1 /* $OpenBSD: pfctl_parser.c,v 1.289 2012/07/10 09:39:26 henning Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Daniel Hartmeier 5 * 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. 14 * - Redistributions in binary form must reproduce the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer in the documentation and/or other materials provided 17 * with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 23 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 27 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 29 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 * 32 */ 33 34 #include <sys/types.h> 35 #include <sys/ioctl.h> 36 #include <sys/socket.h> 37 #include <sys/param.h> 38 #include <sys/proc.h> 39 #include <net/if.h> 40 #include <netinet/in.h> 41 #include <netinet/in_systm.h> 42 #include <netinet/ip.h> 43 #include <netinet/ip_icmp.h> 44 #include <netinet/icmp6.h> 45 #include <net/pfvar.h> 46 #include <arpa/inet.h> 47 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <string.h> 51 #include <ctype.h> 52 #include <netdb.h> 53 #include <stdarg.h> 54 #include <errno.h> 55 #include <err.h> 56 #include <ifaddrs.h> 57 #include <unistd.h> 58 59 #define SYSLOG_NAMES 60 #include <syslog.h> 61 62 #include "pfctl_parser.h" 63 #include "pfctl.h" 64 65 void print_op (u_int8_t, const char *, const char *); 66 void print_port (u_int8_t, u_int16_t, u_int16_t, const char *, int); 67 void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned); 68 void print_flags (u_int8_t); 69 void print_fromto(struct pf_rule_addr *, pf_osfp_t, 70 struct pf_rule_addr *, u_int8_t, u_int8_t, int); 71 int ifa_skip_if(const char *filter, struct node_host *p); 72 73 struct node_host *ifa_grouplookup(const char *, int); 74 struct node_host *host_if(const char *, int); 75 struct node_host *host_v4(const char *, int); 76 struct node_host *host_v6(const char *, int); 77 struct node_host *host_dns(const char *, int, int); 78 79 const char *tcpflags = "FSRPAUEW"; 80 81 static const struct icmptypeent icmp_type[] = { 82 { "echoreq", ICMP_ECHO }, 83 { "echorep", ICMP_ECHOREPLY }, 84 { "unreach", ICMP_UNREACH }, 85 { "squench", ICMP_SOURCEQUENCH }, 86 { "redir", ICMP_REDIRECT }, 87 { "althost", ICMP_ALTHOSTADDR }, 88 { "routeradv", ICMP_ROUTERADVERT }, 89 { "routersol", ICMP_ROUTERSOLICIT }, 90 { "timex", ICMP_TIMXCEED }, 91 { "paramprob", ICMP_PARAMPROB }, 92 { "timereq", ICMP_TSTAMP }, 93 { "timerep", ICMP_TSTAMPREPLY }, 94 { "inforeq", ICMP_IREQ }, 95 { "inforep", ICMP_IREQREPLY }, 96 { "maskreq", ICMP_MASKREQ }, 97 { "maskrep", ICMP_MASKREPLY }, 98 { "trace", ICMP_TRACEROUTE }, 99 { "dataconv", ICMP_DATACONVERR }, 100 { "mobredir", ICMP_MOBILE_REDIRECT }, 101 { "ipv6-where", ICMP_IPV6_WHEREAREYOU }, 102 { "ipv6-here", ICMP_IPV6_IAMHERE }, 103 { "mobregreq", ICMP_MOBILE_REGREQUEST }, 104 { "mobregrep", ICMP_MOBILE_REGREPLY }, 105 { "skip", ICMP_SKIP }, 106 { "photuris", ICMP_PHOTURIS } 107 }; 108 109 static const struct icmptypeent icmp6_type[] = { 110 { "unreach", ICMP6_DST_UNREACH }, 111 { "toobig", ICMP6_PACKET_TOO_BIG }, 112 { "timex", ICMP6_TIME_EXCEEDED }, 113 { "paramprob", ICMP6_PARAM_PROB }, 114 { "echoreq", ICMP6_ECHO_REQUEST }, 115 { "echorep", ICMP6_ECHO_REPLY }, 116 { "groupqry", ICMP6_MEMBERSHIP_QUERY }, 117 { "listqry", MLD_LISTENER_QUERY }, 118 { "grouprep", ICMP6_MEMBERSHIP_REPORT }, 119 { "listenrep", MLD_LISTENER_REPORT }, 120 { "groupterm", ICMP6_MEMBERSHIP_REDUCTION }, 121 { "listendone", MLD_LISTENER_DONE }, 122 { "routersol", ND_ROUTER_SOLICIT }, 123 { "routeradv", ND_ROUTER_ADVERT }, 124 { "neighbrsol", ND_NEIGHBOR_SOLICIT }, 125 { "neighbradv", ND_NEIGHBOR_ADVERT }, 126 { "redir", ND_REDIRECT }, 127 { "routrrenum", ICMP6_ROUTER_RENUMBERING }, 128 { "wrureq", ICMP6_WRUREQUEST }, 129 { "wrurep", ICMP6_WRUREPLY }, 130 { "fqdnreq", ICMP6_FQDN_QUERY }, 131 { "fqdnrep", ICMP6_FQDN_REPLY }, 132 { "niqry", ICMP6_NI_QUERY }, 133 { "nirep", ICMP6_NI_REPLY }, 134 { "mtraceresp", MLD_MTRACE_RESP }, 135 { "mtrace", MLD_MTRACE } 136 }; 137 138 static const struct icmpcodeent icmp_code[] = { 139 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET }, 140 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST }, 141 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL }, 142 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT }, 143 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG }, 144 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL }, 145 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN }, 146 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN }, 147 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED }, 148 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB }, 149 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB }, 150 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET }, 151 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST }, 152 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB }, 153 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE }, 154 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF }, 155 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET }, 156 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST }, 157 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET }, 158 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST }, 159 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL }, 160 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON }, 161 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS }, 162 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS }, 163 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR }, 164 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT }, 165 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH }, 166 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX }, 167 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED }, 168 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED } 169 }; 170 171 static const struct icmpcodeent icmp6_code[] = { 172 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN }, 173 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE }, 174 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR }, 175 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE }, 176 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR }, 177 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT }, 178 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT }, 179 