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pf.c (130397) pf.c (130613)
1/* $FreeBSD: head/sys/contrib/pf/net/pf.c 130397 2004-06-13 01:36:31Z mlaier $ */
2/* $OpenBSD: pf.c,v 1.389.2.4 2004/04/30 23:27:57 brad Exp $ */
1/* $FreeBSD: head/sys/contrib/pf/net/pf.c 130613 2004-06-16 23:24:02Z mlaier $ */
2/* $OpenBSD: pf.c,v 1.433 2004/03/26 22:20:57 dhartmei Exp $ */
3
4/*
5 * Copyright (c) 2001 Daniel Hartmeier
3
4/*
5 * Copyright (c) 2001 Daniel Hartmeier
6 * Copyright (c) 2002,2003 Henning Brauer
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * - Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.

--- 43 unchanged lines hidden (view full) ---

57#include <sys/mbuf.h>
58#include <sys/filio.h>
59#include <sys/socket.h>
60#include <sys/socketvar.h>
61#include <sys/kernel.h>
62#include <sys/time.h>
63#ifdef __FreeBSD__
64#include <sys/sysctl.h>
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * - Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.

--- 43 unchanged lines hidden (view full) ---

58#include <sys/mbuf.h>
59#include <sys/filio.h>
60#include <sys/socket.h>
61#include <sys/socketvar.h>
62#include <sys/kernel.h>
63#include <sys/time.h>
64#ifdef __FreeBSD__
65#include <sys/sysctl.h>
66#include <sys/endian.h>
65#else
66#include <sys/pool.h>
67#endif
68
69#include <net/if.h>
70#include <net/if_types.h>
71#include <net/bpf.h>
72#include <net/route.h>

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86#include <netinet/udp_var.h>
87#include <netinet/icmp_var.h>
88
89#ifndef __FreeBSD__
90#include <dev/rndvar.h>
91#endif
92#include <net/pfvar.h>
93#include <net/if_pflog.h>
67#else
68#include <sys/pool.h>
69#endif
70
71#include <net/if.h>
72#include <net/if_types.h>
73#include <net/bpf.h>
74#include <net/route.h>

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88#include <netinet/udp_var.h>
89#include <netinet/icmp_var.h>
90
91#ifndef __FreeBSD__
92#include <dev/rndvar.h>
93#endif
94#include <net/pfvar.h>
95#include <net/if_pflog.h>
96
97#if NPFSYNC > 0
94#include <net/if_pfsync.h>
98#include <net/if_pfsync.h>
99#endif /* NPFSYNC > 0 */
95
96#ifdef INET6
97#include <netinet/ip6.h>
98#include <netinet/in_pcb.h>
99#include <netinet/icmp6.h>
100#include <netinet6/nd6.h>
101#ifdef __FreeBSD__
102#include <netinet6/ip6_var.h>
103#include <netinet6/in6_pcb.h>
104#endif
105#endif /* INET6 */
106
100
101#ifdef INET6
102#include <netinet/ip6.h>
103#include <netinet/in_pcb.h>
104#include <netinet/icmp6.h>
105#include <netinet6/nd6.h>
106#ifdef __FreeBSD__
107#include <netinet6/ip6_var.h>
108#include <netinet6/in6_pcb.h>
109#endif
110#endif /* INET6 */
111
107#ifdef ALTQ
108#include <altq/if_altq.h>
109#endif
110
111#ifdef __FreeBSD__
112#include <machine/in_cksum.h>
112#ifdef __FreeBSD__
113#include <machine/in_cksum.h>
113#if (__FreeBSD_version >= 500112)
114#include <sys/limits.h>
114#include <sys/limits.h>
115#else
116#include <machine/limits.h>
117#endif
118#include <sys/ucred.h>
115#include <sys/ucred.h>
119#endif
120
116
121#ifdef __FreeBSD__
122extern int ip_optcopy(struct ip *, struct ip *);
117extern int ip_optcopy(struct ip *, struct ip *);
123#if (__FreeBSD_version < 501105)
124int ip_fragment(struct ip *ip, struct mbuf **m_frag, int mtu,
125 u_long if_hwassist_flags, int sw_csum);
126#endif
118#endif
127#endif
128
129#define DPFPRINTF(n, x) if (pf_status.debug >= (n)) printf x
119
120#define DPFPRINTF(n, x) if (pf_status.debug >= (n)) printf x
130struct pf_state_tree;
131
132/*
133 * Global variables
134 */
135
136struct pf_anchorqueue pf_anchors;
137struct pf_ruleset pf_main_ruleset;
138struct pf_altqqueue pf_altqs[2];
139struct pf_palist pf_pabuf;
140struct pf_altqqueue *pf_altqs_active;
141struct pf_altqqueue *pf_altqs_inactive;
142struct pf_status pf_status;
121
122/*
123 * Global variables
124 */
125
126struct pf_anchorqueue pf_anchors;
127struct pf_ruleset pf_main_ruleset;
128struct pf_altqqueue pf_altqs[2];
129struct pf_palist pf_pabuf;
130struct pf_altqqueue *pf_altqs_active;
131struct pf_altqqueue *pf_altqs_inactive;
132struct pf_status pf_status;
143struct ifnet *status_ifp;
144
145u_int32_t ticket_altqs_active;
146u_int32_t ticket_altqs_inactive;
133
134u_int32_t ticket_altqs_active;
135u_int32_t ticket_altqs_inactive;
136int altqs_inactive_open;
147u_int32_t ticket_pabuf;
148
149#ifdef __FreeBSD__
150struct callout pf_expire_to; /* expire timeout */
151#else
152struct timeout pf_expire_to; /* expire timeout */
153#endif
154
155
156#ifdef __FreeBSD__
137u_int32_t ticket_pabuf;
138
139#ifdef __FreeBSD__
140struct callout pf_expire_to; /* expire timeout */
141#else
142struct timeout pf_expire_to; /* expire timeout */
143#endif
144
145
146#ifdef __FreeBSD__
157uma_zone_t pf_tree_pl, pf_rule_pl, pf_addr_pl;
147uma_zone_t pf_src_tree_pl, pf_rule_pl;
158uma_zone_t pf_state_pl, pf_altq_pl, pf_pooladdr_pl;
159#else
148uma_zone_t pf_state_pl, pf_altq_pl, pf_pooladdr_pl;
149#else
160struct pool pf_tree_pl, pf_rule_pl, pf_addr_pl;
150struct pool pf_src_tree_pl, pf_rule_pl;
161struct pool pf_state_pl, pf_altq_pl, pf_pooladdr_pl;
162#endif
163
151struct pool pf_state_pl, pf_altq_pl, pf_pooladdr_pl;
152#endif
153
164void pf_dynaddr_update(void *);
165#ifdef __FreeBSD__
166void pf_dynaddr_update_event(void *arg, struct ifnet *ifp);
167#endif
168void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t);
169void pf_print_state(struct pf_state *);
170void pf_print_flags(u_int8_t);
171
172u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
173 u_int8_t);
174void pf_change_ap(struct pf_addr *, u_int16_t *,
175 u_int16_t *, u_int16_t *, struct pf_addr *,

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184 u_int16_t *, u_int8_t, sa_family_t);
185void pf_send_tcp(const struct pf_rule *, sa_family_t,
186 const struct pf_addr *, const struct pf_addr *,
187 u_int16_t, u_int16_t, u_int32_t, u_int32_t,
188 u_int8_t, u_int16_t, u_int16_t, u_int8_t);
189void pf_send_icmp(struct mbuf *, u_int8_t, u_int8_t,
190 sa_family_t, struct pf_rule *);
191struct pf_rule *pf_match_translation(struct pf_pdesc *, struct mbuf *,
154void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t);
155void pf_print_state(struct pf_state *);
156void pf_print_flags(u_int8_t);
157
158u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
159 u_int8_t);
160void pf_change_ap(struct pf_addr *, u_int16_t *,
161 u_int16_t *, u_int16_t *, struct pf_addr *,

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170 u_int16_t *, u_int8_t, sa_family_t);
171void pf_send_tcp(const struct pf_rule *, sa_family_t,
172 const struct pf_addr *, const struct pf_addr *,
173 u_int16_t, u_int16_t, u_int32_t, u_int32_t,
174 u_int8_t, u_int16_t, u_int16_t, u_int8_t);
175void pf_send_icmp(struct mbuf *, u_int8_t, u_int8_t,
176 sa_family_t, struct pf_rule *);
177struct pf_rule *pf_match_translation(struct pf_pdesc *, struct mbuf *,
192 int, int, struct ifnet *,
178 int, int, struct pfi_kif *,
193 struct pf_addr *, u_int16_t, struct pf_addr *,
194 u_int16_t, int);
195struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *,
179 struct pf_addr *, u_int16_t, struct pf_addr *,
180 u_int16_t, int);
181struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *,
196 int, int, struct ifnet *,
182 int, int, struct pfi_kif *, struct pf_src_node **,
197 struct pf_addr *, u_int16_t,
198 struct pf_addr *, u_int16_t,
199 struct pf_addr *, u_int16_t *);
200int pf_test_tcp(struct pf_rule **, struct pf_state **,
183 struct pf_addr *, u_int16_t,
184 struct pf_addr *, u_int16_t,
185 struct pf_addr *, u_int16_t *);
186int pf_test_tcp(struct pf_rule **, struct pf_state **,
201 int, struct ifnet *, struct mbuf *, int, int,
187 int, struct pfi_kif *, struct mbuf *, int,
202 void *, struct pf_pdesc *, struct pf_rule **,
203 struct pf_ruleset **);
204int pf_test_udp(struct pf_rule **, struct pf_state **,
188 void *, struct pf_pdesc *, struct pf_rule **,
189 struct pf_ruleset **);
190int pf_test_udp(struct pf_rule **, struct pf_state **,
205 int, struct ifnet *, struct mbuf *, int, int,
191 int, struct pfi_kif *, struct mbuf *, int,
206 void *, struct pf_pdesc *, struct pf_rule **,
207 struct pf_ruleset **);
208int pf_test_icmp(struct pf_rule **, struct pf_state **,
192 void *, struct pf_pdesc *, struct pf_rule **,
193 struct pf_ruleset **);
194int pf_test_icmp(struct pf_rule **, struct pf_state **,
209 int, struct ifnet *, struct mbuf *, int, int,
195 int, struct pfi_kif *, struct mbuf *, int,
210 void *, struct pf_pdesc *, struct pf_rule **,
211 struct pf_ruleset **);
212int pf_test_other(struct pf_rule **, struct pf_state **,
196 void *, struct pf_pdesc *, struct pf_rule **,
197 struct pf_ruleset **);
198int pf_test_other(struct pf_rule **, struct pf_state **,
213 int, struct ifnet *, struct mbuf *, int, void *,
199 int, struct pfi_kif *, struct mbuf *, int, void *,
214 struct pf_pdesc *, struct pf_rule **,
215 struct pf_ruleset **);
216int pf_test_fragment(struct pf_rule **, int,
200 struct pf_pdesc *, struct pf_rule **,
201 struct pf_ruleset **);
202int pf_test_fragment(struct pf_rule **, int,
217 struct ifnet *, struct mbuf *, void *,
203 struct pfi_kif *, struct mbuf *, void *,
218 struct pf_pdesc *, struct pf_rule **,
219 struct pf_ruleset **);
220int pf_test_state_tcp(struct pf_state **, int,
204 struct pf_pdesc *, struct pf_rule **,
205 struct pf_ruleset **);
206int pf_test_state_tcp(struct pf_state **, int,
221 struct ifnet *, struct mbuf *, int, int,
207 struct pfi_kif *, struct mbuf *, int,
222 void *, struct pf_pdesc *, u_short *);
223int pf_test_state_udp(struct pf_state **, int,
208 void *, struct pf_pdesc *, u_short *);
209int pf_test_state_udp(struct pf_state **, int,
224 struct ifnet *, struct mbuf *, int, int,
210 struct pfi_kif *, struct mbuf *, int,
225 void *, struct pf_pdesc *);
226int pf_test_state_icmp(struct pf_state **, int,
211 void *, struct pf_pdesc *);
212int pf_test_state_icmp(struct pf_state **, int,
227 struct ifnet *, struct mbuf *, int, int,
213 struct pfi_kif *, struct mbuf *, int,
228 void *, struct pf_pdesc *);
229int pf_test_state_other(struct pf_state **, int,
214 void *, struct pf_pdesc *);
215int pf_test_state_other(struct pf_state **, int,
230 struct ifnet *, struct pf_pdesc *);
216 struct pfi_kif *, struct pf_pdesc *);
231struct pf_tag *pf_get_tag(struct mbuf *);
232int pf_match_tag(struct mbuf *, struct pf_rule *,
217struct pf_tag *pf_get_tag(struct mbuf *);
218int pf_match_tag(struct mbuf *, struct pf_rule *,
233 struct pf_rule *, struct pf_rule *,
234 struct pf_tag *, int *);
219 struct pf_rule *, struct pf_tag *, int *);
235void pf_hash(struct pf_addr *, struct pf_addr *,
236 struct pf_poolhashkey *, sa_family_t);
220void pf_hash(struct pf_addr *, struct pf_addr *,
221 struct pf_poolhashkey *, sa_family_t);
237int pf_map_addr(u_int8_t, struct pf_pool *,
222int pf_map_addr(u_int8_t, struct pf_rule *,
238 struct pf_addr *, struct pf_addr *,
223 struct pf_addr *, struct pf_addr *,
239 struct pf_addr *);
240int pf_get_sport(sa_family_t, u_int8_t, struct pf_pool *,
224 struct pf_addr *, struct pf_src_node **);
225int pf_get_sport(sa_family_t, u_int8_t, struct pf_rule *,
241 struct pf_addr *, struct pf_addr *, u_int16_t,
226 struct pf_addr *, struct pf_addr *, u_int16_t,
242 struct pf_addr *, u_int16_t*, u_int16_t, u_int16_t);
227 struct pf_addr *, u_int16_t*, u_int16_t, u_int16_t,
228 struct pf_src_node **);
243void pf_route(struct mbuf **, struct pf_rule *, int,
244 struct ifnet *, struct pf_state *);
245void pf_route6(struct mbuf **, struct pf_rule *, int,
246 struct ifnet *, struct pf_state *);
229void pf_route(struct mbuf **, struct pf_rule *, int,
230 struct ifnet *, struct pf_state *);
231void pf_route6(struct mbuf **, struct pf_rule *, int,
232 struct ifnet *, struct pf_state *);
247int pf_socket_lookup(uid_t *, gid_t *, int, sa_family_t,
233int pf_socket_lookup(uid_t *, gid_t *,
248 int, struct pf_pdesc *);
249u_int8_t pf_get_wscale(struct mbuf *, int, u_int16_t,
250 sa_family_t);
251u_int16_t pf_get_mss(struct mbuf *, int, u_int16_t,
252 sa_family_t);
253u_int16_t pf_calc_mss(struct pf_addr *, sa_family_t,
254 u_int16_t);
255void pf_set_rt_ifp(struct pf_state *,
256 struct pf_addr *);
257int pf_check_proto_cksum(struct mbuf *, int, int,
258 u_int8_t, sa_family_t);
259int pf_addr_wrap_neq(struct pf_addr_wrap *,
260 struct pf_addr_wrap *);
234 int, struct pf_pdesc *);
235u_int8_t pf_get_wscale(struct mbuf *, int, u_int16_t,
236 sa_family_t);
237u_int16_t pf_get_mss(struct mbuf *, int, u_int16_t,
238 sa_family_t);
239u_int16_t pf_calc_mss(struct pf_addr *, sa_family_t,
240 u_int16_t);
241void pf_set_rt_ifp(struct pf_state *,
242 struct pf_addr *);
243int pf_check_proto_cksum(struct mbuf *, int, int,
244 u_int8_t, sa_family_t);
245int pf_addr_wrap_neq(struct pf_addr_wrap *,
246 struct pf_addr_wrap *);
247static int pf_add_mbuf_tag(struct mbuf *, u_int);
248struct pf_state *pf_find_state_recurse(struct pfi_kif *,
249 struct pf_state *, u_int8_t);
261
262#ifdef __FreeBSD__
263int in4_cksum(struct mbuf *m, u_int8_t nxt, int off, int len);
264
265struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX];
266#else
250
251#ifdef __FreeBSD__
252int in4_cksum(struct mbuf *m, u_int8_t nxt, int off, int len);
253
254struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX];
255#else
267struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX] =
268 { { &pf_state_pl, PFSTATE_HIWAT }, { &pf_frent_pl, PFFRAG_FRENT_HIWAT } };
256struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX] = {
257 { &pf_state_pl, PFSTATE_HIWAT },
258 { &pf_src_tree_pl, PFSNODE_HIWAT },
259 { &pf_frent_pl, PFFRAG_FRENT_HIWAT }
260};
269#endif
270
271#define STATE_LOOKUP() \
272 do { \
273 if (direction == PF_IN) \
261#endif
262
263#define STATE_LOOKUP() \
264 do { \
265 if (direction == PF_IN) \
274 *state = pf_find_state(&tree_ext_gwy, &key); \
266 *state = pf_find_state_recurse( \
267 kif, &key, PF_EXT_GWY); \
275 else \
268 else \
276 *state = pf_find_state(&tree_lan_ext, &key); \
269 *state = pf_find_state_recurse( \
270 kif, &key, PF_LAN_EXT); \
277 if (*state == NULL) \
278 return (PF_DROP); \
279 if (direction == PF_OUT && \
280 (((*state)->rule.ptr->rt == PF_ROUTETO && \
281 (*state)->rule.ptr->direction == PF_OUT) || \
282 ((*state)->rule.ptr->rt == PF_REPLYTO && \
283 (*state)->rule.ptr->direction == PF_IN)) && \
271 if (*state == NULL) \
272 return (PF_DROP); \
273 if (direction == PF_OUT && \
274 (((*state)->rule.ptr->rt == PF_ROUTETO && \
275 (*state)->rule.ptr->direction == PF_OUT) || \
276 ((*state)->rule.ptr->rt == PF_REPLYTO && \
277 (*state)->rule.ptr->direction == PF_IN)) && \
284 (*state)->rt_ifp != NULL && \
285 (*state)->rt_ifp != ifp) \
278 (*state)->rt_kif != NULL && \
279 (*state)->rt_kif != kif) \
286 return (PF_PASS); \
287 } while (0)
288
289#define STATE_TRANSLATE(s) \
290 (s)->lan.addr.addr32[0] != (s)->gwy.addr.addr32[0] || \
291 ((s)->af == AF_INET6 && \
292 ((s)->lan.addr.addr32[1] != (s)->gwy.addr.addr32[1] || \
293 (s)->lan.addr.addr32[2] != (s)->gwy.addr.addr32[2] || \
294 (s)->lan.addr.addr32[3] != (s)->gwy.addr.addr32[3])) || \
295 (s)->lan.port != (s)->gwy.port
296
280 return (PF_PASS); \
281 } while (0)
282
283#define STATE_TRANSLATE(s) \
284 (s)->lan.addr.addr32[0] != (s)->gwy.addr.addr32[0] || \
285 ((s)->af == AF_INET6 && \
286 ((s)->lan.addr.addr32[1] != (s)->gwy.addr.addr32[1] || \
287 (s)->lan.addr.addr32[2] != (s)->gwy.addr.addr32[2] || \
288 (s)->lan.addr.addr32[3] != (s)->gwy.addr.addr32[3])) || \
289 (s)->lan.port != (s)->gwy.port
290
297static __inline int pf_state_compare(struct pf_tree_node *,
298 struct pf_tree_node *);
291#define BOUND_IFACE(r, k) (((r)->rule_flag & PFRULE_IFBOUND) ? (k) : \
292 ((r)->rule_flag & PFRULE_GRBOUND) ? (k)->pfik_parent : \
293 (k)->pfik_parent->pfik_parent)
299
294
300struct pf_state_tree tree_lan_ext, tree_ext_gwy;
301RB_GENERATE(pf_state_tree, pf_tree_node, entry, pf_state_compare);
295static __inline int pf_src_compare(struct pf_src_node *, struct pf_src_node *);
296static __inline int pf_state_compare_lan_ext(struct pf_state *,
297 struct pf_state *);
298static __inline int pf_state_compare_ext_gwy(struct pf_state *,
299 struct pf_state *);
300static __inline int pf_state_compare_id(struct pf_state *,
301 struct pf_state *);
302
302
303struct pf_src_tree tree_src_tracking;
304
305struct pf_state_tree_id tree_id;
306struct pf_state_queue state_updates;
307
308RB_GENERATE(pf_src_tree, pf_src_node, entry, pf_src_compare);
309RB_GENERATE(pf_state_tree_lan_ext, pf_state,
310 u.s.entry_lan_ext, pf_state_compare_lan_ext);
311RB_GENERATE(pf_state_tree_ext_gwy, pf_state,
312 u.s.entry_ext_gwy, pf_state_compare_ext_gwy);
313RB_GENERATE(pf_state_tree_id, pf_state,
314 u.s.entry_id, pf_state_compare_id);
315
303#ifdef __FreeBSD__
304static int
305#else
306static __inline int
307#endif
316#ifdef __FreeBSD__
317static int
318#else
319static __inline int
320#endif
308pf_state_compare(struct pf_tree_node *a, struct pf_tree_node *b)
321pf_src_compare(struct pf_src_node *a, struct pf_src_node *b)
309{
310 int diff;
311
322{
323 int diff;
324
325 if (a->rule.ptr > b->rule.ptr)
326 return (1);
327 if (a->rule.ptr < b->rule.ptr)
328 return (-1);
329 if ((diff = a->af - b->af) != 0)
330 return (diff);
331 switch (a->af) {
332#ifdef INET
333 case AF_INET:
334 if (a->addr.addr32[0] > b->addr.addr32[0])
335 return (1);
336 if (a->addr.addr32[0] < b->addr.addr32[0])
337 return (-1);
338 break;
339#endif /* INET */
340#ifdef INET6
341 case AF_INET6:
342 if (a->addr.addr32[3] > b->addr.addr32[3])
343 return (1);
344 if (a->addr.addr32[3] < b->addr.addr32[3])
345 return (-1);
346 if (a->addr.addr32[2] > b->addr.addr32[2])
347 return (1);
348 if (a->addr.addr32[2] < b->addr.addr32[2])
349 return (-1);
350 if (a->addr.addr32[1] > b->addr.addr32[1])
351 return (1);
352 if (a->addr.addr32[1] < b->addr.addr32[1])
353 return (-1);
354 if (a->addr.addr32[0] > b->addr.addr32[0])
355 return (1);
356 if (a->addr.addr32[0] < b->addr.addr32[0])
357 return (-1);
358 break;
359#endif /* INET6 */
360 }
361 return (0);
362}
363
364#ifdef __FreeBSD__
365static int
366#else
367static __inline int
368#endif
369pf_state_compare_lan_ext(struct pf_state *a, struct pf_state *b)
370{
371 int diff;
372
312 if ((diff = a->proto - b->proto) != 0)
313 return (diff);
314 if ((diff = a->af - b->af) != 0)
315 return (diff);
316 switch (a->af) {
317#ifdef INET
318 case AF_INET:
373 if ((diff = a->proto - b->proto) != 0)
374 return (diff);
375 if ((diff = a->af - b->af) != 0)
376 return (diff);
377 switch (a->af) {
378#ifdef INET
379 case AF_INET:
319 if (a->addr[0].addr32[0] > b->addr[0].addr32[0])
380 if (a->lan.addr.addr32[0] > b->lan.addr.addr32[0])
320 return (1);
381 return (1);
321 if (a->addr[0].addr32[0] < b->addr[0].addr32[0])
382 if (a->lan.addr.addr32[0] < b->lan.addr.addr32[0])
322 return (-1);
383 return (-1);
323 if (a->addr[1].addr32[0] > b->addr[1].addr32[0])
384 if (a->ext.addr.addr32[0] > b->ext.addr.addr32[0])
324 return (1);
385 return (1);
325 if (a->addr[1].addr32[0] < b->addr[1].addr32[0])
386 if (a->ext.addr.addr32[0] < b->ext.addr.addr32[0])
326 return (-1);
327 break;
328#endif /* INET */
329#ifdef INET6
330 case AF_INET6:
387 return (-1);
388 break;
389#endif /* INET */
390#ifdef INET6
391 case AF_INET6:
331 if (a->addr[0].addr32[3] > b->addr[0].addr32[3])
392 if (a->lan.addr.addr32[3] > b->lan.addr.addr32[3])
332 return (1);
393 return (1);
333 if (a->addr[0].addr32[3] < b->addr[0].addr32[3])
394 if (a->lan.addr.addr32[3] < b->lan.addr.addr32[3])
334 return (-1);
395 return (-1);
335 if (a->addr[1].addr32[3] > b->addr[1].addr32[3])
396 if (a->ext.addr.addr32[3] > b->ext.addr.addr32[3])
336 return (1);
397 return (1);
337 if (a->addr[1].addr32[3] < b->addr[1].addr32[3])
398 if (a->ext.addr.addr32[3] < b->ext.addr.addr32[3])
338 return (-1);
399 return (-1);
339 if (a->addr[0].addr32[2] > b->addr[0].addr32[2])
400 if (a->lan.addr.addr32[2] > b->lan.addr.addr32[2])
340 return (1);
401 return (1);
341 if (a->addr[0].addr32[2] < b->addr[0].addr32[2])
402 if (a->lan.addr.addr32[2] < b->lan.addr.addr32[2])
342 return (-1);
403 return (-1);
343 if (a->addr[1].addr32[2] > b->addr[1].addr32[2])
404 if (a->ext.addr.addr32[2] > b->ext.addr.addr32[2])
344 return (1);
405 return (1);
345 if (a->addr[1].addr32[2] < b->addr[1].addr32[2])
406 if (a->ext.addr.addr32[2] < b->ext.addr.addr32[2])
346 return (-1);
407 return (-1);
347 if (a->addr[0].addr32[1] > b->addr[0].addr32[1])
408 if (a->lan.addr.addr32[1] > b->lan.addr.addr32[1])
348 return (1);
409 return (1);
349 if (a->addr[0].addr32[1] < b->addr[0].addr32[1])
410 if (a->lan.addr.addr32[1] < b->lan.addr.addr32[1])
350 return (-1);
411 return (-1);
351 if (a->addr[1].addr32[1] > b->addr[1].addr32[1])
412 if (a->ext.addr.addr32[1] > b->ext.addr.addr32[1])
352 return (1);
413 return (1);
353 if (a->addr[1].addr32[1] < b->addr[1].addr32[1])
414 if (a->ext.addr.addr32[1] < b->ext.addr.addr32[1])
354 return (-1);
415 return (-1);
355 if (a->addr[0].addr32[0] > b->addr[0].addr32[0])
416 if (a->lan.addr.addr32[0] > b->lan.addr.addr32[0])
356 return (1);
417 return (1);
357 if (a->addr[0].addr32[0] < b->addr[0].addr32[0])
418 if (a->lan.addr.addr32[0] < b->lan.addr.addr32[0])
358 return (-1);
419 return (-1);
359 if (a->addr[1].addr32[0] > b->addr[1].addr32[0])
420 if (a->ext.addr.addr32[0] > b->ext.addr.addr32[0])
360 return (1);
421 return (1);
361 if (a->addr[1].addr32[0] < b->addr[1].addr32[0])
422 if (a->ext.addr.addr32[0] < b->ext.addr.addr32[0])
362 return (-1);
363 break;
364#endif /* INET6 */
365 }
366
423 return (-1);
424 break;
425#endif /* INET6 */
426 }
427
367 if ((diff = a->port[0] - b->port[0]) != 0)
428 if ((diff = a->lan.port - b->lan.port) != 0)
368 return (diff);
429 return (diff);
369 if ((diff = a->port[1] - b->port[1]) != 0)
430 if ((diff = a->ext.port - b->ext.port) != 0)
370 return (diff);
371
372 return (0);
373}
374
431 return (diff);
432
433 return (0);
434}
435
436#ifdef __FreeBSD__
437static int
438#else
439static __inline int
440#endif
441pf_state_compare_ext_gwy(struct pf_state *a, struct pf_state *b)
442{
443 int diff;
444
445 if ((diff = a->proto - b->proto) != 0)
446 return (diff);
447 if ((diff = a->af - b->af) != 0)
448 return (diff);
449 switch (a->af) {
450#ifdef INET
451 case AF_INET:
452 if (a->ext.addr.addr32[0] > b->ext.addr.addr32[0])
453 return (1);
454 if (a->ext.addr.addr32[0] < b->ext.addr.addr32[0])
455 return (-1);
456 if (a->gwy.addr.addr32[0] > b->gwy.addr.addr32[0])
457 return (1);
458 if (a->gwy.addr.addr32[0] < b->gwy.addr.addr32[0])
459 return (-1);
460 break;
461#endif /* INET */
375#ifdef INET6
462#ifdef INET6
463 case AF_INET6:
464 if (a->ext.addr.addr32[3] > b->ext.addr.addr32[3])
465 return (1);
466 if (a->ext.addr.addr32[3] < b->ext.addr.addr32[3])
467 return (-1);
468 if (a->gwy.addr.addr32[3] > b->gwy.addr.addr32[3])
469 return (1);
470 if (a->gwy.addr.addr32[3] < b->gwy.addr.addr32[3])
471 return (-1);
472 if (a->ext.addr.addr32[2] > b->ext.addr.addr32[2])
473 return (1);
474 if (a->ext.addr.addr32[2] < b->ext.addr.addr32[2])
475 return (-1);
476 if (a->gwy.addr.addr32[2] > b->gwy.addr.addr32[2])
477 return (1);
478 if (a->gwy.addr.addr32[2] < b->gwy.addr.addr32[2])
479 return (-1);
480 if (a->ext.addr.addr32[1] > b->ext.addr.addr32[1])
481 return (1);
482 if (a->ext.addr.addr32[1] < b->ext.addr.addr32[1])
483 return (-1);
484 if (a->gwy.addr.addr32[1] > b->gwy.addr.addr32[1])
485 return (1);
486 if (a->gwy.addr.addr32[1] < b->gwy.addr.addr32[1])
487 return (-1);
488 if (a->ext.addr.addr32[0] > b->ext.addr.addr32[0])
489 return (1);
490 if (a->ext.addr.addr32[0] < b->ext.addr.addr32[0])
491 return (-1);
492 if (a->gwy.addr.addr32[0] > b->gwy.addr.addr32[0])
493 return (1);
494 if (a->gwy.addr.addr32[0] < b->gwy.addr.addr32[0])
495 return (-1);
496 break;
497#endif /* INET6 */
498 }
499
500 if ((diff = a->ext.port - b->ext.port) != 0)
501 return (diff);
502 if ((diff = a->gwy.port - b->gwy.port) != 0)
503 return (diff);
504
505 return (0);
506}
507
508#ifdef __FreeBSD__
509static int
510#else
511static __inline int
512#endif
513pf_state_compare_id(struct pf_state *a, struct pf_state *b)
514{
515 if (a->id > b->id)
516 return (1);
517 if (a->id < b->id)
518 return (-1);
519 if (a->creatorid > b->creatorid)
520 return (1);
521 if (a->creatorid < b->creatorid)
522 return (-1);
523
524 return (0);
525}
526
527#ifdef INET6
376void
377pf_addrcpy(struct pf_addr *dst, struct pf_addr *src, sa_family_t af)
378{
379 switch (af) {
380#ifdef INET
381 case AF_INET:
382 dst->addr32[0] = src->addr32[0];
383 break;

--- 4 unchanged lines hidden (view full) ---

388 dst->addr32[2] = src->addr32[2];
389 dst->addr32[3] = src->addr32[3];
390 break;
391 }
392}
393#endif
394
395struct pf_state *
528void
529pf_addrcpy(struct pf_addr *dst, struct pf_addr *src, sa_family_t af)
530{
531 switch (af) {
532#ifdef INET
533 case AF_INET:
534 dst->addr32[0] = src->addr32[0];
535 break;

--- 4 unchanged lines hidden (view full) ---

540 dst->addr32[2] = src->addr32[2];
541 dst->addr32[3] = src->addr32[3];
542 break;
543 }
544}
545#endif
546
547struct pf_state *
396pf_find_state(struct pf_state_tree *tree, struct pf_tree_node *key)
548pf_find_state_byid(struct pf_state *key)
397{
549{
398 struct pf_tree_node *k;
550 pf_status.fcounters[FCNT_STATE_SEARCH]++;
551 return (RB_FIND(pf_state_tree_id, &tree_id, key));
552}
399
553
554struct pf_state *
555pf_find_state_recurse(struct pfi_kif *kif, struct pf_state *key, u_int8_t tree)
556{
557 struct pf_state *s;
558
400 pf_status.fcounters[FCNT_STATE_SEARCH]++;
559 pf_status.fcounters[FCNT_STATE_SEARCH]++;
401 k = RB_FIND(pf_state_tree, tree, key);
402 if (k)
403 return (k->state);
404 else
560
561 switch (tree) {
562 case PF_LAN_EXT:
563 for (; kif != NULL; kif = kif->pfik_parent) {
564 s = RB_FIND(pf_state_tree_lan_ext,
565 &kif->pfik_lan_ext, key);
566 if (s != NULL)
567 return (s);
568 }
405 return (NULL);
569 return (NULL);
570 case PF_EXT_GWY:
571 for (; kif != NULL; kif = kif->pfik_parent) {
572 s = RB_FIND(pf_state_tree_ext_gwy,
573 &kif->pfik_ext_gwy, key);
574 if (s != NULL)
575 return (s);
576 }
577 return (NULL);
578 default:
579 panic("pf_find_state_recurse");
580 }
406}
407
581}
582
583struct pf_state *
584pf_find_state_all(struct pf_state *key, u_int8_t tree, int *more)
585{
586 struct pf_state *s, *ss = NULL;
587 struct pfi_kif *kif;
588
589 pf_status.fcounters[FCNT_STATE_SEARCH]++;
590
591 switch (tree) {
592 case PF_LAN_EXT:
593 TAILQ_FOREACH(kif, &pfi_statehead, pfik_w_states) {
594 s = RB_FIND(pf_state_tree_lan_ext,
595 &kif->pfik_lan_ext, key);
596 if (s == NULL)
597 continue;
598 if (more == NULL)
599 return (s);
600 ss = s;
601 (*more)++;
602 }
603 return (ss);
604 case PF_EXT_GWY:
605 TAILQ_FOREACH(kif, &pfi_statehead, pfik_w_states) {
606 s = RB_FIND(pf_state_tree_ext_gwy,
607 &kif->pfik_ext_gwy, key);
608 if (s == NULL)
609 continue;
610 if (more == NULL)
611 return (s);
612 ss = s;
613 (*more)++;
614 }
615 return (ss);
616 default:
617 panic("pf_find_state_all");
618 }
619}
620
408int
621int
409pf_insert_state(struct pf_state *state)
622pf_insert_src_node(struct pf_src_node **sn, struct pf_rule *rule,
623 struct pf_addr *src, sa_family_t af)
410{
624{
411 struct pf_tree_node *keya, *keyb;
625 struct pf_src_node k;
412
626
413 keya = pool_get(&pf_tree_pl, PR_NOWAIT);
414 if (keya == NULL)
415 return (-1);
416 keya->state = state;
417 keya->proto = state->proto;
418 keya->af = state->af;
419 PF_ACPY(&keya->addr[0], &state->lan.addr, state->af);
420 keya->port[0] = state->lan.port;
421 PF_ACPY(&keya->addr[1], &state->ext.addr, state->af);
422 keya->port[1] = state->ext.port;
627 if (*sn == NULL) {
628 k.af = af;
629 PF_ACPY(&k.addr, src, af);
630 if (rule->rule_flag & PFRULE_RULESRCTRACK ||
631 rule->rpool.opts & PF_POOL_STICKYADDR)
632 k.rule.ptr = rule;
633 else
634 k.rule.ptr = NULL;
635 pf_status.scounters[SCNT_SRC_NODE_SEARCH]++;
636 *sn = RB_FIND(pf_src_tree, &tree_src_tracking, &k);
637 }
638 if (*sn == NULL) {
639 if (!rule->max_src_nodes ||
640 rule->src_nodes < rule->max_src_nodes)
641 (*sn) = pool_get(&pf_src_tree_pl, PR_NOWAIT);
642 if ((*sn) == NULL)
643 return (-1);
644 bzero(*sn, sizeof(struct pf_src_node));
645 (*sn)->af = af;
646 if (rule->rule_flag & PFRULE_RULESRCTRACK ||
647 rule->rpool.opts & PF_POOL_STICKYADDR)
648 (*sn)->rule.ptr = rule;
649 else
650 (*sn)->rule.ptr = NULL;
651 PF_ACPY(&(*sn)->addr, src, af);
652 if (RB_INSERT(pf_src_tree,
653 &tree_src_tracking, *sn) != NULL) {
654 if (pf_status.debug >= PF_DEBUG_MISC) {
655 printf("pf: src_tree insert failed: ");
656 pf_print_host(&(*sn)->addr, 0, af);
657 printf("\n");
658 }
659 pool_put(&pf_src_tree_pl, *sn);
660 return (-1);
661 }
662#ifdef __FreeBSD__
663 (*sn)->creation = time_second;
664#else
665 (*sn)->creation = time.tv_sec;
666#endif
667 (*sn)->ruletype = rule->action;
668 if ((*sn)->rule.ptr != NULL)
669 (*sn)->rule.ptr->src_nodes++;
670 pf_status.scounters[SCNT_SRC_NODE_INSERT]++;
671 pf_status.src_nodes++;
672 } else {
673 if (rule->max_src_states &&
674 (*sn)->states >= rule->max_src_states)
675 return (-1);
676 }
677 return (0);
678}
423
679
680int
681pf_insert_state(struct pfi_kif *kif, struct pf_state *state)
682{
424 /* Thou MUST NOT insert multiple duplicate keys */
683 /* Thou MUST NOT insert multiple duplicate keys */
425 if (RB_INSERT(pf_state_tree, &tree_lan_ext, keya) != NULL) {
684 state->u.s.kif = kif;
685 if (RB_INSERT(pf_state_tree_lan_ext, &kif->pfik_lan_ext, state)) {
426 if (pf_status.debug >= PF_DEBUG_MISC) {
427 printf("pf: state insert failed: tree_lan_ext");
428 printf(" lan: ");
429 pf_print_host(&state->lan.addr, state->lan.port,
430 state->af);
431 printf(" gwy: ");
432 pf_print_host(&state->gwy.addr, state->gwy.port,
433 state->af);
434 printf(" ext: ");
435 pf_print_host(&state->ext.addr, state->ext.port,
436 state->af);
686 if (pf_status.debug >= PF_DEBUG_MISC) {
687 printf("pf: state insert failed: tree_lan_ext");
688 printf(" lan: ");
689 pf_print_host(&state->lan.addr, state->lan.port,
690 state->af);
691 printf(" gwy: ");
692 pf_print_host(&state->gwy.addr, state->gwy.port,
693 state->af);
694 printf(" ext: ");
695 pf_print_host(&state->ext.addr, state->ext.port,
696 state->af);
697 if (state->sync_flags & PFSTATE_FROMSYNC)
698 printf(" (from sync)");
437 printf("\n");
438 }
699 printf("\n");
700 }
439 pool_put(&pf_tree_pl, keya);
440 return (-1);
441 }
442
701 return (-1);
702 }
703
443 keyb = pool_get(&pf_tree_pl, PR_NOWAIT);
444 if (keyb == NULL) {
445 /* Need to pull out the other state */
446 RB_REMOVE(pf_state_tree, &tree_lan_ext, keya);
447 pool_put(&pf_tree_pl, keya);
448 return (-1);
449 }
450 keyb->state = state;
451 keyb->proto = state->proto;
452 keyb->af = state->af;
453 PF_ACPY(&keyb->addr[0], &state->ext.addr, state->af);
454 keyb->port[0] = state->ext.port;
455 PF_ACPY(&keyb->addr[1], &state->gwy.addr, state->af);
456 keyb->port[1] = state->gwy.port;
457
458 if (RB_INSERT(pf_state_tree, &tree_ext_gwy, keyb) != NULL) {
704 if (RB_INSERT(pf_state_tree_ext_gwy, &kif->pfik_ext_gwy, state)) {
459 if (pf_status.debug >= PF_DEBUG_MISC) {
460 printf("pf: state insert failed: tree_ext_gwy");
461 printf(" lan: ");
462 pf_print_host(&state->lan.addr, state->lan.port,
463 state->af);
464 printf(" gwy: ");
465 pf_print_host(&state->gwy.addr, state->gwy.port,
466 state->af);
467 printf(" ext: ");
468 pf_print_host(&state->ext.addr, state->ext.port,
469 state->af);
705 if (pf_status.debug >= PF_DEBUG_MISC) {
706 printf("pf: state insert failed: tree_ext_gwy");
707 printf(" lan: ");
708 pf_print_host(&state->lan.addr, state->lan.port,
709 state->af);
710 printf(" gwy: ");
711 pf_print_host(&state->gwy.addr, state->gwy.port,
712 state->af);
713 printf(" ext: ");
714 pf_print_host(&state->ext.addr, state->ext.port,
715 state->af);
716 if (state->sync_flags & PFSTATE_FROMSYNC)
717 printf(" (from sync)");
470 printf("\n");
471 }
718 printf("\n");
719 }
472 RB_REMOVE(pf_state_tree, &tree_lan_ext, keya);
473 pool_put(&pf_tree_pl, keya);
474 pool_put(&pf_tree_pl, keyb);
720 RB_REMOVE(pf_state_tree_lan_ext, &kif->pfik_lan_ext, state);
475 return (-1);
476 }
477
721 return (-1);
722 }
723
724 if (state->id == 0 && state->creatorid == 0) {
725 state->id = htobe64(pf_status.stateid++);
726 state->creatorid = pf_status.hostid;
727 }
728 if (RB_INSERT(pf_state_tree_id, &tree_id, state) != NULL) {
729 if (pf_status.debug >= PF_DEBUG_MISC) {
730#ifdef __FreeBSD__
731 printf("pf: state insert failed: "
732 "id: %016llx creatorid: %08x",
733 (long long)be64toh(state->id),
734 ntohl(state->creatorid));
735#else
736 printf("pf: state insert failed: "
737 "id: %016llx creatorid: %08x",
738 betoh64(state->id), ntohl(state->creatorid));
739#endif
740 if (state->sync_flags & PFSTATE_FROMSYNC)
741 printf(" (from sync)");
742 printf("\n");
743 }
744 RB_REMOVE(pf_state_tree_lan_ext, &kif->pfik_lan_ext, state);
745 RB_REMOVE(pf_state_tree_ext_gwy, &kif->pfik_ext_gwy, state);
746 return (-1);
747 }
748 TAILQ_INSERT_HEAD(&state_updates, state, u.s.entry_updates);
749
478 pf_status.fcounters[FCNT_STATE_INSERT]++;
479 pf_status.states++;
750 pf_status.fcounters[FCNT_STATE_INSERT]++;
751 pf_status.states++;
752 pfi_attach_state(kif);
480#if NPFSYNC
481 pfsync_insert_state(state);
482#endif
483 return (0);
484}
485
486void
487pf_purge_timeout(void *arg)

