1 /* 2 * Copyright (c) 2014 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Bill Yuan <bycn82@gmail.com> 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 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 3. Neither the name of The DragonFly Project nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific, prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <ctype.h> 36 #include <err.h> 37 #include <errno.h> 38 #include <grp.h> 39 #include <limits.h> 40 #include <netdb.h> 41 #include <pwd.h> 42 #include <signal.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <stdarg.h> 46 #include <string.h> 47 #include <sysexits.h> 48 #include <timeconv.h> 49 #include <unistd.h> 50 51 #include <netinet/in.h> 52 53 #include <arpa/inet.h> 54 #include <net/if.h> 55 #include <net/route.h> 56 #include <net/pfil.h> 57 58 #include "../../../sys/net/ipfw3/ip_fw3.h" 59 #include "../../../sbin/ipfw3/ipfw.h" 60 #include "ipfw3_basic.h" 61 62 63 #define IP_MASK_ALL 0xffffffff 64 /* 65 * we use IPPROTO_ETHERTYPE as a fake protocol id to call the print routines 66 * This is only used in this code. 67 */ 68 #define IPPROTO_ETHERTYPE 0x1000 69 70 71 struct char_int_map limit_types[] = { 72 { "src-addr", 1 }, 73 { "src-port", 2 }, 74 { "dst-addr", 3 }, 75 { "dst-port", 4 }, 76 { NULL, 0 } 77 }; 78 79 static struct char_int_map ether_types[] = { 80 { "ip", 0x0800 }, 81 { "ipv4", 0x0800 }, 82 { "ipv6", 0x86dd }, 83 { "arp", 0x0806 }, 84 { "rarp", 0x8035 }, 85 { "vlan", 0x8100 }, 86 { "loop", 0x9000 }, 87 { "trail", 0x1000 }, 88 { "pppoe_disc", 0x8863 }, 89 { "pppoe_sess", 0x8864 }, 90 { "ipx_8022", 0x00E0 }, 91 { "ipx_8023", 0x0000 }, 92 { "ipx_ii", 0x8137 }, 93 { "ipx_snap", 0x8137 }, 94 { "ipx", 0x8137 }, 95 { "ns", 0x0600 }, 96 { NULL, 0 } 97 }; 98 99 /** 100 * match_token takes a table and a string, returns the value associated 101 * with the string (0 meaning an error in most cases) 102 */ 103 static int 104 match_token(struct char_int_map *table, char *string) 105 { 106 while (table->key) { 107 if (strcmp(table->key, string) == 0) 108 return table->val; 109 110 table++; 111 } 112 return 0; 113 }; 114 115 static char * 116 match_token2(struct char_int_map *table, int val) 117 { 118 while (table->val) { 119 if (table->val == val) 120 return table->key; 121 122 table++; 123 } 124 return NULL; 125 }; 126 127 static void 128 fill_iface(ipfw_insn_if *cmd, char *arg) 129 { 130 cmd->name[0] = '\0'; 131 cmd->o.len |= F_INSN_SIZE(ipfw_insn_if); 132 133 /* Parse the interface or address */ 134 if (!strcmp(arg, "any")){ 135 cmd->o.len = 0; 136 } else if (!isdigit(*arg)) { 137 strlcpy(cmd->name, arg, sizeof(cmd->name)); 138 cmd->p.glob = strpbrk(arg, "*?[") != NULL ? 1 : 0; 139 } else if (!inet_aton(arg, &cmd->p.ip)) 140 errx(EX_DATAERR, "bad ip address ``%s''", arg); 141 } 142 143 static int 144 lookup_host (char *host, struct in_addr *ipaddr) 145 { 146 struct hostent *he; 147 148 if (!inet_aton(host, ipaddr)) { 149 if ((he = gethostbyname(host)) == NULL) 150 return(-1); 151 *ipaddr = *(struct in_addr *)he->h_addr_list[0]; 152 } 153 return(0); 154 } 155 156 /* 157 * Like strtol, but also translates service names into port numbers 158 * for some protocols. 