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
23static const char tstr[] = "[|SMB]";
24
25static int request = 0;
26static int unicodestr = 0;
27
28const u_char *startbuf = NULL;
29
30struct 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
38struct 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
46struct smbfns
47{
48    int id;
49    const char *name;
50    int flags;
51    struct smbdescript descript;
52};
53
54struct 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
66static const struct smbfns *
67smbfind(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
78static const struct smbfnsint *
79smbfindint(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
90static void
91trans2_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
108static void
109trans2_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;
142trunc:
143    ND_PRINT((ndo, "%s", tstr));
144}
145
146static 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
171static void
172print_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;
236trunc:
237    ND_PRINT((ndo, "%s", tstr));
238}
239
240static void
241print_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;
317trunc:
318    ND_PRINT((ndo, "%s", tstr));
319}
320
321
322static void
323print_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
334static void
335print_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#define MAILSLOT_BROWSE_STR "\\MAILSLOT\\BROWSE"
375	ND_TCHECK2(*(data1 + 2), strlen(MAILSLOT_BROWSE_STR) + 1);
376	if (strcmp((const char *)(data1 + 2), MAILSLOT_BROWSE_STR) == 0) {
377	    print_browse(ndo, param, paramlen, data, datalen);
378	    return;
379	}
380#undef MAILSLOT_BROWSE_STR
381
382#define PIPE_LANMAN_STR "\\PIPE\\LANMAN"
383	ND_TCHECK2(*(data1 + 2), strlen(PIPE_LANMAN_STR) + 1);
384	if (strcmp((const char *)(data1 + 2), PIPE_LANMAN_STR) == 0) {
385	    print_ipc(ndo, param, paramlen, data, datalen);
386	    return;
387	}
388#undef PIPE_LANMAN_STR
389
390	if (paramlen)
391	    smb_fdata(ndo, param, f3, min(param + paramlen, maxbuf), unicodestr);
392	if (datalen)
393	    smb_fdata(ndo, data, f4, min(data + datalen, maxbuf), unicodestr);
394    }
395    return;
396trunc:
397    ND_PRINT((ndo, "%s", tstr));
398}
399
400
401static void
402print_negprot(netdissect_options *ndo,
403              const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
404{
405    u_int wct, bcc;
406    const char *f1 = NULL, *f2 = NULL;
407
408    ND_TCHECK(words[0]);
409    wct = words[0];
410    if (request)
411	f2 = "*|Dialect=[Y]\n";
412    else {
413	if (wct == 1)
414	    f1 = "Core Protocol\nDialectIndex=[d]";
415	else if (wct == 17)
416	    f1 = "NT1 Protocol\nDialectIndex=[d]\nSecMode=[B]\nMaxMux=[d]\nNumVcs=[d]\nMaxBuffer=[D]\nRawSize=[D]\nSessionKey=[W]\nCapabilities=[W]\nServerTime=[T3]TimeZone=[d]\nCryptKey=";
417	else if (wct == 13)
418	    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=";
419    }
420
421    if (f1)
422	smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
423	    unicodestr);
424    else
425	smb_print_data(ndo, words + 1, min(wct * 2, PTR_DIFF(maxbuf, words + 1)));
426
427    ND_TCHECK2(*data, 2);
428    bcc = EXTRACT_LE_16BITS(data);
429    ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
430    if (bcc > 0) {
431	if (f2)
432	    smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_16BITS(data),
433		maxbuf), unicodestr);
434	else
435	    smb_print_data(ndo, data + 2, min(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
436    }
437    return;
438trunc:
439    ND_PRINT((ndo, "%s", tstr));
440}
441
442static void
443print_sesssetup(netdissect_options *ndo,
444                const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
445{
446    u_int wct, bcc;
447    const char *f1 = NULL, *f2 = NULL;
448
449    ND_TCHECK(words[0]);
450    wct = words[0];
451    if (request) {
452	if (wct == 10)
453	    f1 = "Com2=[w]\nOff2=[d]\nBufSize=[d]\nMpxMax=[d]\nVcNum=[d]\nSessionKey=[W]\nPassLen=[d]\nCryptLen=[d]\nCryptOff=[d]\nPass&Name=\n";
454	else
455	    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";
456    } else {
457	if (wct == 3) {
458	    f1 = "Com2=[w]\nOff2=[d]\nAction=[w]\n";
459	} else if (wct == 13) {
460	    f1 = "Com2=[B]\nRes=[B]\nOff2=[d]\nAction=[w]\n";
461	    f2 = "NativeOS=[S]\nNativeLanMan=[S]\nPrimaryDomain=[S]\n";
462	}
463    }
464
465    if (f1)
466	smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
467	    unicodestr);
468    else
469	smb_print_data(ndo, words + 1, min(wct * 2, PTR_DIFF(maxbuf, words + 1)));
470
471    ND_TCHECK2(*data, 2);
472    bcc = EXTRACT_LE_16BITS(data);
