xref: /freebsd/contrib/tcpdump/print-smb.c (revision d6b92ffa) 
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 /* \summary: SMB/CIFS printer */
10 
11 #ifdef HAVE_CONFIG_H
12 #include "config.h"
13 #endif
14 
15 #include <netdissect-stdinc.h>
16 
17 #include <string.h>
18 
19 #include "netdissect.h"
20 #include "extract.h"
21 #include "smb.h"
22 
23 static const char tstr[] = "[|SMB]";
24 
25 static int request = 0;
26 static int unicodestr = 0;
27 
28 const u_char *startbuf = NULL;
29 
30 struct smbdescript {
31     const char *req_f1;
32     const char *req_f2;
33     const char *rep_f1;
34     const char *rep_f2;
35     void (*fn)(netdissect_options *, const u_char *, const u_char *, const u_char *, const u_char *);
36 };
37 
38 struct smbdescriptint {
39     const char *req_f1;
40     const char *req_f2;
41     const char *rep_f1;
42     const char *rep_f2;
43     void (*fn)(netdissect_options *, const u_char *, const u_char *, int, int);
44 };
45 
46 struct smbfns
47 {
48     int id;
49     const char *name;
50     int flags;
51     struct smbdescript descript;
52 };
53 
54 struct smbfnsint
55 {
56     int id;
57     const char *name;
58     int flags;
59     struct smbdescriptint descript;
60 };
61 
62 #define DEFDESCRIPT	{ NULL, NULL, NULL, NULL, NULL }
63 
64 #define FLG_CHAIN	(1 << 0)
65 
66 static const struct smbfns *
67 smbfind(int id, const struct smbfns *list)
68 {
69     int sindex;
70 
71     for (sindex = 0; list[sindex].name; sindex++)
72 	if (list[sindex].id == id)
73 	    return(&list[sindex]);
74 
75     return(&list[0]);
76 }
77 
78 static const struct smbfnsint *
79 smbfindint(int id, const struct smbfnsint *list)
80 {
81     int sindex;
82 
83     for (sindex = 0; list[sindex].name; sindex++)
84 	if (list[sindex].id == id)
85 	    return(&list[sindex]);
86 
87     return(&list[0]);
88 }
89 
90 static void
91 trans2_findfirst(netdissect_options *ndo,
92                  const u_char *param, const u_char *data, int pcnt, int dcnt)
93 {
94     const char *fmt;
95 
96     if (request)
97 	fmt = "Attribute=[A]\nSearchCount=[d]\nFlags=[w]\nLevel=[dP4]\nFile=[S]\n";
98     else
99 	fmt = "Handle=[w]\nCount=[d]\nEOS=[w]\nEoffset=[d]\nLastNameOfs=[w]\n";
100 
101     smb_fdata(ndo, param, fmt, param + pcnt, unicodestr);
102     if (dcnt) {
103 	ND_PRINT((ndo, "data:\n"));
104 	smb_print_data(ndo, data, dcnt);
105     }
106 }
107 
108 static void
109 trans2_qfsinfo(netdissect_options *ndo,
110                const u_char *param, const u_char *data, int pcnt, int dcnt)
111 {
112     static int level = 0;
113     const char *fmt="";
114 
115     if (request) {
116 	ND_TCHECK2(*param, 2);
117 	level = EXTRACT_LE_16BITS(param);
118 	fmt = "InfoLevel=[d]\n";
119 	smb_fdata(ndo, param, fmt, param + pcnt, unicodestr);
120     } else {
121 	switch (level) {
122 	case 1:
123 	    fmt = "idFileSystem=[W]\nSectorUnit=[D]\nUnit=[D]\nAvail=[D]\nSectorSize=[d]\n";
124 	    break;
125 	case 2:
126 	    fmt = "CreationTime=[T2]VolNameLength=[lb]\nVolumeLabel=[c]\n";
127 	    break;
128 	case 0x105:
129 	    fmt = "Capabilities=[W]\nMaxFileLen=[D]\nVolNameLen=[lD]\nVolume=[C]\n";
130 	    break;
131 	default:
132 	    fmt = "UnknownLevel\n";
133 	    break;
134 	}
135 	smb_fdata(ndo, data, fmt, data + dcnt, unicodestr);
136     }
137     if (dcnt) {
138 	ND_PRINT((ndo, "data:\n"));
139 	smb_print_data(ndo, data, dcnt);
140     }
141     return;
142 trunc:
143     ND_PRINT((ndo, "%s", tstr));
144 }
145 
146 static const struct smbfnsint trans2_fns[] = {
147     { 0, "TRANSACT2_OPEN", 0,
148 	{ "Flags2=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]\nOFun=[w]\nSize=[D]\nRes=([w, w, w, w, w])\nPath=[S]",
149 	  NULL,
150 	  "Handle=[d]\nAttrib=[A]\nTime=[T2]\nSize=[D]\nAccess=[w]\nType=[w]\nState=[w]\nAction=[w]\nInode=[W]\nOffErr=[d]\n|EALength=[d]\n",
151 	  NULL, NULL }},
152     { 1, "TRANSACT2_FINDFIRST", 0,
153 	{ NULL, NULL, NULL, NULL, trans2_findfirst }},
154     { 2, "TRANSACT2_FINDNEXT", 0, DEFDESCRIPT },
155     { 3, "TRANSACT2_QFSINFO", 0,
156 	{ NULL, NULL, NULL, NULL, trans2_qfsinfo }},
157     { 4, "TRANSACT2_SETFSINFO", 0, DEFDESCRIPT },
158     { 5, "TRANSACT2_QPATHINFO", 0, DEFDESCRIPT },
159     { 6, "TRANSACT2_SETPATHINFO", 0, DEFDESCRIPT },
160     { 7, "TRANSACT2_QFILEINFO", 0, DEFDESCRIPT },
161     { 8, "TRANSACT2_SETFILEINFO", 0, DEFDESCRIPT },
162     { 9, "TRANSACT2_FSCTL", 0, DEFDESCRIPT },
163     { 10, "TRANSACT2_IOCTL", 0, DEFDESCRIPT },
164     { 11, "TRANSACT2_FINDNOTIFYFIRST", 0, DEFDESCRIPT },
165     { 12, "TRANSACT2_FINDNOTIFYNEXT", 0, DEFDESCRIPT },
166     { 13, "TRANSACT2_MKDIR", 0, DEFDESCRIPT },
167     { -1, NULL, 0, DEFDESCRIPT }
168 };
169 
170 
171 static void
172 print_trans2(netdissect_options *ndo,
