1/* $NetBSD: ipf.h,v 1.3 2012/10/21 22:57:48 christos Exp $ */
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: ipf.h,v 1.1.1.2 2012/07/22 13:44:25 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#include "netinet/ip_dstlist.h"
84
85#include "opts.h"
86
87#ifndef __P
88# ifdef __STDC__
89# define __P(x) x
90# else
91# define __P(x) ()
92# endif
93#endif
94#ifndef __STDC__
95# undef const
96# define const
97#endif
98
99#ifndef U_32_T
100# define U_32_T 1
101# if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__FreeBSD__) || \
102 defined(__sgi)
103typedef u_int32_t u_32_t;
104# else
105# if defined(__alpha__) || defined(__alpha) || defined(_LP64)
106typedef unsigned int u_32_t;
107# else
108# if SOLARIS2 >= 6
109typedef uint32_t u_32_t;
110# else
111typedef unsigned int u_32_t;
112# endif
113# endif
114# endif /* __NetBSD__ || __OpenBSD__ || __FreeBSD__ || __sgi */
115#endif /* U_32_T */
116
117#ifndef MAXHOSTNAMELEN
118# define MAXHOSTNAMELEN 256
119#endif
120
121#define MAX_ICMPCODE 16
122#define MAX_ICMPTYPE 19
123
124#define PRINTF (void)printf
125#define FPRINTF (void)fprintf
126
127
128struct ipopt_names {
129 int on_value;
130 int on_bit;
131 int on_siz;
132 char *on_name;
133};
134
135
136typedef struct alist_s {
137 struct alist_s *al_next;
138 int al_not;
139 int al_family;
140 i6addr_t al_i6addr;
141 i6addr_t al_i6mask;
142} alist_t;
143
144#define al_addr al_i6addr.in4_addr
145#define al_mask al_i6mask.in4_addr
146#define al_1 al_addr
147#define al_2 al_mask
148
149
150typedef struct plist_s {
151 struct plist_s *pl_next;
152 int pl_compare;
153 u_short pl_port1;
154 u_short pl_port2;
155} plist_t;
156
157
158typedef struct {
159 u_short fb_c;
160 u_char fb_t;
161 u_char fb_f;
162 u_32_t fb_k;
163} fakebpf_t;
164
165
166typedef struct {
167 char *it_name;
168 int it_v4;
169 int it_v6;
170} icmptype_t;
171
172
173typedef struct wordtab {
174 char *w_word;
175 int w_value;
176} wordtab_t;
177
178
179typedef struct namelist {
180 struct namelist *na_next;
181 char *na_name;
182 int na_value;
183} namelist_t;
184
185
186typedef struct proxyrule {
187 struct proxyrule *pr_next;
188 char *pr_proxy;
189 char *pr_conf;
190 namelist_t *pr_names;
191 int pr_proto;
192} proxyrule_t;
193
194
195#if defined(__NetBSD__) || defined(__OpenBSD__) || \
196 (_BSDI_VERSION >= 199701) || (__FreeBSD_version >= 300000) || \
197 SOLARIS || defined(__sgi) || defined(__osf__) || defined(linux)
198# include <stdarg.h>
199typedef int (* ioctlfunc_t) __P((int, ioctlcmd_t, ...));
200#else
201typedef int (* ioctlfunc_t) __P((dev_t, ioctlcmd_t, void *));
202#endif
203typedef int (* addfunc_t) __P((int, ioctlfunc_t, void *));
204typedef int (* copyfunc_t) __P((void *, void *, size_t));
205
206
207/*
208 * SunOS4
209 */
210#if defined(sun) && !defined(__SVR4) && !defined(__svr4__)
211extern int ioctl __P((int, int, void *));
212#endif
213
214extern char thishost[];
215extern char flagset[];
216extern u_char flags[];
217extern struct ipopt_names ionames[];
218extern struct ipopt_names secclass[];
219extern char *icmpcodes[MAX_ICMPCODE + 1];
220extern char *icmptypes[MAX_ICMPTYPE + 1];
221extern int use_inet6;
222extern int lineNum;
223extern int debuglevel;
224extern struct ipopt_names v6ionames[];
225extern icmptype_t icmptypelist[];
226extern wordtab_t statefields[];
227extern wordtab_t natfields[];
228extern wordtab_t poolfields[];
229
230
231extern int addicmp __P((char ***, struct frentry *, int));
232extern int addipopt __P((char *, struct ipopt_names *, int, char *));
233extern int addkeep __P((char ***, struct frentry *, int));
234extern alist_t *alist_new __P((int, char *));
235extern void alist_free __P((alist_t *));
236extern void assigndefined __P((char *));
237extern void binprint __P((void *, size_t));
238extern u_32_t buildopts __P((char *, char *, int));
239extern int checkrev __P((char *));
240extern int connecttcp __P((char *, int));
241extern int count6bits __P((u_32_t *));
242extern int count4bits __P((u_32_t));
243extern char *fac_toname __P((int));
