ping6.c revision 1.39
1 /* $NetBSD: ping6.c,v 1.39 2002/01/09 12:30:15 darrenr Exp $ */ 2 /* $KAME: ping6.c,v 1.129 2001/06/22 13:16:02 itojun Exp $ */ 3 4 /* 5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 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 * 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 the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the project nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 /* BSDI ping.c,v 2.3 1996/01/21 17:56:50 jch Exp */ 34 35 /* 36 * Copyright (c) 1989, 1993 37 * The Regents of the University of California. All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Mike Muuss. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 #if 0 72 #ifndef lint 73 static char copyright[] = 74 "@(#) Copyright (c) 1989, 1993\n\ 75 The Regents of the University of California. All rights reserved.\n"; 76 #endif /* not lint */ 77 78 #ifndef lint 79 static char sccsid[] = "@(#)ping.c 8.1 (Berkeley) 6/5/93"; 80 #endif /* not lint */ 81 #else 82 #include <sys/cdefs.h> 83 #ifndef lint 84 __RCSID("$NetBSD: ping6.c,v 1.39 2002/01/09 12:30:15 darrenr Exp $"); 85 #endif 86 #endif 87 88 /* 89 * Using the InterNet Control Message Protocol (ICMP) "ECHO" facility, 90 * measure round-trip-delays and packet loss across network paths. 91 * 92 * Author - 93 * Mike Muuss 94 * U. S. Army Ballistic Research Laboratory 95 * December, 1983 96 * 97 * Status - 98 * Public Domain. Distribution Unlimited. 99 * Bugs - 100 * More statistics could always be gathered. 101 * This program has to run SUID to ROOT to access the ICMP socket. 102 */ 103 /* 104 * NOTE: 105 * USE_SIN6_SCOPE_ID assumes that sin6_scope_id has the same semantics 106 * as IPV6_PKTINFO. Some people object it (sin6_scope_id specifies *link* 107 * while IPV6_PKTINFO specifies *interface*. Link is defined as collection of 108 * network attached to 1 or more interfaces) 109 */ 110 111 #include <sys/param.h> 112 #include <sys/uio.h> 113 #include <sys/socket.h> 114 #include <sys/time.h> 115 116 #include <net/if.h> 117 #include <net/route.h> 118 119 #include <netinet/in.h> 120 #include <netinet/ip6.h> 121 #include <netinet/icmp6.h> 122 #include <arpa/inet.h> 123 #include <arpa/nameser.h> 124 #include <netdb.h> 125 126 #include <ctype.h> 127 #include <err.h> 128 #include <errno.h> 129 #include <fcntl.h> 130 #if defined(__OpenBSD__) || defined(__NetBSD__) 131 #include <math.h> 132 #endif 133 #include <signal.h> 134 #include <stdio.h> 135 #include <stdlib.h> 136 #include <string.h> 137 #include <unistd.h> 138 139 #ifdef IPSEC 140 #include <netinet6/ah.h> 141 #include <netinet6/ipsec.h> 142 #endif 143 144 #if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__) 145 #include <md5.h> 146 #else 147 #include "md5.h" 148 #endif 149 150 /* portability */ 151 #if (defined(__bsdi__) && _BSDI_VERSION < 199802) || (defined(__FreeBSD__) && __FreeBSD__ < 3) 152 #define socklen_t int 153 #endif 154 155 #define MAXPACKETLEN 131072 156 #define IP6LEN 40 157 #define ICMP6ECHOLEN 8 /* icmp echo header len excluding time */ 158 #define ICMP6ECHOTMLEN sizeof(struct timeval) 159 #define ICMP6_NIQLEN (ICMP6ECHOLEN + 8) 160 /* FQDN case, 64 bits of nonce + 32 bits ttl */ 161 #define ICMP6_NIRLEN (ICMP6ECHOLEN + 12) 162 #define EXTRA 256 /* for AH and various other headers. weird. */ 163 #define DEFDATALEN ICMP6ECHOTMLEN 164 #define MAXDATALEN MAXPACKETLEN - IP6LEN - ICMP6ECHOLEN 165 #define NROUTES 9 /* number of record route slots */ 166 167 #define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */ 168 #define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */ 169 #define SET(bit) (A(bit) |= B(bit)) 170 #define CLR(bit) (A(bit) &= (~B(bit))) 171 #define TST(bit) (A(bit) & B(bit)) 172 173 #define F_FLOOD 0x0001 174 #define F_INTERVAL 0x0002 175 #define F_PINGFILLED 0x0008 176 #define F_QUIET 0x0010 177 #define F_RROUTE 0x0020 178 #define F_SO_DEBUG 0x0040 179 #define F_VERBOSE 0x0100 180 #ifdef IPSEC 181 #ifdef IPSEC_POLICY_IPSEC 182 #define F_POLICY 0x0400 183 #else 184 #define F_AUTHHDR 0x0200 185 #define F_ENCRYPT 0x0400 186 #endif /*IPSEC_POLICY_IPSEC*/ 187 #endif /*IPSEC*/ 188 #define F_NODEADDR 0x0800 189 #define F_FQDN 0x1000 190 #define F_INTERFACE 0x2000 191 #define F_SRCADDR 0x4000 192 #ifdef IPV6_REACHCONF 193 #define F_REACHCONF 0x8000 194 #endif 195 #define F_HOSTNAME 0x10000 196 #define F_FQDNOLD 0x20000 197 #define F_NIGROUP 0x40000 198 #define F_SUPTYPES 0x80000 199 #define F_NOMINMTU 0x100000 200 #define F_NOUSERDATA (F_NODEADDR | F_FQDN | F_FQDNOLD | F_SUPTYPES) 201 u_int options; 202 203 #define IN6LEN sizeof(struct in6_addr) 204 #define SA6LEN sizeof(struct sockaddr_in6) 205 #define DUMMY_PORT 10101 206 207 #define SIN6(s) ((struct sockaddr_in6 *)(s)) 208 209 /* 210 * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum 211 * number of received sequence numbers we can keep track of. Change 128 212 * to 8192 for complete accuracy... 213 */ 214 #define MAX_DUP_CHK (8 * 8192) 215 int mx_dup_ck = MAX_DUP_CHK; 216 char rcvd_tbl[MAX_DUP_CHK / 8]; 217 218 struct addrinfo *res; 219 struct sockaddr_in6 dst; /* who to ping6 */ 220 struct sockaddr_in6 src; /* src addr of this packet */ 221 socklen_t srclen; 222 int datalen = DEFDATALEN; 223 int s; /* socket file descriptor */ 224 u_char outpack[MAXPACKETLEN]; 225 char BSPACE = '\b'; /* characters written for flood */ 226 char DOT = '.'; 227 char *hostname; 228 int ident; /* process id to identify our packets */ 229 u_int8_t nonce[8]; /* nonce field for node information */ 230 int hoplimit = -1; /* hoplimit */ 231 int pathmtu = 0; /* path MTU for the destination. 0 = unspec. */ 232 233 /* counters */ 234 long npackets; /* max packets to transmit */ 235 long nreceived; /* # of packets we got back */ 236 long nrepeats; /* number of duplicates */ 237 long ntransmitted; /* sequence # for outbound packets = #sent */ 238 struct timeval interval = {1, 0}; /* interval between packets */ 239 240 /* timing */ 241 int timing; /* flag to do timing */ 242 double tmin = 999999999.0; /* minimum round trip time */ 243 double tmax = 0.0; /* maximum round trip time */ 244 double tsum = 0.0; /* sum of all times, for doing average */ 245 #if defined(__OpenBSD__) || defined(__NetBSD__) 246 double tsumsq = 0.0; /* sum of all times squared, for std. dev. */ 247 #endif 248 249 /* for node addresses */ 250 u_short naflags; 251 252 /* for ancillary data(advanced API) */ 253 struct msghdr smsghdr; 254 struct iovec smsgiov; 255 char *scmsg = 0; 256 257 volatile int signo; 258 volatile sig_atomic_t seenalrm; 259 volatile sig_atomic_t seenint; 260 #ifdef SIGINFO 261 volatile sig_atomic_t seeninfo; 262 #endif 263 264 int main __P((int, char *[])); 265 void fill __P((char *, char *)); 266 int get_hoplim __P((struct msghdr *)); 267 int get_pathmtu __P((struct msghdr *)); 268 struct in6_pktinfo *get_rcvpktinfo __P((struct msghdr *)); 269 void onsignal __P((int)); 270 void retransmit __P((void)); 271 void onint __P((int)); 272 size_t pingerlen __P((void)); 273 int pinger __P((void)); 274 const char *pr_addr __P((struct sockaddr *, int)); 275 void pr_icmph __P((struct icmp6_hdr *, u_char *)); 276 void pr_iph __P((struct ip6_hdr *)); 277 void pr_suptypes __P((struct icmp6_nodeinfo *, size_t)); 278 void pr_nodeaddr __P((struct icmp6_nodeinfo *, int)); 279 int myechoreply __P((const struct icmp6_hdr *)); 280 int mynireply __P((const struct icmp6_nodeinfo *)); 281 char *dnsdecode __P((const u_char **, const u_char *, const u_char *, 282 u_char *, size_t)); 283 void pr_pack __P((u_char *, int, struct msghdr *)); 284 void pr_exthdrs __P((struct msghdr *)); 285 void pr_ip6opt __P((void *)); 286 void pr_rthdr __P((void *)); 287 int pr_bitrange __P((u_int32_t, int, int)); 288 void pr_retip __P((struct ip6_hdr *, u_char *)); 289 void summary __P((void)); 290 void tvsub __P((struct timeval *, struct timeval *)); 291 int setpolicy __P((int, char *)); 292 char *nigroup __P((char *)); 293 void usage __P((void)); 294 295 int 296 main(argc, argv) 297 int argc; 298 char *argv[]; 299 { 300 struct itimerval itimer; 301 struct sockaddr_in6 from; 302 struct timeval timeout, *tv; 303 struct addrinfo hints; 304 fd_set *fdmaskp; 305 int fdmasks; 306 register int cc, i; 307 int ch, fromlen, hold, packlen, preload, optval, ret_ga; 308 u_char *datap, *packet; 309 char *e, *target, *ifname = NULL; 310 int ip6optlen = 0; 311 struct cmsghdr *scmsgp = NULL; 312 int sockbufsize = 0; 313 int usepktinfo = 0; 314 struct in6_pktinfo *pktinfo = NULL; 315 #ifdef USE_RFC2292BIS 316 struct ip6_rthdr *rthdr = NULL; 317 #endif 318 #ifdef IPSEC_POLICY_IPSEC 319 char *policy_in = NULL; 320 char *policy_out = NULL; 321 #endif 322 double intval; 323 size_t rthlen; 324 325 /* just to be sure */ 326 memset(&smsghdr, 0, sizeof(&smsghdr)); 327 memset(&smsgiov, 0, sizeof(&smsgiov)); 328 