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. 23 */ 24 25 /* 26 * Packet capture routine for dlpi under SunOS 5 27 * 28 * Notes: 29 * 30 * - Apparently the DLIOCRAW ioctl() is specific to SunOS. 31 * 32 * - There is a bug in bufmod(7) such that setting the snapshot 33 * length results in data being left of the front of the packet. 34 * 35 * - It might be desirable to use pfmod(7) to filter packets in the 36 * kernel. 37 */ 38 39 #ifndef lint 40 static const char rcsid[] = 41 "@(#) $Header: /tcpdump/master/libpcap/pcap-dlpi.c,v 1.63 2000/11/22 05:32:55 guy Exp $ (LBL)"; 42 #endif 43 44 #ifdef HAVE_CONFIG_H 45 #include "config.h" 46 #endif 47 48 #include <sys/types.h> 49 #include <sys/time.h> 50 #ifdef HAVE_SYS_BUFMOD_H 51 #include <sys/bufmod.h> 52 #endif 53 #include <sys/dlpi.h> 54 #ifdef HAVE_SYS_DLPI_EXT_H 55 #include <sys/dlpi_ext.h> 56 #endif 57 #ifdef HAVE_HPUX9 58 #include <sys/socket.h> 59 #endif 60 #ifdef DL_HP_PPA_ACK_OBS 61 #include <sys/stat.h> 62 #endif 63 #include <sys/stream.h> 64 #if defined(HAVE_SOLARIS) && defined(HAVE_SYS_BUFMOD_H) 65 #include <sys/systeminfo.h> 66 #endif 67 68 #ifdef HAVE_HPUX9 69 #include <net/if.h> 70 #endif 71 72 #include <ctype.h> 73 #ifdef HAVE_HPUX9 74 #include <nlist.h> 75 #endif 76 #include <errno.h> 77 #include <fcntl.h> 78 #include <memory.h> 79 #include <stdio.h> 80 #include <stdlib.h> 81 #include <string.h> 82 #include <stropts.h> 83 #include <unistd.h> 84 85 #include "pcap-int.h" 86 87 #ifdef HAVE_OS_PROTO_H 88 #include "os-proto.h" 89 #endif 90 91 #ifndef PCAP_DEV_PREFIX 92 #define PCAP_DEV_PREFIX "/dev" 93 #endif 94 95 #define MAXDLBUF 8192 96 97 /* Forwards */ 98 static int dlattachreq(int, bpf_u_int32, char *); 99 static int dlbindack(int, char *, char *); 100 static int dlbindreq(int, bpf_u_int32, char *); 101 static int dlinfoack(int, char *, char *); 102 static int dlinforeq(int, char *); 103 static int dlokack(int, const char *, char *, char *); 104 static int recv_ack(int, int, const char *, char *, char *); 105 static int dlpromisconreq(int, bpf_u_int32, char *); 106 #if defined(HAVE_SOLARIS) && defined(HAVE_SYS_BUFMOD_H) 107 static char *get_release(bpf_u_int32 *, bpf_u_int32 *, bpf_u_int32 *); 108 #endif 109 static int send_request(int, char *, int, char *, char *); 110 #ifdef HAVE_SYS_BUFMOD_H 111 static int strioctl(int, int, int, char *); 112 #endif 113 #ifdef HAVE_HPUX9 114 static int dlpi_kread(int, off_t, void *, u_int, char *); 115 #endif 116 #ifdef HAVE_DEV_DLPI 117 static int get_dlpi_ppa(int, const char *, int, char *); 118 #endif 119 120 int 121 pcap_stats(pcap_t *p, struct pcap_stat *ps) 122 { 123 124 *ps = p->md.stat; 125 return (0); 126 } 127 128 /* XXX Needed by HP-UX (at least) */ 129 static bpf_u_int32 ctlbuf[MAXDLBUF]; 130 static struct strbuf ctl = { 131 MAXDLBUF, 132 0, 133 (char *)ctlbuf 134 }; 135 136 int 137 pcap_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user) 138 { 139 register int cc, n, caplen, origlen; 140 register u_char *bp, *ep, *pk; 141 register struct bpf_insn *fcode; 142 #ifdef HAVE_SYS_BUFMOD_H 143 register struct sb_hdr *sbp; 144 #ifdef LBL_ALIGN 145 struct sb_hdr sbhdr; 146 #endif 147 #endif 148 int flags; 149 struct strbuf data; 150 struct pcap_pkthdr pkthdr; 151 