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 #include <sys/cdefs.h> 25 #ifndef lint 26 __RCSID("$NetBSD: print-pptp.c,v 1.4 2014/11/20 03:05:03 christos Exp $"); 27 #endif 28 29 #define NETDISSECT_REWORKED 30 #ifdef HAVE_CONFIG_H 31 #include "config.h" 32 #endif 33 34 #include <tcpdump-stdinc.h> 35 36 #include "interface.h" 37 #include "extract.h" 38 39 static const char tstr[] = " [|pptp]"; 40 41 #define PPTP_MSG_TYPE_CTRL 1 /* Control Message */ 42 #define PPTP_MSG_TYPE_MGMT 2 /* Management Message (currently not used */ 43 #define PPTP_MAGIC_COOKIE 0x1a2b3c4d /* for sanity check */ 44 45 #define PPTP_CTRL_MSG_TYPE_SCCRQ 1 46 #define PPTP_CTRL_MSG_TYPE_SCCRP 2 47 #define PPTP_CTRL_MSG_TYPE_StopCCRQ 3 48 #define PPTP_CTRL_MSG_TYPE_StopCCRP 4 49 #define PPTP_CTRL_MSG_TYPE_ECHORQ 5 50 #define PPTP_CTRL_MSG_TYPE_ECHORP 6 51 #define PPTP_CTRL_MSG_TYPE_OCRQ 7 52 #define PPTP_CTRL_MSG_TYPE_OCRP 8 53 #define PPTP_CTRL_MSG_TYPE_ICRQ 9 54 #define PPTP_CTRL_MSG_TYPE_ICRP 10 55 #define PPTP_CTRL_MSG_TYPE_ICCN 11 56 #define PPTP_CTRL_MSG_TYPE_CCRQ 12 57 #define PPTP_CTRL_MSG_TYPE_CDN 13 58 #define PPTP_CTRL_MSG_TYPE_WEN 14 59 #define PPTP_CTRL_MSG_TYPE_SLI 15 60 61 #define PPTP_FRAMING_CAP_ASYNC_MASK 0x00000001 /* Aynchronous */ 62 #define PPTP_FRAMING_CAP_SYNC_MASK 0x00000002 /* Synchronous */ 63 64 #define PPTP_BEARER_CAP_ANALOG_MASK 0x00000001 /* Analog */ 65 #define PPTP_BEARER_CAP_DIGITAL_MASK 0x00000002 /* Digital */ 66 67 static const char *pptp_message_type_string[] = { 68 "NOT_DEFINED", /* 0 Not defined in the RFC2637 */ 69 "SCCRQ", /* 1 Start-Control-Connection-Request */ 70 "SCCRP", /* 2 Start-Control-Connection-Reply */ 71 "StopCCRQ", /* 3 Stop-Control-Connection-Request */ 72 "StopCCRP", /* 4 Stop-Control-Connection-Reply */ 73 "ECHORQ", /* 5 Echo Request */ 74 "ECHORP", /* 6 Echo Reply */ 75 76 "OCRQ", /* 7 Outgoing-Call-Request */ 77 "OCRP", /* 8 Outgoing-Call-Reply */ 78 "ICRQ", /* 9 Incoming-Call-Request */ 79 "ICRP", /* 10 Incoming-Call-Reply */ 80 "ICCN", /* 11 Incoming-Call-Connected */ 81 "CCRQ", /* 12 Call-Clear-Request */ 82 "CDN", /* 13 Call-Disconnect-Notify */ 83 84 "WEN", /* 14 WAN-Error-Notify */ 85 86 "SLI" /* 15 Set-Link-Info */ 87 #define PPTP_MAX_MSGTYPE_INDEX 16 88 }; 89 90 /* common for all PPTP control messages */ 91 struct pptp_hdr { 92 uint16_t length; 93 uint16_t msg_type; 94 uint32_t magic_cookie; 95 uint16_t ctrl_msg_type; 96 uint16_t reserved0; 97 }; 98 99 struct pptp_msg_sccrq { 100 uint16_t proto_ver; 101 uint16_t reserved1; 102 uint32_t framing_cap; 103 uint32_t bearer_cap; 104 uint16_t max_channel; 105 uint16_t firm_rev; 106 u_char hostname[64]; 107 u_char vendor[64]; 108 }; 109 110 struct pptp_msg_sccrp { 111 uint16_t proto_ver; 112 uint8_t result_code; 113 uint8_t err_code; 114 uint32_t framing_cap; 115 uint32_t bearer_cap; 116 uint16_t max_channel; 117 uint16_t firm_rev; 118 u_char hostname[64]; 119 u_char vendor[64]; 120 }; 121 122 struct pptp_msg_stopccrq { 123 uint8_t reason; 124 uint8_t reserved1; 125 uint16_t reserved2; 126 }; 127 128 struct pptp_msg_stopccrp { 129 uint8_t result_code; 130 uint8_t err_code; 131 uint16_t reserved1; 132 }; 133 134 struct pptp_msg_echorq { 135 uint32_t id; 136 }; 137 138 struct pptp_msg_echorp { 139 uint32_t id; 140 uint8_t result_code; 141 uint8_t err_code; 142 uint16_t reserved1; 143 }; 144 145 struct pptp_msg_ocrq { 146 