ping6.c revision 1.71.4.1
1 /* $NetBSD: ping6.c,v 1.71.4.1 2009/05/13 19:19:05 jym Exp $ */ 2 /* $KAME: ping6.c,v 1.164 2002/11/16 14:05:37 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. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 */ 66 67 #if 0 68 #ifndef lint 69 static char copyright[] = 70 "@(#) Copyright (c) 1989, 1993\n\ 71 The Regents of the University of California. All rights reserved.\n"; 72 #endif /* not lint */ 73 74 #ifndef lint 75 static char sccsid[] = "@(#)ping.c 8.1 (Berkeley) 6/5/93"; 76 #endif /* not lint */ 77 #else 78 #include <sys/cdefs.h> 79 #ifndef lint 80 __RCSID("$NetBSD: ping6.c,v 1.71.4.1 2009/05/13 19:19:05 jym Exp $"); 81 #endif 82 #endif 83 84 /* 85 * Using the InterNet Control Message Protocol (ICMP) "ECHO" facility, 86 * measure round-trip-delays and packet loss across network paths. 87 * 88 * Author - 89 * Mike Muuss 90 * U. S. Army Ballistic Research Laboratory 91 * December, 1983 92 * 93 * Status - 94 * Public Domain. Distribution Unlimited. 95 * Bugs - 96 * More statistics could always be gathered. 97 * This program has to run SUID to ROOT to access the ICMP socket. 98 */ 99 /* 100 * NOTE: 101 * USE_SIN6_SCOPE_ID assumes that sin6_scope_id has the same semantics 102 * as IPV6_PKTINFO. Some people object it (sin6_scope_id specifies *link* 103 * while IPV6_PKTINFO specifies *interface*. Link is defined as collection of 104 * network attached to 1 or more interfaces) 105 */ 106 107 #include <sys/param.h> 108 #include <sys/uio.h> 109 #include <sys/socket.h> 110 #include <sys/time.h> 111 112 #include <net/if.h> 113 #include <net/route.h> 114 115 #include <netinet/in.h> 116 #include <netinet/ip6.h> 117 #include <netinet/icmp6.h> 118 #include <arpa/inet.h> 119 #include <arpa/nameser.h> 120 #include <netdb.h> 121 122 #include <ctype.h> 123 #include <err.h> 124 #include <errno.h> 125 #include <fcntl.h> 126 #include <math.h> 127 #include <signal.h> 128 #include <stdio.h> 129 #include <stdlib.h> 130 #include <string.h> 131 #include <unistd.h> 132 #include <poll.h> 133 134 #ifdef IPSEC 135 #include <netinet6/ah.h> 136 #include <netinet6/ipsec.h> 137 #endif 138 139 #include <md5.h> 140 141 struct tv32 { 142 u_int32_t tv32_sec; 143 u_int32_t tv32_usec; 144 }; 145 146 #define MAXPACKETLEN 131072 147 #define IP6LEN 40 148 #define ICMP6ECHOLEN 8 /* icmp echo header len excluding time */ 149 #define ICMP6ECHOTMLEN sizeof(struct tv32) 150 #define ICMP6_NIQLEN (ICMP6ECHOLEN + 8) 151 /* FQDN case, 64 bits of nonce + 32 bits ttl */ 152 #define ICMP6_NIRLEN (ICMP6ECHOLEN + 12) 153 #define EXTRA 256 /* for AH and various other headers. weird. */ 154 #define DEFDATALEN ICMP6ECHOTMLEN 155 #define MAXDATALEN MAXPACKETLEN - IP6LEN - ICMP6ECHOLEN 156 #define NROUTES 9 /* number of record route slots */ 157 158 #define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */ 159 #define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */ 160 #define SET(bit) (A(bit) |= B(bit)) 161 #define CLR(bit) (A(bit) &= (~B(bit))) 162 #define TST(bit) (A(bit) & B(bit)) 163 164 #define F_FLOOD 0x0001 165 #define F_INTERVAL 0x0002 166 #define F_PINGFILLED 0x0008 167 #define F_QUIET 0x0010 168 #define F_RROUTE 0x0020 169 #define F_SO_DEBUG 0x0040 170 #define F_VERBOSE 0x0100 171 #ifdef IPSEC 172 #ifdef IPSEC_POLICY_IPSEC 173 #define F_POLICY 0x0400 174 #else 175 #define F_AUTHHDR 0x0200 176 #define F_ENCRYPT 0x0400 177 #endif /*IPSEC_POLICY_IPSEC*/ 178 #endif /*IPSEC*/ 179 #define F_NODEADDR 0x0800 180 #define F_FQDN 0x1000 181 #define F_INTERFACE 0x2000 182 #define F_SRCADDR 0x4000 183 #ifdef IPV6_REACHCONF 184 #define F_REACHCONF 0x8000 185 #endif 186 #define F_HOSTNAME 0x10000 187 #define F_FQDNOLD 0x20000 188 #define F_NIGROUP 0x40000 189 #define F_SUPTYPES 0x80000 190 #define F_NOMINMTU 0x100000 191 #define F_NOUSERDATA (F_NODEADDR | F_FQDN | F_FQDNOLD | F_SUPTYPES) 192 u_int options; 193 194 #define IN6LEN sizeof(struct in6_addr) 195 #define SA6LEN sizeof(struct sockaddr_in6) 196 #define DUMMY_PORT 10101 197 198 #define SIN6(s) ((struct sockaddr_in6 *)(s)) 199 200 /* 201 * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum 202 * number of received sequence numbers we can keep track of. Change 128 203 * to 8192 for complete accuracy... 204 */ 205 #define MAX_DUP_CHK (8 * 8192) 206 int mx_dup_ck = MAX_DUP_CHK; 207 char rcvd_tbl[MAX_DUP_CHK / 8]; 208 209 struct addrinfo *res; 210 struct sockaddr_in6 dst; /* who to ping6 */ 211 struct sockaddr_in6 src; /* src addr of this packet */ 212 socklen_t srclen; 213 int datalen = DEFDATALEN; 214 int s; /* socket file descriptor */ 215 u_char outpack[MAXPACKETLEN]; 216 char BSPACE = '\b'; /* characters written for flood */ 217 char DOT = '.'; 218 char *hostname; 219 int ident; /* process id to identify our packets */ 220 u_int8_t nonce[8]; /* nonce field for node information */ 221 int hoplimit = -1; /* hoplimit */ 222 int pathmtu = 0; /* path MTU for the destination. 0 = unspec. */ 223 224 /* counters */ 225 long npackets; /* max packets to transmit */ 226 long nreceived; /* # of packets we got back */ 227 long nrepeats; /* number of duplicates */ 228 long ntransmitted; /* sequence # for outbound packets = #sent */ 229 struct timeval interval = {1, 0}; /* interval between packets */ 230 231 /* timing */ 232 int timing; /* flag to do timing */ 233 double tmin = 999999999.0; /* minimum round trip time */ 234 double tmax = 0.0; /* maximum round trip time */ 235 double tsum = 0.0; /* sum of all times, for doing average */ 236 double tsumsq = 0.0; /* sum of all times squared, for std. dev. */ 237 238 /* for node addresses */ 239 u_short naflags; 240 241 /* for ancillary data(advanced API) */ 242 struct msghdr smsghdr; 243 struct iovec smsgiov; 244 char *scmsg = 0; 245 246 volatile sig_atomic_t seenalrm; 247 volatile sig_atomic_t seenint; 248 #ifdef SIGINFO 249 volatile sig_atomic_t seeninfo; 250 #endif 251 252 void fill(char *, char *); 253 int get_hoplim(struct msghdr *); 254 int get_pathmtu(struct msghdr *); 255 struct in6_pktinfo *get_rcvpktinfo(struct msghdr *); 256 void onsignal(int); 257 void retransmit(void); 258 void onint(int); 259 size_t pingerlen(void); 260 int pinger(void); 261 const char *pr_addr(struct sockaddr *, int); 262 void pr_icmph(struct icmp6_hdr *, u_char *); 263 void pr_iph(struct ip6_hdr *); 264 void pr_suptypes(struct icmp6_nodeinfo *, size_t); 265 void pr_nodeaddr(struct icmp6_nodeinfo *, int); 266 int myechoreply(const struct icmp6_hdr *); 267 int mynireply(const struct icmp6_nodeinfo *); 268 char *dnsdecode(const u_char **, const u_char *, const u_char *, 269 char *, size_t); 270 void pr_pack(u_char *, int, struct msghdr *); 271 void pr_exthdrs(struct msghdr *); 272 void pr_ip6opt(void *); 273 void pr_rthdr(void *); 274 int pr_bitrange(u_int32_t, int, int); 275 void pr_retip(struct ip6_hdr *, u_char *); 276 void summary(void); 277 void tvsub(struct timeval *, struct timeval *); 278 int setpolicy(int, char *); 279 char *nigroup(char *); 280 void usage(void); 281 282 int 283 main(int argc, char *argv[]) 284 { 285 struct itimerval itimer; 286 struct sockaddr_in6 from; 287 int timeout; 288 struct addrinfo hints; 289 struct pollfd fdmaskp[1]; 290 int cc; 291 u_int i, packlen; 292 int ch, hold, preload, optval, ret_ga; 293 u_char *datap, *packet; 294 char *e, *target, *ifname = NULL, *gateway = NULL; 295 int ip6optlen = 0; 296 struct cmsghdr *scmsgp = NULL; 297 #if defined(SO_SNDBUF) && defined(SO_RCVBUF) 298 u_long lsockbufsize; 299 int sockbufsize = 0; 300 #endif 301 int usepktinfo = 0; 302 struct in6_pktinfo *pktinfo = NULL; 303 struct ip6_rthdr *rthdr = NULL; 304 #ifdef IPSEC_POLICY_IPSEC 305 char *policy_in = NULL; 306 char *policy_out = NULL; 307 #endif 308 double intval; 309 size_t rthlen; 310 #ifdef IPV6_USE_MIN_MTU 311 int mflag = 0; 312 #endif 313 314 /* just to be sure */ 315 memset(&smsghdr, 0, sizeof(smsghdr)); 316 memset(&smsgiov, 0, sizeof(smsgiov)); 317 318 preload = 0; 319 datap = &outpack[ICMP6ECHOLEN + ICMP6ECHOTMLEN]; 320 #ifndef IPSEC 321 #define ADDOPTS 322 #else 323 #ifdef IPSEC_POLICY_IPSEC 324 #define ADDOPTS "P:" 325 #else 326 #define ADDOPTS "AE" 327 #endif /*IPSEC_POLICY_IPSEC*/ 328 #endif 329 while ((ch = getopt(argc, argv, 330 "a:b:c:dfHg:h:I:i:l:mnNp:qRS:s:tvwW" ADDOPTS)) != -1) { 331 #undef ADDOPTS 332 switch (ch) { 333 case 'a': 334 { 335 char *cp; 336 337 options &= ~F_NOUSERDATA; 338 options |= F_NODEADDR; 339 for (cp = optarg; *cp != '\0'; cp++) { 340 switch (*cp) { 341 case 'a': 342 naflags |= NI_NODEADDR_FLAG_ALL; 343 break; 344 case 'c': 345 case 'C': 346 naflags |= NI_NODEADDR_FLAG_COMPAT; 347 break; 348 case 'l': 349 case 'L': 350 naflags |= NI_NODEADDR_FLAG_LINKLOCAL; 351 break; 352 case 's': 353 case 'S': 354 naflags |= NI_NODEADDR_FLAG_SITELOCAL; 355 break; 356 case 'g': 357 case 'G': 358 naflags |= NI_NODEADDR_FLAG_GLOBAL; 359 break; 360 case 'A': /* experimental. not in the spec */ 361 #ifdef NI_NODEADDR_FLAG_ANYCAST 362 naflags |= NI_NODEADDR_FLAG_ANYCAST; 363 break; 364 #else 365 errx(1, 366 "-a A is not supported on the platform"); 367 /*NOTREACHED*/ 368 #endif 369 default: 370 usage(); 371 /*NOTREACHED*/ 372 } 373 } 374 break; 375 } 376 case 'b': 377 #if defined(SO_SNDBUF) && defined(SO_RCVBUF) 378 errno = 0; 379 e = NULL; 380 lsockbufsize = strtoul(optarg, &e, 10); 381 sockbufsize = lsockbufsize; 382 if (errno || !