Import initial strongswan 2.7.0 version into SVN.

14 files changed, 2883 insertions, 0 deletions

diff --git a/lib/liblwres/include/lwres/async.h b/lib/liblwres/include/lwres/async.h
new file mode 100644
index 000000000..6715afaed
--- /dev/null
+++ b/lib/liblwres/include/lwres/async.h
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2003  Michael Richardson
+ * Contributed by Michael Richardson <mcr@freeswan.org> while working
+ * on the Linux FreeS/WAN project in 2003.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+ * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
+ * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: async.h,v 1.1 2004/03/15 20:35:25 as Exp $ */
+
+#ifndef LWRES_ASYNC_H
+#define LWRES_ASYNC_H 1
+
+#include <lwres/lwres.h>
+
+/*
+ * support for asynchronous requests to lwres port
+ */
+struct lwres_async_state {
+	struct lwres_async_state *next;
+
+	lwres_buffer_t            b_in, b_out;
+	lwres_uint32_t            serial;
+	int                       opcode;
+
+	int (*callback)(void *uctx, struct rrsetinfo *res);
+	void *uctx;
+};
+
+
+
+/*
+ * The calls for asynchronous requests.
+ */
+
+int lwres_async_init(lwres_context_t **pctx);
+
+int lwres_getrrsetbyname_init(const char *hostname, unsigned int rdclass,
+			      unsigned int rdtype, unsigned int flags,
+			      lwres_context_t *ctx,
+			      struct lwres_async_state *las);
+
+int lwres_getrrsetbyname_xmit(lwres_context_t *ctx,
+			      struct lwres_async_state *las);
+
+unsigned long lwres_async_timeout(lwres_context_t *ctx);
+
+int lwres_async_fd(lwres_context_t *ctx);
+
+int lwres_getrrsetbyname_read(struct lwres_async_state **plas,
+			      lwres_context_t *ctx,
+			      struct rrsetinfo **res);
+
+int lwres_getrrsetbyname_async(const char *hostname, unsigned int rdclass,
+			       unsigned int rdtype, unsigned int flags,
+			       struct rrsetinfo **res);
+
+#endif /* LWRES_ASYNC_H */
+
+
+
+
+
+
+
+
+
diff --git a/lib/liblwres/include/lwres/context.h b/lib/liblwres/include/lwres/context.h
new file mode 100644
index 000000000..55ca3c7fb
--- /dev/null
+++ b/lib/liblwres/include/lwres/context.h
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2000, 2001  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+ * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
+ * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: context.h,v 1.1 2004/03/15 20:35:25 as Exp $ */
+
+#ifndef LWRES_CONTEXT_H
+#define LWRES_CONTEXT_H 1
+
+#include <stddef.h>
+
+#include <lwres/lang.h>
+#include <lwres/int.h>
+#include <lwres/result.h>
+
+/*
+ * Used to set various options such as timeout, authentication, etc
+ */
+typedef struct lwres_context lwres_context_t;
+
+LWRES_LANG_BEGINDECLS
+
+typedef void *(*lwres_malloc_t)(void *arg, size_t length);
+typedef void (*lwres_free_t)(void *arg, void *mem, size_t length);
+
+/*
+ * XXXMLG
+ *
+ * Make the server reload /etc/resolv.conf periodically.
+ *
+ * Make the server do sortlist/searchlist.
+ *
+ * Client side can disable the search/sortlist processing.
+ *
+ * Use an array of addresses/masks and searchlist for client-side, and
+ * if added to the client disable the processing on the server.
+ *
+ * Share /etc/resolv.conf data between contexts.
+ */
+
+/*
+ * _SERVERMODE
+ *	Don't allocate and connect a socket to the server, since the
+ *	caller _is_ a server.
+ */
+#define LWRES_CONTEXT_SERVERMODE	0x00000001U
+
+lwres_result_t
+lwres_context_create(lwres_context_t **contextp, void *arg,
+		     lwres_malloc_t malloc_function,
+		     lwres_free_t free_function,
+		     unsigned int flags);
+/*
+ * Allocate a lwres context.  This is used in all lwres calls.
+ *
+ * Memory management can be replaced here by passing in two functions.
+ * If one is non-NULL, they must both be non-NULL.  "arg" is passed to
+ * these functions.
+ *
+ * Contexts are not thread safe.  Document at the top of the file.
+ * XXXMLG
+ *
+ * If they are NULL, the standard malloc() and free() will be used.
+ *
+ * Requires:
+ *
+ *	contextp != NULL && contextp == NULL.
+ *
+ * Returns:
+ *
+ *	Returns 0 on success, non-zero on failure.
+ */
+
+void
+lwres_context_destroy(lwres_context_t **contextp);
+/*
+ * Frees all memory associated with a lwres context.
+ *
+ * Requires:
+ *
+ *	contextp != NULL && contextp == NULL.
+ */
+
+lwres_uint32_t
+lwres_context_nextserial(lwres_context_t *ctx);
+/*
+ * XXXMLG Document
+ */
+
+void
+lwres_context_initserial(lwres_context_t *ctx, lwres_uint32_t serial);
+
+void
+lwres_context_freemem(lwres_context_t *ctx, void *mem, size_t len);
+
+void *
+lwres_context_allocmem(lwres_context_t *ctx, size_t len);
+
+int
+lwres_context_getsocket(lwres_context_t *ctx);
+
+lwres_result_t
+lwres_context_send(lwres_context_t *ctx,
+		   void *sendbase, int sendlen);
+
+lwres_result_t
+lwres_context_recv(lwres_context_t *ctx,
+		   void *recvbase, int recvlen,
+		   int *recvd_len);
+
+lwres_result_t
+lwres_context_sendrecv(lwres_context_t *ctx,
+		       void *sendbase, int sendlen,
+		       void *recvbase, int recvlen,
+		       int *recvd_len);
+
+LWRES_LANG_ENDDECLS
+
+#endif /* LWRES_CONTEXT_H */
+
diff --git a/lib/liblwres/include/lwres/int.h b/lib/liblwres/include/lwres/int.h
new file mode 100644
index 000000000..470372e77
--- /dev/null
+++ b/lib/liblwres/include/lwres/int.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2000, 2001  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+ * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
+ * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: int.h,v 1.1 2004/03/15 20:35:25 as Exp $ */
+
+#ifndef LWRES_INT_H
+#define LWRES_INT_H 1
+
+typedef char				lwres_int8_t;
+typedef unsigned char			lwres_uint8_t;
+typedef short				lwres_int16_t;
+typedef unsigned short			lwres_uint16_t;
+typedef int				lwres_int32_t;
+typedef unsigned int			lwres_uint32_t;
+typedef long long			lwres_int64_t;
+typedef unsigned long long		lwres_uint64_t;
+
+#endif /* LWRES_INT_H */
diff --git a/lib/liblwres/include/lwres/ipv6.h b/lib/liblwres/include/lwres/ipv6.h
new file mode 100644
index 000000000..ee7bc0743
--- /dev/null
+++ b/lib/liblwres/include/lwres/ipv6.h
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2000, 2001  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+ * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
+ * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: ipv6.h,v 1.1 2004/03/15 20:35:25 as Exp $ */
+
+#ifndef LWRES_IPV6_H
+#define LWRES_IPV6_H 1
+
+/*****
+ ***** Module Info
+ *****/
+
+/*
+ * IPv6 definitions for systems which do not support IPv6.
+ */
+
+/***
+ *** Imports.
+ ***/
+
+#include <lwres/int.h>
+#include <lwres/platform.h>
+
+/***
+ *** Types.
+ ***/
+
+struct in6_addr {
+        union {
+		lwres_uint8_t	_S6_u8[16];
+		lwres_uint16_t	_S6_u16[8];
+		lwres_uint32_t	_S6_u32[4];
+        } _S6_un;
+};
+#define s6_addr		_S6_un._S6_u8
+#define s6_addr8	_S6_un._S6_u8
+#define s6_addr16	_S6_un._S6_u16
+#define s6_addr32	_S6_un._S6_u32
+
+#define IN6ADDR_ANY_INIT 	{{{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }}}
+#define IN6ADDR_LOOPBACK_INIT 	{{{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 }}}
+
+LIBLWRES_EXTERNAL_DATA extern const struct in6_addr in6addr_any;
+LIBLWRES_EXTERNAL_DATA extern const struct in6_addr in6addr_loopback;
+
+struct sockaddr_in6 {
+#ifdef LWRES_PLATFORM_HAVESALEN
+	lwres_uint8_t		sin6_len;
+	lwres_uint8_t		sin6_family;
+#else
+	lwres_uint16_t		sin6_family;
+#endif
+	lwres_uint16_t		sin6_port;
+	lwres_uint32_t		sin6_flowinfo;
+	struct in6_addr		sin6_addr;
+	lwres_uint32_t		sin6_scope_id;
+};
+
+#ifdef LWRES_PLATFORM_HAVESALEN
+#define SIN6_LEN 1
+#endif
+
+struct in6_pktinfo {
+	struct in6_addr ipi6_addr;    /* src/dst IPv6 address */
+	unsigned int    ipi6_ifindex; /* send/recv interface index */
+};
+
+/*
+ * Unspecified
+ */
+#define IN6_IS_ADDR_UNSPECIFIED(a)      \
+        (((a)->s6_addr32[0] == 0) &&    \
+         ((a)->s6_addr32[1] == 0) &&    \
+         ((a)->s6_addr32[2] == 0) &&    \
+         ((a)->s6_addr32[3] == 0))
+
+/*
+ * Loopback
+ */
+#define IN6_IS_ADDR_LOOPBACK(a)         \
+        (((a)->s6_addr32[0] == 0) &&    \
+         ((a)->s6_addr32[1] == 0) &&    \
+         ((a)->s6_addr32[2] == 0) &&    \
+         ((a)->s6_addr32[3] == htonl(1)))
+
+/*
+ * IPv4 compatible
+ */
+#define IN6_IS_ADDR_V4COMPAT(a)         \
+        (((a)->s6_addr32[0] == 0) &&    \
+         ((a)->s6_addr32[1] == 0) &&    \
+         ((a)->s6_addr32[2] == 0) &&    \
+         ((a)->s6_addr32[3] != 0) &&    \
+         ((a)->s6_addr32[3] != htonl(1)))
+
+/*
+ * Mapped
+ */
+#define IN6_IS_ADDR_V4MAPPED(a)               \
+        (((a)->s6_addr32[0] == 0) &&          \
+         ((a)->s6_addr32[1] == 0) &&          \
+         ((a)->s6_addr32[2] == htonl(0x0000ffff)))
+
+#endif /* LWRES_IPV6_H */
diff --git a/lib/liblwres/include/lwres/lang.h b/lib/liblwres/include/lwres/lang.h
new file mode 100644
index 000000000..1de35fd91
--- /dev/null
+++ b/lib/liblwres/include/lwres/lang.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2000, 2001  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+ * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
+ * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: lang.h,v 1.1 2004/03/15 20:35:25 as Exp $ */
+
+#ifndef LWRES_LANG_H
+#define LWRES_LANG_H 1
+
+#ifdef __cplusplus
+#define LWRES_LANG_BEGINDECLS	extern "C" {
+#define LWRES_LANG_ENDDECLS	}
+#else
+#define LWRES_LANG_BEGINDECLS
+#define LWRES_LANG_ENDDECLS
+#endif
+
+#endif /* LWRES_LANG_H */
diff --git a/lib/liblwres/include/lwres/list.h b/lib/liblwres/include/lwres/list.h
new file mode 100644
index 000000000..e90a1b55a
--- /dev/null
