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Loose end from timing shakeup: sshrand.c is now a client of

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timing.c, and hence takes its own responsibility for calling
noise_regular() at regular intervals. Again, this means it will be
called consistently in _all_ the SSH-speaking tools, not just those
in which I remembered to call it!

[originally from svn r4913]
This commit is contained in:
Simon Tatham
2004-11-27 19:56:38 +00:00
parent 9fc67313fb
commit 8c69ba0672
7 changed files with 38 additions and 15 deletions
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27
sshrand.c
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@ -5,6 +5,9 @@
#include "putty.h"
#include "ssh.h"
/* Collect environmental noise every 5 minutes */
#define NOISE_REGULAR_INTERVAL (5*60*TICKSPERSEC)
void noise_get_heavy(void (*func) (void *, int));
void noise_get_light(void (*func) (void *, int));
@ -41,6 +44,7 @@ struct RandPool {
static struct RandPool pool;
int random_active = 0;
long next_noise_collection;
static void random_stir(void)
{
@ -182,16 +186,33 @@ static void random_add_heavynoise_bitbybit(void *noise, int length)
pool.poolpos = i;
}
void random_init(void)
static void random_timer(void *ctx, long now)
{
if (random_active > 0 && now - next_noise_collection >= 0) {
noise_regular();
next_noise_collection =
schedule_timer(NOISE_REGULAR_INTERVAL, random_timer, &pool);
}
}
void random_ref(void)
{
if (!random_active) {
memset(&pool, 0, sizeof(pool)); /* just to start with */
random_active = 1;
noise_get_heavy(random_add_heavynoise_bitbybit);
random_stir();
next_noise_collection =
schedule_timer(NOISE_REGULAR_INTERVAL, random_timer, &pool);
}
random_active++;
}
void random_unref(void)
{
random_active--;
}
int random_byte(void)