152 flags = 0; 153 cc = p->cc; 154 if (cc == 0) { 155 data.buf = (char *)p->buffer + p->offset; 156 data.maxlen = MAXDLBUF; 157 data.len = 0; 158 do { 159 if (getmsg(p->fd, &ctl, &data, &flags) < 0) { 160 /* Don't choke when we get ptraced */ 161 if (errno == EINTR) { 162 cc = 0; 163 continue; 164 } 165 strlcpy(p->errbuf, pcap_strerror(errno), 166 sizeof(p->errbuf)); 167 return (-1); 168 } 169 cc = data.len; 170 } while (cc == 0); 171 bp = p->buffer + p->offset; 172 } else 173 bp = p->bp; 174 175 /* Loop through packets */ 176 fcode = p->fcode.bf_insns; 177 ep = bp + cc; 178 n = 0; 179 #ifdef HAVE_SYS_BUFMOD_H 180 while (bp < ep) { 181 #ifdef LBL_ALIGN 182 if ((long)bp & 3) { 183 sbp = &sbhdr; 184 memcpy(sbp, bp, sizeof(*sbp)); 185 } else 186 #endif 187 sbp = (struct sb_hdr *)bp; 188 p->md.stat.ps_drop += sbp->sbh_drops; 189 pk = bp + sizeof(*sbp); 190 bp += sbp->sbh_totlen; 191 origlen = sbp->sbh_origlen; 192 caplen = sbp->sbh_msglen; 193 #else 194 origlen = cc; 195 caplen = min(p->snapshot, cc); 196 pk = bp; 197 bp += caplen; 198 #endif 199 ++p->md.stat.ps_recv; 200 if (bpf_filter(fcode, pk, origlen, caplen)) { 201 #ifdef HAVE_SYS_BUFMOD_H 202 pkthdr.ts = sbp->sbh_timestamp; 203 #else 204 (void)gettimeofday(&pkthdr.ts, NULL); 205 #endif 206 pkthdr.len = origlen; 207 pkthdr.caplen = caplen; 208 /* Insure caplen does not exceed snapshot */ 209 if (pkthdr.caplen > p->snapshot) 210 pkthdr.caplen = p->snapshot; 211 (*callback)(user, &pkthdr, pk); 212 if (++n >= cnt && cnt >= 0) { 213 p->cc = ep - bp; 214 p->bp = bp; 215 return (n); 216 } 217 } 218 #ifdef HAVE_SYS_BUFMOD_H 219 } 220 #endif 221 p->cc = 0; 222 return (n); 223 } 224 225 pcap_t * 226 pcap_open_live(char *device, int snaplen, int promisc, int to_ms, char *ebuf) 227 { 228 register char *cp; 229 char *eos; 230 register pcap_t *p; 231 register int ppa; 232 register dl_info_ack_t *infop; 233 #ifdef HAVE_SYS_BUFMOD_H 234 bpf_u_int32 ss, flag; 235 #ifdef HAVE_SOLARIS 236 register char *release; 237 bpf_u_int32 osmajor, osminor, osmicro; 238 #endif 239 #endif 240 bpf_u_int32 buf[MAXDLBUF]; 241 char dname[100]; 242 #ifndef HAVE_DEV_DLPI 243 char dname2[100]; 244 #endif 245 246 p = (pcap_t *)malloc(sizeof(*p)); 247 if (p == NULL) { 248 strlcpy(ebuf, pcap_strerror(errno), PCAP_ERRBUF_SIZE); 249 return (NULL); 250 } 251 memset(p, 0, sizeof(*p)); 252 253 #ifdef HAVE_DEV_DLPI 254 /* 255 ** Remove any "/dev/" on the front of the device. 256 */ 257 cp = strrchr(device, '/'); 258 if (cp == NULL) 259 cp = device; 260 else 261 cp++; 262 strlcpy(dname, cp, sizeof(dname)); 263 264 /* 265 * Split the name into a device type and a unit number. 266 */ 267 cp = strpbrk(dname, "0123456789"); 268 if (cp == NULL) { 269 snprintf(ebuf, PCAP_ERRBUF_SIZE, 270 "%s missing unit number", device); 271 goto bad; 272 } 273 ppa = strtol(cp, &eos, 10); 274 if (*eos != '\0') { 275 snprintf(ebuf, PCAP_ERRBUF_SIZE, 276 "%s bad unit number", device); 277 goto bad; 278 } 279 *cp = '\0'; 280 281 /* 282 * Use "/dev/dlpi" as the device. 283 * 284 * XXX - HP's DLPI Programmer's Guide for HP-UX 11.00 says that 285 * the "dl_mjr_num" field is for the "major number of interface 286 * driver"; that's the major of "/dev/dlpi" on the system on 287 * which I tried this, but there may be DLPI devices that 288 * use a different driver, in which case we may need to 289 * search "/dev" for the appropriate device with that major 290 * device number, rather than hardwiring "/dev/dlpi". 