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@mshindo.net) 22 */ 23 24 25 #ifndef lint 26 static const char rcsid[] = 27 "@(#) $Header: /tcpdump/master/tcpdump/print-pptp.c,v 1.3 2001/10/31 08:54:31 guy Exp $"; 28 #endif 29 30 #ifdef HAVE_CONFIG_H 31 #include "config.h" 32 #endif 33 34 #include <stdio.h> 35 #include <sys/types.h> 36 #include <sys/param.h> 37 #include <netinet/in.h> 38 #include <arpa/inet.h> 39 40 #include "interface.h" 41 42 static char tstr[] = " [|pptp]"; 43 44 #ifndef TRUE 45 #define TRUE 1 46 #endif 47 48 #ifndef FALSE 49 #define FALSE 0 50 #endif 51 52 #define PPTP_MSG_TYPE_CTRL 1 /* Control Message */ 53 #define PPTP_MSG_TYPE_MGMT 2 /* Management Message (currently not used */ 54 #define PPTP_MAGIC_COOKIE 0x1a2b3c4d /* for sanity check */ 55 56 #define PPTP_CTRL_MSG_TYPE_SCCRQ 1 57 #define PPTP_CTRL_MSG_TYPE_SCCRP 2 58 #define PPTP_CTRL_MSG_TYPE_StopCCRQ 3 59 #define PPTP_CTRL_MSG_TYPE_StopCCRP 4 60 #define PPTP_CTRL_MSG_TYPE_ECHORQ 5 61 #define PPTP_CTRL_MSG_TYPE_ECHORP 6 62 #define PPTP_CTRL_MSG_TYPE_OCRQ 7 63 #define PPTP_CTRL_MSG_TYPE_OCRP 8 64 #define PPTP_CTRL_MSG_TYPE_ICRQ 9 65 #define PPTP_CTRL_MSG_TYPE_ICRP 10 66 #define PPTP_CTRL_MSG_TYPE_ICCN 11 67 #define PPTP_CTRL_MSG_TYPE_CCRQ 12 68 #define PPTP_CTRL_MSG_TYPE_CDN 13 69 #define PPTP_CTRL_MSG_TYPE_WEN 14 70 #define PPTP_CTRL_MSG_TYPE_SLI 15 71 72 #define PPTP_FRAMING_CAP_ASYNC_MASK 0x00000001 /* Aynchronous */ 73 #define PPTP_FRAMING_CAP_SYNC_MASK 0x00000002 /* Synchronous */ 74 75 #define PPTP_BEARER_CAP_ANALOG_MASK 0x00000001 /* Analog */ 76 #define PPTP_BEARER_CAP_DIGITAL_MASK 0x00000002 /* Digital */ 77 78 static char *pptp_message_type_string[] = { 79 "NOT_DEFINED", /* 0 Not defined in the RFC2637 */ 80 "SCCRQ", /* 1 Start-Control-Connection-Request */ 81 "SCCRP", /* 2 Start-Control-Connection-Reply */ 82 "StopCCRQ", /* 3 Stop-Control-Connection-Request */ 83 "StopCCRP", /* 4 Stop-Control-Connection-Reply */ 84 "ECHORQ", /* 5 Echo Request */ 85 "ECHORP", /* 6 Echo Reply */ 86 87 "OCRQ", /* 7 Outgoing-Call-Request */ 88 "OCRP", /* 8 Outgoing-Call-Reply */ 89 "ICRQ", /* 9 Incoming-Call-Request */ 90 "ICRP", /* 10 Incoming-Call-Reply */ 91 "ICCN", /* 11 Incoming-Call-Connected */ 92 "CCRQ", /* 12 Call-Clear-Request */ 93 "CDN", /* 13 Call-Disconnect-Notify */ 94 95 "WEN", /* 14 WAN-Error-Notify */ 96 97 "SLI" /* 15 Set-Link-Info */ 98 #define PPTP_MAX_MSGTYPE_INDEX 16 99 }; 100 101 /* common for all PPTP control messages */ 102 struct pptp_hdr { 103 u_int16_t length; 104 u_int16_t msg_type; 105 u_int32_t magic_cookie; 106 u_int16_t ctrl_msg_type; 107 u_int16_t reserved0; 108 }; 109 110 struct pptp_msg_sccrq { 111 u_int16_t proto_ver; 112 u_int16_t reserved1; 113 u_int32_t framing_cap; 114 u_int32_t bearer_cap; 115 u_int16_t max_channel; 116 u_int16_t firm_rev; 117 u_char hostname[64]; 118 u_char vendor[64]; 119 }; 120 121 struct pptp_msg_sccrp { 122 u_int16_t proto_ver; 123 u_int8_t result_code; 124 u_int8_t err_code; 125 u_int32_t framing_cap; 126 u_int32_t bearer_cap; 127 u_int16_t max_channel; 128 u_int16_t firm_rev; 129 u_char hostname[64]; 130 u_char vendor[64]; 131 }; 132 133 struct pptp_msg_stopccrq { 