Import initial strongswan 2.7.0 version into SVN.

30 files changed, 6670 insertions, 0 deletions

diff --git a/linux/include/crypto/des.h b/linux/include/crypto/des.h
new file mode 100644
index 000000000..baddf8647
--- /dev/null
+++ b/linux/include/crypto/des.h
@@ -0,0 +1,308 @@
+/* crypto/des/des.org */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+/* WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING 
+ *
+ * Always modify des.org since des.h is automatically generated from
+ * it during SSLeay configuration.
+ *
+ * WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+ */
+
+#ifndef HEADER_DES_H
+#define HEADER_DES_H
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+/* If this is set to 'unsigned int' on a DEC Alpha, this gives about a
+ * %20 speed up (longs are 8 bytes, int's are 4). */
+/* Must be unsigned int on ia64/Itanium or DES breaks badly */
+
+#ifdef __KERNEL__
+#include <linux/types.h>
+#else
+#include <sys/types.h>
+#endif
+
+#ifndef DES_LONG
+#define DES_LONG u_int32_t
+#endif
+
+typedef unsigned char des_cblock[8];
+typedef struct des_ks_struct
+	{
+	union	{
+		des_cblock _;
+		/* make sure things are correct size on machines with
+		 * 8 byte longs */
+		DES_LONG pad[2];
+		} ks;
+#undef _
+#define _	ks._
+	} des_key_schedule[16];
+
+#define DES_KEY_SZ 	(sizeof(des_cblock))
+#define DES_SCHEDULE_SZ (sizeof(des_key_schedule))
+
+#define DES_ENCRYPT	1
+#define DES_DECRYPT	0
+
+#define DES_CBC_MODE	0
+#define DES_PCBC_MODE	1
+
+#define des_ecb2_encrypt(i,o,k1,k2,e) \
+	des_ecb3_encrypt((i),(o),(k1),(k2),(k1),(e))
+
+#define des_ede2_cbc_encrypt(i,o,l,k1,k2,iv,e) \
+	des_ede3_cbc_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(e))
+
+#define des_ede2_cfb64_encrypt(i,o,l,k1,k2,iv,n,e) \
+	des_ede3_cfb64_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(n),(e))
+
+#define des_ede2_ofb64_encrypt(i,o,l,k1,k2,iv,n) \
+	des_ede3_ofb64_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(n))
+
+#define C_Block des_cblock
+#define Key_schedule des_key_schedule
+#ifdef KERBEROS
+#define ENCRYPT DES_ENCRYPT
+#define DECRYPT DES_DECRYPT
+#endif
+#define KEY_SZ DES_KEY_SZ
+#define string_to_key des_string_to_key
+#define read_pw_string des_read_pw_string
+#define random_key des_random_key
+#define pcbc_encrypt des_pcbc_encrypt
+#define set_key des_set_key
+#define key_sched des_key_sched
+#define ecb_encrypt des_ecb_encrypt
+#define cbc_encrypt des_cbc_encrypt
+#define ncbc_encrypt des_ncbc_encrypt
+#define xcbc_encrypt des_xcbc_encrypt
+#define cbc_cksum des_cbc_cksum
+#define quad_cksum des_quad_cksum
+
+/* For compatibility with the MIT lib - eay 20/05/92 */
+typedef des_key_schedule bit_64;
+#define des_fixup_key_parity des_set_odd_parity
+#define des_check_key_parity check_parity
+
+extern int des_check_key;	/* defaults to false */
+extern int des_rw_mode;		/* defaults to DES_PCBC_MODE */
+
+/* The next line is used to disable full ANSI prototypes, if your
+ * compiler has problems with the prototypes, make sure this line always
+ * evaluates to true :-) */
+#if defined(MSDOS) || defined(__STDC__)
+#undef NOPROTO
+#endif
+#ifndef NOPROTO
+char *des_options(void);
+void des_ecb3_encrypt(des_cblock *input,des_cblock *output,
+	des_key_schedule ks1,des_key_schedule ks2,
+	des_key_schedule ks3, int enc);
+DES_LONG des_cbc_cksum(des_cblock *input,des_cblock *output,
+	long length,des_key_schedule schedule,des_cblock *ivec);
+void des_cbc_encrypt(des_cblock *input,des_cblock *output,long length,
+	des_key_schedule schedule,des_cblock *ivec,int enc);
+void des_ncbc_encrypt(des_cblock *input,des_cblock *output,long length,
+	des_key_schedule schedule,des_cblock *ivec,int enc);
+void des_xcbc_encrypt(des_cblock *input,des_cblock *output,long length,
+	des_key_schedule schedule,des_cblock *ivec,
+	des_cblock *inw,des_cblock *outw,int enc);
+void des_cfb_encrypt(unsigned char *in,unsigned char *out,int numbits,
+	long length,des_key_schedule schedule,des_cblock *ivec,int enc);
+void des_ecb_encrypt(des_cblock *input,des_cblock *output,
+	des_key_schedule ks,int enc);
+void des_encrypt(DES_LONG *data,des_key_schedule ks, int enc);
+void des_encrypt2(DES_LONG *data,des_key_schedule ks, int enc);
+void des_encrypt3(DES_LONG *data, des_key_schedule ks1,
+	des_key_schedule ks2, des_key_schedule ks3);
+void des_decrypt3(DES_LONG *data, des_key_schedule ks1,
+	des_key_schedule ks2, des_key_schedule ks3);
+void des_ede3_cbc_encrypt(des_cblock *input, des_cblock *output, 
+	long length, des_key_schedule ks1, des_key_schedule ks2, 
+	des_key_schedule ks3, des_cblock *ivec, int enc);
+void des_ede3_cfb64_encrypt(unsigned char *in, unsigned char *out,
+	long length, des_key_schedule ks1, des_key_schedule ks2,
+	des_key_schedule ks3, des_cblock *ivec, int *num, int enc);
+void des_ede3_ofb64_encrypt(unsigned char *in, unsigned char *out,
+	long length, des_key_schedule ks1, des_key_schedule ks2,
+	des_key_schedule ks3, des_cblock *ivec, int *num);
+
+void des_xwhite_in2out(des_cblock (*des_key), des_cblock (*in_white),
+	des_cblock (*out_white));
+
+int des_enc_read(int fd,char *buf,int len,des_key_schedule sched,
+	des_cblock *iv);
+int des_enc_write(int fd,char *buf,int len,des_key_schedule sched,
+	des_cblock *iv);
+char *des_fcrypt(const char *buf,const char *salt, char *ret);
+#ifdef PERL5
+char *des_crypt(const char *buf,const char *salt);
+#else
+/* some stupid compilers complain because I have declared char instead
+ * of const char */
+#ifndef __KERNEL__
+#ifdef HEADER_DES_LOCL_H
+char *crypt(const char *buf,const char *salt);
+#else /* HEADER_DES_LOCL_H */
+char *crypt(void);
+#endif /* HEADER_DES_LOCL_H */
+#endif /* __KERNEL__ */
+#endif /* PERL5 */
+void des_ofb_encrypt(unsigned char *in,unsigned char *out,
+	int numbits,long length,des_key_schedule schedule,des_cblock *ivec);
+void des_pcbc_encrypt(des_cblock *input,des_cblock *output,long length,
+	des_key_schedule schedule,des_cblock *ivec,int enc);
+DES_LONG des_quad_cksum(des_cblock *input,des_cblock *output,
+	long length,int out_count,des_cblock *seed);
+void des_random_seed(des_cblock key);
+void des_random_key(des_cblock ret);
+int des_read_password(des_cblock *key,char *prompt,int verify);
+int des_read_2passwords(des_cblock *key1,des_cblock *key2,
+	char *prompt,int verify);
+int des_read_pw_string(char *buf,int length,char *prompt,int verify);
+void des_set_odd_parity(des_cblock *key);
+int des_is_weak_key(des_cblock *key);
+int des_set_key(des_cblock *key,des_key_schedule schedule);
+int des_key_sched(des_cblock *key,des_key_schedule schedule);
+void des_string_to_key(char *str,des_cblock *key);
+void des_string_to_2keys(char *str,des_cblock *key1,des_cblock *key2);
+void des_cfb64_encrypt(unsigned char *in, unsigned char *out, long length,
+	des_key_schedule schedule, des_cblock *ivec, int *num, int enc);
+void des_ofb64_encrypt(unsigned char *in, unsigned char *out, long length,
+	des_key_schedule schedule, des_cblock *ivec, int *num);
+int des_read_pw(char *buf, char *buff, int size, char *prompt, int verify);
+
+/* Extra functions from Mark Murray <mark@grondar.za> */
+/* The following functions are not in the normal unix build or the
+ * SSLeay build.  When using the SSLeay build, use RAND_seed()
+ * and RAND_bytes() instead. */
+int des_new_random_key(des_cblock *key);
+void des_init_random_number_generator(des_cblock *key);
+void des_set_random_generator_seed(des_cblock *key);
+void des_set_sequence_number(des_cblock new_sequence_number);
+void des_generate_random_block(des_cblock *block);
+
+#else
+
+char *des_options();
+void des_ecb3_encrypt();
+DES_LONG des_cbc_cksum();
+void des_cbc_encrypt();
+void des_ncbc_encrypt();
+void des_xcbc_encrypt();
+void des_cfb_encrypt();
+void des_ede3_cfb64_encrypt();
+void des_ede3_ofb64_encrypt();
+void des_ecb_encrypt();
+void des_encrypt();
+void des_encrypt2();
+void des_encrypt3();
+void des_decrypt3();
+void des_ede3_cbc_encrypt();
+int des_enc_read();
+int des_enc_write();
+char *des_fcrypt();
+#ifdef PERL5
+char *des_crypt();
+#else
+char *crypt();
+#endif
+void des_ofb_encrypt();
+void des_pcbc_encrypt();
+DES_LONG des_quad_cksum();
+void des_random_seed();
+void des_random_key();
+int des_read_password();
+int des_read_2passwords();
+int des_read_pw_string();
+void des_set_odd_parity();
+int des_is_weak_key();
+int des_set_key();
+int des_key_sched();
+void des_string_to_key();
+void des_string_to_2keys();
+void des_cfb64_encrypt();
+void des_ofb64_encrypt();
+int des_read_pw();
+void des_xwhite_in2out();
+
+/* Extra functions from Mark Murray <mark@grondar.za> */
+/* The following functions are not in the normal unix build or the
+ * SSLeay build.  When using the SSLeay build, use RAND_seed()
+ * and RAND_bytes() instead. */
+#ifdef FreeBSD
+int des_new_random_key();
+void des_init_random_number_generator();
+void des_set_random_generator_seed();
+void des_set_sequence_number();
+void des_generate_random_block();
+#endif
+
+#endif
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif
diff --git a/linux/include/freeswan.h b/linux/include/freeswan.h
new file mode 100644
index 000000000..4ef948b0a
--- /dev/null
+++ b/linux/include/freeswan.h
@@ -0,0 +1,477 @@
+#ifndef _FREESWAN_H
+/*
+ * header file for FreeS/WAN library functions
+ * Copyright (C) 1998, 1999, 2000  Henry Spencer.
+ * Copyright (C) 1999, 2000, 2001  Richard Guy Briggs
+ * 
+ * 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: freeswan.h,v 1.2 2004/03/22 21:53:17 as Exp $
+ */
+#define	_FREESWAN_H	/* seen it, no need to see it again */
+
+
+
+/*
+ * We've just got to have some datatypes defined...  And annoyingly, just
+ * where we get them depends on whether we're in userland or not.
+ */
+#ifdef __KERNEL__
+
+#  include <linux/types.h>
+#  include <linux/in.h>
+
+#else /* __KERNEL__ */
+
+#  include <stdio.h>
+#  include <netinet/in.h>
+
+#  define uint8_t u_int8_t
+#  define uint16_t u_int16_t 
+#  define uint32_t u_int32_t 
+#  define uint64_t u_int64_t 
+
+#  define DEBUG_NO_STATIC static
+
+#endif /* __KERNEL__ */
+
+#include <freeswan/ipsec_param.h>
+
+
+/*
+ * Grab the kernel version to see if we have NET_21, and therefore 
+ * IPv6. Some of this is repeated from ipsec_kversions.h. Of course, 
+ * we aren't really testing if the kernel has IPv6, but rather if the
+ * the include files do.
+ */
+#include <linux/version.h>
+#ifndef KERNEL_VERSION
+#define KERNEL_VERSION(x,y,z) (((x)<<16)+((y)<<8)+(z))
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,0)
+#define NET_21
+#endif
+
+#ifndef IPPROTO_COMP
+#  define IPPROTO_COMP 108
+#endif /* !IPPROTO_COMP */
+
+#ifndef IPPROTO_INT
+#  define IPPROTO_INT 61
+#endif /* !IPPROTO_INT */
+
+#ifdef CONFIG_IPSEC_DEBUG
+#  define DEBUG_NO_STATIC
+#else /* CONFIG_IPSEC_DEBUG */
+#  define DEBUG_NO_STATIC static
+#endif /* CONFIG_IPSEC_DEBUG */
+
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL /* KERNEL ifdef */
+#ifndef NAT_TRAVERSAL
+#define NAT_TRAVERSAL
+#endif
+#endif
+#ifdef NAT_TRAVERSAL
+#define ESPINUDP_WITH_NON_IKE   1  /* draft-ietf-ipsec-nat-t-ike-00/01 */
+#define ESPINUDP_WITH_NON_ESP   2  /* draft-ietf-ipsec-nat-t-ike-02    */
+#endif
+
+/*
+ * Basic data types for the address-handling functions.
+ * ip_address and ip_subnet are supposed to be opaque types; do not
+ * use their definitions directly, they are subject to change!
+ */
+
+/* first, some quick fakes in case we're on an old system with no IPv6 */
+#ifndef s6_addr16
+struct in6_addr {
+	union 
+	{
+		__u8		u6_addr8[16];
+		__u16		u6_addr16[8];
+		__u32		u6_addr32[4];
+	} in6_u;
+#define s6_addr			in6_u.u6_addr8
+#define s6_addr16		in6_u.u6_addr16
+#define s6_addr32		in6_u.u6_addr32
+};
+struct sockaddr_in6 {
+	unsigned short int	sin6_family;    /* AF_INET6 */
+	__u16			sin6_port;      /* Transport layer port # */
+	__u32			sin6_flowinfo;  /* IPv6 flow information */
+	struct in6_addr		sin6_addr;      /* IPv6 address */
+	__u32			sin6_scope_id;  /* scope id (new in RFC2553) */
+};
+#endif	/* !s6_addr16 */
+
+/* then the main types */
+typedef struct {
+	union {
+		struct sockaddr_in v4;
+		struct sockaddr_in6 v6;
+	} u;
+} ip_address;
+typedef struct {
+	ip_address addr;
+	int maskbits;
+} ip_subnet;
+
+/* and the SA ID stuff */
+#ifdef __KERNEL__
+typedef __u32 ipsec_spi_t;
+#else
+typedef u_int32_t ipsec_spi_t;
+#endif
+typedef struct {		/* to identify an SA, we need: */
+        ip_address dst;		/* A. destination host */
+        ipsec_spi_t spi;	/* B. 32-bit SPI, assigned by dest. host */
+#		define	SPI_PASS	256	/* magic values... */
+#		define	SPI_DROP	257	/* ...for use... */
+#		define	SPI_REJECT	258	/* ...with SA_INT */
+#		define	SPI_HOLD	259
+#		define	SPI_TRAP	260
+#		define  SPI_TRAPSUBNET  261
+	int proto;		/* C. protocol */
+#		define	SA_ESP	50	/* IPPROTO_ESP */
+#		define	SA_AH	51	/* IPPROTO_AH */
+#		define	SA_IPIP	4	/* IPPROTO_IPIP */
+#		define	SA_COMP	108	/* IPPROTO_COMP */
+#		define	SA_INT	61	/* IANA reserved for internal use */
+} ip_said;
+struct sa_id {			/* old v4-only version */
+        struct in_addr dst;
+        ipsec_spi_t spi;
+	int proto;
+};
+
+/* misc */
+typedef const char *err_t;	/* error message, or NULL for success */
+struct prng {			/* pseudo-random-number-generator guts */
+	unsigned char sbox[256];
+	int i, j;
+	unsigned long count;
+};
+
+
+/*
+ * definitions for user space, taken from freeswan/ipsec_sa.h
+ */
+typedef uint32_t IPsecSAref_t;
+
+#define IPSEC_SA_REF_FIELD_WIDTH (8 * sizeof(IPsecSAref_t))
+
+#define IPsecSAref2NFmark(x) ((x) << (IPSEC_SA_REF_FIELD_WIDTH - IPSEC_SA_REF_TABLE_IDX_WIDTH))
+#define NFmark2IPsecSAref(x) ((x) >> (IPSEC_SA_REF_FIELD_WIDTH - IPSEC_SA_REF_TABLE_IDX_WIDTH))
+
+#define IPSEC_SAREF_NULL (~((IPsecSAref_t)0))
+
+/* GCC magic for use in function definitions! */
+#ifdef GCC_LINT
+# define PRINTF_LIKE(n) __attribute__ ((format(printf, n, n+1)))
+# define NEVER_RETURNS __attribute__ ((noreturn))
+# define UNUSED __attribute__ ((unused))
+# define BLANK_FORMAT " "	/* GCC_LINT whines about empty formats */
+#else
+# define PRINTF_LIKE(n)	/* ignore */
+# define NEVER_RETURNS /* ignore */
+# define UNUSED /* ignore */
+# define BLANK_FORMAT ""
+#endif
+
+
+
+
+
+/*
+ * new IPv6-compatible functions
+ */
+
+/* text conversions */
+err_t ttoul(const char *src, size_t srclen, int format, unsigned long *dst);
+size_t ultot(unsigned long src, int format, char *buf, size_t buflen);
+#define	ULTOT_BUF	(22+1)	/* holds 64 bits in octal */
+err_t ttoaddr(const char *src, size_t srclen, int af, ip_address *dst);
+err_t tnatoaddr(const char *src, size_t srclen, int af, ip_address *dst);
+size_t addrtot(const ip_address *src, int format, char *buf, size_t buflen);
+/* RFC 1886 old IPv6 reverse-lookup format is the bulkiest */
+#define	ADDRTOT_BUF	(32*2 + 3 + 1 + 3 + 1 + 1)
+err_t ttosubnet(const char *src, size_t srclen, int af, ip_subnet *dst);
+size_t subnettot(const ip_subnet *src, int format, char *buf, size_t buflen);
+#define	SUBNETTOT_BUF	(ADDRTOT_BUF + 1 + 3)
+err_t ttosa(const char *src, size_t srclen, ip_said *dst);
+size_t satot(const ip_said *src, int format, char *bufptr, size_t buflen);
+#define	SATOT_BUF	(5 + ULTOA_BUF + 1 + ADDRTOT_BUF)
+err_t ttodata(const char *src, size_t srclen, int base, char *buf,
+						size_t buflen, size_t *needed);
+err_t ttodatav(const char *src, size_t srclen, int base,
+	       char *buf,  size_t buflen, size_t *needed,
+	       char *errp, size_t errlen, unsigned int flags);
+#define	TTODATAV_BUF	40	/* ttodatav's largest non-literal message */
+#define TTODATAV_IGNORESPACE  (1<<1)  /* ignore spaces in base64 encodings*/
+#define TTODATAV_SPACECOUNTS  0       /* do not ignore spaces in base64   */
+
+size_t datatot(const char *src, size_t srclen, int format, char *buf,
+								size_t buflen);
+size_t keyblobtoid(const unsigned char *src, size_t srclen, char *dst,
+								size_t dstlen);
+size_t splitkeytoid(const unsigned char *e, size_t elen, const unsigned char *m,
+					size_t mlen, char *dst, size_t dstlen);
+#define	KEYID_BUF		10	/* up to 9 text digits plus NUL */
+err_t ttoprotoport(char *src, size_t src_len, u_int8_t *proto, u_int16_t *port,
+							int *has_port_wildcard);
+
+/* initializations */
+void initsaid(const ip_address *addr, ipsec_spi_t spi, int proto, ip_said *dst);
+err_t loopbackaddr(int af, ip_address *dst);
+err_t unspecaddr(int af, ip_address *dst);
+err_t anyaddr(int af, ip_address *dst);
+err_t initaddr(const unsigned char *src, size_t srclen, int af, ip_address *dst);
+err_t initsubnet(const ip_address *addr, int maskbits, int clash, ip_subnet *dst);
+err_t addrtosubnet(const ip_address *addr, ip_subnet *dst);
+
+/* misc. conversions and related */
+err_t rangetosubnet(const ip_address *from, const ip_address *to, ip_subnet *dst);
+int addrtypeof(const ip_address *src);
+int subnettypeof(const ip_subnet *src);
+size_t addrlenof(const ip_address *src);
+size_t addrbytesptr(const ip_address *src, const unsigned char **dst);
+size_t addrbytesof(const ip_address *src, unsigned char *dst, size_t dstlen);
+int masktocount(const ip_address *src);
+void networkof(const ip_subnet *src, ip_address *dst);
+void maskof(const ip_subnet *src, ip_address *dst);
+
+/* tests */
+int sameaddr(const ip_address *a, const ip_address *b);
+int addrcmp(const ip_address *a, const ip_address *b);
+int samesubnet(const ip_subnet *a, const ip_subnet *b);
+int addrinsubnet(const ip_address *a, const ip_subnet *s);
+int subnetinsubnet(const ip_subnet *a, const ip_subnet *b);
+int subnetishost(const ip_subnet *s);
+int samesaid(const ip_said *a, const ip_said *b);
+int sameaddrtype(const ip_address *a, const ip_address *b);
+int samesubnettype(const ip_subnet *a, const ip_subnet *b);
+int isanyaddr(const ip_address *src);
+int isunspecaddr(const ip_address *src);
+int isloopbackaddr(const ip_address *src);
+
+/* low-level grot */
+int portof(const ip_address *src);
+void setportof(int port, ip_address *dst);
+struct sockaddr *sockaddrof(ip_address *src);
+size_t sockaddrlenof(const ip_address *src);
+
+/* PRNG */
+void prng_init(struct prng *prng, const unsigned char *key, size_t keylen);
+void prng_bytes(struct prng *prng, unsigned char *dst, size_t dstlen);
+unsigned long prng_count(struct prng *prng);
+void prng_final(struct prng *prng);
+
+/* odds and ends */
+const char *ipsec_version_code(void);
+const char *ipsec_version_string(void);
+const char **ipsec_copyright_notice(void);
+
+const char *dns_string_rr(int rr, char *buf, int bufsize);
+const char *dns_string_datetime(time_t seconds,
+				char *buf,
+				int bufsize);
+
+
+/*
+ * old functions, to be deleted eventually
+ */
+
+/* unsigned long */
+const char *			/* NULL for success, else string literal */
+atoul(
+	const char *src,
+	size_t srclen,		/* 0 means strlen(src) */
+	int base,		/* 0 means figure it out */
+	unsigned long *resultp
+);
+size_t				/* space needed for full conversion */
+ultoa(
+	unsigned long n,
+	int base,
+	char *dst,
+	size_t dstlen
+);
+#define	ULTOA_BUF	21	/* just large enough for largest result, */
+				/* assuming 64-bit unsigned long! */
+
+/* Internet addresses */
+const char *			/* NULL for success, else string literal */
+atoaddr(
+	const char *src,
+	size_t srclen,		/* 0 means strlen(src) */
+	struct in_addr *addr
+);
+size_t				/* space needed for full conversion */
+addrtoa(
+	struct in_addr addr,
+	int format,		/* character; 0 means default */
+	char *dst,
+	size_t dstlen
+);
+#define	ADDRTOA_BUF	16	/* just large enough for largest result */
+
+/* subnets */
+const char *			/* NULL for success, else string literal */
+atosubnet(
+	const char *src,
+	size_t srclen,		/* 0 means strlen(src) */
+	struct in_addr *addr,
+	struct in_addr *mask
+);
+size_t				/* space needed for full conversion */
+subnettoa(
+	struct in_addr addr,
+	struct in_addr mask,
+	int format,		/* character; 0 means default */
+	char *dst,
+	size_t dstlen
+);
+#define	SUBNETTOA_BUF	32	/* large enough for worst case result */
+
+/* ranges */
+const char *			/* NULL for success, else string literal */
+atoasr(
+	const char *src,
+	size_t srclen,		/* 0 means strlen(src) */
+	char *type,		/* 'a', 's', 'r' */
+	struct in_addr *addrs	/* two-element array */
+);
+size_t				/* space needed for full conversion */
+rangetoa(
+	struct in_addr *addrs,	/* two-element array */
+	int format,		/* character; 0 means default */
+	char *dst,
+	size_t dstlen
+);
+#define	RANGETOA_BUF	34	/* large enough for worst case result */
+
+/* data types for SA conversion functions */
+
+/* SAs */
+const char *			/* NULL for success, else string literal */
+atosa(
+	const char *src,
+	size_t srclen,		/* 0 means strlen(src) */
+	struct sa_id *sa
+);
+size_t				/* space needed for full conversion */
+satoa(
+	struct sa_id sa,
+	int format,		/* character; 0 means default */
+	char *dst,
+	size_t dstlen
+);
+#define	SATOA_BUF	(3+ULTOA_BUF+ADDRTOA_BUF)
+
+/* generic data, e.g. keys */
+const char *			/* NULL for success, else string literal */
+atobytes(
+	const char *src,
+	size_t srclen,		/* 0 means strlen(src) */
+	char *dst,
+	size_t dstlen,
+	size_t *lenp		/* NULL means don't bother telling me */
+);
+size_t				/* 0 failure, else true size */
+bytestoa(
+	const char *src,
+	size_t srclen,
+	int format,		/* character; 0 means default */
+	char *dst,
+	size_t dstlen
+);
+
+/* old versions of generic-data functions; deprecated */
+size_t				/* 0 failure, else true size */
+atodata(
+	const char *src,
+	size_t srclen,		/* 0 means strlen(src) */
+	char *dst,
+	size_t dstlen
+);
+size_t				/* 0 failure, else true size */
+datatoa(
+	const char *src,
+	size_t srclen,
+	int format,		/* character; 0 means default */
+	char *dst,
+	size_t dstlen
+);
+
+/* part extraction and special addresses */
+struct in_addr
+subnetof(
+	struct in_addr addr,
+	struct in_addr mask
+);
+struct in_addr
+hostof(
+	struct in_addr addr,
+	struct in_addr mask
+);
+struct in_addr
+broadcastof(
+	struct in_addr addr,
+	struct in_addr mask
+);
+
+/* mask handling */
+int
+goodmask(
+	struct in_addr mask
+);
+int
+masktobits(
+	struct in_addr mask
+);
+struct in_addr
+bitstomask(
+	int n
+);
+
+
+
+/*
+ * general utilities
+ */
+
+#ifndef __KERNEL__
+/* option pickup from files (userland only because of use of FILE) */
+const char *optionsfrom(const char *filename, int *argcp, char ***argvp,
+						int optind, FILE *errorreport);
+#endif
+
+/*
+ * Debugging levels for pfkey_lib_debug
+ */
+#define PF_KEY_DEBUG_PARSE_NONE    0
+#define PF_KEY_DEBUG_PARSE_PROBLEM 1
+#define PF_KEY_DEBUG_PARSE_STRUCT  2
+#define PF_KEY_DEBUG_PARSE_FLOW    4
+#define PF_KEY_DEBUG_PARSE_MAX     7
+
+extern unsigned int pfkey_lib_debug;  /* bits selecting what to report */
+
+/*
+ * pluto and lwdnsq need to know the maximum size of the commands to,
+ * and replies from lwdnsq. 
+ */
+
+#define LWDNSQ_CMDBUF_LEN      1024
+#define LWDNSQ_RESULT_LEN_MAX  4096
+
+#endif /* _FREESWAN_H */
diff --git a/linux/include/freeswan/ipcomp.h b/linux/include/freeswan/ipcomp.h
new file mode 100644
index 000000000..ed8095517
--- /dev/null
+++ b/linux/include/freeswan/ipcomp.h
@@ -0,0 +1,61 @@
+/*
+ * IPCOMP zlib interface code.
+ * Copyright (C) 2000  Svenning Soerensen <svenning@post5.tele.dk>
+ * Copyright (C) 2000, 2001  Richard Guy Briggs <rgb@conscoop.ottawa.on.ca>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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/gpl.txt>.
+ * 
+ * This program 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 General Public License
+ * for more details.
+
+ RCSID $Id: ipcomp.h,v 1.1 2004/03/15 20:35:25 as Exp $
+
+ */
+
+/* SSS */
+
+#ifndef _IPCOMP_H
+#define _IPCOMP_H
+
+/* Prefix all global deflate symbols with "ipcomp_" to avoid collisions with ppp_deflate & ext2comp */
+#ifndef IPCOMP_PREFIX
+#define IPCOMP_PREFIX
+#endif /* IPCOMP_PREFIX */
+
+#ifndef IPPROTO_COMP
+#define IPPROTO_COMP 108
+#endif /* IPPROTO_COMP */
+
+#ifdef CONFIG_IPSEC_DEBUG
+extern int sysctl_ipsec_debug_ipcomp;
+#endif /* CONFIG_IPSEC_DEBUG */
+
+struct ipcomphdr {			/* IPCOMP header */
+    __u8    ipcomp_nh;		/* Next header (protocol) */
+    __u8    ipcomp_flags;	/* Reserved, must be 0 */
+    __u16   ipcomp_cpi;		/* Compression Parameter Index */
+};
+
+extern struct inet_protocol comp_protocol;
+extern int sysctl_ipsec_debug_ipcomp;
+
+#define IPCOMP_UNCOMPRESSABLE     0x000000001
+#define IPCOMP_COMPRESSIONERROR   0x000000002
+#define IPCOMP_PARMERROR          0x000000004
+#define IPCOMP_DECOMPRESSIONERROR 0x000000008
+
+#define IPCOMP_ADAPT_INITIAL_TRIES	8
+#define IPCOMP_ADAPT_INITIAL_SKIP	4
+#define IPCOMP_ADAPT_SUBSEQ_TRIES	2
+#define IPCOMP_ADAPT_SUBSEQ_SKIP	8
+
+/* Function prototypes */
+struct sk_buff *skb_compress(struct sk_buff *skb, struct ipsec_sa *ips, unsigned int *flags);
+struct sk_buff *skb_decompress(struct sk_buff *skb, struct ipsec_sa *ips, unsigned int *flags);
+
+#endif /* _IPCOMP_H */
diff --git a/linux/include/freeswan/ipsec_ah.h b/linux/include/freeswan/ipsec_ah.h
new file mode 100644
index 000000000..e088288d3
--- /dev/null
+++ b/linux/include/freeswan/ipsec_ah.h
@@ -0,0 +1,235 @@
+/*
+ * Authentication Header declarations
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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/gpl.txt>.
