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Use more ND_TCHECK_n()/ND_TTEST_n() macros
[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_BE_U_4(bearer_cap) & PPTP_BEARER_CAP_DIGITAL_MASK ? "D" : "",
278 EXTRACT_BE_U_4(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_BE_U_4(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_BE_U_2(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_BE_U_2(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_BE_U_2(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_BE_U_4(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, "?", EXTRACT_U_1(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_BE_U_2(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_BE_U_4(framing_cap) & PPTP_FRAMING_CAP_ASYNC_MASK) {
359 ND_PRINT((ndo, "A")); /* Async */
360 }
361 if (EXTRACT_BE_U_4(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_BE_U_4(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_BE_U_4(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_BE_U_2(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_BE_U_2(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_BE_U_4(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_BE_U_2(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_BE_U_2(proto_ver) >> 8,
430 EXTRACT_BE_U_2(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_BE_U_2(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, "?", EXTRACT_U_1(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_BE_U_4(&ptr->min_bps)));
676 ND_TCHECK(ptr->max_bps);
677 ND_PRINT((ndo, " MAX_BPS(%u)", EXTRACT_BE_U_4(&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_BE_U_2(&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_BE_U_2(&ptr->dialed_no_len)));
747 ND_TCHECK(ptr->dialing_no_len);
748 ND_PRINT((ndo, " DIALING_NO_LEN(%u)", EXTRACT_BE_U_2(&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_BE_U_4(&ptr->crc_err)));
863 ND_TCHECK(ptr->framing_err);
864 ND_PRINT((ndo, " FRAMING_ERR(%u)", EXTRACT_BE_U_4(&ptr->framing_err)));
865 ND_TCHECK(ptr->hardware_overrun);
866 ND_PRINT((ndo, " HARDWARE_OVERRUN(%u)", EXTRACT_BE_U_4(&ptr->hardware_overrun)));
867 ND_TCHECK(ptr->buffer_overrun);
868 ND_PRINT((ndo, " BUFFER_OVERRUN(%u)", EXTRACT_BE_U_4(&ptr->buffer_overrun)));
869 ND_TCHECK(ptr->timeout_err);
870 ND_PRINT((ndo, " TIMEOUT_ERR(%u)", EXTRACT_BE_U_4(&ptr->timeout_err)));
871 ND_TCHECK(ptr->align_err);
872 ND_PRINT((ndo, " ALIGN_ERR(%u)", EXTRACT_BE_U_4(&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_BE_U_4(&ptr->send_accm)));
891 ND_TCHECK(ptr->recv_accm);
892 ND_PRINT((ndo, " RECV_ACCM(0x%08x)", EXTRACT_BE_U_4(&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_BE_U_2(&hdr->length)));
915 }
916 ND_TCHECK(hdr->msg_type);
917 if (ndo->ndo_vflag) {
918 switch(EXTRACT_BE_U_2(&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_BE_U_4(&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_BE_U_2(&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 }
[mirror] the TCPdump network dissector