134 u_int8_t reason; 135 u_int8_t reserved1; 136 u_int16_t reserved2; 137 }; 138 139 struct pptp_msg_stopccrp { 140 u_int8_t result_code; 141 u_int8_t err_code; 142 u_int16_t reserved1; 143 }; 144 145 struct pptp_msg_echorq { 146 u_int32_t id; 147 }; 148 149 struct pptp_msg_echorp { 150 u_int32_t id; 151 u_int8_t result_code; 152 u_int8_t err_code; 153 u_int16_t reserved1; 154 }; 155 156 struct pptp_msg_ocrq { 157 u_int16_t call_id; 158 u_int16_t call_ser; 159 u_int32_t min_bps; 160 u_int32_t max_bps; 161 u_int32_t bearer_type; 162 u_int32_t framing_type; 163 u_int16_t recv_winsiz; 164 u_int16_t pkt_proc_delay; 165 u_int16_t phone_no_len; 166 u_int16_t reserved1; 167 u_char phone_no[64]; 168 u_char subaddr[64]; 169 }; 170 171 struct pptp_msg_ocrp { 172 u_int16_t call_id; 173 u_int16_t peer_call_id; 174 u_int8_t result_code; 175 u_int8_t err_code; 176 u_int16_t cause_code; 177 u_int32_t conn_speed; 178 u_int16_t recv_winsiz; 179 u_int16_t pkt_proc_delay; 180 u_int32_t phy_chan_id; 181 }; 182 183 struct pptp_msg_icrq { 184 u_int16_t call_id; 185 u_int16_t call_ser; 186 u_int32_t bearer_type; 187 u_int32_t phy_chan_id; 188 u_int16_t dialed_no_len; 189 u_int16_t dialing_no_len; 190 u_char dialed_no[64]; /* DNIS */ 191 u_char dialing_no[64]; /* CLID */ 192 u_char subaddr[64]; 193 }; 194 195 struct pptp_msg_icrp { 196 u_int16_t call_id; 197 u_int16_t peer_call_id; 198 u_int8_t result_code; 199 u_int8_t err_code; 200 u_int16_t recv_winsiz; 201 u_int16_t pkt_proc_delay; 202 u_int16_t reserved1; 203 }; 204 205 struct pptp_msg_iccn { 206 u_int16_t peer_call_id; 207 u_int16_t reserved1; 208 u_int32_t conn_speed; 209 u_int16_t recv_winsiz; 210 u_int16_t pkt_proc_delay; 211 u_int32_t framing_type; 212 }; 213 214 struct pptp_msg_ccrq { 215 u_int16_t call_id; 216 u_int16_t reserved1; 217 }; 218 219 struct pptp_msg_cdn { 220 u_int16_t call_id; 221 u_int8_t result_code; 222 u_int8_t err_code; 223 u_int16_t cause_code; 224 u_int16_t reserved1; 225 u_char call_stats[128]; 226 }; 227 228 struct pptp_msg_wen { 229 u_int16_t peer_call_id; 230 u_int16_t reserved1; 231 u_int32_t crc_err; 232 u_int32_t framing_err; 233 u_int32_t hardware_overrun; 234 u_int32_t buffer_overrun; 235 u_int32_t timeout_err; 236 u_int32_t align_err; 237 }; 238 239 struct pptp_msg_sli { 240 u_int16_t peer_call_id; 241 u_int16_t reserved1; 242 u_int32_t send_accm; 243 u_int32_t recv_accm; 244 }; 245 246 /* attributes that appear more than once in above messages: 247 248 Number of 249 occurence attributes 250 -------------------------------------- 251 2 u_int32_t bearer_cap; 252 2 u_int32_t bearer_type; 253 6 u_int16_t call_id; 254 2 u_int16_t call_ser; 255 2 u_int16_t cause_code; 256 2 u_int32_t conn_speed; 257 6 u_int8_t err_code; 258 2 u_int16_t firm_rev; 259 2 u_int32_t framing_cap; 260 2 u_int32_t framing_type; 261 2 u_char hostname[64]; 262 2 u_int32_t id; 263 2 u_int16_t max_channel; 264 5 u_int16_t peer_call_id; 265 2 u_int32_t phy_chan_id; 266 4 u_int16_t pkt_proc_delay; 267 2 u_int16_t proto_ver; 268 4 u_int16_t recv_winsiz; 269 2 u_int8_t reserved1; 270 9 u_int16_t reserved1; 271 6 u_int8_t result_code; 272 2 u_char subaddr[64]; 273 2 u_char vendor[64]; 274 275 so I will prepare print out functions for these attributes (except for 276 reserved*). 