1 files changed, 78 insertions, 0 deletions
diff --git a/lib/nettle/sysrng-netbsd.c b/lib/nettle/sysrng-netbsd.c
new file mode 100644
index 0000000..7f74b4e
--- /dev/null
+++ b/lib/nettle/sysrng-netbsd.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2010-2016 Free Software Foundation, Inc.
+ * Copyright (C) 2015-2016 Red Hat, Inc.
+ *
+ * Author: Nia Alarie
+ *
+ * This file is part of GNUTLS.
+ *
+ * The GNUTLS library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>
+ *
+ */
+
+/*
+ * The *BSD sysctl-based system random generator.
+ * Used on NetBSD.
+ */
+
+#include "gnutls_int.h"
+#include "errors.h"
+#include <locks.h>
+#include <num.h>
+#include <errno.h>
+#include <rnd-common.h>
+
+#include <sys/sysctl.h>
+
+#define	ARRAY_SIZE(A)	(sizeof(A)/sizeof((A)[0]))
+
+get_entropy_func _rnd_get_system_entropy = NULL;
+
+static int _rnd_get_system_entropy_sysctl(void* _rnd, size_t size)
+{
+	static int name[] = {CTL_KERN, KERN_ARND};
+	size_t count, req;
+	unsigned char* p;
+
+	p = _rnd;
+	while (size) {
+		req = size < 32 ? size : 32;
+		count = req;
+
+		if (sysctl(name, ARRAY_SIZE(name), p, &count, NULL, 0) == -1) {
+			return GNUTLS_E_RANDOM_DEVICE_ERROR;
+		}
+
+		if (count != req) {
+			return GNUTLS_E_RANDOM_DEVICE_ERROR; /* Can't happen. */
+		}
+
+		p += count;
+		size -= count;
+	}
+
+	return 0;
+}
+
+int _rnd_system_entropy_init(void)
+{
+	_rnd_get_system_entropy = _rnd_get_system_entropy_sysctl;
+	return 0;
+}
+
+void _rnd_system_entropy_deinit(void)
+{
+	return;
+}
+