+ * 
+ * This program 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 General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_ah.h,v 1.2 2004/03/22 21:53:18 as Exp $
+ */
+
+#include "ipsec_md5h.h"
+#include "ipsec_sha1.h"
+
+#ifndef IPPROTO_AH
+#define IPPROTO_AH 51
+#endif /* IPPROTO_AH */
+
+#define AH_FLENGTH		12		/* size of fixed part */
+#define AHMD5_KMAX		64		/* MD5 max 512 bits key */
+#define AHMD5_AMAX		12		/* MD5 96 bits of authenticator */
+
+#define AHMD596_KLEN		16		/* MD5 128 bits key */
+#define AHSHA196_KLEN		20		/* SHA1 160 bits key */
+
+#define AHMD596_ALEN    	16		/* MD5 128 bits authentication length */
+#define AHSHA196_ALEN		20		/* SHA1 160 bits authentication length */
+
+#define AHMD596_BLKLEN  	64		/* MD5 block length */
+#define AHSHA196_BLKLEN 	64		/* SHA1 block length */
+#define AHSHA2_256_BLKLEN 	64		/* SHA2-256 block length */
+#define AHSHA2_384_BLKLEN 	128 		/* SHA2-384 block length (?) */
+#define AHSHA2_512_BLKLEN 	128		/* SHA2-512 block length */
+
+#define AH_BLKLEN_MAX 		128		/* keep up to date! */
+
+#define AH_AMAX         	AHSHA196_ALEN   /* keep up to date! */
+#define AHHMAC_HASHLEN  	12              /* authenticator length of 96bits */
+#define AHHMAC_RPLLEN   	4               /* 32 bit replay counter */
+
+#define DB_AH_PKTRX		0x0001
+#define DB_AH_PKTRX2		0x0002
+#define DB_AH_DMP		0x0004
+#define DB_AH_IPSA		0x0010
+#define DB_AH_XF		0x0020
+#define DB_AH_INAU		0x0040
+#define DB_AH_REPLAY		0x0100
+
+#ifdef __KERNEL__
+
+/* General HMAC algorithm is described in RFC 2104 */
+
+#define		HMAC_IPAD	0x36
+#define		HMAC_OPAD	0x5C
+
+struct md5_ctx {
+	MD5_CTX ictx;		/* context after H(K XOR ipad) */
+	MD5_CTX	octx;		/* context after H(K XOR opad) */
+};
+
+struct sha1_ctx {
+	SHA1_CTX ictx;		/* context after H(K XOR ipad) */
+	SHA1_CTX octx;		/* context after H(K XOR opad) */
+};
+
+struct auth_alg {
+	void (*init)(void *ctx);
+	void (*update)(void *ctx, unsigned char *bytes, __u32 len);
+	void (*final)(unsigned char *hash, void *ctx);
+	int hashlen;
+};
+
+extern struct inet_protocol ah_protocol;
+
+struct options;
+
+extern int 
+ah_rcv(struct sk_buff *skb,
+       struct device *dev,
+       struct options *opt, 
+       __u32 daddr,
+       unsigned short len,
+       __u32 saddr,
+       int redo,
+       struct inet_protocol *protocol);
+
+struct ahhdr				/* Generic AH header */
+{
+	__u8	ah_nh;			/* Next header (protocol) */
+	__u8	ah_hl;			/* AH length, in 32-bit words */
+	__u16	ah_rv;			/* reserved, must be 0 */
+	__u32	ah_spi;			/* Security Parameters Index */
+        __u32   ah_rpl;                 /* Replay prevention */
+	__u8	ah_data[AHHMAC_HASHLEN];/* Authentication hash */
+};
+#define AH_BASIC_LEN 8      /* basic AH header is 8 bytes, nh,hl,rv,spi
+			     * and the ah_hl, says how many bytes after that
+			     * to cover. */
+
+
+#ifdef CONFIG_IPSEC_DEBUG
+extern int debug_ah;
+#endif /* CONFIG_IPSEC_DEBUG */
+#endif /* __KERNEL__ */
+
+/*
+ * $Log: ipsec_ah.h,v $
+ * Revision 1.2  2004/03/22 21:53:18  as
+ * merged alg-0.8.1 branch with HEAD
+ *
+ * Revision 1.1.4.1  2004/03/16 09:48:18  as
+ * alg-0.8.1rc12 patch merged
+ *
+ * Revision 1.1  2004/03/15 20:35:25  as
+ * added files from freeswan-2.04-x509-1.5.3
+ *
+ * Revision 1.20  2003/02/06 02:21:34  rgb
+ *
+ * Moved "struct auth_alg" from ipsec_rcv.c to ipsec_ah.h .
+ * Changed "struct ah" to "struct ahhdr" and "struct esp" to "struct esphdr".
+ * Removed "#ifdef INBOUND_POLICY_CHECK_eroute" dead code.
+ *
+ * Revision 1.19  2002/09/16 21:19:13  mcr
+ * 	fixes for west-ah-icmp-01 - length of AH header must be
+ * 	calculated properly, and next_header field properly copied.
+ *
+ * Revision 1.18  2002/05/14 02:37:02  rgb
+ * Change reference from _TDB to _IPSA.
+ *
+ * Revision 1.17  2002/04/24 07:36:46  mcr
+ * Moved from ./klips/net/ipsec/ipsec_ah.h,v
+ *
+ * Revision 1.16  2002/02/20 01:27:06  rgb
+ * Ditched a pile of structs only used by the old Netlink interface.
+ *
+ * Revision 1.15  2001/12/11 02:35:57  rgb
+ * Change "struct net_device" to "struct device" for 2.2 compatibility.
+ *
+ * Revision 1.14  2001/11/26 09:23:47  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.13.2.1  2001/09/25 02:18:24  mcr
+ * 	replace "struct device" with "struct netdevice"
+ *
+ * Revision 1.13  2001/06/14 19:35:08  rgb
+ * Update copyright date.
+ *
+ * Revision 1.12  2000/09/12 03:21:20  rgb
+ * Cleared out unused htonq.
+ *
+ * Revision 1.11  2000/09/08 19:12:55  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.10  2000/01/21 06:13:10  rgb
+ * Tidied up spacing.
+ * Added macros for HMAC padding magic numbers.(kravietz)
+ *
+ * Revision 1.9  1999/12/07 18:16:23  rgb
+ * Fixed comments at end of #endif lines.
+ *
+ * Revision 1.8  1999/04/11 00:28:56  henry
+ * GPL boilerplate
+ *
+ * Revision 1.7  1999/04/06 04:54:25  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.6  1999/01/26 02:06:01  rgb
+ * Removed CONFIG_IPSEC_ALGO_SWITCH macro.
+ *
+ * Revision 1.5  1999/01/22 06:17:49  rgb
+ * Updated macro comments.
+ * Added context types to support algorithm switch code.
+ * 64-bit clean-up -- converting 'u long long' to __u64.
+ *
+ * Revision 1.4  1998/07/14 15:54:56  rgb
+ * Add #ifdef __KERNEL__ to protect kernel-only structures.
+ *
+ * Revision 1.3  1998/06/30 18:05:16  rgb
+ * Comment out references to htonq.
+ *
+ * Revision 1.2  1998/06/25 19:33:46  rgb
+ * Add prototype for protocol receive function.
+ * Rearrange for more logical layout.
+ *
+ * Revision 1.1  1998/06/18 21:27:43  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.4  1998/05/18 22:28:43  rgb
+ * Disable key printing facilities from /proc/net/ipsec_*.
+ *
+ * Revision 1.3  1998/04/21 21:29:07  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.2  1998/04/12 22:03:17  rgb
+ * Updated ESP-3DES-HMAC-MD5-96,
+ * 	ESP-DES-HMAC-MD5-96,
+ * 	AH-HMAC-MD5-96,
+ * 	AH-HMAC-SHA1-96 since Henry started freeswan cvs repository
+ * from old standards (RFC182[5-9] to new (as of March 1998) drafts.
+ *
+ * Fixed eroute references in /proc/net/ipsec*.
+ *
+ * Started to patch module unloading memory leaks in ipsec_netlink and
+ * radij tree unloading.
+ *
+ * Revision 1.1  1998/04/09 03:05:55  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:02  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * Added definitions for new AH transforms.
+ *
+ * Revision 0.3  1996/11/20 14:35:48  ji
+ * Minor Cleanup.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff --git a/linux/include/freeswan/ipsec_alg.h b/linux/include/freeswan/ipsec_alg.h
new file mode 100644
index 000000000..a393784b1
--- /dev/null
+++ b/linux/include/freeswan/ipsec_alg.h
@@ -0,0 +1,254 @@
+/*
+ * Modular extensions service and registration functions interface
+ *
+ * Author: JuanJo Ciarlante <jjo-ipsec@mendoza.gov.ar>
+ *
+ * $Id: ipsec_alg.h,v 1.2 2004/03/22 21:53:18 as Exp $
+ *
+ */
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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/gpl.txt>.
+ * 
+ * This program 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 General Public License
+ * for more details.
+ *
+ */
+#ifndef IPSEC_ALG_H
+#define IPSEC_ALG_H
+
+/* 
+ *   gcc >= 3.2 has removed __FUNCTION__, replaced by C99 __func__
+ *   *BUT* its a compiler variable.
+ */
+#if (__GNUC__ >= 3)
+#ifndef __FUNCTION__
+#define __FUNCTION__ __func__
+#endif
+#endif
+
+/*	Version 0.8.1-0 */
+#define IPSEC_ALG_VERSION	0x00080100
+
+#include <linux/types.h>
+#include <linux/list.h>
+#include <asm/atomic.h>
+/*	
+ *	The following structs are used via pointers in ipsec_alg object to
+ *	avoid ipsec_alg.h coupling with freeswan headers, thus simplifying
+ *	module development
+ */
+struct ipsec_sa;
+struct esp;
+
+/**************************************
+ *
+ *	Main registration object 
+ *
+ *************************************/
+#define IPSEC_ALG_VERSION_QUAD(v)	\
+	(v>>24),((v>>16)&0xff),((v>>8)&0xff),(v&0xff)
+/*	
+ *	Main ipsec_alg objects: "OOPrograming wannabe"
+ *	Hierachy (carefully handled with _minimal_ cast'ing):
+ *
+ *      ipsec_alg+
+ *		 +->ipsec_alg_enc  (ixt_alg_type=SADB_EXT_SUPPORTED_ENCRYPT)
+ *		 +->ipsec_alg_auth (ixt_alg_type=SADB_EXT_SUPPORTED_AUTH)
+ */
+
+/***************************************************************
+ *
+ * 	INTERFACE object: struct ipsec_alg
+ *
+ ***************************************************************/
+
+/* 
+ * 	common part for every struct ipsec_alg_*	
+ * 	(sortof poor's man OOP)
+ */
+#define IPSEC_ALG_STRUCT_COMMON \
+	unsigned ixt_version;	/* only allow this version (or 'near')*/ \
+	struct list_head ixt_list;	/* dlinked list */ \
+	struct module *ixt_module;	/* THIS_MODULE */ \
+	unsigned ixt_state;		/* state flags */ \
+	atomic_t ixt_refcnt; 	/* ref. count when pointed from ipsec_sa */ \
+	char ixt_name[16];	/* descriptive short name, eg. "3des" */ \
+	void *ixt_data;		/* private for algo implementation */ \
+	uint8_t  ixt_blocksize;	/* blocksize in bytes */ \
+	\
+	/* THIS IS A COPY of struct supported (lib/pfkey.h)        \
+	 * please keep in sync until we migrate 'supported' stuff  \
+	 * to ipsec_alg \
+	 */ \
+	uint16_t ixt_alg_type;	/* correspond to IPSEC_ALG_{ENCRYPT,AUTH} */ \
+	uint8_t  ixt_alg_id;	/* enc. alg. number, eg. ESP_3DES */ \
+	uint8_t  ixt_ivlen;	/* ivlen in bits, expected to be multiple of 8! */ \
+	uint16_t ixt_keyminbits;/* min. keybits (of entropy) */ \
+	uint16_t ixt_keymaxbits;/* max. keybits (of entropy) */
+
+#define ixt_support ixt_alg_type
+	
+#define IPSEC_ALG_ST_SUPP	0x01
+#define IPSEC_ALG_ST_REGISTERED 0x02
+#define IPSEC_ALG_ST_EXCL	0x04
+struct ipsec_alg {
+	IPSEC_ALG_STRUCT_COMMON
+};
+/* 
+ * 	Note the const in cbc_encrypt IV arg:
+ * 	some ciphers like to toast passed IV (eg. 3DES): make a local IV copy
+ */
+struct ipsec_alg_enc {
+	IPSEC_ALG_STRUCT_COMMON
+	unsigned ixt_e_keylen;		/* raw key length in bytes          */
+	unsigned ixt_e_ctx_size;	/* sa_p->key_e_size */
+	int (*ixt_e_set_key)(struct ipsec_alg_enc *alg, __u8 *key_e, const __u8 *key, size_t keysize);
+	__u8 *(*ixt_e_new_key)(struct ipsec_alg_enc *alg, const __u8 *key, size_t keysize);
+	void (*ixt_e_destroy_key)(struct ipsec_alg_enc *alg, __u8 *key_e);
+	int (*ixt_e_cbc_encrypt)(struct ipsec_alg_enc *alg, __u8 *key_e, __u8 *in, int ilen, const __u8 *iv, int encrypt);
+};
+struct ipsec_alg_auth {
+	IPSEC_ALG_STRUCT_COMMON
+	unsigned ixt_a_keylen;		/* raw key length in bytes          */
+	unsigned ixt_a_ctx_size;	/* sa_p->key_a_size */
+	unsigned ixt_a_authlen;		/* 'natural' auth. hash len (bytes) */
+	int (*ixt_a_hmac_set_key)(struct ipsec_alg_auth *alg, __u8 *key_a, const __u8 *key, int keylen);
+	int (*ixt_a_hmac_hash)(struct ipsec_alg_auth *alg, __u8 *key_a, const __u8 *dat, int len, __u8 *hash, int hashlen);
+};
+/*	
+ *	These are _copies_ of SADB_EXT_SUPPORTED_{AUTH,ENCRYPT}, 
+ *	to avoid header coupling for true constants
+ *	about headers ... "cp is your friend" --Linus
+ */
+#define IPSEC_ALG_TYPE_AUTH	14
+#define IPSEC_ALG_TYPE_ENCRYPT	15
+
+/***************************************************************
+ *
+ * 	INTERFACE for module loading,testing, and unloading
+ *
+ ***************************************************************/
+/*	-  registration calls 	*/
+int register_ipsec_alg(struct ipsec_alg *);
+int unregister_ipsec_alg(struct ipsec_alg *);
+/*	-  optional (simple test) for algos 	*/
+int ipsec_alg_test(unsigned alg_type, unsigned alg_id, int testparm);
+/*	inline wrappers (usefull for type validation */
+static inline int register_ipsec_alg_enc(struct ipsec_alg_enc *ixt) {
+	return register_ipsec_alg((struct ipsec_alg*)ixt);
+}
+static inline int unregister_ipsec_alg_enc(struct ipsec_alg_enc *ixt) {
+	return unregister_ipsec_alg((struct ipsec_alg*)ixt);
+}
+static inline int register_ipsec_alg_auth(struct ipsec_alg_auth *ixt) {
+	return register_ipsec_alg((struct ipsec_alg*)ixt);
+}
+static inline int unregister_ipsec_alg_auth(struct ipsec_alg_auth *ixt) {
+	return unregister_ipsec_alg((struct ipsec_alg*)ixt);
+}
+
+/*****************************************************************
+ *
+ * 	INTERFACE for ENC services: key creation, encrypt function
+ *
+ *****************************************************************/
+
+#define IPSEC_ALG_ENCRYPT 1
+#define IPSEC_ALG_DECRYPT 0
+
+/* 	encryption key context creation function */
+int ipsec_alg_enc_key_create(struct ipsec_sa *sa_p);
+/* 
+ * 	ipsec_alg_esp_encrypt(): encrypt ilen bytes in idat returns
+ * 	0 or ERR<0
+ */
+int ipsec_alg_esp_encrypt(struct ipsec_sa *sa_p, __u8 *idat, int ilen, const __u8 *iv, int action);
+
+/***************************************************************
+ *
+ * 	INTERFACE for AUTH services: key creation, hash functions
+ *
+ ***************************************************************/
+int ipsec_alg_auth_key_create(struct ipsec_sa *sa_p);
+int ipsec_alg_sa_esp_hash(const struct ipsec_sa *sa_p, const __u8 *espp, int len, __u8 *hash, int hashlen) ;
+#define ipsec_alg_sa_esp_update(c,k,l) ipsec_alg_sa_esp_hash(c,k,l,NULL,0)
+
+/* only called from ipsec_init.c */
+int ipsec_alg_init(void);
+
+/* algo module glue for static algos */
+void ipsec_alg_static_init(void);
+typedef int (*ipsec_alg_init_func_t) (void);
+
+/**********************************************
+ *
+ * 	INTERFACE for ipsec_sa init and wipe
+ *
+ **********************************************/
+
+/* returns true if ipsec_sa has ipsec_alg obj attached */
+/* 
+ * Initializes ipsec_sa's ipsec_alg object, using already loaded
+ * proto, authalg, encalg.; links ipsec_alg objects (enc, auth)
+ */
+int ipsec_alg_sa_init(struct ipsec_sa *sa_p);
+/* 
+ * Destroys ipsec_sa's ipsec_alg object
+ * unlinking ipsec_alg objects
+ */
+int ipsec_alg_sa_wipe(struct ipsec_sa *sa_p);
+
+/**********************************************
+ *
+ * 	2.2 backport for some 2.4 useful module stuff
+ *
+ **********************************************/
+#ifdef MODULE
+#ifndef THIS_MODULE
+#define THIS_MODULE          (&__this_module)
+#endif
+#ifndef module_init
+typedef int (*__init_module_func_t)(void);
+typedef void (*__cleanup_module_func_t)(void);
+
+#define module_init(x) \
+        int init_module(void) __attribute__((alias(#x))); \
+        static inline __init_module_func_t __init_module_inline(void) \
+        { return x; }
+#define module_exit(x) \
+        void cleanup_module(void) __attribute__((alias(#x))); \
+        static inline __cleanup_module_func_t __cleanup_module_inline(void) \
+        { return x; }
+#endif
+
+#define IPSEC_ALG_MODULE_INIT( func_name )	\
+	static int func_name(void);		\
+	module_init(func_name);			\
+	static int __init func_name(void)
+#define IPSEC_ALG_MODULE_EXIT( func_name )	\
+	static void func_name(void);		\
+	module_exit(func_name);			\
+	static void __exit func_name(void)
+#else	/* not MODULE */
+#ifndef THIS_MODULE
+#define THIS_MODULE          NULL
+#endif
+/*	
+ *	I only want module_init() magic 
+ *	when algo.c file *is THE MODULE*, in all other
+ *	cases, initialization is called explicitely from ipsec_alg_init()
+ */
+#define IPSEC_ALG_MODULE_INIT( func_name )	\
+	extern int func_name(void);		\
+	int func_name(void)
+#define IPSEC_ALG_MODULE_EXIT( func_name )	\
+	extern void func_name(void);		\
+	void func_name(void)
+#endif
+
+#endif /* IPSEC_ALG_H */
diff --git a/linux/include/freeswan/ipsec_encap.h b/linux/include/freeswan/ipsec_encap.h
new file mode 100644
index 000000000..17cd69269
--- /dev/null
+++ b/linux/include/freeswan/ipsec_encap.h
@@ -0,0 +1,143 @@
+/*
+ * declarations relevant to encapsulation-like operations
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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/gpl.txt>.
+ * 
+ * This program 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 General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_encap.h,v 1.1 2004/03/15 20:35:25 as Exp $
+ */
+
+#ifndef _IPSEC_ENCAP_H_
+
+#define SENT_IP4	16	/* data is two struct in_addr + proto + ports*/
+			/* (2 * sizeof(struct in_addr)) */
+			/* sizeof(struct sockaddr_encap)
+			   - offsetof(struct sockaddr_encap, Sen.Sip4.Src) */
+
+struct sockaddr_encap
+{
+	__u8	sen_len;		/* length */
+	__u8	sen_family;		/* AF_ENCAP */
+	__u16	sen_type;		/* see SENT_* */
+	union
+	{
+		struct			/* SENT_IP4 */
+		{
+			struct in_addr Src;
+			struct in_addr Dst;
+			__u8 Proto;
+			__u16 Sport;
+			__u16 Dport;
+		} Sip4;
+	} Sen;
+};
+
+#define sen_ip_src	Sen.Sip4.Src
+#define sen_ip_dst	Sen.Sip4.Dst
+#define sen_proto       Sen.Sip4.Proto
+#define sen_sport       Sen.Sip4.Sport
+#define sen_dport       Sen.Sip4.Dport
+
+#ifndef AF_ENCAP
+#define AF_ENCAP 26
+#endif /* AF_ENCAP */
+
+#define _IPSEC_ENCAP_H_
+#endif /* _IPSEC_ENCAP_H_ */
+
+/*
+ * $Log: ipsec_encap.h,v $
+ * Revision 1.1  2004/03/15 20:35:25  as
+ * added files from freeswan-2.04-x509-1.5.3
+ *
+ * Revision 1.17  2002/04/24 07:36:46  mcr
+ * Moved from ./klips/net/ipsec/ipsec_encap.h,v
+ *
+ * Revision 1.16  2001/11/26 09:23:47  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.15.2.1  2001/09/25 02:18:54  mcr
+ * 	struct eroute moved to ipsec_eroute.h
+ *
+ * Revision 1.15  2001/09/14 16:58:36  rgb
+ * Added support for storing the first and last packets through a HOLD.
+ *
+ * Revision 1.14  2001/09/08 21:13:31  rgb
+ * Added pfkey ident extension support for ISAKMPd. (NetCelo)
+ *
+ * Revision 1.13  2001/06/14 19:35:08  rgb
+ * Update copyright date.
+ *
+ * Revision 1.12  2001/05/27 06:12:10  rgb
+ * Added structures for pid, packet count and last access time to eroute.
+ * Added packet count to beginning of /proc/net/ipsec_eroute.
+ *
+ * Revision 1.11  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.10  2000/03/22 16:15:36  rgb
+ * Fixed renaming of dev_get (MB).
+ *
+ * Revision 1.9  2000/01/21 06:13:26  rgb
+ * Added a macro for AF_ENCAP
+ *
+ * Revision 1.8  1999/12/31 14:56:55  rgb
+ * MB fix for 2.3 dev-use-count.
+ *
+ * Revision 1.7  1999/11/18 04:09:18  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ *
+ * Revision 1.6  1999/09/24 00:34:13  rgb
+ * Add Marc Boucher's support for 2.3.xx+.
+ *
+ * Revision 1.5  1999/04/11 00:28:57  henry
+ * GPL boilerplate
+ *
+ * Revision 1.4  1999/04/06 04:54:25  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.3  1998/10/19 14:44:28  rgb
+ * Added inclusion of freeswan.h.
+ * sa_id structure implemented and used: now includes protocol.
+ *
+ * Revision 1.2  1998/07/14 18:19:33  rgb
+ * Added #ifdef __KERNEL__ directives to restrict scope of header.
+ *
+ * Revision 1.1  1998/06/18 21:27:44  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.2  1998/04/21 21:29:10  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.1  1998/04/09 03:05:58  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:02  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * Minor cosmetic changes.
+ *
+ * Revision 0.3  1996/11/20 14:35:48  ji
+ * Minor Cleanup.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff --git a/linux/include/freeswan/ipsec_eroute.h b/linux/include/freeswan/ipsec_eroute.h
new file mode 100644
index 000000000..2ee2a10b8
--- /dev/null
+++ b/linux/include/freeswan/ipsec_eroute.h
@@ -0,0 +1,103 @@
+/*
+ * @(#) declarations of eroute structures
+ *
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001  Richard Guy Briggs <rgb@freeswan.org>
+ * Copyright (C) 2001                    Michael Richardson <mcr@freeswan.org>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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/gpl.txt>.
+ * 
+ * This program 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 General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_eroute.h,v 1.1 2004/03/15 20:35:25 as Exp $
+ *
+ * derived from ipsec_encap.h 1.15 on 2001/9/18 by mcr.
+ *
+ */
+
+#ifndef _IPSEC_EROUTE_H_
+
+#include "radij.h"
+#include "ipsec_encap.h"
+#include "ipsec_radij.h"
+
+/*
+ * The "type" is really part of the address as far as the routing
+ * system is concerned. By using only one bit in the type field
+ * for each type, we sort-of make sure that different types of
+ * encapsulation addresses won't be matched against the wrong type.
+ */
+
+/*
+ * An entry in the radix tree 
+ */
+
+struct rjtentry
+{
+	struct	radij_node rd_nodes[2];	/* tree glue, and other values */
+#define	rd_key(r)	((struct sockaddr_encap *)((r)->rd_nodes->rj_key))
+#define	rd_mask(r)	((struct sockaddr_encap *)((r)->rd_nodes->rj_mask))
+	short	rd_flags;
+	short	rd_count;
+};
+
+struct ident
+{
+	__u16	type;	/* identity type */
+	__u64	id;	/* identity id */
+	__u8	len;	/* identity len */
+	caddr_t	data;	/* identity data */
+};
+
+/*
+ * An encapsulation route consists of a pointer to a 
+ * radix tree entry and a SAID (a destination_address/SPI/protocol triple).
+ */
+
+struct eroute
+{
+	struct rjtentry er_rjt;
+	struct sa_id er_said;
+	uint32_t er_pid;
+	uint32_t er_count;
+	uint64_t er_lasttime;
+	struct sockaddr_encap er_eaddr; /* MCR get rid of _encap, it is silly*/
+	struct sockaddr_encap er_emask;
+        struct ident er_ident_s;
+        struct ident er_ident_d;
+	struct sk_buff* er_first;
+	struct sk_buff* er_last;
+};
+
+#define er_dst er_said.dst
+#define er_spi er_said.spi
+
+#define _IPSEC_EROUTE_H_
+#endif /* _IPSEC_EROUTE_H_ */
+
+/*
+ * $Log: ipsec_eroute.h,v $
+ * Revision 1.1  2004/03/15 20:35:25  as
+ * added files from freeswan-2.04-x509-1.5.3
+ *
+ * Revision 1.3  2002/04/24 07:36:46  mcr
+ * Moved from ./klips/net/ipsec/ipsec_eroute.h,v
+ *
+ * Revision 1.2  2001/11/26 09:16:13  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.1.2.1  2001/09/25 02:18:54  mcr
+ * 	struct eroute moved to ipsec_eroute.h
+ *
+ *
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
diff --git a/linux/include/freeswan/ipsec_errs.h b/linux/include/freeswan/ipsec_errs.h
new file mode 100644
index 000000000..f14b5e675
--- /dev/null
+++ b/linux/include/freeswan/ipsec_errs.h
@@ -0,0 +1,53 @@
+/*
+ * @(#) definition of ipsec_errs structure
+ *
+ * Copyright (C) 2001  Richard Guy Briggs  <rgb@freeswan.org>
+ *                 and Michael Richardson  <mcr@freeswan.org>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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/gpl.txt>.
+ * 
+ * This program 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 General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_errs.h,v 1.1 2004/03/15 20:35:25 as Exp $
+ *
+ */
+
+/* 
+ * This file describes the errors/statistics that FreeSWAN collects.
+ *
+ */
+
+struct ipsec_errs {
+	__u32		ips_alg_errs;	       /* number of algorithm errors */
+	__u32		ips_auth_errs;	       /* # of authentication errors */
+	__u32		ips_encsize_errs;      /* # of encryption size errors*/
+	__u32		ips_encpad_errs;       /* # of encryption pad  errors*/
+	__u32		ips_replaywin_errs;    /* # of pkt sequence errors */
+};
+
+/*
+ * $Log: ipsec_errs.h,v $
+ * Revision 1.1  2004/03/15 20:35:25  as
+ * added files from freeswan-2.04-x509-1.5.3
+ *
+ * Revision 1.3  2002/04/24 07:36:46  mcr
+ * Moved from ./klips/net/ipsec/ipsec_errs.h,v
+ *
+ * Revision 1.2  2001/11/26 09:16:13  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.1.2.1  2001/09/25 02:25:57  mcr
+ * 	lifetime structure created and common functions created.
+ *
+ *
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
diff --git a/linux/include/freeswan/ipsec_esp.h b/linux/include/freeswan/ipsec_esp.h
new file mode 100644
index 000000000..c7d5ea15d
--- /dev/null
+++ b/linux/include/freeswan/ipsec_esp.h
@@ -0,0 +1,220 @@
+/*
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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/gpl.txt>.
+ * 
+ * This program 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 General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_esp.h,v 1.2 2004/03/22 21:53:18 as Exp $
+ */
+
+#include "freeswan/ipsec_md5h.h"
+#include "freeswan/ipsec_sha1.h"
+
+#include "crypto/des.h"
+
+#ifndef IPPROTO_ESP
+#define IPPROTO_ESP 50
+#endif /* IPPROTO_ESP */
+
+#define ESP_HEADER_LEN		8	/* 64 bits header (spi+rpl)*/
+
+#define EMT_ESPDESCBC_ULEN	20	/* coming from user mode */
+#define EMT_ESPDES_KMAX		64	/* 512 bit secret key enough? */
+#define EMT_ESPDES_KEY_SZ	8	/* 56 bit secret key with parity = 64 bits */
+#define EMT_ESP3DES_KEY_SZ	24	/* 168 bit secret key with parity = 192 bits */
+#define EMT_ESPDES_IV_SZ	8	/* IV size */
+#define ESP_DESCBC_BLKLEN       8       /* DES-CBC block size */
+
+#define ESP_IV_MAXSZ		16	/* This is _critical_ */
+#define ESP_IV_MAXSZ_INT	(ESP_IV_MAXSZ/sizeof(int))
+
+#define DB_ES_PKTRX	0x0001
+#define DB_ES_PKTRX2	0x0002
+#define DB_ES_IPSA	0x0010
+#define DB_ES_XF	0x0020
+#define DB_ES_IPAD	0x0040
+#define DB_ES_INAU	0x0080
+#define DB_ES_OINFO	0x0100
+#define DB_ES_OINFO2	0x0200
+#define DB_ES_OH	0x0400
+#define DB_ES_REPLAY	0x0800
+
+#ifdef __KERNEL__
+struct des_eks {
+	des_key_schedule ks;
+};
+
+extern struct inet_protocol esp_protocol;
+
+struct options;
+
+extern int
+esp_rcv(struct sk_buff *skb,
+	struct device *dev,
+	struct options *opt, 
+	__u32 daddr,
+	unsigned short len,
+	__u32 saddr,
+	int redo,
+	struct inet_protocol *protocol);
+
+/* Only for 64 bits IVs, eg. ESP_3DES :P */
+struct esphdr
+{
+	__u32	esp_spi;		/* Security Parameters Index */
+        __u32   esp_rpl;                /* Replay counter */
+	__u8	esp_iv[8];		/* iv */
+};
+
+#ifdef CONFIG_IPSEC_DEBUG
+extern int debug_esp;
+#endif /* CONFIG_IPSEC_DEBUG */
+#endif /* __KERNEL__ */
+
+/*
+ * $Log: ipsec_esp.h,v $
+ * Revision 1.2  2004/03/22 21:53:18  as
+ * merged alg-0.8.1 branch with HEAD
+ *
+ * Revision 1.1.4.1  2004/03/16 09:48:18  as
+ * alg-0.8.1rc12 patch merged
+ *
+ * Revision 1.1  2004/03/15 20:35:25  as
+ * added files from freeswan-2.04-x509-1.5.3
+ *
+ * Revision 1.21  2003/02/06 02:21:34  rgb
+ *
+ * Moved "struct auth_alg" from ipsec_rcv.c to ipsec_ah.h .
+ * Changed "struct ah" to "struct ahhdr" and "struct esp" to "struct esphdr".
+ * Removed "#ifdef INBOUND_POLICY_CHECK_eroute" dead code.
