1 /* 2 * Copyright (c) 1993, 1994, 1995, 1996, 1997 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that: (1) source code distributions 7 * retain the above copyright notice and this paragraph in its entirety, (2) 8 * distributions including binary code include the above copyright notice and 9 * this paragraph in its entirety in the documentation or other materials 10 * provided with the distribution, and (3) all advertising materials mentioning 11 * features or use of this software display the following acknowledgement: 12 * ``This product includes software developed by the University of California, 13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 14 * the University nor the names of its contributors may be used to endorse 15 * or promote products derived from this software without specific prior 16 * written permission. 17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 20 * 21 * This code contributed by Atanu Ghosh (atanu@cs.ucl.ac.uk), 22 * University College London, and subsequently modified by 23 * Guy Harris (guy@alum.mit.edu), Mark Pizzolato 24 * <List-tcpdump-workers@subscriptions.pizzolato.net>, 25 * and Mark C. Brown (mbrown@hp.com). 26 */ 27 28 /* 29 * Packet capture routine for DLPI under SunOS 5, HP-UX 9/10/11, and AIX. 30 * 31 * Notes: 32 * 33 * - The DLIOCRAW ioctl() is specific to SunOS. 34 * 35 * - There is a bug in bufmod(7) such that setting the snapshot 36 * length results in data being left of the front of the packet. 37 * 38 * - It might be desirable to use pfmod(7) to filter packets in the 39 * kernel when possible. 40 * 41 * - An older version of the HP-UX DLPI Programmer's Guide, which 42 * I think was advertised as the 10.20 version, used to be available 43 * at 44 * 45 * http://docs.hp.com/hpux/onlinedocs/B2355-90093/B2355-90093.html 46 * 47 * but is no longer available; it can still be found at 48 * 49 * http://h21007.www2.hp.com/dspp/files/unprotected/Drivers/Docs/Refs/B2355-90093.pdf 50 * 51 * in PDF form. 52 * 53 * - The HP-UX 10.x, 11.0, and 11i v1.6 version of the HP-UX DLPI 54 * Programmer's Guide, which I think was once advertised as the 55 * 11.00 version is available at 56 * 57 * http://docs.hp.com/en/B2355-90139/index.html 58 * 59 * - The HP-UX 11i v2 version of the HP-UX DLPI Programmer's Guide 60 * is available at 61 * 62 * http://docs.hp.com/en/B2355-90871/index.html 63 * 64 * - All of the HP documents describe raw-mode services, which are 65 * what we use if DL_HP_RAWDLS is defined. XXX - we use __hpux 66 * in some places to test for HP-UX, but use DL_HP_RAWDLS in 67 * other places; do we support any versions of HP-UX without 68 * DL_HP_RAWDLS? 69 */ 70 71 #ifndef lint 72 static const char rcsid[] _U_ = 73 "@(#) $Header: /tcpdump/master/libpcap/pcap-dlpi.c,v 1.108.2.6 2005/08/13 23:15:58 guy Exp $ (LBL)"; 74 #endif 75 76 #ifdef HAVE_CONFIG_H 77 #include "config.h" 78 #endif 79 80 #include <sys/types.h> 81 #include <sys/time.h> 82 #ifdef HAVE_SYS_BUFMOD_H 83 #include <sys/bufmod.h> 84 #endif 85 #include <sys/dlpi.h> 86 #ifdef HAVE_SYS_DLPI_EXT_H 87 #include <sys/dlpi_ext.h> 88 #endif 89 #ifdef HAVE_HPUX9 90 #include <sys/socket.h> 91 #endif 92 #ifdef DL_HP_PPA_REQ 93 #include <sys/stat.h> 94 #endif 95 #include <sys/stream.h> 96 #if defined(HAVE_SOLARIS) && defined(HAVE_SYS_BUFMOD_H) 97 #include <sys/systeminfo.h> 98 #endif 99 100 #ifdef HAVE_HPUX9 101 #include <net/if.h> 102 #endif 103 104 #include <ctype.h> 105 #ifdef HAVE_HPUX9 106 #include <nlist.h> 107 #endif 108 #include <errno.h> 109 #include <fcntl.h> 110 #include <memory.h> 111 #include <stdio.h> 112 #include <stdlib.h> 113 #include <string.h> 114 #include <stropts.h> 115 #include <unistd.h> 116 117 #ifdef HAVE_LIMITS_H 118 #include <limits.h> 119 #else 120 #define INT_MAX 2147483647 121 #endif 122 123 #include "pcap-int.h" 124 125 #ifdef HAVE_OS_PROTO_H 126 #include "os-proto.h" 127 #endif 128 129 #ifndef PCAP_DEV_PREFIX 130 #ifdef _AIX 131 #define PCAP_DEV_PREFIX "/dev/dlpi" 132 #else 133 #define PCAP_DEV_PREFIX "/dev" 134 #endif 135 #endif 136 137 #define MAXDLBUF 8192 138 139 #ifdef HAVE_SYS_BUFMOD_H 140 141 /* 142 * Size of a bufmod chunk to pass upstream; that appears to be the biggest 143 * value to which you can set it, and setting it to that value (which 144 * is bigger than what appears to be the Solaris default of 8192) 145 * reduces the number of packet drops. 146 */ 147 #define CHUNKSIZE 65536 148 149 /* 150 * Size of the buffer to allocate for packet data we read; it must be 151 * large enough to hold a chunk. 152 */ 153 #define PKTBUFSIZE CHUNKSIZE 154 155 #else /* HAVE_SYS_BUFMOD_H */ 156 157 /* 158 * Size of the buffer to allocate for packet data we read; this is 159 * what the value used to be - there's no particular reason why it 160 * should be tied to MAXDLBUF, but we'll leave it as this for now. 161 */ 162 #define PKTBUFSIZE (MAXDLBUF * sizeof(bpf_u_int32)) 163 164 #endif 165 166 /* Forwards */ 167 static char *split_dname(char *, int *, char *); 168 static int dl_doattach(int, int, char *); 169 #ifdef DL_HP_RAWDLS 170 static int dl_dohpuxbind(int, char *); 171 #endif 172 static int dlattachreq(int, bpf_u_int32, char *); 173 static int dlbindreq(int, bpf_u_int32, char *); 174 static int dlbindack(int, char *, char *, int *); 175 static int dlpromisconreq(int, bpf_u_int32, char *); 176 static int dlokack(int, const char *, char *, char *); 177 static int dlinforeq(int, char *); 178 static int dlinfoack(int, char *, char *); 179 #ifdef DL_HP_RAWDLS 180 static int dlrawdatareq(int, const u_char *, int); 181 #endif 182 static int recv_ack(int, int, const char *, char *, char *, int *); 183 static char *dlstrerror(bpf_u_int32); 184 static char *dlprim(bpf_u_int32); 185 #if defined(HAVE_SOLARIS) && defined(HAVE_SYS_BUFMOD_H) 186 static char *get_release(bpf_u_int32 *, bpf_u_int32 *, bpf_u_int32 *); 187 #endif 188 static int send_request(int, char *, int, char *, char *); 189 #ifdef HAVE_SYS_BUFMOD_H 190 static int strioctl(int, int, int, char *); 191 #endif 192 #ifdef HAVE_HPUX9 193 static int dlpi_kread(int, off_t, void *, u_int, char *); 194 #endif 195 #ifdef HAVE_DEV_DLPI 196 static int get_dlpi_ppa(int, const char *, int, char *); 197 #endif 198 199 static int 200 pcap_stats_dlpi(pcap_t *p, struct pcap_stat *ps) 201 { 202 203 /* 204 * "ps_recv" counts packets handed to the filter, not packets 205 * that passed the filter. As filtering is done in userland, 206 * this would not include packets dropped because we ran out 207 * of buffer space; in order to make this more like other 208 * platforms (Linux 2.4 and later, BSDs with BPF), where the 209 * "packets received" count includes packets received but dropped 210 * due to running out of buffer space, and to keep from confusing 211 * applications that, for example, compute packet drop percentages, 212 * we also make it count packets dropped by "bufmod" (otherwise we 213 * might run the risk of the packet drop count being bigger than 214 * the received-packet count). 