+++ b/lib/liblwres/include/lwres/list.h
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 1997-2001  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+ * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
+ * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: list.h,v 1.1 2004/03/15 20:35:25 as Exp $ */
+
+#ifndef LWRES_LIST_H
+#define LWRES_LIST_H 1
+
+#define LWRES_LIST(type) struct { type *head, *tail; }
+#define LWRES_LIST_INIT(list) \
+	do { (list).head = NULL; (list).tail = NULL; } while (0)
+
+#define LWRES_LINK(type) struct { type *prev, *next; }
+#define LWRES_LINK_INIT(elt, link) \
+	do { \
+		(elt)->link.prev = (void *)(-1); \
+		(elt)->link.next = (void *)(-1); \
+	} while (0)
+#define LWRES_LINK_LINKED(elt, link) \
+	((void *)((elt)->link.prev) != (void *)(-1))
+
+#define LWRES_LIST_HEAD(list) ((list).head)
+#define LWRES_LIST_TAIL(list) ((list).tail)
+#define LWRES_LIST_EMPTY(list) LWRES_TF((list).head == NULL)
+
+#define LWRES_LIST_PREPEND(list, elt, link) \
+	do { \
+		if ((list).head != NULL) \
+			(list).head->link.prev = (elt); \
+		else \
+			(list).tail = (elt); \
+		(elt)->link.prev = NULL; \
+		(elt)->link.next = (list).head; \
+		(list).head = (elt); \
+	} while (0)
+
+#define LWRES_LIST_APPEND(list, elt, link) \
+	do { \
+		if ((list).tail != NULL) \
+			(list).tail->link.next = (elt); \
+		else \
+			(list).head = (elt); \
+		(elt)->link.prev = (list).tail; \
+		(elt)->link.next = NULL; \
+		(list).tail = (elt); \
+	} while (0)
+
+#define LWRES_LIST_UNLINK(list, elt, link) \
+	do { \
+		if ((elt)->link.next != NULL) \
+			(elt)->link.next->link.prev = (elt)->link.prev; \
+		else \
+			(list).tail = (elt)->link.prev; \
+		if ((elt)->link.prev != NULL) \
+			(elt)->link.prev->link.next = (elt)->link.next; \
+		else \
+			(list).head = (elt)->link.next; \
+		(elt)->link.prev = (void *)(-1); \
+		(elt)->link.next = (void *)(-1); \
+	} while (0)
+
+#define LWRES_LIST_PREV(elt, link) ((elt)->link.prev)
+#define LWRES_LIST_NEXT(elt, link) ((elt)->link.next)
+
+#define LWRES_LIST_INSERTBEFORE(list, before, elt, link) \
+	do { \
+		if ((before)->link.prev == NULL) \
+			LWRES_LIST_PREPEND(list, elt, link); \
+		else { \
+			(elt)->link.prev = (before)->link.prev; \
+			(before)->link.prev = (elt); \
+			(elt)->link.prev->link.next = (elt); \
+			(elt)->link.next = (before); \
+		} \
+	} while (0)
+
+#define LWRES_LIST_INSERTAFTER(list, after, elt, link) \
+	do { \
+		if ((after)->link.next == NULL) \
+			LWRES_LIST_APPEND(list, elt, link); \
+		else { \
+			(elt)->link.next = (after)->link.next; \
+			(after)->link.next = (elt); \
+			(elt)->link.next->link.prev = (elt); \
+			(elt)->link.prev = (after); \
+		} \
+	} while (0)
+
+#define LWRES_LIST_APPENDLIST(list1, list2, link) \
+	do { \
+		if (LWRES_LIST_EMPTY(list1)) \
+			(list1) = (list2); \
+		else if (!LWRES_LIST_EMPTY(list2)) { \
+			(list1).tail->link.next = (list2).head; \
+			(list2).head->link.prev = (list1).tail; \
+			(list1).tail = (list2).tail; \
+		} \
+		(list2).head = NULL; \
+		(list2).tail = NULL; \
+	} while (0)
+
+#define LWRES_LIST_ENQUEUE(list, elt, link) LWRES_LIST_APPEND(list, elt, link)
+#define LWRES_LIST_DEQUEUE(list, elt, link) LWRES_LIST_UNLINK(list, elt, link)
+
+#endif /* LWRES_LIST_H */
diff --git a/lib/liblwres/include/lwres/lwbuffer.h b/lib/liblwres/include/lwres/lwbuffer.h
new file mode 100644
index 000000000..7486e8bc3
--- /dev/null
+++ b/lib/liblwres/include/lwres/lwbuffer.h
@@ -0,0 +1,402 @@
+/*
+ * Copyright (C) 2000, 2001  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+ * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
+ * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: lwbuffer.h,v 1.1 2004/03/15 20:35:25 as Exp $ */
+
+#ifndef LWRES_LWBUFFER_H
+#define LWRES_LWBUFFER_H 1
+
+/*****
+ ***** Module Info
+ *****/
+
+/*
+ * Buffers
+ *
+ * A buffer is a region of memory, together with a set of related subregions.
+ * Buffers are used for parsing and I/O operations.
+ *
+ * The 'used region' and the 'available' region are disjoint, and their
+ * union is the buffer's region.  The used region extends from the beginning
+ * of the buffer region to the last used byte.  The available region
+ * extends from one byte greater than the last used byte to the end of the
+ * buffer's region.  The size of the used region can be changed using various
+ * buffer commands.  Initially, the used region is empty.
+ *
+ * The used region is further subdivided into two disjoint regions: the
+ * 'consumed region' and the 'remaining region'.  The union of these two
+ * regions is the used region.  The consumed region extends from the beginning
+ * of the used region to the byte before the 'current' offset (if any).  The
+ * 'remaining' region the current pointer to the end of the used
+ * region.  The size of the consumed region can be changed using various
+ * buffer commands.  Initially, the consumed region is empty.
+ *
+ * The 'active region' is an (optional) subregion of the remaining region.
+ * It extends from the current offset to an offset in the remaining region
+ * that is selected with lwres_buffer_setactive().  Initially, the active
+ * region is empty.  If the current offset advances beyond the chosen offset,
+ * the active region will also be empty.
+ *
+ *  /----- used region -----\/-- available --\
+ *  +----------------------------------------+
+ *  | consumed  | remaining |                |
+ *  +----------------------------------------+
+ *  a           b     c     d                e
+ *
+ * a == base of buffer.
+ * b == current pointer.  Can be anywhere between a and d.
+ * c == active pointer.  Meaningful between b and d.
+ * d == used pointer.
+ * e == length of buffer.
+ *
+ * a-e == entire (length) of buffer.
+ * a-d == used region.
+ * a-b == consumed region.
+ * b-d == remaining region.
+ * b-c == optional active region.
+ *
+ * The following invariants are maintained by all routines:
+ *
+ *	length > 0
+ *
+ *	base is a valid pointer to length bytes of memory
+ *
+ *	0 <= used <= length
+ *
+ *	0 <= current <= used
+ *
+ *	0 <= active <= used
+ *	(although active < current implies empty active region)
+ *
+ * MP:
+ *	Buffers have no synchronization.  Clients must ensure exclusive
+ *	access.
+ *
+ * Reliability:
+ *	No anticipated impact.
+ *
+ * Resources:
+ *	Memory: 1 pointer + 6 unsigned integers per buffer.
+ *
+ * Security:
+ *	No anticipated impact.
+ *
+ * Standards:
+ *	None.
+ */
+
+/***
+ *** Imports
+ ***/
+
+#include <lwres/lang.h>
+#include <lwres/int.h>
+
+LWRES_LANG_BEGINDECLS
+
+/***
+ *** Magic numbers
+ ***/
+#define LWRES_BUFFER_MAGIC		0x4275663fU	/* Buf?. */
+
+#define LWRES_BUFFER_VALID(b)		((b) != NULL && \
+					 (b)->magic == LWRES_BUFFER_MAGIC)
+
+/*
+ * The following macros MUST be used only on valid buffers.  It is the
+ * caller's responsibility to ensure this by using the LWRES_BUFFER_VALID
+ * check above, or by calling another lwres_buffer_*() function (rather than
+ * another macro.)
+ */
+
+/*
+ * Get the length of the used region of buffer "b"
+ */
+#define LWRES_BUFFER_USEDCOUNT(b)	((b)->used)
+
+/*
+ * Get the length of the available region of buffer "b"
+ */
+#define LWRES_BUFFER_AVAILABLECOUNT(b)	((b)->length - (b)->used)
+
+#define LWRES_BUFFER_REMAINING(b)	((b)->used - (b)->current)
+
+/*
+ * Note that the buffer structure is public.  This is principally so buffer
+ * operations can be implemented using macros.  Applications are strongly
+ * discouraged from directly manipulating the structure.
+ */
+
+typedef struct lwres_buffer lwres_buffer_t;
+struct lwres_buffer {
+	unsigned int		magic;
+	unsigned char 	       *base;
+	/* The following integers are byte offsets from 'base'. */
+	unsigned int		length;
+	unsigned int		used;
+	unsigned int 		current;
+	unsigned int 		active;
+};
+
+/***
+ *** Functions
+ ***/
+
+void
+lwres_buffer_init(lwres_buffer_t *b, void *base, unsigned int length);
+/*
+ * Make 'b' refer to the 'length'-byte region starting at base.
+ *
+ * Requires:
+ *
+ *	'length' > 0
+ *
+ *	'base' is a pointer to a sequence of 'length' bytes.
+ *
+ */
+
+void
+lwres_buffer_invalidate(lwres_buffer_t *b);
+/*
+ * Make 'b' an invalid buffer.
+ *
+ * Requires:
+ *	'b' is a valid buffer.
+ *
+ * Ensures:
+ *	If assertion checking is enabled, future attempts to use 'b' without
+ *	calling lwres_buffer_init() on it will cause an assertion failure.
+ */
+
+void
+lwres_buffer_add(lwres_buffer_t *b, unsigned int n);
+/*
+ * Increase the 'used' region of 'b' by 'n' bytes.
+ *
+ * Requires:
+ *
+ *	'b' is a valid buffer
+ *
+ *	used + n <= length
+ *
+ */
+
+void
+lwres_buffer_subtract(lwres_buffer_t *b, unsigned int n);
+/*
+ * Decrease the 'used' region of 'b' by 'n' bytes.
+ *
+ * Requires:
+ *
+ *	'b' is a valid buffer
+ *
+ *	used >= n
+ *
+ */
+
+void
+lwres_buffer_clear(lwres_buffer_t *b);
+/*
+ * Make the used region empty.
+ *
+ * Requires:
+ *
+ *	'b' is a valid buffer
+ *
+ * Ensures:
+ *
+ *	used = 0
+ *
+ */
+
+void
+lwres_buffer_first(lwres_buffer_t *b);
+/*
+ * Make the consumed region empty.
+ *
+ * Requires:
+ *
+ *	'b' is a valid buffer
+ *
+ * Ensures:
+ *
+ *	current == 0
+ *
+ */
+
+void
+lwres_buffer_forward(lwres_buffer_t *b, unsigned int n);
+/*
+ * Increase the 'consumed' region of 'b' by 'n' bytes.
+ *
+ * Requires:
+ *
+ *	'b' is a valid buffer
+ *
+ *	current + n <= used
+ *
+ */
+
+void
+lwres_buffer_back(lwres_buffer_t *b, unsigned int n);
+/*
+ * Decrease the 'consumed' region of 'b' by 'n' bytes.
+ *
+ * Requires:
+ *
+ *	'b' is a valid buffer
+ *
+ *	n <= current
+ *
+ */
+
+lwres_uint8_t
+lwres_buffer_getuint8(lwres_buffer_t *b);
+/*
+ * Read an unsigned 8-bit integer from 'b' and return it.