173              const u_char *words, const u_char *dat, const u_char *buf, const u_char *maxbuf)
174 {
175     u_int bcc;
176     static const struct smbfnsint *fn = &trans2_fns[0];
177     const u_char *data, *param;
178     const u_char *w = words + 1;
179     const char *f1 = NULL, *f2 = NULL;
180     int pcnt, dcnt;
181 
182     ND_TCHECK(words[0]);
183     if (request) {
184 	ND_TCHECK2(w[14 * 2], 2);
185 	pcnt = EXTRACT_LE_16BITS(w + 9 * 2);
186 	param = buf + EXTRACT_LE_16BITS(w + 10 * 2);
187 	dcnt = EXTRACT_LE_16BITS(w + 11 * 2);
188 	data = buf + EXTRACT_LE_16BITS(w + 12 * 2);
189 	fn = smbfindint(EXTRACT_LE_16BITS(w + 14 * 2), trans2_fns);
190     } else {
191 	if (words[0] == 0) {
192 	    ND_PRINT((ndo, "%s\n", fn->name));
193 	    ND_PRINT((ndo, "Trans2Interim\n"));
194 	    return;
195 	}
196 	ND_TCHECK2(w[7 * 2], 2);
197 	pcnt = EXTRACT_LE_16BITS(w + 3 * 2);
198 	param = buf + EXTRACT_LE_16BITS(w + 4 * 2);
199 	dcnt = EXTRACT_LE_16BITS(w + 6 * 2);
200 	data = buf + EXTRACT_LE_16BITS(w + 7 * 2);
201     }
202 
203     ND_PRINT((ndo, "%s param_length=%d data_length=%d\n", fn->name, pcnt, dcnt));
204 
205     if (request) {
206 	if (words[0] == 8) {
207 	    smb_fdata(ndo, words + 1,
208 		"Trans2Secondary\nTotParam=[d]\nTotData=[d]\nParamCnt=[d]\nParamOff=[d]\nParamDisp=[d]\nDataCnt=[d]\nDataOff=[d]\nDataDisp=[d]\nHandle=[d]\n",
209 		maxbuf, unicodestr);
210 	    return;
211 	} else {
212 	    smb_fdata(ndo, words + 1,
213 		"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",
214 		words + 1 + 14 * 2, unicodestr);
215 	}
216 	f1 = fn->descript.req_f1;
217 	f2 = fn->descript.req_f2;
218     } else {
219 	smb_fdata(ndo, words + 1,
220 	    "TotParam=[d]\nTotData=[d]\nRes1=[w]\nParamCnt=[d]\nParamOff=[d]\nParamDisp[d]\nDataCnt=[d]\nDataOff=[d]\nDataDisp=[d]\nSetupCnt=[b][P1]\n",
221 	    words + 1 + 10 * 2, unicodestr);
222 	f1 = fn->descript.rep_f1;
223 	f2 = fn->descript.rep_f2;
224     }
225 
226     ND_TCHECK2(*dat, 2);
227     bcc = EXTRACT_LE_16BITS(dat);
228     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
229     if (fn->descript.fn)
230 	(*fn->descript.fn)(ndo, param, data, pcnt, dcnt);
231     else {
232 	smb_fdata(ndo, param, f1 ? f1 : "Parameters=\n", param + pcnt, unicodestr);
233 	smb_fdata(ndo, data, f2 ? f2 : "Data=\n", data + dcnt, unicodestr);
234     }
235     return;
236 trunc:
237     ND_PRINT((ndo, "%s", tstr));
238 }
239 
240 static void
241 print_browse(netdissect_options *ndo,
242              const u_char *param, int paramlen, const u_char *data, int datalen)
243 {
244     const u_char *maxbuf = data + datalen;
245     int command;
246 
247     ND_TCHECK(data[0]);
248     command = data[0];
249 
250     smb_fdata(ndo, param, "BROWSE PACKET\n|Param ", param+paramlen, unicodestr);
251 
252     switch (command) {
253     case 0xF:
254 	data = smb_fdata(ndo, data,
255 	    "BROWSE PACKET:\nType=[B] (LocalMasterAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[d]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nElectionVersion=[w]\nBrowserConstant=[w]\n",
256 	    maxbuf, unicodestr);
257 	break;
258 
259     case 0x1:
260 	data = smb_fdata(ndo, data,
261 	    "BROWSE PACKET:\nType=[B] (HostAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[d]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nElectionVersion=[w]\nBrowserConstant=[w]\n",
262 	    maxbuf, unicodestr);
263 	break;
264 
265     case 0x2:
266 	data = smb_fdata(ndo, data,
267 	    "BROWSE PACKET:\nType=[B] (AnnouncementRequest)\nFlags=[B]\nReplySystemName=[S]\n",
268 	    maxbuf, unicodestr);
269 	break;
270 
271     case 0xc:
272 	data = smb_fdata(ndo, data,
273 	    "BROWSE PACKET:\nType=[B] (WorkgroupAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[d]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nCommentPointer=[W]\nServerName=[S]\n",
274 	    maxbuf, unicodestr);
275 	break;
276 
277     case 0x8:
278 	data = smb_fdata(ndo, data,
279 	    "BROWSE PACKET:\nType=[B] (ElectionFrame)\nElectionVersion=[B]\nOSSummary=[W]\nUptime=[(W, W)]\nServerName=[S]\n",
280 	    maxbuf, unicodestr);
281 	break;
282 
283     case 0xb:
284 	data = smb_fdata(ndo, data,
285 	    "BROWSE PACKET:\nType=[B] (BecomeBackupBrowser)\nName=[S]\n",
286 	    maxbuf, unicodestr);
287 	break;
288 
289     case 0x9:
290 	data = smb_fdata(ndo, data,
291 	    "BROWSE PACKET:\nType=[B] (GetBackupList)\nListCount?=[B]\nToken=[W]\n",
292 	    maxbuf, unicodestr);
293 	break;
294 
295     case 0xa:
296 	data = smb_fdata(ndo, data,
297 	    "BROWSE PACKET:\nType=[B] (BackupListResponse)\nServerCount?=[B]\nToken=[W]\n*Name=[S]\n",
298 	    maxbuf, unicodestr);
299 	break;
300 
301     case 0xd:
302 	data = smb_fdata(ndo, data,