*optarg || *e || 383 (u_long)sockbufsize != lsockbufsize) 384 errx(1, "invalid socket buffer size"); 385 #else 386 errx(1, 387 "-b option ignored: SO_SNDBUF/SO_RCVBUF socket options not supported"); 388 #endif 389 break; 390 case 'c': 391 npackets = strtol(optarg, &e, 10); 392 if (npackets <= 0 || *optarg == '\0' || *e != '\0') 393 errx(1, 394 "illegal number of packets -- %s", optarg); 395 break; 396 case 'd': 397 options |= F_SO_DEBUG; 398 break; 399 case 'f': 400 if (getuid()) { 401 errno = EPERM; 402 errx(1, "Must be superuser to flood ping"); 403 } 404 options |= F_FLOOD; 405 setbuf(stdout, (char *)NULL); 406 break; 407 case 'g': 408 gateway = optarg; 409 break; 410 case 'H': 411 options |= F_HOSTNAME; 412 break; 413 case 'h': /* hoplimit */ 414 hoplimit = strtol(optarg, &e, 10); 415 if (*optarg == '\0' || *e != '\0') 416 errx(1, "illegal hoplimit %s", optarg); 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 mflag++; 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 memset(&hints, 0, sizeof(struct addrinfo)); 487 hints.ai_flags = AI_NUMERICHOST; /* allow hostname? */ 488 hints.ai_family = AF_INET6; 489 hints.ai_socktype = SOCK_RAW; 490 hints.ai_protocol = IPPROTO_ICMPV6; 491 492 ret_ga = getaddrinfo(optarg, NULL, &hints, &res); 493 if (ret_ga) { 494 errx(1, "invalid source address: %s", 495 gai_strerror(ret_ga)); 496 } 497 /* 498 * res->ai_family must be AF_INET6 and res->ai_addrlen 499 * must be sizeof(src). 500 */ 501 memcpy(&src, res->ai_addr, res->ai_addrlen); 502 srclen = res->ai_addrlen; 503 freeaddrinfo(res); 504 options |= F_SRCADDR; 505 break; 506 case 's': /* size of packet to send */ 507 datalen = strtol(optarg, &e, 10); 508 if (datalen <= 0 || *optarg == '\0' || *e != '\0') 509 errx(1, "illegal datalen value -- %s", optarg); 510 if (datalen > MAXDATALEN) { 511 errx(1, 512 "datalen value too large, maximum is %d", 513 MAXDATALEN); 514 } 515 break; 516 case 't': 517 options &= ~F_NOUSERDATA; 518 options |= F_SUPTYPES; 519 break; 520 case 'v': 521 options |= F_VERBOSE; 522 break; 523 case 'w': 524 options &= ~F_NOUSERDATA; 525 options |= F_FQDN; 526 break; 527 case 'W': 528 options &= ~F_NOUSERDATA; 529 options |= F_FQDNOLD; 530 break; 531 #ifdef IPSEC 532 #ifdef IPSEC_POLICY_IPSEC 533 case 'P': 534 options |= F_POLICY; 535 if (!strncmp("in", optarg, 2)) { 536 if ((policy_in = strdup(optarg)) == NULL) 537 errx(1, "strdup"); 538 } else if (!strncmp("out", optarg, 3)) { 539 if ((policy_out = strdup(optarg)) == NULL) 540 errx(1, "strdup"); 541 } else 542 errx(1, "invalid security policy"); 543 break; 544 #else 545 case 'A': 546 options |= F_AUTHHDR; 547 break; 548 case 'E': 549 options |= F_ENCRYPT; 550 break; 551 #endif /*IPSEC_POLICY_IPSEC*/ 552 #endif /*IPSEC*/ 553 default: 554 usage(); 555 /*NOTREACHED*/ 556 } 557 } 558 559 argc -= optind; 560 argv += optind; 561 562 if (argc < 1) { 563 usage(); 564 /*NOTREACHED*/ 565 } 566 567 if (argc > 1) { 568 rthlen = CMSG_SPACE(inet6_rth_space(IPV6_RTHDR_TYPE_0, 569 argc - 1)); 570 if (rthlen == 0) { 571 errx(1, "too many intermediate hops"); 572 /*NOTREACHED*/ 573 } 574 ip6optlen += rthlen; 575 } 576 577 if (options & F_NIGROUP) { 578 target = nigroup(argv[argc - 1]); 579 if (target == NULL) { 580 usage(); 581 /*NOTREACHED*/ 582 } 583 } else 584 target = argv[argc - 1]; 585 586 /* getaddrinfo */ 587 memset(&hints, 0, sizeof(struct addrinfo)); 588 hints.ai_flags = AI_CANONNAME; 589 hints.ai_family = AF_INET6; 590 hints.ai_socktype = SOCK_RAW; 591 hints.ai_protocol = IPPROTO_ICMPV6; 592 593 ret_ga = getaddrinfo(target, NULL, &hints, &res); 594 if (ret_ga) 595 errx(1, "%s", gai_strerror(ret_ga)); 596 if (res->ai_canonname) 597 hostname = res->ai_canonname; 598 else 599 hostname = target; 600 601 if (!res->ai_addr) 602 errx(1, "getaddrinfo failed"); 603 604 (void)memcpy(&dst, res->ai_addr, res->ai_addrlen); 605 606 if ((s = socket(res->ai_family, res->ai_socktype, 607 res->ai_protocol)) < 0) 608 err(1, "socket"); 609 610 /* set the source address if specified. */ 611 if ((options & F_SRCADDR) && 612 bind(s, (struct sockaddr *)&src, srclen) != 0) { 613 err(1, "bind"); 614 } 615 616 /* set the gateway (next hop) if specified */ 617 if (gateway) { 618 struct addrinfo ghints, *gres; 619 int error; 620 621 memset(&ghints, 0, sizeof(ghints)); 622 ghints.ai_family = AF_INET6; 623 ghints.ai_socktype = SOCK_RAW; 624 ghints.ai_protocol = IPPROTO_ICMPV6; 625 626 error = getaddrinfo(gateway, NULL, &hints, &gres); 627 if (error) { 628 errx(1, "getaddrinfo for the gateway %s: %s", 629 gateway, gai_strerror(error)); 630 } 631 if (gres->ai_next && (options & F_VERBOSE)) 632 warnx("gateway resolves to multiple addresses"); 633 634 if (setsockopt(s, IPPROTO_IPV6, IPV6_NEXTHOP, 635 gres->ai_addr, gres->ai_addrlen)) { 636 err(1, "setsockopt(IPV6_NEXTHOP)"); 637 } 638 639 freeaddrinfo(gres); 640 } 641 642 /* 643 * let the kerel pass extension headers of incoming packets, 644 * for privileged socket options 645 */ 646 if ((options & F_VERBOSE) != 0) { 647 int opton = 1; 648 649 #ifdef IPV6_RECVHOPOPTS 650 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPOPTS, &opton, 651 sizeof(opton))) 652 err(1, "setsockopt(IPV6_RECVHOPOPTS)"); 653 #else /* old adv. API */ 654 if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPOPTS, &opton, 655 sizeof(opton))) 656 err(1, "setsockopt(IPV6_HOPOPTS)"); 657 #endif 658 #ifdef IPV6_RECVDSTOPTS 659 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVDSTOPTS, &opton, 660 sizeof(opton))) 661 err(1, "setsockopt(IPV6_RECVDSTOPTS)"); 662 #else /* old adv. API */ 663 if (setsockopt(s, IPPROTO_IPV6, IPV6_DSTOPTS, &opton, 664 sizeof(opton))) 665 err(1, "setsockopt(IPV6_DSTOPTS)"); 666 #endif 667 #ifdef IPV6_RECVRTHDRDSTOPTS 668 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDRDSTOPTS, &opton, 669 sizeof(opton))) 670 err(1, "setsockopt(IPV6_RECVRTHDRDSTOPTS)"); 671 #endif 672 } 673 674 /* revoke root privilege */ 675 seteuid(getuid()); 676 setuid(getuid()); 677 678 if ((options & F_FLOOD) && (options & F_INTERVAL)) 679 errx(1, "-f and -i incompatible options"); 680 681 if ((options & F_NOUSERDATA) == 0) { 682 if (datalen >= (int)sizeof(struct tv32)) { 683 /* we can time transfer */ 684 timing = 1; 685 } else 686 timing = 0; 687 /* in F_VERBOSE case, we may get non-echoreply packets*/ 688 if (options & F_VERBOSE) 689 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA; 690 else 691 packlen = datalen + IP6LEN + ICMP6ECHOLEN + EXTRA; 692 } else { 693 /* suppress timing for node information query */ 694 timing = 0; 695 datalen = 2048; 696 packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA; 697 } 698 699 if (!(packet = (u_char *)malloc(packlen))) 700 err(1, "Unable to allocate packet"); 701 if (!(options & F_PINGFILLED)) 702 for (i = ICMP6ECHOLEN; i < packlen; ++i) 703 *datap++ = i; 704 705 ident = arc4random() & 0xFFFF; 706 memset(nonce, 0, sizeof(nonce)); 707 for (i = 0; i < sizeof(nonce); i += sizeof(u_int32_t)) 708 *((u_int32_t *)&nonce[i]) = arc4random(); 709 710 hold = 1; 711 712 if (options & F_SO_DEBUG) 713 (void)setsockopt(s, SOL_SOCKET, SO_DEBUG, (char *)&hold, 714 sizeof(hold)); 715 optval = IPV6_DEFHLIM; 716 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr)) 717 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, 718 &optval, sizeof(optval)) == -1) 719 err(1, "IPV6_MULTICAST_HOPS"); 720 #ifdef IPV6_USE_MIN_MTU 721 if (mflag != 1) { 722 optval = mflag > 1 ? 