1 /*
2 * Copyright (C) Andrew Tridgell 1995-1999
3 *
4 * This software may be distributed either under the terms of the
5 * BSD-style license that accompanies tcpdump or the GNU GPL version 2
6 * or later
7 */
8
9 #include <sys/cdefs.h>
10 #ifndef lint
11 __RCSID("$NetBSD: print-smb.c,v 1.5 2015/03/31 21:59:35 christos Exp $");
12 #endif
13
14 #define NETDISSECT_REWORKED
15 #ifdef HAVE_CONFIG_H
16 #include "config.h"
17 #endif
18
19 #include <tcpdump-stdinc.h>
20
21 #include <string.h>
22
23 #include "interface.h"
24 #include "extract.h"
25 #include "smb.h"
26
27 static const char tstr[] = "[|SMB]";
28
29 static int request = 0;
30 static int unicodestr = 0;
31
32 const u_char *startbuf = NULL;
33
34 struct smbdescript {
35 const char *req_f1;
36 const char *req_f2;
37 const char *rep_f1;
38 const char *rep_f2;
39 void (*fn)(netdissect_options *, const u_char *, const u_char *, const u_char *, const u_char *);
40 };
41
42 struct smbdescriptint {
43 const char *req_f1;
44 const char *req_f2;
45 const char *rep_f1;
46 const char *rep_f2;
47 void (*fn)(netdissect_options *, const u_char *, const u_char *, int, int);
48 };
49
50 struct smbfns
51 {
52 int id;
53 const char *name;
54 int flags;
55 struct smbdescript descript;
56 };
57
58 struct smbfnsint
59 {
60 int id;
61 const char *name;
62 int flags;
63 struct smbdescriptint descript;
64 };
65
66 #define DEFDESCRIPT { NULL, NULL, NULL, NULL, NULL }
67
68 #define FLG_CHAIN (1 << 0)
69
70 static const struct smbfns *
smbfind(int id,const struct smbfns * list)71 smbfind(int id, const struct smbfns *list)
72 {
73 int sindex;
74
75 for (sindex = 0; list[sindex].name; sindex++)
76 if (list[sindex].id == id)
77 return(&list[sindex]);
78
79 return(&list[0]);
80 }
81
82 static const struct smbfnsint *
smbfindint(int id,const struct smbfnsint * list)83 smbfindint(int id, const struct smbfnsint *list)
84 {
85 int sindex;
86
87 for (sindex = 0; list[sindex].name; sindex++)
88 if (list[sindex].id == id)
89 return(&list[sindex]);
90
91 return(&list[0]);
92 }
93
94 static void
trans2_findfirst(netdissect_options * ndo,const u_char * param,const u_char * data,int pcnt,int dcnt)95 trans2_findfirst(netdissect_options *ndo,
96 const u_char *param, const u_char *data, int pcnt, int dcnt)
97 {
98 const char *fmt;
99
100 if (request)
101 fmt = "Attribute=[A]\nSearchCount=[d]\nFlags=[w]\nLevel=[dP4]\nFile=[S]\n";
102 else
103 fmt = "Handle=[w]\nCount=[d]\nEOS=[w]\nEoffset=[d]\nLastNameOfs=[w]\n";
104
105 smb_fdata(ndo, param, fmt, param + pcnt, unicodestr);
106 if (dcnt) {
107 ND_PRINT((ndo, "data:\n"));
108 print_data(ndo, data, dcnt);
109 }
110 }
111
112 static void
trans2_qfsinfo(netdissect_options * ndo,const u_char * param,const u_char * data,int pcnt,int dcnt)113 trans2_qfsinfo(netdissect_options *ndo,
114 const u_char *param, const u_char *data, int pcnt, int dcnt)
115 {
116 static int level = 0;
117 const char *fmt="";
118
119 if (request) {
120 ND_TCHECK2(*param, 2);
121 level = EXTRACT_LE_16BITS(param);
122 fmt = "InfoLevel=[d]\n";
123 smb_fdata(ndo, param, fmt, param + pcnt, unicodestr);
124 } else {
125 switch (level) {
126 case 1:
127 fmt = "idFileSystem=[W]\nSectorUnit=[D]\nUnit=[D]\nAvail=[D]\nSectorSize=[d]\n";
128 break;
129 case 2:
130 fmt = "CreationTime=[T2]VolNameLength=[lb]\nVolumeLabel=[c]\n";
131 break;
132 case 0x105:
133 fmt = "Capabilities=[W]\nMaxFileLen=[D]\nVolNameLen=[lD]\nVolume=[C]\n";
134 break;
135 default:
136 fmt = "UnknownLevel\n";
137 break;
138 }
139 smb_fdata(ndo, data, fmt, data + dcnt, unicodestr);
140 }
141 if (dcnt) {
142 ND_PRINT((ndo, "data:\n"));
143 print_data(ndo, data, dcnt);
144 }
145 return;
146 trunc:
147 ND_PRINT((ndo, "%s", tstr));
148 }
149
150 static const struct smbfnsint trans2_fns[] = {
151 { 0, "TRANSACT2_OPEN", 0,
152 { "Flags2=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]\nOFun=[w]\nSize=[D]\nRes=([w, w, w, w, w])\nPath=[S]",
153 NULL,
154 "Handle=[d]\nAttrib=[A]\nTime=[T2]\nSize=[D]\nAccess=[w]\nType=[w]\nState=[w]\nAction=[w]\nInode=[W]\nOffErr=[d]\n|EALength=[d]\n",
155 NULL, NULL }},
156 { 1, "TRANSACT2_FINDFIRST", 0,
157 { NULL, NULL, NULL, NULL, trans2_findfirst }},
158 { 2, "TRANSACT2_FINDNEXT", 0, DEFDESCRIPT },
159 { 3, "TRANSACT2_QFSINFO", 0,
160 { NULL, NULL, NULL, NULL, trans2_qfsinfo }},
161 { 4, "TRANSACT2_SETFSINFO", 0, DEFDESCRIPT },
162 { 5, "TRANSACT2_QPATHINFO", 0, DEFDESCRIPT },
163 { 6, "TRANSACT2_SETPATHINFO", 0, DEFDESCRIPT },
164 { 7, "TRANSACT2_QFILEINFO", 0, DEFDESCRIPT },
165 { 8, "TRANSACT2_SETFILEINFO", 0, DEFDESCRIPT },
166 { 9, "TRANSACT2_FSCTL", 0, DEFDESCRIPT },
167 { 10, "TRANSACT2_IOCTL", 0, DEFDESCRIPT },
168 { 11, "TRANSACT2_FINDNOTIFYFIRST", 0, DEFDESCRIPT },
169 { 12, "TRANSACT2_FINDNOTIFYNEXT", 0, DEFDESCRIPT },
170 { 13, "TRANSACT2_MKDIR", 0, DEFDESCRIPT },
171 { -1, NULL, 0, DEFDESCRIPT }
172 };
173
174
175 static void
print_trans2(netdissect_options * ndo,const u_char * words,const u_char * dat,const u_char * buf,const u_char * maxbuf)176 print_trans2(netdissect_options *ndo,
177 const u_char *words, const u_char *dat, const u_char *buf, const u_char *maxbuf)
178 {
179 u_int bcc;
180 static const struct smbfnsint *fn = &trans2_fns[0];
181 const u_char *data, *param;
182 const u_char *w = words + 1;
183 const char *f1 = NULL, *f2 = NULL;
184 int pcnt, dcnt;
185
186 ND_TCHECK(words[0]);
187 if (request) {
188 ND_TCHECK2(w[14 * 2], 2);
189 pcnt = EXTRACT_LE_16BITS(w + 9 * 2);
190 param = buf + EXTRACT_LE_16BITS(w + 10 * 2);
191 dcnt = EXTRACT_LE_16BITS(w + 11 * 2);
192 data = buf + EXTRACT_LE_16BITS(w + 12 * 2);
193 fn = smbfindint(EXTRACT_LE_16BITS(w + 14 * 2), trans2_fns);
194 } else {
195 if (words[0] == 0) {
196 ND_PRINT((ndo, "%s\n", fn->name));
197 ND_PRINT((ndo, "Trans2Interim\n"));
198 return;
199 }
200 ND_TCHECK2(w[7 * 2], 2);
201 pcnt = EXTRACT_LE_16BITS(w + 3 * 2);
202 param = buf + EXTRACT_LE_16BITS(w + 4 * 2);
203 dcnt = EXTRACT_LE_16BITS(w + 6 * 2);