303 	    "BROWSE PACKET:\nType=[B] (MasterAnnouncement)\nMasterName=[S]\n",
304 	    maxbuf, unicodestr);
305 	break;
306 
307     case 0xe:
308 	data = smb_fdata(ndo, data,
309 	    "BROWSE PACKET:\nType=[B] (ResetBrowser)\nOptions=[B]\n", maxbuf, unicodestr);
310 	break;
311 
312     default:
313 	data = smb_fdata(ndo, data, "Unknown Browser Frame ", maxbuf, unicodestr);
314 	break;
315     }
316     return;
317 trunc:
318     ND_PRINT((ndo, "%s", tstr));
319 }
320 
321 
322 static void
323 print_ipc(netdissect_options *ndo,
324           const u_char *param, int paramlen, const u_char *data, int datalen)
325 {
326     if (paramlen)
327 	smb_fdata(ndo, param, "Command=[w]\nStr1=[S]\nStr2=[S]\n", param + paramlen,
328 	    unicodestr);
329     if (datalen)
330 	smb_fdata(ndo, data, "IPC ", data + datalen, unicodestr);
331 }
332 
333 
334 static void
335 print_trans(netdissect_options *ndo,
336             const u_char *words, const u_char *data1, const u_char *buf, const u_char *maxbuf)
337 {
338     u_int bcc;
339     const char *f1, *f2, *f3, *f4;
340     const u_char *data, *param;
341     const u_char *w = words + 1;
342     int datalen, paramlen;
343 
344     if (request) {
345 	ND_TCHECK2(w[12 * 2], 2);
346 	paramlen = EXTRACT_LE_16BITS(w + 9 * 2);
347 	param = buf + EXTRACT_LE_16BITS(w + 10 * 2);
348 	datalen = EXTRACT_LE_16BITS(w + 11 * 2);
349 	data = buf + EXTRACT_LE_16BITS(w + 12 * 2);
350 	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";
351 	f2 = "|Name=[S]\n";
352 	f3 = "|Param ";
353 	f4 = "|Data ";
354     } else {
355 	ND_TCHECK2(w[7 * 2], 2);
356 	paramlen = EXTRACT_LE_16BITS(w + 3 * 2);
357 	param = buf + EXTRACT_LE_16BITS(w + 4 * 2);
358 	datalen = EXTRACT_LE_16BITS(w + 6 * 2);
359 	data = buf + EXTRACT_LE_16BITS(w + 7 * 2);
360 	f1 = "TotParamCnt=[d] \nTotDataCnt=[d] \nRes1=[d]\nParamCnt=[d] \nParamOff=[d] \nRes2=[d] \nDataCnt=[d] \nDataOff=[d] \nRes3=[d]\nLsetup=[d]\n";
361 	f2 = "|Unknown ";
362 	f3 = "|Param ";
363 	f4 = "|Data ";
364     }
365 
366     smb_fdata(ndo, words + 1, f1, min(words + 1 + 2 * words[0], maxbuf),
367         unicodestr);
368 
369     ND_TCHECK2(*data1, 2);
370     bcc = EXTRACT_LE_16BITS(data1);
371     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
372     if (bcc > 0) {
373 	smb_fdata(ndo, data1 + 2, f2, maxbuf - (paramlen + datalen), unicodestr);
374 
375 	if (strcmp((const char *)(data1 + 2), "\\MAILSLOT\\BROWSE") == 0) {
376 	    print_browse(ndo, param, paramlen, data, datalen);
377 	    return;
378 	}
379 
380 	if (strcmp((const char *)(data1 + 2), "\\PIPE\\LANMAN") == 0) {
381 	    print_ipc(ndo, param, paramlen, data, datalen);
382 	    return;
383 	}
384 
385 	if (paramlen)
386 	    smb_fdata(ndo, param, f3, min(param + paramlen, maxbuf), unicodestr);
387 	if (datalen)
388 	    smb_fdata(ndo, data, f4, min(data + datalen, maxbuf), unicodestr);
389     }
390     return;
391 trunc:
392     ND_PRINT((ndo, "%s", tstr));
393 }
394 
395 
396 static void
397 print_negprot(netdissect_options *ndo,
398               const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
399 {
400     u_int wct, bcc;
401     const char *f1 = NULL, *f2 = NULL;
402 
403     ND_TCHECK(words[0]);
404     wct = words[0];
405     if (request)
406 	f2 = "*|Dialect=[Y]\n";
407     else {
408 	if (wct == 1)
409 	    f1 = "Core Protocol\nDialectIndex=[d]";
410 	else if (wct == 17)
411 	    f1 = "NT1 Protocol\nDialectIndex=[d]\nSecMode=[B]\nMaxMux=[d]\nNumVcs=[d]\nMaxBuffer=[D]\nRawSize=[D]\nSessionKey=[W]\nCapabilities=[W]\nServerTime=[T3]TimeZone=[d]\nCryptKey=";
412 	else if (wct == 13)
413 	    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=";
414     }
415 
416     if (f1)
417 	smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
418 	    unicodestr);
419     else
420 	smb_print_data(ndo, words + 1, min(wct * 2, PTR_DIFF(maxbuf, words + 1)));
421 
422     ND_TCHECK2(*data, 2);
423     bcc = EXTRACT_LE_16BITS(data);
424     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
425     if (bcc > 0) {
426 	if (f2)
427 	    smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_16BITS(data),
428 		maxbuf), unicodestr);
429 	else
430 	    smb_print_data(ndo, data + 2, min(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
431     }
432     return;
433 trunc:
434     ND_PRINT((ndo, "%s", tstr));
435 }
436 
437 static void
438 print_sesssetup(netdissect_options *ndo,
439                 const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
440 {
441     u_int wct, bcc;
442     const char *f1 = NULL, *f2 = NULL;
443 
444     ND_TCHECK(words[0]);
445     wct = words[0];
446     if (request) {
447 	if (wct == 10)
448 	    f1 = "Com2=[w]\nOff2=[d]\nBufSize=[d]\nMpxMax=[d]\nVcNum=[d]\nSessionKey=[W]\nPassLen=[d]\nCryptLen=[d]\nCryptOff=[d]\nPass&Name=\n";