473    ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
474    if (bcc > 0) {
475	if (f2)
476	    smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_16BITS(data),
477		maxbuf), unicodestr);
478	else
479	    smb_print_data(ndo, data + 2, min(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
480    }
481    return;
482trunc:
483    ND_PRINT((ndo, "%s", tstr));
484}
485
486static void
487print_lockingandx(netdissect_options *ndo,
488                  const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
489{
490    u_int wct, bcc;
491    const u_char *maxwords;
492    const char *f1 = NULL, *f2 = NULL;
493
494    ND_TCHECK(words[0]);
495    wct = words[0];
496    if (request) {
497	f1 = "Com2=[w]\nOff2=[d]\nHandle=[d]\nLockType=[w]\nTimeOut=[D]\nUnlockCount=[d]\nLockCount=[d]\n";
498	ND_TCHECK(words[7]);
499	if (words[7] & 0x10)
500	    f2 = "*Process=[d]\n[P2]Offset=[M]\nLength=[M]\n";
501	else
502	    f2 = "*Process=[d]\nOffset=[D]\nLength=[D]\n";
503    } else {
504	f1 = "Com2=[w]\nOff2=[d]\n";
505    }
506
507    maxwords = min(words + 1 + wct * 2, maxbuf);
508    if (wct)
509	smb_fdata(ndo, words + 1, f1, maxwords, unicodestr);
510
511    ND_TCHECK2(*data, 2);
512    bcc = EXTRACT_LE_16BITS(data);
513    ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
514    if (bcc > 0) {
515	if (f2)
516	    smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_16BITS(data),
517		maxbuf), unicodestr);
518	else
519	    smb_print_data(ndo, data + 2, min(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
520    }
521    return;
522trunc:
523    ND_PRINT((ndo, "%s", tstr));
524}
525
526
527static const struct smbfns smb_fns[] = {
528    { -1, "SMBunknown", 0, DEFDESCRIPT },
529
530    { SMBtcon, "SMBtcon", 0,
531	{ NULL, "Path=[Z]\nPassword=[Z]\nDevice=[Z]\n",
532	  "MaxXmit=[d]\nTreeId=[d]\n", NULL,
533	  NULL } },
534
535    { SMBtdis, "SMBtdis", 0, DEFDESCRIPT },
536    { SMBexit,  "SMBexit", 0, DEFDESCRIPT },
537    { SMBioctl, "SMBioctl", 0, DEFDESCRIPT },
538
539    { SMBecho, "SMBecho", 0,
540	{ "ReverbCount=[d]\n", NULL,
541	  "SequenceNum=[d]\n", NULL,
542	  NULL } },
543
544    { SMBulogoffX, "SMBulogoffX", FLG_CHAIN, DEFDESCRIPT },
545
546    { SMBgetatr, "SMBgetatr", 0,
547	{ NULL, "Path=[Z]\n",
548	  "Attribute=[A]\nTime=[T2]Size=[D]\nRes=([w,w,w,w,w])\n", NULL,
549	  NULL } },
550
551    { SMBsetatr, "SMBsetatr", 0,
552	{ "Attribute=[A]\nTime=[T2]Res=([w,w,w,w,w])\n", "Path=[Z]\n",
553	  NULL, NULL, NULL } },
554
555    { SMBchkpth, "SMBchkpth", 0,
556       { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
557
558    { SMBsearch, "SMBsearch", 0,
559	{ "Count=[d]\nAttrib=[A]\n",
560	  "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\nRes2=[W]\n",
561	  "Count=[d]\n",
562	  "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",
563	  NULL } },
564
565    { SMBopen, "SMBopen", 0,
566	{ "Mode=[w]\nAttribute=[A]\n", "Path=[Z]\n",
567	  "Handle=[d]\nOAttrib=[A]\nTime=[T2]Size=[D]\nAccess=[w]\n",
568	  NULL, NULL } },
569
570    { SMBcreate, "SMBcreate", 0,
571	{ "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[d]\n", NULL, NULL } },
572
573    { SMBmknew, "SMBmknew", 0,
574	{ "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[d]\n", NULL, NULL } },
575
576    { SMBunlink, "SMBunlink", 0,
577	{ "Attrib=[A]\n", "Path=[Z]\n", NULL, NULL, NULL } },
578
579    { SMBread, "SMBread", 0,
580	{ "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
581	  "Count=[d]\nRes=([w,w,w,w])\n", NULL, NULL } },
582
583    { SMBwrite, "SMBwrite", 0,
584	{ "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
585	  "Count=[d]\n", NULL, NULL } },
586
587    { SMBclose, "SMBclose", 0,
588	{ "Handle=[d]\nTime=[T2]", NULL, NULL, NULL, NULL } },
589
590    { SMBmkdir, "SMBmkdir", 0,
591	{ NULL, "Path=[Z]\n", NULL, NULL, NULL } },
592
593    { SMBrmdir, "SMBrmdir", 0,
594	{ NULL, "Path=[Z]\n", NULL, NULL, NULL } },
595
596    { SMBdskattr, "SMBdskattr", 0,
597	{ NULL, NULL,
598	  "TotalUnits=[d]\nBlocksPerUnit=[d]\nBlockSize=[d]\nFreeUnits=[d]\nMedia=[w]\n",
599	  NULL, NULL } },
600
601    { SMBmv, "SMBmv", 0,
602	{ "Attrib=[A]\n", "OldPath=[Z]\nNewPath=[Z]\n", NULL, NULL, NULL } },
603
604    /*
605     * this is a Pathworks specific call, allowing the
606     * changing of the root path
607     */
608    { pSETDIR, "SMBsetdir", 0, { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
609
610    { SMBlseek, "SMBlseek", 0,
611	{ "Handle=[d]\nMode=[w]\nOffset=[D]\n", "Offset=[D]\n", NULL, NULL, NULL } },
612
613    { SMBflush, "SMBflush", 0, { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
