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