215 * 216 * "ps_drop" counts packets dropped by "bufmod" because of 217 * flow control requirements or resource exhaustion; it doesn't 218 * count packets dropped by the interface driver, or packets 219 * dropped upstream. As filtering is done in userland, it counts 220 * packets regardless of whether they would've passed the filter. 221 * 222 * These statistics don't include packets not yet read from 223 * the kernel by libpcap, but they may include packets not 224 * yet read from libpcap by the application. 225 */ 226 *ps = p->md.stat; 227 228 /* 229 * Add in the drop count, as per the above comment. 230 */ 231 ps->ps_recv += ps->ps_drop; 232 return (0); 233 } 234 235 /* XXX Needed by HP-UX (at least) */ 236 static bpf_u_int32 ctlbuf[MAXDLBUF]; 237 static struct strbuf ctl = { 238 MAXDLBUF, 239 0, 240 (char *)ctlbuf 241 }; 242 243 static int 244 pcap_read_dlpi(pcap_t *p, int cnt, pcap_handler callback, u_char *user) 245 { 246 register int cc, n, caplen, origlen; 247 register u_char *bp, *ep, *pk; 248 register struct bpf_insn *fcode; 249 #ifdef HAVE_SYS_BUFMOD_H 250 register struct sb_hdr *sbp; 251 #ifdef LBL_ALIGN 252 struct sb_hdr sbhdr; 253 #endif 254 #endif 255 int flags; 256 struct strbuf data; 257 struct pcap_pkthdr pkthdr; 258 259 flags = 0; 260 cc = p->cc; 261 if (cc == 0) { 262 data.buf = (char *)p->buffer + p->offset; 263 data.maxlen = p->bufsize; 264 data.len = 0; 265 do { 266 /* 267 * Has "pcap_breakloop()" been called? 268 */ 269 if (p->break_loop) { 270 /* 271 * Yes - clear the flag that indicates 272 * that it has, and return -2 to 273 * indicate that we were told to 274 * break out of the loop. 275 */ 276 p->break_loop = 0; 277 return (-2); 278 } 279 /* 280 * XXX - check for the DLPI primitive, which 281 * would be DL_HP_RAWDATA_IND on HP-UX 282 * if we're in raw mode? 283 */ 284 if (getmsg(p->fd, &ctl, &data, &flags) < 0) { 285 /* Don't choke when we get ptraced */ 286 switch (errno) { 287 288 case EINTR: 289 cc = 0; 290 continue; 291 292 case EAGAIN: 293 return (0); 294 } 295 strlcpy(p->errbuf, pcap_strerror(errno), 296 sizeof(p->errbuf)); 297 return (-1); 298 } 299 cc = data.len; 300 } while (cc == 0); 301 bp = p->buffer + p->offset; 302 } else 303 bp = p->bp; 304 305 /* Loop through packets */ 306 fcode = p->fcode.bf_insns; 307 ep = bp + cc; 308 n = 0; 309 #ifdef HAVE_SYS_BUFMOD_H 310 while (bp < ep) { 311 /* 312 * Has "pcap_breakloop()" been called? 313 * If so, return immediately - if we haven't read any 314 * packets, clear the flag and return -2 to indicate 315 * that we were told to break out of the loop, otherwise 316 * leave the flag set, so that the *next* call will break 317 * out of the loop without having read any packets, and 318 * return the number of packets we've processed so far. 319 */ 320 if (p->break_loop) { 321 if (n == 0) { 322 p->break_loop = 0; 323 return (-2); 324 } else { 325 p->bp = bp; 326 p->cc = ep - bp; 327 return (n); 328 } 329 } 330 #ifdef LBL_ALIGN 331 if ((long)bp & 3) { 332 sbp = &sbhdr; 333 memcpy(sbp, bp, sizeof(*sbp)); 334 } else 335 #endif 336 sbp = (struct sb_hdr *)bp; 337 p->md.stat.ps_drop = sbp->sbh_drops; 338 pk = bp + sizeof(*sbp); 339 bp += sbp->sbh_totlen; 340 origlen = sbp->sbh_origlen; 341 caplen = sbp->sbh_msglen; 342 #else 343 origlen = cc; 344 caplen = min(p->snapshot, cc); 345 pk = bp; 346 bp += caplen; 347 #endif 348 ++p->md.stat.ps_recv; 349 if (bpf_filter(fcode, pk, origlen, caplen)) { 350 #ifdef HAVE_SYS_BUFMOD_H 351 pkthdr.ts.tv_sec = sbp->sbh_timestamp.tv_sec; 352 pkthdr.ts.tv_usec = sbp->sbh_timestamp.tv_usec; 353 #else 354 (void)gettimeofday(&pkthdr.ts, NULL); 355 #endif 356 pkthdr.len = origlen; 357 pkthdr.caplen = caplen; 358 /* Insure caplen does not exceed snapshot */ 359 if (pkthdr.caplen > p->snapshot) 360 pkthdr.caplen = p->snapshot; 361 (*callback)(user, &pkthdr, pk); 362 if (++n >= cnt && cnt >= 0) { 363 p->cc = ep - bp; 364 p->bp = bp; 365 return (n); 366 } 367 } 368 #ifdef HAVE_SYS_BUFMOD_H 369 } 370 #endif 371 p->cc = 0; 372 return (n); 373 } 374 375 static int 376 pcap_inject_dlpi(pcap_t *p, const void *buf, size_t size) 377 { 378 int ret; 379 380 #if defined(DLIOCRAW) 381 ret = write(p->fd, buf, size); 382 if (ret == -1) { 383 snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "send: %s", 384 pcap_strerror(errno)); 385 return (-1); 386 } 387 #elif defined(DL_HP_RAWDLS) 388 if (p->send_fd < 0) { 389 snprintf(p->errbuf, PCAP_ERRBUF_SIZE, 390 "send: Output FD couldn't be opened"); 391 return (-1); 392 } 393 ret = dlrawdatareq(p->send_fd, buf, size); 394 if (ret == -1) { 395 snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "send: %s", 396 pcap_strerror(errno)); 397 return (-1); 398 } 399 #else /* no raw mode */ 400 /* 401 * XXX - this is a pain, because you might have to extract 402 * the address from the packet and use it in a DL_UNITDATA_REQ 403 * request. That would be dependent on the link-layer type. 404 * 405 * I also don't know what SAP you'd have to bind the descriptor 406 * to, or whether you'd need separate "receive" and "send" FDs, 407 * nor do I know whether you'd need different bindings for 408 * D/I/X Ethernet and 802.3, or for {FDDI,Token Ring} plus 409 * 802.2 and {FDDI,Token Ring} plus 802.2 plus SNAP. 410 * 411 * So, for now, we just return a "you can't send" indication, 412 * and leave it up to somebody with a DLPI-based system lacking 413 * both DLIOCRAW and DL_HP_RAWDLS to supply code to implement 414 * packet transmission on that system. If they do, they should 415 * send it to us - but should not send us code that assumes 416 * Ethernet; if the code doesn't work on non-Ethernet interfaces, 417 * it should check "p->linktype" and reject the send request if 418 * it's anything other than DLT_EN10MB. 419 */ 420 strlcpy(p->errbuf, "send: Not supported on this version of this OS", 421 PCAP_ERRBUF_SIZE); 422 ret = -1; 423 #endif /* raw mode */ 424 return (ret); 425 } 426 427 #ifndef DL_IPATM 428 #define DL_IPATM 0x12 /* ATM Classical IP interface */ 429 #endif 430 431 #ifdef HAVE_SOLARIS 432 /* 433 * For SunATM. 