+ *
+ * Requires:
+ *
+ *	'b' is a valid buffer.
+ *
+ *	The length of the available region of 'b' is at least 1.
+ *
+ * Ensures:
+ *
+ *	The current pointer in 'b' is advanced by 1.
+ *
+ * Returns:
+ *
+ *	A 8-bit unsigned integer.
+ */
+
+void
+lwres_buffer_putuint8(lwres_buffer_t *b, lwres_uint8_t val);
+/*
+ * Store an unsigned 8-bit integer from 'val' into 'b'.
+ *
+ * Requires:
+ *	'b' is a valid buffer.
+ *
+ *	The length of the unused region of 'b' is at least 1.
+ *
+ * Ensures:
+ *	The used pointer in 'b' is advanced by 1.
+ */
+
+lwres_uint16_t
+lwres_buffer_getuint16(lwres_buffer_t *b);
+/*
+ * Read an unsigned 16-bit integer in network byte order from 'b', convert
+ * it to host byte order, and return it.
+ *
+ * Requires:
+ *
+ *	'b' is a valid buffer.
+ *
+ *	The length of the available region of 'b' is at least 2.
+ *
+ * Ensures:
+ *
+ *	The current pointer in 'b' is advanced by 2.
+ *
+ * Returns:
+ *
+ *	A 16-bit unsigned integer.
+ */
+
+void
+lwres_buffer_putuint16(lwres_buffer_t *b, lwres_uint16_t val);
+/*
+ * Store an unsigned 16-bit integer in host byte order from 'val'
+ * into 'b' in network byte order.
+ *
+ * Requires:
+ *	'b' is a valid buffer.
+ *
+ *	The length of the unused region of 'b' is at least 2.
+ *
+ * Ensures:
+ *	The used pointer in 'b' is advanced by 2.
+ */
+
+lwres_uint32_t
+lwres_buffer_getuint32(lwres_buffer_t *b);
+/*
+ * Read an unsigned 32-bit integer in network byte order from 'b', convert
+ * it to host byte order, and return it.
+ *
+ * Requires:
+ *
+ *	'b' is a valid buffer.
+ *
+ *	The length of the available region of 'b' is at least 2.
+ *
+ * Ensures:
+ *
+ *	The current pointer in 'b' is advanced by 2.
+ *
+ * Returns:
+ *
+ *	A 32-bit unsigned integer.
+ */
+
+void
+lwres_buffer_putuint32(lwres_buffer_t *b, lwres_uint32_t val);
+/*
+ * Store an unsigned 32-bit integer in host byte order from 'val'
+ * into 'b' in network byte order.
+ *
+ * Requires:
+ *	'b' is a valid buffer.
+ *
+ *	The length of the unused region of 'b' is at least 4.
+ *
+ * Ensures:
+ *	The used pointer in 'b' is advanced by 4.
+ */
+
+void
+lwres_buffer_putmem(lwres_buffer_t *b, const unsigned char *base,
+		    unsigned int length);
+/*
+ * Copy 'length' bytes of memory at 'base' into 'b'.
+ *
+ * Requires:
+ *	'b' is a valid buffer.
+ *
+ *	'base' points to 'length' bytes of valid memory.
+ *
+ */
+
+void
+lwres_buffer_getmem(lwres_buffer_t *b, unsigned char *base,
+		    unsigned int length);
+/*
+ * Copy 'length' bytes of memory from 'b' into 'base'.
+ *
+ * Requires:
+ *	'b' is a valid buffer.
+ *
+ *	'base' points to at least 'length' bytes of valid memory.
+ *
+ *	'b' have at least 'length' bytes remaining.
+ */
+
+LWRES_LANG_ENDDECLS
+
+#endif /* LWRES_LWBUFFER_H */
diff --git a/lib/liblwres/include/lwres/lwpacket.h b/lib/liblwres/include/lwres/lwpacket.h
new file mode 100644
index 000000000..a0d216e57
--- /dev/null
+++ b/lib/liblwres/include/lwres/lwpacket.h
@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 1999-2001  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+ * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
+ * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: lwpacket.h,v 1.1 2004/03/15 20:35:25 as Exp $ */
+
+#ifndef LWRES_LWPACKET_H
+#define LWRES_LWPACKET_H 1
+
+#include <lwres/lang.h>
+#include <lwres/lwbuffer.h>
+#include <lwres/result.h>
+
+typedef struct lwres_lwpacket lwres_lwpacket_t;
+
+struct lwres_lwpacket {
+	lwres_uint32_t		length;
+	lwres_uint16_t		version;
+	lwres_uint16_t		pktflags;
+	lwres_uint32_t		serial;
+	lwres_uint32_t		opcode;
+	lwres_uint32_t		result;
+	lwres_uint32_t		recvlength;
+	lwres_uint16_t		authtype;
+	lwres_uint16_t		authlength;
+};
+
+#define LWRES_LWPACKET_LENGTH		(4 * 5 + 2 * 4)
+
+#define LWRES_LWPACKETFLAG_RESPONSE	0x0001U	/* if set, pkt is a response */
+
+
+#define LWRES_LWPACKETVERSION_0		0
+
+/*
+ * "length" is the overall packet length, including the entire packet header.
+ *
+ * "version" specifies the header format.  Currently, there is only one
+ * format, LWRES_LWPACKETVERSION_0.
+ *
+ * "flags" specifies library-defined flags for this packet.  None of these
+ * are definable by the caller, but library-defined values can be set by
+ * the caller.  For example, one bit in this field indicates if the packet
+ * is a request or a response.
+ *
+ * "serial" is set by the requestor and is returned in all replies.  If two
+ * packets from the same source have the same serial number and are from
+ * the same source, they are assumed to be duplicates and the latter ones
+ * may be dropped.  (The library does not do this by default on replies, but
+ * does so on requests.)
+ *
+ * "opcode" is application defined.  Opcodes between 0x04000000 and 0xffffffff
+ * are application defined.  Opcodes between 0x00000000 and 0x03ffffff are
+ * reserved for library use.
+ *
+ * "result" is application defined, and valid only on replies.
+ * Results between 0x04000000 and 0xffffffff are application defined.
+ * Results between 0x00000000 and 0x03ffffff are reserved for library use.
+ * (This is the same reserved range defined in <isc/resultclass.h>, so it
+ * would be trivial to map ISC_R_* result codes into packet result codes
+ * when appropriate.)
+ *
+ * "recvlength" is set to the maximum buffer size that the receiver can
+ * handle on requests, and the size of the buffer needed to satisfy a request
+ * when the buffer is too large for replies.
+ *
+ * "authtype" is the packet level auth type used.
+ * Authtypes between 0x1000 and 0xffff are application defined.  Authtypes
+ * between 0x0000 and 0x0fff are reserved for library use.  This is currently
+ * unused and MUST be set to zero.
+ *
+ * "authlen" is the length of the authentication data.  See the specific
+ * authtypes for more information on what is contained in this field.  This
+ * is currently unused, and MUST be set to zero.
+ *
+ * The remainder of the packet consists of two regions, one described by
+ * "authlen" and one of "length - authlen - sizeof(lwres_lwpacket_t)".
+ *
+ * That is:
+ *
+ *	pkt header
+ *	authlen bytes of auth information
+ *	data bytes
+ */
+
+/*
+ * Currently defined opcodes:
+ *
+ *	NOOP.  Success is always returned, with the packet contents echoed.
+ *
+ *	GETADDRSBYNAME.  Return all known addresses for a given name.
+ *		This may return NIS or /etc/hosts info as well as DNS
+ *		information.  Flags will be provided to indicate ip4/ip6
+ *		addresses are desired.
+ *
+ *	GETNAMEBYADDR.	Return the hostname for the given address.  Once
+ *		again, it will return data from multiple sources.
+ */
+
+LWRES_LANG_BEGINDECLS
+
+/* XXXMLG document */
+lwres_result_t
+lwres_lwpacket_renderheader(lwres_buffer_t *b, lwres_lwpacket_t *pkt);
+
+lwres_result_t
+lwres_lwpacket_parseheader(lwres_buffer_t *b, lwres_lwpacket_t *pkt);
+
+LWRES_LANG_ENDDECLS
+
+#endif /* LWRES_LWPACKET_H */
diff --git a/lib/liblwres/include/lwres/lwres.h b/lib/liblwres/include/lwres/lwres.h
new file mode 100644
index 000000000..e819c8b68
--- /dev/null
+++ b/lib/liblwres/include/lwres/lwres.h
@@ -0,0 +1,584 @@
+/*
+ * Copyright (C) 2000, 2001  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+ * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
+ * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: lwres.h,v 1.1 2004/03/15 20:35:25 as Exp $ */
+
+#ifndef LWRES_LWRES_H
+#define LWRES_LWRES_H 1
+
+#include <stdio.h>
+
+#include <lwres/context.h>
+#include <lwres/lang.h>
+#include <lwres/list.h>
+#include <lwres/lwpacket.h>
+
+/*
+ * Design notes:
+ *
+ * Each opcode has two structures and three functions which operate on each
+ * structure.  For example, using the "no operation/ping" opcode as an
+ * example:
+ *
+ *	lwres_nooprequest_t:
+ *
+ *		lwres_nooprequest_render() takes a lwres_nooprequest_t and
+ *		and renders it into wire format, storing the allocated
+ *		buffer information in a passed-in buffer.  When this buffer
+ *		is no longer needed, it must be freed by
+ *		lwres_context_freemem().  All other memory used by the
+ *		caller must be freed manually, including the
+ *		lwres_nooprequest_t passed in.
+ *
+ *		lwres_nooprequest_parse() takes a wire format message and
+ *		breaks it out into a lwres_nooprequest_t.  The structure
+ *		must be freed via lwres_nooprequest_free() when it is no longer
+ *		needed.
+ *
+ *		lwres_nooprequest_free() releases into the lwres_context_t
+ *		any space allocated during parsing.
+ *
+ *	lwres_noopresponse_t:
+ *
+ *		The functions used are similar to the three used for
+ *		requests, just with different names.
+ *
+ * Typically, the client will use request_render, response_parse, and
+ * response_free, while the daemon will use request_parse, response_render,
+ * and request_free.
+ *
+ * The basic flow of a typical client is:
+ *
+ *	fill in a request_t, and call the render function.
+ *
+ *	Transmit the buffer returned to the daemon.
+ *
+ *	Wait for a response.
+ *
+ *	When a response is received, parse it into a response_t.
+ *
+ *	free the request buffer using lwres_context_freemem().
+ *
+ *	free the response structure and its associated buffer using
+ *	response_free().
+ */
+
+#define LWRES_UDP_PORT		921
+#define LWRES_RECVLENGTH	16384
+#define LWRES_ADDR_MAXLEN	16	/* changing this breaks ABI */
+#define LWRES_RESOLV_CONF	"/etc/resolv.conf"
+
+/*
+ * Flags.
+ *
+ * 	These flags are only relevant to rrset queries.