277 */ 278 279 /******************************************/ 280 /* Attribute-specific print out functions */ 281 /******************************************/ 282 283 /* In these attribute-specific print-out functions, it't not necessary 284 to do TCHECK because they are already checked in the caller of 285 these functions. */ 286 287 static void 288 pptp_bearer_cap_print(const u_int32_t *bearer_cap) 289 { 290 printf(" BEARER_CAP("); 291 if (ntohl(*bearer_cap) & PPTP_BEARER_CAP_DIGITAL_MASK) { 292 printf("D"); 293 } 294 if (ntohl(*bearer_cap) & PPTP_BEARER_CAP_ANALOG_MASK) { 295 printf("A"); 296 } 297 printf(")"); 298 } 299 300 static void 301 pptp_bearer_type_print(const u_int32_t *bearer_type) 302 { 303 printf(" BEARER_TYPE("); 304 switch (ntohl(*bearer_type)) { 305 case 1: 306 printf("A"); /* Analog */ 307 break; 308 case 2: 309 printf("D"); /* Digital */ 310 break; 311 case 3: 312 printf("Any"); 313 break; 314 default: 315 printf("?"); 316 break; 317 } 318 printf(")"); 319 } 320 321 static void 322 pptp_call_id_print(const u_int16_t *call_id) 323 { 324 printf(" CALL_ID(%u)", ntohs(*call_id)); 325 } 326 327 static void 328 pptp_call_ser_print(const u_int16_t *call_ser) 329 { 330 printf(" CALL_SER_NUM(%u)", ntohs(*call_ser)); 331 } 332 333 static void 334 pptp_cause_code_print(const u_int16_t *cause_code) 335 { 336 printf(" CAUSE_CODE(%u)", ntohs(*cause_code)); 337 } 338 339 static void 340 pptp_conn_speed_print(const u_int32_t *conn_speed) 341 { 342 printf(" CONN_SPEED(%lu)", (unsigned long)ntohl(*conn_speed)); 343 } 344 345 static void 346 pptp_err_code_print(const u_int8_t *err_code) 347 { 348 printf(" ERR_CODE(%u", *err_code); 349 if (vflag) { 350 switch (*err_code) { 351 case 0: 352 printf(":None"); 353 break; 354 case 1: 355 printf(":Not-Connected"); 356 break; 357 case 2: 358 printf(":Bad-Format"); 359 break; 360 case 3: 361 printf(":Bad-Valude"); 362 break; 363 case 4: 364 printf(":No-Resource"); 365 break; 366 case 5: 367 printf(":Bad-Call-ID"); 368 break; 369 case 6: 370 printf(":PAC-Error"); 371 break; 372 default: 373 printf(":?"); 374 break; 375 } 376 } 377 printf(")"); 378 } 379 380 static void 381 pptp_firm_rev_print(const u_int16_t *firm_rev) 382 { 383 printf(" FIRM_REV(%u)", ntohs(*firm_rev)); 384 } 385 386 static void 387 pptp_framing_cap_print(const u_int32_t *framing_cap) 388 { 389 printf(" FRAME_CAP("); 390 if (ntohl(*framing_cap) & PPTP_FRAMING_CAP_ASYNC_MASK) { 391 printf("A"); /* Async */ 392 } 393 if (ntohl(*framing_cap) & PPTP_FRAMING_CAP_SYNC_MASK) { 394 printf("S"); /* Sync */ 395 } 396 printf(")"); 397 } 398 399 static void 400 pptp_framing_type_print(const u_int32_t *framing_type) 401 { 402 printf(" FRAME_TYPE("); 403 switch (ntohl(*framing_type)) { 404 case 1: 405 printf("A"); /* Async */ 406 break; 407 case 2: 408 printf("S"); /* Sync */ 409 break; 410 case 3: 411 printf("E"); /* Either */ 412 break; 413 default: 414 printf("?"); 415 break; 416 } 417 printf(")"); 418 } 419 420 static void 421 pptp_hostname_print(const u_char *hostname) 422 { 423 