204 data = buf + EXTRACT_LE_16BITS(w + 7 * 2);
205 }
206
207 ND_PRINT((ndo, "%s param_length=%d data_length=%d\n", fn->name, pcnt, dcnt));
208
209 if (request) {
210 if (words[0] == 8) {
211 smb_fdata(ndo, words + 1,
212 "Trans2Secondary\nTotParam=[d]\nTotData=[d]\nParamCnt=[d]\nParamOff=[d]\nParamDisp=[d]\nDataCnt=[d]\nDataOff=[d]\nDataDisp=[d]\nHandle=[d]\n",
213 maxbuf, unicodestr);
214 return;
215 } else {
216 smb_fdata(ndo, words + 1,
217 "TotParam=[d]\nTotData=[d]\nMaxParam=[d]\nMaxData=[d]\nMaxSetup=[b][P1]\nFlags=[w]\nTimeOut=[D]\nRes1=[w]\nParamCnt=[d]\nParamOff=[d]\nDataCnt=[d]\nDataOff=[d]\nSetupCnt=[b][P1]\n",
218 words + 1 + 14 * 2, unicodestr);
219 }
220 f1 = fn->descript.req_f1;
221 f2 = fn->descript.req_f2;
222 } else {
223 smb_fdata(ndo, words + 1,
224 "TotParam=[d]\nTotData=[d]\nRes1=[w]\nParamCnt=[d]\nParamOff=[d]\nParamDisp[d]\nDataCnt=[d]\nDataOff=[d]\nDataDisp=[d]\nSetupCnt=[b][P1]\n",
225 words + 1 + 10 * 2, unicodestr);
226 f1 = fn->descript.rep_f1;
227 f2 = fn->descript.rep_f2;
228 }
229
230 ND_TCHECK2(*dat, 2);
231 bcc = EXTRACT_LE_16BITS(dat);
232 ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
233 if (fn->descript.fn)
234 (*fn->descript.fn)(ndo, param, data, pcnt, dcnt);
235 else {
236 smb_fdata(ndo, param, f1 ? f1 : "Parameters=\n", param + pcnt, unicodestr);
237 smb_fdata(ndo, data, f2 ? f2 : "Data=\n", data + dcnt, unicodestr);
238 }
239 return;
240 trunc:
241 ND_PRINT((ndo, "%s", tstr));
242 }
243
244 static void
print_browse(netdissect_options * ndo,const u_char * param,int paramlen,const u_char * data,int datalen)245 print_browse(netdissect_options *ndo,
246 const u_char *param, int paramlen, const u_char *data, int datalen)
247 {
248 const u_char *maxbuf = data + datalen;
249 int command;
250
251 ND_TCHECK(data[0]);
252 command = data[0];
253
254 smb_fdata(ndo, param, "BROWSE PACKET\n|Param ", param+paramlen, unicodestr);
255
256 switch (command) {
257 case 0xF:
258 data = smb_fdata(ndo, data,
259 "BROWSE PACKET:\nType=[B] (LocalMasterAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[d]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nElectionVersion=[w]\nBrowserConstant=[w]\n",
260 maxbuf, unicodestr);
261 break;
262
263 case 0x1:
264 data = smb_fdata(ndo, data,
265 "BROWSE PACKET:\nType=[B] (HostAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[d]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nElectionVersion=[w]\nBrowserConstant=[w]\n",
266 maxbuf, unicodestr);
267 break;
268
269 case 0x2:
270 data = smb_fdata(ndo, data,
271 "BROWSE PACKET:\nType=[B] (AnnouncementRequest)\nFlags=[B]\nReplySystemName=[S]\n",
272 maxbuf, unicodestr);
273 break;
274
275 case 0xc:
276 data = smb_fdata(ndo, data,
277 "BROWSE PACKET:\nType=[B] (WorkgroupAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[d]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nCommentPointer=[W]\nServerName=[S]\n",
278 maxbuf, unicodestr);
279 break;
280
281 case 0x8:
282 data = smb_fdata(ndo, data,
283 "BROWSE PACKET:\nType=[B] (ElectionFrame)\nElectionVersion=[B]\nOSSummary=[W]\nUptime=[(W, W)]\nServerName=[S]\n",
284 maxbuf, unicodestr);
285 break;
286
287 case 0xb:
288 data = smb_fdata(ndo, data,
289 "BROWSE PACKET:\nType=[B] (BecomeBackupBrowser)\nName=[S]\n",
290 maxbuf, unicodestr);
291 break;
292
293 case 0x9:
294 data = smb_fdata(ndo, data,
295 "BROWSE PACKET:\nType=[B] (GetBackupList)\nListCount?=[B]\nToken=[W]\n",
296 maxbuf, unicodestr);
297 break;
298
299 case 0xa:
300 data = smb_fdata(ndo, data,
301 "BROWSE PACKET:\nType=[B] (BackupListResponse)\nServerCount?=[B]\nToken=[W]\n*Name=[S]\n",
302 maxbuf, unicodestr);
303 break;
304
305 case 0xd:
306 data = smb_fdata(ndo, data,
307 "BROWSE PACKET:\nType=[B] (MasterAnnouncement)\nMasterName=[S]\n",
308 maxbuf, unicodestr);
309 break;
310
311 case 0xe:
312 data = smb_fdata(ndo, data,
313 "BROWSE PACKET:\nType=[B] (ResetBrowser)\nOptions=[B]\n", maxbuf, unicodestr);
314 break;
315
316 default:
317 data = smb_fdata(ndo, data, "Unknown Browser Frame ", maxbuf, unicodestr);
318 break;
319 }
320 return;
321 trunc:
322 ND_PRINT((ndo, "%s", tstr));
323 }
324
325
326 static void
print_ipc(netdissect_options * ndo,const u_char * param,int paramlen,const u_char * data,int datalen)327 print_ipc(netdissect_options *ndo,
328 const u_char *param, int paramlen, const u_char *data, int datalen)
329 {
330 if (paramlen)
331 smb_fdata(ndo, param, "Command=[w]\nStr1=[S]\nStr2=[S]\n", param + paramlen,
332 unicodestr);
333 if (datalen)
334 smb_fdata(ndo, data, "IPC ", data + datalen, unicodestr);
335 }
336
337
338 static void
print_trans(netdissect_options * ndo,const u_char * words,const u_char * data1,const u_char * buf,const u_char * maxbuf)339 print_trans(netdissect_options *ndo,
340 const u_char *words, const u_char *data1, const u_char *buf, const u_char *maxbuf)
341 {
342 u_int bcc;
343 const char *f1, *f2, *f3, *f4;
344 const u_char *data, *param;
345 const u_char *w = words + 1;
346 int datalen, paramlen;
347
348 if (request) {
349 ND_TCHECK2(w[12 * 2], 2);
350 paramlen = EXTRACT_LE_16BITS(w + 9 * 2);
351 param = buf + EXTRACT_LE_16BITS(w + 10 * 2);
352 datalen = EXTRACT_LE_16BITS(w + 11 * 2);
353 data = buf + EXTRACT_LE_16BITS(w + 12 * 2);
354 f1 = "TotParamCnt=[d] \nTotDataCnt=[d] \nMaxParmCnt=[d] \nMaxDataCnt=[d]\nMaxSCnt=[d] \nTransFlags=[w] \nRes1=[w] \nRes2=[w] \nRes3=[w]\nParamCnt=[d] \nParamOff=[d] \nDataCnt=[d] \nDataOff=[d] \nSUCnt=[d]\n";
355 f2 = "|Name=[S]\n";
356 f3 = "|Param ";
357 f4 = "|Data ";
358 } else {
359 ND_TCHECK2(w[7 * 2], 2);
360 paramlen = EXTRACT_LE_16BITS(w + 3 * 2);
361 param = buf + EXTRACT_LE_16BITS(w + 4 * 2);
362 datalen = EXTRACT_LE_16BITS(w + 6 * 2);
363 data = buf + EXTRACT_LE_16BITS(w + 7 * 2);
364 f1 = "TotParamCnt=[d] \nTotDataCnt=[d] \nRes1=[d]\nParamCnt=[d] \nParamOff=[d] \nRes2=[d] \nDataCnt=[d] \nDataOff=[d] \nRes3=[d]\nLsetup=[d]\n";
365 f2 = "|Unknown ";
366 f3 = "|Param ";
367 f4 = "|Data ";