329 preload = 0; 330 datap = &outpack[ICMP6ECHOLEN + ICMP6ECHOTMLEN]; 331 #ifndef IPSEC 332 #define ADDOPTS 333 #else 334 #ifdef IPSEC_POLICY_IPSEC 335 #define ADDOPTS "P:" 336 #else 337 #define ADDOPTS "AE" 338 #endif /*IPSEC_POLICY_IPSEC*/ 339 #endif 340 while ((ch = getopt(argc, argv, 341 "a:b:c:dfHh:I:i:l:mnNp:qRS:s:tvwW" ADDOPTS)) != -1) { 342 #undef ADDOPTS 343 switch (ch) { 344 case 'a': 345 { 346 char *cp; 347 348 options &= ~F_NOUSERDATA; 349 options |= F_NODEADDR; 350 for (cp = optarg; *cp != '\0'; cp++) { 351 switch (*cp) { 352 case 'a': 353 naflags |= NI_NODEADDR_FLAG_ALL; 354 break; 355 case 'c': 356 case 'C': 357 naflags |= NI_NODEADDR_FLAG_COMPAT; 358 break; 359 case 'l': 360 case 'L': 361 naflags |= NI_NODEADDR_FLAG_LINKLOCAL; 362 break; 363 case 's': 364 case 'S': 365 naflags |= NI_NODEADDR_FLAG_SITELOCAL; 366 break; 367 case 'g': 368 case 'G': 369 naflags |= NI_NODEADDR_FLAG_GLOBAL; 370 break; 371 case 'A': /* experimental. not in the spec */ 372 #ifdef NI_NODEADDR_FLAG_ANYCAST 373 naflags |= NI_NODEADDR_FLAG_ANYCAST; 374 break; 375 #else 376 errx(1, 377 "-a A is not supported on the platform"); 378 /*NOTREACHED*/ 379 #endif 380 default: 381 usage(); 382 /*NOTREACHED*/ 383 } 384 } 385 break; 386 } 387 case 'b': 388 #if defined(SO_SNDBUF) && defined(SO_RCVBUF) 389 sockbufsize = atoi(optarg); 390 #else 391 err(1, 392 "-b option ignored: SO_SNDBUF/SO_RCVBUF socket options not supported"); 393 #endif 394 break; 395 case 'c': 396 npackets = strtol(optarg, &e, 10); 397 if (npackets <= 0 || *optarg == '\0' || *e != '\0') 398 errx(1, 399 "illegal number of packets -- %s", optarg); 400 break; 401 case 'd': 402 options |= F_SO_DEBUG; 403 break; 404 case 'f': 405 if (getuid()) { 406 errno = EPERM; 407 errx(1, "Must be superuser to flood ping"); 408 } 409 options |= F_FLOOD; 410 setbuf(stdout, (char *)NULL); 411 break; 412 case 'H': 413 options |= F_HOSTNAME; 414 break; 415 case 'h': /* hoplimit */ 416 hoplimit = strtol(optarg, &e, 10); 417 if (255 < hoplimit || hoplimit < -1) 418 errx(1, 419 "illegal hoplimit -- %s", optarg); 420 break; 421 case 'I': 422 ifname = optarg; 423 options |= F_INTERFACE; 424 #ifndef USE_SIN6_SCOPE_ID 425 usepktinfo++; 426 #endif 427 break; 428 case 'i': /* wait between sending packets */ 429 intval = strtod(optarg, &e); 430 if (*optarg == '\0' || *e != '\0') 431 errx(1, "illegal timing interval %s", optarg); 432 if (intval < 1 && getuid()) { 433 errx(1, "%s: only root may use interval < 1s", 434 strerror(EPERM)); 435 } 436 interval.tv_sec = (long)intval; 437 interval.tv_usec = 438 (long)((intval - interval.tv_sec) * 1000000); 439 if (interval.tv_sec < 0) 440 errx(1, "illegal timing interval %s", optarg); 441 /* less than 1/hz does not make sense */ 442 if (interval.tv_sec == 0 && interval.tv_usec < 10000) { 443 warnx("too small interval, raised to 0.01"); 444 interval.tv_usec = 10000; 445 } 446 options |= F_INTERVAL; 447 break; 448 case 'l': 449 if (getuid()) { 450 errno = EPERM; 451 errx(1, "Must be superuser to preload"); 452 } 453 preload = strtol(optarg, &e, 10); 454 if (preload < 0 || *optarg == '\0' || *e != '\0') 455 errx(1, "illegal preload value -- %s", optarg); 456 break; 457 case 'm': 458 #ifdef IPV6_USE_MIN_MTU 459 options |= F_NOMINMTU; 460 break; 461 #else 462 errx(1, "-%c is not supported on this platform", ch); 463 /*NOTREACHED*/ 464 #endif 465 case 'n': 466 options &= ~F_HOSTNAME; 467 break; 468 case 'N': 469 options |= F_NIGROUP; 470 break; 471 case 'p': /* fill buffer with user pattern */ 472 options |= F_PINGFILLED; 473 fill((char *)datap, optarg); 474 break; 475 case 'q': 476 options |= F_QUIET; 477 break; 478 case 'R': 479 #ifdef IPV6_REACHCONF 480 options |= F_REACHCONF; 481 break; 482 #else 483 errx(1, "-R is not supported in this configuration"); 484 #endif 485 case 'S': 486 /* XXX: use getaddrinfo? */ 487 bzero(&hints, sizeof(struct addrinfo)); 488 hints.ai_flags = AI_NUMERICHOST; /* allow hostname? */ 489 hints.ai_family = AF_INET6; 490 hints.ai_socktype = SOCK_RAW; 491 hints.ai_protocol = IPPROTO_ICMPV6; 492 493 ret_ga = getaddrinfo(optarg, NULL, &hints, &res); 494 if (ret_ga) { 495 errx(1, "invalid source address: %s", 496 gai_strerror(ret_ga)); 497 } 498 /* 499 * res->ai_family must be AF_INET6 and res->ai_addrlen 500 * must be sizeof(src). 501 */ 502 memcpy(&src, res->ai_addr, res->ai_addrlen); 503 srclen = res->ai_addrlen; 504 freeaddrinfo(res); 505 options |= F_SRCADDR; 506 break; 507 case 's': /* size of packet to send */ 508 datalen = strtol(optarg, &e, 10); 509 if (datalen <= 0 || *optarg == '\0' || *e != '\0') 510 errx(1, "illegal datalen value -- %s", optarg); 511 if (datalen > MAXDATALEN) { 512 errx(1, 513 "datalen value too large, maximum is %d", 514 MAXDATALEN); 515 } 516 break; 517 case 't': 518 options &= ~F_NOUSERDATA; 519 options |= F_SUPTYPES; 520 break; 521 case 'v': 522 options |= F_VERBOSE; 523 break; 524 case 'w': 525 options &= ~F_NOUSERDATA; 526 options |= F_FQDN; 527 break; 528 case 'W': 529 options &= ~F_NOUSERDATA; 530 options |= F_FQDNOLD; 531 break; 532 #ifdef IPSEC 533 #ifdef IPSEC_POLICY_IPSEC 534 case 'P': 535 options |= F_POLICY; 536 if (!strncmp("in", optarg, 2)) { 537 if ((policy_in = strdup(optarg)) == NULL) 538 errx(1, "strdup"); 539 } else if (!strncmp("out", optarg, 3)) { 540 if ((policy_out = strdup(optarg)) == NULL) 541 errx(1, "strdup"); 542 } else 543 errx(1, "invalid security policy"); 544 break; 545 #else 546 case 'A': 547 options |= F_AUTHHDR; 548 break; 549 case 'E': 550 options |= F_ENCRYPT; 551 break; 552 #endif /*IPSEC_POLICY_IPSEC*/ 553 #endif /*IPSEC*/ 554 default: 555 usage(); 556 /*NOTREACHED*/ 557 } 558 } 559 argc -= optind; 560 argv += optind; 561 562 if (argc < 1) { 563 usage(); 564 /*NOTREACHED*/ 565 } 566 567 if (argc > 1) { 568 #ifdef IPV6_RECVRTHDR /* 2292bis */ 569 rthlen = CMSG_SPACE(inet6_rth_space(IPV6_RTHDR_TYPE_0, 570 argc - 1)); 571 #else /* RFC2292 */ 572 rthlen = inet6_rthdr_space(IPV6_RTHDR_TYPE_0, argc - 1); 573 #endif 574 if (rthlen == 0) { 575 errx(1, "too many intermediate hops"); 576 /*NOTREACHED*/ 577 } 578 ip6optlen += rthlen; 579 } 580 581 if (options & F_NIGROUP) { 582 target = nigroup(argv[argc - 1]); 583 if (target == NULL) { 584 usage(); 585 /*NOTREACHED*/ 586 } 587 } else 588 target = argv[argc - 1]; 589 590 /* getaddrinfo */ 591 bzero(&hints, sizeof(struct addrinfo)); 592 hints.ai_flags = AI_CANONNAME; 593 hints.ai_family = AF_INET6; 594 hints.ai_socktype = SOCK_RAW; 595 hints.ai_protocol = IPPROTO_ICMPV6; 596 597 ret_ga = getaddrinfo(target, NULL, &hints, &res); 598 if (ret_ga) 599 errx(1, "%s", gai_strerror(ret_ga)); 600 if (res->ai_canonname) 601 hostname = res->ai_canonname; 602 else 603 hostname = target; 604 605 if (!res->ai_addr) 606 errx(1, "getaddrinfo failed"); 607 608 (void)memcpy(&dst, res->ai_addr, res->ai_addrlen); 609 610 if ((s = socket(res->ai_family, res->ai_socktype, 611 res->ai_protocol)) < 0) 612 err(1, "socket"); 613 614 /* set the source address if specified. */ 615 if ((options & F_SRCADDR) && 616 bind(s, (struct sockaddr *)&src, srclen) != 0) { 617 err(1, "bind"); 618 } 619 620 /* 621 * let the kerel pass extension headers of incoming packets, 622 * for privileged socket options 623 */ 624 if ((options & F_VERBOSE) != 0) { 625 int opton = 1; 626 627 #ifdef IPV6_RECVHOPOPTS 628 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPOPTS, &opton, 629 sizeof(opton))) 630 err(1, "setsockopt(IPV6_RECVHOPOPTS)"); 631 #else /* old adv. API */ 632 if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPOPTS, &opton, 633 sizeof(opton))) 634 err(1, "setsockopt(IPV6_HOPOPTS)"); 635 #endif 636 #ifdef IPV6_RECVDSTOPTS 637 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVDSTOPTS, &opton, 638 sizeof(opton))) 639 err(1, "setsockopt(IPV6_RECVDSTOPTS)"); 640 #else /* old adv. API */ 641 if (setsockopt(s, IPPROTO_IPV6, IPV6_DSTOPTS, &opton, 642 sizeof(opton))) 643 err(1, "setsockopt(IPV6_DSTOPTS)"); 644 #endif 645 #ifdef IPV6_RECVRTHDRDSTOPTS 646 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDRDSTOPTS, &opton, 647 sizeof(opton))) 648 err(1, "setsockopt(IPV6_RECVRTHDRDSTOPTS)"); 649 #endif 650 } 651 652 /* revoke root privilege */ 653 seteuid(getuid()); 654 setuid(getuid()); 655 656 if (options & F_FLOOD && options & F_INTERVAL) 657 errx(1, "-f and -i incompatible options"); 658 659 if ((options & F_NOUSERDATA) == 0) { 660 if (datalen >= sizeof(struct timeval)) { 661 /* we can time transfer */ 662 timing = 1; 663 } else 664 timing = 0; 665 /* in F_VERBOSE case, we may get non-echoreply packets*/ 666 if (options & F_VERBOSE) 667 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA; 668 else 669 packlen = datalen + IP6LEN + ICMP6ECHOLEN + EXTRA; 670 } else { 671 /* suppress timing for node information query */ 672 timing = 0; 673 datalen = 2048; 674 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA; 675 } 676 677 if (!