printf(" HOSTNAME(%.64s)", hostname); 424 } 425 426 static void 427 pptp_id_print(const u_int32_t *id) 428 { 429 printf(" ID(%lu)", (unsigned long)ntohl(*id)); 430 } 431 432 static void 433 pptp_max_channel_print(const u_int16_t *max_channel) 434 { 435 printf(" MAX_CHAN(%u)", ntohs(*max_channel)); 436 } 437 438 static void 439 pptp_peer_call_id_print(const u_int16_t *peer_call_id) 440 { 441 printf(" PEER_CALL_ID(%u)", ntohs(*peer_call_id)); 442 } 443 444 static void 445 pptp_phy_chan_id_print(const u_int32_t *phy_chan_id) 446 { 447 printf(" PHY_CHAN_ID(%lu)", (unsigned long)ntohl(*phy_chan_id)); 448 } 449 450 static void 451 pptp_pkt_proc_delay_print(const u_int16_t *pkt_proc_delay) 452 { 453 printf(" PROC_DELAY(%u)", ntohs(*pkt_proc_delay)); 454 } 455 456 static void 457 pptp_proto_ver_print(const u_int16_t *proto_ver) 458 { 459 printf(" PROTO_VER(%u.%u)", /* Version.Revision */ 460 ntohs(*proto_ver) >> 8, ntohs(*proto_ver) & 0xff); 461 } 462 463 static void 464 pptp_recv_winsiz_print(const u_int16_t *recv_winsiz) 465 { 466 printf(" RECV_WIN(%u)", ntohs(*recv_winsiz)); 467 } 468 469 static void 470 pptp_result_code_print(const u_int8_t *result_code, int ctrl_msg_type) 471 { 472 printf(" RESULT_CODE(%u", *result_code); 473 if (vflag) { 474 switch (ctrl_msg_type) { 475 case PPTP_CTRL_MSG_TYPE_SCCRP: 476 switch (*result_code) { 477 case 1: 478 printf(":Successful channel establishment"); 479 break; 480 case 2: 481 printf(":General error"); 482 break; 483 case 3: 484 printf(":Command channel already exists"); 485 break; 486 case 4: 487 printf(":Requester is not authorized to establish a command channel"); 488 break; 489 case 5: 490 printf(":The protocol version of the requester is not supported"); 491 break; 492 default: 493 printf(":?"); 494 break; 495 } 496 break; 497 case PPTP_CTRL_MSG_TYPE_StopCCRP: 498 case PPTP_CTRL_MSG_TYPE_ECHORP: 499 switch (*result_code) { 500 case 1: 501 printf(":OK"); 502 break; 503 case 2: 504 printf(":General Error"); 505 break; 506 default: 507 printf(":?"); 508 break; 509 } 510 break; 511 case PPTP_CTRL_MSG_TYPE_OCRP: 512 switch (*result_code) { 513 case 1: 514 printf(":Connected"); 515 break; 516 case 2: 517 printf(":General Error"); 518 break; 519 case 3: 520 printf(":No Carrier"); 521 break; 522 case 4: 523 printf(":Busy"); 524 break; 525 case 5: 526 printf(":No Dial Tone"); 527 break; 528 case 6: 529 printf(":Time-out"); 530 break; 531 case 7: 532 printf(":Do Not Accept"); 533 break; 534 default: 535 printf(":?"); 536 break; 537 } 538 break; 539 case PPTP_CTRL_MSG_TYPE_ICRP: 540 switch (*result_code) { 541 case 1: 542 printf(":Connect"); 543 break; 544 case 2: 545 printf(":General Error"); 546 break; 547 case 3: 548 printf(":Do Not Accept"); 549 break; 550 default: 551 printf(":?"); 552 break; 553 } 554 break; 555 case PPTP_CTRL_MSG_TYPE_CDN: 556 switch (*result_code) { 557 case 1: 558 printf(":Lost Carrier"); 559 break; 560 case 2: 561 printf(":General Error"); 562 break; 563 case 3: 564 printf(":Admin Shutdown"); 565 break; 566 case 4: 567 printf(":Request"); 568 default: 569 printf(":?"); 570 break; 571 break; 572 } 573 default: 574 /* assertion error */ 575 break; 576 } 577 } 578 