159 * In particular: 160 * proto == -1 disables the protocol check; 161 * proto == IPPROTO_ETHERTYPE looks up an internal table 162 * proto == <some value in /etc/protocols> matches the values there. 163 * Returns *end == s in case the parameter is not found. 164 */ 165 static int 166 strtoport(char *s, char **end, int base, int proto) 167 { 168 char *p, *buf; 169 char *s1; 170 int i; 171 172 *end = s; /* default - not found */ 173 if ( *s == '\0') 174 return 0; /* not found */ 175 176 if (isdigit(*s)) 177 return strtol(s, end, base); 178 179 /* 180 * find separator. '\\' escapes the next char. 181 */ 182 for (s1 = s; *s1 && (isalnum(*s1) || *s1 == '\\') ; s1++) { 183 if (*s1 == '\\' && s1[1] != '\0') 184 s1++; 185 } 186 187 buf = malloc(s1 - s + 1); 188 if (buf == NULL) 189 return 0; 190 191 /* 192 * copy into a buffer skipping backslashes 193 */ 194 for (p = s, i = 0; p != s1 ; p++) 195 if ( *p != '\\') 196 buf[i++] = *p; 197 buf[i++] = '\0'; 198 199 if (proto == IPPROTO_ETHERTYPE) { 200 i = match_token(ether_types, buf); 201 free(buf); 202 if (i != -1) { /* found */ 203 *end = s1; 204 return i; 205 } 206 } else { 207 struct protoent *pe = NULL; 208 struct servent *se; 209 210 if (proto != 0) 211 pe = getprotobynumber(proto); 212 setservent(1); 213 se = getservbyname(buf, pe ? pe->p_name : NULL); 214 free(buf); 215 if (se != NULL) { 216 *end = s1; 217 return ntohs(se->s_port); 218 } 219 } 220 return 0; /* not found */ 221 } 222 223 static int 224 contigmask(u_char *p, int len) 225 { 226 int i, n; 227 for (i=0; i<len ; i++) { 228 if ( (p[i/8] & (1 << (7 - (i%8)))) == 0) /* first bit unset */ 229 break; 230 } 231 for (n=i+1; n < len; n++) { 232 if ( (p[n/8] & (1 << (7 - (n%8)))) != 0) 233 return -1; /* mask not contiguous */ 234 } 235 return i; 236 } 237 238 static ipfw_insn *add_proto(ipfw_insn *cmd, char *av) 239 { 240 struct protoent *pe; 241 u_char proto = 0; 242 if (!strncmp(av, "all", strlen(av))) { 243 ; 244 } else if ((proto = atoi(av)) > 0) { 245 ; 246 } else if ((pe = getprotobyname(av)) != NULL) { 247 proto = pe->p_proto; 248 } else { 249 errx(EX_USAGE, "protocol `%s' not recognizable\n", av); 250 } 251 if (proto != IPPROTO_IP) { 252 cmd->opcode = O_BASIC_PROTO; 253 cmd->module = MODULE_BASIC_ID; 254 cmd->len = cmd->len|LEN_OF_IPFWINSN; 255 cmd->arg1 = proto; 256 } 257 return cmd; 258 } 259 260 void 261 parse_count(ipfw_insn **cmd, int *ac, char **av[]) 262 { 263 (*cmd)->opcode = O_BASIC_COUNT; 264 (*cmd)->module = MODULE_BASIC_ID; 265 (*cmd)->len = LEN_OF_IPFWINSN; 266 NEXT_ARG1; 267 } 268 269 void 270 parse_skipto(ipfw_insn **cmd, int *ac, char **av[]) 271 { 272 NEXT_ARG1; 273 (*cmd)->opcode = O_BASIC_SKIPTO; 274 (*cmd)->module = MODULE_BASIC_ID; 275 (*cmd)->len = LEN_OF_IPFWINSN; 276 (*cmd)->arg1 = strtoul(**av, NULL, 10); 277 NEXT_ARG1; 278 } 279 280 /* 281 * cmd->arg3 is count of the destination 282 * cmd->arg1 is the type, random 0, round-robin 1, sticky 2 283 */ 284 void 285 parse_forward(ipfw_insn **cmd, int *ac, char **av[]) 286 { 287 ipfw_insn_sa *p = (ipfw_insn_sa *)(*cmd); 288 struct sockaddr_in *sa; 289 char *tok, *end = '\0'; 290 char *str; 291 int count, port; 292 293 (*cmd)->opcode = O_BASIC_FORWARD; 294 NEXT_ARG1; 295 /* 296 * multiple forward destinations are seperated by colon 297 * ip address and port are seperated by comma 298 * e.g. 192.168.1.1:80,192.168.1.2:8080 299 * 192.168.1.1,192.168.1.2 or keep the port the same 300 */ 301 tok = strtok(**av, ","); 302 sa = &p->sa; 303 count = 0; 304 while (tok != NULL) { 305 sa->sin_len = sizeof(struct sockaddr_in); 306 sa->sin_family = AF_INET; 307 sa->sin_port = 0; 308 str = strchr(tok,':'); 309 if (str != NULL) { 310 *(str++) = '\0'; 311 port = strtoport(str, &end, 0, 0); 312 sa->sin_port = (u_short)port; 313 } 314 lookup_host(tok, &(sa->sin_addr)); 315 tok = strtok (NULL, ","); 316 sa++; 317 count++; 318 } 319 (*cmd)->arg3 = count; 320 if (count == 0) { 321 errx(EX_DATAERR, "forward `%s' not recognizable", **av); 322 } 323 NEXT_ARG1; 324 if (count > 1) { 325 if (strcmp(**av, "round-robin") == 0) { 326 NEXT_ARG1; 327 (*cmd)->arg1 = 1; 328 } else if (strcmp(**av, "sticky") == 0) { 329 NEXT_ARG1; 330 (*cmd)->arg1 = 2; 331 } else { 332 /* random */ 333 (*cmd)->arg1 = 0; 334 } 335 } 336 (*cmd)->len = LEN_OF_IPFWINSN + count * sizeof(struct sockaddr_in); 337 } 338 339 void 340 parse_in(ipfw_insn **cmd, int *ac, char **av[]) 341 { 342 (*cmd)->opcode = O_BASIC_IN; 343 (*cmd)->module = MODULE_BASIC_ID; 344 (*cmd)->len = LEN_OF_IPFWINSN; 345 (*cmd)->arg1 = 0; 346 NEXT_ARG1; 347 } 348 349 void 350 parse_out(ipfw_insn **cmd, int *ac, char **av[]) 351 { 352 (*cmd)->opcode = O_BASIC_OUT; 353 (*cmd)->module = MODULE_BASIC_ID; 354 (*cmd)->len = LEN_OF_IPFWINSN; 355 (*cmd)->arg1 = 0; 356 NEXT_ARG1; 357 } 358 359 360 void 361 parse_via(ipfw_insn **cmd, int *ac, char **av[]) 362 { 363 (*cmd)->module = MODULE_BASIC_ID; 364 (*cmd)->len = LEN_OF_IPFWINSN; 365 if (strcmp(*av[0], "via")==0) { 366 (*cmd)->opcode = O_BASIC_VIA; 367 } else if (strcmp(*av[0], "xmit")==0) { 368 (*cmd)->opcode = O_BASIC_XMIT; 369 } else if (strcmp(*av[0], "recv")==0) { 370 (*cmd)->opcode = O_BASIC_RECV; 371 } 372 NEXT_ARG1; 373 fill_iface((ipfw_insn_if *)(*cmd), *av[0]); 374 NEXT_ARG1; 375 } 376 377 void 378 parse_src_port(ipfw_insn **cmd, int *ac, char **av[]) 379 { 380 381 NEXT_ARG1; 382 (*cmd)->opcode = O_BASIC_IP_SRCPORT; 383 (*cmd)->module = MODULE_BASIC_ID; 384 (*cmd)->len = LEN_OF_IPFWINSN; 385 double v = strtol(**av, NULL, 0); 386 if (v <= 0 || v >= 65535) 387 errx(EX_NOHOST, "port `%s' invalid", **av); 388 (*cmd)->arg1 = v; 389 NEXT_ARG1; 390 } 391 392 void 393 parse_dst_port(ipfw_insn **cmd, int *ac, char **av[]) 394 { 395 NEXT_ARG1; 396 (*cmd)->opcode = O_BASIC_IP_DSTPORT; 397 (*cmd)->module = MODULE_BASIC_ID; 398 (*cmd)->len = LEN_OF_IPFWINSN; 399 double v = strtol(**av, NULL, 0); 400 if (v <= 0 || v >= 65535) 401 errx(EX_NOHOST, "port `%s' invalid", **av); 402 (*cmd)->arg1 = v; 403 NEXT_ARG1; 404 } 405 406 /* 407 * Below formats are supported: 408 * from table 1 O_BASIC_IP_SRC_LOOKUP 409 * from any return 0 len instruction 410 * from me O_BASIC_IP_SRC_ME 411 * from 1.2.3.4 O_BASIC_IP_SRC 412 * from 1.2.3.4/24 O_BASIC_IP_SRC_MASK 413 */ 414 void 415 parse_from(ipfw_insn **cmd, int *ac, char **av[]) 416 { 417 