+ *
+ * Revision 1.20  2002/05/14 02:37:02  rgb
+ * Change reference from _TDB to _IPSA.
+ *
+ * Revision 1.19  2002/04/24 07:55:32  mcr
+ * 	#include patches and Makefiles for post-reorg compilation.
+ *
+ * Revision 1.18  2002/04/24 07:36:46  mcr
+ * Moved from ./klips/net/ipsec/ipsec_esp.h,v
+ *
+ * Revision 1.17  2002/02/20 01:27:07  rgb
+ * Ditched a pile of structs only used by the old Netlink interface.
+ *
+ * Revision 1.16  2001/12/11 02:35:57  rgb
+ * Change "struct net_device" to "struct device" for 2.2 compatibility.
+ *
+ * Revision 1.15  2001/11/26 09:23:48  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.14.2.3  2001/10/23 04:16:42  mcr
+ * 	get definition of des_key_schedule from des.h
+ *
+ * Revision 1.14.2.2  2001/10/22 20:33:13  mcr
+ * 	use "des_key_schedule" structure instead of cooking our own.
+ *
+ * Revision 1.14.2.1  2001/09/25 02:18:25  mcr
+ * 	replace "struct device" with "struct netdevice"
+ *
+ * Revision 1.14  2001/06/14 19:35:08  rgb
+ * Update copyright date.
+ *
+ * Revision 1.13  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.12  2000/08/01 14:51:50  rgb
+ * Removed _all_ remaining traces of DES.
+ *
+ * Revision 1.11  2000/01/10 16:36:20  rgb
+ * Ditch last of EME option flags, including initiator.
+ *
+ * Revision 1.10  1999/12/07 18:16:22  rgb
+ * Fixed comments at end of #endif lines.
+ *
+ * Revision 1.9  1999/04/11 00:28:57  henry
+ * GPL boilerplate
+ *
+ * Revision 1.8  1999/04/06 04:54:25  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.7  1999/01/26 02:06:00  rgb
+ * Removed CONFIG_IPSEC_ALGO_SWITCH macro.
+ *
+ * Revision 1.6  1999/01/22 15:22:05  rgb
+ * Re-enable IV in the espblkrply_edata structure to avoid breaking pluto
+ * until pluto can be fixed properly.
+ *
+ * Revision 1.5  1999/01/22 06:18:16  rgb
+ * Updated macro comments.
+ * Added key schedule types to support algorithm switch code.
+ *
+ * Revision 1.4  1998/08/12 00:07:32  rgb
+ * Added data structures for new xforms: null, {,3}dessha1.
+ *
+ * Revision 1.3  1998/07/14 15:57:01  rgb
+ * Add #ifdef __KERNEL__ to protect kernel-only structures.
+ *
+ * Revision 1.2  1998/06/25 19:33:46  rgb
+ * Add prototype for protocol receive function.
+ * Rearrange for more logical layout.
+ *
+ * Revision 1.1  1998/06/18 21:27:45  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.6  1998/06/05 02:28:08  rgb
+ * Minor comment fix.
+ *
+ * Revision 1.5  1998/05/27 22:34:00  rgb
+ * Changed structures to accomodate key separation.
+ *
+ * Revision 1.4  1998/05/18 22:28:43  rgb
+ * Disable key printing facilities from /proc/net/ipsec_*.
+ *
+ * Revision 1.3  1998/04/21 21:29:07  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.2  1998/04/12 22:03:20  rgb
+ * Updated ESP-3DES-HMAC-MD5-96,
+ * 	ESP-DES-HMAC-MD5-96,
+ * 	AH-HMAC-MD5-96,
+ * 	AH-HMAC-SHA1-96 since Henry started freeswan cvs repository
+ * from old standards (RFC182[5-9] to new (as of March 1998) drafts.
+ *
+ * Fixed eroute references in /proc/net/ipsec*.
+ *
+ * Started to patch module unloading memory leaks in ipsec_netlink and
+ * radij tree unloading.
+ *
+ * Revision 1.1  1998/04/09 03:06:00  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:02  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.5  1997/06/03 04:24:48  ji
+ * Added ESP-3DES-MD5-96 transform.
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * Added definitions for new ESP transforms.
+ *
+ * Revision 0.3  1996/11/20 14:35:48  ji
+ * Minor Cleanup.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff --git a/linux/include/freeswan/ipsec_ipe4.h b/linux/include/freeswan/ipsec_ipe4.h
new file mode 100644
index 000000000..73b6ae899
--- /dev/null
+++ b/linux/include/freeswan/ipsec_ipe4.h
@@ -0,0 +1,68 @@
+/*
+ * IP-in-IP Header declarations
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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/gpl.txt>.
+ * 
+ * This program 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 General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_ipe4.h,v 1.1 2004/03/15 20:35:25 as Exp $
+ */
+
+/* The packet header is an IP header! */
+
+struct ipe4_xdata			/* transform table data */
+{
+	struct in_addr	i4_src;
+	struct in_addr	i4_dst;
+};
+
+#define EMT_IPE4_ULEN	8	/* coming from user mode */
+ 
+
+/*
+ * $Log: ipsec_ipe4.h,v $
+ * Revision 1.1  2004/03/15 20:35:25  as
+ * added files from freeswan-2.04-x509-1.5.3
+ *
+ * Revision 1.5  2002/04/24 07:36:46  mcr
+ * Moved from ./klips/net/ipsec/ipsec_ipe4.h,v
+ *
+ * Revision 1.4  2001/06/14 19:35:08  rgb
+ * Update copyright date.
+ *
+ * Revision 1.3  1999/04/11 00:28:57  henry
+ * GPL boilerplate
+ *
+ * Revision 1.2  1999/04/06 04:54:25  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.1  1998/06/18 21:27:47  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.1  1998/04/09 03:06:07  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:03  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:48:53  ji
+ * Release update only.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff --git a/linux/include/freeswan/ipsec_kversion.h b/linux/include/freeswan/ipsec_kversion.h
new file mode 100644
index 000000000..7bf56ac7f
--- /dev/null
+++ b/linux/include/freeswan/ipsec_kversion.h
@@ -0,0 +1,227 @@
+#ifndef _FREESWAN_KVERSIONS_H
+/*
+ * header file for FreeS/WAN library functions
+ * Copyright (C) 1998, 1999, 2000  Henry Spencer.
+ * Copyright (C) 1999, 2000, 2001  Richard Guy Briggs
+ * 
+ * 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: ipsec_kversion.h,v 1.1 2004/03/15 20:35:25 as Exp $
+ */
+#define	_FREESWAN_KVERSIONS_H	/* seen it, no need to see it again */
+
+/*
+ * this file contains a series of atomic defines that depend upon
+ * kernel version numbers. The kernel versions are arranged
+ * in version-order number (which is often not chronological)
+ * and each clause enables or disables a feature.
+ */
+
+/*
+ * First, assorted kernel-version-dependent trickery.
+ */
+#include <linux/version.h>
+#ifndef KERNEL_VERSION
+#define KERNEL_VERSION(x,y,z) (((x)<<16)+((y)<<8)+(z))
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,0)
+#define HEADER_CACHE_BIND_21
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,0)
+#define SPINLOCK
+#define PROC_FS_21
+#define NETLINK_SOCK
+#define NET_21
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,19)
+#define net_device_stats enet_statistics
+#endif                                                                         
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
+#define SPINLOCK_23
+#define NETDEV_23
+#  ifndef CONFIG_IP_ALIAS
+#  define CONFIG_IP_ALIAS
+#  endif
+#include <linux/socket.h>
+#include <linux/skbuff.h>
+#include <linux/netlink.h>
+#  ifdef NETLINK_XFRM
+#  define NETDEV_25
+#  endif
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,25)
+#define PROC_FS_2325
+#undef  PROC_FS_21
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,30)
+#define PROC_NO_DUMMY
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,35)
+#define SKB_COPY_EXPAND
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,37)
+#define IP_SELECT_IDENT
+#endif
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,50)) && defined(CONFIG_NETFILTER)
+#define SKB_RESET_NFCT
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,2)
+#define IP_SELECT_IDENT_NEW
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,4)
+#define IPH_is_SKB_PULLED
+#define SKB_COW_NEW
+#define PROTO_HANDLER_SINGLE_PARM
+#define IP_FRAGMENT_LINEARIZE 1
+#else /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,4) */
+#  ifdef REDHAT_BOGOSITY
+#  define IP_SELECT_IDENT_NEW
+#  define IPH_is_SKB_PULLED
+#  define SKB_COW_NEW
+#  define PROTO_HANDLER_SINGLE_PARM
+#  endif /* REDHAT_BOGOSITY */
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,4) */
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,9)
+#define MALLOC_SLAB
+#define LINUX_KERNEL_HAS_SNPRINTF
+#endif                                                                         
+
+#ifdef NET_21
+#  include <linux/in6.h>
+#else
+     /* old kernel in.h has some IPv6 stuff, but not quite enough */
+#  define	s6_addr16	s6_addr
+#  define	AF_INET6	10
+#  define uint8_t __u8
+#  define uint16_t __u16 
+#  define uint32_t __u32 
+#  define uint64_t __u64 
+#endif
+
+#ifdef NET_21
+# define ipsec_kfree_skb(a) kfree_skb(a)
+#else /* NET_21 */
+# define ipsec_kfree_skb(a) kfree_skb(a, FREE_WRITE)
+#endif /* NET_21 */
+
+#ifdef NETDEV_23
+# define device net_device
+# define ipsec_dev_get dev_get_by_name
+# define __ipsec_dev_get __dev_get_by_name
+# define ipsec_dev_put(x) dev_put(x)
+# define __ipsec_dev_put(x) __dev_put(x)
+# define ipsec_dev_hold(x) dev_hold(x)
+#else /* NETDEV_23 */
+# define ipsec_dev_get dev_get
+# define __ipsec_dev_put(x) 
+# define ipsec_dev_put(x)
+# define ipsec_dev_hold(x) 
+#endif /* NETDEV_23 */
+
+#ifndef SPINLOCK
+#  include <linux/bios32.h>
+     /* simulate spin locks and read/write locks */
+     typedef struct {
+       volatile char lock;
+     } spinlock_t;
+
+     typedef struct {
+       volatile unsigned int lock;
+     } rwlock_t;                                                                     
+
+#  define spin_lock_init(x) { (x)->lock = 0;}
+#  define rw_lock_init(x) { (x)->lock = 0; }
+
+#  define spin_lock(x) { while ((x)->lock) barrier(); (x)->lock=1;}
+#  define spin_lock_irq(x) { cli(); spin_lock(x);}
+#  define spin_lock_irqsave(x,flags) { save_flags(flags); spin_lock_irq(x);}
+
+#  define spin_unlock(x) { (x)->lock=0;}
+#  define spin_unlock_irq(x) { spin_unlock(x); sti();}
+#  define spin_unlock_irqrestore(x,flags) { spin_unlock(x); restore_flags(flags);}
+
+#  define read_lock(x) spin_lock(x)
+#  define read_lock_irq(x) spin_lock_irq(x)
+#  define read_lock_irqsave(x,flags) spin_lock_irqsave(x,flags)
+
+#  define read_unlock(x) spin_unlock(x)
+#  define read_unlock_irq(x) spin_unlock_irq(x)
+#  define read_unlock_irqrestore(x,flags) spin_unlock_irqrestore(x,flags)
+
+#  define write_lock(x) spin_lock(x)
+#  define write_lock_irq(x) spin_lock_irq(x)
+#  define write_lock_irqsave(x,flags) spin_lock_irqsave(x,flags)
+
+#  define write_unlock(x) spin_unlock(x)
+#  define write_unlock_irq(x) spin_unlock_irq(x)
+#  define write_unlock_irqrestore(x,flags) spin_unlock_irqrestore(x,flags)
+#endif /* !SPINLOCK */
+
+#ifndef SPINLOCK_23
+#  define spin_lock_bh(x)  spin_lock_irq(x)
+#  define spin_unlock_bh(x)  spin_unlock_irq(x)
+
+#  define read_lock_bh(x)  read_lock_irq(x)
+#  define read_unlock_bh(x)  read_unlock_irq(x)
+
+#  define write_lock_bh(x)  write_lock_irq(x)
+#  define write_unlock_bh(x)  write_unlock_irq(x)
+#endif /* !SPINLOCK_23 */
+
+#endif /* _FREESWAN_KVERSIONS_H */
+
+/*
+ * $Log: ipsec_kversion.h,v $
+ * Revision 1.1  2004/03/15 20:35:25  as
+ * added files from freeswan-2.04-x509-1.5.3
+ *
+ * Revision 1.7  2003/07/31 22:48:08  mcr
+ * 	derive NET25-ness from presence of NETLINK_XFRM macro.
+ *
+ * Revision 1.6  2003/06/24 20:22:32  mcr
+ * 	added new global: ipsecdevices[] so that we can keep track of
+ * 	the ipsecX devices. They will be referenced with dev_hold(),
+ * 	so 2.2 may need this as well.
+ *
+ * Revision 1.5  2003/04/03 17:38:09  rgb
+ * Centralised ipsec_kfree_skb and ipsec_dev_{get,put}.
+ *
+ * Revision 1.4  2002/04/24 07:36:46  mcr
+ * Moved from ./klips/net/ipsec/ipsec_kversion.h,v
+ *
+ * Revision 1.3  2002/04/12 03:21:17  mcr
+ * 	three parameter version of ip_select_ident appears first
+ * 	in 2.4.2 (RH7.1) not 2.4.4.
+ *
+ * Revision 1.2  2002/03/08 21:35:22  rgb
+ * Defined LINUX_KERNEL_HAS_SNPRINTF to shut up compiler warnings after
+ * 2.4.9.  (Andreas Piesk).
+ *
+ * Revision 1.1  2002/01/29 02:11:42  mcr
+ * 	removal of kversions.h - sources that needed it now use ipsec_param.h.
+ * 	updating of IPv6 structures to match latest in6.h version.
+ * 	removed dead code from freeswan.h that also duplicated kversions.h
+ * 	code.
+ *
+ *
+ */
diff --git a/linux/include/freeswan/ipsec_life.h b/linux/include/freeswan/ipsec_life.h
new file mode 100644
index 000000000..4cf270272
--- /dev/null
+++ b/linux/include/freeswan/ipsec_life.h
@@ -0,0 +1,112 @@
+/*
+ * Definitions relevant to IPSEC lifetimes
+ * Copyright (C) 2001  Richard Guy Briggs  <rgb@freeswan.org>
+ *                 and Michael Richardson  <mcr@freeswan.org>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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/gpl.txt>.
+ * 
+ * This program 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 General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_life.h,v 1.1 2004/03/15 20:35:25 as Exp $
+ *
+ * This file derived from ipsec_xform.h on 2001/9/18 by mcr.
+ *
+ */
+
+/* 
+ * This file describes the book keeping fields for the 
+ *   IPsec Security Association Structure. ("ipsec_sa")
+ *
+ * This structure is never allocated directly by kernel code,
+ * (it is always a static/auto or is part of a structure)
+ * so it does not have a reference count.
+ *
+ */
+
+#ifndef _IPSEC_LIFE_H_
+
+/*
+ *  _count is total count.
+ *  _hard is hard limit (kill SA after this number)
+ *  _soft is soft limit (try to renew SA after this number)
+ *  _last is used in some special cases.
+ *
+ */
+
+struct ipsec_lifetime64
+{
+	__u64           ipl_count;
+	__u64           ipl_soft;
+	__u64           ipl_hard;
+	__u64           ipl_last;  
+};
+
+struct ipsec_lifetimes
+{
+	/* number of bytes processed */
+	struct ipsec_lifetime64 ipl_bytes;
+
+	/* number of packets processed */
+	struct ipsec_lifetime64 ipl_packets;
+
+	/* time since SA was added */
+	struct ipsec_lifetime64 ipl_addtime;
+
+	/* time since SA was first used */
+	struct ipsec_lifetime64 ipl_usetime;
+
+	/* from rfc2367:  
+         *         For CURRENT, the number of different connections,
+         *         endpoints, or flows that the association has been
+         *          allocated towards. For HARD and SOFT, the number of
+         *          these the association may be allocated towards
+         *          before it expires. The concept of a connection,
+         *          flow, or endpoint is system specific.
+	 *
+	 * mcr(2001-9-18) it is unclear what purpose these serve for FreeSWAN.
+	 *          They are maintained for PF_KEY compatibility. 
+	 */
+	struct ipsec_lifetime64 ipl_allocations;
+};
+
+enum ipsec_life_alive {
+	ipsec_life_harddied = -1,
+	ipsec_life_softdied = 0,
+	ipsec_life_okay     = 1
+};
+
+enum ipsec_life_type {
+	ipsec_life_timebased = 1,
+	ipsec_life_countbased= 0
+};
+
+#define _IPSEC_LIFE_H_
+#endif /* _IPSEC_LIFE_H_ */
+
+
+/*
+ * $Log: ipsec_life.h,v $
+ * Revision 1.1  2004/03/15 20:35:25  as
+ * added files from freeswan-2.04-x509-1.5.3
+ *
+ * Revision 1.3  2002/04/24 07:36:46  mcr
+ * Moved from ./klips/net/ipsec/ipsec_life.h,v
+ *
+ * Revision 1.2  2001/11/26 09:16:14  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.1.2.1  2001/09/25 02:25:58  mcr
+ * 	lifetime structure created and common functions created.
+ *
+ *
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
diff --git a/linux/include/freeswan/ipsec_md5h.h b/linux/include/freeswan/ipsec_md5h.h
new file mode 100644
index 000000000..3fc54bc82
--- /dev/null
+++ b/linux/include/freeswan/ipsec_md5h.h
@@ -0,0 +1,140 @@
+/*
+ * RCSID $Id: ipsec_md5h.h,v 1.1 2004/03/15 20:35:25 as Exp $
+ */
+
+/*
+ * The rest of this file is Copyright RSA DSI. See the following comments
+ * for the full Copyright notice.
+ */
+
+#ifndef _IPSEC_MD5H_H_
+#define _IPSEC_MD5H_H_
+
+/* GLOBAL.H - RSAREF types and constants
+ */
+
+/* PROTOTYPES should be set to one if and only if the compiler supports
+     function argument prototyping.
+   The following makes PROTOTYPES default to 0 if it has not already
+     been defined with C compiler flags.
+ */
+#ifndef PROTOTYPES
+#define PROTOTYPES 1
+#endif /* !PROTOTYPES */
+
+/* POINTER defines a generic pointer type */
+typedef __u8 *POINTER;
+
+/* UINT2 defines a two byte word */
+typedef __u16 UINT2;
+
+/* UINT4 defines a four byte word */
+typedef __u32 UINT4;
+
+/* PROTO_LIST is defined depending on how PROTOTYPES is defined above.
+   If using PROTOTYPES, then PROTO_LIST returns the list, otherwise it
+     returns an empty list.
+ */
+
+#if PROTOTYPES
+#define PROTO_LIST(list) list
+#else /* PROTOTYPES */
+#define PROTO_LIST(list) ()
+#endif /* PROTOTYPES */
+
+
+/* MD5.H - header file for MD5C.C
+ */
+
+/* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
+rights reserved.
+
+License to copy and use this software is granted provided that it
+is identified as the "RSA Data Security, Inc. MD5 Message-Digest
+Algorithm" in all material mentioning or referencing this software
+or this function.
+
+License is also granted to make and use derivative works provided
+that such works are identified as "derived from the RSA Data
+Security, Inc. MD5 Message-Digest Algorithm" in all material
+mentioning or referencing the derived work.
+
+RSA Data Security, Inc. makes no representations concerning either
+the merchantability of this software or the suitability of this
+software for any particular purpose. It is provided "as is"
+without express or implied warranty of any kind.
+
+These notices must be retained in any copies of any part of this
+documentation and/or software.
+ */
+
+/* MD5 context. */
+typedef struct {
+  UINT4 state[4];                                   /* state (ABCD) */
+  UINT4 count[2];        /* number of bits, modulo 2^64 (lsb first) */
+  unsigned char buffer[64];                         /* input buffer */
+} MD5_CTX;
+
+void MD5Init PROTO_LIST ((void *));
+void MD5Update PROTO_LIST
+  ((void *, unsigned char *, __u32));
+void MD5Final PROTO_LIST ((unsigned char [16], void *));
+ 
+#endif /* _IPSEC_MD5H_H_ */
+
+/*
+ * $Log: ipsec_md5h.h,v $
+ * Revision 1.1  2004/03/15 20:35:25  as
+ * added files from freeswan-2.04-x509-1.5.3
+ *
+ * Revision 1.8  2002/09/10 01:45:09  mcr
+ * 	changed type of MD5_CTX and SHA1_CTX to void * so that
+ * 	the function prototypes would match, and could be placed
+ * 	into a pointer to a function.
+ *
+ * Revision 1.7  2002/04/24 07:36:46  mcr
+ * Moved from ./klips/net/ipsec/ipsec_md5h.h,v
+ *
+ * Revision 1.6  1999/12/13 13:59:13  rgb
+ * Quick fix to argument size to Update bugs.
+ *
+ * Revision 1.5  1999/12/07 18:16:23  rgb
+ * Fixed comments at end of #endif lines.
+ *
+ * Revision 1.4  1999/04/06 04:54:26  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.3  1999/01/22 06:19:58  rgb
+ * 64-bit clean-up.
+ *
+ * Revision 1.2  1998/11/30 13:22:54  rgb
+ * Rationalised all the klips kernel file headers.  They are much shorter
+ * now and won't conflict under RH5.2.
+ *
+ * Revision 1.1  1998/06/18 21:27:48  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.2  1998/04/23 20:54:03  rgb
+ * Fixed md5 and sha1 include file nesting issues, to be cleaned up when
+ * verified.
+ *
+ * Revision 1.1  1998/04/09 03:04:21  henry
+ * sources moved up from linux/net/ipsec
+ * these two include files modified not to include others except in kernel
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:03  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:48:53  ji
+ * Release update only.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff --git a/linux/include/freeswan/ipsec_param.h b/linux/include/freeswan/ipsec_param.h
new file mode 100644
index 000000000..02b36e6a3
--- /dev/null
+++ b/linux/include/freeswan/ipsec_param.h
@@ -0,0 +1,226 @@
+/*
+ * @(#) FreeSWAN tunable paramaters
+ *
+ * Copyright (C) 2001  Richard Guy Briggs  <rgb@freeswan.org>
+ *                 and Michael Richardson  <mcr@freeswan.org>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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/gpl.txt>.
+ * 
+ * This program 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 General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_param.h,v 1.2 2004/04/28 08:07:11 as Exp $
+ *
+ */
+
+/* 
+ * This file provides a set of #define's which may be tuned by various
+ * people/configurations. It keeps all compile-time tunables in one place.
+ *
+ * This file should be included before all other IPsec kernel-only files.
+ *
+ */
+
+#ifndef _IPSEC_PARAM_H_
+
+#ifdef __KERNEL__
+#include "ipsec_kversion.h"
+
+/* Set number of ipsecX virtual devices here. */
+/* This must be < exp(field width of IPSEC_DEV_FORMAT) */
+/* It must also be reasonable so as not to overload the memory and CPU */
+/* constraints of the host. */
+#define IPSEC_NUM_IF	4
+/* The field width must be < IF_NAM_SIZ - strlen("ipsec") - 1. */
+/* With "ipsec" being 5 characters, that means 10 is the max field width */
+/* but machine memory and CPU constraints are not likely to tollerate */
+/* more than 3 digits.  The default is one digit. */
+/* Update: userland scripts get upset if they can't find "ipsec0", so */
+/* for now, no "0"-padding should be used (which would have been helpful */
+/* to make text-searches work */
+#define IPSEC_DEV_FORMAT "ipsec%d"
+/* For, say, 500 virtual ipsec devices, I would recommend: */
+/* #define IPSEC_NUM_IF	500 */
+/* #define IPSEC_DEV_FORMAT "ipsec%03d" */
+/* Note that the "interfaces=" line in /etc/ipsec.conf would be, um, challenging. */
+
+/* use dynamic ipsecX device allocation */
+#ifndef CONFIG_IPSEC_DYNDEV
+#define CONFIG_IPSEC_DYNDEV 1
+#endif /* CONFIG_IPSEC_DYNDEV */
+
+
+#ifdef CONFIG_IPSEC_BIGGATE
+# define SADB_HASHMOD   8069
+#else /* CONFIG_IPSEC_BIGGATE */
+# define SADB_HASHMOD	257
+#endif /* CONFIG_IPSEC_BIGGATE */
+#endif /* __KERNEL__ */
+
+/*
+ * This is for the SA reference table. This number is related to the
+ * maximum number of SAs that KLIPS can concurrently deal with, plus enough
+ * space for keeping expired SAs around.
+ *
+ * TABLE_MAX_WIDTH is the number of bits that we will use.
+ * MAIN_TABLE_WIDTH is the number of bits used for the primary index table.
+ *
+ */
+#ifndef IPSEC_SA_REF_TABLE_IDX_WIDTH
+# define IPSEC_SA_REF_TABLE_IDX_WIDTH 16
+#endif
+
+#ifndef IPSEC_SA_REF_MAINTABLE_IDX_WIDTH 
+# define IPSEC_SA_REF_MAINTABLE_IDX_WIDTH 4 
+#endif
+
+#ifndef IPSEC_SA_REF_FREELIST_NUM_ENTRIES 
+# define IPSEC_SA_REF_FREELIST_NUM_ENTRIES 256
+#endif
+
+#ifndef IPSEC_SA_REF_CODE 
+# define IPSEC_SA_REF_CODE 1 
+#endif
+
+#ifdef __KERNEL__
+/* This is defined for 2.4, but not 2.2.... */
+#ifndef ARPHRD_VOID
+# define ARPHRD_VOID 0xFFFF
+#endif
+
+/*
+ * Worry about PROC_FS stuff
+ */
+#if defined(PROC_FS_2325)
+/* kernel 2.4 */
+# define IPSEC_PROC_LAST_ARG ,int *eof,void *data
+# define IPSEC_PROCFS_DEBUG_NO_STATIC
+# define IPSEC_PROC_SUBDIRS
+#else
+/* kernel <2.4 */
+# define IPSEC_PROCFS_DEBUG_NO_STATIC DEBUG_NO_STATIC
+
+# ifndef PROC_NO_DUMMY
+#  define IPSEC_PROC_LAST_ARG , int dummy
+# else
+#  define IPSEC_PROC_LAST_ARG
+# endif /* !PROC_NO_DUMMY */
+#endif /* PROC_FS_2325 */
+
+#if !defined(LINUX_KERNEL_HAS_SNPRINTF)
+/* GNU CPP specific! */
+# define snprintf(buf, len, fmt...) sprintf(buf, ##fmt)
+#endif /* !LINUX_KERNEL_HAS_SNPRINTF */
+
+#ifdef SPINLOCK
+# ifdef SPINLOCK_23
+#  include <linux/spinlock.h> /* *lock* */
+# else /* SPINLOCK_23 */
+#  include <asm/spinlock.h> /* *lock* */
+# endif /* SPINLOCK_23 */
+#endif /* SPINLOCK */
+
+#ifndef KLIPS_FIXES_DES_PARITY
+# define KLIPS_FIXES_DES_PARITY 1
+#endif /* !KLIPS_FIXES_DES_PARITY */
+
+/* we don't really want to print these unless there are really big problems */
+#ifndef KLIPS_DIVULGE_CYPHER_KEY
+# define KLIPS_DIVULGE_CYPHER_KEY 0
+#endif /* !KLIPS_DIVULGE_CYPHER_KEY */
+
+#ifndef KLIPS_DIVULGE_HMAC_KEY
+# define KLIPS_DIVULGE_HMAC_KEY 0
+#endif /* !KLIPS_DIVULGE_HMAC_KEY */
+
+#ifndef IPSEC_DISALLOW_IPOPTIONS
+# define IPSEC_DISALLOW_IPOPTIONS 1
+#endif /* !KLIPS_DIVULGE_HMAC_KEY */
+
+/* extra toggles for regression testing */
+#ifdef CONFIG_IPSEC_REGRESS
+
+/* 
+ * should pfkey_acquire() become 100% lossy?
+ *
+ */
+extern int sysctl_ipsec_regress_pfkey_lossage;
+#ifndef KLIPS_PFKEY_ACQUIRE_LOSSAGE
+# ifdef CONFIG_IPSEC_PFKEY_ACQUIRE_LOSSAGE
+#  define KLIPS_PFKEY_ACQUIRE_LOSSAGE 100
+# else /* CONFIG_IPSEC_PFKEY_ACQUIRE_LOSSAGE */
+/* not by default! */
+#  define KLIPS_PFKEY_ACQUIRE_LOSSAGE 0
+# endif /* CONFIG_IPSEC_PFKEY_ACQUIRE_LOSSAGE */
+#endif /* KLIPS_PFKEY_ACQUIRE_LOSSAGE */
+
+#endif /* CONFIG_IPSEC_REGRESS */
+
+/*
+ * debugging routines.
+ */
+#ifdef CONFIG_IPSEC_DEBUG
+extern void ipsec_print_ip(struct iphdr *ip);
+
+	#define KLIPS_PRINT(flag, format, args...) \
+		((flag) ? printk(KERN_INFO format , ## args) : 0)
+	#define KLIPS_PRINTMORE(flag, format, args...) \
+		((flag) ? printk(format , ## args) : 0)
+	#define KLIPS_IP_PRINT(flag, ip) \
+		((flag) ? ipsec_print_ip(ip) : 0)
+#else /* CONFIG_IPSEC_DEBUG */
+	#define KLIPS_PRINT(flag, format, args...) do ; while(0)
+	#define KLIPS_PRINTMORE(flag, format, args...) do ; while(0)
+	#define KLIPS_IP_PRINT(flag, ip) do ; while(0)
+#endif /* CONFIG_IPSEC_DEBUG */
+
+
+/* 
+ * Stupid kernel API differences in APIs. Not only do some
+ * kernels not have ip_select_ident, but some have differing APIs,
+ * and SuSE has one with one parameter, but no way of checking to
+ * see what is really what.
+ */
+
+#ifdef SUSE_LINUX_2_4_19_IS_STUPID
+#define KLIPS_IP_SELECT_IDENT(iph, skb) ip_select_ident(iph)
+#else
+
+/* simplest case, nothing */
+#if !defined(IP_SELECT_IDENT)
+#define KLIPS_IP_SELECT_IDENT(iph, skb)  do { iph->id = htons(ip_id_count++); } while(0)
+#endif
+
+/* kernels > 2.3.37-ish */
+#if defined(IP_SELECT_IDENT) && !defined(IP_SELECT_IDENT_NEW)
+#define KLIPS_IP_SELECT_IDENT(iph, skb) ip_select_ident(iph, skb->dst)
+#endif
+
+/* kernels > 2.4.2 */
+#if defined(IP_SELECT_IDENT) && defined(IP_SELECT_IDENT_NEW)
+#define KLIPS_IP_SELECT_IDENT(iph, skb) ip_select_ident(iph, skb->dst, NULL)
+#endif
+
+#endif /* SUSE_LINUX_2_4_19_IS_STUPID */
+
+/*
+ * make klips fail test:east-espiv-01.