+ *
+ *	TRUSTNOTREQUIRED:  DNSSEC is not required (input)
+ *	SECUREDATA: The data was crypto-verified with DNSSEC (output)
+ *
+ */
+#define LWRES_FLAG_TRUSTNOTREQUIRED	0x00000001U
+#define LWRES_FLAG_SECUREDATA		0x00000002U
+
+/*
+ * no-op
+ */
+#define LWRES_OPCODE_NOOP		0x00000000U
+
+typedef struct {
+	/* public */
+	lwres_uint16_t			datalength;
+	unsigned char		       *data;
+} lwres_nooprequest_t;
+
+typedef struct {
+	/* public */
+	lwres_uint16_t			datalength;
+	unsigned char		       *data;
+} lwres_noopresponse_t;
+
+/*
+ * get addresses by name
+ */
+#define LWRES_OPCODE_GETADDRSBYNAME	0x00010001U
+
+typedef struct lwres_addr lwres_addr_t;
+typedef LWRES_LIST(lwres_addr_t) lwres_addrlist_t;
+
+struct lwres_addr {
+	lwres_uint32_t			family;
+	lwres_uint16_t			length;
+	unsigned char			address[LWRES_ADDR_MAXLEN];
+	LWRES_LINK(lwres_addr_t)	link;
+};
+
+typedef struct {
+	/* public */
+	lwres_uint32_t			flags;
+	lwres_uint32_t			addrtypes;
+	lwres_uint16_t			namelen;
+	char			       *name;
+} lwres_gabnrequest_t;
+
+typedef struct {
+	/* public */
+	lwres_uint32_t			flags;
+	lwres_uint16_t			naliases;
+	lwres_uint16_t			naddrs;
+	char			       *realname;
+	char			      **aliases;
+	lwres_uint16_t			realnamelen;
+	lwres_uint16_t		       *aliaslen;
+	lwres_addrlist_t		addrs;
+	/* if base != NULL, it will be freed when this structure is freed. */
+	void			       *base;
+	size_t				baselen;
+} lwres_gabnresponse_t;
+
+/*
+ * get name by address
+ */
+#define LWRES_OPCODE_GETNAMEBYADDR	0x00010002U
+typedef struct {
+	/* public */
+	lwres_uint32_t			flags;
+	lwres_addr_t			addr;
+} lwres_gnbarequest_t;
+
+typedef struct {
+	/* public */
+	lwres_uint32_t			flags;
+	lwres_uint16_t			naliases;
+	char			       *realname;
+	char			      **aliases;
+	lwres_uint16_t			realnamelen;
+	lwres_uint16_t		       *aliaslen;
+	/* if base != NULL, it will be freed when this structure is freed. */
+	void			       *base;
+	size_t				baselen;
+} lwres_gnbaresponse_t;
+
+/*
+ * get rdata by name
+ */
+#define LWRES_OPCODE_GETRDATABYNAME	0x00010003U
+
+typedef struct {
+	/* public */
+	lwres_uint32_t			flags;
+	lwres_uint16_t			rdclass;
+	lwres_uint16_t			rdtype;
+	lwres_uint16_t			namelen;
+	char			       *name;
+} lwres_grbnrequest_t;
+
+typedef struct {
+	/* public */
+	lwres_uint32_t			flags;
+	lwres_uint16_t			rdclass;
+	lwres_uint16_t			rdtype;
+	lwres_uint32_t			ttl;
+	lwres_uint16_t			nrdatas;
+	lwres_uint16_t			nsigs;
+	char			       *realname;
+	lwres_uint16_t			realnamelen;
+	unsigned char		      **rdatas;
+	lwres_uint16_t		       *rdatalen;
+	unsigned char		      **sigs;
+	lwres_uint16_t		       *siglen;
+	/* if base != NULL, it will be freed when this structure is freed. */
+	void			       *base;
+	size_t				baselen;
+} lwres_grbnresponse_t;
+
+#define LWRDATA_VALIDATED	0x00000001
+
+/*
+ * resolv.conf data
+ */
+
+#define LWRES_CONFMAXNAMESERVERS 3	/* max 3 "nameserver" entries */
+#define LWRES_CONFMAXLWSERVERS 1	/* max 1 "lwserver" entry */
+#define LWRES_CONFMAXSEARCH 8		/* max 8 domains in "search" entry */
+#define LWRES_CONFMAXLINELEN 256	/* max size of a line */
+#define LWRES_CONFMAXSORTLIST 10
+typedef struct {
+	lwres_context_t *lwctx;
+	lwres_addr_t    nameservers[LWRES_CONFMAXNAMESERVERS];
+	lwres_uint8_t	nsnext;		/* index for next free slot */
+
+	lwres_addr_t	lwservers[LWRES_CONFMAXLWSERVERS];
+	lwres_uint8_t	lwnext;		/* index for next free slot */
+
+	char	       *domainname;
+
+	char 	       *search[LWRES_CONFMAXSEARCH];
+	lwres_uint8_t	searchnxt;	/* index for next free slot */
+
+	struct {
+		lwres_addr_t addr;
+		/* mask has a non-zero 'family' and 'length' if set */
+		lwres_addr_t mask;
+	} sortlist[LWRES_CONFMAXSORTLIST];
+	lwres_uint8_t	sortlistnxt;
+
+	lwres_uint8_t	resdebug;      /* non-zero if 'options debug' set */
+	lwres_uint8_t	ndots;	       /* set to n in 'options ndots:n' */
+	lwres_uint8_t	no_tld_query;  /* non-zero if 'options no_tld_query' */
+} lwres_conf_t;
+
+#define LWRES_ADDRTYPE_V4		0x00000001U	/* ipv4 */
+#define LWRES_ADDRTYPE_V6		0x00000002U	/* ipv6 */
+
+#define LWRES_MAX_ALIASES		16		/* max # of aliases */
+#define LWRES_MAX_ADDRS			64		/* max # of addrs */
+
+LWRES_LANG_BEGINDECLS
+
+/*
+ * This is in host byte order.
+ */
+extern lwres_uint16_t lwres_udp_port;
+
+extern const char *lwres_resolv_conf;
+
+lwres_result_t
+lwres_gabnrequest_render(lwres_context_t *ctx, lwres_gabnrequest_t *req,
+			 lwres_lwpacket_t *pkt, lwres_buffer_t *b);
+
+lwres_result_t
+lwres_gabnresponse_render(lwres_context_t *ctx, lwres_gabnresponse_t *req,
+			  lwres_lwpacket_t *pkt, lwres_buffer_t *b);
+
+lwres_result_t
+lwres_gabnrequest_parse(lwres_context_t *ctx, lwres_buffer_t *b,
+			lwres_lwpacket_t *pkt, lwres_gabnrequest_t **structp);
+
+lwres_result_t
+lwres_gabnresponse_parse(lwres_context_t *ctx, lwres_buffer_t *b,
+			 lwres_lwpacket_t *pkt,
+			 lwres_gabnresponse_t **structp);
+
+void
+lwres_gabnrequest_free(lwres_context_t *ctx, lwres_gabnrequest_t **structp);
+/*
+ * Frees any dynamically allocated memory for this structure.
+ *
+ * Requires:
+ *
+ *	ctx != NULL, and be a context returned via lwres_contextcreate().
+ *
+ *	structp != NULL && *structp != NULL.
+ *
+ * Ensures:
+ *
+ *	*structp == NULL.
+ *
+ *	All memory allocated by this structure will be returned to the
+ *	system via the context's free function.
+ */
+
+void
+lwres_gabnresponse_free(lwres_context_t *ctx, lwres_gabnresponse_t **structp);
+/*
+ * Frees any dynamically allocated memory for this structure.
+ *
+ * Requires:
+ *
+ *	ctx != NULL, and be a context returned via lwres_contextcreate().
+ *
+ *	structp != NULL && *structp != NULL.
+ *
+ * Ensures:
+ *
+ *	*structp == NULL.
+ *
+ *	All memory allocated by this structure will be returned to the
+ *	system via the context's free function.
+ */
+
+
+lwres_result_t
+lwres_gnbarequest_render(lwres_context_t *ctx, lwres_gnbarequest_t *req,
+			 lwres_lwpacket_t *pkt, lwres_buffer_t *b);
+
+lwres_result_t
+lwres_gnbaresponse_render(lwres_context_t *ctx, lwres_gnbaresponse_t *req,
+			  lwres_lwpacket_t *pkt, lwres_buffer_t *b);
+
+lwres_result_t
+lwres_gnbarequest_parse(lwres_context_t *ctx, lwres_buffer_t *b,
+			lwres_lwpacket_t *pkt, lwres_gnbarequest_t **structp);
+
+lwres_result_t
+lwres_gnbaresponse_parse(lwres_context_t *ctx, lwres_buffer_t *b,
+			 lwres_lwpacket_t *pkt,
+			 lwres_gnbaresponse_t **structp);
+
+void
+lwres_gnbarequest_free(lwres_context_t *ctx, lwres_gnbarequest_t **structp);
+/*
+ * Frees any dynamically allocated memory for this structure.
+ *
+ * Requires:
+ *
+ *	ctx != NULL, and be a context returned via lwres_contextcreate().
+ *
+ *	structp != NULL && *structp != NULL.
+ *
+ * Ensures:
+ *
+ *	*structp == NULL.
+ *
+ *	All memory allocated by this structure will be returned to the
+ *	system via the context's free function.
+ */
+
+void
+lwres_gnbaresponse_free(lwres_context_t *ctx, lwres_gnbaresponse_t **structp);
+/*
+ * Frees any dynamically allocated memory for this structure.
+ *
+ * Requires:
+ *
+ *	ctx != NULL, and be a context returned via lwres_contextcreate().
+ *
+ *	structp != NULL && *structp != NULL.
+ *
+ * Ensures:
+ *
+ *	*structp == NULL.
+ *
+ *	All memory allocated by this structure will be returned to the
+ *	system via the context's free function.
+ */
+
+lwres_result_t
+lwres_grbnrequest_render(lwres_context_t *ctx, lwres_grbnrequest_t *req,
+			 lwres_lwpacket_t *pkt, lwres_buffer_t *b);
+
+lwres_result_t
+lwres_grbnresponse_render(lwres_context_t *ctx, lwres_grbnresponse_t *req,
+			  lwres_lwpacket_t *pkt, lwres_buffer_t *b);
+
+lwres_result_t
+lwres_grbnrequest_parse(lwres_context_t *ctx, lwres_buffer_t *b,
+			lwres_lwpacket_t *pkt, lwres_grbnrequest_t **structp);
+
+lwres_result_t
+lwres_grbnresponse_parse(lwres_context_t *ctx, lwres_buffer_t *b,
+			 lwres_lwpacket_t *pkt,
+			 lwres_grbnresponse_t **structp);
+
+void
+lwres_grbnrequest_free(lwres_context_t *ctx, lwres_grbnrequest_t **structp);
+/*
+ * Frees any dynamically allocated memory for this structure.
+ *
+ * Requires:
+ *
+ *	ctx != NULL, and be a context returned via lwres_contextcreate().
+ *
+ *	structp != NULL && *structp != NULL.
+ *
+ * Ensures:
+ *
+ *	*structp == NULL.
+ *
+ *	All memory allocated by this structure will be returned to the
+ *	system via the context's free function.
+ */
+
+void
+lwres_grbnresponse_free(lwres_context_t *ctx, lwres_grbnresponse_t **structp);
+/*
+ * Frees any dynamically allocated memory for this structure.
+ *
+ * Requires:
+ *
+ *	ctx != NULL, and be a context returned via lwres_contextcreate().
+ *
+ *	structp != NULL && *structp != NULL.
+ *
+ * Ensures:
+ *
+ *	*structp == NULL.
+ *
+ *	All memory allocated by this structure will be returned to the
+ *	system via the context's free function.
+ */
+
+lwres_result_t
+lwres_nooprequest_render(lwres_context_t *ctx, lwres_nooprequest_t *req,
+			 lwres_lwpacket_t *pkt, lwres_buffer_t *b);
+/*
+ * Allocate space and render into wire format a noop request packet.
+ *
+ * Requires:
+ *
+ *	ctx != NULL, and be a context returned via lwres_contextcreate().
+ *
+ *	b != NULL, and points to a lwres_buffer_t.  The contents of the
+ *	buffer structure will be initialized to contain the wire-format
+ *	noop request packet.