(packet = (u_char *)malloc((u_int)packlen))) 678 err(1, "Unable to allocate packet"); 679 if (!(options & F_PINGFILLED)) 680 for (i = ICMP6ECHOLEN; i < packlen; ++i) 681 *datap++ = i; 682 683 ident = getpid() & 0xFFFF; 684 #ifndef __OpenBSD__ 685 gettimeofday(&timeout, NULL); 686 srand((unsigned int)(timeout.tv_sec ^ timeout.tv_usec ^ (long)ident)); 687 memset(nonce, 0, sizeof(nonce)); 688 for (i = 0; i < sizeof(nonce); i += sizeof(int)) 689 *((int *)&nonce[i]) = rand(); 690 #else 691 memset(nonce, 0, sizeof(nonce)); 692 for (i = 0; i < sizeof(nonce); i += sizeof(u_int32_t)) 693 *((u_int32_t *)&nonce[i]) = arc4random(); 694 #endif 695 696 hold = 1; 697 698 if (options & F_SO_DEBUG) 699 (void)setsockopt(s, SOL_SOCKET, SO_DEBUG, (char *)&hold, 700 sizeof(hold)); 701 optval = IPV6_DEFHLIM; 702 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr)) 703 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, 704 &optval, sizeof(optval)) == -1) 705 err(1, "IPV6_MULTICAST_HOPS"); 706 #ifdef IPV6_USE_MIN_MTU 707 if ((options & F_NOMINMTU) == 0) { 708 optval = 1; 709 if (setsockopt(s, IPPROTO_IPV6, IPV6_USE_MIN_MTU, 710 &optval, sizeof(optval)) == -1) 711 err(1, "setsockopt(IPV6_USE_MIN_MTU)"); 712 } 713 #ifdef IPV6_RECVPATHMTU 714 else { 715 optval = 1; 716 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPATHMTU, 717 &optval, sizeof(optval)) == -1) 718 err(1, "setsockopt(IPV6_RECVPATHMTU)"); 719 } 720 #endif /* IPV6_RECVPATHMTU */ 721 #endif /* IPV6_USE_MIN_MTU */ 722 723 #ifdef IPSEC 724 #ifdef IPSEC_POLICY_IPSEC 725 if (options & F_POLICY) { 726 if (setpolicy(s, policy_in) < 0) 727 errx(1, "%s", ipsec_strerror()); 728 if (setpolicy(s, policy_out) < 0) 729 errx(1, "%s", ipsec_strerror()); 730 } 731 #else 732 if (options & F_AUTHHDR) { 733 optval = IPSEC_LEVEL_REQUIRE; 734 #ifdef IPV6_AUTH_TRANS_LEVEL 735 if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL, 736 &optval, sizeof(optval)) == -1) 737 err(1, "setsockopt(IPV6_AUTH_TRANS_LEVEL)"); 738 #else /* old def */ 739 if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_LEVEL, 740 &optval, sizeof(optval)) == -1) 741 err(1, "setsockopt(IPV6_AUTH_LEVEL)"); 742 #endif 743 } 744 if (options & F_ENCRYPT) { 745 optval = IPSEC_LEVEL_REQUIRE; 746 if (setsockopt(s, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL, 747 &optval, sizeof(optval)) == -1) 748 err(1, "setsockopt(IPV6_ESP_TRANS_LEVEL)"); 749 } 750 #endif /*IPSEC_POLICY_IPSEC*/ 751 #endif 752 753 #ifdef ICMP6_FILTER 754 { 755 struct icmp6_filter filt; 756 if (!(options & F_VERBOSE)) { 757 ICMP6_FILTER_SETBLOCKALL(&filt); 758 if ((options & F_FQDN) || (options & F_FQDNOLD) || 759 (options & F_NODEADDR) || (options & F_SUPTYPES)) 760 ICMP6_FILTER_SETPASS(ICMP6_NI_REPLY, &filt); 761 else 762 ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt); 763 } else { 764 ICMP6_FILTER_SETPASSALL(&filt); 765 } 766 if (setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, &filt, 767 sizeof(filt)) < 0) 768 err(1, "setsockopt(ICMP6_FILTER)"); 769 } 770 #endif /*ICMP6_FILTER*/ 771 772 /* let the kerel pass extension headers of incoming packets */ 773 if ((options & F_VERBOSE) != 0) { 774 int opton = 1; 775 776 #ifdef IPV6_RECVRTHDR 777 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDR, &opton, 778 sizeof(opton))) 779 err(1, "setsockopt(IPV6_RECVRTHDR)"); 780 #else /* old adv. API */ 781 if (setsockopt(s, IPPROTO_IPV6, IPV6_RTHDR, &opton, 782 sizeof(opton))) 783 err(1, "setsockopt(IPV6_RTHDR)"); 784 #endif 785 } 786 787 /* 788 optval = 1; 789 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr)) 790 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, 791 &optval, sizeof(optval)) == -1) 792 err(1, "IPV6_MULTICAST_LOOP"); 793 */ 794 795 /* Specify the outgoing interface and/or the source address */ 796 if (usepktinfo) 797 ip6optlen += CMSG_SPACE(sizeof(struct in6_pktinfo)); 798 799 if (hoplimit != -1) 800 ip6optlen += CMSG_SPACE(sizeof(int)); 801 802 #ifdef IPV6_REACHCONF 803 if (options & F_REACHCONF) 804 ip6optlen += CMSG_SPACE(0); 805 #endif 806 807 /* set IP6 packet options */ 808 if (ip6optlen) { 809 if ((scmsg = (char *)malloc(ip6optlen)) == 0) 810 errx(1, "can't allocate enough memory"); 811 smsghdr.msg_control = (caddr_t)scmsg; 812 smsghdr.msg_controllen = ip6optlen; 813 scmsgp = (struct cmsghdr *)scmsg; 814 } 815 if (usepktinfo) { 816 pktinfo = (struct in6_pktinfo *)(CMSG_DATA(scmsgp)); 817 memset(pktinfo, 0, sizeof(*pktinfo)); 818 scmsgp->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); 819 scmsgp->cmsg_level = IPPROTO_IPV6; 820 scmsgp->cmsg_type = IPV6_PKTINFO; 821 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp); 822 } 823 824 /* set the outgoing interface */ 825 if (ifname) { 826 #ifndef USE_SIN6_SCOPE_ID 827 /* pktinfo must have already been allocated */ 828 if ((pktinfo->ipi6_ifindex = if_nametoindex(ifname)) == 0) 829 errx(1, "%s: invalid interface name", ifname); 830 #else 831 if ((dst.sin6_scope_id = if_nametoindex(ifname)) == 0) 832 errx(1, "%s: invalid interface name", ifname); 833 #endif 834 } 835 if (hoplimit != -1) { 836 scmsgp->cmsg_len = CMSG_LEN(sizeof(int)); 837 scmsgp->cmsg_level = IPPROTO_IPV6; 838 scmsgp->cmsg_type = IPV6_HOPLIMIT; 839 *(int *)(CMSG_DATA(scmsgp)) = hoplimit; 840 841 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp); 842 } 843 #ifdef IPV6_REACHCONF 844 if (options & F_REACHCONF) { 845 scmsgp->cmsg_len = CMSG_LEN(0); 846 scmsgp->cmsg_level = IPPROTO_IPV6; 847 scmsgp->cmsg_type = IPV6_REACHCONF; 848 849 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp); 850 } 851 #endif 852 853 if (argc > 1) { /* some intermediate addrs are specified */ 854 int hops, error; 855 #ifdef USE_RFC2292BIS 856 int rthdrlen; 857 #endif 858 859 #ifdef USE_RFC2292BIS 860 rthdrlen = inet6_rth_space(IPV6_RTHDR_TYPE_0, argc - 1); 861 scmsgp->cmsg_len = CMSG_LEN(rthdrlen); 862 scmsgp->cmsg_level = IPPROTO_IPV6; 863 scmsgp->cmsg_type = IPV6_RTHDR; 864 rthdr = (struct ip6_rthdr *)CMSG_DATA(scmsgp); 865 rthdr = inet6_rth_init((void *)rthdr, rthdrlen, 866 IPV6_RTHDR_TYPE_0, argc - 1); 867 if (rthdr == NULL) 868 errx(1, "can't initialize rthdr"); 869 #else /* old advanced API */ 870 if ((scmsgp = (struct cmsghdr *)inet6_rthdr_init(scmsgp, 871 IPV6_RTHDR_TYPE_0)) == 0) 872 errx(1, "can't initialize rthdr"); 873 #endif /* USE_RFC2292BIS */ 874 875 for (hops = 0; hops < argc - 1; hops++) { 876 struct addrinfo *iaip; 877 878 if ((error = getaddrinfo(argv[hops], NULL, &hints, 879 &iaip))) 880 errx(1, "%s", gai_strerror(error)); 881 if (SIN6(iaip->ai_addr)->sin6_family != AF_INET6) 882 errx(1, 883 "bad addr family of an intermediate addr"); 884 885 #ifdef USE_RFC2292BIS 886 if (inet6_rth_add(rthdr, 887 &(SIN6(iaip->ai_addr))->sin6_addr)) 888 errx(1, "can't add an intermediate node"); 889 #else /* old advanced API */ 890 if (inet6_rthdr_add(scmsgp, 891 &(SIN6(iaip->ai_addr))->sin6_addr, 892 IPV6_RTHDR_LOOSE)) 893 errx(1, "can't add an intermediate node"); 894 #endif /* USE_RFC2292BIS */ 895 freeaddrinfo(iaip); 896 } 897 898 #ifndef USE_RFC2292BIS 899 if (inet6_rthdr_lasthop(scmsgp, IPV6_RTHDR_LOOSE)) 900 errx(1, "can't set the last flag"); 901 #endif 902 903 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp); 904 } 905 906 if (!(options & F_SRCADDR)) { 907 /* 908 * get the source address. XXX since we revoked the root 909 * privilege, we cannot use a raw socket for this. 910 */ 911 int dummy, len = sizeof(src); 912 913 if ((dummy = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 914 err(1, "UDP socket"); 915 916 src.sin6_family = AF_INET6; 917 src.sin6_addr = dst.sin6_addr; 918 src.sin6_port = ntohs(DUMMY_PORT); 919 src.sin6_scope_id = dst.sin6_scope_id; 920 921 #ifdef USE_RFC2292BIS 922 if (pktinfo && 923 setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTINFO, 924 (void *)pktinfo, sizeof(*pktinfo))) 925 err(1, "UDP setsockopt(IPV6_PKTINFO)"); 926 927 if (hoplimit != -1 && 928 setsockopt(dummy, IPPROTO_IPV6, IPV6_HOPLIMIT, 929 (void *)&hoplimit, sizeof(hoplimit))) 930 err(1, "UDP setsockopt(IPV6_HOPLIMIT)"); 931 932 if (rthdr && 933 setsockopt(dummy, IPPROTO_IPV6, IPV6_RTHDR, 934 (void *)rthdr, (rthdr->ip6r_len + 1) << 3)) 935 err(1, "UDP setsockopt(IPV6_RTHDR)"); 936 #else /* old advanced API */ 937 if (smsghdr.msg_control && 938 setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTOPTIONS, 939 (void *)smsghdr.msg_control, smsghdr.msg_controllen)) 940 err(1, "UDP setsockopt(IPV6_PKTOPTIONS)"); 941 #endif 942 943 if (connect(dummy, (struct sockaddr *)&src, len) < 0) 944 err(1, "UDP connect"); 945 946 if (getsockname(dummy, (struct sockaddr *)&src, &len) < 0) 947 err(1, "getsockname"); 948 949 close(dummy); 950 } 951 952 #if defined(SO_SNDBUF) && defined(SO_RCVBUF) 953 if (sockbufsize) { 954 if (datalen > sockbufsize) 955 warnx("you need -b to increase socket buffer size"); 956 if (setsockopt(s, SOL_SOCKET, SO_SNDBUF, &sockbufsize, 957 sizeof(sockbufsize)) < 0) 958 err(1, "setsockopt(SO_SNDBUF)"); 959 if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, &sockbufsize, 960 sizeof(sockbufsize)) < 0) 961 err(1, "setsockopt(SO_RCVBUF)"); 962 } 963 else { 964 if (datalen > 8 * 1024) /*XXX*/ 965 warnx("you need -b to increase socket buffer size"); 966 /* 967 * When pinging the broadcast address, you can get a lot of 968 * answers. Doing something so evil is useful if you are trying 969 * to stress the ethernet, or just want to fill the arp cache 970 * to get some stuff for /etc/ethers. 