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY }, 180 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER }, 181 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER }, 182 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK }, 183 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER } 184 }; 185 186 const struct pf_timeout pf_timeouts[] = { 187 { "tcp.first", PFTM_TCP_FIRST_PACKET }, 188 { "tcp.opening", PFTM_TCP_OPENING }, 189 { "tcp.established", PFTM_TCP_ESTABLISHED }, 190 { "tcp.closing", PFTM_TCP_CLOSING }, 191 { "tcp.finwait", PFTM_TCP_FIN_WAIT }, 192 { "tcp.closed", PFTM_TCP_CLOSED }, 193 { "tcp.tsdiff", PFTM_TS_DIFF }, 194 { "udp.first", PFTM_UDP_FIRST_PACKET }, 195 { "udp.single", PFTM_UDP_SINGLE }, 196 { "udp.multiple", PFTM_UDP_MULTIPLE }, 197 { "icmp.first", PFTM_ICMP_FIRST_PACKET }, 198 { "icmp.error", PFTM_ICMP_ERROR_REPLY }, 199 { "other.first", PFTM_OTHER_FIRST_PACKET }, 200 { "other.single", PFTM_OTHER_SINGLE }, 201 { "other.multiple", PFTM_OTHER_MULTIPLE }, 202 { "frag", PFTM_FRAG }, 203 { "interval", PFTM_INTERVAL }, 204 { "adaptive.start", PFTM_ADAPTIVE_START }, 205 { "adaptive.end", PFTM_ADAPTIVE_END }, 206 { "src.track", PFTM_SRC_NODE }, 207 { NULL, 0 } 208 }; 209 210 enum { PF_POOL_ROUTE, PF_POOL_NAT, PF_POOL_RDR }; 211 212 const struct icmptypeent * 213 geticmptypebynumber(u_int8_t type, sa_family_t af) 214 { 215 unsigned int i; 216 217 if (af != AF_INET6) { 218 for (i=0; i < (sizeof (icmp_type) / sizeof(icmp_type[0])); 219 i++) { 220 if (type == icmp_type[i].type) 221 return (&icmp_type[i]); 222 } 223 } else { 224 for (i=0; i < (sizeof (icmp6_type) / 225 sizeof(icmp6_type[0])); i++) { 226 if (type == icmp6_type[i].type) 227 return (&icmp6_type[i]); 228 } 229 } 230 return (NULL); 231 } 232 233 const struct icmptypeent * 234 geticmptypebyname(char *w, sa_family_t af) 235 { 236 unsigned int i; 237 238 if (af != AF_INET6) { 239 for (i=0; i < (sizeof (icmp_type) / sizeof(icmp_type[0])); 240 i++) { 241 if (!strcmp(w, icmp_type[i].name)) 242 return (&icmp_type[i]); 243 } 244 } else { 245 for (i=0; i < (sizeof (icmp6_type) / 246 sizeof(icmp6_type[0])); i++) { 247 if (!strcmp(w, icmp6_type[i].name)) 248 return (&icmp6_type[i]); 249 } 250 } 251 return (NULL); 252 } 253 254 const struct icmpcodeent * 255 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af) 256 { 257 unsigned int i; 258 259 if (af != AF_INET6) { 260 for (i=0; i < (sizeof (icmp_code) / sizeof(icmp_code[0])); 261 i++) { 262 if (type == icmp_code[i].type && 263 code == icmp_code[i].code) 264 return (&icmp_code[i]); 265 } 266 } else { 267 for (i=0; i < (sizeof (icmp6_code) / 268 sizeof(icmp6_code[0])); i++) { 269 if (type == icmp6_code[i].type && 270 code == icmp6_code[i].code) 271 return (&icmp6_code[i]); 272 } 273 } 274 return (NULL); 275 } 276 277 const struct icmpcodeent * 278 geticmpcodebyname(u_long type, char *w, sa_family_t af) 279 { 280 unsigned int i; 281 282 if (af != AF_INET6) { 283 for (i=0; i < (sizeof (icmp_code) / sizeof(icmp_code[0])); 284 i++) { 285 if (type == icmp_code[i].type && 286 !strcmp(w, icmp_code[i].name)) 287 return (&icmp_code[i]); 288 } 289 } else { 290 for (i=0; i < (sizeof (icmp6_code) / 291 sizeof(icmp6_code[0])); i++) { 292 if (type == icmp6_code[i].type && 293 !strcmp(w, icmp6_code[i].name)) 294 return (&icmp6_code[i]); 295 } 296 } 297 return (NULL); 298 } 299 300 /* 301 * Decode a symbolic name to a numeric value. 302 * From syslogd. 303 */ 304 int 305 string_to_loglevel(const char *name) 306 { 307 CODE *c; 308 char *p, buf[40]; 309 310 if (isdigit(*name)) 311 return (atoi(name)); 312 313 for (p = buf; *name && p < &buf[sizeof(buf) - 1]; p++, name++) { 314 if (isupper(*name)) 315 *p = tolower(*name); 316 else 317 *p = *name; 318 } 319 *p = '\0'; 320 for (c = prioritynames; c->c_name; c++) 321 if (!strcmp(buf, c->c_name) && c->c_val != INTERNAL_NOPRI) 322 return (c->c_val); 323 324 return (-1); 325 } 326 327 const char * 328 loglevel_to_string(int level) 329 { 330 CODE *c; 331 332 for (c = prioritynames; c->c_name; c++) 333 if (c->c_val == level) 334 return (c->c_name); 335 336 return ("unknown"); 337 } 338 339 void 340 print_op(u_int8_t op, const char *a1, const char *a2) 341 { 342 if (op == PF_OP_IRG) 343 printf(" %s >< %s", a1, a2); 344 else if (op == PF_OP_XRG) 345 printf(" %s <> %s", a1, a2); 346 else if (op == PF_OP_EQ) 347 printf(" = %s", a1); 348 else if (op == PF_OP_NE) 349 printf(" != %s", a1); 350 else if (op == PF_OP_LT) 351 printf(" < %s", a1); 352 else if (op == PF_OP_LE) 353 printf(" <= %s", a1); 354 else if (op == PF_OP_GT) 355 printf(" > %s", a1); 356 else if (op == PF_OP_GE) 357 printf(" >= %s", a1); 358 else if (op == PF_OP_RRG) 359 printf(" %s:%s", a1, a2); 360 } 361 362 void 363 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int opts) 364 { 365 char a1[6], a2[6]; 366 struct servent *s = NULL; 367 368 if (opts & PF_OPT_PORTNAMES) 369 s = getservbyport(p1, proto); 370 p1 = ntohs(p1); 371 p2 = ntohs(p2); 372 snprintf(a1, sizeof(a1), "%u", p1); 373 snprintf(a2, sizeof(a2), "%u", p2); 374 printf(" port"); 375 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE)) 376 print_op(op, s->s_name, a2); 377 else 378 print_op(op, a1, a2); 379 } 380 381 void 382 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax) 383 { 384 char a1[11], a2[11]; 385 386 snprintf(a1, sizeof(a1), "%u", u1); 387 snprintf(a2, sizeof(a2), "%u", u2); 388 printf(" %s", t); 389 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE)) 390 print_op(op, "unknown", a2); 391 else 392 print_op(op, a1, a2); 393 } 394 395 void 396 print_flags(u_int8_t f) 397 { 398 int i; 399 400 for (i = 0; tcpflags[i]; ++i) 401 if (f & (1 << i)) 402 printf("%c", tcpflags[i]); 403 } 404 405 void 406 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst, 407 sa_family_t af, u_int8_t proto, int opts) 408 { 409 char buf[PF_OSFP_LEN*3]; 410 int verbose = opts & (PF_OPT_VERBOSE2 | PF_OPT_DEBUG); 411 if (src->addr.type == PF_ADDR_ADDRMASK && 412 dst->addr.type == PF_ADDR_ADDRMASK && 413 PF_AZERO(&src->addr.v.a.addr, AF_INET6) && 414 PF_AZERO(&src->addr.v.a.mask, AF_INET6) && 415 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) && 416 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) && 417 !src->neg && !dst->neg && 418 !src->port_op && !dst->port_op && 419 osfp == PF_OSFP_ANY) 420 printf(" all"); 421 else { 422 printf(" from "); 423 if (src->neg) 424 printf("! "); 425 print_addr(&src->addr, af, verbose); 