1 /* $OpenBSD: pf_print_state.c,v 1.52 2008/08/12 16:40:18 david Exp $ */
2
3 /*-
4 * SPDX-License-Identifier: BSD-2-Clause
5 *
6 * Copyright (c) 2001 Daniel Hartmeier
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.
15 * - Redistributions in binary form must reproduce the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer in the documentation and/or other materials provided
18 * with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
28 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
30 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 *
33 */
34
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
37
38 #include <sys/types.h>
39 #include <sys/socket.h>
40 #include <sys/endian.h>
41 #include <net/if.h>
42 #define TCPSTATES
43 #include <netinet/tcp_fsm.h>
44 #include <net/pfvar.h>
45 #include <arpa/inet.h>
46 #include <netdb.h>
47
48 #include <stdint.h>
49 #include <stdio.h>
50 #include <string.h>
51
52 #include "pfctl_parser.h"
53 #include "pfctl.h"
54
55 void print_name(struct pf_addr *, sa_family_t);
56
57 void
print_addr(struct pf_addr_wrap * addr,sa_family_t af,int verbose)58 print_addr(struct pf_addr_wrap *addr, sa_family_t af, int verbose)
59 {
60 switch (addr->type) {
61 case PF_ADDR_DYNIFTL:
62 printf("(%s", addr->v.ifname);
63 if (addr->iflags & PFI_AFLAG_NETWORK)
64 printf(":network");
65 if (addr->iflags & PFI_AFLAG_BROADCAST)
66 printf(":broadcast");
67 if (addr->iflags & PFI_AFLAG_PEER)
68 printf(":peer");
69 if (addr->iflags & PFI_AFLAG_NOALIAS)
70 printf(":0");
71 if (verbose) {
72 if (addr->p.dyncnt <= 0)
73 printf(":*");
74 else
75 printf(":%d", addr->p.dyncnt);
76 }
77 printf(")");
78 break;
79 case PF_ADDR_TABLE:
80 if (verbose)
81 if (addr->p.tblcnt == -1)
82 printf("<%s:*>", addr->v.tblname);
83 else
84 printf("<%s:%d>", addr->v.tblname,
85 addr->p.tblcnt);
86 else
87 printf("<%s>", addr->v.tblname);
88 return;
89 case PF_ADDR_RANGE: {
90 char buf[48];
91
92 if (inet_ntop(af, &addr->v.a.addr, buf, sizeof(buf)) == NULL)
93 printf("?");
94 else
95 printf("%s", buf);
96 if (inet_ntop(af, &addr->v.a.mask, buf, sizeof(buf)) == NULL)
97 printf(" - ?");
98 else
99 printf(" - %s", buf);
100 break;
101 }
102 case PF_ADDR_ADDRMASK:
103 if (PF_AZERO(&addr->v.a.addr, AF_INET6) &&
104 PF_AZERO(&addr->v.a.mask, AF_INET6))
105 printf("any");
106 else {
107 char buf[48];
108
109 if (inet_ntop(af, &addr->v.a.addr, buf,
110 sizeof(buf)) == NULL)
111 printf("?");
112 else
113 printf("%s", buf);
114 }
115 break;
116 case PF_ADDR_NOROUTE:
117 printf("no-route");
118 return;
119 case PF_ADDR_URPFFAILED:
120 printf("urpf-failed");
121 return;
122 default:
123 printf("?");
124 return;
125 }
126
127 /* mask if not _both_ address and mask are zero */
128 if (addr->type != PF_ADDR_RANGE &&
129 !(PF_AZERO(&addr->v.a.addr, AF_INET6) &&
130 PF_AZERO(&addr->v.a.mask, AF_INET6))) {
131 int bits = unmask(&addr->v.a.mask, af);
132
133 if (bits != (af == AF_INET ? 32 : 128))
134 printf("/%d", bits);
135 }
136 }
137
138 void
print_name(struct pf_addr * addr,sa_family_t af)139 print_name(struct pf_addr *addr, sa_family_t af)
140 {
141 char host[NI_MAXHOST];
142
143 strlcpy(host, "?", sizeof(host));
144 switch (af) {
145 case AF_INET: {
146 struct sockaddr_in sin;
147
148 memset(&sin, 0, sizeof(sin));