0 : 1; 723 724 if (setsockopt(s, IPPROTO_IPV6, IPV6_USE_MIN_MTU, 725 &optval, sizeof(optval)) == -1) 726 err(1, "setsockopt(IPV6_USE_MIN_MTU)"); 727 } 728 #ifdef IPV6_RECVPATHMTU 729 else { 730 optval = 1; 731 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPATHMTU, 732 &optval, sizeof(optval)) == -1) 733 err(1, "setsockopt(IPV6_RECVPATHMTU)"); 734 } 735 #endif /* IPV6_RECVPATHMTU */ 736 #endif /* IPV6_USE_MIN_MTU */ 737 738 #ifdef IPSEC 739 #ifdef IPSEC_POLICY_IPSEC 740 if (options & F_POLICY) { 741 if (setpolicy(s, policy_in) < 0) 742 errx(1, "%s", ipsec_strerror()); 743 if (setpolicy(s, policy_out) < 0) 744 errx(1, "%s", ipsec_strerror()); 745 } 746 #else 747 if (options & F_AUTHHDR) { 748 optval = IPSEC_LEVEL_REQUIRE; 749 #ifdef IPV6_AUTH_TRANS_LEVEL 750 if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL, 751 &optval, sizeof(optval)) == -1) 752 err(1, "setsockopt(IPV6_AUTH_TRANS_LEVEL)"); 753 #else /* old def */ 754 if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_LEVEL, 755 &optval, sizeof(optval)) == -1) 756 err(1, "setsockopt(IPV6_AUTH_LEVEL)"); 757 #endif 758 } 759 if (options & F_ENCRYPT) { 760 optval = IPSEC_LEVEL_REQUIRE; 761 if (setsockopt(s, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL, 762 &optval, sizeof(optval)) == -1) 763 err(1, "setsockopt(IPV6_ESP_TRANS_LEVEL)"); 764 } 765 #endif /*IPSEC_POLICY_IPSEC*/ 766 #endif 767 768 #ifdef ICMP6_FILTER 769 { 770 struct icmp6_filter filt; 771 if (!(options & F_VERBOSE)) { 772 ICMP6_FILTER_SETBLOCKALL(&filt); 773 if ((options & F_FQDN) || (options & F_FQDNOLD) || 774 (options & F_NODEADDR) || (options & F_SUPTYPES)) 775 ICMP6_FILTER_SETPASS(ICMP6_NI_REPLY, &filt); 776 else 777 ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt); 778 } else { 779 ICMP6_FILTER_SETPASSALL(&filt); 780 } 781 if (setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, &filt, 782 sizeof(filt)) < 0) 783 err(1, "setsockopt(ICMP6_FILTER)"); 784 } 785 #endif /*ICMP6_FILTER*/ 786 787 /* let the kerel pass extension headers of incoming packets */ 788 if ((options & F_VERBOSE) != 0) { 789 int opton = 1; 790 791 #ifdef IPV6_RECVRTHDR 792 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDR, &opton, 793 sizeof(opton))) 794 err(1, "setsockopt(IPV6_RECVRTHDR)"); 795 #else /* old adv. API */ 796 if (setsockopt(s, IPPROTO_IPV6, IPV6_RTHDR, &opton, 797 sizeof(opton))) 798 err(1, "setsockopt(IPV6_RTHDR)"); 799 #endif 800 } 801 802 /* 803 optval = 1; 804 if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr)) 805 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, 806 &optval, sizeof(optval)) == -1) 807 err(1, "IPV6_MULTICAST_LOOP"); 808 */ 809 810 /* Specify the outgoing interface and/or the source address */ 811 if (usepktinfo) 812 ip6optlen += CMSG_SPACE(sizeof(struct in6_pktinfo)); 813 814 if (hoplimit != -1) 815 ip6optlen += CMSG_SPACE(sizeof(int)); 816 817 #ifdef IPV6_REACHCONF 818 if (options & F_REACHCONF) 819 ip6optlen += CMSG_SPACE(0); 820 #endif 821 822 /* set IP6 packet options */ 823 if (ip6optlen) { 824 if ((scmsg = (char *)malloc(ip6optlen)) == 0) 825 errx(1, "can't allocate enough memory"); 826 smsghdr.msg_control = (caddr_t)scmsg; 827 smsghdr.msg_controllen = ip6optlen; 828 scmsgp = (struct cmsghdr *)scmsg; 829 } 830 if (usepktinfo) { 831 pktinfo = (struct in6_pktinfo *)(CMSG_DATA(scmsgp)); 832 memset(pktinfo, 0, sizeof(*pktinfo)); 833 scmsgp->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); 834 scmsgp->cmsg_level = IPPROTO_IPV6; 835 scmsgp->cmsg_type = IPV6_PKTINFO; 836 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp); 837 } 838 839 /* set the outgoing interface */ 840 if (ifname) { 841 #ifndef USE_SIN6_SCOPE_ID 842 /* pktinfo must have already been allocated */ 843 if ((pktinfo->ipi6_ifindex = if_nametoindex(ifname)) == 0) 844 errx(1, "%s: invalid interface name", ifname); 845 #else 846 if ((dst.sin6_scope_id = if_nametoindex(ifname)) == 0) 847 errx(1, "%s: invalid interface name", ifname); 848 #endif 849 } 850 if (hoplimit != -1) { 851 scmsgp->cmsg_len = CMSG_LEN(sizeof(int)); 852 scmsgp->cmsg_level = IPPROTO_IPV6; 853 scmsgp->cmsg_type = IPV6_HOPLIMIT; 854 *(int *)(CMSG_DATA(scmsgp)) = hoplimit; 855 856 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp); 857 } 858 #ifdef IPV6_REACHCONF 859 if (options & F_REACHCONF) { 860 scmsgp->cmsg_len = CMSG_LEN(0); 861 scmsgp->cmsg_level = IPPROTO_IPV6; 862 scmsgp->cmsg_type = IPV6_REACHCONF; 863 864 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp); 865 } 866 #endif 867 868 if (argc > 1) { /* some intermediate addrs are specified */ 869 int hops, error; 870 int rthdrlen; 871 872 rthdrlen = inet6_rth_space(IPV6_RTHDR_TYPE_0, argc - 1); 873 scmsgp->cmsg_len = CMSG_LEN(rthdrlen); 874 scmsgp->cmsg_level = IPPROTO_IPV6; 875 scmsgp->cmsg_type = IPV6_RTHDR; 876 rthdr = (struct ip6_rthdr *)CMSG_DATA(scmsgp); 877 rthdr = inet6_rth_init((void *)rthdr, rthdrlen, 878 IPV6_RTHDR_TYPE_0, argc - 1); 879 if (rthdr == NULL) 880 errx(1, "can't initialize rthdr"); 881 882 for (hops = 0; hops < argc - 1; hops++) { 883 struct addrinfo *iaip; 884 885 if ((error = getaddrinfo(argv[hops], NULL, &hints, 886 &iaip))) 887 errx(1, "%s", gai_strerror(error)); 888 if (SIN6(iaip->ai_addr)->sin6_family != AF_INET6) 889 errx(1, 890 "bad addr family of an intermediate addr"); 891 892 if (inet6_rth_add(rthdr, 893 &(SIN6(iaip->ai_addr))->sin6_addr)) 894 errx(1, "can't add an intermediate node"); 895 freeaddrinfo(iaip); 896 } 897 898 scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp); 899 } 900 901 if (!(options & F_SRCADDR)) { 902 /* 903 * get the source address. XXX since we revoked the root 904 * privilege, we cannot use a raw socket for this. 905 */ 906 int dummy; 907 socklen_t len = sizeof(src); 908 909 if ((dummy = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 910 err(1, "UDP socket"); 911 912 src.sin6_family = AF_INET6; 913 src.sin6_addr = dst.sin6_addr; 914 src.sin6_port = ntohs(DUMMY_PORT); 915 src.sin6_scope_id = dst.sin6_scope_id; 916 917 if (pktinfo && 918 setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTINFO, 919 (void *)pktinfo, sizeof(*pktinfo))) 920 err(1, "UDP setsockopt(IPV6_PKTINFO)"); 921 922 if (hoplimit != -1 && 923 setsockopt(dummy, IPPROTO_IPV6, IPV6_UNICAST_HOPS, 924 (void *)&hoplimit, sizeof(hoplimit))) 925 err(1, "UDP setsockopt(IPV6_UNICAST_HOPS)"); 926 927 if (hoplimit != -1 && 928 setsockopt(dummy, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, 929 (void *)&hoplimit, sizeof(hoplimit))) 930 err(1, "UDP setsockopt(IPV6_MULTICAST_HOPS)"); 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)"); 936 937 if (connect(dummy, (struct sockaddr *)&src, len) < 0) 938 err(1, "UDP connect"); 939 940 if (getsockname(dummy, (struct sockaddr *)&src, &len) < 0) 941 err(1, "getsockname"); 942 943 close(dummy); 944 } 945 946 #if defined(SO_SNDBUF) && defined(SO_RCVBUF) 947 if (sockbufsize) { 948 if (datalen > sockbufsize) 949 warnx("you need -b to increase socket buffer size"); 950 if (setsockopt(s, SOL_SOCKET, SO_SNDBUF, &sockbufsize, 951 sizeof(sockbufsize)) < 0) 952 err(1, "setsockopt(SO_SNDBUF)"); 953 if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, &sockbufsize, 954 sizeof(sockbufsize)) < 0) 955 err(1, "setsockopt(SO_RCVBUF)"); 956 } 957 else { 958 if (datalen > 8 * 1024) /*XXX*/ 959 warnx("you need -b to increase socket buffer size"); 960 /* 961 * When pinging the broadcast address, you can get a lot of 962 * answers. Doing something so evil is useful if you are trying 963 * to stress the ethernet, or just want to fill the arp cache 964 * to get some stuff for /etc/ethers. 