xref: /netbsd-src/external/bsd/tcpdump/dist/print-smb.c (revision cc576e1d8e4f4078fd4e81238abca9fca216f6ec) 
1 /*
2  * Copyright (C) Andrew Tridgell 1995-1999
3  *
4  * This software may be distributed either under the terms of the
5  * BSD-style license that accompanies tcpdump or the GNU GPL version 2
6  * or later
7  */
8 
9 #include <sys/cdefs.h>
10 #ifndef lint
11 __RCSID("$NetBSD: print-smb.c,v 1.6 2017/01/24 23:29:14 christos Exp $");
12 #endif
13 
14 #ifdef HAVE_CONFIG_H
15 #include "config.h"
16 #endif
17 
18 #include <netdissect-stdinc.h>
19 
20 #include <string.h>
21 
22 #include "netdissect.h"
23 #include "extract.h"
24 #include "smb.h"
25 
26 static const char tstr[] = "[|SMB]";
27 
28 static int request = 0;
29 static int unicodestr = 0;
30 
31 const u_char *startbuf = NULL;
32 
33 struct smbdescript {
34     const char *req_f1;
35     const char *req_f2;
36     const char *rep_f1;
37     const char *rep_f2;
38     void (*fn)(netdissect_options *, const u_char *, const u_char *, const u_char *, const u_char *);
39 };
40 
41 struct smbdescriptint {
42     const char *req_f1;
43     const char *req_f2;
44     const char *rep_f1;
45     const char *rep_f2;
46     void (*fn)(netdissect_options *, const u_char *, const u_char *, int, int);
47 };
48 
49 struct smbfns
50 {
51     int id;
52     const char *name;
53     int flags;
54     struct smbdescript descript;
55 };
56 
57 struct smbfnsint
58 {
59     int id;
60     const char *name;
61     int flags;
62     struct smbdescriptint descript;
63 };
64 
65 #define DEFDESCRIPT	{ NULL, NULL, NULL, NULL, NULL }
66 
67 #define FLG_CHAIN	(1 << 0)
68 
69 static const struct smbfns *
70 smbfind(int id, const struct smbfns *list)
71 {
72     int sindex;
73 
74     for (sindex = 0; list[sindex].name; sindex++)
75 	if (list[sindex].id == id)
76 	    return(&list[sindex]);
77 
78     return(&list[0]);
79 }
80 
81 static const struct smbfnsint *
82 smbfindint(int id, const struct smbfnsint *list)
83 {
84     int sindex;
85 
86     for (sindex = 0; list[sindex].name; sindex++)
87 	if (list[sindex].id == id)
88 	    return(&list[sindex]);
89 
90     return(&list[0]);
91 }
92 
93 static void
94 trans2_findfirst(netdissect_options *ndo,
95                  const u_char *param, const u_char *data, int pcnt, int dcnt)
96 {
97     const char *fmt;
98 
99     if (request)
100 	fmt = "Attribute=[A]\nSearchCount=[d]\nFlags=[w]\nLevel=[dP4]\nFile=[S]\n";
101     else
102 	fmt = "Handle=[w]\nCount=[d]\nEOS=[w]\nEoffset=[d]\nLastNameOfs=[w]\n";
103 
104     smb_fdata(ndo, param, fmt, param + pcnt, unicodestr);
105     if (dcnt) {
106 	ND_PRINT((ndo, "data:\n"));
107 	smb_print_data(ndo, data, dcnt);
108     }
109 }
110 
111 static void
112 trans2_qfsinfo(netdissect_options *ndo,
113                const u_char *param, const u_char *data, int pcnt, int dcnt)
114 {
115     static int level = 0;
116     const char *fmt="";
117 
118     if (request) {
119 	ND_TCHECK2(*param, 2);
120 	level = EXTRACT_LE_16BITS(param);
121 	fmt = "InfoLevel=[d]\n";
122 	smb_fdata(ndo, param, fmt, param + pcnt, unicodestr);
123     } else {
124 	switch (level) {
125 	case 1:
126 	    fmt = "idFileSystem=[W]\nSectorUnit=[D]\nUnit=[D]\nAvail=[D]\nSectorSize=[d]\n";
127 	    break;
128 	case 2:
129 	    fmt = "CreationTime=[T2]VolNameLength=[lb]\nVolumeLabel=[c]\n";
130 	    break;
131 	case 0x105:
132 	    fmt = "Capabilities=[W]\nMaxFileLen=[D]\nVolNameLen=[lD]\nVolume=[C]\n";
133 	    break;
134 	default:
135 	    fmt = "UnknownLevel\n";
136 	    break;
137 	}
138 	smb_fdata(ndo, data, fmt, data + dcnt, unicodestr);
139     }
140     if (dcnt) {
141 	ND_PRINT((ndo, "data:\n"));
142 	smb_print_data(ndo, data, dcnt);
143     }
144     return;
145 trunc:
146     ND_PRINT((ndo, "%s", tstr));
147 }
148 
149 static const struct smbfnsint trans2_fns[] = {
150     { 0, "TRANSACT2_OPEN", 0,
151 	{ "Flags2=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]\nOFun=[w]\nSize=[D]\nRes=([w, w, w, w, w])\nPath=[S]",
152 	  NULL,
153 	  "Handle=[d]\nAttrib=[A]\nTime=[T2]\nSize=[D]\nAccess=[w]\nType=[w]\nState=[w]\nAction=[w]\nInode=[W]\nOffErr=[d]\n|EALength=[d]\n",
154 	  NULL, NULL }},
155     { 1, "TRANSACT2_FINDFIRST", 0,
156 	{ NULL, NULL, NULL, NULL, trans2_findfirst }},
157     { 2, "TRANSACT2_FINDNEXT", 0, DEFDESCRIPT },
158     { 3, "TRANSACT2_QFSINFO", 0,
159 	{ NULL, NULL, NULL, NULL, trans2_qfsinfo }},
160     { 4, "TRANSACT2_SETFSINFO", 0, DEFDESCRIPT },
161     { 5, "TRANSACT2_QPATHINFO", 0, DEFDESCRIPT },
162     { 6, "TRANSACT2_SETPATHINFO", 0, DEFDESCRIPT },
163     { 7, "TRANSACT2_QFILEINFO", 0, DEFDESCRIPT },
164     { 8, "TRANSACT2_SETFILEINFO", 0, DEFDESCRIPT },
165     { 9, "TRANSACT2_FSCTL", 0, DEFDESCRIPT },
166     { 10, "TRANSACT2_IOCTL", 0, DEFDESCRIPT },
167     { 11, "TRANSACT2_FINDNOTIFYFIRST", 0, DEFDESCRIPT },
168     { 12, "TRANSACT2_FINDNOTIFYNEXT", 0, DEFDESCRIPT },
169     { 13, "TRANSACT2_MKDIR", 0, DEFDESCRIPT },
170     { -1, NULL, 0, DEFDESCRIPT }
171 };
172 
173 
174 static void
175 print_trans2(netdissect_options *ndo,
176              const u_char *words, const u_char *dat, const u_char *buf, const u_char *maxbuf)
177 {
178     u_int bcc;
179     static const struct smbfnsint *fn = &trans2_fns[0];
180     const u_char *data, *param;
181     const u_char *w = words + 1;
182     const char *f1 = NULL, *f2 = NULL;
183     int pcnt, dcnt;
184 
185     ND_TCHECK(words[0]);
186     if (request) {
187 	ND_TCHECK2(w[14 * 2], 2);
188 	pcnt = EXTRACT_LE_16BITS(w + 9 * 2);
189 	param = buf + EXTRACT_LE_16BITS(w + 10 * 2);
190 	dcnt = EXTRACT_LE_16BITS(w + 11 * 2);
191 	data = buf + EXTRACT_LE_16BITS(w + 12 * 2);
192 	fn = smbfindint(EXTRACT_LE_16BITS(w + 14 * 2), trans2_fns);
193     } else {
194 	if (words[0] == 0) {
195 	    ND_PRINT((ndo, "%s\n", fn->name));
196 	    ND_PRINT((ndo, "Trans2Interim\n"));
197 	    return;
198 	}
199 	ND_TCHECK2(w[7 * 2], 2);
200 	pcnt = EXTRACT_LE_16BITS(w + 3 * 2);
201 	param = buf + EXTRACT_LE_16BITS(w + 4 * 2);
202 	dcnt = EXTRACT_LE_16BITS(w + 6 * 2);