uint16_t call_id; 147 uint16_t call_ser; 148 uint32_t min_bps; 149 uint32_t max_bps; 150 uint32_t bearer_type; 151 uint32_t framing_type; 152 uint16_t recv_winsiz; 153 uint16_t pkt_proc_delay; 154 uint16_t phone_no_len; 155 uint16_t reserved1; 156 u_char phone_no[64]; 157 u_char subaddr[64]; 158 }; 159 160 struct pptp_msg_ocrp { 161 uint16_t call_id; 162 uint16_t peer_call_id; 163 uint8_t result_code; 164 uint8_t err_code; 165 uint16_t cause_code; 166 uint32_t conn_speed; 167 uint16_t recv_winsiz; 168 uint16_t pkt_proc_delay; 169 uint32_t phy_chan_id; 170 }; 171 172 struct pptp_msg_icrq { 173 uint16_t call_id; 174 uint16_t call_ser; 175 uint32_t bearer_type; 176 uint32_t phy_chan_id; 177 uint16_t dialed_no_len; 178 uint16_t dialing_no_len; 179 u_char dialed_no[64]; /* DNIS */ 180 u_char dialing_no[64]; /* CLID */ 181 u_char subaddr[64]; 182 }; 183 184 struct pptp_msg_icrp { 185 uint16_t call_id; 186 uint16_t peer_call_id; 187 uint8_t result_code; 188 uint8_t err_code; 189 uint16_t recv_winsiz; 190 uint16_t pkt_proc_delay; 191 uint16_t reserved1; 192 }; 193 194 struct pptp_msg_iccn { 195 uint16_t peer_call_id; 196 uint16_t reserved1; 197 uint32_t conn_speed; 198 uint16_t recv_winsiz; 199 uint16_t pkt_proc_delay; 200 uint32_t framing_type; 201 }; 202 203 struct pptp_msg_ccrq { 204 uint16_t call_id; 205 uint16_t reserved1; 206 }; 207 208 struct pptp_msg_cdn { 209 uint16_t call_id; 210 uint8_t result_code; 211 uint8_t err_code; 212 uint16_t cause_code; 213 uint16_t reserved1; 214 u_char call_stats[128]; 215 }; 216 217 struct pptp_msg_wen { 218 uint16_t peer_call_id; 219 uint16_t reserved1; 220 uint32_t crc_err; 221 uint32_t framing_err; 222 uint32_t hardware_overrun; 223 uint32_t buffer_overrun; 224 uint32_t timeout_err; 225 uint32_t align_err; 226 }; 227 228 struct pptp_msg_sli { 229 uint16_t peer_call_id; 230 uint16_t reserved1; 231 uint32_t send_accm; 232 uint32_t recv_accm; 233 }; 234 235 /* attributes that appear more than once in above messages: 236 237 Number of 238 occurence attributes 239 -------------------------------------- 240 2 uint32_t bearer_cap; 241 2 uint32_t bearer_type; 242 6 uint16_t call_id; 243 2 uint16_t call_ser; 244 2 uint16_t cause_code; 245 2 uint32_t conn_speed; 246 6 uint8_t err_code; 247 2 uint16_t firm_rev; 248 2 uint32_t framing_cap; 249 2 uint32_t framing_type; 250 2 u_char hostname[64]; 251 2 uint32_t id; 252 2 uint16_t max_channel; 253 5 uint16_t peer_call_id; 254 2 uint32_t phy_chan_id; 255 4 uint16_t pkt_proc_delay; 256 2 uint16_t proto_ver; 257 4 uint16_t recv_winsiz; 258 2 uint8_t reserved1; 259 9 uint16_t reserved1; 260 6 uint8_t result_code; 261 2 u_char subaddr[64]; 262 2 u_char vendor[64]; 263 264 so I will prepare print out functions for these attributes (except for 265 reserved*). 266 */ 267 268 /******************************************/ 269 /* Attribute-specific print out functions */ 270 /******************************************/ 271 272 /* In these attribute-specific print-out functions, it't not necessary 273 to do ND_TCHECK because they are already checked in the caller of 274 these functions. */ 275 276 static void 277 pptp_bearer_cap_print(netdissect_options *ndo, 278 const uint32_t *bearer_cap) 279 { 280 ND_PRINT((ndo, " BEARER_CAP(%s%s)", 281 EXTRACT_32BITS(bearer_cap) & PPTP_BEARER_CAP_DIGITAL_MASK ? "D" : "", 282 EXTRACT_32BITS(bearer_cap) & PPTP_BEARER_CAP_ANALOG_MASK ? "A" : "")); 283 } 284 285 static const struct tok pptp_btype_str[] = { 286 { 1, "A" }, /* Analog */ 287 { 2, "D" }, /* Digital */ 288 { 3, "Any" }, 289 { 0, NULL } 290 }; 291 292 static void 293 pptp_bearer_type_print(netdissect_options *ndo, 294 const uint32_t *bearer_type) 295 { 296 ND_PRINT((ndo, " BEARER_TYPE(%s)", 297 tok2str(pptp_btype_str, "?", EXTRACT_32BITS(bearer_type)))); 298 } 299 300 static void 301 pptp_call_id_print(netdissect_options *ndo, 302 const uint16_t *call_id) 303 { 304 ND_PRINT((ndo, " CALL_ID(%u)", EXTRACT_16BITS(call_id))); 305 } 306 307 static void 308 pptp_call_ser_print(netdissect_options *ndo, 309 const uint16_t *call_ser) 310 { 311 ND_PRINT((ndo, " CALL_SER_NUM(%u)", EXTRACT_16BITS(call_ser))); 312 } 313 314 static void 315 pptp_cause_code_print(netdissect_options *ndo, 316 const uint16_t *cause_code) 317 { 318 ND_PRINT((ndo, " CAUSE_CODE(%u)", EXTRACT_16BITS(cause_code))); 319 } 320 321 static void 322 pptp_conn_speed_print(netdissect_options *ndo, 323 const uint32_t *conn_speed) 324 { 325 ND_PRINT((ndo, " CONN_SPEED(%u)", EXTRACT_32BITS(conn_speed))); 326 } 327 328 static const struct tok pptp_errcode_str[] = { 329 { 0, "None" }, 330 { 1, "Not-Connected" }, 331 { 2, "Bad-Format" }, 332 { 3, "Bad-Value" }, 333 { 4, "No-Resource" }, 334 { 5, "Bad-Call-ID" }, 335 { 6, "PAC-Error" }, 336 { 0, NULL } 337 }; 338 339 static void 340 pptp_err_code_print(netdissect_options *ndo, 341 const uint8_t *err_code) 342 { 343 ND_PRINT((ndo, " ERR_CODE(%u", *err_code)); 344 if (ndo->ndo_vflag) { 345 ND_PRINT((ndo, ":%s", tok2str(pptp_errcode_str, "?", *err_code))); 346 } 347 ND_PRINT((ndo, ")")); 348 } 349 350 static void 351 pptp_firm_rev_print(netdissect_options *ndo, 352 const uint16_t *firm_rev) 353 { 354 ND_PRINT((ndo, " FIRM_REV(%u)", EXTRACT_16BITS(firm_rev))); 355 } 356 357 static void 358 pptp_framing_cap_print(netdissect_options *ndo, 359 const uint32_t *framing_cap) 360 { 361 ND_PRINT((ndo, " FRAME_CAP(")); 362 if (EXTRACT_32BITS(framing_cap) & PPTP_FRAMING_CAP_ASYNC_MASK) { 363 ND_PRINT((ndo, "A")); /* Async */ 364 } 365 if (EXTRACT_32BITS(framing_cap) & PPTP_FRAMING_CAP_SYNC_MASK) { 366 ND_PRINT((ndo, "S")); /* Sync */ 367 } 368 ND_PRINT((ndo, ")")); 369 } 370 371 static const struct tok pptp_ftype_str[] = { 372 { 1, "A" }, /* Async */ 373 { 2, "S" }, /* Sync */ 374 { 3, "E" }, /* Either */ 375 { 0, NULL } 376 }; 377 378 static void 379 pptp_framing_type_print(netdissect_options *ndo, 380 const uint32_t *framing_type) 381 { 382 ND_PRINT((ndo, " FRAME_TYPE(%s)", 383 tok2str(pptp_ftype_str, "?", EXTRACT_32BITS(framing_type)))); 384 } 385 386 static void 387 pptp_hostname_print(netdissect_options *ndo, 388 const u_char *hostname) 389 { 390 ND_PRINT((ndo, " HOSTNAME(%.64s)", hostname)); 391 } 392 393 static void 394 pptp_id_print(netdissect_options *ndo, 395 const uint32_t *id) 396 { 397 ND_PRINT((ndo, " ID(%u)", EXTRACT_32BITS(id))); 398 } 399 400 static void 401 pptp_max_channel_print(netdissect_options *ndo, 402 const uint16_t *max_channel) 403 { 404 ND_PRINT((ndo, " MAX_CHAN(%u)", EXTRACT_16BITS(max_channel))); 405 } 406 407 static void 408 pptp_peer_call_id_print(netdissect_options *ndo, 409 const uint16_t *peer_call_id) 410 { 411 ND_PRINT((ndo, " PEER_CALL_ID(%u)", EXTRACT_16BITS(peer_call_id))); 412 } 413 414 static void 415 pptp_phy_chan_id_print(netdissect_options *ndo, 416 const uint32_t *phy_chan_id) 417 { 418 ND_PRINT((ndo, " PHY_CHAN_ID(%u)", EXTRACT_32BITS(phy_chan_id))); 419 } 420 421 static void 422 pptp_pkt_proc_delay_print(netdissect_options *ndo, 423 const uint16_t *pkt_proc_delay) 424 { 425 ND_PRINT((ndo, " PROC_DELAY(%u)", EXTRACT_16BITS(pkt_proc_delay))); 426 } 427 428 static void 429 pptp_proto_ver_print(netdissect_options *ndo, 430 const uint16_t *proto_ver) 431 { 432 ND_PRINT((ndo, " PROTO_VER(%u.