965 */ 966 hold = 48 * 1024; 967 setsockopt(s, SOL_SOCKET, SO_RCVBUF, (char *)&hold, 968 sizeof(hold)); 969 } 970 #endif 971 972 optval = 1; 973 #ifndef USE_SIN6_SCOPE_ID 974 #ifdef IPV6_RECVPKTINFO 975 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPKTINFO, &optval, 976 sizeof(optval)) < 0) 977 warn("setsockopt(IPV6_RECVPKTINFO)"); /* XXX err? */ 978 #else /* old adv. API */ 979 if (setsockopt(s, IPPROTO_IPV6, IPV6_PKTINFO, &optval, 980 sizeof(optval)) < 0) 981 warn("setsockopt(IPV6_PKTINFO)"); /* XXX err? */ 982 #endif 983 #endif /* USE_SIN6_SCOPE_ID */ 984 #ifdef IPV6_RECVHOPLIMIT 985 if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, &optval, 986 sizeof(optval)) < 0) 987 warn("setsockopt(IPV6_RECVHOPLIMIT)"); /* XXX err? */ 988 #else /* old adv. API */ 989 if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPLIMIT, &optval, 990 sizeof(optval)) < 0) 991 warn("setsockopt(IPV6_HOPLIMIT)"); /* XXX err? */ 992 #endif 993 994 printf("PING6(%lu=40+8+%lu bytes) ", (unsigned long)(40 + pingerlen()), 995 (unsigned long)(pingerlen() - 8)); 996 printf("%s --> ", pr_addr((struct sockaddr *)&src, sizeof(src))); 997 printf("%s\n", pr_addr((struct sockaddr *)&dst, sizeof(dst))); 998 999 while (preload--) /* Fire off them quickies. */ 1000 (void)pinger(); 1001 1002 (void)signal(SIGINT, onsignal); 1003 #ifdef SIGINFO 1004 (void)signal(SIGINFO, onsignal); 1005 #endif 1006 1007 if ((options & F_FLOOD) == 0) { 1008 (void)signal(SIGALRM, onsignal); 1009 itimer.it_interval = interval; 1010 itimer.it_value = interval; 1011 (void)setitimer(ITIMER_REAL, &itimer, NULL); 1012 if (ntransmitted == 0) 1013 retransmit(); 1014 } 1015 1016 seenalrm = seenint = 0; 1017 #ifdef SIGINFO 1018 seeninfo = 0; 1019 #endif 1020 1021 for (;;) { 1022 struct msghdr m; 1023 struct cmsghdr *cm; 1024 u_char buf[1024]; 1025 struct iovec iov[2]; 1026 1027 /* signal handling */ 1028 if (seenalrm) { 1029 retransmit(); 1030 seenalrm = 0; 1031 continue; 1032 } 1033 if (seenint) { 1034 onint(SIGINT); 1035 seenint = 0; 1036 continue; 1037 } 1038 #ifdef SIGINFO 1039 if (seeninfo) { 1040 summary(); 1041 seeninfo = 0; 1042 continue; 1043 } 1044 #endif 1045 1046 if (options & F_FLOOD) { 1047 (void)pinger(); 1048 timeout = 10; 1049 } else { 1050 timeout = INFTIM; 1051 } 1052 fdmaskp[0].fd = s; 1053 fdmaskp[0].events = POLLIN; 1054 cc = poll(fdmaskp, 1, timeout); 1055 if (cc < 0) { 1056 if (errno != EINTR) { 1057 warn("poll"); 1058 sleep(1); 1059 } 1060 continue; 1061 } else if (cc == 0) 1062 continue; 1063 1064 m.msg_name = (caddr_t)&from; 1065 m.msg_namelen = sizeof(from); 1066 memset(&iov, 0, sizeof(iov)); 1067 iov[0].iov_base = (caddr_t)packet; 1068 iov[0].iov_len = packlen; 1069 m.msg_iov = iov; 1070 m.msg_iovlen = 1; 1071 cm = (struct cmsghdr *)buf; 1072 m.msg_control = (caddr_t)buf; 1073 m.msg_controllen = sizeof(buf); 1074 1075 cc = recvmsg(s, &m, 0); 1076 if (cc < 0) { 1077 if (errno != EINTR) { 1078 warn("recvmsg"); 1079 sleep(1); 1080 } 1081 continue; 1082 } else if (cc == 0) { 1083 int mtu; 1084 1085 /* 1086 * receive control messages only. Process the 1087 * exceptions (currently the only possiblity is 1088 * a path MTU notification.) 1089 */ 1090 if ((mtu = get_pathmtu(&m)) > 0) { 1091 if ((options & F_VERBOSE) != 0) { 1092 printf("new path MTU (%d) is " 1093 "notified\n", mtu); 1094 } 1095 } 1096 continue; 1097 } else { 1098 /* 1099 * an ICMPv6 message (probably an echoreply) arrived. 1100 */ 1101 pr_pack(packet, cc, &m); 1102 } 1103 if (npackets && nreceived >= npackets) 1104 break; 1105 } 1106 summary(); 1107 exit(nreceived == 0); 1108 } 1109 1110 void 1111 onsignal(int sig) 1112 { 1113 1114 switch (sig) { 1115 case SIGALRM: 1116 seenalrm++; 1117 break; 1118 case SIGINT: 1119 seenint++; 1120 break; 1121 #ifdef SIGINFO 1122 case SIGINFO: 1123 seeninfo++; 1124 break; 1125 #endif 1126 } 1127 } 1128 1129 /* 1130 * retransmit -- 1131 * This routine transmits another ping6. 1132 */ 1133 void 1134 retransmit(void) 1135 { 1136 struct itimerval itimer; 1137 1138 if (pinger() == 0) 1139 return; 1140 1141 /* 1142 * If we're not transmitting any more packets, change the timer 1143 * to wait two round-trip times if we've received any packets or 1144 * ten seconds if we haven't. 1145 */ 1146 #define MAXWAIT 10 1147 if (nreceived) { 1148 itimer.it_value.tv_sec = 2 * tmax / 1000; 1149 if (itimer.it_value.tv_sec == 0) 1150 itimer.it_value.tv_sec = 1; 1151 } else 1152 itimer.it_value.tv_sec = MAXWAIT; 1153 itimer.it_interval.tv_sec = 0; 1154 itimer.it_interval.tv_usec = 0; 1155 itimer.it_value.tv_usec = 0; 1156 1157 (void)signal(SIGALRM, onint); 1158 (void)setitimer(ITIMER_REAL, &itimer, NULL); 1159 } 1160 1161 /* 1162 * pinger -- 1163 * Compose and transmit an ICMP ECHO REQUEST packet. The IP packet 1164 * will be added on by the kernel. The ID field is our UNIX process ID, 1165 * and the sequence number is an ascending integer. The first 8 bytes 1166 * of the data portion are used to hold a UNIX "timeval" struct in VAX 1167 * byte-order, to compute the round-trip time. 1168 */ 1169 size_t 1170 pingerlen(void) 1171 { 1172 size_t l; 1173 1174 if (options & F_FQDN) 1175 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr); 1176 else if (options & F_FQDNOLD) 1177 l = ICMP6_NIQLEN; 1178 else if (options & F_NODEADDR) 1179 l = ICMP6_NIQLEN + sizeof(dst.sin6_addr); 1180 else if (options & F_SUPTYPES) 1181 l = ICMP6_NIQLEN; 1182 else 1183 l = ICMP6ECHOLEN + datalen; 1184 1185 return l; 1186 } 1187 1188 int 1189 pinger(void) 1190 { 1191 struct icmp6_hdr *icp; 1192 struct iovec iov[2]; 1193 int i, cc; 1194 struct icmp6_nodeinfo *nip; 1195 int seq; 1196 1197 if (npackets && ntransmitted >= npackets) 1198 return(-1); /* no more transmission */ 1199 1200 icp = (struct icmp6_hdr *)outpack; 1201 nip = (struct icmp6_nodeinfo *)outpack; 1202 memset(icp, 0, sizeof(*icp)); 1203 icp->icmp6_cksum = 0; 1204 seq = ntransmitted++; 1205 CLR(seq % mx_dup_ck); 1206 1207 if (options & F_FQDN) { 1208 icp->icmp6_type = ICMP6_NI_QUERY; 1209 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6; 1210 nip->ni_qtype = htons(NI_QTYPE_FQDN); 1211 nip->ni_flags = htons(0); 1212 1213 memcpy(nip->icmp6_ni_nonce, nonce, 1214 sizeof(nip->icmp6_ni_nonce)); 1215 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq); 1216 1217 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr, 1218 sizeof(dst.sin6_addr)); 1219 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr); 1220 datalen = 0; 1221 } else if (options & F_FQDNOLD) { 1222 /* packet format in 03 draft - no Subject data on queries */ 1223 icp->icmp6_type = ICMP6_NI_QUERY; 1224 icp->icmp6_code = 0; /* code field is always 0 */ 1225 nip->ni_qtype = htons(NI_QTYPE_FQDN); 1226 nip->ni_flags = htons(0); 1227 1228 memcpy(nip->icmp6_ni_nonce, nonce, 1229 sizeof(nip->icmp6_ni_nonce)); 1230 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq); 1231 1232 cc = ICMP6_NIQLEN; 1233 datalen = 0; 1234 } else if (options & F_NODEADDR) { 1235 icp->icmp6_type = ICMP6_NI_QUERY; 1236 icp->icmp6_code = ICMP6_NI_SUBJ_IPV6; 1237 nip->ni_qtype = htons(NI_QTYPE_NODEADDR); 1238 nip->ni_flags = naflags; 1239 1240 memcpy(nip->icmp6_ni_nonce, nonce, 1241 sizeof(nip->icmp6_ni_nonce)); 1242 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq); 1243 1244 memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr, 1245 sizeof(dst.sin6_addr)); 1246 cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr); 1247 datalen = 0; 1248 } else if (options & F_SUPTYPES) { 1249 icp->icmp6_type = ICMP6_NI_QUERY; 1250 icp->icmp6_code = ICMP6_NI_SUBJ_FQDN; /*empty*/ 1251 nip->ni_qtype = htons(NI_QTYPE_SUPTYPES); 1252 /* we support compressed bitmap */ 1253 nip->ni_flags = NI_SUPTYPE_FLAG_COMPRESS; 1254 1255 memcpy(nip->icmp6_ni_nonce, nonce, 1256 sizeof(nip->icmp6_ni_nonce)); 1257 *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq); 1258 cc = ICMP6_NIQLEN; 1259 datalen = 0; 1260 } else { 1261 icp->icmp6_type = ICMP6_ECHO_REQUEST; 1262 icp->icmp6_code = 0; 1263 icp->icmp6_id = htons(ident); 1264 icp->icmp6_seq = ntohs(seq); 1265 if (timing) { 1266 struct timeval tv; 1267 struct tv32 *tv32; 1268 (void)gettimeofday(&tv, NULL); 1269 tv32 = (struct tv32 *)&outpack[ICMP6ECHOLEN]; 1270 tv32->tv32_sec = htonl(tv.tv_sec); 1271 tv32->tv32_usec = htonl(tv.tv_usec); 1272 } 1273 cc = ICMP6ECHOLEN + datalen; 1274 } 1275 1276 #ifdef DIAGNOSTIC 1277 if (pingerlen() != cc) 1278 errx(1, "internal error; length mismatch"); 1279 #endif 1280 1281 smsghdr.msg_name = (caddr_t)&dst; 1282 smsghdr.msg_namelen = sizeof(dst); 1283 memset(&iov, 0, sizeof(iov)); 1284 iov[0].iov_base = (caddr_t)outpack; 1285 iov[0].iov_len = cc; 1286 smsghdr.msg_iov = iov; 1287 smsghdr.msg_iovlen = 1; 1288 1289 i = sendmsg(s, &smsghdr, 0); 1290 1291 if (i < 0 || i != cc) { 1292 if (i < 0) 1293 warn("sendmsg"); 1294 (void)printf("ping6: wrote %s %d chars, ret=%d\n", 1295 hostname, cc, i); 1296 } 1297 if (!