971 */ 972 hold = 48 * 1024; 973 setsockopt(s, SOL_SOCKET, SO_RCVBUF, (char *)&hold, 974 sizeof(hold)); 975 } 976 #endif 977 978 optval = 1; 979 #ifndef USE_SIN6_SCOPE_ID 980 #ifdef IPV6_RECVPKTINFO 981 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPKTINFO, &optval, 982 sizeof(optval)) < 0) 983 warn("setsockopt(IPV6_RECVPKTINFO)"); /* XXX err? */ 984 #else /* old adv. API */ 985 if (setsockopt(s, IPPROTO_IPV6, IPV6_PKTINFO, &optval, 986 sizeof(optval)) < 0) 987 warn("setsockopt(IPV6_PKTINFO)"); /* XXX err? */ 988 #endif 989 #endif /* USE_SIN6_SCOPE_ID */ 990 #ifdef IPV6_RECVHOPLIMIT 991 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, &optval, 992 sizeof(optval)) < 0) 993 warn("setsockopt(IPV6_RECVHOPLIMIT)"); /* XXX err? */ 994 #else /* old adv. API */ 995 if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPLIMIT, &optval, 996 sizeof(optval)) < 0) 997 warn("setsockopt(IPV6_HOPLIMIT)"); /* XXX err? */ 998 #endif 999 1000 printf("PING6(%lu=40+8+%lu bytes) ", (unsigned long)(40 + pingerlen()), 1001 (unsigned long)(pingerlen() - 8)); 1002 printf("%s --> ", pr_addr((struct sockaddr *)&src, sizeof(src))); 1003 printf("%s\n", pr_addr((struct sockaddr *)&dst, sizeof(dst))); 1004 1005 while (preload--) /* Fire off them quickies. */ 1006 (void)pinger(); 1007 1008 (void)signal(SIGINT, onsignal); 1009 #ifdef SIGINFO 1010 (void)signal(SIGINFO, onsignal); 1011 #endif 1012 1013 if ((options & F_FLOOD) == 0) { 1014 (void)signal(SIGALRM, onsignal); 1015 itimer.it_interval = interval; 1016 itimer.it_value = interval; 1017 (void)setitimer(ITIMER_REAL, &itimer, NULL); 1018 retransmit(); 1019 } 1020 1021 fdmasks = howmany(s + 1, NFDBITS) * sizeof(fd_mask); 1022 if ((fdmaskp = malloc(fdmasks)) == NULL) 1023 err(1, "malloc"); 1024 1025 signo = seenalrm = seenint = 0; 1026 #ifdef SIGINFO 1027 seeninfo = 0; 1028 #endif 1029 1030 for (;;) { 1031 struct msghdr m; 1032 struct cmsghdr *cm; 1033 u_char buf[1024]; 1034 struct iovec iov[2]; 1035 1036 /* signal handling */ 1037 if (seenalrm) { 1038 retransmit(); 1039 seenalrm = 0; 1040 continue; 1041 } 1042 if (seenint) { 1043 onint(SIGINT); 1044 seenint = 0; 1045 continue; 1046 } 1047 #ifdef SIGINFO 1048 if (seeninfo) { 1049 summary(); 1050 seeninfo = 0; 1051 continue; 1052 } 1053 #endif 1054 1055 if (options & F_FLOOD) { 1056 (void)pinger(); 1057 timeout.tv_sec = 0; 1058 timeout.tv_usec = 10000; 1059 tv = &timeout; 1060 } else 1061 tv = NULL; 1062 memset(fdmaskp, 0, fdmasks); 1063 FD_SET(s, fdmaskp); 1064 cc = select(s + 1, fdmaskp, NULL, NULL, tv); 1065 if (cc < 0) { 1066 if (errno != EINTR) { 1067 warn("select"); 1068 sleep(1); 1069 } 1070 continue; 1071 } else if (cc == 0) 1072 continue; 1073 1074 fromlen = sizeof(from); 1075 m.msg_name = (caddr_t)&from; 1076 m.msg_namelen = sizeof(from); 1077 memset(&iov, 0, sizeof(iov)); 1078 iov[0].iov_base = (caddr_t)packet; 1079 iov[0].iov_len = packlen; 1080 m.msg_iov = iov; 1081 m.msg_iovlen = 1; 1082 cm = (struct cmsghdr *)buf; 1083 m.msg_control = (caddr_t)buf; 1084 m.msg_controllen = sizeof(buf); 1085 1086 cc = recvmsg(s, &m, 0); 1087 if (cc < 0) { 1088 if (errno != EINTR) { 1089 warn("recvmsg"); 1090 sleep(1); 1091 } 1092 continue; 1093 } else if (cc == 0) { 1094 int mtu; 1095 1096 /* 1097 * receive control messages only. Process the 1098 * exceptions (currently the only possiblity is 1099 * a path MTU notification.) 1100 */ 1101 if ((mtu = get_pathmtu(&m)) > 0) { 1102 if ((options & F_VERBOSE) != 0) { 1103 printf("new path MTU (%d) is " 1104 "notified\n", mtu); 1105 } 1106 } 1107 continue; 1108 } else { 1109 /* 1110 * an ICMPv6 message (probably an echoreply) arrived. 1111 */ 1112 pr_pack(packet, cc, &m); 1113 } 1114 if (npackets && nreceived >= npackets) 1115 break; 1116 } 1117 summary(); 1118 exit(nreceived == 0); 1119 } 1120 1121 void 1122 onsignal(sig) 1123 int sig; 1124 { 1125 signo = sig; 1126 switch (sig) { 1127 case SIGALRM: 1128 seenalrm++; 1129 break; 1130 case SIGINT: 1131 seenint++; 1132 break; 1133 #ifdef SIGINFO 1134 case SIGINFO: 1135 seeninfo++; 1136 break; 1137 #endif 1138 } 1139 } 1140 1141 /* 1142 * retransmit -- 1143 * This routine transmits another ping6. 1144 */ 1145 void 1146 retransmit() 1147 { 1148 struct itimerval itimer; 1149 1150 if (pinger() == 0) 1151 return; 1152 1153 /* 1154 * If we're not transmitting any more packets, change the timer 1155 * to wait two round-trip times if we've received any packets or 1156 * ten seconds if we haven't. 1157 */ 1158 #define MAXWAIT 10 1159 if (nreceived) { 1160 itimer.it_value.tv_sec = 2 * tmax / 1000; 1161 if (itimer.it_value.tv_sec == 0) 1162 itimer.it_value.tv_sec = 1; 1163 } else 1164 itimer.it_value.tv_sec = MAXWAIT; 1165 itimer.it_interval.tv_sec = 0; 1166 itimer.it_interval.tv_usec = 0; 1167 itimer.it_value.tv_usec = 0; 1168 1169 (void)signal(SIGALRM, onint); 1170 (void)setitimer(ITIMER_REAL, &itimer, NULL); 1171 } 1172 1173 /* 1174 * pinger -- 1175 * Compose and transmit an ICMP ECHO REQUEST packet. The IP packet 1176 * will be added on by the kernel. The ID field is our UNIX process ID, 1177 * and the sequence number is an ascending integer. The first 8 bytes 1178 * of the data portion are used to hold a UNIX "timeval" struct in VAX 1179 * byte-order, to compute the round-trip time. 1180 */ 1181 size_t 1182 pingerlen() 1183 { 1184 size_t l; 1185 1186 if (options & F_FQDN) 1187 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr); 1188 else if (options & F_FQDNOLD) 1189 l = ICMP6_NIQLEN; 1190 else if (options & F_NODEADDR) 1191 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr); 1192 else if (options & F_SUPTYPES) 1193 l = ICMP6_NIQLEN; 1194 else 1195 l = ICMP6ECHOLEN + datalen; 1196 1197 return l; 1198 } 1199 1200 int 1201 pinger() 1202 { 1203 struct icmp6_hdr *icp; 1204 struct iovec iov[2]; 1205 int i, cc; 1206 struct icmp6_nodeinfo *nip; 1207 int seq; 1208 1209 if (npackets && ntransmitted >= npackets) 1210 return(-1); /* no more transmission */ 1211 1212 icp = (struct icmp6_hdr *)outpack; 1213 nip = (struct icmp6_nodeinfo *)outpack; 1214 memset(icp, 0, sizeof(*icp)); 1215 icp->icmp6_cksum = 0; 1216 seq = ntransmitted++; 1217 CLR(seq % mx_dup_ck); 1218 1219 if (options & F_FQDN) { 1220 icp->icmp6_type = ICMP6_NI_QUERY; 1221 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6; 1222 nip->ni_qtype = htons(NI_QTYPE_FQDN); 1223 nip->ni_flags = htons(0); 1224 1225 memcpy(nip->icmp6_ni_nonce, nonce, 1226 sizeof(nip->icmp6_ni_nonce)); 1227 *(u_int16_t *)nip->icmp6_ni_nonce = htons(seq); 1228 1229 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr, 1230 sizeof(dst.sin6_addr)); 1231 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr); 1232 datalen = 0; 1233 } else if (options & F_FQDNOLD) { 1234 /* packet format in 03 draft - no Subject data on queries */ 1235 icp->icmp6_type = ICMP6_NI_QUERY; 1236 icp->icmp6_code = 0; /* code field is always 0 */ 1237 nip->ni_qtype = htons(NI_QTYPE_FQDN); 1238 nip->ni_flags = htons(0); 1239 1240 memcpy(nip->icmp6_ni_nonce, nonce, 1241 sizeof(nip->icmp6_ni_nonce)); 1242 *(u_int16_t *)nip->icmp6_ni_nonce = htons(seq); 1243 1244 cc = ICMP6_NIQLEN; 1245 datalen = 0; 1246 } else if (options & F_NODEADDR) { 1247 icp->icmp6_type = ICMP6_NI_QUERY; 1248 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6; 1249 nip->ni_qtype = htons(NI_QTYPE_NODEADDR); 1250 nip->ni_flags = naflags; 1251 1252 memcpy(nip->icmp6_ni_nonce, nonce, 1253 sizeof(nip->icmp6_ni_nonce)); 1254 *(u_int16_t *)nip->icmp6_ni_nonce = htons(seq); 1255 1256 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr, 1257 sizeof(dst.sin6_addr)); 1258 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr); 1259 datalen = 0; 1260 } else if (options & F_SUPTYPES) { 1261 icp->icmp6_type = ICMP6_NI_QUERY; 1262 icp->icmp6_code = ICMP6_NI_SUBJ_FQDN; /*empty*/ 1263 nip->ni_qtype = htons(NI_QTYPE_SUPTYPES); 1264 /* we support compressed bitmap */ 1265 nip->ni_flags = NI_SUPTYPE_FLAG_COMPRESS; 1266 1267 memcpy(nip->icmp6_ni_nonce, nonce, 1268 sizeof(nip->icmp6_ni_nonce)); 1269 *(u_int16_t *)nip->icmp6_ni_nonce = htons(seq); 1270 cc = ICMP6_NIQLEN; 1271 datalen = 0; 1272 } else { 1273 icp->icmp6_type = ICMP6_ECHO_REQUEST; 1274 icp->icmp6_code = 0; 1275 icp->icmp6_id = htons(ident); 1276 icp->icmp6_seq = htons(seq); 1277 if (timing) 1278 (void)gettimeofday((struct timeval *) 1279 &outpack[ICMP6ECHOLEN], NULL); 1280 cc = ICMP6ECHOLEN + datalen; 1281 } 1282 1283 #ifdef DIAGNOSTIC 1284 if (pingerlen() != cc) 1285 errx(1, "internal error; length mismatch"); 1286 #endif 1287 1288 smsghdr.msg_name = (caddr_t)&dst; 1289 smsghdr.msg_namelen = sizeof(dst); 1290 memset(&iov, 0, sizeof(iov)); 1291 iov[0].iov_base = (caddr_t)outpack; 1292 iov[0].iov_len = cc; 1293 smsghdr.msg_iov = iov; 1294 smsghdr.msg_iovlen = 1; 1295 1296 i = sendmsg(s, &smsghdr, 0); 1297 1298 if (i < 0 || i != cc) { 1299 if (i < 0) 1300 warn("sendmsg"); 1301 (void)printf("ping6: wrote %s %d chars, ret=%d\n", 1302 hostname, cc, i); 1303 } 1304 if (!