src/libfreeswan/initaddr.c

@@ -0,0 +1,51 @@
+/*
+ * initialize address structure
+ * 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: initaddr.c,v 1.1 2004/03/15 20:35:26 as Exp $
+ */
+#include "internal.h"
+#include "freeswan.h"
+
+/*
+ - initaddr - initialize ip_address from bytes
+ */
+err_t				/* NULL for success, else string literal */
+initaddr(src, srclen, af, dst)
+const unsigned char *src;
+size_t srclen;
+int af;				/* address family */
+ip_address *dst;
+{
+	switch (af) {
+	case AF_INET:
+		if (srclen != 4)
+			return "IPv4 address must be exactly 4 bytes";
+		dst->u.v4.sin_family = af;
+		dst->u.v4.sin_port = 0;		/* unused */
+		memcpy((char *)&dst->u.v4.sin_addr.s_addr, src, srclen);
+		break;
+	case AF_INET6:
+		if (srclen != 16)
+			return "IPv6 address must be exactly 16 bytes";
+		dst->u.v6.sin6_family = af;
+		dst->u.v6.sin6_flowinfo = 0;		/* unused */
+		dst->u.v6.sin6_port = 0;		/* unused */
+		memcpy((char *)&dst->u.v6.sin6_addr, src, srclen);
+		break;
+	default:
+		return "unknown address family in initaddr";
+		break;
+	}
+	return NULL;
+}