+ *
+ *	Caller needs to fill in parts of "pkt" before calling:
+ *		serial, maxrecv, result.
+ *
+ * Returns:
+ *
+ *	Returns 0 on success, non-zero on failure.
+ *
+ *	On successful return, *b will contain data about the wire-format
+ *	packet.  It can be transmitted in any way, including lwres_sendblock().
+ */
+
+lwres_result_t
+lwres_noopresponse_render(lwres_context_t *ctx, lwres_noopresponse_t *req,
+			  lwres_lwpacket_t *pkt, lwres_buffer_t *b);
+
+lwres_result_t
+lwres_nooprequest_parse(lwres_context_t *ctx, lwres_buffer_t *b,
+			lwres_lwpacket_t *pkt, lwres_nooprequest_t **structp);
+/*
+ * Parse a noop request.  Note that to get here, the lwpacket must have
+ * already been parsed and removed by the caller, otherwise it would be
+ * pretty hard for it to know this is the right function to call.
+ *
+ * The function verifies bits of the header, but does not modify it.
+ */
+
+lwres_result_t
+lwres_noopresponse_parse(lwres_context_t *ctx, lwres_buffer_t *b,
+			 lwres_lwpacket_t *pkt,
+			 lwres_noopresponse_t **structp);
+
+void
+lwres_nooprequest_free(lwres_context_t *ctx, lwres_nooprequest_t **structp);
+
+void
+lwres_noopresponse_free(lwres_context_t *ctx, lwres_noopresponse_t **structp);
+
+/*
+ * Frees any dynamically allocated memory for this structure.
+ *
+ * Requires:
+ *
+ *	ctx != NULL, and be a context returned via lwres_contextcreate().
+ *
+ *	structp != NULL && *structp != NULL.
+ *
+ * Ensures:
+ *
+ *	*structp == NULL.
+ *
+ *	All memory allocated by this structure will be returned to the
+ *	system via the context's free function.
+ */
+
+lwres_result_t
+lwres_conf_parse(lwres_context_t *ctx, const char *filename);
+/*
+ * parses a resolv.conf-format file and stores the results in the structure
+ * pointed to by *ctx.
+ *
+ * Requires:
+ *	ctx != NULL
+ *	filename != NULL && strlen(filename) > 0
+ *
+ * Returns:
+ *	LWRES_R_SUCCESS on a successful parse.
+ *	Anything else on error, although the structure may be partially filled
+ *	in.
+ */
+
+lwres_result_t
+lwres_conf_print(lwres_context_t *ctx, FILE *fp);
+/*
+ * Prints a resolv.conf-format of confdata output to fp.
+ *
+ * Requires:
+ *	ctx != NULL
+ */
+
+void
+lwres_conf_init(lwres_context_t *ctx);
+/*
+ * sets all internal fields to a default state. Used to initialize a new
+ * lwres_conf_t structure (not reset a used on).
+ *
+ * Requires:
+ *	ctx != NULL
+ */
+
+void
+lwres_conf_clear(lwres_context_t *ctx);
+/*
+ * frees all internally allocated memory in confdata. Uses the memory
+ * routines supplied by ctx.
+ *
+ * Requires:
+ *	ctx != NULL
+ */
+
+lwres_conf_t *
+lwres_conf_get(lwres_context_t *ctx);
+/*
+ * returns a pointer to the current config structure.
+ * Be extremely cautions in modifying the contents of this structure; it
+ * needs an API to return the various bits of data, walk lists, etc.
+ *
+ * Requires:
+ *	ctx != NULL
+ */
+
+/*
+ * Helper functions
+ */
+
+lwres_result_t
+lwres_data_parse(lwres_buffer_t *b, unsigned char **p, lwres_uint16_t *len);
+
+lwres_result_t
+lwres_string_parse(lwres_buffer_t *b, char **c, lwres_uint16_t *len);
+
+lwres_result_t
+lwres_addr_parse(lwres_buffer_t *b, lwres_addr_t *addr);
+
+lwres_result_t
+lwres_getaddrsbyname(lwres_context_t *ctx, const char *name,
+		     lwres_uint32_t addrtypes, lwres_gabnresponse_t **structp);
+
+lwres_result_t
+lwres_getnamebyaddr(lwres_context_t *ctx, lwres_uint32_t addrtype,
+		    lwres_uint16_t addrlen, const unsigned char *addr,
+		    lwres_gnbaresponse_t **structp);
+
+lwres_result_t
+lwres_getrdatabyname(lwres_context_t *ctx, const char *name,
+		     lwres_uint16_t rdclass, lwres_uint16_t rdtype,
+		     lwres_uint32_t flags, lwres_grbnresponse_t **structp);
+
+lwres_result_t
+lwres_getaddrsbyname_setup(lwres_context_t *ctx, const char *name,
+		     lwres_uint32_t addrtypes, lwres_gabnresponse_t **structp);
+
+
+
+LWRES_LANG_ENDDECLS
+
+#endif /* LWRES_LWRES_H */
diff --git a/lib/liblwres/include/lwres/netdb.h b/lib/liblwres/include/lwres/netdb.h
new file mode 100644
index 000000000..2391d31fb
--- /dev/null
+++ b/lib/liblwres/include/lwres/netdb.h
@@ -0,0 +1,522 @@
+/*
+ * Copyright (C) 2000, 2001  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+ * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
+ * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: netdb.h,v 1.1 2004/03/15 20:35:25 as Exp $ */
+
+#ifndef LWRES_NETDB_H
+#define LWRES_NETDB_H 1
+
+#include <stddef.h>	/* Required on FreeBSD (and  others?) for size_t. */
+#include <netdb.h>	/* Contractual provision. */
+
+#include <lwres/lang.h>
+
+/*
+ * Define if <netdb.h> does not declare struct addrinfo.
+ */
+#undef ISC_LWRES_NEEDADDRINFO 
+
+#ifdef ISC_LWRES_NEEDADDRINFO
+struct addrinfo {
+	int		ai_flags;      /* AI_PASSIVE, AI_CANONNAME */
+	int		ai_family;     /* PF_xxx */
+	int		ai_socktype;   /* SOCK_xxx */
+	int		ai_protocol;   /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
+	size_t		ai_addrlen;    /* Length of ai_addr */
+	char		*ai_canonname; /* Canonical name for hostname */
+	struct sockaddr	*ai_addr;      /* Binary address */
+	struct addrinfo	*ai_next;      /* Next structure in linked list */
+};
+#endif
+
+/*
+ * Undefine all #defines we are interested in as <netdb.h> may or may not have
+ * defined them.
+ */
+
+/*
+ * Error return codes from gethostbyname() and gethostbyaddr()
+ * (left in extern int h_errno).
+ */
+
+#undef	NETDB_INTERNAL
+#undef	NETDB_SUCCESS
+#undef	HOST_NOT_FOUND
+#undef	TRY_AGAIN
+#undef	NO_RECOVERY
+#undef	NO_DATA
+#undef	NO_ADDRESS
+
+#define	NETDB_INTERNAL	-1	/* see errno */
+#define	NETDB_SUCCESS	0	/* no problem */
+#define	HOST_NOT_FOUND	1 /* Authoritative Answer Host not found */
+#define	TRY_AGAIN	2 /* Non-Authoritive Host not found, or SERVERFAIL */
+#define	NO_RECOVERY	3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
+#define	NO_DATA		4 /* Valid name, no data record of requested type */
+#define	NO_ADDRESS	NO_DATA		/* no address, look for MX record */
+
+/*
+ * Error return codes from getaddrinfo()
+ */
+
+#undef	EAI_ADDRFAMILY
+#undef	EAI_AGAIN
+#undef	EAI_BADFLAGS
+#undef	EAI_FAIL
+#undef	EAI_FAMILY
+#undef	EAI_MEMORY
+#undef	EAI_NODATA
+#undef	EAI_NONAME
+#undef	EAI_SERVICE
+#undef	EAI_SOCKTYPE
+#undef	EAI_SYSTEM
+#undef	EAI_BADHINTS
+#undef	EAI_PROTOCOL
+#undef	EAI_MAX
+
+#define	EAI_ADDRFAMILY	 1	/* address family for hostname not supported */
+#define	EAI_AGAIN	 2	/* temporary failure in name resolution */
+#define	EAI_BADFLAGS	 3	/* invalid value for ai_flags */
+#define	EAI_FAIL	 4	/* non-recoverable failure in name resolution */
+#define	EAI_FAMILY	 5	/* ai_family not supported */
+#define	EAI_MEMORY	 6	/* memory allocation failure */
+#define	EAI_NODATA	 7	/* no address associated with hostname */
+#define	EAI_NONAME	 8	/* hostname nor servname provided, or not known */
+#define	EAI_SERVICE	 9	/* servname not supported for ai_socktype */
+#define	EAI_SOCKTYPE	10	/* ai_socktype not supported */
+#define	EAI_SYSTEM	11	/* system error returned in errno */
+#define EAI_BADHINTS	12
+#define EAI_PROTOCOL	13
+#define EAI_MAX		14
+
+/*
+ * Flag values for getaddrinfo()
+ */
+#undef	AI_PASSIVE
+#undef	AI_CANONNAME
+#undef	AI_NUMERICHOST
+
+#define	AI_PASSIVE	0x00000001
+#define	AI_CANONNAME	0x00000002
+#define AI_NUMERICHOST	0x00000004
+
+/*
+ * Flag values for getipnodebyname()
+ */
+#undef AI_V4MAPPED
+#undef AI_ALL
+#undef AI_ADDRCONFIG
+#undef AI_DEFAULT
+
+#define AI_V4MAPPED	0x00000008
+#define AI_ALL		0x00000010
+#define AI_ADDRCONFIG	0x00000020
+#define AI_DEFAULT	(AI_V4MAPPED|AI_ADDRCONFIG)
+
+/*
+ * Constants for lwres_getnameinfo()
+ */
+#undef	NI_MAXHOST
+#undef	NI_MAXSERV
+
+#define	NI_MAXHOST	1025
+#define	NI_MAXSERV	32
+
+/*
+ * Flag values for lwres_getnameinfo()
+ */
+#undef	NI_NOFQDN
+#undef	NI_NUMERICHOST
+#undef	NI_NAMEREQD
+#undef	NI_NUMERICSERV
+#undef	NI_DGRAM
+#undef	NI_NUMERICSCOPE
+
+#define	NI_NOFQDN	0x00000001
+#define	NI_NUMERICHOST	0x00000002
+#define	NI_NAMEREQD	0x00000004
+#define	NI_NUMERICSERV	0x00000008
+#define	NI_DGRAM	0x00000010
+#define	NI_NUMERICSCOPE	0x00000020	/*2553bis-00*/
+
+/*
+ * Define if <netdb.h> does not declare struct rrsetinfo.
+ */
+#define ISC_LWRES_NEEDRRSETINFO 1
+
+#ifdef ISC_LWRES_NEEDRRSETINFO
+/*
+ * Structures for getrrsetbyname()
+ */
+struct rdatainfo {
+	unsigned int		rdi_length;
+	unsigned char		*rdi_data;
+};
+
+struct rrsetinfo {
+	unsigned int		rri_flags;
+	int			rri_rdclass;
+	int			rri_rdtype;
+	unsigned int		rri_ttl;
+	unsigned int		rri_nrdatas;
+	unsigned int		rri_nsigs;
+	char			*rri_name;
+	struct rdatainfo	*rri_rdatas;
+	struct rdatainfo	*rri_sigs;
+};
+
+/*
+ * Flags for getrrsetbyname()
+ */
+#define RRSET_VALIDATED		0x00000001
+	/* Set was dnssec validated */
+
+/*
+ * Return codes for getrrsetbyname()
+ */
+#define ERRSET_SUCCESS		0
+#define ERRSET_NOMEMORY		1
+#define ERRSET_FAIL		2
+#define ERRSET_INVAL		3
+#define	ERRSET_NONAME	 	4
+#define	ERRSET_NODATA	 	5
+#define ERRSET_RETRY            6
+#endif
+
+/*
+ * Define to map into lwres_ namespace.