449 	else
450 	    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";
451     } else {
452 	if (wct == 3) {
453 	    f1 = "Com2=[w]\nOff2=[d]\nAction=[w]\n";
454 	} else if (wct == 13) {
455 	    f1 = "Com2=[B]\nRes=[B]\nOff2=[d]\nAction=[w]\n";
456 	    f2 = "NativeOS=[S]\nNativeLanMan=[S]\nPrimaryDomain=[S]\n";
457 	}
458     }
459 
460     if (f1)
461 	smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
462 	    unicodestr);
463     else
464 	smb_print_data(ndo, words + 1, min(wct * 2, PTR_DIFF(maxbuf, words + 1)));
465 
466     ND_TCHECK2(*data, 2);
467     bcc = EXTRACT_LE_16BITS(data);
468     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
469     if (bcc > 0) {
470 	if (f2)
471 	    smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_16BITS(data),
472 		maxbuf), unicodestr);
473 	else
474 	    smb_print_data(ndo, data + 2, min(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
475     }
476     return;
477 trunc:
478     ND_PRINT((ndo, "%s", tstr));
479 }
480 
481 static void
482 print_lockingandx(netdissect_options *ndo,
483                   const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
484 {
485     u_int wct, bcc;
486     const u_char *maxwords;
487     const char *f1 = NULL, *f2 = NULL;
488 
489     ND_TCHECK(words[0]);
490     wct = words[0];
491     if (request) {
492 	f1 = "Com2=[w]\nOff2=[d]\nHandle=[d]\nLockType=[w]\nTimeOut=[D]\nUnlockCount=[d]\nLockCount=[d]\n";
493 	ND_TCHECK(words[7]);
494 	if (words[7] & 0x10)
495 	    f2 = "*Process=[d]\n[P2]Offset=[M]\nLength=[M]\n";
496 	else
497 	    f2 = "*Process=[d]\nOffset=[D]\nLength=[D]\n";
498     } else {
499 	f1 = "Com2=[w]\nOff2=[d]\n";
500     }
501 
502     maxwords = min(words + 1 + wct * 2, maxbuf);
503     if (wct)
504 	smb_fdata(ndo, words + 1, f1, maxwords, unicodestr);
505 
506     ND_TCHECK2(*data, 2);
507     bcc = EXTRACT_LE_16BITS(data);
508     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
509     if (bcc > 0) {
510 	if (f2)
511 	    smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_16BITS(data),
512 		maxbuf), unicodestr);
513 	else
514 	    smb_print_data(ndo, data + 2, min(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
515     }
516     return;
517 trunc:
518     ND_PRINT((ndo, "%s", tstr));
519 }
520 
521 
522 static const struct smbfns smb_fns[] = {
523     { -1, "SMBunknown", 0, DEFDESCRIPT },
524 
525     { SMBtcon, "SMBtcon", 0,
526 	{ NULL, "Path=[Z]\nPassword=[Z]\nDevice=[Z]\n",
527 	  "MaxXmit=[d]\nTreeId=[d]\n", NULL,
528 	  NULL } },
529 
530     { SMBtdis, "SMBtdis", 0, DEFDESCRIPT },
531     { SMBexit,  "SMBexit", 0, DEFDESCRIPT },
532     { SMBioctl, "SMBioctl", 0, DEFDESCRIPT },
533 
534     { SMBecho, "SMBecho", 0,
535 	{ "ReverbCount=[d]\n", NULL,
536 	  "SequenceNum=[d]\n", NULL,
537 	  NULL } },
538 
539     { SMBulogoffX, "SMBulogoffX", FLG_CHAIN, DEFDESCRIPT },
540 
541     { SMBgetatr, "SMBgetatr", 0,
542 	{ NULL, "Path=[Z]\n",
543 	  "Attribute=[A]\nTime=[T2]Size=[D]\nRes=([w,w,w,w,w])\n", NULL,
544 	  NULL } },
545 
546     { SMBsetatr, "SMBsetatr", 0,
547 	{ "Attribute=[A]\nTime=[T2]Res=([w,w,w,w,w])\n", "Path=[Z]\n",
548 	  NULL, NULL, NULL } },
549 
550     { SMBchkpth, "SMBchkpth", 0,
551        { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
552 
553     { SMBsearch, "SMBsearch", 0,
554 	{ "Count=[d]\nAttrib=[A]\n",
555 	  "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\nRes2=[W]\n",
556 	  "Count=[d]\n",
557 	  "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",
558 	  NULL } },
559 
560     { SMBopen, "SMBopen", 0,
561 	{ "Mode=[w]\nAttribute=[A]\n", "Path=[Z]\n",
562 	  "Handle=[d]\nOAttrib=[A]\nTime=[T2]Size=[D]\nAccess=[w]\n",
563 	  NULL, NULL } },
564 
565     { SMBcreate, "SMBcreate", 0,
566 	{ "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[d]\n", NULL, NULL } },
567 
568     { SMBmknew, "SMBmknew", 0,
569 	{ "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[d]\n", NULL, NULL } },
570 
571     { SMBunlink, "SMBunlink", 0,
572 	{ "Attrib=[A]\n", "Path=[Z]\n", NULL, NULL, NULL } },
573 
574     { SMBread, "SMBread", 0,
575 	{ "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
576 	  "Count=[d]\nRes=([w,w,w,w])\n", NULL, NULL } },
577 
578     { SMBwrite, "SMBwrite", 0,
579 	{ "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
580 	  "Count=[d]\n", NULL, NULL } },
581 
582     { SMBclose, "SMBclose", 0,
583 	{ "Handle=[d]\nTime=[T2]", NULL, NULL, NULL, NULL } },
584 
585     { SMBmkdir, "SMBmkdir", 0,
586 	{ NULL, "Path=[Z]\n", NULL, NULL, NULL } },
587 
588     { SMBrmdir, "SMBrmdir", 0,
589 	{ NULL, "Path=[Z]\n", NULL, NULL, NULL } },
590 
591     { SMBdskattr, "SMBdskattr", 0,
592 	{ NULL, NULL,