203 	data = buf + EXTRACT_LE_16BITS(w + 7 * 2);
204     }
205 
206     ND_PRINT((ndo, "%s param_length=%d data_length=%d\n", fn->name, pcnt, dcnt));
207 
208     if (request) {
209 	if (words[0] == 8) {
210 	    smb_fdata(ndo, words + 1,
211 		"Trans2Secondary\nTotParam=[d]\nTotData=[d]\nParamCnt=[d]\nParamOff=[d]\nParamDisp=[d]\nDataCnt=[d]\nDataOff=[d]\nDataDisp=[d]\nHandle=[d]\n",
212 		maxbuf, unicodestr);
213 	    return;
214 	} else {
215 	    smb_fdata(ndo, words + 1,
216 		"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",
217 		words + 1 + 14 * 2, unicodestr);
218 	}
219 	f1 = fn->descript.req_f1;
220 	f2 = fn->descript.req_f2;
221     } else {
222 	smb_fdata(ndo, words + 1,
223 	    "TotParam=[d]\nTotData=[d]\nRes1=[w]\nParamCnt=[d]\nParamOff=[d]\nParamDisp[d]\nDataCnt=[d]\nDataOff=[d]\nDataDisp=[d]\nSetupCnt=[b][P1]\n",
224 	    words + 1 + 10 * 2, unicodestr);
225 	f1 = fn->descript.rep_f1;
226 	f2 = fn->descript.rep_f2;
227     }
228 
229     ND_TCHECK2(*dat, 2);
230     bcc = EXTRACT_LE_16BITS(dat);
231     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
232     if (fn->descript.fn)
233 	(*fn->descript.fn)(ndo, param, data, pcnt, dcnt);
234     else {
235 	smb_fdata(ndo, param, f1 ? f1 : "Parameters=\n", param + pcnt, unicodestr);
236 	smb_fdata(ndo, data, f2 ? f2 : "Data=\n", data + dcnt, unicodestr);
237     }
238     return;
239 trunc:
240     ND_PRINT((ndo, "%s", tstr));
241 }
242 
243 static void
244 print_browse(netdissect_options *ndo,
245              const u_char *param, int paramlen, const u_char *data, int datalen)
246 {
247     const u_char *maxbuf = data + datalen;
248     int command;
249 
250     ND_TCHECK(data[0]);
251     command = data[0];
252 
253     smb_fdata(ndo, param, "BROWSE PACKET\n|Param ", param+paramlen, unicodestr);
254 
255     switch (command) {
256     case 0xF:
257 	data = smb_fdata(ndo, data,
258 	    "BROWSE PACKET:\nType=[B] (LocalMasterAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[d]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nElectionVersion=[w]\nBrowserConstant=[w]\n",
259 	    maxbuf, unicodestr);
260 	break;
261 
262     case 0x1:
263 	data = smb_fdata(ndo, data,
264 	    "BROWSE PACKET:\nType=[B] (HostAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[d]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nElectionVersion=[w]\nBrowserConstant=[w]\n",
265 	    maxbuf, unicodestr);
266 	break;
267 
268     case 0x2:
269 	data = smb_fdata(ndo, data,
270 	    "BROWSE PACKET:\nType=[B] (AnnouncementRequest)\nFlags=[B]\nReplySystemName=[S]\n",
271 	    maxbuf, unicodestr);
272 	break;
273 
274     case 0xc:
275 	data = smb_fdata(ndo, data,
276 	    "BROWSE PACKET:\nType=[B] (WorkgroupAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[d]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nCommentPointer=[W]\nServerName=[S]\n",
277 	    maxbuf, unicodestr);
278 	break;
279 
280     case 0x8:
281 	data = smb_fdata(ndo, data,
282 	    "BROWSE PACKET:\nType=[B] (ElectionFrame)\nElectionVersion=[B]\nOSSummary=[W]\nUptime=[(W, W)]\nServerName=[S]\n",
283 	    maxbuf, unicodestr);
284 	break;
285 
286     case 0xb:
287 	data = smb_fdata(ndo, data,
288 	    "BROWSE PACKET:\nType=[B] (BecomeBackupBrowser)\nName=[S]\n",
289 	    maxbuf, unicodestr);
290 	break;
291 
292     case 0x9:
293 	data = smb_fdata(ndo, data,
294 	    "BROWSE PACKET:\nType=[B] (GetBackupList)\nListCount?=[B]\nToken=[W]\n",
295 	    maxbuf, unicodestr);
296 	break;
297 
298     case 0xa:
299 	data = smb_fdata(ndo, data,
300 	    "BROWSE PACKET:\nType=[B] (BackupListResponse)\nServerCount?=[B]\nToken=[W]\n*Name=[S]\n",
301 	    maxbuf, unicodestr);
302 	break;
303 
304     case 0xd:
305 	data = smb_fdata(ndo, data,
306 	    "BROWSE PACKET:\nType=[B] (MasterAnnouncement)\nMasterName=[S]\n",
307 	    maxbuf, unicodestr);
308 	break;
309 
310     case 0xe:
311 	data = smb_fdata(ndo, data,
312 	    "BROWSE PACKET:\nType=[B] (ResetBrowser)\nOptions=[B]\n", maxbuf, unicodestr);
313 	break;
314 
315     default:
316 	data = smb_fdata(ndo, data, "Unknown Browser Frame ", maxbuf, unicodestr);
317 	break;
318     }
319     return;
320 trunc:
321     ND_PRINT((ndo, "%s", tstr));
322 }
323 
324 
325 static void
326 print_ipc(netdissect_options *ndo,
327           const u_char *param, int paramlen, const u_char *data, int datalen)
328 {
329     if (paramlen)
330 	smb_fdata(ndo, param, "Command=[w]\nStr1=[S]\nStr2=[S]\n", param + paramlen,
331 	    unicodestr);
332     if (datalen)
333 	smb_fdata(ndo, data, "IPC ", data + datalen, unicodestr);
334 }
335 
336 
337 static void
338 print_trans(netdissect_options *ndo,
339             const u_char *words, const u_char *data1, const u_char *buf, const u_char *maxbuf)
340 {
341     u_int bcc;
342     const char *f1, *f2, *f3, *f4;
343     const u_char *data, *param;
344     const u_char *w = words + 1;
345     int datalen, paramlen;
346 
347     if (request) {
348 	ND_TCHECK2(w[12 * 2], 2);
349 	paramlen = EXTRACT_LE_16BITS(w + 9 * 2);
350 	param = buf + EXTRACT_LE_16BITS(w + 10 * 2);
351 	datalen = EXTRACT_LE_16BITS(w + 11 * 2);
352 	data = buf + EXTRACT_LE_16BITS(w + 12 * 2);
353 	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";
354 	f2 = "|Name=[S]\n";
355 	f3 = "|Param ";
356 	f4 = "|Data ";
357     } else {
358 	ND_TCHECK2(w[7 * 2], 2);
359 	paramlen = EXTRACT_LE_16BITS(w + 3 * 2);
360 	param = buf + EXTRACT_LE_16BITS(w + 4 * 2);
361 	datalen = EXTRACT_LE_16BITS(w + 6 * 2);
362 	data = buf + EXTRACT_LE_16BITS(w + 7 * 2);
363 	f1 = "TotParamCnt=[d] \nTotDataCnt=[d] \nRes1=[d]\nParamCnt=[d] \nParamOff=[d] \nRes2=[d] \nDataCnt=[d] \nDataOff=[d] \nRes3=[d]\nLsetup=[d]\n";
364 	f2 = "|Unknown ";
365 	f3 = "|Param ";
366 	f4 = "|Data ";
367     }
368 
369     smb_fdata(ndo, words + 1, f1, min(words + 1 + 2 * words[0], maxbuf),
370         unicodestr);
371 
372     ND_TCHECK2(*data1, 2);
373     bcc = EXTRACT_LE_16BITS(data1);
374     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
375     if (bcc > 0) {
