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 #include <config.h>
12
13 #include "netdissect-stdinc.h"
14
15 #include <string.h>
16
17 #include "netdissect.h"
18 #include "extract.h"
19 #include "smb.h"
20
21
22 static int request = 0;
23 static int unicodestr = 0;
24
25 extern const u_char *startbuf;
26
27 const u_char *startbuf = NULL;
28
29 struct smbdescript {
30 const char *req_f1;
31 const char *req_f2;
32 const char *rep_f1;
33 const char *rep_f2;
34 void (*fn)(netdissect_options *, const u_char *, const u_char *, const u_char *, const u_char *);
35 };
36
37 struct smbdescriptint {
38 const char *req_f1;
39 const char *req_f2;
40 const char *rep_f1;
41 const char *rep_f2;
42 void (*fn)(netdissect_options *, const u_char *, const u_char *, u_int, u_int);
43 };
44
45 struct smbfns
46 {
47 int id;
48 const char *name;
49 int flags;
50 struct smbdescript descript;
51 };
52
53 struct smbfnsint
54 {
55 int id;
56 const char *name;
57 int flags;
58 struct smbdescriptint descript;
59 };
60
61 #define DEFDESCRIPT { NULL, NULL, NULL, NULL, NULL }
62
63 #define FLG_CHAIN (1 << 0)
64
65 static const struct smbfns *
smbfind(int id,const struct smbfns * list)66 smbfind(int id, const struct smbfns *list)
67 {
68 int sindex;
69
70 for (sindex = 0; list[sindex].name; sindex++)
71 if (list[sindex].id == id)
72 return(&list[sindex]);
73
74 return(&list[0]);
75 }
76
77 static const struct smbfnsint *
smbfindint(int id,const struct smbfnsint * list)78 smbfindint(int id, const struct smbfnsint *list)
79 {
80 int sindex;
81
82 for (sindex = 0; list[sindex].name; sindex++)
83 if (list[sindex].id == id)
84 return(&list[sindex]);
85
86 return(&list[0]);
87 }
88
89 static void
trans2_findfirst(netdissect_options * ndo,const u_char * param,const u_char * data,u_int pcnt,u_int dcnt)90 trans2_findfirst(netdissect_options *ndo,
91 const u_char *param, const u_char *data, u_int pcnt, u_int dcnt)
92 {
93 const char *fmt;
94
95 if (request)
96 fmt = "Attribute=[A]\nSearchCount=[u]\nFlags=[w]\nLevel=[uP4]\nFile=[S]\n";
97 else
98 fmt = "Handle=[w]\nCount=[u]\nEOS=[w]\nEoffset=[u]\nLastNameOfs=[w]\n";
99
100 smb_fdata(ndo, param, fmt, param + pcnt, unicodestr);
101 if (dcnt) {
102 ND_PRINT("data:\n");
103 smb_data_print(ndo, data, dcnt);
104 }
105 }
106
107 static void
trans2_qfsinfo(netdissect_options * ndo,const u_char * param,const u_char * data,u_int pcnt,u_int dcnt)108 trans2_qfsinfo(netdissect_options *ndo,
109 const u_char *param, const u_char *data, u_int pcnt, u_int dcnt)
110 {
111 static u_int level = 0;
112 const char *fmt="";
113
114 if (request) {
115 level = GET_LE_U_2(param);
116 fmt = "InfoLevel=[u]\n";
117 smb_fdata(ndo, param, fmt, param + pcnt, unicodestr);
118 } else {
119 switch (level) {
120 case 1:
121 fmt = "idFileSystem=[W]\nSectorUnit=[U]\nUnit=[U]\nAvail=[U]\nSectorSize=[u]\n";
122 break;
123 case 2:
124 fmt = "CreationTime=[T2]VolNameLength=[lb]\nVolumeLabel=[c]\n";
125 break;
126 case 0x105:
127 fmt = "Capabilities=[W]\nMaxFileLen=[U]\nVolNameLen=[lU]\nVolume=[C]\n";
128 break;
129 default:
130 fmt = "UnknownLevel\n";
131 break;
132 }
133 smb_fdata(ndo, data, fmt, data + dcnt, unicodestr);
134 }
135 if (dcnt) {
136 ND_PRINT("data:\n");
137 smb_data_print(ndo, data, dcnt);
138 }
139 }
140
141 static const struct smbfnsint trans2_fns[] = {
142 { 0, "TRANSACT2_OPEN", 0,
143 { "Flags2=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]\nOFun=[w]\nSize=[U]\nRes=([w, w, w, w, w])\nPath=[S]",
144 NULL,
145 "Handle=[u]\nAttrib=[A]\nTime=[T2]\nSize=[U]\nAccess=[w]\nType=[w]\nState=[w]\nAction=[w]\nInode=[W]\nOffErr=[u]\n|EALength=[u]\n",
146 NULL, NULL }},
147 { 1, "TRANSACT2_FINDFIRST", 0,
148 { NULL, NULL, NULL, NULL, trans2_findfirst }},
149 { 2, "TRANSACT2_FINDNEXT", 0, DEFDESCRIPT },
150 { 3, "TRANSACT2_QFSINFO", 0,
151 { NULL, NULL, NULL, NULL, trans2_qfsinfo }},
152 { 4, "TRANSACT2_SETFSINFO", 0, DEFDESCRIPT },
153 { 5, "TRANSACT2_QPATHINFO", 0, DEFDESCRIPT },
154 { 6, "TRANSACT2_SETPATHINFO", 0, DEFDESCRIPT },
155 { 7, "TRANSACT2_QFILEINFO", 0, DEFDESCRIPT },
156 { 8, "TRANSACT2_SETFILEINFO", 0, DEFDESCRIPT },
157 { 9, "TRANSACT2_FSCTL", 0, DEFDESCRIPT },
158 { 10, "TRANSACT2_IOCTL", 0, DEFDESCRIPT },
159 { 11, "TRANSACT2_FINDNOTIFYFIRST", 0, DEFDESCRIPT },
160 { 12, "TRANSACT2_FINDNOTIFYNEXT", 0, DEFDESCRIPT },
161 { 13, "TRANSACT2_MKDIR", 0, DEFDESCRIPT },
162 { -1, NULL, 0, DEFDESCRIPT }
163 };
164
165
166 static void
print_trans2(netdissect_options * ndo,const u_char * words,const u_char * dat,const u_char * buf,const u_char * maxbuf)167 print_trans2(netdissect_options *ndo,
168 const u_char *words, const u_char *dat, const u_char *buf, const u_char *maxbuf)
169 {
170 u_int bcc;
171 static const struct smbfnsint *fn = &trans2_fns[0];
172 const u_char *data, *param;
173 const u_char *w = words + 1;
174 const char *f1 = NULL, *f2 = NULL;
175 u_int pcnt, dcnt;
176
177 ND_TCHECK_1(words);
178 if (request) {
179 ND_TCHECK_2(w + (14 * 2));
180 pcnt = GET_LE_U_2(w + 9 * 2);
181 param = buf + GET_LE_U_2(w + 10 * 2);
182 dcnt = GET_LE_U_2(w + 11 * 2);
183 data = buf + GET_LE_U_2(w + 12 * 2);
184 fn = smbfindint(GET_LE_U_2(w + 14 * 2), trans2_fns);
185 } else {
186 if (GET_U_1(words) == 0) {
187 ND_PRINT("%s\n", fn->name);
188 ND_PRINT("Trans2Interim\n");
189 return;
190 }
191 ND_TCHECK_2(w + (7 * 2));
192 pcnt = GET_LE_U_2(w + 3 * 2);
193 param = buf + GET_LE_U_2(w + 4 * 2);
194 dcnt = GET_LE_U_2(w + 6 * 2);
195 data = buf + GET_LE_U_2(w + 7 * 2);
196 }
197
198 ND_PRINT("%s param_length=%u data_length=%u\n", fn->name, pcnt, dcnt);