426 if (src->port_op) 427 print_port(src->port_op, src->port[0], 428 src->port[1], 429 proto == IPPROTO_TCP ? "tcp" : "udp", opts); 430 if (osfp != PF_OSFP_ANY) 431 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf, 432 sizeof(buf))); 433 434 printf(" to "); 435 if (dst->neg) 436 printf("! "); 437 print_addr(&dst->addr, af, verbose); 438 if (dst->port_op) 439 print_port(dst->port_op, dst->port[0], 440 dst->port[1], 441 proto == IPPROTO_TCP ? "tcp" : "udp", opts); 442 } 443 } 444 445 void 446 print_pool(struct pf_pool *pool, u_int16_t p1, u_int16_t p2, 447 sa_family_t af, int id, int verbose) 448 { 449 if (pool->ifname[0]) { 450 if (!PF_AZERO(&pool->addr.v.a.addr, af)) { 451 print_addr(&pool->addr, af, verbose); 452 printf("@"); 453 } 454 printf("%s", pool->ifname); 455 } else 456 print_addr(&pool->addr, af, verbose); 457 switch (id) { 458 case PF_POOL_NAT: 459 if ((p1 != PF_NAT_PROXY_PORT_LOW || 460 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) { 461 if (p1 == p2) 462 printf(" port %u", p1); 463 else 464 printf(" port %u:%u", p1, p2); 465 } 466 break; 467 case PF_POOL_RDR: 468 if (p1) { 469 printf(" port %u", p1); 470 if (p2 && (p2 != p1)) 471 printf(":%u", p2); 472 } 473 break; 474 default: 475 break; 476 } 477 switch (pool->opts & PF_POOL_TYPEMASK) { 478 case PF_POOL_NONE: 479 break; 480 case PF_POOL_BITMASK: 481 printf(" bitmask"); 482 break; 483 case PF_POOL_RANDOM: 484 printf(" random"); 485 break; 486 case PF_POOL_SRCHASH: 487 printf(" source-hash 0x%08x%08x%08x%08x", 488 pool->key.key32[0], pool->key.key32[1], 489 pool->key.key32[2], pool->key.key32[3]); 490 break; 491 case PF_POOL_ROUNDROBIN: 492 printf(" round-robin"); 493 break; 494 case PF_POOL_LEASTSTATES: 495 printf(" least-states"); 496 break; 497 } 498 if (pool->opts & PF_POOL_STICKYADDR) 499 printf(" sticky-address"); 500 if (id == PF_POOL_NAT && p1 == 0 && p2 == 0) 501 printf(" static-port"); 502 } 503 504 const char *pf_reasons[PFRES_MAX+1] = PFRES_NAMES; 505 const char *pf_lcounters[LCNT_MAX+1] = LCNT_NAMES; 506 const char *pf_fcounters[FCNT_MAX+1] = FCNT_NAMES; 507 const char *pf_scounters[FCNT_MAX+1] = FCNT_NAMES; 508 509 void 510 print_status(struct pf_status *s, int opts) 511 { 512 char statline[80], *running, *debug; 513 time_t runtime; 514 int i; 515 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 516 static const char hex[] = "0123456789abcdef"; 517 518 runtime = time(NULL) - s->since; 519 running = s->running ? "Enabled" : "Disabled"; 520 521 if (s->since) { 522 unsigned int sec, min, hrs, day = runtime; 523 524 sec = day % 60; 525 day /= 60; 526 min = day % 60; 527 day /= 60; 528 hrs = day % 24; 529 day /= 24; 530 snprintf(statline, sizeof(statline), 531 "Status: %s for %u days %.2u:%.2u:%.2u", 532 running, day, hrs, min, sec); 533 } else 534 snprintf(statline, sizeof(statline), "Status: %s", running); 535 printf("%-44s", statline); 536 asprintf(&debug, "Debug: %s", loglevel_to_string(s->debug)); 537 printf("%15s\n\n", debug); 538 free(debug); 539 540 if (opts & PF_OPT_VERBOSE) { 541 printf("Hostid: 0x%08x\n", ntohl(s->hostid)); 542 543 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 544 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 545 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 546 } 547 buf[i + i] = '\0'; 548 printf("Checksum: 0x%s\n\n", buf); 549 } 550 551 if (s->ifname[0] != 0) { 552 printf("Interface Stats for %-16s %5s %16s\n", 553 s->ifname, "IPv4", "IPv6"); 554 printf(" %-25s %14llu %16llu\n", "Bytes In", 555 (unsigned long long)s->bcounters[0][0], 556 (unsigned long long)s->bcounters[1][0]); 557 printf(" %-25s %14llu %16llu\n", "Bytes Out", 558 (unsigned long long)s->bcounters[0][1], 559 (unsigned long long)s->bcounters[1][1]); 560 printf(" Packets In\n"); 561 printf(" %-23s %14llu %16llu\n", "Passed", 562 (unsigned long long)s->pcounters[0][0][PF_PASS], 563 (unsigned long long)s->pcounters[1][0][PF_PASS]); 564 printf(" %-23s %14llu %16llu\n", "Blocked", 565 (unsigned long long)s->pcounters[0][0][PF_DROP], 566 (unsigned long long)s->pcounters[1][0][PF_DROP]); 567 printf(" Packets Out\n"); 568 printf(" %-23s %14llu %16llu\n", "Passed", 569 (unsigned long long)s->pcounters[0][1][PF_PASS], 570 (unsigned long long)s->pcounters[1][1][PF_PASS]); 571 printf(" %-23s %14llu %16llu\n\n", "Blocked", 572 (unsigned long long)s->pcounters[0][1][PF_DROP], 573 (unsigned long long)s->pcounters[1][1][PF_DROP]); 574 } 575 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 576 printf(" %-25s %14u %14s\n", "current entries", s->states, ""); 577 for (i = 0; i < FCNT_MAX; i++) { 578 printf(" %-25s %14llu ", pf_fcounters[i], 579 (unsigned long long)s->fcounters[i]); 580 if (runtime > 0) 581 printf("%14.1f/s\n", 582 (double)s->fcounters[i] / (double)runtime); 583 else 584 printf("%14s\n", ""); 585 } 586 if (opts & PF_OPT_VERBOSE) { 587 printf("Source Tracking Table\n"); 588 printf(" %-25s %14u %14s\n", "current entries", 589 s->src_nodes, ""); 590 for (i = 0; i < SCNT_MAX; i++) { 591 printf(" %-25s %14lld ", pf_scounters[i], 592 s->scounters[i]); 593 if (runtime > 0) 594 printf("%14.1f/s\n", 595 (double)s->scounters[i] / (double)runtime); 596 else 597 printf("%14s\n", ""); 598 } 599 } 600 printf("Counters\n"); 601 for (i = 0; i < PFRES_MAX; i++) { 602 printf(" %-25s %14llu ", pf_reasons[i], 603 (unsigned long long)s->counters[i]); 604 if (runtime > 0) 605 printf("%14.1f/s\n", 606 (double)s->counters[i] / (double)runtime); 607 else 608 printf("%14s\n", ""); 609 } 610 if (opts & PF_OPT_VERBOSE) { 611 printf("Limit Counters\n"); 612 for (i = 0; i < LCNT_MAX; i++) { 613 printf(" %-25s %14lld ", pf_lcounters[i], 614 s->lcounters[i]); 615 if (runtime > 0) 616 printf("%14.1f/s\n", 617 (double)s->lcounters[i] / (double)runtime); 618 else 619 printf("%14s\n", ""); 620 } 621 } 622 } 623 624 void 625 print_src_node(struct pf_src_node *sn, int opts) 626 { 627 struct pf_addr_wrap aw; 628 int min, sec; 629 630 memset(&aw, 0, sizeof(aw)); 631 if (sn->af == AF_INET) 632 aw.v.a.mask.addr32[0] = 0xffffffff; 633 else 634 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 635 636 aw.v.a.addr = sn->addr; 637 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 638 639 if (!PF_AZERO(&sn->raddr, sn->af)) { 640 if (sn->type == PF_SN_NAT) 641 printf(" nat-to "); 642 else if (sn->type == PF_SN_RDR) 643 printf(" rdr-to "); 644 else if (sn->type == PF_SN_ROUTE) 645 printf(" route-to "); 646 else 647 printf(" ??? (%u) ", sn->type); 