614
615    { SMBsplopen, "SMBsplopen", 0,
616	{ "SetupLen=[d]\nMode=[w]\n", "Ident=[Z]\n", "Handle=[d]\n",
617	  NULL, NULL } },
618
619    { SMBsplclose, "SMBsplclose", 0,
620	{ "Handle=[d]\n", NULL, NULL, NULL, NULL } },
621
622    { SMBsplretq, "SMBsplretq", 0,
623	{ "MaxCount=[d]\nStartIndex=[d]\n", NULL,
624	  "Count=[d]\nIndex=[d]\n",
625	  "*Time=[T2]Status=[B]\nJobID=[d]\nSize=[D]\nRes=[B]Name=[s16]\n",
626	  NULL } },
627
628    { SMBsplwr, "SMBsplwr", 0,
629	{ "Handle=[d]\n", NULL, NULL, NULL, NULL } },
630
631    { SMBlock, "SMBlock", 0,
632	{ "Handle=[d]\nCount=[D]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
633
634    { SMBunlock, "SMBunlock", 0,
635	{ "Handle=[d]\nCount=[D]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
636
637    /* CORE+ PROTOCOL FOLLOWS */
638
639    { SMBreadbraw, "SMBreadbraw", 0,
640	{ "Handle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nRes=[d]\n",
641	  NULL, NULL, NULL, NULL } },
642
643    { SMBwritebraw, "SMBwritebraw", 0,
644	{ "Handle=[d]\nTotalCount=[d]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\n|DataSize=[d]\nDataOff=[d]\n",
645	  NULL, "WriteRawAck", NULL, NULL } },
646
647    { SMBwritec, "SMBwritec", 0,
648	{ NULL, NULL, "Count=[d]\n", NULL, NULL } },
649
650    { SMBwriteclose, "SMBwriteclose", 0,
651	{ "Handle=[d]\nCount=[d]\nOffset=[D]\nTime=[T2]Res=([w,w,w,w,w,w])",
652	  NULL, "Count=[d]\n", NULL, NULL } },
653
654    { SMBlockread, "SMBlockread", 0,
655	{ "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
656	  "Count=[d]\nRes=([w,w,w,w])\n", NULL, NULL } },
657
658    { SMBwriteunlock, "SMBwriteunlock", 0,
659	{ "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
660	  "Count=[d]\n", NULL, NULL } },
661
662    { SMBreadBmpx, "SMBreadBmpx", 0,
663	{ "Handle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nRes=[w]\n",
664	  NULL,
665	  "Offset=[D]\nTotCount=[d]\nRemaining=[d]\nRes=([w,w])\nDataSize=[d]\nDataOff=[d]\n",
666	  NULL, NULL } },
667
668    { SMBwriteBmpx, "SMBwriteBmpx", 0,
669	{ "Handle=[d]\nTotCount=[d]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\nDataSize=[d]\nDataOff=[d]\n", NULL,
670	  "Remaining=[d]\n", NULL, NULL } },
671
672    { SMBwriteBs, "SMBwriteBs", 0,
673	{ "Handle=[d]\nTotCount=[d]\nOffset=[D]\nRes=[W]\nDataSize=[d]\nDataOff=[d]\n",
674	  NULL, "Count=[d]\n", NULL, NULL } },
675
676    { SMBsetattrE, "SMBsetattrE", 0,
677	{ "Handle=[d]\nCreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]", NULL,
678	  NULL, NULL, NULL } },
679
680    { SMBgetattrE, "SMBgetattrE", 0,
681	{ "Handle=[d]\n", NULL,
682	  "CreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]Size=[D]\nAllocSize=[D]\nAttribute=[A]\n",
683	  NULL, NULL } },
684
685    { SMBtranss, "SMBtranss", 0, DEFDESCRIPT },
686    { SMBioctls, "SMBioctls", 0, DEFDESCRIPT },
687
688    { SMBcopy, "SMBcopy", 0,
689	{ "TreeID2=[d]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
690	  "CopyCount=[d]\n",  "|ErrStr=[S]\n",  NULL } },
691
692    { SMBmove, "SMBmove", 0,
693	{ "TreeID2=[d]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
694	  "MoveCount=[d]\n",  "|ErrStr=[S]\n",  NULL } },
695
696    { SMBopenX, "SMBopenX", FLG_CHAIN,
697	{ "Com2=[w]\nOff2=[d]\nFlags=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]OFun=[w]\nSize=[D]\nTimeOut=[D]\nRes=[W]\n",
698	  "Path=[S]\n",
699	  "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",
700	  NULL, NULL } },
701
702    { SMBreadX, "SMBreadX", FLG_CHAIN,
703	{ "Com2=[w]\nOff2=[d]\nHandle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nCountLeft=[d]\n",
704	  NULL,
705	  "Com2=[w]\nOff2=[d]\nRemaining=[d]\nRes=[W]\nDataSize=[d]\nDataOff=[d]\nRes=([w,w,w,w])\n",
706	  NULL, NULL } },
707
708    { SMBwriteX, "SMBwriteX", FLG_CHAIN,
709	{ "Com2=[w]\nOff2=[d]\nHandle=[d]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nCountLeft=[d]\nRes=[w]\nDataSize=[d]\nDataOff=[d]\n",
710	  NULL,
711	  "Com2=[w]\nOff2=[d]\nCount=[d]\nRemaining=[d]\nRes=[W]\n",
712	  NULL, NULL } },
713
714    { SMBffirst, "SMBffirst", 0,
715	{ "Count=[d]\nAttrib=[A]\n",
716	  "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
717	  "Count=[d]\n",
718	  "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",
719	  NULL } },
720
721    { SMBfunique, "SMBfunique", 0,
722	{ "Count=[d]\nAttrib=[A]\n",
723	  "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
724	  "Count=[d]\n",
725	  "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",
726	  NULL } },
727
728    { SMBfclose, "SMBfclose", 0,
729	{ "Count=[d]\nAttrib=[A]\n",
730	  "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