199
200 if (request) {
201 if (GET_U_1(words) == 8) {
202 smb_fdata(ndo, words + 1,
203 "Trans2Secondary\nTotParam=[u]\nTotData=[u]\nParamCnt=[u]\nParamOff=[u]\nParamDisp=[u]\nDataCnt=[u]\nDataOff=[u]\nDataDisp=[u]\nHandle=[u]\n",
204 maxbuf, unicodestr);
205 return;
206 } else {
207 smb_fdata(ndo, words + 1,
208 "TotParam=[u]\nTotData=[u]\nMaxParam=[u]\nMaxData=[u]\nMaxSetup=[b][P1]\nFlags=[w]\nTimeOut=[D]\nRes1=[w]\nParamCnt=[u]\nParamOff=[u]\nDataCnt=[u]\nDataOff=[u]\nSetupCnt=[b][P1]\n",
209 words + 1 + 14 * 2, unicodestr);
210 }
211 f1 = fn->descript.req_f1;
212 f2 = fn->descript.req_f2;
213 } else {
214 smb_fdata(ndo, words + 1,
215 "TotParam=[u]\nTotData=[u]\nRes1=[w]\nParamCnt=[u]\nParamOff=[u]\nParamDisp[u]\nDataCnt=[u]\nDataOff=[u]\nDataDisp=[u]\nSetupCnt=[b][P1]\n",
216 words + 1 + 10 * 2, unicodestr);
217 f1 = fn->descript.rep_f1;
218 f2 = fn->descript.rep_f2;
219 }
220
221 bcc = GET_LE_U_2(dat);
222 ND_PRINT("smb_bcc=%u\n", bcc);
223 if (fn->descript.fn)
224 (*fn->descript.fn)(ndo, param, data, pcnt, dcnt);
225 else {
226 smb_fdata(ndo, param, f1 ? f1 : "Parameters=\n", param + pcnt, unicodestr);
227 smb_fdata(ndo, data, f2 ? f2 : "Data=\n", data + dcnt, unicodestr);
228 }
229 return;
230 trunc:
231 nd_print_trunc(ndo);
232 }
233
234 static void
print_browse(netdissect_options * ndo,const u_char * param,u_int paramlen,const u_char * data,u_int datalen)235 print_browse(netdissect_options *ndo,
236 const u_char *param, u_int paramlen, const u_char *data, u_int datalen)
237 {
238 const u_char *maxbuf = data + datalen;
239 u_int command;
240
241 command = GET_U_1(data);
242
243 smb_fdata(ndo, param, "BROWSE PACKET\n|Param ", param+paramlen, unicodestr);
244
245 switch (command) {
246 case 0xF:
247 data = smb_fdata(ndo, data,
248 "BROWSE PACKET:\nType=[B] (LocalMasterAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[u]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nElectionVersion=[w]\nBrowserConstant=[w]\n",
249 maxbuf, unicodestr);
250 break;
251
252 case 0x1:
253 data = smb_fdata(ndo, data,
254 "BROWSE PACKET:\nType=[B] (HostAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[u]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nElectionVersion=[w]\nBrowserConstant=[w]\n",
255 maxbuf, unicodestr);
256 break;
257
258 case 0x2:
259 data = smb_fdata(ndo, data,
260 "BROWSE PACKET:\nType=[B] (AnnouncementRequest)\nFlags=[B]\nReplySystemName=[S]\n",
261 maxbuf, unicodestr);
262 break;
263
264 case 0xc:
265 data = smb_fdata(ndo, data,
266 "BROWSE PACKET:\nType=[B] (WorkgroupAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[u]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nCommentPointer=[W]\nServerName=[S]\n",
267 maxbuf, unicodestr);
268 break;
269
270 case 0x8:
271 data = smb_fdata(ndo, data,
272 "BROWSE PACKET:\nType=[B] (ElectionFrame)\nElectionVersion=[B]\nOSSummary=[W]\nUptime=[(W, W)]\nServerName=[S]\n",
273 maxbuf, unicodestr);
274 break;
275
276 case 0xb:
277 data = smb_fdata(ndo, data,
278 "BROWSE PACKET:\nType=[B] (BecomeBackupBrowser)\nName=[S]\n",
279 maxbuf, unicodestr);
280 break;
281
282 case 0x9:
283 data = smb_fdata(ndo, data,
284 "BROWSE PACKET:\nType=[B] (GetBackupList)\nListCount?=[B]\nToken=[W]\n",
285 maxbuf, unicodestr);
286 break;
287
288 case 0xa:
289 data = smb_fdata(ndo, data,
290 "BROWSE PACKET:\nType=[B] (BackupListResponse)\nServerCount?=[B]\nToken=[W]\n*Name=[S]\n",
291 maxbuf, unicodestr);
292 break;
293
294 case 0xd:
295 data = smb_fdata(ndo, data,
296 "BROWSE PACKET:\nType=[B] (MasterAnnouncement)\nMasterName=[S]\n",
297 maxbuf, unicodestr);
298 break;
299
300 case 0xe:
301 data = smb_fdata(ndo, data,
302 "BROWSE PACKET:\nType=[B] (ResetBrowser)\nOptions=[B]\n", maxbuf, unicodestr);
303 break;
304
305 default:
306 data = smb_fdata(ndo, data, "Unknown Browser Frame ", maxbuf, unicodestr);
307 break;
308 }
309 }
310
311
312 static void
print_ipc(netdissect_options * ndo,const u_char * param,u_int paramlen,const u_char * data,u_int datalen)313 print_ipc(netdissect_options *ndo,
314 const u_char *param, u_int paramlen, const u_char *data, u_int datalen)
315 {
316 if (paramlen)
317 smb_fdata(ndo, param, "Command=[w]\nStr1=[S]\nStr2=[S]\n", param + paramlen,
318 unicodestr);
319 if (datalen)
320 smb_fdata(ndo, data, "IPC ", data + datalen, unicodestr);
321 }
322
323
324 static void
print_trans(netdissect_options * ndo,const u_char * words,const u_char * data1,const u_char * buf,const u_char * maxbuf)325 print_trans(netdissect_options *ndo,
326 const u_char *words, const u_char *data1, const u_char *buf, const u_char *maxbuf)
327 {
328 u_int bcc;
329 const char *f1, *f2, *f3, *f4;
330 const u_char *data, *param;
331 const u_char *w = words + 1;
332 u_int datalen, paramlen;
333
334 if (request) {
335 ND_TCHECK_2(w + (12 * 2));
336 paramlen = GET_LE_U_2(w + 9 * 2);
337 param = buf + GET_LE_U_2(w + 10 * 2);
338 datalen = GET_LE_U_2(w + 11 * 2);
339 data = buf + GET_LE_U_2(w + 12 * 2);
340 f1 = "TotParamCnt=[u]\nTotDataCnt=[u]\nMaxParmCnt=[u]\nMaxDataCnt=[u]\nMaxSCnt=[u]\nTransFlags=[w]\nRes1=[w]\nRes2=[w]\nRes3=[w]\nParamCnt=[u]\nParamOff=[u]\nDataCnt=[u]\nDataOff=[u]\nSUCnt=[u]\n";
341 f2 = "|Name=[S]\n";
342 f3 = "|Param ";
343 f4 = "|Data ";
344 } else {
345 ND_TCHECK_2(w + (7 * 2));
346 paramlen = GET_LE_U_2(w + 3 * 2);
347 param = buf + GET_LE_U_2(w + 4 * 2);
348 datalen = GET_LE_U_2(w + 6 * 2);
349 data = buf + GET_LE_U_2(w + 7 * 2);
350 f1 = "TotParamCnt=[u]\nTotDataCnt=[u]\nRes1=[u]\nParamCnt=[u]\nParamOff=[u]\nRes2=[u]\nDataCnt=[u]\nDataOff=[u]\nRes3=[u]\nLsetup=[u]\n";