%u)", /* Version.Revision */ 433 EXTRACT_16BITS(proto_ver) >> 8, 434 EXTRACT_16BITS(proto_ver) & 0xff)); 435 } 436 437 static void 438 pptp_recv_winsiz_print(netdissect_options *ndo, 439 const uint16_t *recv_winsiz) 440 { 441 ND_PRINT((ndo, " RECV_WIN(%u)", EXTRACT_16BITS(recv_winsiz))); 442 } 443 444 static const struct tok pptp_scrrp_str[] = { 445 { 1, "Successful channel establishment" }, 446 { 2, "General error" }, 447 { 3, "Command channel already exists" }, 448 { 4, "Requester is not authorized to establish a command channel" }, 449 { 5, "The protocol version of the requester is not supported" }, 450 { 0, NULL } 451 }; 452 453 static const struct tok pptp_echorp_str[] = { 454 { 1, "OK" }, 455 { 2, "General Error" }, 456 { 0, NULL } 457 }; 458 459 static const struct tok pptp_ocrp_str[] = { 460 { 1, "Connected" }, 461 { 2, "General Error" }, 462 { 3, "No Carrier" }, 463 { 4, "Busy" }, 464 { 5, "No Dial Tone" }, 465 { 6, "Time-out" }, 466 { 7, "Do Not Accept" }, 467 { 0, NULL } 468 }; 469 470 static const struct tok pptp_icrp_str[] = { 471 { 1, "Connect" }, 472 { 2, "General Error" }, 473 { 3, "Do Not Accept" }, 474 { 0, NULL } 475 }; 476 477 static const struct tok pptp_cdn_str[] = { 478 { 1, "Lost Carrier" }, 479 { 2, "General Error" }, 480 { 3, "Admin Shutdown" }, 481 { 4, "Request" }, 482 { 0, NULL } 483 }; 484 485 static void 486 pptp_result_code_print(netdissect_options *ndo, 487 const uint8_t *result_code, int ctrl_msg_type) 488 { 489 ND_PRINT((ndo, " RESULT_CODE(%u", *result_code)); 490 if (ndo->ndo_vflag) { 491 const struct tok *dict = 492 ctrl_msg_type == PPTP_CTRL_MSG_TYPE_SCCRP ? pptp_scrrp_str : 493 ctrl_msg_type == PPTP_CTRL_MSG_TYPE_StopCCRP ? pptp_echorp_str : 494 ctrl_msg_type == PPTP_CTRL_MSG_TYPE_ECHORP ? pptp_echorp_str : 495 ctrl_msg_type == PPTP_CTRL_MSG_TYPE_OCRP ? pptp_ocrp_str : 496 ctrl_msg_type == PPTP_CTRL_MSG_TYPE_ICRP ? pptp_icrp_str : 497 ctrl_msg_type == PPTP_CTRL_MSG_TYPE_CDN ? pptp_cdn_str : 498 NULL; /* assertion error */ 499 if (dict != NULL) 500 ND_PRINT((ndo, ":%s", tok2str(dict, "?", *result_code))); 501 } 502 ND_PRINT((ndo, ")")); 503 } 504 505 static void 506 pptp_subaddr_print(netdissect_options *ndo, 507 const u_char *subaddr) 508 { 509 ND_PRINT((ndo, " SUB_ADDR(%.64s)", subaddr)); 510 } 511 512 static void 513 pptp_vendor_print(netdissect_options *ndo, 514 const u_char *vendor) 515 { 516 ND_PRINT((ndo, " VENDOR(%.64s)", vendor)); 517 } 518 519 /************************************/ 520 /* PPTP message print out functions */ 521 /************************************/ 522 static void 523 pptp_sccrq_print(netdissect_options *ndo, 524 const u_char *dat) 525 { 526 struct pptp_msg_sccrq *ptr = (struct pptp_msg_sccrq *)dat; 527 528 ND_TCHECK(ptr->proto_ver); 529 pptp_proto_ver_print(ndo, &ptr->proto_ver); 530 ND_TCHECK(ptr->reserved1); 531 ND_TCHECK(ptr->framing_cap); 532 