+ * exploit is at testing/attacks/espiv
+ *
+ */
+#define KLIPS_IMPAIRMENT_ESPIV_CBC_ATTACK 0
+
+
+/* IP_FRAGMENT_LINEARIZE is set in freeswan.h if Kernel > 2.4.4 */
+#ifndef IP_FRAGMENT_LINEARIZE
+# define IP_FRAGMENT_LINEARIZE 0
+#endif /* IP_FRAGMENT_LINEARIZE */
+#endif /* __KERNEL__ */
+
+#define _IPSEC_PARAM_H_
+#endif /* _IPSEC_PARAM_H_ */
diff --git a/linux/include/freeswan/ipsec_policy.h b/linux/include/freeswan/ipsec_policy.h
new file mode 100644
index 000000000..90b58ad52
--- /dev/null
+++ b/linux/include/freeswan/ipsec_policy.h
@@ -0,0 +1,225 @@
+#ifndef _IPSEC_POLICY_H
+/*
+ * policy interface file between pluto and applications
+ * Copyright (C) 2003              Michael Richardson <mcr@freeswan.org>
+ * 
+ * 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: ipsec_policy.h,v 1.4 2004/10/04 22:43:56 as Exp $
+ */
+#define	_IPSEC_POLICY_H 	/* seen it, no need to see it again */
+
+
+/*
+ * this file defines an interface between an application (or rather an
+ * application library) and a key/policy daemon. It provides for inquiries
+ * as to the current state of a connected socket, as well as for general
+ * questions.
+ *
+ * In general, the interface is defined as a series of functional interfaces,
+ * and the policy messages should be internal. However, because this is in
+ * fact an ABI between pieces of the system that may get compiled and revised
+ * seperately, this ABI must be public and revision controlled.
+ *
+ * It is expected that the daemon will always support previous versions.
+ */
+
+#define IPSEC_POLICY_MSG_REVISION (unsigned)200305061
+
+enum ipsec_policy_command {
+  IPSEC_CMD_QUERY_FD       = 1,
+  IPSEC_CMD_QUERY_HOSTPAIR = 2,
+  IPSEC_CMD_QUERY_DSTONLY  = 3,
+};
+
+struct ipsec_policy_msg_head {
+  u_int32_t ipm_version;
+  u_int32_t ipm_msg_len;  
+  u_int32_t ipm_msg_type;
+  u_int32_t ipm_msg_seq;
+};
+
+enum ipsec_privacy_quality {
+  IPSEC_PRIVACY_NONE     = 0,
+  IPSEC_PRIVACY_INTEGRAL = 4,   /* not private at all. AH-like */
+  IPSEC_PRIVACY_UNKNOWN  = 8,   /* something is claimed, but details unavail */
+  IPSEC_PRIVACY_ROT13    = 12,  /* trivially breakable, i.e. 1DES */
+  IPSEC_PRIVACY_GAK      = 16,  /* known eavesdroppers */
+  IPSEC_PRIVACY_PRIVATE  = 32,  /* secure for at least a decade */
+  IPSEC_PRIVACY_STRONG   = 64,  /* ridiculously secure */
+  IPSEC_PRIVACY_TORTOISE = 192, /* even stronger, but very slow */
+  IPSEC_PRIVACY_OTP      = 224, /* some kind of *true* one time pad */
+};
+
+enum ipsec_bandwidth_quality {
+  IPSEC_QOS_UNKNOWN = 0,       /* unknown bandwidth */
+  IPSEC_QOS_INTERACTIVE = 16,  /* reasonably moderate jitter, moderate fast.
+				  Good enough for telnet/ssh. */
+  IPSEC_QOS_VOIP        = 32,  /* faster crypto, predicable jitter */
+  IPSEC_QOS_FTP         = 64,  /* higher throughput crypto, perhaps hardware
+				  offloaded, but latency/jitter may be bad */
+  IPSEC_QOS_WIRESPEED   = 128, /* expect to be able to fill your pipe */
+};
+
+/* moved from programs/pluto/constants.h */
+/* IPsec AH transform values
+ * RFC2407 The Internet IP security Domain of Interpretation for ISAKMP 4.4.3
+ * and in http://www.iana.org/assignments/isakmp-registry
+ */
+enum ipsec_authentication_algo {
+  AH_NONE     = 0,
+  AH_MD5      = 2,
+  AH_SHA      = 3,
+  AH_DES      = 4,
+  AH_SHA2_256 = 5,
+  AH_SHA2_384 = 6,
+  AH_SHA2_512 = 7,
+  AH_RIPEMD   = 8
+};
+
+/* IPsec ESP transform values
+ * RFC2407 The Internet IP security Domain of Interpretation for ISAKMP 4.4.4
+ * and from http://www.iana.org/assignments/isakmp-registry
+ */
+
+enum ipsec_cipher_algo {
+  ESP_NONE	 = 0,
+  ESP_DES_IV64   = 1,
+  ESP_DES        = 2,
+  ESP_3DES       = 3,
+  ESP_RC5        = 4,
+  ESP_IDEA       = 5,
+  ESP_CAST       = 6,
+  ESP_BLOWFISH   = 7,
+  ESP_3IDEA      = 8,
+  ESP_DES_IV32   = 9,
+  ESP_RC4        = 10,
+  ESP_NULL       = 11,
+  ESP_AES        = 12,
+  ESP_AES_CTR    = 13,
+  ESP_AES_CCM_8  = 14,
+  ESP_AES_CCM_12 = 15,
+  ESP_AES_CCM_16 = 16,
+  ESP_SERPENT    = 252,
+  ESP_TWOFISH    = 253
+};
+
+/* IPCOMP transform values
+ * RFC2407 The Internet IP security Domain of Interpretation for ISAKMP 4.4.5
+ */
+
+enum ipsec_comp_algo {
+  IPSCOMP_NONE   = 0,
+  IPCOMP_OUI     = 1,
+  IPCOMP_DEFLATE = 2,
+  IPCOMP_LZS     = 3,
+  IPCOMP_LZJH    = 4
+};
+
+/* Identification type values
+ * RFC 2407 The Internet IP security Domain of Interpretation for ISAKMP 4.6.2.1 
+ */
+
+enum ipsec_id_type {
+  ID_IMPOSSIBLE=             (-2),	/* private to Pluto */
+  ID_MYID=                   (-1),	/* private to Pluto */
+  ID_NONE=                     0,	/* private to Pluto */
+  ID_IPV4_ADDR=                1,
+  ID_FQDN=                     2,
+  ID_USER_FQDN=                3,
+  ID_IPV4_ADDR_SUBNET=         4,
+  ID_IPV6_ADDR=                5,
+  ID_IPV6_ADDR_SUBNET=         6,
+  ID_IPV4_ADDR_RANGE=          7,
+  ID_IPV6_ADDR_RANGE=          8,
+  ID_DER_ASN1_DN=              9,
+  ID_DER_ASN1_GN=              10,
+  ID_KEY_ID=                   11
+};
+
+/* Certificate type values
+ * RFC 2408 ISAKMP, chapter 3.9
+ */
+enum ipsec_cert_type {
+  CERT_NONE=			0,  
+  CERT_PKCS7_WRAPPED_X509=	1,  /* self-signed certificate from disk */
+  CERT_PGP=			2,
+  CERT_DNS_SIGNED_KEY=		3,  /* KEY RR from DNS */
+  CERT_X509_SIGNATURE=		4,
+  CERT_X509_KEY_EXCHANGE=	5,
+  CERT_KERBEROS_TOKENS=		6,
+  CERT_CRL=			7,
+  CERT_ARL=			8,
+  CERT_SPKI=			9,
+  CERT_X509_ATTRIBUTE=		10,
+  CERT_RAW_RSA=                 11, /* raw RSA from config file */ 
+};
+
+/* a SIG record in ASCII */
+struct ipsec_dns_sig {
+  char fqdn[256];
+  char dns_sig[768];     /* empty string if not signed */
+};
+
+struct ipsec_raw_key {
+  char id_name[256];
+  char fs_keyid[8];
+};
+
+struct ipsec_identity {
+  enum ipsec_id_type     ii_type;
+  enum ipsec_cert_type   ii_format;
+  union {
+    struct ipsec_dns_sig ipsec_dns_signed;
+    /* some thing for PGP */
+    /* some thing for PKIX */
+    struct ipsec_raw_key ipsec_raw_key;
+  } ii_credential;
+};
+
+#define IPSEC_MAX_CREDENTIALS 32
+
+struct ipsec_policy_cmd_query {
+  struct ipsec_policy_msg_head head;
+
+  /* Query section */
+  ip_address query_local;     /* us   */
+  ip_address query_remote;    /* them */
+  u_short src_port, dst_port;
+
+  /* Answer section */
+  enum ipsec_privacy_quality     strength;
+  enum ipsec_bandwidth_quality   bandwidth;
+  enum ipsec_authentication_algo auth_detail;  
+  enum ipsec_cipher_algo         esp_detail;
+  enum ipsec_comp_algo           comp_detail;
+
+  int                            credential_count;
+
+  struct ipsec_identity credentials[IPSEC_MAX_CREDENTIALS];
+};
+
+#define IPSEC_POLICY_SOCKET "/var/run/pluto.info"
+
+/* prototypes */
+extern err_t ipsec_policy_lookup(int fd, struct ipsec_policy_cmd_query *result);
+extern err_t ipsec_policy_init(void);
+extern err_t ipsec_policy_final(void);
+extern err_t ipsec_policy_readmsg(int policysock,
+				  unsigned char *buf, size_t buflen);
+extern err_t ipsec_policy_sendrecv(unsigned char *buf, size_t buflen);
+extern err_t ipsec_policy_cgilookup(struct ipsec_policy_cmd_query *result);
+
+
+extern const char *ipsec_policy_version_code(void);
+extern const char *ipsec_policy_version_string(void);
+
+#endif /* _IPSEC_POLICY_H */
diff --git a/linux/include/freeswan/ipsec_proto.h b/linux/include/freeswan/ipsec_proto.h
new file mode 100644
index 000000000..55f947512
--- /dev/null
+++ b/linux/include/freeswan/ipsec_proto.h
@@ -0,0 +1,111 @@
+/*
+ * @(#) prototypes for FreeSWAN functions 
+ *
+ * Copyright (C) 2001  Richard Guy Briggs  <rgb@freeswan.org>
+ *                 and Michael Richardson  <mcr@freeswan.org>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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/gpl.txt>.
+ * 
+ * This program 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 General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_proto.h,v 1.3 2004/06/13 19:55:14 as Exp $
+ *
+ */
+
+#ifndef _IPSEC_PROTO_H_
+
+#include "ipsec_param.h"
+
+/*
+ * This file is a kernel only file that declares prototypes for
+ * all intra-module function calls and global data structures.
+ *
+ * Include this file last.
+ *
+ */
+
+/* ipsec_init.c */
+extern struct prng ipsec_prng;
+
+/* ipsec_sa.c */
+extern struct ipsec_sa *ipsec_sadb_hash[SADB_HASHMOD];
+extern spinlock_t       tdb_lock;
+extern int ipsec_sadb_init(void);
+
+extern struct ipsec_sa *ipsec_sa_getbyid(struct sa_id*);
+extern int ipsec_sa_put(struct ipsec_sa *);
+extern /* void */ int ipsec_sa_del(struct ipsec_sa *);
+extern /* void */ int ipsec_sa_delchain(struct ipsec_sa *);
+extern /* void */ int ipsec_sa_add(struct ipsec_sa *);
+
+extern int ipsec_sadb_cleanup(__u8);
+extern int ipsec_sa_wipe(struct ipsec_sa *);
+
+/* debug declarations */
+
+/* ipsec_proc.c */
+extern int  ipsec_proc_init(void);
+extern void ipsec_proc_cleanup(void);
+
+/* ipsec_radij.c */
+extern int ipsec_makeroute(struct sockaddr_encap *ea,
+			   struct sockaddr_encap *em,
+			   struct sa_id said,
+			   uint32_t pid,
+			   struct sk_buff *skb,
+			   struct ident *ident_s,
+			   struct ident *ident_d);
+
+extern int ipsec_breakroute(struct sockaddr_encap *ea,
+			    struct sockaddr_encap *em,
+			    struct sk_buff **first,
+			    struct sk_buff **last);
+
+int ipsec_radijinit(void);
+int ipsec_cleareroutes(void);
+int ipsec_radijcleanup(void);
+
+/* ipsec_life.c */
+extern enum ipsec_life_alive ipsec_lifetime_check(struct ipsec_lifetime64 *il64,
+						  const char *lifename,
+						  const char *saname,
+						  enum ipsec_life_type ilt,
+						  enum ipsec_direction idir,
+						  struct ipsec_sa *ips);
+
+
+extern int ipsec_lifetime_format(char *buffer,
+				 int   buflen,
+				 char *lifename,
+				 enum ipsec_life_type timebaselife,
+				 struct ipsec_lifetime64 *lifetime);
+
+extern void ipsec_lifetime_update_hard(struct ipsec_lifetime64 *lifetime,
+				       __u64 newvalue);
+
+extern void ipsec_lifetime_update_soft(struct ipsec_lifetime64 *lifetime,
+				       __u64 newvalue);
+
+
+
+
+#ifdef CONFIG_IPSEC_DEBUG
+
+extern int debug_xform;
+extern int debug_eroute;
+extern int debug_spi;
+extern int debug_netlink;
+
+#endif /* CONFIG_IPSEC_DEBUG */
+
+
+
+
+#define _IPSEC_PROTO_H
+#endif /* _IPSEC_PROTO_H_ */
diff --git a/linux/include/freeswan/ipsec_radij.h b/linux/include/freeswan/ipsec_radij.h
new file mode 100644
index 000000000..7776dd8e4
--- /dev/null
+++ b/linux/include/freeswan/ipsec_radij.h
@@ -0,0 +1,63 @@
+/*
+ * @(#) Definitions relevant to the IPSEC <> radij tree interfacing
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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/gpl.txt>.
+ * 
+ * This program 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 General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_radij.h,v 1.3 2004/04/28 05:44:29 as Exp $
+ */
+
+#ifndef _IPSEC_RADIJ_H
+
+#include <freeswan.h>
+
+int ipsec_walk(char *);
+
+int ipsec_rj_walker_procprint(struct radij_node *, void *);
+int ipsec_rj_walker_delete(struct radij_node *, void *);
+
+/* This structure is used to pass information between
+ * ipsec_eroute_get_info and ipsec_rj_walker_procprint
+ * (through rj_walktree) and between calls of ipsec_rj_walker_procprint.
+ */
+struct wsbuf
+{
+	/* from caller of ipsec_eroute_get_info: */
+	char *const buffer;	/* start of buffer provided */
+	const int length;	/* length of buffer provided */
+	const off_t offset;	/* file position of first character of interest */
+	/* accumulated by ipsec_rj_walker_procprint: */
+	int len;		/* number of character filled into buffer */
+	off_t begin;		/* file position contained in buffer[0] (<=offset) */
+};
+
+
+extern struct radij_node_head *rnh;
+extern spinlock_t eroute_lock;
+
+struct eroute * ipsec_findroute(struct sockaddr_encap *);
+
+#define O1(x) (int)(((x)>>24)&0xff)
+#define O2(x) (int)(((x)>>16)&0xff)
+#define O3(x) (int)(((x)>>8)&0xff)
+#define O4(x) (int)(((x))&0xff)
+
+#ifdef CONFIG_IPSEC_DEBUG
+extern int debug_radij;
+void rj_dumptrees(void);
+
+#define DB_RJ_DUMPTREES	0x0001
+#define DB_RJ_FINDROUTE 0x0002
+#endif /* CONFIG_IPSEC_DEBUG */
+
+#define _IPSEC_RADIJ_H
+#endif
diff --git a/linux/include/freeswan/ipsec_rcv.h b/linux/include/freeswan/ipsec_rcv.h
new file mode 100644
index 000000000..3ae239bf9
--- /dev/null
+++ b/linux/include/freeswan/ipsec_rcv.h
@@ -0,0 +1,196 @@
+/*
+ * 
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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/gpl.txt>.
+ * 
+ * This program 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 General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_rcv.h,v 1.1 2004/03/15 20:35:25 as Exp $
+ */
+
+#define DB_RX_PKTRX	0x0001
+#define DB_RX_PKTRX2	0x0002
+#define DB_RX_DMP	0x0004
+#define DB_RX_IPSA	0x0010
+#define DB_RX_XF	0x0020
+#define DB_RX_IPAD	0x0040
+#define DB_RX_INAU	0x0080
+#define DB_RX_OINFO	0x0100
+#define DB_RX_OINFO2	0x0200
+#define DB_RX_OH	0x0400
+#define DB_RX_REPLAY	0x0800
+
+#ifdef __KERNEL__
+/* struct options; */
+
+#define __NO_VERSION__
+#include <linux/module.h>
+#include <linux/config.h>	/* for CONFIG_IP_FORWARD */
+#include <linux/version.h>
+#include <freeswan.h>
+
+#define IPSEC_BIRTH_TEMPLATE_MAXLEN 256
+
+struct ipsec_birth_reply {
+  int            packet_template_len;
+  unsigned char  packet_template[IPSEC_BIRTH_TEMPLATE_MAXLEN];
+};
+
+extern struct ipsec_birth_reply ipsec_ipv4_birth_packet;
+extern struct ipsec_birth_reply ipsec_ipv6_birth_packet;
+
+extern int
+#ifdef PROTO_HANDLER_SINGLE_PARM
+ipsec_rcv(struct sk_buff *skb);
+#else /* PROTO_HANDLER_SINGLE_PARM */
+ipsec_rcv(struct sk_buff *skb,
+#ifdef NET_21
+	  unsigned short xlen);
+#else /* NET_21 */
+	  struct device *dev,
+	  struct options *opt, 
+	  __u32 daddr,
+	  unsigned short len,
+	  __u32 saddr,
+	  int redo,
+	  struct inet_protocol *protocol);
+#endif /* NET_21 */
+#endif /* PROTO_HANDLER_SINGLE_PARM */
+
+#ifdef CONFIG_IPSEC_DEBUG
+extern int debug_rcv;
+#endif /* CONFIG_IPSEC_DEBUG */
+extern int sysctl_ipsec_inbound_policy_check;
+#endif /* __KERNEL__ */
+
+/*
+ * $Log: ipsec_rcv.h,v $
+ * Revision 1.1  2004/03/15 20:35:25  as
+ * added files from freeswan-2.04-x509-1.5.3
+ *
+ * Revision 1.17  2002/09/03 16:32:32  mcr
+ * 	definitions of ipsec_birth_reply.
+ *
+ * Revision 1.16  2002/05/14 02:36:00  rgb
+ * Change references to _TDB to _IPSA.
+ *
+ * Revision 1.15  2002/04/24 07:36:47  mcr
+ * Moved from ./klips/net/ipsec/ipsec_rcv.h,v
+ *
+ * Revision 1.14  2001/09/07 22:15:48  rgb
+ * Fix for removal of transport layer protocol handler arg in 2.4.4.
+ *
+ * Revision 1.13  2001/06/14 19:35:09  rgb
+ * Update copyright date.
+ *
+ * Revision 1.12  2001/03/16 07:36:44  rgb
+ * Fixed #endif comment to sate compiler.
+ *
+ * Revision 1.11  2000/09/21 04:34:21  rgb
+ * Moved declaration of sysctl_ipsec_inbound_policy_check outside
+ * CONFIG_IPSEC_DEBUG. (MB)
+ *
+ * Revision 1.10  2000/09/18 02:36:10  rgb
+ * Exported sysctl_ipsec_inbound_policy_check for skb_decompress().
+ *
+ * Revision 1.9  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.8  1999/11/18 04:09:19  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ *
+ * Revision 1.7  1999/05/25 01:45:37  rgb
+ * Fix version macros for 2.0.x as a module.
+ *
+ * Revision 1.6  1999/05/08 21:24:27  rgb
+ * Add includes for 2.2.x include into net/ipv4/protocol.c
+ *
+ * Revision 1.5  1999/05/05 22:02:32  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.4  1999/04/11 00:28:59  henry
+ * GPL boilerplate
+ *
+ * Revision 1.3  1999/04/06 04:54:27  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.2  1999/01/22 20:06:59  rgb
+ * Fixed cut-and-paste error from ipsec_esp.h.
+ *
+ * Revision 1.1  1999/01/21 20:29:12  rgb
+ * Converted from transform switching to algorithm switching.
+ *
+ * Log: ipsec_esp.h,v 
+ * Revision 1.4  1998/08/12 00:07:32  rgb
+ * Added data structures for new xforms: null, {,3}dessha1.
+ *
+ * Revision 1.3  1998/07/14 15:57:01  rgb
+ * Add #ifdef __KERNEL__ to protect kernel-only structures.
+ *
+ * Revision 1.2  1998/06/25 19:33:46  rgb
+ * Add prototype for protocol receive function.
+ * Rearrange for more logical layout.
+ *
+ * Revision 1.1  1998/06/18 21:27:45  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.6  1998/06/05 02:28:08  rgb
+ * Minor comment fix.
+ *
+ * Revision 1.5  1998/05/27 22:34:00  rgb
+ * Changed structures to accomodate key separation.
+ *
+ * Revision 1.4  1998/05/18 22:28:43  rgb
+ * Disable key printing facilities from /proc/net/ipsec_*.
+ *
+ * Revision 1.3  1998/04/21 21:29:07  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.2  1998/04/12 22:03:20  rgb
+ * Updated ESP-3DES-HMAC-MD5-96,
+ * 	ESP-DES-HMAC-MD5-96,
+ * 	AH-HMAC-MD5-96,
+ * 	AH-HMAC-SHA1-96 since Henry started freeswan cvs repository
+ * from old standards (RFC182[5-9] to new (as of March 1998) drafts.
+ *
+ * Fixed eroute references in /proc/net/ipsec*.
+ *
+ * Started to patch module unloading memory leaks in ipsec_netlink and
+ * radij tree unloading.
+ *
+ * Revision 1.1  1998/04/09 03:06:00  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:02  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.5  1997/06/03 04:24:48  ji
+ * Added ESP-3DES-MD5-96 transform.
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * Added definitions for new ESP transforms.
+ *
+ * Revision 0.3  1996/11/20 14:35:48  ji
+ * Minor Cleanup.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
+
+
diff --git a/linux/include/freeswan/ipsec_sa.h b/linux/include/freeswan/ipsec_sa.h
new file mode 100644
index 000000000..555df42d3
--- /dev/null
+++ b/linux/include/freeswan/ipsec_sa.h
@@ -0,0 +1,338 @@
+/*
+ * @(#) Definitions of IPsec Security Association (ipsec_sa)
+ *
+ * Copyright (C) 2001, 2002, 2003
+ *                      Richard Guy Briggs  <rgb@freeswan.org>
+ *                  and Michael Richardson  <mcr@freeswan.org>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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/gpl.txt>.
+ * 
+ * This program 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 General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_sa.h,v 1.3 2004/04/28 08:07:11 as Exp $
+ *
+ * This file derived from ipsec_xform.h on 2001/9/18 by mcr.
+ *
+ */
+
+/* 
+ * This file describes the IPsec Security Association Structure.
+ *
+ * This structure keeps track of a single transform that may be done
+ * to a set of packets. It can describe applying the transform or
+ * apply the reverse. (e.g. compression vs expansion). However, it
+ * only describes one at a time. To describe both, two structures would
+ * be used, but since the sides of the transform are performed 
+ * on different machines typically it is usual to have only one side
+ * of each association.
+ * 
+ */
+
+#ifndef _IPSEC_SA_H_
+
+#ifdef __KERNEL__
+#include "ipsec_stats.h"
+#include "ipsec_life.h"
+#include "ipsec_eroute.h"
+#endif /* __KERNEL__ */
+#include "ipsec_param.h"
+
+
+/* SAs are held in a table.
+ * Entries in this table are referenced by IPsecSAref_t values.
+ * IPsecSAref_t values are conceptually subscripts.  Because
+ * we want to allocate the table piece-meal, the subscripting
+ * is implemented with two levels, a bit like paged virtual memory.
+ * This representation mechanism is known as an Iliffe Vector.
+ *
+ * The Main table (AKA the refTable) consists of 2^IPSEC_SA_REF_MAINTABLE_IDX_WIDTH
+ * pointers to subtables.
+ * Each subtable has 2^IPSEC_SA_REF_SUBTABLE_IDX_WIDTH entries, each of which
+ * is a pointer to an SA.
+ *
+ * An IPsecSAref_t contains either an exceptional value (signified by the
+ * high-order bit being on) or a reference to a table entry.  A table entry
+ * reference has the subtable subscript in the low-order
+ * IPSEC_SA_REF_SUBTABLE_IDX_WIDTH bits and the Main table subscript
+ * in the next lowest IPSEC_SA_REF_MAINTABLE_IDX_WIDTH bits.
+ *
+ * The Maintable entry for an IPsecSAref_t x, a pointer to its subtable, is
+ * IPsecSAref2table(x).  It is of type struct IPsecSArefSubTable *.
+ *
+ * The pointer to the SA for x is IPsecSAref2SA(x).  It is of type
+ * struct ipsec_sa*.  The macro definition clearly shows the two-level
+ * access needed to find the SA pointer.
+ *
+ * The Maintable is allocated when IPsec is initialized.
+ * Each subtable is allocated when needed, but the first is allocated
+ * when IPsec is initialized.
+ *
+ * IPsecSAref_t is designed to be smaller than an NFmark so that
+ * they can be stored in NFmarks and still leave a few bits for other
+ * purposes.  The spare bits are in the low order of the NFmark
+ * but in the high order of the IPsecSAref_t, so conversion is required.
+ * We pick the upper bits of NFmark on the theory that they are less likely to
+ * interfere with more pedestrian uses of nfmark.
+ */
+
+
+typedef unsigned short int IPsecRefTableUnusedCount;
+
+#define IPSEC_SA_REF_TABLE_NUM_ENTRIES (1 << IPSEC_SA_REF_TABLE_IDX_WIDTH)
+
+#ifdef __KERNEL__
+#if ((IPSEC_SA_REF_TABLE_IDX_WIDTH - (1 + IPSEC_SA_REF_MAINTABLE_IDX_WIDTH)) < 0)
+#error "IPSEC_SA_REF_TABLE_IDX_WIDTH("IPSEC_SA_REF_TABLE_IDX_WIDTH") MUST be < 1 + IPSEC_SA_REF_MAINTABLE_IDX_WIDTH("IPSEC_SA_REF_MAINTABLE_IDX_WIDTH")"
+#endif
+
+#define IPSEC_SA_REF_SUBTABLE_IDX_WIDTH (IPSEC_SA_REF_TABLE_IDX_WIDTH - IPSEC_SA_REF_MAINTABLE_IDX_WIDTH)
+
+#define IPSEC_SA_REF_MAINTABLE_NUM_ENTRIES (1 << IPSEC_SA_REF_MAINTABLE_IDX_WIDTH)
+#define IPSEC_SA_REF_SUBTABLE_NUM_ENTRIES (1 << IPSEC_SA_REF_SUBTABLE_IDX_WIDTH)
+
+#ifdef CONFIG_NETFILTER
+#define IPSEC_SA_REF_HOST_FIELD(x) ((struct sk_buff*)(x))->nfmark
+#define IPSEC_SA_REF_HOST_FIELD_TYPE typeof(IPSEC_SA_REF_HOST_FIELD(NULL))
+#else /* CONFIG_NETFILTER */
+/* just make it work for now, it doesn't matter, since there is no nfmark */
+#define IPSEC_SA_REF_HOST_FIELD_TYPE unsigned long
+#endif /* CONFIG_NETFILTER */
+#define IPSEC_SA_REF_HOST_FIELD_WIDTH (8 * sizeof(IPSEC_SA_REF_HOST_FIELD_TYPE))
+#define IPSEC_SA_REF_FIELD_WIDTH (8 * sizeof(IPsecSAref_t))
+
+#define IPSEC_SA_REF_MASK        (IPSEC_SAREF_NULL >> (IPSEC_SA_REF_FIELD_WIDTH - IPSEC_SA_REF_TABLE_IDX_WIDTH))
+#define IPSEC_SA_REF_TABLE_MASK ((IPSEC_SAREF_NULL >> (IPSEC_SA_REF_FIELD_WIDTH - IPSEC_SA_REF_MAINTABLE_IDX_WIDTH)) << IPSEC_SA_REF_SUBTABLE_IDX_WIDTH)
+#define IPSEC_SA_REF_ENTRY_MASK  (IPSEC_SAREF_NULL >> (IPSEC_SA_REF_FIELD_WIDTH - IPSEC_SA_REF_SUBTABLE_IDX_WIDTH))
+
+#define IPsecSAref2table(x) (((x) & IPSEC_SA_REF_TABLE_MASK) >> IPSEC_SA_REF_SUBTABLE_IDX_WIDTH)
+#define IPsecSAref2entry(x) ((x) & IPSEC_SA_REF_ENTRY_MASK)
+#define IPsecSArefBuild(x,y) (((x) << IPSEC_SA_REF_SUBTABLE_IDX_WIDTH) + (y))
+
+#define IPsecSAref2SA(x) (ipsec_sadb.refTable[IPsecSAref2table(x)]->entry[IPsecSAref2entry(x)])
+#define IPsecSA2SAref(x) ((x)->ips_ref)
+
+#define EMT_INBOUND	0x01	/* SA direction, 1=inbound */
+
+/* 'struct ipsec_sa' should be 64bit aligned when allocated. */
+struct ipsec_sa 	                        
+{
+	IPsecSAref_t	ips_ref;		/* reference table entry number */
+	atomic_t	ips_refcount;		/* reference count for this struct */
+	struct ipsec_sa	*ips_hnext;		/* next in hash chain */
+	struct ipsec_sa	*ips_inext;	 	/* pointer to next xform */
+	struct ipsec_sa	*ips_onext;	 	/* pointer to prev xform */
+
+	struct ifnet	*ips_rcvif;	 	/* related rcv encap interface */
+
+	struct sa_id	ips_said;	 	/* SA ID */
+
+	__u32		ips_seq;		/* seq num of msg that initiated this SA */
+	__u32		ips_pid;		/* PID of process that initiated this SA */
+	__u8		ips_authalg;		/* auth algorithm for this SA */
+	__u8		ips_encalg;		/* enc algorithm for this SA */
+
+	struct ipsec_stats ips_errs;
+
+	__u8		ips_replaywin;		/* replay window size */
+	__u8		ips_state;		/* state of SA */
+	__u32		ips_replaywin_lastseq;	/* last pkt sequence num */
+	__u64		ips_replaywin_bitmap;	/* bitmap of received pkts */
+	__u32		ips_replaywin_maxdiff;	/* max pkt sequence difference */
+
+	__u32		ips_flags;		/* generic xform flags */
+
+
+	struct ipsec_lifetimes ips_life;	/* lifetime records */
+
+	/* selector information */
+	struct sockaddr*ips_addr_s;		/* src sockaddr */
+	struct sockaddr*ips_addr_d;		/* dst sockaddr */
+	struct sockaddr*ips_addr_p;		/* proxy sockaddr */
+	__u16		ips_addr_s_size;
+	__u16		ips_addr_d_size;
+	__u16		ips_addr_p_size;
+	ip_address	ips_flow_s;
+	ip_address	ips_flow_d;
+	ip_address	ips_mask_s;
+	ip_address	ips_mask_d;
+
+	__u16		ips_key_bits_a;		/* size of authkey in bits */
+	__u16		ips_auth_bits;		/* size of authenticator in bits */
+	__u16		ips_key_bits_e;		/* size of enckey in bits */
+	__u16		ips_iv_bits;	 	/* size of IV in bits */
+	__u8		ips_iv_size;
+	__u16		ips_key_a_size;
+	__u16		ips_key_e_size;
+
+	caddr_t		ips_key_a;		/* authentication key */
+	caddr_t		ips_key_e;		/* encryption key */
+	caddr_t	        ips_iv;			/* Initialisation Vector */
+
+	struct ident	ips_ident_s;		/* identity src */
+	struct ident	ips_ident_d;		/* identity dst */
+
+#ifdef CONFIG_IPSEC_IPCOMP
+	__u16		ips_comp_adapt_tries;	/* ipcomp self-adaption tries */
+	__u16		ips_comp_adapt_skip;	/* ipcomp self-adaption to-skip */
+	__u64		ips_comp_ratio_cbytes;	/* compressed bytes */
+	__u64		ips_comp_ratio_dbytes;	/* decompressed (or uncompressed) bytes */
+#endif /* CONFIG_IPSEC_IPCOMP */
+
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+	__u8		ips_natt_type;
+	__u8		ips_natt_reserved[3];
+	__u16		ips_natt_sport;
+	__u16		ips_natt_dport;
+
+	struct sockaddr *ips_natt_oa;
+	__u16		ips_natt_oa_size;
+	__u16		ips_natt_reserved2;
+#endif
+
+#if 0
+	__u32		ips_sens_dpd;
+	__u8		ips_sens_sens_level;
+	__u8		ips_sens_sens_len;
+	__u64*		ips_sens_sens_bitmap;
+	__u8		ips_sens_integ_level;
+	__u8		ips_sens_integ_len;
+	__u64*		ips_sens_integ_bitmap;
+#endif
+	struct ipsec_alg_enc *ips_alg_enc;
+	struct ipsec_alg_auth *ips_alg_auth;
+	IPsecSAref_t	ips_ref_rel;
+};
+
+struct IPsecSArefSubTable
+{
+	struct ipsec_sa* entry[IPSEC_SA_REF_SUBTABLE_NUM_ENTRIES];
+};
+
+struct ipsec_sadb {
+	struct IPsecSArefSubTable* refTable[IPSEC_SA_REF_MAINTABLE_NUM_ENTRIES];
+	IPsecSAref_t refFreeList[IPSEC_SA_REF_FREELIST_NUM_ENTRIES];
+	int refFreeListHead;
+	int refFreeListTail;
+	IPsecSAref_t refFreeListCont;
+	IPsecSAref_t said_hash[SADB_HASHMOD];
+	spinlock_t sadb_lock;
+};
+
+extern struct ipsec_sadb ipsec_sadb;
+
+extern int ipsec_SAref_recycle(void);
+extern int ipsec_SArefSubTable_alloc(unsigned table);
+extern int ipsec_saref_freelist_init(void);
+extern int ipsec_sadb_init(void);
+extern struct ipsec_sa *ipsec_sa_alloc(int*error); /* pass in error var by pointer */
+extern IPsecSAref_t ipsec_SAref_alloc(int*erorr); /* pass in error var by pointer */
+extern int ipsec_sa_free(struct ipsec_sa* ips);
+extern struct ipsec_sa *ipsec_sa_getbyid(struct sa_id *said);
+extern int ipsec_sa_put(struct ipsec_sa *ips);
+extern int ipsec_sa_add(struct ipsec_sa *ips);
+extern int ipsec_sa_del(struct ipsec_sa *ips);
+extern int ipsec_sa_delchain(struct ipsec_sa *ips);
+extern int ipsec_sadb_cleanup(__u8 proto);
+extern int ipsec_sadb_free(void);
+extern int ipsec_sa_wipe(struct ipsec_sa *ips);
+#endif /* __KERNEL__ */
+
+enum ipsec_direction {
+	ipsec_incoming = 1,
+	ipsec_outgoing = 2
+};
+
+#define _IPSEC_SA_H_
+#endif /* _IPSEC_SA_H_ */
+
+/*
+ * $Log: ipsec_sa.h,v $
+ * Revision 1.3  2004/04/28 08:07:11  as
+ * added dhr's freeswan-2.06 changes
+ *
+ * Revision 1.2  2004/03/22 21:53:18  as
+ * merged alg-0.8.1 branch with HEAD
+ *
+ * Revision 1.1.2.1.2.1  2004/03/16 09:48:18  as
+ * alg-0.8.1rc12 patch merged
+ *
+ * Revision 1.1.2.1  2004/03/15 22:30:06  as
+ * nat-0.6c patch merged
+ *
+ * Revision 1.1  2004/03/15 20:35:25  as
+ * added files from freeswan-2.04-x509-1.5.3
+ *
+ * Revision 1.15  2003/05/11 00:53:09  mcr
+ * 	IPsecSAref_t and macros were moved to freeswan.h.