593 	  "TotalUnits=[d]\nBlocksPerUnit=[d]\nBlockSize=[d]\nFreeUnits=[d]\nMedia=[w]\n",
594 	  NULL, NULL } },
595 
596     { SMBmv, "SMBmv", 0,
597 	{ "Attrib=[A]\n", "OldPath=[Z]\nNewPath=[Z]\n", NULL, NULL, NULL } },
598 
599     /*
600      * this is a Pathworks specific call, allowing the
601      * changing of the root path
602      */
603     { pSETDIR, "SMBsetdir", 0, { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
604 
605     { SMBlseek, "SMBlseek", 0,
606 	{ "Handle=[d]\nMode=[w]\nOffset=[D]\n", "Offset=[D]\n", NULL, NULL, NULL } },
607 
608     { SMBflush, "SMBflush", 0, { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
609 
610     { SMBsplopen, "SMBsplopen", 0,
611 	{ "SetupLen=[d]\nMode=[w]\n", "Ident=[Z]\n", "Handle=[d]\n",
612 	  NULL, NULL } },
613 
614     { SMBsplclose, "SMBsplclose", 0,
615 	{ "Handle=[d]\n", NULL, NULL, NULL, NULL } },
616 
617     { SMBsplretq, "SMBsplretq", 0,
618 	{ "MaxCount=[d]\nStartIndex=[d]\n", NULL,
619 	  "Count=[d]\nIndex=[d]\n",
620 	  "*Time=[T2]Status=[B]\nJobID=[d]\nSize=[D]\nRes=[B]Name=[s16]\n",
621 	  NULL } },
622 
623     { SMBsplwr, "SMBsplwr", 0,
624 	{ "Handle=[d]\n", NULL, NULL, NULL, NULL } },
625 
626     { SMBlock, "SMBlock", 0,
627 	{ "Handle=[d]\nCount=[D]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
628 
629     { SMBunlock, "SMBunlock", 0,
630 	{ "Handle=[d]\nCount=[D]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
631 
632     /* CORE+ PROTOCOL FOLLOWS */
633 
634     { SMBreadbraw, "SMBreadbraw", 0,
635 	{ "Handle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nRes=[d]\n",
636 	  NULL, NULL, NULL, NULL } },
637 
638     { SMBwritebraw, "SMBwritebraw", 0,
639 	{ "Handle=[d]\nTotalCount=[d]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\n|DataSize=[d]\nDataOff=[d]\n",
640 	  NULL, "WriteRawAck", NULL, NULL } },
641 
642     { SMBwritec, "SMBwritec", 0,
643 	{ NULL, NULL, "Count=[d]\n", NULL, NULL } },
644 
645     { SMBwriteclose, "SMBwriteclose", 0,
646 	{ "Handle=[d]\nCount=[d]\nOffset=[D]\nTime=[T2]Res=([w,w,w,w,w,w])",
647 	  NULL, "Count=[d]\n", NULL, NULL } },
648 
649     { SMBlockread, "SMBlockread", 0,
650 	{ "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
651 	  "Count=[d]\nRes=([w,w,w,w])\n", NULL, NULL } },
652 
653     { SMBwriteunlock, "SMBwriteunlock", 0,
654 	{ "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
655 	  "Count=[d]\n", NULL, NULL } },
656 
657     { SMBreadBmpx, "SMBreadBmpx", 0,
658 	{ "Handle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nRes=[w]\n",
659 	  NULL,
660 	  "Offset=[D]\nTotCount=[d]\nRemaining=[d]\nRes=([w,w])\nDataSize=[d]\nDataOff=[d]\n",
661 	  NULL, NULL } },
662 
663     { SMBwriteBmpx, "SMBwriteBmpx", 0,
664 	{ "Handle=[d]\nTotCount=[d]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\nDataSize=[d]\nDataOff=[d]\n", NULL,
665 	  "Remaining=[d]\n", NULL, NULL } },
666 
667     { SMBwriteBs, "SMBwriteBs", 0,
668 	{ "Handle=[d]\nTotCount=[d]\nOffset=[D]\nRes=[W]\nDataSize=[d]\nDataOff=[d]\n",
669 	  NULL, "Count=[d]\n", NULL, NULL } },
670 
671     { SMBsetattrE, "SMBsetattrE", 0,
672 	{ "Handle=[d]\nCreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]", NULL,
673 	  NULL, NULL, NULL } },
674 
675     { SMBgetattrE, "SMBgetattrE", 0,
676 	{ "Handle=[d]\n", NULL,
677 	  "CreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]Size=[D]\nAllocSize=[D]\nAttribute=[A]\n",
678 	  NULL, NULL } },
679 
680     { SMBtranss, "SMBtranss", 0, DEFDESCRIPT },
681     { SMBioctls, "SMBioctls", 0, DEFDESCRIPT },
682 
683     { SMBcopy, "SMBcopy", 0,
684 	{ "TreeID2=[d]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
685 	  "CopyCount=[d]\n",  "|ErrStr=[S]\n",  NULL } },
686 
687     { SMBmove, "SMBmove", 0,
688 	{ "TreeID2=[d]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
689 	  "MoveCount=[d]\n",  "|ErrStr=[S]\n",  NULL } },
690 
691     { SMBopenX, "SMBopenX", FLG_CHAIN,
692 	{ "Com2=[w]\nOff2=[d]\nFlags=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]OFun=[w]\nSize=[D]\nTimeOut=[D]\nRes=[W]\n",
693 	  "Path=[S]\n",
694 	  "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",
695 	  NULL, NULL } },
696 
697     { SMBreadX, "SMBreadX", FLG_CHAIN,
698 	{ "Com2=[w]\nOff2=[d]\nHandle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nCountLeft=[d]\n",
699 	  NULL,
700 	  "Com2=[w]\nOff2=[d]\nRemaining=[d]\nRes=[W]\nDataSize=[d]\nDataOff=[d]\nRes=([w,w,w,w])\n",
701 	  NULL, NULL } },
702 
703     { SMBwriteX, "SMBwriteX", FLG_CHAIN,
704 	{ "Com2=[w]\nOff2=[d]\nHandle=[d]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nCountLeft=[d]\nRes=[w]\nDataSize=[d]\nDataOff=[d]\n",
705 	  NULL,
706 	  "Com2=[w]\nOff2=[d]\nCount=[d]\nRemaining=[d]\nRes=[W]\n",
707 	  NULL, NULL } },
708 
