1/* $OpenBSD: pf_print_state.c,v 1.52 2008/08/12 16:40:18 david Exp $ */
2
3/*
4 * Copyright (c) 2001 Daniel Hartmeier
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * - Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
16 * with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 *
31 */
32
33#include <sys/cdefs.h>
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35
36#include <sys/types.h>
37#include <sys/socket.h>
38#ifdef __FreeBSD__
39#include <sys/endian.h>
40#define betoh64 be64toh
41#endif
42#include <net/if.h>
43#define TCPSTATES
44#include <netinet/tcp_fsm.h>
45#include <net/pfvar.h>
46#include <arpa/inet.h>
47#include <netdb.h>
48
49#include <stdio.h>
50#include <string.h>
51
52#include "pfctl_parser.h"
53#include "pfctl.h"
54
55void print_name(struct pf_addr *, sa_family_t);
56
57void
58print_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;
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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
138void
139print_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
171void
172print_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
198void
199print_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
209void
210print_state(struct pfsync_state *s, int opts)
211{
212 struct pfsync_state_peer *src, *dst;
213 struct pfsync_state_key *sk, *nk;
214 struct protoent *p;
215 int min, sec;
216
217 if (s->direction == PF_OUT) {
218 src = &s->src;
219 dst = &s->dst;
220 sk = &s->key[PF_SK_STACK];
221 nk = &s->key[PF_SK_WIRE];
222 if (s->proto == IPPROTO_ICMP || s->proto == IPPROTO_ICMPV6)
223 sk->port[0] = nk->port[0];
224 } else {
225 src = &s->dst;
226 dst = &s->src;
227 sk = &s->key[PF_SK_WIRE];
228 nk = &s->key[PF_SK_STACK];
229 if (s->proto == IPPROTO_ICMP || s->proto == IPPROTO_ICMPV6)
230 sk->port[1] = nk->port[1];
231 }
232 printf("%s ", s->ifname);
233 if ((p = getprotobynumber(s->proto)) != NULL)
234 printf("%s ", p->p_name);
235 else
236 printf("%u ", s->proto);
237
238 print_host(&nk->addr[1], nk->port[1], s->af, opts);
239 if (PF_ANEQ(&nk->addr[1], &sk->addr[1], s->af) ||
240 nk->port[1] != sk->port[1]) {
241 printf(" (");
242 print_host(&sk->addr[1], sk->port[1], s->af, opts);
243 printf(")");
244 }
245 if (s->direction == PF_OUT)
246 printf(" -> ");
247 else
248 printf(" <- ");
249 print_host(&nk->addr[0], nk->port[0], s->af, opts);
250 if (PF_ANEQ(&nk->addr[0], &sk->addr[0], s->af) ||
251 nk->port[0] != sk->port[0]) {
252 printf(" (");
253 print_host(&sk->addr[0], sk->port[0], s->af, opts);
254 printf(")");
255 }
256
257 printf(" ");
258 if (s->proto == IPPROTO_TCP) {
259 if (src->state <= TCPS_TIME_WAIT &&
260 dst->state <= TCPS_TIME_WAIT)
261 printf(" %s:%s\n", tcpstates[src->state],
262 tcpstates[dst->state]);
263 else if (src->state == PF_TCPS_PROXY_SRC ||
264 dst->state == PF_TCPS_PROXY_SRC)
265 printf(" PROXY:SRC\n");
266 else if (src->state == PF_TCPS_PROXY_DST ||
267 dst->state == PF_TCPS_PROXY_DST)
268 printf(" PROXY:DST\n");
269 else
270 printf(" <BAD STATE LEVELS %u:%u>\n",
271 src->state, dst->state);
272 if (opts & PF_OPT_VERBOSE) {
273 printf(" ");
274 print_seq(src);
275 if (src->wscale && dst->wscale)
276 printf(" wscale %u",
277 src->wscale & PF_WSCALE_MASK);
278 printf(" ");
279 print_seq(dst);
280 if (src->wscale && dst->wscale)
281 printf(" wscale %u",
282 dst->wscale & PF_WSCALE_MASK);
283 printf("\n");
284 }
285 } else if (s->proto == IPPROTO_UDP && src->state < PFUDPS_NSTATES &&
286 dst->state < PFUDPS_NSTATES) {
287 const char *states[] = PFUDPS_NAMES;
288
289 printf(" %s:%s\n", states[src->state], states[dst->state]);
290 } else if (s->proto != IPPROTO_ICMP && src->state < PFOTHERS_NSTATES &&
291 dst->state < PFOTHERS_NSTATES) {
292 /* XXX ICMP doesn't really have state levels */
293 const char *states[] = PFOTHERS_NAMES;
294
295 printf(" %s:%s\n", states[src->state], states[dst->state]);
296 } else {
297 printf(" %u:%u\n", src->state, dst->state);
298 }
299
300 if (opts & PF_OPT_VERBOSE) {
301 u_int64_t packets[2];
302 u_int64_t bytes[2];
303 u_int32_t creation = ntohl(s->creation);
304 u_int32_t expire = ntohl(s->expire);
305
306 sec = creation % 60;
307 creation /= 60;
308 min = creation % 60;
309 creation /= 60;
310 printf(" age %.2u:%.2u:%.2u", creation, min, sec);
311 sec = expire % 60;
312 expire /= 60;
313 min = expire % 60;
314 expire /= 60;
315 printf(", expires in %.2u:%.2u:%.2u", expire, min, sec);
316
317 bcopy(s->packets[0], &packets[0], sizeof(u_int64_t));
318 bcopy(s->packets[1], &packets[1], sizeof(u_int64_t));
319 bcopy(s->bytes[0], &bytes[0], sizeof(u_int64_t));
320 bcopy(s->bytes[1], &bytes[1], sizeof(u_int64_t));
321 printf(", %llu:%llu pkts, %llu:%llu bytes",
322#ifdef __FreeBSD__
323 (unsigned long long)betoh64(packets[0]),
324 (unsigned long long)betoh64(packets[1]),
325 (unsigned long long)betoh64(bytes[0]),
326 (unsigned long long)betoh64(bytes[1]));
327#else
328 betoh64(packets[0]),
329 betoh64(packets[1]),
330 betoh64(bytes[0]),
331 betoh64(bytes[1]));
332#endif
333 if (ntohl(s->anchor) != -1)
334 printf(", anchor %u", ntohl(s->anchor));
335 if (ntohl(s->rule) != -1)
336 printf(", rule %u", ntohl(s->rule));
337 if (s->state_flags & PFSTATE_SLOPPY)
338 printf(", sloppy");
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