+ *
+ * Revision 1.14  2003/02/12 19:31:55  rgb
+ * Fixed bug in "file seen" machinery.
+ * Updated copyright year.
+ *
+ * Revision 1.13  2003/01/30 02:31:52  rgb
+ *
+ * Re-wrote comments describing SAref system for accuracy.
+ * Rename SAref table macro names for clarity.
+ * Convert IPsecSAref_t from signed to unsigned to fix apparent SAref exhaustion bug.
+ * Transmit error code through to caller from callee for better diagnosis of problems.
+ * Enclose all macro arguments in parens to avoid any possible obscrure bugs.
+ *
+ * Revision 1.12  2002/10/07 18:31:19  rgb
+ * Change comment to reflect the flexible nature of the main and sub-table widths.
+ * Added a counter for the number of unused entries in each subtable.
+ * Further break up host field type macro to host field.
+ * Move field width sanity checks to ipsec_sa.c
+ * Define a mask for an entire saref.
+ *
+ * Revision 1.11  2002/09/20 15:40:33  rgb
+ * Re-write most of the SAref macros and types to eliminate any pointer references to Entrys.
+ * Fixed SAref/nfmark macros.
+ * Rework saref freeslist.
+ * Place all ipsec sadb globals into one struct.
+ * Restrict some bits to kernel context for use to klips utils.
+ *
+ * Revision 1.10  2002/09/20 05:00:34  rgb
+ * Update copyright date.
+ *
+ * Revision 1.9  2002/09/17 17:19:29  mcr
+ * 	make it compile even if there is no netfilter - we lost
+ * 	functionality, but it works, especially on 2.2.
+ *
+ * Revision 1.8  2002/07/28 22:59:53  mcr
+ * 	clarified/expanded one comment.
+ *
+ * Revision 1.7  2002/07/26 08:48:31  rgb
+ * Added SA ref table code.
+ *
+ * Revision 1.6  2002/05/31 17:27:48  rgb
+ * Comment fix.
+ *
+ * Revision 1.5  2002/05/27 18:55:03  rgb
+ * Remove final vistiges of tdb references via IPSEC_KLIPS1_COMPAT.
+ *
+ * Revision 1.4  2002/05/23 07:13:36  rgb
+ * Convert "usecount" to "refcount" to remove ambiguity.
+ *
+ * Revision 1.3  2002/04/24 07:36:47  mcr
+ * Moved from ./klips/net/ipsec/ipsec_sa.h,v
+ *
+ * Revision 1.2  2001/11/26 09:16:15  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.1.2.1  2001/09/25 02:24:58  mcr
+ * 	struct tdb -> struct ipsec_sa.
+ * 	sa(tdb) manipulation functions renamed and moved to ipsec_sa.c
+ * 	ipsec_xform.c removed. header file still contains useful things.
+ *
+ *
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
diff --git a/linux/include/freeswan/ipsec_sha1.h b/linux/include/freeswan/ipsec_sha1.h
new file mode 100644
index 000000000..116170e6b
--- /dev/null
+++ b/linux/include/freeswan/ipsec_sha1.h
@@ -0,0 +1,79 @@
+/*
+ * RCSID $Id: ipsec_sha1.h,v 1.1 2004/03/15 20:35:25 as Exp $
+ */
+
+/*
+ * Here is the original comment from the distribution:
+
+SHA-1 in C
+By Steve Reid <steve@edmweb.com>
+100% Public Domain
+
+ * Adapted for use by the IPSEC code by John Ioannidis
+ */
+
+
+#ifndef _IPSEC_SHA1_H_
+#define _IPSEC_SHA1_H_
+
+typedef struct
+{
+	__u32	state[5];
+	__u32	count[2];
+	__u8	buffer[64];
+} SHA1_CTX;
+
+void SHA1Transform(__u32 state[5], __u8 buffer[64]);
+void SHA1Init(void *context);
+void SHA1Update(void *context, unsigned char *data, __u32 len);
+void SHA1Final(unsigned char digest[20], void *context);
+
+ 
+#endif /* _IPSEC_SHA1_H_ */
+
+/*
+ * $Log: ipsec_sha1.h,v $
+ * Revision 1.1  2004/03/15 20:35:25  as
+ * added files from freeswan-2.04-x509-1.5.3
+ *
+ * Revision 1.7  2002/09/10 01:45:09  mcr
+ * 	changed type of MD5_CTX and SHA1_CTX to void * so that
+ * 	the function prototypes would match, and could be placed
+ * 	into a pointer to a function.
+ *
+ * Revision 1.6  2002/04/24 07:36:47  mcr
+ * Moved from ./klips/net/ipsec/ipsec_sha1.h,v
+ *
+ * Revision 1.5  1999/12/13 13:59:13  rgb
+ * Quick fix to argument size to Update bugs.
+ *
+ * Revision 1.4  1999/12/07 18:16:23  rgb
+ * Fixed comments at end of #endif lines.
+ *
+ * Revision 1.3  1999/04/06 04:54:27  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.2  1998/11/30 13:22:54  rgb
+ * Rationalised all the klips kernel file headers.  They are much shorter
+ * now and won't conflict under RH5.2.
+ *
+ * Revision 1.1  1998/06/18 21:27:50  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.2  1998/04/23 20:54:05  rgb
+ * Fixed md5 and sha1 include file nesting issues, to be cleaned up when
+ * verified.
+ *
+ * Revision 1.1  1998/04/09 03:04:21  henry
+ * sources moved up from linux/net/ipsec
+ * these two include files modified not to include others except in kernel
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:04  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * New transform
+ *
+ */
diff --git a/linux/include/freeswan/ipsec_stats.h b/linux/include/freeswan/ipsec_stats.h
new file mode 100644
index 000000000..e4be11d29
--- /dev/null
+++ b/linux/include/freeswan/ipsec_stats.h
@@ -0,0 +1,38 @@
+/*
+ * @(#) definition of ipsec_stats structure
+ *
+ * Copyright (C) 2001  Richard Guy Briggs  <rgb@freeswan.org>
+ *                 and Michael Richardson  <mcr@freeswan.org>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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/gpl.txt>.
+ * 
+ * This program 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 General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_stats.h,v 1.2 2004/03/30 19:33:52 as Exp $
+ *
+ */
+
+/* 
+ * This file describes the errors/statistics that FreeSWAN collects.
+ */
+
+#ifndef _IPSEC_STATS_H_
+
+struct ipsec_stats {
+	__u32		ips_alg_errs;	       /* number of algorithm errors */
+	__u32		ips_auth_errs;	       /* # of authentication errors */
+	__u32		ips_encsize_errs;      /* # of encryption size errors*/
+	__u32		ips_encpad_errs;       /* # of encryption pad  errors*/
+	__u32		ips_replaywin_errs;    /* # of pkt sequence errors */
+};
+
+extern int ipsec_snprintf(char * buf, ssize_t size, const char *fmt, ...);
+
+#define _IPSEC_STATS_H_
+#endif /* _IPSEC_STATS_H_ */
diff --git a/linux/include/freeswan/ipsec_tunnel.h b/linux/include/freeswan/ipsec_tunnel.h
new file mode 100644
index 000000000..3b25e95e1
--- /dev/null
+++ b/linux/include/freeswan/ipsec_tunnel.h
@@ -0,0 +1,265 @@
+/*
+ * IPSEC tunneling code
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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/gpl.txt>.
+ * 
+ * This program 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 General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_tunnel.h,v 1.1 2004/03/15 20:35:25 as Exp $
+ */
+
+
+#ifdef NET_21
+# define DEV_QUEUE_XMIT(skb, device, pri) {\
+	skb->dev = device; \
+	neigh_compat_output(skb); \
+	/* skb->dst->output(skb); */ \
+ }
+# define ICMP_SEND(skb_in, type, code, info, dev) \
+	icmp_send(skb_in, type, code, htonl(info))
+# define IP_SEND(skb, dev) \
+	ip_send(skb);
+#else /* NET_21 */
+# define DEV_QUEUE_XMIT(skb, device, pri) {\
+	dev_queue_xmit(skb, device, pri); \
+ }
+# define ICMP_SEND(skb_in, type, code, info, dev) \
+	icmp_send(skb_in, type, code, info, dev)
+# define IP_SEND(skb, dev) \
+	if(ntohs(iph->tot_len) > physmtu) { \
+		ip_fragment(NULL, skb, dev, 0); \
+		ipsec_kfree_skb(skb); \
+	} else { \
+		dev_queue_xmit(skb, dev, SOPRI_NORMAL); \
+	}
+#endif /* NET_21 */
+
+
+/*
+ * Heavily based on drivers/net/new_tunnel.c.  Lots
+ * of ideas also taken from the 2.1.x version of drivers/net/shaper.c
+ */
+
+struct ipsectunnelconf
+{
+	__u32	cf_cmd;
+	union
+	{
+		char 	cfu_name[12];
+	} cf_u;
+#define cf_name cf_u.cfu_name
+};
+
+#define IPSEC_SET_DEV	(SIOCDEVPRIVATE)
+#define IPSEC_DEL_DEV	(SIOCDEVPRIVATE + 1)
+#define IPSEC_CLR_DEV	(SIOCDEVPRIVATE + 2)
+
+#ifdef __KERNEL__
+#include <linux/version.h>
+#ifndef KERNEL_VERSION
+#  define KERNEL_VERSION(x,y,z) (((x)<<16)+((y)<<8)+(z))
+#endif
+struct ipsecpriv
+{
+	struct sk_buff_head sendq;
+	struct device *dev;
+	struct wait_queue *wait_queue;
+	char locked;
+	int  (*hard_start_xmit) (struct sk_buff *skb,
+		struct device *dev);
+	int  (*hard_header) (struct sk_buff *skb,
+		struct device *dev,
+		unsigned short type,
+		void *daddr,
+		void *saddr,
+		unsigned len);
+#ifdef NET_21
+	int  (*rebuild_header)(struct sk_buff *skb);
+#else /* NET_21 */
+	int  (*rebuild_header)(void *buff, struct device *dev,
+			unsigned long raddr, struct sk_buff *skb);
+#endif /* NET_21 */
+	int  (*set_mac_address)(struct device *dev, void *addr);
+#ifndef NET_21
+	void (*header_cache_bind)(struct hh_cache **hhp, struct device *dev,
+				 unsigned short htype, __u32 daddr);
+#endif /* !NET_21 */
+	void (*header_cache_update)(struct hh_cache *hh, struct device *dev, unsigned char *  haddr);
+	struct net_device_stats *(*get_stats)(struct device *dev);
+	struct net_device_stats mystats;
+	int mtu;	/* What is the desired MTU? */
+};
+
+extern char ipsec_tunnel_c_version[];
+
+extern struct device *ipsecdevices[IPSEC_NUM_IF];
+
+int ipsec_tunnel_init_devices(void);
+
+/* void */ int ipsec_tunnel_cleanup_devices(void);
+
+extern /* void */ int ipsec_init(void);
+
+extern int ipsec_tunnel_start_xmit(struct sk_buff *skb, struct device *dev);
+
+#ifdef CONFIG_IPSEC_DEBUG
+extern int debug_tunnel;
+extern int sysctl_ipsec_debug_verbose;
+#endif /* CONFIG_IPSEC_DEBUG */
+#endif /* __KERNEL__ */
+
+#ifdef CONFIG_IPSEC_DEBUG
+#define DB_TN_INIT	0x0001
+#define DB_TN_PROCFS	0x0002
+#define DB_TN_XMIT	0x0010
+#define DB_TN_OHDR	0x0020
+#define DB_TN_CROUT	0x0040
+#define DB_TN_OXFS	0x0080
+#define DB_TN_REVEC	0x0100
+#endif /* CONFIG_IPSEC_DEBUG */
+
+/*
+ * $Log: ipsec_tunnel.h,v $
+ * Revision 1.1  2004/03/15 20:35:25  as
+ * added files from freeswan-2.04-x509-1.5.3
+ *
+ * Revision 1.28  2003/06/24 20:22:32  mcr
+ * 	added new global: ipsecdevices[] so that we can keep track of
+ * 	the ipsecX devices. They will be referenced with dev_hold(),
+ * 	so 2.2 may need this as well.
+ *
+ * Revision 1.27  2003/04/03 17:38:09  rgb
+ * Centralised ipsec_kfree_skb and ipsec_dev_{get,put}.
+ *
+ * Revision 1.26  2003/02/12 19:32:20  rgb
+ * Updated copyright year.
+ *
+ * Revision 1.25  2002/05/27 18:56:07  rgb
+ * Convert to dynamic ipsec device allocation.
+ *
+ * Revision 1.24  2002/04/24 07:36:48  mcr
+ * Moved from ./klips/net/ipsec/ipsec_tunnel.h,v
+ *
+ * Revision 1.23  2001/11/06 19:50:44  rgb
+ * Moved IP_SEND, ICMP_SEND, DEV_QUEUE_XMIT macros to ipsec_tunnel.h for
+ * use also by pfkey_v2_parser.c
+ *
+ * Revision 1.22  2001/09/15 16:24:05  rgb
+ * Re-inject first and last HOLD packet when an eroute REPLACE is done.
+ *
+ * Revision 1.21  2001/06/14 19:35:10  rgb
+ * Update copyright date.
+ *
+ * Revision 1.20  2000/09/15 11:37:02  rgb
+ * Merge in heavily modified Svenning Soerensen's <svenning@post5.tele.dk>
+ * IPCOMP zlib deflate code.
+ *
+ * Revision 1.19  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.18  2000/07/28 13:50:54  rgb
+ * Changed enet_statistics to net_device_stats and added back compatibility
+ * for pre-2.1.19.
+ *
+ * Revision 1.17  1999/11/19 01:12:15  rgb
+ * Purge unneeded proc_info prototypes, now that static linking uses
+ * dynamic proc_info registration.
+ *
+ * Revision 1.16  1999/11/18 18:51:00  rgb
+ * Changed all device registrations for static linking to
+ * dynamic to reduce the number and size of patches.
+ *
+ * Revision 1.15  1999/11/18 04:14:21  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ * Added CONFIG_PROC_FS compiler directives in case it is shut off.
+ * Added Marc Boucher's 2.3.25 proc patches.
+ *
+ * Revision 1.14  1999/05/25 02:50:10  rgb
+ * Fix kernel version macros for 2.0.x static linking.
+ *
+ * Revision 1.13  1999/05/25 02:41:06  rgb
+ * Add ipsec_klipsdebug support for static linking.
+ *
+ * Revision 1.12  1999/05/05 22:02:32  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.11  1999/04/29 15:19:50  rgb
+ * Add return values to init and cleanup functions.
+ *
+ * Revision 1.10  1999/04/16 16:02:39  rgb
+ * Bump up macro to 4 ipsec I/Fs.
+ *
+ * Revision 1.9  1999/04/15 15:37:25  rgb
+ * Forward check changes from POST1_00 branch.
+ *
+ * Revision 1.5.2.1  1999/04/02 04:26:14  rgb
+ * Backcheck from HEAD, pre1.0.
+ *
+ * Revision 1.8  1999/04/11 00:29:01  henry
+ * GPL boilerplate
+ *
+ * Revision 1.7  1999/04/06 04:54:28  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.6  1999/03/31 05:44:48  rgb
+ * Keep PMTU reduction private.
+ *
+ * Revision 1.5  1999/02/10 22:31:20  rgb
+ * Change rebuild_header member to reflect generality of link layer.
+ *
+ * Revision 1.4  1998/12/01 13:22:04  rgb
+ * Added support for debug printing of version info.
+ *
+ * Revision 1.3  1998/07/29 20:42:46  rgb
+ * Add a macro for clearing all tunnel devices.
+ * Rearrange structures and declarations for sharing with userspace.
+ *
+ * Revision 1.2  1998/06/25 20:01:45  rgb
+ * Make prototypes available for ipsec_init and ipsec proc_dir_entries
+ * for static linking.
+ *
+ * Revision 1.1  1998/06/18 21:27:50  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.3  1998/05/18 21:51:50  rgb
+ * Added macros for num of I/F's and a procfs debug switch.
+ *
+ * Revision 1.2  1998/04/21 21:29:09  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.1  1998/04/09 03:06:13  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:05  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.5  1997/06/03 04:24:48  ji
+ * Added transport mode.
+ * Changed the way routing is done.
+ * Lots of bug fixes.
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:39:04  ji
+ * Minor cleanups.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff --git a/linux/include/freeswan/ipsec_xform.h b/linux/include/freeswan/ipsec_xform.h
new file mode 100644
index 000000000..1dc6b6083
--- /dev/null
+++ b/linux/include/freeswan/ipsec_xform.h
@@ -0,0 +1,274 @@
+/*
+ * Definitions relevant to IPSEC transformations
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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/gpl.txt>.
+ * 
+ * This program 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 General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_xform.h,v 1.3 2004/09/29 22:26:13 as Exp $
+ */
+
+#ifndef _IPSEC_XFORM_H_
+
+#include <freeswan.h>
+#include "ipsec_policy.h"
+
+#define XF_NONE			0	/* No transform set */
+#define XF_IP4			1	/* IPv4 inside IPv4 */
+#define XF_AHMD5		2	/* AH MD5 */
+#define XF_AHSHA		3	/* AH SHA */
+#define XF_ESP3DES		5	/* ESP DES3-CBC */
+#define XF_AHHMACMD5		6	/* AH-HMAC-MD5 with opt replay prot */
+#define XF_AHHMACSHA1		7	/* AH-HMAC-SHA1 with opt replay prot */
+#define XF_ESP3DESMD5		9	/* triple DES, HMAC-MD-5, 128-bits of authentication */
+#define	XF_ESP3DESMD596		10	/* triple DES, HMAC-MD-5, 96-bits of authentication */
+#define	XF_ESPNULLMD596		12	/* NULL, HMAC-MD-5 with 96-bits of authentication */
+#define	XF_ESPNULLSHA196	13	/* NULL, HMAC-SHA-1 with 96-bits of authentication */
+#define	XF_ESP3DESSHA196	14	/* triple DES, HMAC-SHA-1, 96-bits of authentication */
+#define XF_IP6			15	/* IPv6 inside IPv6 */
+#define XF_COMPDEFLATE		16	/* IPCOMP deflate */
+
+#define XF_CLR			126	/* Clear SA table */
+#define XF_DEL			127	/* Delete SA */
+
+#define XFT_AUTH		0x0001
+#define XFT_CONF		0x0100
+
+/* available if CONFIG_IPSEC_DEBUG is defined */
+#define DB_XF_INIT		0x0001
+
+#define PROTO2TXT(x) \
+	(x) == IPPROTO_AH ? "AH" : \
+	(x) == IPPROTO_ESP ? "ESP" : \
+	(x) == IPPROTO_IPIP ? "IPIP" : \
+	(x) == IPPROTO_COMP ? "COMP" : \
+	"UNKNOWN_proto"
+static inline const char *enc_name_id (unsigned id) {
+	static char buf[16];
+	snprintf(buf, sizeof(buf), "_ID%d", id);
+	return buf;
+}
+static inline const char *auth_name_id (unsigned id) {
+	static char buf[16];
+	snprintf(buf, sizeof(buf), "_ID%d", id);
+	return buf;
+}
+#define IPS_XFORM_NAME(x) \
+	PROTO2TXT((x)->ips_said.proto), \
+	(x)->ips_said.proto == IPPROTO_COMP ? \
+		((x)->ips_encalg == SADB_X_CALG_DEFLATE ? \
+		 "_DEFLATE" : "_UNKNOWN_comp") : \
+	(x)->ips_encalg == ESP_NONE ? "" : \
+	(x)->ips_encalg == ESP_3DES ? "_3DES" : \
+	(x)->ips_encalg == ESP_AES ? "_AES" : \
+	(x)->ips_encalg == ESP_SERPENT ? "_SERPENT" : \
+	(x)->ips_encalg == ESP_TWOFISH ? "_TWOFISH" : \
+	enc_name_id(x->ips_encalg)/* "_UNKNOWN_encr" */, \
+	(x)->ips_authalg == AH_NONE ? "" : \
+	(x)->ips_authalg == AH_MD5 ? "_HMAC_MD5" : \
+	(x)->ips_authalg == AH_SHA ? "_HMAC_SHA1" : \
+	(x)->ips_authalg == AH_SHA2_256 ? "_HMAC_SHA2_256" : \
+	(x)->ips_authalg == AH_SHA2_384 ? "_HMAC_SHA2_384" : \
+	(x)->ips_authalg == AH_SHA2_512 ? "_HMAC_SHA2_512" : \
+	auth_name_id(x->ips_authalg) /* "_UNKNOWN_auth" */ \
+
+#define _IPSEC_XFORM_H_
+#endif /* _IPSEC_XFORM_H_ */
+
+/*
+ * $Log: ipsec_xform.h,v $
+ * Revision 1.3  2004/09/29 22:26:13  as
+ * included ipsec_policy.h
+ *
+ * Revision 1.2  2004/03/22 21:53:18  as
+ * merged alg-0.8.1 branch with HEAD
+ *
+ * Revision 1.1.4.1  2004/03/16 09:48:18  as
+ * alg-0.8.1rc12 patch merged
+ *
+ * Revision 1.1  2004/03/15 20:35:25  as
+ * added files from freeswan-2.04-x509-1.5.3
+ *
+ * Revision 1.36  2002/04/24 07:36:48  mcr
+ * Moved from ./klips/net/ipsec/ipsec_xform.h,v
+ *
+ * Revision 1.35  2001/11/26 09:23:51  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.33.2.1  2001/09/25 02:24:58  mcr
+ * 	struct tdb -> struct ipsec_sa.
+ * 	sa(tdb) manipulation functions renamed and moved to ipsec_sa.c
+ * 	ipsec_xform.c removed. header file still contains useful things.
+ *
+ * Revision 1.34  2001/11/06 19:47:17  rgb
+ * Changed lifetime_packets to uint32 from uint64.
+ *
+ * Revision 1.33  2001/09/08 21:13:34  rgb
+ * Added pfkey ident extension support for ISAKMPd. (NetCelo)
+ *
+ * Revision 1.32  2001/07/06 07:40:01  rgb
+ * Reformatted for readability.
+ * Added inbound policy checking fields for use with IPIP SAs.
+ *
+ * Revision 1.31  2001/06/14 19:35:11  rgb
+ * Update copyright date.
+ *
+ * Revision 1.30  2001/05/30 08:14:03  rgb
+ * Removed vestiges of esp-null transforms.
+ *
+ * Revision 1.29  2001/01/30 23:42:47  rgb
+ * Allow pfkey msgs from pid other than user context required for ACQUIRE
+ * and subsequent ADD or UDATE.
+ *
+ * Revision 1.28  2000/11/06 04:30:40  rgb
+ * Add Svenning's adaptive content compression.
+ *
+ * Revision 1.27  2000/09/19 00:38:25  rgb
+ * Fixed algorithm name bugs introduced for ipcomp.
+ *
+ * Revision 1.26  2000/09/17 21:36:48  rgb
+ * Added proto2txt macro.
+ *
+ * Revision 1.25  2000/09/17 18:56:47  rgb
+ * Added IPCOMP support.
+ *
+ * Revision 1.24  2000/09/12 19:34:12  rgb
+ * Defined XF_IP6 from Gerhard for ipv6 tunnel support.
+ *
+ * Revision 1.23  2000/09/12 03:23:14  rgb
+ * Cleaned out now unused tdb_xform and tdb_xdata members of struct tdb.
+ *
+ * Revision 1.22  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.21  2000/09/01 18:32:43  rgb
+ * Added (disabled) sensitivity members to tdb struct.
+ *
+ * Revision 1.20  2000/08/30 05:31:01  rgb
+ * Removed all the rest of the references to tdb_spi, tdb_proto, tdb_dst.
+ * Kill remainder of tdb_xform, tdb_xdata, xformsw.
+ *
+ * Revision 1.19  2000/08/01 14:51:52  rgb
+ * Removed _all_ remaining traces of DES.
+ *
+ * Revision 1.18  2000/01/21 06:17:45  rgb
+ * Tidied up spacing.
+ *
+ * Revision 1.17  1999/11/17 15:53:40  rgb
+ * Changed all occurrences of #include "../../../lib/freeswan.h"
+ * to #include <freeswan.h> which works due to -Ilibfreeswan in the
+ * klips/net/ipsec/Makefile.
+ *
+ * Revision 1.16  1999/10/16 04:23:07  rgb
+ * Add stats for replaywin_errs, replaywin_max_sequence_difference,
+ * authentication errors, encryption size errors, encryption padding
+ * errors, and time since last packet.
+ *
+ * Revision 1.15  1999/10/16 00:29:11  rgb
+ * Added SA lifetime packet counting variables.
+ *
+ * Revision 1.14  1999/10/01 00:04:14  rgb
+ * Added tdb structure locking.
+ * Add function to initialize tdb hash table.
+ *
+ * Revision 1.13  1999/04/29 15:20:57  rgb
+ * dd return values to init and cleanup functions.
+ * Eliminate unnessessary usage of tdb_xform member to further switch
+ * away from the transform switch to the algorithm switch.
+ * Change gettdb parameter to a pointer to reduce stack loading and
+ * facilitate parameter sanity checking.
+ * Add a parameter to tdbcleanup to be able to delete a class of SAs.
+ *
+ * Revision 1.12  1999/04/15 15:37:25  rgb
+ * Forward check changes from POST1_00 branch.
+ *
+ * Revision 1.9.2.2  1999/04/13 20:35:57  rgb
+ * Fix spelling mistake in comment.
+ *
+ * Revision 1.9.2.1  1999/03/30 17:13:52  rgb
+ * Extend struct tdb to support pfkey.
+ *
+ * Revision 1.11  1999/04/11 00:29:01  henry
+ * GPL boilerplate
+ *
+ * Revision 1.10  1999/04/06 04:54:28  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.9  1999/01/26 02:09:31  rgb
+ * Removed CONFIG_IPSEC_ALGO_SWITCH macro.
+ * Removed dead code.
+ *
+ * Revision 1.8  1999/01/22 06:29:35  rgb
+ * Added algorithm switch code.
+ * Cruft clean-out.
+ *
+ * Revision 1.7  1998/11/10 05:37:35  rgb
+ * Add support for SA direction flag.
+ *
+ * Revision 1.6  1998/10/19 14:44:29  rgb
+ * Added inclusion of freeswan.h.
+ * sa_id structure implemented and used: now includes protocol.
+ *
+ * Revision 1.5  1998/08/12 00:12:30  rgb
+ * Added macros for new xforms.  Added prototypes for new xforms.
+ *
+ * Revision 1.4  1998/07/28 00:04:20  rgb
+ * Add macro for clearing the SA table.
+ *
+ * Revision 1.3  1998/07/14 18:06:46  rgb
+ * Added #ifdef __KERNEL__ directives to restrict scope of header.
+ *
+ * Revision 1.2  1998/06/23 03:02:19  rgb
+ * Created a prototype for ipsec_tdbcleanup when it was moved from
+ * ipsec_init.c.