368 }
369
370 smb_fdata(ndo, words + 1, f1, min(words + 1 + 2 * words[0], maxbuf),
371 unicodestr);
372
373 ND_TCHECK2(*data1, 2);
374 bcc = EXTRACT_LE_16BITS(data1);
375 ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
376 if (bcc > 0) {
377 smb_fdata(ndo, data1 + 2, f2, maxbuf - (paramlen + datalen), unicodestr);
378
379 if (strcmp((const char *)(data1 + 2), "\\MAILSLOT\\BROWSE") == 0) {
380 print_browse(ndo, param, paramlen, data, datalen);
381 return;
382 }
383
384 if (strcmp((const char *)(data1 + 2), "\\PIPE\\LANMAN") == 0) {
385 print_ipc(ndo, param, paramlen, data, datalen);
386 return;
387 }
388
389 if (paramlen)
390 smb_fdata(ndo, param, f3, min(param + paramlen, maxbuf), unicodestr);
391 if (datalen)
392 smb_fdata(ndo, data, f4, min(data + datalen, maxbuf), unicodestr);
393 }
394 return;
395 trunc:
396 ND_PRINT((ndo, "%s", tstr));
397 }
398
399
400 static void
print_negprot(netdissect_options * ndo,const u_char * words,const u_char * data,const u_char * buf _U_,const u_char * maxbuf)401 print_negprot(netdissect_options *ndo,
402 const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
403 {
404 u_int wct, bcc;
405 const char *f1 = NULL, *f2 = NULL;
406
407 ND_TCHECK(words[0]);
408 wct = words[0];
409 if (request)
410 f2 = "*|Dialect=[Y]\n";
411 else {
412 if (wct == 1)
413 f1 = "Core Protocol\nDialectIndex=[d]";
414 else if (wct == 17)
415 f1 = "NT1 Protocol\nDialectIndex=[d]\nSecMode=[B]\nMaxMux=[d]\nNumVcs=[d]\nMaxBuffer=[D]\nRawSize=[D]\nSessionKey=[W]\nCapabilities=[W]\nServerTime=[T3]TimeZone=[d]\nCryptKey=";
416 else if (wct == 13)
417 f1 = "Coreplus/Lanman1/Lanman2 Protocol\nDialectIndex=[d]\nSecMode=[w]\nMaxXMit=[d]\nMaxMux=[d]\nMaxVcs=[d]\nBlkMode=[w]\nSessionKey=[W]\nServerTime=[T1]TimeZone=[d]\nRes=[W]\nCryptKey=";
418 }
419
420 if (f1)
421 smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
422 unicodestr);
423 else
424 print_data(ndo, words + 1, min(wct * 2, PTR_DIFF(maxbuf, words + 1)));
425
426 ND_TCHECK2(*data, 2);
427 bcc = EXTRACT_LE_16BITS(data);
428 ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
429 if (bcc > 0) {
430 if (f2)
431 smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_16BITS(data),
432 maxbuf), unicodestr);
433 else
434 print_data(ndo, data + 2, min(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
435 }
436 return;
437 trunc:
438 ND_PRINT((ndo, "%s", tstr));
439 }
440
441 static void
print_sesssetup(netdissect_options * ndo,const u_char * words,const u_char * data,const u_char * buf _U_,const u_char * maxbuf)442 print_sesssetup(netdissect_options *ndo,
443 const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
444 {
445 u_int wct, bcc;
446 const char *f1 = NULL, *f2 = NULL;
447
448 ND_TCHECK(words[0]);
449 wct = words[0];
450 if (request) {
451 if (wct == 10)
452 f1 = "Com2=[w]\nOff2=[d]\nBufSize=[d]\nMpxMax=[d]\nVcNum=[d]\nSessionKey=[W]\nPassLen=[d]\nCryptLen=[d]\nCryptOff=[d]\nPass&Name=\n";
453 else
454 f1 = "Com2=[B]\nRes1=[B]\nOff2=[d]\nMaxBuffer=[d]\nMaxMpx=[d]\nVcNumber=[d]\nSessionKey=[W]\nCaseInsensitivePasswordLength=[d]\nCaseSensitivePasswordLength=[d]\nRes=[W]\nCapabilities=[W]\nPass1&Pass2&Account&Domain&OS&LanMan=\n";
455 } else {
456 if (wct == 3) {
457 f1 = "Com2=[w]\nOff2=[d]\nAction=[w]\n";
458 } else if (wct == 13) {
459 f1 = "Com2=[B]\nRes=[B]\nOff2=[d]\nAction=[w]\n";
460 f2 = "NativeOS=[S]\nNativeLanMan=[S]\nPrimaryDomain=[S]\n";
461 }
462 }
463
464 if (f1)
465 smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
466 unicodestr);
467 else
468 print_data(ndo, words + 1, min(wct * 2, PTR_DIFF(maxbuf, words + 1)));
469
470 ND_TCHECK2(*data, 2);
471 bcc = EXTRACT_LE_16BITS(data);
472 ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
473 if (bcc > 0) {
474 if (f2)
475 smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_16BITS(data),
476 maxbuf), unicodestr);
477 else
478 print_data(ndo, data + 2, min(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
479 }
480 return;
481 trunc:
482 ND_PRINT((ndo, "%s", tstr));
483 }
484
485 static void
print_lockingandx(netdissect_options * ndo,const u_char * words,const u_char * data,const u_char * buf _U_,const u_char * maxbuf)486 print_lockingandx(netdissect_options *ndo,
487 const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
488 {
489 u_int wct, bcc;
490 const u_char *maxwords;
491 const char *f1 = NULL, *f2 = NULL;
492
493 ND_TCHECK(words[0]);
494 wct = words[0];
495 if (request) {
496 f1 = "Com2=[w]\nOff2=[d]\nHandle=[d]\nLockType=[w]\nTimeOut=[D]\nUnlockCount=[d]\nLockCount=[d]\n";
497 ND_TCHECK(words[7]);
498 if (words[7] & 0x10)
499 f2 = "*Process=[d]\n[P2]Offset=[M]\nLength=[M]\n";
500 else
501 f2 = "*Process=[d]\nOffset=[D]\nLength=[D]\n";
502 } else {
503 f1 = "Com2=[w]\nOff2=[d]\n";
504 }
505
506 maxwords = min(words + 1 + wct * 2, maxbuf);
507 if (wct)
508 smb_fdata(ndo, words + 1, f1, maxwords, unicodestr);
509
510 ND_TCHECK2(*data, 2);
511 bcc = EXTRACT_LE_16BITS(data);
512 ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
513 if (bcc > 0) {
514 if (f2)
515 smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_16BITS(data),
516 maxbuf), unicodestr);
517 else
518 print_data(ndo, data + 2, min(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
519 }
520 return;
521 trunc:
522 ND_PRINT((ndo, "%s", tstr));
523 }
524
525
526 static const struct smbfns smb_fns[] = {
527 { -1, "SMBunknown", 0, DEFDESCRIPT },
528
529 { SMBtcon, "SMBtcon", 0,
530 { NULL, "Path=[Z]\nPassword=[Z]\nDevice=[Z]\n",
531 "MaxXmit=[d]\nTreeId=[d]\n", NULL,
532 NULL } },
533
534 { SMBtdis, "SMBtdis", 0, DEFDESCRIPT },
535 { SMBexit, "SMBexit", 0, DEFDESCRIPT },
536 { SMBioctl, "SMBioctl", 0, DEFDESCRIPT },
537
538 { SMBecho, "SMBecho", 0,
539 { "ReverbCount=[d]\n", NULL,
540 "SequenceNum=[d]\n", NULL,
541 NULL } },
542
543 { SMBulogoffX, "SMBulogoffX", FLG_CHAIN, DEFDESCRIPT },
544
545 { SMBgetatr, "SMBgetatr", 0,
546 { NULL, "Path=[Z]\n",