648 aw.v.a.addr = sn->raddr; 649 print_addr(&aw, sn->naf ? sn->naf : sn->af, 650 opts & PF_OPT_VERBOSE2); 651 } 652 653 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 654 sn->conn, sn->conn_rate.count / 1000, 655 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 656 if (opts & PF_OPT_VERBOSE) { 657 sec = sn->creation % 60; 658 sn->creation /= 60; 659 min = sn->creation % 60; 660 sn->creation /= 60; 661 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec); 662 if (sn->states == 0) { 663 sec = sn->expire % 60; 664 sn->expire /= 60; 665 min = sn->expire % 60; 666 sn->expire /= 60; 667 printf(", expires in %.2u:%.2u:%.2u", 668 sn->expire, min, sec); 669 } 670 printf(", %llu pkts, %llu bytes", 671 sn->packets[0] + sn->packets[1], 672 sn->bytes[0] + sn->bytes[1]); 673 if (sn->rule.nr != -1) 674 printf(", rule %u", sn->rule.nr); 675 printf("\n"); 676 } 677 } 678 679 void 680 print_rule(struct pf_rule *r, const char *anchor_call, int opts) 681 { 682 static const char *actiontypes[] = { "pass", "block", "scrub", 683 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr", 684 "", "", "match"}; 685 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 686 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 687 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 688 int i, ropts; 689 int verbose = opts & (PF_OPT_VERBOSE2 | PF_OPT_DEBUG); 690 char *p; 691 692 if (verbose) 693 printf("@%d ", r->nr); 694 if (r->action > PF_MATCH) 695 printf("action(%d)", r->action); 696 else if (anchor_call[0]) { 697 p = strrchr(anchor_call, '/'); 698 if (p ? p[1] == '_' : anchor_call[0] == '_') 699 printf("%s", anchortypes[r->action]); 700 else 701 printf("%s \"%s\"", anchortypes[r->action], 702 anchor_call); 703 } else 704 printf("%s", actiontypes[r->action]); 705 if (r->action == PF_DROP) { 706 if (r->rule_flag & PFRULE_RETURN) 707 printf(" return"); 708 else if (r->rule_flag & PFRULE_RETURNRST) { 709 if (!r->return_ttl) 710 printf(" return-rst"); 711 else 712 printf(" return-rst(ttl %d)", r->return_ttl); 713 } else if (r->rule_flag & PFRULE_RETURNICMP) { 714 const struct icmpcodeent *ic, *ic6; 715 716 ic = geticmpcodebynumber(r->return_icmp >> 8, 717 r->return_icmp & 255, AF_INET); 718 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 719 r->return_icmp6 & 255, AF_INET6); 720 721 switch (r->af) { 722 case AF_INET: 723 printf(" return-icmp"); 724 if (ic == NULL) 725 printf("(%u)", r->return_icmp & 255); 726 else 727 printf("(%s)", ic->name); 728 break; 729 case AF_INET6: 730 printf(" return-icmp6"); 731 if (ic6 == NULL) 732 printf("(%u)", r->return_icmp6 & 255); 733 else 734 printf("(%s)", ic6->name); 735 break; 736 default: 737 printf(" return-icmp"); 738 if (ic == NULL) 739 printf("(%u, ", r->return_icmp & 255); 740 else 741 printf("(%s, ", ic->name); 742 if (ic6 == NULL) 743 printf("%u)", r->return_icmp6 & 255); 744 else 745 printf("%s)", ic6->name); 746 break; 747 } 748 } else 749 printf(" drop"); 750 } 751 if (r->direction == PF_IN) 752 printf(" in"); 753 else if (r->direction == PF_OUT) 754 printf(" out"); 755 if (r->log) { 756 printf(" log"); 757 if (r->log & ~PF_LOG || r->logif) { 758 int count = 0; 759 760 printf(" ("); 761 if (r->log & PF_LOG_ALL) 762 printf("%sall", count++ ? ", " : ""); 763 if (r->log & PF_LOG_MATCHES) 764 printf("%smatches", count++ ? ", " : ""); 765 if (r->log & PF_LOG_SOCKET_LOOKUP) 766 printf("%suser", count++ ? ", " : ""); 767 if (r->logif) 768 printf("%sto pflog%u", count++ ? ", " : "", 769 r->logif); 770 printf(")"); 771 } 772 } 773 if (r->quick) 774 printf(" quick"); 775 if (r->ifname[0]) { 776 if (r->ifnot) 777 printf(" on ! %s", r->ifname); 778 else 779 printf(" on %s", r->ifname); 780 } 781 if (r->onrdomain >= 0) { 782 if (r->ifnot) 783 printf(" on ! rdomain %i", r->onrdomain); 784 else 785 printf(" on rdomain %i", r->onrdomain); 786 } 787 if (r->af) { 788 if (r->af == AF_INET) 789 printf(" inet"); 790 else 791 printf(" inet6"); 792 } 793 if (r->proto) { 794 struct protoent *p; 795 796 if ((p = getprotobynumber(r->proto)) != NULL) 797 printf(" proto %s", p->p_name); 798 else 799 printf(" proto %u", r->proto); 800 } 801 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 802 opts); 803 if (r->rcv_ifname[0]) 804 printf(" received-on %s", r->rcv_ifname); 805 if (r->uid.op) 806 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 807 UID_MAX); 808 if (r->gid.op) 809 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 810 GID_MAX); 811 if (r->flags || r->flagset) { 812 printf(" flags "); 813 print_flags(r->flags); 814 printf("/"); 815 print_flags(r->flagset); 816 } else if ((r->action == PF_PASS || r->action == PF_MATCH) && 817 (!r->proto || r->proto == IPPROTO_TCP) && 818 !(r->rule_flag & PFRULE_FRAGMENT) && 819 !anchor_call[0] && r->keep_state) 820 printf(" flags any"); 821 if (r->type) { 822 const struct icmptypeent *it; 823 824 it = geticmptypebynumber(r->type-1, r->af); 825 if (r->af != AF_INET6) 826 printf(" icmp-type"); 827 else 828 printf(" icmp6-type"); 829 if (it != NULL) 830 printf(" %s", it->name); 831 else 832 printf(" %u", r->type-1); 833 if (r->code) { 834 const struct icmpcodeent *ic; 835 836 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 837 if (ic != NULL) 838 printf(" code %s", ic->name); 839 else 840 printf(" code %u", r->code-1); 841 } 842 } 843 if (r->tos) 844 printf(" tos 0x%2.2x", r->tos); 845 846 if (r->set_prio[0] != PF_PRIO_NOTSET || 847 r->scrub_flags & PFSTATE_SETTOS) { 848 char *comma = ""; 849 printf(" set ("); 850 if (r->set_prio[0] != PF_PRIO_NOTSET) { 851 if (r->set_prio[0] == r->set_prio[1]) 852 printf("%s prio %u", comma, r->set_prio[0]); 853 else 854 printf("%s prio(%u, %u)", comma, r->set_prio[0], 855 r->set_prio[1]); 856 comma = ","; 857 } 858 if (r->scrub_flags & PFSTATE_SETTOS) { 859 printf("%s tos 0x%2.2x", comma, r->set_tos); 860 comma = ","; 861 } 862 printf(" )"); 863 } 864 865 ropts = 0; 866 if (r->max_states || r->max_src_nodes || r->max_src_states) 867 ropts = 1; 868 if (r->rule_flag & PFRULE_NOSYNC) 869 ropts = 1; 870 if (r->rule_flag & PFRULE_SRCTRACK) 871 ropts = 1; 872 if (r->rule_flag & PFRULE_IFBOUND) 873 ropts = 1; 874 if (r->rule_flag & PFRULE_STATESLOPPY) 875 ropts = 1; 876 if (r->rule_flag & PFRULE_PFLOW) 877 ropts = 1; 878 for (i = 0; !ropts && i < PFTM_MAX; ++i) 879 if (r->timeout[i]) 880 ropts = 1; 881 882 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 883 printf(" no state"); 884 else if (r->keep_state == PF_STATE_NORMAL && ropts) 885 printf(" keep state"); 886 else if (r->keep_state == PF_STATE_MODULATE) 887 printf(" modulate state"); 888 else if (r->keep_state == PF_STATE_SYNPROXY) 889 printf(" synproxy state"); 890 if (r->prob) { 891 char buf[20]; 892 893 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 894 for (i = strlen(buf)-1; i > 0; i--) { 895 if (buf[i] == '0') 896 buf[i] = '\0'; 897 else { 898 if (buf[i] == '.') 