+ */
+
+#define LWRES_NAMESPACE
+
+#ifdef LWRES_NAMESPACE
+
+/*
+ * Use our versions not the ones from the C library.
+ */
+
+#ifdef getnameinfo
+#undef getnameinfo
+#endif
+#define getnameinfo lwres_getnameinfo
+
+#ifdef getaddrinfo
+#undef getaddrinfo
+#endif
+#define getaddrinfo lwres_getaddrinfo
+
+#ifdef freeaddrinfo
+#undef freeaddrinfo
+#endif
+#define freeaddrinfo lwres_freeaddrinfo
+
+#ifdef gai_strerror
+#undef gai_strerror
+#endif
+#define gai_strerror lwres_gai_strerror
+
+#ifdef herror
+#undef herror
+#endif
+#define herror lwres_herror
+
+#ifdef hstrerror
+#undef hstrerror
+#endif
+#define hstrerror lwres_hstrerror
+
+#ifdef getipnodebyname
+#undef getipnodebyname
+#endif
+#define getipnodebyname lwres_getipnodebyname
+
+#ifdef getipnodebyaddr
+#undef getipnodebyaddr
+#endif
+#define getipnodebyaddr lwres_getipnodebyaddr
+
+#ifdef freehostent
+#undef freehostent
+#endif
+#define freehostent lwres_freehostent
+
+#ifdef gethostbyname
+#undef gethostbyname
+#endif
+#define gethostbyname lwres_gethostbyname
+
+#ifdef gethostbyname2
+#undef gethostbyname2
+#endif
+#define gethostbyname2 lwres_gethostbyname2
+
+#ifdef gethostbyaddr
+#undef gethostbyaddr
+#endif
+#define gethostbyaddr lwres_gethostbyaddr
+
+#ifdef gethostent
+#undef gethostent
+#endif
+#define gethostent lwres_gethostent
+
+#ifdef sethostent
+#undef sethostent
+#endif
+#define sethostent lwres_sethostent
+
+#ifdef endhostent
+#undef endhostent
+#endif
+#define endhostent lwres_endhostent
+
+/* #define sethostfile lwres_sethostfile */
+
+#ifdef gethostbyname_r
+#undef gethostbyname_r
+#endif
+#define gethostbyname_r lwres_gethostbyname_r
+
+#ifdef gethostbyaddr_r
+#undef gethostbyaddr_r
+#endif
+#define gethostbyaddr_r lwres_gethostbyaddr_r
+
+#ifdef gethostent_r
+#undef gethostent_r
+#endif
+#define gethostent_r lwres_gethostent_r
+
+#ifdef sethostent_r
+#undef sethostent_r
+#endif
+#define sethostent_r lwres_sethostent_r
+
+#ifdef endhostent_r
+#undef endhostent_r
+#endif
+#define endhostent_r lwres_endhostent_r
+
+#ifdef getrrsetbyname
+#undef getrrsetbyname
+#endif
+#define getrrsetbyname lwres_getrrsetbyname
+
+#ifdef freerrset
+#undef freerrset
+#endif
+#define freerrset lwres_freerrset
+
+#ifdef notyet
+#define getservbyname lwres_getservbyname
+#define getservbyport lwres_getservbyport
+#define getservent lwres_getservent
+#define setservent lwres_setservent
+#define endservent lwres_endservent
+
+#define getservbyname_r lwres_getservbyname_r
+#define getservbyport_r lwres_getservbyport_r
+#define getservent_r lwres_getservent_r
+#define setservent_r lwres_setservent_r
+#define endservent_r lwres_endservent_r
+
+#define getprotobyname lwres_getprotobyname
+#define getprotobynumber lwres_getprotobynumber
+#define getprotoent lwres_getprotoent
+#define setprotoent lwres_setprotoent
+#define endprotoent lwres_endprotoent
+
+#define getprotobyname_r lwres_getprotobyname_r
+#define getprotobynumber_r lwres_getprotobynumber_r
+#define getprotoent_r lwres_getprotoent_r
+#define setprotoent_r lwres_setprotoent_r
+#define endprotoent_r lwres_endprotoent_r
+
+#ifdef getnetbyname
+#undef getnetbyname
+#endif
+#define getnetbyname lwres_getnetbyname
+
+#ifdef getnetbyaddr
+#undef getnetbyaddr
+#endif
+#define getnetbyaddr lwres_getnetbyaddr
+
+#ifdef getnetent
+#undef getnetent
+#endif
+#define getnetent lwres_getnetent
+
+#ifdef setnetent
+#undef setnetent
+#endif
+#define setnetent lwres_setnetent
+
+#ifdef endnetent
+#undef endnetent
+#endif
+#define endnetent lwres_endnetent
+
+
+#ifdef getnetbyname_r
+#undef getnetbyname_r
+#endif
+#define getnetbyname_r lwres_getnetbyname_r
+
+#ifdef getnetbyaddr_r
+#undef getnetbyaddr_r
+#endif
+#define getnetbyaddr_r lwres_getnetbyaddr_r
+
+#ifdef getnetent_r
+#undef getnetent_r
+#endif
+#define getnetent_r lwres_getnetent_r
+
+#ifdef setnetent_r
+#undef setnetent_r
+#endif
+#define setnetent_r lwres_setnetent_r
+
+#ifdef endnetent_r
+#undef endnetent_r
+#endif
+#define endnetent_r lwres_endnetent_r
+#endif	/* notyet */
+
+#ifdef h_errno
+#undef h_errno
+#endif
+#define h_errno lwres_h_errno
+
+#endif	/* LWRES_NAMESPACE */
+
+LWRES_LANG_BEGINDECLS
+
+extern int lwres_h_errno;
+
+int		lwres_getaddrinfo(const char *, const char *,
+				 const struct addrinfo *, struct addrinfo **);
+int		lwres_getnameinfo(const struct sockaddr *, size_t, char *,
+				 size_t, char *, size_t, int);
+void		lwres_freeaddrinfo(struct addrinfo *);
+char		*lwres_gai_strerror(int);
+
+struct hostent	*lwres_gethostbyaddr(const char *, int, int);
+struct hostent	*lwres_gethostbyname(const char *);
+struct hostent	*lwres_gethostbyname2(const char *, int);
+struct hostent	*lwres_gethostent(void);
+struct hostent	*lwres_getipnodebyname(const char *, int, int, int *);
+struct hostent	*lwres_getipnodebyaddr(const void *, size_t, int, int *);
+void		lwres_endhostent(void);
+void		lwres_sethostent(int);
+/* void		lwres_sethostfile(const char *); */
+void		lwres_freehostent(struct hostent *);
+
+int		lwres_getrrsetbyname(const char *, unsigned int, unsigned int,
+				     unsigned int, struct rrsetinfo **);
+int		lwres_getrrsetbyname_all(const char *, unsigned int,
+					 unsigned int,
+				     unsigned int, struct rrsetinfo **);
+void		lwres_freerrset(struct rrsetinfo *);
+
+#ifdef notyet
+struct netent	*lwres_getnetbyaddr(unsigned long, int);
+struct netent	*lwres_getnetbyname(const char *);
+struct netent	*lwres_getnetent(void);
+void		lwres_endnetent(void);
+void		lwres_setnetent(int);
+
+struct protoent	*lwres_getprotobyname(const char *);
+struct protoent	*lwres_getprotobynumber(int);
+struct protoent	*lwres_getprotoent(void);
+void		lwres_endprotoent(void);
+void		lwres_setprotoent(int);
+
+struct servent	*lwres_getservbyname(const char *, const char *);
+struct servent	*lwres_getservbyport(int, const char *);
+struct servent	*lwres_getservent(void);
+void		lwres_endservent(void);
+void		lwres_setservent(int);
+#endif /* notyet */
+
+void		lwres_herror(const char *);
+const char	*lwres_hstrerror(int);
+
+
+struct hostent	*lwres_gethostbyaddr_r(const char *, int, int, struct hostent *,
+					char *, int, int *);
+struct hostent	*lwres_gethostbyname_r(const char *, struct hostent *,
+					char *, int, int *);
+struct hostent	*lwres_gethostent_r(struct hostent *, char *, int, int *);
+void		lwres_sethostent_r(int);
+void		lwres_endhostent_r(void);
+
+#ifdef notyet
+struct netent	*lwres_getnetbyname_r(const char *, struct netent *,
+					char *, int);
+struct netent	*lwres_getnetbyaddr_r(long, int, struct netent *,
+					char *, int);
+struct netent	*lwres_getnetent_r(struct netent *, char *, int);
+void		lwres_setnetent_r(int);
+void		lwres_endnetent_r(void);
+
+struct protoent	*lwres_getprotobyname_r(const char *,
+				struct protoent *, char *, int);
+struct protoent	*lwres_getprotobynumber_r(int,
+				struct protoent *, char *, int);
+struct protoent	*lwres_getprotoent_r(struct protoent *, char *, int);
+void		lwres_setprotoent_r(int);
+void		lwres_endprotoent_r(void);
+
+struct servent	*lwres_getservbyname_r(const char *name, const char *,
+					struct servent *, char *, int);
+struct servent	*lwres_getservbyport_r(int port, const char *,
+					struct servent *, char *, int);
+struct servent	*lwres_getservent_r(struct servent *, char *, int);
+void		lwres_setservent_r(int);
+void		lwres_endservent_r(void);
+#endif	/* notyet */
+
+LWRES_LANG_ENDDECLS
+
+#ifdef notyet
+/* This is nec'y to make this include file properly replace the sun version. */
+#ifdef sun
+#ifdef __GNU_LIBRARY__
+#include <rpc/netdb.h>		/* Required. */
+#else /* !__GNU_LIBRARY__ */
+struct rpcent {
+	char	*r_name;	/* name of server for this rpc program */
+	char	**r_aliases;	/* alias list */
+	int	r_number;	/* rpc program number */
+};
+struct rpcent	*lwres_getrpcbyname();
+struct rpcent	*lwres_getrpcbynumber(),
+struct rpcent	*lwres_getrpcent();
+#endif /* __GNU_LIBRARY__ */
+#endif /* sun */
+#endif /* notyet */
+
+/*
+ * Tell Emacs to use C mode on this file.
+ * Local variables:
+ * mode: c
+ * End:
+ */
+
+#endif /* LWRES_NETDB_H */
diff --git a/lib/liblwres/include/lwres/netdb.h.in b/lib/liblwres/include/lwres/netdb.h.in
new file mode 100644
index 000000000..75446e8f8
--- /dev/null
+++ b/lib/liblwres/include/lwres/netdb.h.in
@@ -0,0 +1,518 @@
+/*
+ * Copyright (C) 2000, 2001  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+ * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
+ * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: netdb.h.in,v 1.1 2004/03/15 20:35:25 as Exp $ */
+
+#ifndef LWRES_NETDB_H
+#define LWRES_NETDB_H 1
+
+#include <stddef.h>	/* Required on FreeBSD (and  others?) for size_t. */
+#include <netdb.h>	/* Contractual provision. */
+
+#include <lwres/lang.h>
+
+/*
+ * Define if <netdb.h> does not declare struct addrinfo.