149 sin.sin_len = sizeof(sin);
150 sin.sin_family = AF_INET;
151 sin.sin_addr = addr->v4;
152 getnameinfo((struct sockaddr *)&sin, sin.sin_len,
153 host, sizeof(host), NULL, 0, NI_NOFQDN);
154 break;
155 }
156 case AF_INET6: {
157 struct sockaddr_in6 sin6;
158
159 memset(&sin6, 0, sizeof(sin6));
160 sin6.sin6_len = sizeof(sin6);
161 sin6.sin6_family = AF_INET6;
162 sin6.sin6_addr = addr->v6;
163 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
164 host, sizeof(host), NULL, 0, NI_NOFQDN);
165 break;
166 }
167 }
168 printf("%s", host);
169 }
170
171 void
print_host(struct pf_addr * addr,u_int16_t port,sa_family_t af,int opts)172 print_host(struct pf_addr *addr, u_int16_t port, sa_family_t af, int opts)
173 {
174 if (opts & PF_OPT_USEDNS)
175 print_name(addr, af);
176 else {
177 struct pf_addr_wrap aw;
178
179 memset(&aw, 0, sizeof(aw));
180 aw.v.a.addr = *addr;
181 if (af == AF_INET)
182 aw.v.a.mask.addr32[0] = 0xffffffff;
183 else {
184 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask));
185 af = AF_INET6;
186 }
187 print_addr(&aw, af, opts & PF_OPT_VERBOSE2);
188 }
189
190 if (port) {
191 if (af == AF_INET)
192 printf(":%u", ntohs(port));
193 else
194 printf("[%u]", ntohs(port));
195 }
196 }
197
198 void
print_seq(struct pfsync_state_peer * p)199 print_seq(struct pfsync_state_peer *p)
200 {
201 if (p->seqdiff)
202 printf("[%u + %u](+%u)", ntohl(p->seqlo),
203 ntohl(p->seqhi) - ntohl(p->seqlo), ntohl(p->seqdiff));
204 else
205 printf("[%u + %u]", ntohl(p->seqlo),
206 ntohl(p->seqhi) - ntohl(p->seqlo));
207 }
208
209 void
print_state(struct pfsync_state * s,int opts)210 print_state(struct pfsync_state *s, int opts)
211 {
212 struct pfsync_state_peer *src, *dst;
213 struct pfsync_state_key *key, *sk, *nk;
214 struct protoent *p;
215 int min, sec;
216 #ifndef __NO_STRICT_ALIGNMENT
217 struct pfsync_state_key aligned_key[2];
218
219 bcopy(&s->key, aligned_key, sizeof(aligned_key));
220 key = aligned_key;
221 #else
222 key = s->key;
223 #endif
224
225 if (s->direction == PF_OUT) {
226 src = &s->src;
227 dst = &s->dst;
228 sk = &key[PF_SK_STACK];
229 nk = &key[PF_SK_WIRE];
230 if (s->proto == IPPROTO_ICMP || s->proto == IPPROTO_ICMPV6)
231 sk->port[0] = nk->port[0];
232 } else {
233 src = &s->dst;
234 dst = &s->src;
235 sk = &key[PF_SK_WIRE];
236 nk = &key[PF_SK_STACK];
237 if (s->proto == IPPROTO_ICMP || s->proto == IPPROTO_ICMPV6)
238 sk->port[1] = nk->port[1];
239 }
240 printf("%s ", s->ifname);
241 if ((p = getprotobynumber(s->proto)) != NULL)
242 printf("%s ", p->p_name);
243 else
244 printf("%u ", s->proto);
245
246 print_host(&nk->addr[1], nk->port[1], s->af, opts);
247 if (PF_ANEQ(&nk->addr[1], &sk->addr[1], s->af) ||
248 nk->port[1] != sk->port[1]) {
249 printf(" (");
250 print_host(&sk->addr[1], sk->port[1], s->af, opts);
251 printf(")");
252 }
253 if (s->direction == PF_OUT)
254 printf(" -> ");
255 else
256 printf(" <- ");
257 print_host(&nk->addr[0], nk->port[0], s->af, opts);
258 if (PF_ANEQ(&nk->addr[0], &sk->addr[0], s->af) ||
259 nk->port[0] != sk->port[0]) {
260 printf(" (");
261 print_host(&sk->addr[0], sk->port[0], s->af, opts);
262 printf(")");
263 }
264
265 printf(" ");
266 if (s->proto == IPPROTO_TCP) {
267 if (src->state <= TCPS_TIME_WAIT &&
268 dst->state <= TCPS_TIME_WAIT)
269 printf(" %s:%s\n", tcpstates[src->state],