351 f2 = "|Unknown ";
352 f3 = "|Param ";
353 f4 = "|Data ";
354 }
355
356 smb_fdata(ndo, words + 1, f1,
357 ND_MIN(words + 1 + 2 * GET_U_1(words), maxbuf),
358 unicodestr);
359
360 bcc = GET_LE_U_2(data1);
361 ND_PRINT("smb_bcc=%u\n", bcc);
362 if (bcc > 0) {
363 smb_fdata(ndo, data1 + 2, f2, maxbuf - (paramlen + datalen), unicodestr);
364
365 #define MAILSLOT_BROWSE_STR "\\MAILSLOT\\BROWSE"
366 ND_TCHECK_LEN(data1 + 2, strlen(MAILSLOT_BROWSE_STR) + 1);
367 if (strcmp((const char *)(data1 + 2), MAILSLOT_BROWSE_STR) == 0) {
368 print_browse(ndo, param, paramlen, data, datalen);
369 return;
370 }
371 #undef MAILSLOT_BROWSE_STR
372
373 #define PIPE_LANMAN_STR "\\PIPE\\LANMAN"
374 ND_TCHECK_LEN(data1 + 2, strlen(PIPE_LANMAN_STR) + 1);
375 if (strcmp((const char *)(data1 + 2), PIPE_LANMAN_STR) == 0) {
376 print_ipc(ndo, param, paramlen, data, datalen);
377 return;
378 }
379 #undef PIPE_LANMAN_STR
380
381 if (paramlen)
382 smb_fdata(ndo, param, f3, ND_MIN(param + paramlen, maxbuf), unicodestr);
383 if (datalen)
384 smb_fdata(ndo, data, f4, ND_MIN(data + datalen, maxbuf), unicodestr);
385 }
386 return;
387 trunc:
388 nd_print_trunc(ndo);
389 }
390
391
392 static void
print_negprot(netdissect_options * ndo,const u_char * words,const u_char * data,const u_char * buf _U_,const u_char * maxbuf)393 print_negprot(netdissect_options *ndo,
394 const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
395 {
396 u_int wct, bcc;
397 const char *f1 = NULL, *f2 = NULL;
398
399 wct = GET_U_1(words);
400 if (request)
401 f2 = "*|Dialect=[Y]\n";
402 else {
403 if (wct == 1)
404 f1 = "Core Protocol\nDialectIndex=[u]";
405 else if (wct == 17)
406 f1 = "NT1 Protocol\nDialectIndex=[u]\nSecMode=[B]\nMaxMux=[u]\nNumVcs=[u]\nMaxBuffer=[U]\nRawSize=[U]\nSessionKey=[W]\nCapabilities=[W]\nServerTime=[T3]TimeZone=[u]\nCryptKey=";
407 else if (wct == 13)
408 f1 = "Coreplus/Lanman1/Lanman2 Protocol\nDialectIndex=[u]\nSecMode=[w]\nMaxXMit=[u]\nMaxMux=[u]\nMaxVcs=[u]\nBlkMode=[w]\nSessionKey=[W]\nServerTime=[T1]TimeZone=[u]\nRes=[W]\nCryptKey=";
409 }
410
411 if (f1)
412 smb_fdata(ndo, words + 1, f1, ND_MIN(words + 1 + wct * 2, maxbuf),
413 unicodestr);
414 else
415 smb_data_print(ndo, words + 1,
416 ND_MIN(wct * 2, ND_BYTES_BETWEEN(words + 1, maxbuf)));
417
418 bcc = GET_LE_U_2(data);
419 ND_PRINT("smb_bcc=%u\n", bcc);
420 if (bcc > 0) {
421 if (f2)
422 smb_fdata(ndo, data + 2, f2, ND_MIN(data + 2 + GET_LE_U_2(data),
423 maxbuf), unicodestr);
424 else
425 smb_data_print(ndo, data + 2,
426 ND_MIN(GET_LE_U_2(data), ND_BYTES_BETWEEN(data + 2, maxbuf)));
427 }
428 }
429
430 static void
print_sesssetup(netdissect_options * ndo,const u_char * words,const u_char * data,const u_char * buf _U_,const u_char * maxbuf)431 print_sesssetup(netdissect_options *ndo,
432 const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
433 {
434 u_int wct, bcc;
435 const char *f1 = NULL, *f2 = NULL;
436
437 wct = GET_U_1(words);
438 if (request) {
439 if (wct == 10)
440 f1 = "Com2=[w]\nOff2=[u]\nBufSize=[u]\nMpxMax=[u]\nVcNum=[u]\nSessionKey=[W]\nPassLen=[u]\nCryptLen=[u]\nCryptOff=[u]\nPass&Name=\n";
441 else
442 f1 = "Com2=[B]\nRes1=[B]\nOff2=[u]\nMaxBuffer=[u]\nMaxMpx=[u]\nVcNumber=[u]\nSessionKey=[W]\nCaseInsensitivePasswordLength=[u]\nCaseSensitivePasswordLength=[u]\nRes=[W]\nCapabilities=[W]\nPass1&Pass2&Account&Domain&OS&LanMan=\n";
443 } else {
444 if (wct == 3) {
445 f1 = "Com2=[w]\nOff2=[u]\nAction=[w]\n";
446 } else if (wct == 13) {
447 f1 = "Com2=[B]\nRes=[B]\nOff2=[u]\nAction=[w]\n";
448 f2 = "NativeOS=[S]\nNativeLanMan=[S]\nPrimaryDomain=[S]\n";
449 }
450 }
451
452 if (f1)
453 smb_fdata(ndo, words + 1, f1, ND_MIN(words + 1 + wct * 2, maxbuf),
454 unicodestr);
455 else
456 smb_data_print(ndo, words + 1,
457 ND_MIN(wct * 2, ND_BYTES_BETWEEN(words + 1, maxbuf)));
458
459 bcc = GET_LE_U_2(data);
460 ND_PRINT("smb_bcc=%u\n", bcc);
461 if (bcc > 0) {
462 if (f2)
463 smb_fdata(ndo, data + 2, f2, ND_MIN(data + 2 + GET_LE_U_2(data),
464 maxbuf), unicodestr);
465 else
466 smb_data_print(ndo, data + 2,
467 ND_MIN(GET_LE_U_2(data), ND_BYTES_BETWEEN(data + 2, maxbuf)));
468 }
469 }
470
471 static void
print_lockingandx(netdissect_options * ndo,const u_char * words,const u_char * data,const u_char * buf _U_,const u_char * maxbuf)472 print_lockingandx(netdissect_options *ndo,
473 const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
474 {
475 u_int wct, bcc;
476 const u_char *maxwords;
477 const char *f1 = NULL, *f2 = NULL;
478
479 wct = GET_U_1(words);
480 if (request) {
481 f1 = "Com2=[w]\nOff2=[u]\nHandle=[u]\nLockType=[w]\nTimeOut=[D]\nUnlockCount=[u]\nLockCount=[u]\n";
482 if (GET_U_1(words + 7) & 0x10)
483 f2 = "*Process=[u]\n[P2]Offset=[M]\nLength=[M]\n";
484 else
485 f2 = "*Process=[u]\nOffset=[D]\nLength=[U]\n";
486 } else {
487 f1 = "Com2=[w]\nOff2=[u]\n";
488 }
489
490 maxwords = ND_MIN(words + 1 + wct * 2, maxbuf);
491 if (wct)
492 smb_fdata(ndo, words + 1, f1, maxwords, unicodestr);
493
494 bcc = GET_LE_U_2(data);
495 ND_PRINT("smb_bcc=%u\n", bcc);
496 if (bcc > 0) {
497 if (f2)
498 smb_fdata(ndo, data + 2, f2, ND_MIN(data + 2 + GET_LE_U_2(data),
499 maxbuf), unicodestr);
500 else
501 smb_data_print(ndo, data + 2,
502 ND_MIN(GET_LE_U_2(data), ND_BYTES_BETWEEN(data + 2, maxbuf)));
503 }
504 }
505
506
507 static const struct smbfns smb_fns[] = {
508 { -1, "SMBunknown", 0, DEFDESCRIPT },
509
510 { SMBtcon, "SMBtcon", 0,
511 { NULL, "Path=[Z]\nPassword=[Z]\nDevice=[Z]\n",