(options & F_QUIET) && options & F_FLOOD) 1305 (void)write(STDOUT_FILENO, &DOT, 1); 1306 1307 return(0); 1308 } 1309 1310 int 1311 myechoreply(icp) 1312 const struct icmp6_hdr *icp; 1313 { 1314 if (ntohs(icp->icmp6_id) == ident) 1315 return 1; 1316 else 1317 return 0; 1318 } 1319 1320 int 1321 mynireply(nip) 1322 const struct icmp6_nodeinfo *nip; 1323 { 1324 if (memcmp(nip->icmp6_ni_nonce + sizeof(u_int16_t), 1325 nonce + sizeof(u_int16_t), 1326 sizeof(nonce) - sizeof(u_int16_t)) == 0) 1327 return 1; 1328 else 1329 return 0; 1330 } 1331 1332 char * 1333 dnsdecode(sp, ep, base, buf, bufsiz) 1334 const u_char **sp; 1335 const u_char *ep; 1336 const u_char *base; /*base for compressed name*/ 1337 u_char *buf; 1338 size_t bufsiz; 1339 { 1340 int i; 1341 const u_char *cp; 1342 char cresult[MAXDNAME + 1]; 1343 const u_char *comp; 1344 int l; 1345 1346 cp = *sp; 1347 *buf = '\0'; 1348 1349 if (cp >= ep) 1350 return NULL; 1351 while (cp < ep) { 1352 i = *cp; 1353 if (i == 0 || cp != *sp) { 1354 if (strlcat(buf, ".", bufsiz) >= bufsiz) 1355 return NULL; /*result overrun*/ 1356 } 1357 if (i == 0) 1358 break; 1359 cp++; 1360 1361 if ((i & 0xc0) == 0xc0 && cp - base > (i & 0x3f)) { 1362 /* DNS compression */ 1363 if (!base) 1364 return NULL; 1365 1366 comp = base + (i & 0x3f); 1367 if (dnsdecode(&comp, cp, base, cresult, 1368 sizeof(cresult)) == NULL) 1369 return NULL; 1370 if (strlcat(buf, cresult, bufsiz) >= bufsiz) 1371 return NULL; /*result overrun*/ 1372 break; 1373 } else if ((i & 0x3f) == i) { 1374 if (i > ep - cp) 1375 return NULL; /*source overrun*/ 1376 while (i-- > 0 && cp < ep) { 1377 l = snprintf(cresult, sizeof(cresult), 1378 isprint(*cp) ? "%c" : "\\%03o", *cp & 0xff); 1379 if (l >= sizeof(cresult) || l < 0) 1380 return NULL; 1381 if (strlcat(buf, cresult, bufsiz) >= bufsiz) 1382 return NULL; /*result overrun*/ 1383 cp++; 1384 } 1385 } else 1386 return NULL; /*invalid label*/ 1387 } 1388 if (i != 0) 1389 return NULL; /*not terminated*/ 1390 cp++; 1391 *sp = cp; 1392 return buf; 1393 } 1394 1395 /* 1396 * pr_pack -- 1397 * Print out the packet, if it came from us. This logic is necessary 1398 * because ALL readers of the ICMP socket get a copy of ALL ICMP packets 1399 * which arrive ('tis only fair). This permits multiple copies of this 1400 * program to be run without having intermingled output (or statistics!). 1401 */ 1402 void 1403 pr_pack(buf, cc, mhdr) 1404 u_char *buf; 1405 int cc; 1406 struct msghdr *mhdr; 1407 { 1408 #define safeputc(c) printf((isprint((c)) ? "%c" : "\\%03o"), c) 1409 struct icmp6_hdr *icp; 1410 struct icmp6_nodeinfo *ni; 1411 int i; 1412 int hoplim; 1413 struct sockaddr *from; 1414 int fromlen; 1415 u_char *cp = NULL, *dp, *end = buf + cc; 1416 struct in6_pktinfo *pktinfo = NULL; 1417 struct timeval tv, *tp; 1418 double triptime = 0; 1419 int dupflag; 1420 size_t off; 1421 int oldfqdn; 1422 u_int16_t seq; 1423 char dnsname[MAXDNAME + 1]; 1424 1425 (void)gettimeofday(&tv, NULL); 1426 1427 if (!mhdr || !mhdr->msg_name || 1428 mhdr->msg_namelen != sizeof(struct sockaddr_in6) || 1429 ((struct sockaddr *)mhdr->msg_name)->sa_family != AF_INET6) { 1430 if (options & F_VERBOSE) 1431 warnx("invalid peername\n"); 1432 return; 1433 } 1434 from = (struct sockaddr *)mhdr->msg_name; 1435 fromlen = mhdr->msg_namelen; 1436 if (cc < sizeof(struct icmp6_hdr)) { 1437 if (options & F_VERBOSE) 1438 warnx("packet too short (%d bytes) from %s\n", cc, 1439 pr_addr(from, fromlen)); 1440 return; 1441 } 1442 icp = (struct icmp6_hdr *)buf; 1443 ni = (struct icmp6_nodeinfo *)buf; 1444 off = 0; 1445 1446 if ((hoplim = get_hoplim(mhdr)) == -1) { 1447 warnx("failed to get receiving hop limit"); 1448 return; 1449 } 1450 if ((pktinfo = get_rcvpktinfo(mhdr)) == NULL) { 1451 warnx("failed to get receiving pakcet information"); 1452 return; 1453 } 1454 1455 if (icp->icmp6_type == ICMP6_ECHO_REPLY && myechoreply(icp)) { 1456 seq = ntohs(icp->icmp6_seq); 1457 ++nreceived; 1458 if (timing) { 1459 tp = (struct timeval *)(icp + 1); 1460 tvsub(&tv, tp); 1461 triptime = ((double)tv.tv_sec) * 1000.0 + 1462 ((double)tv.tv_usec) / 1000.0; 1463 tsum += triptime; 1464 #if defined(__OpenBSD__) || defined(__NetBSD__) 1465 tsumsq += triptime * triptime; 1466 #endif 1467 if (triptime < tmin) 1468 tmin = triptime; 1469 if (triptime > tmax) 1470 tmax = triptime; 1471 } 1472 1473 if (TST(seq % mx_dup_ck)) { 1474 ++nrepeats; 1475 --nreceived; 1476 dupflag = 1; 1477 } else { 1478 SET(seq % mx_dup_ck); 1479 dupflag = 0; 1480 } 1481 1482 if (options & F_QUIET) 1483 return; 1484 1485 if (options & F_FLOOD) 1486 (void)write(STDOUT_FILENO, &BSPACE, 1); 1487 else { 1488 (void)printf("%d bytes from %s, icmp_seq=%u", cc, 1489 pr_addr(from, fromlen), seq); 1490 (void)printf(" hlim=%d", hoplim); 1491 if ((options & F_VERBOSE) != 0) { 1492 struct sockaddr_in6 dstsa; 1493 1494 memset(&dstsa, 0, sizeof(dstsa)); 1495 dstsa.sin6_family = AF_INET6; 1496 #ifdef SIN6_LEN 1497 dstsa.sin6_len = sizeof(dstsa); 1498 #endif 1499 dstsa.sin6_scope_id = pktinfo->ipi6_ifindex; 1500 dstsa.sin6_addr = pktinfo->ipi6_addr; 1501 (void)printf(" dst=%s", 1502 pr_addr((struct sockaddr *)&dstsa, 1503 sizeof(dstsa))); 1504 } 1505 if (timing) 1506 (void)printf(" time=%g ms", triptime); 1507 if (dupflag) 1508 (void)printf("(DUP!)"); 1509 /* check the data */ 1510 cp = buf + off + ICMP6ECHOLEN + ICMP6ECHOTMLEN; 1511 dp = outpack + ICMP6ECHOLEN + ICMP6ECHOTMLEN; 1512 for (i = 8; cp < end; ++i, ++cp, ++dp) { 1513 if (*cp != *dp) { 1514 (void)printf("\nwrong data byte #%d should be 0x%x but was 0x%x", i, *dp, *cp); 1515 break; 1516 } 1517 } 1518 } 1519 } else if (icp->icmp6_type == ICMP6_NI_REPLY && mynireply(ni)) { 1520 seq = ntohs(*(u_int16_t *)ni->icmp6_ni_nonce); 1521 ++nreceived; 1522 if (TST(seq % mx_dup_ck)) { 1523 ++nrepeats; 1524 --nreceived; 1525 dupflag = 1; 1526 } else { 1527 SET(seq % mx_dup_ck); 1528 dupflag = 0; 1529 } 1530 1531 if (options & F_QUIET) 1532 return; 1533 1534 (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen)); 1535 1536 switch (ntohs(ni->ni_code)) { 1537 case ICMP6_NI_SUCCESS: 1538 break; 1539 case ICMP6_NI_REFUSED: 1540 printf("refused, type 0x%x", ntohs(ni->ni_type)); 1541 goto fqdnend; 1542 case ICMP6_NI_UNKNOWN: 1543 printf("unknown, type 0x%x", ntohs(ni->ni_type)); 1544 goto fqdnend; 1545 default: 1546 printf("unknown code 0x%x, type 0x%x", 1547 ntohs(ni->ni_code), ntohs(ni->ni_type)); 1548 goto fqdnend; 1549 } 1550 1551 switch (ntohs(ni->ni_qtype)) { 1552 case NI_QTYPE_NOOP: 1553 printf("NodeInfo NOOP"); 1554 break; 1555 case NI_QTYPE_SUPTYPES: 1556 pr_suptypes(ni, end - (u_char *)ni); 1557 break; 1558 case NI_QTYPE_NODEADDR: 1559 pr_nodeaddr(ni, end - (u_char *)ni); 1560 break; 1561 case NI_QTYPE_FQDN: 1562 default: /* XXX: for backward compatibility */ 1563 cp = (u_char *)ni + ICMP6_NIRLEN; 1564 if (buf[off + ICMP6_NIRLEN] == 1565 cc - off - ICMP6_NIRLEN - 1) 1566 oldfqdn = 1; 1567 else 1568 oldfqdn = 0; 1569 if (oldfqdn) { 1570 cp++; /* skip length */ 1571 while (cp < end) { 1572 safeputc(*cp & 0xff); 1573 cp++; 1574 } 1575 } else { 1576 i = 0; 1577 while (cp < end) { 1578 if (dnsdecode((const u_char **)&cp, end, 1579 (const u_char *)(ni + 1), dnsname, 1580 sizeof(dnsname)) == NULL) { 1581 printf("???"); 1582 break; 1583 } 1584 /* 1585 * name-lookup special handling for 1586 * truncated name 1587 */ 1588 if (cp + 1 <= end && !*cp && 1589 strlen(dnsname) > 0) { 1590 dnsname[strlen(dnsname) - 1] = '\0'; 1591 cp++; 1592 } 1593 printf("%s%s", i > 0 ? "," : "", 1594 dnsname); 1595 } 1596 } 1597 if (options & F_VERBOSE) { 1598 int32_t ttl; 1599 int comma = 0; 1600 1601 (void)printf(" ("); /*)*/ 1602 1603 switch (ni->ni_code) { 1604 case ICMP6_NI_REFUSED: 1605 (void)printf("refused"); 1606 comma++; 1607 break; 1608 case ICMP6_NI_UNKNOWN: 1609 (void)printf("unknwon qtype"); 1610 comma++; 1611 break; 1612 } 1613 1614 if ((end - (u_char *)ni) < ICMP6_NIRLEN) { 1615 /* case of refusion, unknown */ 1616 /*(*/ 1617 putchar(')'); 1618 goto fqdnend; 1619 } 1620 ttl = (int32_t)ntohl(*(u_long *)&buf[off+ICMP6ECHOLEN+8]); 1621 if (comma) 1622 printf(","); 1623 if (!