731	  "Count=[d]\n",
732	  "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",
733	  NULL } },
734
735    { SMBfindnclose, "SMBfindnclose", 0,
736	{ "Handle=[d]\n", NULL, NULL, NULL, NULL } },
737
738    { SMBfindclose, "SMBfindclose", 0,
739	{ "Handle=[d]\n", NULL, NULL, NULL, NULL } },
740
741    { SMBsends, "SMBsends", 0,
742	{ NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
743
744    { SMBsendstrt, "SMBsendstrt", 0,
745	{ NULL, "Source=[Z]\nDest=[Z]\n", "GroupID=[d]\n", NULL, NULL } },
746
747    { SMBsendend, "SMBsendend", 0,
748	{ "GroupID=[d]\n", NULL, NULL, NULL, NULL } },
749
750    { SMBsendtxt, "SMBsendtxt", 0,
751	{ "GroupID=[d]\n", NULL, NULL, NULL, NULL } },
752
753    { SMBsendb, "SMBsendb", 0,
754	{ NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
755
756    { SMBfwdname, "SMBfwdname", 0, DEFDESCRIPT },
757    { SMBcancelf, "SMBcancelf", 0, DEFDESCRIPT },
758    { SMBgetmac, "SMBgetmac", 0, DEFDESCRIPT },
759
760    { SMBnegprot, "SMBnegprot", 0,
761	{ NULL, NULL, NULL, NULL, print_negprot } },
762
763    { SMBsesssetupX, "SMBsesssetupX", FLG_CHAIN,
764	{ NULL, NULL, NULL, NULL, print_sesssetup } },
765
766    { SMBtconX, "SMBtconX", FLG_CHAIN,
767	{ "Com2=[w]\nOff2=[d]\nFlags=[w]\nPassLen=[d]\nPasswd&Path&Device=\n",
768	  NULL, "Com2=[w]\nOff2=[d]\n", "ServiceType=[R]\n", NULL } },
769
770    { SMBlockingX, "SMBlockingX", FLG_CHAIN,
771	{ NULL, NULL, NULL, NULL, print_lockingandx } },
772
773    { SMBtrans2, "SMBtrans2", 0, { NULL, NULL, NULL, NULL, print_trans2 } },
774
775    { SMBtranss2, "SMBtranss2", 0, DEFDESCRIPT },
776    { SMBctemp, "SMBctemp", 0, DEFDESCRIPT },
777    { SMBreadBs, "SMBreadBs", 0, DEFDESCRIPT },
778    { SMBtrans, "SMBtrans", 0, { NULL, NULL, NULL, NULL, print_trans } },
779
780    { SMBnttrans, "SMBnttrans", 0, DEFDESCRIPT },
781    { SMBnttranss, "SMBnttranss", 0, DEFDESCRIPT },
782
783    { SMBntcreateX, "SMBntcreateX", FLG_CHAIN,
784	{ "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",
785	  "Path=[C]\n",
786	  "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",
787	  NULL, NULL } },
788
789    { SMBntcancel, "SMBntcancel", 0, DEFDESCRIPT },
790
791    { -1, NULL, 0, DEFDESCRIPT }
792};
793
794
795/*
796 * print a SMB message
797 */
798static void
799print_smb(netdissect_options *ndo,
800          const u_char *buf, const u_char *maxbuf)
801{
802    uint16_t flags2;
803    int nterrcodes;
804    int command;
805    uint32_t nterror;
806    const u_char *words, *maxwords, *data;
807    const struct smbfns *fn;
808    const char *fmt_smbheader =
809        "[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";
810    int smboffset;
811
812    ND_TCHECK(buf[9]);
813    request = (buf[9] & 0x80) ? 0 : 1;
814    startbuf = buf;
815
816    command = buf[4];
817
818    fn = smbfind(command, smb_fns);
819
820    if (ndo->ndo_vflag > 1)
821	ND_PRINT((ndo, "\n"));
822
823    ND_PRINT((ndo, "SMB PACKET: %s (%s)\n", fn->name, request ? "REQUEST" : "REPLY"));
824
825    if (ndo->ndo_vflag < 2)
826	return;
827
828    ND_TCHECK_16BITS(&buf[10]);
829    flags2 = EXTRACT_LE_16BITS(&buf[10]);
830    unicodestr = flags2 & 0x8000;
831    nterrcodes = flags2 & 0x4000;
832
833    /* print out the header */
834    smb_fdata(ndo, buf, fmt_smbheader, buf + 33, unicodestr);
835
836    if (nterrcodes) {
837    	nterror = EXTRACT_LE_32BITS(&buf[5]);
838	if (nterror)
839	    ND_PRINT((ndo, "NTError = %s\n", nt_errstr(nterror)));
840    } else {
841	if (buf[5])
842	    ND_PRINT((ndo, "SMBError = %s\n", smb_errstr(buf[5], EXTRACT_LE_16BITS(&buf[7]))));
843    }
844
845    smboffset = 32;
846
847    for (;;) {
848	const char *f1, *f2;
849	int wct;
850	u_int bcc;
851	int newsmboffset;
852
853	words = buf + smboffset;
854	ND_TCHECK(words[0]);
855	wct = words[0];
856	data = words + 1 + wct * 2;
857	maxwords = min(data, maxbuf);
858
859	if (request) {
860	    f1 = fn->descript.req_f1;
861	    f2 = fn->descript.req_f2;
862	} else {
863	    f1 = fn->descript.rep_f1;
864	    f2 = fn->descript.rep_f2;
865	}
866
867	if (fn->descript.fn)
868	    (*fn->descript.fn)(ndo, words, data, buf, maxbuf);
869	else {
870	    if (wct) {
871		if (f1)
872		    smb_fdata(ndo, words + 1, f1, words + 1 + wct * 2, unicodestr);
873		else {
874		    int i;
875		    int v;
876
877		    for (i = 0; &words[1 + 2 * i] < maxwords; i++) {
878			ND_TCHECK2(words[1 + 2 * i], 2);
879			v = EXTRACT_LE_16BITS(words + 1 + 2 * i);
880			ND_PRINT((ndo, "smb_vwv[%d]=%d (0x%X)\n", i, v, v));
881		    }
882		}
883	    }
884
885	    ND_TCHECK2(*data, 2);
886	    bcc = EXTRACT_LE_16BITS(data);
887	    ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