244extern int fac_findname __P((char *));
245extern const char *familyname __P((const int));
246extern void fill6bits __P((int, u_int *));
247extern wordtab_t *findword __P((wordtab_t *, char *));
248extern int ftov __P((int));
249extern char *ipf_geterror __P((int, ioctlfunc_t *));
250extern int genmask __P((int, char *, i6addr_t *));
251extern int gethost __P((int, char *, i6addr_t *));
252extern int geticmptype __P((int, char *));
253extern int getport __P((struct frentry *, char *, u_short *, char *));
254extern int getportproto __P((char *, int));
255extern int getproto __P((char *));
256extern char *getnattype __P((struct nat *));
257extern char *getsumd __P((u_32_t));
258extern u_32_t getoptbyname __P((char *));
259extern u_32_t getoptbyvalue __P((int));
260extern u_32_t getv6optbyname __P((char *));
261extern u_32_t getv6optbyvalue __P((int));
262extern char *icmptypename __P((int, int));
263extern void initparse __P((void));
264extern void ipf_dotuning __P((int, char *, ioctlfunc_t));
265extern int ipf_addrule __P((int, ioctlfunc_t, void *));
266extern void ipf_mutex_clean __P((void));
267extern int ipf_parsefile __P((int, addfunc_t, ioctlfunc_t *, char *));
268extern int ipf_parsesome __P((int, addfunc_t, ioctlfunc_t *, FILE *));
269extern void ipf_perror __P((int, char *));
270extern int ipf_perror_fd __P(( int, ioctlfunc_t, char *));
271extern void ipf_rwlock_clean __P((void));
272extern char *ipf_strerror __P((int));
273extern void ipferror __P((int, char *));
274extern int ipmon_parsefile __P((char *));
275extern int ipmon_parsesome __P((FILE *));
276extern int ipnat_addrule __P((int, ioctlfunc_t, void *));
277extern int ipnat_parsefile __P((int, addfunc_t, ioctlfunc_t, char *));
278extern int ipnat_parsesome __P((int, addfunc_t, ioctlfunc_t, FILE *));
279extern int ippool_parsefile __P((int, char *, ioctlfunc_t));
280extern int ippool_parsesome __P((int, FILE *, ioctlfunc_t));
281extern int kmemcpywrap __P((void *, void *, size_t));
282extern char *kvatoname __P((ipfunc_t, ioctlfunc_t));
283extern int load_dstlist __P((struct ippool_dst *, ioctlfunc_t,
284 ipf_dstnode_t *));
285extern int load_dstlistnode __P((int, char *, struct ipf_dstnode *,
286 ioctlfunc_t));
287extern alist_t *load_file __P((char *));
288extern int load_hash __P((struct iphtable_s *, struct iphtent_s *,
289 ioctlfunc_t));
290extern int load_hashnode __P((int, char *, struct iphtent_s *, int,
291 ioctlfunc_t));
292extern alist_t *load_http __P((char *));
293extern int load_pool __P((struct ip_pool_s *list, ioctlfunc_t));
294extern int load_poolnode __P((int, char *, ip_pool_node_t *, int, ioctlfunc_t));
295extern alist_t *load_url __P((char *));
296extern alist_t *make_range __P((int, struct in_addr, struct in_addr));
297extern void mb_hexdump __P((mb_t *, FILE *));
298extern ipfunc_t nametokva __P((char *, ioctlfunc_t));
299extern void nat_setgroupmap __P((struct ipnat *));
300extern int ntomask __P((int, int, u_32_t *));
301extern u_32_t optname __P((char ***, u_short *, int));
302extern wordtab_t *parsefields __P((wordtab_t *, char *));
303extern int *parseipfexpr __P((char *, char **));
304extern int parsewhoisline __P((char *, addrfamily_t *, addrfamily_t *));
305extern void pool_close __P((void));
306extern int pool_fd __P((void));
307extern int pool_ioctl __P((ioctlfunc_t, ioctlcmd_t, void *));
308extern int pool_open __P((void));
309extern char *portname __P((int, int));
310extern int pri_findname __P((char *));
311extern char *pri_toname __P((int));
312extern void print_toif __P((int, char *, char *, struct frdest *));
313extern void printaps __P((ap_session_t *, int, int));
314extern void printaddr __P((int, int, char *, int, u_32_t *, u_32_t *));
315extern void printbuf __P((char *, int, int));
316extern void printfieldhdr __P((wordtab_t *, wordtab_t *));
317extern void printfr __P((struct frentry *, ioctlfunc_t));
318extern struct iphtable_s *printhash __P((struct iphtable_s *, copyfunc_t,
319 char *, int, wordtab_t *));
320extern struct iphtable_s *printhash_live __P((iphtable_t *, int, char *,