512 "MaxXmit=[u]\nTreeId=[u]\n", NULL,
513 NULL } },
514
515 { SMBtdis, "SMBtdis", 0, DEFDESCRIPT },
516 { SMBexit, "SMBexit", 0, DEFDESCRIPT },
517 { SMBioctl, "SMBioctl", 0, DEFDESCRIPT },
518
519 { SMBecho, "SMBecho", 0,
520 { "ReverbCount=[u]\n", NULL,
521 "SequenceNum=[u]\n", NULL,
522 NULL } },
523
524 { SMBulogoffX, "SMBulogoffX", FLG_CHAIN, DEFDESCRIPT },
525
526 { SMBgetatr, "SMBgetatr", 0,
527 { NULL, "Path=[Z]\n",
528 "Attribute=[A]\nTime=[T2]Size=[U]\nRes=([w,w,w,w,w])\n", NULL,
529 NULL } },
530
531 { SMBsetatr, "SMBsetatr", 0,
532 { "Attribute=[A]\nTime=[T2]Res=([w,w,w,w,w])\n", "Path=[Z]\n",
533 NULL, NULL, NULL } },
534
535 { SMBchkpth, "SMBchkpth", 0,
536 { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
537
538 { SMBsearch, "SMBsearch", 0,
539 { "Count=[u]\nAttrib=[A]\n",
540 "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\nRes2=[W]\n",
541 "Count=[u]\n",
542 "BlkType=[B]\nBlkLen=[u]\n*\nRes1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\nRes2=[W]\nAttrib=[a]\nTime=[T1]Size=[U]\nName=[s13]\n",
543 NULL } },
544
545 { SMBopen, "SMBopen", 0,
546 { "Mode=[w]\nAttribute=[A]\n", "Path=[Z]\n",
547 "Handle=[u]\nOAttrib=[A]\nTime=[T2]Size=[U]\nAccess=[w]\n",
548 NULL, NULL } },
549
550 { SMBcreate, "SMBcreate", 0,
551 { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[u]\n", NULL, NULL } },
552
553 { SMBmknew, "SMBmknew", 0,
554 { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[u]\n", NULL, NULL } },
555
556 { SMBunlink, "SMBunlink", 0,
557 { "Attrib=[A]\n", "Path=[Z]\n", NULL, NULL, NULL } },
558
559 { SMBread, "SMBread", 0,
560 { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
561 "Count=[u]\nRes=([w,w,w,w])\n", NULL, NULL } },
562
563 { SMBwrite, "SMBwrite", 0,
564 { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
565 "Count=[u]\n", NULL, NULL } },
566
567 { SMBclose, "SMBclose", 0,
568 { "Handle=[u]\nTime=[T2]", NULL, NULL, NULL, NULL } },
569
570 { SMBmkdir, "SMBmkdir", 0,
571 { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
572
573 { SMBrmdir, "SMBrmdir", 0,
574 { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
575
576 { SMBdskattr, "SMBdskattr", 0,
577 { NULL, NULL,
578 "TotalUnits=[u]\nBlocksPerUnit=[u]\nBlockSize=[u]\nFreeUnits=[u]\nMedia=[w]\n",
579 NULL, NULL } },
580
581 { SMBmv, "SMBmv", 0,
582 { "Attrib=[A]\n", "OldPath=[Z]\nNewPath=[Z]\n", NULL, NULL, NULL } },
583
584 /*
585 * this is a Pathworks specific call, allowing the
586 * changing of the root path
587 */
588 { pSETDIR, "SMBsetdir", 0, { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
589
590 { SMBlseek, "SMBlseek", 0,
591 { "Handle=[u]\nMode=[w]\nOffset=[D]\n", "Offset=[D]\n", NULL, NULL, NULL } },
592
593 { SMBflush, "SMBflush", 0, { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
594
595 { SMBsplopen, "SMBsplopen", 0,
596 { "SetupLen=[u]\nMode=[w]\n", "Ident=[Z]\n", "Handle=[u]\n",
597 NULL, NULL } },
598
599 { SMBsplclose, "SMBsplclose", 0,
600 { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
601
602 { SMBsplretq, "SMBsplretq", 0,
603 { "MaxCount=[u]\nStartIndex=[u]\n", NULL,
604 "Count=[u]\nIndex=[u]\n",
605 "*Time=[T2]Status=[B]\nJobID=[u]\nSize=[U]\nRes=[B]Name=[s16]\n",
606 NULL } },
607
608 { SMBsplwr, "SMBsplwr", 0,
609 { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
610
611 { SMBlock, "SMBlock", 0,
612 { "Handle=[u]\nCount=[U]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
613
614 { SMBunlock, "SMBunlock", 0,
615 { "Handle=[u]\nCount=[U]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
616
617 /* CORE+ PROTOCOL FOLLOWS */
618
619 { SMBreadbraw, "SMBreadbraw", 0,
620 { "Handle=[u]\nOffset=[D]\nMaxCount=[u]\nMinCount=[u]\nTimeOut=[D]\nRes=[u]\n",
621 NULL, NULL, NULL, NULL } },
622
623 { SMBwritebraw, "SMBwritebraw", 0,
624 { "Handle=[u]\nTotalCount=[u]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\n|DataSize=[u]\nDataOff=[u]\n",
625 NULL, "WriteRawAck", NULL, NULL } },
626
627 { SMBwritec, "SMBwritec", 0,
628 { NULL, NULL, "Count=[u]\n", NULL, NULL } },
629
630 { SMBwriteclose, "SMBwriteclose", 0,
631 { "Handle=[u]\nCount=[u]\nOffset=[D]\nTime=[T2]Res=([w,w,w,w,w,w])",
632 NULL, "Count=[u]\n", NULL, NULL } },
633
634 { SMBlockread, "SMBlockread", 0,
635 { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
636 "Count=[u]\nRes=([w,w,w,w])\n", NULL, NULL } },
637
638 { SMBwriteunlock, "SMBwriteunlock", 0,
639 { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
640 "Count=[u]\n", NULL, NULL } },
641
642 { SMBreadBmpx, "SMBreadBmpx", 0,
643 { "Handle=[u]\nOffset=[D]\nMaxCount=[u]\nMinCount=[u]\nTimeOut=[D]\nRes=[w]\n",
644 NULL,
645 "Offset=[D]\nTotCount=[u]\nRemaining=[u]\nRes=([w,w])\nDataSize=[u]\nDataOff=[u]\n",
646 NULL, NULL } },
647
648 { SMBwriteBmpx, "SMBwriteBmpx", 0,
649 { "Handle=[u]\nTotCount=[u]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\nDataSize=[u]\nDataOff=[u]\n", NULL,
650 "Remaining=[u]\n", NULL, NULL } },
651
652 { SMBwriteBs, "SMBwriteBs", 0,
653 { "Handle=[u]\nTotCount=[u]\nOffset=[D]\nRes=[W]\nDataSize=[u]\nDataOff=[u]\n",
654 NULL, "Count=[u]\n", NULL, NULL } },
655
656 { SMBsetattrE, "SMBsetattrE", 0,
657 { "Handle=[u]\nCreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]", NULL,
658 NULL, NULL, NULL } },
659
660 { SMBgetattrE, "SMBgetattrE", 0,
661 { "Handle=[u]\n", NULL,
662 "CreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]Size=[U]\nAllocSize=[U]\nAttribute=[A]\n",
663 NULL, NULL } },
664
665 { SMBtranss, "SMBtranss", 0, DEFDESCRIPT },
666 { SMBioctls, "SMBioctls", 0, DEFDESCRIPT },
