From: Cristian Rodríguez <cristian@rodriguez.im>
Date: Wed, 28 Aug 2024 14:52:51 +0000 (-0400)
Subject: If RNG is already seeded, return early
X-Git-Tag: 1.9.0-rc.1~13^2~1^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3c8b1b98a3af74a83850f8f03a11e56954437a2f;p=thirdparty%2Fldns.git

If RNG is already seeded, return early

Most of the time, in most systems the openSSL RNG seeds itself
automatically, in that case rand status returns 1, this is
sufficient to return early.
---

diff --git a/util.c b/util.c
index 662aa23a..83d31f70 100644
--- a/util.c
+++ b/util.c
@@ -346,6 +346,11 @@ ldns_init_random(FILE *fd, unsigned int size)
 	unsigned int seed_i;
 	struct timeval tv;
 
+#ifdef HAVE_SSL
+	if(RAND_status() == 1)
+		/* already seeded */
+		return 0;
+#endif
 	/* we'll need at least sizeof(unsigned int) bytes for the
 	   standard prng seed */
 	if (size < (unsigned int) sizeof(seed_i)){