1 /* 2 * Copyright (c) 1991, 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 * PPTP support contributed by Motonori Shindo (mshindo (at) mshindo.net) 22 */ 23 24 25 #ifndef lint 26 static const char rcsid[] _U_ = 27 "@(#) $Header: /tcpdump/master/tcpdump/print-pptp.c,v 1.11.2.1 2006/06/23 02:07:27 hannes Exp $"; 28 #endif 29 30 #ifdef HAVE_CONFIG_H 31 #include "config.h" 32 #endif 33 34 #include <tcpdump-stdinc.h> 35 36 #include <stdio.h> 37 38 #include "interface.h" 39 #include "extract.h" 40 41 static char tstr[] = " [|pptp]"; 42 43 #define PPTP_MSG_TYPE_CTRL 1 /* Control Message */ 44 #define PPTP_MSG_TYPE_MGMT 2 /* Management Message (currently not used */ 45 #define PPTP_MAGIC_COOKIE 0x1a2b3c4d /* for sanity check */ 46 47 #define PPTP_CTRL_MSG_TYPE_SCCRQ 1 48 #define PPTP_CTRL_MSG_TYPE_SCCRP 2 49 #define PPTP_CTRL_MSG_TYPE_StopCCRQ 3 50 #define PPTP_CTRL_MSG_TYPE_StopCCRP 4 51 #define PPTP_CTRL_MSG_TYPE_ECHORQ 5 52 #define PPTP_CTRL_MSG_TYPE_ECHORP 6 53 #define PPTP_CTRL_MSG_TYPE_OCRQ 7 54 #define PPTP_CTRL_MSG_TYPE_OCRP 8 55 #define PPTP_CTRL_MSG_TYPE_ICRQ 9 56 #define PPTP_CTRL_MSG_TYPE_ICRP 10 57 #define PPTP_CTRL_MSG_TYPE_ICCN 11 58 #define PPTP_CTRL_MSG_TYPE_CCRQ 12 59 #define PPTP_CTRL_MSG_TYPE_CDN 13 60 #define PPTP_CTRL_MSG_TYPE_WEN 14 61 #define PPTP_CTRL_MSG_TYPE_SLI 15 62 63 #define PPTP_FRAMING_CAP_ASYNC_MASK 0x00000001 /* Aynchronous */ 64 #define PPTP_FRAMING_CAP_SYNC_MASK 0x00000002 /* Synchronous */ 65 66 #define PPTP_BEARER_CAP_ANALOG_MASK 0x00000001 /* Analog */ 67 #define PPTP_BEARER_CAP_DIGITAL_MASK 0x00000002 /* Digital */ 68 69 static const char *pptp_message_type_string[] = { 70 "NOT_DEFINED", /* 0 Not defined in the RFC2637 */ 71 "SCCRQ", /* 1 Start-Control-Connection-Request */ 72 "SCCRP", /* 2 Start-Control-Connection-Reply */ 73 "StopCCRQ", /* 3 Stop-Control-Connection-Request */ 74 "StopCCRP", /* 4 Stop-Control-Connection-Reply */ 75 "ECHORQ", /* 5 Echo Request */ 76 "ECHORP", /* 6 Echo Reply */ 77 78 "OCRQ", /* 7 Outgoing-Call-Request */ 79 "OCRP", /* 8 Outgoing-Call-Reply */ 80 "ICRQ", /* 9 Incoming-Call-Request */ 81 "ICRP", /* 10 Incoming-Call-Reply */ 82 "ICCN", /* 11 Incoming-Call-Connected */ 83 "CCRQ", /* 12 Call-Clear-Request */ 84 "CDN", /* 13 Call-Disconnect-Notify */ 85 86 "WEN", /* 14 WAN-Error-Notify */ 87 88 "SLI" /* 15 Set-Link-Info */ 89 #define PPTP_MAX_MSGTYPE_INDEX 16 90 }; 91 92 /* common for all PPTP control messages */ 93 struct pptp_hdr { 94 u_int16_t length; 95 u_int16_t msg_type; 96 u_int32_t magic_cookie; 97 u_int16_t ctrl_msg_type; 98 u_int16_t reserved0; 99 }; 100 101 struct pptp_msg_sccrq { 102 u_int16_t proto_ver; 103 u_int16_t reserved1; 104 u_int32_t framing_cap; 105 u_int32_t bearer_cap; 106 u_int16_t max_channel; 107 u_int16_t firm_rev; 108 u_char hostname[64]; 109 u_char vendor[64]; 110 }; 111 112 struct pptp_msg_sccrp { 113 u_int16_t proto_ver; 114 u_int8_t result_code; 115 u_int8_t err_code; 116 u_int32_t framing_cap; 117 u_int32_t bearer_cap; 118 u_int16_t max_channel; 119 u_int16_t firm_rev; 120 u_char hostname[64]; 121 u_char vendor[64]; 122 }; 123 124 struct pptp_msg_stopccrq { 125 u_int8_t reason; 126 u_int8_t reserved1; 127 