--- 6 unchanged lines hidden (view full) ---

494 int s;
495
496#ifdef __FreeBSD__
497 PF_LOCK();
498#endif
499 s = splsoftnet();
500 pf_purge_expired_states();
501 pf_purge_expired_fragments();
753#if NPFSYNC
754 pfsync_insert_state(state);
755#endif
756 return (0);
757}
758
759void
760pf_purge_timeout(void *arg)

--- 6 unchanged lines hidden (view full) ---

767 int s;
768
769#ifdef __FreeBSD__
770 PF_LOCK();
771#endif
772 s = splsoftnet();
773 pf_purge_expired_states();
774 pf_purge_expired_fragments();
775 pf_purge_expired_src_nodes();
502 splx(s);
503#ifdef __FreeBSD__
504 PF_UNLOCK();
505#endif
506
507#ifdef __FreeBSD__
508 callout_reset(to, pf_default_rule.timeout[PFTM_INTERVAL] * hz,
509 pf_purge_timeout, to);

--- 47 unchanged lines hidden (view full) ---

557#else
558 return (time.tv_sec);
559#endif
560 }
561 return (state->expire + timeout);
562}
563
564void
776 splx(s);
777#ifdef __FreeBSD__
778 PF_UNLOCK();
779#endif
780
781#ifdef __FreeBSD__
782 callout_reset(to, pf_default_rule.timeout[PFTM_INTERVAL] * hz,
783 pf_purge_timeout, to);

--- 47 unchanged lines hidden (view full) ---

831#else
832 return (time.tv_sec);
833#endif
834 }
835 return (state->expire + timeout);
836}
837
838void
565pf_purge_expired_states(void)
839pf_purge_expired_src_nodes(void)
566{
840{
567 struct pf_tree_node *cur, *peer, *next;
568 struct pf_tree_node key;
841 struct pf_src_node *cur, *next;
569
842
570 for (cur = RB_MIN(pf_state_tree, &tree_ext_gwy); cur; cur = next) {
571 next = RB_NEXT(pf_state_tree, &tree_ext_gwy, cur);
843 for (cur = RB_MIN(pf_src_tree, &tree_src_tracking); cur; cur = next) {
844 next = RB_NEXT(pf_src_tree, &tree_src_tracking, cur);
572
573#ifdef __FreeBSD__
845
846#ifdef __FreeBSD__
574 if (pf_state_expires(cur->state) <= (u_int32_t)time_second) {
847 if (cur->states <= 0 && cur->expire <= time_second) {
575#else
848#else
576 if (pf_state_expires(cur->state) <= time.tv_sec) {
849 if (cur->states <= 0 && cur->expire <= time.tv_sec) {
577#endif
850#endif
578 if (cur->state->src.state == PF_TCPS_PROXY_DST)
579 pf_send_tcp(cur->state->rule.ptr,
580 cur->state->af,
581 &cur->state->ext.addr,
582 &cur->state->lan.addr,
583 cur->state->ext.port,
584 cur->state->lan.port,
585 cur->state->src.seqhi,
586 cur->state->src.seqlo + 1,
587 0,
588 TH_RST|TH_ACK, 0, 0);
589 RB_REMOVE(pf_state_tree, &tree_ext_gwy, cur);
851 if (cur->rule.ptr != NULL) {
852 cur->rule.ptr->src_nodes--;
853 if (cur->rule.ptr->states <= 0 &&
854 cur->rule.ptr->max_src_nodes <= 0)
855 pf_rm_rule(NULL, cur->rule.ptr);
856 }
857 RB_REMOVE(pf_src_tree, &tree_src_tracking, cur);
858 pf_status.scounters[SCNT_SRC_NODE_REMOVALS]++;
859 pf_status.src_nodes--;
860 pool_put(&pf_src_tree_pl, cur);
861 }
862 }
863}
590
864
591 /* Need this key's peer (in the other tree) */
592 key.state = cur->state;
593 key.proto = cur->state->proto;
594 key.af = cur->state->af;
595 PF_ACPY(&key.addr[0], &cur->state->lan.addr,
596 cur->state->af);
597 key.port[0] = cur->state->lan.port;
598 PF_ACPY(&key.addr[1], &cur->state->ext.addr,
599 cur->state->af);
600 key.port[1] = cur->state->ext.port;
865void
866pf_src_tree_remove_state(struct pf_state *s)
867{
868 u_int32_t timeout;
601
869
602 peer = RB_FIND(pf_state_tree, &tree_lan_ext, &key);
870 if (s->src_node != NULL) {
871 if (--s->src_node->states <= 0) {
872 timeout = s->rule.ptr->timeout[PFTM_SRC_NODE];
873 if (!timeout)
874 timeout =
875 pf_default_rule.timeout[PFTM_SRC_NODE];
603#ifdef __FreeBSD__
876#ifdef __FreeBSD__
604 KASSERT((peer), ("peer null :%s", __FUNCTION__));
605 KASSERT((peer->state == cur->state),
606 ("peer->state != cur->state: %s", __FUNCTION__));
877 s->src_node->expire = time_second + timeout;
607#else
878#else
608 KASSERT(peer);
609 KASSERT(peer->state == cur->state);
879 s->src_node->expire = time.tv_sec + timeout;
610#endif
880#endif
611 RB_REMOVE(pf_state_tree, &tree_lan_ext, peer);
881 }
882 }
883 if (s->nat_src_node != s->src_node && s->nat_src_node != NULL) {
884 if (--s->nat_src_node->states <= 0) {
885 timeout = s->rule.ptr->timeout[PFTM_SRC_NODE];
886 if (!timeout)
887 timeout =
888 pf_default_rule.timeout[PFTM_SRC_NODE];
889#ifdef __FreeBSD__
890 s->nat_src_node->expire = time_second + timeout;
891#else
892 s->nat_src_node->expire = time.tv_sec + timeout;
893#endif
894 }
895 }
896 s->src_node = s->nat_src_node = NULL;
897}
612
898
899void
900pf_purge_expired_states(void)
901{
902 struct pf_state *cur, *next;
903
904 for (cur = RB_MIN(pf_state_tree_id, &tree_id);
905 cur; cur = next) {
906 next = RB_NEXT(pf_state_tree_id, &tree_id, cur);
907
908#ifdef __FreeBSD__
909 if (pf_state_expires(cur) <= time_second) {
910#else
911 if (pf_state_expires(cur) <= time.tv_sec) {
912#endif
913 if (cur->src.state == PF_TCPS_PROXY_DST)
914 pf_send_tcp(cur->rule.ptr, cur->af,
915 &cur->ext.addr, &cur->lan.addr,
916 cur->ext.port, cur->lan.port,
917 cur->src.seqhi, cur->src.seqlo + 1, 0,
918 TH_RST|TH_ACK, 0, 0);
919 RB_REMOVE(pf_state_tree_ext_gwy,
920 &cur->u.s.kif->pfik_ext_gwy, cur);
921 RB_REMOVE(pf_state_tree_lan_ext,
922 &cur->u.s.kif->pfik_lan_ext, cur);
923 RB_REMOVE(pf_state_tree_id, &tree_id, cur);
613#if NPFSYNC
924#if NPFSYNC
614 pfsync_delete_state(cur->state);
925 pfsync_delete_state(cur);
615#endif
926#endif
616 if (--cur->state->rule.ptr->states <= 0)
617 pf_rm_rule(NULL, cur->state->rule.ptr);
618 if (cur->state->nat_rule.ptr != NULL)
619 if (--cur->state->nat_rule.ptr->states <= 0)
620 pf_rm_rule(NULL,
621 cur->state->nat_rule.ptr);
622 if (cur->state->anchor.ptr != NULL)
623 if (--cur->state->anchor.ptr->states <= 0)
624 pf_rm_rule(NULL,
625 cur->state->anchor.ptr);
626 pf_normalize_tcp_cleanup(cur->state);
627 pool_put(&pf_state_pl, cur->state);
628 pool_put(&pf_tree_pl, cur);
629 pool_put(&pf_tree_pl, peer);
927 pf_src_tree_remove_state(cur);
928 if (--cur->rule.ptr->states <= 0 &&
929 cur->rule.ptr->src_nodes <= 0)
930 pf_rm_rule(NULL, cur->rule.ptr);
931 if (cur->nat_rule.ptr != NULL)
932 if (--cur->nat_rule.ptr->states <= 0 &&
933 cur->nat_rule.ptr->src_nodes <= 0)
934 pf_rm_rule(NULL, cur->nat_rule.ptr);
935 if (cur->anchor.ptr != NULL)
936 if (--cur->anchor.ptr->states <= 0)
937 pf_rm_rule(NULL, cur->anchor.ptr);
938 pf_normalize_tcp_cleanup(cur);
939 pfi_detach_state(cur->u.s.kif);
940 TAILQ_REMOVE(&state_updates, cur, u.s.entry_updates);
941 pool_put(&pf_state_pl, cur);
630 pf_status.fcounters[FCNT_STATE_REMOVALS]++;
631 pf_status.states--;
632 }
633 }
634}
635
636int
637pf_tbladdr_setup(struct pf_ruleset *rs, struct pf_addr_wrap *aw)

--- 23 unchanged lines hidden (view full) ---

661 return;
662 if (!(kt->pfrkt_flags & PFR_TFLAG_ACTIVE) && kt->pfrkt_root != NULL)
663 kt = kt->pfrkt_root;
664 aw->p.tbl = NULL;
665 aw->p.tblcnt = (kt->pfrkt_flags & PFR_TFLAG_ACTIVE) ?
666 kt->pfrkt_cnt : -1;
667}
668
942 pf_status.fcounters[FCNT_STATE_REMOVALS]++;
943 pf_status.states--;
944 }
945 }
946}
947
948int
949pf_tbladdr_setup(struct pf_ruleset *rs, struct pf_addr_wrap *aw)

--- 23 unchanged lines hidden (view full) ---

973 return;
974 if (!(kt->pfrkt_flags & PFR_TFLAG_ACTIVE) && kt->pfrkt_root != NULL)
975 kt = kt->pfrkt_root;
976 aw->p.tbl = NULL;
977 aw->p.tblcnt = (kt->pfrkt_flags & PFR_TFLAG_ACTIVE) ?
978 kt->pfrkt_cnt : -1;
979}
980
669int
670pf_dynaddr_setup(struct pf_addr_wrap *aw, sa_family_t af)
671{
672 if (aw->type != PF_ADDR_DYNIFTL)
673 return (0);
674 aw->p.dyn = pool_get(&pf_addr_pl, PR_NOWAIT);
675 if (aw->p.dyn == NULL)
676 return (1);
677 bcopy(aw->v.ifname, aw->p.dyn->ifname, sizeof(aw->p.dyn->ifname));
678 aw->p.dyn->ifp = ifunit(aw->p.dyn->ifname);
679 if (aw->p.dyn->ifp == NULL) {
680 pool_put(&pf_addr_pl, aw->p.dyn);
681 aw->p.dyn = NULL;
682 return (1);
683 }
684 aw->p.dyn->addr = &aw->v.a.addr;
685 aw->p.dyn->af = af;
686 aw->p.dyn->undefined = 1;
687#ifndef __FreeBSD__
688 aw->p.dyn->hook_cookie = hook_establish(
689 aw->p.dyn->ifp->if_addrhooks, 1,
690 pf_dynaddr_update, aw->p.dyn);
691 if (aw->p.dyn->hook_cookie == NULL) {
692 pool_put(&pf_addr_pl, aw->p.dyn);
693 aw->p.dyn = NULL;
694 return (1);
695 }
696#else
697 PF_UNLOCK();
698 aw->p.dyn->hook_cookie = EVENTHANDLER_REGISTER(ifaddr_event,
699 pf_dynaddr_update_event, aw->p.dyn, EVENTHANDLER_PRI_ANY);
700 PF_LOCK();
701 if (aw->p.dyn->hook_cookie == NULL) {
702 pool_put(&pf_addr_pl, aw->p.dyn);
703 aw->p.dyn = NULL;
704 return (1);
705 }
706#endif
707 pf_dynaddr_update(aw->p.dyn);
708 return (0);
709}
710
711#ifdef __FreeBSD__
712void
981void
713pf_dynaddr_update_event(void *arg, struct ifnet *ifp)
714{
715 PF_LOCK();
716 pf_dynaddr_update(arg);
717 PF_UNLOCK();
718}
719#endif
720
721void
722pf_dynaddr_update(void *p)
723{
724 struct pf_addr_dyn *ad = (struct pf_addr_dyn *)p;
725 struct ifaddr *ia;
726 int s, changed = 0;
727
728 if (ad == NULL || ad->ifp == NULL)
729 panic("pf_dynaddr_update");
730 s = splsoftnet();
731 TAILQ_FOREACH(ia, &ad->ifp->if_addrlist, ifa_list)
732 if (ia->ifa_addr != NULL &&
733 ia->ifa_addr->sa_family == ad->af) {
734 if (ad->af == AF_INET) {
735 struct in_addr *a, *b;
736
737 a = &ad->addr->v4;
738 b = &((struct sockaddr_in *)ia->ifa_addr)
739 ->sin_addr;
740 if (ad->undefined ||
741 memcmp(a, b, sizeof(*a))) {
742 bcopy(b, a, sizeof(*a));
743 changed = 1;
744 }
745 } else if (ad->af == AF_INET6) {
746 struct in6_addr *a, *b;
747
748 a = &ad->addr->v6;
749 b = &((struct sockaddr_in6 *)ia->ifa_addr)
750 ->sin6_addr;
751 if (ad->undefined ||
752 memcmp(a, b, sizeof(*a))) {
753 bcopy(b, a, sizeof(*a));
754 changed = 1;
755 }
756 }
757 if (changed)
758 ad->undefined = 0;
759 break;
760 }
761 if (ia == NULL)
762 ad->undefined = 1;
763 splx(s);
764}
765
766void
767pf_dynaddr_remove(struct pf_addr_wrap *aw)
768{
769 if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL)
770 return;
771#ifndef __FreeBSD__
772 hook_disestablish(aw->p.dyn->ifp->if_addrhooks,
773 aw->p.dyn->hook_cookie);
774#else
775 PF_UNLOCK();
776 EVENTHANDLER_DEREGISTER(ifaddr_event, aw->p.dyn->hook_cookie);
777 PF_LOCK();
778#endif
779 pool_put(&pf_addr_pl, aw->p.dyn);
780 aw->p.dyn = NULL;
781}
782
783void
784pf_dynaddr_copyout(struct pf_addr_wrap *aw)
785{
786 if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL)
787 return;
788 bcopy(aw->p.dyn->ifname, aw->v.ifname, sizeof(aw->v.ifname));
789 aw->p.dyn = (struct pf_addr_dyn *)1;
790}
791
792void
793pf_print_host(struct pf_addr *addr, u_int16_t p, sa_family_t af)
794{
795 switch (af) {
796#ifdef INET
797 case AF_INET: {
798 u_int32_t a = ntohl(addr->addr32[0]);
799 printf("%u.%u.%u.%u", (a>>24)&255, (a>>16)&255,
800 (a>>8)&255, a&255);

--- 128 unchanged lines hidden (view full) ---

929 int i;
930
931 cur = TAILQ_FIRST(rules);
932 prev = cur;
933 for (i = 0; i < PF_SKIP_COUNT; ++i)
934 head[i] = cur;
935 while (cur != NULL) {
936
982pf_print_host(struct pf_addr *addr, u_int16_t p, sa_family_t af)
983{
984 switch (af) {
985#ifdef INET
986 case AF_INET: {
987 u_int32_t a = ntohl(addr->addr32[0]);
988 printf("%u.%u.%u.%u", (a>>24)&255, (a>>16)&255,
989 (a>>8)&255, a&255);

--- 128 unchanged lines hidden (view full) ---

1118 int i;
1119
1120 cur = TAILQ_FIRST(rules);
1121 prev = cur;
1122 for (i = 0; i < PF_SKIP_COUNT; ++i)
1123 head[i] = cur;
1124 while (cur != NULL) {
1125
937 if (cur->ifp != prev->ifp || cur->ifnot != prev->ifnot)
1126 if (cur->kif != prev->kif || cur->ifnot != prev->ifnot)
938 PF_SET_SKIP_STEPS(PF_SKIP_IFP);
939 if (cur->direction != prev->direction)
940 PF_SET_SKIP_STEPS(PF_SKIP_DIR);
941 if (cur->af != prev->af)
942 PF_SET_SKIP_STEPS(PF_SKIP_AF);
943 if (cur->proto != prev->proto)
944 PF_SET_SKIP_STEPS(PF_SKIP_PROTO);
945 if (cur->src.not != prev->src.not ||

--- 26 unchanged lines hidden (view full) ---

972 switch (aw1->type) {
973 case PF_ADDR_ADDRMASK:
974 if (PF_ANEQ(&aw1->v.a.addr, &aw2->v.a.addr, 0))
975 return (1);
976 if (PF_ANEQ(&aw1->v.a.mask, &aw2->v.a.mask, 0))
977 return (1);
978 return (0);
979 case PF_ADDR_DYNIFTL:
1127 PF_SET_SKIP_STEPS(PF_SKIP_IFP);
1128 if (cur->direction != prev->direction)
1129 PF_SET_SKIP_STEPS(PF_SKIP_DIR);
1130 if (cur->af != prev->af)
1131 PF_SET_SKIP_STEPS(PF_SKIP_AF);
1132 if (cur->proto != prev->proto)
1133 PF_SET_SKIP_STEPS(PF_SKIP_PROTO);
1134 if (cur->src.not != prev->src.not ||

--- 26 unchanged lines hidden (view full) ---

1161 switch (aw1->type) {
1162 case PF_ADDR_ADDRMASK:
1163 if (PF_ANEQ(&aw1->v.a.addr, &aw2->v.a.addr, 0))
1164 return (1);
1165 if (PF_ANEQ(&aw1->v.a.mask, &aw2->v.a.mask, 0))
1166 return (1);
1167 return (0);
1168 case PF_ADDR_DYNIFTL:
980 if (aw1->p.dyn->ifp != aw2->p.dyn->ifp)
981 return (1);
982 if (PF_ANEQ(&aw1->v.a.mask, &aw2->v.a.mask, 0))
983 return (1);
984 return (0);
1169 return (aw1->p.dyn->pfid_kt != aw2->p.dyn->pfid_kt);
985 case PF_ADDR_NOROUTE:
986 return (0);
987 case PF_ADDR_TABLE:
988 return (aw1->p.tbl != aw2->p.tbl);
989 default:
990 printf("invalid address type: %d\n", aw1->type);
991 return (1);
992 }
993}
994
995void
1170 case PF_ADDR_NOROUTE:
1171 return (0);
1172 case PF_ADDR_TABLE:
1173 return (aw1->p.tbl != aw2->p.tbl);
1174 default:
1175 printf("invalid address type: %d\n", aw1->type);
1176 return (1);
1177 }
1178}
1179
1180void
996pf_rule_set_qid(struct pf_rulequeue *rules)
997{
998 struct pf_rule *rule;
999
1000 TAILQ_FOREACH(rule, rules, entries)
1001 if (rule->qname[0] != 0) {
1002 rule->qid = pf_qname_to_qid(rule->qname);
1003 if (rule->pqname[0] != 0)
1004 rule->pqid = pf_qname_to_qid(rule->pqname);
1005 else
1006 rule->pqid = rule->qid;
1007 }
1008}
1009
1010u_int32_t
1011pf_qname_to_qid(char *qname)
1012{
1013 struct pf_altq *altq;
1014
1015 TAILQ_FOREACH(altq, pf_altqs_active, entries)
1016 if (!strcmp(altq->qname, qname))
1017 return (altq->qid);
1018
1019 return (0);
1020}
1021
1022void
1023pf_update_anchor_rules()
1024{
1025 struct pf_rule *rule;
1026 int i;
1027
1028 for (i = 0; i < PF_RULESET_MAX; ++i)
1029 TAILQ_FOREACH(rule, pf_main_ruleset.rules[i].active.ptr,
1030 entries)

--- 196 unchanged lines hidden (view full) ---

1227 struct ip *h = NULL; /* make the compiler happy */
1228#endif /* INET */
1229#ifdef INET6
1230 struct ip6_hdr *h6 = NULL; /* make the compiler happy */
1231#endif /* INET6 */
1232 struct tcphdr *th = NULL; /* make the compiler happy */
1233#ifdef __FreeBSD__
1234 struct ip *ip;
1181pf_update_anchor_rules()
1182{
1183 struct pf_rule *rule;
1184 int i;
1185
1186 for (i = 0; i < PF_RULESET_MAX; ++i)
1187 TAILQ_FOREACH(rule, pf_main_ruleset.rules[i].active.ptr,
1188 entries)

--- 196 unchanged lines hidden (view full) ---

1385 struct ip *h = NULL; /* make the compiler happy */
1386#endif /* INET */
1387#ifdef INET6
1388 struct ip6_hdr *h6 = NULL; /* make the compiler happy */
1389#endif /* INET6 */
1390 struct tcphdr *th = NULL; /* make the compiler happy */
1391#ifdef __FreeBSD__
1392 struct ip *ip;
1235#if (__FreeBSD_version < 501114)
1236 struct route ro;
1237#endif
1393#endif
1238#endif
1239 char *opt;
1240
1241 /* maximum segment size tcp option */
1242 tlen = sizeof(struct tcphdr);
1243 if (mss)
1244 tlen += 4;
1245
1246 switch (af) {

--- 90 unchanged lines hidden (view full) ---

1337 /* TCP checksum */
1338 th->th_sum = in_cksum(m, len);
1339
1340 /* Finish the IP header */
1341 h->ip_v = 4;
1342 h->ip_hl = sizeof(*h) >> 2;
1343 h->ip_tos = IPTOS_LOWDELAY;
1344#ifdef __FreeBSD__
1394 char *opt;
1395
1396 /* maximum segment size tcp option */
1397 tlen = sizeof(struct tcphdr);
1398 if (mss)
1399 tlen += 4;
1400
1401 switch (af) {

--- 90 unchanged lines hidden (view full) ---

1492 /* TCP checksum */
1493 th->th_sum = in_cksum(m, len);
1494
1495 /* Finish the IP header */
1496 h->ip_v = 4;
1497 h->ip_hl = sizeof(*h) >> 2;
1498 h->ip_tos = IPTOS_LOWDELAY;
1499#ifdef __FreeBSD__
1345 h->ip_off = htons(path_mtu_discovery ? IP_DF : 0);
1500 h->ip_off = path_mtu_discovery ? IP_DF : 0;
1501 h->ip_len = len;
1346#else
1347 h->ip_off = htons(ip_mtudisc ? IP_DF : 0);
1502#else
1503 h->ip_off = htons(ip_mtudisc ? IP_DF : 0);
1348#endif
1349 h->ip_len = htons(len);
1504 h->ip_len = htons(len);
1505#endif
1350 h->ip_ttl = ttl ? ttl : ip_defttl;
1351 h->ip_sum = 0;
1352#ifdef __FreeBSD__
1353 ip = mtod(m, struct ip *);
1506 h->ip_ttl = ttl ? ttl : ip_defttl;
1507 h->ip_sum = 0;
1508#ifdef __FreeBSD__
1509 ip = mtod(m, struct ip *);
1354 /*
1355 * XXX
1356 * OpenBSD changed ip_len/ip_off byte ordering!
1357 * Because FreeBSD assumes host byte ordering we need to
1358 * change here.
1359 */
1360 NTOHS(ip->ip_len);
1361 NTOHS(ip->ip_off);
1362#if (__FreeBSD_version < 501114)
1363 bzero(&ro, sizeof(ro));
1364 ip_rtaddr(ip->ip_dst, &ro);
1365 PF_UNLOCK();
1510 PF_UNLOCK();
1366 ip_output(m, (void *)NULL, &ro, 0, (void *)NULL,
1367 (void *)NULL);
1368 PF_LOCK();
1369 if(ro.ro_rt) {
1370 RTFREE(ro.ro_rt);
1371 }
1372#else /* __FreeBSD_version >= 501114 */
1373 PF_UNLOCK();
1374 ip_output(m, (void *)NULL, (void *)NULL, 0, (void *)NULL,
1375 (void *)NULL);
1376 PF_LOCK();
1511 ip_output(m, (void *)NULL, (void *)NULL, 0, (void *)NULL,
1512 (void *)NULL);
1513 PF_LOCK();
1377#endif
1378#else /* ! __FreeBSD__ */
1379 ip_output(m, (void *)NULL, (void *)NULL, 0, (void *)NULL,
1380 (void *)NULL);
1381#endif
1382 break;
1383#endif /* INET */
1384#ifdef INET6
1385 case AF_INET6:

--- 61 unchanged lines hidden (view full) ---

1447 case AF_INET:
1448#ifdef __FreeBSD__
1449 /* icmp_error() expects host byte ordering */
1450 ip = mtod(m0, struct ip *);
1451 NTOHS(ip->ip_len);
1452 NTOHS(ip->ip_off);
1453 PF_UNLOCK();
1454#endif
1514#else /* ! __FreeBSD__ */
1515 ip_output(m, (void *)NULL, (void *)NULL, 0, (void *)NULL,
1516 (void *)NULL);
1517#endif
1518 break;
1519#endif /* INET */
1520#ifdef INET6
1521 case AF_INET6:

--- 61 unchanged lines hidden (view full) ---

1583 case AF_INET:
1584#ifdef __FreeBSD__
1585 /* icmp_error() expects host byte ordering */
1586 ip = mtod(m0, struct ip *);
1587 NTOHS(ip->ip_len);
1588 NTOHS(ip->ip_off);
1589 PF_UNLOCK();
1590#endif
1455 icmp_error(m0, type, code, 0, NULL);
1591 icmp_error(m0, type, code, 0, (void *)NULL);
1456#ifdef __FreeBSD__
1457 PF_LOCK();
1458#endif
1459 break;
1460#endif /* INET */
1461#ifdef INET6
1462 case AF_INET6:
1463#ifdef __FreeBSD__

--- 112 unchanged lines hidden (view full) ---

1576
1577 if ((mtag = m_tag_find(m, PACKET_TAG_PF_TAG, NULL)) != NULL)
1578 return ((struct pf_tag *)(mtag + 1));
1579 else
1580 return (NULL);
1581}
1582
1583int
1592#ifdef __FreeBSD__
1593 PF_LOCK();
1594#endif
1595 break;
1596#endif /* INET */
1597#ifdef INET6
1598 case AF_INET6:
1599#ifdef __FreeBSD__

--- 112 unchanged lines hidden (view full) ---

1712
1713 if ((mtag = m_tag_find(m, PACKET_TAG_PF_TAG, NULL)) != NULL)
1714 return ((struct pf_tag *)(mtag + 1));
1715 else
1716 return (NULL);
1717}
1718
1719int
1584pf_match_tag(struct mbuf *m, struct pf_rule *r, struct pf_rule *nat,
1585 struct pf_rule *rdr, struct pf_tag *pftag, int *tag)
1720pf_match_tag(struct mbuf *m, struct pf_rule *r, struct pf_rule *nat_rule,
1721 struct pf_tag *pftag, int *tag)
1586{
1587 if (*tag == -1) { /* find mbuf tag */
1588 pftag = pf_get_tag(m);
1589 if (pftag != NULL)
1590 *tag = pftag->tag;
1591 else
1592 *tag = 0;
1722{
1723 if (*tag == -1) { /* find mbuf tag */
1724 pftag = pf_get_tag(m);
1725 if (pftag != NULL)
1726 *tag = pftag->tag;
1727 else
1728 *tag = 0;
1593 if (nat != NULL && nat->tag)
1594 *tag = nat->tag;
1595 if (rdr != NULL && rdr->tag)
1596 *tag = rdr->tag;
1729 if (nat_rule != NULL && nat_rule->tag)
1730 *tag = nat_rule->tag;
1597 }
1598
1599 return ((!r->match_tag_not && r->match_tag == *tag) ||
1600 (r->match_tag_not && r->match_tag != *tag));
1601}
1602
1603int
1604pf_tag_packet(struct mbuf *m, struct pf_tag *pftag, int tag)

--- 67 unchanged lines hidden (view full) ---

1672 ((rmask->addr32[2] ^ 0xffffffff ) & saddr->addr32[2]);
1673 naddr->addr32[3] = (raddr->addr32[3] & rmask->addr32[3]) |
1674 ((rmask->addr32[3] ^ 0xffffffff ) & saddr->addr32[3]);
1675 break;
1676 }
1677}
1678
1679void
1731 }
1732
1733 return ((!r->match_tag_not && r->match_tag == *tag) ||
1734 (r->match_tag_not && r->match_tag != *tag));
1735}
1736
1737int
1738pf_tag_packet(struct mbuf *m, struct pf_tag *pftag, int tag)

--- 67 unchanged lines hidden (view full) ---

1806 ((rmask->addr32[2] ^ 0xffffffff ) & saddr->addr32[2]);
1807 naddr->addr32[3] = (raddr->addr32[3] & rmask->addr32[3]) |
1808 ((rmask->addr32[3] ^ 0xffffffff ) & saddr->addr32[3]);
1809 break;
1810 }
1811}
1812
1813void
1680pf_addr_inc(struct pf_addr *addr, u_int8_t af)
1814pf_addr_inc(struct pf_addr *addr, sa_family_t af)
1681{
1682 switch (af) {
1683#ifdef INET
1684 case AF_INET:
1685 addr->addr32[0] = htonl(ntohl(addr->addr32[0]) + 1);
1686 break;
1687#endif /* INET */
1688 case AF_INET6:

--- 72 unchanged lines hidden (view full) ---

1761 mix(a, b, c);
1762 hash->addr32[3] = c;
1763 break;
1764#endif /* INET6 */
1765 }
1766}
1767
1768int
1815{
1816 switch (af) {
1817#ifdef INET
1818 case AF_INET:
1819 addr->addr32[0] = htonl(ntohl(addr->addr32[0]) + 1);
1820 break;
1821#endif /* INET */
1822 case AF_INET6:

--- 72 unchanged lines hidden (view full) ---

1895 mix(a, b, c);
1896 hash->addr32[3] = c;
1897 break;
1898#endif /* INET6 */
1899 }
1900}
1901
1902int
1769pf_map_addr(u_int8_t af, struct pf_pool *rpool, struct pf_addr *saddr,
1770 struct pf_addr *naddr, struct pf_addr *init_addr)
1903pf_map_addr(sa_family_t af, struct pf_rule *r, struct pf_addr *saddr,
1904 struct pf_addr *naddr, struct pf_addr *init_addr, struct pf_src_node **sn)
1771{
1772 unsigned char hash[16];
1905{
1906 unsigned char hash[16];
1773 struct pf_addr *raddr;
1774 struct pf_addr *rmask;
1907 struct pf_pool *rpool = &r->rpool;
1908 struct pf_addr *raddr = &rpool->cur->addr.v.a.addr;
1909 struct pf_addr *rmask = &rpool->cur->addr.v.a.mask;
1775 struct pf_pooladdr *acur = rpool->cur;
1910 struct pf_pooladdr *acur = rpool->cur;
1911 struct pf_src_node k;
1776
1912
1913 if (*sn == NULL && r->rpool.opts & PF_POOL_STICKYADDR &&
1914 (r->rpool.opts & PF_POOL_TYPEMASK) != PF_POOL_NONE) {
1915 k.af = af;
1916 PF_ACPY(&k.addr, saddr, af);
1917 if (r->rule_flag & PFRULE_RULESRCTRACK ||
1918 r->rpool.opts & PF_POOL_STICKYADDR)
1919 k.rule.ptr = r;
1920 else
1921 k.rule.ptr = NULL;
1922 pf_status.scounters[SCNT_SRC_NODE_SEARCH]++;
1923 *sn = RB_FIND(pf_src_tree, &tree_src_tracking, &k);
1924 if (*sn != NULL && !PF_AZERO(&(*sn)->raddr, af)) {
1925 PF_ACPY(naddr, &(*sn)->raddr, af);
1926 if (pf_status.debug >= PF_DEBUG_MISC) {
1927 printf("pf_map_addr: src tracking maps ");
1928 pf_print_host(&k.addr, 0, af);
1929 printf(" to ");
1930 pf_print_host(naddr, 0, af);
1931 printf("\n");
1932 }
1933 return (0);
1934 }
1935 }
1936
1777 if (rpool->cur->addr.type == PF_ADDR_NOROUTE)
1778 return (1);
1937 if (rpool->cur->addr.type == PF_ADDR_NOROUTE)
1938 return (1);
1779 if (rpool->cur->addr.type == PF_ADDR_DYNIFTL &&
1780 rpool->cur->addr.p.dyn->undefined)
1781 return (1);
1782 if (rpool->cur->addr.type == PF_ADDR_TABLE) {
1939 if (rpool->cur->addr.type == PF_ADDR_DYNIFTL) {
1940 if (af == AF_INET) {
1941 if (rpool->cur->addr.p.dyn->pfid_acnt4 < 1 &&
1942 (rpool->opts & PF_POOL_TYPEMASK) !=
1943 PF_POOL_ROUNDROBIN)
1944 return (1);
1945 raddr = &rpool->cur->addr.p.dyn->pfid_addr4;
1946 rmask = &rpool->cur->addr.p.dyn->pfid_mask4;
1947 } else {
1948 if (rpool->cur->addr.p.dyn->pfid_acnt6 < 1 &&
1949 (rpool->opts & PF_POOL_TYPEMASK) !=
1950 PF_POOL_ROUNDROBIN)
1951 return (1);
1952 raddr = &rpool->cur->addr.p.dyn->pfid_addr6;
1953 rmask = &rpool->cur->addr.p.dyn->pfid_mask6;
1954 }
1955 } else if (rpool->cur->addr.type == PF_ADDR_TABLE) {
1783 if ((rpool->opts & PF_POOL_TYPEMASK) != PF_POOL_ROUNDROBIN)
1784 return (1); /* unsupported */
1785 } else {
1786 raddr = &rpool->cur->addr.v.a.addr;
1787 rmask = &rpool->cur->addr.v.a.mask;
1788 }
1789
1790 switch (rpool->opts & PF_POOL_TYPEMASK) {

--- 43 unchanged lines hidden (view full) ---

1834 PF_POOLMASK(naddr, raddr, rmask, (struct pf_addr *)&hash, af);
1835 break;
1836 case PF_POOL_ROUNDROBIN:
1837 if (rpool->cur->addr.type == PF_ADDR_TABLE) {
1838 if (!pfr_pool_get(rpool->cur->addr.p.tbl,
1839 &rpool->tblidx, &rpool->counter,
1840 &raddr, &rmask, af))
1841 goto get_addr;
1956 if ((rpool->opts & PF_POOL_TYPEMASK) != PF_POOL_ROUNDROBIN)
1957 return (1); /* unsupported */
1958 } else {
1959 raddr = &rpool->cur->addr.v.a.addr;
1960 rmask = &rpool->cur->addr.v.a.mask;
1961 }
1962
1963 switch (rpool->opts & PF_POOL_TYPEMASK) {