667
668 { SMBcopy, "SMBcopy", 0,
669 { "TreeID2=[u]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
670 "CopyCount=[u]\n", "|ErrStr=[S]\n", NULL } },
671
672 { SMBmove, "SMBmove", 0,
673 { "TreeID2=[u]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
674 "MoveCount=[u]\n", "|ErrStr=[S]\n", NULL } },
675
676 { SMBopenX, "SMBopenX", FLG_CHAIN,
677 { "Com2=[w]\nOff2=[u]\nFlags=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]OFun=[w]\nSize=[U]\nTimeOut=[D]\nRes=[W]\n",
678 "Path=[S]\n",
679 "Com2=[w]\nOff2=[u]\nHandle=[u]\nAttrib=[A]\nTime=[T2]Size=[U]\nAccess=[w]\nType=[w]\nState=[w]\nAction=[w]\nFileID=[W]\nRes=[w]\n",
680 NULL, NULL } },
681
682 { SMBreadX, "SMBreadX", FLG_CHAIN,
683 { "Com2=[w]\nOff2=[u]\nHandle=[u]\nOffset=[D]\nMaxCount=[u]\nMinCount=[u]\nTimeOut=[D]\nCountLeft=[u]\n",
684 NULL,
685 "Com2=[w]\nOff2=[u]\nRemaining=[u]\nRes=[W]\nDataSize=[u]\nDataOff=[u]\nRes=([w,w,w,w])\n",
686 NULL, NULL } },
687
688 { SMBwriteX, "SMBwriteX", FLG_CHAIN,
689 { "Com2=[w]\nOff2=[u]\nHandle=[u]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nCountLeft=[u]\nRes=[w]\nDataSize=[u]\nDataOff=[u]\n",
690 NULL,
691 "Com2=[w]\nOff2=[u]\nCount=[u]\nRemaining=[u]\nRes=[W]\n",
692 NULL, NULL } },
693
694 { SMBffirst, "SMBffirst", 0,
695 { "Count=[u]\nAttrib=[A]\n",
696 "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\n",
697 "Count=[u]\n",
698 "BlkType=[B]\nBlkLen=[u]\n*\nRes1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\nRes2=[W]\nAttrib=[a]\nTime=[T1]Size=[U]\nName=[s13]\n",
699 NULL } },
700
701 { SMBfunique, "SMBfunique", 0,
702 { "Count=[u]\nAttrib=[A]\n",
703 "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\n",
704 "Count=[u]\n",
705 "BlkType=[B]\nBlkLen=[u]\n*\nRes1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\nRes2=[W]\nAttrib=[a]\nTime=[T1]Size=[U]\nName=[s13]\n",
706 NULL } },
707
708 { SMBfclose, "SMBfclose", 0,
709 { "Count=[u]\nAttrib=[A]\n",
710 "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\n",
711 "Count=[u]\n",
712 "BlkType=[B]\nBlkLen=[u]\n*\nRes1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\nRes2=[W]\nAttrib=[a]\nTime=[T1]Size=[U]\nName=[s13]\n",
713 NULL } },
714
715 { SMBfindnclose, "SMBfindnclose", 0,
716 { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
717
718 { SMBfindclose, "SMBfindclose", 0,
719 { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
720
721 { SMBsends, "SMBsends", 0,
722 { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
723
724 { SMBsendstrt, "SMBsendstrt", 0,
725 { NULL, "Source=[Z]\nDest=[Z]\n", "GroupID=[u]\n", NULL, NULL } },
726
727 { SMBsendend, "SMBsendend", 0,
728 { "GroupID=[u]\n", NULL, NULL, NULL, NULL } },
729
730 { SMBsendtxt, "SMBsendtxt", 0,
731 { "GroupID=[u]\n", NULL, NULL, NULL, NULL } },
732
733 { SMBsendb, "SMBsendb", 0,
734 { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
735
736 { SMBfwdname, "SMBfwdname", 0, DEFDESCRIPT },
737 { SMBcancelf, "SMBcancelf", 0, DEFDESCRIPT },
738 { SMBgetmac, "SMBgetmac", 0, DEFDESCRIPT },
739
740 { SMBnegprot, "SMBnegprot", 0,
741 { NULL, NULL, NULL, NULL, print_negprot } },
742
743 { SMBsesssetupX, "SMBsesssetupX", FLG_CHAIN,
744 { NULL, NULL, NULL, NULL, print_sesssetup } },
745
746 { SMBtconX, "SMBtconX", FLG_CHAIN,
747 { "Com2=[w]\nOff2=[u]\nFlags=[w]\nPassLen=[u]\nPasswd&Path&Device=\n",
748 NULL, "Com2=[w]\nOff2=[u]\n", "ServiceType=[R]\n", NULL } },
749
750 { SMBlockingX, "SMBlockingX", FLG_CHAIN,
751 { NULL, NULL, NULL, NULL, print_lockingandx } },
752
753 { SMBtrans2, "SMBtrans2", 0, { NULL, NULL, NULL, NULL, print_trans2 } },
754
755 { SMBtranss2, "SMBtranss2", 0, DEFDESCRIPT },
756 { SMBctemp, "SMBctemp", 0, DEFDESCRIPT },
757 { SMBreadBs, "SMBreadBs", 0, DEFDESCRIPT },
758 { SMBtrans, "SMBtrans", 0, { NULL, NULL, NULL, NULL, print_trans } },
759
760 { SMBnttrans, "SMBnttrans", 0, DEFDESCRIPT },
761 { SMBnttranss, "SMBnttranss", 0, DEFDESCRIPT },
762
763 { SMBntcreateX, "SMBntcreateX", FLG_CHAIN,
764 { "Com2=[w]\nOff2=[u]\nRes=[b]\nNameLen=[lu]\nFlags=[W]\nRootDirectoryFid=[U]\nAccessMask=[W]\nAllocationSize=[L]\nExtFileAttributes=[W]\nShareAccess=[W]\nCreateDisposition=[W]\nCreateOptions=[W]\nImpersonationLevel=[W]\nSecurityFlags=[b]\n",
765 "Path=[C]\n",
766 "Com2=[w]\nOff2=[u]\nOplockLevel=[b]\nFid=[u]\nCreateAction=[W]\nCreateTime=[T3]LastAccessTime=[T3]LastWriteTime=[T3]ChangeTime=[T3]ExtFileAttributes=[W]\nAllocationSize=[L]\nEndOfFile=[L]\nFileType=[w]\nDeviceState=[w]\nDirectory=[b]\n",
767 NULL, NULL } },
768
769 { SMBntcancel, "SMBntcancel", 0, DEFDESCRIPT },
770
771 { -1, NULL, 0, DEFDESCRIPT }
772 };
773
774
775 /*
776 * print a SMB message
777 */
778 static void
print_smb(netdissect_options * ndo,const u_char * buf,const u_char * maxbuf)779 print_smb(netdissect_options *ndo,
780 const u_char *buf, const u_char *maxbuf)
781 {
782 uint16_t flags2;
783 u_int nterrcodes;
784 u_int command;
785 uint32_t nterror;
786 const u_char *words, *maxwords, *data;
787 const struct smbfns *fn;
788 const char *fmt_smbheader =
789 "[P4]SMB Command = [B]\nError class = [BP1]\nError code = [u]\nFlags1 = [B]\nFlags2 = [B][P13]\nTree ID = [u]\nProc ID = [u]\nUID = [u]\nMID = [u]\nWord Count = [b]\n";
790 u_int smboffset;
791
792 ndo->ndo_protocol = "smb";
793
794 request = (GET_U_1(buf + 9) & 0x80) ? 0 : 1;
795 startbuf = buf;
796
797 command = GET_U_1(buf + 4);
798
799 fn = smbfind(command, smb_fns);
800
801 if (ndo->ndo_vflag > 1)
802 ND_PRINT("\n");
803
804 ND_PRINT("SMB PACKET: %s (%s)", fn->name, request ? "REQUEST" : "REPLY");