376 	smb_fdata(ndo, data1 + 2, f2, maxbuf - (paramlen + datalen), unicodestr);
377 
378 	if (strcmp((const char *)(data1 + 2), "\\MAILSLOT\\BROWSE") == 0) {
379 	    print_browse(ndo, param, paramlen, data, datalen);
380 	    return;
381 	}
382 
383 	if (strcmp((const char *)(data1 + 2), "\\PIPE\\LANMAN") == 0) {
384 	    print_ipc(ndo, param, paramlen, data, datalen);
385 	    return;
386 	}
387 
388 	if (paramlen)
389 	    smb_fdata(ndo, param, f3, min(param + paramlen, maxbuf), unicodestr);
390 	if (datalen)
391 	    smb_fdata(ndo, data, f4, min(data + datalen, maxbuf), unicodestr);
392     }
393     return;
394 trunc:
395     ND_PRINT((ndo, "%s", tstr));
396 }
397 
398 
399 static void
400 print_negprot(netdissect_options *ndo,
401               const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
402 {
403     u_int wct, bcc;
404     const char *f1 = NULL, *f2 = NULL;
405 
406     ND_TCHECK(words[0]);
407     wct = words[0];
408     if (request)
409 	f2 = "*|Dialect=[Y]\n";
410     else {
411 	if (wct == 1)
412 	    f1 = "Core Protocol\nDialectIndex=[d]";
413 	else if (wct == 17)
414 	    f1 = "NT1 Protocol\nDialectIndex=[d]\nSecMode=[B]\nMaxMux=[d]\nNumVcs=[d]\nMaxBuffer=[D]\nRawSize=[D]\nSessionKey=[W]\nCapabilities=[W]\nServerTime=[T3]TimeZone=[d]\nCryptKey=";
415 	else if (wct == 13)
416 	    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=";
417     }
418 
419     if (f1)
420 	smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
421 	    unicodestr);
422     else
423 	smb_print_data(ndo, words + 1, min(wct * 2, PTR_DIFF(maxbuf, words + 1)));
424 
425     ND_TCHECK2(*data, 2);
426     bcc = EXTRACT_LE_16BITS(data);
427     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
428     if (bcc > 0) {
429 	if (f2)
430 	    smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_16BITS(data),
431 		maxbuf), unicodestr);
432 	else
433 	    smb_print_data(ndo, data + 2, min(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
434     }
435     return;
436 trunc:
437     ND_PRINT((ndo, "%s", tstr));
438 }
439 
440 static void
441 print_sesssetup(netdissect_options *ndo,
442                 const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
443 {
444     u_int wct, bcc;
445     const char *f1 = NULL, *f2 = NULL;
446 
447     ND_TCHECK(words[0]);
448     wct = words[0];
449     if (request) {
450 	if (wct == 10)
451 	    f1 = "Com2=[w]\nOff2=[d]\nBufSize=[d]\nMpxMax=[d]\nVcNum=[d]\nSessionKey=[W]\nPassLen=[d]\nCryptLen=[d]\nCryptOff=[d]\nPass&Name=\n";
452 	else
453 	    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";
454     } else {
455 	if (wct == 3) {
456 	    f1 = "Com2=[w]\nOff2=[d]\nAction=[w]\n";
457 	} else if (wct == 13) {
458 	    f1 = "Com2=[B]\nRes=[B]\nOff2=[d]\nAction=[w]\n";
459 	    f2 = "NativeOS=[S]\nNativeLanMan=[S]\nPrimaryDomain=[S]\n";
460 	}
461     }
462 
463     if (f1)
464 	smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
465 	    unicodestr);
466     else
467 	smb_print_data(ndo, words + 1, min(wct * 2, PTR_DIFF(maxbuf, words + 1)));
468 
469     ND_TCHECK2(*data, 2);
470     bcc = EXTRACT_LE_16BITS(data);
471     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
472     if (bcc > 0) {
473 	if (f2)
474 	    smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_16BITS(data),
475 		maxbuf), unicodestr);
476 	else
477 	    smb_print_data(ndo, data + 2, min(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
478     }
479     return;
480 trunc:
481     ND_PRINT((ndo, "%s", tstr));
482 }
483 
484 static void
485 print_lockingandx(netdissect_options *ndo,
486                   const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
487 {
488     u_int wct, bcc;
489     const u_char *maxwords;
490     const char *f1 = NULL, *f2 = NULL;
491 
492     ND_TCHECK(words[0]);
493     wct = words[0];
494     if (request) {
495 	f1 = "Com2=[w]\nOff2=[d]\nHandle=[d]\nLockType=[w]\nTimeOut=[D]\nUnlockCount=[d]\nLockCount=[d]\n";
496 	ND_TCHECK(words[7]);
497 	if (words[7] & 0x10)
498 	    f2 = "*Process=[d]\n[P2]Offset=[M]\nLength=[M]\n";
499 	else
500 	    f2 = "*Process=[d]\nOffset=[D]\nLength=[D]\n";
501     } else {
502 	f1 = "Com2=[w]\nOff2=[d]\n";
503     }
504 
505     maxwords = min(words + 1 + wct * 2, maxbuf);
506     if (wct)
507 	smb_fdata(ndo, words + 1, f1, maxwords, unicodestr);
508 
509     ND_TCHECK2(*data, 2);
510     bcc = EXTRACT_LE_16BITS(data);
511     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
512     if (bcc > 0) {
513 	if (f2)
514 	    smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_16BITS(data),
515 		maxbuf), unicodestr);
516 	else
517 	    smb_print_data(ndo, data + 2, min(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
518     }
519     return;
520 trunc:
521     ND_PRINT((ndo, "%s", tstr));
522 }
523 
524 
525 static const struct smbfns smb_fns[] = {
526     { -1, "SMBunknown", 0, DEFDESCRIPT },
527 
528     { SMBtcon, "SMBtcon", 0,
529 	{ NULL, "Path=[Z]\nPassword=[Z]\nDevice=[Z]\n",
530 	  "MaxXmit=[d]\nTreeId=[d]\n", NULL,
531 	  NULL } },
532 
533     { SMBtdis, "SMBtdis", 0, DEFDESCRIPT },
534     { SMBexit,  "SMBexit", 0, DEFDESCRIPT },
535     { SMBioctl, "SMBioctl", 0, DEFDESCRIPT },
536 
537     { SMBecho, "SMBecho", 0,
538 	{ "ReverbCount=[d]\n", NULL,
539 	  "SequenceNum=[d]\n", NULL,
540 	  NULL } },
541 
542     { SMBulogoffX, "SMBulogoffX", FLG_CHAIN, DEFDESCRIPT },
543 
544     { SMBgetatr, "SMBgetatr", 0,
545 	{ NULL, "Path=[Z]\n",
546 	  "Attribute=[A]\nTime=[T2]Size=[D]\nRes=([w,w,w,w,w])\n", NULL,
547 	  NULL } },
548 
549     { SMBsetatr, "SMBsetatr", 0,
550 	{ "Attribute=[A]\nTime=[T2]Res=([w,w,w,w,w])\n", "Path=[Z]\n",
551 	  NULL, NULL, NULL } },
552 
553     { SMBchkpth, "SMBchkpth", 0,
554        { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
555 
556     { SMBsearch, "SMBsearch", 0,
557 	{ "Count=[d]\nAttrib=[A]\n",
558 	  "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\nRes2=[W]\n",
559 	  "Count=[d]\n",
560 	  "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",