291 */ 292 cp = "/dev/dlpi"; 293 if ((p->fd = open(cp, O_RDWR)) < 0) { 294 snprintf(ebuf, PCAP_ERRBUF_SIZE, 295 "%s: %s", cp, pcap_strerror(errno)); 296 goto bad; 297 } 298 299 /* 300 * Get a table of all PPAs for that device, and search that 301 * table for the specified device type name and unit number. 302 */ 303 ppa = get_dlpi_ppa(p->fd, dname, ppa, ebuf); 304 if (ppa < 0) 305 goto bad; 306 #else 307 /* 308 ** Determine device and ppa 309 */ 310 cp = strpbrk(device, "0123456789"); 311 if (cp == NULL) { 312 snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s missing unit number", 313 device); 314 goto bad; 315 } 316 ppa = strtol(cp, &eos, 10); 317 if (*eos != '\0') { 318 snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s bad unit number", device); 319 goto bad; 320 } 321 322 if (*device == '/') 323 strlcpy(dname, device, sizeof(dname)); 324 else 325 snprintf(dname, sizeof(dname), "%s/%s", PCAP_DEV_PREFIX, 326 device); 327 328 /* Try device without unit number */ 329 strlcpy(dname2, dname, sizeof(dname2)); 330 cp = strchr(dname, *cp); 331 *cp = '\0'; 332 if ((p->fd = open(dname, O_RDWR)) < 0) { 333 if (errno != ENOENT) { 334 snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s: %s", dname, 335 pcap_strerror(errno)); 336 goto bad; 337 } 338 339 /* Try again with unit number */ 340 if ((p->fd = open(dname2, O_RDWR)) < 0) { 341 snprintf(ebuf, PCAP_ERRBUF_SIZE, "%s: %s", dname2, 342 pcap_strerror(errno)); 343 goto bad; 344 } 345 /* XXX Assume unit zero */ 346 ppa = 0; 347 } 348 #endif 349 350 p->snapshot = snaplen; 351 352 /* 353 ** Attach if "style 2" provider 354 */ 355 if (dlinforeq(p->fd, ebuf) < 0 || 356 dlinfoack(p->fd, (char *)buf, ebuf) < 0) 357 goto bad; 358 infop = &((union DL_primitives *)buf)->info_ack; 359 if (infop->dl_provider_style == DL_STYLE2 && 360 (dlattachreq(p->fd, ppa, ebuf) < 0 || 361 dlokack(p->fd, "attach", (char *)buf, ebuf) < 0)) 362 goto bad; 363 /* 364 ** Bind (defer if using HP-UX 9 or HP-UX 10.20, totally skip if 365 ** using SINIX) 366 */ 367 #if !defined(HAVE_HPUX9) && !defined(HAVE_HPUX10_20) && !defined(sinix) 368 #ifdef _AIX 369 /* According to IBM's AIX Support Line, the dl_sap value 370 ** should not be less than 0x600 (1536) for standard ethernet 371 */ 372 if (dlbindreq(p->fd, 1537, ebuf) < 0 || 373 #else 374 if (dlbindreq(p->fd, 0, ebuf) < 0 || 375 #endif 376 dlbindack(p->fd, (char *)buf, ebuf) < 0) 377 goto bad; 378 #endif 379 380 if (promisc) { 381 /* 382 ** Enable promiscuous 383 */ 384 if (dlpromisconreq(p->fd, DL_PROMISC_PHYS, ebuf) < 0 || 385 dlokack(p->fd, "promisc_phys", (char *)buf, ebuf) < 0) 386 goto bad; 387 388 /* 389 ** Try to enable multicast (you would have thought 390 ** promiscuous would be sufficient). (Skip if using 391 ** HP-UX or SINIX) 392 */ 393 #if !defined(__hpux) && !defined(sinix) 394 if (dlpromisconreq(p->fd, DL_PROMISC_MULTI, ebuf) < 0 || 395 dlokack(p->fd, "promisc_multi", (char *)buf, ebuf) < 0) 396 fprintf(stderr, 397 "WARNING: DL_PROMISC_MULTI failed (%s)\n", ebuf); 398 #endif 399 } 