(ni->ni_flags & NI_FQDN_FLAG_VALIDTTL)) { 1624 (void)printf("TTL=%d:meaningless", 1625 (int)ttl); 1626 } else { 1627 if (ttl < 0) { 1628 (void)printf("TTL=%d:invalid", 1629 ttl); 1630 } else 1631 (void)printf("TTL=%d", ttl); 1632 } 1633 comma++; 1634 1635 if (oldfqdn) { 1636 if (comma) 1637 printf(","); 1638 printf("03 draft"); 1639 comma++; 1640 } else { 1641 cp = (u_char *)ni + ICMP6_NIRLEN; 1642 if (cp == end) { 1643 if (comma) 1644 printf(","); 1645 printf("no name"); 1646 comma++; 1647 } 1648 } 1649 1650 if (buf[off + ICMP6_NIRLEN] != 1651 cc - off - ICMP6_NIRLEN - 1 && oldfqdn) { 1652 if (comma) 1653 printf(","); 1654 (void)printf("invalid namelen:%d/%lu", 1655 buf[off + ICMP6_NIRLEN], 1656 (u_long)cc - off - ICMP6_NIRLEN - 1); 1657 comma++; 1658 } 1659 /*(*/ 1660 putchar(')'); 1661 } 1662 fqdnend: 1663 ; 1664 } 1665 } else { 1666 /* We've got something other than an ECHOREPLY */ 1667 if (!(options & F_VERBOSE)) 1668 return; 1669 (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen)); 1670 pr_icmph(icp, end); 1671 } 1672 1673 if (!(options & F_FLOOD)) { 1674 (void)putchar('\n'); 1675 if (options & F_VERBOSE) 1676 pr_exthdrs(mhdr); 1677 (void)fflush(stdout); 1678 } 1679 #undef safeputc 1680 } 1681 1682 void 1683 pr_exthdrs(mhdr) 1684 struct msghdr *mhdr; 1685 { 1686 struct cmsghdr *cm; 1687 1688 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm; 1689 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) { 1690 if (cm->cmsg_level != IPPROTO_IPV6) 1691 continue; 1692 1693 switch (cm->cmsg_type) { 1694 case IPV6_HOPOPTS: 1695 printf(" HbH Options: "); 1696 pr_ip6opt(CMSG_DATA(cm)); 1697 break; 1698 case IPV6_DSTOPTS: 1699 #ifdef IPV6_RTHDRDSTOPTS 1700 case IPV6_RTHDRDSTOPTS: 1701 #endif 1702 printf(" Dst Options: "); 1703 pr_ip6opt(CMSG_DATA(cm)); 1704 break; 1705 case IPV6_RTHDR: 1706 printf(" Routing: "); 1707 pr_rthdr(CMSG_DATA(cm)); 1708 break; 1709 } 1710 } 1711 } 1712 1713 #ifdef USE_RFC2292BIS 1714 void 1715 pr_ip6opt(void *extbuf) 1716 { 1717 struct ip6_hbh *ext; 1718 int currentlen; 1719 u_int8_t type; 1720 size_t extlen, len; 1721 void *databuf; 1722 size_t offset; 1723 u_int16_t value2; 1724 u_int32_t value4; 1725 1726 ext = (struct ip6_hbh *)extbuf; 1727 extlen = (ext->ip6h_len + 1) * 8; 1728 printf("nxt %u, len %u (%lu bytes)\n", ext->ip6h_nxt, 1729 (unsigned int)ext->ip6h_len, (unsigned long)extlen); 1730 1731 currentlen = 0; 1732 while (1) { 1733 currentlen = inet6_opt_next(extbuf, extlen, currentlen, 1734 &type, &len, &databuf); 1735 if (currentlen == -1) 1736 break; 1737 switch (type) { 1738 /* 1739 * Note that inet6_opt_next automatically skips any padding 1740 * optins. 1741 */ 1742 case IP6OPT_JUMBO: 1743 offset = 0; 1744 offset = inet6_opt_get_val(databuf, offset, 1745 &value4, sizeof(value4)); 1746 printf(" Jumbo Payload Opt: Length %u\n", 1747 (u_int32_t)ntohl(value4)); 1748 break; 1749 case IP6OPT_ROUTER_ALERT: 1750 offset = 0; 1751 offset = inet6_opt_get_val(databuf, offset, 1752 &value2, sizeof(value2)); 1753 printf(" Router Alert Opt: Type %u\n", 1754 ntohs(value2)); 1755 break; 1756 default: 1757 printf(" Received Opt %u len %lu\n", 1758 type, (unsigned long)len); 1759 break; 1760 } 1761 } 1762 return; 1763 } 1764 #else /* !USE_RFC2292BIS */ 1765 /* ARGSUSED */ 1766 void 1767 pr_ip6opt(void *extbuf) 1768 { 1769 putchar('\n'); 1770 return; 1771 } 1772 #endif /* USE_RFC2292BIS */ 1773 1774 #ifdef USE_RFC2292BIS 1775 void 1776 pr_rthdr(void *extbuf) 1777 { 1778 struct in6_addr *in6; 1779 char ntopbuf[INET6_ADDRSTRLEN]; 1780 struct ip6_rthdr *rh = (struct ip6_rthdr *)extbuf; 1781 int i, segments; 1782 1783 /* print fixed part of the header */ 1784 printf("nxt %u, len %u (%d bytes), type %u, ", rh->ip6r_nxt, 1785 rh->ip6r_len, (rh->ip6r_len + 1) << 3, rh->ip6r_type); 1786 if ((segments = inet6_rth_segments(extbuf)) >= 0) 1787 printf("%d segments, ", segments); 1788 else 1789 printf("segments unknown, "); 1790 printf("%d left\n", rh->ip6r_segleft); 1791 1792 for (i = 0; i < segments; i++) { 1793 in6 = inet6_rth_getaddr(extbuf, i); 1794 if (in6 == NULL) 1795 printf(" [%d]<NULL>\n", i); 1796 else { 1797 if (!inet_ntop(AF_INET6, in6, ntopbuf, 1798 sizeof(ntopbuf))) 1799 strncpy(ntopbuf, "?", sizeof(ntopbuf)); 1800 printf(" [%d]%s\n", i, ntopbuf); 1801 } 1802 } 1803 1804 return; 1805 1806 } 1807 1808 #else /* !USE_RFC2292BIS */ 1809 /* ARGSUSED */ 1810 void 1811 pr_rthdr(void *extbuf) 1812 { 1813 putchar('\n'); 1814 return; 1815 } 1816 #endif /* USE_RFC2292BIS */ 1817 1818 int 1819 pr_bitrange(v, soff, ii) 1820 u_int32_t v; 1821 int soff; 1822 int ii; 1823 { 1824 int off; 1825 int i; 1826 1827 off = 0; 1828 while (off < 32) { 1829 /* shift till we have 0x01 */ 1830 if ((v & 0x01) == 0) { 1831 if (ii > 1) 1832 printf("-%u", soff + off - 1); 1833 ii = 0; 1834 switch (v & 0x0f) { 1835 case 0x00: 1836 v >>= 4; 1837 off += 4; 1838 continue; 1839 case 0x08: 1840 v >>= 3; 1841 off += 3; 1842 continue; 1843 case 0x04: case 0x0c: 1844 v >>= 2; 1845 off += 2; 1846 continue; 1847 default: 1848 v >>= 1; 1849 off += 1; 1850 continue; 1851 } 1852 } 1853 1854 /* we have 0x01 with us */ 1855 for (i = 0; i < 32 - off; i++) { 1856 if ((v & (0x01 << i)) == 0) 1857 break; 1858 } 1859 if (!ii) 1860 printf(" %u", soff + off); 1861 ii += i; 1862 v >>= i; off += i; 1863 } 1864 return ii; 1865 } 1866 1867 void 1868 pr_suptypes(ni, nilen) 1869 struct icmp6_nodeinfo *ni; /* ni->qtype must be SUPTYPES */ 1870 size_t nilen; 1871 { 1872 size_t clen; 1873 u_int32_t v; 1874 const u_char *cp, *end; 1875 u_int16_t cur; 1876 struct cbit { 1877 u_int16_t words; /*32bit count*/ 1878 u_int16_t skip; 1879 } cbit; 1880 #define MAXQTYPES (1 << 16) 1881 size_t off; 1882 int b; 1883 1884 cp = (u_char *)(ni + 1); 1885 end = ((u_char *)ni) + nilen; 1886 cur = 0; 1887 b = 0; 1888 1889 printf("NodeInfo Supported Qtypes"); 1890 if (options & F_VERBOSE) { 1891 if (ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) 1892 printf(", compressed bitmap"); 1893 else 1894 printf(", raw bitmap"); 1895 } 1896 1897 while (cp < end) { 1898 clen = (size_t)(end - cp); 1899 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) == 0) { 1900 if (clen == 0 || clen > MAXQTYPES / 8 || 1901 clen % sizeof(v)) { 1902 printf("???"); 1903 return; 1904 } 1905 } else { 1906 if (clen < sizeof(cbit) || clen % sizeof(v)) 1907 return; 1908 memcpy(&cbit, cp, sizeof(cbit)); 1909 if (sizeof(cbit) + ntohs(cbit.words) * sizeof(v) > 1910 clen) 1911 return; 1912 cp += sizeof(cbit); 1913 clen = ntohs(cbit.words) * sizeof(v); 1914 if (cur + clen * 8 + (u_long)ntohs(cbit.skip) * 32 > 1915 MAXQTYPES) 1916 return; 1917 } 1918 1919 for (off = 0; off < clen; off += sizeof(v)) { 1920 memcpy(&v, cp + off, sizeof(v)); 1921 v = (u_int32_t)ntohl(v); 1922 b = pr_bitrange(v, (int)(cur + off * 8), b); 1923 } 1924 /* flush the remaining bits */ 1925 b = pr_bitrange(0, (int)(cur + off * 8), b); 1926 1927 cp += clen; 1928 cur += clen * 8; 1929 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) != 0) 1930 cur += ntohs(cbit.skip) * 32; 1931 } 1932 } 1933 1934 void 1935 pr_nodeaddr(ni, nilen) 1936 struct icmp6_nodeinfo *ni; /* ni->qtype must be NODEADDR */ 1937 int nilen; 1938 { 1939 u_char *cp = (u_char *)(ni + 1); 1940 char ntop_buf[INET6_ADDRSTRLEN]; 1941 int withttl = 0; 1942 1943 nilen -= sizeof(struct icmp6_nodeinfo); 1944 1945 if (options & F_VERBOSE) { 1946 switch (ni->ni_code) { 1947 case ICMP6_NI_REFUSED: 1948 (void)printf("refused"); 1949 break; 1950 case ICMP6_NI_UNKNOWN: 1951 (void)printf("unknown qtype"); 1952 break; 1953 } 1954 if (ni->ni_flags & NI_NODEADDR_FLAG_TRUNCATE) 1955 (void)printf(" truncated"); 1956 } 1957 putchar('\n'); 1958 if (nilen <= 0) 1959 printf(" no address\n"); 1960 1961 /* 1962 * In icmp-name-lookups 05 and later, TTL of each returned address 1963 * is contained in the resposne. We try to detect the version 1964 * by the length of the data, but note that the detection algorithm 1965 * is incomplete. We assume the latest draft by default. 1966 */ 1967 if (nilen % (sizeof(u_int32_t) + sizeof(struct in6_addr)) == 0) 1968 withttl = 1; 1969 while (nilen > 0) { 1970 u_int32_t ttl; 1971 1972 if (withttl) { 1973 /* XXX: alignment? */ 1974 ttl = (u_int32_t)ntohl(*(u_int32_t *)cp); 1975 cp += sizeof(u_int32_t); 1976 nilen -= sizeof(u_int32_t); 1977 } 1978 1979 if (inet_ntop(AF_INET6, cp, ntop_buf, sizeof(ntop_buf)) == 1980 NULL) 1981 strncpy(ntop_buf, "?", sizeof(ntop_buf)); 1982 printf(" %s", ntop_buf); 1983 if (withttl) { 1984 if (ttl == 0xffffffff) { 1985 /* 1986 * XXX: can this convention be applied to all 1987 * type of TTL (i.e. non-ND TTL)? 