--- 43 unchanged lines hidden (view full) ---

2007 PF_POOLMASK(naddr, raddr, rmask, (struct pf_addr *)&hash, af);
2008 break;
2009 case PF_POOL_ROUNDROBIN:
2010 if (rpool->cur->addr.type == PF_ADDR_TABLE) {
2011 if (!pfr_pool_get(rpool->cur->addr.p.tbl,
2012 &rpool->tblidx, &rpool->counter,
2013 &raddr, &rmask, af))
2014 goto get_addr;
2015 } else if (rpool->cur->addr.type == PF_ADDR_DYNIFTL) {
2016 if (!pfr_pool_get(rpool->cur->addr.p.dyn->pfid_kt,
2017 &rpool->tblidx, &rpool->counter,
2018 &raddr, &rmask, af))
2019 goto get_addr;
1842 } else if (pf_match_addr(0, raddr, rmask, &rpool->counter, af))
1843 goto get_addr;
1844
1845 try_next:
1846 if ((rpool->cur = TAILQ_NEXT(rpool->cur, entries)) == NULL)
1847 rpool->cur = TAILQ_FIRST(&rpool->list);
1848 if (rpool->cur->addr.type == PF_ADDR_TABLE) {
1849 rpool->tblidx = -1;
1850 if (pfr_pool_get(rpool->cur->addr.p.tbl,
1851 &rpool->tblidx, &rpool->counter,
1852 &raddr, &rmask, af)) {
2020 } else if (pf_match_addr(0, raddr, rmask, &rpool->counter, af))
2021 goto get_addr;
2022
2023 try_next:
2024 if ((rpool->cur = TAILQ_NEXT(rpool->cur, entries)) == NULL)
2025 rpool->cur = TAILQ_FIRST(&rpool->list);
2026 if (rpool->cur->addr.type == PF_ADDR_TABLE) {
2027 rpool->tblidx = -1;
2028 if (pfr_pool_get(rpool->cur->addr.p.tbl,
2029 &rpool->tblidx, &rpool->counter,
2030 &raddr, &rmask, af)) {
1853 /* table contain no address of type 'af' */
2031 /* table contains no address of type 'af' */
1854 if (rpool->cur != acur)
1855 goto try_next;
1856 return (1);
1857 }
2032 if (rpool->cur != acur)
2033 goto try_next;
2034 return (1);
2035 }
2036 } else if (rpool->cur->addr.type == PF_ADDR_DYNIFTL) {
2037 rpool->tblidx = -1;
2038 if (pfr_pool_get(rpool->cur->addr.p.dyn->pfid_kt,
2039 &rpool->tblidx, &rpool->counter,
2040 &raddr, &rmask, af)) {
2041 /* table contains no address of type 'af' */
2042 if (rpool->cur != acur)
2043 goto try_next;
2044 return (1);
2045 }
1858 } else {
1859 raddr = &rpool->cur->addr.v.a.addr;
1860 rmask = &rpool->cur->addr.v.a.mask;
1861 PF_ACPY(&rpool->counter, raddr, af);
1862 }
1863
1864 get_addr:
1865 PF_ACPY(naddr, &rpool->counter, af);
1866 PF_AINC(&rpool->counter, af);
1867 break;
1868 }
2046 } else {
2047 raddr = &rpool->cur->addr.v.a.addr;
2048 rmask = &rpool->cur->addr.v.a.mask;
2049 PF_ACPY(&rpool->counter, raddr, af);
2050 }
2051
2052 get_addr:
2053 PF_ACPY(naddr, &rpool->counter, af);
2054 PF_AINC(&rpool->counter, af);
2055 break;
2056 }
2057 if (*sn != NULL)
2058 PF_ACPY(&(*sn)->raddr, naddr, af);
1869
1870 if (pf_status.debug >= PF_DEBUG_MISC &&
1871 (rpool->opts & PF_POOL_TYPEMASK) != PF_POOL_NONE) {
2059
2060 if (pf_status.debug >= PF_DEBUG_MISC &&
2061 (rpool->opts & PF_POOL_TYPEMASK) != PF_POOL_NONE) {
1872 printf("pf_map_addr: selected address: ");
2062 printf("pf_map_addr: selected address ");
1873 pf_print_host(naddr, 0, af);
1874 printf("\n");
1875 }
1876
1877 return (0);
1878}
1879
1880int
2063 pf_print_host(naddr, 0, af);
2064 printf("\n");
2065 }
2066
2067 return (0);
2068}
2069
2070int
1881pf_get_sport(sa_family_t af, u_int8_t proto, struct pf_pool *rpool,
2071pf_get_sport(sa_family_t af, u_int8_t proto, struct pf_rule *r,
1882 struct pf_addr *saddr, struct pf_addr *daddr, u_int16_t dport,
2072 struct pf_addr *saddr, struct pf_addr *daddr, u_int16_t dport,
1883 struct pf_addr *naddr, u_int16_t *nport, u_int16_t low, u_int16_t high)
2073 struct pf_addr *naddr, u_int16_t *nport, u_int16_t low, u_int16_t high,
2074 struct pf_src_node **sn)
1884{
2075{
1885 struct pf_tree_node key;
2076 struct pf_state key;
1886 struct pf_addr init_addr;
1887 u_int16_t cut;
1888
1889 bzero(&init_addr, sizeof(init_addr));
2077 struct pf_addr init_addr;
2078 u_int16_t cut;
2079
2080 bzero(&init_addr, sizeof(init_addr));
1890 if (pf_map_addr(af, rpool, saddr, naddr, &init_addr))
2081 if (pf_map_addr(af, r, saddr, naddr, &init_addr, sn))
1891 return (1);
1892
1893 do {
1894 key.af = af;
1895 key.proto = proto;
2082 return (1);
2083
2084 do {
2085 key.af = af;
2086 key.proto = proto;
1896 PF_ACPY(&key.addr[0], daddr, key.af);
1897 PF_ACPY(&key.addr[1], naddr, key.af);
1898 key.port[0] = dport;
2087 PF_ACPY(&key.ext.addr, daddr, key.af);
2088 PF_ACPY(&key.gwy.addr, naddr, key.af);
2089 key.ext.port = dport;
1899
1900 /*
1901 * port search; start random, step;
1902 * similar 2 portloop in in_pcbbind
1903 */
1904 if (!(proto == IPPROTO_TCP || proto == IPPROTO_UDP)) {
2090
2091 /*
2092 * port search; start random, step;
2093 * similar 2 portloop in in_pcbbind
2094 */
2095 if (!(proto == IPPROTO_TCP || proto == IPPROTO_UDP)) {
1905 key.port[1] = 0;
1906 if (pf_find_state(&tree_ext_gwy, &key) == NULL)
2096 key.gwy.port = 0;
2097 if (pf_find_state_all(&key, PF_EXT_GWY, NULL) == NULL)
1907 return (0);
1908 } else if (low == 0 && high == 0) {
2098 return (0);
2099 } else if (low == 0 && high == 0) {
1909 key.port[1] = *nport;
1910 if (pf_find_state(&tree_ext_gwy, &key) == NULL) {
2100 key.gwy.port = *nport;
2101 if (pf_find_state_all(&key, PF_EXT_GWY, NULL) == NULL)
1911 return (0);
2102 return (0);
1912 }
1913 } else if (low == high) {
2103 } else if (low == high) {
1914 key.port[1] = htons(low);
1915 if (pf_find_state(&tree_ext_gwy, &key) == NULL) {
2104 key.gwy.port = htons(low);
2105 if (pf_find_state_all(&key, PF_EXT_GWY, NULL) == NULL) {
1916 *nport = htons(low);
1917 return (0);
1918 }
1919 } else {
1920 u_int16_t tmp;
1921
1922 if (low > high) {
1923 tmp = low;
1924 low = high;
1925 high = tmp;
1926 }
1927 /* low < high */
1928 cut = arc4random() % (1 + high - low) + low;
1929 /* low <= cut <= high */
1930 for (tmp = cut; tmp <= high; ++(tmp)) {
2106 *nport = htons(low);
2107 return (0);
2108 }
2109 } else {
2110 u_int16_t tmp;
2111
2112 if (low > high) {
2113 tmp = low;
2114 low = high;
2115 high = tmp;
2116 }
2117 /* low < high */
2118 cut = arc4random() % (1 + high - low) + low;
2119 /* low <= cut <= high */
2120 for (tmp = cut; tmp <= high; ++(tmp)) {
1931 key.port[1] = htons(tmp);
1932 if (pf_find_state(&tree_ext_gwy, &key) ==
2121 key.gwy.port = htons(tmp);
2122 if (pf_find_state_all(&key, PF_EXT_GWY, NULL) ==
1933 NULL) {
1934 *nport = htons(tmp);
1935 return (0);
1936 }
1937 }
1938 for (tmp = cut - 1; tmp >= low; --(tmp)) {
2123 NULL) {
2124 *nport = htons(tmp);
2125 return (0);
2126 }
2127 }
2128 for (tmp = cut - 1; tmp >= low; --(tmp)) {
1939 key.port[1] = htons(tmp);
1940 if (pf_find_state(&tree_ext_gwy, &key) ==
2129 key.gwy.port = htons(tmp);
2130 if (pf_find_state_all(&key, PF_EXT_GWY, NULL) ==
1941 NULL) {
1942 *nport = htons(tmp);
1943 return (0);
1944 }
1945 }
1946 }
1947
2131 NULL) {
2132 *nport = htons(tmp);
2133 return (0);
2134 }
2135 }
2136 }
2137
1948 switch (rpool->opts & PF_POOL_TYPEMASK) {
2138 switch (r->rpool.opts & PF_POOL_TYPEMASK) {
1949 case PF_POOL_RANDOM:
1950 case PF_POOL_ROUNDROBIN:
2139 case PF_POOL_RANDOM:
2140 case PF_POOL_ROUNDROBIN:
1951 if (pf_map_addr(af, rpool, saddr, naddr, &init_addr))
2141 if (pf_map_addr(af, r, saddr, naddr, &init_addr, sn))
1952 return (1);
1953 break;
1954 case PF_POOL_NONE:
1955 case PF_POOL_SRCHASH:
1956 case PF_POOL_BITMASK:
1957 default:
1958 return (1);
2142 return (1);
2143 break;
2144 case PF_POOL_NONE:
2145 case PF_POOL_SRCHASH:
2146 case PF_POOL_BITMASK:
2147 default:
2148 return (1);
1959 break;
1960 }
1961 } while (! PF_AEQ(&init_addr, naddr, af) );
1962
1963 return (1); /* none available */
1964}
1965
1966struct pf_rule *
1967pf_match_translation(struct pf_pdesc *pd, struct mbuf *m, int off,
2149 }
2150 } while (! PF_AEQ(&init_addr, naddr, af) );
2151
2152 return (1); /* none available */
2153}
2154
2155struct pf_rule *
2156pf_match_translation(struct pf_pdesc *pd, struct mbuf *m, int off,
1968 int direction, struct ifnet *ifp, struct pf_addr *saddr, u_int16_t sport,
2157 int direction, struct pfi_kif *kif, struct pf_addr *saddr, u_int16_t sport,
1969 struct pf_addr *daddr, u_int16_t dport, int rs_num)
1970{
1971 struct pf_rule *r, *rm = NULL, *anchorrule = NULL;
1972 struct pf_ruleset *ruleset = NULL;
1973
1974 r = TAILQ_FIRST(pf_main_ruleset.rules[rs_num].active.ptr);
1975 while (r && rm == NULL) {
1976 struct pf_rule_addr *src = NULL, *dst = NULL;

--- 4 unchanged lines hidden (view full) ---

1981 if (r->rpool.cur != NULL)
1982 xdst = &r->rpool.cur->addr;
1983 } else {
1984 src = &r->src;
1985 dst = &r->dst;
1986 }
1987
1988 r->evaluations++;
2158 struct pf_addr *daddr, u_int16_t dport, int rs_num)
2159{
2160 struct pf_rule *r, *rm = NULL, *anchorrule = NULL;
2161 struct pf_ruleset *ruleset = NULL;
2162
2163 r = TAILQ_FIRST(pf_main_ruleset.rules[rs_num].active.ptr);
2164 while (r && rm == NULL) {
2165 struct pf_rule_addr *src = NULL, *dst = NULL;

--- 4 unchanged lines hidden (view full) ---

2170 if (r->rpool.cur != NULL)
2171 xdst = &r->rpool.cur->addr;
2172 } else {
2173 src = &r->src;
2174 dst = &r->dst;
2175 }
2176
2177 r->evaluations++;
1989 if (r->ifp != NULL && ((r->ifp != ifp && !r->ifnot) ||
1990 (r->ifp == ifp && r->ifnot)))
2178 if (r->kif != NULL &&
2179 (r->kif != kif && r->kif != kif->pfik_parent) == !r->ifnot)
1991 r = r->skip[PF_SKIP_IFP].ptr;
1992 else if (r->direction && r->direction != direction)
1993 r = r->skip[PF_SKIP_DIR].ptr;
1994 else if (r->af && r->af != pd->af)
1995 r = r->skip[PF_SKIP_AF].ptr;
1996 else if (r->proto && r->proto != pd->proto)
1997 r = r->skip[PF_SKIP_PROTO].ptr;
1998 else if (PF_MISMATCHAW(&src->addr, saddr, pd->af, src->not))

--- 29 unchanged lines hidden (view full) ---

2028 if (rm != NULL && (rm->action == PF_NONAT ||
2029 rm->action == PF_NORDR || rm->action == PF_NOBINAT))
2030 return (NULL);
2031 return (rm);
2032}
2033
2034struct pf_rule *
2035pf_get_translation(struct pf_pdesc *pd, struct mbuf *m, int off, int direction,
2180 r = r->skip[PF_SKIP_IFP].ptr;
2181 else if (r->direction && r->direction != direction)
2182 r = r->skip[PF_SKIP_DIR].ptr;
2183 else if (r->af && r->af != pd->af)
2184 r = r->skip[PF_SKIP_AF].ptr;
2185 else if (r->proto && r->proto != pd->proto)
2186 r = r->skip[PF_SKIP_PROTO].ptr;
2187 else if (PF_MISMATCHAW(&src->addr, saddr, pd->af, src->not))

--- 29 unchanged lines hidden (view full) ---

2217 if (rm != NULL && (rm->action == PF_NONAT ||
2218 rm->action == PF_NORDR || rm->action == PF_NOBINAT))
2219 return (NULL);
2220 return (rm);
2221}
2222
2223struct pf_rule *
2224pf_get_translation(struct pf_pdesc *pd, struct mbuf *m, int off, int direction,
2036 struct ifnet *ifp,
2225 struct pfi_kif *kif, struct pf_src_node **sn,
2037 struct pf_addr *saddr, u_int16_t sport,
2038 struct pf_addr *daddr, u_int16_t dport,
2039 struct pf_addr *naddr, u_int16_t *nport)
2040{
2041 struct pf_rule *r = NULL;
2042
2043 if (direction == PF_OUT) {
2226 struct pf_addr *saddr, u_int16_t sport,
2227 struct pf_addr *daddr, u_int16_t dport,
2228 struct pf_addr *naddr, u_int16_t *nport)
2229{
2230 struct pf_rule *r = NULL;
2231
2232 if (direction == PF_OUT) {
2044 r = pf_match_translation(pd, m, off, direction, ifp, saddr,
2233 r = pf_match_translation(pd, m, off, direction, kif, saddr,
2045 sport, daddr, dport, PF_RULESET_BINAT);
2046 if (r == NULL)
2234 sport, daddr, dport, PF_RULESET_BINAT);
2235 if (r == NULL)
2047 r = pf_match_translation(pd, m, off, direction, ifp,
2236 r = pf_match_translation(pd, m, off, direction, kif,
2048 saddr, sport, daddr, dport, PF_RULESET_NAT);
2049 } else {
2237 saddr, sport, daddr, dport, PF_RULESET_NAT);
2238 } else {
2050 r = pf_match_translation(pd, m, off, direction, ifp, saddr,
2239 r = pf_match_translation(pd, m, off, direction, kif, saddr,
2051 sport, daddr, dport, PF_RULESET_RDR);
2052 if (r == NULL)
2240 sport, daddr, dport, PF_RULESET_RDR);
2241 if (r == NULL)
2053 r = pf_match_translation(pd, m, off, direction, ifp,
2242 r = pf_match_translation(pd, m, off, direction, kif,
2054 saddr, sport, daddr, dport, PF_RULESET_BINAT);
2055 }
2056
2057 if (r != NULL) {
2058 switch (r->action) {
2059 case PF_NONAT:
2060 case PF_NOBINAT:
2061 case PF_NORDR:
2062 return (NULL);
2243 saddr, sport, daddr, dport, PF_RULESET_BINAT);
2244 }
2245
2246 if (r != NULL) {
2247 switch (r->action) {
2248 case PF_NONAT:
2249 case PF_NOBINAT:
2250 case PF_NORDR:
2251 return (NULL);
2063 break;
2064 case PF_NAT:
2252 case PF_NAT:
2065 if (pf_get_sport(pd->af, pd->proto, &r->rpool, saddr,
2253 if (pf_get_sport(pd->af, pd->proto, r, saddr,
2066 daddr, dport, naddr, nport, r->rpool.proxy_port[0],
2254 daddr, dport, naddr, nport, r->rpool.proxy_port[0],
2067 r->rpool.proxy_port[1])) {
2255 r->rpool.proxy_port[1], sn)) {
2068 DPFPRINTF(PF_DEBUG_MISC,
2069 ("pf: NAT proxy port allocation "
2070 "(%u-%u) failed\n",
2071 r->rpool.proxy_port[0],
2072 r->rpool.proxy_port[1]));
2073 return (NULL);
2074 }
2075 break;
2076 case PF_BINAT:
2077 switch (direction) {
2078 case PF_OUT:
2256 DPFPRINTF(PF_DEBUG_MISC,
2257 ("pf: NAT proxy port allocation "
2258 "(%u-%u) failed\n",
2259 r->rpool.proxy_port[0],
2260 r->rpool.proxy_port[1]));
2261 return (NULL);
2262 }
2263 break;
2264 case PF_BINAT:
2265 switch (direction) {
2266 case PF_OUT:
2079 if (r->rpool.cur->addr.type ==
2080 PF_ADDR_DYNIFTL &&
2081 r->rpool.cur->addr.p.dyn->undefined)
2082 return (NULL);
2083 else
2267 if (r->rpool.cur->addr.type == PF_ADDR_DYNIFTL){
2268 if (pd->af == AF_INET) {
2269 if (r->rpool.cur->addr.p.dyn->
2270 pfid_acnt4 < 1)
2271 return (NULL);
2272 PF_POOLMASK(naddr,
2273 &r->rpool.cur->addr.p.dyn->
2274 pfid_addr4,
2275 &r->rpool.cur->addr.p.dyn->
2276 pfid_mask4,
2277 saddr, AF_INET);
2278 } else {
2279 if (r->rpool.cur->addr.p.dyn->
2280 pfid_acnt6 < 1)
2281 return (NULL);
2282 PF_POOLMASK(naddr,
2283 &r->rpool.cur->addr.p.dyn->
2284 pfid_addr6,
2285 &r->rpool.cur->addr.p.dyn->
2286 pfid_mask6,
2287 saddr, AF_INET6);
2288 }
2289 } else
2084 PF_POOLMASK(naddr,
2085 &r->rpool.cur->addr.v.a.addr,
2086 &r->rpool.cur->addr.v.a.mask,
2087 saddr, pd->af);
2088 break;
2089 case PF_IN:
2290 PF_POOLMASK(naddr,
2291 &r->rpool.cur->addr.v.a.addr,
2292 &r->rpool.cur->addr.v.a.mask,
2293 saddr, pd->af);
2294 break;
2295 case PF_IN:
2090 if (r->src.addr.type == PF_ADDR_DYNIFTL &&
2091 r->src.addr.p.dyn->undefined)
2092 return (NULL);
2093 else
2296 if (r->rpool.cur->addr.type == PF_ADDR_DYNIFTL){
2297 if (pd->af == AF_INET) {
2298 if (r->src.addr.p.dyn->
2299 pfid_acnt4 < 1)
2300 return (NULL);
2301 PF_POOLMASK(naddr,
2302 &r->src.addr.p.dyn->
2303 pfid_addr4,
2304 &r->src.addr.p.dyn->
2305 pfid_mask4,
2306 daddr, AF_INET);
2307 } else {
2308 if (r->src.addr.p.dyn->
2309 pfid_acnt6 < 1)
2310 return (NULL);
2311 PF_POOLMASK(naddr,
2312 &r->src.addr.p.dyn->
2313 pfid_addr6,
2314 &r->src.addr.p.dyn->
2315 pfid_mask6,
2316 daddr, AF_INET6);
2317 }
2318 } else
2094 PF_POOLMASK(naddr,
2095 &r->src.addr.v.a.addr,
2096 &r->src.addr.v.a.mask, daddr,
2097 pd->af);
2098 break;
2099 }
2100 break;
2101 case PF_RDR: {
2319 PF_POOLMASK(naddr,
2320 &r->src.addr.v.a.addr,
2321 &r->src.addr.v.a.mask, daddr,
2322 pd->af);
2323 break;
2324 }
2325 break;
2326 case PF_RDR: {
2102 if (pf_map_addr(r->af, &r->rpool, saddr, naddr, NULL))
2327 if (pf_map_addr(r->af, r, saddr, naddr, NULL, sn))
2103 return (NULL);
2104
2105 if (r->rpool.proxy_port[1]) {
2106 u_int32_t tmp_nport;
2107
2108 tmp_nport = ((ntohs(dport) -
2109 ntohs(r->dst.port[0])) %
2110 (r->rpool.proxy_port[1] -

--- 5 unchanged lines hidden (view full) ---

2116 tmp_nport -= 65535;
2117 *nport = htons((u_int16_t)tmp_nport);
2118 } else if (r->rpool.proxy_port[0])
2119 *nport = htons(r->rpool.proxy_port[0]);
2120 break;
2121 }
2122 default:
2123 return (NULL);
2328 return (NULL);
2329
2330 if (r->rpool.proxy_port[1]) {
2331 u_int32_t tmp_nport;
2332
2333 tmp_nport = ((ntohs(dport) -
2334 ntohs(r->dst.port[0])) %
2335 (r->rpool.proxy_port[1] -

--- 5 unchanged lines hidden (view full) ---

2341 tmp_nport -= 65535;
2342 *nport = htons((u_int16_t)tmp_nport);
2343 } else if (r->rpool.proxy_port[0])
2344 *nport = htons(r->rpool.proxy_port[0]);
2345 break;
2346 }
2347 default:
2348 return (NULL);
2124 break;
2125 }
2126 }
2127
2128 return (r);
2129}
2130
2131int
2349 }
2350 }
2351
2352 return (r);
2353}
2354
2355int
2132pf_socket_lookup(uid_t *uid, gid_t *gid, int direction, sa_family_t af,
2133 int proto, struct pf_pdesc *pd)
2356pf_socket_lookup(uid_t *uid, gid_t *gid, int direction, struct pf_pdesc *pd)
2134{
2135 struct pf_addr *saddr, *daddr;
2136 u_int16_t sport, dport;
2137#ifdef __FreeBSD__
2138 struct inpcbinfo *pi;
2139#else
2140 struct inpcbtable *tb;
2141#endif
2142 struct inpcb *inp;
2143
2144 *uid = UID_MAX;
2145 *gid = GID_MAX;
2357{
2358 struct pf_addr *saddr, *daddr;
2359 u_int16_t sport, dport;
2360#ifdef __FreeBSD__
2361 struct inpcbinfo *pi;
2362#else
2363 struct inpcbtable *tb;
2364#endif
2365 struct inpcb *inp;
2366
2367 *uid = UID_MAX;
2368 *gid = GID_MAX;
2146 switch (proto) {
2369 switch (pd->proto) {
2147 case IPPROTO_TCP:
2148 sport = pd->hdr.tcp->th_sport;
2149 dport = pd->hdr.tcp->th_dport;
2150#ifdef __FreeBSD__
2151 pi = &tcbinfo;
2152#else
2153 tb = &tcbtable;
2154#endif

--- 17 unchanged lines hidden (view full) ---

2172 u_int16_t p;
2173
2174 p = sport;
2175 sport = dport;
2176 dport = p;
2177 saddr = pd->dst;
2178 daddr = pd->src;
2179 }
2370 case IPPROTO_TCP:
2371 sport = pd->hdr.tcp->th_sport;
2372 dport = pd->hdr.tcp->th_dport;
2373#ifdef __FreeBSD__
2374 pi = &tcbinfo;
2375#else
2376 tb = &tcbtable;
2377#endif

--- 17 unchanged lines hidden (view full) ---

2395 u_int16_t p;
2396
2397 p = sport;
2398 sport = dport;
2399 dport = p;
2400 saddr = pd->dst;
2401 daddr = pd->src;
2402 }
2180 switch(af) {
2403 switch (pd->af) {
2181 case AF_INET:
2182#ifdef __FreeBSD__
2404 case AF_INET:
2405#ifdef __FreeBSD__
2183#if (__FreeBSD_version >= 500043)
2184 INP_INFO_RLOCK(pi); /* XXX LOR */
2406 INP_INFO_RLOCK(pi); /* XXX LOR */
2185#endif
2186 inp = in_pcblookup_hash(pi, saddr->v4, sport, daddr->v4,
2187 dport, 0, NULL);
2188 if (inp == NULL) {
2189 inp = in_pcblookup_hash(pi, saddr->v4, sport,
2190 daddr->v4, dport, INPLOOKUP_WILDCARD, NULL);
2191 if(inp == NULL) {
2407 inp = in_pcblookup_hash(pi, saddr->v4, sport, daddr->v4,
2408 dport, 0, NULL);
2409 if (inp == NULL) {
2410 inp = in_pcblookup_hash(pi, saddr->v4, sport,
2411 daddr->v4, dport, INPLOOKUP_WILDCARD, NULL);
2412 if(inp == NULL) {
2192#if (__FreeBSD_version >= 500043)
2193 INP_INFO_RUNLOCK(pi);
2413 INP_INFO_RUNLOCK(pi);
2194#endif
2195 return (0);
2196 }
2197 }
2198#else
2199 inp = in_pcbhashlookup(tb, saddr->v4, sport, daddr->v4, dport);
2200 if (inp == NULL) {
2414 return (0);
2415 }
2416 }
2417#else
2418 inp = in_pcbhashlookup(tb, saddr->v4, sport, daddr->v4, dport);
2419 if (inp == NULL) {
2201 inp = in_pcblookup(tb, &saddr->v4, sport, &daddr->v4,
2202 dport, INPLOOKUP_WILDCARD);
2420 inp = in_pcblookup_listen(tb, daddr->v4, dport, 0);
2203 if (inp == NULL)
2204 return (0);
2205 }
2206#endif
2207 break;
2208#ifdef INET6
2209 case AF_INET6:
2210#ifdef __FreeBSD__
2421 if (inp == NULL)
2422 return (0);
2423 }
2424#endif
2425 break;
2426#ifdef INET6
2427 case AF_INET6:
2428#ifdef __FreeBSD__
2211#if (__FreeBSD_version >= 500043)
2212 INP_INFO_RLOCK(pi);
2429 INP_INFO_RLOCK(pi);
2213#endif
2214 inp = in6_pcblookup_hash(pi, &saddr->v6, sport,
2215 &daddr->v6, dport, 0, NULL);
2216 if (inp == NULL) {
2217 inp = in6_pcblookup_hash(pi, &saddr->v6, sport,
2218 &daddr->v6, dport, INPLOOKUP_WILDCARD, NULL);
2219 if (inp == NULL) {
2430 inp = in6_pcblookup_hash(pi, &saddr->v6, sport,
2431 &daddr->v6, dport, 0, NULL);
2432 if (inp == NULL) {
2433 inp = in6_pcblookup_hash(pi, &saddr->v6, sport,
2434 &daddr->v6, dport, INPLOOKUP_WILDCARD, NULL);
2435 if (inp == NULL) {
2220#if (__FreeBSD_version >= 500043)
2221 INP_INFO_RUNLOCK(pi);
2436 INP_INFO_RUNLOCK(pi);
2222#endif
2223 return (0);
2224 }
2225 }
2226#else
2227 inp = in6_pcbhashlookup(tb, &saddr->v6, sport, &daddr->v6,
2228 dport);
2229 if (inp == NULL) {
2437 return (0);
2438 }
2439 }
2440#else
2441 inp = in6_pcbhashlookup(tb, &saddr->v6, sport, &daddr->v6,
2442 dport);
2443 if (inp == NULL) {
2230 inp = in_pcblookup(tb, &saddr->v6, sport, &daddr->v6,
2231 dport, INPLOOKUP_WILDCARD | INPLOOKUP_IPV6);
2444 inp = in6_pcblookup_listen(tb, &daddr->v6, dport, 0);
2232 if (inp == NULL)
2233 return (0);
2234 }
2235#endif
2236 break;
2237#endif /* INET6 */
2238
2239 default:
2240 return (0);
2241 }
2242#ifdef __FreeBSD__
2445 if (inp == NULL)
2446 return (0);
2447 }
2448#endif
2449 break;
2450#endif /* INET6 */
2451
2452 default:
2453 return (0);
2454 }
2455#ifdef __FreeBSD__
2243#if (__FreeBSD_version >= 500043)
2244 INP_LOCK(inp);
2456 INP_LOCK(inp);
2245#endif
2246 *uid = inp->inp_socket->so_cred->cr_uid;
2247 *gid = inp->inp_socket->so_cred->cr_groups[0];
2457 *uid = inp->inp_socket->so_cred->cr_uid;
2458 *gid = inp->inp_socket->so_cred->cr_groups[0];
2248#if (__FreeBSD_version >= 500043)
2249 INP_UNLOCK(inp);
2250 INP_INFO_RUNLOCK(pi);
2459 INP_UNLOCK(inp);
2460 INP_INFO_RUNLOCK(pi);
2251#endif
2252#else
2253 *uid = inp->inp_socket->so_euid;
2254 *gid = inp->inp_socket->so_egid;
2255#endif
2256 return (1);
2257}
2258
2259u_int8_t

--- 18 unchanged lines hidden (view full) ---

2278 ++opt;
2279 --hlen;
2280 break;
2281 case TCPOPT_WINDOW:
2282 wscale = opt[2];
2283 if (wscale > TCP_MAX_WINSHIFT)
2284 wscale = TCP_MAX_WINSHIFT;
2285 wscale |= PF_WSCALE_FLAG;
2461#else
2462 *uid = inp->inp_socket->so_euid;
2463 *gid = inp->inp_socket->so_egid;
2464#endif
2465 return (1);
2466}
2467
2468u_int8_t

--- 18 unchanged lines hidden (view full) ---

2487 ++opt;
2488 --hlen;
2489 break;
2490 case TCPOPT_WINDOW:
2491 wscale = opt[2];
2492 if (wscale > TCP_MAX_WINSHIFT)
2493 wscale = TCP_MAX_WINSHIFT;
2494 wscale |= PF_WSCALE_FLAG;
2286 /* fallthrough */
2495 /* FALLTHROUGH */
2287 default:
2288 optlen = opt[1];
2289 if (optlen < 2)
2290 optlen = 2;
2291 hlen -= optlen;
2292 opt += optlen;
2496 default:
2497 optlen = opt[1];
2498 if (optlen < 2)
2499 optlen = 2;
2500 hlen -= optlen;
2501 opt += optlen;
2502 break;
2293 }
2294 }
2295 return (wscale);
2296}
2297
2298u_int16_t
2299pf_get_mss(struct mbuf *m, int off, u_int16_t th_off, sa_family_t af)
2300{

--- 13 unchanged lines hidden (view full) ---

2314 switch (*opt) {
2315 case TCPOPT_EOL:
2316 case TCPOPT_NOP:
2317 ++opt;
2318 --hlen;
2319 break;
2320 case TCPOPT_MAXSEG:
2321 bcopy((caddr_t)(opt + 2), (caddr_t)&mss, 2);
2503 }
2504 }
2505 return (wscale);
2506}
2507
2508u_int16_t
2509pf_get_mss(struct mbuf *m, int off, u_int16_t th_off, sa_family_t af)
2510{

--- 13 unchanged lines hidden (view full) ---

2524 switch (*opt) {
2525 case TCPOPT_EOL:
2526 case TCPOPT_NOP:
2527 ++opt;
2528 --hlen;
2529 break;
2530 case TCPOPT_MAXSEG:
2531 bcopy((caddr_t)(opt + 2), (caddr_t)&mss, 2);
2322 /* fallthrough */
2532 /* FALLTHROUGH */
2323 default:
2324 optlen = opt[1];
2325 if (optlen < 2)
2326 optlen = 2;
2327 hlen -= optlen;
2328 opt += optlen;
2533 default:
2534 optlen = opt[1];
2535 if (optlen < 2)
2536 optlen = 2;
2537 hlen -= optlen;
2538 opt += optlen;
2539 break;
2329 }
2330 }
2331 return (mss);
2332}
2333
2334u_int16_t
2335pf_calc_mss(struct pf_addr *addr, sa_family_t af, u_int16_t offer)
2336{

--- 63 unchanged lines hidden (view full) ---

2400 return (mss);
2401}
2402
2403void
2404pf_set_rt_ifp(struct pf_state *s, struct pf_addr *saddr)
2405{
2406 struct pf_rule *r = s->rule.ptr;
2407
2540 }
2541 }
2542 return (mss);
2543}
2544
2545u_int16_t
2546pf_calc_mss(struct pf_addr *addr, sa_family_t af, u_int16_t offer)
2547{

--- 63 unchanged lines hidden (view full) ---

2611 return (mss);
2612}
2613
2614void
2615pf_set_rt_ifp(struct pf_state *s, struct pf_addr *saddr)
2616{
2617 struct pf_rule *r = s->rule.ptr;
2618
2408 s->rt_ifp = NULL;
2619 s->rt_kif = NULL;
2409 if (!r->rt || r->rt == PF_FASTROUTE)
2410 return;
2411 switch (s->af) {
2412#ifdef INET
2413 case AF_INET:
2620 if (!r->rt || r->rt == PF_FASTROUTE)
2621 return;
2622 switch (s->af) {
2623#ifdef INET
2624 case AF_INET:
2414 pf_map_addr(AF_INET, &r->rpool, saddr,
2415 &s->rt_addr, NULL);
2416 s->rt_ifp = r->rpool.cur->ifp;
2625 pf_map_addr(AF_INET, r, saddr, &s->rt_addr, NULL,
2626 &s->nat_src_node);
2627 s->rt_kif = r->rpool.cur->kif;
2417 break;
2418#endif /* INET */
2419#ifdef INET6
2420 case AF_INET6:
2628 break;
2629#endif /* INET */
2630#ifdef INET6
2631 case AF_INET6:
2421 pf_map_addr(AF_INET6, &r->rpool, saddr,
2422 &s->rt_addr, NULL);
2423 s->rt_ifp = r->rpool.cur->ifp;
2632 pf_map_addr(AF_INET6, r, saddr, &s->rt_addr, NULL,
2633 &s->nat_src_node);
2634 s->rt_kif = r->rpool.cur->kif;
2424 break;
2425#endif /* INET6 */
2426 }
2427}
2428
2429int
2430pf_test_tcp(struct pf_rule **rm, struct pf_state **sm, int direction,
2635 break;
2636#endif /* INET6 */
2637 }
2638}
2639
2640int
2641pf_test_tcp(struct pf_rule **rm, struct pf_state **sm, int direction,
2431 struct ifnet *ifp, struct mbuf *m, int ipoff, int off, void *h,
2642 struct pfi_kif *kif, struct mbuf *m, int off, void *h,
2432 struct pf_pdesc *pd, struct pf_rule **am, struct pf_ruleset **rsm)
2433{
2643 struct pf_pdesc *pd, struct pf_rule **am, struct pf_ruleset **rsm)
2644{
2434 struct pf_rule *nat = NULL, *rdr = NULL;
2645 struct pf_rule *nr = NULL;
2435 struct pf_addr *saddr = pd->src, *daddr = pd->dst;
2646 struct pf_addr *saddr = pd->src, *daddr = pd->dst;
2436 struct pf_addr baddr, naddr;
2437 struct tcphdr *th = pd->hdr.tcp;
2438 u_int16_t bport, nport = 0;
2439 sa_family_t af = pd->af;
2440 int lookup = -1;
2441 uid_t uid;
2442 gid_t gid;
2443 struct pf_rule *r, *a = NULL;
2444 struct pf_ruleset *ruleset = NULL;
2647 struct tcphdr *th = pd->hdr.tcp;
2648 u_int16_t bport, nport = 0;
2649 sa_family_t af = pd->af;
2650 int lookup = -1;
2651 uid_t uid;
2652 gid_t gid;
2653 struct pf_rule *r, *a = NULL;
2654 struct pf_ruleset *ruleset = NULL;
2655 struct pf_src_node *nsn = NULL;
2445 u_short reason;
2446 int rewrite = 0;
2447 struct pf_tag *pftag = NULL;
2448 int tag = -1;
2449 u_int16_t mss = tcp_mssdflt;
2450
2451 r = TAILQ_FIRST(pf_main_ruleset.rules[PF_RULESET_FILTER].active.ptr);
2452
2453 if (direction == PF_OUT) {
2454 bport = nport = th->th_sport;
2455 /* check outgoing packet for BINAT/NAT */
2656 u_short reason;
2657 int rewrite = 0;
2658 struct pf_tag *pftag = NULL;
2659 int tag = -1;
2660 u_int16_t mss = tcp_mssdflt;
2661
2662 r = TAILQ_FIRST(pf_main_ruleset.rules[PF_RULESET_FILTER].active.ptr);
2663
2664 if (direction == PF_OUT) {
2665 bport = nport = th->th_sport;
2666 /* check outgoing packet for BINAT/NAT */
2456 if ((nat = pf_get_translation(pd, m, off, PF_OUT, ifp,
2667 if ((nr = pf_get_translation(pd, m, off, PF_OUT, kif, &nsn,
2457 saddr, th->th_sport, daddr, th->th_dport,
2668 saddr, th->th_sport, daddr, th->th_dport,
2458 &naddr, &nport)) != NULL) {
2459 PF_ACPY(&baddr, saddr, af);
2669 &pd->naddr, &nport)) != NULL) {
2670 PF_ACPY(&pd->baddr, saddr, af);
2460 pf_change_ap(saddr, &th->th_sport, pd->ip_sum,
2671 pf_change_ap(saddr, &th->th_sport, pd->ip_sum,
2461 &th->th_sum, &naddr, nport, 0, af);
2672 &th->th_sum, &pd->naddr, nport, 0, af);
2462 rewrite++;
2673 rewrite++;
2463 if (nat->natpass)
2674 if (nr->natpass)
2464 r = NULL;
2675 r = NULL;
2676 pd->nat_rule = nr;
2465 }
2466 } else {
2467 bport = nport = th->th_dport;
2468 /* check incoming packet for BINAT/RDR */
2677 }
2678 } else {
2679 bport = nport = th->th_dport;
2680 /* check incoming packet for BINAT/RDR */
2469 if ((rdr = pf_get_translation(pd, m, off, PF_IN, ifp, saddr,
2470 th->th_sport, daddr, th->th_dport,
2471 &naddr, &nport)) != NULL) {
2472 PF_ACPY(&baddr, daddr, af);
2681 if ((nr = pf_get_translation(pd, m, off, PF_IN, kif, &nsn,
2682 saddr, th->th_sport, daddr, th->th_dport,
2683 &pd->naddr, &nport)) != NULL) {
2684 PF_ACPY(&pd->baddr, daddr, af);
2473 pf_change_ap(daddr, &th->th_dport, pd->ip_sum,
2685 pf_change_ap(daddr, &th->th_dport, pd->ip_sum,
2474 &th->th_sum, &naddr, nport, 0, af);
2686 &th->th_sum, &pd->naddr, nport, 0, af);
2475 rewrite++;
2687 rewrite++;
2476 if (rdr->natpass)
2688 if (nr->natpass)
2477 r = NULL;
2689 r = NULL;
2690 pd->nat_rule = nr;
2478 }
2479 }
2480
2481 while (r != NULL) {
2482 r->evaluations++;
2691 }
2692 }
2693
2694 while (r != NULL) {
2695 r->evaluations++;
2483 if (r->ifp != NULL && ((r->ifp != ifp && !r->ifnot) ||
2484 (r->ifp == ifp && r->ifnot)))
2696 if (r->kif != NULL &&
2697 (r->kif != kif && r->kif != kif->pfik_parent) == !r->ifnot)
2485 r = r->skip[PF_SKIP_IFP].ptr;
2486 else if (r->direction && r->direction != direction)
2487 r = r->skip[PF_SKIP_DIR].ptr;
2488 else if (r->af && r->af != af)
2489 r = r->skip[PF_SKIP_AF].ptr;
2490 else if (r->proto && r->proto != IPPROTO_TCP)
2491 r = r->skip[PF_SKIP_PROTO].ptr;
2492 else if (PF_MISMATCHAW(&r->src.addr, saddr, af, r->src.not))

