rnd: break out prng from xutils

We only need it in curvetun, this makes it easier to maintain.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>

1 files changed, 0 insertions, 45 deletions

diff --git a/xio.c b/xio.c
index 991ff7f..da17206 100644
--- a/xio.c
+++ b/xio.c
@@ -158,51 +158,6 @@ ssize_t write_exact(int fd, void *buf, size_t len, int mayexit)
 	return num;
 }
 
-static int fd_rnd = -1;
-
-static void randombytes(unsigned char *x, unsigned long long xlen)
-{
-	int ret;
-
-	if (fd_rnd == -1) {
-		for (;;) {
-			fd_rnd = open("/dev/urandom", O_RDONLY);
-			if (fd_rnd != -1)
-				break;
-			sleep(1);
-		}
-	}
-
-	while (xlen > 0) {
-		if (xlen < 1048576)
-			ret = xlen;
-		else
-			ret = 1048576;
-
-		ret = read(fd_rnd, x, ret);
-		if (ret < 1) {
-			sleep(1);
-			continue;
-		}
-
-		x += ret;
-		xlen -= ret;
-	}
-}
-
-/* Note: it's not really secure, but the name only suggests it's better to use
- * than rand(3) when transferring bytes over the network in non-security
- * critical structure members. secrand() is only used to fill up salts actually.
- */
-int secrand(void)
-{
-	int ret;
-
-	randombytes((void *) &ret, sizeof(ret));
-
-	return ret;
-}
-
 static char const *priov[] = {
 	[LOG_EMERG]	=	"EMERG:",
 	[LOG_ALERT]	=	"ALERT:",