805
806 if (ndo->ndo_vflag < 2)
807 return;
808
809 ND_PRINT("\n");
810 flags2 = GET_LE_U_2(buf + 10);
811 unicodestr = flags2 & 0x8000;
812 nterrcodes = flags2 & 0x4000;
813
814 /* print out the header */
815 smb_fdata(ndo, buf, fmt_smbheader, buf + 33, unicodestr);
816
817 if (nterrcodes) {
818 nterror = GET_LE_U_4(buf + 5);
819 if (nterror)
820 ND_PRINT("NTError = %s\n", nt_errstr(nterror));
821 } else {
822 if (GET_U_1(buf + 5))
823 ND_PRINT("SMBError = %s\n", smb_errstr(GET_U_1(buf + 5),
824 GET_LE_U_2(buf + 7)));
825 }
826
827 smboffset = 32;
828
829 for (;;) {
830 const char *f1, *f2;
831 int wct;
832 u_int bcc;
833 u_int newsmboffset;
834
835 words = buf + smboffset;
836 wct = GET_U_1(words);
837 data = words + 1 + wct * 2;
838 maxwords = ND_MIN(data, maxbuf);
839
840 if (request) {
841 f1 = fn->descript.req_f1;
842 f2 = fn->descript.req_f2;
843 } else {
844 f1 = fn->descript.rep_f1;
845 f2 = fn->descript.rep_f2;
846 }
847
848 smb_reset();
849 if (fn->descript.fn)
850 (*fn->descript.fn)(ndo, words, data, buf, maxbuf);
851 else {
852 if (wct) {
853 if (f1)
854 smb_fdata(ndo, words + 1, f1, words + 1 + wct * 2, unicodestr);
855 else {
856 u_int i;
857 u_int v;
858
859 for (i = 0; words + 1 + 2 * i < maxwords; i++) {
860 v = GET_LE_U_2(words + 1 + 2 * i);
861 ND_PRINT("smb_vwv[%u]=%u (0x%X)\n", i, v, v);
862 }
863 }
864 }
865
866 bcc = GET_LE_U_2(data);
867 ND_PRINT("smb_bcc=%u\n", bcc);
868 if (f2) {
869 if (bcc > 0)
870 smb_fdata(ndo, data + 2, f2, data + 2 + bcc, unicodestr);
871 } else {
872 if (bcc > 0) {
873 ND_PRINT("smb_buf[]=\n");
874 smb_data_print(ndo, data + 2,
875 ND_MIN(bcc, ND_BYTES_BETWEEN(data + 2, maxbuf)));
876 }
877 }
878 }
879
880 if ((fn->flags & FLG_CHAIN) == 0)
881 break;
882 if (wct == 0)
883 break;
884 command = GET_U_1(words + 1);
885 if (command == 0xFF)
886 break;
887 newsmboffset = GET_LE_U_2(words + 3);
888
889 fn = smbfind(command, smb_fns);
890
891 ND_PRINT("\nSMB PACKET: %s (%s) (CHAINED)\n",
892 fn->name, request ? "REQUEST" : "REPLY");
893 if (newsmboffset <= smboffset) {
894 ND_PRINT("Bad andX offset: %u <= %u\n", newsmboffset, smboffset);
895 break;
896 }
897 smboffset = newsmboffset;
898 }
899 }
900
901
902 /*
903 * print a NBT packet received across tcp on port 139
904 */
905 void
nbt_tcp_print(netdissect_options * ndo,const u_char * data,u_int length)906 nbt_tcp_print(netdissect_options *ndo,
907 const u_char *data, u_int length)
908 {
909 u_int caplen;
910 u_int type;
911 u_int nbt_len;
912 const u_char *maxbuf;
913
914 ndo->ndo_protocol = "nbt_tcp";
915 if (length < 4)
916 goto trunc;
917 if (ndo->ndo_snapend < data)
918 goto trunc;
919 caplen = ND_BYTES_AVAILABLE_AFTER(data);
920 if (caplen < 4)
921 goto trunc;
922 maxbuf = data + caplen;
923 type = GET_U_1(data);
924 nbt_len = GET_BE_U_2(data + 2);
925 length -= 4;
926 caplen -= 4;
927
928 startbuf = data;
929
930 if (ndo->ndo_vflag < 2) {
931 ND_PRINT(" NBT Session Packet: ");
932 switch (type) {
933 case 0x00:
934 ND_PRINT("Session Message");
935 break;
936
937 case 0x81:
938 ND_PRINT("Session Request");
939 break;
940
941 case 0x82:
942 ND_PRINT("Session Granted");
943 break;
944
945 case 0x83:
946 {
947 u_int ecode;
948
949 if (nbt_len < 4)
950 goto trunc;
951 if (length < 4)
952 goto trunc;
953 if (caplen < 4)
954 goto trunc;
955 ecode = GET_U_1(data + 4);
956
957 ND_PRINT("Session Reject, ");
958 switch (ecode) {
959 case 0x80:
960 ND_PRINT("Not listening on called name");
961 break;
962 case 0x81:
963 ND_PRINT("Not listening for calling name");
964 break;
965 case 0x82:
966 ND_PRINT("Called name not present");
967 break;
968 case 0x83:
969 ND_PRINT("Called name present, but insufficient resources");
970 break;
971 default:
972 ND_PRINT("Unspecified error 0x%X", ecode);
973 break;
974 }
975 }
976 break;
977
978 case 0x85:
979 ND_PRINT("Session Keepalive");
980 break;
981
982 default:
983 data = smb_fdata(ndo, data, "Unknown packet type [rB]", maxbuf, 0);
984 break;
985 }
986 } else {
987 ND_PRINT("\n>>> NBT Session Packet\n");
988 switch (type) {
989 case 0x00:
990 data = smb_fdata(ndo, data, "[P1]NBT Session Message\nFlags=[B]\nLength=[ru]\n",
991 data + 4, 0);
992 if (data == NULL)
993 break;
994 if (nbt_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
995 if (nbt_len > caplen) {
996 if (nbt_len > length)
997 ND_PRINT("WARNING: Packet is continued in later TCP segments\n");
998 else
999 ND_PRINT("WARNING: Short packet. Try increasing the snap length by %u\n",
1000 nbt_len - caplen);
1001 }
1002 print_smb(ndo, data, maxbuf > data + nbt_len ? data + nbt_len : maxbuf);
1003 } else
1004 ND_PRINT("Session packet:(raw data or continuation?)\n");
1005 break;
1006
1007 case 0x81:
1008 data = smb_fdata(ndo, data,
1009 "[P1]NBT Session Request\nFlags=[B]\nLength=[ru]\nDestination=[n1]\nSource=[n1]\n",
1010 maxbuf, 0);
1011 break;
1012
1013 case 0x82:
1014 data = smb_fdata(ndo, data, "[P1]NBT Session Granted\nFlags=[B]\nLength=[ru]\n", maxbuf, 0);
1015 break;
1016
1017 case 0x83:
1018 {
1019 const u_char *origdata;
1020 u_int ecode;
1021
1022 origdata = data;
1023 data = smb_fdata(ndo, data, "[P1]NBT SessionReject\nFlags=[B]\nLength=[ru]\nReason=[B]\n",
1024 maxbuf, 0);
1025 if (data == NULL)
1026 break;
1027 if (nbt_len >= 1 && caplen >= 1) {
1028 ecode = GET_U_1(origdata + 4);
1029 switch (ecode) {
1030 case 0x80:
1031 ND_PRINT("Not listening on called name\n");
1032 break;
1033 case 0x81:
1034 ND_PRINT("Not listening for calling name\n");
1035 break;
1036 case 0x82:
1037 ND_PRINT("Called name not present\n");