888	    if (f2) {
889		if (bcc > 0)
890		    smb_fdata(ndo, data + 2, f2, data + 2 + bcc, unicodestr);
891	    } else {
892		if (bcc > 0) {
893		    ND_PRINT((ndo, "smb_buf[]=\n"));
894		    smb_print_data(ndo, data + 2, min(bcc, PTR_DIFF(maxbuf, data + 2)));
895		}
896	    }
897	}
898
899	if ((fn->flags & FLG_CHAIN) == 0)
900	    break;
901	if (wct == 0)
902	    break;
903	ND_TCHECK(words[1]);
904	command = words[1];
905	if (command == 0xFF)
906	    break;
907	ND_TCHECK2(words[3], 2);
908	newsmboffset = EXTRACT_LE_16BITS(words + 3);
909
910	fn = smbfind(command, smb_fns);
911
912	ND_PRINT((ndo, "\nSMB PACKET: %s (%s) (CHAINED)\n",
913	    fn->name, request ? "REQUEST" : "REPLY"));
914	if (newsmboffset <= smboffset) {
915	    ND_PRINT((ndo, "Bad andX offset: %u <= %u\n", newsmboffset, smboffset));
916	    break;
917	}
918	smboffset = newsmboffset;
919    }
920
921    ND_PRINT((ndo, "\n"));
922    return;
923trunc:
924    ND_PRINT((ndo, "%s", tstr));
925}
926
927
928/*
929 * print a NBT packet received across tcp on port 139
930 */
931void
932nbt_tcp_print(netdissect_options *ndo,
933              const u_char *data, int length)
934{
935    int caplen;
936    int type;
937    u_int nbt_len;
938    const u_char *maxbuf;
939
940    if (length < 4)
941	goto trunc;
942    if (ndo->ndo_snapend < data)
943	goto trunc;
944    caplen = ndo->ndo_snapend - data;
945    if (caplen < 4)
946	goto trunc;
947    maxbuf = data + caplen;
948    ND_TCHECK_8BITS(data);
949    type = data[0];
950    ND_TCHECK_16BITS(data + 2);
951    nbt_len = EXTRACT_16BITS(data + 2);
952    length -= 4;
953    caplen -= 4;
954
955    startbuf = data;
956
957    if (ndo->ndo_vflag < 2) {
958	ND_PRINT((ndo, " NBT Session Packet: "));
959	switch (type) {
960	case 0x00:
961	    ND_PRINT((ndo, "Session Message"));
962	    break;
963
964	case 0x81:
965	    ND_PRINT((ndo, "Session Request"));
966	    break;
967
968	case 0x82:
969	    ND_PRINT((ndo, "Session Granted"));
970	    break;
971
972	case 0x83:
973	  {
974	    int ecode;
975
976	    if (nbt_len < 4)
977		goto trunc;
978	    if (length < 4)
979		goto trunc;
980	    if (caplen < 4)
981		goto trunc;
982	    ecode = data[4];
983
984	    ND_PRINT((ndo, "Session Reject, "));
985	    switch (ecode) {
986	    case 0x80:
987		ND_PRINT((ndo, "Not listening on called name"));
988		break;
989	    case 0x81:
990		ND_PRINT((ndo, "Not listening for calling name"));
991		break;
992	    case 0x82:
993		ND_PRINT((ndo, "Called name not present"));
994		break;
995	    case 0x83:
996		ND_PRINT((ndo, "Called name present, but insufficient resources"));
997		break;
998	    default:
999		ND_PRINT((ndo, "Unspecified error 0x%X", ecode));
1000		break;
1001	    }
1002	  }
1003	    break;
1004
1005	case 0x85:
1006	    ND_PRINT((ndo, "Session Keepalive"));
1007	    break;
1008
1009	default:
1010	    data = smb_fdata(ndo, data, "Unknown packet type [rB]", maxbuf, 0);
1011	    break;
1012	}
1013    } else {
1014	ND_PRINT((ndo, "\n>>> NBT Session Packet\n"));
1015	switch (type) {
1016	case 0x00:
1017	    data = smb_fdata(ndo, data, "[P1]NBT Session Message\nFlags=[B]\nLength=[rd]\n",
1018		data + 4, 0);
1019	    if (data == NULL)
1020		break;
1021	    if (nbt_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1022		if ((int)nbt_len > caplen) {
1023		    if ((int)nbt_len > length)
1024			ND_PRINT((ndo, "WARNING: Packet is continued in later TCP segments\n"));
1025		    else
1026			ND_PRINT((ndo, "WARNING: Short packet. Try increasing the snap length by %d\n",
1027			    nbt_len - caplen));
1028		}
1029		print_smb(ndo, data, maxbuf > data + nbt_len ? data + nbt_len : maxbuf);
1030	    } else
1031		ND_PRINT((ndo, "Session packet:(raw data or continuation?)\n"));
1032	    break;
1033
1034	case 0x81:
1035	    data = smb_fdata(ndo, data,
1036		"[P1]NBT Session Request\nFlags=[B]\nLength=[rd]\nDestination=[n1]\nSource=[n1]\n",
1037		maxbuf, 0);
1038	    break;
1039
1040	case 0x82:
1041	    data = smb_fdata(ndo, data, "[P1]NBT Session Granted\nFlags=[B]\nLength=[rd]\n", maxbuf, 0);
1042	    break;
1043
1044	case 0x83:
1045	  {
1046	    const u_char *origdata;
1047	    int ecode;
1048
1049	    origdata = data;
1050	    data = smb_fdata(ndo, data, "[P1]NBT SessionReject\nFlags=[B]\nLength=[rd]\nReason=[B]\n",
1051		maxbuf, 0);
1052	    if (data == NULL)
1053		break;
1054	    if (nbt_len >= 1 && caplen >= 1) {
1055		ecode = origdata[4];
1056		switch (ecode) {
1057		case 0x80:
1058		    ND_PRINT((ndo, "Not listening on called name\n"));
1059		    break;
1060		case 0x81:
1061		    ND_PRINT((ndo, "Not listening for calling name\n"));