pptp_framing_cap_print(ndo, &ptr->framing_cap); 533 ND_TCHECK(ptr->bearer_cap); 534 pptp_bearer_cap_print(ndo, &ptr->bearer_cap); 535 ND_TCHECK(ptr->max_channel); 536 pptp_max_channel_print(ndo, &ptr->max_channel); 537 ND_TCHECK(ptr->firm_rev); 538 pptp_firm_rev_print(ndo, &ptr->firm_rev); 539 ND_TCHECK(ptr->hostname); 540 pptp_hostname_print(ndo, &ptr->hostname[0]); 541 ND_TCHECK(ptr->vendor); 542 pptp_vendor_print(ndo, &ptr->vendor[0]); 543 544 return; 545 546 trunc: 547 ND_PRINT((ndo, "%s", tstr)); 548 } 549 550 static void 551 pptp_sccrp_print(netdissect_options *ndo, 552 const u_char *dat) 553 { 554 struct pptp_msg_sccrp *ptr = (struct pptp_msg_sccrp *)dat; 555 556 ND_TCHECK(ptr->proto_ver); 557 pptp_proto_ver_print(ndo, &ptr->proto_ver); 558 ND_TCHECK(ptr->result_code); 559 pptp_result_code_print(ndo, &ptr->result_code, PPTP_CTRL_MSG_TYPE_SCCRP); 560 ND_TCHECK(ptr->err_code); 561 pptp_err_code_print(ndo, &ptr->err_code); 562 ND_TCHECK(ptr->framing_cap); 563 pptp_framing_cap_print(ndo, &ptr->framing_cap); 564 ND_TCHECK(ptr->bearer_cap); 565 pptp_bearer_cap_print(ndo, &ptr->bearer_cap); 566 ND_TCHECK(ptr->max_channel); 567 pptp_max_channel_print(ndo, &ptr->max_channel); 568 ND_TCHECK(ptr->firm_rev); 569 pptp_firm_rev_print(ndo, &ptr->firm_rev); 570 ND_TCHECK(ptr->hostname); 571 pptp_hostname_print(ndo, &ptr->hostname[0]); 572 ND_TCHECK(ptr->vendor); 573 pptp_vendor_print(ndo, &ptr->vendor[0]); 574 575 return; 576 577 trunc: 578 ND_PRINT((ndo, "%s", tstr)); 579 } 580 581 static void 582 pptp_stopccrq_print(netdissect_options *ndo, 583 const u_char *dat) 584 { 585 struct pptp_msg_stopccrq *ptr = (struct pptp_msg_stopccrq *)dat; 586 587 ND_TCHECK(ptr->reason); 588 ND_PRINT((ndo, " REASON(%u", ptr->reason)); 589 if (ndo->ndo_vflag) { 590 switch (ptr->reason) { 591 case 1: 592 ND_PRINT((ndo, ":None")); 593 break; 594 case 2: 595 ND_PRINT((ndo, ":Stop-Protocol")); 596 break; 597 case 3: 598 ND_PRINT((ndo, ":Stop-Local-Shutdown")); 599 break; 600 default: 601 ND_PRINT((ndo, ":?")); 602 break; 603 } 604 } 605 ND_PRINT((ndo, ")")); 606 ND_TCHECK(ptr->reserved1); 607 ND_TCHECK(ptr->reserved2); 608 609 return; 610 611 trunc: 612 ND_PRINT((ndo, "%s", tstr)); 613 } 614 615 static void 616 pptp_stopccrp_print(netdissect_options *ndo, 617 const u_char *dat) 618 { 619 struct pptp_msg_stopccrp *ptr = (struct pptp_msg_stopccrp *)dat; 620 621 ND_TCHECK(ptr->result_code); 622 pptp_result_code_print(ndo, &ptr->result_code, PPTP_CTRL_MSG_TYPE_StopCCRP); 623 ND_TCHECK(ptr->err_code); 624 pptp_err_code_print(ndo, &ptr->err_code); 625 ND_TCHECK(ptr->reserved1); 626 627 return; 628 629 trunc: 630 ND_PRINT((ndo, "%s", tstr)); 631 } 632 633 static void 634 pptp_echorq_print(netdissect_options *ndo, 635 const u_char *dat) 636 { 637 struct pptp_msg_echorq *ptr = (struct pptp_msg_echorq *)dat; 638 639 ND_TCHECK(ptr->id); 640 pptp_id_print(ndo, &ptr->id); 641 642 return; 643 644 trunc: 645 ND_PRINT((ndo, "%s", tstr)); 646 } 647 648 static void 649 pptp_echorp_print(netdissect_options *ndo, 650 const u_char *dat) 651 { 652 struct pptp_msg_echorp *ptr = (struct pptp_msg_echorp *)dat; 653 654 ND_TCHECK(ptr->id); 655 pptp_id_print(ndo, &ptr->id); 656 ND_TCHECK(ptr->result_code); 657 pptp_result_code_print(ndo, &ptr->result_code, PPTP_CTRL_MSG_TYPE_ECHORP); 658 ND_TCHECK(ptr->err_code); 659 pptp_err_code_print(ndo, &ptr->err_code); 660 ND_TCHECK(ptr->reserved1); 