400 /* 401 ** Try to enable sap (when not in promiscuous mode when using 402 ** using HP-UX and never under SINIX) 403 */ 404 #ifndef sinix 405 if ( 406 #ifdef __hpux 407 !promisc && 408 #endif 409 (dlpromisconreq(p->fd, DL_PROMISC_SAP, ebuf) < 0 || 410 dlokack(p->fd, "promisc_sap", (char *)buf, ebuf) < 0)) { 411 /* Not fatal if promisc since the DL_PROMISC_PHYS worked */ 412 if (promisc) 413 fprintf(stderr, 414 "WARNING: DL_PROMISC_SAP failed (%s)\n", ebuf); 415 else 416 goto bad; 417 } 418 #endif 419 420 /* 421 ** HP-UX 9 and HP-UX 10.20 must bind after setting promiscuous 422 ** options) 423 */ 424 #if defined(HAVE_HPUX9) || defined(HAVE_HPUX10_20) 425 if (dlbindreq(p->fd, 0, ebuf) < 0 || 426 dlbindack(p->fd, (char *)buf, ebuf) < 0) 427 goto bad; 428 #endif 429 430 /* 431 ** Determine link type 432 */ 433 if (dlinforeq(p->fd, ebuf) < 0 || 434 dlinfoack(p->fd, (char *)buf, ebuf) < 0) 435 goto bad; 436 437 infop = &((union DL_primitives *)buf)->info_ack; 438 switch (infop->dl_mac_type) { 439 440 case DL_CSMACD: 441 case DL_ETHER: 442 p->linktype = DLT_EN10MB; 443 p->offset = 2; 444 break; 445 446 case DL_FDDI: 447 p->linktype = DLT_FDDI; 448 p->offset = 3; 449 break; 450 451 default: 452 snprintf(ebuf, PCAP_ERRBUF_SIZE, "unknown mac type %lu", 453 infop->dl_mac_type); 454 goto bad; 455 } 456 457 #ifdef DLIOCRAW 458 /* 459 ** This is a non standard SunOS hack to get the ethernet header. 460 */ 461 if (strioctl(p->fd, DLIOCRAW, 0, NULL) < 0) { 462 snprintf(ebuf, PCAP_ERRBUF_SIZE, "DLIOCRAW: %s", 463 pcap_strerror(errno)); 464 goto bad; 465 } 466 #endif 467 468 #ifdef HAVE_SYS_BUFMOD_H 469 /* 470 ** Another non standard call to get the data nicely buffered 471 */ 472 if (ioctl(p->fd, I_PUSH, "bufmod") != 0) { 473 snprintf(ebuf, PCAP_ERRBUF_SIZE, "I_PUSH bufmod: %s", 474 pcap_strerror(errno)); 475 goto bad; 476 } 477 478 /* 479 ** Now that the bufmod is pushed lets configure it. 480 ** 481 ** There is a bug in bufmod(7). When dealing with messages of 482 ** less than snaplen size it strips data from the beginning not 483 ** the end. 484 ** 485 ** This bug is supposed to be fixed in 5.3.2. Also, there is a 486 ** patch available. Ask for bugid 1149065. 487 */ 488 ss = snaplen; 489 #ifdef HAVE_SOLARIS 490 release = get_release(&osmajor, &osminor, &osmicro); 491 if (osmajor == 5 && (osminor <= 2 || (osminor == 3 && osmicro < 2)) && 492 getenv("BUFMOD_FIXED") == NULL) { 493 fprintf(stderr, 494 "WARNING: bufmod is broken in SunOS %s; ignoring snaplen.\n", 495 release); 496 ss = 0; 497 } 498 #endif 499 if (ss > 0 && 500 strioctl(p->fd, SBIOCSSNAP, sizeof(ss), (char *)&ss) != 0) { 501 snprintf(ebuf, PCAP_ERRBUF_SIZE, "SBIOCSSNAP: %s", 502 pcap_strerror(errno)); 503 goto bad; 504 } 505 506 /* 507 ** Set up the bufmod flags 508 */ 509 if (strioctl(p->fd, SBIOCGFLAGS, sizeof(flag), (char *)&flag) < 0) { 510 snprintf(ebuf, PCAP_ERRBUF_SIZE, "SBIOCGFLAGS: %s", 511 pcap_strerror(errno)); 512 goto bad; 513 } 514 flag |= SB_NO_DROPS; 515 if (strioctl(p->fd, SBIOCSFLAGS, sizeof(flag), (char *)&flag) != 0) { 516 snprintf(ebuf, PCAP_ERRBUF_SIZE, "SBIOCSFLAGS: %s", 517 pcap_strerror(errno)); 518 goto bad; 519 } 520 /* 521 ** Set up the bufmod timeout 522 */ 523 if (to_ms != 0) { 524 struct timeval