561 	  NULL } },
562 
563     { SMBopen, "SMBopen", 0,
564 	{ "Mode=[w]\nAttribute=[A]\n", "Path=[Z]\n",
565 	  "Handle=[d]\nOAttrib=[A]\nTime=[T2]Size=[D]\nAccess=[w]\n",
566 	  NULL, NULL } },
567 
568     { SMBcreate, "SMBcreate", 0,
569 	{ "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[d]\n", NULL, NULL } },
570 
571     { SMBmknew, "SMBmknew", 0,
572 	{ "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[d]\n", NULL, NULL } },
573 
574     { SMBunlink, "SMBunlink", 0,
575 	{ "Attrib=[A]\n", "Path=[Z]\n", NULL, NULL, NULL } },
576 
577     { SMBread, "SMBread", 0,
578 	{ "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
579 	  "Count=[d]\nRes=([w,w,w,w])\n", NULL, NULL } },
580 
581     { SMBwrite, "SMBwrite", 0,
582 	{ "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
583 	  "Count=[d]\n", NULL, NULL } },
584 
585     { SMBclose, "SMBclose", 0,
586 	{ "Handle=[d]\nTime=[T2]", NULL, NULL, NULL, NULL } },
587 
588     { SMBmkdir, "SMBmkdir", 0,
589 	{ NULL, "Path=[Z]\n", NULL, NULL, NULL } },
590 
591     { SMBrmdir, "SMBrmdir", 0,
592 	{ NULL, "Path=[Z]\n", NULL, NULL, NULL } },
593 
594     { SMBdskattr, "SMBdskattr", 0,
595 	{ NULL, NULL,
596 	  "TotalUnits=[d]\nBlocksPerUnit=[d]\nBlockSize=[d]\nFreeUnits=[d]\nMedia=[w]\n",
597 	  NULL, NULL } },
598 
599     { SMBmv, "SMBmv", 0,
600 	{ "Attrib=[A]\n", "OldPath=[Z]\nNewPath=[Z]\n", NULL, NULL, NULL } },
601 
602     /*
603      * this is a Pathworks specific call, allowing the
604      * changing of the root path
605      */
606     { pSETDIR, "SMBsetdir", 0, { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
607 
608     { SMBlseek, "SMBlseek", 0,
609 	{ "Handle=[d]\nMode=[w]\nOffset=[D]\n", "Offset=[D]\n", NULL, NULL, NULL } },
610 
611     { SMBflush, "SMBflush", 0, { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
612 
613     { SMBsplopen, "SMBsplopen", 0,
614 	{ "SetupLen=[d]\nMode=[w]\n", "Ident=[Z]\n", "Handle=[d]\n",
615 	  NULL, NULL } },
616 
617     { SMBsplclose, "SMBsplclose", 0,
618 	{ "Handle=[d]\n", NULL, NULL, NULL, NULL } },
619 
620     { SMBsplretq, "SMBsplretq", 0,
621 	{ "MaxCount=[d]\nStartIndex=[d]\n", NULL,
622 	  "Count=[d]\nIndex=[d]\n",
623 	  "*Time=[T2]Status=[B]\nJobID=[d]\nSize=[D]\nRes=[B]Name=[s16]\n",
624 	  NULL } },
625 
626     { SMBsplwr, "SMBsplwr", 0,
627 	{ "Handle=[d]\n", NULL, NULL, NULL, NULL } },
628 
629     { SMBlock, "SMBlock", 0,
630 	{ "Handle=[d]\nCount=[D]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
631 
632     { SMBunlock, "SMBunlock", 0,
633 	{ "Handle=[d]\nCount=[D]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
634 
635     /* CORE+ PROTOCOL FOLLOWS */
636 
637     { SMBreadbraw, "SMBreadbraw", 0,
638 	{ "Handle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nRes=[d]\n",
639 	  NULL, NULL, NULL, NULL } },
640 
641     { SMBwritebraw, "SMBwritebraw", 0,
642 	{ "Handle=[d]\nTotalCount=[d]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\n|DataSize=[d]\nDataOff=[d]\n",
643 	  NULL, "WriteRawAck", NULL, NULL } },
644 
645     { SMBwritec, "SMBwritec", 0,
646 	{ NULL, NULL, "Count=[d]\n", NULL, NULL } },
647 
648     { SMBwriteclose, "SMBwriteclose", 0,
649 	{ "Handle=[d]\nCount=[d]\nOffset=[D]\nTime=[T2]Res=([w,w,w,w,w,w])",
650 	  NULL, "Count=[d]\n", NULL, NULL } },
651 
652     { SMBlockread, "SMBlockread", 0,
653 	{ "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
654 	  "Count=[d]\nRes=([w,w,w,w])\n", NULL, NULL } },
655 
656     { SMBwriteunlock, "SMBwriteunlock", 0,
657 	{ "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
658 	  "Count=[d]\n", NULL, NULL } },
659 
660     { SMBreadBmpx, "SMBreadBmpx", 0,
661 	{ "Handle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nRes=[w]\n",
662 	  NULL,
663 	  "Offset=[D]\nTotCount=[d]\nRemaining=[d]\nRes=([w,w])\nDataSize=[d]\nDataOff=[d]\n",
664 	  NULL, NULL } },
665 
666     { SMBwriteBmpx, "SMBwriteBmpx", 0,
667 	{ "Handle=[d]\nTotCount=[d]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\nDataSize=[d]\nDataOff=[d]\n", NULL,
668 	  "Remaining=[d]\n", NULL, NULL } },
669 
670     { SMBwriteBs, "SMBwriteBs", 0,
671 	{ "Handle=[d]\nTotCount=[d]\nOffset=[D]\nRes=[W]\nDataSize=[d]\nDataOff=[d]\n",
672 	  NULL, "Count=[d]\n", NULL, NULL } },
673 
674     { SMBsetattrE, "SMBsetattrE", 0,
675 	{ "Handle=[d]\nCreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]", NULL,
676 	  NULL, NULL, NULL } },
677 
678     { SMBgetattrE, "SMBgetattrE", 0,
679 	{ "Handle=[d]\n", NULL,
680 	  "CreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]Size=[D]\nAllocSize=[D]\nAttribute=[A]\n",
681 	  NULL, NULL } },
682 
683     { SMBtranss, "SMBtranss", 0, DEFDESCRIPT },
684     { SMBioctls, "SMBioctls", 0, DEFDESCRIPT },
685 
686     { SMBcopy, "SMBcopy", 0,
687 	{ "TreeID2=[d]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
688 	  "CopyCount=[d]\n",  "|ErrStr=[S]\n",  NULL } },
689 
690     { SMBmove, "SMBmove", 0,
691 	{ "TreeID2=[d]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
692 	  "MoveCount=[d]\n",  "|ErrStr=[S]\n",  NULL } },
693 
694     { SMBopenX, "SMBopenX", FLG_CHAIN,
695 	{ "Com2=[w]\nOff2=[d]\nFlags=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]OFun=[w]\nSize=[D]\nTimeOut=[D]\nRes=[W]\n",
696 	  "Path=[S]\n",
697 	  "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",
698 	  NULL, NULL } },
699 
700     { SMBreadX, "SMBreadX", FLG_CHAIN,
701 	{ "Com2=[w]\nOff2=[d]\nHandle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nCountLeft=[d]\n",
702 	  NULL,
703 	  "Com2=[w]\nOff2=[d]\nRemaining=[d]\nRes=[W]\nDataSize=[d]\nDataOff=[d]\nRes=([w,w,w,w])\n",
704 	  NULL, NULL } },
705 
706     { SMBwriteX, "SMBwriteX", FLG_CHAIN,
707 	{ "Com2=[w]\nOff2=[d]\nHandle=[d]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nCountLeft=[d]\nRes=[w]\nDataSize=[d]\nDataOff=[d]\n",
708 	  NULL,
709 	  "Com2=[w]\nOff2=[d]\nCount=[d]\nRemaining=[d]\nRes=[W]\n",
710 	  NULL, NULL } },
711 
712     { SMBffirst, "SMBffirst", 0,
713 	{ "Count=[d]\nAttrib=[A]\n",