--- 8 unchanged lines hidden (view full) ---

2501 r = r->skip[PF_SKIP_DST_PORT].ptr;
2502 else if (r->tos && !(r->tos & pd->tos))
2503 r = TAILQ_NEXT(r, entries);
2504 else if (r->rule_flag & PFRULE_FRAGMENT)
2505 r = TAILQ_NEXT(r, entries);
2506 else if ((r->flagset & th->th_flags) != r->flags)
2507 r = TAILQ_NEXT(r, entries);
2508 else if (r->uid.op && (lookup != -1 || (lookup =
2698 r = r->skip[PF_SKIP_IFP].ptr;
2699 else if (r->direction && r->direction != direction)
2700 r = r->skip[PF_SKIP_DIR].ptr;
2701 else if (r->af && r->af != af)
2702 r = r->skip[PF_SKIP_AF].ptr;
2703 else if (r->proto && r->proto != IPPROTO_TCP)
2704 r = r->skip[PF_SKIP_PROTO].ptr;
2705 else if (PF_MISMATCHAW(&r->src.addr, saddr, af, r->src.not))

--- 8 unchanged lines hidden (view full) ---

2714 r = r->skip[PF_SKIP_DST_PORT].ptr;
2715 else if (r->tos && !(r->tos & pd->tos))
2716 r = TAILQ_NEXT(r, entries);
2717 else if (r->rule_flag & PFRULE_FRAGMENT)
2718 r = TAILQ_NEXT(r, entries);
2719 else if ((r->flagset & th->th_flags) != r->flags)
2720 r = TAILQ_NEXT(r, entries);
2721 else if (r->uid.op && (lookup != -1 || (lookup =
2509 pf_socket_lookup(&uid, &gid, direction, af, IPPROTO_TCP,
2510 pd), 1)) &&
2722 pf_socket_lookup(&uid, &gid, direction, pd), 1)) &&
2511 !pf_match_uid(r->uid.op, r->uid.uid[0], r->uid.uid[1],
2512 uid))
2513 r = TAILQ_NEXT(r, entries);
2514 else if (r->gid.op && (lookup != -1 || (lookup =
2723 !pf_match_uid(r->uid.op, r->uid.uid[0], r->uid.uid[1],
2724 uid))
2725 r = TAILQ_NEXT(r, entries);
2726 else if (r->gid.op && (lookup != -1 || (lookup =
2515 pf_socket_lookup(&uid, &gid, direction, af, IPPROTO_TCP,
2516 pd), 1)) &&
2727 pf_socket_lookup(&uid, &gid, direction, pd), 1)) &&
2517 !pf_match_gid(r->gid.op, r->gid.gid[0], r->gid.gid[1],
2518 gid))
2519 r = TAILQ_NEXT(r, entries);
2728 !pf_match_gid(r->gid.op, r->gid.gid[0], r->gid.gid[1],
2729 gid))
2730 r = TAILQ_NEXT(r, entries);
2520 else if (r->match_tag &&
2521 !pf_match_tag(m, r, nat, rdr, pftag, &tag))
2731 else if (r->match_tag && !pf_match_tag(m, r, nr, pftag, &tag))
2522 r = TAILQ_NEXT(r, entries);
2523 else if (r->anchorname[0] && r->anchor == NULL)
2524 r = TAILQ_NEXT(r, entries);
2525 else if (r->os_fingerprint != PF_OSFP_ANY && !pf_osfp_match(
2526 pf_osfp_fingerprint(pd, m, off, th), r->os_fingerprint))
2527 r = TAILQ_NEXT(r, entries);
2528 else {
2529 if (r->tag)

--- 12 unchanged lines hidden (view full) ---

2542 if (r == NULL && a != NULL)
2543 PF_STEP_OUT_OF_ANCHOR(r, a, ruleset,
2544 PF_RULESET_FILTER);
2545 }
2546 r = *rm;
2547 a = *am;
2548 ruleset = *rsm;
2549
2732 r = TAILQ_NEXT(r, entries);
2733 else if (r->anchorname[0] && r->anchor == NULL)
2734 r = TAILQ_NEXT(r, entries);
2735 else if (r->os_fingerprint != PF_OSFP_ANY && !pf_osfp_match(
2736 pf_osfp_fingerprint(pd, m, off, th), r->os_fingerprint))
2737 r = TAILQ_NEXT(r, entries);
2738 else {
2739 if (r->tag)

--- 12 unchanged lines hidden (view full) ---

2752 if (r == NULL && a != NULL)
2753 PF_STEP_OUT_OF_ANCHOR(r, a, ruleset,
2754 PF_RULESET_FILTER);
2755 }
2756 r = *rm;
2757 a = *am;
2758 ruleset = *rsm;
2759
2550 r->packets++;
2551 r->bytes += pd->tot_len;
2552 if (a != NULL) {
2553 a->packets++;
2554 a->bytes += pd->tot_len;
2555 }
2556 REASON_SET(&reason, PFRES_MATCH);
2557
2558 if (r->log) {
2559 if (rewrite)
2560 m_copyback(m, off, sizeof(*th), (caddr_t)th);
2760 REASON_SET(&reason, PFRES_MATCH);
2761
2762 if (r->log) {
2763 if (rewrite)
2764 m_copyback(m, off, sizeof(*th), (caddr_t)th);
2561 PFLOG_PACKET(ifp, h, m, af, direction, reason, r, a, ruleset);
2765 PFLOG_PACKET(kif, h, m, af, direction, reason, r, a, ruleset);
2562 }
2563
2564 if ((r->action == PF_DROP) &&
2565 ((r->rule_flag & PFRULE_RETURNRST) ||
2566 (r->rule_flag & PFRULE_RETURNICMP) ||
2567 (r->rule_flag & PFRULE_RETURN))) {
2568 /* undo NAT changes, if they have taken place */
2766 }
2767
2768 if ((r->action == PF_DROP) &&
2769 ((r->rule_flag & PFRULE_RETURNRST) ||
2770 (r->rule_flag & PFRULE_RETURNICMP) ||
2771 (r->rule_flag & PFRULE_RETURN))) {
2772 /* undo NAT changes, if they have taken place */
2569 if (nat != NULL) {
2570 pf_change_ap(saddr, &th->th_sport, pd->ip_sum,
2571 &th->th_sum, &baddr, bport, 0, af);
2572 rewrite++;
2573 } else if (rdr != NULL) {
2574 pf_change_ap(daddr, &th->th_dport, pd->ip_sum,
2575 &th->th_sum, &baddr, bport, 0, af);
2576 rewrite++;
2773 if (nr != NULL) {
2774 if (direction == PF_OUT) {
2775 pf_change_ap(saddr, &th->th_sport, pd->ip_sum,
2776 &th->th_sum, &pd->baddr, bport, 0, af);
2777 rewrite++;
2778 } else {
2779 pf_change_ap(daddr, &th->th_dport, pd->ip_sum,
2780 &th->th_sum, &pd->baddr, bport, 0, af);
2781 rewrite++;
2782 }
2577 }
2578 if (((r->rule_flag & PFRULE_RETURNRST) ||
2579 (r->rule_flag & PFRULE_RETURN)) &&
2580 !(th->th_flags & TH_RST)) {
2581 u_int32_t ack = ntohl(th->th_seq) + pd->p_len;
2582
2583 if (th->th_flags & TH_SYN)
2584 ack++;

--- 14 unchanged lines hidden (view full) ---

2599 if (r->action == PF_DROP)
2600 return (PF_DROP);
2601
2602 if (pf_tag_packet(m, pftag, tag)) {
2603 REASON_SET(&reason, PFRES_MEMORY);
2604 return (PF_DROP);
2605 }
2606
2783 }
2784 if (((r->rule_flag & PFRULE_RETURNRST) ||
2785 (r->rule_flag & PFRULE_RETURN)) &&
2786 !(th->th_flags & TH_RST)) {
2787 u_int32_t ack = ntohl(th->th_seq) + pd->p_len;
2788
2789 if (th->th_flags & TH_SYN)
2790 ack++;

--- 14 unchanged lines hidden (view full) ---

2805 if (r->action == PF_DROP)
2806 return (PF_DROP);
2807
2808 if (pf_tag_packet(m, pftag, tag)) {
2809 REASON_SET(&reason, PFRES_MEMORY);
2810 return (PF_DROP);
2811 }
2812
2607 if (r->keep_state || nat != NULL || rdr != NULL ||
2813 if (r->keep_state || nr != NULL ||
2608 (pd->flags & PFDESC_TCP_NORM)) {
2609 /* create new state */
2610 u_int16_t len;
2611 struct pf_state *s = NULL;
2814 (pd->flags & PFDESC_TCP_NORM)) {
2815 /* create new state */
2816 u_int16_t len;
2817 struct pf_state *s = NULL;
2818 struct pf_src_node *sn = NULL;
2612
2613 len = pd->tot_len - off - (th->th_off << 2);
2819
2820 len = pd->tot_len - off - (th->th_off << 2);
2614 if (!r->max_states || r->states < r->max_states)
2615 s = pool_get(&pf_state_pl, PR_NOWAIT);
2821
2822 /* check maximums */
2823 if (r->max_states && (r->states >= r->max_states))
2824 goto cleanup;
2825 /* src node for flter rule */
2826 if ((r->rule_flag & PFRULE_SRCTRACK ||
2827 r->rpool.opts & PF_POOL_STICKYADDR) &&
2828 pf_insert_src_node(&sn, r, saddr, af) != 0)
2829 goto cleanup;
2830 /* src node for translation rule */
2831 if (nr != NULL && (nr->rpool.opts & PF_POOL_STICKYADDR) &&
2832 ((direction == PF_OUT &&
2833 pf_insert_src_node(&nsn, nr, &pd->baddr, af) != 0) ||
2834 (pf_insert_src_node(&nsn, nr, saddr, af) != 0)))
2835 goto cleanup;
2836 s = pool_get(&pf_state_pl, PR_NOWAIT);
2616 if (s == NULL) {
2837 if (s == NULL) {
2838cleanup:
2839 if (sn != NULL && sn->states == 0 && sn->expire == 0) {
2840 RB_REMOVE(pf_src_tree, &tree_src_tracking, sn);
2841 pf_status.scounters[SCNT_SRC_NODE_REMOVALS]++;
2842 pf_status.src_nodes--;
2843 pool_put(&pf_src_tree_pl, sn);
2844 }
2845 if (nsn != sn && nsn != NULL && nsn->states == 0 &&
2846 nsn->expire == 0) {
2847 RB_REMOVE(pf_src_tree, &tree_src_tracking, nsn);
2848 pf_status.scounters[SCNT_SRC_NODE_REMOVALS]++;
2849 pf_status.src_nodes--;
2850 pool_put(&pf_src_tree_pl, nsn);
2851 }
2617 REASON_SET(&reason, PFRES_MEMORY);
2618 return (PF_DROP);
2619 }
2620 bzero(s, sizeof(*s));
2621 r->states++;
2622 if (a != NULL)
2623 a->states++;
2624 s->rule.ptr = r;
2852 REASON_SET(&reason, PFRES_MEMORY);
2853 return (PF_DROP);
2854 }
2855 bzero(s, sizeof(*s));
2856 r->states++;
2857 if (a != NULL)
2858 a->states++;
2859 s->rule.ptr = r;
2625 if (nat != NULL)
2626 s->nat_rule.ptr = nat;
2627 else
2628 s->nat_rule.ptr = rdr;
2860 s->nat_rule.ptr = nr;
2629 if (s->nat_rule.ptr != NULL)
2630 s->nat_rule.ptr->states++;
2631 s->anchor.ptr = a;
2632 s->allow_opts = r->allow_opts;
2633 s->log = r->log & 2;
2634 s->proto = IPPROTO_TCP;
2635 s->direction = direction;
2636 s->af = af;
2637 if (direction == PF_OUT) {
2638 PF_ACPY(&s->gwy.addr, saddr, af);
2639 s->gwy.port = th->th_sport; /* sport */
2640 PF_ACPY(&s->ext.addr, daddr, af);
2641 s->ext.port = th->th_dport;
2861 if (s->nat_rule.ptr != NULL)
2862 s->nat_rule.ptr->states++;
2863 s->anchor.ptr = a;
2864 s->allow_opts = r->allow_opts;
2865 s->log = r->log & 2;
2866 s->proto = IPPROTO_TCP;
2867 s->direction = direction;
2868 s->af = af;
2869 if (direction == PF_OUT) {
2870 PF_ACPY(&s->gwy.addr, saddr, af);
2871 s->gwy.port = th->th_sport; /* sport */
2872 PF_ACPY(&s->ext.addr, daddr, af);
2873 s->ext.port = th->th_dport;
2642 if (nat != NULL) {
2643 PF_ACPY(&s->lan.addr, &baddr, af);
2874 if (nr != NULL) {
2875 PF_ACPY(&s->lan.addr, &pd->baddr, af);
2644 s->lan.port = bport;
2645 } else {
2646 PF_ACPY(&s->lan.addr, &s->gwy.addr, af);
2647 s->lan.port = s->gwy.port;
2648 }
2649 } else {
2650 PF_ACPY(&s->lan.addr, daddr, af);
2651 s->lan.port = th->th_dport;
2652 PF_ACPY(&s->ext.addr, saddr, af);
2653 s->ext.port = th->th_sport;
2876 s->lan.port = bport;
2877 } else {
2878 PF_ACPY(&s->lan.addr, &s->gwy.addr, af);
2879 s->lan.port = s->gwy.port;
2880 }
2881 } else {
2882 PF_ACPY(&s->lan.addr, daddr, af);
2883 s->lan.port = th->th_dport;
2884 PF_ACPY(&s->ext.addr, saddr, af);
2885 s->ext.port = th->th_sport;
2654 if (rdr != NULL) {
2655 PF_ACPY(&s->gwy.addr, &baddr, af);
2886 if (nr != NULL) {
2887 PF_ACPY(&s->gwy.addr, &pd->baddr, af);
2656 s->gwy.port = bport;
2657 } else {
2658 PF_ACPY(&s->gwy.addr, &s->lan.addr, af);
2659 s->gwy.port = s->lan.port;
2660 }
2661 }
2662
2663 s->src.seqlo = ntohl(th->th_seq);

--- 17 unchanged lines hidden (view full) ---

2681 /* Remove scale factor from initial window */
2682 int win = s->src.max_win;
2683 win += 1 << (s->src.wscale & PF_WSCALE_MASK);
2684 s->src.max_win = (win - 1) >>
2685 (s->src.wscale & PF_WSCALE_MASK);
2686 }
2687 if (th->th_flags & TH_FIN)
2688 s->src.seqhi++;
2888 s->gwy.port = bport;
2889 } else {
2890 PF_ACPY(&s->gwy.addr, &s->lan.addr, af);
2891 s->gwy.port = s->lan.port;
2892 }
2893 }
2894
2895 s->src.seqlo = ntohl(th->th_seq);

--- 17 unchanged lines hidden (view full) ---

2913 /* Remove scale factor from initial window */
2914 int win = s->src.max_win;
2915 win += 1 << (s->src.wscale & PF_WSCALE_MASK);
2916 s->src.max_win = (win - 1) >>
2917 (s->src.wscale & PF_WSCALE_MASK);
2918 }
2919 if (th->th_flags & TH_FIN)
2920 s->src.seqhi++;
2689 s->dst.seqlo = 0; /* Haven't seen these yet */
2690 s->dst.seqhi = 1;
2691 s->dst.max_win = 1;
2921 s->dst.seqhi = 1;
2922 s->dst.max_win = 1;
2692 s->dst.seqdiff = 0; /* Defer random generation */
2693 s->src.state = TCPS_SYN_SENT;
2694 s->dst.state = TCPS_CLOSED;
2695#ifdef __FreeBSD__
2696 s->creation = time_second;
2697 s->expire = time_second;
2698#else
2699 s->creation = time.tv_sec;
2700 s->expire = time.tv_sec;
2701#endif
2702 s->timeout = PFTM_TCP_FIRST_PACKET;
2923 s->src.state = TCPS_SYN_SENT;
2924 s->dst.state = TCPS_CLOSED;
2925#ifdef __FreeBSD__
2926 s->creation = time_second;
2927 s->expire = time_second;
2928#else
2929 s->creation = time.tv_sec;
2930 s->expire = time.tv_sec;
2931#endif
2932 s->timeout = PFTM_TCP_FIRST_PACKET;
2703 s->packets[0] = 1;
2704 s->bytes[0] = pd->tot_len;
2705 pf_set_rt_ifp(s, saddr);
2933 pf_set_rt_ifp(s, saddr);
2706
2934 if (sn != NULL) {
2935 s->src_node = sn;
2936 s->src_node->states++;
2937 }
2938 if (nsn != NULL) {
2939 PF_ACPY(&nsn->raddr, &pd->naddr, af);
2940 s->nat_src_node = nsn;
2941 s->nat_src_node->states++;
2942 }
2707 if ((pd->flags & PFDESC_TCP_NORM) && pf_normalize_tcp_init(m,
2708 off, pd, th, &s->src, &s->dst)) {
2709 REASON_SET(&reason, PFRES_MEMORY);
2943 if ((pd->flags & PFDESC_TCP_NORM) && pf_normalize_tcp_init(m,
2944 off, pd, th, &s->src, &s->dst)) {
2945 REASON_SET(&reason, PFRES_MEMORY);
2946 pf_src_tree_remove_state(s);
2710 pool_put(&pf_state_pl, s);
2711 return (PF_DROP);
2712 }
2713 if ((pd->flags & PFDESC_TCP_NORM) && s->src.scrub &&
2714 pf_normalize_tcp_stateful(m, off, pd, &reason, th, &s->src,
2715 &s->dst, &rewrite)) {
2716 pf_normalize_tcp_cleanup(s);
2947 pool_put(&pf_state_pl, s);
2948 return (PF_DROP);
2949 }
2950 if ((pd->flags & PFDESC_TCP_NORM) && s->src.scrub &&
2951 pf_normalize_tcp_stateful(m, off, pd, &reason, th, &s->src,
2952 &s->dst, &rewrite)) {
2953 pf_normalize_tcp_cleanup(s);
2954 pf_src_tree_remove_state(s);
2717 pool_put(&pf_state_pl, s);
2718 return (PF_DROP);
2719 }
2955 pool_put(&pf_state_pl, s);
2956 return (PF_DROP);
2957 }
2720 if (pf_insert_state(s)) {
2958 if (pf_insert_state(BOUND_IFACE(r, kif), s)) {
2721 pf_normalize_tcp_cleanup(s);
2722 REASON_SET(&reason, PFRES_MEMORY);
2959 pf_normalize_tcp_cleanup(s);
2960 REASON_SET(&reason, PFRES_MEMORY);
2961 pf_src_tree_remove_state(s);
2723 pool_put(&pf_state_pl, s);
2724 return (PF_DROP);
2725 } else
2726 *sm = s;
2727 if ((th->th_flags & (TH_SYN|TH_ACK)) == TH_SYN &&
2728 r->keep_state == PF_STATE_SYNPROXY) {
2729 s->src.state = PF_TCPS_PROXY_SRC;
2962 pool_put(&pf_state_pl, s);
2963 return (PF_DROP);
2964 } else
2965 *sm = s;
2966 if ((th->th_flags & (TH_SYN|TH_ACK)) == TH_SYN &&
2967 r->keep_state == PF_STATE_SYNPROXY) {
2968 s->src.state = PF_TCPS_PROXY_SRC;
2730 if (nat != NULL)
2731 pf_change_ap(saddr, &th->th_sport,
2732 pd->ip_sum, &th->th_sum, &baddr,
2733 bport, 0, af);
2734 else if (rdr != NULL)
2735 pf_change_ap(daddr, &th->th_dport,
2736 pd->ip_sum, &th->th_sum, &baddr,
2737 bport, 0, af);
2969 if (nr != NULL) {
2970 if (direction == PF_OUT) {
2971 pf_change_ap(saddr, &th->th_sport,
2972 pd->ip_sum, &th->th_sum, &pd->baddr,
2973 bport, 0, af);
2974 } else {
2975 pf_change_ap(daddr, &th->th_dport,
2976 pd->ip_sum, &th->th_sum, &pd->baddr,
2977 bport, 0, af);
2978 }
2979 }
2738 s->src.seqhi = arc4random();
2739 /* Find mss option */
2740 mss = pf_get_mss(m, off, th->th_off, af);
2741 mss = pf_calc_mss(saddr, af, mss);
2742 mss = pf_calc_mss(daddr, af, mss);
2743 s->src.mss = mss;
2744 pf_send_tcp(r, af, daddr, saddr, th->th_dport,
2980 s->src.seqhi = arc4random();
2981 /* Find mss option */
2982 mss = pf_get_mss(m, off, th->th_off, af);
2983 mss = pf_calc_mss(saddr, af, mss);
2984 mss = pf_calc_mss(daddr, af, mss);
2985 s->src.mss = mss;
2986 pf_send_tcp(r, af, daddr, saddr, th->th_dport,
2745 th->th_sport, s->src.seqhi,
2746 ntohl(th->th_seq) + 1, TH_SYN|TH_ACK, 0, s->src.mss, 0);
2987 th->th_sport, s->src.seqhi, ntohl(th->th_seq) + 1,
2988 TH_SYN|TH_ACK, 0, s->src.mss, 0);
2747 return (PF_SYNPROXY_DROP);
2748 }
2749 }
2750
2751 /* copy back packet headers if we performed NAT operations */
2752 if (rewrite)
2753 m_copyback(m, off, sizeof(*th), (caddr_t)th);
2754
2755 return (PF_PASS);
2756}
2757
2758int
2759pf_test_udp(struct pf_rule **rm, struct pf_state **sm, int direction,
2989 return (PF_SYNPROXY_DROP);
2990 }
2991 }
2992
2993 /* copy back packet headers if we performed NAT operations */
2994 if (rewrite)
2995 m_copyback(m, off, sizeof(*th), (caddr_t)th);
2996
2997 return (PF_PASS);
2998}
2999
3000int
3001pf_test_udp(struct pf_rule **rm, struct pf_state **sm, int direction,
2760 struct ifnet *ifp, struct mbuf *m, int ipoff, int off, void *h,
3002 struct pfi_kif *kif, struct mbuf *m, int off, void *h,
2761 struct pf_pdesc *pd, struct pf_rule **am, struct pf_ruleset **rsm)
2762{
3003 struct pf_pdesc *pd, struct pf_rule **am, struct pf_ruleset **rsm)
3004{
2763 struct pf_rule *nat = NULL, *rdr = NULL;
3005 struct pf_rule *nr = NULL;
2764 struct pf_addr *saddr = pd->src, *daddr = pd->dst;
3006 struct pf_addr *saddr = pd->src, *daddr = pd->dst;
2765 struct pf_addr baddr, naddr;
2766 struct udphdr *uh = pd->hdr.udp;
2767 u_int16_t bport, nport = 0;
2768 sa_family_t af = pd->af;
2769 int lookup = -1;
2770 uid_t uid;
2771 gid_t gid;
2772 struct pf_rule *r, *a = NULL;
2773 struct pf_ruleset *ruleset = NULL;
3007 struct udphdr *uh = pd->hdr.udp;
3008 u_int16_t bport, nport = 0;
3009 sa_family_t af = pd->af;
3010 int lookup = -1;
3011 uid_t uid;
3012 gid_t gid;
3013 struct pf_rule *r, *a = NULL;
3014 struct pf_ruleset *ruleset = NULL;
3015 struct pf_src_node *nsn = NULL;
2774 u_short reason;
2775 int rewrite = 0;
2776 struct pf_tag *pftag = NULL;
2777 int tag = -1;
2778
2779 r = TAILQ_FIRST(pf_main_ruleset.rules[PF_RULESET_FILTER].active.ptr);
2780
2781 if (direction == PF_OUT) {
2782 bport = nport = uh->uh_sport;
2783 /* check outgoing packet for BINAT/NAT */
3016 u_short reason;
3017 int rewrite = 0;
3018 struct pf_tag *pftag = NULL;
3019 int tag = -1;
3020
3021 r = TAILQ_FIRST(pf_main_ruleset.rules[PF_RULESET_FILTER].active.ptr);
3022
3023 if (direction == PF_OUT) {
3024 bport = nport = uh->uh_sport;
3025 /* check outgoing packet for BINAT/NAT */
2784 if ((nat = pf_get_translation(pd, m, off, PF_OUT, ifp,
3026 if ((nr = pf_get_translation(pd, m, off, PF_OUT, kif, &nsn,
2785 saddr, uh->uh_sport, daddr, uh->uh_dport,
3027 saddr, uh->uh_sport, daddr, uh->uh_dport,
2786 &naddr, &nport)) != NULL) {
2787 PF_ACPY(&baddr, saddr, af);
3028 &pd->naddr, &nport)) != NULL) {
3029 PF_ACPY(&pd->baddr, saddr, af);
2788 pf_change_ap(saddr, &uh->uh_sport, pd->ip_sum,
3030 pf_change_ap(saddr, &uh->uh_sport, pd->ip_sum,
2789 &uh->uh_sum, &naddr, nport, 1, af);
3031 &uh->uh_sum, &pd->naddr, nport, 1, af);
2790 rewrite++;
3032 rewrite++;
2791 if (nat->natpass)
3033 if (nr->natpass)
2792 r = NULL;
3034 r = NULL;
3035 pd->nat_rule = nr;
2793 }
2794 } else {
2795 bport = nport = uh->uh_dport;
2796 /* check incoming packet for BINAT/RDR */
3036 }
3037 } else {
3038 bport = nport = uh->uh_dport;
3039 /* check incoming packet for BINAT/RDR */
2797 if ((rdr = pf_get_translation(pd, m, off, PF_IN, ifp, saddr,
2798 uh->uh_sport, daddr, uh->uh_dport, &naddr, &nport))
2799 != NULL) {
2800 PF_ACPY(&baddr, daddr, af);
3040 if ((nr = pf_get_translation(pd, m, off, PF_IN, kif, &nsn,
3041 saddr, uh->uh_sport, daddr, uh->uh_dport, &pd->naddr,
3042 &nport)) != NULL) {
3043 PF_ACPY(&pd->baddr, daddr, af);
2801 pf_change_ap(daddr, &uh->uh_dport, pd->ip_sum,
3044 pf_change_ap(daddr, &uh->uh_dport, pd->ip_sum,
2802 &uh->uh_sum, &naddr, nport, 1, af);
3045 &uh->uh_sum, &pd->naddr, nport, 1, af);
2803 rewrite++;
3046 rewrite++;
2804 if (rdr->natpass)
3047 if (nr->natpass)
2805 r = NULL;
3048 r = NULL;
3049 pd->nat_rule = nr;
2806 }
2807 }
2808
2809 while (r != NULL) {
2810 r->evaluations++;
3050 }
3051 }
3052
3053 while (r != NULL) {
3054 r->evaluations++;
2811 if (r->ifp != NULL && ((r->ifp != ifp && !r->ifnot) ||
2812 (r->ifp == ifp && r->ifnot)))
3055 if (r->kif != NULL &&
3056 (r->kif != kif && r->kif != kif->pfik_parent) == !r->ifnot)
2813 r = r->skip[PF_SKIP_IFP].ptr;
2814 else if (r->direction && r->direction != direction)
2815 r = r->skip[PF_SKIP_DIR].ptr;
2816 else if (r->af && r->af != af)
2817 r = r->skip[PF_SKIP_AF].ptr;
2818 else if (r->proto && r->proto != IPPROTO_UDP)
2819 r = r->skip[PF_SKIP_PROTO].ptr;
2820 else if (PF_MISMATCHAW(&r->src.addr, saddr, af, r->src.not))

--- 6 unchanged lines hidden (view full) ---

2827 else if (r->dst.port_op && !pf_match_port(r->dst.port_op,
2828 r->dst.port[0], r->dst.port[1], uh->uh_dport))
2829 r = r->skip[PF_SKIP_DST_PORT].ptr;
2830 else if (r->tos && !(r->tos & pd->tos))
2831 r = TAILQ_NEXT(r, entries);
2832 else if (r->rule_flag & PFRULE_FRAGMENT)
2833 r = TAILQ_NEXT(r, entries);
2834 else if (r->uid.op && (lookup != -1 || (lookup =
3057 r = r->skip[PF_SKIP_IFP].ptr;
3058 else if (r->direction && r->direction != direction)
3059 r = r->skip[PF_SKIP_DIR].ptr;
3060 else if (r->af && r->af != af)
3061 r = r->skip[PF_SKIP_AF].ptr;
3062 else if (r->proto && r->proto != IPPROTO_UDP)
3063 r = r->skip[PF_SKIP_PROTO].ptr;
3064 else if (PF_MISMATCHAW(&r->src.addr, saddr, af, r->src.not))

--- 6 unchanged lines hidden (view full) ---

3071 else if (r->dst.port_op && !pf_match_port(r->dst.port_op,
3072 r->dst.port[0], r->dst.port[1], uh->uh_dport))
3073 r = r->skip[PF_SKIP_DST_PORT].ptr;
3074 else if (r->tos && !(r->tos & pd->tos))
3075 r = TAILQ_NEXT(r, entries);
3076 else if (r->rule_flag & PFRULE_FRAGMENT)
3077 r = TAILQ_NEXT(r, entries);
3078 else if (r->uid.op && (lookup != -1 || (lookup =
2835 pf_socket_lookup(&uid, &gid, direction, af, IPPROTO_UDP,
2836 pd), 1)) &&
3079 pf_socket_lookup(&uid, &gid, direction, pd), 1)) &&
2837 !pf_match_uid(r->uid.op, r->uid.uid[0], r->uid.uid[1],
2838 uid))
2839 r = TAILQ_NEXT(r, entries);
2840 else if (r->gid.op && (lookup != -1 || (lookup =
3080 !pf_match_uid(r->uid.op, r->uid.uid[0], r->uid.uid[1],
3081 uid))
3082 r = TAILQ_NEXT(r, entries);
3083 else if (r->gid.op && (lookup != -1 || (lookup =
2841 pf_socket_lookup(&uid, &gid, direction, af, IPPROTO_UDP,
2842 pd), 1)) &&
3084 pf_socket_lookup(&uid, &gid, direction, pd), 1)) &&
2843 !pf_match_gid(r->gid.op, r->gid.gid[0], r->gid.gid[1],
2844 gid))
2845 r = TAILQ_NEXT(r, entries);
3085 !pf_match_gid(r->gid.op, r->gid.gid[0], r->gid.gid[1],
3086 gid))
3087 r = TAILQ_NEXT(r, entries);
2846 else if (r->match_tag &&
2847 !pf_match_tag(m, r, nat, rdr, pftag, &tag))
3088 else if (r->match_tag && !pf_match_tag(m, r, nr, pftag, &tag))
2848 r = TAILQ_NEXT(r, entries);
2849 else if (r->anchorname[0] && r->anchor == NULL)
2850 r = TAILQ_NEXT(r, entries);
2851 else if (r->os_fingerprint != PF_OSFP_ANY)
2852 r = TAILQ_NEXT(r, entries);
2853 else {
2854 if (r->tag)
2855 tag = r->tag;

--- 11 unchanged lines hidden (view full) ---

2867 if (r == NULL && a != NULL)
2868 PF_STEP_OUT_OF_ANCHOR(r, a, ruleset,
2869 PF_RULESET_FILTER);
2870 }
2871 r = *rm;
2872 a = *am;
2873 ruleset = *rsm;
2874
3089 r = TAILQ_NEXT(r, entries);
3090 else if (r->anchorname[0] && r->anchor == NULL)
3091 r = TAILQ_NEXT(r, entries);
3092 else if (r->os_fingerprint != PF_OSFP_ANY)
3093 r = TAILQ_NEXT(r, entries);
3094 else {
3095 if (r->tag)
3096 tag = r->tag;