to; 525 526 to.tv_sec = to_ms / 1000; 527 to.tv_usec = (to_ms * 1000) % 1000000; 528 if (strioctl(p->fd, SBIOCSTIME, sizeof(to), (char *)&to) != 0) { 529 snprintf(ebuf, PCAP_ERRBUF_SIZE, "SBIOCSTIME: %s", 530 pcap_strerror(errno)); 531 goto bad; 532 } 533 } 534 #endif 535 536 /* 537 ** As the last operation flush the read side. 538 */ 539 if (ioctl(p->fd, I_FLUSH, FLUSHR) != 0) { 540 snprintf(ebuf, PCAP_ERRBUF_SIZE, "FLUSHR: %s", 541 pcap_strerror(errno)); 542 goto bad; 543 } 544 /* Allocate data buffer */ 545 p->bufsize = MAXDLBUF * sizeof(bpf_u_int32); 546 p->buffer = (u_char *)malloc(p->bufsize + p->offset); 547 548 return (p); 549 bad: 550 free(p); 551 return (NULL); 552 } 553 554 int 555 pcap_setfilter(pcap_t *p, struct bpf_program *fp) 556 { 557 558 if (install_bpf_program(p, fp) < 0) 559 return (-1); 560 return (0); 561 } 562 563 static int 564 send_request(int fd, char *ptr, int len, char *what, char *ebuf) 565 { 566 struct strbuf ctl; 567 int flags; 568 569 ctl.maxlen = 0; 570 ctl.len = len; 571 ctl.buf = ptr; 572 573 flags = 0; 574 if (putmsg(fd, &ctl, (struct strbuf *) NULL, flags) < 0) { 575 snprintf(ebuf, PCAP_ERRBUF_SIZE, 576 "send_request: putmsg \"%s\": %s", 577 what, pcap_strerror(errno)); 578 return (-1); 579 } 580 return (0); 581 } 582 583 static int 584 recv_ack(int fd, int size, const char *what, char *bufp, char *ebuf) 585 { 586 union DL_primitives *dlp; 587 struct strbuf ctl; 588 int flags; 589 590 ctl.maxlen = MAXDLBUF; 591 ctl.len = 0; 592 ctl.buf = bufp; 593 594 flags = 0; 595 if (getmsg(fd, &ctl, (struct strbuf*)NULL, &flags) < 0) { 596 snprintf(ebuf, PCAP_ERRBUF_SIZE, "recv_ack: %s getmsg: %s", 597 what, pcap_strerror(errno)); 598 return (-1); 599 } 600 601 dlp = (union DL_primitives *) ctl.buf; 602 switch (dlp->dl_primitive) { 603 604 case DL_INFO_ACK: 605 case DL_BIND_ACK: 606 case DL_OK_ACK: 607 #ifdef DL_HP_PPA_ACK 608 case DL_HP_PPA_ACK: 609 #endif 610 611 /* These are OK */ 612 break; 613 614 case DL_ERROR_ACK: 615 switch (dlp->error_ack.dl_errno) { 616 617 case DL_BADPPA: 618 snprintf(ebuf, PCAP_ERRBUF_SIZE, 619 "recv_ack: %s bad ppa (device unit)", what); 620 break; 621 622 623 case DL_SYSERR: 624 snprintf(ebuf, PCAP_ERRBUF_SIZE, "recv_ack: %s: %s", 625 what, pcap_strerror(dlp->error_ack.dl_unix_errno)); 626 break; 627 628 case DL_UNSUPPORTED: 629 snprintf(ebuf, PCAP_ERRBUF_SIZE, 630 "recv_ack: %s: Service not supplied by provider", 631 what); 632 break; 633 634 default: 635 snprintf(ebuf, PCAP_ERRBUF_SIZE, 636 "recv_ack: %s error 0x%x", 637 what, (bpf_u_int32)dlp->error_ack.dl_errno); 638 break; 639 } 640 return (-1); 641 642 default: 643 snprintf(ebuf, PCAP_ERRBUF_SIZE, 644 "recv_ack: %s unexpected primitive ack 0x%x ", 645 what, (bpf_u_int32)dlp->dl_primitive); 646 return (-1); 647 } 648 649 if (ctl.len < size) { 650 snprintf(ebuf, PCAP_ERRBUF_SIZE, 651 "recv_ack: %s ack too small (%d < %d)", 652 what, ctl.len, size); 653 return (-1); 654 } 655 return (ctl.len); 656 } 657 658 static int 659 dlattachreq(int fd, bpf_u_int32 ppa, char *ebuf) 660 { 661 dl_attach_req_t req; 662 663 req.dl_primitive = DL_ATTACH_REQ; 664 req.dl_ppa = ppa; 665 666 return (send_request(fd, (char *)&req, sizeof(req), "attach", ebuf)); 667 } 668 669 static int 670 