547 "Attribute=[A]\nTime=[T2]Size=[D]\nRes=([w,w,w,w,w])\n", NULL,
548 NULL } },
549
550 { SMBsetatr, "SMBsetatr", 0,
551 { "Attribute=[A]\nTime=[T2]Res=([w,w,w,w,w])\n", "Path=[Z]\n",
552 NULL, NULL, NULL } },
553
554 { SMBchkpth, "SMBchkpth", 0,
555 { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
556
557 { SMBsearch, "SMBsearch", 0,
558 { "Count=[d]\nAttrib=[A]\n",
559 "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\nRes2=[W]\n",
560 "Count=[d]\n",
561 "BlkType=[B]\nBlkLen=[d]\n*\nRes1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\nRes2=[W]\nAttrib=[a]\nTime=[T1]Size=[D]\nName=[s13]\n",
562 NULL } },
563
564 { SMBopen, "SMBopen", 0,
565 { "Mode=[w]\nAttribute=[A]\n", "Path=[Z]\n",
566 "Handle=[d]\nOAttrib=[A]\nTime=[T2]Size=[D]\nAccess=[w]\n",
567 NULL, NULL } },
568
569 { SMBcreate, "SMBcreate", 0,
570 { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[d]\n", NULL, NULL } },
571
572 { SMBmknew, "SMBmknew", 0,
573 { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[d]\n", NULL, NULL } },
574
575 { SMBunlink, "SMBunlink", 0,
576 { "Attrib=[A]\n", "Path=[Z]\n", NULL, NULL, NULL } },
577
578 { SMBread, "SMBread", 0,
579 { "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
580 "Count=[d]\nRes=([w,w,w,w])\n", NULL, NULL } },
581
582 { SMBwrite, "SMBwrite", 0,
583 { "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
584 "Count=[d]\n", NULL, NULL } },
585
586 { SMBclose, "SMBclose", 0,
587 { "Handle=[d]\nTime=[T2]", NULL, NULL, NULL, NULL } },
588
589 { SMBmkdir, "SMBmkdir", 0,
590 { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
591
592 { SMBrmdir, "SMBrmdir", 0,
593 { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
594
595 { SMBdskattr, "SMBdskattr", 0,
596 { NULL, NULL,
597 "TotalUnits=[d]\nBlocksPerUnit=[d]\nBlockSize=[d]\nFreeUnits=[d]\nMedia=[w]\n",
598 NULL, NULL } },
599
600 { SMBmv, "SMBmv", 0,
601 { "Attrib=[A]\n", "OldPath=[Z]\nNewPath=[Z]\n", NULL, NULL, NULL } },
602
603 /*
604 * this is a Pathworks specific call, allowing the
605 * changing of the root path
606 */
607 { pSETDIR, "SMBsetdir", 0, { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
608
609 { SMBlseek, "SMBlseek", 0,
610 { "Handle=[d]\nMode=[w]\nOffset=[D]\n", "Offset=[D]\n", NULL, NULL, NULL } },
611
612 { SMBflush, "SMBflush", 0, { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
613
614 { SMBsplopen, "SMBsplopen", 0,
615 { "SetupLen=[d]\nMode=[w]\n", "Ident=[Z]\n", "Handle=[d]\n",
616 NULL, NULL } },
617
618 { SMBsplclose, "SMBsplclose", 0,
619 { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
620
621 { SMBsplretq, "SMBsplretq", 0,
622 { "MaxCount=[d]\nStartIndex=[d]\n", NULL,
623 "Count=[d]\nIndex=[d]\n",
624 "*Time=[T2]Status=[B]\nJobID=[d]\nSize=[D]\nRes=[B]Name=[s16]\n",
625 NULL } },
626
627 { SMBsplwr, "SMBsplwr", 0,
628 { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
629
630 { SMBlock, "SMBlock", 0,
631 { "Handle=[d]\nCount=[D]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
632
633 { SMBunlock, "SMBunlock", 0,
634 { "Handle=[d]\nCount=[D]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
635
636 /* CORE+ PROTOCOL FOLLOWS */
637
638 { SMBreadbraw, "SMBreadbraw", 0,
639 { "Handle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nRes=[d]\n",
640 NULL, NULL, NULL, NULL } },
641
642 { SMBwritebraw, "SMBwritebraw", 0,
643 { "Handle=[d]\nTotalCount=[d]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\n|DataSize=[d]\nDataOff=[d]\n",
644 NULL, "WriteRawAck", NULL, NULL } },
645
646 { SMBwritec, "SMBwritec", 0,
647 { NULL, NULL, "Count=[d]\n", NULL, NULL } },
648
649 { SMBwriteclose, "SMBwriteclose", 0,
650 { "Handle=[d]\nCount=[d]\nOffset=[D]\nTime=[T2]Res=([w,w,w,w,w,w])",
651 NULL, "Count=[d]\n", NULL, NULL } },
652
653 { SMBlockread, "SMBlockread", 0,
654 { "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
655 "Count=[d]\nRes=([w,w,w,w])\n", NULL, NULL } },
656
657 { SMBwriteunlock, "SMBwriteunlock", 0,
658 { "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
659 "Count=[d]\n", NULL, NULL } },
660
661 { SMBreadBmpx, "SMBreadBmpx", 0,
662 { "Handle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nRes=[w]\n",
663 NULL,
664 "Offset=[D]\nTotCount=[d]\nRemaining=[d]\nRes=([w,w])\nDataSize=[d]\nDataOff=[d]\n",
665 NULL, NULL } },
666
667 { SMBwriteBmpx, "SMBwriteBmpx", 0,
668 { "Handle=[d]\nTotCount=[d]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\nDataSize=[d]\nDataOff=[d]\n", NULL,
669 "Remaining=[d]\n", NULL, NULL } },
670
671 { SMBwriteBs, "SMBwriteBs", 0,
672 { "Handle=[d]\nTotCount=[d]\nOffset=[D]\nRes=[W]\nDataSize=[d]\nDataOff=[d]\n",
673 NULL, "Count=[d]\n", NULL, NULL } },
674
675 { SMBsetattrE, "SMBsetattrE", 0,
676 { "Handle=[d]\nCreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]", NULL,
677 NULL, NULL, NULL } },
678
679 { SMBgetattrE, "SMBgetattrE", 0,
680 { "Handle=[d]\n", NULL,
681 "CreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]Size=[D]\nAllocSize=[D]\nAttribute=[A]\n",
682 NULL, NULL } },
683
684 { SMBtranss, "SMBtranss", 0, DEFDESCRIPT },
685 { SMBioctls, "SMBioctls", 0, DEFDESCRIPT },
686
687 { SMBcopy, "SMBcopy", 0,
688 { "TreeID2=[d]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
689 "CopyCount=[d]\n", "|ErrStr=[S]\n", NULL } },
690
691 { SMBmove, "SMBmove", 0,
692 { "TreeID2=[d]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
693 "MoveCount=[d]\n", "|ErrStr=[S]\n", NULL } },
694
695 { SMBopenX, "SMBopenX", FLG_CHAIN,
696 { "Com2=[w]\nOff2=[d]\nFlags=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]OFun=[w]\nSize=[D]\nTimeOut=[D]\nRes=[W]\n",
697 "Path=[S]\n",
698 "Com2=[w]\nOff2=[d]\nHandle=[d]\nAttrib=[A]\nTime=[T2]Size=[D]\nAccess=[w]\nType=[w]\nState=[w]\nAction=[w]\nFileID=[W]\nRes=[w]\n",
699 NULL, NULL } },
700
701 { SMBreadX, "SMBreadX", FLG_CHAIN,
702 { "Com2=[w]\nOff2=[d]\nHandle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nCountLeft=[d]\n",
703 NULL,