u_int16_t reserved2; 128 }; 129 130 struct pptp_msg_stopccrp { 131 u_int8_t result_code; 132 u_int8_t err_code; 133 u_int16_t reserved1; 134 }; 135 136 struct pptp_msg_echorq { 137 u_int32_t id; 138 }; 139 140 struct pptp_msg_echorp { 141 u_int32_t id; 142 u_int8_t result_code; 143 u_int8_t err_code; 144 u_int16_t reserved1; 145 }; 146 147 struct pptp_msg_ocrq { 148 u_int16_t call_id; 149 u_int16_t call_ser; 150 u_int32_t min_bps; 151 u_int32_t max_bps; 152 u_int32_t bearer_type; 153 u_int32_t framing_type; 154 u_int16_t recv_winsiz; 155 u_int16_t pkt_proc_delay; 156 u_int16_t phone_no_len; 157 u_int16_t reserved1; 158 u_char phone_no[64]; 159 u_char subaddr[64]; 160 }; 161 162 struct pptp_msg_ocrp { 163 u_int16_t call_id; 164 u_int16_t peer_call_id; 165 u_int8_t result_code; 166 u_int8_t err_code; 167 u_int16_t cause_code; 168 u_int32_t conn_speed; 169 u_int16_t recv_winsiz; 170 u_int16_t pkt_proc_delay; 171 u_int32_t phy_chan_id; 172 }; 173 174 struct pptp_msg_icrq { 175 u_int16_t call_id; 176 u_int16_t call_ser; 177 u_int32_t bearer_type; 178 u_int32_t phy_chan_id; 179 u_int16_t dialed_no_len; 180 u_int16_t dialing_no_len; 181 u_char dialed_no[64]; /* DNIS */ 182 u_char dialing_no[64]; /* CLID */ 183 u_char subaddr[64]; 184 }; 185 186 struct pptp_msg_icrp { 187 u_int16_t call_id; 188 u_int16_t peer_call_id; 189 u_int8_t result_code; 190 u_int8_t err_code; 191 u_int16_t recv_winsiz; 192 u_int16_t pkt_proc_delay; 193 u_int16_t reserved1; 194 }; 195 196 struct pptp_msg_iccn { 197 u_int16_t peer_call_id; 198 u_int16_t reserved1; 199 u_int32_t conn_speed; 200 u_int16_t recv_winsiz; 201 u_int16_t pkt_proc_delay; 202 u_int32_t framing_type; 203 }; 204 205 struct pptp_msg_ccrq { 206 u_int16_t call_id; 207 u_int16_t reserved1; 208 }; 209 210 struct pptp_msg_cdn { 211 u_int16_t call_id; 212 u_int8_t result_code; 213 u_int8_t err_code; 214 u_int16_t cause_code; 215 u_int16_t reserved1; 216 u_char call_stats[128]; 217 }; 218 219 struct pptp_msg_wen { 220 u_int16_t peer_call_id; 221 u_int16_t reserved1; 222 u_int32_t crc_err; 223 u_int32_t framing_err; 224 u_int32_t hardware_overrun; 225 u_int32_t buffer_overrun; 226 u_int32_t timeout_err; 227 u_int32_t align_err; 228 }; 229 230 struct pptp_msg_sli { 231 u_int16_t peer_call_id; 232 u_int16_t reserved1; 233 u_int32_t send_accm; 234 u_int32_t recv_accm; 235 }; 236 237 /* attributes that appear more than once in above messages: 238 239 Number of 240 occurence attributes 241 -------------------------------------- 242 2 u_int32_t bearer_cap; 243 2 u_int32_t bearer_type; 244 6 u_int16_t call_id; 245 2 u_int16_t call_ser; 246 2 u_int16_t cause_code; 247 2 u_int32_t conn_speed; 248 6 u_int8_t err_code; 249 2 u_int16_t firm_rev; 250 2 u_int32_t framing_cap; 251 2 u_int32_t framing_type; 252 2 u_char hostname[64]; 253 2 u_int32_t id; 254 2 u_int16_t max_channel; 255 5 u_int16_t peer_call_id; 256 2 u_int32_t phy_chan_id; 257 4 u_int16_t pkt_proc_delay; 258 2 u_int16_t proto_ver; 259 4 u_int16_t recv_winsiz; 260 2 u_int8_t reserved1; 261 9 u_int16_t reserved1; 262 6 u_int8_t result_code; 263 2 u_char subaddr[64]; 264 2 u_char vendor[64]; 265 266 so I will prepare print out functions for these attributes (except for 267 reserved*). 