899 buf[i] = '\0'; 900 break; 901 } 902 } 903 printf(" probability %s%%", buf); 904 } 905 if (ropts) { 906 printf(" ("); 907 if (r->max_states) { 908 printf("max %u", r->max_states); 909 ropts = 0; 910 } 911 if (r->rule_flag & PFRULE_NOSYNC) { 912 if (!ropts) 913 printf(", "); 914 printf("no-sync"); 915 ropts = 0; 916 } 917 if (r->rule_flag & PFRULE_SRCTRACK) { 918 if (!ropts) 919 printf(", "); 920 printf("source-track"); 921 if (r->rule_flag & PFRULE_RULESRCTRACK) 922 printf(" rule"); 923 else 924 printf(" global"); 925 ropts = 0; 926 } 927 if (r->max_src_states) { 928 if (!ropts) 929 printf(", "); 930 printf("max-src-states %u", r->max_src_states); 931 ropts = 0; 932 } 933 if (r->max_src_conn) { 934 if (!ropts) 935 printf(", "); 936 printf("max-src-conn %u", r->max_src_conn); 937 ropts = 0; 938 } 939 if (r->max_src_conn_rate.limit) { 940 if (!ropts) 941 printf(", "); 942 printf("max-src-conn-rate %u/%u", 943 r->max_src_conn_rate.limit, 944 r->max_src_conn_rate.seconds); 945 ropts = 0; 946 } 947 if (r->max_src_nodes) { 948 if (!ropts) 949 printf(", "); 950 printf("max-src-nodes %u", r->max_src_nodes); 951 ropts = 0; 952 } 953 if (r->overload_tblname[0]) { 954 if (!ropts) 955 printf(", "); 956 printf("overload <%s>", r->overload_tblname); 957 if (r->flush) 958 printf(" flush"); 959 if (r->flush & PF_FLUSH_GLOBAL) 960 printf(" global"); 961 } 962 if (r->rule_flag & PFRULE_IFBOUND) { 963 if (!ropts) 964 printf(", "); 965 printf("if-bound"); 966 ropts = 0; 967 } 968 if (r->rule_flag & PFRULE_STATESLOPPY) { 969 if (!ropts) 970 printf(", "); 971 printf("sloppy"); 972 ropts = 0; 973 } 974 if (r->rule_flag & PFRULE_PFLOW) { 975 if (!ropts) 976 printf(", "); 977 printf("pflow"); 978 ropts = 0; 979 } 980 for (i = 0; i < PFTM_MAX; ++i) 981 if (r->timeout[i]) { 982 int j; 983 984 if (!ropts) 985 printf(", "); 986 ropts = 0; 987 for (j = 0; pf_timeouts[j].name != NULL; 988 ++j) 989 if (pf_timeouts[j].timeout == i) 990 break; 991 printf("%s %u", pf_timeouts[j].name == NULL ? 992 "inv.timeout" : pf_timeouts[j].name, 993 r->timeout[i]); 994 } 995 printf(")"); 996 } 997 998 if (r->rule_flag & PFRULE_FRAGMENT) 999 printf(" fragment"); 1000 1001 if (r->scrub_flags & PFSTATE_SCRUBMASK || r->min_ttl || r->max_mss) { 1002 printf(" scrub ("); 1003 ropts = 1; 1004 if (r->scrub_flags & PFSTATE_NODF) { 1005 printf("no-df"); 1006 ropts = 0; 1007 } 1008 if (r->scrub_flags & PFSTATE_RANDOMID) { 1009 if (!ropts) 1010 printf(" "); 1011 printf("random-id"); 1012 ropts = 0; 1013 } 1014 if (r->min_ttl) { 1015 if (!ropts) 1016 printf(" "); 1017 printf("min-ttl %d", r->min_ttl); 1018 ropts = 0; 1019 } 1020 if (r->scrub_flags & PFSTATE_SCRUB_TCP) { 1021 if (!ropts) 1022 printf(" "); 1023 printf("reassemble tcp"); 1024 ropts = 0; 1025 } 1026 if (r->max_mss) { 1027 if (!ropts) 1028 printf(" "); 1029 printf("max-mss %d", r->max_mss); 1030 ropts = 0; 1031 } 1032 printf(")"); 1033 } 1034 1035 if (r->allow_opts) 1036 printf(" allow-opts"); 1037 if (r->label[0]) 1038 printf(" label \"%s\"", r->label); 1039 if (r->rule_flag & PFRULE_ONCE) 1040 printf(" once"); 1041 if (r->qname[0] && r->pqname[0]) 1042 printf(" queue(%s, %s)", r->qname, r->pqname); 1043 else if (r->qname[0]) 1044 printf(" queue %s", r->qname); 1045 if (r->tagname[0]) 1046 printf(" tag %s", r->tagname); 1047 if (r->match_tagname[0]) { 1048 if (r->match_tag_not) 1049 printf(" !"); 1050 printf(" tagged %s", r->match_tagname); 1051 } 1052 if (r->rtableid != -1) 1053 printf(" rtable %u", r->rtableid); 1054 if (r->divert.port) { 1055 if (PF_AZERO(&r->divert.addr, AF_INET6)) { 1056 printf(" divert-reply"); 1057 } else { 1058 /* XXX cut&paste from print_addr */ 1059 char buf[48]; 1060 1061 printf(" divert-to "); 1062 if (inet_ntop(r->af, &r->divert.addr, buf, 1063 sizeof(buf)) == NULL) 1064 printf("?"); 1065 else 1066 printf("%s", buf); 1067 printf(" port %u", ntohs(r->divert.port)); 1068 } 1069 } 1070 if (r->divert_packet.port) 1071 printf(" divert-packet port %u", ntohs(r->divert_packet.port)); 1072 1073 if (!anchor_call[0] && r->nat.addr.type != PF_ADDR_NONE && 1074 r->rule_flag & PFRULE_AFTO) { 1075 printf(" af-to %s from ", r->naf == AF_INET ? "inet" : "inet6"); 1076 print_pool(&r->nat, r->nat.proxy_port[0], 1077 r->nat.proxy_port[1], r->naf ? r->naf : r->af, 1078 PF_POOL_NAT, verbose); 1079 if (r->rdr.addr.type != PF_ADDR_NONE) { 1080 printf(" to "); 1081 print_pool(&r->rdr, r->rdr.proxy_port[0], 1082 r->rdr.proxy_port[1], r->naf ? r->naf : r->af, 1083 PF_POOL_RDR, verbose); 1084 } 1085 } else if (!anchor_call[0] && r->nat.addr.type != PF_ADDR_NONE) { 1086 printf (" nat-to "); 1087 print_pool(&r->nat, r->nat.proxy_port[0], 1088 r->nat.proxy_port[1], r->naf ? r->naf : r->af, 1089 PF_POOL_NAT, verbose); 1090 } else if (!anchor_call[0] && r->rdr.addr.type != PF_ADDR_NONE) { 1091 printf (" rdr-to "); 1092 print_pool(&r->rdr, r->rdr.proxy_port[0], 1093 r->rdr.proxy_port[1], r->af, PF_POOL_RDR, verbose); 1094 } 1095 if (r->rt) { 1096 if (r->rt == PF_ROUTETO) 1097 printf(" route-to"); 1098 else if (r->rt == PF_REPLYTO) 1099 printf(" reply-to"); 1100 else if (r->rt == PF_DUPTO) 1101 printf(" dup-to"); 1102 printf(" "); 1103 print_pool(&r->route, 0, 0, r->af, PF_POOL_ROUTE, verbose); 1104 } 1105 } 1106 1107 void 1108 print_tabledef(const char *name, int flags, int addrs, 1109 struct node_tinithead *nodes) 1110 { 1111 struct node_tinit *ti, *nti; 1112 struct node_host *h; 1113 1114 printf("table <%s>", name); 1115 if (flags & PFR_TFLAG_CONST) 1116 printf(" const"); 1117 if (flags & PFR_TFLAG_PERSIST) 1118 printf(" persist"); 1119 if (flags & PFR_TFLAG_COUNTERS) 1120 printf(" counters"); 1121 SIMPLEQ_FOREACH(ti, nodes, entries) { 1122 if (ti->file) { 1123 printf(" file \"%s\"", ti->file); 1124 continue; 1125 } 1126 printf(" {"); 1127 for (;;) { 1128 for (h = ti->host; h != NULL; h = h->next) { 1129 printf(h->not ? " !" : " "); 1130 print_addr(&h->addr, h->af, 0); 1131 if (h->ifname) 1132 printf("@%s", h->ifname); 1133 } 1134 nti = SIMPLEQ_NEXT(ti, entries); 1135 if (nti != NULL && nti->file == NULL) 1136 ti = nti; /* merge lists */ 1137 else 1138 break; 1139 } 1140 printf(" }"); 1141 } 1142 if (addrs && SIMPLEQ_EMPTY(nodes)) 1143 printf(" { }"); 1144 printf("\n"); 1145 } 1146 1147 int 1148 parse_flags(char *s) 1149 { 1150 char *p, *q; 1151 u_int8_t f = 0; 1152 1153 for (p = s; *p; p++) { 1154 if ((q = strchr(tcpflags, *p)) == NULL) 1155 return -1; 1156 else 1157 f |= 1 << (q - tcpflags); 1158 } 1159 return (f ? f : PF_TH_ALL); 1160 } 1161 1162 void 1163 set_ipmask(struct node_host *h, u_int8_t b) 1164 { 1165 struct pf_addr *m, *n; 1166 int i, j = 0; 1167 1168 m = &h->addr.v.a.mask; 1169 memset(m, 0, sizeof(*m)); 1170 1171 while (b >= 32) { 1172 m->addr32[j++] = 0xffffffff; 1173 b -= 32; 1174 } 1175 for (i = 31; i > 31-b; --i) 1176 m->addr32[j] |= (1 << i); 1177 if (b) 1178 m->addr32[j] = htonl(m->addr32[j]); 1179 1180 /* Mask off bits of the address that will never be used. */ 1181 n = &h->addr.v.a.addr; 1182 if (h->addr.type == PF_ADDR_ADDRMASK) 1183 for (i = 0; i < 4; i++) 1184 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1185 } 1186 1187 int 1188 check_netmask(struct node_host *h, sa_family_t af) 1189 { 1190 struct node_host *n = NULL; 1191 struct pf_addr *m; 1192 1193 for (n = h; n != NULL; n = n->next) { 1194 if (h->addr.type == PF_ADDR_TABLE) 1195 continue; 1196 m = &h->addr.v.a.mask; 1197 /* fix up netmask for dynaddr */ 1198 if (af == AF_INET && h->addr.type == PF_ADDR_DYNIFTL && 1199 unmask(m, AF_INET6) > 32) 1200 set_ipmask(n, 32); 1201 /* netmasks > 32 bit are invalid on v4 */ 1202 if (af == AF_INET && 1203 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1204 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1205 unmask(m, AF_INET6)); 1206 return (1); 1207 } 1208 } 1209 return (0); 1210 } 1211 1212 /* interface lookup routines */ 1213 1214 struct node_host *iftab; 1215 1216 void 1217 ifa_load(void) 1218 { 1219 struct ifaddrs *ifap, *ifa; 1220 struct node_host *n = NULL, *h = NULL; 1221 1222 if (getifaddrs(&ifap) < 0) 1223 err(1, "getifaddrs"); 1224 1225 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1226 if (!(ifa->ifa_addr->sa_family == AF_INET || 1227 ifa->ifa_addr->sa_family == AF_INET6 || 1228 ifa->ifa_addr->sa_family == AF_LINK)) 1229 continue; 1230 n = calloc(1, sizeof(struct node_host)); 1231 if (n == NULL) 1232 err(1, "address: calloc"); 1233 n->af = ifa->ifa_addr->sa_family; 1234 n->ifa_flags = ifa->ifa_flags; 1235 #ifdef __KAME__ 1236 if (n->af == AF_INET6 && 1237 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1238 ifa->ifa_addr)->sin6_addr) && 1239 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1240 0) { 1241 struct sockaddr_in6 *sin6; 1242 1243 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1244 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1245 sin6->sin6_addr.s6_addr[3]; 1246 sin6->sin6_addr.s6_addr[2] = 0; 1247 sin6->sin6_addr.s6_addr[3] = 0; 1248 } 1249 #endif 1250 n->ifindex = 0; 1251 if (n->af == AF_INET) { 1252 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1253 ifa->ifa_addr)->sin_addr.s_addr, 1254 sizeof(struct in_addr)); 1255 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1256 ifa->ifa_netmask)->sin_addr.s_addr, 1257 sizeof(struct in_addr)); 1258 if (ifa->ifa_broadaddr != NULL) 1259 memcpy(&n->bcast, &((struct sockaddr_in *) 1260 ifa->ifa_broadaddr)->sin_addr.s_addr, 1261 sizeof(struct in_addr)); 1262 if (ifa->ifa_dstaddr != NULL) 1263 memcpy(&n->peer, &((struct sockaddr_in *) 1264 ifa->ifa_dstaddr)->sin_addr.s_addr, 1265 sizeof(struct in_addr)); 1266 } else if (n->af == AF_INET6) { 1267 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1268 ifa->ifa_addr)->sin6_addr.s6_addr, 1269 sizeof(struct in6_addr)); 1270 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1271 ifa->ifa_netmask)->sin6_addr.s6_addr, 1272 sizeof(struct in6_addr)); 1273 if (ifa->ifa_broadaddr != NULL) 1274 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1275 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1276 sizeof(struct in6_addr)); 1277 if (ifa->ifa_dstaddr != NULL) 1278 memcpy(&n->peer, &((struct sockaddr_in6 *) 1279 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1280 sizeof(struct in6_addr)); 1281 n->ifindex = ((struct sockaddr_in6 *) 1282 ifa->ifa_addr)->sin6_scope_id; 1283 } 1284 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1285 err(1, "ifa_load: strdup"); 1286 n->next = NULL; 1287 n->tail = n; 1288 if (h == NULL) 1289 h = n; 1290 else { 1291 h->tail->next = n; 1292 h->tail = n; 1293 } 1294 } 1295 1296 iftab = h; 1297 freeifaddrs(ifap); 1298 } 1299 1300 struct node_host * 1301 ifa_exists(const char *ifa_name) 1302 { 1303 struct node_host *n; 1304 struct ifgroupreq ifgr; 1305 int s; 1306 1307 if (iftab == NULL) 1308 ifa_load(); 1309 1310 /* check whether this is a group */ 1311 if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1) 1312 err(1, "socket"); 1313 bzero(&ifgr, sizeof(ifgr)); 1314 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1315 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == 0) { 1316 /* fake a node_host */ 1317 if ((n = calloc(1, sizeof(*n))) == NULL) 1318 err(1, "calloc"); 1319 if ((n->ifname = strdup(ifa_name)) == NULL) 1320 err(1, "strdup"); 1321 close(s); 1322 return (n); 1323 } 1324 close(s); 1325 1326 for (n = iftab; n; n = n->next) { 1327 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1328 return (n); 1329 } 1330 1331 return (NULL); 1332 } 1333 1334 struct node_host * 1335 ifa_grouplookup(const char *ifa_name, int flags) 1336 { 1337 struct ifg_req *ifg; 1338 struct ifgroupreq ifgr; 1339 int s, len; 1340 struct node_host *n, *h = NULL; 1341 1342 if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1) 1343 err(1, "socket"); 1344 bzero(&ifgr, sizeof(ifgr)); 1345 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1346 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) { 1347 close(s); 1348 return (NULL); 1349 } 1350 1351 len = ifgr.ifgr_len; 1352 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1353 err(1, "calloc"); 1354 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1355 err(1, "SIOCGIFGMEMB"); 1356 1357 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1358 ifg++) { 1359 len -= sizeof(struct ifg_req); 1360 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1361 continue; 1362 if (h == NULL) 1363 h = n; 1364 else { 1365 h->tail->next = n; 1366 h->tail = n->tail; 1367 } 1368 } 1369 free(ifgr.ifgr_groups); 1370 close(s); 1371 1372 return (h); 1373 } 1374 1375 struct node_host * 1376 ifa_lookup(const char *ifa_name, int flags) 1377 { 1378 struct node_host *p = NULL, *h = NULL, *n = NULL; 1379 int got4 = 0, got6 = 0; 1380 const char *last_if = NULL; 1381 1382 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1383 return (h); 1384 1385 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1386 ifa_name = NULL; 1387 1388 if (iftab == NULL) 1389 ifa_load(); 1390 1391 for (p = iftab; p; p = p->next) { 1392 if (ifa_skip_if(ifa_name, p)) 1393 continue; 1394 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1395 continue; 1396 if ((flags & PFI_AFLAG_BROADCAST) && 1397 !