704 "Com2=[w]\nOff2=[d]\nRemaining=[d]\nRes=[W]\nDataSize=[d]\nDataOff=[d]\nRes=([w,w,w,w])\n",
705 NULL, NULL } },
706
707 { SMBwriteX, "SMBwriteX", FLG_CHAIN,
708 { "Com2=[w]\nOff2=[d]\nHandle=[d]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nCountLeft=[d]\nRes=[w]\nDataSize=[d]\nDataOff=[d]\n",
709 NULL,
710 "Com2=[w]\nOff2=[d]\nCount=[d]\nRemaining=[d]\nRes=[W]\n",
711 NULL, NULL } },
712
713 { SMBffirst, "SMBffirst", 0,
714 { "Count=[d]\nAttrib=[A]\n",
715 "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
716 "Count=[d]\n",
717 "BlkType=[B]\nBlkLen=[d]\n*\nRes1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\nRes2=[W]\nAttrib=[a]\nTime=[T1]Size=[D]\nName=[s13]\n",
718 NULL } },
719
720 { SMBfunique, "SMBfunique", 0,
721 { "Count=[d]\nAttrib=[A]\n",
722 "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
723 "Count=[d]\n",
724 "BlkType=[B]\nBlkLen=[d]\n*\nRes1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\nRes2=[W]\nAttrib=[a]\nTime=[T1]Size=[D]\nName=[s13]\n",
725 NULL } },
726
727 { SMBfclose, "SMBfclose", 0,
728 { "Count=[d]\nAttrib=[A]\n",
729 "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
730 "Count=[d]\n",
731 "BlkType=[B]\nBlkLen=[d]\n*\nRes1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\nRes2=[W]\nAttrib=[a]\nTime=[T1]Size=[D]\nName=[s13]\n",
732 NULL } },
733
734 { SMBfindnclose, "SMBfindnclose", 0,
735 { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
736
737 { SMBfindclose, "SMBfindclose", 0,
738 { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
739
740 { SMBsends, "SMBsends", 0,
741 { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
742
743 { SMBsendstrt, "SMBsendstrt", 0,
744 { NULL, "Source=[Z]\nDest=[Z]\n", "GroupID=[d]\n", NULL, NULL } },
745
746 { SMBsendend, "SMBsendend", 0,
747 { "GroupID=[d]\n", NULL, NULL, NULL, NULL } },
748
749 { SMBsendtxt, "SMBsendtxt", 0,
750 { "GroupID=[d]\n", NULL, NULL, NULL, NULL } },
751
752 { SMBsendb, "SMBsendb", 0,
753 { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
754
755 { SMBfwdname, "SMBfwdname", 0, DEFDESCRIPT },
756 { SMBcancelf, "SMBcancelf", 0, DEFDESCRIPT },
757 { SMBgetmac, "SMBgetmac", 0, DEFDESCRIPT },
758
759 { SMBnegprot, "SMBnegprot", 0,
760 { NULL, NULL, NULL, NULL, print_negprot } },
761
762 { SMBsesssetupX, "SMBsesssetupX", FLG_CHAIN,
763 { NULL, NULL, NULL, NULL, print_sesssetup } },
764
765 { SMBtconX, "SMBtconX", FLG_CHAIN,
766 { "Com2=[w]\nOff2=[d]\nFlags=[w]\nPassLen=[d]\nPasswd&Path&Device=\n",
767 NULL, "Com2=[w]\nOff2=[d]\n", "ServiceType=[R]\n", NULL } },
768
769 { SMBlockingX, "SMBlockingX", FLG_CHAIN,
770 { NULL, NULL, NULL, NULL, print_lockingandx } },
771
772 { SMBtrans2, "SMBtrans2", 0, { NULL, NULL, NULL, NULL, print_trans2 } },
773
774 { SMBtranss2, "SMBtranss2", 0, DEFDESCRIPT },
775 { SMBctemp, "SMBctemp", 0, DEFDESCRIPT },
776 { SMBreadBs, "SMBreadBs", 0, DEFDESCRIPT },
777 { SMBtrans, "SMBtrans", 0, { NULL, NULL, NULL, NULL, print_trans } },
778
779 { SMBnttrans, "SMBnttrans", 0, DEFDESCRIPT },
780 { SMBnttranss, "SMBnttranss", 0, DEFDESCRIPT },
781
782 { SMBntcreateX, "SMBntcreateX", FLG_CHAIN,
783 { "Com2=[w]\nOff2=[d]\nRes=[b]\nNameLen=[ld]\nFlags=[W]\nRootDirectoryFid=[D]\nAccessMask=[W]\nAllocationSize=[L]\nExtFileAttributes=[W]\nShareAccess=[W]\nCreateDisposition=[W]\nCreateOptions=[W]\nImpersonationLevel=[W]\nSecurityFlags=[b]\n",
784 "Path=[C]\n",
785 "Com2=[w]\nOff2=[d]\nOplockLevel=[b]\nFid=[d]\nCreateAction=[W]\nCreateTime=[T3]LastAccessTime=[T3]LastWriteTime=[T3]ChangeTime=[T3]ExtFileAttributes=[W]\nAllocationSize=[L]\nEndOfFile=[L]\nFileType=[w]\nDeviceState=[w]\nDirectory=[b]\n",
786 NULL, NULL } },
787
788 { SMBntcancel, "SMBntcancel", 0, DEFDESCRIPT },
789
790 { -1, NULL, 0, DEFDESCRIPT }
791 };
792
793
794 /*
795 * print a SMB message
796 */
797 static void
print_smb(netdissect_options * ndo,const u_char * buf,const u_char * maxbuf)798 print_smb(netdissect_options *ndo,
799 const u_char *buf, const u_char *maxbuf)
800 {
801 uint16_t flags2;
802 int nterrcodes;
803 int command;
804 uint32_t nterror;
805 const u_char *words, *maxwords, *data;
806 const struct smbfns *fn;
807 const char *fmt_smbheader =
808 "[P4]SMB Command = [B]\nError class = [BP1]\nError code = [d]\nFlags1 = [B]\nFlags2 = [B][P13]\nTree ID = [d]\nProc ID = [d]\nUID = [d]\nMID = [d]\nWord Count = [b]\n";
809 int smboffset;
810
811 ND_TCHECK(buf[9]);
812 request = (buf[9] & 0x80) ? 0 : 1;
813 flags2 = EXTRACT_LE_16BITS(&buf[10]);
814 unicodestr = flags2 & 0x8000;
815 nterrcodes = flags2 & 0x4000;
816 startbuf = buf;
817
818 command = buf[4];
819
820 fn = smbfind(command, smb_fns);
821
822 if (ndo->ndo_vflag > 1)
823 ND_PRINT((ndo, "\n"));
824
825 ND_PRINT((ndo, "SMB PACKET: %s (%s)\n", fn->name, request ? "REQUEST" : "REPLY"));
826
827 if (ndo->ndo_vflag < 2)
828 return;
829
830 /* print out the header */
831 smb_fdata(ndo, buf, fmt_smbheader, buf + 33, unicodestr);
832
833 if (nterrcodes) {
834 nterror = EXTRACT_LE_32BITS(&buf[5]);
835 if (nterror)
836 ND_PRINT((ndo, "NTError = %s\n", nt_errstr(nterror)));
837 } else {
838 if (buf[5])
839 ND_PRINT((ndo, "SMBError = %s\n", smb_errstr(buf[5], EXTRACT_LE_16BITS(&buf[7]))));
840 }
841
842 smboffset = 32;
843
844 for (;;) {
845 const char *f1, *f2;
846 int wct;
847 u_int bcc;
848 int newsmboffset;
849
850 words = buf + smboffset;
851 ND_TCHECK(words[0]);
852 wct = words[0];
853 data = words + 1 + wct * 2;
854 maxwords = min(data, maxbuf);
855
856 if (request) {
857 f1 = fn->descript.req_f1;
858 f2 = fn->descript.req_f2;
859 } else {
860 f1 = fn->descript.rep_f1;
861 f2 = fn->descript.rep_f2;
862 }
863
864 if (fn->descript.fn)
865 (*fn->descript.fn)(ndo, words, data, buf, maxbuf);
866 else {
867 if (wct) {
868 if (f1)
869 smb_fdata(ndo, words + 1, f1, words + 1 + wct * 2, unicodestr);
870 else {
871 int i;
872 int v;
873
874 for (i = 0; &words[1 + 2 * i] < maxwords; i++) {
875 ND_TCHECK2(words[1 + 2 * i], 2);
876 v = EXTRACT_LE_16BITS(words + 1 + 2 * i);
