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fix build on _WIN32

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This commit is contained in:
Pavol Rusnak 2015-12-14 22:50:09 +01:00
parent 6726547a88
commit 3556c74740
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GPG Key ID: 91F3B339B9A02A3D
1 changed files with 21 additions and 0 deletions
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21
rand.c
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@ -22,7 +22,11 @@
*/ */
#include <stdio.h> #include <stdio.h>
#ifdef _WIN32
#include <time.h>
#else
#include <assert.h> #include <assert.h>
#endif
#include "rand.h" #include "rand.h"
@ -30,14 +34,22 @@ static FILE *frand = NULL;
int finalize_rand(void) int finalize_rand(void)
{ {
#ifdef _WIN32
return 0;
#else
if (!frand) return 0; if (!frand) return 0;
int err = fclose(frand); int err = fclose(frand);
frand = NULL; frand = NULL;
return err; return err;
#endif
} }
uint32_t random32(void) uint32_t random32(void)
{ {
#ifdef _WIN32
srand((unsigned)time(NULL));
return ((rand() % 0xFF) | ((rand() % 0xFF) << 8) | ((rand() % 0xFF) << 16) | ((rand() % 0xFF) << 24));
#else
uint32_t r; uint32_t r;
size_t len = sizeof(r); size_t len = sizeof(r);
if (!frand) { if (!frand) {
@ -47,6 +59,7 @@ uint32_t random32(void)
(void)len_read; (void)len_read;
assert(len_read == len); assert(len_read == len);
return r; return r;
#endif
} }
uint32_t random_uniform(uint32_t n) uint32_t random_uniform(uint32_t n)
@ -58,12 +71,20 @@ uint32_t random_uniform(uint32_t n)
void random_buffer(uint8_t *buf, size_t len) void random_buffer(uint8_t *buf, size_t len)
{ {
#ifdef _WIN32
srand((unsigned)time(NULL));
size_t i;
for (i = 0; i < len; i++) {
buf[i] = rand() % 0xFF;
}
#else
if (!frand) { if (!frand) {
frand = fopen("/dev/urandom", "r"); frand = fopen("/dev/urandom", "r");
} }
size_t len_read = fread(buf, 1, len, frand); size_t len_read = fread(buf, 1, len, frand);
(void)len_read; (void)len_read;
assert(len_read == len); assert(len_read == len);
#endif
} }
void random_permute(char *str, size_t len) void random_permute(char *str, size_t len)