failure;
}
// Make sure it only replaces the end: should pass
char template4[] = "/tmp/asdfXXXXXX.XXXXXX";
if (test(template4, true)) {
printf("*** Test case 4: PASS\n");
++success;
} else {
printf("*** Test case 4: FAIL\n");
++failure;
}
// Really long: should fail
char template5[] = "/tmp/asdfaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaXXXXXX";
if (test(template5, false)) {
printf("*** Test case 5: PASS\n");
++success;
} else {
printf("*** Test case 5: FAIL\n");
++failure;
}
// Unwriteable path: should fail
char template6[] = "/asdfkjavblkjadv/asdf.XXXX";
if (test(template6, false)) {
printf("*** Test case 6: PASS\n");
++success;
} else {
printf("*** Test case 6: FAIL\n");
++failure;
}
printf("TEST SUMMARY: Success=%d, Failure=%d\n", success, failure);
return failure;
}
#endif // WINDOWS_MKDTEMP_TEST_SUITE
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