434 */ 435 #ifndef A_GET_UNITS 436 #define A_GET_UNITS (('A'<<8)|118) 437 #endif /* A_GET_UNITS */ 438 #ifndef A_PROMISCON_REQ 439 #define A_PROMISCON_REQ (('A'<<8)|121) 440 #endif /* A_PROMISCON_REQ */ 441 #endif /* HAVE_SOLARIS */ 442 443 static void 444 pcap_close_dlpi(pcap_t *p) 445 { 446 pcap_close_common(p); 447 if (p->send_fd >= 0) 448 close(p->send_fd); 449 } 450 451 pcap_t * 452 pcap_open_live(const char *device, int snaplen, int promisc, int to_ms, 453 char *ebuf) 454 { 455 register char *cp; 456 register pcap_t *p; 457 int ppa; 458 #ifdef HAVE_SOLARIS 459 int isatm = 0; 460 #endif 461 register dl_info_ack_t *infop; 462 #ifdef HAVE_SYS_BUFMOD_H 463 bpf_u_int32 ss, chunksize; 464 #ifdef HAVE_SOLARIS 465 register char *release; 466 bpf_u_int32 osmajor, osminor, osmicro; 467 #endif 468 #endif 469 bpf_u_int32 buf[MAXDLBUF]; 470 char dname[100]; 471 #ifndef HAVE_DEV_DLPI 472 char dname2[100]; 473 #endif 474 475 p = (pcap_t *)malloc(sizeof(*p)); 476 if (p == NULL) { 477 strlcpy(ebuf, pcap_strerror(errno), PCAP_ERRBUF_SIZE); 478 return (NULL); 479 } 480 memset(p, 0, sizeof(*p)); 481 p->fd = -1; /* indicate that it hasn't been opened yet */ 482 p->send_fd = -1; 483 484 #ifdef HAVE_DEV_DLPI 485 /* 486 ** Remove any "/dev/" on the front of the device. 487 */ 488 cp = strrchr(device, '/'); 489 if (cp == NULL) 490 strlcpy(dname, device, sizeof(dname)); 491 else 492 strlcpy(dname, cp + 1, sizeof(dname)); 493 494 /* 495 * Split the device name into a device type name and a unit number; 496 * chop off the unit number, so "dname" is just a device type name. 497 */ 498 cp = split_dname(dname, &ppa, ebuf); 499 if (cp == NULL) 500 goto bad; 501 *cp = '\0'; 502 503 /* 504 * Use "/dev/dlpi" as the device. 505 * 506 * XXX - HP's DLPI Programmer's Guide for HP-UX 11.00 says that 507 * the "dl_mjr_num" field is for the "major number of interface 508 * driver"; that's the major of "/dev/dlpi" on the system on 509 * which I tried this, but there may be DLPI devices that 510 * use a different driver, in which case we may need to 511 * search "/dev" for the appropriate device with that major 512 * device number, rather than hardwiring "/dev/dlpi". 513 */ 514 cp = "/dev/dlpi"; 515 if ((p->fd = open(cp, O_RDWR)) < 0) { 516 snprintf(ebuf, PCAP_ERRBUF_SIZE, 517 "%s: %s", cp, pcap_strerror(errno)); 518 goto bad; 519 } 520 521 #ifdef DL_HP_RAWDLS 522 /* 523 * XXX - HP-UX 10.20 and 11.xx don't appear to support sending and 524 * receiving packets on the same descriptor - you need separate 525 * descriptors for sending and receiving, bound to different SAPs. 526 * 527 * If the open fails, we just leave -1 in "p->send_fd" and reject 528 * attempts to send packets, just as if, in pcap-bpf.c, we fail 529 * to open the BPF device for reading and writing, we just try 530 * to open it for reading only and, if that succeeds, just let 531 * the send attempts fail. 532 */ 533 p->send_fd = open(cp, O_RDWR); 534 #endif 535 536 /* 537 * Get a table of all PPAs for that device, and search that 538 * table for the specified device type name and unit number. 539 */ 540 ppa = get_dlpi_ppa(p->fd, dname, ppa, ebuf); 541 if (ppa < 0) 542 goto bad; 543 #else 544 /* 545 * If the device name begins with "/", assume it begins with 546 * the pathname of the directory containing the device to open; 547 * otherwise, concatenate the device directory name and the 548 * device name. 549 */ 550 if (*device == '/') 551 strlcpy(dname, device, sizeof(dname)); 552 else 553 snprintf(dname, sizeof(dname), "%s/%s", PCAP_DEV_PREFIX, 554 device); 555 556 /* 557 * Get the unit number, and a pointer to the end of the device 558 * type name. 559 */ 560 cp = split_dname(dname, &ppa, ebuf); 561 if (cp == NULL) 562 goto bad; 563 564 /* 565 * Make a copy of the device pathname, and then remove the unit 566 * number from the device pathname. 567 */ 568 strlcpy(dname2, dname, sizeof(dname)); 569 *cp = '\0'; 570 571 /* Try device without unit number */ 572 if ((p->fd = open(dname, O_RDWR)) < 0) { 573 if (errno != ENOENT) { 574 snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s: %s", dname, 575 pcap_strerror(errno)); 576 goto bad; 577 } 578 579 /* Try again with unit number */ 580 if ((p->fd = open(dname2, O_RDWR)) < 0) { 581 if (errno == ENOENT) { 582 /* 583 * We just report "No DLPI device found" 584 * with the device name, so people don't 585 * get confused and think, for example, 586 * that if they can't capture on "lo0" 587 * on Solaris the fix is to change libpcap 588 * (or the application that uses it) to 589 * look for something other than "/dev/lo0", 590 * as the fix is to look for an operating 591 * system other than Solaris - you just 592 * *can't* capture on a loopback interface 593 * on Solaris, the lack of a DLPI device 594 * for the loopback interface is just a 595 * symptom of that inability. 596 */ 597 snprintf(ebuf, PCAP_ERRBUF_SIZE, 598 "%s: No DLPI device found", device); 599 } else { 600 snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s: %s", 601 dname2, pcap_strerror(errno)); 602 } 603 goto bad; 604 } 605 /* XXX Assume unit zero */ 606 ppa = 0; 607 } 608 #endif 609 610 p->snapshot = snaplen; 611 612 /* 613 ** Attach if "style 2" provider 614 */ 615 if (dlinforeq(p->fd, ebuf) < 0 || 616 dlinfoack(p->fd, (char *)buf, ebuf) < 0) 617 goto bad; 618 infop = &((union DL_primitives *)buf)->info_ack; 619 #ifdef HAVE_SOLARIS 620 if (infop->dl_mac_type == DL_IPATM) 621 isatm = 1; 622 #endif 623 if (infop->dl_provider_style == DL_STYLE2) { 624 if (dl_doattach(p->fd, ppa, ebuf) < 0) 625 goto bad; 626 #ifdef DL_HP_RAWDLS 627 if (p->send_fd >= 0) { 628 if (dl_doattach(p->send_fd, ppa, ebuf) < 0) 629 goto bad; 630 } 631 #endif 632 } 633 634 /* 635 ** Bind (defer if using HP-UX 9 or HP-UX 10.20 or later, totally 636 ** skip if using SINIX) 637 */ 638 #if !defined(HAVE_HPUX9) && !defined(HAVE_HPUX10_20_OR_LATER) && !defined(sinix) 639 #ifdef _AIX 640 /* 641 ** AIX. 642 ** According to IBM's AIX Support Line, the dl_sap value 643 ** should not be less than 0x600 (1536) for standard Ethernet. 644 ** However, we seem to get DL_BADADDR - "DLSAP addr in improper 645 ** format or invalid" - errors if we use 1537 on the "tr0" 646 ** device, which, given that its name starts with "tr" and that 647 ** it's IBM, probably means a Token Ring device. (Perhaps we 648 ** need to use 1537 on "/dev/dlpi/en" because that device is for 649 ** D/I/X Ethernet, the "SAP" is actually an Ethernet type, and 650 ** it rejects invalid Ethernet types.) 651 ** 652 ** So if 1537 fails, we try 2, as Hyung Sik Yoon of IBM Korea 653 ** says that works on Token Ring (he says that 0 does *not* 654 ** work; perhaps that's considered an invalid LLC SAP value - I 655 ** assume the SAP value in a DLPI bind is an LLC SAP for network 656 ** types that use 802.2 LLC). 