--- 11 unchanged lines hidden (view full) ---

3108 if (r == NULL && a != NULL)
3109 PF_STEP_OUT_OF_ANCHOR(r, a, ruleset,
3110 PF_RULESET_FILTER);
3111 }
3112 r = *rm;
3113 a = *am;
3114 ruleset = *rsm;
3115
2875 r->packets++;
2876 r->bytes += pd->tot_len;
2877 if (a != NULL) {
2878 a->packets++;
2879 a->bytes += pd->tot_len;
2880 }
2881 REASON_SET(&reason, PFRES_MATCH);
2882
2883 if (r->log) {
2884 if (rewrite)
2885 m_copyback(m, off, sizeof(*uh), (caddr_t)uh);
3116 REASON_SET(&reason, PFRES_MATCH);
3117
3118 if (r->log) {
3119 if (rewrite)
3120 m_copyback(m, off, sizeof(*uh), (caddr_t)uh);
2886 PFLOG_PACKET(ifp, h, m, af, direction, reason, r, a, ruleset);
3121 PFLOG_PACKET(kif, h, m, af, direction, reason, r, a, ruleset);
2887 }
2888
2889 if ((r->action == PF_DROP) &&
2890 ((r->rule_flag & PFRULE_RETURNICMP) ||
2891 (r->rule_flag & PFRULE_RETURN))) {
2892 /* undo NAT changes, if they have taken place */
3122 }
3123
3124 if ((r->action == PF_DROP) &&
3125 ((r->rule_flag & PFRULE_RETURNICMP) ||
3126 (r->rule_flag & PFRULE_RETURN))) {
3127 /* undo NAT changes, if they have taken place */
2893 if (nat != NULL) {
2894 pf_change_ap(saddr, &uh->uh_sport, pd->ip_sum,
2895 &uh->uh_sum, &baddr, bport, 1, af);
2896 rewrite++;
2897 } else if (rdr != NULL) {
2898 pf_change_ap(daddr, &uh->uh_dport, pd->ip_sum,
2899 &uh->uh_sum, &baddr, bport, 1, af);
2900 rewrite++;
3128 if (nr != NULL) {
3129 if (direction == PF_OUT) {
3130 pf_change_ap(saddr, &uh->uh_sport, pd->ip_sum,
3131 &uh->uh_sum, &pd->baddr, bport, 1, af);
3132 rewrite++;
3133 } else {
3134 pf_change_ap(daddr, &uh->uh_dport, pd->ip_sum,
3135 &uh->uh_sum, &pd->baddr, bport, 1, af);
3136 rewrite++;
3137 }
2901 }
2902 if ((af == AF_INET) && r->return_icmp)
2903 pf_send_icmp(m, r->return_icmp >> 8,
2904 r->return_icmp & 255, af, r);
2905 else if ((af == AF_INET6) && r->return_icmp6)
2906 pf_send_icmp(m, r->return_icmp6 >> 8,
2907 r->return_icmp6 & 255, af, r);
2908 }
2909
2910 if (r->action == PF_DROP)
2911 return (PF_DROP);
2912
2913 if (pf_tag_packet(m, pftag, tag)) {
2914 REASON_SET(&reason, PFRES_MEMORY);
2915 return (PF_DROP);
2916 }
2917
3138 }
3139 if ((af == AF_INET) && r->return_icmp)
3140 pf_send_icmp(m, r->return_icmp >> 8,
3141 r->return_icmp & 255, af, r);
3142 else if ((af == AF_INET6) && r->return_icmp6)
3143 pf_send_icmp(m, r->return_icmp6 >> 8,
3144 r->return_icmp6 & 255, af, r);
3145 }
3146
3147 if (r->action == PF_DROP)
3148 return (PF_DROP);
3149
3150 if (pf_tag_packet(m, pftag, tag)) {
3151 REASON_SET(&reason, PFRES_MEMORY);
3152 return (PF_DROP);
3153 }
3154
2918 if (r->keep_state || nat != NULL || rdr != NULL) {
3155 if (r->keep_state || nr != NULL) {
2919 /* create new state */
2920 struct pf_state *s = NULL;
3156 /* create new state */
3157 struct pf_state *s = NULL;
3158 struct pf_src_node *sn = NULL;
2921
3159
2922 if (!r->max_states || r->states < r->max_states)
2923 s = pool_get(&pf_state_pl, PR_NOWAIT);
3160 /* check maximums */
3161 if (r->max_states && (r->states >= r->max_states))
3162 goto cleanup;
3163 /* src node for flter rule */
3164 if ((r->rule_flag & PFRULE_SRCTRACK ||
3165 r->rpool.opts & PF_POOL_STICKYADDR) &&
3166 pf_insert_src_node(&sn, r, saddr, af) != 0)
3167 goto cleanup;
3168 /* src node for translation rule */
3169 if (nr != NULL && (nr->rpool.opts & PF_POOL_STICKYADDR) &&
3170 ((direction == PF_OUT &&
3171 pf_insert_src_node(&nsn, nr, &pd->baddr, af) != 0) ||
3172 (pf_insert_src_node(&nsn, nr, saddr, af) != 0)))
3173 goto cleanup;
3174 s = pool_get(&pf_state_pl, PR_NOWAIT);
2924 if (s == NULL) {
3175 if (s == NULL) {
3176cleanup:
3177 if (sn != NULL && sn->states == 0 && sn->expire == 0) {
3178 RB_REMOVE(pf_src_tree, &tree_src_tracking, sn);
3179 pf_status.scounters[SCNT_SRC_NODE_REMOVALS]++;
3180 pf_status.src_nodes--;
3181 pool_put(&pf_src_tree_pl, sn);
3182 }
3183 if (nsn != sn && nsn != NULL && nsn->states == 0 &&
3184 nsn->expire == 0) {
3185 RB_REMOVE(pf_src_tree, &tree_src_tracking, nsn);
3186 pf_status.scounters[SCNT_SRC_NODE_REMOVALS]++;
3187 pf_status.src_nodes--;
3188 pool_put(&pf_src_tree_pl, nsn);
3189 }
2925 REASON_SET(&reason, PFRES_MEMORY);
2926 return (PF_DROP);
2927 }
2928 bzero(s, sizeof(*s));
2929 r->states++;
2930 if (a != NULL)
2931 a->states++;
2932 s->rule.ptr = r;
3190 REASON_SET(&reason, PFRES_MEMORY);
3191 return (PF_DROP);
3192 }
3193 bzero(s, sizeof(*s));
3194 r->states++;
3195 if (a != NULL)
3196 a->states++;
3197 s->rule.ptr = r;
2933 if (nat != NULL)
2934 s->nat_rule.ptr = nat;
2935 else
2936 s->nat_rule.ptr = rdr;
3198 s->nat_rule.ptr = nr;
2937 if (s->nat_rule.ptr != NULL)
2938 s->nat_rule.ptr->states++;
2939 s->anchor.ptr = a;
2940 s->allow_opts = r->allow_opts;
2941 s->log = r->log & 2;
2942 s->proto = IPPROTO_UDP;
2943 s->direction = direction;
2944 s->af = af;
2945 if (direction == PF_OUT) {
2946 PF_ACPY(&s->gwy.addr, saddr, af);
2947 s->gwy.port = uh->uh_sport;
2948 PF_ACPY(&s->ext.addr, daddr, af);
2949 s->ext.port = uh->uh_dport;
3199 if (s->nat_rule.ptr != NULL)
3200 s->nat_rule.ptr->states++;
3201 s->anchor.ptr = a;
3202 s->allow_opts = r->allow_opts;
3203 s->log = r->log & 2;
3204 s->proto = IPPROTO_UDP;
3205 s->direction = direction;
3206 s->af = af;
3207 if (direction == PF_OUT) {
3208 PF_ACPY(&s->gwy.addr, saddr, af);
3209 s->gwy.port = uh->uh_sport;
3210 PF_ACPY(&s->ext.addr, daddr, af);
3211 s->ext.port = uh->uh_dport;
2950 if (nat != NULL) {
2951 PF_ACPY(&s->lan.addr, &baddr, af);
3212 if (nr != NULL) {
3213 PF_ACPY(&s->lan.addr, &pd->baddr, af);
2952 s->lan.port = bport;
2953 } else {
2954 PF_ACPY(&s->lan.addr, &s->gwy.addr, af);
2955 s->lan.port = s->gwy.port;
2956 }
2957 } else {
2958 PF_ACPY(&s->lan.addr, daddr, af);
2959 s->lan.port = uh->uh_dport;
2960 PF_ACPY(&s->ext.addr, saddr, af);
2961 s->ext.port = uh->uh_sport;
3214 s->lan.port = bport;
3215 } else {
3216 PF_ACPY(&s->lan.addr, &s->gwy.addr, af);
3217 s->lan.port = s->gwy.port;
3218 }
3219 } else {
3220 PF_ACPY(&s->lan.addr, daddr, af);
3221 s->lan.port = uh->uh_dport;
3222 PF_ACPY(&s->ext.addr, saddr, af);
3223 s->ext.port = uh->uh_sport;
2962 if (rdr != NULL) {
2963 PF_ACPY(&s->gwy.addr, &baddr, af);
3224 if (nr != NULL) {
3225 PF_ACPY(&s->gwy.addr, &pd->baddr, af);
2964 s->gwy.port = bport;
2965 } else {
2966 PF_ACPY(&s->gwy.addr, &s->lan.addr, af);
2967 s->gwy.port = s->lan.port;
2968 }
2969 }
3226 s->gwy.port = bport;
3227 } else {
3228 PF_ACPY(&s->gwy.addr, &s->lan.addr, af);
3229 s->gwy.port = s->lan.port;
3230 }
3231 }
2970 s->src.seqlo = 0;
2971 s->src.seqhi = 0;
2972 s->src.seqdiff = 0;
2973 s->src.max_win = 0;
2974 s->src.state = PFUDPS_SINGLE;
3232 s->src.state = PFUDPS_SINGLE;
2975 s->dst.seqlo = 0;
2976 s->dst.seqhi = 0;
2977 s->dst.seqdiff = 0;
2978 s->dst.max_win = 0;
2979 s->dst.state = PFUDPS_NO_TRAFFIC;
2980#ifdef __FreeBSD__
2981 s->creation = time_second;
2982 s->expire = time_second;
2983#else
2984 s->creation = time.tv_sec;
2985 s->expire = time.tv_sec;
2986#endif
2987 s->timeout = PFTM_UDP_FIRST_PACKET;
3233 s->dst.state = PFUDPS_NO_TRAFFIC;
3234#ifdef __FreeBSD__
3235 s->creation = time_second;
3236 s->expire = time_second;
3237#else
3238 s->creation = time.tv_sec;
3239 s->expire = time.tv_sec;
3240#endif
3241 s->timeout = PFTM_UDP_FIRST_PACKET;
2988 s->packets[0] = 1;
2989 s->bytes[0] = pd->tot_len;
2990 pf_set_rt_ifp(s, saddr);
3242 pf_set_rt_ifp(s, saddr);
2991 if (pf_insert_state(s)) {
3243 if (sn != NULL) {
3244 s->src_node = sn;
3245 s->src_node->states++;
3246 }
3247 if (nsn != NULL) {
3248 PF_ACPY(&nsn->raddr, &pd->naddr, af);
3249 s->nat_src_node = nsn;
3250 s->nat_src_node->states++;
3251 }
3252 if (pf_insert_state(BOUND_IFACE(r, kif), s)) {
2992 REASON_SET(&reason, PFRES_MEMORY);
3253 REASON_SET(&reason, PFRES_MEMORY);
3254 pf_src_tree_remove_state(s);
2993 pool_put(&pf_state_pl, s);
2994 return (PF_DROP);
2995 } else
2996 *sm = s;
2997 }
2998
2999 /* copy back packet headers if we performed NAT operations */
3000 if (rewrite)
3001 m_copyback(m, off, sizeof(*uh), (caddr_t)uh);
3002
3003 return (PF_PASS);
3004}
3005
3006int
3007pf_test_icmp(struct pf_rule **rm, struct pf_state **sm, int direction,
3255 pool_put(&pf_state_pl, s);
3256 return (PF_DROP);
3257 } else
3258 *sm = s;
3259 }
3260
3261 /* copy back packet headers if we performed NAT operations */
3262 if (rewrite)
3263 m_copyback(m, off, sizeof(*uh), (caddr_t)uh);
3264
3265 return (PF_PASS);
3266}
3267
3268int
3269pf_test_icmp(struct pf_rule **rm, struct pf_state **sm, int direction,
3008 struct ifnet *ifp, struct mbuf *m, int ipoff, int off, void *h,
3270 struct pfi_kif *kif, struct mbuf *m, int off, void *h,
3009 struct pf_pdesc *pd, struct pf_rule **am, struct pf_ruleset **rsm)
3010{
3271 struct pf_pdesc *pd, struct pf_rule **am, struct pf_ruleset **rsm)
3272{
3011 struct pf_rule *nat = NULL, *rdr = NULL;
3273 struct pf_rule *nr = NULL;
3012 struct pf_addr *saddr = pd->src, *daddr = pd->dst;
3274 struct pf_addr *saddr = pd->src, *daddr = pd->dst;
3013 struct pf_addr baddr, naddr;
3014 struct pf_rule *r, *a = NULL;
3015 struct pf_ruleset *ruleset = NULL;
3275 struct pf_rule *r, *a = NULL;
3276 struct pf_ruleset *ruleset = NULL;
3277 struct pf_src_node *nsn = NULL;
3016 u_short reason;
3017 u_int16_t icmpid = 0; /* make the compiler happy */
3018 sa_family_t af = pd->af;
3019 u_int8_t icmptype = 0; /* make the compiler happy */
3020 u_int8_t icmpcode = 0; /* make the compiler happy */
3021 int state_icmp = 0;
3022 struct pf_tag *pftag = NULL;
3023 int tag = -1;

--- 30 unchanged lines hidden (view full) ---

3054 break;
3055#endif /* INET6 */
3056 }
3057
3058 r = TAILQ_FIRST(pf_main_ruleset.rules[PF_RULESET_FILTER].active.ptr);
3059
3060 if (direction == PF_OUT) {
3061 /* check outgoing packet for BINAT/NAT */
3278 u_short reason;
3279 u_int16_t icmpid = 0; /* make the compiler happy */
3280 sa_family_t af = pd->af;
3281 u_int8_t icmptype = 0; /* make the compiler happy */
3282 u_int8_t icmpcode = 0; /* make the compiler happy */
3283 int state_icmp = 0;
3284 struct pf_tag *pftag = NULL;
3285 int tag = -1;

--- 30 unchanged lines hidden (view full) ---

3316 break;
3317#endif /* INET6 */
3318 }
3319
3320 r = TAILQ_FIRST(pf_main_ruleset.rules[PF_RULESET_FILTER].active.ptr);
3321
3322 if (direction == PF_OUT) {
3323 /* check outgoing packet for BINAT/NAT */
3062 if ((nat = pf_get_translation(pd, m, off, PF_OUT, ifp, saddr, 0,
3063 daddr, 0, &naddr, NULL)) != NULL) {
3064 PF_ACPY(&baddr, saddr, af);
3324 if ((nr = pf_get_translation(pd, m, off, PF_OUT, kif, &nsn,
3325 saddr, 0, daddr, 0, &pd->naddr, NULL)) != NULL) {
3326 PF_ACPY(&pd->baddr, saddr, af);
3065 switch (af) {
3066#ifdef INET
3067 case AF_INET:
3068 pf_change_a(&saddr->v4.s_addr, pd->ip_sum,
3327 switch (af) {
3328#ifdef INET
3329 case AF_INET:
3330 pf_change_a(&saddr->v4.s_addr, pd->ip_sum,
3069 naddr.v4.s_addr, 0);
3331 pd->naddr.v4.s_addr, 0);
3070 break;
3071#endif /* INET */
3072#ifdef INET6
3073 case AF_INET6:
3074 pf_change_a6(saddr, &pd->hdr.icmp6->icmp6_cksum,
3332 break;
3333#endif /* INET */
3334#ifdef INET6
3335 case AF_INET6:
3336 pf_change_a6(saddr, &pd->hdr.icmp6->icmp6_cksum,
3075 &naddr, 0);
3337 &pd->naddr, 0);
3076 rewrite++;
3077 break;
3078#endif /* INET6 */
3079 }
3338 rewrite++;
3339 break;
3340#endif /* INET6 */
3341 }
3080 if (nat->natpass)
3342 if (nr->natpass)
3081 r = NULL;
3343 r = NULL;
3344 pd->nat_rule = nr;
3082 }
3083 } else {
3084 /* check incoming packet for BINAT/RDR */
3345 }
3346 } else {
3347 /* check incoming packet for BINAT/RDR */
3085 if ((rdr = pf_get_translation(pd, m, off, PF_IN, ifp, saddr, 0,
3086 daddr, 0, &naddr, NULL)) != NULL) {
3087 PF_ACPY(&baddr, daddr, af);
3348 if ((nr = pf_get_translation(pd, m, off, PF_IN, kif, &nsn,
3349 saddr, 0, daddr, 0, &pd->naddr, NULL)) != NULL) {
3350 PF_ACPY(&pd->baddr, daddr, af);
3088 switch (af) {
3089#ifdef INET
3090 case AF_INET:
3091 pf_change_a(&daddr->v4.s_addr,
3351 switch (af) {
3352#ifdef INET
3353 case AF_INET:
3354 pf_change_a(&daddr->v4.s_addr,
3092 pd->ip_sum, naddr.v4.s_addr, 0);
3355 pd->ip_sum, pd->naddr.v4.s_addr, 0);
3093 break;
3094#endif /* INET */
3095#ifdef INET6
3096 case AF_INET6:
3097 pf_change_a6(daddr, &pd->hdr.icmp6->icmp6_cksum,
3356 break;
3357#endif /* INET */
3358#ifdef INET6
3359 case AF_INET6:
3360 pf_change_a6(daddr, &pd->hdr.icmp6->icmp6_cksum,
3098 &naddr, 0);
3361 &pd->naddr, 0);
3099 rewrite++;
3100 break;
3101#endif /* INET6 */
3102 }
3362 rewrite++;
3363 break;
3364#endif /* INET6 */
3365 }
3103 if (rdr->natpass)
3366 if (nr->natpass)
3104 r = NULL;
3367 r = NULL;
3368 pd->nat_rule = nr;
3105 }
3106 }
3107
3108 while (r != NULL) {
3109 r->evaluations++;
3369 }
3370 }
3371
3372 while (r != NULL) {
3373 r->evaluations++;
3110 if (r->ifp != NULL && ((r->ifp != ifp && !r->ifnot) ||
3111 (r->ifp == ifp && r->ifnot)))
3374 if (r->kif != NULL &&
3375 (r->kif != kif && r->kif != kif->pfik_parent) == !r->ifnot)
3112 r = r->skip[PF_SKIP_IFP].ptr;
3113 else if (r->direction && r->direction != direction)
3114 r = r->skip[PF_SKIP_DIR].ptr;
3115 else if (r->af && r->af != af)
3116 r = r->skip[PF_SKIP_AF].ptr;
3117 else if (r->proto && r->proto != pd->proto)
3118 r = r->skip[PF_SKIP_PROTO].ptr;
3119 else if (PF_MISMATCHAW(&r->src.addr, saddr, af, r->src.not))
3120 r = r->skip[PF_SKIP_SRC_ADDR].ptr;
3121 else if (PF_MISMATCHAW(&r->dst.addr, daddr, af, r->dst.not))
3122 r = r->skip[PF_SKIP_DST_ADDR].ptr;
3123 else if (r->type && r->type != icmptype + 1)
3124 r = TAILQ_NEXT(r, entries);
3125 else if (r->code && r->code != icmpcode + 1)
3126 r = TAILQ_NEXT(r, entries);
3127 else if (r->tos && !(r->tos & pd->tos))
3128 r = TAILQ_NEXT(r, entries);
3129 else if (r->rule_flag & PFRULE_FRAGMENT)
3130 r = TAILQ_NEXT(r, entries);
3376 r = r->skip[PF_SKIP_IFP].ptr;
3377 else if (r->direction && r->direction != direction)
3378 r = r->skip[PF_SKIP_DIR].ptr;
3379 else if (r->af && r->af != af)
3380 r = r->skip[PF_SKIP_AF].ptr;
3381 else if (r->proto && r->proto != pd->proto)
3382 r = r->skip[PF_SKIP_PROTO].ptr;
3383 else if (PF_MISMATCHAW(&r->src.addr, saddr, af, r->src.not))
3384 r = r->skip[PF_SKIP_SRC_ADDR].ptr;
3385 else if (PF_MISMATCHAW(&r->dst.addr, daddr, af, r->dst.not))
3386 r = r->skip[PF_SKIP_DST_ADDR].ptr;
3387 else if (r->type && r->type != icmptype + 1)
3388 r = TAILQ_NEXT(r, entries);
3389 else if (r->code && r->code != icmpcode + 1)
3390 r = TAILQ_NEXT(r, entries);
3391 else if (r->tos && !(r->tos & pd->tos))
3392 r = TAILQ_NEXT(r, entries);
3393 else if (r->rule_flag & PFRULE_FRAGMENT)
3394 r = TAILQ_NEXT(r, entries);
3131 else if (r->match_tag &&
3132 !pf_match_tag(m, r, nat, rdr, pftag, &tag))
3395 else if (r->match_tag && !pf_match_tag(m, r, nr, pftag, &tag))
3133 r = TAILQ_NEXT(r, entries);
3134 else if (r->anchorname[0] && r->anchor == NULL)
3135 r = TAILQ_NEXT(r, entries);
3136 else if (r->os_fingerprint != PF_OSFP_ANY)
3137 r = TAILQ_NEXT(r, entries);
3138 else {
3139 if (r->tag)
3140 tag = r->tag;

--- 11 unchanged lines hidden (view full) ---

3152 if (r == NULL && a != NULL)
3153 PF_STEP_OUT_OF_ANCHOR(r, a, ruleset,
3154 PF_RULESET_FILTER);
3155 }
3156 r = *rm;
3157 a = *am;
3158 ruleset = *rsm;
3159
3396 r = TAILQ_NEXT(r, entries);
3397 else if (r->anchorname[0] && r->anchor == NULL)
3398 r = TAILQ_NEXT(r, entries);
3399 else if (r->os_fingerprint != PF_OSFP_ANY)
3400 r = TAILQ_NEXT(r, entries);
3401 else {
3402 if (r->tag)
3403 tag = r->tag;

--- 11 unchanged lines hidden (view full) ---

3415 if (r == NULL && a != NULL)
3416 PF_STEP_OUT_OF_ANCHOR(r, a, ruleset,
3417 PF_RULESET_FILTER);
3418 }
3419 r = *rm;
3420 a = *am;
3421 ruleset = *rsm;
3422
3160 r->packets++;
3161 r->bytes += pd->tot_len;
3162 if (a != NULL) {
3163 a->packets++;
3164 a->bytes += pd->tot_len;
3165 }
3166 REASON_SET(&reason, PFRES_MATCH);
3167
3168 if (r->log) {
3169#ifdef INET6
3170 if (rewrite)
3171 m_copyback(m, off, sizeof(struct icmp6_hdr),
3172 (caddr_t)pd->hdr.icmp6);
3173#endif /* INET6 */
3423 REASON_SET(&reason, PFRES_MATCH);
3424
3425 if (r->log) {
3426#ifdef INET6
3427 if (rewrite)
3428 m_copyback(m, off, sizeof(struct icmp6_hdr),
3429 (caddr_t)pd->hdr.icmp6);
3430#endif /* INET6 */
3174 PFLOG_PACKET(ifp, h, m, af, direction, reason, r, a, ruleset);
3431 PFLOG_PACKET(kif, h, m, af, direction, reason, r, a, ruleset);
3175 }
3176
3177 if (r->action != PF_PASS)
3178 return (PF_DROP);
3179
3180 if (pf_tag_packet(m, pftag, tag)) {
3181 REASON_SET(&reason, PFRES_MEMORY);
3182 return (PF_DROP);
3183 }
3184
3432 }
3433
3434 if (r->action != PF_PASS)
3435 return (PF_DROP);
3436
3437 if (pf_tag_packet(m, pftag, tag)) {
3438 REASON_SET(&reason, PFRES_MEMORY);
3439 return (PF_DROP);
3440 }
3441
3185 if (!state_icmp && (r->keep_state ||
3186 nat != NULL || rdr != NULL)) {
3442 if (!state_icmp && (r->keep_state || nr != NULL)) {
3187 /* create new state */
3188 struct pf_state *s = NULL;
3443 /* create new state */
3444 struct pf_state *s = NULL;
3445 struct pf_src_node *sn = NULL;
3189
3446
3190 if (!r->max_states || r->states < r->max_states)
3191 s = pool_get(&pf_state_pl, PR_NOWAIT);
3447 /* check maximums */
3448 if (r->max_states && (r->states >= r->max_states))
3449 goto cleanup;
3450 /* src node for flter rule */
3451 if ((r->rule_flag & PFRULE_SRCTRACK ||
3452 r->rpool.opts & PF_POOL_STICKYADDR) &&
3453 pf_insert_src_node(&sn, r, saddr, af) != 0)
3454 goto cleanup;
3455 /* src node for translation rule */
3456 if (nr != NULL && (nr->rpool.opts & PF_POOL_STICKYADDR) &&
3457 ((direction == PF_OUT &&
3458 pf_insert_src_node(&nsn, nr, &pd->baddr, af) != 0) ||
3459 (pf_insert_src_node(&nsn, nr, saddr, af) != 0)))
3460 goto cleanup;
3461 s = pool_get(&pf_state_pl, PR_NOWAIT);
3192 if (s == NULL) {
3462 if (s == NULL) {
3463cleanup:
3464 if (sn != NULL && sn->states == 0 && sn->expire == 0) {
3465 RB_REMOVE(pf_src_tree, &tree_src_tracking, sn);
3466 pf_status.scounters[SCNT_SRC_NODE_REMOVALS]++;
3467 pf_status.src_nodes--;
3468 pool_put(&pf_src_tree_pl, sn);
3469 }
3470 if (nsn != sn && nsn != NULL && nsn->states == 0 &&
3471 nsn->expire == 0) {
3472 RB_REMOVE(pf_src_tree, &tree_src_tracking, nsn);
3473 pf_status.scounters[SCNT_SRC_NODE_REMOVALS]++;
3474 pf_status.src_nodes--;
3475 pool_put(&pf_src_tree_pl, nsn);
3476 }
3193 REASON_SET(&reason, PFRES_MEMORY);
3194 return (PF_DROP);
3195 }
3196 bzero(s, sizeof(*s));
3197 r->states++;
3198 if (a != NULL)
3199 a->states++;
3200 s->rule.ptr = r;
3477 REASON_SET(&reason, PFRES_MEMORY);
3478 return (PF_DROP);
3479 }
3480 bzero(s, sizeof(*s));
3481 r->states++;
3482 if (a != NULL)
3483 a->states++;
3484 s->rule.ptr = r;
3201 if (nat != NULL)
3202 s->nat_rule.ptr = nat;
3203 else
3204 s->nat_rule.ptr = rdr;
3485 s->nat_rule.ptr = nr;
3205 if (s->nat_rule.ptr != NULL)
3206 s->nat_rule.ptr->states++;
3207 s->anchor.ptr = a;
3208 s->allow_opts = r->allow_opts;
3209 s->log = r->log & 2;
3210 s->proto = pd->proto;
3211 s->direction = direction;
3212 s->af = af;
3213 if (direction == PF_OUT) {
3214 PF_ACPY(&s->gwy.addr, saddr, af);
3215 s->gwy.port = icmpid;
3216 PF_ACPY(&s->ext.addr, daddr, af);
3217 s->ext.port = icmpid;
3486 if (s->nat_rule.ptr != NULL)
3487 s->nat_rule.ptr->states++;
3488 s->anchor.ptr = a;
3489 s->allow_opts = r->allow_opts;
3490 s->log = r->log & 2;
3491 s->proto = pd->proto;
3492 s->direction = direction;
3493 s->af = af;
3494 if (direction == PF_OUT) {
3495 PF_ACPY(&s->gwy.addr, saddr, af);
3496 s->gwy.port = icmpid;
3497 PF_ACPY(&s->ext.addr, daddr, af);
3498 s->ext.port = icmpid;
3218 if (nat != NULL)
3219 PF_ACPY(&s->lan.addr, &baddr, af);
3499 if (nr != NULL)
3500 PF_ACPY(&s->lan.addr, &pd->baddr, af);
3220 else
3221 PF_ACPY(&s->lan.addr, &s->gwy.addr, af);
3222 s->lan.port = icmpid;
3223 } else {
3224 PF_ACPY(&s->lan.addr, daddr, af);
3225 s->lan.port = icmpid;
3226 PF_ACPY(&s->ext.addr, saddr, af);
3227 s->ext.port = icmpid;
3501 else
3502 PF_ACPY(&s->lan.addr, &s->gwy.addr, af);
3503 s->lan.port = icmpid;
3504 } else {
3505 PF_ACPY(&s->lan.addr, daddr, af);
3506 s->lan.port = icmpid;
3507 PF_ACPY(&s->ext.addr, saddr, af);
3508 s->ext.port = icmpid;
3228 if (rdr != NULL)
3229 PF_ACPY(&s->gwy.addr, &baddr, af);
3509 if (nr != NULL)
3510 PF_ACPY(&s->gwy.addr, &pd->baddr, af);
3230 else
3231 PF_ACPY(&s->gwy.addr, &s->lan.addr, af);
3232 s->gwy.port = icmpid;
3233 }
3511 else
3512 PF_ACPY(&s->gwy.addr, &s->lan.addr, af);
3513 s->gwy.port = icmpid;
3514 }
3234
3235 s->src.seqlo = 0;
3236 s->src.seqhi = 0;
3237 s->src.seqdiff = 0;
3238 s->src.max_win = 0;
3239 s->src.state = 0;
3240 s->dst.seqlo = 0;
3241 s->dst.seqhi = 0;
3242 s->dst.seqdiff = 0;
3243 s->dst.max_win = 0;
3244 s->dst.state = 0;
3245#ifdef __FreeBSD__
3246 s->creation = time_second;
3247 s->expire = time_second;
3248#else
3249 s->creation = time.tv_sec;
3250 s->expire = time.tv_sec;
3251#endif
3252 s->timeout = PFTM_ICMP_FIRST_PACKET;
3515#ifdef __FreeBSD__
3516 s->creation = time_second;
3517 s->expire = time_second;
3518#else
3519 s->creation = time.tv_sec;
3520 s->expire = time.tv_sec;
3521#endif
3522 s->timeout = PFTM_ICMP_FIRST_PACKET;
3253 s->packets[0] = 1;
3254 s->bytes[0] = pd->tot_len;
3255 pf_set_rt_ifp(s, saddr);
3523 pf_set_rt_ifp(s, saddr);
3256 if (pf_insert_state(s)) {
3524 if (sn != NULL) {
3525 s->src_node = sn;
3526 s->src_node->states++;
3527 }
3528 if (nsn != NULL) {
3529 PF_ACPY(&nsn->raddr, &pd->naddr, af);
3530 s->nat_src_node = nsn;
3531 s->nat_src_node->states++;
3532 }
3533 if (pf_insert_state(BOUND_IFACE(r, kif), s)) {
3257 REASON_SET(&reason, PFRES_MEMORY);
3534 REASON_SET(&reason, PFRES_MEMORY);
3535 pf_src_tree_remove_state(s);
3258 pool_put(&pf_state_pl, s);
3259 return (PF_DROP);
3260 } else
3261 *sm = s;
3262 }
3263
3264#ifdef INET6
3265 /* copy back packet headers if we performed IPv6 NAT operations */
3266 if (rewrite)
3267 m_copyback(m, off, sizeof(struct icmp6_hdr),
3268 (caddr_t)pd->hdr.icmp6);
3269#endif /* INET6 */
3270
3271 return (PF_PASS);
3272}
3273
3274int
3275pf_test_other(struct pf_rule **rm, struct pf_state **sm, int direction,
3536 pool_put(&pf_state_pl, s);
3537 return (PF_DROP);
3538 } else
3539 *sm = s;
3540 }
3541
3542#ifdef INET6
3543 /* copy back packet headers if we performed IPv6 NAT operations */
3544 if (rewrite)
3545 m_copyback(m, off, sizeof(struct icmp6_hdr),
3546 (caddr_t)pd->hdr.icmp6);
3547#endif /* INET6 */
3548
3549 return (PF_PASS);
3550}
3551
3552int
3553pf_test_other(struct pf_rule **rm, struct pf_state **sm, int direction,
3276 struct ifnet *ifp, struct mbuf *m, int off, void *h, struct pf_pdesc *pd,
3554 struct pfi_kif *kif, struct mbuf *m, int off, void *h, struct pf_pdesc *pd,
3277 struct pf_rule **am, struct pf_ruleset **rsm)
3278{
3555 struct pf_rule **am, struct pf_ruleset **rsm)
3556{
3279 struct pf_rule *nat = NULL, *rdr = NULL;
3557 struct pf_rule *nr = NULL;
3280 struct pf_rule *r, *a = NULL;
3281 struct pf_ruleset *ruleset = NULL;
3558 struct pf_rule *r, *a = NULL;
3559 struct pf_ruleset *ruleset = NULL;
3560 struct pf_src_node *nsn = NULL;
3282 struct pf_addr *saddr = pd->src, *daddr = pd->dst;
3561 struct pf_addr *saddr = pd->src, *daddr = pd->dst;
3283 struct pf_addr baddr, naddr;
3284 sa_family_t af = pd->af;
3285 u_short reason;
3286 struct pf_tag *pftag = NULL;
3287 int tag = -1;
3288
3289 r = TAILQ_FIRST(pf_main_ruleset.rules[PF_RULESET_FILTER].active.ptr);
3290
3291 if (direction == PF_OUT) {
3292 /* check outgoing packet for BINAT/NAT */
3562 sa_family_t af = pd->af;
3563 u_short reason;
3564 struct pf_tag *pftag = NULL;
3565 int tag = -1;
3566
3567 r = TAILQ_FIRST(pf_main_ruleset.rules[PF_RULESET_FILTER].active.ptr);
3568
3569 if (direction == PF_OUT) {
3570 /* check outgoing packet for BINAT/NAT */
3293 if ((nat = pf_get_translation(pd, m, off, PF_OUT, ifp, saddr, 0,
3294 daddr, 0, &naddr, NULL)) != NULL) {
3295 PF_ACPY(&baddr, saddr, af);
3571 if ((nr = pf_get_translation(pd, m, off, PF_OUT, kif, &nsn,
3572 saddr, 0, daddr, 0, &pd->naddr, NULL)) != NULL) {
3573 PF_ACPY(&pd->baddr, saddr, af);
3296 switch (af) {
3297#ifdef INET
3298 case AF_INET:
3299 pf_change_a(&saddr->v4.s_addr, pd->ip_sum,
3574 switch (af) {
3575#ifdef INET
3576 case AF_INET:
3577 pf_change_a(&saddr->v4.s_addr, pd->ip_sum,
3300 naddr.v4.s_addr, 0);
3578 pd->naddr.v4.s_addr, 0);
3301 break;
3302#endif /* INET */
3303#ifdef INET6
3304 case AF_INET6:
3579 break;
3580#endif /* INET */
3581#ifdef INET6
3582 case AF_INET6:
3305 PF_ACPY(saddr, &naddr, af);
3583 PF_ACPY(saddr, &pd->naddr, af);
3306 break;
3307#endif /* INET6 */
3308 }
3584 break;
3585#endif /* INET6 */
3586 }
3309 if (nat->natpass)
3587 if (nr->natpass)
3310 r = NULL;
3588 r = NULL;
3589 pd->nat_rule = nr;
3311 }
3312 } else {
3313 /* check incoming packet for BINAT/RDR */
3590 }
3591 } else {
3592 /* check incoming packet for BINAT/RDR */
3314 if ((rdr = pf_get_translation(pd, m, off, PF_IN, ifp, saddr, 0,
3315 daddr, 0, &naddr, NULL)) != NULL) {
3316 PF_ACPY(&baddr, daddr, af);
3593 if ((nr = pf_get_translation(pd, m, off, PF_IN, kif, &nsn,
3594 saddr, 0, daddr, 0, &pd->naddr, NULL)) != NULL) {
3595 PF_ACPY(&pd->baddr, daddr, af);
3317 switch (af) {
3318#ifdef INET
3319 case AF_INET:
3320 pf_change_a(&daddr->v4.s_addr,
3596 switch (af) {
3597#ifdef INET
3598 case AF_INET:
3599 pf_change_a(&daddr->v4.s_addr,
3321 pd->ip_sum, naddr.v4.s_addr, 0);
3600 pd->ip_sum, pd->naddr.v4.s_addr, 0);
3322 break;
3323#endif /* INET */
3324#ifdef INET6
3325 case AF_INET6:
3601 break;
3602#endif /* INET */
3603#ifdef INET6
3604 case AF_INET6:
3326 PF_ACPY(daddr, &naddr, af);
3605 PF_ACPY(daddr, &pd->naddr, af);
3327 break;
3328#endif /* INET6 */
3329 }
3606 break;
3607#endif /* INET6 */
3608 }
3330 if (rdr->natpass)
3609 if (nr->natpass)
3331 r = NULL;
3610 r = NULL;
3611 pd->nat_rule = nr;
3332 }
3333 }
3334
3335 while (r != NULL) {
3336 r->evaluations++;
3612 }
3613 }
3614
3615 while (r != NULL) {
3616 r->evaluations++;
3337 if (r->ifp != NULL && ((r->ifp != ifp && !r->ifnot) ||
3338 (r->ifp == ifp && r->ifnot)))
3617 if (r->kif != NULL &&
3618 (r->kif != kif && r->kif != kif->pfik_parent) == !r->ifnot)
3339 r = r->skip[PF_SKIP_IFP].ptr;
3340 else if (r->direction && r->direction != direction)
3341 r = r->skip[PF_SKIP_DIR].ptr;
3342 else if (r->af && r->af != af)
3343 r = r->skip[PF_SKIP_AF].ptr;
3344 else if (r->proto && r->proto != pd->proto)
3345 r = r->skip[PF_SKIP_PROTO].ptr;
3346 else if (PF_MISMATCHAW(&r->src.addr, pd->src, af, r->src.not))
3347 r = r->skip[PF_SKIP_SRC_ADDR].ptr;
3348 else if (PF_MISMATCHAW(&r->dst.addr, pd->dst, af, r->dst.not))
3349 r = r->skip[PF_SKIP_DST_ADDR].ptr;
3350 else if (r->tos && !(r->tos & pd->tos))
3351 r = TAILQ_NEXT(r, entries);
3352 else if (r->rule_flag & PFRULE_FRAGMENT)
3353 r = TAILQ_NEXT(r, entries);
3619 r = r->skip[PF_SKIP_IFP].ptr;
3620 else if (r->direction && r->direction != direction)
3621 r = r->skip[PF_SKIP_DIR].ptr;
3622 else if (r->af && r->af != af)
3623 r = r->skip[PF_SKIP_AF].ptr;
3624 else if (r->proto && r->proto != pd->proto)
3625 r = r->skip[PF_SKIP_PROTO].ptr;
3626 else if (PF_MISMATCHAW(&r->src.addr, pd->src, af, r->src.not))
3627 r = r->skip[PF_SKIP_SRC_ADDR].ptr;
3628 else if (PF_MISMATCHAW(&r->dst.addr, pd->dst, af, r->dst.not))
3629 r = r->skip[PF_SKIP_DST_ADDR].ptr;
3630 else if (r->tos && !(r->tos & pd->tos))
3631 r = TAILQ_NEXT(r, entries);
3632 else if (r->rule_flag & PFRULE_FRAGMENT)
3633 r = TAILQ_NEXT(r, entries);
3354 else if (r->match_tag &&
3355 !pf_match_tag(m, r, nat, rdr, pftag, &tag))
3634 else if (r->match_tag && !pf_match_tag(m, r, nr, pftag, &tag))
3356 r = TAILQ_NEXT(r, entries);
3357 else if (r->anchorname[0] && r->anchor == NULL)
3358 r = TAILQ_NEXT(r, entries);
3359 else if (r->os_fingerprint != PF_OSFP_ANY)
3360 r = TAILQ_NEXT(r, entries);
3361 else {
3362 if (r->tag)
3363 tag = r->tag;

--- 11 unchanged lines hidden (view full) ---

3375 if (r == NULL && a != NULL)
3376 PF_STEP_OUT_OF_ANCHOR(r, a, ruleset,
3377 PF_RULESET_FILTER);
3378 }
3379 r = *rm;
3380 a = *am;
3381 ruleset = *rsm;
3382
3635 r = TAILQ_NEXT(r, entries);
3636 else if (r->anchorname[0] && r->anchor == NULL)
3637 r = TAILQ_NEXT(r, entries);
3638 else if (r->os_fingerprint != PF_OSFP_ANY)
3639 r = TAILQ_NEXT(r, entries);
3640 else {
3641 if (r->tag)
3642 tag = r->tag;

--- 11 unchanged lines hidden (view full) ---

3654 if (r == NULL && a != NULL)
3655 PF_STEP_OUT_OF_ANCHOR(r, a, ruleset,
3656 PF_RULESET_FILTER);
3657 }
3658 r = *rm;
3659 a = *am;
3660 ruleset = *rsm;
3661
3383 r->packets++;
3384 r->bytes += pd->tot_len;
3385 if (a != NULL) {
3386 a->packets++;
3387 a->bytes += pd->tot_len;
3388 }
3389 REASON_SET(&reason, PFRES_MATCH);
3662 REASON_SET(&reason, PFRES_MATCH);
3663
3390 if (r->log)
3664 if (r->log)
3391 PFLOG_PACKET(ifp, h, m, af, direction, reason, r, a, ruleset);
3665 PFLOG_PACKET(kif, h, m, af, direction, reason, r, a, ruleset);
3392
3393 if ((r->action == PF_DROP) &&
3394 ((r->rule_flag & PFRULE_RETURNICMP) ||
3395 (r->rule_flag & PFRULE_RETURN))) {
3396 struct pf_addr *a = NULL;
3397
3666
3667 if ((r->action == PF_DROP) &&
3668 ((r->rule_flag & PFRULE_RETURNICMP) ||
3669 (r->rule_flag & PFRULE_RETURN))) {
3670 struct pf_addr *a = NULL;
3671
3398 if (nat != NULL)
3399 a = saddr;
3400 else if (rdr != NULL)
3401 a = daddr;
3672 if (nr != NULL) {
3673 if (direction == PF_OUT)
3674 a = saddr;
3675 else
3676 a = daddr;
3677 }
3402 if (a != NULL) {
3403 switch (af) {
3404#ifdef INET
3405 case AF_INET:
3406 pf_change_a(&a->v4.s_addr, pd->ip_sum,
3678 if (a != NULL) {
3679 switch (af) {
3680#ifdef INET
3681 case AF_INET:
3682 pf_change_a(&a->v4.s_addr, pd->ip_sum,
3407 baddr.v4.s_addr, 0);
3683 pd->baddr.v4.s_addr, 0);
3408 break;
3409#endif /* INET */
3410#ifdef INET6
3411 case AF_INET6:
3684 break;
3685#endif /* INET */
3686#ifdef INET6
3687 case AF_INET6:
3412 PF_ACPY(a, &baddr, af);
3688 PF_ACPY(a, &pd->baddr, af);
3413 break;
3414#endif /* INET6 */
3415 }
3416 }
3417 if ((af == AF_INET) && r->return_icmp)
3418 pf_send_icmp(m, r->return_icmp >> 8,
3419 r->return_icmp & 255, af, r);
3420 else if ((af == AF_INET6) && r->return_icmp6)

--- 4 unchanged lines hidden (view full) ---

3425 if (r->action != PF_PASS)
3426 return (PF_DROP);
3427
3428 if (pf_tag_packet(m, pftag, tag)) {
3429 REASON_SET(&reason, PFRES_MEMORY);
3430 return (PF_DROP);
3431 }
3432
3689 break;
3690#endif /* INET6 */
3691 }
3692 }
3693 if ((af == AF_INET) && r->return_icmp)
3694 pf_send_icmp(m, r->return_icmp >> 8,
3695 r->return_icmp & 255, af, r);
3696 else if ((af == AF_INET6) && r->return_icmp6)