268 */ 269 270 /******************************************/ 271 /* Attribute-specific print out functions */ 272 /******************************************/ 273 274 /* In these attribute-specific print-out functions, it't not necessary 275 to do TCHECK because they are already checked in the caller of 276 these functions. */ 277 278 static void 279 pptp_bearer_cap_print(const u_int32_t *bearer_cap) 280 { 281 printf(" BEARER_CAP("); 282 if (EXTRACT_32BITS(bearer_cap) & PPTP_BEARER_CAP_DIGITAL_MASK) { 283 printf("D"); 284 } 285 if (EXTRACT_32BITS(bearer_cap) & PPTP_BEARER_CAP_ANALOG_MASK) { 286 printf("A"); 287 } 288 printf(")"); 289 } 290 291 static void 292 pptp_bearer_type_print(const u_int32_t *bearer_type) 293 { 294 printf(" BEARER_TYPE("); 295 switch (EXTRACT_32BITS(bearer_type)) { 296 case 1: 297 printf("A"); /* Analog */ 298 break; 299 case 2: 300 printf("D"); /* Digital */ 301 break; 302 case 3: 303 printf("Any"); 304 break; 305 default: 306 printf("?"); 307 break; 308 } 309 printf(")"); 310 } 311 312 static void 313 pptp_call_id_print(const u_int16_t *call_id) 314 { 315 printf(" CALL_ID(%u)", EXTRACT_16BITS(call_id)); 316 } 317 318 static void 319 pptp_call_ser_print(const u_int16_t *call_ser) 320 { 321 printf(" CALL_SER_NUM(%u)", EXTRACT_16BITS(call_ser)); 322 } 323 324 static void 325 pptp_cause_code_print(const u_int16_t *cause_code) 326 { 327 printf(" CAUSE_CODE(%u)", EXTRACT_16BITS(cause_code)); 328 } 329 330 static void 331 pptp_conn_speed_print(const u_int32_t *conn_speed) 332 { 333 printf(" CONN_SPEED(%u)", EXTRACT_32BITS(conn_speed)); 334 } 335 336 static void 337 pptp_err_code_print(const u_int8_t *err_code) 338 { 339 printf(" ERR_CODE(%u", *err_code); 340 if (vflag) { 341 switch (*err_code) { 342 case 0: 343 printf(":None"); 344 break; 345 case 1: 346 printf(":Not-Connected"); 347 break; 348 case 2: 349 printf(":Bad-Format"); 350 break; 351 case 3: 352 printf(":Bad-Valude"); 353 break; 354 case 4: 355 printf(":No-Resource"); 356 break; 357 case 5: 358 printf(":Bad-Call-ID"); 359 break; 360 case 6: 361 printf(":PAC-Error"); 362 break; 363 default: 364 printf(":?"); 365 break; 366 } 367 } 368 printf(")"); 369 } 370 371 static void 372 pptp_firm_rev_print(const u_int16_t *firm_rev) 373 { 374 printf(" FIRM_REV(%u)", EXTRACT_16BITS(firm_rev)); 375 } 376 377 static void 378 pptp_framing_cap_print(const u_int32_t *framing_cap) 379 { 380 printf(" FRAME_CAP("); 381 if (EXTRACT_32BITS(framing_cap) & PPTP_FRAMING_CAP_ASYNC_MASK) { 382 printf("A"); /* Async */ 383 } 384 if (EXTRACT_32BITS(framing_cap) & PPTP_FRAMING_CAP_SYNC_MASK) { 385 printf("S"); /* Sync */ 386 } 387 printf(")"); 388 } 389 390 static void 391 pptp_framing_type_print(const u_int32_t *framing_type) 392 { 393 printf(" FRAME_TYPE("); 394 switch (EXTRACT_32BITS(framing_type)) { 395 case 1: 396 printf("A"); /* Async */ 397 break; 398 case 2: 399 printf("S"); /* Sync */ 400 break; 401 case 3: 402 printf("E"); /* Either */ 403 break; 404 default: 405 printf("?"); 406 break; 407 } 408 printf(")"); 409 } 410 411 static void 412 pptp_hostname_print(const u_char *hostname) 413 { 414 