657 */ 658 if ((dlbindreq(p->fd, 1537, ebuf) < 0 && 659 dlbindreq(p->fd, 2, ebuf) < 0) || 660 dlbindack(p->fd, (char *)buf, ebuf, NULL) < 0) 661 goto bad; 662 #elif defined(DL_HP_RAWDLS) 663 /* 664 ** HP-UX 10.0x and 10.1x. 665 */ 666 if (dl_dohpuxbind(p->fd, ebuf) < 0) 667 goto bad; 668 if (p->send_fd >= 0) { 669 /* 670 ** XXX - if this fails, just close send_fd and 671 ** set it to -1, so that you can't send but can 672 ** still receive? 673 */ 674 if (dl_dohpuxbind(p->send_fd, ebuf) < 0) 675 goto bad; 676 } 677 #else /* neither AIX nor HP-UX */ 678 /* 679 ** Not Sinix, and neither AIX nor HP-UX - Solaris, and any other 680 ** OS using DLPI. 681 **/ 682 if (dlbindreq(p->fd, 0, ebuf) < 0 || 683 dlbindack(p->fd, (char *)buf, ebuf, NULL) < 0) 684 goto bad; 685 #endif /* AIX vs. HP-UX vs. other */ 686 #endif /* !HP-UX 9 and !HP-UX 10.20 or later and !SINIX */ 687 688 #ifdef HAVE_SOLARIS 689 if (isatm) { 690 /* 691 ** Have to turn on some special ATM promiscuous mode 692 ** for SunATM. 693 ** Do *NOT* turn regular promiscuous mode on; it doesn't 694 ** help, and may break things. 695 */ 696 if (strioctl(p->fd, A_PROMISCON_REQ, 0, NULL) < 0) { 697 snprintf(ebuf, PCAP_ERRBUF_SIZE, "A_PROMISCON_REQ: %s", 698 pcap_strerror(errno)); 699 goto bad; 700 } 701 } else 702 #endif 703 if (promisc) { 704 /* 705 ** Enable promiscuous (not necessary on send FD) 706 */ 707 if (dlpromisconreq(p->fd, DL_PROMISC_PHYS, ebuf) < 0 || 708 dlokack(p->fd, "promisc_phys", (char *)buf, ebuf) < 0) 709 goto bad; 710 711 /* 712 ** Try to enable multicast (you would have thought 713 ** promiscuous would be sufficient). (Skip if using 714 ** HP-UX or SINIX) (Not necessary on send FD) 715 */ 716 #if !defined(__hpux) && !defined(sinix) 717 if (dlpromisconreq(p->fd, DL_PROMISC_MULTI, ebuf) < 0 || 718 dlokack(p->fd, "promisc_multi", (char *)buf, ebuf) < 0) 719 fprintf(stderr, 720 "WARNING: DL_PROMISC_MULTI failed (%s)\n", ebuf); 721 #endif 722 } 723 /* 724 ** Try to enable SAP promiscuity (when not in promiscuous mode 725 ** when using HP-UX, when not doing SunATM on Solaris, and never 726 ** under SINIX) (Not necessary on send FD) 727 */ 728 #ifndef sinix 729 if ( 730 #ifdef __hpux 731 !promisc && 732 #endif 733 #ifdef HAVE_SOLARIS 734 !isatm && 735 #endif 736 (dlpromisconreq(p->fd, DL_PROMISC_SAP, ebuf) < 0 || 737 dlokack(p->fd, "promisc_sap", (char *)buf, ebuf) < 0)) { 738 /* Not fatal if promisc since the DL_PROMISC_PHYS worked */ 739 if (promisc) 740 fprintf(stderr, 741 "WARNING: DL_PROMISC_SAP failed (%s)\n", ebuf); 742 else 743 goto bad; 744 } 745 #endif /* sinix */ 746 747 /* 748 ** HP-UX 9, and HP-UX 10.20 or later, must bind after setting 749 ** promiscuous options. 750 */ 751 #if defined(HAVE_HPUX9) || defined(HAVE_HPUX10_20_OR_LATER) 752 if (dl_dohpuxbind(p->fd, ebuf) < 0) 753 goto bad; 754 /* 755 ** We don't set promiscuous mode on the send FD, but we'll defer 756 ** binding it anyway, just to keep the HP-UX 9/10.20 or later 757 ** code together. 758 */ 759 if (p->send_fd >= 0) { 760 /* 761 ** XXX - if this fails, just close send_fd and 762 ** set it to -1, so that you can't send but can 763 ** still receive? 764 */ 765 if (dl_dohpuxbind(p->send_fd, ebuf) < 0) 766 goto bad; 767 } 768 #endif 769 770 /* 771 ** Determine link type 772 ** XXX - get SAP length and address length as well, for use 773 ** when sending packets. 774 */ 775 if (dlinforeq(p->fd, ebuf) < 0 || 776 dlinfoack(p->fd, (char *)buf, ebuf) < 0) 777 goto bad; 778 779 infop = &((union DL_primitives *)buf)->info_ack; 780 switch (infop->dl_mac_type) { 781 782 case DL_CSMACD: 783 case DL_ETHER: 784 p->linktype = DLT_EN10MB; 785 p->offset = 2; 786 /* 787 * This is (presumably) a real Ethernet capture; give it a 788 * link-layer-type list with DLT_EN10MB and DLT_DOCSIS, so 789 * that an application can let you choose it, in case you're 790 * capturing DOCSIS traffic that a Cisco Cable Modem 791 * Termination System is putting out onto an Ethernet (it 792 * doesn't put an Ethernet header onto the wire, it puts raw 793 * DOCSIS frames out on the wire inside the low-level 794 * Ethernet framing). 795 */ 796 p->dlt_list = (u_int *) malloc(sizeof(u_int) * 2); 797 /* 798 * If that fails, just leave the list empty. 799 */ 800 if (p->dlt_list != NULL) { 801 p->dlt_list[0] = DLT_EN10MB; 802 p->dlt_list[1] = DLT_DOCSIS; 803 p->dlt_count = 2; 804 } 805 break; 806 807 case DL_FDDI: 808 p->linktype = DLT_FDDI; 809 p->offset = 3; 810 break; 811 812 case DL_TPR: 813 /* 814 * XXX - what about DL_TPB? Is that Token Bus? 815 */ 816 p->linktype = DLT_IEEE802; 817 p->offset = 2; 818 break; 819 820 #ifdef HAVE_SOLARIS 821 case DL_IPATM: 822 p->linktype = DLT_SUNATM; 823 p->offset = 0; /* works for LANE and LLC encapsulation */ 824 break; 825 #endif 826 827 default: 828 snprintf(ebuf, PCAP_ERRBUF_SIZE, "unknown mac type %lu", 829 (unsigned long)infop->dl_mac_type); 830 goto bad; 831 } 832 833 #ifdef DLIOCRAW 834 /* 835 ** This is a non standard SunOS hack to get the full raw link-layer 836 ** header. 837 */ 838 if (strioctl(p->fd, DLIOCRAW, 0, NULL) < 0) { 839 snprintf(ebuf, PCAP_ERRBUF_SIZE, "DLIOCRAW: %s", 840 pcap_strerror(errno)); 841 goto bad; 842 } 843 #endif 844 845 #ifdef HAVE_SYS_BUFMOD_H 846 /* 847 ** Another non standard call to get the data nicely buffered 848 */ 849 if (ioctl(p->fd, I_PUSH, "bufmod") != 0) { 850 snprintf(ebuf, PCAP_ERRBUF_SIZE, "I_PUSH bufmod: %s", 851 pcap_strerror(errno)); 852 goto bad; 853 } 854 855 /* 856 ** Now that the bufmod is pushed lets configure it. 857 ** 858 ** There is a bug in bufmod(7). When dealing with messages of 859 ** less than snaplen size it strips data from the beginning not 860 ** the end. 861 ** 862 ** This bug is supposed to be fixed in 5.3.2. Also, there is a 863 ** patch available. Ask for bugid 1149065. 864 */ 865 ss = snaplen; 866 #ifdef HAVE_SOLARIS 867 release = get_release(&osmajor, &osminor, &osmicro); 868 if (osmajor == 5 && (osminor <= 2 || (osminor == 3 && osmicro < 2)) && 869 getenv("BUFMOD_FIXED") == NULL) { 870 fprintf(stderr, 871 "WARNING: bufmod is broken in SunOS %s; ignoring snaplen.\n", 872 release); 873 ss = 0; 874 } 875 #endif 876 if (ss > 0 && 877 strioctl(p->fd, SBIOCSSNAP, sizeof(ss), (char *)&ss) != 0) { 878 snprintf(ebuf, PCAP_ERRBUF_SIZE, "SBIOCSSNAP: %s", 879 pcap_strerror(errno)); 880 goto bad; 881 } 882 883 /* 884 ** Set up the bufmod timeout 885 */ 886 if (to_ms != 0) { 887 struct timeval to; 888 889 to.tv_sec = to_ms / 1000; 890 to.tv_usec = (to_ms * 1000) % 1000000; 891 if (strioctl(p->fd, SBIOCSTIME, sizeof(to), (char *)&to) != 0) { 892 snprintf(ebuf, PCAP_ERRBUF_SIZE, "SBIOCSTIME: %s", 893 pcap_strerror(errno)); 894 goto bad; 895 } 896 } 897 898 /* 899 ** Set the chunk length. 