(options & F_QUIET) && options & F_FLOOD) 1298 (void)write(STDOUT_FILENO, &DOT, 1); 1299 1300 return(0); 1301 } 1302 1303 int 1304 myechoreply(const struct icmp6_hdr *icp) 1305 { 1306 if (ntohs(icp->icmp6_id) == ident) 1307 return 1; 1308 else 1309 return 0; 1310 } 1311 1312 int 1313 mynireply(const struct icmp6_nodeinfo *nip) 1314 { 1315 if (memcmp(nip->icmp6_ni_nonce + sizeof(u_int16_t), 1316 nonce + sizeof(u_int16_t), 1317 sizeof(nonce) - sizeof(u_int16_t)) == 0) 1318 return 1; 1319 else 1320 return 0; 1321 } 1322 1323 char * 1324 dnsdecode(const u_char **sp, const u_char *ep, const u_char *base, char *buf, 1325 size_t bufsiz) 1326 { 1327 int i; 1328 const u_char *cp; 1329 char cresult[MAXDNAME + 1]; 1330 const u_char *comp; 1331 int l; 1332 1333 i = 0; /* XXXGCC -Wuninitialized [sun2] */ 1334 1335 cp = *sp; 1336 *buf = '\0'; 1337 1338 if (cp >= ep) 1339 return NULL; 1340 while (cp < ep) { 1341 i = *cp; 1342 if (i == 0 || cp != *sp) { 1343 if (strlcat((char *)buf, ".", bufsiz) >= bufsiz) 1344 return NULL; /*result overrun*/ 1345 } 1346 if (i == 0) 1347 break; 1348 cp++; 1349 1350 if ((i & 0xc0) == 0xc0 && cp - base > (i & 0x3f)) { 1351 /* DNS compression */ 1352 if (!base) 1353 return NULL; 1354 1355 comp = base + (i & 0x3f); 1356 if (dnsdecode(&comp, cp, base, cresult, 1357 sizeof(cresult)) == NULL) 1358 return NULL; 1359 if (strlcat(buf, cresult, bufsiz) >= bufsiz) 1360 return NULL; /*result overrun*/ 1361 break; 1362 } else if ((i & 0x3f) == i) { 1363 if (i > ep - cp) 1364 return NULL; /*source overrun*/ 1365 while (i-- > 0 && cp < ep) { 1366 l = snprintf(cresult, sizeof(cresult), 1367 isprint(*cp) ? "%c" : "\\%03o", *cp & 0xff); 1368 if (l >= (int)sizeof(cresult) || l < 0) 1369 return NULL; 1370 if (strlcat(buf, cresult, bufsiz) >= bufsiz) 1371 return NULL; /*result overrun*/ 1372 cp++; 1373 } 1374 } else 1375 return NULL; /*invalid label*/ 1376 } 1377 if (i != 0) 1378 return NULL; /*not terminated*/ 1379 cp++; 1380 *sp = cp; 1381 return buf; 1382 } 1383 1384 /* 1385 * pr_pack -- 1386 * Print out the packet, if it came from us. This logic is necessary 1387 * because ALL readers of the ICMP socket get a copy of ALL ICMP packets 1388 * which arrive ('tis only fair). This permits multiple copies of this 1389 * program to be run without having intermingled output (or statistics!). 1390 */ 1391 void 1392 pr_pack(u_char *buf, int cc, struct msghdr *mhdr) 1393 { 1394 #define safeputc(c) printf((isprint((c)) ? "%c" : "\\%03o"), c) 1395 struct icmp6_hdr *icp; 1396 struct icmp6_nodeinfo *ni; 1397 int i; 1398 int hoplim; 1399 struct sockaddr *from; 1400 int fromlen; 1401 u_char *cp = NULL, *dp, *end = buf + cc; 1402 struct in6_pktinfo *pktinfo = NULL; 1403 struct timeval tv, tp; 1404 struct tv32 *tpp; 1405 double triptime = 0; 1406 int dupflag; 1407 size_t off; 1408 int oldfqdn; 1409 u_int16_t seq; 1410 char dnsname[MAXDNAME + 1]; 1411 1412 (void)gettimeofday(&tv, NULL); 1413 1414 if (!mhdr || !mhdr->msg_name || 1415 mhdr->msg_namelen != sizeof(struct sockaddr_in6) || 1416 ((struct sockaddr *)mhdr->msg_name)->sa_family != AF_INET6) { 1417 if (options & F_VERBOSE) 1418 warnx("invalid peername"); 1419 return; 1420 } 1421 from = (struct sockaddr *)mhdr->msg_name; 1422 fromlen = mhdr->msg_namelen; 1423 if (cc < (int)sizeof(struct icmp6_hdr)) { 1424 if (options & F_VERBOSE) 1425 warnx("packet too short (%d bytes) from %s", cc, 1426 pr_addr(from, fromlen)); 1427 return; 1428 } 1429 icp = (struct icmp6_hdr *)buf; 1430 ni = (struct icmp6_nodeinfo *)buf; 1431 off = 0; 1432 1433 if ((hoplim = get_hoplim(mhdr)) == -1) { 1434 warnx("failed to get receiving hop limit"); 1435 return; 1436 } 1437 if ((pktinfo = get_rcvpktinfo(mhdr)) == NULL) { 1438 warnx("failed to get receiving packet information"); 1439 return; 1440 } 1441 1442 if (icp->icmp6_type == ICMP6_ECHO_REPLY && myechoreply(icp)) { 1443 seq = ntohs(icp->icmp6_seq); 1444 ++nreceived; 1445 if (timing) { 1446 tpp = (struct tv32 *)(icp + 1); 1447 tp.tv_sec = ntohl(tpp->tv32_sec); 1448 tp.tv_usec = ntohl(tpp->tv32_usec); 1449 tvsub(&tv, &tp); 1450 triptime = ((double)tv.tv_sec) * 1000.0 + 1451 ((double)tv.tv_usec) / 1000.0; 1452 tsum += triptime; 1453 tsumsq += triptime * triptime; 1454 if (triptime < tmin) 1455 tmin = triptime; 1456 if (triptime > tmax) 1457 tmax = triptime; 1458 } 1459 1460 if (TST(seq % mx_dup_ck)) { 1461 ++nrepeats; 1462 --nreceived; 1463 dupflag = 1; 1464 } else { 1465 SET(seq % mx_dup_ck); 1466 dupflag = 0; 1467 } 1468 1469 if (options & F_QUIET) 1470 return; 1471 1472 if (options & F_FLOOD) 1473 (void)write(STDOUT_FILENO, &BSPACE, 1); 1474 else { 1475 (void)printf("%d bytes from %s, icmp_seq=%u", cc, 1476 pr_addr(from, fromlen), seq); 1477 (void)printf(" hlim=%d", hoplim); 1478 if ((options & F_VERBOSE) != 0) { 1479 struct sockaddr_in6 dstsa; 1480 1481 memset(&dstsa, 0, sizeof(dstsa)); 1482 dstsa.sin6_family = AF_INET6; 1483 #ifdef SIN6_LEN 1484 dstsa.sin6_len = sizeof(dstsa); 1485 #endif 1486 dstsa.sin6_scope_id = pktinfo->ipi6_ifindex; 1487 dstsa.sin6_addr = pktinfo->ipi6_addr; 1488 (void)printf(" dst=%s", 1489 pr_addr((struct sockaddr *)&dstsa, 1490 sizeof(dstsa))); 1491 } 1492 if (timing) 1493 (void)printf(" time=%.3f ms", triptime); 1494 if (dupflag) 1495 (void)printf("(DUP!)"); 1496 /* check the data */ 1497 cp = buf + off + ICMP6ECHOLEN + ICMP6ECHOTMLEN; 1498 dp = outpack + ICMP6ECHOLEN + ICMP6ECHOTMLEN; 1499 for (i = 8; cp < end; ++i, ++cp, ++dp) { 1500 if (*cp != *dp) { 1501 (void)printf("\nwrong data byte #%d should be 0x%x but was 0x%x", i, *dp, *cp); 1502 break; 1503 } 1504 } 1505 } 1506 } else if (icp->icmp6_type == ICMP6_NI_REPLY && mynireply(ni)) { 1507 seq = ntohs(*(u_int16_t *)ni->icmp6_ni_nonce); 1508 ++nreceived; 1509 if (TST(seq % mx_dup_ck)) { 1510 ++nrepeats; 1511 --nreceived; 1512 dupflag = 1; 1513 } else { 1514 SET(seq % mx_dup_ck); 1515 dupflag = 0; 1516 } 1517 1518 if (options & F_QUIET) 1519 return; 1520 1521 (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen)); 1522 1523 switch (ntohs(ni->ni_code)) { 1524 case ICMP6_NI_SUCCESS: 1525 break; 1526 case ICMP6_NI_REFUSED: 1527 printf("refused, type 0x%x", ntohs(ni->ni_type)); 1528 goto fqdnend; 1529 case ICMP6_NI_UNKNOWN: 1530 printf("unknown, type 0x%x", ntohs(ni->ni_type)); 1531 goto fqdnend; 1532 default: 1533 printf("unknown code 0x%x, type 0x%x", 1534 ntohs(ni->ni_code), ntohs(ni->ni_type)); 1535 goto fqdnend; 1536 } 1537 1538 switch (ntohs(ni->ni_qtype)) { 1539 case NI_QTYPE_NOOP: 1540 printf("NodeInfo NOOP"); 1541 break; 1542 case NI_QTYPE_SUPTYPES: 1543 pr_suptypes(ni, end - (u_char *)ni); 1544 break; 1545 case NI_QTYPE_NODEADDR: 1546 pr_nodeaddr(ni, end - (u_char *)ni); 1547 break; 1548 case NI_QTYPE_FQDN: 1549 default: /* XXX: for backward compatibility */ 1550 cp = (u_char *)ni + ICMP6_NIRLEN; 1551 if (buf[off + ICMP6_NIRLEN] == 1552 cc - off - ICMP6_NIRLEN - 1) 1553 oldfqdn = 1; 1554 else 1555 oldfqdn = 0; 1556 if (oldfqdn) { 1557 cp++; /* skip length */ 1558 while (cp < end) { 1559 safeputc(*cp & 0xff); 1560 cp++; 1561 } 1562 } else { 1563 i = 0; 1564 while (cp < end) { 1565 if (dnsdecode((const u_char **)&cp, end, 1566 (const u_char *)(ni + 1), dnsname, 1567 sizeof(dnsname)) == NULL) { 1568 printf("???"); 1569 break; 1570 } 1571 /* 1572 * name-lookup special handling for 1573 * truncated name 1574 */ 1575 if (cp + 1 <= end && !*cp && 1576 strlen(dnsname) > 0) { 1577 dnsname[strlen(dnsname) - 1] = '\0'; 1578 cp++; 1579 } 1580 printf("%s%s", i > 0 ? "," : "", 1581 dnsname); 1582 } 1583 } 1584 if (options & F_VERBOSE) { 1585 int32_t ttl; 1586 int comma = 0; 1587 1588 (void)printf(" ("); /*)*/ 1589 1590 switch (ni->ni_code) { 1591 case ICMP6_NI_REFUSED: 1592 (void)printf("refused"); 1593 comma++; 1594 break; 1595 case ICMP6_NI_UNKNOWN: 1596 (void)printf("unknown qtype"); 1597 comma++; 1598 break; 1599 } 1600 1601 if ((end - (u_char *)ni) < ICMP6_NIRLEN) { 1602 /* case of refusion, unknown */ 1603 /*(*/ 1604 putchar(')'); 1605 goto fqdnend; 1606 } 1607 ttl = (int32_t)ntohl(*(u_long *)&buf[off+ICMP6ECHOLEN+8]); 1608 if (comma) 1609 printf(","); 1610 if (!(ni->ni_flags & NI_FQDN_FLAG_VALIDTTL)) { 1611 (void)printf("TTL=%d:meaningless", 1612 (int)ttl); 1613 } else { 1614 if (ttl < 0) { 1615 (void)printf("TTL=%d:invalid", 1616 ttl); 1617 } else 1618 (void)printf("TTL=%d", ttl); 1619 } 1620 comma++; 1621 1622 if (oldfqdn) { 1623 if (comma) 1624 printf(","); 1625 printf("03 draft"); 1626 comma++; 1627 } else { 1628 cp = (u_char *)ni + ICMP6_NIRLEN; 1629 if (cp == end) { 1630 if (comma) 1631 printf(","); 1632 printf("no name"); 1633 comma++; 1634 } 1635 } 1636 1637 if (buf[off + ICMP6_NIRLEN] != 1638 cc - off - ICMP6_NIRLEN - 1 && oldfqdn) { 1639 if (comma) 1640 printf(","); 1641 (void)printf("invalid namelen:%d/%lu", 1642 buf[off + ICMP6_NIRLEN], 1643 (u_long)cc - off - ICMP6_NIRLEN - 1); 1644 comma++; 1645 } 1646 /*(*/ 1647 putchar(')'); 1648 } 1649 fqdnend: 1650 ; 1651 } 1652 } else { 1653 /* We've got something other than an ECHOREPLY */ 1654 if (!