printf(" HOSTNAME(%.64s)", hostname); 415 } 416 417 static void 418 pptp_id_print(const u_int32_t *id) 419 { 420 printf(" ID(%u)", EXTRACT_32BITS(id)); 421 } 422 423 static void 424 pptp_max_channel_print(const u_int16_t *max_channel) 425 { 426 printf(" MAX_CHAN(%u)", EXTRACT_16BITS(max_channel)); 427 } 428 429 static void 430 pptp_peer_call_id_print(const u_int16_t *peer_call_id) 431 { 432 printf(" PEER_CALL_ID(%u)", EXTRACT_16BITS(peer_call_id)); 433 } 434 435 static void 436 pptp_phy_chan_id_print(const u_int32_t *phy_chan_id) 437 { 438 printf(" PHY_CHAN_ID(%u)", EXTRACT_32BITS(phy_chan_id)); 439 } 440 441 static void 442 pptp_pkt_proc_delay_print(const u_int16_t *pkt_proc_delay) 443 { 444 printf(" PROC_DELAY(%u)", EXTRACT_16BITS(pkt_proc_delay)); 445 } 446 447 static void 448 pptp_proto_ver_print(const u_int16_t *proto_ver) 449 { 450 printf(" PROTO_VER(%u.%u)", /* Version.Revision */ 451 EXTRACT_16BITS(proto_ver) >> 8, 452 EXTRACT_16BITS(proto_ver) & 0xff); 453 } 454 455 static void 456 pptp_recv_winsiz_print(const u_int16_t *recv_winsiz) 457 { 458 printf(" RECV_WIN(%u)", EXTRACT_16BITS(recv_winsiz)); 459 } 460 461 static void 462 pptp_result_code_print(const u_int8_t *result_code, int ctrl_msg_type) 463 { 464 printf(" RESULT_CODE(%u", *result_code); 465 if (vflag) { 466 switch (ctrl_msg_type) { 467 case PPTP_CTRL_MSG_TYPE_SCCRP: 468 switch (*result_code) { 469 case 1: 470 printf(":Successful channel establishment"); 471 break; 472 case 2: 473 printf(":General error"); 474 break; 475 case 3: 476 printf(":Command channel already exists"); 477 break; 478 case 4: 479 printf(":Requester is not authorized to establish a command channel"); 480 break; 481 case 5: 482 printf(":The protocol version of the requester is not supported"); 483 break; 484 default: 485 printf(":?"); 486 break; 487 } 488 break; 489 case PPTP_CTRL_MSG_TYPE_StopCCRP: 490 case PPTP_CTRL_MSG_TYPE_ECHORP: 491 switch (*result_code) { 492 case 1: 493 printf(":OK"); 494 break; 495 case 2: 496 printf(":General Error"); 497 break; 498 default: 499 printf(":?"); 500 break; 501 } 502 break; 503 case PPTP_CTRL_MSG_TYPE_OCRP: 504 switch (*result_code) { 505 case 1: 506 printf(":Connected"); 507 break; 508 case 2: 509 printf(":General Error"); 510 break; 511 case 3: 512 printf(":No Carrier"); 513 break; 514 case 4: 515 printf(":Busy"); 516 break; 517 case 5: 518 printf(":No Dial Tone"); 519 break; 520 case 6: 521 printf(":Time-out"); 522 break; 523 case 7: 524 printf(":Do Not Accept"); 525 break; 526 default: 527 printf(":?"); 528 break; 529 } 530 break; 531 case PPTP_CTRL_MSG_TYPE_ICRP: 532 switch (*result_code) { 533 case 1: 534 printf(":Connect"); 535 break; 536 case 2: 537 printf(":General Error"); 538 break; 539 case 3: 540 printf(":Do Not Accept"); 541 break; 542 default: 543 printf(":?"); 544 break; 545 } 546 break; 547 case PPTP_CTRL_MSG_TYPE_CDN: 548 switch (*result_code) { 549 case 1: 550 printf(":Lost Carrier"); 551 break; 552 case 2: 553 printf(":General Error"); 554 break; 555 case 3: 556 printf(":Admin Shutdown"); 557 break; 558 case 4: 559 printf(":Request"); 560 default: 561 printf(":?"); 562 break; 563 break; 564 } 565 default: 566 /* assertion