dlbindreq(int fd, bpf_u_int32 sap, char *ebuf) 671 { 672 673 dl_bind_req_t req; 674 675 memset((char *)&req, 0, sizeof(req)); 676 req.dl_primitive = DL_BIND_REQ; 677 #ifdef DL_HP_RAWDLS 678 req.dl_max_conind = 1; /* XXX magic number */ 679 /* 22 is INSAP as per the HP-UX DLPI Programmer's Guide */ 680 req.dl_sap = 22; 681 req.dl_service_mode = DL_HP_RAWDLS; 682 #else 683 req.dl_sap = sap; 684 #ifdef DL_CLDLS 685 req.dl_service_mode = DL_CLDLS; 686 #endif 687 #endif 688 689 return (send_request(fd, (char *)&req, sizeof(req), "bind", ebuf)); 690 } 691 692 static int 693 dlbindack(int fd, char *bufp, char *ebuf) 694 { 695 696 return (recv_ack(fd, DL_BIND_ACK_SIZE, "bind", bufp, ebuf)); 697 } 698 699 static int 700 dlpromisconreq(int fd, bpf_u_int32 level, char *ebuf) 701 { 702 dl_promiscon_req_t req; 703 704 req.dl_primitive = DL_PROMISCON_REQ; 705 req.dl_level = level; 706 707 return (send_request(fd, (char *)&req, sizeof(req), "promiscon", ebuf)); 708 } 709 710 static int 711 dlokack(int fd, const char *what, char *bufp, char *ebuf) 712 { 713 714 return (recv_ack(fd, DL_OK_ACK_SIZE, what, bufp, ebuf)); 715 } 716 717 718 static int 719 dlinforeq(int fd, char *ebuf) 720 { 721 dl_info_req_t req; 722 723 req.dl_primitive = DL_INFO_REQ; 724 725 return (send_request(fd, (char *)&req, sizeof(req), "info", ebuf)); 726 } 727 728 static int 729 dlinfoack(int fd, char *bufp, char *ebuf) 730 { 731 732 return (recv_ack(fd, DL_INFO_ACK_SIZE, "info", bufp, ebuf)); 733 } 734 735 #ifdef HAVE_SYS_BUFMOD_H 736 static int 737 strioctl(int fd, int cmd, int len, char *dp) 738 { 739 struct strioctl str; 740 int rc; 741 742 str.ic_cmd = cmd; 743 str.ic_timout = -1; 744 str.ic_len = len; 745 str.ic_dp = dp; 746 rc = ioctl(fd, I_STR, &str); 747 748 if (rc < 0) 749 return (rc); 750 else 751 return (str.ic_len); 752 } 753 #endif 754 755 #if defined(HAVE_SOLARIS) && defined(HAVE_SYS_BUFMOD_H) 756 static char * 757 get_release(bpf_u_int32 *majorp, bpf_u_int32 *minorp, bpf_u_int32 *microp) 758 { 759 char *cp; 760 static char buf[32]; 761 762 *majorp = 0; 763 *minorp = 0; 764 *microp = 0; 765 if (sysinfo(SI_RELEASE, buf, sizeof(buf)) < 0) 766 return ("?"); 767 cp = buf; 768 if (!isdigit(*cp)) 769 return (buf); 770 *majorp = strtol(cp, &cp, 10); 771 if (*cp++ != '.') 772 return (buf); 773 *minorp = strtol(cp, &cp, 10); 774 if (*cp++ != '.') 775 return (buf); 776 *microp = strtol(cp, &cp, 10); 777 return (buf); 778 } 779 #endif 780 781 #ifdef DL_HP_PPA_ACK_OBS 782 /* 783 * Under HP-UX 10 and HP-UX 11, we can ask for the ppa 784 */ 785 786 787 /* 788 * Determine ppa number that specifies ifname. 789 * 790 * If the "dl_hp_ppa_info_t" doesn't have a "dl_module_id_1" member, 791 * the code that's used here is the old code for HP-UX 10.x. 792 * 793 * However, HP-UX 10.20, at least, appears to have such a member 794 * in its "dl_hp_ppa_info_t" structure, so the new code is used. 795 * The new code didn't work on an old 10.20 system on which Rick 796 * Jones of HP tried it, but with later patches installed, it 797 * worked - it appears that the older system had those members but 798 * didn't put anything in them, so, if the search by name fails, we 799 * do the old search. 