+ */
+@ISC_LWRES_NEEDADDRINFO@
+
+#ifdef ISC_LWRES_NEEDADDRINFO
+struct addrinfo {
+	int		ai_flags;      /* AI_PASSIVE, AI_CANONNAME */
+	int		ai_family;     /* PF_xxx */
+	int		ai_socktype;   /* SOCK_xxx */
+	int		ai_protocol;   /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
+	size_t		ai_addrlen;    /* Length of ai_addr */
+	char		*ai_canonname; /* Canonical name for hostname */
+	struct sockaddr	*ai_addr;      /* Binary address */
+	struct addrinfo	*ai_next;      /* Next structure in linked list */
+};
+#endif
+
+/*
+ * Undefine all #defines we are interested in as <netdb.h> may or may not have
+ * defined them.
+ */
+
+/*
+ * Error return codes from gethostbyname() and gethostbyaddr()
+ * (left in extern int h_errno).
+ */
+
+#undef	NETDB_INTERNAL
+#undef	NETDB_SUCCESS
+#undef	HOST_NOT_FOUND
+#undef	TRY_AGAIN
+#undef	NO_RECOVERY
+#undef	NO_DATA
+#undef	NO_ADDRESS
+
+#define	NETDB_INTERNAL	-1	/* see errno */
+#define	NETDB_SUCCESS	0	/* no problem */
+#define	HOST_NOT_FOUND	1 /* Authoritative Answer Host not found */
+#define	TRY_AGAIN	2 /* Non-Authoritive Host not found, or SERVERFAIL */
+#define	NO_RECOVERY	3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
+#define	NO_DATA		4 /* Valid name, no data record of requested type */
+#define	NO_ADDRESS	NO_DATA		/* no address, look for MX record */
+
+/*
+ * Error return codes from getaddrinfo()
+ */
+
+#undef	EAI_ADDRFAMILY
+#undef	EAI_AGAIN
+#undef	EAI_BADFLAGS
+#undef	EAI_FAIL
+#undef	EAI_FAMILY
+#undef	EAI_MEMORY
+#undef	EAI_NODATA
+#undef	EAI_NONAME
+#undef	EAI_SERVICE
+#undef	EAI_SOCKTYPE
+#undef	EAI_SYSTEM
+#undef	EAI_BADHINTS
+#undef	EAI_PROTOCOL
+#undef	EAI_MAX
+
+#define	EAI_ADDRFAMILY	 1	/* address family for hostname not supported */
+#define	EAI_AGAIN	 2	/* temporary failure in name resolution */
+#define	EAI_BADFLAGS	 3	/* invalid value for ai_flags */
+#define	EAI_FAIL	 4	/* non-recoverable failure in name resolution */
+#define	EAI_FAMILY	 5	/* ai_family not supported */
+#define	EAI_MEMORY	 6	/* memory allocation failure */
+#define	EAI_NODATA	 7	/* no address associated with hostname */
+#define	EAI_NONAME	 8	/* hostname nor servname provided, or not known */
+#define	EAI_SERVICE	 9	/* servname not supported for ai_socktype */
+#define	EAI_SOCKTYPE	10	/* ai_socktype not supported */
+#define	EAI_SYSTEM	11	/* system error returned in errno */
+#define EAI_BADHINTS	12
+#define EAI_PROTOCOL	13
+#define EAI_MAX		14
+
+/*
+ * Flag values for getaddrinfo()
+ */
+#undef	AI_PASSIVE
+#undef	AI_CANONNAME
+#undef	AI_NUMERICHOST
+
+#define	AI_PASSIVE	0x00000001
+#define	AI_CANONNAME	0x00000002
+#define AI_NUMERICHOST	0x00000004
+
+/*
+ * Flag values for getipnodebyname()
+ */
+#undef AI_V4MAPPED
+#undef AI_ALL
+#undef AI_ADDRCONFIG
+#undef AI_DEFAULT
+
+#define AI_V4MAPPED	0x00000008
+#define AI_ALL		0x00000010
+#define AI_ADDRCONFIG	0x00000020
+#define AI_DEFAULT	(AI_V4MAPPED|AI_ADDRCONFIG)
+
+/*
+ * Constants for lwres_getnameinfo()
+ */
+#undef	NI_MAXHOST
+#undef	NI_MAXSERV
+
+#define	NI_MAXHOST	1025
+#define	NI_MAXSERV	32
+
+/*
+ * Flag values for lwres_getnameinfo()
+ */
+#undef	NI_NOFQDN
+#undef	NI_NUMERICHOST
+#undef	NI_NAMEREQD
+#undef	NI_NUMERICSERV
+#undef	NI_DGRAM
+#undef	NI_NUMERICSCOPE
+
+#define	NI_NOFQDN	0x00000001
+#define	NI_NUMERICHOST	0x00000002
+#define	NI_NAMEREQD	0x00000004
+#define	NI_NUMERICSERV	0x00000008
+#define	NI_DGRAM	0x00000010
+#define	NI_NUMERICSCOPE	0x00000020	/*2553bis-00*/
+
+/*
+ * Define if <netdb.h> does not declare struct rrsetinfo.
+ */
+@ISC_LWRES_NEEDRRSETINFO@
+
+#ifdef ISC_LWRES_NEEDRRSETINFO
+/*
+ * Structures for getrrsetbyname()
+ */
+struct rdatainfo {
+	unsigned int		rdi_length;
+	unsigned char		*rdi_data;
+};
+
+struct rrsetinfo {
+	unsigned int		rri_flags;
+	int			rri_rdclass;
+	int			rri_rdtype;
+	unsigned int		rri_ttl;
+	unsigned int		rri_nrdatas;
+	unsigned int		rri_nsigs;
+	char			*rri_name;
+	struct rdatainfo	*rri_rdatas;
+	struct rdatainfo	*rri_sigs;
+};
+
+/*
+ * Flags for getrrsetbyname()
+ */
+#define RRSET_VALIDATED		0x00000001
+	/* Set was dnssec validated */
+
+/*
+ * Return codes for getrrsetbyname()
+ */
+#define ERRSET_SUCCESS		0
+#define ERRSET_NOMEMORY		1
+#define ERRSET_FAIL		2
+#define ERRSET_INVAL		3
+#define	ERRSET_NONAME	 	4
+#define	ERRSET_NODATA	 	5
+#endif
+
+/*
+ * Define to map into lwres_ namespace.
+ */
+
+#define LWRES_NAMESPACE
+
+#ifdef LWRES_NAMESPACE
+
+/*
+ * Use our versions not the ones from the C library.
+ */
+
+#ifdef getnameinfo
+#undef getnameinfo
+#endif
+#define getnameinfo lwres_getnameinfo
+
+#ifdef getaddrinfo
+#undef getaddrinfo
+#endif
+#define getaddrinfo lwres_getaddrinfo
+
+#ifdef freeaddrinfo
+#undef freeaddrinfo
+#endif
+#define freeaddrinfo lwres_freeaddrinfo
+
+#ifdef gai_strerror
+#undef gai_strerror
+#endif
+#define gai_strerror lwres_gai_strerror
+
+#ifdef herror
+#undef herror
+#endif
+#define herror lwres_herror
+
+#ifdef hstrerror
+#undef hstrerror
+#endif
+#define hstrerror lwres_hstrerror
+
+#ifdef getipnodebyname
+#undef getipnodebyname
+#endif
+#define getipnodebyname lwres_getipnodebyname
+
+#ifdef getipnodebyaddr
+#undef getipnodebyaddr
+#endif
+#define getipnodebyaddr lwres_getipnodebyaddr
+
+#ifdef freehostent
+#undef freehostent
+#endif
+#define freehostent lwres_freehostent
+
+#ifdef gethostbyname
+#undef gethostbyname
+#endif
+#define gethostbyname lwres_gethostbyname
+
+#ifdef gethostbyname2
+#undef gethostbyname2
+#endif
+#define gethostbyname2 lwres_gethostbyname2
+
+#ifdef gethostbyaddr
+#undef gethostbyaddr
+#endif
+#define gethostbyaddr lwres_gethostbyaddr
+
+#ifdef gethostent
+#undef gethostent
+#endif
+#define gethostent lwres_gethostent
+
+#ifdef sethostent
+#undef sethostent
+#endif
+#define sethostent lwres_sethostent
+
+#ifdef endhostent
+#undef endhostent
+#endif
+#define endhostent lwres_endhostent
+
+/* #define sethostfile lwres_sethostfile */
+
+#ifdef gethostbyname_r
+#undef gethostbyname_r
+#endif
+#define gethostbyname_r lwres_gethostbyname_r
+
+#ifdef gethostbyaddr_r
+#undef gethostbyaddr_r
+#endif
+#define gethostbyaddr_r lwres_gethostbyaddr_r
+
+#ifdef gethostent_r
+#undef gethostent_r
+#endif
+#define gethostent_r lwres_gethostent_r
+
+#ifdef sethostent_r
+#undef sethostent_r
+#endif
+#define sethostent_r lwres_sethostent_r
+
+#ifdef endhostent_r
+#undef endhostent_r
+#endif
+#define endhostent_r lwres_endhostent_r
+
+#ifdef getrrsetbyname
+#undef getrrsetbyname
+#endif
+#define getrrsetbyname lwres_getrrsetbyname
+
+#ifdef freerrset
+#undef freerrset
+#endif
+#define freerrset lwres_freerrset
+
+#ifdef notyet
+#define getservbyname lwres_getservbyname
+#define getservbyport lwres_getservbyport
+#define getservent lwres_getservent
+#define setservent lwres_setservent
+#define endservent lwres_endservent
+
+#define getservbyname_r lwres_getservbyname_r
+#define getservbyport_r lwres_getservbyport_r
+#define getservent_r lwres_getservent_r
+#define setservent_r lwres_setservent_r
+#define endservent_r lwres_endservent_r
+
+#define getprotobyname lwres_getprotobyname
+#define getprotobynumber lwres_getprotobynumber
+#define getprotoent lwres_getprotoent
+#define setprotoent lwres_setprotoent
+#define endprotoent lwres_endprotoent
+
+#define getprotobyname_r lwres_getprotobyname_r
+#define getprotobynumber_r lwres_getprotobynumber_r
+#define getprotoent_r lwres_getprotoent_r
+#define setprotoent_r lwres_setprotoent_r
+#define endprotoent_r lwres_endprotoent_r
+
+#ifdef getnetbyname
+#undef getnetbyname
+#endif
+#define getnetbyname lwres_getnetbyname
+
+#ifdef getnetbyaddr
+#undef getnetbyaddr
+#endif
+#define getnetbyaddr lwres_getnetbyaddr
+
+#ifdef getnetent
+#undef getnetent
+#endif
+#define getnetent lwres_getnetent
+
+#ifdef setnetent
+#undef setnetent
+#endif
+#define setnetent lwres_setnetent
+
+#ifdef endnetent
+#undef endnetent
+#endif
+#define endnetent lwres_endnetent
+
+
+#ifdef getnetbyname_r
+#undef getnetbyname_r
+#endif
+#define getnetbyname_r lwres_getnetbyname_r
+
+#ifdef getnetbyaddr_r
+#undef getnetbyaddr_r
+#endif
+#define getnetbyaddr_r lwres_getnetbyaddr_r
+
+#ifdef getnetent_r
+#undef getnetent_r
+#endif
+#define getnetent_r lwres_getnetent_r
+
+#ifdef setnetent_r
+#undef setnetent_r
+#endif
+#define setnetent_r lwres_setnetent_r
+
+#ifdef endnetent_r
+#undef endnetent_r
+#endif
+#define endnetent_r lwres_endnetent_r
+#endif	/* notyet */
+
+#ifdef h_errno
+#undef h_errno
+#endif
+#define h_errno lwres_h_errno
+
+#endif	/* LWRES_NAMESPACE */
+
+LWRES_LANG_BEGINDECLS
+
+extern int lwres_h_errno;
+
+int		lwres_getaddrinfo(const char *, const char *,
+				 const struct addrinfo *, struct addrinfo **);
+int		lwres_getnameinfo(const struct sockaddr *, size_t, char *,
+				 size_t, char *, size_t, int);
+void		lwres_freeaddrinfo(struct addrinfo *);