(p->ifa_flags & IFF_BROADCAST)) 1398 continue; 1399 if ((flags & PFI_AFLAG_PEER) && 1400 !(p->ifa_flags & IFF_POINTOPOINT)) 1401 continue; 1402 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1403 continue; 1404 if (last_if == NULL || strcmp(last_if, p->ifname)) 1405 got4 = got6 = 0; 1406 last_if = p->ifname; 1407 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1408 continue; 1409 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1410 continue; 1411 if (p->af == AF_INET) 1412 got4 = 1; 1413 else 1414 got6 = 1; 1415 n = calloc(1, sizeof(struct node_host)); 1416 if (n == NULL) 1417 err(1, "address: calloc"); 1418 n->af = p->af; 1419 if (flags & PFI_AFLAG_BROADCAST) 1420 memcpy(&n->addr.v.a.addr, &p->bcast, 1421 sizeof(struct pf_addr)); 1422 else if (flags & PFI_AFLAG_PEER) 1423 memcpy(&n->addr.v.a.addr, &p->peer, 1424 sizeof(struct pf_addr)); 1425 else 1426 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1427 sizeof(struct pf_addr)); 1428 if (flags & PFI_AFLAG_NETWORK) 1429 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1430 else { 1431 if (n->af == AF_INET) { 1432 if (p->ifa_flags & IFF_LOOPBACK && 1433 p->ifa_flags & IFF_LINK1) 1434 memcpy(&n->addr.v.a.mask, 1435 &p->addr.v.a.mask, 1436 sizeof(struct pf_addr)); 1437 else 1438 set_ipmask(n, 32); 1439 } else 1440 set_ipmask(n, 128); 1441 } 1442 n->ifindex = p->ifindex; 1443 1444 n->next = NULL; 1445 n->tail = n; 1446 if (h == NULL) 1447 h = n; 1448 else { 1449 h->tail->next = n; 1450 h->tail = n; 1451 } 1452 } 1453 return (h); 1454 } 1455 1456 int 1457 ifa_skip_if(const char *filter, struct node_host *p) 1458 { 1459 int n; 1460 1461 if (p->af != AF_INET && p->af != AF_INET6) 1462 return (1); 1463 if (filter == NULL || !*filter) 1464 return (0); 1465 if (!strcmp(p->ifname, filter)) 1466 return (0); /* exact match */ 1467 n = strlen(filter); 1468 if (n < 1 || n >= IFNAMSIZ) 1469 return (1); /* sanity check */ 1470 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1471 return (1); /* only do exact match in that case */ 1472 if (strncmp(p->ifname, filter, n)) 1473 return (1); /* prefix doesn't match */ 1474 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1475 } 1476 1477 struct node_host * 1478 host(const char *s) 1479 { 1480 struct node_host *h = NULL, *n; 1481 int mask = -1, v4mask = 32, v6mask = 128, cont = 1; 1482 char *p, *q, *r, *ps, *if_name; 1483 1484 if ((ps = strdup(s)) == NULL) 1485 err(1, "host: strdup"); 1486 1487 if ((if_name = strrchr(ps, '@')) != NULL) { 1488 if_name[0] = '\0'; 1489 if_name++; 1490 } 1491 1492 if ((p = strrchr(ps, '/')) != NULL) { 1493 if ((r = strdup(ps)) == NULL) 1494 err(1, "host: strdup"); 1495 mask = strtol(p+1, &q, 0); 1496 if (!q || *q || mask > 128 || q == (p+1)) { 1497 fprintf(stderr, "invalid netmask '%s'\n", p); 1498 free(r); 1499 free(ps); 1500 return (NULL); 1501 } 1502 p[0] = '\0'; 1503 v4mask = v6mask = mask; 1504 } else 1505 r = ps; 1506 1507 /* interface with this name exists? */ 1508 if (cont && (h = host_if(ps, mask)) != NULL) 1509 cont = 0; 1510 1511 /* IPv4 address? */ 1512 if (cont && (h = host_v4(r, mask)) != NULL) 1513 cont = 0; 1514 if (r != ps) 1515 free(r); 1516 1517 /* IPv6 address? */ 1518 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1519 cont = 0; 1520 1521 /* dns lookup */ 1522 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1523 cont = 0; 1524 1525 if (if_name && if_name[0]) 1526 for (n = h; n != NULL; n = n->next) 1527 if ((n->ifname = strdup(if_name)) == NULL) 1528 err(1, "host: strdup"); 1529 1530 free(ps); /* after we copy the name out */ 1531 if (h == NULL || cont == 1) { 1532 fprintf(stderr, "no IP address found for %s\n", s); 1533 return (NULL); 1534 } 1535 for (n = h; n != NULL; n = n->next) { 1536 n->addr.type = PF_ADDR_ADDRMASK; 1537 n->weight = 0; 1538 } 1539 return (h); 1540 } 1541 1542 struct node_host * 1543 host_if(const char *s, int mask) 1544 { 1545 struct node_host *n, *h = NULL; 1546 char *p, *ps; 1547 int flags = 0; 1548 1549 if ((ps = strdup(s)) == NULL) 1550 err(1, "host_if: strdup"); 1551 while ((p = strrchr(ps, ':')) != NULL) { 1552 if (!strcmp(p+1, "network")) 1553 flags |= PFI_AFLAG_NETWORK; 1554 else if (!strcmp(p+1, "broadcast")) 1555 flags |= PFI_AFLAG_BROADCAST; 1556 else if (!strcmp(p+1, "peer")) 1557 flags |= PFI_AFLAG_PEER; 1558 else if (!strcmp(p+1, "0")) 1559 flags |= PFI_AFLAG_NOALIAS; 1560 else { 1561 free(ps); 1562 return (NULL); 1563 } 1564 *p = '\0'; 1565 } 1566 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1567 fprintf(stderr, "illegal combination of interface modifiers\n"); 1568 free(ps); 1569 return (NULL); 1570 } 1571 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1572 fprintf(stderr, "network or broadcast lookup, but " 1573 "extra netmask given\n"); 1574 free(ps); 1575 return (NULL); 1576 } 1577 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1578 /* interface with this name exists */ 1579 h = ifa_lookup(ps, flags); 1580 for (n = h; n != NULL && mask > -1; n = n->next) 1581 set_ipmask(n, mask); 1582 } 1583 1584 free(ps); 1585 return (h); 1586 } 1587 1588 struct node_host * 1589 host_v4(const char *s, int mask) 1590 { 1591 struct node_host *h = NULL; 1592 struct in_addr ina; 1593 int bits = 32; 1594 1595 memset(&ina, 0, sizeof(struct in_addr)); 1596 if (strrchr(s, '/') != NULL) { 1597 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1598 return (NULL); 1599 } else { 1600 if (inet_pton(AF_INET, s, &ina) != 1) 1601 return (NULL); 1602 } 1603 1604 h = calloc(1, sizeof(struct node_host)); 1605 if (h == NULL) 1606 err(1, "address: calloc"); 1607 h->ifname = NULL; 1608 h->af = AF_INET; 1609 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1610 set_ipmask(h, bits); 1611 h->next = NULL; 1612 h->tail = h; 1613 1614 return (h); 1615 } 1616 1617 struct node_host * 1618 