1988 */ 1989 printf("(TTL=infty)"); 1990 } 1991 else 1992 printf("(TTL=%u)", ttl); 1993 } 1994 putchar('\n'); 1995 1996 nilen -= sizeof(struct in6_addr); 1997 cp += sizeof(struct in6_addr); 1998 } 1999 } 2000 2001 int 2002 get_hoplim(mhdr) 2003 struct msghdr *mhdr; 2004 { 2005 struct cmsghdr *cm; 2006 2007 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm; 2008 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) { 2009 if (cm->cmsg_len == 0) 2010 return(-1); 2011 2012 if (cm->cmsg_level == IPPROTO_IPV6 && 2013 cm->cmsg_type == IPV6_HOPLIMIT && 2014 cm->cmsg_len == CMSG_LEN(sizeof(int))) 2015 return(*(int *)CMSG_DATA(cm)); 2016 } 2017 2018 return(-1); 2019 } 2020 2021 struct in6_pktinfo * 2022 get_rcvpktinfo(mhdr) 2023 struct msghdr *mhdr; 2024 { 2025 struct cmsghdr *cm; 2026 2027 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm; 2028 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) { 2029 if (cm->cmsg_len == 0) 2030 return(NULL); 2031 2032 if (cm->cmsg_level == IPPROTO_IPV6 && 2033 cm->cmsg_type == IPV6_PKTINFO && 2034 cm->cmsg_len == CMSG_LEN(sizeof(struct in6_pktinfo))) 2035 return((struct in6_pktinfo *)CMSG_DATA(cm)); 2036 } 2037 2038 return(NULL); 2039 } 2040 2041 int 2042 get_pathmtu(mhdr) 2043 struct msghdr *mhdr; 2044 { 2045 #ifdef IPV6_RECVPATHMTU 2046 struct cmsghdr *cm; 2047 struct ip6_mtuinfo *mtuctl = NULL; 2048 2049 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm; 2050 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) { 2051 if (cm->cmsg_len == 0) 2052 return(0); 2053 2054 if (cm->cmsg_level == IPPROTO_IPV6 && 2055 cm->cmsg_type == IPV6_PATHMTU && 2056 cm->cmsg_len == CMSG_LEN(sizeof(struct ip6_mtuinfo))) { 2057 mtuctl = (struct ip6_mtuinfo *)CMSG_DATA(cm); 2058 2059 /* 2060 * If the notified destination is different from 2061 * the one we are pinging, just ignore the info. 2062 * We check the scope ID only when both notified value 2063 * and our own value have non-0 values, because we may 2064 * have used the default scope zone ID for sending, 2065 * in which case the scope ID value is 0. 2066 */ 2067 if (!IN6_ARE_ADDR_EQUAL(&mtuctl->ip6m_addr.sin6_addr, 2068 &dst.sin6_addr) || 2069 (mtuctl->ip6m_addr.sin6_scope_id && 2070 dst.sin6_scope_id && 2071 mtuctl->ip6m_addr.sin6_scope_id != 2072 dst.sin6_scope_id)) { 2073 if ((options & F_VERBOSE) != 0) { 2074 printf("path MTU for %s is notified. " 2075 "(ignored)\n", 2076 pr_addr((struct sockaddr *)&mtuctl->ip6m_addr, 2077 sizeof(mtuctl->ip6m_addr))); 2078 } 2079 return(0); 2080 } 2081 2082 /* 2083 * Ignore an invalid MTU. XXX: can we just believe 2084 * the kernel check? 2085 */ 2086 if (mtuctl->ip6m_mtu < IPV6_MMTU) 2087 return(0); 2088 2089 /* notification for our destination. return the MTU. */ 2090 return((int)mtuctl->ip6m_mtu); 2091 } 2092 } 2093 #endif 2094 return(0); 2095 } 2096 2097 /* 2098 * tvsub -- 2099 * Subtract 2 timeval structs: out = out - in. Out is assumed to 2100 * be >= in. 2101 */ 2102 void 2103 tvsub(out, in) 2104 register struct timeval *out, *in; 2105 { 2106 if ((out->tv_usec -= in->tv_usec) < 0) { 2107 --out->tv_sec; 2108 out->tv_usec += 1000000; 2109 } 2110 out->tv_sec -= in->tv_sec; 2111 } 2112 2113 /* 2114 * onint -- 2115 * SIGINT handler. 2116 */ 2117 /* ARGSUSED */ 2118 void 2119 onint(notused) 2120 int notused; 2121 { 2122 summary(); 2123 2124 (void)signal(SIGINT, SIG_DFL); 2125 (void)kill(getpid(), SIGINT); 2126 2127 /* NOTREACHED */ 2128 exit(1); 2129 } 2130 2131 /* 2132 * summary -- 2133 * Print out statistics. 2134 */ 2135 void 2136 summary() 2137 { 2138 2139 (void)printf("\n--- %s ping6 statistics ---\n", hostname); 2140 (void)printf("%ld packets transmitted, ", ntransmitted); 2141 (void)printf("%ld packets received, ", nreceived); 2142 if (nrepeats) 2143 (void)printf("+%ld duplicates, ", nrepeats); 2144 if (ntransmitted) { 2145 if (nreceived > ntransmitted) 2146 (void)printf("-- somebody's printing up packets!"); 2147 else 2148 (void)printf("%d%% packet loss", 2149 (int) (((ntransmitted - nreceived) * 100) / 2150 ntransmitted)); 2151 } 2152 (void)putchar('\n'); 2153 if (nreceived && timing) { 2154 /* Only display average to microseconds */ 2155 double num = nreceived + nrepeats; 2156 double avg = tsum / num; 2157 #if defined(__OpenBSD__) || defined(__NetBSD__) 2158 double dev = sqrt(tsumsq / num - avg * avg); 2159 (void)printf( 2160 "round-trip min/avg/max/std-dev = %.3f/%.3f/%.3f/%.3f ms\n", 2161 tmin, avg, tmax, dev); 2162 #else 2163 (void)printf( 2164 "round-trip min/avg/max = %.3f/%.3f/%.3f ms\n", 2165 tmin, avg, tmax); 2166 #endif 2167 (void)fflush(stdout); 2168 } 2169 (void)fflush(stdout); 2170 } 2171 2172 /*subject type*/ 2173 static const char *niqcode[] = { 2174 "IPv6 address", 2175 "DNS label", /*or empty*/ 2176 "IPv4 address", 2177 }; 2178 2179 /*result code*/ 2180 static const char *nircode[] = { 2181 "Success", "Refused", "Unknown", 2182 }; 2183 2184 2185 /* 2186 * pr_icmph -- 2187 * Print a descriptive string about an ICMP header. 2188 */ 2189 void 2190 pr_icmph(icp, end) 2191 struct icmp6_hdr *icp; 2192 u_char *end; 2193 { 2194 char ntop_buf[INET6_ADDRSTRLEN]; 2195 struct nd_redirect *red; 2196 struct icmp6_nodeinfo *ni; 2197 char dnsname[MAXDNAME + 1]; 2198 const u_char *cp; 2199 size_t l; 2200 2201 switch (icp->icmp6_type) { 2202 case ICMP6_DST_UNREACH: 2203 switch (icp->icmp6_code) { 2204 case ICMP6_DST_UNREACH_NOROUTE: 2205 (void)printf("No Route to Destination\n"); 2206 break; 2207 case ICMP6_DST_UNREACH_ADMIN: 2208 (void)printf("Destination Administratively " 2209 "Unreachable\n"); 2210 break; 2211 case ICMP6_DST_UNREACH_BEYONDSCOPE: 2212 (void)printf("Destination Unreachable Beyond Scope\n"); 2213 break; 2214 case ICMP6_DST_UNREACH_ADDR: 2215 (void)printf("Destination Host Unreachable\n"); 2216 break; 2217 case ICMP6_DST_UNREACH_NOPORT: 2218 (void)printf("Destination Port Unreachable\n"); 2219 break; 2220 default: 2221 (void)printf("Destination Unreachable, Bad Code: %d\n", 2222 icp->icmp6_code); 2223 break; 2224 } 2225 /* Print returned IP header information */ 2226 pr_retip((struct ip6_hdr *)(icp + 1), end); 2227 break; 2228 case ICMP6_PACKET_TOO_BIG: 2229 (void)printf("Packet too big mtu = %d\n", 2230 (int)ntohl(icp->icmp6_mtu)); 2231 pr_retip((struct ip6_hdr *)(icp + 1), end); 2232 break; 2233 case ICMP6_TIME_EXCEEDED: 2234 switch (icp->icmp6_code) { 2235 case ICMP6_TIME_EXCEED_TRANSIT: 2236 (void)printf("Time to live exceeded\n"); 2237 break; 2238 case ICMP6_TIME_EXCEED_REASSEMBLY: 2239 (void)printf("Frag reassembly time exceeded\n"); 2240 break; 2241 default: 2242 (void)printf("Time exceeded, Bad Code: %d\n", 2243 icp->icmp6_code); 2244 break; 2245 } 2246 pr_retip((struct ip6_hdr *)(icp + 1), end); 2247 break; 2248 case ICMP6_PARAM_PROB: 2249 (void)printf("Parameter problem: "); 2250 switch (icp->icmp6_code) { 2251 case ICMP6_PARAMPROB_HEADER: 2252 (void)printf("Erroneous Header "); 2253 break; 2254 case ICMP6_PARAMPROB_NEXTHEADER: 2255 (void)printf("Unknown Nextheader "); 2256 break; 2257 case ICMP6_PARAMPROB_OPTION: 2258 (void)printf("Unrecognized Option "); 2259 break; 2260 default: 2261 (void)printf("Bad code(%d) ", icp->icmp6_code); 2262 break; 2263 } 2264 (void)printf("pointer = 0x%02x\n", 2265 (u_int32_t)ntohl(icp->icmp6_pptr)); 2266 pr_retip((struct ip6_hdr *)(icp + 1), end); 2267 break; 2268 case ICMP6_ECHO_REQUEST: 2269 (void)printf("Echo Request"); 2270 /* XXX ID + Seq + Data */ 2271 break; 2272 case ICMP6_ECHO_REPLY: 2273 (void)printf("Echo Reply"); 2274 /* XXX ID + Seq + Data */ 2275 break; 2276 case ICMP6_MEMBERSHIP_QUERY: 2277 (void)printf("Listener Query"); 2278 break; 2279 case ICMP6_MEMBERSHIP_REPORT: 2280 (void)printf("Listener Report"); 2281 break; 2282 case ICMP6_MEMBERSHIP_REDUCTION: 2283 (void)printf("Listener Done"); 2284 break; 2285 case ND_ROUTER_SOLICIT: 2286 (void)printf("Router Solicitation"); 2287 break; 2288 case ND_ROUTER_ADVERT: 2289 (void)printf("Router Advertisement"); 2290 break; 2291 case ND_NEIGHBOR_SOLICIT: 2292 (void)printf("Neighbor Solicitation"); 2293 break; 2294 case ND_NEIGHBOR_ADVERT: 2295 (void)printf("Neighbor Advertisement"); 2296 break; 2297 case ND_REDIRECT: 2298 red = (struct nd_redirect *)icp; 2299 (void)printf("Redirect\n"); 2300 if (!inet_ntop(AF_INET6, &red->nd_rd_dst, ntop_buf, 2301 sizeof(ntop_buf))) 2302 strncpy(ntop_buf, "?", sizeof(ntop_buf)); 2303 (void)printf("Destination: %s", ntop_buf); 2304 if (!inet_ntop(AF_INET6, &red->nd_rd_target, ntop_buf, 2305 sizeof(ntop_buf))) 2306 strncpy(ntop_buf, "?", sizeof(ntop_buf)); 2307 (void)printf(" New Target: %s", ntop_buf); 2308 break; 2309 case ICMP6_NI_QUERY: 2310 (void)printf("Node Information Query"); 2311 /* XXX ID + Seq + Data */ 2312 ni = (struct icmp6_nodeinfo *)icp; 2313 l = end - (u_char *)(ni + 1); 2314 printf(", "); 2315 switch (ntohs(ni->ni_qtype)) { 2316 case NI_QTYPE_NOOP: 2317 (void)printf("NOOP"); 2318 break; 2319 case NI_QTYPE_SUPTYPES: 2320 (void)printf("Supported qtypes"); 2321 break; 2322 case NI_QTYPE_FQDN: 2323 (void)printf("DNS name"); 