1 files changed, 51 insertions, 0 deletions
diff --git a/rfc1035/rfc1035ipv6to4.c b/rfc1035/rfc1035ipv6to4.c
new file mode 100644
index 0000000..d63e9e4
--- /dev/null
+++ b/rfc1035/rfc1035ipv6to4.c
@@ -0,0 +1,51 @@
+/*
+** Copyright 2000-2003 Double Precision, Inc.
+** See COPYING for distribution information.
+*/
+
+#include	"config.h"
+#include	"rfc1035.h"
+#include	<stdio.h>
+#include	<string.h>
+#include	<stdlib.h>
+#include	<arpa/inet.h>
+
+
+#if RFC1035_FREEBSD40
+#define	s6_addr16	__u6_addr.__u6_addr16
+#define s6_addr32	__u6_addr.__u6_addr32
+#endif
+
+#if RFC1035_SOLARIS8
+#define s6_addr32	_S6_un._S6_u32
+#endif
+
+#if RFC1035_IPV6
+
+void rfc1035_ipv6to4(struct in_addr *ip4, const struct in6_addr *ip6)
+{
+	ip4->s_addr=ip6->s6_addr32[3];
+}
+
+void rfc1035_ipv4to6(struct in6_addr *ip6, const struct in_addr *ip4)
+{
+	memset(ip6, 0, sizeof(*ip6));
+
+#if RFC1035_SOLARIS8
+
+	/* No 16-bit union <grumble>... */
+
+	ip6->_S6_un._S6_u8[10]= ~0;
+	ip6->_S6_un._S6_u8[11]= ~0;
+
+#else
+	ip6->s6_addr16[5]= ~0;
+#endif
+
+	ip6->s6_addr32[3]= ip4->s_addr;
+
+	if (ip4->s_addr == INADDR_ANY)
+		*ip6= in6addr_any;
+}
+#endif
+