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-rw-r--r--src/libfreeswan/pfkey.h498
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diff --git a/src/libfreeswan/pfkey.h b/src/libfreeswan/pfkey.h
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+++ b/src/libfreeswan/pfkey.h
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+/*
+ * 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 __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);
+
+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.
+ *
+ */
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