error */ 567 break; 568 } 569 } 570 printf(")"); 571 } 572 573 static void 574 pptp_subaddr_print(const u_char *subaddr) 575 { 576 printf(" SUB_ADDR(%.64s)", subaddr); 577 } 578 579 static void 580 pptp_vendor_print(const u_char *vendor) 581 { 582 printf(" VENDOR(%.64s)", vendor); 583 } 584 585 /************************************/ 586 /* PPTP message print out functions */ 587 /************************************/ 588 static void 589 pptp_sccrq_print(const u_char *dat) 590 { 591 struct pptp_msg_sccrq *ptr = (struct pptp_msg_sccrq *)dat; 592 593 TCHECK(ptr->proto_ver); 594 pptp_proto_ver_print(&ptr->proto_ver); 595 TCHECK(ptr->reserved1); 596 TCHECK(ptr->framing_cap); 597 pptp_framing_cap_print(&ptr->framing_cap); 598 TCHECK(ptr->bearer_cap); 599 pptp_bearer_cap_print(&ptr->bearer_cap); 600 TCHECK(ptr->max_channel); 601 pptp_max_channel_print(&ptr->max_channel); 602 TCHECK(ptr->firm_rev); 603 pptp_firm_rev_print(&ptr->firm_rev); 604 TCHECK(ptr->hostname); 605 pptp_hostname_print(&ptr->hostname[0]); 606 TCHECK(ptr->vendor); 607 pptp_vendor_print(&ptr->vendor[0]); 608 609 return; 610 611 trunc: 612 printf("%s", tstr); 613 } 614 615 static void 616 pptp_sccrp_print(const u_char *dat) 617 { 618 struct pptp_msg_sccrp *ptr = (struct pptp_msg_sccrp *)dat; 619 620 TCHECK(ptr->proto_ver); 621 pptp_proto_ver_print(&ptr->proto_ver); 622 TCHECK(ptr->result_code); 623 pptp_result_code_print(&ptr->result_code, PPTP_CTRL_MSG_TYPE_SCCRP); 624 TCHECK(ptr->err_code); 625 pptp_err_code_print(&ptr->err_code); 626 TCHECK(ptr->framing_cap); 627 pptp_framing_cap_print(&ptr->framing_cap); 628 TCHECK(ptr->bearer_cap); 629 pptp_bearer_cap_print(&ptr->bearer_cap); 630 TCHECK(ptr->max_channel); 631 pptp_max_channel_print(&ptr->max_channel); 632 TCHECK(ptr->firm_rev); 633 pptp_firm_rev_print(&ptr->firm_rev); 634 TCHECK(ptr->hostname); 635 pptp_hostname_print(&ptr->hostname[0]); 636 TCHECK(ptr->vendor); 637 pptp_vendor_print(&ptr->vendor[0]); 638 639 return; 640 641 trunc: 642 printf("%s", tstr); 643 } 644 645 static void 646 pptp_stopccrq_print(const u_char *dat) 647 { 648 struct pptp_msg_stopccrq *ptr = (struct pptp_msg_stopccrq *)dat; 649 650 TCHECK(ptr->reason); 651 printf(" REASON(%u", ptr->reason); 652 if (vflag) { 653 switch (ptr->reason) { 654 case 1: 655 printf(":None"); 656 break; 657 case 2: 658 printf(":Stop-Protocol"); 659 break; 660 case 3: 661 printf(":Stop-Local-Shutdown"); 662 break; 663 default: 664 printf(":?"); 665 break; 666 } 667 } 668 printf(")"); 669 TCHECK(ptr->reserved1); 670 TCHECK(ptr->reserved2); 671 672 return; 673 674 trunc: 675 printf("%s", tstr); 676 } 677 678 static void 679 pptp_stopccrp_print(const u_char *dat) 680 { 681 struct pptp_msg_stopccrp *ptr = (struct pptp_msg_stopccrp *)dat; 682 683 TCHECK(ptr->result_code); 684 pptp_result_code_print(&ptr->result_code, PPTP_CTRL_MSG_TYPE_StopCCRP); 685 TCHECK(ptr->err_code); 686 pptp_err_code_print(&ptr->err_code); 687 TCHECK(ptr->reserved1); 688 689 return; 690 691 trunc: 692 printf("%s", tstr); 693 } 694 695 static void 696 pptp_echorq_print(const u_char *dat) 697 { 698 struct pptp_msg_echorq *ptr = (struct pptp_msg_echorq *)dat; 699 700 TCHECK(ptr->id); 