ipfw_insn_ip *p = (ipfw_insn_ip *)(*cmd); 418 double port; 419 int i; 420 421 (*cmd)->module = MODULE_BASIC_ID; 422 NEXT_ARG1; 423 if (strcmp(**av, "table") == 0) { 424 NEXT_ARG1; 425 NEED(*ac, 1, "table id missing"); 426 (*cmd)->len = F_INSN_SIZE(ipfw_insn); 427 (*cmd)->opcode = O_BASIC_IP_SRC_LOOKUP; 428 (*cmd)->arg1 = strtoul(**av, NULL, 10); 429 } else if (strcmp(**av, "any") == 0) { 430 (*cmd)->len &= ~F_LEN_MASK; 431 } else if (strcmp(**av, "me") == 0) { 432 (*cmd)->len |= F_INSN_SIZE(ipfw_insn); 433 (*cmd)->opcode = O_BASIC_IP_SRC_ME; 434 } else { 435 char *c = NULL, md = 0; 436 c = strchr(**av, '/'); 437 if (!c) 438 c = strchr(**av, ':'); 439 if (c) { 440 md = *c; 441 *c++ = '\0'; 442 } 443 if (lookup_host(**av, &p->addr) != 0) 444 errx(EX_NOHOST, "hostname ``%s'' unknown", **av); 445 switch (md) { 446 case ':': 447 port = strtol(c, NULL, 0); 448 if (port <= 0 || port >= 65535) 449 errx(EX_NOHOST, "port `%s' invalid", c); 450 (*cmd)->arg1 = port; 451 (*cmd)->len |= F_INSN_SIZE(ipfw_insn_ip); 452 (*cmd)->opcode = O_BASIC_IP_SRC_N_PORT; 453 break; 454 case '/': 455 i = atoi(c); 456 if (i == 0) 457 p->mask.s_addr = htonl(0); 458 else if (i > 32) 459 errx(EX_DATAERR, "bad width ``%s''", c); 460 else 461 p->mask.s_addr = htonl(~0 << (32 - i)); 462 (*cmd)->len |= F_INSN_SIZE(ipfw_insn_ip); 463 (*cmd)->opcode = O_BASIC_IP_SRC_MASK; 464 p->addr.s_addr &= p->mask.s_addr; 465 break; 466 default: 467 p->mask.s_addr = htonl(~0); 468 (*cmd)->len |= F_INSN_SIZE(ipfw_insn_u32); 469 (*cmd)->opcode = O_BASIC_IP_SRC; 470 break; 471 } 472 } 473 NEXT_ARG1; 474 } 475 476 void 477 parse_to(ipfw_insn **cmd, int *ac, char **av[]) 478 { 479 ipfw_insn_ip *p = (ipfw_insn_ip *)(*cmd); 480 double port; 481 int i; 482 483 (*cmd)->module = MODULE_BASIC_ID; 484 NEXT_ARG1; 485 if (strcmp(**av, "table") == 0) { 486 NEXT_ARG1; 487 NEED(*ac, 1, "table id missing"); 488 (*cmd)->len = F_INSN_SIZE(ipfw_insn); 489 (*cmd)->opcode = O_BASIC_IP_DST_LOOKUP; 490 (*cmd)->arg1 = strtoul(**av, NULL, 10); 491 } else if (strcmp(**av, "any") == 0) { 492 (*cmd)->len &= ~F_LEN_MASK; 493 } else if (strcmp(**av, "me") == 0) { 494 (*cmd)->len |= F_INSN_SIZE(ipfw_insn); 495 (*cmd)->opcode = O_BASIC_IP_DST_ME; 496 } else { 497 char *c = NULL, md = 0; 498 c = strchr(**av, '/'); 499 if (!c) 500 c = strchr(**av, ':'); 501 if (c) { 502 md = *c; 503 *c++ = '\0'; 504 } 505 if (lookup_host(**av, &p->addr) != 0) 506 errx(EX_NOHOST, "hostname ``%s'' unknown", **av); 507 switch (md) { 508 case ':': 509 port = strtol(c, NULL, 0); 510 if (port <= 0 || port >= 65535) 511 errx(EX_NOHOST, "port `%s' invalid", c); 512 (*cmd)->arg1 = port; 513 (*cmd)->len |= F_INSN_SIZE(ipfw_insn_ip); 514 (*cmd)->opcode = O_BASIC_IP_DST_N_PORT; 515 break; 516 case '/': 517 i = atoi(c); 518 if (i == 0) 519 p->mask.s_addr = htonl(0); 520 else if (i > 32) 521 errx(EX_DATAERR, "bad width ``%s''", c); 522 else 523 p->mask.s_addr = htonl(~0 << (32 - i)); 524 (*cmd)->len |= F_INSN_SIZE(ipfw_insn_ip); 525 (*cmd)->opcode = O_BASIC_IP_DST_MASK; 526 p->addr.s_addr &= p->mask.s_addr; 527 break; 528 default: 529 p->mask.s_addr = htonl(~0); 530 (*cmd)->len |= F_INSN_SIZE(ipfw_insn_u32); 531 (*cmd)->opcode = O_BASIC_IP_DST; 532 break; 533 } 534 } 535 NEXT_ARG1; 536 537 } 538 539 void 540 parse_proto(ipfw_insn **cmd, int *ac, char **av[]) 541 { 542 add_proto(*cmd, **av); 543 NEXT_ARG1; 544 } 545 546 void 547 parse_prob(ipfw_insn **cmd, int *ac, char **av[]) 548 { 549 NEXT_ARG1; 550 (*cmd)->opcode = O_BASIC_PROB; 551 (*cmd)->module = MODULE_BASIC_ID; 552 (*cmd)->len = LEN_OF_IPFWINSN; 553 (*cmd)->arg1 = strtoul(**av, NULL, 10); 554 NEXT_ARG1; 555 } 556 557 void 558 parse_keep_state(ipfw_insn **cmd, int *ac, char **av[]) 559 { 560 NEXT_ARG1; 561 (*cmd)->opcode = O_BASIC_KEEP_STATE; 562 (*cmd)->module = MODULE_BASIC_ID; 563 (*cmd)->len = LEN_OF_IPFWINSN; 564 if (strcmp(**av, "limit") == 0) { 565 NEXT_ARG1; 566 (*cmd)->arg3 = match_token(limit_types, **av); 567 if ((*cmd)->arg3 == 0) 568 errx(EX_DATAERR, "limit `%s' not recognizable", **av); 569 570 NEXT_ARG1; 571 (*cmd)->arg1 = strtoul(**av, NULL, 10); 572 if ((*cmd)->arg1 == 0) 573 errx(EX_DATAERR, "bad limit `%s'", **av); 574 575 NEXT_ARG1; 576 } 577 if (strcmp(**av, "live") == 0) { 578 NEXT_ARG1; 579 (*cmd)->arg2 = strtoul(**av, NULL, 10); 580 NEXT_ARG1; 581 } 582 } 583 584 void 585 parse_check_state(ipfw_insn **cmd, int *ac, char **av[]) 586 { 587 NEXT_ARG1; 588 (*cmd)->opcode = O_BASIC_CHECK_STATE; 589 (*cmd)->module = MODULE_BASIC_ID; 590 (*cmd)->len = LEN_OF_IPFWINSN; 591 } 592 593 void 594 parse_tagged(ipfw_insn **cmd, int *ac, char **av[]) 595 { 596 NEXT_ARG1; 597 (*cmd)->opcode = O_BASIC_TAGGED; 598 (*cmd)->module = MODULE_BASIC_ID; 599 (*cmd)->len = LEN_OF_IPFWINSN; 600 (*cmd)->arg1 = strtoul(**av, NULL, 10); 601 NEXT_ARG1; 602 } 603 604 void 605 parse_comment(ipfw_insn **cmd, int *ac, char **av[]) 606 { 607 int l = 0; 608 char *p = (char *)((*cmd) + 1); 609 610 NEXT_ARG1; 611 (*cmd)->opcode = O_BASIC_COMMENT; 612 (*cmd)->module = MODULE_BASIC_ID; 613 614 while (*ac > 0) { 615 l += strlen(**av) + 1; 616 if (l > 84) { 617 errx(EX_DATAERR, "comment too long (max 80 chars)"); 618 } 619 strcpy(p, **av); 620 p += strlen(**av); 621 *p++ = ' '; 622 NEXT_ARG1; 623 } 624 l = 1 + (l + 3) / 4; 625 (*cmd)->len = l; 626 *(--p) = '\0'; 627 } 628 629 void 630 parse_tag(ipfw_insn **cmd, int *ac, char **av[]) 631 { 632 NEXT_ARG1; 633 (*cmd)->opcode = O_BASIC_TAG; 634 (*cmd)->module = MODULE_BASIC_ID; 635 (*cmd)->len = LEN_OF_IPFWINSN; 636 (*cmd)->arg1 = strtoul(**av, NULL, 10); 637 NEXT_ARG1; 638 } 639 640 void 641 parse_untag(ipfw_insn **cmd, int *ac, char **av[]) 642 { 643 NEXT_ARG1; 644 (*cmd)->opcode = O_BASIC_UNTAG; 645 (*cmd)->module = MODULE_BASIC_ID; 646 (*cmd)->len = LEN_OF_IPFWINSN; 647 (*cmd)->arg1 = strtoul(**av, NULL, 10); 648 NEXT_ARG1; 649 } 650 651 void 652 show_count(ipfw_insn *cmd, int show_or) 653 { 654 printf(" count"); 655 } 656 657 void 658 show_skipto(ipfw_insn *cmd, int show_or) 659 { 660 printf(" skipto %u", cmd->arg1); 661 } 662 663 void 664 show_forward(ipfw_insn *cmd, int show_or) 665 { 666 struct sockaddr_in *sa; 667 int i; 668 669 ipfw_insn_sa *s = (ipfw_insn_sa *)cmd; 670 sa = &s->sa; 671 printf(" forward"); 672 for (i = 0; i < cmd->arg3; i++){ 673 if (i > 0) 674 printf(","); 675 else 676 printf(" "); 677 678 