877 ND_PRINT((ndo, "smb_vwv[%d]=%d (0x%X)\n", i, v, v));
878 }
879 }
880 }
881
882 ND_TCHECK2(*data, 2);
883 bcc = EXTRACT_LE_16BITS(data);
884 ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
885 if (f2) {
886 if (bcc > 0)
887 smb_fdata(ndo, data + 2, f2, data + 2 + bcc, unicodestr);
888 } else {
889 if (bcc > 0) {
890 ND_PRINT((ndo, "smb_buf[]=\n"));
891 print_data(ndo, data + 2, min(bcc, PTR_DIFF(maxbuf, data + 2)));
892 }
893 }
894 }
895
896 if ((fn->flags & FLG_CHAIN) == 0)
897 break;
898 if (wct == 0)
899 break;
900 ND_TCHECK(words[1]);
901 command = words[1];
902 if (command == 0xFF)
903 break;
904 ND_TCHECK2(words[3], 2);
905 newsmboffset = EXTRACT_LE_16BITS(words + 3);
906
907 fn = smbfind(command, smb_fns);
908
909 ND_PRINT((ndo, "\nSMB PACKET: %s (%s) (CHAINED)\n",
910 fn->name, request ? "REQUEST" : "REPLY"));
911 if (newsmboffset <= smboffset) {
912 ND_PRINT((ndo, "Bad andX offset: %u <= %u\n", newsmboffset, smboffset));
913 break;
914 }
915 smboffset = newsmboffset;
916 }
917
918 ND_PRINT((ndo, "\n"));
919 return;
920 trunc:
921 ND_PRINT((ndo, "%s", tstr));
922 }
923
924
925 /*
926 * print a NBT packet received across tcp on port 139
927 */
928 void
nbt_tcp_print(netdissect_options * ndo,const u_char * data,int length)929 nbt_tcp_print(netdissect_options *ndo,
930 const u_char *data, int length)
931 {
932 int caplen;
933 int type;
934 u_int nbt_len;
935 const u_char *maxbuf;
936
937 if (length < 4)
938 goto trunc;
939 if (ndo->ndo_snapend < data)
940 goto trunc;
941 caplen = ndo->ndo_snapend - data;
942 if (caplen < 4)
943 goto trunc;
944 maxbuf = data + caplen;
945 type = data[0];
946 nbt_len = EXTRACT_16BITS(data + 2);
947 length -= 4;
948 caplen -= 4;
949
950 startbuf = data;
951
952 if (ndo->ndo_vflag < 2) {
953 ND_PRINT((ndo, " NBT Session Packet: "));
954 switch (type) {
955 case 0x00:
956 ND_PRINT((ndo, "Session Message"));
957 break;
958
959 case 0x81:
960 ND_PRINT((ndo, "Session Request"));
961 break;
962
963 case 0x82:
964 ND_PRINT((ndo, "Session Granted"));
965 break;
966
967 case 0x83:
968 {
969 int ecode;
970
971 if (nbt_len < 4)
972 goto trunc;
973 if (length < 4)
974 goto trunc;
975 if (caplen < 4)
976 goto trunc;
977 ecode = data[4];
978
979 ND_PRINT((ndo, "Session Reject, "));
980 switch (ecode) {
981 case 0x80:
982 ND_PRINT((ndo, "Not listening on called name"));
983 break;
984 case 0x81:
985 ND_PRINT((ndo, "Not listening for calling name"));
986 break;
987 case 0x82:
988 ND_PRINT((ndo, "Called name not present"));
989 break;
990 case 0x83:
991 ND_PRINT((ndo, "Called name present, but insufficient resources"));
992 break;
993 default:
994 ND_PRINT((ndo, "Unspecified error 0x%X", ecode));
995 break;
996 }
997 }
998 break;
999
1000 case 0x85:
1001 ND_PRINT((ndo, "Session Keepalive"));
1002 break;
1003
1004 default:
1005 data = smb_fdata(ndo, data, "Unknown packet type [rB]", maxbuf, 0);
1006 break;
1007 }
1008 } else {
1009 ND_PRINT((ndo, "\n>>> NBT Session Packet\n"));
1010 switch (type) {
1011 case 0x00:
1012 data = smb_fdata(ndo, data, "[P1]NBT Session Message\nFlags=[B]\nLength=[rd]\n",
1013 data + 4, 0);
1014 if (data == NULL)
1015 break;
1016 if (nbt_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1017 if ((int)nbt_len > caplen) {
1018 if ((int)nbt_len > length)
1019 ND_PRINT((ndo, "WARNING: Packet is continued in later TCP segments\n"));
1020 else
1021 ND_PRINT((ndo, "WARNING: Short packet. Try increasing the snap length by %d\n",
1022 nbt_len - caplen));
1023 }
1024 print_smb(ndo, data, maxbuf > data + nbt_len ? data + nbt_len : maxbuf);
1025 } else
1026 ND_PRINT((ndo, "Session packet:(raw data or continuation?)\n"));
1027 break;
1028
1029 case 0x81:
1030 data = smb_fdata(ndo, data,
1031 "[P1]NBT Session Request\nFlags=[B]\nLength=[rd]\nDestination=[n1]\nSource=[n1]\n",
1032 maxbuf, 0);
1033 break;
1034
1035 case 0x82:
1036 data = smb_fdata(ndo, data, "[P1]NBT Session Granted\nFlags=[B]\nLength=[rd]\n", maxbuf, 0);
1037 break;
1038
1039 case 0x83:
1040 {
1041 const u_char *origdata;
1042 int ecode;
1043
1044 origdata = data;
1045 data = smb_fdata(ndo, data, "[P1]NBT SessionReject\nFlags=[B]\nLength=[rd]\nReason=[B]\n",
1046 maxbuf, 0);
1047 if (data == NULL)
1048 break;
1049 if (nbt_len >= 1 && caplen >= 1) {
1050 ecode = origdata[4];
1051 switch (ecode) {
1052 case 0x80:
1053 ND_PRINT((ndo, "Not listening on called name\n"));
1054 break;
1055 case 0x81:
1056 ND_PRINT((ndo, "Not listening for calling name\n"));
1057 break;
1058 case 0x82:
1059 ND_PRINT((ndo, "Called name not present\n"));
1060 break;
1061 case 0x83:
1062 ND_PRINT((ndo, "Called name present, but insufficient resources\n"));
1063 break;
1064 default:
1065 ND_PRINT((ndo, "Unspecified error 0x%X\n", ecode));
1066 break;
1067 }
1068 }
1069 }
1070 break;
1071
1072 case 0x85:
1073 data = smb_fdata(ndo, data, "[P1]NBT Session Keepalive\nFlags=[B]\nLength=[rd]\n", maxbuf, 0);
1074 break;
1075
1076 default:
1077 data = smb_fdata(ndo, data, "NBT - Unknown packet type\nType=[B]\n", maxbuf, 0);
1078 break;
1079 }
1080 ND_PRINT((ndo, "\n"));
1081 }
1082 return;
1083 trunc:
1084 ND_PRINT((ndo, "%s", tstr));
1085 }
1086
1087 static const struct tok opcode_str[] = {
1088 { 0, "QUERY" },
1089 { 5, "REGISTRATION" },
1090 { 6, "RELEASE" },
1091 { 7, "WACK" },
1092 { 8, "REFRESH(8)" },
1093 { 9, "REFRESH" },
1094 { 15, "MULTIHOMED REGISTRATION" },
1095 { 0, NULL }
1096 };
1097
1098 /*
1099 * print a NBT packet received across udp on port 137
1100 */
1101 void
nbt_udp137_print(netdissect_options * ndo,const u_char * data,int length)1102 nbt_udp137_print(netdissect_options *ndo,
1103 const u_char *data, int length)
1104 {
1105 const u_char *maxbuf = data + length;
1106 int name_trn_id, response, opcode, nm_flags, rcode;
1107 int qdcount, ancount, nscount, arcount;
1108 const u_char *p;
1109 int total, i;
1110
1111 ND_TCHECK2(data[10], 2);
1112 name_trn_id = EXTRACT_16BITS(data);
1113 response = (data[2] >> 7);