printf(")"); 579 } 580 581 static void 582 pptp_subaddr_print(const u_char *subaddr) 583 { 584 printf(" SUB_ADDR(%.64s)", subaddr); 585 } 586 587 static void 588 pptp_vendor_print(const u_char *vendor) 589 { 590 printf(" VENDOR(%.64s)", vendor); 591 } 592 593 /************************************/ 594 /* PPTP message print out functions */ 595 /************************************/ 596 static void 597 pptp_sccrq_print(const u_char *dat) 598 { 599 struct pptp_msg_sccrq *ptr = (struct pptp_msg_sccrq *)dat; 600 601 TCHECK(ptr->proto_ver); 602 pptp_proto_ver_print(&ptr->proto_ver); 603 TCHECK(ptr->reserved1); 604 TCHECK(ptr->framing_cap); 605 pptp_framing_cap_print(&ptr->framing_cap); 606 TCHECK(ptr->bearer_cap); 607 pptp_bearer_cap_print(&ptr->bearer_cap); 608 TCHECK(ptr->max_channel); 609 pptp_max_channel_print(&ptr->max_channel); 610 TCHECK(ptr->firm_rev); 611 pptp_firm_rev_print(&ptr->firm_rev); 612 TCHECK(ptr->hostname); 613 pptp_hostname_print(&ptr->hostname[0]); 614 TCHECK(ptr->vendor); 615 pptp_vendor_print(&ptr->vendor[0]); 616 617 return; 618 619 trunc: 620 printf("%s", tstr); 621 } 622 623 static void 624 pptp_sccrp_print(const u_char *dat) 625 { 626 struct pptp_msg_sccrp *ptr = (struct pptp_msg_sccrp *)dat; 627 628 TCHECK(ptr->proto_ver); 629 pptp_proto_ver_print(&ptr->proto_ver); 630 TCHECK(ptr->result_code); 631 pptp_result_code_print(&ptr->result_code, PPTP_CTRL_MSG_TYPE_SCCRP); 632 TCHECK(ptr->err_code); 633 pptp_err_code_print(&ptr->err_code); 634 TCHECK(ptr->framing_cap); 635 pptp_framing_cap_print(&ptr->framing_cap); 636 TCHECK(ptr->bearer_cap); 637 pptp_bearer_cap_print(&ptr->bearer_cap); 638 TCHECK(ptr->max_channel); 639 pptp_max_channel_print(&ptr->max_channel); 640 TCHECK(ptr->firm_rev); 641 pptp_firm_rev_print(&ptr->firm_rev); 642 TCHECK(ptr->hostname); 643 pptp_hostname_print(&ptr->hostname[0]); 644 TCHECK(ptr->vendor); 645 pptp_vendor_print(&ptr->vendor[0]); 646 647 return; 648 649 trunc: 650 printf("%s", tstr); 651 } 652 653 static void 654 pptp_stopccrq_print(const u_char *dat) 655 { 656 struct pptp_msg_stopccrq *ptr = (struct pptp_msg_stopccrq *)dat; 657 658 TCHECK(ptr->reason); 659 printf(" REASON(%u", ptr->reason); 660 if (vflag) { 661 switch (ptr->reason) { 662 case 1: 663 printf(":None"); 664 break; 665 case 2: 666 printf(":Stop-Protocol"); 667 break; 668 case 3: 669 printf(":Stop-Local-Shutdown"); 670 break; 671 default: 672 printf(":?"); 673 break; 674 } 675 } 676 printf(")"); 677 TCHECK(ptr->reserved1); 678 TCHECK(ptr->reserved2); 679 680 return; 681 682 trunc: 683 printf("%s", tstr); 684 } 685 686 static void 687 pptp_stopccrp_print(const u_char *dat) 688 { 689 struct pptp_msg_stopccrp *ptr = (struct pptp_msg_stopccrp *)dat; 690 691 TCHECK(ptr->result_code); 692 pptp_result_code_print(&ptr->result_code, PPTP_CTRL_MSG_TYPE_StopCCRP); 693 TCHECK(ptr->err_code); 694 pptp_err_code_print(&ptr->err_code); 695 TCHECK(ptr->reserved1); 696 697 return; 698 699 trunc: 700 printf("%s", tstr); 701 } 702 703 static void 704 pptp_echorq_print(const u_char *dat) 705 { 706 struct pptp_msg_echorq *ptr = (struct pptp_msg_echorq *)dat; 707 708 TCHECK(ptr->id); 709 pptp_id_print(&ptr->id); 