1/*	$FreeBSD$	*/
2
3/*
4 * Copyright (C) 2012 by Darren Reed.
5 *
6 * See the IPFILTER.LICENCE file for details on licencing.
7 *
8 * @(#)ipf.h	1.12 6/5/96
9 * $Id$
10 */
11
12#ifndef	__IPF_H__
13#define	__IPF_H__
14
15
16#include <sys/param.h>
17#include <sys/types.h>
18#include <sys/file.h>
19/*
20 * This is a workaround for <sys/uio.h> troubles on FreeBSD, HPUX, OpenBSD.
21 * Needed here because on some systems <sys/uio.h> gets included by things
22 * like <sys/socket.h>
23 */
24#ifndef _KERNEL
25# define ADD_KERNEL
26# define _KERNEL
27# define KERNEL
28#endif
29#include <sys/uio.h>
30#ifdef ADD_KERNEL
31# undef _KERNEL
32# undef KERNEL
33#endif
34#include <sys/time.h>
35#include <sys/socket.h>
36#include <net/if.h>
37
38#include <netinet/in.h>
39#include <netinet/in_systm.h>
40#include <netinet/ip.h>
41#include <netinet/ip_icmp.h>
42# include <netinet/tcp.h>
43#include <netinet/udp.h>
44
45#include <arpa/inet.h>
46
47#include <errno.h>
48#include <limits.h>
49#include <netdb.h>
50#include <stdlib.h>
51#include <stddef.h>
52#include <stdio.h>
53#if !defined(__SVR4) && !defined(__svr4__) && defined(sun)
54# include <strings.h>
55#endif
56#include <string.h>
57#include <unistd.h>
58
59#include "netinet/ip_compat.h"
60#include "netinet/ip_fil.h"
61#include "netinet/ip_nat.h"
62#include "netinet/ip_frag.h"
63#include "netinet/ip_state.h"
64#include "netinet/ip_proxy.h"
65#include "netinet/ip_auth.h"
66#include "netinet/ip_lookup.h"
67#include "netinet/ip_pool.h"
68#include "netinet/ip_scan.h"
69#include "netinet/ip_htable.h"
70#include "netinet/ip_sync.h"
71#include "netinet/ip_dstlist.h"
72
73#include "opts.h"
74
75#ifndef __P
76# ifdef __STDC__
77#  define	__P(x)	x
78# else
79#  define	__P(x)	()
80# endif
81#endif
82#ifndef __STDC__
83# undef		const
84# define	const
85#endif
86
87#ifndef	U_32_T
88# define	U_32_T	1
89# if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__FreeBSD__) || \
90    defined(__sgi)
91typedef	u_int32_t	u_32_t;
92# else
93#  if defined(__alpha__) || defined(__alpha) || defined(_LP64)
94typedef unsigned int	u_32_t;
95#  else
96#   if SOLARIS2 >= 6
97typedef uint32_t	u_32_t;
98#   else
99typedef unsigned int	u_32_t;
100#   endif
101#  endif
102# endif /* __NetBSD__ || __OpenBSD__ || __FreeBSD__ || __sgi */
103#endif /* U_32_T */
104
105#ifndef	MAXHOSTNAMELEN
106# define	MAXHOSTNAMELEN	256
107#endif
108
109#define	MAX_ICMPCODE	16
110#define	MAX_ICMPTYPE	19
111
112#define	PRINTF	(void)printf
113#define	FPRINTF	(void)fprintf
114
115
116struct	ipopt_names	{
117	int	on_value;
118	int	on_bit;
119	int	on_siz;
120	char	*on_name;
121};
122
123
124typedef struct  alist_s {
125	struct	alist_s	*al_next;
126	int		al_not;
127	int		al_family;
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  plist_s {
139	struct	plist_s	*pl_next;
140	int		pl_compare;
141	u_short		pl_port1;
142	u_short		pl_port2;
143} plist_t;
144
145
146typedef	struct	{
147	u_short	fb_c;
148	u_char	fb_t;
149	u_char	fb_f;
150	u_32_t	fb_k;
151} fakebpf_t;
152
153
154typedef struct  {
155	char	*it_name;
156	int	it_v4;
157	int	it_v6;
158} icmptype_t;
159
160
161typedef	struct	wordtab {
162	char	*w_word;
163	int	w_value;
164} wordtab_t;
165
166
167typedef	struct	namelist {
168	struct namelist	*na_next;
169	char		*na_name;
170	int		na_value;
171} namelist_t;
172
173
