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'reseed_srand' event - libratbox and various ssl stuff need it

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This commit is contained in:
Valery Yatsko 2008-04-20 08:26:14 +04:00
parent f20a07457b
commit d80645d0e2
1 changed files with 42 additions and 1 deletions
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43
src/ircd.c
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@ -502,6 +502,47 @@ setup_corefile(void)
struct ev_entry *check_splitmode_ev = NULL;
static int
seed_with_urandom(void)
{
unsigned int seed;
int fd;
fd = open("/dev/urandom", O_RDONLY);
if(fd >= 0)
{
if(read(fd, &seed, sizeof(seed)) == sizeof(seed))
{
close(fd);
srand(seed);
return 1;
}
}
return 0;
}
static void
seed_with_clock(void)
{
const struct timeval *tv;
rb_set_time();
tv = rb_current_time_tv();
srand(tv->tv_sec ^ (tv->tv_usec | (getpid() << 20)));
}
static void
seed_random(void *unused)
{
unsigned int seed;
if(rb_get_random(&seed, sizeof(seed)) == -1)
{
if(!seed_with_urandom())
seed_with_clock();
return;
}
srand(seed);
}
/*
* main
*
@ -719,8 +760,8 @@ main(int argc, char *argv[])
*/
rb_event_addish("try_connections", try_connections, NULL, STARTUP_CONNECTIONS_TIME);
rb_event_addonce("try_connections_startup", try_connections, NULL, 0);
rb_event_add("check_rehash", check_rehash, NULL, 1);
rb_event_addish("reseed_srand", seed_random, NULL, 300); /* reseed every 10 minutes */
if(splitmode)
check_splitmode_ev = rb_event_add("check_splitmode", check_splitmode, NULL, 2);