(options & F_VERBOSE)) 1655 return; 1656 (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen)); 1657 pr_icmph(icp, end); 1658 } 1659 1660 if (!(options & F_FLOOD)) { 1661 (void)putchar('\n'); 1662 if (options & F_VERBOSE) 1663 pr_exthdrs(mhdr); 1664 (void)fflush(stdout); 1665 } 1666 #undef safeputc 1667 } 1668 1669 void 1670 pr_exthdrs(struct msghdr *mhdr) 1671 { 1672 struct cmsghdr *cm; 1673 1674 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm; 1675 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) { 1676 if (cm->cmsg_level != IPPROTO_IPV6) 1677 continue; 1678 1679 switch (cm->cmsg_type) { 1680 case IPV6_HOPOPTS: 1681 printf(" HbH Options: "); 1682 pr_ip6opt(CMSG_DATA(cm)); 1683 break; 1684 case IPV6_DSTOPTS: 1685 #ifdef IPV6_RTHDRDSTOPTS 1686 case IPV6_RTHDRDSTOPTS: 1687 #endif 1688 printf(" Dst Options: "); 1689 pr_ip6opt(CMSG_DATA(cm)); 1690 break; 1691 case IPV6_RTHDR: 1692 printf(" Routing: "); 1693 pr_rthdr(CMSG_DATA(cm)); 1694 break; 1695 } 1696 } 1697 } 1698 1699 void 1700 pr_ip6opt(void *extbuf) 1701 { 1702 struct ip6_hbh *ext; 1703 int currentlen; 1704 u_int8_t type; 1705 size_t extlen; 1706 socklen_t len; 1707 void *databuf; 1708 size_t offset; 1709 u_int16_t value2; 1710 u_int32_t value4; 1711 1712 ext = (struct ip6_hbh *)extbuf; 1713 extlen = (ext->ip6h_len + 1) * 8; 1714 printf("nxt %u, len %u (%lu bytes)\n", ext->ip6h_nxt, 1715 (unsigned int)ext->ip6h_len, (unsigned long)extlen); 1716 1717 currentlen = 0; 1718 while (1) { 1719 currentlen = inet6_opt_next(extbuf, extlen, currentlen, 1720 &type, &len, &databuf); 1721 if (currentlen == -1) 1722 break; 1723 switch (type) { 1724 /* 1725 * Note that inet6_opt_next automatically skips any padding 1726 * optins. 1727 */ 1728 case IP6OPT_JUMBO: 1729 offset = 0; 1730 offset = inet6_opt_get_val(databuf, offset, 1731 &value4, sizeof(value4)); 1732 printf(" Jumbo Payload Opt: Length %u\n", 1733 (u_int32_t)ntohl(value4)); 1734 break; 1735 case IP6OPT_ROUTER_ALERT: 1736 offset = 0; 1737 offset = inet6_opt_get_val(databuf, offset, 1738 &value2, sizeof(value2)); 1739 printf(" Router Alert Opt: Type %u\n", 1740 ntohs(value2)); 1741 break; 1742 default: 1743 printf(" Received Opt %u len %lu\n", 1744 type, (unsigned long)len); 1745 break; 1746 } 1747 } 1748 return; 1749 } 1750 1751 void 1752 pr_rthdr(void *extbuf) 1753 { 1754 struct in6_addr *in6; 1755 char ntopbuf[INET6_ADDRSTRLEN]; 1756 struct ip6_rthdr *rh = (struct ip6_rthdr *)extbuf; 1757 int i, segments; 1758 1759 /* print fixed part of the header */ 1760 printf("nxt %u, len %u (%d bytes), type %u, ", rh->ip6r_nxt, 1761 rh->ip6r_len, (rh->ip6r_len + 1) << 3, rh->ip6r_type); 1762 if ((segments = inet6_rth_segments(extbuf)) >= 0) 1763 printf("%d segments, ", segments); 1764 else 1765 printf("segments unknown, "); 1766 printf("%d left\n", rh->ip6r_segleft); 1767 1768 for (i = 0; i < segments; i++) { 1769 in6 = inet6_rth_getaddr(extbuf, i); 1770 if (in6 == NULL) 1771 printf(" [%d]<NULL>\n", i); 1772 else { 1773 if (!inet_ntop(AF_INET6, in6, ntopbuf, 1774 sizeof(ntopbuf))) 1775 strlcpy(ntopbuf, "?", sizeof(ntopbuf)); 1776 printf(" [%d]%s\n", i, ntopbuf); 1777 } 1778 } 1779 1780 return; 1781 1782 } 1783 1784 int 1785 pr_bitrange(u_int32_t v, int soff, int ii) 1786 { 1787 int off; 1788 int i; 1789 1790 off = 0; 1791 while (off < 32) { 1792 /* shift till we have 0x01 */ 1793 if ((v & 0x01) == 0) { 1794 if (ii > 1) 1795 printf("-%u", soff + off - 1); 1796 ii = 0; 1797 switch (v & 0x0f) { 1798 case 0x00: 1799 v >>= 4; 1800 off += 4; 1801 continue; 1802 case 0x08: 1803 v >>= 3; 1804 off += 3; 1805 continue; 1806 case 0x04: case 0x0c: 1807 v >>= 2; 1808 off += 2; 1809 continue; 1810 default: 1811 v >>= 1; 1812 off += 1; 1813 continue; 1814 } 1815 } 1816 1817 /* we have 0x01 with us */ 1818 for (i = 0; i < 32 - off; i++) { 1819 if ((v & (0x01 << i)) == 0) 1820 break; 1821 } 1822 if (!ii) 1823 printf(" %u", soff + off); 1824 ii += i; 1825 v >>= i; off += i; 1826 } 1827 return ii; 1828 } 1829 1830 void 1831 pr_suptypes(struct icmp6_nodeinfo *ni /* ni->qtype must be SUPTYPES */, 1832 size_t nilen) 1833 { 1834 size_t clen; 1835 u_int32_t v; 1836 const u_char *cp, *end; 1837 u_int16_t cur; 1838 struct cbit { 1839 u_int16_t words; /*32bit count*/ 1840 u_int16_t skip; 1841 } cbit; 1842 #define MAXQTYPES (1 << 16) 1843 size_t off; 1844 int b; 1845 1846 cp = (u_char *)(ni + 1); 1847 end = ((u_char *)ni) + nilen; 1848 cur = 0; 1849 b = 0; 1850 1851 printf("NodeInfo Supported Qtypes"); 1852 if (options & F_VERBOSE) { 1853 if (ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) 1854 printf(", compressed bitmap"); 1855 else 1856 printf(", raw bitmap"); 1857 } 1858 1859 while (cp < end) { 1860 clen = (size_t)(end - cp); 1861 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) == 0) { 1862 if (clen == 0 || clen > MAXQTYPES / 8 || 1863 clen % sizeof(v)) { 1864 printf("???"); 1865 return; 1866 } 1867 } else { 1868 if (clen < sizeof(cbit) || clen % sizeof(v)) 1869 return; 1870 memcpy(&cbit, cp, sizeof(cbit)); 1871 if (sizeof(cbit) + ntohs(cbit.words) * sizeof(v) > 1872 clen) 1873 return; 1874 cp += sizeof(cbit); 1875 clen = ntohs(cbit.words) * sizeof(v); 1876 if (cur + clen * 8 + (u_long)ntohs(cbit.skip) * 32 > 1877 MAXQTYPES) 1878 return; 1879 } 1880 1881 for (off = 0; off < clen; off += sizeof(v)) { 1882 memcpy(&v, cp + off, sizeof(v)); 1883 v = (u_int32_t)ntohl(v); 1884 b = pr_bitrange(v, (int)(cur + off * 8), b); 1885 } 1886 /* flush the remaining bits */ 1887 b = pr_bitrange(0, (int)(cur + off * 8), b); 1888 1889 cp += clen; 1890 cur += clen * 8; 1891 if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) != 0) 1892 cur += ntohs(cbit.skip) * 32; 1893 } 1894 } 1895 1896 void 1897 pr_nodeaddr(struct icmp6_nodeinfo *ni, /* ni->qtype must be NODEADDR */ 1898 int nilen) 1899 { 1900 u_char *cp = (u_char *)(ni + 1); 1901 char ntop_buf[INET6_ADDRSTRLEN]; 1902 int withttl = 0; 1903 1904 nilen -= sizeof(struct icmp6_nodeinfo); 1905 1906 if (options & F_VERBOSE) { 1907 switch (ni->ni_code) { 1908 case ICMP6_NI_REFUSED: 1909 (void)printf("refused"); 1910 break; 1911 case ICMP6_NI_UNKNOWN: 1912 (void)printf("unknown qtype"); 1913 break; 1914 } 1915 if (ni->ni_flags & NI_NODEADDR_FLAG_TRUNCATE) 1916 (void)printf(" truncated"); 1917 } 1918 putchar('\n'); 1919 if (nilen <= 0) 1920 printf(" no address\n"); 1921 1922 /* 1923 * In icmp-name-lookups 05 and later, TTL of each returned address 1924 * is contained in the resposne. We try to detect the version 1925 * by the length of the data, but note that the detection algorithm 1926 * is incomplete. We assume the latest draft by default. 1927 */ 1928 if (nilen % (sizeof(u_int32_t) + sizeof(struct in6_addr)) == 0) 1929 withttl = 1; 1930 while (nilen > 0) { 1931 u_int32_t ttl = 0; 1932 1933 if (withttl) { 1934 /* XXX: alignment? */ 1935 ttl = (u_int32_t)ntohl(*(u_int32_t *)cp); 1936 cp += sizeof(u_int32_t); 1937 nilen -= sizeof(u_int32_t); 1938 } 1939 1940 if (inet_ntop(AF_INET6, cp, ntop_buf, sizeof(ntop_buf)) == 1941 NULL) 1942 strlcpy(ntop_buf, "?", sizeof(ntop_buf)); 1943 printf(" %s", ntop_buf); 1944 if (withttl) { 1945 if (ttl == 0xffffffff) { 1946 /* 1947 * XXX: can this convention be applied to all 1948 * type of TTL (i.e. non-ND TTL)? 