714 	  "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
715 	  "Count=[d]\n",
716 	  "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",
717 	  NULL } },
718 
719     { SMBfunique, "SMBfunique", 0,
720 	{ "Count=[d]\nAttrib=[A]\n",
721 	  "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
722 	  "Count=[d]\n",
723 	  "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",
724 	  NULL } },
725 
726     { SMBfclose, "SMBfclose", 0,
727 	{ "Count=[d]\nAttrib=[A]\n",
728 	  "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
729 	  "Count=[d]\n",
730 	  "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",
731 	  NULL } },
732 
733     { SMBfindnclose, "SMBfindnclose", 0,
734 	{ "Handle=[d]\n", NULL, NULL, NULL, NULL } },
735 
736     { SMBfindclose, "SMBfindclose", 0,
737 	{ "Handle=[d]\n", NULL, NULL, NULL, NULL } },
738 
739     { SMBsends, "SMBsends", 0,
740 	{ NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
741 
742     { SMBsendstrt, "SMBsendstrt", 0,
743 	{ NULL, "Source=[Z]\nDest=[Z]\n", "GroupID=[d]\n", NULL, NULL } },
744 
745     { SMBsendend, "SMBsendend", 0,
746 	{ "GroupID=[d]\n", NULL, NULL, NULL, NULL } },
747 
748     { SMBsendtxt, "SMBsendtxt", 0,
749 	{ "GroupID=[d]\n", NULL, NULL, NULL, NULL } },
750 
751     { SMBsendb, "SMBsendb", 0,
752 	{ NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
753 
754     { SMBfwdname, "SMBfwdname", 0, DEFDESCRIPT },
755     { SMBcancelf, "SMBcancelf", 0, DEFDESCRIPT },
756     { SMBgetmac, "SMBgetmac", 0, DEFDESCRIPT },
757 
758     { SMBnegprot, "SMBnegprot", 0,
759 	{ NULL, NULL, NULL, NULL, print_negprot } },
760 
761     { SMBsesssetupX, "SMBsesssetupX", FLG_CHAIN,
762 	{ NULL, NULL, NULL, NULL, print_sesssetup } },
763 
764     { SMBtconX, "SMBtconX", FLG_CHAIN,
765 	{ "Com2=[w]\nOff2=[d]\nFlags=[w]\nPassLen=[d]\nPasswd&Path&Device=\n",
766 	  NULL, "Com2=[w]\nOff2=[d]\n", "ServiceType=[R]\n", NULL } },
767 
768     { SMBlockingX, "SMBlockingX", FLG_CHAIN,
769 	{ NULL, NULL, NULL, NULL, print_lockingandx } },
770 
771     { SMBtrans2, "SMBtrans2", 0, { NULL, NULL, NULL, NULL, print_trans2 } },
772 
773     { SMBtranss2, "SMBtranss2", 0, DEFDESCRIPT },
774     { SMBctemp, "SMBctemp", 0, DEFDESCRIPT },
775     { SMBreadBs, "SMBreadBs", 0, DEFDESCRIPT },
776     { SMBtrans, "SMBtrans", 0, { NULL, NULL, NULL, NULL, print_trans } },
777 
778     { SMBnttrans, "SMBnttrans", 0, DEFDESCRIPT },
779     { SMBnttranss, "SMBnttranss", 0, DEFDESCRIPT },
780 
781     { SMBntcreateX, "SMBntcreateX", FLG_CHAIN,
782 	{ "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",
783 	  "Path=[C]\n",
784 	  "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",
785 	  NULL, NULL } },
786 
787     { SMBntcancel, "SMBntcancel", 0, DEFDESCRIPT },
788 
789     { -1, NULL, 0, DEFDESCRIPT }
790 };
791 
792 
793 /*
794  * print a SMB message
795  */
796 static void
797 print_smb(netdissect_options *ndo,
798           const u_char *buf, const u_char *maxbuf)
799 {
800     uint16_t flags2;
801     int nterrcodes;
802     int command;
803     uint32_t nterror;
804     const u_char *words, *maxwords, *data;
805     const struct smbfns *fn;
806     const char *fmt_smbheader =
807         "[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";
808     int smboffset;
809 
810     ND_TCHECK(buf[9]);
811     request = (buf[9] & 0x80) ? 0 : 1;
812     flags2 = EXTRACT_LE_16BITS(&buf[10]);
813     unicodestr = flags2 & 0x8000;
814     nterrcodes = flags2 & 0x4000;
815     startbuf = buf;
816 
817     command = buf[4];
818 
819     fn = smbfind(command, smb_fns);
820 
821     if (ndo->ndo_vflag > 1)
822 	ND_PRINT((ndo, "\n"));
823 
824     ND_PRINT((ndo, "SMB PACKET: %s (%s)\n", fn->name, request ? "REQUEST" : "REPLY"));
825 
826     if (ndo->ndo_vflag < 2)
827 	return;
828 
829     /* print out the header */
830     smb_fdata(ndo, buf, fmt_smbheader, buf + 33, unicodestr);
831 
832     if (nterrcodes) {
833     	nterror = EXTRACT_LE_32BITS(&buf[5]);
834 	if (nterror)
835 	    ND_PRINT((ndo, "NTError = %s\n", nt_errstr(nterror)));
836     } else {
837 	if (buf[5])
838 	    ND_PRINT((ndo, "SMBError = %s\n", smb_errstr(buf[5], EXTRACT_LE_16BITS(&buf[7]))));
839     }
840 
841     smboffset = 32;
842 
843     for (;;) {
844 	const char *f1, *f2;
845 	int wct;
846 	u_int bcc;
847 	int newsmboffset;
848 
849 	words = buf + smboffset;
850 	ND_TCHECK(words[0]);
851 	wct = words[0];
852 	data = words + 1 + wct * 2;
853 	maxwords = min(data, maxbuf);
854 
855 	if (request) {
856 	    f1 = fn->descript.req_f1;
857 	    f2 = fn->descript.req_f2;
858 	} else {
859 	    f1 = fn->descript.rep_f1;
860 	    f2 = fn->descript.rep_f2;
861 	}
862 
863 	if (fn->descript.fn)
864 	    (*fn->descript.fn)(ndo, words, data, buf, maxbuf);
865 	else {
866 	    if (wct) {
867 		if (f1)
868 		    smb_fdata(ndo, words + 1, f1, words + 1 + wct * 2, unicodestr);
869 		else {
870 		    int i;
871 		    int v;
872 
873 		    for (i = 0; &words[1 + 2 * i] < maxwords; i++) {
874 			ND_TCHECK2(words[1 + 2 * i], 2);
875 			v = EXTRACT_LE_16BITS(words + 1 + 2 * i);
876 			ND_PRINT((ndo, "smb_vwv[%d]=%d (0x%X)\n", i, v, v));
877 		    }
878 		}
879 	    }
880 
881 	    ND_TCHECK2(*data, 2);
882 	    bcc = EXTRACT_LE_16BITS(data);
883 	    ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
884 	    if (f2) {
885 		if (bcc > 0)
886 		    smb_fdata(ndo, data + 2, f2, data + 2 + bcc, unicodestr);
887 	    } else {
888 		if (bcc > 0) {
889 		    ND_PRINT((ndo, "smb_buf[]=\n"));
890 		    smb_print_data(ndo, data + 2, min(bcc, PTR_DIFF(maxbuf, data + 2)));
891 		}
892 	    }
893 	}
894 
895 	if ((fn->flags & FLG_CHAIN) == 0)
896 	    break;
897 	if (wct == 0)
898 	    break;
899 	ND_TCHECK(words[1]);
900 	command = words[1];
901 	if (command == 0xFF)
902 	    break;
903 	ND_TCHECK2(words[3], 2);
904 	newsmboffset = EXTRACT_LE_16BITS(words + 3);
905 
906 	fn = smbfind(command, smb_fns);
907 
908 	ND_PRINT((ndo, "\nSMB PACKET: %s (%s) (CHAINED)\n",
909 	    fn->name, request ? "REQUEST" : "REPLY"));