1062		    break;
1063		case 0x82:
1064		    ND_PRINT((ndo, "Called name not present\n"));
1065		    break;
1066		case 0x83:
1067		    ND_PRINT((ndo, "Called name present, but insufficient resources\n"));
1068		    break;
1069		default:
1070		    ND_PRINT((ndo, "Unspecified error 0x%X\n", ecode));
1071		    break;
1072		}
1073	    }
1074	  }
1075	    break;
1076
1077	case 0x85:
1078	    data = smb_fdata(ndo, data, "[P1]NBT Session Keepalive\nFlags=[B]\nLength=[rd]\n", maxbuf, 0);
1079	    break;
1080
1081	default:
1082	    data = smb_fdata(ndo, data, "NBT - Unknown packet type\nType=[B]\n", maxbuf, 0);
1083	    break;
1084	}
1085	ND_PRINT((ndo, "\n"));
1086    }
1087    return;
1088trunc:
1089    ND_PRINT((ndo, "%s", tstr));
1090}
1091
1092static const struct tok opcode_str[] = {
1093	{ 0,  "QUERY"                   },
1094	{ 5,  "REGISTRATION"            },
1095	{ 6,  "RELEASE"                 },
1096	{ 7,  "WACK"                    },
1097	{ 8,  "REFRESH(8)"              },
1098	{ 9,  "REFRESH"                 },
1099	{ 15, "MULTIHOMED REGISTRATION" },
1100	{ 0, NULL }
1101};
1102
1103/*
1104 * print a NBT packet received across udp on port 137
1105 */
1106void
1107nbt_udp137_print(netdissect_options *ndo,
1108                 const u_char *data, int length)
1109{
1110    const u_char *maxbuf = data + length;
1111    int name_trn_id, response, opcode, nm_flags, rcode;
1112    int qdcount, ancount, nscount, arcount;
1113    const u_char *p;
1114    int total, i;
1115
1116    ND_TCHECK2(data[10], 2);
1117    name_trn_id = EXTRACT_16BITS(data);
1118    response = (data[2] >> 7);
1119    opcode = (data[2] >> 3) & 0xF;
1120    nm_flags = ((data[2] & 0x7) << 4) + (data[3] >> 4);
1121    rcode = data[3] & 0xF;
1122    qdcount = EXTRACT_16BITS(data + 4);
1123    ancount = EXTRACT_16BITS(data + 6);
1124    nscount = EXTRACT_16BITS(data + 8);
1125    arcount = EXTRACT_16BITS(data + 10);
1126    startbuf = data;
1127
1128    if (maxbuf <= data)
1129	return;
1130
1131    if (ndo->ndo_vflag > 1)
1132	ND_PRINT((ndo, "\n>>> "));
1133
1134    ND_PRINT((ndo, "NBT UDP PACKET(137): %s", tok2str(opcode_str, "OPUNKNOWN", opcode)));
1135    if (response) {
1136        ND_PRINT((ndo, "; %s", rcode ? "NEGATIVE" : "POSITIVE"));
1137    }
1138    ND_PRINT((ndo, "; %s; %s", response ? "RESPONSE" : "REQUEST",
1139              (nm_flags & 1) ? "BROADCAST" : "UNICAST"));
1140
1141    if (ndo->ndo_vflag < 2)
1142	return;
1143
1144    ND_PRINT((ndo, "\nTrnID=0x%X\nOpCode=%d\nNmFlags=0x%X\nRcode=%d\nQueryCount=%d\nAnswerCount=%d\nAuthorityCount=%d\nAddressRecCount=%d\n",
1145	name_trn_id, opcode, nm_flags, rcode, qdcount, ancount, nscount,
1146	arcount));
1147
1148    p = data + 12;
1149
1150    total = ancount + nscount + arcount;
1151
1152    if (qdcount > 100 || total > 100) {
1153	ND_PRINT((ndo, "Corrupt packet??\n"));
1154	return;
1155    }
1156
1157    if (qdcount) {
1158	ND_PRINT((ndo, "QuestionRecords:\n"));
1159	for (i = 0; i < qdcount; i++) {
1160	    p = smb_fdata(ndo, p,
1161		"|Name=[n1]\nQuestionType=[rw]\nQuestionClass=[rw]\n#",
1162		maxbuf, 0);
1163	    if (p == NULL)
1164		goto out;
1165	}
1166    }
1167
1168    if (total) {
1169	ND_PRINT((ndo, "\nResourceRecords:\n"));
1170	for (i = 0; i < total; i++) {
1171	    int rdlen;
1172	    int restype;
1173
1174	    p = smb_fdata(ndo, p, "Name=[n1]\n#", maxbuf, 0);
1175	    if (p == NULL)
1176		goto out;
1177	    ND_TCHECK_16BITS(p);
1178	    restype = EXTRACT_16BITS(p);
1179	    p = smb_fdata(ndo, p, "ResType=[rw]\nResClass=[rw]\nTTL=[rD]\n", p + 8, 0);
1180	    if (p == NULL)
1181		goto out;
1182	    ND_TCHECK_16BITS(p);
1183	    rdlen = EXTRACT_16BITS(p);
1184	    ND_PRINT((ndo, "ResourceLength=%d\nResourceData=\n", rdlen));
1185	    p += 2;
1186	    if (rdlen == 6) {
1187		p = smb_fdata(ndo, p, "AddrType=[rw]\nAddress=[b.b.b.b]\n", p + rdlen, 0);
1188		if (p == NULL)
1189		    goto out;
1190	    } else {
1191		if (restype == 0x21) {
1192		    int numnames;
1193
1194		    ND_TCHECK(*p);
1195		    numnames = p[0];
1196		    p = smb_fdata(ndo, p, "NumNames=[B]\n", p + 1, 0);
1197		    if (p == NULL)
1198			goto out;
1199		    while (numnames--) {
1200			p = smb_fdata(ndo, p, "Name=[n2]\t#", maxbuf, 0);
1201			if (p == NULL)
1202			    goto out;
1203			ND_TCHECK(*p);
1204			if (p[0] & 0x80)
1205			    ND_PRINT((ndo, "<GROUP> "));
1206			switch (p[0] & 0x60) {
1207			case 0x00: ND_PRINT((ndo, "B ")); break;
1208			case 0x20: ND_PRINT((ndo, "P ")); break;
1209			case 0x40: ND_PRINT((ndo, "M ")); break;
1210			case 0x60: ND_PRINT((ndo, "_ ")); break;
1211			}
1212			if (p[0] & 0x10)