1038 break;
1039 case 0x83:
1040 ND_PRINT("Called name present, but insufficient resources\n");
1041 break;
1042 default:
1043 ND_PRINT("Unspecified error 0x%X\n", ecode);
1044 break;
1045 }
1046 }
1047 }
1048 break;
1049
1050 case 0x85:
1051 data = smb_fdata(ndo, data, "[P1]NBT Session Keepalive\nFlags=[B]\nLength=[ru]\n", maxbuf, 0);
1052 break;
1053
1054 default:
1055 data = smb_fdata(ndo, data, "NBT - Unknown packet type\nType=[B]\n", maxbuf, 0);
1056 break;
1057 }
1058 }
1059 return;
1060 trunc:
1061 nd_print_trunc(ndo);
1062 }
1063
1064 static const struct tok opcode_str[] = {
1065 { 0, "QUERY" },
1066 { 5, "REGISTRATION" },
1067 { 6, "RELEASE" },
1068 { 7, "WACK" },
1069 { 8, "REFRESH(8)" },
1070 { 9, "REFRESH" },
1071 { 15, "MULTIHOMED REGISTRATION" },
1072 { 0, NULL }
1073 };
1074
1075 /*
1076 * print a NBT packet received across udp on port 137
1077 */
1078 void
nbt_udp137_print(netdissect_options * ndo,const u_char * data,u_int length)1079 nbt_udp137_print(netdissect_options *ndo,
1080 const u_char *data, u_int length)
1081 {
1082 const u_char *maxbuf = data + length;
1083 u_int name_trn_id, response, opcode, nm_flags, rcode;
1084 u_int qdcount, ancount, nscount, arcount;
1085 const u_char *p;
1086 u_int total, i;
1087
1088 ndo->ndo_protocol = "nbt_udp137";
1089 name_trn_id = GET_BE_U_2(data);
1090 response = (GET_U_1(data + 2) >> 7);
1091 opcode = (GET_U_1(data + 2) >> 3) & 0xF;
1092 nm_flags = ((GET_U_1(data + 2) & 0x7) << 4) + (GET_U_1(data + 3) >> 4);
1093 rcode = GET_U_1(data + 3) & 0xF;
1094 qdcount = GET_BE_U_2(data + 4);
1095 ancount = GET_BE_U_2(data + 6);
1096 nscount = GET_BE_U_2(data + 8);
1097 arcount = GET_BE_U_2(data + 10);
1098 startbuf = data;
1099
1100 if (maxbuf <= data)
1101 return;
1102
1103 if (ndo->ndo_vflag > 1)
1104 ND_PRINT("\n>>> ");
1105
1106 ND_PRINT("NBT UDP PACKET(137): %s", tok2str(opcode_str, "OPUNKNOWN", opcode));
1107 if (response) {
1108 ND_PRINT("; %s", rcode ? "NEGATIVE" : "POSITIVE");
1109 }
1110 ND_PRINT("; %s; %s", response ? "RESPONSE" : "REQUEST",
1111 (nm_flags & 1) ? "BROADCAST" : "UNICAST");
1112
1113 if (ndo->ndo_vflag < 2)
1114 return;
1115
1116 ND_PRINT("\nTrnID=0x%X\nOpCode=%u\nNmFlags=0x%X\nRcode=%u\nQueryCount=%u\nAnswerCount=%u\nAuthorityCount=%u\nAddressRecCount=%u\n",
1117 name_trn_id, opcode, nm_flags, rcode, qdcount, ancount, nscount,
1118 arcount);
1119
1120 p = data + 12;
1121
1122 total = ancount + nscount + arcount;
1123
1124 if (qdcount > 100 || total > 100) {
1125 ND_PRINT("Corrupt packet??\n");
1126 return;
1127 }
1128
1129 if (qdcount) {
1130 ND_PRINT("QuestionRecords:\n");
1131 for (i = 0; i < qdcount; i++) {
1132 p = smb_fdata(ndo, p,
1133 "|Name=[n1]\nQuestionType=[rw]\nQuestionClass=[rw]\n#",
1134 maxbuf, 0);
1135 if (p == NULL)
1136 goto out;
1137 }
1138 }
1139
1140 if (total) {
1141 ND_PRINT("\nResourceRecords:\n");
1142 for (i = 0; i < total; i++) {
1143 u_int rdlen;
1144 u_int restype;
1145
1146 p = smb_fdata(ndo, p, "Name=[n1]\n#", maxbuf, 0);
1147 if (p == NULL)
1148 goto out;
1149 restype = GET_BE_U_2(p);
1150 p = smb_fdata(ndo, p, "ResType=[rw]\nResClass=[rw]\nTTL=[rU]\n", p + 8, 0);
1151 if (p == NULL)
1152 goto out;
1153 rdlen = GET_BE_U_2(p);
1154 ND_PRINT("ResourceLength=%u\nResourceData=\n", rdlen);
1155 p += 2;
1156 if (rdlen == 6) {
1157 p = smb_fdata(ndo, p, "AddrType=[rw]\nAddress=[b.b.b.b]\n", p + rdlen, 0);
1158 if (p == NULL)
1159 goto out;
1160 } else {
1161 if (restype == 0x21) {
1162 u_int numnames;
1163
1164 numnames = GET_U_1(p);
1165 p = smb_fdata(ndo, p, "NumNames=[B]\n", p + 1, 0);
1166 if (p == NULL)
1167 goto out;
1168 while (numnames) {
1169 p = smb_fdata(ndo, p, "Name=[n2]\t#", maxbuf, 0);
1170 if (p == NULL)
1171 goto out;
1172 ND_TCHECK_1(p);
1173 if (p >= maxbuf)
1174 goto out;
1175 if (GET_U_1(p) & 0x80)
1176 ND_PRINT("<GROUP> ");
1177 switch (GET_U_1(p) & 0x60) {
1178 case 0x00: ND_PRINT("B "); break;
1179 case 0x20: ND_PRINT("P "); break;
1180 case 0x40: ND_PRINT("M "); break;
1181 case 0x60: ND_PRINT("_ "); break;
1182 }
1183 if (GET_U_1(p) & 0x10)
1184 ND_PRINT("<DEREGISTERING> ");
1185 if (GET_U_1(p) & 0x08)
1186 ND_PRINT("<CONFLICT> ");
1187 if (GET_U_1(p) & 0x04)
1188 ND_PRINT("<ACTIVE> ");
1189 if (GET_U_1(p) & 0x02)
1190 ND_PRINT("<PERMANENT> ");
1191 ND_PRINT("\n");
1192 p += 2;
1193 numnames--;
1194 }
1195 } else {
1196 if (p >= maxbuf)
1197 goto out;
1198 smb_data_print(ndo, p,
1199 ND_MIN(rdlen, length - ND_BYTES_BETWEEN(data, p)));
1200 p += rdlen;
1201 }
1202 }
1203 }
1204 }
1205
1206 if (p < maxbuf)
1207 smb_fdata(ndo, p, "AdditionalData:\n", maxbuf, 0);
1208
1209 out:
1210 return;
1211 trunc:
1212 nd_print_trunc(ndo);
1213 }
1214
1215 /*
1216 * Print an SMB-over-TCP packet received across tcp on port 445
1217 */
1218 void
smb_tcp_print(netdissect_options * ndo,const u_char * data,u_int length)1219 smb_tcp_print(netdissect_options *ndo,
1220 const u_char * data, u_int length)
1221 {
1222 u_int caplen;
1223 u_int smb_len;
1224 const u_char *maxbuf;
1225
1226 ndo->ndo_protocol = "smb_tcp";
1227 if (length < 4)
1228 goto trunc;
1229 if (ndo->ndo_snapend < data)
1230 goto trunc;
1231 caplen = ND_BYTES_AVAILABLE_AFTER(data);
1232 if (caplen < 4)
1233 goto trunc;
1234 maxbuf = data + caplen;
1235 smb_len = GET_BE_U_3(data + 1);
1236 length -= 4;
1237 caplen -= 4;
1238
1239 startbuf = data;
1240 data += 4;
1241
1242 if (smb_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1243 if (smb_len > caplen) {
1244 if (smb_len > length)