661 662 return; 663 664 trunc: 665 ND_PRINT((ndo, "%s", tstr)); 666 } 667 668 static void 669 pptp_ocrq_print(netdissect_options *ndo, 670 const u_char *dat) 671 { 672 struct pptp_msg_ocrq *ptr = (struct pptp_msg_ocrq *)dat; 673 674 ND_TCHECK(ptr->call_id); 675 pptp_call_id_print(ndo, &ptr->call_id); 676 ND_TCHECK(ptr->call_ser); 677 pptp_call_ser_print(ndo, &ptr->call_ser); 678 ND_TCHECK(ptr->min_bps); 679 ND_PRINT((ndo, " MIN_BPS(%u)", EXTRACT_32BITS(&ptr->min_bps))); 680 ND_TCHECK(ptr->max_bps); 681 ND_PRINT((ndo, " MAX_BPS(%u)", EXTRACT_32BITS(&ptr->max_bps))); 682 ND_TCHECK(ptr->bearer_type); 683 pptp_bearer_type_print(ndo, &ptr->bearer_type); 684 ND_TCHECK(ptr->framing_type); 685 pptp_framing_type_print(ndo, &ptr->framing_type); 686 ND_TCHECK(ptr->recv_winsiz); 687 pptp_recv_winsiz_print(ndo, &ptr->recv_winsiz); 688 ND_TCHECK(ptr->pkt_proc_delay); 689 pptp_pkt_proc_delay_print(ndo, &ptr->pkt_proc_delay); 690 ND_TCHECK(ptr->phone_no_len); 691 ND_PRINT((ndo, " PHONE_NO_LEN(%u)", EXTRACT_16BITS(&ptr->phone_no_len))); 692 ND_TCHECK(ptr->reserved1); 693 ND_TCHECK(ptr->phone_no); 694 ND_PRINT((ndo, " PHONE_NO(%.64s)", ptr->phone_no)); 695 ND_TCHECK(ptr->subaddr); 696 pptp_subaddr_print(ndo, &ptr->subaddr[0]); 697 698 return; 699 700 trunc: 701 ND_PRINT((ndo, "%s", tstr)); 702 } 703 704 static void 705 pptp_ocrp_print(netdissect_options *ndo, 706 const u_char *dat) 707 { 708 struct pptp_msg_ocrp *ptr = (struct pptp_msg_ocrp *)dat; 709 710 ND_TCHECK(ptr->call_id); 711 pptp_call_id_print(ndo, &ptr->call_id); 712 ND_TCHECK(ptr->peer_call_id); 713 pptp_peer_call_id_print(ndo, &ptr->peer_call_id); 714 ND_TCHECK(ptr->result_code); 715 pptp_result_code_print(ndo, &ptr->result_code, PPTP_CTRL_MSG_TYPE_OCRP); 716 ND_TCHECK(ptr->err_code); 717 pptp_err_code_print(ndo, &ptr->err_code); 718 ND_TCHECK(ptr->cause_code); 719 pptp_cause_code_print(ndo, &ptr->cause_code); 720 ND_TCHECK(ptr->conn_speed); 721 pptp_conn_speed_print(ndo, &ptr->conn_speed); 722 ND_TCHECK(ptr->recv_winsiz); 723 pptp_recv_winsiz_print(ndo, &ptr->recv_winsiz); 724 ND_TCHECK(ptr->pkt_proc_delay); 725 pptp_pkt_proc_delay_print(ndo, &ptr->pkt_proc_delay); 726 ND_TCHECK(ptr->phy_chan_id); 727 pptp_phy_chan_id_print(ndo, &ptr->phy_chan_id); 728 729 return; 730 731 trunc: 732 ND_PRINT((ndo, "%s", tstr)); 733 } 734 735 static void 736 pptp_icrq_print(netdissect_options *ndo, 737 const u_char *dat) 738 { 739 struct pptp_msg_icrq *ptr = (struct pptp_msg_icrq *)dat; 740 741 ND_TCHECK(ptr->call_id); 742 pptp_call_id_print(ndo, &ptr->call_id); 743 ND_TCHECK(ptr->call_ser); 744 pptp_call_ser_print(ndo, &ptr->call_ser); 745 ND_TCHECK(ptr->bearer_type); 746 pptp_bearer_type_print(ndo, &ptr->bearer_type); 747 ND_TCHECK(ptr->phy_chan_id); 748 pptp_phy_chan_id_print(ndo, &ptr->phy_chan_id); 749 ND_TCHECK(ptr->dialed_no_len); 750 ND_PRINT((ndo, " DIALED_NO_LEN(%u)", EXTRACT_16BITS(&ptr->dialed_no_len))); 751 ND_TCHECK(ptr->dialing_no_len); 752 ND_PRINT((ndo, " DIALING_NO_LEN(%u)", EXTRACT_16BITS(&ptr->dialing_no_len))); 753 ND_TCHECK(ptr->dialed_no); 754 ND_PRINT((ndo, " DIALED_NO(%.64s)", ptr->dialed_no)); 755 ND_TCHECK(ptr->dialing_no); 756 ND_PRINT((ndo, " DIALING_NO(%.64s)", ptr->dialing_no)); 757 ND_TCHECK(ptr->subaddr); 758 pptp_subaddr_print(ndo, &ptr->subaddr[0]); 759 760 return; 761 762 trunc: 763 ND_PRINT((ndo, "%s", tstr)); 764 } 765 766 static