1213			    ND_PRINT((ndo, "<DEREGISTERING> "));
1214			if (p[0] & 0x08)
1215			    ND_PRINT((ndo, "<CONFLICT> "));
1216			if (p[0] & 0x04)
1217			    ND_PRINT((ndo, "<ACTIVE> "));
1218			if (p[0] & 0x02)
1219			    ND_PRINT((ndo, "<PERMANENT> "));
1220			ND_PRINT((ndo, "\n"));
1221			p += 2;
1222		    }
1223		} else {
1224		    smb_print_data(ndo, p, min(rdlen, length - (p - data)));
1225		    p += rdlen;
1226		}
1227	    }
1228	}
1229    }
1230
1231    if (p < maxbuf)
1232	smb_fdata(ndo, p, "AdditionalData:\n", maxbuf, 0);
1233
1234out:
1235    ND_PRINT((ndo, "\n"));
1236    return;
1237trunc:
1238    ND_PRINT((ndo, "%s", tstr));
1239}
1240
1241/*
1242 * Print an SMB-over-TCP packet received across tcp on port 445
1243 */
1244void
1245smb_tcp_print(netdissect_options *ndo,
1246              const u_char * data, int length)
1247{
1248    int caplen;
1249    u_int smb_len;
1250    const u_char *maxbuf;
1251
1252    if (length < 4)
1253	goto trunc;
1254    if (ndo->ndo_snapend < data)
1255	goto trunc;
1256    caplen = ndo->ndo_snapend - data;
1257    if (caplen < 4)
1258	goto trunc;
1259    maxbuf = data + caplen;
1260    smb_len = EXTRACT_24BITS(data + 1);
1261    length -= 4;
1262    caplen -= 4;
1263
1264    startbuf = data;
1265    data += 4;
1266
1267    if (smb_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1268	if ((int)smb_len > caplen) {
1269	    if ((int)smb_len > length)
1270		ND_PRINT((ndo, " WARNING: Packet is continued in later TCP segments\n"));
1271	    else
1272		ND_PRINT((ndo, " WARNING: Short packet. Try increasing the snap length by %d\n",
1273		    smb_len - caplen));
1274	} else
1275	    ND_PRINT((ndo, " "));
1276	print_smb(ndo, data, maxbuf > data + smb_len ? data + smb_len : maxbuf);
1277    } else
1278	ND_PRINT((ndo, " SMB-over-TCP packet:(raw data or continuation?)\n"));
1279    return;
1280trunc:
1281    ND_PRINT((ndo, "%s", tstr));
1282}
1283
1284/*
1285 * print a NBT packet received across udp on port 138
1286 */
1287void
1288nbt_udp138_print(netdissect_options *ndo,
1289                 const u_char *data, int length)
1290{
1291    const u_char *maxbuf = data + length;
1292
1293    if (maxbuf > ndo->ndo_snapend)
1294	maxbuf = ndo->ndo_snapend;
1295    if (maxbuf <= data)
1296	return;
1297    startbuf = data;
1298
1299    if (ndo->ndo_vflag < 2) {
1300	ND_PRINT((ndo, "NBT UDP PACKET(138)"));
1301	return;
1302    }
1303
1304    data = smb_fdata(ndo, data,
1305	"\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#",
1306	maxbuf, 0);
1307
1308    if (data != NULL) {
1309	/* If there isn't enough data for "\377SMB", don't check for it. */
1310	if (&data[3] >= maxbuf)
1311	    goto out;
1312
1313	if (memcmp(data, "\377SMB",4) == 0)
1314	    print_smb(ndo, data, maxbuf);
1315    }
1316out:
1317    ND_PRINT((ndo, "\n"));
1318}
1319
1320
1321/*
1322   print netbeui frames
1323*/
1324static struct nbf_strings {
1325	const char	*name;
1326	const char	*nonverbose;
1327	const char	*verbose;
1328} nbf_strings[0x20] = {
1329	{ "Add Group Name Query", ", [P23]Name to add=[n2]#",
1330	  "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1331	{ "Add Name Query", ", [P23]Name to add=[n2]#",
1332	  "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1333	{ "Name In Conflict", NULL, NULL },
1334	{ "Status Query", NULL, NULL },
1335	{ NULL, NULL, NULL },	/* not used */
1336	{ NULL, NULL, NULL },	/* not used */
1337	{ NULL, NULL, NULL },	/* not used */
1338	{ "Terminate Trace", NULL, NULL },
1339	{ "Datagram", NULL,
1340	  "[P7]Destination=[n2]\nSource=[n2]\n" },
1341	{ "Broadcast Datagram", NULL,
1342	  "[P7]Destination=[n2]\nSource=[n2]\n" },
1343	{ "Name Query", ", [P7]Name=[n2]#",
1344	  "[P1]SessionNumber=[B]\nNameType=[B][P2]\nResponseCorrelator=[w]\nName=[n2]\nName of sender=[n2]\n" },
1345	{ NULL, NULL, NULL },	/* not used */
1346	{ NULL, NULL, NULL },	/* not used */
1347	{ "Add Name Response", ", [P1]GroupName=[w] [P4]Destination=[n2] Source=[n2]#",
1348	  "AddNameInProcess=[B]\nGroupName=[w]\nTransmitCorrelator=[w][P2]\nDestination=[n2]\nSource=[n2]\n" },
1349	{ "Name Recognized", NULL,
1350	  "[P1]Data2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nDestination=[n2]\nSource=[n2]\n" },
1351	{ "Status Response", NULL, NULL },
1352	{ NULL, NULL, NULL },	/* not used */
1353	{ NULL, NULL, NULL },	/* not used */
1354	{ NULL, NULL, NULL },	/* not used */
1355	{ "Terminate Trace", NULL, NULL },
1356	{ "Data Ack", NULL,
1357	  "[P3]TransmitCorrelator=[w][P2]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1358	{ "Data First/Middle", NULL,