--- 4 unchanged lines hidden (view full) ---

3701 if (r->action != PF_PASS)
3702 return (PF_DROP);
3703
3704 if (pf_tag_packet(m, pftag, tag)) {
3705 REASON_SET(&reason, PFRES_MEMORY);
3706 return (PF_DROP);
3707 }
3708
3433 if (r->keep_state || nat != NULL || rdr != NULL) {
3709 if (r->keep_state || nr != NULL) {
3434 /* create new state */
3435 struct pf_state *s = NULL;
3710 /* create new state */
3711 struct pf_state *s = NULL;
3712 struct pf_src_node *sn = NULL;
3436
3713
3437 if (!r->max_states || r->states < r->max_states)
3438 s = pool_get(&pf_state_pl, PR_NOWAIT);
3714 /* check maximums */
3715 if (r->max_states && (r->states >= r->max_states))
3716 goto cleanup;
3717 /* src node for flter rule */
3718 if ((r->rule_flag & PFRULE_SRCTRACK ||
3719 r->rpool.opts & PF_POOL_STICKYADDR) &&
3720 pf_insert_src_node(&sn, r, saddr, af) != 0)
3721 goto cleanup;
3722 /* src node for translation rule */
3723 if (nr != NULL && (nr->rpool.opts & PF_POOL_STICKYADDR) &&
3724 ((direction == PF_OUT &&
3725 pf_insert_src_node(&nsn, nr, &pd->baddr, af) != 0) ||
3726 (pf_insert_src_node(&nsn, nr, saddr, af) != 0)))
3727 goto cleanup;
3728 s = pool_get(&pf_state_pl, PR_NOWAIT);
3439 if (s == NULL) {
3729 if (s == NULL) {
3730cleanup:
3731 if (sn != NULL && sn->states == 0 && sn->expire == 0) {
3732 RB_REMOVE(pf_src_tree, &tree_src_tracking, sn);
3733 pf_status.scounters[SCNT_SRC_NODE_REMOVALS]++;
3734 pf_status.src_nodes--;
3735 pool_put(&pf_src_tree_pl, sn);
3736 }
3737 if (nsn != sn && nsn != NULL && nsn->states == 0 &&
3738 nsn->expire == 0) {
3739 RB_REMOVE(pf_src_tree, &tree_src_tracking, nsn);
3740 pf_status.scounters[SCNT_SRC_NODE_REMOVALS]++;
3741 pf_status.src_nodes--;
3742 pool_put(&pf_src_tree_pl, nsn);
3743 }
3440 REASON_SET(&reason, PFRES_MEMORY);
3441 return (PF_DROP);
3442 }
3443 bzero(s, sizeof(*s));
3444 r->states++;
3445 if (a != NULL)
3446 a->states++;
3447 s->rule.ptr = r;
3744 REASON_SET(&reason, PFRES_MEMORY);
3745 return (PF_DROP);
3746 }
3747 bzero(s, sizeof(*s));
3748 r->states++;
3749 if (a != NULL)
3750 a->states++;
3751 s->rule.ptr = r;
3448 if (nat != NULL)
3449 s->nat_rule.ptr = nat;
3450 else
3451 s->nat_rule.ptr = rdr;
3752 s->nat_rule.ptr = nr;
3452 if (s->nat_rule.ptr != NULL)
3453 s->nat_rule.ptr->states++;
3454 s->anchor.ptr = a;
3455 s->allow_opts = r->allow_opts;
3456 s->log = r->log & 2;
3457 s->proto = pd->proto;
3458 s->direction = direction;
3459 s->af = af;
3460 if (direction == PF_OUT) {
3461 PF_ACPY(&s->gwy.addr, saddr, af);
3753 if (s->nat_rule.ptr != NULL)
3754 s->nat_rule.ptr->states++;
3755 s->anchor.ptr = a;
3756 s->allow_opts = r->allow_opts;
3757 s->log = r->log & 2;
3758 s->proto = pd->proto;
3759 s->direction = direction;
3760 s->af = af;
3761 if (direction == PF_OUT) {
3762 PF_ACPY(&s->gwy.addr, saddr, af);
3462 s->gwy.port = 0;
3463 PF_ACPY(&s->ext.addr, daddr, af);
3763 PF_ACPY(&s->ext.addr, daddr, af);
3464 s->ext.port = 0;
3465 if (nat != NULL)
3466 PF_ACPY(&s->lan.addr, &baddr, af);
3764 if (nr != NULL)
3765 PF_ACPY(&s->lan.addr, &pd->baddr, af);
3467 else
3468 PF_ACPY(&s->lan.addr, &s->gwy.addr, af);
3766 else
3767 PF_ACPY(&s->lan.addr, &s->gwy.addr, af);
3469 s->lan.port = 0;
3470 } else {
3471 PF_ACPY(&s->lan.addr, daddr, af);
3768 } else {
3769 PF_ACPY(&s->lan.addr, daddr, af);
3472 s->lan.port = 0;
3473 PF_ACPY(&s->ext.addr, saddr, af);
3770 PF_ACPY(&s->ext.addr, saddr, af);
3474 s->ext.port = 0;
3475 if (rdr != NULL)
3476 PF_ACPY(&s->gwy.addr, &baddr, af);
3771 if (nr != NULL)
3772 PF_ACPY(&s->gwy.addr, &pd->baddr, af);
3477 else
3478 PF_ACPY(&s->gwy.addr, &s->lan.addr, af);
3773 else
3774 PF_ACPY(&s->gwy.addr, &s->lan.addr, af);
3479 s->gwy.port = 0;
3480 }
3775 }
3481 s->src.seqlo = 0;
3482 s->src.seqhi = 0;
3483 s->src.seqdiff = 0;
3484 s->src.max_win = 0;
3485 s->src.state = PFOTHERS_SINGLE;
3776 s->src.state = PFOTHERS_SINGLE;
3486 s->dst.seqlo = 0;
3487 s->dst.seqhi = 0;
3488 s->dst.seqdiff = 0;
3489 s->dst.max_win = 0;
3490 s->dst.state = PFOTHERS_NO_TRAFFIC;
3491#ifdef __FreeBSD__
3492 s->creation = time_second;
3493 s->expire = time_second;
3494#else
3495 s->creation = time.tv_sec;
3496 s->expire = time.tv_sec;
3497#endif
3498 s->timeout = PFTM_OTHER_FIRST_PACKET;
3777 s->dst.state = PFOTHERS_NO_TRAFFIC;
3778#ifdef __FreeBSD__
3779 s->creation = time_second;
3780 s->expire = time_second;
3781#else
3782 s->creation = time.tv_sec;
3783 s->expire = time.tv_sec;
3784#endif
3785 s->timeout = PFTM_OTHER_FIRST_PACKET;
3499 s->packets[0] = 1;
3500 s->bytes[0] = pd->tot_len;
3501 pf_set_rt_ifp(s, saddr);
3786 pf_set_rt_ifp(s, saddr);
3502 if (pf_insert_state(s)) {
3787 if (sn != NULL) {
3788 s->src_node = sn;
3789 s->src_node->states++;
3790 }
3791 if (nsn != NULL) {
3792 PF_ACPY(&nsn->raddr, &pd->naddr, af);
3793 s->nat_src_node = nsn;
3794 s->nat_src_node->states++;
3795 }
3796 if (pf_insert_state(BOUND_IFACE(r, kif), s)) {
3503 REASON_SET(&reason, PFRES_MEMORY);
3797 REASON_SET(&reason, PFRES_MEMORY);
3504 if (r->log)
3505 PFLOG_PACKET(ifp, h, m, af, direction, reason,
3506 r, a, ruleset);
3798 pf_src_tree_remove_state(s);
3507 pool_put(&pf_state_pl, s);
3508 return (PF_DROP);
3509 } else
3510 *sm = s;
3511 }
3512
3513 return (PF_PASS);
3514}
3515
3516int
3799 pool_put(&pf_state_pl, s);
3800 return (PF_DROP);
3801 } else
3802 *sm = s;
3803 }
3804
3805 return (PF_PASS);
3806}
3807
3808int
3517pf_test_fragment(struct pf_rule **rm, int direction, struct ifnet *ifp,
3809pf_test_fragment(struct pf_rule **rm, int direction, struct pfi_kif *kif,
3518 struct mbuf *m, void *h, struct pf_pdesc *pd, struct pf_rule **am,
3519 struct pf_ruleset **rsm)
3520{
3521 struct pf_rule *r, *a = NULL;
3522 struct pf_ruleset *ruleset = NULL;
3523 sa_family_t af = pd->af;
3524 u_short reason;
3525 struct pf_tag *pftag = NULL;
3526 int tag = -1;
3527
3528 r = TAILQ_FIRST(pf_main_ruleset.rules[PF_RULESET_FILTER].active.ptr);
3529 while (r != NULL) {
3530 r->evaluations++;
3810 struct mbuf *m, void *h, struct pf_pdesc *pd, struct pf_rule **am,
3811 struct pf_ruleset **rsm)
3812{
3813 struct pf_rule *r, *a = NULL;
3814 struct pf_ruleset *ruleset = NULL;
3815 sa_family_t af = pd->af;
3816 u_short reason;
3817 struct pf_tag *pftag = NULL;
3818 int tag = -1;
3819
3820 r = TAILQ_FIRST(pf_main_ruleset.rules[PF_RULESET_FILTER].active.ptr);
3821 while (r != NULL) {
3822 r->evaluations++;
3531 if (r->ifp != NULL && ((r->ifp != ifp && !r->ifnot) ||
3532 (r->ifp == ifp && r->ifnot)))
3823 if (r->kif != NULL &&
3824 (r->kif != kif && r->kif != kif->pfik_parent) == !r->ifnot)
3533 r = r->skip[PF_SKIP_IFP].ptr;
3534 else if (r->direction && r->direction != direction)
3535 r = r->skip[PF_SKIP_DIR].ptr;
3536 else if (r->af && r->af != af)
3537 r = r->skip[PF_SKIP_AF].ptr;
3538 else if (r->proto && r->proto != pd->proto)
3539 r = r->skip[PF_SKIP_PROTO].ptr;
3540 else if (PF_MISMATCHAW(&r->src.addr, pd->src, af, r->src.not))
3541 r = r->skip[PF_SKIP_SRC_ADDR].ptr;
3542 else if (PF_MISMATCHAW(&r->dst.addr, pd->dst, af, r->dst.not))
3543 r = r->skip[PF_SKIP_DST_ADDR].ptr;
3544 else if (r->tos && !(r->tos & pd->tos))
3545 r = TAILQ_NEXT(r, entries);
3546 else if (r->src.port_op || r->dst.port_op ||
3547 r->flagset || r->type || r->code ||
3548 r->os_fingerprint != PF_OSFP_ANY)
3549 r = TAILQ_NEXT(r, entries);
3825 r = r->skip[PF_SKIP_IFP].ptr;
3826 else if (r->direction && r->direction != direction)
3827 r = r->skip[PF_SKIP_DIR].ptr;
3828 else if (r->af && r->af != af)
3829 r = r->skip[PF_SKIP_AF].ptr;
3830 else if (r->proto && r->proto != pd->proto)
3831 r = r->skip[PF_SKIP_PROTO].ptr;
3832 else if (PF_MISMATCHAW(&r->src.addr, pd->src, af, r->src.not))
3833 r = r->skip[PF_SKIP_SRC_ADDR].ptr;
3834 else if (PF_MISMATCHAW(&r->dst.addr, pd->dst, af, r->dst.not))
3835 r = r->skip[PF_SKIP_DST_ADDR].ptr;
3836 else if (r->tos && !(r->tos & pd->tos))
3837 r = TAILQ_NEXT(r, entries);
3838 else if (r->src.port_op || r->dst.port_op ||
3839 r->flagset || r->type || r->code ||
3840 r->os_fingerprint != PF_OSFP_ANY)
3841 r = TAILQ_NEXT(r, entries);
3550 else if (r->match_tag &&
3551 !pf_match_tag(m, r, NULL, NULL, pftag, &tag))
3842 else if (r->match_tag && !pf_match_tag(m, r, NULL, pftag, &tag))
3552 r = TAILQ_NEXT(r, entries);
3553 else if (r->anchorname[0] && r->anchor == NULL)
3554 r = TAILQ_NEXT(r, entries);
3555 else {
3556 if (r->anchor == NULL) {
3557 *rm = r;
3558 *am = a;
3559 *rsm = ruleset;

--- 7 unchanged lines hidden (view full) ---

3567 if (r == NULL && a != NULL)
3568 PF_STEP_OUT_OF_ANCHOR(r, a, ruleset,
3569 PF_RULESET_FILTER);
3570 }
3571 r = *rm;
3572 a = *am;
3573 ruleset = *rsm;
3574
3843 r = TAILQ_NEXT(r, entries);
3844 else if (r->anchorname[0] && r->anchor == NULL)
3845 r = TAILQ_NEXT(r, entries);
3846 else {
3847 if (r->anchor == NULL) {
3848 *rm = r;
3849 *am = a;
3850 *rsm = ruleset;

--- 7 unchanged lines hidden (view full) ---

3858 if (r == NULL && a != NULL)
3859 PF_STEP_OUT_OF_ANCHOR(r, a, ruleset,
3860 PF_RULESET_FILTER);
3861 }
3862 r = *rm;
3863 a = *am;
3864 ruleset = *rsm;
3865
3575 r->packets++;
3576 r->bytes += pd->tot_len;
3577 if (a != NULL) {
3578 a->packets++;
3579 a->bytes += pd->tot_len;
3580 }
3581 REASON_SET(&reason, PFRES_MATCH);
3866 REASON_SET(&reason, PFRES_MATCH);
3867
3582 if (r->log)
3868 if (r->log)
3583 PFLOG_PACKET(ifp, h, m, af, direction, reason, r, a, ruleset);
3869 PFLOG_PACKET(kif, h, m, af, direction, reason, r, a, ruleset);
3584
3585 if (r->action != PF_PASS)
3586 return (PF_DROP);
3587
3588 if (pf_tag_packet(m, pftag, tag)) {
3589 REASON_SET(&reason, PFRES_MEMORY);
3590 return (PF_DROP);
3591 }
3592
3593 return (PF_PASS);
3594}
3595
3596int
3870
3871 if (r->action != PF_PASS)
3872 return (PF_DROP);
3873
3874 if (pf_tag_packet(m, pftag, tag)) {
3875 REASON_SET(&reason, PFRES_MEMORY);
3876 return (PF_DROP);
3877 }
3878
3879 return (PF_PASS);
3880}
3881
3882int
3597pf_test_state_tcp(struct pf_state **state, int direction, struct ifnet *ifp,
3598 struct mbuf *m, int ipoff, int off, void *h, struct pf_pdesc *pd,
3883pf_test_state_tcp(struct pf_state **state, int direction, struct pfi_kif *kif,
3884 struct mbuf *m, int off, void *h, struct pf_pdesc *pd,
3599 u_short *reason)
3600{
3885 u_short *reason)
3886{
3601 struct pf_tree_node key;
3887 struct pf_state key;
3602 struct tcphdr *th = pd->hdr.tcp;
3603 u_int16_t win = ntohs(th->th_win);
3604 u_int32_t ack, end, seq;
3605 u_int8_t sws, dws;
3888 struct tcphdr *th = pd->hdr.tcp;
3889 u_int16_t win = ntohs(th->th_win);
3890 u_int32_t ack, end, seq;
3891 u_int8_t sws, dws;
3606 int ackskew, dirndx;
3892 int ackskew;
3607 int copyback = 0;
3608 struct pf_state_peer *src, *dst;
3609
3610 key.af = pd->af;
3611 key.proto = IPPROTO_TCP;
3893 int copyback = 0;
3894 struct pf_state_peer *src, *dst;
3895
3896 key.af = pd->af;
3897 key.proto = IPPROTO_TCP;
3612 PF_ACPY(&key.addr[0], pd->src, key.af);
3613 PF_ACPY(&key.addr[1], pd->dst, key.af);
3614 key.port[0] = th->th_sport;
3615 key.port[1] = th->th_dport;
3898 if (direction == PF_IN) {
3899 PF_ACPY(&key.ext.addr, pd->src, key.af);
3900 PF_ACPY(&key.gwy.addr, pd->dst, key.af);
3901 key.ext.port = th->th_sport;
3902 key.gwy.port = th->th_dport;
3903 } else {
3904 PF_ACPY(&key.lan.addr, pd->src, key.af);
3905 PF_ACPY(&key.ext.addr, pd->dst, key.af);
3906 key.lan.port = th->th_sport;
3907 key.ext.port = th->th_dport;
3908 }
3616
3617 STATE_LOOKUP();
3618
3619 if (direction == (*state)->direction) {
3620 src = &(*state)->src;
3621 dst = &(*state)->dst;
3909
3910 STATE_LOOKUP();
3911
3912 if (direction == (*state)->direction) {
3913 src = &(*state)->src;
3914 dst = &(*state)->dst;
3622 dirndx = 0;
3623 } else {
3624 src = &(*state)->dst;
3625 dst = &(*state)->src;
3915 } else {
3916 src = &(*state)->dst;
3917 dst = &(*state)->src;
3626 dirndx = 1;
3627 }
3628
3629 if ((*state)->src.state == PF_TCPS_PROXY_SRC) {
3630 if (direction != (*state)->direction)
3631 return (PF_SYNPROXY_DROP);
3632 if (th->th_flags & TH_SYN) {
3633 if (ntohl(th->th_seq) != (*state)->src.seqlo)
3634 return (PF_DROP);

--- 24 unchanged lines hidden (view full) ---

3659 (ntohl(th->th_ack) != (*state)->src.seqhi + 1) ||
3660 (ntohl(th->th_seq) != (*state)->src.seqlo + 1))
3661 return (PF_DROP);
3662 (*state)->src.max_win = MAX(ntohs(th->th_win), 1);
3663 if ((*state)->dst.seqhi == 1)
3664 (*state)->dst.seqhi = arc4random();
3665 pf_send_tcp((*state)->rule.ptr, pd->af, &src->addr,
3666 &dst->addr, src->port, dst->port,
3918 }
3919
3920 if ((*state)->src.state == PF_TCPS_PROXY_SRC) {
3921 if (direction != (*state)->direction)
3922 return (PF_SYNPROXY_DROP);
3923 if (th->th_flags & TH_SYN) {
3924 if (ntohl(th->th_seq) != (*state)->src.seqlo)
3925 return (PF_DROP);

--- 24 unchanged lines hidden (view full) ---

3950 (ntohl(th->th_ack) != (*state)->src.seqhi + 1) ||
3951 (ntohl(th->th_seq) != (*state)->src.seqlo + 1))
3952 return (PF_DROP);
3953 (*state)->src.max_win = MAX(ntohs(th->th_win), 1);
3954 if ((*state)->dst.seqhi == 1)
3955 (*state)->dst.seqhi = arc4random();
3956 pf_send_tcp((*state)->rule.ptr, pd->af, &src->addr,
3957 &dst->addr, src->port, dst->port,
3667 (*state)->dst.seqhi, 0, TH_SYN, 0, (*state)->src.mss, 0);
3958 (*state)->dst.seqhi, 0, TH_SYN, 0,
3959 (*state)->src.mss, 0);
3668 return (PF_SYNPROXY_DROP);
3669 } else if (((th->th_flags & (TH_SYN|TH_ACK)) !=
3670 (TH_SYN|TH_ACK)) ||
3671 (ntohl(th->th_ack) != (*state)->dst.seqhi + 1))
3672 return (PF_DROP);
3673 else {
3674 (*state)->dst.max_win = MAX(ntohs(th->th_win), 1);
3675 (*state)->dst.seqlo = ntohl(th->th_seq);

--- 140 unchanged lines hidden (view full) ---

3816 /* Last octet inside other's window space */
3817 SEQ_GEQ(seq, src->seqlo - (dst->max_win << dws)) &&
3818 /* Retrans: not more than one window back */
3819 (ackskew >= -MAXACKWINDOW) &&
3820 /* Acking not more than one reassembled fragment backwards */
3821 (ackskew <= (MAXACKWINDOW << sws))) {
3822 /* Acking not more than one window forward */
3823
3960 return (PF_SYNPROXY_DROP);
3961 } else if (((th->th_flags & (TH_SYN|TH_ACK)) !=
3962 (TH_SYN|TH_ACK)) ||
3963 (ntohl(th->th_ack) != (*state)->dst.seqhi + 1))
3964 return (PF_DROP);
3965 else {
3966 (*state)->dst.max_win = MAX(ntohs(th->th_win), 1);
3967 (*state)->dst.seqlo = ntohl(th->th_seq);

--- 140 unchanged lines hidden (view full) ---

4108 /* Last octet inside other's window space */
4109 SEQ_GEQ(seq, src->seqlo - (dst->max_win << dws)) &&
4110 /* Retrans: not more than one window back */
4111 (ackskew >= -MAXACKWINDOW) &&
4112 /* Acking not more than one reassembled fragment backwards */
4113 (ackskew <= (MAXACKWINDOW << sws))) {
4114 /* Acking not more than one window forward */
4115
3824 (*state)->packets[dirndx]++;
3825 (*state)->bytes[dirndx] += pd->tot_len;
3826
3827 /* update max window */
3828 if (src->max_win < win)
3829 src->max_win = win;
3830 /* synchronize sequencing */
3831 if (SEQ_GT(end, src->seqlo))
3832 src->seqlo = end;
3833 /* slide the window of what the other end can send */
3834 if (SEQ_GEQ(ack + (win << sws), dst->seqhi))

--- 72 unchanged lines hidden (view full) ---

3907 printf("pf: loose state match: ");
3908 pf_print_state(*state);
3909 pf_print_flags(th->th_flags);
3910 printf(" seq=%u ack=%u len=%u ackskew=%d pkts=%d:%d\n",
3911 seq, ack, pd->p_len, ackskew,
3912 (*state)->packets[0], (*state)->packets[1]);
3913 }
3914
4116 /* update max window */
4117 if (src->max_win < win)
4118 src->max_win = win;
4119 /* synchronize sequencing */
4120 if (SEQ_GT(end, src->seqlo))
4121 src->seqlo = end;
4122 /* slide the window of what the other end can send */
4123 if (SEQ_GEQ(ack + (win << sws), dst->seqhi))

--- 72 unchanged lines hidden (view full) ---

4196 printf("pf: loose state match: ");
4197 pf_print_state(*state);
4198 pf_print_flags(th->th_flags);
4199 printf(" seq=%u ack=%u len=%u ackskew=%d pkts=%d:%d\n",
4200 seq, ack, pd->p_len, ackskew,
4201 (*state)->packets[0], (*state)->packets[1]);
4202 }
4203
3915 (*state)->packets[dirndx]++;
3916 (*state)->bytes[dirndx] += pd->tot_len;
3917
3918 /* update max window */
3919 if (src->max_win < win)
3920 src->max_win = win;
3921 /* synchronize sequencing */
3922 if (SEQ_GT(end, src->seqlo))
3923 src->seqlo = end;
3924 /* slide the window of what the other end can send */
3925 if (SEQ_GEQ(ack + (win << sws), dst->seqhi))

--- 49 unchanged lines hidden (view full) ---

3975 (ackskew <= (MAXACKWINDOW << sws)) ? ' ' : '4',
3976 SEQ_GEQ(src->seqhi + MAXACKWINDOW, end) ?' ' :'5',
3977 SEQ_GEQ(seq, src->seqlo - MAXACKWINDOW) ?' ' :'6');
3978 }
3979 return (PF_DROP);
3980 }
3981
3982 if (dst->scrub || src->scrub) {
4204 /* update max window */
4205 if (src->max_win < win)
4206 src->max_win = win;
4207 /* synchronize sequencing */
4208 if (SEQ_GT(end, src->seqlo))
4209 src->seqlo = end;
4210 /* slide the window of what the other end can send */
4211 if (SEQ_GEQ(ack + (win << sws), dst->seqhi))

--- 49 unchanged lines hidden (view full) ---

4261 (ackskew <= (MAXACKWINDOW << sws)) ? ' ' : '4',
4262 SEQ_GEQ(src->seqhi + MAXACKWINDOW, end) ?' ' :'5',
4263 SEQ_GEQ(seq, src->seqlo - MAXACKWINDOW) ?' ' :'6');
4264 }
4265 return (PF_DROP);
4266 }
4267
4268 if (dst->scrub || src->scrub) {
3983 if (pf_normalize_tcp_stateful(m, off, pd, reason, th, src, dst,
3984 ©back))
4269 if (pf_normalize_tcp_stateful(m, off, pd, reason, th,
4270 src, dst, &copyback))
3985 return (PF_DROP);
3986 }
3987
3988 /* Any packets which have gotten here are to be passed */
3989
3990 /* translate source/destination address, if necessary */
3991 if (STATE_TRANSLATE(*state)) {
3992 if (direction == PF_OUT)

--- 5 unchanged lines hidden (view full) ---

3998 &th->th_sum, &(*state)->lan.addr,
3999 (*state)->lan.port, 0, pd->af);
4000 m_copyback(m, off, sizeof(*th), (caddr_t)th);
4001 } else if (copyback) {
4002 /* Copyback sequence modulation or stateful scrub changes */
4003 m_copyback(m, off, sizeof(*th), (caddr_t)th);
4004 }
4005
4271 return (PF_DROP);
4272 }
4273
4274 /* Any packets which have gotten here are to be passed */
4275
4276 /* translate source/destination address, if necessary */
4277 if (STATE_TRANSLATE(*state)) {
4278 if (direction == PF_OUT)

--- 5 unchanged lines hidden (view full) ---

4284 &th->th_sum, &(*state)->lan.addr,
4285 (*state)->lan.port, 0, pd->af);
4286 m_copyback(m, off, sizeof(*th), (caddr_t)th);
4287 } else if (copyback) {
4288 /* Copyback sequence modulation or stateful scrub changes */
4289 m_copyback(m, off, sizeof(*th), (caddr_t)th);
4290 }
4291
4006 (*state)->rule.ptr->packets++;
4007 (*state)->rule.ptr->bytes += pd->tot_len;
4008 if ((*state)->nat_rule.ptr != NULL) {
4009 (*state)->nat_rule.ptr->packets++;
4010 (*state)->nat_rule.ptr->bytes += pd->tot_len;
4011 }
4012 if ((*state)->anchor.ptr != NULL) {
4013 (*state)->anchor.ptr->packets++;
4014 (*state)->anchor.ptr->bytes += pd->tot_len;
4015 }
4016 return (PF_PASS);
4017}
4018
4019int
4292 return (PF_PASS);
4293}
4294
4295int
4020pf_test_state_udp(struct pf_state **state, int direction, struct ifnet *ifp,
4021 struct mbuf *m, int ipoff, int off, void *h, struct pf_pdesc *pd)
4296pf_test_state_udp(struct pf_state **state, int direction, struct pfi_kif *kif,
4297 struct mbuf *m, int off, void *h, struct pf_pdesc *pd)
4022{
4023 struct pf_state_peer *src, *dst;
4298{
4299 struct pf_state_peer *src, *dst;
4024 struct pf_tree_node key;
4300 struct pf_state key;
4025 struct udphdr *uh = pd->hdr.udp;
4301 struct udphdr *uh = pd->hdr.udp;
4026 int dirndx;
4027
4028 key.af = pd->af;
4029 key.proto = IPPROTO_UDP;
4302
4303 key.af = pd->af;
4304 key.proto = IPPROTO_UDP;
4030 PF_ACPY(&key.addr[0], pd->src, key.af);
4031 PF_ACPY(&key.addr[1], pd->dst, key.af);
4032 key.port[0] = uh->uh_sport;
4033 key.port[1] = uh->uh_dport;
4305 if (direction == PF_IN) {
4306 PF_ACPY(&key.ext.addr, pd->src, key.af);
4307 PF_ACPY(&key.gwy.addr, pd->dst, key.af);
4308 key.ext.port = uh->uh_sport;
4309 key.gwy.port = uh->uh_dport;
4310 } else {
4311 PF_ACPY(&key.lan.addr, pd->src, key.af);
4312 PF_ACPY(&key.ext.addr, pd->dst, key.af);
4313 key.lan.port = uh->uh_sport;
4314 key.ext.port = uh->uh_dport;
4315 }
4034
4035 STATE_LOOKUP();
4036
4037 if (direction == (*state)->direction) {
4038 src = &(*state)->src;
4039 dst = &(*state)->dst;
4316
4317 STATE_LOOKUP();
4318
4319 if (direction == (*state)->direction) {
4320 src = &(*state)->src;
4321 dst = &(*state)->dst;
4040 dirndx = 0;
4041 } else {
4042 src = &(*state)->dst;
4043 dst = &(*state)->src;
4322 } else {
4323 src = &(*state)->dst;
4324 dst = &(*state)->src;
4044 dirndx = 1;
4045 }
4046
4325 }
4326
4047 (*state)->packets[dirndx]++;
4048 (*state)->bytes[dirndx] += pd->tot_len;
4049
4050 /* update states */
4051 if (src->state < PFUDPS_SINGLE)
4052 src->state = PFUDPS_SINGLE;
4053 if (dst->state == PFUDPS_SINGLE)
4054 dst->state = PFUDPS_MULTIPLE;
4055
4056 /* update expire time */
4057#ifdef __FreeBSD__

--- 14 unchanged lines hidden (view full) ---

4072 (*state)->gwy.port, 1, pd->af);
4073 else
4074 pf_change_ap(pd->dst, &uh->uh_dport, pd->ip_sum,
4075 &uh->uh_sum, &(*state)->lan.addr,
4076 (*state)->lan.port, 1, pd->af);
4077 m_copyback(m, off, sizeof(*uh), (caddr_t)uh);
4078 }
4079
4327 /* update states */
4328 if (src->state < PFUDPS_SINGLE)
4329 src->state = PFUDPS_SINGLE;
4330 if (dst->state == PFUDPS_SINGLE)
4331 dst->state = PFUDPS_MULTIPLE;
4332
4333 /* update expire time */
4334#ifdef __FreeBSD__

--- 14 unchanged lines hidden (view full) ---

4349 (*state)->gwy.port, 1, pd->af);
4350 else
4351 pf_change_ap(pd->dst, &uh->uh_dport, pd->ip_sum,
4352 &uh->uh_sum, &(*state)->lan.addr,
4353 (*state)->lan.port, 1, pd->af);
4354 m_copyback(m, off, sizeof(*uh), (caddr_t)uh);
4355 }
4356
4080 (*state)->rule.ptr->packets++;
4081 (*state)->rule.ptr->bytes += pd->tot_len;
4082 if ((*state)->nat_rule.ptr != NULL) {
4083 (*state)->nat_rule.ptr->packets++;
4084 (*state)->nat_rule.ptr->bytes += pd->tot_len;
4085 }
4086 if ((*state)->anchor.ptr != NULL) {
4087 (*state)->anchor.ptr->packets++;
4088 (*state)->anchor.ptr->bytes += pd->tot_len;
4089 }
4090 return (PF_PASS);
4091}
4092
4093int
4357 return (PF_PASS);
4358}
4359
4360int
4094pf_test_state_icmp(struct pf_state **state, int direction, struct ifnet *ifp,
4095 struct mbuf *m, int ipoff, int off, void *h, struct pf_pdesc *pd)
4361pf_test_state_icmp(struct pf_state **state, int direction, struct pfi_kif *kif,
4362 struct mbuf *m, int off, void *h, struct pf_pdesc *pd)
4096{
4097 struct pf_addr *saddr = pd->src, *daddr = pd->dst;
4098 u_int16_t icmpid = 0; /* make the compiler happy */
4099 u_int16_t *icmpsum = NULL; /* make the compiler happy */
4100 u_int8_t icmptype = 0; /* make the compiler happy */
4363{
4364 struct pf_addr *saddr = pd->src, *daddr = pd->dst;
4365 u_int16_t icmpid = 0; /* make the compiler happy */
4366 u_int16_t *icmpsum = NULL; /* make the compiler happy */
4367 u_int8_t icmptype = 0; /* make the compiler happy */
4101 int state_icmp = 0, dirndx;
4368 int state_icmp = 0;
4102
4103 switch (pd->proto) {
4104#ifdef INET
4105 case IPPROTO_ICMP:
4106 icmptype = pd->hdr.icmp->icmp_type;
4107 icmpid = pd->hdr.icmp->icmp_id;
4108 icmpsum = &pd->hdr.icmp->icmp_cksum;
4109

--- 21 unchanged lines hidden (view full) ---

4131 }
4132
4133 if (!state_icmp) {
4134
4135 /*
4136 * ICMP query/reply message not related to a TCP/UDP packet.
4137 * Search for an ICMP state.
4138 */
4369
4370 switch (pd->proto) {
4371#ifdef INET
4372 case IPPROTO_ICMP:
4373 icmptype = pd->hdr.icmp->icmp_type;
4374 icmpid = pd->hdr.icmp->icmp_id;
4375 icmpsum = &pd->hdr.icmp->icmp_cksum;
4376

--- 21 unchanged lines hidden (view full) ---

4398 }
4399
4400 if (!state_icmp) {
4401
4402 /*
4403 * ICMP query/reply message not related to a TCP/UDP packet.
4404 * Search for an ICMP state.
4405 */
4139 struct pf_tree_node key;
4406 struct pf_state key;
4140
4141 key.af = pd->af;
4142 key.proto = pd->proto;
4407
4408 key.af = pd->af;
4409 key.proto = pd->proto;
4143 PF_ACPY(&key.addr[0], saddr, key.af);
4144 PF_ACPY(&key.addr[1], daddr, key.af);
4145 key.port[0] = icmpid;
4146 key.port[1] = icmpid;
4410 if (direction == PF_IN) {
4411 PF_ACPY(&key.ext.addr, pd->src, key.af);
4412 PF_ACPY(&key.gwy.addr, pd->dst, key.af);
4413 key.ext.port = icmpid;
4414 key.gwy.port = icmpid;
4415 } else {
4416 PF_ACPY(&key.lan.addr, pd->src, key.af);
4417 PF_ACPY(&key.ext.addr, pd->dst, key.af);
4418 key.lan.port = icmpid;
4419 key.ext.port = icmpid;
4420 }
4147
4148 STATE_LOOKUP();
4149
4421
4422 STATE_LOOKUP();
4423
4150 dirndx = (direction == (*state)->direction) ? 0 : 1;
4151 (*state)->packets[dirndx]++;
4152 (*state)->bytes[dirndx] += pd->tot_len;
4153#ifdef __FreeBSD__
4154 (*state)->expire = time_second;
4155#else
4156 (*state)->expire = time.tv_sec;
4157#endif
4158 (*state)->timeout = PFTM_ICMP_ERROR_REPLY;
4159
4160 /* translate source/destination address, if necessary */

--- 143 unchanged lines hidden (view full) ---

4304 break;
4305#endif /* INET6 */
4306 }
4307
4308 switch (pd2.proto) {
4309 case IPPROTO_TCP: {
4310 struct tcphdr th;
4311 u_int32_t seq;
4424#ifdef __FreeBSD__
4425 (*state)->expire = time_second;
4426#else
4427 (*state)->expire = time.tv_sec;
4428#endif
4429 (*state)->timeout = PFTM_ICMP_ERROR_REPLY;
4430
4431 /* translate source/destination address, if necessary */

--- 143 unchanged lines hidden (view full) ---

4575 break;
4576#endif /* INET6 */
4577 }
4578
4579 switch (pd2.proto) {
4580 case IPPROTO_TCP: {
4581 struct tcphdr th;
4582 u_int32_t seq;
4312 struct pf_tree_node key;
4583 struct pf_state key;
4313 struct pf_state_peer *src, *dst;
4314 u_int8_t dws;
4315 int copyback = 0;
4316
4317 /*
4318 * Only the first 8 bytes of the TCP header can be
4319 * expected. Don't access any TCP header fields after
4320 * th_seq, an ackskew test is not possible.
4321 */
4322 if (!pf_pull_hdr(m, off2, &th, 8, NULL, NULL, pd2.af)) {
4323 DPFPRINTF(PF_DEBUG_MISC,
4324 ("pf: ICMP error message too short "
4325 "(tcp)\n"));
4326 return (PF_DROP);
4327 }
4328
4329 key.af = pd2.af;
4330 key.proto = IPPROTO_TCP;
4584 struct pf_state_peer *src, *dst;
4585 u_int8_t dws;
4586 int copyback = 0;
4587
4588 /*
4589 * Only the first 8 bytes of the TCP header can be
4590 * expected. Don't access any TCP header fields after
4591 * th_seq, an ackskew test is not possible.
4592 */
4593 if (!pf_pull_hdr(m, off2, &th, 8, NULL, NULL, pd2.af)) {
4594 DPFPRINTF(PF_DEBUG_MISC,
4595 ("pf: ICMP error message too short "
4596 "(tcp)\n"));
4597 return (PF_DROP);
4598 }
4599
4600 key.af = pd2.af;
4601 key.proto = IPPROTO_TCP;
4331 PF_ACPY(&key.addr[0], pd2.dst, pd2.af);
4332 key.port[0] = th.th_dport;
4333 PF_ACPY(&key.addr[1], pd2.src, pd2.af);
4334 key.port[1] = th.th_sport;
4602 if (direction == PF_IN) {
4603 PF_ACPY(&key.ext.addr, pd2.dst, key.af);
4604 PF_ACPY(&key.gwy.addr, pd2.src, key.af);
4605 key.ext.port = th.th_dport;
4606 key.gwy.port = th.th_sport;
4607 } else {
4608 PF_ACPY(&key.lan.addr, pd2.dst, key.af);
4609 PF_ACPY(&key.ext.addr, pd2.src, key.af);
4610 key.lan.port = th.th_dport;
4611 key.ext.port = th.th_sport;
4612 }
4335
4336 STATE_LOOKUP();
4337
4338 if (direction == (*state)->direction) {
4339 src = &(*state)->dst;
4340 dst = &(*state)->src;
4341 } else {
4342 src = &(*state)->src;
4343 dst = &(*state)->dst;
4344 }
4345
4613
4614 STATE_LOOKUP();
4615
4616 if (direction == (*state)->direction) {
4617 src = &(*state)->dst;
4618 dst = &(*state)->src;
4619 } else {
4620 src = &(*state)->src;
4621 dst = &(*state)->dst;
4622 }
4623
4346 if (src->wscale && dst->wscale && !(th.th_flags & TH_SYN))
4624 if (src->wscale && dst->wscale &&
4625 !(th.th_flags & TH_SYN))
4347 dws = dst->wscale & PF_WSCALE_MASK;
4348 else
4349 dws = 0;
4350
4351 /* Demodulate sequence number */
4352 seq = ntohl(th.th_seq) - src->seqdiff;
4353 if (src->seqdiff) {
4354 pf_change_a(&th.th_seq, icmpsum,

--- 56 unchanged lines hidden (view full) ---

4411 m_copyback(m, off2, 8, (caddr_t)&th);
4412 }
4413
4414 return (PF_PASS);
4415 break;
4416 }
4417 case IPPROTO_UDP: {
4418 struct udphdr uh;
4626 dws = dst->wscale & PF_WSCALE_MASK;
4627 else
4628 dws = 0;
4629
4630 /* Demodulate sequence number */
4631 seq = ntohl(th.th_seq) - src->seqdiff;
4632 if (src->seqdiff) {
4633 pf_change_a(&th.th_seq, icmpsum,