910 	if (newsmboffset <= smboffset) {
911 	    ND_PRINT((ndo, "Bad andX offset: %u <= %u\n", newsmboffset, smboffset));
912 	    break;
913 	}
914 	smboffset = newsmboffset;
915     }
916 
917     ND_PRINT((ndo, "\n"));
918     return;
919 trunc:
920     ND_PRINT((ndo, "%s", tstr));
921 }
922 
923 
924 /*
925  * print a NBT packet received across tcp on port 139
926  */
927 void
928 nbt_tcp_print(netdissect_options *ndo,
929               const u_char *data, int length)
930 {
931     int caplen;
932     int type;
933     u_int nbt_len;
934     const u_char *maxbuf;
935 
936     if (length < 4)
937 	goto trunc;
938     if (ndo->ndo_snapend < data)
939 	goto trunc;
940     caplen = ndo->ndo_snapend - data;
941     if (caplen < 4)
942 	goto trunc;
943     maxbuf = data + caplen;
944     type = data[0];
945     nbt_len = EXTRACT_16BITS(data + 2);
946     length -= 4;
947     caplen -= 4;
948 
949     startbuf = data;
950 
951     if (ndo->ndo_vflag < 2) {
952 	ND_PRINT((ndo, " NBT Session Packet: "));
953 	switch (type) {
954 	case 0x00:
955 	    ND_PRINT((ndo, "Session Message"));
956 	    break;
957 
958 	case 0x81:
959 	    ND_PRINT((ndo, "Session Request"));
960 	    break;
961 
962 	case 0x82:
963 	    ND_PRINT((ndo, "Session Granted"));
964 	    break;
965 
966 	case 0x83:
967 	  {
968 	    int ecode;
969 
970 	    if (nbt_len < 4)
971 		goto trunc;
972 	    if (length < 4)
973 		goto trunc;
974 	    if (caplen < 4)
975 		goto trunc;
976 	    ecode = data[4];
977 
978 	    ND_PRINT((ndo, "Session Reject, "));
979 	    switch (ecode) {
980 	    case 0x80:
981 		ND_PRINT((ndo, "Not listening on called name"));
982 		break;
983 	    case 0x81:
984 		ND_PRINT((ndo, "Not listening for calling name"));
985 		break;
986 	    case 0x82:
987 		ND_PRINT((ndo, "Called name not present"));
988 		break;
989 	    case 0x83:
990 		ND_PRINT((ndo, "Called name present, but insufficient resources"));
991 		break;
992 	    default:
993 		ND_PRINT((ndo, "Unspecified error 0x%X", ecode));
994 		break;
995 	    }
996 	  }
997 	    break;
998 
999 	case 0x85:
1000 	    ND_PRINT((ndo, "Session Keepalive"));
1001 	    break;
1002 
1003 	default:
1004 	    data = smb_fdata(ndo, data, "Unknown packet type [rB]", maxbuf, 0);
1005 	    break;
1006 	}
1007     } else {
1008 	ND_PRINT((ndo, "\n>>> NBT Session Packet\n"));
1009 	switch (type) {
1010 	case 0x00:
1011 	    data = smb_fdata(ndo, data, "[P1]NBT Session Message\nFlags=[B]\nLength=[rd]\n",
1012 		data + 4, 0);
1013 	    if (data == NULL)
1014 		break;
1015 	    if (nbt_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1016 		if ((int)nbt_len > caplen) {
1017 		    if ((int)nbt_len > length)
1018 			ND_PRINT((ndo, "WARNING: Packet is continued in later TCP segments\n"));
1019 		    else
1020 			ND_PRINT((ndo, "WARNING: Short packet. Try increasing the snap length by %d\n",
1021 			    nbt_len - caplen));
1022 		}
1023 		print_smb(ndo, data, maxbuf > data + nbt_len ? data + nbt_len : maxbuf);
1024 	    } else
1025 		ND_PRINT((ndo, "Session packet:(raw data or continuation?)\n"));
1026 	    break;
1027 
1028 	case 0x81:
1029 	    data = smb_fdata(ndo, data,
1030 		"[P1]NBT Session Request\nFlags=[B]\nLength=[rd]\nDestination=[n1]\nSource=[n1]\n",
1031 		maxbuf, 0);
1032 	    break;
1033 
1034 	case 0x82:
1035 	    data = smb_fdata(ndo, data, "[P1]NBT Session Granted\nFlags=[B]\nLength=[rd]\n", maxbuf, 0);
1036 	    break;
1037 
1038 	case 0x83:
1039 	  {
1040 	    const u_char *origdata;
1041 	    int ecode;
1042 
1043 	    origdata = data;
1044 	    data = smb_fdata(ndo, data, "[P1]NBT SessionReject\nFlags=[B]\nLength=[rd]\nReason=[B]\n",
1045 		maxbuf, 0);
1046 	    if (data == NULL)
1047 		break;
1048 	    if (nbt_len >= 1 && caplen >= 1) {
1049 		ecode = origdata[4];
1050 		switch (ecode) {
1051 		case 0x80:
1052 		    ND_PRINT((ndo, "Not listening on called name\n"));
1053 		    break;
1054 		case 0x81:
1055 		    ND_PRINT((ndo, "Not listening for calling name\n"));
1056 		    break;
1057 		case 0x82:
1058 		    ND_PRINT((ndo, "Called name not present\n"));
1059 		    break;
1060 		case 0x83:
1061 		    ND_PRINT((ndo, "Called name present, but insufficient resources\n"));
1062 		    break;
1063 		default:
1064 		    ND_PRINT((ndo, "Unspecified error 0x%X\n", ecode));
1065 		    break;
1066 		}
1067 	    }
1068 	  }
1069 	    break;
1070 
1071 	case 0x85:
1072 	    data = smb_fdata(ndo, data, "[P1]NBT Session Keepalive\nFlags=[B]\nLength=[rd]\n", maxbuf, 0);
1073 	    break;
1074 
1075 	default:
1076 	    data = smb_fdata(ndo, data, "NBT - Unknown packet type\nType=[B]\n", maxbuf, 0);
1077 	    break;
1078 	}
1079 	ND_PRINT((ndo, "\n"));
1080     }
1081     return;
1082 trunc:
1083     ND_PRINT((ndo, "%s", tstr));
1084 }
1085 
1086 static const struct tok opcode_str[] = {
1087 	{ 0,  "QUERY"                   },
1088 	{ 5,  "REGISTRATION"            },
1089 	{ 6,  "RELEASE"                 },
1090 	{ 7,  "WACK"                    },
1091 	{ 8,  "REFRESH(8)"              },
1092 	{ 9,  "REFRESH"                 },
1093 	{ 15, "MULTIHOMED REGISTRATION" },
1094 	{ 0, NULL }
1095 };
1096 
1097 /*
1098  * print a NBT packet received across udp on port 137
1099  */
1100 void
1101 nbt_udp137_print(netdissect_options *ndo,
1102                  const u_char *data, int length)
1103 {
1104     const u_char *maxbuf = data + length;
1105     int name_trn_id, response, opcode, nm_flags, rcode;
1106     int qdcount, ancount, nscount, arcount;
1107     const u_char *p;
1108     int total, i;
1109 
1110     ND_TCHECK2(data[10], 2);
1111     name_trn_id = EXTRACT_16BITS(data);
1112     response = (data[2] >> 7);
1113     opcode = (data[2] >> 3) & 0xF;
1114     nm_flags = ((data[2] & 0x7) << 4) + (data[3] >> 4);
1115     rcode = data[3] & 0xF;
1116     qdcount = EXTRACT_16BITS(data + 4);
1117     ancount = EXTRACT_16BITS(data + 6);
1118     nscount = EXTRACT_16BITS(data + 8);
1119     arcount = EXTRACT_16BITS(data + 10);
1120     startbuf = data;
1121 
1122     if (maxbuf <= data)