1359	  "Flags=[{RECEIVE_CONTINUE|NO_ACK||PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1360	{ "Data Only/Last", NULL,
1361	  "Flags=[{|NO_ACK|PIGGYBACK_ACK_ALLOWED|PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1362	{ "Session Confirm", NULL,
1363	  "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1364	{ "Session End", NULL,
1365	  "[P1]Data2=[w][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1366	{ "Session Initialize", NULL,
1367	  "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1368	{ "No Receive", NULL,
1369	  "Flags=[{|SEND_NO_ACK}]\nDataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1370	{ "Receive Outstanding", NULL,
1371	  "[P1]DataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1372	{ "Receive Continue", NULL,
1373	  "[P2]TransmitCorrelator=[w]\n[P2]RemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1374	{ NULL, NULL, NULL },	/* not used */
1375	{ NULL, NULL, NULL },	/* not used */
1376	{ "Session Alive", NULL, NULL }
1377};
1378
1379void
1380netbeui_print(netdissect_options *ndo,
1381              u_short control, const u_char *data, int length)
1382{
1383    const u_char *maxbuf = data + length;
1384    int len;
1385    int command;
1386    const u_char *data2;
1387    int is_truncated = 0;
1388
1389    if (maxbuf > ndo->ndo_snapend)
1390	maxbuf = ndo->ndo_snapend;
1391    ND_TCHECK(data[4]);
1392    len = EXTRACT_LE_16BITS(data);
1393    command = data[4];
1394    data2 = data + len;
1395    if (data2 >= maxbuf) {
1396	data2 = maxbuf;
1397	is_truncated = 1;
1398    }
1399
1400    startbuf = data;
1401
1402    if (ndo->ndo_vflag < 2) {
1403	ND_PRINT((ndo, "NBF Packet: "));
1404	data = smb_fdata(ndo, data, "[P5]#", maxbuf, 0);
1405    } else {
1406	ND_PRINT((ndo, "\n>>> NBF Packet\nType=0x%X ", control));
1407	data = smb_fdata(ndo, data, "Length=[d] Signature=[w] Command=[B]\n#", maxbuf, 0);
1408    }
1409    if (data == NULL)
1410	goto out;
1411
1412    if (command > 0x1f || nbf_strings[command].name == NULL) {
1413	if (ndo->ndo_vflag < 2)
1414	    data = smb_fdata(ndo, data, "Unknown NBF Command#", data2, 0);
1415	else
1416	    data = smb_fdata(ndo, data, "Unknown NBF Command\n", data2, 0);
1417    } else {
1418	if (ndo->ndo_vflag < 2) {
1419	    ND_PRINT((ndo, "%s", nbf_strings[command].name));
1420	    if (nbf_strings[command].nonverbose != NULL)
1421		data = smb_fdata(ndo, data, nbf_strings[command].nonverbose, data2, 0);
1422	} else {
1423	    ND_PRINT((ndo, "%s:\n", nbf_strings[command].name));
1424	    if (nbf_strings[command].verbose != NULL)
1425		data = smb_fdata(ndo, data, nbf_strings[command].verbose, data2, 0);
1426	    else
1427		ND_PRINT((ndo, "\n"));
1428	}
1429    }
1430
1431    if (ndo->ndo_vflag < 2)
1432	return;
1433
1434    if (data == NULL)
1435	goto out;
1436
1437    if (is_truncated) {
1438	/* data2 was past the end of the buffer */
1439	goto out;
1440    }
1441
1442    /* If this isn't a command that would contain an SMB message, quit. */
1443    if (command != 0x08 && command != 0x09 && command != 0x15 &&
1444        command != 0x16)
1445	goto out;
1446
1447    /* If there isn't enough data for "\377SMB", don't look for it. */
1448    if (&data2[3] >= maxbuf)
1449	goto out;
1450
1451    if (memcmp(data2, "\377SMB",4) == 0)
1452	print_smb(ndo, data2, maxbuf);
1453    else {
1454	int i;
1455	for (i = 0; i < 128; i++) {
1456	    if (&data2[i + 3] >= maxbuf)
1457		break;
1458	    if (memcmp(&data2[i], "\377SMB", 4) == 0) {
1459		ND_PRINT((ndo, "found SMB packet at %d\n", i));
1460		print_smb(ndo, &data2[i], maxbuf);
1461		break;
1462	    }
1463	}
1464    }
1465
1466out:
1467    ND_PRINT((ndo, "\n"));
1468    return;
1469trunc:
1470    ND_PRINT((ndo, "%s", tstr));
1471}
1472
1473
1474/*
1475 * print IPX-Netbios frames
1476 */
1477void
1478ipx_netbios_print(netdissect_options *ndo,
1479                  const u_char *data, u_int length)
1480{
1481    /*
1482     * this is a hack till I work out how to parse the rest of the
1483     * NetBIOS-over-IPX stuff
1484     */
1485    int i;
1486    const u_char *maxbuf;
1487
1488    maxbuf = data + length;
1489    /* Don't go past the end of the captured data in the packet. */
1490    if (maxbuf > ndo->ndo_snapend)
1491	maxbuf = ndo->ndo_snapend;
1492    startbuf = data;
1493    for (i = 0; i < 128; i++) {
1494	if (&data[i + 4] > maxbuf)
1495	    break;
1496	if (memcmp(&data[i], "\377SMB", 4) == 0) {
1497	    smb_fdata(ndo, data, "\n>>> IPX transport ", &data[i], 0);
1498	    print_smb(ndo, &data[i], maxbuf);
1499	    ND_PRINT((ndo, "\n"));
1500	    break;
1501	}
1502    }
1503    if (i == 128)
1504	smb_fdata(ndo, data, "\n>>> Unknown IPX ", maxbuf, 0);
1505}
1506