174typedef	struct	proxyrule {
175	struct	proxyrule	*pr_next;
176	char			*pr_proxy;
177	char			*pr_conf;
178	namelist_t		*pr_names;
179	int			pr_proto;
180} proxyrule_t;
181
182
183#if defined(__NetBSD__) || defined(__FreeBSD_version) || \
184	SOLARIS
185# include <stdarg.h>
186typedef	int	(* ioctlfunc_t) __P((int, ioctlcmd_t, ...));
187#else
188typedef	int	(* ioctlfunc_t) __P((dev_t, ioctlcmd_t, void *));
189#endif
190typedef	int	(* addfunc_t) __P((int, ioctlfunc_t, void *));
191typedef	int	(* copyfunc_t) __P((void *, void *, size_t));
192
193
194extern	char	thishost[MAXHOSTNAMELEN];
195extern	char	flagset[];
196extern	u_char	flags[];
197extern	struct ipopt_names ionames[];
198extern	struct ipopt_names secclass[];
199extern	char	*icmpcodes[MAX_ICMPCODE + 1];
200extern	char	*icmptypes[MAX_ICMPTYPE + 1];
201extern	int	use_inet6;
202extern	int	lineNum;
203extern	int	debuglevel;
204extern	struct ipopt_names v6ionames[];
205extern	icmptype_t icmptypelist[];
206extern	wordtab_t statefields[];
207extern	wordtab_t natfields[];
208extern	wordtab_t poolfields[];
209
210
211extern int addicmp __P((char ***, struct frentry *, int));
212extern int addipopt __P((char *, struct ipopt_names *, int, char *));
213extern int addkeep __P((char ***, struct frentry *, int));
214extern alist_t *alist_new __P((int, char *));
215extern void alist_free __P((alist_t *));
216extern void assigndefined __P((char *));
217extern void binprint __P((void *, size_t));
218extern u_32_t buildopts __P((char *, char *, int));
219extern int checkrev __P((char *));
220extern int connecttcp __P((char *, int));
221extern int count6bits __P((u_32_t *));
222extern int count4bits __P((u_32_t));
223extern char *fac_toname __P((int));
224extern int fac_findname __P((char *));
225extern const char *familyname __P((const int));
226extern void fill6bits __P((int, u_int *));
227extern wordtab_t *findword __P((wordtab_t *, char *));
228extern int ftov __P((int));
229extern char *ipf_geterror __P((int, ioctlfunc_t *));
230extern int genmask __P((int, char *, i6addr_t *));
231extern int gethost __P((int, char *, i6addr_t *));
232extern int geticmptype __P((int, char *));
233extern int getport __P((struct frentry *, char *, u_short *, char *));
234extern int getportproto __P((char *, int));
235extern int getproto __P((char *));
236extern char *getnattype __P((struct nat *));
237extern char *getsumd __P((u_32_t));
238extern u_32_t getoptbyname __P((char *));
239extern u_32_t getoptbyvalue __P((int));
240extern u_32_t getv6optbyname __P((char *));
241extern u_32_t getv6optbyvalue __P((int));
242extern char *icmptypename __P((int, int));
243extern void initparse __P((void));
244extern void ipf_dotuning __P((int, char *, ioctlfunc_t));
245extern int ipf_addrule __P((int, ioctlfunc_t, void *));
246extern void ipf_mutex_clean __P((void));
247extern int ipf_parsefile __P((int, addfunc_t, ioctlfunc_t *, char *));
248extern int ipf_parsesome __P((int, addfunc_t, ioctlfunc_t *, FILE *));
249extern void ipf_perror __P((int, char *));
250extern int ipf_perror_fd __P(( int, ioctlfunc_t, char *));
251extern void ipf_rwlock_clean __P((void));
252extern char *ipf_strerror __P((int));
253extern void ipferror __P((int, char *));
254extern int ipmon_parsefile __P((char *));
255extern int ipmon_parsesome __P((FILE *));