1949 */ 1950 printf("(TTL=infty)"); 1951 } 1952 else 1953 printf("(TTL=%u)", ttl); 1954 } 1955 putchar('\n'); 1956 1957 nilen -= sizeof(struct in6_addr); 1958 cp += sizeof(struct in6_addr); 1959 } 1960 } 1961 1962 int 1963 get_hoplim(struct msghdr *mhdr) 1964 { 1965 struct cmsghdr *cm; 1966 1967 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm; 1968 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) { 1969 if (cm->cmsg_len == 0) 1970 return(-1); 1971 1972 if (cm->cmsg_level == IPPROTO_IPV6 && 1973 cm->cmsg_type == IPV6_HOPLIMIT && 1974 cm->cmsg_len == CMSG_LEN(sizeof(int))) 1975 return(*(int *)CMSG_DATA(cm)); 1976 } 1977 1978 return(-1); 1979 } 1980 1981 struct in6_pktinfo * 1982 get_rcvpktinfo(struct msghdr *mhdr) 1983 { 1984 struct cmsghdr *cm; 1985 1986 for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm; 1987 cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) { 1988 if (cm->cmsg_len == 0) 1989 return(NULL); 1990 1991 if (cm->cmsg_level == IPPROTO_IPV6 && 1992 cm->cmsg_type == IPV6_PKTINFO && 1993 cm->cmsg_len == CMSG_LEN(sizeof(struct in6_pktinfo))) 1994 return((struct in6_pktinfo *)CMSG_DATA(cm)); 1995 } 1996 1997 return(NULL); 1998 } 1999 2000 int 2001 get_pathmtu(struct msghdr *mhdr) 2002 { 2003 #ifdef IPV6_RECVPATHMTU 2004 struct cmsghdr *cm; 2005 struct ip6_mtuinfo *mtuctl = NULL; 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(0); 2011 2012 if (cm->cmsg_level == IPPROTO_IPV6 && 2013 cm->cmsg_type == IPV6_PATHMTU && 2014 cm->cmsg_len == CMSG_LEN(sizeof(struct ip6_mtuinfo))) { 2015 mtuctl = (struct ip6_mtuinfo *)CMSG_DATA(cm); 2016 2017 /* 2018 * If the notified destination is different from 2019 * the one we are pinging, just ignore the info. 2020 * We check the scope ID only when both notified value 2021 * and our own value have non-0 values, because we may 2022 * have used the default scope zone ID for sending, 2023 * in which case the scope ID value is 0. 2024 */ 2025 if (!IN6_ARE_ADDR_EQUAL(&mtuctl->ip6m_addr.sin6_addr, 2026 &dst.sin6_addr) || 2027 (mtuctl->ip6m_addr.sin6_scope_id && 2028 dst.sin6_scope_id && 2029 mtuctl->ip6m_addr.sin6_scope_id != 2030 dst.sin6_scope_id)) { 2031 if ((options & F_VERBOSE) != 0) { 2032 printf("path MTU for %s is notified. " 2033 "(ignored)\n", 2034 pr_addr((struct sockaddr *)&mtuctl->ip6m_addr, 2035 sizeof(mtuctl->ip6m_addr))); 2036 } 2037 return(0); 2038 } 2039 2040 /* 2041 * Ignore an invalid MTU. XXX: can we just believe 2042 * the kernel check? 2043 */ 2044 if (mtuctl->ip6m_mtu < IPV6_MMTU) 2045 return(0); 2046 2047 /* notification for our destination. return the MTU. */ 2048 return((int)mtuctl->ip6m_mtu); 2049 } 2050 } 2051 #endif 2052 return(0); 2053 } 2054 2055 /* 2056 * tvsub -- 2057 * Subtract 2 timeval structs: out = out - in. Out is assumed to 2058 * be >= in. 2059 */ 2060 void 2061 tvsub(struct timeval *out, struct timeval *in) 2062 { 2063 if ((out->tv_usec -= in->tv_usec) < 0) { 2064 --out->tv_sec; 2065 out->tv_usec += 1000000; 2066 } 2067 out->tv_sec -= in->tv_sec; 2068 } 2069 2070 /* 2071 * onint -- 2072 * SIGINT handler. 2073 */ 2074 /* ARGSUSED */ 2075 void 2076 onint(int notused) 2077 { 2078 summary(); 2079 2080 (void)signal(SIGINT, SIG_DFL); 2081 (void)kill(getpid(), SIGINT); 2082 2083 /* NOTREACHED */ 2084 exit(1); 2085 } 2086 2087 /* 2088 * summary -- 2089 * Print out statistics. 2090 */ 2091 void 2092 summary(void) 2093 { 2094 2095 (void)printf("\n--- %s ping6 statistics ---\n", hostname); 2096 (void)printf("%ld packets transmitted, ", ntransmitted); 2097 (void)printf("%ld packets received, ", nreceived); 2098 if (nrepeats) 2099 (void)printf("+%ld duplicates, ", nrepeats); 2100 if (ntransmitted) { 2101 if (nreceived > ntransmitted) 2102 (void)printf("-- somebody's duplicating packets!"); 2103 else 2104 (void)printf("%.1f%% packet loss", 2105 ((((double)ntransmitted - nreceived) * 100.0) / 2106 ntransmitted)); 2107 } 2108 (void)putchar('\n'); 2109 if (nreceived && timing) { 2110 /* Only display average to microseconds */ 2111 double num = nreceived + nrepeats; 2112 double avg = tsum / num; 2113 double dev = sqrt((tsumsq - num * avg * avg) / (num - 1)); 2114 (void)printf( 2115 "round-trip min/avg/max/std-dev = %.3f/%.3f/%.3f/%.3f ms\n", 2116 tmin, avg, tmax, dev); 2117 (void)fflush(stdout); 2118 } 2119 (void)fflush(stdout); 2120 } 2121 2122 /*subject type*/ 2123 static const char *niqcode[] = { 2124 "IPv6 address", 2125 "DNS label", /*or empty*/ 2126 "IPv4 address", 2127 }; 2128 2129 /*result code*/ 2130 static const char *nircode[] = { 2131 "Success", "Refused", "Unknown", 2132 }; 2133 2134 2135 /* 2136 * pr_icmph -- 2137 * Print a descriptive string about an ICMP header. 2138 */ 2139 void 2140 pr_icmph(struct icmp6_hdr *icp, u_char *end) 2141 { 2142 char ntop_buf[INET6_ADDRSTRLEN]; 2143 struct nd_redirect *red; 2144 struct icmp6_nodeinfo *ni; 2145 char dnsname[MAXDNAME + 1]; 2146 const u_char *cp; 2147 size_t l; 2148 2149 switch (icp->icmp6_type) { 2150 case ICMP6_DST_UNREACH: 2151 switch (icp->icmp6_code) { 2152 case ICMP6_DST_UNREACH_NOROUTE: 2153 (void)printf("No Route to Destination\n"); 2154 break; 2155 case ICMP6_DST_UNREACH_ADMIN: 2156 (void)printf("Destination Administratively " 2157 "Unreachable\n"); 2158 break; 2159 case ICMP6_DST_UNREACH_BEYONDSCOPE: 2160 (void)printf("Destination Unreachable Beyond Scope\n"); 2161 break; 2162 case ICMP6_DST_UNREACH_ADDR: 2163 (void)printf("Destination Host Unreachable\n"); 2164 break; 2165 case ICMP6_DST_UNREACH_NOPORT: 2166 (void)printf("Destination Port Unreachable\n"); 2167 break; 2168 default: 2169 (void)printf("Destination Unreachable, Bad Code: %d\n", 2170 icp->icmp6_code); 2171 break; 2172 } 2173 /* Print returned IP header information */ 2174 pr_retip((struct ip6_hdr *)(icp + 1), end); 2175 break; 2176 case ICMP6_PACKET_TOO_BIG: 2177 (void)printf("Packet too big mtu = %d\n", 2178 (int)ntohl(icp->icmp6_mtu)); 2179 pr_retip((struct ip6_hdr *)(icp + 1), end); 2180 break; 2181 case ICMP6_TIME_EXCEEDED: 2182 switch (icp->icmp6_code) { 2183 case ICMP6_TIME_EXCEED_TRANSIT: 2184 (void)printf("Time to live exceeded\n"); 2185 break; 2186 case ICMP6_TIME_EXCEED_REASSEMBLY: 2187 (void)printf("Frag reassembly time exceeded\n"); 2188 break; 2189 default: 2190 (void)printf("Time exceeded, Bad Code: %d\n", 2191 icp->icmp6_code); 2192 break; 2193 } 2194 pr_retip((struct ip6_hdr *)(icp + 1), end); 2195 break; 2196 case ICMP6_PARAM_PROB: 2197 (void)printf("Parameter problem: "); 2198 switch (icp->icmp6_code) { 2199 case ICMP6_PARAMPROB_HEADER: 2200 (void)printf("Erroneous Header "); 2201 break; 2202 case ICMP6_PARAMPROB_NEXTHEADER: 2203 (void)printf("Unknown Nextheader "); 2204 break; 2205 case ICMP6_PARAMPROB_OPTION: 2206 (void)printf("Unrecognized Option "); 2207 break; 2208 default: 2209 (void)printf("Bad code(%d) ", icp->icmp6_code); 2210 break; 2211 } 2212 (void)printf("pointer = 0x%02x\n", 2213 (u_int32_t)ntohl(icp->icmp6_pptr)); 2214 pr_retip((struct ip6_hdr *)(icp + 1), end); 2215 break; 2216 case ICMP6_ECHO_REQUEST: 2217 (void)printf("Echo Request"); 2218 /* XXX ID + Seq + Data */ 2219 break; 2220 case ICMP6_ECHO_REPLY: 2221 (void)printf("Echo Reply"); 2222 /* XXX ID + Seq + Data */ 2223 break; 2224 case ICMP6_MEMBERSHIP_QUERY: 2225 (void)printf("Listener Query"); 2226 break; 2227 case ICMP6_MEMBERSHIP_REPORT: 2228 (void)printf("Listener Report"); 2229 break; 2230 case ICMP6_MEMBERSHIP_REDUCTION: 2231 (void)printf("Listener Done"); 2232 break; 2233 case ND_ROUTER_SOLICIT: 2234 (void)printf("Router Solicitation"); 2235 break; 2236 case ND_ROUTER_ADVERT: 2237 (void)printf("Router Advertisement"); 2238 break; 2239 case ND_NEIGHBOR_SOLICIT: 2240 (void)printf("Neighbor Solicitation"); 2241 break; 2242 case ND_NEIGHBOR_ADVERT: 2243 (void)printf("Neighbor Advertisement"); 2244 break; 2245 case ND_REDIRECT: 2246 red = (struct nd_redirect *)icp; 2247 (void)printf("Redirect\n"); 2248 if (!inet_ntop(AF_INET6, &red->nd_rd_dst, ntop_buf, 2249 sizeof(ntop_buf))) 2250 strlcpy(ntop_buf, "?", sizeof(ntop_buf)); 2251 (void)printf("Destination: %s", ntop_buf); 2252 if (!inet_ntop(AF_INET6, &red->nd_rd_target, ntop_buf, 2253 sizeof(ntop_buf))) 2254 strlcpy(ntop_buf, "?", sizeof(ntop_buf)); 2255 (void)printf(" New Target: %s", ntop_buf); 2256 break; 2257 case ICMP6_NI_QUERY: 2258 (void)printf("Node Information Query"); 2259 /* XXX ID + Seq + Data */ 2260 ni = (struct icmp6_nodeinfo *)icp; 2261 l = end - (u_char *)(ni + 1); 2262 printf(", "); 2263 switch (ntohs(ni->ni_qtype)) { 2264 case NI_QTYPE_NOOP: 2265 (void)printf("NOOP"); 2266 break; 2267 case NI_QTYPE_SUPTYPES: 2268 (void)printf("Supported qtypes"); 2269 break; 2270 case NI_QTYPE_FQDN: 2271 (void)printf("DNS name"); 2272 break; 2273 case NI_QTYPE_NODEADDR: 2274 (void)printf("nodeaddr"); 2275 break; 2276 case NI_QTYPE_IPV4ADDR: 2277 (void)printf("IPv4 nodeaddr"); 2278 break; 2279 default: 2280 (void)printf("unknown qtype"); 2281 break; 2282 } 2283 if (options & F_VERBOSE) { 2284 switch (ni->ni_code) { 2285 case ICMP6_NI_SUBJ_IPV6: 2286 if (l == sizeof(struct in6_addr) && 2287 