/* identity representation, as in IKE ID Payloads (RFC 2407 DOI 4.6.2.1) * Copyright (C) 1999-2001  D. Hugh Redelmeier * * 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: id.h,v 1.23 2005/02/14 05:56:02 ken Exp $ */struct id {    int kind;		/* ID_* value */    ip_address ip_addr;	/* ID_IPV4_ADDR, ID_IPV6_ADDR */    chunk_t name;	/* ID_FQDN, ID_USER_FQDN (with @) */			/* ID_KEY_ID, ID_DER_ASN_DN       */};extern void init_id(void);extern const struct id empty_id;	/* ID_NONE */enum myid_state {    MYID_UNKNOWN,	/* not yet figured out */    MYID_HOSTNAME,	/* our current hostname */    MYID_IP,	/* our default IP address */    MYID_SPECIFIED	/* as specified by ipsec.conf */};extern enum myid_state myid_state;extern struct id myids[MYID_SPECIFIED+1];	/* %myid */extern char *myid_str[MYID_SPECIFIED+1];      /* strings */extern void set_myid(enum myid_state s, char *);extern void show_myid_status(void);#define resolve_myid(id) ((id)->kind == ID_MYID? &myids[myid_state] : (id))extern void set_myFQDN(void);extern err_t atoid(char *src, struct id *id, bool myid_ok);extern void iptoid(const ip_address *ip, struct id *id);extern char* temporary_cyclic_buffer(void);extern int idtoa(const struct id *id, char *dst, size_t dstlen);#define IDTOA_BUF	512extern void escape_metachar(const char *src, char *dst, size_t dstlen);extern void remove_metachar(const char *src, char *dst, size_t dstlen);struct end;	/* forward declaration of tag (defined in connections.h) */extern void unshare_id_content(struct id *id);extern void free_id_content(struct id *id);extern bool same_id(const struct id *a, const struct id *b);#define MAX_WILDCARDS	15extern bool match_id(const struct id *a, const struct id *b, int *wildcards);extern int id_count_wildcards(const struct id *id);#define id_is_ipaddr(id) ((id)->kind == ID_IPV4_ADDR || (id)->kind == ID_IPV6_ADDR)struct isakmp_ipsec_id;	/* forward declaration of tag (defined in packet.h) */extern void    build_id_payload(struct isakmp_ipsec_id *hd, chunk_t *tl, struct end *end);