1/*	$NetBSD: ipf.h,v 1.14 2008/05/20 07:08:06 darrenr Exp $	*/
2
3/*
4 * Copyright (C) 1993-2001, 2003 by Darren Reed.
5 *
6 * See the IPFILTER.LICENCE file for details on licencing.
7 *
8 * @(#)ipf.h	1.12 6/5/96
9 * Id: ipf.h,v 2.71.2.16 2007/10/26 12:15:14 darrenr Exp
10 */
11
12#ifndef	__IPF_H__
13#define	__IPF_H__
14
15#if defined(__osf__)
16# define radix_mask ipf_radix_mask
17# define radix_node ipf_radix_node
18# define radix_node_head ipf_radix_node_head
19#endif
20
21#include <sys/param.h>
22#include <sys/types.h>
23#include <sys/file.h>
24/*
25 * This is a workaround for <sys/uio.h> troubles on FreeBSD, HPUX, OpenBSD.
26 * Needed here because on some systems <sys/uio.h> gets included by things
27 * like <sys/socket.h>
28 */
29#ifndef _KERNEL
30# define ADD_KERNEL
31# define _KERNEL
32# define KERNEL
33#endif
34#ifdef __OpenBSD__
35struct file;
36#endif
37#include <sys/uio.h>
38#ifdef ADD_KERNEL
39# undef _KERNEL
40# undef KERNEL
41#endif
42#include <sys/time.h>
43#include <sys/socket.h>
44#include <net/if.h>
45#if __FreeBSD_version >= 300000
46# include <net/if_var.h>
47#endif
48#include <netinet/in.h>
49#include <netinet/in_systm.h>
50#include <netinet/ip.h>
51#include <netinet/ip_icmp.h>
52#ifndef	TCP_PAWS_IDLE	/* IRIX */
53# include <netinet/tcp.h>
54#endif
55#include <netinet/udp.h>
56
57#include <arpa/inet.h>
58
59#include <errno.h>
60#include <limits.h>
61#include <netdb.h>
62#include <stdlib.h>
63#include <stddef.h>
64#include <stdio.h>
65#if !defined(__SVR4) && !defined(__svr4__) && defined(sun)
66# include <strings.h>
67#endif
68#include <string.h>
69#include <unistd.h>
70
71#include "netinet/ip_compat.h"
72#include "netinet/ip_fil.h"
73#include "netinet/ip_nat.h"
74#include "netinet/ip_frag.h"
75#include "netinet/ip_state.h"
76#include "netinet/ip_proxy.h"
77#include "netinet/ip_auth.h"
78#include "netinet/ip_lookup.h"
79#include "netinet/ip_pool.h"
80#include "netinet/ip_scan.h"
81#include "netinet/ip_htable.h"
82#include "netinet/ip_sync.h"
83
84#include "opts.h"
85
86#ifndef __STDC__
87# undef		const
88# define	const
89#endif
90
91#ifndef	U_32_T
92# define	U_32_T	1
93# if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__FreeBSD__) || \
94    defined(__sgi)
95typedef	u_int32_t	u_32_t;
96# else
97#  if defined(__alpha__) || defined(__alpha) || defined(_LP64)
98typedef unsigned int	u_32_t;
99#  else
100#   if SOLARIS2 >= 6
101typedef uint32_t	u_32_t;
102#   else
103typedef unsigned int	u_32_t;
104#   endif
105#  endif
106# endif /* __NetBSD__ || __OpenBSD__ || __FreeBSD__ || __sgi */
107#endif /* U_32_T */
108
109#ifndef	MAXHOSTNAMELEN
110# define	MAXHOSTNAMELEN	256
111#endif
112
113#define	MAX_ICMPCODE	16
114#define	MAX_ICMPTYPE	19
115
116
117struct	ipopt_names	{
118	int	on_value;
119	int	on_bit;
120	int	on_siz;
121	char	*on_name;
122};
123
124
125typedef struct  alist_s {
126	struct	alist_s	*al_next;
127	int		al_not;
128	i6addr_t	al_i6addr;
129	i6addr_t	al_i6mask;
130} alist_t;
131
132#define	al_addr	al_i6addr.in4_addr
133#define	al_mask	al_i6mask.in4_addr
134#define	al_1	al_addr
135#define	al_2	al_mask
136
137
138typedef	struct	{
139	u_short	fb_c;