800 * 801 * Rick suggests that making sure your system is "up on the latest 802 * lancommon/DLPI/driver patches" is probably a good idea; it'd fix 803 * that problem, as well as allowing libpcap to see packets sent 804 * from the system on which the libpcap application is being run. 805 * (On 10.20, in addition to getting the latest patches, you need 806 * to turn the kernel "lanc_outbound_promisc_flag" flag on with ADB; 807 * a posting to "comp.sys.hp.hpux" at 808 * 809 * http://www.deja.com/[ST_rn=ps]/getdoc.xp?AN=558092266 810 * 811 * says that, to see the machine's outgoing traffic, you'd need to 812 * apply the right patches to your system, and also set that variable 813 * with: 814 815 echo 'lanc_outbound_promisc_flag/W1' | /usr/bin/adb -w /stand/vmunix /dev/kmem 816 817 * which could be put in, for example, "/sbin/init.d/lan". 818 * 819 * Setting the variable is not necessary on HP-UX 11.x. 820 */ 821 static int 822 get_dlpi_ppa(register int fd, register const char *device, register int unit, 823 register char *ebuf) 824 { 825 register dl_hp_ppa_ack_t *ap; 826 register dl_hp_ppa_info_t *ipstart, *ip; 827 register int i; 828 char dname[100]; 829 register u_long majdev; 830 struct stat statbuf; 831 dl_hp_ppa_req_t req; 832 bpf_u_int32 buf[MAXDLBUF]; 833 834 memset((char *)&req, 0, sizeof(req)); 835 req.dl_primitive = DL_HP_PPA_REQ; 836 837 memset((char *)buf, 0, sizeof(buf)); 838 if (send_request(fd, (char *)&req, sizeof(req), "hpppa", ebuf) < 0 || 839 recv_ack(fd, DL_HP_PPA_ACK_SIZE, "hpppa", (char *)buf, ebuf) < 0) 840 return (-1); 841 842 ap = (dl_hp_ppa_ack_t *)buf; 843 ipstart = (dl_hp_ppa_info_t *)((u_char *)ap + ap->dl_offset); 844 ip = ipstart; 845 846 #ifdef HAVE_HP_PPA_INFO_T_DL_MODULE_ID_1 847 /* 848 * The "dl_hp_ppa_info_t" structure has a "dl_module_id_1" 849 * member that should, in theory, contain the part of the 850 * name for the device that comes before the unit number, 851 * and should also have a "dl_module_id_2" member that may 852 * contain an alternate name (e.g., I think Ethernet devices 853 * have both "lan", for "lanN", and "snap", for "snapN", with 854 * the former being for Ethernet packets and the latter being 855 * for 802.3/802.2 packets). 856 * 857 * Search for the device that has the specified name and 858 * instance number. 859 */ 860 for (i = 0; i < ap->dl_count; i++) { 861 if ((strcmp(ip->dl_module_id_1, device) == 0 || 862 strcmp(ip->dl_module_id_2, device) == 0) && 863 ip->dl_instance_num == unit) 864 break; 865 866 ip = (dl_hp_ppa_info_t *)((u_char *)ipstart + ip->dl_next_offset); 867 } 868 #else 869 /* 870 * We don't have that member, so the search is impossible; make it 871 * look as if the search failed. 872 */ 873 i = ap->dl_count; 874 #endif 875 876 if (i == ap->dl_count) { 877 /* 878 * Well, we didn't, or can't, find the device by name. 879 * 880 * HP-UX 10.20, whilst it has "dl_module_id_1" and 881 * "dl_module_id_2" fields in the "dl_hp_ppa_info_t", 882 * doesn't seem to fill them in unless the system is 883 * at a reasonably up-to-date patch level. 