1123 	return;
1124 
1125     if (ndo->ndo_vflag > 1)
1126 	ND_PRINT((ndo, "\n>>> "));
1127 
1128     ND_PRINT((ndo, "NBT UDP PACKET(137): %s", tok2str(opcode_str, "OPUNKNOWN", opcode)));
1129     if (response) {
1130         ND_PRINT((ndo, "; %s", rcode ? "NEGATIVE" : "POSITIVE"));
1131     }
1132     ND_PRINT((ndo, "; %s; %s", response ? "RESPONSE" : "REQUEST",
1133               (nm_flags & 1) ? "BROADCAST" : "UNICAST"));
1134 
1135     if (ndo->ndo_vflag < 2)
1136 	return;
1137 
1138     ND_PRINT((ndo, "\nTrnID=0x%X\nOpCode=%d\nNmFlags=0x%X\nRcode=%d\nQueryCount=%d\nAnswerCount=%d\nAuthorityCount=%d\nAddressRecCount=%d\n",
1139 	name_trn_id, opcode, nm_flags, rcode, qdcount, ancount, nscount,
1140 	arcount));
1141 
1142     p = data + 12;
1143 
1144     total = ancount + nscount + arcount;
1145 
1146     if (qdcount > 100 || total > 100) {
1147 	ND_PRINT((ndo, "Corrupt packet??\n"));
1148 	return;
1149     }
1150 
1151     if (qdcount) {
1152 	ND_PRINT((ndo, "QuestionRecords:\n"));
1153 	for (i = 0; i < qdcount; i++) {
1154 	    p = smb_fdata(ndo, p,
1155 		"|Name=[n1]\nQuestionType=[rw]\nQuestionClass=[rw]\n#",
1156 		maxbuf, 0);
1157 	    if (p == NULL)
1158 		goto out;
1159 	}
1160     }
1161 
1162     if (total) {
1163 	ND_PRINT((ndo, "\nResourceRecords:\n"));
1164 	for (i = 0; i < total; i++) {
1165 	    int rdlen;
1166 	    int restype;
1167 
1168 	    p = smb_fdata(ndo, p, "Name=[n1]\n#", maxbuf, 0);
1169 	    if (p == NULL)
1170 		goto out;
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 	    rdlen = EXTRACT_16BITS(p);
1176 	    ND_PRINT((ndo, "ResourceLength=%d\nResourceData=\n", rdlen));
1177 	    p += 2;
1178 	    if (rdlen == 6) {
1179 		p = smb_fdata(ndo, p, "AddrType=[rw]\nAddress=[b.b.b.b]\n", p + rdlen, 0);
1180 		if (p == NULL)
1181 		    goto out;
1182 	    } else {
1183 		if (restype == 0x21) {
1184 		    int numnames;
1185 
1186 		    ND_TCHECK(*p);
1187 		    numnames = p[0];
1188 		    p = smb_fdata(ndo, p, "NumNames=[B]\n", p + 1, 0);
1189 		    if (p == NULL)
1190 			goto out;
1191 		    while (numnames--) {
1192 			p = smb_fdata(ndo, p, "Name=[n2]\t#", maxbuf, 0);
1193 			if (p == NULL)
1194 			    goto out;
1195 			ND_TCHECK(*p);
1196 			if (p[0] & 0x80)
1197 			    ND_PRINT((ndo, "<GROUP> "));
1198 			switch (p[0] & 0x60) {
1199 			case 0x00: ND_PRINT((ndo, "B ")); break;
1200 			case 0x20: ND_PRINT((ndo, "P ")); break;
1201 			case 0x40: ND_PRINT((ndo, "M ")); break;
1202 			case 0x60: ND_PRINT((ndo, "_ ")); break;
1203 			}
1204 			if (p[0] & 0x10)
1205 			    ND_PRINT((ndo, "<DEREGISTERING> "));
1206 			if (p[0] & 0x08)
1207 			    ND_PRINT((ndo, "<CONFLICT> "));
1208 			if (p[0] & 0x04)
1209 			    ND_PRINT((ndo, "<ACTIVE> "));
1210 			if (p[0] & 0x02)
1211 			    ND_PRINT((ndo, "<PERMANENT> "));
1212 			ND_PRINT((ndo, "\n"));
1213 			p += 2;
1214 		    }
1215 		} else {
1216 		    smb_print_data(ndo, p, min(rdlen, length - (p - data)));
1217 		    p += rdlen;
1218 		}
1219 	    }
1220 	}
1221     }
1222 
1223     if (p < maxbuf)
1224 	smb_fdata(ndo, p, "AdditionalData:\n", maxbuf, 0);
1225 
1226 out:
1227     ND_PRINT((ndo, "\n"));
1228     return;
1229 trunc:
1230     ND_PRINT((ndo, "%s", tstr));
1231 }
1232 
1233 /*
1234  * Print an SMB-over-TCP packet received across tcp on port 445
1235  */
1236 void
1237 smb_tcp_print(netdissect_options *ndo,
1238               const u_char * data, int length)
1239 {
1240     int caplen;
1241     u_int smb_len;
1242     const u_char *maxbuf;
1243 
1244     if (length < 4)
1245 	goto trunc;
1246     if (ndo->ndo_snapend < data)
1247 	goto trunc;
1248     caplen = ndo->ndo_snapend - data;
1249     if (caplen < 4)
1250 	goto trunc;
1251     maxbuf = data + caplen;
1252     smb_len = EXTRACT_24BITS(data + 1);
1253     length -= 4;
1254     caplen -= 4;
1255 
1256     startbuf = data;
1257     data += 4;
1258 
1259     if (smb_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1260 	if ((int)smb_len > caplen) {
1261 	    if ((int)smb_len > length)
1262 		ND_PRINT((ndo, " WARNING: Packet is continued in later TCP segments\n"));
1263 	    else
1264 		ND_PRINT((ndo, " WARNING: Short packet. Try increasing the snap length by %d\n",
1265 		    smb_len - caplen));
1266 	} else
1267 	    ND_PRINT((ndo, " "));
1268 	print_smb(ndo, data, maxbuf > data + smb_len ? data + smb_len : maxbuf);
1269     } else
1270 	ND_PRINT((ndo, " SMB-over-TCP packet:(raw data or continuation?)\n"));
1271     return;
1272 trunc:
1273     ND_PRINT((ndo, "%s", tstr));
1274 }
1275 
1276 /*
1277  * print a NBT packet received across udp on port 138
1278  */
1279 void
1280 nbt_udp138_print(netdissect_options *ndo,
1281                  const u_char *data, int length)
1282 {
1283     const u_char *maxbuf = data + length;
1284 
1285     if (maxbuf > ndo->ndo_snapend)
1286 	maxbuf = ndo->ndo_snapend;
1287     if (maxbuf <= data)
1288 	return;
1289     startbuf = data;
1290 
1291     if (ndo->ndo_vflag < 2) {
1292 	ND_PRINT((ndo, "NBT UDP PACKET(138)"));
1293 	return;
1294     }
1295 
1296     data = smb_fdata(ndo, data,
1297 	"\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#",
1298 	maxbuf, 0);
1299 
1300     if (data != NULL) {
1301 	/* If there isn't enough data for "\377SMB", don't check for it. */
1302 	if (&data[3] >= maxbuf)
1303 	    goto out;
1304 
1305 	if (memcmp(data, "\377SMB",4) == 0)
1306 	    print_smb(ndo, data, maxbuf);
1307     }
1308 out:
1309     ND_PRINT((ndo, "\n"));
1310 }
1311 
1312 
1313 /*
1314    print netbeui frames
1315 */
1316 struct nbf_strings {
1317 	const char	*name;
1318 	const char	*nonverbose;
1319 	const char	*verbose;
1320 } nbf_strings[0x20] = {
1321 	{ "Add Group Name Query", ", [P23]Name to add=[n2]#",
1322 	  "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1323 	{ "Add Name Query", ", [P23]Name to add=[n2]#",
1324 	  "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1325 	{ "Name In Conflict", NULL, NULL },
1326 	{ "Status Query", NULL, NULL },
1327 	{ NULL, NULL, NULL },	/* not used */
1328 	{ NULL, NULL, NULL },	/* not used */