709     { SMBffirst, "SMBffirst", 0,
710 	{ "Count=[d]\nAttrib=[A]\n",
711 	  "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
712 	  "Count=[d]\n",
713 	  "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",
714 	  NULL } },
715 
716     { SMBfunique, "SMBfunique", 0,
717 	{ "Count=[d]\nAttrib=[A]\n",
718 	  "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
719 	  "Count=[d]\n",
720 	  "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",
721 	  NULL } },
722 
723     { SMBfclose, "SMBfclose", 0,
724 	{ "Count=[d]\nAttrib=[A]\n",
725 	  "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
726 	  "Count=[d]\n",
727 	  "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",
728 	  NULL } },
729 
730     { SMBfindnclose, "SMBfindnclose", 0,
731 	{ "Handle=[d]\n", NULL, NULL, NULL, NULL } },
732 
733     { SMBfindclose, "SMBfindclose", 0,
734 	{ "Handle=[d]\n", NULL, NULL, NULL, NULL } },
735 
736     { SMBsends, "SMBsends", 0,
737 	{ NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
738 
739     { SMBsendstrt, "SMBsendstrt", 0,
740 	{ NULL, "Source=[Z]\nDest=[Z]\n", "GroupID=[d]\n", NULL, NULL } },
741 
742     { SMBsendend, "SMBsendend", 0,
743 	{ "GroupID=[d]\n", NULL, NULL, NULL, NULL } },
744 
745     { SMBsendtxt, "SMBsendtxt", 0,
746 	{ "GroupID=[d]\n", NULL, NULL, NULL, NULL } },
747 
748     { SMBsendb, "SMBsendb", 0,
749 	{ NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
750 
751     { SMBfwdname, "SMBfwdname", 0, DEFDESCRIPT },
752     { SMBcancelf, "SMBcancelf", 0, DEFDESCRIPT },
753     { SMBgetmac, "SMBgetmac", 0, DEFDESCRIPT },
754 
755     { SMBnegprot, "SMBnegprot", 0,
756 	{ NULL, NULL, NULL, NULL, print_negprot } },
757 
758     { SMBsesssetupX, "SMBsesssetupX", FLG_CHAIN,
759 	{ NULL, NULL, NULL, NULL, print_sesssetup } },
760 
761     { SMBtconX, "SMBtconX", FLG_CHAIN,
762 	{ "Com2=[w]\nOff2=[d]\nFlags=[w]\nPassLen=[d]\nPasswd&Path&Device=\n",
763 	  NULL, "Com2=[w]\nOff2=[d]\n", "ServiceType=[R]\n", NULL } },
764 
765     { SMBlockingX, "SMBlockingX", FLG_CHAIN,
766 	{ NULL, NULL, NULL, NULL, print_lockingandx } },
767 
768     { SMBtrans2, "SMBtrans2", 0, { NULL, NULL, NULL, NULL, print_trans2 } },
769 
770     { SMBtranss2, "SMBtranss2", 0, DEFDESCRIPT },
771     { SMBctemp, "SMBctemp", 0, DEFDESCRIPT },
772     { SMBreadBs, "SMBreadBs", 0, DEFDESCRIPT },
773     { SMBtrans, "SMBtrans", 0, { NULL, NULL, NULL, NULL, print_trans } },
774 
775     { SMBnttrans, "SMBnttrans", 0, DEFDESCRIPT },
776     { SMBnttranss, "SMBnttranss", 0, DEFDESCRIPT },
777 
778     { SMBntcreateX, "SMBntcreateX", FLG_CHAIN,
779 	{ "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",
780 	  "Path=[C]\n",
781 	  "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",
782 	  NULL, NULL } },
783 
784     { SMBntcancel, "SMBntcancel", 0, DEFDESCRIPT },
785 
786     { -1, NULL, 0, DEFDESCRIPT }
787 };
788 
789 
790 /*
791  * print a SMB message
792  */
793 static void
794 print_smb(netdissect_options *ndo,
795           const u_char *buf, const u_char *maxbuf)
796 {
797     uint16_t flags2;
798     int nterrcodes;
799     int command;
800     uint32_t nterror;
801     const u_char *words, *maxwords, *data;
802     const struct smbfns *fn;
803     const char *fmt_smbheader =
804         "[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";
805     int smboffset;
806 
807     ND_TCHECK(buf[9]);
808     request = (buf[9] & 0x80) ? 0 : 1;
809     startbuf = buf;
810 
811     command = buf[4];
812 
813     fn = smbfind(command, smb_fns);
814 
815     if (ndo->ndo_vflag > 1)
816 	ND_PRINT((ndo, "\n"));
817 
818     ND_PRINT((ndo, "SMB PACKET: %s (%s)\n", fn->name, request ? "REQUEST" : "REPLY"));
819 
820     if (ndo->ndo_vflag < 2)
821 	return;
822 
823     ND_TCHECK_16BITS(&buf[10]);
824     flags2 = EXTRACT_LE_16BITS(&buf[10]);
825     unicodestr = flags2 & 0x8000;
826     nterrcodes = flags2 & 0x4000;
827 
828     /* print out the header */
829     smb_fdata(ndo, buf, fmt_smbheader, buf + 33, unicodestr);
830 
831     if (nterrcodes) {
832     	nterror = EXTRACT_LE_32BITS(&buf[5]);
833 	if (nterror)
834 	    ND_PRINT((ndo, "NTError = %s\n", nt_errstr(nterror)));
835     } else {
836 	if (buf[5])
837 	    ND_PRINT((ndo, "SMBError = %s\n", smb_errstr(buf[5], EXTRACT_LE_16BITS(&buf[7]))));
838     }
839 
840     smboffset = 32;
841 
842     for (;;) {
843 	const char *f1, *f2;
844 	int wct;
845 	u_int bcc;
846 	int newsmboffset;
847 
848 	words = buf + smboffset;
849 	ND_TCHECK(words[0]);
850 	wct = words[0];
851 	data = words + 1 + wct * 2;
852 	maxwords = min(data, maxbuf);
853 
854 	if (request) {
855 	    f1 = fn->descript.req_f1;
856 	    f2 = fn->descript.req_f2;
857 	} else {
858 	    f1 = fn->descript.rep_f1;
859 	    f2 = fn->descript.rep_f2;