900 */ 901 chunksize = CHUNKSIZE; 902 if (strioctl(p->fd, SBIOCSCHUNK, sizeof(chunksize), (char *)&chunksize) 903 != 0) { 904 snprintf(ebuf, PCAP_ERRBUF_SIZE, "SBIOCSCHUNKP: %s", 905 pcap_strerror(errno)); 906 goto bad; 907 } 908 #endif 909 910 /* 911 ** As the last operation flush the read side. 912 */ 913 if (ioctl(p->fd, I_FLUSH, FLUSHR) != 0) { 914 snprintf(ebuf, PCAP_ERRBUF_SIZE, "FLUSHR: %s", 915 pcap_strerror(errno)); 916 goto bad; 917 } 918 919 /* Allocate data buffer */ 920 p->bufsize = PKTBUFSIZE; 921 p->buffer = (u_char *)malloc(p->bufsize + p->offset); 922 if (p->buffer == NULL) { 923 strlcpy(ebuf, pcap_strerror(errno), PCAP_ERRBUF_SIZE); 924 goto bad; 925 } 926 927 /* 928 * "p->fd" is an FD for a STREAMS device, so "select()" and 929 * "poll()" should work on it. 930 */ 931 p->selectable_fd = p->fd; 932 933 p->read_op = pcap_read_dlpi; 934 p->inject_op = pcap_inject_dlpi; 935 p->setfilter_op = install_bpf_program; /* no kernel filtering */ 936 p->setdirection_op = NULL; /* Not implemented.*/ 937 p->set_datalink_op = NULL; /* can't change data link type */ 938 p->getnonblock_op = pcap_getnonblock_fd; 939 p->setnonblock_op = pcap_setnonblock_fd; 940 p->stats_op = pcap_stats_dlpi; 941 p->close_op = pcap_close_dlpi; 942 943 return (p); 944 bad: 945 if (p->fd >= 0) 946 close(p->fd); 947 if (p->send_fd >= 0) 948 close(p->send_fd); 949 /* 950 * Get rid of any link-layer type list we allocated. 951 */ 952 if (p->dlt_list != NULL) 953 free(p->dlt_list); 954 free(p); 955 return (NULL); 956 } 957 958 /* 959 * Split a device name into a device type name and a unit number; 960 * return the a pointer to the beginning of the unit number, which 961 * is the end of the device type name, and set "*unitp" to the unit 962 * number. 963 * 964 * Returns NULL on error, and fills "ebuf" with an error message. 965 */ 966 static char * 967 split_dname(char *device, int *unitp, char *ebuf) 968 { 969 char *cp; 970 char *eos; 971 long unit; 972 973 /* 974 * Look for a number at the end of the device name string. 975 */ 976 cp = device + strlen(device) - 1; 977 if (*cp < '0' || *cp > '9') { 978 snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s missing unit number", 979 device); 980 return (NULL); 981 } 982 983 /* Digits at end of string are unit number */ 984 while (cp-1 >= device && *(cp-1) >= '0' && *(cp-1) <= '9') 985 cp--; 986 987 errno = 0; 988 unit = strtol(cp, &eos, 10); 989 if (*eos != '\0') { 990 snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s bad unit number", device); 991 return (NULL); 992 } 993 if (errno == ERANGE || unit > INT_MAX) { 994 snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s unit number too large", 995 device); 996 return (NULL); 997 } 998 if (unit < 0) { 999 snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s unit number is negative", 1000 device); 1001 return (NULL); 1002 } 1003 *unitp = (int)unit; 1004 return (cp); 1005 } 1006 1007 static int 1008 dl_doattach(int fd, int ppa, char *ebuf) 1009 { 1010 bpf_u_int32 buf[MAXDLBUF]; 1011 1012 if (dlattachreq(fd, ppa, ebuf) < 0 || 1013 dlokack(fd, "attach", (char *)buf, ebuf) < 0) 1014 return (-1); 1015 return (0); 1016 } 1017 1018 #ifdef DL_HP_RAWDLS 1019 static int 1020 dl_dohpuxbind(int fd, char *ebuf) 1021 { 1022 int hpsap; 1023 int uerror; 1024 bpf_u_int32 buf[MAXDLBUF]; 1025 1026 /* 1027 * XXX - we start at 22 because we used to use only 22, but 1028 * that was just because that was the value used in some 1029 * sample code from HP. With what value *should* we start? 1030 * Does it matter, given that we're enabling SAP promiscuity 1031 * on the input FD? 1032 */ 1033 hpsap = 22; 1034 for (;;) { 1035 if (dlbindreq(fd, hpsap, ebuf) < 0) 1036 return (-1); 1037 if (dlbindack(fd, (char *)buf, ebuf, &uerror) >= 0) 1038 break; 1039 /* 1040 * For any error other than a UNIX EBUSY, give up. 1041 */ 1042 if (uerror != EBUSY) { 1043 /* 1044 * dlbindack() has already filled in ebuf for 1045 * this error. 1046 */ 1047 return (-1); 1048 } 1049 1050 /* 1051 * For EBUSY, try the next SAP value; that means that 1052 * somebody else is using that SAP. Clear ebuf so 1053 * that application doesn't report the "Device busy" 1054 * error as a warning. 1055 */ 1056 *ebuf = '\0'; 1057 hpsap++; 1058 if (hpsap > 100) { 1059 strlcpy(ebuf, 1060 "All SAPs from 22 through 100 are in use", 1061 PCAP_ERRBUF_SIZE); 1062 return (-1); 1063 } 1064 } 1065 return (0); 1066 } 1067 #endif 1068 1069 int 1070 pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf) 1071 { 1072 #ifdef HAVE_SOLARIS 1073 int fd; 1074 union { 1075 u_int nunits; 1076 char pad[516]; /* XXX - must be at least 513; is 516 1077 in "atmgetunits" */ 1078 } buf; 1079 char baname[2+1+1]; 1080 u_int i; 1081 1082 /* 1083 * We may have to do special magic to get ATM devices. 1084 */ 1085 if ((fd = open("/dev/ba", O_RDWR)) < 0) { 1086 /* 1087 * We couldn't open the "ba" device. 1088 * For now, just give up; perhaps we should 1089 * return an error if the problem is neither 1090 * a "that device doesn't exist" error (ENOENT, 1091 * ENXIO, etc.) or a "you're not allowed to do 1092 * that" error (EPERM, EACCES). 1093 */ 1094 return (0); 1095 } 1096 1097 if (strioctl(fd, A_GET_UNITS, sizeof(buf), (char *)&buf) < 0) { 1098 snprintf(errbuf, PCAP_ERRBUF_SIZE, "A_GET_UNITS: %s", 1099 pcap_strerror(errno)); 1100 return (-1); 1101 } 1102 for (i = 0; i < buf.nunits; i++) { 1103 snprintf(baname, sizeof baname, "ba%u", i); 1104 if (pcap_add_if(alldevsp, baname, 0, NULL, errbuf) < 0) 1105 return (-1); 1106 } 1107 #endif 1108 1109 return (0); 1110 } 1111 1112 static int 1113 send_request(int fd, char *ptr, int len, char *what, char *ebuf) 1114 { 1115 struct strbuf ctl; 1116 int flags; 1117 1118 ctl.maxlen = 0; 1119 ctl.len = len; 1120 ctl.buf = ptr; 1121 1122 flags = 0; 1123 if (putmsg(fd, &ctl, (struct strbuf *) NULL, flags) < 0) { 1124 snprintf(ebuf, PCAP_ERRBUF_SIZE, 1125 "send_request: putmsg \"%s\": %s", 1126 what, pcap_strerror(errno)); 1127 return (-1); 1128 } 1129 return (0); 1130 } 1131 1132 static int 1133 recv_ack(int fd, int size, const char *what, char *bufp, char *ebuf, int *uerror) 1134 { 1135 union DL_primitives *dlp; 1136 struct strbuf ctl; 1137 int flags; 1138 1139 /* 1140 * Clear out "*uerror", so it's only set for DL_ERROR_ACK/DL_SYSERR, 1141 * making that the only place where EBUSY is treated specially. 