+ *
+ * Revision 1.1  1998/06/18 21:27:51  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.4  1998/06/11 05:55:31  rgb
+ * Added transform version string pointer to xformsw structure definition.
+ * Added extern declarations for transform version strings.
+ *
+ * Revision 1.3  1998/05/18 22:02:54  rgb
+ * Modify the *_zeroize function prototypes to include one parameter.
+ *
+ * Revision 1.2  1998/04/21 21:29:08  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.1  1998/04/09 03:06:14  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:06  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.5  1997/06/03 04:24:48  ji
+ * Added ESP-3DES-MD5-96
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * Added new transforms.
+ *
+ * Revision 0.3  1996/11/20 14:39:04  ji
+ * Minor cleanups.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
diff --git a/linux/include/freeswan/ipsec_xmit.h b/linux/include/freeswan/ipsec_xmit.h
new file mode 100644
index 000000000..033984886
--- /dev/null
+++ b/linux/include/freeswan/ipsec_xmit.h
@@ -0,0 +1,140 @@
+/*
+ * IPSEC tunneling code
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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/gpl.txt>.
+ * 
+ * This program 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 General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_xmit.h,v 1.3 2004/06/13 19:37:07 as Exp $
+ */
+
+#include "freeswan/ipsec_sa.h"
+
+enum ipsec_xmit_value
+{
+	IPSEC_XMIT_STOLEN=2,
+	IPSEC_XMIT_PASS=1,
+	IPSEC_XMIT_OK=0,
+	IPSEC_XMIT_ERRMEMALLOC=-1,
+	IPSEC_XMIT_ESP_BADALG=-2,
+	IPSEC_XMIT_BADPROTO=-3,
+	IPSEC_XMIT_ESP_PUSHPULLERR=-4,
+	IPSEC_XMIT_BADLEN=-5,
+	IPSEC_XMIT_AH_BADALG=-6,
+	IPSEC_XMIT_SAIDNOTFOUND=-7,
+	IPSEC_XMIT_SAIDNOTLIVE=-8,
+	IPSEC_XMIT_REPLAYROLLED=-9,
+	IPSEC_XMIT_LIFETIMEFAILED=-10,
+	IPSEC_XMIT_CANNOTFRAG=-11,
+	IPSEC_XMIT_MSSERR=-12,
+	IPSEC_XMIT_ERRSKBALLOC=-13,
+	IPSEC_XMIT_ENCAPFAIL=-14,
+	IPSEC_XMIT_NODEV=-15,
+	IPSEC_XMIT_NOPRIVDEV=-16,
+	IPSEC_XMIT_NOPHYSDEV=-17,
+	IPSEC_XMIT_NOSKB=-18,
+	IPSEC_XMIT_NOIPV6=-19,
+	IPSEC_XMIT_NOIPOPTIONS=-20,
+	IPSEC_XMIT_TTLEXPIRED=-21,
+	IPSEC_XMIT_BADHHLEN=-22,
+	IPSEC_XMIT_PUSHPULLERR=-23,
+	IPSEC_XMIT_ROUTEERR=-24,
+	IPSEC_XMIT_RECURSDETECT=-25,
+	IPSEC_XMIT_IPSENDFAILURE=-26,
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+	IPSEC_XMIT_ESPUDP=-27,
+#endif	
+};
+
+struct ipsec_xmit_state
+{
+	struct sk_buff *skb;		/* working skb pointer */
+	struct device *dev;		/* working dev pointer */
+	struct ipsecpriv *prv;		/* Our device' private space */
+	struct sk_buff *oskb;		/* Original skb pointer */
+	struct net_device_stats *stats;	/* This device's statistics */
+	struct iphdr  *iph;		/* Our new IP header */
+	__u32   newdst;			/* The other SG's IP address */
+	__u32	orgdst;			/* Original IP destination address */
+	__u32	orgedst;		/* 1st SG's IP address */
+	__u32   newsrc;			/* The new source SG's IP address */
+	__u32	orgsrc;			/* Original IP source address */
+	__u32	innersrc;		/* Innermost IP source address */
+	int	iphlen;			/* IP header length */
+	int	pyldsz;			/* upper protocol payload size */
+	int	headroom;
+	int	tailroom;
+	int     max_headroom;		/* The extra header space needed */
+	int	max_tailroom;		/* The extra stuffing needed */
+	int     ll_headroom;		/* The extra link layer hard_header space needed */
+	int     tot_headroom;		/* The total header space needed */
+	int	tot_tailroom;		/* The totalstuffing needed */
+	__u8	*saved_header;		/* saved copy of the hard header */
+	unsigned short   sport, dport;
+
+	struct sockaddr_encap matcher;	/* eroute search key */
+	struct eroute *eroute;
+	struct ipsec_sa *ipsp, *ipsq;	/* ipsec_sa pointers */
+	char sa_txt[SATOA_BUF];
+	size_t sa_len;
+	int hard_header_stripped;	/* has the hard header been removed yet? */
+	int hard_header_len;
+	struct device *physdev;
+/*	struct device *virtdev; */
+	short physmtu;
+	short mtudiff;
+#ifdef NET_21
+	struct rtable *route;
+#endif /* NET_21 */
+	struct sa_id outgoing_said;
+#ifdef NET_21
+	int pass;
+#endif /* NET_21 */
+	int error;
+	uint32_t eroute_pid;
+	struct ipsec_sa ips;
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL	
+	uint8_t natt_type;
+	uint8_t natt_head;
+	uint16_t natt_sport;
+	uint16_t natt_dport;
+#endif		
+};
+
+#if 0 /* save for alg refactorisation */
+struct xform_functions
+{
+	enum ipsec_xmit_value (*checks)(struct ipsec_xmit_state *ixs,
+				       struct sk_buff *skb);
+        enum ipsec_xmit_value (*encrypt)(struct ipsec_xmit_state *ixs);
+
+	enum ipsec_xmit_value (*setup_auth)(struct ipsec_xmit_state *ixs,
+					   struct sk_buff *skb,
+					   __u32          *replay,
+					   unsigned char **authenticator);
+	enum ipsec_xmit_value (*calc_auth)(struct ipsec_xmit_state *ixs,
+					struct sk_buff *skb);
+};
+#endif
+
+enum ipsec_xmit_value
+ipsec_xmit_sanity_check_dev(struct ipsec_xmit_state *ixs);
+
+enum ipsec_xmit_value
+ipsec_xmit_sanity_check_skb(struct ipsec_xmit_state *ixs);
+
+enum ipsec_xmit_value
+ipsec_xmit_encap_bundle(struct ipsec_xmit_state *ixs);
+
+extern int ipsec_xmit_trap_count;
+extern int ipsec_xmit_trap_sendcount;
+
+extern void ipsec_extract_ports(struct iphdr * iph, struct sockaddr_encap * er);
diff --git a/linux/include/freeswan/radij.h b/linux/include/freeswan/radij.h
new file mode 100644
index 000000000..2a66093a0
--- /dev/null
+++ b/linux/include/freeswan/radij.h
@@ -0,0 +1,280 @@
+/*
+ * RCSID $Id: radij.h,v 1.1 2004/03/15 20:35:25 as Exp $
+ */
+
+/*
+ * This file is defived from ${SRC}/sys/net/radix.h of BSD 4.4lite
+ *
+ * Variable and procedure names have been modified so that they don't
+ * conflict with the original BSD code, as a small number of modifications
+ * have been introduced and we may want to reuse this code in BSD.
+ * 
+ * The `j' in `radij' is pronounced as a voiceless guttural (like a Greek
+ * chi or a German ch sound (as `doch', not as in `milch'), or even a 
+ * spanish j as in Juan.  It is not as far back in the throat like
+ * the corresponding Hebrew sound, nor is it a soft breath like the English h.
+ * It has nothing to do with the Dutch ij sound.
+ * 
+ * Here is the appropriate copyright notice:
+ */
+
+/*
+ * Copyright (c) 1988, 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)radix.h	8.1 (Berkeley) 6/10/93
+ */
+
+#ifndef _RADIJ_H_
+#define	_RADIJ_H_
+
+/* 
+#define RJ_DEBUG
+*/
+
+#ifdef __KERNEL__
+
+#ifndef __P
+#ifdef __STDC__
+#define __P(x)  x
+#else
+#define __P(x)  ()
+#endif
+#endif
+
+/*
+ * Radix search tree node layout.
+ */
+
+struct radij_node
+{
+	struct	radij_mask *rj_mklist;	/* list of masks contained in subtree */
+	struct	radij_node *rj_p;	/* parent */
+	short	rj_b;			/* bit offset; -1-index(netmask) */
+	char	rj_bmask;		/* node: mask for bit test*/
+	u_char	rj_flags;		/* enumerated next */
+#define RJF_NORMAL	1		/* leaf contains normal route */
+#define RJF_ROOT	2		/* leaf is root leaf for tree */
+#define RJF_ACTIVE	4		/* This node is alive (for rtfree) */
+	union {
+		struct {			/* leaf only data: */
+			caddr_t	rj_Key;	/* object of search */
+			caddr_t	rj_Mask;	/* netmask, if present */
+			struct	radij_node *rj_Dupedkey;
+		} rj_leaf;
+		struct {			/* node only data: */
+			int	rj_Off;		/* where to start compare */
+			struct	radij_node *rj_L;/* progeny */
+			struct	radij_node *rj_R;/* progeny */
+		}rj_node;
+	}		rj_u;
+#ifdef RJ_DEBUG
+	int rj_info;
+	struct radij_node *rj_twin;
+	struct radij_node *rj_ybro;
+#endif
+};
+
+#define rj_dupedkey rj_u.rj_leaf.rj_Dupedkey
+#define rj_key rj_u.rj_leaf.rj_Key
+#define rj_mask rj_u.rj_leaf.rj_Mask
+#define rj_off rj_u.rj_node.rj_Off
+#define rj_l rj_u.rj_node.rj_L
+#define rj_r rj_u.rj_node.rj_R
+
+/*
+ * Annotations to tree concerning potential routes applying to subtrees.
+ */
+
+extern struct radij_mask {
+	short	rm_b;			/* bit offset; -1-index(netmask) */
+	char	rm_unused;		/* cf. rj_bmask */
+	u_char	rm_flags;		/* cf. rj_flags */
+	struct	radij_mask *rm_mklist;	/* more masks to try */
+	caddr_t	rm_mask;		/* the mask */
+	int	rm_refs;		/* # of references to this struct */
+} *rj_mkfreelist;
+
+#define MKGet(m) {\
+	if (rj_mkfreelist) {\
+		m = rj_mkfreelist; \
+		rj_mkfreelist = (m)->rm_mklist; \
+	} else \
+		R_Malloc(m, struct radij_mask *, sizeof (*(m))); }\
+
+#define MKFree(m) { (m)->rm_mklist = rj_mkfreelist; rj_mkfreelist = (m);}
+
+struct radij_node_head {
+	struct	radij_node *rnh_treetop;
+	int	rnh_addrsize;		/* permit, but not require fixed keys */
+	int	rnh_pktsize;		/* permit, but not require fixed keys */
+#if 0
+	struct	radij_node *(*rnh_addaddr)	/* add based on sockaddr */
+		__P((void *v, void *mask,
+		     struct radij_node_head *head, struct radij_node nodes[]));
+#endif
+	int (*rnh_addaddr)	/* add based on sockaddr */
+		__P((void *v, void *mask,
+		     struct radij_node_head *head, struct radij_node nodes[]));
+	struct	radij_node *(*rnh_addpkt)	/* add based on packet hdr */
+		__P((void *v, void *mask,
+		     struct radij_node_head *head, struct radij_node nodes[]));
+#if 0
+	struct	radij_node *(*rnh_deladdr)	/* remove based on sockaddr */
+		__P((void *v, void *mask, struct radij_node_head *head));
+#endif
+	int (*rnh_deladdr)	/* remove based on sockaddr */
+		__P((void *v, void *mask, struct radij_node_head *head, struct radij_node **node));
+	struct	radij_node *(*rnh_delpkt)	/* remove based on packet hdr */
+		__P((void *v, void *mask, struct radij_node_head *head));
+	struct	radij_node *(*rnh_matchaddr)	/* locate based on sockaddr */
+		__P((void *v, struct radij_node_head *head));
+	struct	radij_node *(*rnh_matchpkt)	/* locate based on packet hdr */
+		__P((void *v, struct radij_node_head *head));
+	int	(*rnh_walktree)			/* traverse tree */
+		__P((struct radij_node_head *head, int (*f)(struct radij_node *rn, void *w), void *w));
+	struct	radij_node rnh_nodes[3];	/* empty tree for common case */
+};
+
+
+#define Bcmp(a, b, n) memcmp(((caddr_t)(b)), ((caddr_t)(a)), (unsigned)(n))
+#define Bcopy(a, b, n) memmove(((caddr_t)(b)), ((caddr_t)(a)), (unsigned)(n))
+#define Bzero(p, n) memset((caddr_t)(p), 0, (unsigned)(n))
+#define R_Malloc(p, t, n) ((p = (t) kmalloc((size_t)(n), GFP_ATOMIC)), Bzero((p),(n)))
+#define Free(p) kfree((caddr_t)p);
+
+void	 rj_init __P((void));
+int	 rj_inithead __P((void **, int));
+int	 rj_refines __P((void *, void *));
+int	 rj_walktree __P((struct radij_node_head *head, int (*f)(struct radij_node *rn, void *w), void *w));
+struct radij_node
+	 *rj_addmask __P((void *, int, int)) /* , rgb */ ;
+int /* * */ rj_addroute __P((void *, void *, struct radij_node_head *,
+			struct radij_node [2])) /* , rgb */ ;
+int /* * */ rj_delete __P((void *, void *, struct radij_node_head *, struct radij_node **)) /* , rgb */ ;
+struct radij_node /* rgb */
+	 *rj_insert __P((void *, struct radij_node_head *, int *,
+			struct radij_node [2])),
+	 *rj_match __P((void *, struct radij_node_head *)),
+	 *rj_newpair __P((void *, int, struct radij_node[2])),
+	 *rj_search __P((void *, struct radij_node *)),
+	 *rj_search_m __P((void *, struct radij_node *, void *));
+
+void rj_deltree(struct radij_node_head *);
+void rj_delnodes(struct radij_node *);
+void rj_free_mkfreelist(void);
+int radijcleartree(void);
+int radijcleanup(void);
+
+extern struct radij_node_head *mask_rjhead;
+extern int maj_keylen;
+#endif /* __KERNEL__ */
+
+#endif /* _RADIJ_H_ */
+
+
+/*
+ * $Log: radij.h,v $
+ * Revision 1.1  2004/03/15 20:35:25  as
+ * added files from freeswan-2.04-x509-1.5.3
+ *
+ * Revision 1.12  2002/04/24 07:36:48  mcr
+ * Moved from ./klips/net/ipsec/radij.h,v
+ *
+ * Revision 1.11  2001/09/20 15:33:00  rgb
+ * Min/max cleanup.
+ *
+ * Revision 1.10  1999/11/18 04:09:20  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ *
+ * Revision 1.9  1999/05/05 22:02:33  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.8  1999/04/29 15:24:58  rgb
+ * Add check for existence of macros min/max.
+ *
+ * Revision 1.7  1999/04/11 00:29:02  henry
+ * GPL boilerplate
+ *
+ * Revision 1.6  1999/04/06 04:54:29  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.5  1999/01/22 06:30:32  rgb
+ * 64-bit clean-up.
+ *
+ * Revision 1.4  1998/11/30 13:22:55  rgb
+ * Rationalised all the klips kernel file headers.  They are much shorter
+ * now and won't conflict under RH5.2.
+ *
+ * Revision 1.3  1998/10/25 02:43:27  rgb
+ * Change return type on rj_addroute and rj_delete and add and argument
+ * to the latter to be able to transmit more infomation about errors.
+ *
+ * Revision 1.2  1998/07/14 18:09:51  rgb
+ * Add a routine to clear eroute table.
+ * Added #ifdef __KERNEL__ directives to restrict scope of header.
+ *
+ * Revision 1.1  1998/06/18 21:30:22  henry
+ * move sources from klips/src to klips/net/ipsec to keep stupid kernel
+ * build scripts happier about symlinks
+ *
+ * Revision 1.4  1998/05/25 20:34:16  rgb
+ * Remove temporary ipsec_walk, rj_deltree and rj_delnodes functions.
+ *
+ * Rename ipsec_rj_walker (ipsec_walk) to ipsec_rj_walker_procprint and
+ * add ipsec_rj_walker_delete.
+ *
+ * Recover memory for eroute table on unload of module.
+ *
+ * Revision 1.3  1998/04/22 16:51:37  rgb
+ * Tidy up radij debug code from recent rash of modifications to debug code.
+ *
+ * Revision 1.2  1998/04/14 17:30:38  rgb
+ * Fix up compiling errors for radij tree memory reclamation.
+ *
+ * Revision 1.1  1998/04/09 03:06:16  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:04  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:44:45  ji
+ * Release update only.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
diff --git a/linux/include/mast.h b/linux/include/mast.h
new file mode 100644
index 000000000..626559b59
--- /dev/null
+++ b/linux/include/mast.h
@@ -0,0 +1,33 @@
+struct mast_callbacks {
+  int (*packet_encap)(struct device *mast, void *context,
+		      struct sk_buff *skb, int flowref);
+  int (*link_inquire)(struct device *mast, void *context);
+};
+
+
+struct device *mast_init (int family,
+			  struct mast_callbacks *callbacks,
+			  unsigned int flags,
+			  unsigned int desired_unit,
+			  unsigned int max_flowref,
+			  void *context);
+
+int mast_destroy(struct device *mast);
+
+int mast_recv(struct device *mast, struct sk_buff *skb, int flowref);
+
+/* free this skb as being useless, increment failure count. */
+int mast_toast(struct device *mast, struct sk_buff *skb, int flowref);
+
+int mast_linkstat (struct device *mast, int flowref,
+		   int status);
+
+int mast_setreference (struct device *mast,
+		       int defaultSA);
+
+int mast_setneighbor (struct device *mast,
+		      struct sockaddr *source,
+		      struct sockaddr *destination,
+		      int flowref);
+
+
diff --git a/linux/include/pfkey.h b/linux/include/pfkey.h
new file mode 100644
index 000000000..f858cd95e
--- /dev/null
+++ b/linux/include/pfkey.h
@@ -0,0 +1,498 @@
+/*
+ * FreeS/WAN specific PF_KEY headers
+ * Copyright (C) 1999, 2000, 2001  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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/gpl.txt>.
+ * 
+ * This program 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 General Public License
+ * for more details.
+ *
+ * RCSID $Id: pfkey.h,v 1.2 2004/03/22 21:53:18 as Exp $
+ */
+
+#ifndef __NET_IPSEC_PF_KEY_H
+#define __NET_IPSEC_PF_KEY_H
+#ifdef __KERNEL__
+extern struct proto_ops pfkey_proto_ops;
+typedef struct sock pfkey_sock;
+extern int debug_pfkey;
+
+extern /* void */ int pfkey_init(void);
+extern /* void */ int pfkey_cleanup(void);
+
+extern struct sock *pfkey_sock_list;
+struct socket_list
+{
+	struct socket *socketp;
+	struct socket_list *next;
+};
+extern int pfkey_list_insert_socket(struct socket*, struct socket_list**);
+extern int pfkey_list_remove_socket(struct socket*, struct socket_list**);
+extern struct socket_list *pfkey_open_sockets;
+extern struct socket_list *pfkey_registered_sockets[SADB_SATYPE_MAX+1];
+
+/* 
+ *	There is a field-by-field copy in klips/net/ipsec/ipsec_alg.h
+ *	please keep in sync until we migrate all support stuff
+ *	to ipsec_alg objects
+ */
+struct supported
+{
+	uint16_t supported_alg_exttype;
+	uint8_t supported_alg_id;
+	uint8_t supported_alg_ivlen;
+	uint16_t supported_alg_minbits;
+	uint16_t supported_alg_maxbits;
+};
+extern struct supported_list *pfkey_supported_list[SADB_SATYPE_MAX+1];
+struct supported_list
+{
+	struct supported *supportedp;
+	struct supported_list *next;
+};
+extern int pfkey_list_insert_supported(struct supported*, struct supported_list**);
+extern int pfkey_list_remove_supported(struct supported*, struct supported_list**);
+
+struct sockaddr_key
+{
+	uint16_t	key_family;	/* PF_KEY */
+	uint16_t	key_pad;	/* not used */
+	uint32_t	key_pid;	/* process ID */
+};
+
+struct pfkey_extracted_data
+{
+	struct ipsec_sa* ips;
+	struct ipsec_sa* ips2;
+	struct eroute *eroute;
+};
+
+extern int
+pfkey_alloc_eroute(struct eroute** eroute);
+
+extern int
+pfkey_sa_process(struct sadb_ext *pfkey_ext,
+		 struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_lifetime_process(struct sadb_ext *pfkey_ext,
+		       struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_address_process(struct sadb_ext *pfkey_ext,
+		      struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_key_process(struct sadb_ext *pfkey_ext,
+		  struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_ident_process(struct sadb_ext *pfkey_ext,
+		    struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_sens_process(struct sadb_ext *pfkey_ext,
+		   struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_prop_process(struct sadb_ext *pfkey_ext,
+		   struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_supported_process(struct sadb_ext *pfkey_ext,
+			struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_spirange_process(struct sadb_ext *pfkey_ext,
+		       struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_x_kmprivate_process(struct sadb_ext *pfkey_ext,
+			  struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_x_satype_process(struct sadb_ext *pfkey_ext,
+		       struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_x_debug_process(struct sadb_ext *pfkey_ext,
+		      struct pfkey_extracted_data* extr);
+
+extern int pfkey_register_reply(int satype, struct sadb_msg *);
+extern int pfkey_upmsg(struct socket *, struct sadb_msg *);
+extern int pfkey_expire(struct ipsec_sa *, int);
+extern int pfkey_acquire(struct ipsec_sa *);
+#else /* ! __KERNEL__ */
+
+extern void (*pfkey_debug_func)(const char *message, ...);
+
+#endif /* __KERNEL__ */
+
+extern uint8_t satype2proto(uint8_t satype);
+extern uint8_t proto2satype(uint8_t proto);
+extern char* satype2name(uint8_t satype);
+extern char* proto2name(uint8_t proto);
+
+struct key_opt
+{
+	uint32_t	key_pid;	/* process ID */
+	struct sock	*sk;
+};
+
+#define key_pid(sk) ((struct key_opt*)&((sk)->protinfo))->key_pid
+
+#define IPSEC_PFKEYv2_ALIGN (sizeof(uint64_t)/sizeof(uint8_t))
+#define BITS_PER_OCTET 8
+#define OCTETBITS 8
+#define PFKEYBITS 64
+#define DIVUP(x,y) ((x + y -1) / y) /* divide, rounding upwards */
+#define ALIGN_N(x,y) (DIVUP(x,y) * y) /* align on y boundary */
+
+#define PFKEYv2_MAX_MSGSIZE 4096
+
+/*
+ * PF_KEYv2 permitted and required extensions in and out bitmaps
+ */
+struct pf_key_ext_parsers_def {
+	int  (*parser)(struct sadb_ext*);
+	char  *parser_name;
+};
+
+
+extern unsigned int extensions_bitmaps[2/*in/out*/][2/*perm/req*/][SADB_MAX + 1/*ext*/];
+#define EXT_BITS_IN 0
+#define EXT_BITS_OUT 1
+#define EXT_BITS_PERM 0
+#define EXT_BITS_REQ 1
+
+extern void pfkey_extensions_init(struct sadb_ext *extensions[SADB_EXT_MAX + 1]);
+extern void pfkey_extensions_free(struct sadb_ext *extensions[SADB_EXT_MAX + 1]);
+extern void pfkey_msg_free(struct sadb_msg **pfkey_msg);
+
+extern int pfkey_msg_parse(struct sadb_msg *pfkey_msg,
+			   struct pf_key_ext_parsers_def *ext_parsers[],
+			   struct sadb_ext **extensions,
+			   int dir);
+
+/*
+ * PF_KEYv2 build function prototypes
+ */
+
+int
+pfkey_msg_hdr_build(struct sadb_ext**	pfkey_ext,
+		    uint8_t		msg_type,
+		    uint8_t		satype,
+		    uint8_t		msg_errno,
+		    uint32_t		seq,
+		    uint32_t		pid);
+
+int
+pfkey_sa_ref_build(struct sadb_ext **	pfkey_ext,
+	       uint16_t			exttype,
+	       uint32_t			spi, /* in network order */
+	       uint8_t			replay_window,
+	       uint8_t			sa_state,
+	       uint8_t			auth,
+	       uint8_t			encrypt,
+	       uint32_t			flags,
+	       uint32_t/*IPsecSAref_t*/	ref);
+
+int
+pfkey_sa_build(struct sadb_ext **	pfkey_ext,
+	       uint16_t			exttype,
+	       uint32_t			spi, /* in network order */
+	       uint8_t			replay_window,
+	       uint8_t			sa_state,
+	       uint8_t			auth,
+	       uint8_t			encrypt,
+	       uint32_t			flags);
+
+int
+pfkey_lifetime_build(struct sadb_ext **	pfkey_ext,
+		     uint16_t		exttype,
+		     uint32_t		allocations,
+		     uint64_t		bytes,
+		     uint64_t		addtime,
+		     uint64_t		usetime,
+		     uint32_t		packets);
+
+int
+pfkey_address_build(struct sadb_ext**	pfkey_ext,
+		    uint16_t		exttype,
+		    uint8_t		proto,
+		    uint8_t		prefixlen,
+		    struct sockaddr*	address);
+
+int
+pfkey_key_build(struct sadb_ext**	pfkey_ext,
+		uint16_t		exttype,
+		uint16_t		key_bits,
+		char*			key);
+
+int
+pfkey_ident_build(struct sadb_ext**	pfkey_ext,
+		  uint16_t		exttype,
+		  uint16_t		ident_type,
+		  uint64_t		ident_id,
+		  uint8_t               ident_len,
+		  char*			ident_string);
+
+#ifdef NAT_TRAVERSAL
+#ifdef __KERNEL__
+extern int pfkey_nat_t_new_mapping(struct ipsec_sa *, struct sockaddr *, __u16);
+extern int pfkey_x_nat_t_type_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr);
+extern int pfkey_x_nat_t_port_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr);
+#endif /* __KERNEL__ */
+int
+pfkey_x_nat_t_type_build(struct sadb_ext**  pfkey_ext,
+            uint8_t         type);
+int
+pfkey_x_nat_t_port_build(struct sadb_ext**  pfkey_ext,
+            uint16_t         exttype,
+            uint16_t         port);
+#endif
+
+int
+pfkey_sens_build(struct sadb_ext**	pfkey_ext,
+		 uint32_t		dpd,
+		 uint8_t		sens_level,
+		 uint8_t		sens_len,
+		 uint64_t*		sens_bitmap,
+		 uint8_t		integ_level,
+		 uint8_t		integ_len,
+		 uint64_t*		integ_bitmap);
+
+int pfkey_x_protocol_build(struct sadb_ext **, uint8_t);
+
+
+int
+pfkey_prop_build(struct sadb_ext**	pfkey_ext,
+		 uint8_t		replay,
+		 unsigned int		comb_num,
+		 struct sadb_comb*	comb);
+
+int
+pfkey_supported_build(struct sadb_ext**	pfkey_ext,
+		      uint16_t		exttype,
+		      unsigned int	alg_num,
+		      struct sadb_alg*	alg);
+
+int
+pfkey_spirange_build(struct sadb_ext**	pfkey_ext,
+		     uint16_t		exttype,
+		     uint32_t		min,
+		     uint32_t		max);
+
+int
+pfkey_x_kmprivate_build(struct sadb_ext**	pfkey_ext);
+
+int
+pfkey_x_satype_build(struct sadb_ext**	pfkey_ext,
+		     uint8_t		satype);
+
+int
+pfkey_x_debug_build(struct sadb_ext**	pfkey_ext,
+		    uint32_t            tunnel,
+		    uint32_t		netlink,
+		    uint32_t		xform,
+		    uint32_t		eroute,
+		    uint32_t		spi,
+		    uint32_t		radij,
+		    uint32_t		esp,
+		    uint32_t		ah,
+		    uint32_t		rcv,
+		    uint32_t            pfkey,
+		    uint32_t            ipcomp,
+		    uint32_t            verbose);
+
+int
+pfkey_msg_build(struct sadb_msg**	pfkey_msg,
+		struct sadb_ext*	extensions[],
+		int			dir);
+
+/* in pfkey_v2_debug.c - routines to decode numbers -> strings */
+const char *
+pfkey_v2_sadb_ext_string(int extnum);
+
+const char *
+pfkey_v2_sadb_type_string(int sadb_type);
+
+
+#endif /* __NET_IPSEC_PF_KEY_H */
+
+/*
+ * $Log: pfkey.h,v $
+ * Revision 1.2  2004/03/22 21:53:18  as
+ * merged alg-0.8.1 branch with HEAD
+ *
+ * Revision 1.1.2.1.2.1  2004/03/16 09:48:18  as
+ * alg-0.8.1rc12 patch merged
+ *
+ * Revision 1.1.2.1  2004/03/15 22:30:06  as
+ * nat-0.6c patch merged
+ *
+ * Revision 1.1  2004/03/15 20:35:25  as
+ * added files from freeswan-2.04-x509-1.5.3
+ *
+ * Revision 1.42  2003/08/25 22:08:19  mcr
+ * 	removed pfkey_proto_init() from pfkey.h for 2.6 support.
+ *
+ * Revision 1.41  2003/05/07 17:28:57  mcr
+ * 	new function pfkey_debug_func added for us in debugging from
+ * 	pfkey library.
+ *
+ * Revision 1.40  2003/01/30 02:31:34  rgb
+ *
+ * Convert IPsecSAref_t from signed to unsigned to fix apparent SAref exhaustion bug.
+ *
+ * Revision 1.39  2002/09/20 15:40:21  rgb
+ * Switch from pfkey_alloc_ipsec_sa() to ipsec_sa_alloc().
+ * Added ref parameter to pfkey_sa_build().
+ * Cleaned out unused cruft.
+ *
+ * Revision 1.38  2002/05/14 02:37:24  rgb
+ * Change all references to tdb, TDB or Tunnel Descriptor Block to ips,
+ * ipsec_sa or ipsec_sa.
+ * Added function prototypes for the functions moved to
+ * pfkey_v2_ext_process.c.
+ *
+ * Revision 1.37  2002/04/24 07:36:49  mcr
+ * Moved from ./lib/pfkey.h,v
+ *
+ * Revision 1.36  2002/01/20 20:34:49  mcr
+ * 	added pfkey_v2_sadb_type_string to decode sadb_type to string.
+ *
+ * Revision 1.35  2001/11/27 05:27:47  mcr
+ * 	pfkey parses are now maintained by a structure
+ * 	that includes their name for debug purposes.
+ *
+ * Revision 1.34  2001/11/26 09:23:53  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.33  2001/11/06 19:47:47  rgb
+ * Added packet parameter to lifetime and comb structures.
+ *
+ * Revision 1.32  2001/09/08 21:13:34  rgb
+ * Added pfkey ident extension support for ISAKMPd. (NetCelo)
+ *
+ * Revision 1.31  2001/06/14 19:35:16  rgb
+ * Update copyright date.
+ *
+ * Revision 1.30  2001/02/27 07:04:52  rgb
+ * Added satype2name prototype.