860 	}
861 
862 	if (fn->descript.fn)
863 	    (*fn->descript.fn)(ndo, words, data, buf, maxbuf);
864 	else {
865 	    if (wct) {
866 		if (f1)
867 		    smb_fdata(ndo, words + 1, f1, words + 1 + wct * 2, unicodestr);
868 		else {
869 		    int i;
870 		    int v;
871 
872 		    for (i = 0; &words[1 + 2 * i] < maxwords; i++) {
873 			ND_TCHECK2(words[1 + 2 * i], 2);
874 			v = EXTRACT_LE_16BITS(words + 1 + 2 * i);
875 			ND_PRINT((ndo, "smb_vwv[%d]=%d (0x%X)\n", i, v, v));
876 		    }
877 		}
878 	    }
879 
880 	    ND_TCHECK2(*data, 2);
881 	    bcc = EXTRACT_LE_16BITS(data);
882 	    ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
883 	    if (f2) {
884 		if (bcc > 0)
885 		    smb_fdata(ndo, data + 2, f2, data + 2 + bcc, unicodestr);
886 	    } else {
887 		if (bcc > 0) {
888 		    ND_PRINT((ndo, "smb_buf[]=\n"));
889 		    smb_print_data(ndo, data + 2, min(bcc, PTR_DIFF(maxbuf, data + 2)));
890 		}
891 	    }
892 	}
893 
894 	if ((fn->flags & FLG_CHAIN) == 0)
895 	    break;
896 	if (wct == 0)
897 	    break;
898 	ND_TCHECK(words[1]);
899 	command = words[1];
900 	if (command == 0xFF)
901 	    break;
902 	ND_TCHECK2(words[3], 2);
903 	newsmboffset = EXTRACT_LE_16BITS(words + 3);
904 
905 	fn = smbfind(command, smb_fns);
906 
907 	ND_PRINT((ndo, "\nSMB PACKET: %s (%s) (CHAINED)\n",
908 	    fn->name, request ? "REQUEST" : "REPLY"));
909 	if (newsmboffset <= smboffset) {
910 	    ND_PRINT((ndo, "Bad andX offset: %u <= %u\n", newsmboffset, smboffset));
911 	    break;
912 	}
913 	smboffset = newsmboffset;
914     }
915 
916     ND_PRINT((ndo, "\n"));
917     return;
918 trunc:
919     ND_PRINT((ndo, "%s", tstr));
920 }
921 
922 
923 /*
924  * print a NBT packet received across tcp on port 139
925  */
926 void
927 nbt_tcp_print(netdissect_options *ndo,
928               const u_char *data, int length)
929 {
930     int caplen;
931     int type;
932     u_int nbt_len;
933     const u_char *maxbuf;
934 
935     if (length < 4)
936 	goto trunc;
937     if (ndo->ndo_snapend < data)
938 	goto trunc;
939     caplen = ndo->ndo_snapend - data;
940     if (caplen < 4)
941 	goto trunc;
942     maxbuf = data + caplen;
943     type = data[0];
944     nbt_len = EXTRACT_16BITS(data + 2);
945     length -= 4;
946     caplen -= 4;
947 
948     startbuf = data;
949 
950     if (ndo->ndo_vflag < 2) {
951 	ND_PRINT((ndo, " NBT Session Packet: "));
952 	switch (type) {
953 	case 0x00:
954 	    ND_PRINT((ndo, "Session Message"));
955 	    break;
956 
957 	case 0x81:
958 	    ND_PRINT((ndo, "Session Request"));
959 	    break;
960 
961 	case 0x82:
962 	    ND_PRINT((ndo, "Session Granted"));
963 	    break;
964 
965 	case 0x83:
966 	  {
967 	    int ecode;
968 
969 	    if (nbt_len < 4)
970 		goto trunc;
971 	    if (length < 4)
972 		goto trunc;
973 	    if (caplen < 4)
974 		goto trunc;
975 	    ecode = data[4];
976 
977 	    ND_PRINT((ndo, "Session Reject, "));
978 	    switch (ecode) {
979 	    case 0x80:
980 		ND_PRINT((ndo, "Not listening on called name"));
981 		break;
982 	    case 0x81:
983 		ND_PRINT((ndo, "Not listening for calling name"));
984 		break;
985 	    case 0x82:
986 		ND_PRINT((ndo, "Called name not present"));
987 		break;
988 	    case 0x83:
989 		ND_PRINT((ndo, "Called name present, but insufficient resources"));
990 		break;
991 	    default:
992 		ND_PRINT((ndo, "Unspecified error 0x%X", ecode));
993 		break;
994 	    }
995 	  }
996 	    break;
997 
998 	case 0x85:
999 	    ND_PRINT((ndo, "Session Keepalive"));
1000 	    break;
1001 
1002 	default:
1003 	    data = smb_fdata(ndo, data, "Unknown packet type [rB]", maxbuf, 0);
1004 	    break;
1005 	}
1006     } else {
1007 	ND_PRINT((ndo, "\n>>> NBT Session Packet\n"));
1008 	switch (type) {
1009 	case 0x00:
1010 	    data = smb_fdata(ndo, data, "[P1]NBT Session Message\nFlags=[B]\nLength=[rd]\n",
1011 		data + 4, 0);
1012 	    if (data == NULL)
1013 		break;
1014 	    if (nbt_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1015 		if ((int)nbt_len > caplen) {
1016 		    if ((int)nbt_len > length)
1017 			ND_PRINT((ndo, "WARNING: Packet is continued in later TCP segments\n"));
1018 		    else
1019 			ND_PRINT((ndo, "WARNING: Short packet. Try increasing the snap length by %d\n",
1020 			    nbt_len - caplen));
1021 		}
1022 		print_smb(ndo, data, maxbuf > data + nbt_len ? data + nbt_len : maxbuf);
1023 	    } else
1024 		ND_PRINT((ndo, "Session packet:(raw data or continuation?)\n"));
1025 	    break;
1026 
1027 	case 0x81:
1028 	    data = smb_fdata(ndo, data,
1029 		"[P1]NBT Session Request\nFlags=[B]\nLength=[rd]\nDestination=[n1]\nSource=[n1]\n",
1030 		maxbuf, 0);
1031 	    break;
1032 
1033 	case 0x82:
1034 	    data = smb_fdata(ndo, data, "[P1]NBT Session Granted\nFlags=[B]\nLength=[rd]\n", maxbuf, 0);