140	u_char	fb_t;
141	u_char	fb_f;
142	u_32_t	fb_k;
143} fakebpf_t;
144
145
146#if defined(__NetBSD__) || defined(__OpenBSD__) || \
147        (_BSDI_VERSION >= 199701) || (__FreeBSD_version >= 300000) || \
148	SOLARIS || defined(__sgi) || defined(__osf__) || defined(linux)
149# include <stdarg.h>
150typedef	int	(* ioctlfunc_t)(int, ioctlcmd_t, ...);
151#else
152typedef	int	(* ioctlfunc_t)(dev_t, ioctlcmd_t, void *);
153#endif
154typedef	void	(* addfunc_t)(int, ioctlfunc_t, void *);
155typedef	int	(* copyfunc_t)(void *, void *, size_t);
156
157
158/*
159 * SunOS4
160 */
161#if defined(sun) && !defined(__SVR4) && !defined(__svr4__)
162extern	int	ioctl(int, int, void *);
163#endif
164
165extern	char	thishost[];
166extern	char	flagset[];
167extern	u_char	flags[];
168extern	struct ipopt_names ionames[];
169extern	struct ipopt_names secclass[];
170extern	char	*icmpcodes[MAX_ICMPCODE + 1];
171extern	char	*icmptypes[MAX_ICMPTYPE + 1];
172extern	int	use_inet6;
173extern	int	lineNum;
174extern	struct ipopt_names v6ionames[];
175
176
177extern int addicmp(char ***, struct frentry *, int);
178extern int addipopt(char *, struct ipopt_names *, int, char *);
179extern void alist_free(alist_t *);
180extern alist_t *alist_new(int, char *);
181extern void binprint(void *, size_t);
182extern void initparse(void);
183extern u_32_t buildopts(char *, char *, int);
184extern int checkrev(char *);
185extern int count6bits(u_32_t *);
186extern int count4bits(u_32_t);
187extern char *fac_toname(int);
188extern int fac_findname(char *);
189extern void fill6bits(int, u_int *);
190extern int gethost(char *, u_32_t *);
191extern int getport(struct frentry *, char *, u_short *);
192extern int getportproto(char *, int);
193extern int getproto(char *);
194extern char *getnattype(struct nat *, int);
195extern char *getsumd(u_32_t);
196extern u_32_t getoptbyname(char *);
197extern u_32_t getoptbyvalue(int);
198extern u_32_t getv6optbyname(char *);
199extern u_32_t getv6optbyvalue(int);
200extern void initparse(void);
201extern void ipf_dotuning(int, char *, ioctlfunc_t);
202extern void ipf_addrule(int, ioctlfunc_t, void *);
203extern int ipf_parsefile(int, addfunc_t, ioctlfunc_t *, char *);
204extern int ipf_parsesome(int, addfunc_t, ioctlfunc_t *, FILE *);
205extern int ipmon_parsefile(char *);
206extern int ipmon_parsesome(FILE *);
207extern void ipnat_addrule(int, ioctlfunc_t, void *);
208extern int ipnat_parsefile(int, addfunc_t, ioctlfunc_t, char *);
209extern int ipnat_parsesome(int, addfunc_t, ioctlfunc_t, FILE *);
210extern int ippool_parsefile(int, char *, ioctlfunc_t);
211extern int ippool_parsesome(int, FILE *, ioctlfunc_t);
212extern int kmemcpywrap(void *, void *, size_t);
213extern char *kvatoname(ipfunc_t, ioctlfunc_t);
214extern alist_t *load_file(char *);
215extern int load_hash(struct iphtable_s *, struct iphtent_s *,
216			  ioctlfunc_t);
217extern int load_hashnode(int, char *, struct iphtent_s *, ioctlfunc_t);
218extern alist_t *load_http(char *);
219extern int load_pool(struct ip_pool_s *list, ioctlfunc_t);
220extern int load_poolnode(int, char *, ip_pool_node_t *, ioctlfunc_t);
221extern alist_t *load_url(char *);