1114 opcode = (data[2] >> 3) & 0xF;
1115 nm_flags = ((data[2] & 0x7) << 4) + (data[3] >> 4);
1116 rcode = data[3] & 0xF;
1117 qdcount = EXTRACT_16BITS(data + 4);
1118 ancount = EXTRACT_16BITS(data + 6);
1119 nscount = EXTRACT_16BITS(data + 8);
1120 arcount = EXTRACT_16BITS(data + 10);
1121 startbuf = data;
1122
1123 if (maxbuf <= data)
1124 return;
1125
1126 if (ndo->ndo_vflag > 1)
1127 ND_PRINT((ndo, "\n>>> "));
1128
1129 ND_PRINT((ndo, "NBT UDP PACKET(137): %s", tok2str(opcode_str, "OPUNKNOWN", opcode)));
1130 if (response) {
1131 ND_PRINT((ndo, "; %s", rcode ? "NEGATIVE" : "POSITIVE"));
1132 }
1133 ND_PRINT((ndo, "; %s; %s", response ? "RESPONSE" : "REQUEST",
1134 (nm_flags & 1) ? "BROADCAST" : "UNICAST"));
1135
1136 if (ndo->ndo_vflag < 2)
1137 return;
1138
1139 ND_PRINT((ndo, "\nTrnID=0x%X\nOpCode=%d\nNmFlags=0x%X\nRcode=%d\nQueryCount=%d\nAnswerCount=%d\nAuthorityCount=%d\nAddressRecCount=%d\n",
1140 name_trn_id, opcode, nm_flags, rcode, qdcount, ancount, nscount,
1141 arcount));
1142
1143 p = data + 12;
1144
1145 total = ancount + nscount + arcount;
1146
1147 if (qdcount > 100 || total > 100) {
1148 ND_PRINT((ndo, "Corrupt packet??\n"));
1149 return;
1150 }
1151
1152 if (qdcount) {
1153 ND_PRINT((ndo, "QuestionRecords:\n"));
1154 for (i = 0; i < qdcount; i++) {
1155 p = smb_fdata(ndo, p,
1156 "|Name=[n1]\nQuestionType=[rw]\nQuestionClass=[rw]\n#",
1157 maxbuf, 0);
1158 if (p == NULL)
1159 goto out;
1160 }
1161 }
1162
1163 if (total) {
1164 ND_PRINT((ndo, "\nResourceRecords:\n"));
1165 for (i = 0; i < total; i++) {
1166 int rdlen;
1167 int restype;
1168
1169 p = smb_fdata(ndo, p, "Name=[n1]\n#", maxbuf, 0);
1170 if (p == NULL)
1171 goto out;
1172 restype = EXTRACT_16BITS(p);
1173 p = smb_fdata(ndo, p, "ResType=[rw]\nResClass=[rw]\nTTL=[rD]\n", p + 8, 0);
1174 if (p == NULL)
1175 goto out;
1176 rdlen = EXTRACT_16BITS(p);
1177 ND_PRINT((ndo, "ResourceLength=%d\nResourceData=\n", rdlen));
1178 p += 2;
1179 if (rdlen == 6) {
1180 p = smb_fdata(ndo, p, "AddrType=[rw]\nAddress=[b.b.b.b]\n", p + rdlen, 0);
1181 if (p == NULL)
1182 goto out;
1183 } else {
1184 if (restype == 0x21) {
1185 int numnames;
1186
1187 ND_TCHECK(*p);
1188 numnames = p[0];
1189 p = smb_fdata(ndo, p, "NumNames=[B]\n", p + 1, 0);
1190 if (p == NULL)
1191 goto out;
1192 while (numnames--) {
1193 p = smb_fdata(ndo, p, "Name=[n2]\t#", maxbuf, 0);
1194 if (p == NULL)
1195 goto out;
1196 ND_TCHECK(*p);
1197 if (p[0] & 0x80)
1198 ND_PRINT((ndo, "<GROUP> "));
1199 switch (p[0] & 0x60) {
1200 case 0x00: ND_PRINT((ndo, "B ")); break;
1201 case 0x20: ND_PRINT((ndo, "P ")); break;
1202 case 0x40: ND_PRINT((ndo, "M ")); break;
1203 case 0x60: ND_PRINT((ndo, "_ ")); break;
1204 }
1205 if (p[0] & 0x10)
1206 ND_PRINT((ndo, "<DEREGISTERING> "));
1207 if (p[0] & 0x08)
1208 ND_PRINT((ndo, "<CONFLICT> "));
1209 if (p[0] & 0x04)
1210 ND_PRINT((ndo, "<ACTIVE> "));
1211 if (p[0] & 0x02)
1212 ND_PRINT((ndo, "<PERMANENT> "));
1213 ND_PRINT((ndo, "\n"));
1214 p += 2;
1215 }
1216 } else {
1217 print_data(ndo, p, min(rdlen, length - (p - data)));
1218 p += rdlen;
1219 }
1220 }
1221 }
1222 }
1223
1224 if (p < maxbuf)
1225 smb_fdata(ndo, p, "AdditionalData:\n", maxbuf, 0);
1226
1227 out:
1228 ND_PRINT((ndo, "\n"));
1229 return;
1230 trunc:
1231 ND_PRINT((ndo, "%s", tstr));
1232 }
1233
1234 /*
1235 * Print an SMB-over-TCP packet received across tcp on port 445
1236 */
1237 void
smb_tcp_print(netdissect_options * ndo,const u_char * data,int length)1238 smb_tcp_print(netdissect_options *ndo,
1239 const u_char * data, int length)
1240 {
1241 int caplen;
1242 u_int smb_len;
1243 const u_char *maxbuf;
1244
1245 if (length < 4)
1246 goto trunc;
1247 if (ndo->ndo_snapend < data)
1248 goto trunc;
1249 caplen = ndo->ndo_snapend - data;
1250 if (caplen < 4)
1251 goto trunc;
1252 maxbuf = data + caplen;
1253 smb_len = EXTRACT_24BITS(data + 1);
1254 length -= 4;
1255 caplen -= 4;
1256
1257 startbuf = data;
1258 data += 4;
1259
1260 if (smb_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1261 if ((int)smb_len > caplen) {
1262 if ((int)smb_len > length)
1263 ND_PRINT((ndo, " WARNING: Packet is continued in later TCP segments\n"));
1264 else
1265 ND_PRINT((ndo, " WARNING: Short packet. Try increasing the snap length by %d\n",
1266 smb_len - caplen));
1267 } else
1268 ND_PRINT((ndo, " "));
1269 print_smb(ndo, data, maxbuf > data + smb_len ? data + smb_len : maxbuf);
1270 } else
1271 ND_PRINT((ndo, " SMB-over-TCP packet:(raw data or continuation?)\n"));
1272 return;
1273 trunc:
1274 ND_PRINT((ndo, "%s", tstr));
1275 }
1276
1277 /*
1278 * print a NBT packet received across udp on port 138
1279 */
1280 void
nbt_udp138_print(netdissect_options * ndo,const u_char * data,int length)1281 nbt_udp138_print(netdissect_options *ndo,
1282 const u_char *data, int length)
1283 {
1284 const u_char *maxbuf = data + length;
1285
1286 if (maxbuf > ndo->ndo_snapend)
1287 maxbuf = ndo->ndo_snapend;
1288 if (maxbuf <= data)
1289 return;
1290 startbuf = data;
1291
1292 if (ndo->ndo_vflag < 2) {
1293 ND_PRINT((ndo, "NBT UDP PACKET(138)"));
1294 return;
1295 }
1296
1297 data = smb_fdata(ndo, data,
1298 "\n>>> NBT UDP PACKET(138) Res=[rw] ID=[rw] IP=[b.b.b.b] Port=[rd] Length=[rd] Res2=[rw]\nSourceName=[n1]\nDestName=[n1]\n#",
1299 maxbuf, 0);
1300
1301 if (data != NULL) {
1302 /* If there isn't enough data for "\377SMB", don't check for it. */
1303 if (&data[3] >= maxbuf)
1304 goto out;
1305
1306 if (memcmp(data, "\377SMB",4) == 0)
1307 print_smb(ndo, data, maxbuf);
1308 }
1309 out:
1310 ND_PRINT((ndo, "\n"));
1311 }
1312
1313
1314 /*
1315 print netbeui frames
1316 */
1317 struct nbf_strings {
1318 const char *name;
1319 const char *nonverbose;
1320 const char *verbose;
1321 } nbf_strings[0x20] = {
1322 { "Add Group Name Query", ", [P23]Name to add=[n2]#",
1323 "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1324 { "Add Name Query", ", [P23]Name to add=[n2]#",