270 tcpstates[dst->state]);
271 else if (src->state == PF_TCPS_PROXY_SRC ||
272 dst->state == PF_TCPS_PROXY_SRC)
273 printf(" PROXY:SRC\n");
274 else if (src->state == PF_TCPS_PROXY_DST ||
275 dst->state == PF_TCPS_PROXY_DST)
276 printf(" PROXY:DST\n");
277 else
278 printf(" <BAD STATE LEVELS %u:%u>\n",
279 src->state, dst->state);
280 if (opts & PF_OPT_VERBOSE) {
281 printf(" ");
282 print_seq(src);
283 if (src->wscale && dst->wscale)
284 printf(" wscale %u",
285 src->wscale & PF_WSCALE_MASK);
286 printf(" ");
287 print_seq(dst);
288 if (src->wscale && dst->wscale)
289 printf(" wscale %u",
290 dst->wscale & PF_WSCALE_MASK);
291 printf("\n");
292 }
293 } else if (s->proto == IPPROTO_UDP && src->state < PFUDPS_NSTATES &&
294 dst->state < PFUDPS_NSTATES) {
295 const char *states[] = PFUDPS_NAMES;
296
297 printf(" %s:%s\n", states[src->state], states[dst->state]);
298 #ifndef INET6
299 } else if (s->proto != IPPROTO_ICMP && src->state < PFOTHERS_NSTATES &&
300 dst->state < PFOTHERS_NSTATES) {
301 #else
302 } else if (s->proto != IPPROTO_ICMP && s->proto != IPPROTO_ICMPV6 &&
303 src->state < PFOTHERS_NSTATES && dst->state < PFOTHERS_NSTATES) {
304 #endif
305 /* XXX ICMP doesn't really have state levels */
306 const char *states[] = PFOTHERS_NAMES;
307
308 printf(" %s:%s\n", states[src->state], states[dst->state]);
309 } else {
310 printf(" %u:%u\n", src->state, dst->state);
311 }
312
313 if (opts & PF_OPT_VERBOSE) {
314 u_int64_t packets[2];
315 u_int64_t bytes[2];
316 u_int32_t creation = ntohl(s->creation);
317 u_int32_t expire = ntohl(s->expire);
318
319 sec = creation % 60;
320 creation /= 60;
321 min = creation % 60;
322 creation /= 60;
323 printf(" age %.2u:%.2u:%.2u", creation, min, sec);
324 sec = expire % 60;
325 expire /= 60;
326 min = expire % 60;
327 expire /= 60;
328 printf(", expires in %.2u:%.2u:%.2u", expire, min, sec);
329
330 bcopy(s->packets[0], &packets[0], sizeof(u_int64_t));
331 bcopy(s->packets[1], &packets[1], sizeof(u_int64_t));
332 bcopy(s->bytes[0], &bytes[0], sizeof(u_int64_t));
333 bcopy(s->bytes[1], &bytes[1], sizeof(u_int64_t));
334 printf(", %ju:%ju pkts, %ju:%ju bytes",
335 (uintmax_t )be64toh(packets[0]),
336 (uintmax_t )be64toh(packets[1]),
337 (uintmax_t )be64toh(bytes[0]),
338 (uintmax_t )be64toh(bytes[1]));
339 if (ntohl(s->anchor) != -1)
340 printf(", anchor %u", ntohl(s->anchor));
341 if (ntohl(s->rule) != -1)
342 printf(", rule %u", ntohl(s->rule));
343 if (s->state_flags & PFSTATE_SLOPPY)
344 printf(", sloppy");
345 if (s->sync_flags & PFSYNC_FLAG_SRCNODE)
346 printf(", source-track");
347 if (s->sync_flags & PFSYNC_FLAG_NATSRCNODE)
348 printf(", sticky-address");
349 printf("\n");
350 }
351 if (opts & PF_OPT_VERBOSE2) {
352 u_int64_t id;
353
354 bcopy(&s->id, &id, sizeof(u_int64_t));
355 printf(" id: %016jx creatorid: %08x",
356 (uintmax_t )be64toh(id), ntohl(s->creatorid));
357 printf("\n");
358 }
359 }
360
361 int
unmask(struct pf_addr * m,sa_family_t af)362 unmask(struct pf_addr *m, sa_family_t af)
363 {
364 int i = 31, j = 0, b = 0;
365 u_int32_t tmp;
366
367 while (j < 4 && m->addr32[j] == 0xffffffff) {
368 b += 32;
369 j++;
370 }
371 if (j < 4) {
372 tmp = ntohl(m->addr32[j]);
373 for (i = 31; tmp & (1 << i); --i)
374 b++;
375 }
376 return (b);
377 }
378