884 * 885 * Older HP-UX 10.x systems might not have those fields 886 * at all. 887 * 888 * Therefore, we'll search for the entry with the major 889 * device number of a device with the name "/dev/<dev><unit>", 890 * if such a device exists, as the old code did. 891 */ 892 snprintf(dname, sizeof(dname), "/dev/%s%d", device, unit); 893 if (stat(dname, &statbuf) < 0) { 894 snprintf(ebuf, PCAP_ERRBUF_SIZE, "stat: %s: %s", 895 dname, pcap_strerror(errno)); 896 return (-1); 897 } 898 majdev = major(statbuf.st_rdev); 899 900 ip = ipstart; 901 902 for (i = 0; i < ap->dl_count; i++) { 903 if (ip->dl_mjr_num == majdev && 904 ip->dl_instance_num == unit) 905 break; 906 907 ip = (dl_hp_ppa_info_t *)((u_char *)ipstart + ip->dl_next_offset); 908 } 909 } 910 if (i == ap->dl_count) { 911 snprintf(ebuf, PCAP_ERRBUF_SIZE, 912 "can't find /dev/dlpi PPA for %s%d", device, unit); 913 return (-1); 914 } 915 if (ip->dl_hdw_state == HDW_DEAD) { 916 snprintf(ebuf, PCAP_ERRBUF_SIZE, 917 "%s%d: hardware state: DOWN\n", device, unit); 918 return (-1); 919 } 920 return ((int)ip->dl_ppa); 921 } 922 #endif 923 924 #ifdef HAVE_HPUX9 925 /* 926 * Under HP-UX 9, there is no good way to determine the ppa. 927 * So punt and read it from /dev/kmem. 928 */ 929 static struct nlist nl[] = { 930 #define NL_IFNET 0 931 { "ifnet" }, 932 { "" } 933 }; 934 935 static char path_vmunix[] = "/hp-ux"; 936 937 /* Determine ppa number that specifies ifname */ 938 static int 939 get_dlpi_ppa(register int fd, register const char *ifname, register int unit, 940 register char *ebuf) 941 { 942 register const char *cp; 943 register int kd; 944 void *addr; 945 struct ifnet ifnet; 946 char if_name[sizeof(ifnet.if_name) + 1]; 947 948 cp = strrchr(ifname, '/'); 949 if (cp != NULL) 950 ifname = cp + 1; 951 if (nlist(path_vmunix, &nl) < 0) { 952 snprintf(ebuf, PCAP_ERRBUF_SIZE, "nlist %s failed", 953 path_vmunix); 954 return (-1); 955 } 956 if (nl[NL_IFNET].n_value == 0) { 957 snprintf(ebuf, PCAP_ERRBUF_SIZE, 958 "could't find %s kernel symbol", 959 nl[NL_IFNET].n_name); 960 return (-1); 961 } 962 kd = open("/dev/kmem", O_RDONLY); 963 if (kd < 0) { 964 snprintf(ebuf, PCAP_ERRBUF_SIZE, "kmem open: %s", 965 pcap_strerror(errno)); 966 return (-1); 967 } 968 if (dlpi_kread(kd, nl[NL_IFNET].n_value, 969 &addr, sizeof(addr), ebuf) < 0) { 970 close(kd); 971 return (-1); 972 } 973 for (; addr != NULL; addr = ifnet.if_next) { 974 if (dlpi_kread(kd, (off_t)addr, 975 &ifnet, sizeof(ifnet), ebuf) < 0 || 976 dlpi_kread(kd, (off_t)ifnet.if_name, 977 if_name, sizeof(ifnet.if_name), ebuf) < 0) { 978 (void)close(kd); 979 return (-1); 980 } 981 if_name[sizeof(ifnet.if_name)] = '\0'; 982 if (strcmp(if_name, ifname) == 0 && ifnet.if_unit == unit) 983 return (ifnet.if_index); 984 } 985 986 snprintf(ebuf, PCAP_ERRBUF_SIZE, "Can't find %s", ifname); 987 return (-1); 988 } 989 990 static int 991 dlpi_kread(register int fd, register off_t addr, 992 register void *buf, register u_int len, register char *ebuf) 993 { 994 register int cc; 995 996 if (lseek(fd, addr, SEEK_SET) < 0) { 997 snprintf(ebuf, PCAP_ERRBUF_SIZE, "lseek: %s", 998 pcap_strerror(errno)); 999 return (-1); 1000 } 1001 cc = read(fd, buf, len); 1002 if (cc < 0) { 1003 snprintf(ebuf, PCAP_ERRBUF_SIZE, "read: %s", 1004 pcap_strerror(errno)); 1005 return (-1); 1006 } else if (cc != len) { 1007 snprintf(ebuf, PCAP_ERRBUF_SIZE, "short read (%d != %d)", cc, 1008 len); 1009 return (-1); 1010 } 1011 return (cc); 1012 } 1013 #endif 1014