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Code Issues Releases Wiki Activity

1405. [func] Use arc4random() if available.

Browse Source 
from: jakob@crt.se
reviewed: marka
This commit is contained in:
Mark Andrews
2002-12-04 01:19:28 +00:00
parent 297a2cb41e
commit 5b76a09697
6 changed files with 43 additions and 5 deletions
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16
lib/isc/random.c
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@@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: random.c,v 1.15 2001/01/09 21:56:22 bwelling Exp $ */
/* $Id: random.c,v 1.16 2002/12/04 01:19:28 marka Exp $ */
#include <config.h>
@@ -33,7 +33,9 @@ static isc_once_t once = ISC_ONCE_INIT;
static void
initialize_rand(void)
{
#ifndef HAVE_ARC4RANDOM
srand(time(NULL));
#endif
}
static void
@@ -47,7 +49,11 @@ isc_random_seed(isc_uint32_t seed)
{
initialize();
#ifndef HAVE_ARC4RANDOM
srand(seed);
#else
arc4random_addrandom((u_char *) &seed, sizeof(isc_uint32_t));
#endif
}
void
@@ -57,7 +63,11 @@ isc_random_get(isc_uint32_t *val)
initialize();
#ifndef HAVE_ARC4RANDOM
*val = rand();
#else
*val = arc4random();
#endif
}
isc_uint32_t
@@ -66,5 +76,9 @@ isc_random_jitter(isc_uint32_t max, isc_uint32_t jitter) {
if (jitter == 0)
return (max);
else
#ifndef HAVE_ARC4RANDOM
return (max - rand() % jitter);
#else
return (max - arc4random() % jitter);
#endif
}