void 767 pptp_icrp_print(netdissect_options *ndo, 768 const u_char *dat) 769 { 770 struct pptp_msg_icrp *ptr = (struct pptp_msg_icrp *)dat; 771 772 ND_TCHECK(ptr->call_id); 773 pptp_call_id_print(ndo, &ptr->call_id); 774 ND_TCHECK(ptr->peer_call_id); 775 pptp_peer_call_id_print(ndo, &ptr->peer_call_id); 776 ND_TCHECK(ptr->result_code); 777 pptp_result_code_print(ndo, &ptr->result_code, PPTP_CTRL_MSG_TYPE_ICRP); 778 ND_TCHECK(ptr->err_code); 779 pptp_err_code_print(ndo, &ptr->err_code); 780 ND_TCHECK(ptr->recv_winsiz); 781 pptp_recv_winsiz_print(ndo, &ptr->recv_winsiz); 782 ND_TCHECK(ptr->pkt_proc_delay); 783 pptp_pkt_proc_delay_print(ndo, &ptr->pkt_proc_delay); 784 ND_TCHECK(ptr->reserved1); 785 786 return; 787 788 trunc: 789 ND_PRINT((ndo, "%s", tstr)); 790 } 791 792 static void 793 pptp_iccn_print(netdissect_options *ndo, 794 const u_char *dat) 795 { 796 struct pptp_msg_iccn *ptr = (struct pptp_msg_iccn *)dat; 797 798 ND_TCHECK(ptr->peer_call_id); 799 pptp_peer_call_id_print(ndo, &ptr->peer_call_id); 800 ND_TCHECK(ptr->reserved1); 801 ND_TCHECK(ptr->conn_speed); 802 pptp_conn_speed_print(ndo, &ptr->conn_speed); 803 ND_TCHECK(ptr->recv_winsiz); 804 pptp_recv_winsiz_print(ndo, &ptr->recv_winsiz); 805 ND_TCHECK(ptr->pkt_proc_delay); 806 pptp_pkt_proc_delay_print(ndo, &ptr->pkt_proc_delay); 807 ND_TCHECK(ptr->framing_type); 808 pptp_framing_type_print(ndo, &ptr->framing_type); 809 810 return; 811 812 trunc: 813 ND_PRINT((ndo, "%s", tstr)); 814 } 815 816 static void 817 pptp_ccrq_print(netdissect_options *ndo, 818 const u_char *dat) 819 { 820 struct pptp_msg_ccrq *ptr = (struct pptp_msg_ccrq *)dat; 821 822 ND_TCHECK(ptr->call_id); 823 pptp_call_id_print(ndo, &ptr->call_id); 824 ND_TCHECK(ptr->reserved1); 825 826 return; 827 828 trunc: 829 ND_PRINT((ndo, "%s", tstr)); 830 } 831 832 static void 833 pptp_cdn_print(netdissect_options *ndo, 834 const u_char *dat) 835 { 836 struct pptp_msg_cdn *ptr = (struct pptp_msg_cdn *)dat; 837 838 ND_TCHECK(ptr->call_id); 839 pptp_call_id_print(ndo, &ptr->call_id); 840 ND_TCHECK(ptr->result_code); 841 pptp_result_code_print(ndo, &ptr->result_code, PPTP_CTRL_MSG_TYPE_CDN); 842 ND_TCHECK(ptr->err_code); 843 pptp_err_code_print(ndo, &ptr->err_code); 844 ND_TCHECK(ptr->cause_code); 845 pptp_cause_code_print(ndo, &ptr->cause_code); 846 ND_TCHECK(ptr->reserved1); 847 ND_TCHECK(ptr->call_stats); 848 ND_PRINT((ndo, " CALL_STATS(%.128s)", ptr->call_stats)); 849 850 return; 851 852 trunc: 853 ND_PRINT((ndo, "%s", tstr)); 854 } 855 856 static void 857 pptp_wen_print(netdissect_options *ndo, 858 const u_char *dat) 859 { 860 struct pptp_msg_wen *ptr = (struct pptp_msg_wen *)dat; 861 862 ND_TCHECK(ptr->peer_call_id); 863 pptp_peer_call_id_print(ndo, &ptr->peer_call_id); 864 ND_TCHECK(ptr->reserved1); 865 ND_TCHECK(ptr->crc_err); 866 ND_PRINT((ndo, " CRC_ERR(%u)", EXTRACT_32BITS(&ptr->crc_err))); 867 ND_TCHECK(ptr->framing_err); 868 ND_PRINT((ndo, " FRAMING_ERR(%u)", EXTRACT_32BITS(&ptr->framing_err))); 869 ND_TCHECK(ptr->hardware_overrun); 870 ND_PRINT((ndo, " HARDWARE_OVERRUN(%u)", EXTRACT_32BITS(&ptr->hardware_overrun))); 871 ND_TCHECK(ptr->buffer_overrun); 872 ND_PRINT((ndo, " BUFFER_OVERRUN(%u)", EXTRACT_32BITS(&ptr->buffer_overrun))); 873 ND_TCHECK(ptr->timeout_err); 874 ND_PRINT((ndo, " TIMEOUT_ERR(%u)", EXTRACT_32BITS(&ptr->timeout_err))); 875 ND_TCHECK(ptr->align_err); 876 