1325 "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1326 { "Name In Conflict", NULL, NULL },
1327 { "Status Query", NULL, NULL },
1328 { NULL, NULL, NULL }, /* not used */
1329 { NULL, NULL, NULL }, /* not used */
1330 { NULL, NULL, NULL }, /* not used */
1331 { "Terminate Trace", NULL, NULL },
1332 { "Datagram", NULL,
1333 "[P7]Destination=[n2]\nSource=[n2]\n" },
1334 { "Broadcast Datagram", NULL,
1335 "[P7]Destination=[n2]\nSource=[n2]\n" },
1336 { "Name Query", ", [P7]Name=[n2]#",
1337 "[P1]SessionNumber=[B]\nNameType=[B][P2]\nResponseCorrelator=[w]\nName=[n2]\nName of sender=[n2]\n" },
1338 { NULL, NULL, NULL }, /* not used */
1339 { NULL, NULL, NULL }, /* not used */
1340 { "Add Name Response", ", [P1]GroupName=[w] [P4]Destination=[n2] Source=[n2]#",
1341 "AddNameInProcess=[B]\nGroupName=[w]\nTransmitCorrelator=[w][P2]\nDestination=[n2]\nSource=[n2]\n" },
1342 { "Name Recognized", NULL,
1343 "[P1]Data2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nDestination=[n2]\nSource=[n2]\n" },
1344 { "Status Response", NULL, NULL },
1345 { NULL, NULL, NULL }, /* not used */
1346 { NULL, NULL, NULL }, /* not used */
1347 { NULL, NULL, NULL }, /* not used */
1348 { "Terminate Trace", NULL, NULL },
1349 { "Data Ack", NULL,
1350 "[P3]TransmitCorrelator=[w][P2]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1351 { "Data First/Middle", NULL,
1352 "Flags=[{RECEIVE_CONTINUE|NO_ACK||PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1353 { "Data Only/Last", NULL,
1354 "Flags=[{|NO_ACK|PIGGYBACK_ACK_ALLOWED|PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1355 { "Session Confirm", NULL,
1356 "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1357 { "Session End", NULL,
1358 "[P1]Data2=[w][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1359 { "Session Initialize", NULL,
1360 "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1361 { "No Receive", NULL,
1362 "Flags=[{|SEND_NO_ACK}]\nDataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1363 { "Receive Outstanding", NULL,
1364 "[P1]DataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1365 { "Receive Continue", NULL,
1366 "[P2]TransmitCorrelator=[w]\n[P2]RemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1367 { NULL, NULL, NULL }, /* not used */
1368 { NULL, NULL, NULL }, /* not used */
1369 { "Session Alive", NULL, NULL }
1370 };
1371
1372 void
netbeui_print(netdissect_options * ndo,u_short control,const u_char * data,int length)1373 netbeui_print(netdissect_options *ndo,
1374 u_short control, const u_char *data, int length)
1375 {
1376 const u_char *maxbuf = data + length;
1377 int len;
1378 int command;
1379 const u_char *data2;
1380 int is_truncated = 0;
1381
1382 if (maxbuf > ndo->ndo_snapend)
1383 maxbuf = ndo->ndo_snapend;
1384 ND_TCHECK(data[4]);
1385 len = EXTRACT_LE_16BITS(data);
1386 command = data[4];
1387 data2 = data + len;
1388 if (data2 >= maxbuf) {
1389 data2 = maxbuf;
1390 is_truncated = 1;
1391 }
1392
1393 startbuf = data;
1394
1395 if (ndo->ndo_vflag < 2) {
1396 ND_PRINT((ndo, "NBF Packet: "));
1397 data = smb_fdata(ndo, data, "[P5]#", maxbuf, 0);
1398 } else {
1399 ND_PRINT((ndo, "\n>>> NBF Packet\nType=0x%X ", control));
1400 data = smb_fdata(ndo, data, "Length=[d] Signature=[w] Command=[B]\n#", maxbuf, 0);
1401 }
1402 if (data == NULL)
1403 goto out;
1404
1405 if (command > 0x1f || nbf_strings[command].name == NULL) {
1406 if (ndo->ndo_vflag < 2)
1407 data = smb_fdata(ndo, data, "Unknown NBF Command#", data2, 0);
1408 else
1409 data = smb_fdata(ndo, data, "Unknown NBF Command\n", data2, 0);
1410 } else {
1411 if (ndo->ndo_vflag < 2) {
1412 ND_PRINT((ndo, "%s", nbf_strings[command].name));
1413 if (nbf_strings[command].nonverbose != NULL)
1414 data = smb_fdata(ndo, data, nbf_strings[command].nonverbose, data2, 0);
1415 } else {
1416 ND_PRINT((ndo, "%s:\n", nbf_strings[command].name));
1417 if (nbf_strings[command].verbose != NULL)
1418 data = smb_fdata(ndo, data, nbf_strings[command].verbose, data2, 0);
1419 else
1420 ND_PRINT((ndo, "\n"));
1421 }
1422 }
1423
1424 if (ndo->ndo_vflag < 2)
1425 return;
1426
1427 if (data == NULL)
1428 goto out;
1429
1430 if (is_truncated) {
1431 /* data2 was past the end of the buffer */
1432 goto out;
1433 }
1434
1435 /* If this isn't a command that would contain an SMB message, quit. */
1436 if (command != 0x08 && command != 0x09 && command != 0x15 &&
1437 command != 0x16)
1438 goto out;
1439
1440 /* If there isn't enough data for "\377SMB", don't look for it. */
1441 if (&data2[3] >= maxbuf)
1442 goto out;
1443
1444 if (memcmp(data2, "\377SMB",4) == 0)
1445 print_smb(ndo, data2, maxbuf);
1446 else {
1447 int i;
1448 for (i = 0; i < 128; i++) {
1449 if (&data2[i + 3] >= maxbuf)
1450 break;
1451 if (memcmp(&data2[i], "\377SMB", 4) == 0) {
1452 ND_PRINT((ndo, "found SMB packet at %d\n", i));
1453 print_smb(ndo, &data2[i], maxbuf);
1454 break;
1455 }
1456 }
1457 }
1458
1459 out:
1460 ND_PRINT((ndo, "\n"));
1461 return;
1462 trunc:
1463 ND_PRINT((ndo, "%s", tstr));
1464 }
1465
1466
1467 /*
1468 * print IPX-Netbios frames
1469 */
1470 void
ipx_netbios_print(netdissect_options * ndo,const u_char * data,u_int length)1471 ipx_netbios_print(netdissect_options *ndo,
1472 const u_char *data, u_int length)
1473 {
1474 /*
1475 * this is a hack till I work out how to parse the rest of the
1476 * NetBIOS-over-IPX stuff
1477 */
1478 int i;
1479 const u_char *maxbuf;
1480
1481 maxbuf = data + length;
1482 /* Don't go past the end of the captured data in the packet. */
1483 if (maxbuf > ndo->ndo_snapend)
1484 maxbuf = ndo->ndo_snapend;
1485 startbuf = data;
1486 for (i = 0; i < 128; i++) {
1487 if (&data[i + 4] > maxbuf)
1488 break;
1489 if (memcmp(&data[i], "\377SMB", 4) == 0) {
1490 smb_fdata(ndo, data, "\n>>> IPX transport ", &data[i], 0);
1491 print_smb(ndo, &data[i], maxbuf);
1492 ND_PRINT((ndo, "\n"));
1493 break;
1494 }
1495 }
1496 if (i == 128)
1497 smb_fdata(ndo, data, "\n>>> Unknown IPX ", maxbuf, 0);
1498 }
1499