222extern alist_t *make_range(int, struct in_addr, struct in_addr);
223extern ipfunc_t nametokva(char *, ioctlfunc_t);
224extern void nat_setgroupmap(struct ipnat *);
225extern int ntomask(int, int, u_32_t *);
226extern u_32_t optname(char ***, u_short *, int);
227extern struct frentry *parse(char *, int);
228extern char *portname(int, int);
229extern int pri_findname(char *);
230extern char *pri_toname(int);
231extern void print_toif(char *, struct frdest *);
232extern void printaps(ap_session_t *, int);
233extern void printbuf(char *, int, int);
234extern void printfr(struct frentry *, ioctlfunc_t);
235extern void printtunable(ipftune_t *);
236extern struct iphtable_s *printhash(struct iphtable_s *, copyfunc_t,
237					 char *, int);
238extern struct iphtable_s *printhash_live(iphtable_t *, int, char *, int);
239extern void printhashdata(iphtable_t *, int);
240extern struct iphtent_s *printhashnode(struct iphtable_s *,
241					    struct iphtent_s *,
242					    copyfunc_t, int);
243extern void printhostmask(int, u_32_t *, u_32_t *);
244extern void printip(u_32_t *);
245extern void printlog(struct frentry *);
246extern void printlookup(i6addr_t *addr, i6addr_t *mask);
247extern void printmask(u_32_t *);
248extern void printpacket(struct ip *);
249extern void printpacket6(struct ip *);
250extern struct ip_pool_s *printpool(struct ip_pool_s *, copyfunc_t,
251					char *, int);
252extern struct ip_pool_s *printpool_live(struct ip_pool_s *, int,
253					     char *, int);
254extern void printpooldata(ip_pool_t *, int);
255extern struct ip_pool_node *printpoolnode(struct ip_pool_node *, int);
256extern void printproto(struct protoent *, int, struct ipnat *);
257extern void printportcmp(int, struct frpcmp *);
258extern void optprint(u_short *, u_long, u_long);
259#ifdef	USE_INET6
260extern void optprintv6(u_short *, u_long, u_long);
261#endif
262extern int remove_hash(struct iphtable_s *, ioctlfunc_t);
263extern int remove_hashnode(int, char *, struct iphtent_s *, ioctlfunc_t);
264extern int remove_pool(ip_pool_t *, ioctlfunc_t);
265extern int remove_poolnode(int, char *, ip_pool_node_t *, ioctlfunc_t);
266extern u_char tcp_flags(char *, u_char *, int);
267extern u_char tcpflags(char *);
268extern void printc(struct frentry *);
269extern void printC(int);
270extern void emit(int, int, void *, struct frentry *);
271extern u_char secbit(int);
272extern u_char seclevel(char *);
273extern void printfraginfo(char *, struct ipfr *);
274extern void printifname(char *, char *, void *);
275extern char *hostname(int, void *);
276extern struct ipstate *printstate(struct ipstate *, int, u_long);
277extern void printsbuf(char *);
278extern void printnat(struct ipnat *, int);
279extern void printactivenat(struct nat *, int, int, u_long);
280extern void printhostmap(struct hostmap *, u_int);
281extern void printtqtable(ipftq_t *);
282
283extern void set_variable(char *, char *);
284extern char *get_variable(char *, char **, int);
285extern void resetlexer(void);
286
287#if SOLARIS
288extern int gethostname(char *, int );
289extern void sync(void);
290#endif
291
292#endif /* __IPF_H__ */
293