host_v6(const char *s, int mask) 1619 { 1620 struct addrinfo hints, *res; 1621 struct node_host *h = NULL; 1622 1623 memset(&hints, 0, sizeof(hints)); 1624 hints.ai_family = AF_INET6; 1625 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1626 hints.ai_flags = AI_NUMERICHOST; 1627 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1628 h = calloc(1, sizeof(struct node_host)); 1629 if (h == NULL) 1630 err(1, "address: calloc"); 1631 h->ifname = NULL; 1632 h->af = AF_INET6; 1633 memcpy(&h->addr.v.a.addr, 1634 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1635 sizeof(h->addr.v.a.addr)); 1636 h->ifindex = 1637 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1638 set_ipmask(h, mask); 1639 freeaddrinfo(res); 1640 h->next = NULL; 1641 h->tail = h; 1642 } 1643 1644 return (h); 1645 } 1646 1647 struct node_host * 1648 host_dns(const char *s, int v4mask, int v6mask) 1649 { 1650 struct addrinfo hints, *res0, *res; 1651 struct node_host *n, *h = NULL; 1652 int error, noalias = 0; 1653 int got4 = 0, got6 = 0; 1654 char *p, *ps; 1655 1656 if ((ps = strdup(s)) == NULL) 1657 err(1, "host_dns: strdup"); 1658 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1659 noalias = 1; 1660 *p = '\0'; 1661 } 1662 memset(&hints, 0, sizeof(hints)); 1663 hints.ai_family = PF_UNSPEC; 1664 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1665 error = getaddrinfo(ps, NULL, &hints, &res0); 1666 if (error) { 1667 free(ps); 1668 return (h); 1669 } 1670 1671 for (res = res0; res; res = res->ai_next) { 1672 if (res->ai_family != AF_INET && 1673 res->ai_family != AF_INET6) 1674 continue; 1675 if (noalias) { 1676 if (res->ai_family == AF_INET) { 1677 if (got4) 1678 continue; 1679 got4 = 1; 1680 } else { 1681 if (got6) 1682 continue; 1683 got6 = 1; 1684 } 1685 } 1686 n = calloc(1, sizeof(struct node_host)); 1687 if (n == NULL) 1688 err(1, "host_dns: calloc"); 1689 n->ifname = NULL; 1690 n->af = res->ai_family; 1691 if (res->ai_family == AF_INET) { 1692 memcpy(&n->addr.v.a.addr, 1693 &((struct sockaddr_in *) 1694 res->ai_addr)->sin_addr.s_addr, 1695 sizeof(struct in_addr)); 1696 set_ipmask(n, v4mask); 1697 } else { 1698 memcpy(&n->addr.v.a.addr, 1699 &((struct sockaddr_in6 *) 1700 res->ai_addr)->sin6_addr.s6_addr, 1701 sizeof(struct in6_addr)); 1702 n->ifindex = 1703 ((struct sockaddr_in6 *) 1704 res->ai_addr)->sin6_scope_id; 1705 set_ipmask(n, v6mask); 1706 } 1707 n->next = NULL; 1708 n->tail = n; 1709 if (h == NULL) 1710 h = n; 1711 else { 1712 h->tail->next = n; 1713 h->tail = n; 1714 } 1715 } 1716 freeaddrinfo(res0); 1717 free(ps); 1718 1719 return (h); 1720 } 1721 1722 /* 1723 * convert a hostname to a list of addresses and put them in the given buffer. 1724 * test: 1725 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1726 */ 1727 int 1728 append_addr(struct pfr_buffer *b, char *s, int test) 1729 { 1730 static int previous = 0; 1731 static int expect = 0; 1732 struct pfr_addr *a; 1733 struct node_host *h, *n; 1734 char *r; 1735 const char *errstr; 1736 int rv, not = 0, i = 0; 1737 u_int16_t weight; 1738 1739 /* skip weight if given */ 1740 if (strcmp(s, "weight") == 0) { 1741 expect = 1; 1742 return (1); /* expecting further call */ 1743 } 1744 1745 /* check if previous host is set */ 1746 if (expect) { 1747 /* parse and append load balancing weight */ 1748 weight = strtonum(s, 1, USHRT_MAX, &errstr); 1749 if (errstr) { 1750 fprintf(stderr, "failed to convert weight %s\n", s); 1751 return (-1); 1752 } 1753 if (previous != -1) { 1754 PFRB_FOREACH(a, b) { 1755 if (++i >= previous) { 1756 a->pfra_weight = weight; 1757 a->pfra_type = PFRKE_COST; 1758 } 1759 } 1760 } 1761 1762 expect = 0; 1763 return (0); 1764 } 1765 1766 for (r = s; *r == '!'; r++) 1767 not = !not; 1768 if ((n = host(r)) == NULL) { 1769 errno = 0; 1770 return (-1); 1771 } 1772 rv = append_addr_host(b, n, test, not); 1773 previous = b->pfrb_size; 1774 do { 1775 h = n; 1776 n = n->next; 1777 free(h); 1778 } while (n != NULL); 1779 return (rv); 1780 } 1781 1782 /* 1783 * same as previous function, but with a pre-parsed input and the ability 1784 * to "negate" the result. Does not free the node_host list. 1785 * not: 1786 * setting it to 1 is equivalent to adding "!" in front of parameter s. 1787 */ 1788 int 1789 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 1790 { 1791 int bits; 1792 struct pfr_addr addr; 1793 1794 do { 1795 bzero(&addr, sizeof(addr)); 1796 addr.pfra_not = n->not ^ not; 1797 addr.pfra_af = n->af; 1798 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 1799 if (n->ifname) { 1800 if (strlcpy(addr.pfra_ifname, n->ifname, 1801 sizeof(addr.pfra_ifname)) >= sizeof(addr.pfra_ifname)) 1802 errx(1, "append_addr_host: strlcpy"); 1803 addr.pfra_type = PFRKE_ROUTE; 1804 } 1805 if (n->weight > 0) { 1806 addr.pfra_weight = n->weight; 1807 addr.pfra_type = PFRKE_COST; 1808 } 1809 switch (n->af) { 1810 case AF_INET: 1811 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 1812 bits = 32; 1813 break; 1814 case AF_INET6: 1815 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 1816 sizeof(struct in6_addr)); 1817 bits = 128; 1818 break; 1819 default: 1820 errno = EINVAL; 1821 return (-1); 1822 } 1823 if ((test && (not || addr.pfra_net != bits)) || 1824 addr.pfra_net > bits) { 1825 errno = EINVAL; 1826 return (-1); 1827 } 1828 if (pfr_buf_add(b, &addr)) 1829 return (-1); 1830 } while ((n = n->next) != NULL); 1831 1832 return (0); 1833 } 1834 1835 int 1836 pfctl_add_trans(struct pfr_buffer *buf, int type, const char *anchor) 1837 { 1838 struct pfioc_trans_e trans; 1839 1840 bzero(&trans, sizeof(trans)); 1841 trans.type = type; 1842 if (strlcpy(trans.anchor, anchor, 1843 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 1844 errx(1, "pfctl_add_trans: strlcpy"); 1845 1846 return pfr_buf_add(buf, &trans); 1847 } 1848 1849 u_int32_t 1850 pfctl_get_ticket(struct pfr_buffer *buf, int type, const char *anchor) 1851 { 1852 struct pfioc_trans_e *p; 1853 1854 PFRB_FOREACH(p, buf) 1855 if (type == p->type && !strcmp(anchor, p->anchor)) 1856 return (p->ticket); 1857 errx(1, "pfctl_get_ticket: assertion failed"); 1858 } 1859 1860 int 1861 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 1862 { 1863 struct pfioc_trans trans; 1864 1865 bzero(&trans, sizeof(trans)); 1866 trans.size = buf->pfrb_size - from; 1867 trans.esize = sizeof(struct pfioc_trans_e); 1868 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 1869 return ioctl(dev, cmd, &trans); 1870 } 1871