710 711 return; 712 713 trunc: 714 printf("%s", tstr); 715 } 716 717 static void 718 pptp_echorp_print(const u_char *dat) 719 { 720 struct pptp_msg_echorp *ptr = (struct pptp_msg_echorp *)dat; 721 722 TCHECK(ptr->id); 723 pptp_id_print(&ptr->id); 724 TCHECK(ptr->result_code); 725 pptp_result_code_print(&ptr->result_code, PPTP_CTRL_MSG_TYPE_ECHORP); 726 TCHECK(ptr->err_code); 727 pptp_err_code_print(&ptr->err_code); 728 TCHECK(ptr->reserved1); 729 730 return; 731 732 trunc: 733 printf("%s", tstr); 734 } 735 736 static void 737 pptp_ocrq_print(const u_char *dat) 738 { 739 struct pptp_msg_ocrq *ptr = (struct pptp_msg_ocrq *)dat; 740 741 TCHECK(ptr->call_id); 742 pptp_call_id_print(&ptr->call_id); 743 TCHECK(ptr->call_ser); 744 pptp_call_ser_print(&ptr->call_ser); 745 TCHECK(ptr->min_bps); 746 printf(" MIN_BPS(%lu)", (unsigned long)ntohl(ptr->min_bps)); 747 TCHECK(ptr->max_bps); 748 printf(" MAX_BPS(%lu)", (unsigned long)ntohl(ptr->max_bps)); 749 TCHECK(ptr->bearer_type); 750 pptp_bearer_type_print(&ptr->bearer_type); 751 TCHECK(ptr->framing_type); 752 pptp_framing_type_print(&ptr->framing_type); 753 TCHECK(ptr->recv_winsiz); 754 pptp_recv_winsiz_print(&ptr->recv_winsiz); 755 TCHECK(ptr->pkt_proc_delay); 756 pptp_pkt_proc_delay_print(&ptr->pkt_proc_delay); 757 TCHECK(ptr->phone_no_len); 758 printf(" PHONE_NO_LEN(%u)", ntohs(ptr->phone_no_len)); 759 TCHECK(ptr->reserved1); 760 TCHECK(ptr->phone_no); 761 printf(" PHONE_NO(%.64s)", ptr->phone_no); 762 TCHECK(ptr->subaddr); 763 pptp_subaddr_print(&ptr->subaddr[0]); 764 765 return; 766 767 trunc: 768 printf("%s", tstr); 769 } 770 771 static void 772 pptp_ocrp_print(const u_char *dat) 773 { 774 struct pptp_msg_ocrp *ptr = (struct pptp_msg_ocrp *)dat; 775 776 TCHECK(ptr->call_id); 777 pptp_call_id_print(&ptr->call_id); 778 TCHECK(ptr->peer_call_id); 779 pptp_peer_call_id_print(&ptr->peer_call_id); 780 TCHECK(ptr->result_code); 781 pptp_result_code_print(&ptr->result_code, PPTP_CTRL_MSG_TYPE_OCRP); 782 TCHECK(ptr->err_code); 783 pptp_err_code_print(&ptr->err_code); 784 TCHECK(ptr->cause_code); 785 pptp_cause_code_print(&ptr->cause_code); 786 TCHECK(ptr->conn_speed); 787 pptp_conn_speed_print(&ptr->conn_speed); 788 TCHECK(ptr->recv_winsiz); 789 pptp_recv_winsiz_print(&ptr->recv_winsiz); 790 TCHECK(ptr->pkt_proc_delay); 791 pptp_pkt_proc_delay_print(&ptr->pkt_proc_delay); 792 TCHECK(ptr->phy_chan_id); 793 pptp_phy_chan_id_print(&ptr->phy_chan_id); 794 795 return; 796 797 trunc: 798 printf("%s", tstr); 799 } 800 801 static void 802 pptp_icrq_print(const u_char *dat) 803 { 804 struct pptp_msg_icrq *ptr = (struct pptp_msg_icrq *)dat; 805 806 TCHECK(ptr->call_id); 807 pptp_call_id_print(&ptr->call_id); 808 TCHECK(ptr->call_ser); 809 pptp_call_ser_print(&ptr->call_ser); 810 TCHECK(ptr->bearer_type); 811 pptp_bearer_type_print(&ptr->bearer_type); 812 TCHECK(ptr->phy_chan_id); 813 pptp_phy_chan_id_print(&ptr->phy_chan_id); 814 TCHECK(ptr->dialed_no_len); 815 printf(" DIALED_NO_LEN(%u)", ntohs(ptr->dialed_no_len)); 816 TCHECK(ptr->dialing_no_len); 817 printf(" DIALING_NO_LEN(%u)", ntohs(ptr->dialing_no_len)); 818 TCHECK(ptr->dialed_no); 819 printf(" DIALED_NO(%.64s)", ptr->dialed_no); 