--- 56 unchanged lines hidden (view full) ---

4690 m_copyback(m, off2, 8, (caddr_t)&th);
4691 }
4692
4693 return (PF_PASS);
4694 break;
4695 }
4696 case IPPROTO_UDP: {
4697 struct udphdr uh;
4419 struct pf_tree_node key;
4698 struct pf_state key;
4420
4421 if (!pf_pull_hdr(m, off2, &uh, sizeof(uh),
4422 NULL, NULL, pd2.af)) {
4423 DPFPRINTF(PF_DEBUG_MISC,
4424 ("pf: ICMP error message too short "
4425 "(udp)\n"));
4426 return (PF_DROP);
4427 }
4428
4429 key.af = pd2.af;
4430 key.proto = IPPROTO_UDP;
4699
4700 if (!pf_pull_hdr(m, off2, &uh, sizeof(uh),
4701 NULL, NULL, pd2.af)) {
4702 DPFPRINTF(PF_DEBUG_MISC,
4703 ("pf: ICMP error message too short "
4704 "(udp)\n"));
4705 return (PF_DROP);
4706 }
4707
4708 key.af = pd2.af;
4709 key.proto = IPPROTO_UDP;
4431 PF_ACPY(&key.addr[0], pd2.dst, pd2.af);
4432 key.port[0] = uh.uh_dport;
4433 PF_ACPY(&key.addr[1], pd2.src, pd2.af);
4434 key.port[1] = uh.uh_sport;
4710 if (direction == PF_IN) {
4711 PF_ACPY(&key.ext.addr, pd2.dst, key.af);
4712 PF_ACPY(&key.gwy.addr, pd2.src, key.af);
4713 key.ext.port = uh.uh_dport;
4714 key.gwy.port = uh.uh_sport;
4715 } else {
4716 PF_ACPY(&key.lan.addr, pd2.dst, key.af);
4717 PF_ACPY(&key.ext.addr, pd2.src, key.af);
4718 key.lan.port = uh.uh_dport;
4719 key.ext.port = uh.uh_sport;
4720 }
4435
4436 STATE_LOOKUP();
4437
4438 if (STATE_TRANSLATE(*state)) {
4439 if (direction == PF_IN) {
4440 pf_change_icmp(pd2.src, &uh.uh_sport,
4441 daddr, &(*state)->lan.addr,
4442 (*state)->lan.port, &uh.uh_sum,

--- 30 unchanged lines hidden (view full) ---

4473 }
4474
4475 return (PF_PASS);
4476 break;
4477 }
4478#ifdef INET
4479 case IPPROTO_ICMP: {
4480 struct icmp iih;
4721
4722 STATE_LOOKUP();
4723
4724 if (STATE_TRANSLATE(*state)) {
4725 if (direction == PF_IN) {
4726 pf_change_icmp(pd2.src, &uh.uh_sport,
4727 daddr, &(*state)->lan.addr,
4728 (*state)->lan.port, &uh.uh_sum,

--- 30 unchanged lines hidden (view full) ---

4759 }
4760
4761 return (PF_PASS);
4762 break;
4763 }
4764#ifdef INET
4765 case IPPROTO_ICMP: {
4766 struct icmp iih;
4481 struct pf_tree_node key;
4767 struct pf_state key;
4482
4483 if (!pf_pull_hdr(m, off2, &iih, ICMP_MINLEN,
4484 NULL, NULL, pd2.af)) {
4485 DPFPRINTF(PF_DEBUG_MISC,
4486 ("pf: ICMP error message too short i"
4487 "(icmp)\n"));
4488 return (PF_DROP);
4489 }
4490
4491 key.af = pd2.af;
4492 key.proto = IPPROTO_ICMP;
4768
4769 if (!pf_pull_hdr(m, off2, &iih, ICMP_MINLEN,
4770 NULL, NULL, pd2.af)) {
4771 DPFPRINTF(PF_DEBUG_MISC,
4772 ("pf: ICMP error message too short i"
4773 "(icmp)\n"));
4774 return (PF_DROP);
4775 }
4776
4777 key.af = pd2.af;
4778 key.proto = IPPROTO_ICMP;
4493 PF_ACPY(&key.addr[0], pd2.dst, pd2.af);
4494 key.port[0] = iih.icmp_id;
4495 PF_ACPY(&key.addr[1], pd2.src, pd2.af);
4496 key.port[1] = iih.icmp_id;
4779 if (direction == PF_IN) {
4780 PF_ACPY(&key.ext.addr, pd2.dst, key.af);
4781 PF_ACPY(&key.gwy.addr, pd2.src, key.af);
4782 key.ext.port = iih.icmp_id;
4783 key.gwy.port = iih.icmp_id;
4784 } else {
4785 PF_ACPY(&key.lan.addr, pd2.dst, key.af);
4786 PF_ACPY(&key.ext.addr, pd2.src, key.af);
4787 key.lan.port = iih.icmp_id;
4788 key.ext.port = iih.icmp_id;
4789 }
4497
4498 STATE_LOOKUP();
4499
4500 if (STATE_TRANSLATE(*state)) {
4501 if (direction == PF_IN) {
4502 pf_change_icmp(pd2.src, &iih.icmp_id,
4503 daddr, &(*state)->lan.addr,
4504 (*state)->lan.port, NULL,

--- 16 unchanged lines hidden (view full) ---

4521
4522 return (PF_PASS);
4523 break;
4524 }
4525#endif /* INET */
4526#ifdef INET6
4527 case IPPROTO_ICMPV6: {
4528 struct icmp6_hdr iih;
4790
4791 STATE_LOOKUP();
4792
4793 if (STATE_TRANSLATE(*state)) {
4794 if (direction == PF_IN) {
4795 pf_change_icmp(pd2.src, &iih.icmp_id,
4796 daddr, &(*state)->lan.addr,
4797 (*state)->lan.port, NULL,

--- 16 unchanged lines hidden (view full) ---

4814
4815 return (PF_PASS);
4816 break;
4817 }
4818#endif /* INET */
4819#ifdef INET6
4820 case IPPROTO_ICMPV6: {
4821 struct icmp6_hdr iih;
4529 struct pf_tree_node key;
4822 struct pf_state key;
4530
4531 if (!pf_pull_hdr(m, off2, &iih,
4532 sizeof(struct icmp6_hdr), NULL, NULL, pd2.af)) {
4533 DPFPRINTF(PF_DEBUG_MISC,
4534 ("pf: ICMP error message too short "
4535 "(icmp6)\n"));
4536 return (PF_DROP);
4537 }
4538
4539 key.af = pd2.af;
4540 key.proto = IPPROTO_ICMPV6;
4823
4824 if (!pf_pull_hdr(m, off2, &iih,
4825 sizeof(struct icmp6_hdr), NULL, NULL, pd2.af)) {
4826 DPFPRINTF(PF_DEBUG_MISC,
4827 ("pf: ICMP error message too short "
4828 "(icmp6)\n"));
4829 return (PF_DROP);
4830 }
4831
4832 key.af = pd2.af;
4833 key.proto = IPPROTO_ICMPV6;
4541 PF_ACPY(&key.addr[0], pd2.dst, pd2.af);
4542 key.port[0] = iih.icmp6_id;
4543 PF_ACPY(&key.addr[1], pd2.src, pd2.af);
4544 key.port[1] = iih.icmp6_id;
4834 if (direction == PF_IN) {
4835 PF_ACPY(&key.ext.addr, pd2.dst, key.af);
4836 PF_ACPY(&key.gwy.addr, pd2.src, key.af);
4837 key.ext.port = iih.icmp6_id;
4838 key.gwy.port = iih.icmp6_id;
4839 } else {
4840 PF_ACPY(&key.lan.addr, pd2.dst, key.af);
4841 PF_ACPY(&key.ext.addr, pd2.src, key.af);
4842 key.lan.port = iih.icmp6_id;
4843 key.ext.port = iih.icmp6_id;
4844 }
4545
4546 STATE_LOOKUP();
4547
4548 if (STATE_TRANSLATE(*state)) {
4549 if (direction == PF_IN) {
4550 pf_change_icmp(pd2.src, &iih.icmp6_id,
4551 daddr, &(*state)->lan.addr,
4552 (*state)->lan.port, NULL,

--- 14 unchanged lines hidden (view full) ---

4567 (caddr_t)&iih);
4568 }
4569
4570 return (PF_PASS);
4571 break;
4572 }
4573#endif /* INET6 */
4574 default: {
4845
4846 STATE_LOOKUP();
4847
4848 if (STATE_TRANSLATE(*state)) {
4849 if (direction == PF_IN) {
4850 pf_change_icmp(pd2.src, &iih.icmp6_id,
4851 daddr, &(*state)->lan.addr,
4852 (*state)->lan.port, NULL,

--- 14 unchanged lines hidden (view full) ---

4867 (caddr_t)&iih);
4868 }
4869
4870 return (PF_PASS);
4871 break;
4872 }
4873#endif /* INET6 */
4874 default: {
4575 struct pf_tree_node key;
4875 struct pf_state key;
4576
4577 key.af = pd2.af;
4578 key.proto = pd2.proto;
4876
4877 key.af = pd2.af;
4878 key.proto = pd2.proto;
4579 PF_ACPY(&key.addr[0], pd2.dst, pd2.af);
4580 key.port[0] = 0;
4581 PF_ACPY(&key.addr[1], pd2.src, pd2.af);
4582 key.port[1] = 0;
4879 if (direction == PF_IN) {
4880 PF_ACPY(&key.ext.addr, pd2.dst, key.af);
4881 PF_ACPY(&key.gwy.addr, pd2.src, key.af);
4882 key.ext.port = 0;
4883 key.gwy.port = 0;
4884 } else {
4885 PF_ACPY(&key.lan.addr, pd2.dst, key.af);
4886 PF_ACPY(&key.ext.addr, pd2.src, key.af);
4887 key.lan.port = 0;
4888 key.ext.port = 0;
4889 }
4583
4584 STATE_LOOKUP();
4585
4586 if (STATE_TRANSLATE(*state)) {
4587 if (direction == PF_IN) {
4588 pf_change_icmp(pd2.src, NULL,
4589 daddr, &(*state)->lan.addr,
4590 0, NULL,

--- 30 unchanged lines hidden (view full) ---

4621 return (PF_PASS);
4622 break;
4623 }
4624 }
4625 }
4626}
4627
4628int
4890
4891 STATE_LOOKUP();
4892
4893 if (STATE_TRANSLATE(*state)) {
4894 if (direction == PF_IN) {
4895 pf_change_icmp(pd2.src, NULL,
4896 daddr, &(*state)->lan.addr,
4897 0, NULL,

--- 30 unchanged lines hidden (view full) ---

4928 return (PF_PASS);
4929 break;
4930 }
4931 }
4932 }
4933}
4934
4935int
4629pf_test_state_other(struct pf_state **state, int direction, struct ifnet *ifp,
4936pf_test_state_other(struct pf_state **state, int direction, struct pfi_kif *kif,
4630 struct pf_pdesc *pd)
4631{
4632 struct pf_state_peer *src, *dst;
4937 struct pf_pdesc *pd)
4938{
4939 struct pf_state_peer *src, *dst;
4633 struct pf_tree_node key;
4634 int dirndx;
4940 struct pf_state key;
4635
4636 key.af = pd->af;
4637 key.proto = pd->proto;
4941
4942 key.af = pd->af;
4943 key.proto = pd->proto;
4638 PF_ACPY(&key.addr[0], pd->src, key.af);
4639 PF_ACPY(&key.addr[1], pd->dst, key.af);
4640 key.port[0] = 0;
4641 key.port[1] = 0;
4944 if (direction == PF_IN) {
4945 PF_ACPY(&key.ext.addr, pd->src, key.af);
4946 PF_ACPY(&key.gwy.addr, pd->dst, key.af);
4947 key.ext.port = 0;
4948 key.gwy.port = 0;
4949 } else {
4950 PF_ACPY(&key.lan.addr, pd->src, key.af);
4951 PF_ACPY(&key.ext.addr, pd->dst, key.af);
4952 key.lan.port = 0;
4953 key.ext.port = 0;
4954 }
4642
4643 STATE_LOOKUP();
4644
4645 if (direction == (*state)->direction) {
4646 src = &(*state)->src;
4647 dst = &(*state)->dst;
4955
4956 STATE_LOOKUP();
4957
4958 if (direction == (*state)->direction) {
4959 src = &(*state)->src;
4960 dst = &(*state)->dst;
4648 dirndx = 0;
4649 } else {
4650 src = &(*state)->dst;
4651 dst = &(*state)->src;
4961 } else {
4962 src = &(*state)->dst;
4963 dst = &(*state)->src;
4652 dirndx = 1;
4653 }
4654
4964 }
4965
4655 (*state)->packets[dirndx]++;
4656 (*state)->bytes[dirndx] += pd->tot_len;
4657
4658 /* update states */
4659 if (src->state < PFOTHERS_SINGLE)
4660 src->state = PFOTHERS_SINGLE;
4661 if (dst->state == PFOTHERS_SINGLE)
4662 dst->state = PFOTHERS_MULTIPLE;
4663
4664 /* update expire time */
4665#ifdef __FreeBSD__

--- 35 unchanged lines hidden (view full) ---

4701#ifdef INET6
4702 case AF_INET6:
4703 PF_ACPY(pd->dst, &(*state)->lan.addr, pd->af);
4704 break;
4705#endif /* INET6 */
4706 }
4707 }
4708
4966 /* update states */
4967 if (src->state < PFOTHERS_SINGLE)
4968 src->state = PFOTHERS_SINGLE;
4969 if (dst->state == PFOTHERS_SINGLE)
4970 dst->state = PFOTHERS_MULTIPLE;
4971
4972 /* update expire time */
4973#ifdef __FreeBSD__

--- 35 unchanged lines hidden (view full) ---

5009#ifdef INET6
5010 case AF_INET6:
5011 PF_ACPY(pd->dst, &(*state)->lan.addr, pd->af);
5012 break;
5013#endif /* INET6 */
5014 }
5015 }
5016
4709 (*state)->rule.ptr->packets++;
4710 (*state)->rule.ptr->bytes += pd->tot_len;
4711 if ((*state)->nat_rule.ptr != NULL) {
4712 (*state)->nat_rule.ptr->packets++;
4713 (*state)->nat_rule.ptr->bytes += pd->tot_len;
4714 }
4715 if ((*state)->anchor.ptr != NULL) {
4716 (*state)->anchor.ptr->packets++;
4717 (*state)->anchor.ptr->bytes += pd->tot_len;
4718 }
4719 return (PF_PASS);
4720}
4721
4722/*
4723 * ipoff and off are measured from the start of the mbuf chain.
4724 * h must be at "ipoff" on the mbuf chain.
4725 */
4726void *

--- 10 unchanged lines hidden (view full) ---

4737 if (fragoff >= len)
4738 ACTION_SET(actionp, PF_PASS);
4739 else {
4740 ACTION_SET(actionp, PF_DROP);
4741 REASON_SET(reasonp, PFRES_FRAG);
4742 }
4743 return (NULL);
4744 }
5017 return (PF_PASS);
5018}
5019
5020/*
5021 * ipoff and off are measured from the start of the mbuf chain.
5022 * h must be at "ipoff" on the mbuf chain.
5023 */
5024void *

--- 10 unchanged lines hidden (view full) ---

5035 if (fragoff >= len)
5036 ACTION_SET(actionp, PF_PASS);
5037 else {
5038 ACTION_SET(actionp, PF_DROP);
5039 REASON_SET(reasonp, PFRES_FRAG);
5040 }
5041 return (NULL);
5042 }
4745 if (m->m_pkthdr.len < off + len || ntohs(h->ip_len) < off + len) {
5043 if (m->m_pkthdr.len < off + len ||
5044 ntohs(h->ip_len) < off + len) {
4746 ACTION_SET(actionp, PF_DROP);
4747 REASON_SET(reasonp, PFRES_SHORT);
4748 return (NULL);
4749 }
4750 break;
4751 }
4752#endif /* INET */
4753#ifdef INET6

--- 42 unchanged lines hidden (view full) ---

4796 RTFREE(ro.ro_rt);
4797 }
4798
4799 return (ret);
4800}
4801
4802#ifdef INET
4803
5045 ACTION_SET(actionp, PF_DROP);
5046 REASON_SET(reasonp, PFRES_SHORT);
5047 return (NULL);
5048 }
5049 break;
5050 }
5051#endif /* INET */
5052#ifdef INET6

--- 42 unchanged lines hidden (view full) ---

5095 RTFREE(ro.ro_rt);
5096 }
5097
5098 return (ret);
5099}
5100
5101#ifdef INET
5102
4804#if defined(__FreeBSD__) && (__FreeBSD_version < 501105)
4805int
4806ip_fragment(struct ip *ip, struct mbuf **m_frag, int mtu,
4807 u_long if_hwassist_flags, int sw_csum)
4808{
4809 int error = 0;
4810 int hlen = ip->ip_hl << 2;
4811 int len = (mtu - hlen) & ~7; /* size of payload in each fragment */
4812 int off;
4813 struct mbuf *m0 = *m_frag; /* the original packet */
4814 int firstlen;
4815 struct mbuf **mnext;
4816 int nfrags;
4817
4818 if (ip->ip_off & IP_DF) { /* Fragmentation not allowed */
4819 ipstat.ips_cantfrag++;
4820 return EMSGSIZE;
4821 }
4822
4823 /*
4824 * Must be able to put at least 8 bytes per fragment.
4825 */
4826 if (len < 8)
4827 return EMSGSIZE;
4828
4829 /*
4830 * If the interface will not calculate checksums on
4831 * fragmented packets, then do it here.
4832 */
4833 if (m0->m_pkthdr.csum_flags & CSUM_DELAY_DATA &&
4834 (if_hwassist_flags & CSUM_IP_FRAGS) == 0) {
4835 in_delayed_cksum(m0);
4836 m0->m_pkthdr.csum_flags &= ~CSUM_DELAY_DATA;
4837 }
4838
4839 if (len > PAGE_SIZE) {
4840 /*
4841 * Fragment large datagrams such that each segment
4842 * contains a multiple of PAGE_SIZE amount of data,
4843 * plus headers. This enables a receiver to perform
4844 * page-flipping zero-copy optimizations.
4845 *
4846 * XXX When does this help given that sender and receiver
4847 * could have different page sizes, and also mtu could
4848 * be less than the receiver's page size ?
4849 */
4850 int newlen;
4851 struct mbuf *m;
4852
4853 for (m = m0, off = 0; m && (off+m->m_len) <= mtu; m = m->m_next)
4854 off += m->m_len;
4855
4856 /*
4857 * firstlen (off - hlen) must be aligned on an
4858 * 8-byte boundary
4859 */
4860 if (off < hlen)
4861 goto smart_frag_failure;
4862 off = ((off - hlen) & ~7) + hlen;
4863 newlen = (~PAGE_MASK) & mtu;
4864 if ((newlen + sizeof (struct ip)) > mtu) {
4865 /* we failed, go back the default */
4866smart_frag_failure:
4867 newlen = len;
4868 off = hlen + len;
4869 }
4870 len = newlen;
4871
4872 } else {
4873 off = hlen + len;
4874 }
4875
4876 firstlen = off - hlen;
4877 mnext = &m0->m_nextpkt; /* pointer to next packet */
4878
4879 /*
4880 * Loop through length of segment after first fragment,
4881 * make new header and copy data of each part and link onto chain.
4882 * Here, m0 is the original packet, m is the fragment being created.
4883 * The fragments are linked off the m_nextpkt of the original
4884 * packet, which after processing serves as the first fragment.
4885 */
4886 for (nfrags = 1; off < ip->ip_len; off += len, nfrags++) {
4887 struct ip *mhip; /* ip header on the fragment */
4888 struct mbuf *m;
4889 int mhlen = sizeof (struct ip);
4890
4891 MGETHDR(m, M_DONTWAIT, MT_HEADER);
4892 if (m == 0) {
4893 error = ENOBUFS;
4894 ipstat.ips_odropped++;
4895 goto done;
4896 }
4897 m->m_flags |= (m0->m_flags & M_MCAST) | M_FRAG;
4898 /*
4899 * In the first mbuf, leave room for the link header, then
4900 * copy the original IP header including options. The payload
4901 * goes into an additional mbuf chain returned by m_copy().
4902 */
4903 m->m_data += max_linkhdr;
4904 mhip = mtod(m, struct ip *);
4905 *mhip = *ip;
4906 if (hlen > sizeof (struct ip)) {
4907 mhlen = ip_optcopy(ip, mhip) + sizeof (struct ip);
4908 mhip->ip_v = IPVERSION;
4909 mhip->ip_hl = mhlen >> 2;
4910 }
4911 m->m_len = mhlen;
4912 /* XXX do we need to add ip->ip_off below ? */
4913 mhip->ip_off = ((off - hlen) >> 3) + ip->ip_off;
4914 if (off + len >= ip->ip_len) { /* last fragment */
4915 len = ip->ip_len - off;
4916 m->m_flags |= M_LASTFRAG;
4917 } else
4918 mhip->ip_off |= IP_MF;
4919 mhip->ip_len = htons((u_short)(len + mhlen));
4920 m->m_next = m_copy(m0, off, len);
4921 if (m->m_next == 0) { /* copy failed */
4922 m_free(m);
4923 error = ENOBUFS; /* ??? */
4924 ipstat.ips_odropped++;
4925 goto done;
4926 }
4927 m->m_pkthdr.len = mhlen + len;
4928 m->m_pkthdr.rcvif = (struct ifnet *)0;
4929#ifdef MAC
4930 mac_create_fragment(m0, m);
4931#endif
4932 m->m_pkthdr.csum_flags = m0->m_pkthdr.csum_flags;
4933 mhip->ip_off = htons(mhip->ip_off);
4934 mhip->ip_sum = 0;
4935 if (sw_csum & CSUM_DELAY_IP)
4936 mhip->ip_sum = in_cksum(m, mhlen);
4937 *mnext = m;
4938 mnext = &m->m_nextpkt;
4939 }
4940 ipstat.ips_ofragments += nfrags;
4941
4942 /* set first marker for fragment chain */
4943 m0->m_flags |= M_FIRSTFRAG | M_FRAG;
4944 m0->m_pkthdr.csum_data = nfrags;
4945
4946 /*
4947 * Update first fragment by trimming what's been copied out
4948 * and updating header.
4949 */
4950 m_adj(m0, hlen + firstlen - ip->ip_len);
4951 m0->m_pkthdr.len = hlen + firstlen;
4952 ip->ip_len = htons((u_short)m0->m_pkthdr.len);
4953 ip->ip_off |= IP_MF;
4954 ip->ip_off = htons(ip->ip_off);
4955 ip->ip_sum = 0;
4956 if (sw_csum & CSUM_DELAY_IP)
4957 ip->ip_sum = in_cksum(m0, hlen);
4958
4959done:
4960 *m_frag = m0;
4961 return error;
4962}
4963#endif /* __FreeBSD__ && __FreeBSD_version > 501105 */
4964
4965void
4966pf_route(struct mbuf **m, struct pf_rule *r, int dir, struct ifnet *oifp,
4967 struct pf_state *s)
4968{
4969 struct mbuf *m0, *m1;
4970 struct route iproute;
4971 struct route *ro = NULL; /* XXX: was uninitialized */
4972 struct sockaddr_in *dst;
4973 struct ip *ip;
4974 struct ifnet *ifp = NULL;
4975 struct m_tag *mtag;
4976 struct pf_addr naddr;
5103void
5104pf_route(struct mbuf **m, struct pf_rule *r, int dir, struct ifnet *oifp,
5105 struct pf_state *s)
5106{
5107 struct mbuf *m0, *m1;
5108 struct route iproute;
5109 struct route *ro = NULL; /* XXX: was uninitialized */
5110 struct sockaddr_in *dst;
5111 struct ip *ip;
5112 struct ifnet *ifp = NULL;
5113 struct m_tag *mtag;
5114 struct pf_addr naddr;
5115 struct pf_src_node *sn = NULL;
4977 int error = 0;
4978#ifdef __FreeBSD__
4979 int sw_csum;
4980#endif
4981
4982 if (m == NULL || *m == NULL || r == NULL ||
4983 (dir != PF_IN && dir != PF_OUT) || oifp == NULL)
4984 panic("pf_route: invalid parameters");

--- 42 unchanged lines hidden (view full) ---

5027 ro->ro_rt->rt_use++;
5028
5029 if (ro->ro_rt->rt_flags & RTF_GATEWAY)
5030 dst = satosin(ro->ro_rt->rt_gateway);
5031 } else {
5032 if (TAILQ_EMPTY(&r->rpool.list))
5033 panic("pf_route: TAILQ_EMPTY(&r->rpool.list)");
5034 if (s == NULL) {
5116 int error = 0;
5117#ifdef __FreeBSD__
5118 int sw_csum;
5119#endif
5120
5121 if (m == NULL || *m == NULL || r == NULL ||
5122 (dir != PF_IN && dir != PF_OUT) || oifp == NULL)
5123 panic("pf_route: invalid parameters");

--- 42 unchanged lines hidden (view full) ---

5166 ro->ro_rt->rt_use++;
5167
5168 if (ro->ro_rt->rt_flags & RTF_GATEWAY)
5169 dst = satosin(ro->ro_rt->rt_gateway);
5170 } else {
5171 if (TAILQ_EMPTY(&r->rpool.list))
5172 panic("pf_route: TAILQ_EMPTY(&r->rpool.list)");
5173 if (s == NULL) {
5035 pf_map_addr(AF_INET, &r->rpool,
5036 (struct pf_addr *)&ip->ip_src,
5037 &naddr, NULL);
5174 pf_map_addr(AF_INET, r, (struct pf_addr *)&ip->ip_src,
5175 &naddr, NULL, &sn);
5038 if (!PF_AZERO(&naddr, AF_INET))
5039 dst->sin_addr.s_addr = naddr.v4.s_addr;
5176 if (!PF_AZERO(&naddr, AF_INET))
5177 dst->sin_addr.s_addr = naddr.v4.s_addr;
5040 ifp = r->rpool.cur->ifp;
5178 ifp = r->rpool.cur->kif ?
5179 r->rpool.cur->kif->pfik_ifp : NULL;
5041 } else {
5042 if (!PF_AZERO(&s->rt_addr, AF_INET))
5043 dst->sin_addr.s_addr =
5044 s->rt_addr.v4.s_addr;
5180 } else {
5181 if (!PF_AZERO(&s->rt_addr, AF_INET))
5182 dst->sin_addr.s_addr =
5183 s->rt_addr.v4.s_addr;
5045 ifp = s->rt_ifp;
5184 ifp = s->rt_kif ? s->rt_kif->pfik_ifp : NULL;
5046 }
5047 }
5048
5049 if (ifp == NULL)
5050 goto bad;
5051
5185 }
5186 }
5187
5188 if (ifp == NULL)
5189 goto bad;
5190
5052 if (m_tag_find(m0, PACKET_TAG_PF_ROUTED, NULL) != NULL)
5053 goto bad;
5054 mtag = m_tag_get(PACKET_TAG_PF_ROUTED, 0, M_NOWAIT);
5055 if (mtag == NULL)
5056 goto bad;
5057 m_tag_prepend(m0, mtag);
5191 mtag = m_tag_find(m0, PACKET_TAG_PF_ROUTED, NULL);
5192 if (mtag == NULL) {
5193 struct m_tag *mtag;
5058
5194
5059 if (oifp != ifp) {
5195 mtag = m_tag_get(PACKET_TAG_PF_ROUTED, 0, M_NOWAIT);
5196 if (mtag == NULL)
5197 goto bad;
5198 m_tag_prepend(m0, mtag);
5199 }
5200
5201 if (oifp != ifp && mtag == NULL) {
5060#ifdef __FreeBSD__
5061 PF_UNLOCK();
5062 if (pf_test(PF_OUT, ifp, &m0) != PF_PASS) {
5063 PF_LOCK();
5064 goto bad;
5065 } else if (m0 == NULL) {
5066 PF_LOCK();
5067 goto done;

--- 47 unchanged lines hidden (view full) ---

5115 PF_UNLOCK();
5116 error = (*ifp->if_output)(ifp, m0, sintosa(dst), ro->ro_rt);
5117 PF_LOCK();
5118 goto done;
5119 }
5120
5121#else
5122 /* Copied from ip_output. */
5202#ifdef __FreeBSD__
5203 PF_UNLOCK();
5204 if (pf_test(PF_OUT, ifp, &m0) != PF_PASS) {
5205 PF_LOCK();
5206 goto bad;
5207 } else if (m0 == NULL) {
5208 PF_LOCK();
5209 goto done;

--- 47 unchanged lines hidden (view full) ---

5257 PF_UNLOCK();
5258 error = (*ifp->if_output)(ifp, m0, sintosa(dst), ro->ro_rt);
5259 PF_LOCK();
5260 goto done;
5261 }
5262
5263#else
5264 /* Copied from ip_output. */
5265#ifdef IPSEC
5266 /*
5267 * If deferred crypto processing is needed, check that the
5268 * interface supports it.
5269 */
5270 if ((mtag = m_tag_find(m0, PACKET_TAG_IPSEC_OUT_CRYPTO_NEEDED, NULL))
5271 != NULL && (ifp->if_capabilities & IFCAP_IPSEC) == 0) {
5272 /* Notify IPsec to do its own crypto. */
5273 ipsp_skipcrypto_unmark((struct tdb_ident *)(mtag + 1));
5274 goto bad;
5275 }
5276#endif /* IPSEC */
5277
5278 /* Catch routing changes wrt. hardware checksumming for TCP or UDP. */
5279 if (m0->m_pkthdr.csum & M_TCPV4_CSUM_OUT) {
5280 if (!(ifp->if_capabilities & IFCAP_CSUM_TCPv4) ||
5281 ifp->if_bridge != NULL) {
5282 in_delayed_cksum(m0);
5283 m0->m_pkthdr.csum &= ~M_TCPV4_CSUM_OUT; /* Clear */
5284 }
5285 } else if (m0->m_pkthdr.csum & M_UDPV4_CSUM_OUT) {
5286 if (!(ifp->if_capabilities & IFCAP_CSUM_UDPv4) ||
5287 ifp->if_bridge != NULL) {
5288 in_delayed_cksum(m0);
5289 m0->m_pkthdr.csum &= ~M_UDPV4_CSUM_OUT; /* Clear */
5290 }
5291 }
5292
5123 if (ntohs(ip->ip_len) <= ifp->if_mtu) {
5124 if ((ifp->if_capabilities & IFCAP_CSUM_IPv4) &&
5125 ifp->if_bridge == NULL) {
5126 m0->m_pkthdr.csum |= M_IPV4_CSUM_OUT;
5127 ipstat.ips_outhwcsum++;
5128 } else {
5129 ip->ip_sum = 0;
5130 ip->ip_sum = in_cksum(m0, ip->ip_hl << 2);

--- 91 unchanged lines hidden (view full) ---

5222 struct mbuf *m0;
5223 struct m_tag *mtag;
5224 struct route_in6 ip6route;
5225 struct route_in6 *ro;
5226 struct sockaddr_in6 *dst;
5227 struct ip6_hdr *ip6;
5228 struct ifnet *ifp = NULL;
5229 struct pf_addr naddr;
5293 if (ntohs(ip->ip_len) <= ifp->if_mtu) {
5294 if ((ifp->if_capabilities & IFCAP_CSUM_IPv4) &&
5295 ifp->if_bridge == NULL) {
5296 m0->m_pkthdr.csum |= M_IPV4_CSUM_OUT;
5297 ipstat.ips_outhwcsum++;
5298 } else {
5299 ip->ip_sum = 0;
5300 ip->ip_sum = in_cksum(m0, ip->ip_hl << 2);

--- 91 unchanged lines hidden (view full) ---

5392 struct mbuf *m0;
5393 struct m_tag *mtag;
5394 struct route_in6 ip6route;
5395 struct route_in6 *ro;
5396 struct sockaddr_in6 *dst;
5397 struct ip6_hdr *ip6;
5398 struct ifnet *ifp = NULL;
5399 struct pf_addr naddr;
5400 struct pf_src_node *sn = NULL;
5230 int error = 0;
5231
5232 if (m == NULL || *m == NULL || r == NULL ||
5233 (dir != PF_IN && dir != PF_OUT) || oifp == NULL)
5234 panic("pf_route6: invalid parameters");
5235
5236 if (r->rt == PF_DUPTO) {
5237 m0 = *m;

--- 42 unchanged lines hidden (view full) ---

5280 ip6_output(m0, NULL, NULL, 0, NULL, NULL);
5281#endif
5282 return;
5283 }
5284
5285 if (TAILQ_EMPTY(&r->rpool.list))
5286 panic("pf_route6: TAILQ_EMPTY(&r->rpool.list)");
5287 if (s == NULL) {
5401 int error = 0;
5402
5403 if (m == NULL || *m == NULL || r == NULL ||
5404 (dir != PF_IN && dir != PF_OUT) || oifp == NULL)
5405 panic("pf_route6: invalid parameters");
5406
5407 if (r->rt == PF_DUPTO) {
5408 m0 = *m;

--- 42 unchanged lines hidden (view full) ---

5451 ip6_output(m0, NULL, NULL, 0, NULL, NULL);
5452#endif
5453 return;
5454 }
5455
5456 if (TAILQ_EMPTY(&r->rpool.list))
5457 panic("pf_route6: TAILQ_EMPTY(&r->rpool.list)");
5458 if (s == NULL) {
5288 pf_map_addr(AF_INET6, &r->rpool,
5289 (struct pf_addr *)&ip6->ip6_src, &naddr, NULL);
5459 pf_map_addr(AF_INET6, r, (struct pf_addr *)&ip6->ip6_src,
5460 &naddr, NULL, &sn);
5290 if (!PF_AZERO(&naddr, AF_INET6))
5291 PF_ACPY((struct pf_addr *)&dst->sin6_addr,
5292 &naddr, AF_INET6);
5461 if (!PF_AZERO(&naddr, AF_INET6))
5462 PF_ACPY((struct pf_addr *)&dst->sin6_addr,
5463 &naddr, AF_INET6);
5293 ifp = r->rpool.cur->ifp;
5464 ifp = r->rpool.cur->kif ? r->rpool.cur->kif->pfik_ifp : NULL;
5294 } else {
5295 if (!PF_AZERO(&s->rt_addr, AF_INET6))
5296 PF_ACPY((struct pf_addr *)&dst->sin6_addr,
5297 &s->rt_addr, AF_INET6);
5465 } else {
5466 if (!PF_AZERO(&s->rt_addr, AF_INET6))
5467 PF_ACPY((struct pf_addr *)&dst->sin6_addr,
5468 &s->rt_addr, AF_INET6);
5298 ifp = s->rt_ifp;
5469 ifp = s->rt_kif ? s->rt_kif->pfik_ifp : NULL;
5299 }
5300
5301 if (ifp == NULL)
5302 goto bad;
5303
5304 if (oifp != ifp) {
5305 mtag = m_tag_find(m0, PACKET_TAG_PF_ROUTED, NULL);
5306 if (mtag == NULL) {

--- 193 unchanged lines hidden (view full) ---

5500#else
5501/*
5502 * check protocol (tcp/udp/icmp/icmp6) checksum and set mbuf flag
5503 * off is the offset where the protocol header starts
5504 * len is the total length of protocol header plus payload
5505 * returns 0 when the checksum is valid, otherwise returns 1.
5506 */
5507int
5470 }
5471
5472 if (ifp == NULL)
5473 goto bad;
5474
5475 if (oifp != ifp) {
5476 mtag = m_tag_find(m0, PACKET_TAG_PF_ROUTED, NULL);
5477 if (mtag == NULL) {

--- 193 unchanged lines hidden (view full) ---

5671#else
5672/*
5673 * check protocol (tcp/udp/icmp/icmp6) checksum and set mbuf flag
5674 * off is the offset where the protocol header starts
5675 * len is the total length of protocol header plus payload
5676 * returns 0 when the checksum is valid, otherwise returns 1.
5677 */
5678int
5508pf_check_proto_cksum(struct mbuf *m, int off, int len, u_int8_t p, sa_family_t af)
5679pf_check_proto_cksum(struct mbuf *m, int off, int len, u_int8_t p,
5680 sa_family_t af)
5509{
5510 u_int16_t flag_ok, flag_bad;
5511 u_int16_t sum;
5512
5513 switch (p) {
5514 case IPPROTO_TCP:
5515 flag_ok = M_TCP_CSUM_IN_OK;
5516 flag_bad = M_TCP_CSUM_IN_BAD;

--- 65 unchanged lines hidden (view full) ---

5582 }
5583 return (1);
5584 }
5585 m->m_pkthdr.csum |= flag_ok;
5586 return (0);
5587}
5588#endif
5589
5681{
5682 u_int16_t flag_ok, flag_bad;
5683 u_int16_t sum;
5684
5685 switch (p) {
5686 case IPPROTO_TCP:
5687 flag_ok = M_TCP_CSUM_IN_OK;
5688 flag_bad = M_TCP_CSUM_IN_BAD;