1142 */ 1143 if (uerror != NULL) 1144 *uerror = 0; 1145 1146 ctl.maxlen = MAXDLBUF; 1147 ctl.len = 0; 1148 ctl.buf = bufp; 1149 1150 flags = 0; 1151 if (getmsg(fd, &ctl, (struct strbuf*)NULL, &flags) < 0) { 1152 snprintf(ebuf, PCAP_ERRBUF_SIZE, "recv_ack: %s getmsg: %s", 1153 what, pcap_strerror(errno)); 1154 return (-1); 1155 } 1156 1157 dlp = (union DL_primitives *) ctl.buf; 1158 switch (dlp->dl_primitive) { 1159 1160 case DL_INFO_ACK: 1161 case DL_BIND_ACK: 1162 case DL_OK_ACK: 1163 #ifdef DL_HP_PPA_ACK 1164 case DL_HP_PPA_ACK: 1165 #endif 1166 /* These are OK */ 1167 break; 1168 1169 case DL_ERROR_ACK: 1170 switch (dlp->error_ack.dl_errno) { 1171 1172 case DL_SYSERR: 1173 if (uerror != NULL) 1174 *uerror = dlp->error_ack.dl_unix_errno; 1175 snprintf(ebuf, PCAP_ERRBUF_SIZE, 1176 "recv_ack: %s: UNIX error - %s", 1177 what, pcap_strerror(dlp->error_ack.dl_unix_errno)); 1178 break; 1179 1180 default: 1181 snprintf(ebuf, PCAP_ERRBUF_SIZE, "recv_ack: %s: %s", 1182 what, dlstrerror(dlp->error_ack.dl_errno)); 1183 break; 1184 } 1185 return (-1); 1186 1187 default: 1188 snprintf(ebuf, PCAP_ERRBUF_SIZE, 1189 "recv_ack: %s: Unexpected primitive ack %s", 1190 what, dlprim(dlp->dl_primitive)); 1191 return (-1); 1192 } 1193 1194 if (ctl.len < size) { 1195 snprintf(ebuf, PCAP_ERRBUF_SIZE, 1196 "recv_ack: %s: Ack too small (%d < %d)", 1197 what, ctl.len, size); 1198 return (-1); 1199 } 1200 return (ctl.len); 1201 } 1202 1203 static char * 1204 dlstrerror(bpf_u_int32 dl_errno) 1205 { 1206 static char errstring[6+2+8+1]; 1207 1208 switch (dl_errno) { 1209 1210 case DL_ACCESS: 1211 return ("Improper permissions for request"); 1212 1213 case DL_BADADDR: 1214 return ("DLSAP addr in improper format or invalid"); 1215 1216 case DL_BADCORR: 1217 return ("Seq number not from outstand DL_CONN_IND"); 1218 1219 case DL_BADDATA: 1220 return ("User data exceeded provider limit"); 1221 1222 case DL_BADPPA: 1223 #ifdef HAVE_DEV_DLPI 1224 /* 1225 * With a single "/dev/dlpi" device used for all 1226 * DLPI providers, PPAs have nothing to do with 1227 * unit numbers. 1228 */ 1229 return ("Specified PPA was invalid"); 1230 #else 1231 /* 1232 * We have separate devices for separate devices; 1233 * the PPA is just the unit number. 1234 */ 1235 return ("Specified PPA (device unit) was invalid"); 1236 #endif 1237 1238 case DL_BADPRIM: 1239 return ("Primitive received not known by provider"); 1240 1241 case DL_BADQOSPARAM: 1242 return ("QOS parameters contained invalid values"); 1243 1244 case DL_BADQOSTYPE: 1245 return ("QOS structure type is unknown/unsupported"); 1246 1247 case DL_BADSAP: 1248 return ("Bad LSAP selector"); 1249 1250 case DL_BADTOKEN: 1251 return ("Token used not an active stream"); 1252 1253 case DL_BOUND: 1254 return ("Attempted second bind with dl_max_conind"); 1255 1256 case DL_INITFAILED: 1257 return ("Physical link initialization failed"); 1258 1259 case DL_NOADDR: 1260 return ("Provider couldn't allocate alternate address"); 1261 1262 case DL_NOTINIT: 1263 return ("Physical link not initialized"); 1264 1265 case DL_OUTSTATE: 1266 return ("Primitive issued in improper state"); 1267 1268 case DL_SYSERR: 1269 return ("UNIX system error occurred"); 1270 1271 case DL_UNSUPPORTED: 1272 return ("Requested service not supplied by provider"); 1273 1274 case DL_UNDELIVERABLE: 1275 return ("Previous data unit could not be delivered"); 1276 1277 case DL_NOTSUPPORTED: 1278 return ("Primitive is known but not supported"); 1279 1280 case DL_TOOMANY: 1281 return ("Limit exceeded"); 1282 1283 case DL_NOTENAB: 1284 return ("Promiscuous mode not enabled"); 1285 1286 case DL_BUSY: 1287 return ("Other streams for PPA in post-attached"); 1288 1289 case DL_NOAUTO: 1290 return ("Automatic handling XID&TEST not supported"); 1291 1292 case DL_NOXIDAUTO: 1293 return ("Automatic handling of XID not supported"); 1294 1295 case DL_NOTESTAUTO: 1296 return ("Automatic handling of TEST not supported"); 1297 1298 case DL_XIDAUTO: 1299 return ("Automatic handling of XID response"); 1300 1301 case DL_TESTAUTO: 1302 return ("Automatic handling of TEST response"); 1303 1304 case DL_PENDING: 1305 return ("Pending outstanding connect indications"); 1306 1307 default: 1308 sprintf(errstring, "Error %02x", dl_errno); 1309 return (errstring); 1310 } 1311 } 1312 1313 static char * 1314 dlprim(bpf_u_int32 prim) 1315 { 1316 static char primbuf[80]; 1317 1318 switch (prim) { 1319 1320 case DL_INFO_REQ: 1321 return ("DL_INFO_REQ"); 1322 1323 case DL_INFO_ACK: 1324 return ("DL_INFO_ACK"); 1325 1326 case DL_ATTACH_REQ: 1327 return ("DL_ATTACH_REQ"); 1328 1329 case DL_DETACH_REQ: 1330 return ("DL_DETACH_REQ"); 1331 1332 case DL_BIND_REQ: 1333 return ("DL_BIND_REQ"); 1334 1335 case DL_BIND_ACK: 1336 return ("DL_BIND_ACK"); 1337 1338 case DL_UNBIND_REQ: 1339 return ("DL_UNBIND_REQ"); 1340 1341 case DL_OK_ACK: 1342 return ("DL_OK_ACK"); 1343 1344 case DL_ERROR_ACK: 1345 return ("DL_ERROR_ACK"); 1346 1347 case DL_SUBS_BIND_REQ: 1348 return ("DL_SUBS_BIND_REQ"); 1349 1350 case DL_SUBS_BIND_ACK: 1351 return ("DL_SUBS_BIND_ACK"); 1352 1353 case DL_UNITDATA_REQ: 1354 return ("DL_UNITDATA_REQ"); 1355 1356 case DL_UNITDATA_IND: 1357 return ("DL_UNITDATA_IND"); 1358 1359 case DL_UDERROR_IND: 1360 return ("DL_UDERROR_IND"); 1361 1362 case DL_UDQOS_REQ: 1363 return ("DL_UDQOS_REQ"); 1364 1365 case DL_CONNECT_REQ: 1366 return ("DL_CONNECT_REQ"); 1367 1368 case DL_CONNECT_IND: 1369 return ("DL_CONNECT_IND"); 1370 1371 case DL_CONNECT_RES: 1372 return ("DL_CONNECT_RES"); 1373 1374 case DL_CONNECT_CON: 1375 return ("DL_CONNECT_CON"); 1376 1377 case DL_TOKEN_REQ: 1378 return ("DL_TOKEN_REQ"); 1379 1380 case DL_TOKEN_ACK: 1381 return ("DL_TOKEN_ACK"); 1382 1383 case DL_DISCONNECT_REQ: 1384 return ("DL_DISCONNECT_REQ"); 1385 1386 case DL_DISCONNECT_IND: 1387 return ("DL_DISCONNECT_IND"); 1388 1389 case DL_RESET_REQ: 1390 return ("DL_RESET_REQ"); 1391 1392 case DL_RESET_IND: 1393 return ("DL_RESET_IND"); 1394 1395 case DL_RESET_RES: 1396 return ("DL_RESET_RES"); 1397 1398 case DL_RESET_CON: 1399 return ("DL_RESET_CON"); 1400 1401 default: 1402 (void) sprintf(primbuf, "unknown primitive 0x%x", prim); 1403 return (primbuf); 1404 } 1405 } 1406 1407 static int 1408 dlattachreq(int fd, bpf_u_int32 ppa, char *ebuf) 1409 { 1410 dl_attach_req_t req; 1411 1412 req.dl_primitive = DL_ATTACH_REQ; 1413 req.dl_ppa = ppa; 1414 1415 return (send_request(fd, (char *)&req, sizeof(req), "attach", ebuf)); 1416 } 1417 1418 static int 1419 dlbindreq(int fd, bpf_u_int32 sap, char *ebuf) 1420 { 1421 1422 dl_bind_req_t