+ *
+ * Revision 1.29  2001/02/26 19:59:33  rgb
+ * Ditch unused sadb_satype2proto[], replaced by satype2proto().
+ *
+ * Revision 1.28  2000/10/10 20:10:19  rgb
+ * Added support for debug_ipcomp and debug_verbose to klipsdebug.
+ *
+ * Revision 1.27  2000/09/21 04:20:45  rgb
+ * Fixed array size off-by-one error.  (Thanks Svenning!)
+ *
+ * Revision 1.26  2000/09/12 03:26:05  rgb
+ * Added pfkey_acquire prototype.
+ *
+ * Revision 1.25  2000/09/08 19:21:28  rgb
+ * Fix pfkey_prop_build() parameter to be only single indirection.
+ *
+ * Revision 1.24  2000/09/01 18:46:42  rgb
+ * Added a supported algorithms array lists, one per satype and registered
+ * existing algorithms.
+ * Fixed pfkey_list_{insert,remove}_{socket,support}() to allow change to
+ * list.
+ *
+ * Revision 1.23  2000/08/27 01:55:26  rgb
+ * Define OCTETBITS and PFKEYBITS to avoid using 'magic' numbers in code.
+ *
+ * Revision 1.22  2000/08/20 21:39:23  rgb
+ * Added kernel prototypes for kernel funcitions pfkey_upmsg() and
+ * pfkey_expire().
+ *
+ * Revision 1.21  2000/08/15 17:29:23  rgb
+ * Fixes from SZI to untested pfkey_prop_build().
+ *
+ * Revision 1.20  2000/05/10 20:14:19  rgb
+ * Fleshed out sensitivity, proposal and supported extensions.
+ *
+ * Revision 1.19  2000/03/16 14:07:23  rgb
+ * Renamed ALIGN macro to avoid fighting with others in kernel.
+ *
+ * Revision 1.18  2000/01/22 23:24:06  rgb
+ * Added prototypes for proto2satype(), satype2proto() and proto2name().
+ *
+ * Revision 1.17  2000/01/21 06:26:59  rgb
+ * Converted from double tdb arguments to one structure (extr)
+ * containing pointers to all temporary information structures.
+ * Added klipsdebug switching capability.
+ * Dropped unused argument to pfkey_x_satype_build().
+ *
+ * Revision 1.16  1999/12/29 21:17:41  rgb
+ * Changed pfkey_msg_build() I/F to include a struct sadb_msg**
+ * parameter for cleaner manipulation of extensions[] and to guard
+ * against potential memory leaks.
+ * Changed the I/F to pfkey_msg_free() for the same reason.
+ *
+ * Revision 1.15  1999/12/09 23:12:54  rgb
+ * Added macro for BITS_PER_OCTET.
+ * Added argument to pfkey_sa_build() to do eroutes.
+ *
+ * Revision 1.14  1999/12/08 20:33:25  rgb
+ * Changed sa_family_t to uint16_t for 2.0.xx compatibility.
+ *
+ * Revision 1.13  1999/12/07 19:53:40  rgb
+ * Removed unused first argument from extension parsers.
+ * Changed __u* types to uint* to avoid use of asm/types.h and
+ * sys/types.h in userspace code.
+ * Added function prototypes for pfkey message and extensions
+ * initialisation and cleanup.
+ *
+ * Revision 1.12  1999/12/01 22:19:38  rgb
+ * Change pfkey_sa_build to accept an SPI in network byte order.
+ *
+ * Revision 1.11  1999/11/27 11:55:26  rgb
+ * Added extern sadb_satype2proto to enable moving protocol lookup table
+ * to lib/pfkey_v2_parse.c.
+ * Delete unused, moved typedefs.
+ * Add argument to pfkey_msg_parse() for direction.
+ * Consolidated the 4 1-d extension bitmap arrays into one 4-d array.
+ *
+ * Revision 1.10  1999/11/23 22:29:21  rgb
+ * This file has been moved in the distribution from klips/net/ipsec to
+ * lib.
+ * Add macros for dealing with alignment and rounding up more opaquely.
+ * The uint<n>_t type defines have been moved to freeswan.h to avoid
+ * chicken-and-egg problems.
+ * Add macros for dealing with alignment and rounding up more opaque.
+ * Added prototypes for using extention header bitmaps.
+ * Added prototypes of all the build functions.
+ *
+ * Revision 1.9  1999/11/20 21:59:48  rgb
+ * Moved socketlist type declarations and prototypes for shared use.
+ * Slightly modified scope of sockaddr_key declaration.
+ *
+ * Revision 1.8  1999/11/17 14:34:25  rgb
+ * Protect sa_family_t from being used in userspace with GLIBC<2.
+ *
+ * Revision 1.7  1999/10/27 19:40:35  rgb
+ * Add a maximum PFKEY packet size macro.
+ *
+ * Revision 1.6  1999/10/26 16:58:58  rgb
+ * Created a sockaddr_key and key_opt socket extension structures.
+ *
+ * Revision 1.5  1999/06/10 05:24:41  rgb
+ * Renamed variables to reduce confusion.
+ *
+ * Revision 1.4  1999/04/29 15:21:11  rgb
+ * Add pfkey support to debugging.
+ * Add return values to init and cleanup functions.
+ *
+ * Revision 1.3  1999/04/15 17:58:07  rgb
+ * Add RCSID labels.
+ *
+ */
diff --git a/linux/include/pfkeyv2.h b/linux/include/pfkeyv2.h
new file mode 100644
index 000000000..48579e27a
--- /dev/null
+++ b/linux/include/pfkeyv2.h
@@ -0,0 +1,385 @@
+/*
+ * RCSID $Id: pfkeyv2.h,v 1.5 2004/10/04 22:43:56 as Exp $
+ */
+
+/*
+RFC 2367               PF_KEY Key Management API               July 1998
+
+
+Appendix D: Sample Header File
+
+This file defines structures and symbols for the PF_KEY Version 2
+key management interface. It was written at the U.S. Naval Research
+Laboratory. This file is in the public domain. The authors ask that
+you leave this credit intact on any copies of this file.
+*/
+#ifndef __PFKEY_V2_H
+#define __PFKEY_V2_H 1
+
+#define PF_KEY_V2 2
+#define PFKEYV2_REVISION        199806L
+
+#define SADB_RESERVED    0
+#define SADB_GETSPI      1
+#define SADB_UPDATE      2
+#define SADB_ADD         3
+#define SADB_DELETE      4
+#define SADB_GET         5
+#define SADB_ACQUIRE     6
+#define SADB_REGISTER    7
+#define SADB_EXPIRE      8
+#define SADB_FLUSH       9
+#define SADB_DUMP       10
+#define SADB_X_PROMISC  11
+#define SADB_X_PCHANGE  12
+#define SADB_X_GRPSA    13
+#define SADB_X_ADDFLOW	14
+#define SADB_X_DELFLOW	15
+#define SADB_X_DEBUG	16
+#ifdef NAT_TRAVERSAL
+#define SADB_X_NAT_T_NEW_MAPPING  17
+#define SADB_MAX                  17
+#else
+#define SADB_MAX        16
+#endif
+
+struct sadb_msg {
+  uint8_t sadb_msg_version;
+  uint8_t sadb_msg_type;
+  uint8_t sadb_msg_errno;
+  uint8_t sadb_msg_satype;
+  uint16_t sadb_msg_len;
+  uint16_t sadb_msg_reserved;
+  uint32_t sadb_msg_seq;
+  uint32_t sadb_msg_pid;
+};
+
+struct sadb_ext {
+  uint16_t sadb_ext_len;
+  uint16_t sadb_ext_type;
+};
+
+struct sadb_sa {
+  uint16_t sadb_sa_len;
+  uint16_t sadb_sa_exttype;
+  uint32_t sadb_sa_spi;
+  uint8_t sadb_sa_replay;
+  uint8_t sadb_sa_state;
+  uint8_t sadb_sa_auth;
+  uint8_t sadb_sa_encrypt;
+  uint32_t sadb_sa_flags;
+  uint32_t /*IPsecSAref_t*/ sadb_x_sa_ref; /* 32 bits */
+  uint8_t sadb_x_reserved[4];
+};
+
+struct sadb_sa_v1 {
+  uint16_t sadb_sa_len;
+  uint16_t sadb_sa_exttype;
+  uint32_t sadb_sa_spi;
+  uint8_t sadb_sa_replay;
+  uint8_t sadb_sa_state;
+  uint8_t sadb_sa_auth;
+  uint8_t sadb_sa_encrypt;
+  uint32_t sadb_sa_flags;
+};
+
+struct sadb_lifetime {
+  uint16_t sadb_lifetime_len;
+  uint16_t sadb_lifetime_exttype;
+  uint32_t sadb_lifetime_allocations;
+  uint64_t sadb_lifetime_bytes;
+  uint64_t sadb_lifetime_addtime;
+  uint64_t sadb_lifetime_usetime;
+  uint32_t sadb_x_lifetime_packets;
+  uint32_t sadb_x_lifetime_reserved;
+};
+
+struct sadb_address {
+  uint16_t sadb_address_len;
+  uint16_t sadb_address_exttype;
+  uint8_t sadb_address_proto;
+  uint8_t sadb_address_prefixlen;
+  uint16_t sadb_address_reserved;
+};
+
+struct sadb_key {
+  uint16_t sadb_key_len;
+  uint16_t sadb_key_exttype;
+  uint16_t sadb_key_bits;
+  uint16_t sadb_key_reserved;
+};
+
+struct sadb_ident {
+  uint16_t sadb_ident_len;
+  uint16_t sadb_ident_exttype;
+  uint16_t sadb_ident_type;
+  uint16_t sadb_ident_reserved;
+  uint64_t sadb_ident_id;
+};
+
+struct sadb_sens {
+  uint16_t sadb_sens_len;
+  uint16_t sadb_sens_exttype;
+  uint32_t sadb_sens_dpd;
+  uint8_t sadb_sens_sens_level;
+  uint8_t sadb_sens_sens_len;
+  uint8_t sadb_sens_integ_level;
+  uint8_t sadb_sens_integ_len;
+  uint32_t sadb_sens_reserved;
+};
+
+struct sadb_prop {
+  uint16_t sadb_prop_len;
+  uint16_t sadb_prop_exttype;
+  uint8_t sadb_prop_replay;
+  uint8_t sadb_prop_reserved[3];
+};
+
+struct sadb_comb {
+  uint8_t sadb_comb_auth;
+  uint8_t sadb_comb_encrypt;
+  uint16_t sadb_comb_flags;
+  uint16_t sadb_comb_auth_minbits;
+  uint16_t sadb_comb_auth_maxbits;
+  uint16_t sadb_comb_encrypt_minbits;
+  uint16_t sadb_comb_encrypt_maxbits;
+  uint32_t sadb_comb_reserved;
+  uint32_t sadb_comb_soft_allocations;
+  uint32_t sadb_comb_hard_allocations;
+  uint64_t sadb_comb_soft_bytes;
+  uint64_t sadb_comb_hard_bytes;
+  uint64_t sadb_comb_soft_addtime;
+  uint64_t sadb_comb_hard_addtime;
+  uint64_t sadb_comb_soft_usetime;
+  uint64_t sadb_comb_hard_usetime;
+  uint32_t sadb_x_comb_soft_packets;
+  uint32_t sadb_x_comb_hard_packets;
+};
+
+struct sadb_supported {
+  uint16_t sadb_supported_len;
+  uint16_t sadb_supported_exttype;
+  uint32_t sadb_supported_reserved;
+};
+
+struct sadb_alg {
+  uint8_t sadb_alg_id;
+  uint8_t sadb_alg_ivlen;
+  uint16_t sadb_alg_minbits;
+  uint16_t sadb_alg_maxbits;
+  uint16_t sadb_alg_reserved;
+};
+
+struct sadb_spirange {
+  uint16_t sadb_spirange_len;
+  uint16_t sadb_spirange_exttype;
+  uint32_t sadb_spirange_min;
+  uint32_t sadb_spirange_max;
+  uint32_t sadb_spirange_reserved;
+};
+
+struct sadb_x_kmprivate {
+  uint16_t sadb_x_kmprivate_len;
+  uint16_t sadb_x_kmprivate_exttype;
+  uint32_t sadb_x_kmprivate_reserved;
+};
+
+struct sadb_x_satype {
+  uint16_t sadb_x_satype_len;
+  uint16_t sadb_x_satype_exttype;
+  uint8_t sadb_x_satype_satype;
+  uint8_t sadb_x_satype_reserved[3];
+};
+  
+struct sadb_x_policy {
+  uint16_t sadb_x_policy_len;
+  uint16_t sadb_x_policy_exttype;
+  uint16_t sadb_x_policy_type;
+  uint8_t sadb_x_policy_dir;
+  uint8_t sadb_x_policy_reserved;
+  uint32_t sadb_x_policy_id;
+  uint32_t sadb_x_policy_reserved2;
+};
+ 
+struct sadb_x_debug {
+  uint16_t sadb_x_debug_len;
+  uint16_t sadb_x_debug_exttype;
+  uint32_t sadb_x_debug_tunnel;
+  uint32_t sadb_x_debug_netlink;
+  uint32_t sadb_x_debug_xform;
+  uint32_t sadb_x_debug_eroute;
+  uint32_t sadb_x_debug_spi;
+  uint32_t sadb_x_debug_radij;
+  uint32_t sadb_x_debug_esp;
+  uint32_t sadb_x_debug_ah;
+  uint32_t sadb_x_debug_rcv;
+  uint32_t sadb_x_debug_pfkey;
+  uint32_t sadb_x_debug_ipcomp;
+  uint32_t sadb_x_debug_verbose;
+  uint8_t sadb_x_debug_reserved[4];
+};
+
+#ifdef NAT_TRAVERSAL
+struct sadb_x_nat_t_type {
+  uint16_t sadb_x_nat_t_type_len;
+  uint16_t sadb_x_nat_t_type_exttype;
+  uint8_t sadb_x_nat_t_type_type;
+  uint8_t sadb_x_nat_t_type_reserved[3];
+};
+struct sadb_x_nat_t_port {
+  uint16_t sadb_x_nat_t_port_len;
+  uint16_t sadb_x_nat_t_port_exttype;
+  uint16_t sadb_x_nat_t_port_port;
+  uint16_t sadb_x_nat_t_port_reserved;
+};
+#endif
+  
+/*
+ * A protocol structure for passing through the transport level
+ * protocol.  It contains more fields than are actually used/needed
+ * but it is this way to be compatible with the structure used in
+ * OpenBSD (http://www.openbsd.org/cgi-bin/cvsweb/src/sys/net/pfkeyv2.h)
+ */
+struct sadb_protocol {
+  uint16_t sadb_protocol_len;
+  uint16_t sadb_protocol_exttype;
+  uint8_t  sadb_protocol_proto;
+  uint8_t  sadb_protocol_direction;
+  uint8_t  sadb_protocol_flags;
+  uint8_t  sadb_protocol_reserved2;
+};
+
+#define SADB_EXT_RESERVED             0
+#define SADB_EXT_SA                   1
+#define SADB_EXT_LIFETIME_CURRENT     2
+#define SADB_EXT_LIFETIME_HARD        3
+#define SADB_EXT_LIFETIME_SOFT        4
+#define SADB_EXT_ADDRESS_SRC          5
+#define SADB_EXT_ADDRESS_DST          6
+#define SADB_EXT_ADDRESS_PROXY        7
+#define SADB_EXT_KEY_AUTH             8
+#define SADB_EXT_KEY_ENCRYPT          9
+#define SADB_EXT_IDENTITY_SRC         10
+#define SADB_EXT_IDENTITY_DST         11
+#define SADB_EXT_SENSITIVITY          12
+#define SADB_EXT_PROPOSAL             13
+#define SADB_EXT_SUPPORTED_AUTH       14
+#define SADB_EXT_SUPPORTED_ENCRYPT    15
+#define SADB_EXT_SPIRANGE             16
+#define SADB_X_EXT_KMPRIVATE          17
+#define SADB_X_EXT_SATYPE2            18
+#ifdef KERNEL26_HAS_KAME_DUPLICATES
+#define SADB_X_EXT_POLICY             18
+#endif
+#define SADB_X_EXT_SA2                19
+#define SADB_X_EXT_ADDRESS_DST2       20
+#define SADB_X_EXT_ADDRESS_SRC_FLOW   21
+#define SADB_X_EXT_ADDRESS_DST_FLOW   22
+#define SADB_X_EXT_ADDRESS_SRC_MASK   23
+#define SADB_X_EXT_ADDRESS_DST_MASK   24
+#define SADB_X_EXT_DEBUG              25
+#define SADB_X_EXT_PROTOCOL           26
+#ifdef NAT_TRAVERSAL
+#define SADB_X_EXT_NAT_T_TYPE         27
+#define SADB_X_EXT_NAT_T_SPORT        28
+#define SADB_X_EXT_NAT_T_DPORT        29
+#define SADB_X_EXT_NAT_T_OA           30
+#define SADB_EXT_MAX                  30
+#else
+#define SADB_EXT_MAX                  26
+#endif
+
+/* SADB_X_DELFLOW required over and above SADB_X_SAFLAGS_CLEARFLOW */
+#define SADB_X_EXT_ADDRESS_DELFLOW \
+	( (1<<SADB_X_EXT_ADDRESS_SRC_FLOW) \
+	| (1<<SADB_X_EXT_ADDRESS_DST_FLOW) \
+	| (1<<SADB_X_EXT_ADDRESS_SRC_MASK) \
+	| (1<<SADB_X_EXT_ADDRESS_DST_MASK))
+
+#define SADB_SATYPE_UNSPEC    0
+#define SADB_SATYPE_AH        2
+#define SADB_SATYPE_ESP       3
+#define SADB_SATYPE_RSVP      5
+#define SADB_SATYPE_OSPFV2    6
+#define SADB_SATYPE_RIPV2     7
+#define SADB_SATYPE_MIP       8
+#define SADB_X_SATYPE_IPIP    9
+#ifdef KERNEL26_HAS_KAME_DUPLICATES
+#define SADB_X_SATYPE_IPCOMP  9   /* ICK! */
+#endif
+#define SADB_X_SATYPE_COMP    10
+#define SADB_X_SATYPE_INT     11
+#define SADB_SATYPE_MAX       11
+
+#define SADB_SASTATE_LARVAL   0
+#define SADB_SASTATE_MATURE   1
+#define SADB_SASTATE_DYING    2
+#define SADB_SASTATE_DEAD     3
+#define SADB_SASTATE_MAX      3
+
+#define SADB_SAFLAGS_PFS		1
+#define SADB_X_SAFLAGS_REPLACEFLOW	2
+#define SADB_X_SAFLAGS_CLEARFLOW	4
+#define SADB_X_SAFLAGS_INFLOW		8
+
+/* not obvious, but these are the same values as used in isakmp,
+ * and in freeswan/ipsec_policy.h. If you need to add any, they
+ * should be added as according to
+ *   http://www.iana.org/assignments/isakmp-registry
+ *
+ * and if not, then please try to use a private-use value, and
+ * consider asking IANA to assign a value.
+ */
+#define SADB_AALG_NONE                  0
+#define SADB_AALG_MD5_HMAC		2
+#define SADB_AALG_SHA1_HMAC		3
+#define SADB_AALG_DES_MAC		4
+#define SADB_AALG_SHA2_256_HMAC		5
+#define SADB_AALG_SHA2_384_HMAC		6
+#define SADB_AALG_SHA2_512_HMAC		7
+#define SADB_AALG_RIPEMD_160_HMAC	8
+#define SADB_AALG_AES_XCBC_MAC		9
+#define SADB_X_AALG_NULL		251	/* kame */
+#define SADB_AALG_MAX			251
+
+#define SADB_EALG_NONE			0
+#define SADB_EALG_DES_CBC		2
+#define SADB_EALG_3DES_CBC		3
+#define SADB_EALG_RC5_CBC		4
+#define SADB_EALG_IDEA_CBC		5
+#define SADB_EALG_CAST_CBC		6
+#define SADB_EALG_BLOWFISH_CBC		7
+#define SADB_EALG_NULL			11
+#define SADB_EALG_AES_CBC		12
+#define SADB_EALG_AES_CTR		13
+#define SADB_X_EALG_SERPENT_CBC		252
+#define SADB_X_EALG_TWOFISH_CBC		253
+#define SADB_EALG_MAX			253
+
+#define SADB_X_CALG_NONE          0
+#define SADB_X_CALG_OUI           1
+#define SADB_X_CALG_DEFLATE       2
+#define SADB_X_CALG_LZS           3
+#define SADB_X_CALG_V42BIS        4
+#ifdef KERNEL26_HAS_KAME_DUPLICATES
+#define SADB_X_CALG_LZJH          4
+#endif
+#define SADB_X_CALG_MAX           4
+
+#define SADB_X_TALG_NONE          0
+#define SADB_X_TALG_IPv4_in_IPv4  1
+#define SADB_X_TALG_IPv6_in_IPv4  2
+#define SADB_X_TALG_IPv4_in_IPv6  3
+#define SADB_X_TALG_IPv6_in_IPv6  4
+#define SADB_X_TALG_MAX           4
+
+
+#define SADB_IDENTTYPE_RESERVED   0
+#define SADB_IDENTTYPE_PREFIX     1
+#define SADB_IDENTTYPE_FQDN       2
+#define SADB_IDENTTYPE_USERFQDN   3
+#define SADB_X_IDENTTYPE_CONNECTION 4
+#define SADB_IDENTTYPE_MAX        4
+
+#define SADB_KEY_FLAGS_MAX     0
+#endif /* __PFKEY_V2_H */
diff --git a/linux/include/zlib/zlib.h b/linux/include/zlib/zlib.h
new file mode 100644
index 000000000..744e3822c
--- /dev/null
+++ b/linux/include/zlib/zlib.h
@@ -0,0 +1,893 @@
+/* zlib.h -- interface of the 'zlib' general purpose compression library
+  version 1.1.4, March 11th, 2002
+
+  Copyright (C) 1995-2002 Jean-loup Gailly and Mark Adler
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+
+  Jean-loup Gailly        Mark Adler
+  jloup@gzip.org          madler@alumni.caltech.edu
+
+
+  The data format used by the zlib library is described by RFCs (Request for
+  Comments) 1950 to 1952 in the files ftp://ds.internic.net/rfc/rfc1950.txt
+  (zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip format).
+*/
+
+#ifndef _ZLIB_H
+#define _ZLIB_H
+
+#include "zconf.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define ZLIB_VERSION "1.1.4"
+
+/* 
+     The 'zlib' compression library provides in-memory compression and
+  decompression functions, including integrity checks of the uncompressed
+  data.  This version of the library supports only one compression method
+  (deflation) but other algorithms will be added later and will have the same
+  stream interface.
+
+     Compression can be done in a single step if the buffers are large
+  enough (for example if an input file is mmap'ed), or can be done by
+  repeated calls of the compression function.  In the latter case, the
+  application must provide more input and/or consume the output
+  (providing more output space) before each call.
+
+     The library also supports reading and writing files in gzip (.gz) format
+  with an interface similar to that of stdio.
+
+     The library does not install any signal handler. The decoder checks
+  the consistency of the compressed data, so the library should never
+  crash even in case of corrupted input.
+*/
+
+typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size));
+typedef void   (*free_func)  OF((voidpf opaque, voidpf address));
+
+struct internal_state;
+
+typedef struct z_stream_s {
+    Bytef    *next_in;  /* next input byte */
+    uInt     avail_in;  /* number of bytes available at next_in */
+    uLong    total_in;  /* total nb of input bytes read so far */
+
+    Bytef    *next_out; /* next output byte should be put there */
+    uInt     avail_out; /* remaining free space at next_out */
+    uLong    total_out; /* total nb of bytes output so far */
+
+    const char     *msg;      /* last error message, NULL if no error */
+    struct internal_state FAR *state; /* not visible by applications */
+
+    alloc_func zalloc;  /* used to allocate the internal state */
+    free_func  zfree;   /* used to free the internal state */
+    voidpf     opaque;  /* private data object passed to zalloc and zfree */
+
+    int     data_type;  /* best guess about the data type: ascii or binary */
+    uLong   adler;      /* adler32 value of the uncompressed data */
+    uLong   reserved;   /* reserved for future use */
+} z_stream;
+
+typedef z_stream FAR *z_streamp;
+
+/*
+   The application must update next_in and avail_in when avail_in has
+   dropped to zero. It must update next_out and avail_out when avail_out
+   has dropped to zero. The application must initialize zalloc, zfree and
+   opaque before calling the init function. All other fields are set by the
+   compression library and must not be updated by the application.
+
+   The opaque value provided by the application will be passed as the first
+   parameter for calls of zalloc and zfree. This can be useful for custom
+   memory management. The compression library attaches no meaning to the
+   opaque value.
+
+   zalloc must return Z_NULL if there is not enough memory for the object.
+   If zlib is used in a multi-threaded application, zalloc and zfree must be
+   thread safe.
+
+   On 16-bit systems, the functions zalloc and zfree must be able to allocate
+   exactly 65536 bytes, but will not be required to allocate more than this
+   if the symbol MAXSEG_64K is defined (see zconf.h). WARNING: On MSDOS,
+   pointers returned by zalloc for objects of exactly 65536 bytes *must*
+   have their offset normalized to zero. The default allocation function
+   provided by this library ensures this (see zutil.c). To reduce memory
+   requirements and avoid any allocation of 64K objects, at the expense of
+   compression ratio, compile the library with -DMAX_WBITS=14 (see zconf.h).
+
+   The fields total_in and total_out can be used for statistics or
+   progress reports. After compression, total_in holds the total size of
+   the uncompressed data and may be saved for use in the decompressor
+   (particularly if the decompressor wants to decompress everything in
+   a single step).
+*/
+
+                        /* constants */
+
+#define Z_NO_FLUSH      0
+#define Z_PARTIAL_FLUSH 1 /* will be removed, use Z_SYNC_FLUSH instead */
+#define Z_SYNC_FLUSH    2
+#define Z_FULL_FLUSH    3
+#define Z_FINISH        4
+/* Allowed flush values; see deflate() below for details */
+
+#define Z_OK            0
+#define Z_STREAM_END    1
+#define Z_NEED_DICT     2
+#define Z_ERRNO        (-1)
+#define Z_STREAM_ERROR (-2)
+#define Z_DATA_ERROR   (-3)
+#define Z_MEM_ERROR    (-4)
+#define Z_BUF_ERROR    (-5)
+#define Z_VERSION_ERROR (-6)
+/* Return codes for the compression/decompression functions. Negative
+ * values are errors, positive values are used for special but normal events.
+ */
+
+#define Z_NO_COMPRESSION         0
+#define Z_BEST_SPEED             1
+#define Z_BEST_COMPRESSION       9
+#define Z_DEFAULT_COMPRESSION  (-1)
+/* compression levels */
+
+#define Z_FILTERED            1
+#define Z_HUFFMAN_ONLY        2
+#define Z_DEFAULT_STRATEGY    0
+/* compression strategy; see deflateInit2() below for details */
+
+#define Z_BINARY   0
+#define Z_ASCII    1
+#define Z_UNKNOWN  2
+/* Possible values of the data_type field */
+
+#define Z_DEFLATED   8
+/* The deflate compression method (the only one supported in this version) */
+
+#define Z_NULL  0  /* for initializing zalloc, zfree, opaque */
+
+#define zlib_version zlibVersion()
+/* for compatibility with versions < 1.0.2 */
+
+                        /* basic functions */
+
+ZEXTERN const char * ZEXPORT zlibVersion OF((void));
+/* The application can compare zlibVersion and ZLIB_VERSION for consistency.
+   If the first character differs, the library code actually used is
+   not compatible with the zlib.h header file used by the application.
+   This check is automatically made by deflateInit and inflateInit.
+ */
+
+/* 
+ZEXTERN int ZEXPORT deflateInit OF((z_streamp strm, int level));
+
+     Initializes the internal stream state for compression. The fields
+   zalloc, zfree and opaque must be initialized before by the caller.
+   If zalloc and zfree are set to Z_NULL, deflateInit updates them to
+   use default allocation functions.
+
+     The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9:
+   1 gives best speed, 9 gives best compression, 0 gives no compression at
+   all (the input data is simply copied a block at a time).
+   Z_DEFAULT_COMPRESSION requests a default compromise between speed and
+   compression (currently equivalent to level 6).
+
+     deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not
+   enough memory, Z_STREAM_ERROR if level is not a valid compression level,
+   Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible
+   with the version assumed by the caller (ZLIB_VERSION).
+   msg is set to null if there is no error message.  deflateInit does not
+   perform any compression: this will be done by deflate().
+*/
+
+
+ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));
+/*
+    deflate compresses as much data as possible, and stops when the input
+  buffer becomes empty or the output buffer becomes full. It may introduce some
+  output latency (reading input without producing any output) except when
+  forced to flush.
+
+    The detailed semantics are as follows. deflate performs one or both of the
+  following actions:
+
+  - Compress more input starting at next_in and update next_in and avail_in
+    accordingly. If not all input can be processed (because there is not
+    enough room in the output buffer), next_in and avail_in are updated and
+    processing will resume at this point for the next call of deflate().
+
+  - Provide more output starting at next_out and update next_out and avail_out
+    accordingly. This action is forced if the parameter flush is non zero.
+    Forcing flush frequently degrades the compression ratio, so this parameter
+    should be set only when necessary (in interactive applications).
+    Some output may be provided even if flush is not set.
+
+  Before the call of deflate(), the application should ensure that at least
+  one of the actions is possible, by providing more input and/or consuming
+  more output, and updating avail_in or avail_out accordingly; avail_out
+  should never be zero before the call. The application can consume the
+  compressed output when it wants, for example when the output buffer is full
+  (avail_out == 0), or after each call of deflate(). If deflate returns Z_OK
+  and with zero avail_out, it must be called again after making room in the
+  output buffer because there might be more output pending.
+
+    If the parameter flush is set to Z_SYNC_FLUSH, all pending output is
+  flushed to the output buffer and the output is aligned on a byte boundary, so
+  that the decompressor can get all input data available so far. (In particular
+  avail_in is zero after the call if enough output space has been provided
+  before the call.)  Flushing may degrade compression for some compression
+  algorithms and so it should be used only when necessary.
+
+    If flush is set to Z_FULL_FLUSH, all output is flushed as with
+  Z_SYNC_FLUSH, and the compression state is reset so that decompression can
+  restart from this point if previous compressed data has been damaged or if
+  random access is desired. Using Z_FULL_FLUSH too often can seriously degrade
+  the compression.
+
+    If deflate returns with avail_out == 0, this function must be called again
+  with the same value of the flush parameter and more output space (updated
+  avail_out), until the flush is complete (deflate returns with non-zero
+  avail_out).
+
+    If the parameter flush is set to Z_FINISH, pending input is processed,
+  pending output is flushed and deflate returns with Z_STREAM_END if there
+  was enough output space; if deflate returns with Z_OK, this function must be
+  called again with Z_FINISH and more output space (updated avail_out) but no
+  more input data, until it returns with Z_STREAM_END or an error. After
+  deflate has returned Z_STREAM_END, the only possible operations on the
+  stream are deflateReset or deflateEnd.
+  
+    Z_FINISH can be used immediately after deflateInit if all the compression
+  is to be done in a single step. In this case, avail_out must be at least
+  0.1% larger than avail_in plus 12 bytes.  If deflate does not return
+  Z_STREAM_END, then it must be called again as described above.