701 pptp_id_print(&ptr->id); 702 703 return; 704 705 trunc: 706 printf("%s", tstr); 707 } 708 709 static void 710 pptp_echorp_print(const u_char *dat) 711 { 712 struct pptp_msg_echorp *ptr = (struct pptp_msg_echorp *)dat; 713 714 TCHECK(ptr->id); 715 pptp_id_print(&ptr->id); 716 TCHECK(ptr->result_code); 717 pptp_result_code_print(&ptr->result_code, PPTP_CTRL_MSG_TYPE_ECHORP); 718 TCHECK(ptr->err_code); 719 pptp_err_code_print(&ptr->err_code); 720 TCHECK(ptr->reserved1); 721 722 return; 723 724 trunc: 725 printf("%s", tstr); 726 } 727 728 static void 729 pptp_ocrq_print(const u_char *dat) 730 { 731 struct pptp_msg_ocrq *ptr = (struct pptp_msg_ocrq *)dat; 732 733 TCHECK(ptr->call_id); 734 pptp_call_id_print(&ptr->call_id); 735 TCHECK(ptr->call_ser); 736 pptp_call_ser_print(&ptr->call_ser); 737 TCHECK(ptr->min_bps); 738 printf(" MIN_BPS(%u)", EXTRACT_32BITS(&ptr->min_bps)); 739 TCHECK(ptr->max_bps); 740 printf(" MAX_BPS(%u)", EXTRACT_32BITS(&ptr->max_bps)); 741 TCHECK(ptr->bearer_type); 742 pptp_bearer_type_print(&ptr->bearer_type); 743 TCHECK(ptr->framing_type); 744 pptp_framing_type_print(&ptr->framing_type); 745 TCHECK(ptr->recv_winsiz); 746 pptp_recv_winsiz_print(&ptr->recv_winsiz); 747 TCHECK(ptr->pkt_proc_delay); 748 pptp_pkt_proc_delay_print(&ptr->pkt_proc_delay); 749 TCHECK(ptr->phone_no_len); 750 printf(" PHONE_NO_LEN(%u)", EXTRACT_16BITS(&ptr->phone_no_len)); 751 TCHECK(ptr->reserved1); 752 TCHECK(ptr->phone_no); 753 printf(" PHONE_NO(%.64s)", ptr->phone_no); 754 TCHECK(ptr->subaddr); 755 pptp_subaddr_print(&ptr->subaddr[0]); 756 757 return; 758 759 trunc: 760 printf("%s", tstr); 761 } 762 763 static void 764 pptp_ocrp_print(const u_char *dat) 765 { 766 struct pptp_msg_ocrp *ptr = (struct pptp_msg_ocrp *)dat; 767 768 TCHECK(ptr->call_id); 769 pptp_call_id_print(&ptr->call_id); 770 TCHECK(ptr->peer_call_id); 771 pptp_peer_call_id_print(&ptr->peer_call_id); 772 TCHECK(ptr->result_code); 773 pptp_result_code_print(&ptr->result_code, PPTP_CTRL_MSG_TYPE_OCRP); 774 TCHECK(ptr->err_code); 775 pptp_err_code_print(&ptr->err_code); 776 TCHECK(ptr->cause_code); 777 pptp_cause_code_print(&ptr->cause_code); 778 TCHECK(ptr->conn_speed); 779 pptp_conn_speed_print(&ptr->conn_speed); 780 TCHECK(ptr->recv_winsiz); 781 pptp_recv_winsiz_print(&ptr->recv_winsiz); 782 TCHECK(ptr->pkt_proc_delay); 783 pptp_pkt_proc_delay_print(&ptr->pkt_proc_delay); 784 TCHECK(ptr->phy_chan_id); 785 pptp_phy_chan_id_print(&ptr->phy_chan_id); 786 787 return; 788 789 trunc: 790 printf("%s", tstr); 791 } 792 793 static void 794 pptp_icrq_print(const u_char *dat) 795 { 796 struct pptp_msg_icrq *ptr = (struct pptp_msg_icrq *)dat; 797 798 TCHECK(ptr->call_id); 799 pptp_call_id_print(&ptr->call_id); 800 TCHECK(ptr->call_ser); 801 pptp_call_ser_print(&ptr->call_ser); 802 TCHECK(ptr->bearer_type); 803 pptp_bearer_type_print(&ptr->bearer_type); 804 TCHECK(ptr->phy_chan_id); 805 pptp_phy_chan_id_print(&ptr->phy_chan_id); 806 TCHECK(ptr->dialed_no_len); 807 printf(" DIALED_NO_LEN(%u)", EXTRACT_16BITS(&ptr->dialed_no_len)); 808 TCHECK(ptr->dialing_no_len); 809 printf(" DIALING_NO_LEN(%u)", EXTRACT_16BITS(&ptr->dialing_no_len)); 810 TCHECK(ptr->dialed_no); 