321 int, wordtab_t *));
322extern ippool_dst_t *printdstl_live __P((ippool_dst_t *, int, char *,
323 int, wordtab_t *));
324extern void printhashdata __P((iphtable_t *, int));
325extern struct iphtent_s *printhashnode __P((struct iphtable_s *,
326 struct iphtent_s *,
327 copyfunc_t, int, wordtab_t *));
328extern void printhost __P((int, u_32_t *));
329extern void printhostmask __P((int, u_32_t *, u_32_t *));
330extern void printip __P((int, u_32_t *));
331extern void printlog __P((struct frentry *));
332extern void printlookup __P((char *, i6addr_t *addr, i6addr_t *mask));
333extern void printmask __P((int, u_32_t *));
334extern void printnataddr __P((int, char *, nat_addr_t *, int));
335extern void printnatfield __P((nat_t *, int));
336extern void printnatside __P((char *, nat_stat_side_t *));
337extern void printpacket __P((int, mb_t *));
338extern void printpacket6 __P((int, mb_t *));
339extern struct ippool_dst *printdstlist __P((struct ippool_dst *, copyfunc_t,
340 char *, int, ipf_dstnode_t *,
341 wordtab_t *));
342extern void printdstlistdata __P((ippool_dst_t *, int));
343extern ipf_dstnode_t *printdstlistnode __P((ipf_dstnode_t *, copyfunc_t,
344 int, wordtab_t *));
345extern void printdstlistpolicy __P((ippool_policy_t));
346extern struct ip_pool_s *printpool __P((struct ip_pool_s *, copyfunc_t,
347 char *, int, wordtab_t *));
348extern struct ip_pool_s *printpool_live __P((struct ip_pool_s *, int,
349 char *, int, wordtab_t *));
350extern void printpooldata __P((ip_pool_t *, int));
351extern void printpoolfield __P((void *, int, int));
352extern struct ip_pool_node *printpoolnode __P((struct ip_pool_node *,
353 int, wordtab_t *));
354extern void printproto __P((struct protoent *, int, struct ipnat *));
355extern void printportcmp __P((int, struct frpcmp *));
356extern void printstatefield __P((ipstate_t *, int));
357extern void printtqtable __P((ipftq_t *));
358extern void printtunable __P((ipftune_t *));
359extern void printunit __P((int));
360extern void optprint __P((u_short *, u_long, u_long));
361#ifdef USE_INET6
362extern void optprintv6 __P((u_short *, u_long, u_long));
363#endif
364extern int remove_hash __P((struct iphtable_s *, ioctlfunc_t));
365extern int remove_hashnode __P((int, char *, struct iphtent_s *, ioctlfunc_t));
366extern int remove_pool __P((ip_pool_t *, ioctlfunc_t));
367extern int remove_poolnode __P((int, char *, ip_pool_node_t *, ioctlfunc_t));
368extern u_char tcpflags __P((char *));
369extern void printc __P((struct frentry *));
370extern void printC __P((int));
371extern void emit __P((int, int, void *, struct frentry *));
372extern u_char secbit __P((int));
373extern u_char seclevel __P((char *));
374extern void printfraginfo __P((char *, struct ipfr *));
375extern void printifname __P((char *, char *, void *));
376extern char *hostname __P((int, const void *));
377extern struct ipstate *printstate __P((struct ipstate *, int, u_long));
378extern void printsbuf __P((char *));
379extern void printnat __P((struct ipnat *, int));
380extern void printactiveaddress __P((int, char *, i6addr_t *, char *));
381extern void printactivenat __P((struct nat *, int, u_long));
382extern void printhostmap __P((struct hostmap *, u_int));
383extern void printtcpflags __P((u_32_t, u_32_t));
384extern void printipfexpr __P((int *));
385extern void printstatefield __P((ipstate_t *, int));
386extern void printstatefieldhdr __P((int));
387extern int sendtrap_v1_0 __P((int, char *, char *, int, time_t));
388extern int sendtrap_v2_0 __P((int, char *, char *, int));
389extern int vtof __P((int));
390
391extern void set_variable __P((char *, char *));
392extern char *get_variable __P((char *, char **, int));
393extern void resetlexer __P((void));
394
395extern void debug __P((int, char *, ...));
396extern void verbose __P((int, char *, ...));
397extern void ipfkdebug __P((char *, ...));
398extern void ipfkverbose __P((char *, ...));
399
400#if SOLARIS
401extern int gethostname __P((char *, int ));
402extern void sync __P((void));
403#endif
404
405#endif /* __IPF_H__ */
406