req; 1423 1424 memset((char *)&req, 0, sizeof(req)); 1425 req.dl_primitive = DL_BIND_REQ; 1426 /* XXX - what if neither of these are defined? */ 1427 #if defined(DL_HP_RAWDLS) 1428 req.dl_max_conind = 1; /* XXX magic number */ 1429 req.dl_service_mode = DL_HP_RAWDLS; 1430 #elif defined(DL_CLDLS) 1431 req.dl_service_mode = DL_CLDLS; 1432 #endif 1433 req.dl_sap = sap; 1434 1435 return (send_request(fd, (char *)&req, sizeof(req), "bind", ebuf)); 1436 } 1437 1438 static int 1439 dlbindack(int fd, char *bufp, char *ebuf, int *uerror) 1440 { 1441 1442 return (recv_ack(fd, DL_BIND_ACK_SIZE, "bind", bufp, ebuf, uerror)); 1443 } 1444 1445 static int 1446 dlpromisconreq(int fd, bpf_u_int32 level, char *ebuf) 1447 { 1448 dl_promiscon_req_t req; 1449 1450 req.dl_primitive = DL_PROMISCON_REQ; 1451 req.dl_level = level; 1452 1453 return (send_request(fd, (char *)&req, sizeof(req), "promiscon", ebuf)); 1454 } 1455 1456 static int 1457 dlokack(int fd, const char *what, char *bufp, char *ebuf) 1458 { 1459 1460 return (recv_ack(fd, DL_OK_ACK_SIZE, what, bufp, ebuf, NULL)); 1461 } 1462 1463 1464 static int 1465 dlinforeq(int fd, char *ebuf) 1466 { 1467 dl_info_req_t req; 1468 1469 req.dl_primitive = DL_INFO_REQ; 1470 1471 return (send_request(fd, (char *)&req, sizeof(req), "info", ebuf)); 1472 } 1473 1474 static int 1475 dlinfoack(int fd, char *bufp, char *ebuf) 1476 { 1477 1478 return (recv_ack(fd, DL_INFO_ACK_SIZE, "info", bufp, ebuf, NULL)); 1479 } 1480 1481 #ifdef DL_HP_RAWDLS 1482 /* 1483 * There's an ack *if* there's an error. 1484 */ 1485 static int 1486 dlrawdatareq(int fd, const u_char *datap, int datalen) 1487 { 1488 struct strbuf ctl, data; 1489 long buf[MAXDLBUF]; /* XXX - char? */ 1490 union DL_primitives *dlp; 1491 int dlen; 1492 1493 dlp = (union DL_primitives*) buf; 1494 1495 dlp->dl_primitive = DL_HP_RAWDATA_REQ; 1496 dlen = DL_HP_RAWDATA_REQ_SIZE; 1497 1498 /* 1499 * HP's documentation doesn't appear to show us supplying any 1500 * address pointed to by the control part of the message. 1501 * I think that's what raw mode means - you just send the raw 1502 * packet, you don't specify where to send it to, as that's 1503 * implied by the destination address. 1504 */ 1505 ctl.maxlen = 0; 1506 ctl.len = dlen; 1507 ctl.buf = (void *)buf; 1508 1509 data.maxlen = 0; 1510 data.len = datalen; 1511 data.buf = (void *)datap; 1512 1513 return (putmsg(fd, &ctl, &data, 0)); 1514 } 1515 #endif /* DL_HP_RAWDLS */ 1516 1517 #ifdef HAVE_SYS_BUFMOD_H 1518 static int 1519 strioctl(int fd, int cmd, int len, char *dp) 1520 { 1521 struct strioctl str; 1522 int rc; 1523 1524 str.ic_cmd = cmd; 1525 str.ic_timout = -1; 1526 str.ic_len = len; 1527 str.ic_dp = dp; 1528 rc = ioctl(fd, I_STR, &str); 1529 1530 if (rc < 0) 1531 return (rc); 1532 else 1533 return (str.ic_len); 1534 } 1535 #endif 1536 1537 #if defined(HAVE_SOLARIS) && defined(HAVE_SYS_BUFMOD_H) 1538 static char * 1539 get_release(bpf_u_int32 *majorp, bpf_u_int32 *minorp, bpf_u_int32 *microp) 1540 { 1541 char *cp; 1542 static char buf[32]; 1543 1544 *majorp = 0; 1545 *minorp = 0; 1546 *microp = 0; 1547 if (sysinfo(SI_RELEASE, buf, sizeof(buf)) < 0) 1548 return ("?"); 1549 cp = buf; 1550 if (!isdigit((unsigned char)*cp)) 1551 return (buf); 1552 *majorp = strtol(cp, &cp, 10); 1553 if (*cp++ != '.') 1554 return (buf); 1555 *minorp = strtol(cp, &cp, 10); 1556 if (*cp++ != '.') 1557 return (buf); 1558 *microp = strtol(cp, &cp, 10); 1559 return (buf); 1560 } 1561 #endif 1562 1563 #ifdef DL_HP_PPA_REQ 1564 /* 1565 * Under HP-UX 10 and HP-UX 11, we can ask for the ppa 1566 */ 1567 1568 1569 /* 1570 * Determine ppa number that specifies ifname. 1571 * 1572 * If the "dl_hp_ppa_info_t" doesn't have a "dl_module_id_1" member, 1573 * the code that's used here is the old code for HP-UX 10.x. 1574 * 1575 * However, HP-UX 10.20, at least, appears to have such a member 1576 * in its "dl_hp_ppa_info_t" structure, so the new code is used. 1577 * The new code didn't work on an old 10.20 system on which Rick 1578 * Jones of HP tried it, but with later patches installed, it 1579 * worked - it appears that the older system had those members but 1580 * didn't put anything in them, so, if the search by name fails, we 1581 * do the old search. 1582 * 1583 * Rick suggests that making sure your system is "up on the latest 1584 * lancommon/DLPI/driver patches" is probably a good idea; it'd fix 1585 * that problem, as well as allowing libpcap to see packets sent 1586 * from the system on which the libpcap application is being run. 1587 * (On 10.20, in addition to getting the latest patches, you need 1588 * to turn the kernel "lanc_outbound_promisc_flag" flag on with ADB; 1589 * a posting to "comp.sys.hp.hpux" at 1590 * 1591 * http://www.deja.com/[ST_rn=ps]/getdoc.xp?AN=558092266 1592 * 1593 * says that, to see the machine's outgoing traffic, you'd need to 1594 * apply the right patches to your system, and also set that variable 1595 * with: 1596 1597 echo 'lanc_outbound_promisc_flag/W1' | /usr/bin/adb -w /stand/vmunix /dev/kmem 1598 1599 * which could be put in, for example, "/sbin/init.d/lan". 1600 * 1601 * Setting the variable is not necessary on HP-UX 11.x. 1602 */ 1603 static int 1604 get_dlpi_ppa(register int fd, register const char *device, register int unit, 1605 register char *ebuf) 1606 { 1607 register dl_hp_ppa_ack_t *ap; 1608 register dl_hp_ppa_info_t *ipstart, *ip; 1609 register int i; 1610 char dname[100]; 1611 register u_long majdev; 1612 struct stat statbuf; 1613 dl_hp_ppa_req_t req; 1614 char buf[MAXDLBUF]; 1615 char *ppa_data_buf; 1616 dl_hp_ppa_ack_t *dlp; 1617 struct strbuf ctl; 1618 int flags; 1619 int ppa; 1620 1621 memset((char *)&req, 0, sizeof(req)); 1622 req.dl_primitive = DL_HP_PPA_REQ; 1623 1624 memset((char *)buf, 0, sizeof(buf)); 1625 if (send_request(fd, (char *)&req, sizeof(req), "hpppa", ebuf) < 0) 1626 return (-1); 1627 1628 ctl.maxlen = DL_HP_PPA_ACK_SIZE; 1629 ctl.len = 0; 1630 ctl.buf = (char *)buf; 1631 1632 flags = 0; 1633 /* 1634 * DLPI may return a big chunk of data for a DL_HP_PPA_REQ. The normal 1635 * recv_ack will fail because it set the maxlen to MAXDLBUF (8192) 1636 * which is NOT big enough for a DL_HP_PPA_REQ. 1637 * 1638 * This causes libpcap applications to fail on a system with HP-APA 1639 * installed. 