printf("%s", inet_ntoa(sa->sin_addr)); 679 if (sa->sin_port != 0) 680 printf(":%d", sa->sin_port); 681 682 sa++; 683 } 684 if (cmd->arg1 == 1) 685 printf(" round-robin"); 686 else if (cmd->arg1 == 2) 687 printf(" sticky"); 688 689 } 690 691 void 692 show_in(ipfw_insn *cmd, int show_or) 693 { 694 printf(" in"); 695 } 696 697 void 698 show_out(ipfw_insn *cmd, int show_or) 699 { 700 printf(" out"); 701 } 702 703 void 704 show_via(ipfw_insn *cmd, int show_or) 705 { 706 char *s; 707 ipfw_insn_if *cmdif = (ipfw_insn_if *)cmd; 708 709 if ((int)cmd->opcode == O_BASIC_XMIT) 710 s = "xmit"; 711 else if ((int)cmd->opcode == O_BASIC_RECV) 712 s = "recv"; 713 else if ((int)cmd->opcode == O_BASIC_VIA) 714 s = "via"; 715 else 716 s = "?huh?"; 717 if (show_or) 718 s = "or"; 719 if (cmdif->name[0] == '\0') 720 printf(" %s %s", s, inet_ntoa(cmdif->p.ip)); 721 722 printf(" %s %s", s, cmdif->name); 723 } 724 725 void 726 show_src_port(ipfw_insn *cmd, int show_or) 727 { 728 printf(" src-port %d", cmd->arg1); 729 } 730 731 void 732 show_dst_port(ipfw_insn *cmd, int show_or) 733 { 734 printf(" dst-port %d", cmd->arg1); 735 } 736 737 void 738 show_from(ipfw_insn *cmd, int show_or) 739 { 740 char *word = "from"; 741 if (show_or) 742 word = "or"; 743 printf(" %s %s", word, inet_ntoa(((ipfw_insn_ip *)cmd)->addr)); 744 } 745 746 void 747 show_from_lookup(ipfw_insn *cmd, int show_or) 748 { 749 char *word = "from"; 750 if (show_or) 751 word = "or"; 752 printf(" %s table %d", word, cmd->arg1); 753 } 754 755 void 756 show_from_me(ipfw_insn *cmd, int show_or) 757 { 758 char *word = "from"; 759 if (show_or) 760 word = "or"; 761 printf(" %s me", word); 762 } 763 764 void 765 show_from_mask(ipfw_insn *cmd, int show_or) 766 { 767 int mask; 768 char *word = "from"; 769 if (show_or) 770 word = "or"; 771 ipfw_insn_ip *p = (ipfw_insn_ip *)cmd; 772 printf(" %s %s", word, inet_ntoa(p->addr)); 773 774 mask = contigmask((u_char *)&(p->mask.s_addr), 32); 775 if (mask < 32) 776 printf("/%d", mask); 777 } 778 779 void 780 show_from_src_n_port(ipfw_insn *cmd, int show_or) 781 { 782 char *word = "from"; 783 if (show_or) 784 word = "or"; 785 ipfw_insn_ip *p = (ipfw_insn_ip *)cmd; 786 printf(" %s %s", word, inet_ntoa(p->addr)); 787 printf(":%d", cmd->arg1); 788 } 789 790 void 791 show_to(ipfw_insn *cmd, int show_or) 792 { 793 char *word = "to"; 794 if (show_or) 795 word = "or"; 796 ipfw_insn_ip *p = (ipfw_insn_ip *)cmd; 797 printf(" %s %s", word, inet_ntoa(p->addr)); 798 } 799 800 void 801 show_to_lookup(ipfw_insn *cmd, int show_or) 802 { 803 char *word = "to"; 804 if (show_or) 805 word = "or"; 806 printf(" %s table %d", word, cmd->arg1); 807 } 808 809 void 810 show_to_me(ipfw_insn *cmd, int show_or) 811 { 812 char *word = "to"; 813 if (show_or) 814 word = "or"; 815 printf(" %s me", word); 816 } 817 818 void 819 show_to_mask(ipfw_insn *cmd, int show_or) 820 { 821 int mask; 822 char *word = "to"; 823 if (show_or) 824 word = "or"; 825 ipfw_insn_ip *p = (ipfw_insn_ip *)cmd; 826 printf(" %s %s", word, inet_ntoa(p->addr)); 827 828 mask = contigmask((u_char *)&(p->mask.s_addr), 32); 829 if (mask < 32) 830 printf("/%d", mask); 831 } 832 833 void 834 show_to_src_n_port(ipfw_insn *cmd, int show_or) 835 { 836 char *word = "to"; 837 if (show_or) 838 word = "or"; 839 printf(" %s %s", word, inet_ntoa(((ipfw_insn_ip *)cmd)->addr)); 840 printf(":%d", cmd->arg1); 841 } 842 843 void 844 show_proto(ipfw_insn *cmd, int show_or) 845 { 846 struct protoent *pe; 847 u_char proto = 0; 848 proto = cmd->arg1; 849 pe = getprotobynumber(cmd->arg1); 850 printf(" %s", pe->p_name); 851 } 852 853 void 854 show_prob(ipfw_insn *cmd, int show_or) 855 { 856 printf(" prob %d%%", cmd->arg1); 857 } 858 859 void 860 show_keep_state(ipfw_insn *cmd, int show_or) 861 { 862 printf(" keep-state"); 863 if (cmd->arg1 != 0) { 864 char *type=match_token2(limit_types, cmd->arg3); 865 printf(" limit %s %d", type, cmd->arg1); 866 } 867 if (cmd->arg2 != 0) { 868 printf(" live %d", cmd->arg2); 869 } 870 } 871 872 void 873 show_check_state(ipfw_insn *cmd, int show_or) 874 { 875 printf(" check-state"); 876 } 877 878 void 879 show_tagged(ipfw_insn *cmd, int show_or) 880 { 881 printf(" tagged %d", cmd->arg1); 882 } 883 884 void 885 show_comment(ipfw_insn *cmd, int show_or) 886 { 887 printf(" // %s", (char *)(cmd + 1)); 888 } 889 890 void 891 show_tag(ipfw_insn *cmd, int show_or) 892 { 893 printf(" tag %d", cmd->arg1); 894 } 895 896 void 897 show_untag(ipfw_insn *cmd, int show_or) 898 { 899 printf(" untag %d", cmd->arg1); 900 } 901 902 void 903 load_module(register_func function, register_keyword keyword) 904 { 905 keyword(MODULE_BASIC_ID, O_BASIC_COUNT, "count", ACTION); 906 function(MODULE_BASIC_ID, O_BASIC_COUNT, 907 (parser_func)parse_count, (shower_func)show_count); 908 909 keyword(MODULE_BASIC_ID, O_BASIC_SKIPTO, "skipto", ACTION); 910 function(MODULE_BASIC_ID, O_BASIC_SKIPTO, 911 (parser_func)parse_skipto, (shower_func)show_skipto); 912 913 keyword(MODULE_BASIC_ID, O_BASIC_FORWARD, "forward", ACTION); 914 function(MODULE_BASIC_ID, O_BASIC_FORWARD, 915 (parser_func)parse_forward, (shower_func)show_forward); 916 917 keyword(MODULE_BASIC_ID, O_BASIC_IN, "in", FILTER); 918 function(MODULE_BASIC_ID, O_BASIC_IN, 919 (parser_func)parse_in, (shower_func)show_in); 920 921 keyword(MODULE_BASIC_ID, O_BASIC_OUT, "out", FILTER); 922 function(MODULE_BASIC_ID, O_BASIC_OUT, 923 (parser_func)parse_out, (shower_func)show_out); 924 925 keyword(MODULE_BASIC_ID, O_BASIC_VIA, "via", FILTER); 926 function(MODULE_BASIC_ID, O_BASIC_VIA, 927 (parser_func)parse_via, (shower_func)show_via); 928 929 keyword(MODULE_BASIC_ID, O_BASIC_XMIT, "xmit", FILTER); 930 function(MODULE_BASIC_ID, O_BASIC_XMIT, 931 (parser_func)parse_via, (shower_func)show_via); 932 933 keyword(MODULE_BASIC_ID, O_BASIC_RECV, "recv", FILTER); 934 function(MODULE_BASIC_ID, O_BASIC_RECV, 935 (parser_func)parse_via, (shower_func)show_via); 936 937 keyword(MODULE_BASIC_ID, O_BASIC_IP_SRCPORT, "src-port", FILTER); 938 function(MODULE_BASIC_ID, O_BASIC_IP_SRCPORT, 939 (parser_func)parse_src_port, (shower_func)show_src_port); 940 941 keyword(MODULE_BASIC_ID, O_BASIC_IP_DSTPORT, "dst-port", FILTER); 942 function(MODULE_BASIC_ID, O_BASIC_IP_DSTPORT, 943 (parser_func)parse_dst_port, (shower_func)show_dst_port); 944 945 keyword(MODULE_BASIC_ID, O_BASIC_IP_SRC, "from", FROM); 946 