1329 	{ NULL, NULL, NULL },	/* not used */
1330 	{ "Terminate Trace", NULL, NULL },
1331 	{ "Datagram", NULL,
1332 	  "[P7]Destination=[n2]\nSource=[n2]\n" },
1333 	{ "Broadcast Datagram", NULL,
1334 	  "[P7]Destination=[n2]\nSource=[n2]\n" },
1335 	{ "Name Query", ", [P7]Name=[n2]#",
1336 	  "[P1]SessionNumber=[B]\nNameType=[B][P2]\nResponseCorrelator=[w]\nName=[n2]\nName of sender=[n2]\n" },
1337 	{ NULL, NULL, NULL },	/* not used */
1338 	{ NULL, NULL, NULL },	/* not used */
1339 	{ "Add Name Response", ", [P1]GroupName=[w] [P4]Destination=[n2] Source=[n2]#",
1340 	  "AddNameInProcess=[B]\nGroupName=[w]\nTransmitCorrelator=[w][P2]\nDestination=[n2]\nSource=[n2]\n" },
1341 	{ "Name Recognized", NULL,
1342 	  "[P1]Data2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nDestination=[n2]\nSource=[n2]\n" },
1343 	{ "Status Response", NULL, NULL },
1344 	{ NULL, NULL, NULL },	/* not used */
1345 	{ NULL, NULL, NULL },	/* not used */
1346 	{ NULL, NULL, NULL },	/* not used */
1347 	{ "Terminate Trace", NULL, NULL },
1348 	{ "Data Ack", NULL,
1349 	  "[P3]TransmitCorrelator=[w][P2]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1350 	{ "Data First/Middle", NULL,
1351 	  "Flags=[{RECEIVE_CONTINUE|NO_ACK||PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1352 	{ "Data Only/Last", NULL,
1353 	  "Flags=[{|NO_ACK|PIGGYBACK_ACK_ALLOWED|PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1354 	{ "Session Confirm", NULL,
1355 	  "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1356 	{ "Session End", NULL,
1357 	  "[P1]Data2=[w][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1358 	{ "Session Initialize", NULL,
1359 	  "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1360 	{ "No Receive", NULL,
1361 	  "Flags=[{|SEND_NO_ACK}]\nDataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1362 	{ "Receive Outstanding", NULL,
1363 	  "[P1]DataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1364 	{ "Receive Continue", NULL,
1365 	  "[P2]TransmitCorrelator=[w]\n[P2]RemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1366 	{ NULL, NULL, NULL },	/* not used */
1367 	{ NULL, NULL, NULL },	/* not used */
1368 	{ "Session Alive", NULL, NULL }
1369 };
1370 
1371 void
1372 netbeui_print(netdissect_options *ndo,
1373               u_short control, const u_char *data, int length)
1374 {
1375     const u_char *maxbuf = data + length;
1376     int len;
1377     int command;
1378     const u_char *data2;
1379     int is_truncated = 0;
1380 
1381     if (maxbuf > ndo->ndo_snapend)
1382 	maxbuf = ndo->ndo_snapend;
1383     ND_TCHECK(data[4]);
1384     len = EXTRACT_LE_16BITS(data);
1385     command = data[4];
1386     data2 = data + len;
1387     if (data2 >= maxbuf) {
1388 	data2 = maxbuf;
1389 	is_truncated = 1;
1390     }
1391 
1392     startbuf = data;
1393 
1394     if (ndo->ndo_vflag < 2) {
1395 	ND_PRINT((ndo, "NBF Packet: "));
1396 	data = smb_fdata(ndo, data, "[P5]#", maxbuf, 0);
1397     } else {
1398 	ND_PRINT((ndo, "\n>>> NBF Packet\nType=0x%X ", control));
1399 	data = smb_fdata(ndo, data, "Length=[d] Signature=[w] Command=[B]\n#", maxbuf, 0);
1400     }
1401     if (data == NULL)
1402 	goto out;
1403 
1404     if (command > 0x1f || nbf_strings[command].name == NULL) {
1405 	if (ndo->ndo_vflag < 2)
1406 	    data = smb_fdata(ndo, data, "Unknown NBF Command#", data2, 0);
1407 	else
1408 	    data = smb_fdata(ndo, data, "Unknown NBF Command\n", data2, 0);
1409     } else {
1410 	if (ndo->ndo_vflag < 2) {
1411 	    ND_PRINT((ndo, "%s", nbf_strings[command].name));
1412 	    if (nbf_strings[command].nonverbose != NULL)
1413 		data = smb_fdata(ndo, data, nbf_strings[command].nonverbose, data2, 0);
1414 	} else {
1415 	    ND_PRINT((ndo, "%s:\n", nbf_strings[command].name));
1416 	    if (nbf_strings[command].verbose != NULL)
1417 		data = smb_fdata(ndo, data, nbf_strings[command].verbose, data2, 0);
1418 	    else
1419 		ND_PRINT((ndo, "\n"));
1420 	}
1421     }
1422 
1423     if (ndo->ndo_vflag < 2)
1424 	return;
1425 
1426     if (data == NULL)
1427 	goto out;
1428 
1429     if (is_truncated) {
1430 	/* data2 was past the end of the buffer */
1431 	goto out;
1432     }
1433 
1434     /* If this isn't a command that would contain an SMB message, quit. */
1435     if (command != 0x08 && command != 0x09 && command != 0x15 &&
1436         command != 0x16)
1437 	goto out;
1438 
1439     /* If there isn't enough data for "\377SMB", don't look for it. */
1440     if (&data2[3] >= maxbuf)
1441 	goto out;
1442 
1443     if (memcmp(data2, "\377SMB",4) == 0)
1444 	print_smb(ndo, data2, maxbuf);
1445     else {
1446 	int i;
1447 	for (i = 0; i < 128; i++) {
1448 	    if (&data2[i + 3] >= maxbuf)
1449 		break;
1450 	    if (memcmp(&data2[i], "\377SMB", 4) == 0) {
1451 		ND_PRINT((ndo, "found SMB packet at %d\n", i));
1452 		print_smb(ndo, &data2[i], maxbuf);
1453 		break;
1454 	    }
1455 	}
1456     }
1457 
1458 out:
1459     ND_PRINT((ndo, "\n"));
1460     return;
1461 trunc:
1462     ND_PRINT((ndo, "%s", tstr));
1463 }
1464 
1465 
1466 /*
1467  * print IPX-Netbios frames
1468  */
1469 void
1470 ipx_netbios_print(netdissect_options *ndo,
1471                   const u_char *data, u_int length)
1472 {
1473     /*
1474      * this is a hack till I work out how to parse the rest of the
1475      * NetBIOS-over-IPX stuff
1476      */
1477     int i;
1478     const u_char *maxbuf;
1479 
1480     maxbuf = data + length;
1481     /* Don't go past the end of the captured data in the packet. */
1482     if (maxbuf > ndo->ndo_snapend)
1483 	maxbuf = ndo->ndo_snapend;
1484     startbuf = data;
1485     for (i = 0; i < 128; i++) {
1486 	if (&data[i + 4] > maxbuf)
1487 	    break;
1488 	if (memcmp(&data[i], "\377SMB", 4) == 0) {
1489 	    smb_fdata(ndo, data, "\n>>> IPX transport ", &data[i], 0);
1490 	    print_smb(ndo, &data[i], maxbuf);
1491 	    ND_PRINT((ndo, "\n"));
1492 	    break;
1493 	}
1494     }
1495     if (i == 128)
1496 	smb_fdata(ndo, data, "\n>>> Unknown IPX ", maxbuf, 0);
1497 }
1498