1035 	    break;
1036 
1037 	case 0x83:
1038 	  {
1039 	    const u_char *origdata;
1040 	    int ecode;
1041 
1042 	    origdata = data;
1043 	    data = smb_fdata(ndo, data, "[P1]NBT SessionReject\nFlags=[B]\nLength=[rd]\nReason=[B]\n",
1044 		maxbuf, 0);
1045 	    if (data == NULL)
1046 		break;
1047 	    if (nbt_len >= 1 && caplen >= 1) {
1048 		ecode = origdata[4];
1049 		switch (ecode) {
1050 		case 0x80:
1051 		    ND_PRINT((ndo, "Not listening on called name\n"));
1052 		    break;
1053 		case 0x81:
1054 		    ND_PRINT((ndo, "Not listening for calling name\n"));
1055 		    break;
1056 		case 0x82:
1057 		    ND_PRINT((ndo, "Called name not present\n"));
1058 		    break;
1059 		case 0x83:
1060 		    ND_PRINT((ndo, "Called name present, but insufficient resources\n"));
1061 		    break;
1062 		default:
1063 		    ND_PRINT((ndo, "Unspecified error 0x%X\n", ecode));
1064 		    break;
1065 		}
1066 	    }
1067 	  }
1068 	    break;
1069 
1070 	case 0x85:
1071 	    data = smb_fdata(ndo, data, "[P1]NBT Session Keepalive\nFlags=[B]\nLength=[rd]\n", maxbuf, 0);
1072 	    break;
1073 
1074 	default:
1075 	    data = smb_fdata(ndo, data, "NBT - Unknown packet type\nType=[B]\n", maxbuf, 0);
1076 	    break;
1077 	}
1078 	ND_PRINT((ndo, "\n"));
1079     }
1080     return;
1081 trunc:
1082     ND_PRINT((ndo, "%s", tstr));
1083 }
1084 
1085 static const struct tok opcode_str[] = {
1086 	{ 0,  "QUERY"                   },
1087 	{ 5,  "REGISTRATION"            },
1088 	{ 6,  "RELEASE"                 },
1089 	{ 7,  "WACK"                    },
1090 	{ 8,  "REFRESH(8)"              },
1091 	{ 9,  "REFRESH"                 },
1092 	{ 15, "MULTIHOMED REGISTRATION" },
1093 	{ 0, NULL }
1094 };
1095 
1096 /*
1097  * print a NBT packet received across udp on port 137
1098  */
1099 void
1100 nbt_udp137_print(netdissect_options *ndo,
1101                  const u_char *data, int length)
1102 {
1103     const u_char *maxbuf = data + length;
1104     int name_trn_id, response, opcode, nm_flags, rcode;
1105     int qdcount, ancount, nscount, arcount;
1106     const u_char *p;
1107     int total, i;
1108 
1109     ND_TCHECK2(data[10], 2);
1110     name_trn_id = EXTRACT_16BITS(data);
1111     response = (data[2] >> 7);
1112     opcode = (data[2] >> 3) & 0xF;
1113     nm_flags = ((data[2] & 0x7) << 4) + (data[3] >> 4);
1114     rcode = data[3] & 0xF;
1115     qdcount = EXTRACT_16BITS(data + 4);
1116     ancount = EXTRACT_16BITS(data + 6);
1117     nscount = EXTRACT_16BITS(data + 8);
1118     arcount = EXTRACT_16BITS(data + 10);
1119     startbuf = data;
1120 
1121     if (maxbuf <= data)
1122 	return;
1123 
1124     if (ndo->ndo_vflag > 1)
1125 	ND_PRINT((ndo, "\n>>> "));
1126 
1127     ND_PRINT((ndo, "NBT UDP PACKET(137): %s", tok2str(opcode_str, "OPUNKNOWN", opcode)));
1128     if (response) {
1129         ND_PRINT((ndo, "; %s", rcode ? "NEGATIVE" : "POSITIVE"));
1130     }
1131     ND_PRINT((ndo, "; %s; %s", response ? "RESPONSE" : "REQUEST",
1132               (nm_flags & 1) ? "BROADCAST" : "UNICAST"));
1133 
1134     if (ndo->ndo_vflag < 2)
1135 	return;
1136 
1137     ND_PRINT((ndo, "\nTrnID=0x%X\nOpCode=%d\nNmFlags=0x%X\nRcode=%d\nQueryCount=%d\nAnswerCount=%d\nAuthorityCount=%d\nAddressRecCount=%d\n",
1138 	name_trn_id, opcode, nm_flags, rcode, qdcount, ancount, nscount,
1139 	arcount));
1140 
1141     p = data + 12;
1142 
1143     total = ancount + nscount + arcount;
1144 
1145     if (qdcount > 100 || total > 100) {
1146 	ND_PRINT((ndo, "Corrupt packet??\n"));
1147 	return;
1148     }
1149 
1150     if (qdcount) {
1151 	ND_PRINT((ndo, "QuestionRecords:\n"));
1152 	for (i = 0; i < qdcount; i++) {
1153 	    p = smb_fdata(ndo, p,
1154 		"|Name=[n1]\nQuestionType=[rw]\nQuestionClass=[rw]\n#",
1155 		maxbuf, 0);
1156 	    if (p == NULL)
1157 		goto out;
1158 	}
1159     }
1160 
1161     if (total) {
1162 	ND_PRINT((ndo, "\nResourceRecords:\n"));
1163 	for (i = 0; i < total; i++) {
1164 	    int rdlen;
1165 	    int restype;
1166 
1167 	    p = smb_fdata(ndo, p, "Name=[n1]\n#", maxbuf, 0);
1168 	    if (p == NULL)
1169 		goto out;
1170 	    ND_TCHECK_16BITS(p);
1171 	    restype = EXTRACT_16BITS(p);
1172 	    p = smb_fdata(ndo, p, "ResType=[rw]\nResClass=[rw]\nTTL=[rD]\n", p + 8, 0);
1173 	    if (p == NULL)
1174 		goto out;
1175 	    ND_TCHECK_16BITS(p);
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 		    smb_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
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
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 static 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
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
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