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 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 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 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 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 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 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