256extern int ipnat_addrule __P((int, ioctlfunc_t, void *));
257extern int ipnat_parsefile __P((int, addfunc_t, ioctlfunc_t, char *));
258extern int ipnat_parsesome __P((int, addfunc_t, ioctlfunc_t, FILE *));
259extern int ippool_parsefile __P((int, char *, ioctlfunc_t));
260extern int ippool_parsesome __P((int, FILE *, ioctlfunc_t));
261extern int kmemcpywrap __P((void *, void *, size_t));
262extern char *kvatoname __P((ipfunc_t, ioctlfunc_t));
263extern int load_dstlist __P((struct ippool_dst *, ioctlfunc_t,
264			     ipf_dstnode_t *));
265extern int load_dstlistnode __P((int, char *, struct ipf_dstnode *,
266				 ioctlfunc_t));
267extern alist_t *load_file __P((char *));
268extern int load_hash __P((struct iphtable_s *, struct iphtent_s *,
269			  ioctlfunc_t));
270extern int load_hashnode __P((int, char *, struct iphtent_s *, int,
271			      ioctlfunc_t));
272extern alist_t *load_http __P((char *));
273extern int load_pool __P((struct ip_pool_s *list, ioctlfunc_t));
274extern int load_poolnode __P((int, char *, ip_pool_node_t *, int, ioctlfunc_t));
275extern alist_t *load_url __P((char *));
276extern alist_t *make_range __P((int, struct in_addr, struct in_addr));
277extern void mb_hexdump __P((mb_t *, FILE *));
278extern ipfunc_t nametokva __P((char *, ioctlfunc_t));
279extern void nat_setgroupmap __P((struct ipnat *));
280extern int ntomask __P((int, int, u_32_t *));
281extern u_32_t optname __P((char ***, u_short *, int));
282extern wordtab_t *parsefields __P((wordtab_t *, char *));
283extern int *parseipfexpr __P((char *, char **));
284extern int parsewhoisline __P((char *, addrfamily_t *, addrfamily_t *));
285extern void pool_close __P((void));
286extern int pool_fd __P((void));
287extern int pool_ioctl __P((ioctlfunc_t, ioctlcmd_t, void *));
288extern int pool_open __P((void));
289extern char *portname __P((int, int));
290extern int pri_findname __P((char *));
291extern char *pri_toname __P((int));
292extern void print_toif __P((int, char *, char *, struct frdest *));
293extern void printaps __P((ap_session_t *, int, int));
294extern void printaddr __P((int, int, char *, int, u_32_t *, u_32_t *));
295extern void printbuf __P((char *, int, int));
296extern void printfieldhdr __P((wordtab_t *, wordtab_t *));
297extern void printfr __P((struct frentry *, ioctlfunc_t));
298extern struct iphtable_s *printhash __P((struct iphtable_s *, copyfunc_t,
299					 char *, int, wordtab_t *));
300extern struct iphtable_s *printhash_live __P((iphtable_t *, int, char *,
301					      int, wordtab_t *));
302extern ippool_dst_t *printdstl_live __P((ippool_dst_t *, int, char *,
303					 int, wordtab_t *));
304extern void printhashdata __P((iphtable_t *, int));
305extern struct iphtent_s *printhashnode __P((struct iphtable_s *,
306					    struct iphtent_s *,
307					    copyfunc_t, int, wordtab_t *));
308extern void printhost __P((int, u_32_t *));
309extern void printhostmask __P((int, u_32_t *, u_32_t *));
310extern void printip __P((int, u_32_t *));
311extern void printlog __P((struct frentry *));
312extern void printlookup __P((char *, i6addr_t *addr, i6addr_t *mask));
313extern void printmask __P((int, u_32_t *));
314extern void printnataddr __P((int, char *, nat_addr_t *, int));
315extern void printnatfield __P((nat_t *, int));
316extern void printnatside __P((char *, nat_stat_side_t *));
