-/* $Id$ */
-
/***
This file is part of PulseAudio.
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
-#include <string.h>
#include <stdlib.h>
#include <time.h>
+#ifdef HAVE_WINDOWS_H
+#include <windows.h>
+#include <wincrypt.h>
+#endif
+
#include <pulsecore/core-util.h>
#include <pulsecore/log.h>
#include <pulsecore/macro.h>
#include "random.h"
-static int has_whined = 0;
+static bool has_whined = false;
static const char * const devices[] = { "/dev/urandom", "/dev/random", NULL };
static int random_proper(void *ret_data, size_t length) {
#ifdef OS_IS_WIN32
+ int ret = -1;
+
+ HCRYPTPROV hCryptProv = 0;
+
pa_assert(ret_data);
pa_assert(length > 0);
- return -1;
+ if (CryptAcquireContext(&hCryptProv, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT | CRYPT_SILENT)) {
+ if (CryptGenRandom(hCryptProv, length, ret_data))
+ ret = 0;
+ CryptReleaseContext(hCryptProv, 0);
+ }
+
+ return ret;
#else /* OS_IS_WIN32 */
while (*device) {
ret = 0;
- if ((fd = open(*device, O_RDONLY)) >= 0) {
+ if ((fd = pa_open_cloexec(*device, O_RDONLY, 0)) >= 0) {
if ((r = pa_loop_read(fd, ret_data, length, NULL)) < 0 || (size_t) r != length)
ret = -1;
- close(fd);
+ pa_close(fd);
} else
ret = -1;
if (ret == 0)
break;
+
+ device++;
}
return ret;
unsigned int seed;
if (random_proper(&seed, sizeof(unsigned int)) < 0) {
- if (!has_whined)
+
+ if (!has_whined) {
pa_log_warn("Failed to get proper entropy. Falling back to seeding with current time.");
- has_whined = 1;
+ has_whined = true;
+ }
seed = (unsigned int) time(NULL);
}
if (random_proper(ret_data, length) >= 0)
return;
- if (!has_whined)
+ if (!has_whined) {
pa_log_warn("Failed to get proper entropy. Falling back to unsecure pseudo RNG.");
- has_whined = 1;
+ has_whined = true;
+ }
for (p = ret_data, l = length; l > 0; p++, l--)
*p = (uint8_t) rand();