contrib/tcpdump/print-pptp.c

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