2324 break; 2325 case NI_QTYPE_NODEADDR: 2326 (void)printf("nodeaddr"); 2327 break; 2328 case NI_QTYPE_IPV4ADDR: 2329 (void)printf("IPv4 nodeaddr"); 2330 break; 2331 default: 2332 (void)printf("unknown qtype"); 2333 break; 2334 } 2335 if (options & F_VERBOSE) { 2336 switch (ni->ni_code) { 2337 case ICMP6_NI_SUBJ_IPV6: 2338 if (l == sizeof(struct in6_addr) && 2339 inet_ntop(AF_INET6, ni + 1, ntop_buf, 2340 sizeof(ntop_buf)) != NULL) { 2341 (void)printf(", subject=%s(%s)", 2342 niqcode[ni->ni_code], ntop_buf); 2343 } else { 2344 #if 1 2345 /* backward compat to -W */ 2346 (void)printf(", oldfqdn"); 2347 #else 2348 (void)printf(", invalid"); 2349 #endif 2350 } 2351 break; 2352 case ICMP6_NI_SUBJ_FQDN: 2353 if (end == (u_char *)(ni + 1)) { 2354 (void)printf(", no subject"); 2355 break; 2356 } 2357 printf(", subject=%s", niqcode[ni->ni_code]); 2358 cp = (const u_char *)(ni + 1); 2359 if (dnsdecode(&cp, end, NULL, dnsname, 2360 sizeof(dnsname)) != NULL) 2361 printf("(%s)", dnsname); 2362 else 2363 printf("(invalid)"); 2364 break; 2365 case ICMP6_NI_SUBJ_IPV4: 2366 if (l == sizeof(struct in_addr) && 2367 inet_ntop(AF_INET, ni + 1, ntop_buf, 2368 sizeof(ntop_buf)) != NULL) { 2369 (void)printf(", subject=%s(%s)", 2370 niqcode[ni->ni_code], ntop_buf); 2371 } else 2372 (void)printf(", invalid"); 2373 break; 2374 default: 2375 (void)printf(", invalid"); 2376 break; 2377 } 2378 } 2379 break; 2380 case ICMP6_NI_REPLY: 2381 (void)printf("Node Information Reply"); 2382 /* XXX ID + Seq + Data */ 2383 ni = (struct icmp6_nodeinfo *)icp; 2384 printf(", "); 2385 switch (ntohs(ni->ni_qtype)) { 2386 case NI_QTYPE_NOOP: 2387 (void)printf("NOOP"); 2388 break; 2389 case NI_QTYPE_SUPTYPES: 2390 (void)printf("Supported qtypes"); 2391 break; 2392 case NI_QTYPE_FQDN: 2393 (void)printf("DNS name"); 2394 break; 2395 case NI_QTYPE_NODEADDR: 2396 (void)printf("nodeaddr"); 2397 break; 2398 case NI_QTYPE_IPV4ADDR: 2399 (void)printf("IPv4 nodeaddr"); 2400 break; 2401 default: 2402 (void)printf("unknown qtype"); 2403 break; 2404 } 2405 if (options & F_VERBOSE) { 2406 if (ni->ni_code > sizeof(nircode) / sizeof(nircode[0])) 2407 printf(", invalid"); 2408 else 2409 printf(", %s", nircode[ni->ni_code]); 2410 } 2411 break; 2412 default: 2413 (void)printf("Bad ICMP type: %d", icp->icmp6_type); 2414 } 2415 } 2416 2417 /* 2418 * pr_iph -- 2419 * Print an IP6 header. 2420 */ 2421 void 2422 pr_iph(ip6) 2423 struct ip6_hdr *ip6; 2424 { 2425 u_int32_t flow = ip6->ip6_flow & IPV6_FLOWLABEL_MASK; 2426 u_int8_t tc; 2427 char ntop_buf[INET6_ADDRSTRLEN]; 2428 2429 tc = *(&ip6->ip6_vfc + 1); /* XXX */ 2430 tc = (tc >> 4) & 0x0f; 2431 tc |= (ip6->ip6_vfc << 4); 2432 2433 printf("Vr TC Flow Plen Nxt Hlim\n"); 2434 printf(" %1x %02x %05x %04x %02x %02x\n", 2435 (ip6->ip6_vfc & IPV6_VERSION_MASK) >> 4, tc, (u_int32_t)ntohl(flow), 2436 ntohs(ip6->ip6_plen), ip6->ip6_nxt, ip6->ip6_hlim); 2437 if (!inet_ntop(AF_INET6, &ip6->ip6_src, ntop_buf, sizeof(ntop_buf))) 2438 strncpy(ntop_buf, "?", sizeof(ntop_buf)); 2439 printf("%s->", ntop_buf); 2440 if (!inet_ntop(AF_INET6, &ip6->ip6_dst, ntop_buf, sizeof(ntop_buf))) 2441 strncpy(ntop_buf, "?", sizeof(ntop_buf)); 2442 printf("%s\n", ntop_buf); 2443 } 2444 2445 /* 2446 * pr_addr -- 2447 * Return an ascii host address as a dotted quad and optionally with 2448 * a hostname. 2449 */ 2450 const char * 2451 pr_addr(addr, addrlen) 2452 struct sockaddr *addr; 2453 int addrlen; 2454 { 2455 static char buf[NI_MAXHOST]; 2456 int flag; 2457 2458 #ifdef NI_WITHSCOPEID 2459 flag = NI_WITHSCOPEID; 2460 #else 2461 flag = 0; 2462 #endif 2463 if ((options & F_HOSTNAME) == 0) 2464 flag |= NI_NUMERICHOST; 2465 2466 if (getnameinfo(addr, addrlen, buf, sizeof(buf), NULL, 0, flag) == 0) 2467 return (buf); 2468 else 2469 return "?"; 2470 } 2471 2472 /* 2473 * pr_retip -- 2474 * Dump some info on a returned (via ICMPv6) IPv6 packet. 2475 */ 2476 void 2477 pr_retip(ip6, end) 2478 struct ip6_hdr *ip6; 2479 u_char *end; 2480 { 2481 u_char *cp = (u_char *)ip6, nh; 2482 int hlen; 2483 2484 if (end - (u_char *)ip6 < sizeof(*ip6)) { 2485 printf("IP6"); 2486 goto trunc; 2487 } 2488 pr_iph(ip6); 2489 hlen = sizeof(*ip6); 2490 2491 nh = ip6->ip6_nxt; 2492 cp += hlen; 2493 while (end - cp >= 8) { 2494 switch (nh) { 2495 case IPPROTO_HOPOPTS: 2496 printf("HBH "); 2497 hlen = (((struct ip6_hbh *)cp)->ip6h_len+1) << 3; 2498 nh = ((struct ip6_hbh *)cp)->ip6h_nxt; 2499 break; 2500 case IPPROTO_DSTOPTS: 2501 printf("DSTOPT "); 2502 hlen = (((struct ip6_dest *)cp)->ip6d_len+1) << 3; 2503 nh = ((struct ip6_dest *)cp)->ip6d_nxt; 2504 break; 2505 case IPPROTO_FRAGMENT: 2506 printf("FRAG "); 2507 hlen = sizeof(struct ip6_frag); 2508 nh = ((struct ip6_frag *)cp)->ip6f_nxt; 2509 break; 2510 case IPPROTO_ROUTING: 2511 printf("RTHDR "); 2512 hlen = (((struct ip6_rthdr *)cp)->ip6r_len+1) << 3; 2513 nh = ((struct ip6_rthdr *)cp)->ip6r_nxt; 2514 break; 2515 #ifdef IPSEC 2516 case IPPROTO_AH: 2517 printf("AH "); 2518 hlen = (((struct ah *)cp)->ah_len+2) << 2; 2519 nh = ((struct ah *)cp)->ah_nxt; 2520 break; 2521 #endif 2522 case IPPROTO_ICMPV6: 2523 printf("ICMP6: type = %d, code = %d\n", 2524 *cp, *(cp + 1)); 2525 return; 2526 case IPPROTO_ESP: 2527 printf("ESP\n"); 2528 return; 2529 case IPPROTO_TCP: 2530 printf("TCP: from port %u, to port %u (decimal)\n", 2531 (*cp * 256 + *(cp + 1)), 2532 (*(cp + 2) * 256 + *(cp + 3))); 2533 return; 2534 case IPPROTO_UDP: 2535 printf("UDP: from port %u, to port %u (decimal)\n", 2536 (*cp * 256 + *(cp + 1)), 2537 (*(cp + 2) * 256 + *(cp + 3))); 2538 return; 2539 default: 2540 printf("Unknown Header(%d)\n", nh); 2541 return; 2542 } 2543 2544 if ((cp += hlen) >= end) 2545 goto trunc; 2546 } 2547 if (end - cp < 8) 2548 goto trunc; 2549 2550 putchar('\n'); 2551 return; 2552 2553 trunc: 2554 printf("...\n"); 2555 return; 2556 } 2557 2558 void 2559 fill(bp, patp) 2560 char *bp, *patp; 2561 { 2562 register int ii, jj, kk; 2563 int pat[16]; 2564 char *cp; 2565 2566 for (cp = patp; *cp; cp++) 2567 if (!isxdigit(*cp)) 2568 errx(1, "patterns must be specified as hex digits"); 2569 ii = sscanf(patp, 2570 "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x", 2571 &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6], 2572 &pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12], 2573 &pat[13], &pat[14], &pat[15]); 2574 2575 /* xxx */ 2576 if (ii > 0) 2577 for (kk = 0; 2578 kk <= MAXDATALEN - (8 + sizeof(struct timeval) + ii); 2579 kk += ii) 2580 for (jj = 0; jj < ii; ++jj) 2581 bp[jj + kk] = pat[jj]; 2582 if (!(options & F_QUIET)) { 2583 (void)printf("PATTERN: 0x"); 2584 for (jj = 0; jj < ii; ++jj) 2585 (void)printf("%02x", bp[jj] & 0xFF); 2586 (void)printf("\n"); 2587 } 2588 } 2589 2590 #ifdef IPSEC 2591 #ifdef IPSEC_POLICY_IPSEC 2592 int 2593 setpolicy(so, policy) 2594 int so; 2595 char *policy; 2596 { 2597 char *buf; 2598 2599 if (policy == NULL) 2600 return 0; /* ignore */ 2601 2602 buf = ipsec_set_policy(policy, strlen(policy)); 2603 if (buf == NULL) 2604 errx(1, "%s", ipsec_strerror()); 2605 if (setsockopt(s, IPPROTO_IPV6, IPV6_IPSEC_POLICY, buf, 2606 ipsec_get_policylen(buf)) < 0) 2607 warnx("Unable to set IPSec policy"); 2608 free(buf); 2609 2610 return 0; 2611 } 2612 #endif 2613 #endif 2614 2615 char * 2616 nigroup(name) 2617 char *name; 2618 { 2619 char *p; 2620 unsigned char *q; 2621 MD5_CTX ctxt; 2622 u_int8_t digest[16]; 2623 u_int8_t c; 2624 size_t l; 2625 char hbuf[NI_MAXHOST]; 2626 struct in6_addr in6; 2627 2628 p = strchr(name, '.'); 2629 if (!p) 2630 p = name + strlen(name); 2631 l = p - name; 2632 if (l > 63 || l > sizeof(hbuf) - 1) 2633 return NULL; /*label too long*/ 2634 strncpy(hbuf, name, l); 2635 hbuf[(int)l] = '\0'; 2636 2637 for (q = name; *q; q++) { 2638 if (isupper(*q)) 2639 *q = tolower(*q); 2640 } 2641 2642 /* generate 8 bytes of pseudo-random value. */ 2643 bzero(&ctxt, sizeof(ctxt)); 2644 MD5Init(&ctxt); 2645 c = l & 0xff; 2646 MD5Update(&ctxt, &c, sizeof(c)); 2647 MD5Update(&ctxt, name, l); 2648 MD5Final(digest, &ctxt); 2649 2650 if (inet_pton(AF_INET6, "ff02::2:0000:0000", &in6) != 1) 2651 return NULL; /*XXX*/ 2652 bcopy(digest, &in6.s6_addr[12], 4); 2653 2654 if (inet_ntop(AF_INET6, &in6, hbuf, sizeof(hbuf)) == NULL) 2655 return NULL; 2656 2657 return strdup(hbuf); 2658 } 2659 2660 void 2661 usage() 2662 { 2663 (void)fprintf(stderr, 2664 "usage: ping6 [-dfH" 2665 #ifdef IPV6_USE_MIN_MTU 2666 "m" 2667 #endif 2668 "nNqtvwW" 2669 #ifdef IPV6_REACHCONF 2670 "R" 2671 #endif 2672 #ifdef IPSEC 2673 #ifdef IPSEC_POLICY_IPSEC 2674 "] [-P policy" 2675 #else 2676 "AE" 2677 #endif 2678 #endif 2679 "] [-a [aAclsg]] [-b sockbufsiz] [-c count] \n" 2680 "\t[-I interface] [-i wait] [-l preload] [-p pattern] " 2681 "[-S sourceaddr]\n" 2682 "\t[-s packetsize] [-h hoplimit] [hops...] host\n"); 2683 exit(1); 2684 } 2685
Indexes created Mon Oct 20 20:10:13 GMT 2025