317extern void printpacket __P((int, mb_t *));
318extern void printpacket6 __P((int, mb_t *));
319extern struct ippool_dst *printdstlist __P((struct ippool_dst *, copyfunc_t,
320					    char *, int, ipf_dstnode_t *,
321					    wordtab_t *));
322extern void printdstlistdata __P((ippool_dst_t *, int));
323extern ipf_dstnode_t *printdstlistnode __P((ipf_dstnode_t *, copyfunc_t,
324					    int, wordtab_t *));
325extern void printdstlistpolicy __P((ippool_policy_t));
326extern struct ip_pool_s *printpool __P((struct ip_pool_s *, copyfunc_t,
327					char *, int, wordtab_t *));
328extern struct ip_pool_s *printpool_live __P((struct ip_pool_s *, int,
329					     char *, int, wordtab_t *));
330extern void printpooldata __P((ip_pool_t *, int));
331extern void printpoolfield __P((void *, int, int));
332extern struct ip_pool_node *printpoolnode __P((struct ip_pool_node *,
333					       int, wordtab_t *));
334extern void printproto __P((struct protoent *, int, struct ipnat *));
335extern void printportcmp __P((int, struct frpcmp *));
336extern void printstatefield __P((ipstate_t *, int));
337extern void printtqtable __P((ipftq_t *));
338extern void printtunable __P((ipftune_t *));
339extern void printunit __P((int));
340extern void optprint __P((u_short *, u_long, u_long));
341#ifdef	USE_INET6
342extern void optprintv6 __P((u_short *, u_long, u_long));
343#endif
344extern int remove_hash __P((struct iphtable_s *, ioctlfunc_t));
345extern int remove_hashnode __P((int, char *, struct iphtent_s *, ioctlfunc_t));
346extern int remove_pool __P((ip_pool_t *, ioctlfunc_t));
347extern int remove_poolnode __P((int, char *, ip_pool_node_t *, ioctlfunc_t));
348extern u_char tcpflags __P((char *));
349extern void printc __P((struct frentry *));
350extern void printC __P((int));
351extern void emit __P((int, int, void *, struct frentry *));
352extern u_char secbit __P((int));
353extern u_char seclevel __P((char *));
354extern void printfraginfo __P((char *, struct ipfr *));
355extern void printifname __P((char *, char *, void *));
356extern char *hostname __P((int, void *));
357extern struct ipstate *printstate __P((struct ipstate *, int, u_long));
358extern void printsbuf __P((char *));
359extern void printnat __P((struct ipnat *, int));
360extern void printactiveaddress __P((int, char *, i6addr_t *, char *));
361extern void printactivenat __P((struct nat *, int, u_long));
362extern void printhostmap __P((struct hostmap *, u_int));
363extern void printtcpflags __P((u_32_t, u_32_t));
364extern void printipfexpr __P((int *));
365extern void printstatefield __P((ipstate_t *, int));
366extern void printstatefieldhdr __P((int));
367extern int sendtrap_v1_0 __P((int, char *, char *, int, time_t));
368extern int sendtrap_v2_0 __P((int, char *, char *, int));
369extern int vtof __P((int));
370
371extern void set_variable __P((char *, char *));
372extern char *get_variable __P((char *, char **, int));
373extern void resetlexer __P((void));
374
375extern void debug __P((int, char *, ...));
376extern void verbose __P((int, char *, ...));
377extern void ipfkdebug __P((char *, ...));
378extern void ipfkverbose __P((char *, ...));
379
380#if SOLARIS
381extern int gethostname __P((char *, int ));
382extern void sync __P((void));
383#endif
384
385#endif /* __IPF_H__ */
386