ND_PRINT((ndo, " ALIGN_ERR(%u)", EXTRACT_32BITS(&ptr->align_err))); 877 878 return; 879 880 trunc: 881 ND_PRINT((ndo, "%s", tstr)); 882 } 883 884 static void 885 pptp_sli_print(netdissect_options *ndo, 886 const u_char *dat) 887 { 888 struct pptp_msg_sli *ptr = (struct pptp_msg_sli *)dat; 889 890 ND_TCHECK(ptr->peer_call_id); 891 pptp_peer_call_id_print(ndo, &ptr->peer_call_id); 892 ND_TCHECK(ptr->reserved1); 893 ND_TCHECK(ptr->send_accm); 894 ND_PRINT((ndo, " SEND_ACCM(0x%08x)", EXTRACT_32BITS(&ptr->send_accm))); 895 ND_TCHECK(ptr->recv_accm); 896 ND_PRINT((ndo, " RECV_ACCM(0x%08x)", EXTRACT_32BITS(&ptr->recv_accm))); 897 898 return; 899 900 trunc: 901 ND_PRINT((ndo, "%s", tstr)); 902 } 903 904 void 905 pptp_print(netdissect_options *ndo, 906 const u_char *dat) 907 { 908 const struct pptp_hdr *hdr; 909 uint32_t mc; 910 uint16_t ctrl_msg_type; 911 912 ND_PRINT((ndo, ": pptp")); 913 914 hdr = (struct pptp_hdr *)dat; 915 916 ND_TCHECK(hdr->length); 917 if (ndo->ndo_vflag) { 918 ND_PRINT((ndo, " Length=%u", EXTRACT_16BITS(&hdr->length))); 919 } 920 ND_TCHECK(hdr->msg_type); 921 if (ndo->ndo_vflag) { 922 switch(EXTRACT_16BITS(&hdr->msg_type)) { 923 case PPTP_MSG_TYPE_CTRL: 924 ND_PRINT((ndo, " CTRL-MSG")); 925 break; 926 case PPTP_MSG_TYPE_MGMT: 927 ND_PRINT((ndo, " MGMT-MSG")); 928 break; 929 default: 930 ND_PRINT((ndo, " UNKNOWN-MSG-TYPE")); 931 break; 932 } 933 } 934 935 ND_TCHECK(hdr->magic_cookie); 936 mc = EXTRACT_32BITS(&hdr->magic_cookie); 937 if (mc != PPTP_MAGIC_COOKIE) { 938 ND_PRINT((ndo, " UNEXPECTED Magic-Cookie!!(%08x)", mc)); 939 } 940 if (ndo->ndo_vflag || mc != PPTP_MAGIC_COOKIE) { 941 ND_PRINT((ndo, " Magic-Cookie=%08x", mc)); 942 } 943 ND_TCHECK(hdr->ctrl_msg_type); 944 ctrl_msg_type = EXTRACT_16BITS(&hdr->ctrl_msg_type); 945 if (ctrl_msg_type < PPTP_MAX_MSGTYPE_INDEX) { 946 ND_PRINT((ndo, " CTRL_MSGTYPE=%s", 947 pptp_message_type_string[ctrl_msg_type])); 948 } else { 949 ND_PRINT((ndo, " UNKNOWN_CTRL_MSGTYPE(%u)", ctrl_msg_type)); 950 } 951 ND_TCHECK(hdr->reserved0); 952 953 dat += 12; 954 955 switch(ctrl_msg_type) { 956 case PPTP_CTRL_MSG_TYPE_SCCRQ: 957 pptp_sccrq_print(ndo, dat); 958 break; 959 case PPTP_CTRL_MSG_TYPE_SCCRP: 960 pptp_sccrp_print(ndo, dat); 961 break; 962 case PPTP_CTRL_MSG_TYPE_StopCCRQ: 963 pptp_stopccrq_print(ndo, dat); 964 break; 965 case PPTP_CTRL_MSG_TYPE_StopCCRP: 966 pptp_stopccrp_print(ndo, dat); 967 break; 968 case PPTP_CTRL_MSG_TYPE_ECHORQ: 969 pptp_echorq_print(ndo, dat); 970 break; 971 case PPTP_CTRL_MSG_TYPE_ECHORP: 972 pptp_echorp_print(ndo, dat); 973 break; 974 case PPTP_CTRL_MSG_TYPE_OCRQ: 975 pptp_ocrq_print(ndo, dat); 976 break; 977 case PPTP_CTRL_MSG_TYPE_OCRP: 978 pptp_ocrp_print(ndo, dat); 979 break; 980 case PPTP_CTRL_MSG_TYPE_ICRQ: 981 pptp_icrq_print(ndo, dat); 982 break; 983 case PPTP_CTRL_MSG_TYPE_ICRP: 984 pptp_icrp_print(ndo, dat); 985 break; 986 case PPTP_CTRL_MSG_TYPE_ICCN: 987 pptp_iccn_print(ndo, dat); 988 break; 989 case PPTP_CTRL_MSG_TYPE_CCRQ: 990 pptp_ccrq_print(ndo, dat); 991 break; 992 case PPTP_CTRL_MSG_TYPE_CDN: 993 pptp_cdn_print(ndo, dat); 994 break; 995 case PPTP_CTRL_MSG_TYPE_WEN: 996 pptp_wen_print(ndo, dat); 997 break; 998 case PPTP_CTRL_MSG_TYPE_SLI: 999 pptp_sli_print(ndo, dat); 1000 break; 1001 default: 1002 /* do nothing */ 1003 break; 1004 } 1005 1006 return; 1007 1008 trunc: 1009 ND_PRINT((ndo, "%s", tstr)); 1010 } 1011