820 TCHECK(ptr->dialing_no); 821 printf(" DIALING_NO(%.64s)", ptr->dialing_no); 822 TCHECK(ptr->subaddr); 823 pptp_subaddr_print(&ptr->subaddr[0]); 824 825 return; 826 827 trunc: 828 printf("%s", tstr); 829 } 830 831 static void 832 pptp_icrp_print(const u_char *dat) 833 { 834 struct pptp_msg_icrp *ptr = (struct pptp_msg_icrp *)dat; 835 836 TCHECK(ptr->call_id); 837 pptp_call_id_print(&ptr->call_id); 838 TCHECK(ptr->peer_call_id); 839 pptp_peer_call_id_print(&ptr->peer_call_id); 840 TCHECK(ptr->result_code); 841 pptp_result_code_print(&ptr->result_code, PPTP_CTRL_MSG_TYPE_ICRP); 842 TCHECK(ptr->err_code); 843 pptp_err_code_print(&ptr->err_code); 844 TCHECK(ptr->recv_winsiz); 845 pptp_recv_winsiz_print(&ptr->recv_winsiz); 846 TCHECK(ptr->pkt_proc_delay); 847 pptp_pkt_proc_delay_print(&ptr->pkt_proc_delay); 848 TCHECK(ptr->reserved1); 849 850 return; 851 852 trunc: 853 printf("%s", tstr); 854 } 855 856 static void 857 pptp_iccn_print(const u_char *dat) 858 { 859 struct pptp_msg_iccn *ptr = (struct pptp_msg_iccn *)dat; 860 861 TCHECK(ptr->peer_call_id); 862 pptp_peer_call_id_print(&ptr->peer_call_id); 863 TCHECK(ptr->reserved1); 864 TCHECK(ptr->conn_speed); 865 pptp_conn_speed_print(&ptr->conn_speed); 866 TCHECK(ptr->recv_winsiz); 867 pptp_recv_winsiz_print(&ptr->recv_winsiz); 868 TCHECK(ptr->pkt_proc_delay); 869 pptp_pkt_proc_delay_print(&ptr->pkt_proc_delay); 870 TCHECK(ptr->framing_type); 871 pptp_framing_type_print(&ptr->framing_type); 872 873 return; 874 875 trunc: 876 printf("%s", tstr); 877 } 878 879 static void 880 pptp_ccrq_print(const u_char *dat) 881 { 882 struct pptp_msg_ccrq *ptr = (struct pptp_msg_ccrq *)dat; 883 884 TCHECK(ptr->call_id); 885 pptp_call_id_print(&ptr->call_id); 886 TCHECK(ptr->reserved1); 887 888 return; 889 890 trunc: 891 printf("%s", tstr); 892 } 893 894 static void 895 pptp_cdn_print(const u_char *dat) 896 { 897 struct pptp_msg_cdn *ptr = (struct pptp_msg_cdn *)dat; 898 899 TCHECK(ptr->call_id); 900 pptp_call_id_print(&ptr->call_id); 901 TCHECK(ptr->result_code); 902 pptp_result_code_print(&ptr->result_code, PPTP_CTRL_MSG_TYPE_CDN); 903 TCHECK(ptr->err_code); 904 pptp_err_code_print(&ptr->err_code); 905 TCHECK(ptr->cause_code); 906 pptp_cause_code_print(&ptr->cause_code); 907 TCHECK(ptr->reserved1); 908 TCHECK(ptr->call_stats); 909 printf(" CALL_STATS(%.128s)", ptr->call_stats); 910 911 return; 912 913 trunc: 914 printf("%s", tstr); 915 } 916 917 static void 918 pptp_wen_print(const u_char *dat) 919 { 920 struct pptp_msg_wen *ptr = (struct pptp_msg_wen *)dat; 921 922 TCHECK(ptr->peer_call_id); 923 pptp_peer_call_id_print(&ptr->peer_call_id); 924 TCHECK(ptr->reserved1); 925 TCHECK(ptr->crc_err); 926 printf(" CRC_ERR(%lu)", (unsigned long)ntohl(ptr->crc_err)); 927 TCHECK(ptr->framing_err); 928 printf(" FRAMING_ERR(%lu)", (unsigned long)ntohl(ptr->framing_err)); 929 TCHECK(ptr->hardware_overrun); 930 printf(" HARDWARE_OVERRUN(%lu)", 931 (unsigned long)ntohl(ptr->hardware_overrun)); 932 TCHECK(ptr->buffer_overrun); 933 printf(" BUFFER_OVERRUN(%lu)", 934 (unsigned long)ntohl(ptr->buffer_overrun)); 935 TCHECK(ptr->timeout_err); 936 printf(" TIMEOUT_ERR(%lu)", (unsigned