inet_ntop(AF_INET6, ni + 1, ntop_buf, 2288 sizeof(ntop_buf)) != NULL) { 2289 (void)printf(", subject=%s(%s)", 2290 niqcode[ni->ni_code], ntop_buf); 2291 } else { 2292 #if 1 2293 /* backward compat to -W */ 2294 (void)printf(", oldfqdn"); 2295 #else 2296 (void)printf(", invalid"); 2297 #endif 2298 } 2299 break; 2300 case ICMP6_NI_SUBJ_FQDN: 2301 if (end == (u_char *)(ni + 1)) { 2302 (void)printf(", no subject"); 2303 break; 2304 } 2305 printf(", subject=%s", niqcode[ni->ni_code]); 2306 cp = (const u_char *)(ni + 1); 2307 if (dnsdecode(&cp, end, NULL, dnsname, 2308 sizeof(dnsname)) != NULL) 2309 printf("(%s)", dnsname); 2310 else 2311 printf("(invalid)"); 2312 break; 2313 case ICMP6_NI_SUBJ_IPV4: 2314 if (l == sizeof(struct in_addr) && 2315 inet_ntop(AF_INET, ni + 1, ntop_buf, 2316 sizeof(ntop_buf)) != NULL) { 2317 (void)printf(", subject=%s(%s)", 2318 niqcode[ni->ni_code], ntop_buf); 2319 } else 2320 (void)printf(", invalid"); 2321 break; 2322 default: 2323 (void)printf(", invalid"); 2324 break; 2325 } 2326 } 2327 break; 2328 case ICMP6_NI_REPLY: 2329 (void)printf("Node Information Reply"); 2330 /* XXX ID + Seq + Data */ 2331 ni = (struct icmp6_nodeinfo *)icp; 2332 printf(", "); 2333 switch (ntohs(ni->ni_qtype)) { 2334 case NI_QTYPE_NOOP: 2335 (void)printf("NOOP"); 2336 break; 2337 case NI_QTYPE_SUPTYPES: 2338 (void)printf("Supported qtypes"); 2339 break; 2340 case NI_QTYPE_FQDN: 2341 (void)printf("DNS name"); 2342 break; 2343 case NI_QTYPE_NODEADDR: 2344 (void)printf("nodeaddr"); 2345 break; 2346 case NI_QTYPE_IPV4ADDR: 2347 (void)printf("IPv4 nodeaddr"); 2348 break; 2349 default: 2350 (void)printf("unknown qtype"); 2351 break; 2352 } 2353 if (options & F_VERBOSE) { 2354 if (ni->ni_code >= sizeof(nircode) / sizeof(nircode[0])) 2355 printf(", invalid"); 2356 else 2357 printf(", %s", nircode[ni->ni_code]); 2358 } 2359 break; 2360 default: 2361 (void)printf("Bad ICMP type: %d", icp->icmp6_type); 2362 } 2363 } 2364 2365 /* 2366 * pr_iph -- 2367 * Print an IP6 header. 2368 */ 2369 void 2370 pr_iph(struct ip6_hdr *ip6) 2371 { 2372 u_int32_t flow = ip6->ip6_flow & IPV6_FLOWLABEL_MASK; 2373 u_int8_t tc; 2374 char ntop_buf[INET6_ADDRSTRLEN]; 2375 2376 tc = *(&ip6->ip6_vfc + 1); /* XXX */ 2377 tc = (tc >> 4) & 0x0f; 2378 tc |= (ip6->ip6_vfc << 4); 2379 2380 printf("Vr TC Flow Plen Nxt Hlim\n"); 2381 printf(" %1x %02x %05x %04x %02x %02x\n", 2382 (ip6->ip6_vfc & IPV6_VERSION_MASK) >> 4, tc, (u_int32_t)ntohl(flow), 2383 ntohs(ip6->ip6_plen), ip6->ip6_nxt, ip6->ip6_hlim); 2384 if (!inet_ntop(AF_INET6, &ip6->ip6_src, ntop_buf, sizeof(ntop_buf))) 2385 strlcpy(ntop_buf, "?", sizeof(ntop_buf)); 2386 printf("%s->", ntop_buf); 2387 if (!inet_ntop(AF_INET6, &ip6->ip6_dst, ntop_buf, sizeof(ntop_buf))) 2388 strlcpy(ntop_buf, "?", sizeof(ntop_buf)); 2389 printf("%s\n", ntop_buf); 2390 } 2391 2392 /* 2393 * pr_addr -- 2394 * Return an ascii host address as a dotted quad and optionally with 2395 * a hostname. 2396 */ 2397 const char * 2398 pr_addr(struct sockaddr *addr, int addrlen) 2399 { 2400 static char buf[NI_MAXHOST]; 2401 int flag = 0; 2402 2403 if ((options & F_HOSTNAME) == 0) 2404 flag |= NI_NUMERICHOST; 2405 2406 if (getnameinfo(addr, addrlen, buf, sizeof(buf), NULL, 0, flag) == 0) 2407 return (buf); 2408 else 2409 return "?"; 2410 } 2411 2412 /* 2413 * pr_retip -- 2414 * Dump some info on a returned (via ICMPv6) IPv6 packet. 2415 */ 2416 void 2417 pr_retip(struct ip6_hdr *ip6, u_char *end) 2418 { 2419 u_char *cp = (u_char *)ip6, nh; 2420 int hlen; 2421 2422 if (end - (u_char *)ip6 < (intptr_t)sizeof(*ip6)) { 2423 printf("IP6"); 2424 goto trunc; 2425 } 2426 pr_iph(ip6); 2427 hlen = sizeof(*ip6); 2428 2429 nh = ip6->ip6_nxt; 2430 cp += hlen; 2431 while (end - cp >= 8) { 2432 switch (nh) { 2433 case IPPROTO_HOPOPTS: 2434 printf("HBH "); 2435 hlen = (((struct ip6_hbh *)cp)->ip6h_len+1) << 3; 2436 nh = ((struct ip6_hbh *)cp)->ip6h_nxt; 2437 break; 2438 case IPPROTO_DSTOPTS: 2439 printf("DSTOPT "); 2440 hlen = (((struct ip6_dest *)cp)->ip6d_len+1) << 3; 2441 nh = ((struct ip6_dest *)cp)->ip6d_nxt; 2442 break; 2443 case IPPROTO_FRAGMENT: 2444 printf("FRAG "); 2445 hlen = sizeof(struct ip6_frag); 2446 nh = ((struct ip6_frag *)cp)->ip6f_nxt; 2447 break; 2448 case IPPROTO_ROUTING: 2449 printf("RTHDR "); 2450 hlen = (((struct ip6_rthdr *)cp)->ip6r_len+1) << 3; 2451 nh = ((struct ip6_rthdr *)cp)->ip6r_nxt; 2452 break; 2453 #ifdef IPSEC 2454 case IPPROTO_AH: 2455 printf("AH "); 2456 hlen = (((struct ah *)cp)->ah_len+2) << 2; 2457 nh = ((struct ah *)cp)->ah_nxt; 2458 break; 2459 #endif 2460 case IPPROTO_ICMPV6: 2461 printf("ICMP6: type = %d, code = %d\n", 2462 *cp, *(cp + 1)); 2463 return; 2464 case IPPROTO_ESP: 2465 printf("ESP\n"); 2466 return; 2467 case IPPROTO_TCP: 2468 printf("TCP: from port %u, to port %u (decimal)\n", 2469 (*cp * 256 + *(cp + 1)), 2470 (*(cp + 2) * 256 + *(cp + 3))); 2471 return; 2472 case IPPROTO_UDP: 2473 printf("UDP: from port %u, to port %u (decimal)\n", 2474 (*cp * 256 + *(cp + 1)), 2475 (*(cp + 2) * 256 + *(cp + 3))); 2476 return; 2477 default: 2478 printf("Unknown Header(%d)\n", nh); 2479 return; 2480 } 2481 2482 if ((cp += hlen) >= end) 2483 goto trunc; 2484 } 2485 if (end - cp < 8) 2486 goto trunc; 2487 2488 putchar('\n'); 2489 return; 2490 2491 trunc: 2492 printf("...\n"); 2493 return; 2494 } 2495 2496 void 2497 fill(char *bp, char *patp) 2498 { 2499 int ii, jj, kk; 2500 int pat[16]; 2501 char *cp; 2502 2503 for (cp = patp; *cp; cp++) 2504 if (!isxdigit((unsigned char)*cp)) 2505 errx(1, "patterns must be specified as hex digits"); 2506 ii = sscanf(patp, 2507 "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x", 2508 &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6], 2509 &pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12], 2510 &pat[13], &pat[14], &pat[15]); 2511 2512 /* xxx */ 2513 if (ii > 0) 2514 for (kk = 0; 2515 kk <= (int)(MAXDATALEN - (8 + sizeof(struct tv32) + ii)); 2516 kk += ii) 2517 for (jj = 0; jj < ii; ++jj) 2518 bp[jj + kk] = pat[jj]; 2519 if (!(options & F_QUIET)) { 2520 (void)printf("PATTERN: 0x"); 2521 for (jj = 0; jj < ii; ++jj) 2522 (void)printf("%02x", bp[jj] & 0xFF); 2523 (void)printf("\n"); 2524 } 2525 } 2526 2527 #ifdef IPSEC 2528 #ifdef IPSEC_POLICY_IPSEC 2529 int 2530 setpolicy(int so, char *policy) 2531 { 2532 char *buf; 2533 2534 if (policy == NULL) 2535 return 0; /* ignore */ 2536 2537 buf = ipsec_set_policy(policy, strlen(policy)); 2538 if (buf == NULL) 2539 errx(1, "%s", ipsec_strerror()); 2540 if (setsockopt(s, IPPROTO_IPV6, IPV6_IPSEC_POLICY, buf, 2541 ipsec_get_policylen(buf)) < 0) 2542 warnx("Unable to set IPsec policy"); 2543 free(buf); 2544 2545 return 0; 2546 } 2547 #endif 2548 #endif 2549 2550 char * 2551 nigroup(char *name) 2552 { 2553 char *p; 2554 char *q; 2555 MD5_CTX ctxt; 2556 u_int8_t digest[16]; 2557 u_int8_t c; 2558 size_t l; 2559 char hbuf[NI_MAXHOST]; 2560 struct in6_addr in6; 2561 2562 p = strchr(name, '.'); 2563 if (!p) 2564 p = name + strlen(name); 2565 l = p - name; 2566 if (l > 63 || l > sizeof(hbuf) - 1) 2567 return NULL; /*label too long*/ 2568 strncpy(hbuf, name, l); 2569 hbuf[(int)l] = '\0'; 2570 2571 for (q = name; *q; q++) { 2572 if (isupper(*(unsigned char *)q)) 2573 *q = tolower(*(unsigned char *)q); 2574 } 2575 2576 /* generate 8 bytes of pseudo-random value. */ 2577 memset(&ctxt, 0, sizeof(ctxt)); 2578 MD5Init(&ctxt); 2579 c = l & 0xff; 2580 MD5Update(&ctxt, &c, sizeof(c)); 2581 MD5Update(&ctxt, (unsigned char *)name, l); 2582 MD5Final(digest, &ctxt); 2583 2584 if (inet_pton(AF_INET6, "ff02::2:0000:0000", &in6) != 1) 2585 return NULL; /*XXX*/ 2586 bcopy(digest, &in6.s6_addr[12], 4); 2587 2588 if (inet_ntop(AF_INET6, &in6, hbuf, sizeof(hbuf)) == NULL) 2589 return NULL; 2590 2591 return strdup(hbuf); 2592 } 2593 2594 void 2595 usage(void) 2596 { 2597 (void)fprintf(stderr, 2598 "usage: ping6 [-dfH" 2599 #ifdef IPV6_USE_MIN_MTU 2600 "m" 2601 #endif 2602 "nNqtvwW" 2603 #ifdef IPV6_REACHCONF 2604 "R" 2605 #endif 2606 #ifdef IPSEC 2607 #ifdef IPSEC_POLICY_IPSEC 2608 "] [-P policy" 2609 #else 2610 "AE" 2611 #endif 2612 #endif 2613 "] [-a [aAclsg]] [-b sockbufsiz] [-c count] \n" 2614 "\t[-I interface] [-i wait] [-l preload] [-p pattern] " 2615 "[-S sourceaddr]\n" 2616 "\t[-s packetsize] [-h hoplimit] [-g gateway] [hops...] host\n"); 2617 exit(1); 2618 } 2619
Indexes created Mon Oct 20 20:10:13 GMT 2025