+
+    deflate() sets strm->adler to the adler32 checksum of all input read
+  so far (that is, total_in bytes).
+
+    deflate() may update data_type if it can make a good guess about
+  the input data type (Z_ASCII or Z_BINARY). In doubt, the data is considered
+  binary. This field is only for information purposes and does not affect
+  the compression algorithm in any manner.
+
+    deflate() returns Z_OK if some progress has been made (more input
+  processed or more output produced), Z_STREAM_END if all input has been
+  consumed and all output has been produced (only when flush is set to
+  Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example
+  if next_in or next_out was NULL), Z_BUF_ERROR if no progress is possible
+  (for example avail_in or avail_out was zero).
+*/
+
+
+ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm));
+/*
+     All dynamically allocated data structures for this stream are freed.
+   This function discards any unprocessed input and does not flush any
+   pending output.
+
+     deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the
+   stream state was inconsistent, Z_DATA_ERROR if the stream was freed
+   prematurely (some input or output was discarded). In the error case,
+   msg may be set but then points to a static string (which must not be
+   deallocated).
+*/
+
+
+/* 
+ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm));
+
+     Initializes the internal stream state for decompression. The fields
+   next_in, avail_in, zalloc, zfree and opaque must be initialized before by
+   the caller. If next_in is not Z_NULL and avail_in is large enough (the exact
+   value depends on the compression method), inflateInit determines the
+   compression method from the zlib header and allocates all data structures
+   accordingly; otherwise the allocation will be deferred to the first call of
+   inflate.  If zalloc and zfree are set to Z_NULL, inflateInit updates them to
+   use default allocation functions.
+
+     inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_VERSION_ERROR if the zlib library version is incompatible with the
+   version assumed by the caller.  msg is set to null if there is no error
+   message. inflateInit does not perform any decompression apart from reading
+   the zlib header if present: this will be done by inflate().  (So next_in and
+   avail_in may be modified, but next_out and avail_out are unchanged.)
+*/
+
+
+ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush));
+/*
+    inflate decompresses as much data as possible, and stops when the input
+  buffer becomes empty or the output buffer becomes full. It may some
+  introduce some output latency (reading input without producing any output)
+  except when forced to flush.
+
+  The detailed semantics are as follows. inflate performs one or both of the
+  following actions:
+
+  - Decompress more input starting at next_in and update next_in and avail_in
+    accordingly. If not all input can be processed (because there is not
+    enough room in the output buffer), next_in is updated and processing
+    will resume at this point for the next call of inflate().
+
+  - Provide more output starting at next_out and update next_out and avail_out
+    accordingly.  inflate() provides as much output as possible, until there
+    is no more input data or no more space in the output buffer (see below
+    about the flush parameter).
+
+  Before the call of inflate(), the application should ensure that at least
+  one of the actions is possible, by providing more input and/or consuming
+  more output, and updating the next_* and avail_* values accordingly.
+  The application can consume the uncompressed output when it wants, for
+  example when the output buffer is full (avail_out == 0), or after each
+  call of inflate(). If inflate returns Z_OK and with zero avail_out, it
+  must be called again after making room in the output buffer because there
+  might be more output pending.
+
+    If the parameter flush is set to Z_SYNC_FLUSH, inflate flushes as much
+  output as possible to the output buffer. The flushing behavior of inflate is
+  not specified for values of the flush parameter other than Z_SYNC_FLUSH
+  and Z_FINISH, but the current implementation actually flushes as much output
+  as possible anyway.
+
+    inflate() should normally be called until it returns Z_STREAM_END or an
+  error. However if all decompression is to be performed in a single step
+  (a single call of inflate), the parameter flush should be set to
+  Z_FINISH. In this case all pending input is processed and all pending
+  output is flushed; avail_out must be large enough to hold all the
+  uncompressed data. (The size of the uncompressed data may have been saved
+  by the compressor for this purpose.) The next operation on this stream must
+  be inflateEnd to deallocate the decompression state. The use of Z_FINISH
+  is never required, but can be used to inform inflate that a faster routine
+  may be used for the single inflate() call.
+
+     If a preset dictionary is needed at this point (see inflateSetDictionary
+  below), inflate sets strm-adler to the adler32 checksum of the
+  dictionary chosen by the compressor and returns Z_NEED_DICT; otherwise 
+  it sets strm->adler to the adler32 checksum of all output produced
+  so far (that is, total_out bytes) and returns Z_OK, Z_STREAM_END or
+  an error code as described below. At the end of the stream, inflate()
+  checks that its computed adler32 checksum is equal to that saved by the
+  compressor and returns Z_STREAM_END only if the checksum is correct.
+
+    inflate() returns Z_OK if some progress has been made (more input processed
+  or more output produced), Z_STREAM_END if the end of the compressed data has
+  been reached and all uncompressed output has been produced, Z_NEED_DICT if a
+  preset dictionary is needed at this point, Z_DATA_ERROR if the input data was
+  corrupted (input stream not conforming to the zlib format or incorrect
+  adler32 checksum), Z_STREAM_ERROR if the stream structure was inconsistent
+  (for example if next_in or next_out was NULL), Z_MEM_ERROR if there was not
+  enough memory, Z_BUF_ERROR if no progress is possible or if there was not
+  enough room in the output buffer when Z_FINISH is used. In the Z_DATA_ERROR
+  case, the application may then call inflateSync to look for a good
+  compression block.
+*/
+
+
+ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm));
+/*
+     All dynamically allocated data structures for this stream are freed.
+   This function discards any unprocessed input and does not flush any
+   pending output.
+
+     inflateEnd returns Z_OK if success, Z_STREAM_ERROR if the stream state
+   was inconsistent. In the error case, msg may be set but then points to a
+   static string (which must not be deallocated).
+*/
+
+                        /* Advanced functions */
+
+/*
+    The following functions are needed only in some special applications.
+*/
+
+/*   
+ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm,
+                                     int  level,
+                                     int  method,
+                                     int  windowBits,
+                                     int  memLevel,
+                                     int  strategy));
+
+     This is another version of deflateInit with more compression options. The
+   fields next_in, zalloc, zfree and opaque must be initialized before by
+   the caller.
+
+     The method parameter is the compression method. It must be Z_DEFLATED in
+   this version of the library.
+
+     The windowBits parameter is the base two logarithm of the window size
+   (the size of the history buffer).  It should be in the range 8..15 for this
+   version of the library. Larger values of this parameter result in better
+   compression at the expense of memory usage. The default value is 15 if
+   deflateInit is used instead.
+
+     The memLevel parameter specifies how much memory should be allocated
+   for the internal compression state. memLevel=1 uses minimum memory but
+   is slow and reduces compression ratio; memLevel=9 uses maximum memory
+   for optimal speed. The default value is 8. See zconf.h for total memory
+   usage as a function of windowBits and memLevel.
+
+     The strategy parameter is used to tune the compression algorithm. Use the
+   value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a
+   filter (or predictor), or Z_HUFFMAN_ONLY to force Huffman encoding only (no
+   string match).  Filtered data consists mostly of small values with a
+   somewhat random distribution. In this case, the compression algorithm is
+   tuned to compress them better. The effect of Z_FILTERED is to force more
+   Huffman coding and less string matching; it is somewhat intermediate
+   between Z_DEFAULT and Z_HUFFMAN_ONLY. The strategy parameter only affects
+   the compression ratio but not the correctness of the compressed output even
+   if it is not set appropriately.
+
+      deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_STREAM_ERROR if a parameter is invalid (such as an invalid
+   method). msg is set to null if there is no error message.  deflateInit2 does
+   not perform any compression: this will be done by deflate().
+*/
+                            
+ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm,
+                                             const Bytef *dictionary,
+                                             uInt  dictLength));
+/*
+     Initializes the compression dictionary from the given byte sequence
+   without producing any compressed output. This function must be called
+   immediately after deflateInit, deflateInit2 or deflateReset, before any
+   call of deflate. The compressor and decompressor must use exactly the same
+   dictionary (see inflateSetDictionary).
+
+     The dictionary should consist of strings (byte sequences) that are likely
+   to be encountered later in the data to be compressed, with the most commonly
+   used strings preferably put towards the end of the dictionary. Using a
+   dictionary is most useful when the data to be compressed is short and can be
+   predicted with good accuracy; the data can then be compressed better than
+   with the default empty dictionary.
+
+     Depending on the size of the compression data structures selected by
+   deflateInit or deflateInit2, a part of the dictionary may in effect be
+   discarded, for example if the dictionary is larger than the window size in
+   deflate or deflate2. Thus the strings most likely to be useful should be
+   put at the end of the dictionary, not at the front.
+
+     Upon return of this function, strm->adler is set to the Adler32 value
+   of the dictionary; the decompressor may later use this value to determine
+   which dictionary has been used by the compressor. (The Adler32 value
+   applies to the whole dictionary even if only a subset of the dictionary is
+   actually used by the compressor.)
+
+     deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a
+   parameter is invalid (such as NULL dictionary) or the stream state is
+   inconsistent (for example if deflate has already been called for this stream
+   or if the compression method is bsort). deflateSetDictionary does not
+   perform any compression: this will be done by deflate().
+*/
+
+ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest,
+                                    z_streamp source));
+/*
+     Sets the destination stream as a complete copy of the source stream.
+
+     This function can be useful when several compression strategies will be
+   tried, for example when there are several ways of pre-processing the input
+   data with a filter. The streams that will be discarded should then be freed
+   by calling deflateEnd.  Note that deflateCopy duplicates the internal
+   compression state which can be quite large, so this strategy is slow and
+   can consume lots of memory.
+
+     deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not
+   enough memory, Z_STREAM_ERROR if the source stream state was inconsistent
+   (such as zalloc being NULL). msg is left unchanged in both source and
+   destination.
+*/
+
+ZEXTERN int ZEXPORT deflateReset OF((z_streamp strm));
+/*
+     This function is equivalent to deflateEnd followed by deflateInit,
+   but does not free and reallocate all the internal compression state.
+   The stream will keep the same compression level and any other attributes
+   that may have been set by deflateInit2.
+
+      deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
+   stream state was inconsistent (such as zalloc or state being NULL).
+*/
+
+ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,
+				      int level,
+				      int strategy));
+/*
+     Dynamically update the compression level and compression strategy.  The
+   interpretation of level and strategy is as in deflateInit2.  This can be
+   used to switch between compression and straight copy of the input data, or
+   to switch to a different kind of input data requiring a different
+   strategy. If the compression level is changed, the input available so far
+   is compressed with the old level (and may be flushed); the new level will
+   take effect only at the next call of deflate().
+
+     Before the call of deflateParams, the stream state must be set as for
+   a call of deflate(), since the currently available input may have to
+   be compressed and flushed. In particular, strm->avail_out must be non-zero.
+
+     deflateParams returns Z_OK if success, Z_STREAM_ERROR if the source
+   stream state was inconsistent or if a parameter was invalid, Z_BUF_ERROR
+   if strm->avail_out was zero.
+*/
+
+/*   
+ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm,
+                                     int  windowBits));
+
+     This is another version of inflateInit with an extra parameter. The
+   fields next_in, avail_in, zalloc, zfree and opaque must be initialized
+   before by the caller.
+
+     The windowBits parameter is the base two logarithm of the maximum window
+   size (the size of the history buffer).  It should be in the range 8..15 for
+   this version of the library. The default value is 15 if inflateInit is used
+   instead. If a compressed stream with a larger window size is given as
+   input, inflate() will return with the error code Z_DATA_ERROR instead of
+   trying to allocate a larger window.
+
+      inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_STREAM_ERROR if a parameter is invalid (such as a negative
+   memLevel). msg is set to null if there is no error message.  inflateInit2
+   does not perform any decompression apart from reading the zlib header if
+   present: this will be done by inflate(). (So next_in and avail_in may be
+   modified, but next_out and avail_out are unchanged.)
+*/
+
+ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm,
+                                             const Bytef *dictionary,
+                                             uInt  dictLength));
+/*
+     Initializes the decompression dictionary from the given uncompressed byte
+   sequence. This function must be called immediately after a call of inflate
+   if this call returned Z_NEED_DICT. The dictionary chosen by the compressor
+   can be determined from the Adler32 value returned by this call of
+   inflate. The compressor and decompressor must use exactly the same
+   dictionary (see deflateSetDictionary).
+
+     inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a
+   parameter is invalid (such as NULL dictionary) or the stream state is
+   inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the
+   expected one (incorrect Adler32 value). inflateSetDictionary does not
+   perform any decompression: this will be done by subsequent calls of
+   inflate().
+*/
+
+ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm));
+/* 
+    Skips invalid compressed data until a full flush point (see above the
+  description of deflate with Z_FULL_FLUSH) can be found, or until all
+  available input is skipped. No output is provided.
+
+    inflateSync returns Z_OK if a full flush point has been found, Z_BUF_ERROR
+  if no more input was provided, Z_DATA_ERROR if no flush point has been found,
+  or Z_STREAM_ERROR if the stream structure was inconsistent. In the success
+  case, the application may save the current current value of total_in which
+  indicates where valid compressed data was found. In the error case, the
+  application may repeatedly call inflateSync, providing more input each time,
+  until success or end of the input data.
+*/
+
+ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm));
+/*
+     This function is equivalent to inflateEnd followed by inflateInit,
+   but does not free and reallocate all the internal decompression state.
+   The stream will keep attributes that may have been set by inflateInit2.
+
+      inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
+   stream state was inconsistent (such as zalloc or state being NULL).
+*/
+
+
+                        /* utility functions */
+
+/*
+     The following utility functions are implemented on top of the
+   basic stream-oriented functions. To simplify the interface, some
+   default options are assumed (compression level and memory usage,
+   standard memory allocation functions). The source code of these
+   utility functions can easily be modified if you need special options.
+*/
+
+ZEXTERN int ZEXPORT compress OF((Bytef *dest,   uLongf *destLen,
+                                 const Bytef *source, uLong sourceLen));
+/*
+     Compresses the source buffer into the destination buffer.  sourceLen is
+   the byte length of the source buffer. Upon entry, destLen is the total
+   size of the destination buffer, which must be at least 0.1% larger than
+   sourceLen plus 12 bytes. Upon exit, destLen is the actual size of the
+   compressed buffer.
+     This function can be used to compress a whole file at once if the
+   input file is mmap'ed.
+     compress returns Z_OK if success, Z_MEM_ERROR if there was not
+   enough memory, Z_BUF_ERROR if there was not enough room in the output
+   buffer.
+*/
+
+ZEXTERN int ZEXPORT compress2 OF((Bytef *dest,   uLongf *destLen,
+                                  const Bytef *source, uLong sourceLen,
+                                  int level));
+/*
+     Compresses the source buffer into the destination buffer. The level
+   parameter has the same meaning as in deflateInit.  sourceLen is the byte
+   length of the source buffer. Upon entry, destLen is the total size of the
+   destination buffer, which must be at least 0.1% larger than sourceLen plus
+   12 bytes. Upon exit, destLen is the actual size of the compressed buffer.
+
+     compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_BUF_ERROR if there was not enough room in the output buffer,
+   Z_STREAM_ERROR if the level parameter is invalid.
+*/
+
+ZEXTERN int ZEXPORT uncompress OF((Bytef *dest,   uLongf *destLen,
+                                   const Bytef *source, uLong sourceLen));
+/*
+     Decompresses the source buffer into the destination buffer.  sourceLen is
+   the byte length of the source buffer. Upon entry, destLen is the total
+   size of the destination buffer, which must be large enough to hold the
+   entire uncompressed data. (The size of the uncompressed data must have
+   been saved previously by the compressor and transmitted to the decompressor
+   by some mechanism outside the scope of this compression library.)
+   Upon exit, destLen is the actual size of the compressed buffer.
+     This function can be used to decompress a whole file at once if the
+   input file is mmap'ed.
+
+     uncompress returns Z_OK if success, Z_MEM_ERROR if there was not
+   enough memory, Z_BUF_ERROR if there was not enough room in the output
+   buffer, or Z_DATA_ERROR if the input data was corrupted.
+*/
+
+
+typedef voidp gzFile;
+
+ZEXTERN gzFile ZEXPORT gzopen  OF((const char *path, const char *mode));
+/*
+     Opens a gzip (.gz) file for reading or writing. The mode parameter
+   is as in fopen ("rb" or "wb") but can also include a compression level
+   ("wb9") or a strategy: 'f' for filtered data as in "wb6f", 'h' for
+   Huffman only compression as in "wb1h". (See the description
+   of deflateInit2 for more information about the strategy parameter.)
+
+     gzopen can be used to read a file which is not in gzip format; in this
+   case gzread will directly read from the file without decompression.
+
+     gzopen returns NULL if the file could not be opened or if there was
+   insufficient memory to allocate the (de)compression state; errno
+   can be checked to distinguish the two cases (if errno is zero, the
+   zlib error is Z_MEM_ERROR).  */
+
+ZEXTERN gzFile ZEXPORT gzdopen  OF((int fd, const char *mode));
+/*
+     gzdopen() associates a gzFile with the file descriptor fd.  File
+   descriptors are obtained from calls like open, dup, creat, pipe or
+   fileno (in the file has been previously opened with fopen).
+   The mode parameter is as in gzopen.
+     The next call of gzclose on the returned gzFile will also close the
+   file descriptor fd, just like fclose(fdopen(fd), mode) closes the file
+   descriptor fd. If you want to keep fd open, use gzdopen(dup(fd), mode).
+     gzdopen returns NULL if there was insufficient memory to allocate
+   the (de)compression state.
+*/
+
+ZEXTERN int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy));
+/*
+     Dynamically update the compression level or strategy. See the description
+   of deflateInit2 for the meaning of these parameters.
+     gzsetparams returns Z_OK if success, or Z_STREAM_ERROR if the file was not
+   opened for writing.
+*/
+
+ZEXTERN int ZEXPORT    gzread  OF((gzFile file, voidp buf, unsigned len));
+/*
+     Reads the given number of uncompressed bytes from the compressed file.
+   If the input file was not in gzip format, gzread copies the given number
+   of bytes into the buffer.
+     gzread returns the number of uncompressed bytes actually read (0 for
+   end of file, -1 for error). */
+
+ZEXTERN int ZEXPORT    gzwrite OF((gzFile file, 
+				   const voidp buf, unsigned len));
+/*
+     Writes the given number of uncompressed bytes into the compressed file.
+   gzwrite returns the number of uncompressed bytes actually written
+   (0 in case of error).
+*/
+
+ZEXTERN int ZEXPORTVA   gzprintf OF((gzFile file, const char *format, ...));
+/*
+     Converts, formats, and writes the args to the compressed file under
+   control of the format string, as in fprintf. gzprintf returns the number of
+   uncompressed bytes actually written (0 in case of error).
+*/
+
+ZEXTERN int ZEXPORT gzputs OF((gzFile file, const char *s));
+/*
+      Writes the given null-terminated string to the compressed file, excluding
+   the terminating null character.
+      gzputs returns the number of characters written, or -1 in case of error.
+*/
+
+ZEXTERN char * ZEXPORT gzgets OF((gzFile file, char *buf, int len));
+/*
+      Reads bytes from the compressed file until len-1 characters are read, or
+   a newline character is read and transferred to buf, or an end-of-file
+   condition is encountered.  The string is then terminated with a null
+   character.
+      gzgets returns buf, or Z_NULL in case of error.
+*/
+
+ZEXTERN int ZEXPORT    gzputc OF((gzFile file, int c));
+/*
+      Writes c, converted to an unsigned char, into the compressed file.
+   gzputc returns the value that was written, or -1 in case of error.
+*/
+
+ZEXTERN int ZEXPORT    gzgetc OF((gzFile file));
+/*
+      Reads one byte from the compressed file. gzgetc returns this byte
+   or -1 in case of end of file or error.
+*/
+
+ZEXTERN int ZEXPORT    gzflush OF((gzFile file, int flush));
+/*
+     Flushes all pending output into the compressed file. The parameter
+   flush is as in the deflate() function. The return value is the zlib
+   error number (see function gzerror below). gzflush returns Z_OK if
+   the flush parameter is Z_FINISH and all output could be flushed.
+     gzflush should be called only when strictly necessary because it can
+   degrade compression.
+*/
+
+ZEXTERN z_off_t ZEXPORT    gzseek OF((gzFile file,
+				      z_off_t offset, int whence));
+/* 
+      Sets the starting position for the next gzread or gzwrite on the
+   given compressed file. The offset represents a number of bytes in the
+   uncompressed data stream. The whence parameter is defined as in lseek(2);
+   the value SEEK_END is not supported.
+     If the file is opened for reading, this function is emulated but can be
+   extremely slow. If the file is opened for writing, only forward seeks are
+   supported; gzseek then compresses a sequence of zeroes up to the new
+   starting position.
+
+      gzseek returns the resulting offset location as measured in bytes from
+   the beginning of the uncompressed stream, or -1 in case of error, in
+   particular if the file is opened for writing and the new starting position
+   would be before the current position.
+*/
+
+ZEXTERN int ZEXPORT    gzrewind OF((gzFile file));
+/*
+     Rewinds the given file. This function is supported only for reading.
+
+   gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET)
+*/
+
+ZEXTERN z_off_t ZEXPORT    gztell OF((gzFile file));
+/*
+     Returns the starting position for the next gzread or gzwrite on the
+   given compressed file. This position represents a number of bytes in the
+   uncompressed data stream.
+
+   gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR)
+*/
+
+ZEXTERN int ZEXPORT gzeof OF((gzFile file));
+/*
+     Returns 1 when EOF has previously been detected reading the given
+   input stream, otherwise zero.
+*/
+
+ZEXTERN int ZEXPORT    gzclose OF((gzFile file));
+/*
+     Flushes all pending output if necessary, closes the compressed file
+   and deallocates all the (de)compression state. The return value is the zlib
+   error number (see function gzerror below).
+*/
+
+ZEXTERN const char * ZEXPORT gzerror OF((gzFile file, int *errnum));
+/*
+     Returns the error message for the last error which occurred on the
+   given compressed file. errnum is set to zlib error number. If an
+   error occurred in the file system and not in the compression library,
+   errnum is set to Z_ERRNO and the application may consult errno
+   to get the exact error code.
+*/
+
+                        /* checksum functions */
+
+/*
+     These functions are not related to compression but are exported
+   anyway because they might be useful in applications using the
+   compression library.
+*/
+
+ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));
+
+/*
+     Update a running Adler-32 checksum with the bytes buf[0..len-1] and
+   return the updated checksum. If buf is NULL, this function returns
+   the required initial value for the checksum.
+   An Adler-32 checksum is almost as reliable as a CRC32 but can be computed
+   much faster. Usage example:
+
+     uLong adler = adler32(0L, Z_NULL, 0);
+
+     while (read_buffer(buffer, length) != EOF) {
+       adler = adler32(adler, buffer, length);
+     }
+     if (adler != original_adler) error();
+*/
+
+ZEXTERN uLong ZEXPORT crc32   OF((uLong crc, const Bytef *buf, uInt len));
+/*
+     Update a running crc with the bytes buf[0..len-1] and return the updated
+   crc. If buf is NULL, this function returns the required initial value
+   for the crc. Pre- and post-conditioning (one's complement) is performed
+   within this function so it shouldn't be done by the application.
+   Usage example:
+
+     uLong crc = crc32(0L, Z_NULL, 0);
+
+     while (read_buffer(buffer, length) != EOF) {
+       crc = crc32(crc, buffer, length);
+     }
+     if (crc != original_crc) error();
+*/
+
+
+                        /* various hacks, don't look :) */
+
+/* deflateInit and inflateInit are macros to allow checking the zlib version
+ * and the compiler's view of z_stream:
+ */
+ZEXTERN int ZEXPORT deflateInit_ OF((z_streamp strm, int level,
+                                     const char *version, int stream_size));
+ZEXTERN int ZEXPORT inflateInit_ OF((z_streamp strm,
+                                     const char *version, int stream_size));
+ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int  level, int  method,
+                                      int windowBits, int memLevel,
+                                      int strategy, const char *version,
+                                      int stream_size));
+ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int  windowBits,
+                                      const char *version, int stream_size));
+#define deflateInit(strm, level) \
+        deflateInit_((strm), (level),       ZLIB_VERSION, sizeof(z_stream))
+#define inflateInit(strm) \
+        inflateInit_((strm),                ZLIB_VERSION, sizeof(z_stream))
+#define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \
+        deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\
+                      (strategy),           ZLIB_VERSION, sizeof(z_stream))
+#define inflateInit2(strm, windowBits) \
+        inflateInit2_((strm), (windowBits), ZLIB_VERSION, sizeof(z_stream))
+
+
+#if !defined(_Z_UTIL_H) && !defined(NO_DUMMY_DECL)
+    struct internal_state {int dummy;}; /* hack for buggy compilers */
+#endif
+
+ZEXTERN const char   * ZEXPORT zError           OF((int err));
+ZEXTERN int            ZEXPORT inflateSyncPoint OF((z_streamp z));
+ZEXTERN const uLongf * ZEXPORT get_crc_table    OF((void));
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _ZLIB_H */
diff --git a/linux/include/zlib/zutil.h b/linux/include/zlib/zutil.h
new file mode 100644
index 000000000..6214815c6
--- /dev/null
+++ b/linux/include/zlib/zutil.h
@@ -0,0 +1,225 @@
+/* zutil.h -- internal interface and configuration of the compression library
+ * Copyright (C) 1995-2002 Jean-loup Gailly.
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+/* @(#) $Id: zutil.h,v 1.1 2004/03/15 20:35:25 as Exp $ */
+
+#ifndef _Z_UTIL_H
+#define _Z_UTIL_H
+
+#include "zlib.h"
+
+#include <linux/string.h>
+#define HAVE_MEMCPY
+
+#if 0 // #ifdef STDC
+#  include <stddef.h>
+#  include <string.h>
+#  include <stdlib.h>
+#endif
+#ifndef __KERNEL__
+#ifdef NO_ERRNO_H
+    extern int errno;
+#else
+#   include <errno.h>
+#endif
+#endif
+
+#ifndef local
+#  define local static
+#endif
+/* compile with -Dlocal if your debugger can't find static symbols */
+
+typedef unsigned char  uch;
+typedef uch FAR uchf;
+typedef unsigned short ush;
+typedef ush FAR ushf;
+typedef unsigned long  ulg;
+
+extern const char *z_errmsg[10]; /* indexed by 2-zlib_error */
+/* (size given to avoid silly warnings with Visual C++) */
+
+#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
+
+#define ERR_RETURN(strm,err) \
+  return (strm->msg = ERR_MSG(err), (err))
+/* To be used only when the state is known to be valid */
+
+        /* common constants */
+
+#ifndef DEF_WBITS
+#  define DEF_WBITS MAX_WBITS
+#endif
+/* default windowBits for decompression. MAX_WBITS is for compression only */
+
+#if MAX_MEM_LEVEL >= 8
+#  define DEF_MEM_LEVEL 8
+#else
+#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
+#endif
+/* default memLevel */
+
+#define STORED_BLOCK 0
+#define STATIC_TREES 1
+#define DYN_TREES    2
+/* The three kinds of block type */
+
+#define MIN_MATCH  3
+#define MAX_MATCH  258
+/* The minimum and maximum match lengths */
+
+#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
+
+        /* target dependencies */
+
+#ifdef MSDOS
+#  define OS_CODE  0x00
+#  if defined(__TURBOC__) || defined(__BORLANDC__)
+#    if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
+       /* Allow compilation with ANSI keywords only enabled */
+       void _Cdecl farfree( void *block );
+       void *_Cdecl farmalloc( unsigned long nbytes );
+#    else
+#     include <alloc.h>
+#    endif
+#  else /* MSC or DJGPP */
+#    include <malloc.h>
+#  endif
+#endif
+
+#ifdef OS2
+#  define OS_CODE  0x06
+#endif
+
+#ifdef WIN32 /* Window 95 & Windows NT */
+#  define OS_CODE  0x0b
+#endif
+
+#if defined(VAXC) || defined(VMS)
+#  define OS_CODE  0x02
+#  define F_OPEN(name, mode) \
+     fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
+#endif
+
+#ifdef AMIGA
+#  define OS_CODE  0x01
+#endif
+
+#if defined(ATARI) || defined(atarist)
+#  define OS_CODE  0x05
+#endif
+
+#if defined(MACOS) || defined(TARGET_OS_MAC)
+#  define OS_CODE  0x07
+#  if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
+#    include <unix.h> /* for fdopen */
+#  else
+#    ifndef fdopen
+#      define fdopen(fd,mode) NULL /* No fdopen() */
+#    endif
+#  endif
+#endif
+
+#ifdef __50SERIES /* Prime/PRIMOS */
+#  define OS_CODE  0x0F
+#endif
+
+#ifdef TOPS20
+#  define OS_CODE  0x0a
+#endif
+
+#if defined(_BEOS_) || defined(RISCOS)
+#  define fdopen(fd,mode) NULL /* No fdopen() */
+#endif
+
+#if (defined(_MSC_VER) && (_MSC_VER > 600))
+#  define fdopen(fd,type)  _fdopen(fd,type)
+#endif
+
+
+        /* Common defaults */
+
+#ifndef OS_CODE
+#  define OS_CODE  0x03  /* assume Unix */
+#endif
+
+#ifndef F_OPEN
+#  define F_OPEN(name, mode) fopen((name), (mode))
+#endif
+
+         /* functions */
+
+#ifdef HAVE_STRERROR
+   extern char *strerror OF((int));
+#  define zstrerror(errnum) strerror(errnum)
+#else
+#  define zstrerror(errnum) ""
+#endif
+
+#if defined(pyr)
+#  define NO_MEMCPY
+#endif
+#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
+ /* Use our own functions for small and medium model with MSC <= 5.0.
+  * You may have to use the same strategy for Borland C (untested).
+  * The __SC__ check is for Symantec.
+  */
+#  define NO_MEMCPY
+#endif
+#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
+#  define HAVE_MEMCPY
+#endif
+#ifdef HAVE_MEMCPY
+#  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
+#    define zmemcpy _fmemcpy
+#    define zmemcmp _fmemcmp
+#    define zmemzero(dest, len) _fmemset(dest, 0, len)
+#  else
+#    define zmemcpy memcpy
+#    define zmemcmp memcmp
+#    define zmemzero(dest, len) memset(dest, 0, len)
+#  endif
+#else
+   extern void zmemcpy  OF((Bytef* dest, const Bytef* source, uInt len));
+   extern int  zmemcmp  OF((const Bytef* s1, const Bytef* s2, uInt len));
+   extern void zmemzero OF((Bytef* dest, uInt len));
+#endif
+
+/* Diagnostic functions */
+#ifdef DEBUG
+#  include <stdio.h>
+   extern int z_verbose;
+   extern void z_error    OF((char *m));
+#  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
+#  define Trace(x) {if (z_verbose>=0) fprintf x ;}
+#  define Tracev(x) {if (z_verbose>0) fprintf x ;}
+#  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
+#  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
+#  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
+#else
+#  define Assert(cond,msg)
+#  define Trace(x)
+#  define Tracev(x)
+#  define Tracevv(x)
+#  define Tracec(c,x)
+#  define Tracecv(c,x)
+#endif
+
+
+typedef uLong (ZEXPORT *check_func) OF((uLong check, const Bytef *buf,
+				       uInt len));
+voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
+void   zcfree  OF((voidpf opaque, voidpf ptr));
+
+#define ZALLOC(strm, items, size) \
+           (*((strm)->zalloc))((strm)->opaque, (items), (size))
+#define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
+#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
+
+#endif /* _Z_UTIL_H */