openbsd-ports/net/putty/patches/patch-unix_uxnoise_c
2013-01-13 10:12:52 +00:00

83 lines
2.2 KiB
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$OpenBSD: patch-unix_uxnoise_c,v 1.3 2013/01/13 10:12:52 brad Exp $
--- unix/uxnoise.c.orig Wed Sep 16 18:28:20 2009
+++ unix/uxnoise.c Thu Dec 27 01:32:29 2012
@@ -49,38 +49,11 @@ static int read_dev_urandom(char *buf, int len)
void noise_get_heavy(void (*func) (void *, int))
{
- char buf[512];
- FILE *fp;
- int ret;
- int got_dev_urandom = 0;
+ char buf[32];
- if (read_dev_urandom(buf, 32)) {
- got_dev_urandom = 1;
- func(buf, 32);
- }
+ if (read_dev_urandom(buf, sizeof(buf)))
+ func(buf, sizeof(buf));
- fp = popen("ps -axu 2>/dev/null", "r");
- if (fp) {
- while ( (ret = fread(buf, 1, sizeof(buf), fp)) > 0)
- func(buf, ret);
- pclose(fp);
- } else if (!got_dev_urandom) {
- fprintf(stderr, "popen: %s\n"
- "Unable to access fallback entropy source\n", strerror(errno));
- exit(1);
- }
-
- fp = popen("ls -al /tmp 2>/dev/null", "r");
- if (fp) {
- while ( (ret = fread(buf, 1, sizeof(buf), fp)) > 0)
- func(buf, ret);
- pclose(fp);
- } else if (!got_dev_urandom) {
- fprintf(stderr, "popen: %s\n"
- "Unable to access fallback entropy source\n", strerror(errno));
- exit(1);
- }
-
read_random_seed(func);
random_save_seed();
}
@@ -114,21 +87,13 @@ void noise_get_light(void (*func) (void *, int))
*/
void noise_regular(void)
{
- int fd;
- int ret;
- char buf[512];
+ u_int32_t buf[8], i;
struct rusage rusage;
- if ((fd = open("/proc/meminfo", O_RDONLY)) >= 0) {
- while ( (ret = read(fd, buf, sizeof(buf))) > 0)
- random_add_noise(buf, ret);
- close(fd);
- }
- if ((fd = open("/proc/stat", O_RDONLY)) >= 0) {
- while ( (ret = read(fd, buf, sizeof(buf))) > 0)
- random_add_noise(buf, ret);
- close(fd);
- }
+ for (i = 0; i < 8; i++)
+ buf[i] = arc4random();
+ random_add_noise(buf, sizeof(buf));
+
getrusage(RUSAGE_SELF, &rusage);
random_add_noise(&rusage, sizeof(rusage));
}
@@ -141,6 +106,9 @@ void noise_regular(void)
void noise_ultralight(unsigned long data)
{
struct timeval tv;
+ u_int32_t r;
+ r = arc4random();
+ random_add_noise(&r, sizeof(r));
gettimeofday(&tv, NULL);
random_add_noise(&tv, sizeof(tv));
random_add_noise(&data, sizeof(data));