function(MODULE_BASIC_ID, O_BASIC_IP_SRC, 947 (parser_func)parse_from, (shower_func)show_from); 948 949 keyword(MODULE_BASIC_ID, O_BASIC_IP_SRC_LOOKUP, "from-[table]", FROM); 950 function(MODULE_BASIC_ID, O_BASIC_IP_SRC_LOOKUP, 951 (parser_func)parse_from, (shower_func)show_from_lookup); 952 953 keyword(MODULE_BASIC_ID, O_BASIC_IP_SRC_ME, "from-[me]", FROM); 954 function(MODULE_BASIC_ID, O_BASIC_IP_SRC_ME, 955 (parser_func)parse_from, (shower_func)show_from_me); 956 957 keyword(MODULE_BASIC_ID, O_BASIC_IP_SRC_MASK, "from-[mask]", FROM); 958 function(MODULE_BASIC_ID, O_BASIC_IP_SRC_MASK, 959 (parser_func)parse_from, (shower_func)show_from_mask); 960 961 keyword(MODULE_BASIC_ID, O_BASIC_IP_SRC_N_PORT, "from-[ip:port]", FROM); 962 function(MODULE_BASIC_ID, O_BASIC_IP_SRC_N_PORT, 963 (parser_func)parse_from, (shower_func)show_from_src_n_port); 964 965 keyword(MODULE_BASIC_ID, O_BASIC_IP_DST, "to", TO); 966 function(MODULE_BASIC_ID, O_BASIC_IP_DST, 967 (parser_func)parse_to, (shower_func)show_to); 968 969 keyword(MODULE_BASIC_ID, O_BASIC_IP_DST_LOOKUP, "to-[table]", TO); 970 function(MODULE_BASIC_ID, O_BASIC_IP_DST_LOOKUP, 971 (parser_func)parse_to, (shower_func)show_to_lookup); 972 973 keyword(MODULE_BASIC_ID, O_BASIC_IP_DST_ME, "to-[me]", TO); 974 function(MODULE_BASIC_ID, O_BASIC_IP_DST_ME, 975 (parser_func)parse_to, (shower_func)show_to_me); 976 977 keyword(MODULE_BASIC_ID, O_BASIC_IP_DST_MASK, "to-[mask]", TO); 978 function(MODULE_BASIC_ID, O_BASIC_IP_DST_MASK, 979 (parser_func)parse_to, (shower_func)show_to_mask); 980 981 keyword(MODULE_BASIC_ID, O_BASIC_IP_DST_N_PORT, "to-[ip:port]", FROM); 982 function(MODULE_BASIC_ID, O_BASIC_IP_DST_N_PORT, 983 (parser_func)parse_to, (shower_func)show_to_src_n_port); 984 985 keyword(MODULE_BASIC_ID, O_BASIC_PROTO, "proto", PROTO); 986 function(MODULE_BASIC_ID, O_BASIC_PROTO, 987 (parser_func)parse_proto, (shower_func)show_proto); 988 989 keyword(MODULE_BASIC_ID, O_BASIC_PROB, "prob", FILTER); 990 function(MODULE_BASIC_ID, O_BASIC_PROB, 991 (parser_func)parse_prob, (shower_func)show_prob); 992 993 keyword(MODULE_BASIC_ID, O_BASIC_KEEP_STATE, "keep-state", FILTER); 994 function(MODULE_BASIC_ID, O_BASIC_KEEP_STATE, 995 (parser_func)parse_keep_state, 996 (shower_func)show_keep_state); 997 998 keyword(MODULE_BASIC_ID, O_BASIC_CHECK_STATE, "check-state", BEFORE); 999 function(MODULE_BASIC_ID, O_BASIC_CHECK_STATE, 1000 (parser_func)parse_check_state, 1001 (shower_func)show_check_state); 1002 1003 keyword(MODULE_BASIC_ID, O_BASIC_TAG, "tag", ACTION); 1004 function(MODULE_BASIC_ID, O_BASIC_TAG, 1005 (parser_func)parse_tag, (shower_func)show_tag); 1006 1007 keyword(MODULE_BASIC_ID, O_BASIC_UNTAG, "untag", ACTION); 1008 function(MODULE_BASIC_ID, O_BASIC_UNTAG, 1009 (parser_func)parse_untag, (shower_func)show_untag); 1010 1011 keyword(MODULE_BASIC_ID, O_BASIC_TAGGED, "tagged", FILTER); 1012 function(MODULE_BASIC_ID, O_BASIC_TAGGED, 1013 (parser_func)parse_tagged, (shower_func)show_tagged); 1014 1015 keyword(MODULE_BASIC_ID, O_BASIC_COMMENT, "//", AFTER); 1016 function(MODULE_BASIC_ID, O_BASIC_COMMENT, 1017 (parser_func)parse_comment, (shower_func)show_comment); 1018 } 1019