811 printf(" DIALED_NO(%.64s)", ptr->dialed_no); 812 TCHECK(ptr->dialing_no); 813 printf(" DIALING_NO(%.64s)", ptr->dialing_no); 814 TCHECK(ptr->subaddr); 815 pptp_subaddr_print(&ptr->subaddr[0]); 816 817 return; 818 819 trunc: 820 printf("%s", tstr); 821 } 822 823 static void 824 pptp_icrp_print(const u_char *dat) 825 { 826 struct pptp_msg_icrp *ptr = (struct pptp_msg_icrp *)dat; 827 828 TCHECK(ptr->call_id); 829 pptp_call_id_print(&ptr->call_id); 830 TCHECK(ptr->peer_call_id); 831 pptp_peer_call_id_print(&ptr->peer_call_id); 832 TCHECK(ptr->result_code); 833 pptp_result_code_print(&ptr->result_code, PPTP_CTRL_MSG_TYPE_ICRP); 834 TCHECK(ptr->err_code); 835 pptp_err_code_print(&ptr->err_code); 836 TCHECK(ptr->recv_winsiz); 837 pptp_recv_winsiz_print(&ptr->recv_winsiz); 838 TCHECK(ptr->pkt_proc_delay); 839 pptp_pkt_proc_delay_print(&ptr->pkt_proc_delay); 840 TCHECK(ptr->reserved1); 841 842 return; 843 844 trunc: 845 printf("%s", tstr); 846 } 847 848 static void 849 pptp_iccn_print(const u_char *dat) 850 { 851 struct pptp_msg_iccn *ptr = (struct pptp_msg_iccn *)dat; 852 853 TCHECK(ptr->peer_call_id); 854 pptp_peer_call_id_print(&ptr->peer_call_id); 855 TCHECK(ptr->reserved1); 856 TCHECK(ptr->conn_speed); 857 pptp_conn_speed_print(&ptr->conn_speed); 858 TCHECK(ptr->recv_winsiz); 859 pptp_recv_winsiz_print(&ptr->recv_winsiz); 860 TCHECK(ptr->pkt_proc_delay); 861 pptp_pkt_proc_delay_print(&ptr->pkt_proc_delay); 862 TCHECK(ptr->framing_type); 863 pptp_framing_type_print(&ptr->framing_type); 864 865 return; 866 867 trunc: 868 printf("%s", tstr); 869 } 870 871 static void 872 pptp_ccrq_print(const u_char *dat) 873 { 874 struct pptp_msg_ccrq *ptr = (struct pptp_msg_ccrq *)dat; 875 876 TCHECK(ptr->call_id); 877 pptp_call_id_print(&ptr->call_id); 878 TCHECK(ptr->reserved1); 879 880 return; 881 882 trunc: 883 printf("%s", tstr); 884 } 885 886 static void 887 pptp_cdn_print(const u_char *dat) 888 { 889 struct pptp_msg_cdn *ptr = (struct pptp_msg_cdn *)dat; 890 891 TCHECK(ptr->call_id); 892 pptp_call_id_print(&ptr->call_id); 893 TCHECK(ptr->result_code); 894 pptp_result_code_print(&ptr->result_code, PPTP_CTRL_MSG_TYPE_CDN); 895 TCHECK(ptr->err_code); 896 pptp_err_code_print(&ptr->err_code); 897 TCHECK(ptr->cause_code); 898 pptp_cause_code_print(&ptr->cause_code); 899 TCHECK(ptr->reserved1); 900 TCHECK(ptr->call_stats); 901 printf(" CALL_STATS(%.128s)", ptr->call_stats); 902 903 return; 904 905 trunc: 906 printf("%s", tstr); 907 } 908 909 static void 910 pptp_wen_print(const u_char *dat) 911 { 912 struct pptp_msg_wen *ptr = (struct pptp_msg_wen *)dat; 913 914 TCHECK(ptr->peer_call_id); 915 pptp_peer_call_id_print(&ptr->peer_call_id); 916 TCHECK(ptr->reserved1); 917 TCHECK(ptr->crc_err); 918 printf(" CRC_ERR(%u)", EXTRACT_32BITS(&ptr->crc_err)); 919 TCHECK(ptr->framing_err); 920 printf(" FRAMING_ERR(%u)", EXTRACT_32BITS(&ptr->framing_err)); 921 TCHECK(ptr->hardware_overrun); 922 printf(" HARDWARE_OVERRUN(%u)", EXTRACT_32BITS(&ptr->hardware_overrun)); 923 TCHECK(ptr->buffer_overrun); 924 printf(" BUFFER_OVERRUN(%u)", EXTRACT_32BITS(&ptr->buffer_overrun)); 925 TCHECK(ptr->timeout_err); 926 