--- 65 unchanged lines hidden (view full) ---

5754 }
5755 return (1);
5756 }
5757 m->m_pkthdr.csum |= flag_ok;
5758 return (0);
5759}
5760#endif
5761
5762static int
5763pf_add_mbuf_tag(struct mbuf *m, u_int tag)
5764{
5765 struct m_tag *mtag;
5766
5767 if (m_tag_find(m, tag, NULL) != NULL)
5768 return (0);
5769 mtag = m_tag_get(tag, 0, M_NOWAIT);
5770 if (mtag == NULL)
5771 return (1);
5772 m_tag_prepend(m, mtag);
5773 return (0);
5774}
5775
5590#ifdef INET
5591int
5592pf_test(int dir, struct ifnet *ifp, struct mbuf **m0)
5593{
5776#ifdef INET
5777int
5778pf_test(int dir, struct ifnet *ifp, struct mbuf **m0)
5779{
5594 u_short action, reason = 0, log = 0;
5595 struct mbuf *m = *m0;
5596 struct ip *h = NULL; /* XXX: was uninitialized */
5597 struct pf_rule *a = NULL, *r = &pf_default_rule, *tr;
5598 struct pf_state *s = NULL;
5599 struct pf_ruleset *ruleset = NULL;
5600 struct pf_pdesc pd;
5601 int off;
5602 int pqid = 0;
5780 struct pfi_kif *kif;
5781 u_short action, reason = 0, log = 0;
5782 struct mbuf *m = *m0;
5783 struct ip *h = NULL; /* make the compiler happy */
5784 struct pf_rule *a = NULL, *r = &pf_default_rule, *tr, *nr;
5785 struct pf_state *s = NULL;
5786 struct pf_ruleset *ruleset = NULL;
5787 struct pf_pdesc pd;
5788 int off, dirndx, pqid = 0;
5603
5604#ifdef __FreeBSD__
5605 PF_LOCK();
5606#endif
5607 if (!pf_status.running ||
5608 (m_tag_find(m, PACKET_TAG_PF_GENERATED, NULL) != NULL)) {
5609#ifdef __FreeBSD__
5610 PF_UNLOCK();
5611#endif
5612 return (PF_PASS);
5613 }
5614
5789
5790#ifdef __FreeBSD__
5791 PF_LOCK();
5792#endif
5793 if (!pf_status.running ||
5794 (m_tag_find(m, PACKET_TAG_PF_GENERATED, NULL) != NULL)) {
5795#ifdef __FreeBSD__
5796 PF_UNLOCK();
5797#endif
5798 return (PF_PASS);
5799 }
5800
5615#if defined(__FreeBSD__) && (__FreeBSD_version >= 501000)
5801 kif = pfi_index2kif[ifp->if_index];
5802 if (kif == NULL) {
5803#ifdef __FreeBSD__
5804 PF_UNLOCK();
5805#endif
5806 return (PF_DROP);
5807 }
5808
5809#ifdef __FreeBSD__
5616 M_ASSERTPKTHDR(m);
5617#else
5618#ifdef DIAGNOSTIC
5619 if ((m->m_flags & M_PKTHDR) == 0)
5620 panic("non-M_PKTHDR is passed to pf_test");
5621#endif
5622#endif
5623
5810 M_ASSERTPKTHDR(m);
5811#else
5812#ifdef DIAGNOSTIC
5813 if ((m->m_flags & M_PKTHDR) == 0)
5814 panic("non-M_PKTHDR is passed to pf_test");
5815#endif
5816#endif
5817
5818 memset(&pd, 0, sizeof(pd));
5624 if (m->m_pkthdr.len < (int)sizeof(*h)) {
5625 action = PF_DROP;
5626 REASON_SET(&reason, PFRES_SHORT);
5627 log = 1;
5628 goto done;
5629 }
5630
5631 /* We do IP header normalization and packet reassembly here */
5819 if (m->m_pkthdr.len < (int)sizeof(*h)) {
5820 action = PF_DROP;
5821 REASON_SET(&reason, PFRES_SHORT);
5822 log = 1;
5823 goto done;
5824 }
5825
5826 /* We do IP header normalization and packet reassembly here */
5632 if (pf_normalize_ip(m0, dir, ifp, &reason) != PF_PASS) {
5827 if (pf_normalize_ip(m0, dir, kif, &reason) != PF_PASS) {
5633 action = PF_DROP;
5634 goto done;
5635 }
5636 m = *m0;
5637 h = mtod(m, struct ip *);
5638
5639 off = h->ip_hl << 2;
5640 if (off < (int)sizeof(*h)) {
5641 action = PF_DROP;
5642 REASON_SET(&reason, PFRES_SHORT);
5643 log = 1;
5644 goto done;
5645 }
5646
5828 action = PF_DROP;
5829 goto done;
5830 }
5831 m = *m0;
5832 h = mtod(m, struct ip *);
5833
5834 off = h->ip_hl << 2;
5835 if (off < (int)sizeof(*h)) {
5836 action = PF_DROP;
5837 REASON_SET(&reason, PFRES_SHORT);
5838 log = 1;
5839 goto done;
5840 }
5841
5647 memset(&pd, 0, sizeof(pd));
5648 pd.src = (struct pf_addr *)&h->ip_src;
5649 pd.dst = (struct pf_addr *)&h->ip_dst;
5842 pd.src = (struct pf_addr *)&h->ip_src;
5843 pd.dst = (struct pf_addr *)&h->ip_dst;
5844 PF_ACPY(&pd.baddr, dir == PF_OUT ? pd.src : pd.dst, AF_INET);
5650 pd.ip_sum = &h->ip_sum;
5651 pd.proto = h->ip_p;
5652 pd.af = AF_INET;
5653 pd.tos = h->ip_tos;
5654 pd.tot_len = ntohs(h->ip_len);
5655
5656 /* handle fragments that didn't get reassembled by normalization */
5657 if (h->ip_off & htons(IP_MF | IP_OFFMASK)) {
5845 pd.ip_sum = &h->ip_sum;
5846 pd.proto = h->ip_p;
5847 pd.af = AF_INET;
5848 pd.tos = h->ip_tos;
5849 pd.tot_len = ntohs(h->ip_len);
5850
5851 /* handle fragments that didn't get reassembled by normalization */
5852 if (h->ip_off & htons(IP_MF | IP_OFFMASK)) {
5658 action = pf_test_fragment(&r, dir, ifp, m, h,
5853 action = pf_test_fragment(&r, dir, kif, m, h,
5659 &pd, &a, &ruleset);
5660 goto done;
5661 }
5662
5663 switch (h->ip_p) {
5664
5665 case IPPROTO_TCP: {
5666 struct tcphdr th;

--- 7 unchanged lines hidden (view full) ---

5674 if (dir == PF_IN && pf_check_proto_cksum(m, off,
5675 ntohs(h->ip_len) - off, IPPROTO_TCP, AF_INET)) {
5676 action = PF_DROP;
5677 goto done;
5678 }
5679 pd.p_len = pd.tot_len - off - (th.th_off << 2);
5680 if ((th.th_flags & TH_ACK) && pd.p_len == 0)
5681 pqid = 1;
5854 &pd, &a, &ruleset);
5855 goto done;
5856 }
5857
5858 switch (h->ip_p) {
5859
5860 case IPPROTO_TCP: {
5861 struct tcphdr th;

--- 7 unchanged lines hidden (view full) ---

5869 if (dir == PF_IN && pf_check_proto_cksum(m, off,
5870 ntohs(h->ip_len) - off, IPPROTO_TCP, AF_INET)) {
5871 action = PF_DROP;
5872 goto done;
5873 }
5874 pd.p_len = pd.tot_len - off - (th.th_off << 2);
5875 if ((th.th_flags & TH_ACK) && pd.p_len == 0)
5876 pqid = 1;
5682 action = pf_normalize_tcp(dir, ifp, m, 0, off, h, &pd);
5877 action = pf_normalize_tcp(dir, kif, m, 0, off, h, &pd);
5683 if (action == PF_DROP)
5878 if (action == PF_DROP)
5684 break;
5685 action = pf_test_state_tcp(&s, dir, ifp, m, 0, off, h, &pd,
5879 goto done;
5880 action = pf_test_state_tcp(&s, dir, kif, m, off, h, &pd,
5686 &reason);
5687 if (action == PF_PASS) {
5881 &reason);
5882 if (action == PF_PASS) {
5883#if NPFSYNC
5884 pfsync_update_state(s);
5885#endif
5688 r = s->rule.ptr;
5886 r = s->rule.ptr;
5887 a = s->anchor.ptr;
5689 log = s->log;
5690 } else if (s == NULL)
5888 log = s->log;
5889 } else if (s == NULL)
5691 action = pf_test_tcp(&r, &s, dir, ifp,
5692 m, 0, off, h, &pd, &a, &ruleset);
5890 action = pf_test_tcp(&r, &s, dir, kif,
5891 m, off, h, &pd, &a, &ruleset);
5693 break;
5694 }
5695
5696 case IPPROTO_UDP: {
5697 struct udphdr uh;
5698
5699 pd.hdr.udp = &uh;
5700 if (!pf_pull_hdr(m, off, &uh, sizeof(uh),
5701 &action, &reason, AF_INET)) {
5702 log = action != PF_PASS;
5703 goto done;
5704 }
5705 if (dir == PF_IN && uh.uh_sum && pf_check_proto_cksum(m,
5706 off, ntohs(h->ip_len) - off, IPPROTO_UDP, AF_INET)) {
5707 action = PF_DROP;
5708 goto done;
5709 }
5892 break;
5893 }
5894
5895 case IPPROTO_UDP: {
5896 struct udphdr uh;
5897
5898 pd.hdr.udp = &uh;
5899 if (!pf_pull_hdr(m, off, &uh, sizeof(uh),
5900 &action, &reason, AF_INET)) {
5901 log = action != PF_PASS;
5902 goto done;
5903 }
5904 if (dir == PF_IN && uh.uh_sum && pf_check_proto_cksum(m,
5905 off, ntohs(h->ip_len) - off, IPPROTO_UDP, AF_INET)) {
5906 action = PF_DROP;
5907 goto done;
5908 }
5710 action = pf_test_state_udp(&s, dir, ifp, m, 0, off, h, &pd);
5909 if (uh.uh_dport == 0 ||
5910 ntohs(uh.uh_ulen) > m->m_pkthdr.len - off ||
5911 ntohs(uh.uh_ulen) < sizeof(struct udphdr)) {
5912 action = PF_DROP;
5913 goto done;
5914 }
5915 action = pf_test_state_udp(&s, dir, kif, m, off, h, &pd);
5711 if (action == PF_PASS) {
5916 if (action == PF_PASS) {
5917#if NPFSYNC
5918 pfsync_update_state(s);
5919#endif
5712 r = s->rule.ptr;
5713 a = s->anchor.ptr;
5714 log = s->log;
5715 } else if (s == NULL)
5920 r = s->rule.ptr;
5921 a = s->anchor.ptr;
5922 log = s->log;
5923 } else if (s == NULL)
5716 action = pf_test_udp(&r, &s, dir, ifp,
5717 m, 0, off, h, &pd, &a, &ruleset);
5924 action = pf_test_udp(&r, &s, dir, kif,
5925 m, off, h, &pd, &a, &ruleset);
5718 break;
5719 }
5720
5721 case IPPROTO_ICMP: {
5722 struct icmp ih;
5723
5724 pd.hdr.icmp = &ih;
5725 if (!pf_pull_hdr(m, off, &ih, ICMP_MINLEN,
5726 &action, &reason, AF_INET)) {
5727 log = action != PF_PASS;
5728 goto done;
5729 }
5730 if (dir == PF_IN && pf_check_proto_cksum(m, off,
5731 ntohs(h->ip_len) - off, IPPROTO_ICMP, AF_INET)) {
5732 action = PF_DROP;
5733 goto done;
5734 }
5926 break;
5927 }
5928
5929 case IPPROTO_ICMP: {
5930 struct icmp ih;
5931
5932 pd.hdr.icmp = &ih;
5933 if (!pf_pull_hdr(m, off, &ih, ICMP_MINLEN,
5934 &action, &reason, AF_INET)) {
5935 log = action != PF_PASS;
5936 goto done;
5937 }
5938 if (dir == PF_IN && pf_check_proto_cksum(m, off,
5939 ntohs(h->ip_len) - off, IPPROTO_ICMP, AF_INET)) {
5940 action = PF_DROP;
5941 goto done;
5942 }
5735 action = pf_test_state_icmp(&s, dir, ifp, m, 0, off, h, &pd);
5943 action = pf_test_state_icmp(&s, dir, kif, m, off, h, &pd);
5736 if (action == PF_PASS) {
5944 if (action == PF_PASS) {
5945#if NPFSYNC
5946 pfsync_update_state(s);
5947#endif
5737 r = s->rule.ptr;
5948 r = s->rule.ptr;
5738 r->packets++;
5739 r->bytes += ntohs(h->ip_len);
5740 a = s->anchor.ptr;
5949 a = s->anchor.ptr;
5741 if (a != NULL) {
5742 a->packets++;
5743 a->bytes += ntohs(h->ip_len);
5744 }
5745 log = s->log;
5746 } else if (s == NULL)
5950 log = s->log;
5951 } else if (s == NULL)
5747 action = pf_test_icmp(&r, &s, dir, ifp,
5748 m, 0, off, h, &pd, &a, &ruleset);
5952 action = pf_test_icmp(&r, &s, dir, kif,
5953 m, off, h, &pd, &a, &ruleset);
5749 break;
5750 }
5751
5752 default:
5954 break;
5955 }
5956
5957 default:
5753 action = pf_test_state_other(&s, dir, ifp, &pd);
5958 action = pf_test_state_other(&s, dir, kif, &pd);
5754 if (action == PF_PASS) {
5959 if (action == PF_PASS) {
5960#if NPFSYNC
5961 pfsync_update_state(s);
5962#endif
5755 r = s->rule.ptr;
5756 a = s->anchor.ptr;
5757 log = s->log;
5758 } else if (s == NULL)
5963 r = s->rule.ptr;
5964 a = s->anchor.ptr;
5965 log = s->log;
5966 } else if (s == NULL)
5759 action = pf_test_other(&r, &s, dir, ifp, m, off, h,
5967 action = pf_test_other(&r, &s, dir, kif, m, off, h,
5760 &pd, &a, &ruleset);
5761 break;
5762 }
5763
5968 &pd, &a, &ruleset);
5969 break;
5970 }
5971
5764 if (ifp == status_ifp) {
5765 pf_status.bcounters[0][dir == PF_OUT] += pd.tot_len;
5766 pf_status.pcounters[0][dir == PF_OUT][action != PF_PASS]++;
5767 }
5768
5769done:
5972done:
5770 tr = r;
5771 if (r == &pf_default_rule && s != NULL && s->nat_rule.ptr != NULL)
5772 tr = s->nat_rule.ptr;
5773 if (tr->src.addr.type == PF_ADDR_TABLE)
5774 pfr_update_stats(tr->src.addr.p.tbl,
5775 (s == NULL || s->direction == dir) ? pd.src : pd.dst, pd.af,
5776 pd.tot_len, dir == PF_OUT, r->action == PF_PASS,
5777 tr->src.not);
5778 if (tr->dst.addr.type == PF_ADDR_TABLE)
5779 pfr_update_stats(tr->dst.addr.p.tbl,
5780 (s == NULL || s->direction == dir) ? pd.dst : pd.src, pd.af,
5781 pd.tot_len, dir == PF_OUT, r->action == PF_PASS,
5782 tr->dst.not);
5783
5784 if (action == PF_PASS && h->ip_hl > 5 &&
5785 !((s && s->allow_opts) || r->allow_opts)) {
5786 action = PF_DROP;
5787 REASON_SET(&reason, PFRES_SHORT);
5788 log = 1;
5789 DPFPRINTF(PF_DEBUG_MISC,
5790 ("pf: dropping packet with ip options\n"));
5791 }

--- 13 unchanged lines hidden (view full) ---

5805 /* add hints for ecn */
5806 atag->af = AF_INET;
5807 atag->hdr = h;
5808 m_tag_prepend(m, mtag);
5809 }
5810 }
5811#endif
5812
5973 if (action == PF_PASS && h->ip_hl > 5 &&
5974 !((s && s->allow_opts) || r->allow_opts)) {
5975 action = PF_DROP;
5976 REASON_SET(&reason, PFRES_SHORT);
5977 log = 1;
5978 DPFPRINTF(PF_DEBUG_MISC,
5979 ("pf: dropping packet with ip options\n"));
5980 }

--- 13 unchanged lines hidden (view full) ---

5994 /* add hints for ecn */
5995 atag->af = AF_INET;
5996 atag->hdr = h;
5997 m_tag_prepend(m, mtag);
5998 }
5999 }
6000#endif
6001
6002 /*
6003 * connections redirected to loopback should not match sockets
6004 * bound specifically to loopback due to security implications,
6005 * see tcp_input() and in_pcblookup_listen().
6006 */
6007 if (dir == PF_IN && action == PF_PASS && (pd.proto == IPPROTO_TCP ||
6008 pd.proto == IPPROTO_UDP) && s != NULL && s->nat_rule.ptr != NULL &&
6009 (s->nat_rule.ptr->action == PF_RDR ||
6010 s->nat_rule.ptr->action == PF_BINAT) &&
6011 (ntohl(pd.dst->v4.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET &&
6012 pf_add_mbuf_tag(m, PACKET_TAG_PF_TRANSLATE_LOCALHOST)) {
6013 action = PF_DROP;
6014 REASON_SET(&reason, PFRES_MEMORY);
6015 }
6016
5813 if (log)
6017 if (log)
5814 PFLOG_PACKET(ifp, h, m, AF_INET, dir, reason, r, a, ruleset);
6018 PFLOG_PACKET(kif, h, m, AF_INET, dir, reason, r, a, ruleset);
5815
6019
6020 kif->pfik_bytes[0][dir == PF_OUT][action != PF_PASS] += pd.tot_len;
6021 kif->pfik_packets[0][dir == PF_OUT][action != PF_PASS]++;
6022
6023 if (action == PF_PASS || r->action == PF_DROP) {
6024 r->packets++;
6025 r->bytes += pd.tot_len;
6026 if (a != NULL) {
6027 a->packets++;
6028 a->bytes += pd.tot_len;
6029 }
6030 if (s != NULL) {
6031 dirndx = (dir == s->direction) ? 0 : 1;
6032 s->packets[dirndx]++;
6033 s->bytes[dirndx] += pd.tot_len;
6034 if (s->nat_rule.ptr != NULL) {
6035 s->nat_rule.ptr->packets++;
6036 s->nat_rule.ptr->bytes += pd.tot_len;
6037 }
6038 if (s->src_node != NULL) {
6039 s->src_node->packets++;
6040 s->src_node->bytes += pd.tot_len;
6041 }
6042 if (s->nat_src_node != NULL) {
6043 s->nat_src_node->packets++;
6044 s->nat_src_node->bytes += pd.tot_len;
6045 }
6046 }
6047 tr = r;
6048 nr = (s != NULL) ? s->nat_rule.ptr : pd.nat_rule;
6049 if (nr != NULL) {
6050 struct pf_addr *x;
6051 /*
6052 * XXX: we need to make sure that the addresses
6053 * passed to pfr_update_stats() are the same than
6054 * the addresses used during matching (pfr_match)
6055 */
6056 if (r == &pf_default_rule) {
6057 tr = nr;
6058 x = (s == NULL || s->direction == dir) ?
6059 &pd.baddr : &pd.naddr;
6060 } else
6061 x = (s == NULL || s->direction == dir) ?
6062 &pd.naddr : &pd.baddr;
6063 if (x == &pd.baddr || s == NULL) {
6064 /* we need to change the address */
6065 if (dir == PF_OUT)
6066 pd.src = x;
6067 else
6068 pd.dst = x;
6069 }
6070 }
6071 if (tr->src.addr.type == PF_ADDR_TABLE)
6072 pfr_update_stats(tr->src.addr.p.tbl, (s == NULL ||
6073 s->direction == dir) ? pd.src : pd.dst, pd.af,
6074 pd.tot_len, dir == PF_OUT, r->action == PF_PASS,
6075 tr->src.not);
6076 if (tr->dst.addr.type == PF_ADDR_TABLE)
6077 pfr_update_stats(tr->dst.addr.p.tbl, (s == NULL ||
6078 s->direction == dir) ? pd.dst : pd.src, pd.af,
6079 pd.tot_len, dir == PF_OUT, r->action == PF_PASS,
6080 tr->dst.not);
6081 }
6082
6083
5816 if (action == PF_SYNPROXY_DROP) {
5817 m_freem(*m0);
5818 *m0 = NULL;
5819 action = PF_PASS;
5820 } else if (r->rt)
5821 /* pf_route can free the mbuf causing *m0 to become NULL */
5822 pf_route(m0, r, dir, ifp, s);
5823

--- 4 unchanged lines hidden (view full) ---

5828 return (action);
5829}
5830#endif /* INET */
5831
5832#ifdef INET6
5833int
5834pf_test6(int dir, struct ifnet *ifp, struct mbuf **m0)
5835{
6084 if (action == PF_SYNPROXY_DROP) {
6085 m_freem(*m0);
6086 *m0 = NULL;
6087 action = PF_PASS;
6088 } else if (r->rt)
6089 /* pf_route can free the mbuf causing *m0 to become NULL */
6090 pf_route(m0, r, dir, ifp, s);
6091

--- 4 unchanged lines hidden (view full) ---

6096 return (action);
6097}
6098#endif /* INET */
6099
6100#ifdef INET6
6101int
6102pf_test6(int dir, struct ifnet *ifp, struct mbuf **m0)
6103{
5836 u_short action, reason = 0, log = 0;
5837 struct mbuf *m = *m0;
5838 struct ip6_hdr *h = NULL; /* make the compiler happy */
5839 struct pf_rule *a = NULL, *r = &pf_default_rule, *tr;
5840 struct pf_state *s = NULL;
5841 struct pf_ruleset *ruleset = NULL;
5842 struct pf_pdesc pd;
5843 int off, terminal = 0;
6104 struct pfi_kif *kif;
6105 u_short action, reason = 0, log = 0;
6106 struct mbuf *m = *m0;
6107 struct ip6_hdr *h = NULL; /* make the compiler happy */
6108 struct pf_rule *a = NULL, *r = &pf_default_rule, *tr, *nr;
6109 struct pf_state *s = NULL;
6110 struct pf_ruleset *ruleset = NULL;
6111 struct pf_pdesc pd;
6112 int off, terminal = 0, dirndx;
5844
5845#ifdef __FreeBSD__
5846 PF_LOCK();
5847#endif
5848
5849 if (!pf_status.running ||
5850 (m_tag_find(m, PACKET_TAG_PF_GENERATED, NULL) != NULL)) {
5851#ifdef __FreeBSD__
5852 PF_UNLOCK();
5853#endif
5854 return (PF_PASS);
5855 }
5856
6113
6114#ifdef __FreeBSD__
6115 PF_LOCK();
6116#endif
6117
6118 if (!pf_status.running ||
6119 (m_tag_find(m, PACKET_TAG_PF_GENERATED, NULL) != NULL)) {
6120#ifdef __FreeBSD__
6121 PF_UNLOCK();
6122#endif
6123 return (PF_PASS);
6124 }
6125
5857#if defined(__FreeBSD__) && (__FreeBSD_version >= 501000)
6126 kif = pfi_index2kif[ifp->if_index];
6127 if (kif == NULL) {
6128#ifdef __FreeBSD__
6129 PF_UNLOCK();
6130#endif
6131 return (PF_DROP);
6132 }
6133
6134#ifdef __FreeBSD__
5858 M_ASSERTPKTHDR(m);
5859#else
5860#ifdef DIAGNOSTIC
5861 if ((m->m_flags & M_PKTHDR) == 0)
5862 panic("non-M_PKTHDR is passed to pf_test");
5863#endif
5864#endif
5865
6135 M_ASSERTPKTHDR(m);
6136#else
6137#ifdef DIAGNOSTIC
6138 if ((m->m_flags & M_PKTHDR) == 0)
6139 panic("non-M_PKTHDR is passed to pf_test");
6140#endif
6141#endif
6142
6143 memset(&pd, 0, sizeof(pd));
5866 if (m->m_pkthdr.len < (int)sizeof(*h)) {
5867 action = PF_DROP;
5868 REASON_SET(&reason, PFRES_SHORT);
5869 log = 1;
5870 goto done;
5871 }
5872
5873 /* We do IP header normalization and packet reassembly here */
6144 if (m->m_pkthdr.len < (int)sizeof(*h)) {
6145 action = PF_DROP;
6146 REASON_SET(&reason, PFRES_SHORT);
6147 log = 1;
6148 goto done;
6149 }
6150
6151 /* We do IP header normalization and packet reassembly here */
5874 if (pf_normalize_ip6(m0, dir, ifp, &reason) != PF_PASS) {
6152 if (pf_normalize_ip6(m0, dir, kif, &reason) != PF_PASS) {
5875 action = PF_DROP;
5876 goto done;
5877 }
5878 m = *m0;
5879 h = mtod(m, struct ip6_hdr *);
5880
6153 action = PF_DROP;
6154 goto done;
6155 }
6156 m = *m0;
6157 h = mtod(m, struct ip6_hdr *);
6158
5881 memset(&pd, 0, sizeof(pd));
5882 pd.src = (struct pf_addr *)&h->ip6_src;
5883 pd.dst = (struct pf_addr *)&h->ip6_dst;
6159 pd.src = (struct pf_addr *)&h->ip6_src;
6160 pd.dst = (struct pf_addr *)&h->ip6_dst;
6161 PF_ACPY(&pd.baddr, dir == PF_OUT ? pd.src : pd.dst, AF_INET6);
5884 pd.ip_sum = NULL;
5885 pd.af = AF_INET6;
5886 pd.tos = 0;
5887 pd.tot_len = ntohs(h->ip6_plen) + sizeof(struct ip6_hdr);
5888
5889 off = ((caddr_t)h - m->m_data) + sizeof(struct ip6_hdr);
5890 pd.proto = h->ip6_nxt;
5891 do {
5892 switch (pd.proto) {
5893 case IPPROTO_FRAGMENT:
6162 pd.ip_sum = NULL;
6163 pd.af = AF_INET6;
6164 pd.tos = 0;
6165 pd.tot_len = ntohs(h->ip6_plen) + sizeof(struct ip6_hdr);
6166
6167 off = ((caddr_t)h - m->m_data) + sizeof(struct ip6_hdr);
6168 pd.proto = h->ip6_nxt;
6169 do {
6170 switch (pd.proto) {
6171 case IPPROTO_FRAGMENT:
5894 action = pf_test_fragment(&r, dir, ifp, m, h,
6172 action = pf_test_fragment(&r, dir, kif, m, h,
5895 &pd, &a, &ruleset);
5896 if (action == PF_DROP)
5897 REASON_SET(&reason, PFRES_FRAG);
5898 goto done;
5899 case IPPROTO_AH:
5900 case IPPROTO_HOPOPTS:
5901 case IPPROTO_ROUTING:
5902 case IPPROTO_DSTOPTS: {

--- 35 unchanged lines hidden (view full) ---

5938 goto done;
5939 }
5940 if (dir == PF_IN && pf_check_proto_cksum(m, off,
5941 ntohs(h->ip6_plen), IPPROTO_TCP, AF_INET6)) {
5942 action = PF_DROP;
5943 goto done;
5944 }
5945 pd.p_len = pd.tot_len - off - (th.th_off << 2);
6173 &pd, &a, &ruleset);
6174 if (action == PF_DROP)
6175 REASON_SET(&reason, PFRES_FRAG);
6176 goto done;
6177 case IPPROTO_AH:
6178 case IPPROTO_HOPOPTS:
6179 case IPPROTO_ROUTING:
6180 case IPPROTO_DSTOPTS: {

--- 35 unchanged lines hidden (view full) ---

6216 goto done;
6217 }
6218 if (dir == PF_IN && pf_check_proto_cksum(m, off,
6219 ntohs(h->ip6_plen), IPPROTO_TCP, AF_INET6)) {
6220 action = PF_DROP;
6221 goto done;
6222 }
6223 pd.p_len = pd.tot_len - off - (th.th_off << 2);
5946 action = pf_normalize_tcp(dir, ifp, m, 0, off, h, &pd);
6224 action = pf_normalize_tcp(dir, kif, m, 0, off, h, &pd);
5947 if (action == PF_DROP)
6225 if (action == PF_DROP)
5948 break;
5949 action = pf_test_state_tcp(&s, dir, ifp, m, 0, off, h, &pd,
6226 goto done;
6227 action = pf_test_state_tcp(&s, dir, kif, m, off, h, &pd,
5950 &reason);
5951 if (action == PF_PASS) {
6228 &reason);
6229 if (action == PF_PASS) {
6230#if NPFSYNC
6231 pfsync_update_state(s);
6232#endif
5952 r = s->rule.ptr;
6233 r = s->rule.ptr;
6234 a = s->anchor.ptr;
5953 log = s->log;
5954 } else if (s == NULL)
6235 log = s->log;
6236 } else if (s == NULL)
5955 action = pf_test_tcp(&r, &s, dir, ifp,
5956 m, 0, off, h, &pd, &a, &ruleset);
6237 action = pf_test_tcp(&r, &s, dir, kif,
6238 m, off, h, &pd, &a, &ruleset);
5957 break;
5958 }
5959
5960 case IPPROTO_UDP: {
5961 struct udphdr uh;
5962
5963 pd.hdr.udp = &uh;
5964 if (!pf_pull_hdr(m, off, &uh, sizeof(uh),
5965 &action, &reason, AF_INET6)) {
5966 log = action != PF_PASS;
5967 goto done;
5968 }
5969 if (dir == PF_IN && uh.uh_sum && pf_check_proto_cksum(m,
5970 off, ntohs(h->ip6_plen), IPPROTO_UDP, AF_INET6)) {
5971 action = PF_DROP;
5972 goto done;
5973 }
6239 break;
6240 }
6241
6242 case IPPROTO_UDP: {
6243 struct udphdr uh;
6244
6245 pd.hdr.udp = &uh;
6246 if (!pf_pull_hdr(m, off, &uh, sizeof(uh),
6247 &action, &reason, AF_INET6)) {
6248 log = action != PF_PASS;
6249 goto done;
6250 }
6251 if (dir == PF_IN && uh.uh_sum && pf_check_proto_cksum(m,
6252 off, ntohs(h->ip6_plen), IPPROTO_UDP, AF_INET6)) {
6253 action = PF_DROP;
6254 goto done;
6255 }
5974 action = pf_test_state_udp(&s, dir, ifp, m, 0, off, h, &pd);
6256 if (uh.uh_dport == 0 ||
6257 ntohs(uh.uh_ulen) > m->m_pkthdr.len - off ||
6258 ntohs(uh.uh_ulen) < sizeof(struct udphdr)) {
6259 action = PF_DROP;
6260 goto done;
6261 }
6262 action = pf_test_state_udp(&s, dir, kif, m, off, h, &pd);
5975 if (action == PF_PASS) {
6263 if (action == PF_PASS) {
6264#if NPFSYNC
6265 pfsync_update_state(s);
6266#endif
5976 r = s->rule.ptr;
6267 r = s->rule.ptr;
6268 a = s->anchor.ptr;
5977 log = s->log;
5978 } else if (s == NULL)
6269 log = s->log;
6270 } else if (s == NULL)
5979 action = pf_test_udp(&r, &s, dir, ifp,
5980 m, 0, off, h, &pd, &a, &ruleset);
6271 action = pf_test_udp(&r, &s, dir, kif,
6272 m, off, h, &pd, &a, &ruleset);
5981 break;
5982 }
5983
5984 case IPPROTO_ICMPV6: {
5985 struct icmp6_hdr ih;
5986
5987 pd.hdr.icmp6 = &ih;
5988 if (!pf_pull_hdr(m, off, &ih, sizeof(ih),
5989 &action, &reason, AF_INET6)) {
5990 log = action != PF_PASS;
5991 goto done;
5992 }
5993 if (dir == PF_IN && pf_check_proto_cksum(m, off,
5994 ntohs(h->ip6_plen), IPPROTO_ICMPV6, AF_INET6)) {
5995 action = PF_DROP;
5996 goto done;
5997 }
6273 break;
6274 }
6275
6276 case IPPROTO_ICMPV6: {
6277 struct icmp6_hdr ih;
6278
6279 pd.hdr.icmp6 = &ih;
6280 if (!pf_pull_hdr(m, off, &ih, sizeof(ih),
6281 &action, &reason, AF_INET6)) {
6282 log = action != PF_PASS;
6283 goto done;
6284 }
6285 if (dir == PF_IN && pf_check_proto_cksum(m, off,
6286 ntohs(h->ip6_plen), IPPROTO_ICMPV6, AF_INET6)) {
6287 action = PF_DROP;
6288 goto done;
6289 }
5998 action = pf_test_state_icmp(&s, dir, ifp,
5999 m, 0, off, h, &pd);
6290 action = pf_test_state_icmp(&s, dir, kif,
6291 m, off, h, &pd);
6000 if (action == PF_PASS) {
6292 if (action == PF_PASS) {
6293#if NPFSYNC
6294 pfsync_update_state(s);
6295#endif
6001 r = s->rule.ptr;
6296 r = s->rule.ptr;
6002 r->packets++;
6003 r->bytes += h->ip6_plen;
6297 a = s->anchor.ptr;
6004 log = s->log;
6005 } else if (s == NULL)
6298 log = s->log;
6299 } else if (s == NULL)
6006 action = pf_test_icmp(&r, &s, dir, ifp,
6007 m, 0, off, h, &pd, &a, &ruleset);
6300 action = pf_test_icmp(&r, &s, dir, kif,
6301 m, off, h, &pd, &a, &ruleset);
6008 break;
6009 }
6010
6011 default:
6302 break;
6303 }
6304
6305 default:
6012 action = pf_test_other(&r, &s, dir, ifp, m, off, h,
6013 &pd, &a, &ruleset);
6306 action = pf_test_state_other(&s, dir, kif, &pd);
6307 if (action == PF_PASS) {
6308 r = s->rule.ptr;
6309 a = s->anchor.ptr;
6310 log = s->log;
6311 } else if (s == NULL)
6312 action = pf_test_other(&r, &s, dir, kif, m, off, h,
6313 &pd, &a, &ruleset);
6014 break;
6015 }
6016
6314 break;
6315 }
6316
6017 if (ifp == status_ifp) {
6018 pf_status.bcounters[1][dir == PF_OUT] += pd.tot_len;
6019 pf_status.pcounters[1][dir == PF_OUT][action != PF_PASS]++;
6020 }
6021
6022done:
6317done:
6023 tr = r;
6024 if (r == &pf_default_rule && s != NULL && s->nat_rule.ptr != NULL)
6025 tr = s->nat_rule.ptr;
6026 if (tr->src.addr.type == PF_ADDR_TABLE)
6027 pfr_update_stats(tr->src.addr.p.tbl,
6028 (s == NULL || s->direction == dir) ? pd.src : pd.dst, pd.af,
6029 pd.tot_len, dir == PF_OUT, r->action == PF_PASS,
6030 tr->src.not);
6031 if (tr->dst.addr.type == PF_ADDR_TABLE)
6032 pfr_update_stats(tr->dst.addr.p.tbl,
6033 (s == NULL || s->direction == dir) ? pd.dst : pd.src, pd.af,
6034 pd.tot_len, dir == PF_OUT, r->action == PF_PASS,
6035 tr->dst.not);
6036
6037 /* XXX handle IPv6 options, if not allowed. not implemented. */
6038
6039#ifdef ALTQ
6040 if (action == PF_PASS && r->qid) {
6041 struct m_tag *mtag;
6042 struct altq_tag *atag;
6043
6044 mtag = m_tag_get(PACKET_TAG_PF_QID, sizeof(*atag), M_NOWAIT);

--- 6 unchanged lines hidden (view full) ---

6051 /* add hints for ecn */
6052 atag->af = AF_INET6;
6053 atag->hdr = h;
6054 m_tag_prepend(m, mtag);
6055 }
6056 }
6057#endif
6058
6318 /* XXX handle IPv6 options, if not allowed. not implemented. */
6319
6320#ifdef ALTQ
6321 if (action == PF_PASS && r->qid) {
6322 struct m_tag *mtag;
6323 struct altq_tag *atag;
6324
6325 mtag = m_tag_get(PACKET_TAG_PF_QID, sizeof(*atag), M_NOWAIT);

--- 6 unchanged lines hidden (view full) ---

6332 /* add hints for ecn */
6333 atag->af = AF_INET6;
6334 atag->hdr = h;
6335 m_tag_prepend(m, mtag);
6336 }
6337 }
6338#endif
6339
6340 if (dir == PF_IN && action == PF_PASS && (pd.proto == IPPROTO_TCP ||
6341 pd.proto == IPPROTO_UDP) && s != NULL && s->nat_rule.ptr != NULL &&
6342 (s->nat_rule.ptr->action == PF_RDR ||
6343 s->nat_rule.ptr->action == PF_BINAT) &&
6344 IN6_IS_ADDR_LOOPBACK(&pd.dst->v6) &&
6345 pf_add_mbuf_tag(m, PACKET_TAG_PF_TRANSLATE_LOCALHOST)) {
6346 action = PF_DROP;
6347 REASON_SET(&reason, PFRES_MEMORY);
6348 }
6349
6059 if (log)
6350 if (log)
6060 PFLOG_PACKET(ifp, h, m, AF_INET6, dir, reason, r, a, ruleset);
6351 PFLOG_PACKET(kif, h, m, AF_INET6, dir, reason, r, a, ruleset);
6061
6352
6353 kif->pfik_bytes[1][dir == PF_OUT][action != PF_PASS] += pd.tot_len;
6354 kif->pfik_packets[1][dir == PF_OUT][action != PF_PASS]++;
6355
6356 if (action == PF_PASS || r->action == PF_DROP) {
6357 r->packets++;
6358 r->bytes += pd.tot_len;
6359 if (a != NULL) {
6360 a->packets++;
6361 a->bytes += pd.tot_len;
6362 }
6363 if (s != NULL) {
6364 dirndx = (dir == s->direction) ? 0 : 1;
6365 s->packets[dirndx]++;
6366 s->bytes[dirndx] += pd.tot_len;
6367 if (s->nat_rule.ptr != NULL) {
6368 s->nat_rule.ptr->packets++;
6369 s->nat_rule.ptr->bytes += pd.tot_len;
6370 }
6371 if (s->src_node != NULL) {
6372 s->src_node->packets++;
6373 s->src_node->bytes += pd.tot_len;
6374 }
6375 if (s->nat_src_node != NULL) {
6376 s->nat_src_node->packets++;
6377 s->nat_src_node->bytes += pd.tot_len;
6378 }
6379 }
6380 tr = r;
6381 nr = (s != NULL) ? s->nat_rule.ptr : pd.nat_rule;
6382 if (nr != NULL) {
6383 struct pf_addr *x;
6384 /*
6385 * XXX: we need to make sure that the addresses
6386 * passed to pfr_update_stats() are the same than
6387 * the addresses used during matching (pfr_match)
6388 */
6389 if (r == &pf_default_rule) {
6390 tr = nr;
6391 x = (s == NULL || s->direction == dir) ?
6392 &pd.baddr : &pd.naddr;
6393 } else {
6394 x = (s == NULL || s->direction == dir) ?
6395 &pd.naddr : &pd.baddr;
6396 }
6397 if (x == &pd.baddr || s == NULL) {
6398 if (dir == PF_OUT)
6399 pd.src = x;
6400 else
6401 pd.dst = x;
6402 }
6403 }
6404 if (tr->src.addr.type == PF_ADDR_TABLE)
6405 pfr_update_stats(tr->src.addr.p.tbl, (s == NULL ||
6406 s->direction == dir) ? pd.src : pd.dst, pd.af,
6407 pd.tot_len, dir == PF_OUT, r->action == PF_PASS,
6408 tr->src.not);
6409 if (tr->dst.addr.type == PF_ADDR_TABLE)
6410 pfr_update_stats(tr->dst.addr.p.tbl, (s == NULL ||
6411 s->direction == dir) ? pd.dst : pd.src, pd.af,
6412 pd.tot_len, dir == PF_OUT, r->action == PF_PASS,
6413 tr->dst.not);
6414 }
6415
6416
6062 if (action == PF_SYNPROXY_DROP) {
6063 m_freem(*m0);
6064 *m0 = NULL;
6065 action = PF_PASS;
6066 } else if (r->rt)
6067 /* pf_route6 can free the mbuf causing *m0 to become NULL */
6068 pf_route6(m0, r, dir, ifp, s);
6069
6070#ifdef __FreeBSD__
6071 PF_UNLOCK();
6072#endif
6073 return (action);
6074}
6075#endif /* INET6 */
6417 if (action == PF_SYNPROXY_DROP) {
6418 m_freem(*m0);
6419 *m0 = NULL;
6420 action = PF_PASS;
6421 } else if (r->rt)
6422 /* pf_route6 can free the mbuf causing *m0 to become NULL */
6423 pf_route6(m0, r, dir, ifp, s);
6424
6425#ifdef __FreeBSD__
6426 PF_UNLOCK();
6427#endif
6428 return (action);
6429}
6430#endif /* INET6 */