1 files changed, 146 insertions, 0 deletions
diff --git a/src/libfreeswan/anyaddr.c b/src/libfreeswan/anyaddr.c
new file mode 100644
index 000000000..08aae6334
--- /dev/null
+++ b/src/libfreeswan/anyaddr.c
@@ -0,0 +1,146 @@
+/*
+ * special addresses
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * 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 Library General Public
+ * License for more details.
+ *
+ * RCSID $Id: anyaddr.c,v 1.1 2004/03/15 20:35:25 as Exp $
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/* these are mostly fallbacks for the no-IPv6-support-in-library case */
+#ifndef IN6ADDR_ANY_INIT
+#define	IN6ADDR_ANY_INIT	{{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }}
+#endif
+#ifndef IN6ADDR_LOOPBACK_INIT
+#define	IN6ADDR_LOOPBACK_INIT	{{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 }}
+#endif
+
+static struct in6_addr v6any = IN6ADDR_ANY_INIT;
+static struct in6_addr v6loop = IN6ADDR_LOOPBACK_INIT;
+
+/*
+ - anyaddr - initialize to the any-address value
+ */
+err_t				/* NULL for success, else string literal */
+anyaddr(af, dst)
+int af;				/* address family */
+ip_address *dst;
+{
+	uint32_t v4any = htonl(INADDR_ANY);
+
+	switch (af) {
+	case AF_INET:
+		return initaddr((unsigned char *)&v4any, sizeof(v4any), af, dst);
+		break;
+	case AF_INET6:
+		return initaddr((unsigned char *)&v6any, sizeof(v6any), af, dst);
+		break;
+	default:
+		return "unknown address family in anyaddr/unspecaddr";
+		break;
+	}
+}
+
+/*
+ - unspecaddr - initialize to the unspecified-address value
+ */
+err_t				/* NULL for success, else string literal */
+unspecaddr(af, dst)
+int af;				/* address family */
+ip_address *dst;
+{
+	return anyaddr(af, dst);
+}
+
+/*
+ - loopbackaddr - initialize to the loopback-address value
+ */
+err_t				/* NULL for success, else string literal */
+loopbackaddr(af, dst)
+int af;				/* address family */
+ip_address *dst;
+{
+	uint32_t v4loop = htonl(INADDR_LOOPBACK);
+
+	switch (af) {
+	case AF_INET:
+		return initaddr((unsigned char *)&v4loop, sizeof(v4loop), af, dst);
+		break;
+	case AF_INET6:
+		return initaddr((unsigned char *)&v6loop, sizeof(v6loop), af, dst);
+		break;
+	default:
+		return "unknown address family in loopbackaddr";
+		break;
+	}
+}
+
+/*
+ - isanyaddr - test for the any-address value
+ */
+int
+isanyaddr(src)
+const ip_address *src;
+{
+	uint32_t v4any = htonl(INADDR_ANY);
+	int cmp;
+
+	switch (src->u.v4.sin_family) {
+	case AF_INET:
+		cmp = memcmp(&src->u.v4.sin_addr.s_addr, &v4any, sizeof(v4any));
+		break;
+	case AF_INET6:
+		cmp = memcmp(&src->u.v6.sin6_addr, &v6any, sizeof(v6any));
+		break;
+	default:
+		return 0;
+		break;
+	}
+
+	return (cmp == 0) ? 1 : 0;
+}
+
+/*
+ - isunspecaddr - test for the unspecified-address value
+ */
+int
+isunspecaddr(src)
+const ip_address *src;
+{
+	return isanyaddr(src);
+}
+
+/*
+ - isloopbackaddr - test for the loopback-address value
+ */
+int
+isloopbackaddr(src)
+const ip_address *src;
+{
+	uint32_t v4loop = htonl(INADDR_LOOPBACK);
+	int cmp;
+
+	switch (src->u.v4.sin_family) {
+	case AF_INET:
+		cmp = memcmp(&src->u.v4.sin_addr.s_addr, &v4loop, sizeof(v4loop));
+		break;
+	case AF_INET6:
+		cmp = memcmp(&src->u.v6.sin6_addr, &v6loop, sizeof(v6loop));
+		break;
+	default:
+		return 0;
+		break;
+	}
+
+	return (cmp == 0) ? 1 : 0;
+}