printf(" TIMEOUT_ERR(%u)", EXTRACT_32BITS(&ptr->timeout_err)); 927 TCHECK(ptr->align_err); 928 printf(" ALIGN_ERR(%u)", EXTRACT_32BITS(&ptr->align_err)); 929 930 return; 931 932 trunc: 933 printf("%s", tstr); 934 } 935 936 static void 937 pptp_sli_print(const u_char *dat) 938 { 939 struct pptp_msg_sli *ptr = (struct pptp_msg_sli *)dat; 940 941 TCHECK(ptr->peer_call_id); 942 pptp_peer_call_id_print(&ptr->peer_call_id); 943 TCHECK(ptr->reserved1); 944 TCHECK(ptr->send_accm); 945 printf(" SEND_ACCM(0x%08x)", EXTRACT_32BITS(&ptr->send_accm)); 946 TCHECK(ptr->recv_accm); 947 printf(" RECV_ACCM(0x%08x)", EXTRACT_32BITS(&ptr->recv_accm)); 948 949 return; 950 951 trunc: 952 printf("%s", tstr); 953 } 954 955 void 956 pptp_print(const u_char *dat) 957 { 958 const struct pptp_hdr *hdr; 959 u_int32_t mc; 960 u_int16_t ctrl_msg_type; 961 962 printf(": pptp"); 963 964 hdr = (struct pptp_hdr *)dat; 965 966 TCHECK(hdr->length); 967 if (vflag) { 968 printf(" Length=%u", EXTRACT_16BITS(&hdr->length)); 969 } 970 TCHECK(hdr->msg_type); 971 if (vflag) { 972 switch(EXTRACT_16BITS(&hdr->msg_type)) { 973 case PPTP_MSG_TYPE_CTRL: 974 printf(" CTRL-MSG"); 975 break; 976 case PPTP_MSG_TYPE_MGMT: 977 printf(" MGMT-MSG"); 978 break; 979 default: 980 printf(" UNKNOWN-MSG-TYPE"); 981 break; 982 } 983 } 984 985 TCHECK(hdr->magic_cookie); 986 mc = EXTRACT_32BITS(&hdr->magic_cookie); 987 if (mc != PPTP_MAGIC_COOKIE) { 988 printf(" UNEXPECTED Magic-Cookie!!(%08x)", mc); 989 } 990 if (vflag || mc != PPTP_MAGIC_COOKIE) { 991 printf(" Magic-Cookie=%08x", mc); 992 } 993 TCHECK(hdr->ctrl_msg_type); 994 ctrl_msg_type = EXTRACT_16BITS(&hdr->ctrl_msg_type); 995 if (ctrl_msg_type < PPTP_MAX_MSGTYPE_INDEX) { 996 printf(" CTRL_MSGTYPE=%s", 997 pptp_message_type_string[ctrl_msg_type]); 998 } else { 999 printf(" UNKNOWN_CTRL_MSGTYPE(%u)", ctrl_msg_type); 1000 } 1001 TCHECK(hdr->reserved0); 1002 1003 dat += 12; 1004 1005 switch(ctrl_msg_type) { 1006 case PPTP_CTRL_MSG_TYPE_SCCRQ: 1007 pptp_sccrq_print(dat); 1008 break; 1009 case PPTP_CTRL_MSG_TYPE_SCCRP: 1010 pptp_sccrp_print(dat); 1011 break; 1012 case PPTP_CTRL_MSG_TYPE_StopCCRQ: 1013 pptp_stopccrq_print(dat); 1014 break; 1015 case PPTP_CTRL_MSG_TYPE_StopCCRP: 1016 pptp_stopccrp_print(dat); 1017 break; 1018 case PPTP_CTRL_MSG_TYPE_ECHORQ: 1019 pptp_echorq_print(dat); 1020 break; 1021 case PPTP_CTRL_MSG_TYPE_ECHORP: 1022 pptp_echorp_print(dat); 1023 break; 1024 case PPTP_CTRL_MSG_TYPE_OCRQ: 1025 pptp_ocrq_print(dat); 1026 break; 1027 case PPTP_CTRL_MSG_TYPE_OCRP: 1028 pptp_ocrp_print(dat); 1029 break; 1030 case PPTP_CTRL_MSG_TYPE_ICRQ: 1031 pptp_icrq_print(dat); 1032 break; 1033 case PPTP_CTRL_MSG_TYPE_ICRP: 1034 pptp_icrp_print(dat); 1035 break; 1036 case PPTP_CTRL_MSG_TYPE_ICCN: 1037 pptp_iccn_print(dat); 1038 break; 1039 case PPTP_CTRL_MSG_TYPE_CCRQ: 1040 pptp_ccrq_print(dat); 1041 break; 1042 case PPTP_CTRL_MSG_TYPE_CDN: 1043 pptp_cdn_print(dat); 1044 break; 1045 case PPTP_CTRL_MSG_TYPE_WEN: 1046 pptp_wen_print(dat); 1047 break; 1048 case PPTP_CTRL_MSG_TYPE_SLI: 1049 pptp_sli_print(dat); 1050 break; 1051 default: 1052 /* do nothing */ 1053 break; 1054 } 1055 1056 return; 1057 1058 trunc: 1059 printf("%s", tstr); 1060 } 1061