long)ntohl(ptr->timeout_err)); 937 TCHECK(ptr->align_err); 938 printf(" ALIGN_ERR(%lu)", (unsigned long)ntohl(ptr->align_err)); 939 940 return; 941 942 trunc: 943 printf("%s", tstr); 944 } 945 946 static void 947 pptp_sli_print(const u_char *dat) 948 { 949 struct pptp_msg_sli *ptr = (struct pptp_msg_sli *)dat; 950 951 TCHECK(ptr->peer_call_id); 952 pptp_peer_call_id_print(&ptr->peer_call_id); 953 TCHECK(ptr->reserved1); 954 TCHECK(ptr->send_accm); 955 printf(" SEND_ACCM(0x%08lx)", (unsigned long)ntohl(ptr->send_accm)); 956 TCHECK(ptr->recv_accm); 957 printf(" RECV_ACCM(0x%08lx)", (unsigned long)ntohl(ptr->recv_accm)); 958 959 return; 960 961 trunc: 962 printf("%s", tstr); 963 } 964 965 void 966 pptp_print(const u_char *dat, u_int length) 967 { 968 const struct pptp_hdr *hdr; 969 u_int32_t mc; 970 u_int16_t ctrl_msg_type; 971 972 printf(": pptp"); 973 974 hdr = (struct pptp_hdr *)dat; 975 976 TCHECK(hdr->length); 977 if (vflag) { 978 printf(" Length=%u", ntohs(hdr->length)); 979 } 980 TCHECK(hdr->msg_type); 981 if (vflag) { 982 switch(ntohs(hdr->msg_type)) { 983 case PPTP_MSG_TYPE_CTRL: 984 printf(" CTRL-MSG"); 985 break; 986 case PPTP_MSG_TYPE_MGMT: 987 printf(" MGMT-MSG"); 988 break; 989 default: 990 printf(" UNKNOWN-MSG-TYPE"); 991 break; 992 } 993 } 994 995 TCHECK(hdr->magic_cookie); 996 mc = ntohl(hdr->magic_cookie); 997 if (mc != PPTP_MAGIC_COOKIE) { 998 printf(" UNEXPECTED Magic-Cookie!!(%08x)", mc); 999 } 1000 if (vflag || mc != PPTP_MAGIC_COOKIE) { 1001 printf(" Magic-Cookie=%08x", mc); 1002 } 1003 TCHECK(hdr->ctrl_msg_type); 1004 ctrl_msg_type = ntohs(hdr->ctrl_msg_type); 1005 if (ctrl_msg_type < PPTP_MAX_MSGTYPE_INDEX) { 1006 printf(" CTRL_MSGTYPE=%s", 1007 pptp_message_type_string[ctrl_msg_type]); 1008 } else { 1009 printf(" UNKNOWN_CTRL_MSGTYPE(%u)", ctrl_msg_type); 1010 } 1011 TCHECK(hdr->reserved0); 1012 1013 dat += 12; 1014 1015 switch(ctrl_msg_type) { 1016 case PPTP_CTRL_MSG_TYPE_SCCRQ: 1017 pptp_sccrq_print(dat); 1018 break; 1019 case PPTP_CTRL_MSG_TYPE_SCCRP: 1020 pptp_sccrp_print(dat); 1021 break; 1022 case PPTP_CTRL_MSG_TYPE_StopCCRQ: 1023 pptp_stopccrq_print(dat); 1024 break; 1025 case PPTP_CTRL_MSG_TYPE_StopCCRP: 1026 pptp_stopccrp_print(dat); 1027 break; 1028 case PPTP_CTRL_MSG_TYPE_ECHORQ: 1029 pptp_echorq_print(dat); 1030 break; 1031 case PPTP_CTRL_MSG_TYPE_ECHORP: 1032 pptp_echorp_print(dat); 1033 break; 1034 case PPTP_CTRL_MSG_TYPE_OCRQ: 1035 pptp_ocrq_print(dat); 1036 break; 1037 case PPTP_CTRL_MSG_TYPE_OCRP: 1038 pptp_ocrp_print(dat); 1039 break; 1040 case PPTP_CTRL_MSG_TYPE_ICRQ: 1041 pptp_icrq_print(dat); 1042 break; 1043 case PPTP_CTRL_MSG_TYPE_ICRP: 1044 pptp_icrp_print(dat); 1045 break; 1046 case PPTP_CTRL_MSG_TYPE_ICCN: 1047 pptp_iccn_print(dat); 1048 break; 1049 case PPTP_CTRL_MSG_TYPE_CCRQ: 1050 pptp_ccrq_print(dat); 1051 break; 1052 case PPTP_CTRL_MSG_TYPE_CDN: 1053 pptp_cdn_print(dat); 1054 break; 1055 case PPTP_CTRL_MSG_TYPE_WEN: 1056 pptp_wen_print(dat); 1057 break; 1058 case PPTP_CTRL_MSG_TYPE_SLI: 1059 pptp_sli_print(dat); 1060 break; 1061 default: 1062 /* do nothing */ 1063 break; 1064 } 1065 1066 return; 1067 1068 trunc: 1069 printf("%s", tstr); 1070 } 1071