1640 * 1641 * To figure out how big the returned data is, we first call getmsg 1642 * to get the small head and peek at the head to get the actual data 1643 * length, and then issue another getmsg to get the actual PPA data. 1644 */ 1645 /* get the head first */ 1646 if (getmsg(fd, &ctl, (struct strbuf *)NULL, &flags) < 0) { 1647 snprintf(ebuf, PCAP_ERRBUF_SIZE, 1648 "get_dlpi_ppa: hpppa getmsg: %s", pcap_strerror(errno)); 1649 return (-1); 1650 } 1651 1652 dlp = (dl_hp_ppa_ack_t *)ctl.buf; 1653 if (dlp->dl_primitive != DL_HP_PPA_ACK) { 1654 snprintf(ebuf, PCAP_ERRBUF_SIZE, 1655 "get_dlpi_ppa: hpppa unexpected primitive ack 0x%x", 1656 (bpf_u_int32)dlp->dl_primitive); 1657 return (-1); 1658 } 1659 1660 if (ctl.len < DL_HP_PPA_ACK_SIZE) { 1661 snprintf(ebuf, PCAP_ERRBUF_SIZE, 1662 "get_dlpi_ppa: hpppa ack too small (%d < %lu)", 1663 ctl.len, (unsigned long)DL_HP_PPA_ACK_SIZE); 1664 return (-1); 1665 } 1666 1667 /* allocate buffer */ 1668 if ((ppa_data_buf = (char *)malloc(dlp->dl_length)) == NULL) { 1669 snprintf(ebuf, PCAP_ERRBUF_SIZE, 1670 "get_dlpi_ppa: hpppa malloc: %s", pcap_strerror(errno)); 1671 return (-1); 1672 } 1673 ctl.maxlen = dlp->dl_length; 1674 ctl.len = 0; 1675 ctl.buf = (char *)ppa_data_buf; 1676 /* get the data */ 1677 if (getmsg(fd, &ctl, (struct strbuf *)NULL, &flags) < 0) { 1678 snprintf(ebuf, PCAP_ERRBUF_SIZE, 1679 "get_dlpi_ppa: hpppa getmsg: %s", pcap_strerror(errno)); 1680 free(ppa_data_buf); 1681 return (-1); 1682 } 1683 if (ctl.len < dlp->dl_length) { 1684 snprintf(ebuf, PCAP_ERRBUF_SIZE, 1685 "get_dlpi_ppa: hpppa ack too small (%d < %d)", 1686 ctl.len, dlp->dl_length); 1687 free(ppa_data_buf); 1688 return (-1); 1689 } 1690 1691 ap = (dl_hp_ppa_ack_t *)buf; 1692 ipstart = (dl_hp_ppa_info_t *)ppa_data_buf; 1693 ip = ipstart; 1694 1695 #ifdef HAVE_HP_PPA_INFO_T_DL_MODULE_ID_1 1696 /* 1697 * The "dl_hp_ppa_info_t" structure has a "dl_module_id_1" 1698 * member that should, in theory, contain the part of the 1699 * name for the device that comes before the unit number, 1700 * and should also have a "dl_module_id_2" member that may 1701 * contain an alternate name (e.g., I think Ethernet devices 1702 * have both "lan", for "lanN", and "snap", for "snapN", with 1703 * the former being for Ethernet packets and the latter being 1704 * for 802.3/802.2 packets). 1705 * 1706 * Search for the device that has the specified name and 1707 * instance number. 1708 */ 1709 for (i = 0; i < ap->dl_count; i++) { 1710 if ((strcmp((const char *)ip->dl_module_id_1, device) == 0 || 1711 strcmp((const char *)ip->dl_module_id_2, device) == 0) && 1712 ip->dl_instance_num == unit) 1713 break; 1714 1715 ip = (dl_hp_ppa_info_t *)((u_char *)ipstart + ip->dl_next_offset); 1716 } 1717 #else 1718 /* 1719 * We don't have that member, so the search is impossible; make it 1720 * look as if the search failed. 1721 */ 1722 i = ap->dl_count; 1723 #endif 1724 1725 if (i == ap->dl_count) { 1726 /* 1727 * Well, we didn't, or can't, find the device by name. 1728 * 1729 * HP-UX 10.20, whilst it has "dl_module_id_1" and 1730 * "dl_module_id_2" fields in the "dl_hp_ppa_info_t", 1731 * doesn't seem to fill them in unless the system is 1732 * at a reasonably up-to-date patch level. 1733 * 1734 * Older HP-UX 10.x systems might not have those fields 1735 * at all. 1736 * 1737 * Therefore, we'll search for the entry with the major 1738 * device number of a device with the name "/dev/<dev><unit>", 1739 * if such a device exists, as the old code did. 1740 */ 1741 snprintf(dname, sizeof(dname), "/dev/%s%d", device, unit); 1742 if (stat(dname, &statbuf) < 0) { 1743 snprintf(ebuf, PCAP_ERRBUF_SIZE, "stat: %s: %s", 1744 dname, pcap_strerror(errno)); 1745 return (-1); 1746 } 1747 majdev = major(statbuf.st_rdev); 1748 1749 ip = ipstart; 1750 1751 for (i = 0; i < ap->dl_count; i++) { 1752 if (ip->dl_mjr_num == majdev && 1753 ip->dl_instance_num == unit) 1754 break; 1755 1756 ip = (dl_hp_ppa_info_t *)((u_char *)ipstart + ip->dl_next_offset); 1757 } 1758 } 1759 if (i == ap->dl_count) { 1760 snprintf(ebuf, PCAP_ERRBUF_SIZE, 1761 "can't find /dev/dlpi PPA for %s%d", device, unit); 1762 return (-1); 1763 } 1764 if (ip->dl_hdw_state == HDW_DEAD) { 1765 snprintf(ebuf, PCAP_ERRBUF_SIZE, 1766 "%s%d: hardware state: DOWN\n", device, unit); 1767 free(ppa_data_buf); 1768 return (-1); 1769 } 1770 ppa = ip->dl_ppa; 1771 free(ppa_data_buf); 1772 return (ppa); 1773 } 1774 #endif 1775 1776 #ifdef HAVE_HPUX9 1777 /* 1778 * Under HP-UX 9, there is no good way to determine the ppa. 1779 * So punt and read it from /dev/kmem. 1780 */ 1781 static struct nlist nl[] = { 1782 #define NL_IFNET 0 1783 { "ifnet" }, 1784 { "" } 1785 }; 1786 1787 static char path_vmunix[] = "/hp-ux"; 1788 1789 /* Determine ppa number that specifies ifname */ 1790 static int 1791 get_dlpi_ppa(register int fd, register const char *ifname, register int unit, 1792 register char *ebuf) 1793 { 1794 register const char *cp; 1795 register int kd; 1796 void *addr; 1797 struct ifnet ifnet; 1798 char if_name[sizeof(ifnet.if_name) + 1]; 1799 1800 cp = strrchr(ifname, '/'); 1801 if (cp != NULL) 1802 ifname = cp + 1; 1803 if (nlist(path_vmunix, &nl) < 0) { 1804 snprintf(ebuf, PCAP_ERRBUF_SIZE, "nlist %s failed", 1805 path_vmunix); 1806 return (-1); 1807 } 1808 if (nl[NL_IFNET].n_value == 0) { 1809 snprintf(ebuf, PCAP_ERRBUF_SIZE, 1810 "could't find %s kernel symbol", 1811 nl[NL_IFNET].n_name); 1812 return (-1); 1813 } 1814 kd = open("/dev/kmem", O_RDONLY); 1815 if (kd < 0) { 1816 snprintf(ebuf, PCAP_ERRBUF_SIZE, "kmem open: %s", 1817 pcap_strerror(errno)); 1818 return (-1); 1819 } 1820 if (dlpi_kread(kd, nl[NL_IFNET].n_value, 1821 &addr, sizeof(addr), ebuf) < 0) { 1822 close(kd); 1823 return (-1); 1824 } 1825 for (; addr != NULL; addr = ifnet.if_next) { 1826 if (dlpi_kread(kd, (off_t)addr, 1827 &ifnet, sizeof(ifnet), ebuf) < 0 || 1828 dlpi_kread(kd, (off_t)ifnet.if_name, 1829 if_name, sizeof(ifnet.if_name), ebuf) < 0) { 1830 (void)close(kd); 1831 return (-1); 1832 } 1833 if_name[sizeof(ifnet.if_name)] = '\0'; 1834 if (strcmp(if_name, ifname) == 0 && ifnet.if_unit == unit) 1835 return (ifnet.if_index); 1836 } 1837 1838 snprintf(ebuf, PCAP_ERRBUF_SIZE, "Can't find %s", ifname); 1839 return (-1); 1840 } 1841 1842 static int 1843 dlpi_kread(register int fd, register off_t addr, 1844 register void *buf, register u_int len, register char *ebuf) 1845 { 1846 register int cc; 1847 1848 if (lseek(fd, addr, SEEK_SET) < 0) { 1849 snprintf(ebuf, PCAP_ERRBUF_SIZE, "lseek: %s", 1850 pcap_strerror(errno)); 1851 return (-1); 1852 } 1853 cc = read(fd, buf, len); 1854 if (cc < 0) { 1855 snprintf(ebuf, PCAP_ERRBUF_SIZE, "read: %s", 1856 pcap_strerror(errno)); 1857 return (-1); 1858 } else if (cc != len) { 1859 snprintf(ebuf, PCAP_ERRBUF_SIZE, "short read (%d != %d)", cc, 1860 len); 1861 return (-1); 1862 } 1863 return (cc); 1864 } 1865 #endif 1866