+char		*lwres_gai_strerror(int);
+
+struct hostent	*lwres_gethostbyaddr(const char *, int, int);
+struct hostent	*lwres_gethostbyname(const char *);
+struct hostent	*lwres_gethostbyname2(const char *, int);
+struct hostent	*lwres_gethostent(void);
+struct hostent	*lwres_getipnodebyname(const char *, int, int, int *);
+struct hostent	*lwres_getipnodebyaddr(const void *, size_t, int, int *);
+void		lwres_endhostent(void);
+void		lwres_sethostent(int);
+/* void		lwres_sethostfile(const char *); */
+void		lwres_freehostent(struct hostent *);
+
+int		lwres_getrrsetbyname(const char *, unsigned int, unsigned int,
+				     unsigned int, struct rrsetinfo **);
+void		lwres_freerrset(struct rrsetinfo *);
+
+#ifdef notyet
+struct netent	*lwres_getnetbyaddr(unsigned long, int);
+struct netent	*lwres_getnetbyname(const char *);
+struct netent	*lwres_getnetent(void);
+void		lwres_endnetent(void);
+void		lwres_setnetent(int);
+
+struct protoent	*lwres_getprotobyname(const char *);
+struct protoent	*lwres_getprotobynumber(int);
+struct protoent	*lwres_getprotoent(void);
+void		lwres_endprotoent(void);
+void		lwres_setprotoent(int);
+
+struct servent	*lwres_getservbyname(const char *, const char *);
+struct servent	*lwres_getservbyport(int, const char *);
+struct servent	*lwres_getservent(void);
+void		lwres_endservent(void);
+void		lwres_setservent(int);
+#endif /* notyet */
+
+void		lwres_herror(const char *);
+const char	*lwres_hstrerror(int);
+
+
+struct hostent	*lwres_gethostbyaddr_r(const char *, int, int, struct hostent *,
+					char *, int, int *);
+struct hostent	*lwres_gethostbyname_r(const char *, struct hostent *,
+					char *, int, int *);
+struct hostent	*lwres_gethostent_r(struct hostent *, char *, int, int *);
+void		lwres_sethostent_r(int);
+void		lwres_endhostent_r(void);
+
+#ifdef notyet
+struct netent	*lwres_getnetbyname_r(const char *, struct netent *,
+					char *, int);
+struct netent	*lwres_getnetbyaddr_r(long, int, struct netent *,
+					char *, int);
+struct netent	*lwres_getnetent_r(struct netent *, char *, int);
+void		lwres_setnetent_r(int);
+void		lwres_endnetent_r(void);
+
+struct protoent	*lwres_getprotobyname_r(const char *,
+				struct protoent *, char *, int);
+struct protoent	*lwres_getprotobynumber_r(int,
+				struct protoent *, char *, int);
+struct protoent	*lwres_getprotoent_r(struct protoent *, char *, int);
+void		lwres_setprotoent_r(int);
+void		lwres_endprotoent_r(void);
+
+struct servent	*lwres_getservbyname_r(const char *name, const char *,
+					struct servent *, char *, int);
+struct servent	*lwres_getservbyport_r(int port, const char *,
+					struct servent *, char *, int);
+struct servent	*lwres_getservent_r(struct servent *, char *, int);
+void		lwres_setservent_r(int);
+void		lwres_endservent_r(void);
+#endif	/* notyet */
+
+LWRES_LANG_ENDDECLS
+
+#ifdef notyet
+/* This is nec'y to make this include file properly replace the sun version. */
+#ifdef sun
+#ifdef __GNU_LIBRARY__
+#include <rpc/netdb.h>		/* Required. */
+#else /* !__GNU_LIBRARY__ */
+struct rpcent {
+	char	*r_name;	/* name of server for this rpc program */
+	char	**r_aliases;	/* alias list */
+	int	r_number;	/* rpc program number */
+};
+struct rpcent	*lwres_getrpcbyname();
+struct rpcent	*lwres_getrpcbynumber(),
+struct rpcent	*lwres_getrpcent();
+#endif /* __GNU_LIBRARY__ */
+#endif /* sun */
+#endif /* notyet */
+
+/*
+ * Tell Emacs to use C mode on this file.
+ * Local variables:
+ * mode: c
+ * End:
+ */
+
+#endif /* LWRES_NETDB_H */
diff --git a/lib/liblwres/include/lwres/platform.h b/lib/liblwres/include/lwres/platform.h
new file mode 100644
index 000000000..af4c615d9
--- /dev/null
+++ b/lib/liblwres/include/lwres/platform.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2000, 2001  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+ * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
+ * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: platform.h,v 1.1 2004/03/15 20:35:25 as Exp $ */
+
+#ifndef LWRES_PLATFORM_H
+#define LWRES_PLATFORM_H 1
+
+/*****
+ ***** Platform-dependent defines.
+ *****/
+
+/***
+ *** Network.
+ ***/
+
+/*
+ * Define if this system needs the <netinet/in6.h> header file for IPv6.
+ */
+#undef LWRES_PLATFORM_NEEDNETINETIN6H
+
+/*
+ * Define if this system needs the <netinet6/in6.h> header file for IPv6.
+ */
+#undef LWRES_PLATFORM_NEEDNETINET6IN6H
+
+/*
+ * If sockaddrs on this system have an sa_len field, LWRES_PLATFORM_HAVESALEN
+ * will be defined.
+ */
+#undef LWRES_PLATFORM_HAVESALEN
+
+/*
+ * If this system has the IPv6 structure definitions, LWRES_PLATFORM_HAVEIPV6
+ * will be defined.
+ */
+#define LWRES_PLATFORM_HAVEIPV6 1
+
+/*
+ * If this system is missing in6addr_any, LWRES_PLATFORM_NEEDIN6ADDRANY will
+ * be defined.
+ */
+#undef LWRES_PLATFORM_NEEDIN6ADDRANY
+
+/*
+ * If this system is missing in6addr_loopback, 
+ * LWRES_PLATFORM_NEEDIN6ADDRLOOPBACK will be defined.
+ */
+#undef LWRES_PLATFORM_NEEDIN6ADDRLOOPBACK
+
+/*
+ * If this system has in_addr6, rather than in6_addr,
+ * LWRES_PLATFORM_HAVEINADDR6 will be defined.
+ */
+#undef LWRES_PLATFORM_HAVEINADDR6
+
+/*
+ * Defined if unistd.h does not cause fd_set to be delared.
+ */
+#define LWRES_PLATFORM_NEEDSYSSELECTH 1
+
+/*
+ * Used to control how extern data is linked; needed for Win32 platforms.
+ */
+#undef LWRES_PLATFORM_USEDECLSPEC
+
+#ifndef LWRES_PLATFORM_USEDECLSPEC
+#define LIBLWRES_EXTERNAL_DATA
+#else
+#ifdef LIBLWRES_EXPORTS
+#define LIBLWRES_EXTERNAL_DATA __declspec(dllexport)
+#else
+#define LIBLWRES_EXTERNAL_DATA __declspec(dllimport)
+#endif
+#endif
+
+#endif /* LWRES_PLATFORM_H */
diff --git a/lib/liblwres/include/lwres/platform.h.in b/lib/liblwres/include/lwres/platform.h.in
new file mode 100644
index 000000000..c679d8fae
--- /dev/null
+++ b/lib/liblwres/include/lwres/platform.h.in
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2000, 2001  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+ * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
+ * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: platform.h.in,v 1.1 2004/03/15 20:35:25 as Exp $ */
+
+#ifndef LWRES_PLATFORM_H
+#define LWRES_PLATFORM_H 1
+
+/*****
+ ***** Platform-dependent defines.
+ *****/
+
+/***
+ *** Network.
+ ***/
+
+/*
+ * Define if this system needs the <netinet/in6.h> header file for IPv6.
+ */
+@LWRES_PLATFORM_NEEDNETINETIN6H@
+
+/*
+ * Define if this system needs the <netinet6/in6.h> header file for IPv6.
+ */
+@LWRES_PLATFORM_NEEDNETINET6IN6H@
+
+/*
+ * If sockaddrs on this system have an sa_len field, LWRES_PLATFORM_HAVESALEN
+ * will be defined.
+ */
+@LWRES_PLATFORM_HAVESALEN@
+
+/*
+ * If this system has the IPv6 structure definitions, LWRES_PLATFORM_HAVEIPV6
+ * will be defined.
+ */
+@LWRES_PLATFORM_HAVEIPV6@
+
+/*
+ * If this system is missing in6addr_any, LWRES_PLATFORM_NEEDIN6ADDRANY will
+ * be defined.
+ */
+@LWRES_PLATFORM_NEEDIN6ADDRANY@
+
+/*
+ * If this system is missing in6addr_loopback, 
+ * LWRES_PLATFORM_NEEDIN6ADDRLOOPBACK will be defined.
+ */
+@LWRES_PLATFORM_NEEDIN6ADDRLOOPBACK@
+
+/*
+ * If this system has in_addr6, rather than in6_addr,
+ * LWRES_PLATFORM_HAVEINADDR6 will be defined.
+ */
+@LWRES_PLATFORM_HAVEINADDR6@
+
+/*
+ * Defined if unistd.h does not cause fd_set to be delared.
+ */
+@LWRES_PLATFORM_NEEDSYSSELECTH@
+
+/*
+ * Used to control how extern data is linked; needed for Win32 platforms.
+ */
+@LWRES_PLATFORM_USEDECLSPEC@
+
+#ifndef LWRES_PLATFORM_USEDECLSPEC
+#define LIBLWRES_EXTERNAL_DATA
+#else
+#ifdef LIBLWRES_EXPORTS
+#define LIBLWRES_EXTERNAL_DATA __declspec(dllexport)
+#else
+#define LIBLWRES_EXTERNAL_DATA __declspec(dllimport)
+#endif
+#endif
+
+#endif /* LWRES_PLATFORM_H */
diff --git a/lib/liblwres/include/lwres/result.h b/lib/liblwres/include/lwres/result.h
new file mode 100644
index 000000000..42e1bccea
--- /dev/null
+++ b/lib/liblwres/include/lwres/result.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2000, 2001  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+ * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
+ * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: result.h,v 1.1 2004/03/15 20:35:25 as Exp $ */
+
+#ifndef LWRES_RESULT_H
+#define LWRES_RESULT_H 1
+
+typedef unsigned int lwres_result_t;
+
+#define LWRES_R_SUCCESS			0
+#define LWRES_R_NOMEMORY		1
+#define LWRES_R_TIMEOUT			2
+#define LWRES_R_NOTFOUND		3
+#define LWRES_R_UNEXPECTEDEND		4	/* unexpected end of input */
+#define LWRES_R_FAILURE			5	/* generic failure */
+#define LWRES_R_IOERROR			6
+#define LWRES_R_NOTIMPLEMENTED		7
+#define LWRES_R_UNEXPECTED		8
+#define LWRES_R_TRAILINGDATA		9
+#define LWRES_R_INCOMPLETE		10
+#define LWRES_R_RETRY			11
+#define LWRES_R_TYPENOTFOUND		12
+#define LWRES_R_TOOLARGE		13
+
+#endif /* LWRES_RESULT_H */