1245 ND_PRINT(" WARNING: Packet is continued in later TCP segments\n");
1246 else
1247 ND_PRINT(" WARNING: Short packet. Try increasing the snap length by %u\n",
1248 smb_len - caplen);
1249 } else
1250 ND_PRINT(" ");
1251 print_smb(ndo, data, maxbuf > data + smb_len ? data + smb_len : maxbuf);
1252 } else
1253 ND_PRINT(" SMB-over-TCP packet:(raw data or continuation?)\n");
1254 return;
1255 trunc:
1256 nd_print_trunc(ndo);
1257 }
1258
1259 /*
1260 * print a NBT packet received across udp on port 138
1261 */
1262 void
nbt_udp138_print(netdissect_options * ndo,const u_char * data,u_int length)1263 nbt_udp138_print(netdissect_options *ndo,
1264 const u_char *data, u_int length)
1265 {
1266 const u_char *maxbuf = data + length;
1267
1268 ndo->ndo_protocol = "nbt_udp138";
1269 if (maxbuf > ndo->ndo_snapend)
1270 maxbuf = ndo->ndo_snapend;
1271 if (maxbuf <= data)
1272 return;
1273 startbuf = data;
1274
1275 if (ndo->ndo_vflag < 2) {
1276 ND_PRINT("NBT UDP PACKET(138)");
1277 return;
1278 }
1279
1280 data = smb_fdata(ndo, data,
1281 "\n>>> NBT UDP PACKET(138) Res=[rw] ID=[rw] IP=[b.b.b.b] Port=[ru] Length=[ru] Res2=[rw]\nSourceName=[n1]\nDestName=[n1]\n#",
1282 maxbuf, 0);
1283
1284 if (data != NULL) {
1285 /* If there isn't enough data for "\377SMB", don't check for it. */
1286 if ((data + 3) >= maxbuf)
1287 goto out;
1288
1289 if (memcmp(data, "\377SMB",4) == 0)
1290 print_smb(ndo, data, maxbuf);
1291 }
1292 out:
1293 return;
1294 }
1295
1296
1297 /*
1298 print netbeui frames
1299 */
1300 static struct nbf_strings {
1301 const char *name;
1302 const char *nonverbose;
1303 const char *verbose;
1304 } nbf_strings[0x20] = {
1305 { "Add Group Name Query", ", [P23]Name to add=[n2]#",
1306 "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1307 { "Add Name Query", ", [P23]Name to add=[n2]#",
1308 "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1309 { "Name In Conflict", NULL, NULL },
1310 { "Status Query", NULL, NULL },
1311 { NULL, NULL, NULL }, /* not used */
1312 { NULL, NULL, NULL }, /* not used */
1313 { NULL, NULL, NULL }, /* not used */
1314 { "Terminate Trace", NULL, NULL },
1315 { "Datagram", NULL,
1316 "[P7]Destination=[n2]\nSource=[n2]\n" },
1317 { "Broadcast Datagram", NULL,
1318 "[P7]Destination=[n2]\nSource=[n2]\n" },
1319 { "Name Query", ", [P7]Name=[n2]#",
1320 "[P1]SessionNumber=[B]\nNameType=[B][P2]\nResponseCorrelator=[w]\nName=[n2]\nName of sender=[n2]\n" },
1321 { NULL, NULL, NULL }, /* not used */
1322 { NULL, NULL, NULL }, /* not used */
1323 { "Add Name Response", ", [P1]GroupName=[w] [P4]Destination=[n2] Source=[n2]#",
1324 "AddNameInProcess=[B]\nGroupName=[w]\nTransmitCorrelator=[w][P2]\nDestination=[n2]\nSource=[n2]\n" },
1325 { "Name Recognized", NULL,
1326 "[P1]Data2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nDestination=[n2]\nSource=[n2]\n" },
1327 { "Status Response", NULL, NULL },
1328 { NULL, NULL, NULL }, /* not used */
1329 { NULL, NULL, NULL }, /* not used */
1330 { NULL, NULL, NULL }, /* not used */
1331 { "Terminate Trace", NULL, NULL },
1332 { "Data Ack", NULL,
1333 "[P3]TransmitCorrelator=[w][P2]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1334 { "Data First/Middle", NULL,
1335 "Flags=[{RECEIVE_CONTINUE|NO_ACK||PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1336 { "Data Only/Last", NULL,
1337 "Flags=[{|NO_ACK|PIGGYBACK_ACK_ALLOWED|PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1338 { "Session Confirm", NULL,
1339 "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1340 { "Session End", NULL,
1341 "[P1]Data2=[w][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1342 { "Session Initialize", NULL,
1343 "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1344 { "No Receive", NULL,
1345 "Flags=[{|SEND_NO_ACK}]\nDataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1346 { "Receive Outstanding", NULL,
1347 "[P1]DataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1348 { "Receive Continue", NULL,
1349 "[P2]TransmitCorrelator=[w]\n[P2]RemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1350 { NULL, NULL, NULL }, /* not used */
1351 { NULL, NULL, NULL }, /* not used */
1352 { "Session Alive", NULL, NULL }
1353 };
1354
1355 void
netbeui_print(netdissect_options * ndo,u_short control,const u_char * data,u_int length)1356 netbeui_print(netdissect_options *ndo,
1357 u_short control, const u_char *data, u_int length)
1358 {
1359 const u_char *maxbuf = data + length;
1360 u_int len;
1361 u_int command;
1362 const u_char *data2;
1363 int is_truncated = 0;
1364
1365 ndo->ndo_protocol = "netbeui";
1366 if (maxbuf > ndo->ndo_snapend)
1367 maxbuf = ndo->ndo_snapend;
1368 len = GET_LE_U_2(data);
1369 command = GET_U_1(data + 4);
1370 data2 = data + len;
1371 if (data2 >= maxbuf) {
1372 data2 = maxbuf;
1373 is_truncated = 1;
1374 }
1375
1376 startbuf = data;
1377
1378 if (ndo->ndo_vflag < 2) {
1379 ND_PRINT("NBF Packet: ");
1380 data = smb_fdata(ndo, data, "[P5]#", maxbuf, 0);
1381 } else {
1382 ND_PRINT("\n>>> NBF Packet\nType=0x%X ", control);
1383 data = smb_fdata(ndo, data, "Length=[u] Signature=[w] Command=[B]\n#", maxbuf, 0);
1384 }
1385 if (data == NULL)
1386 goto out;
1387
1388 if (command > 0x1f || nbf_strings[command].name == NULL) {
1389 if (ndo->ndo_vflag < 2)
1390 data = smb_fdata(ndo, data, "Unknown NBF Command#", data2, 0);
1391 else
1392 data = smb_fdata(ndo, data, "Unknown NBF Command\n", data2, 0);
1393 } else {
1394 if (ndo->ndo_vflag < 2) {
1395 ND_PRINT("%s", nbf_strings[command].name);
1396 if (nbf_strings[command].nonverbose != NULL)
1397 data = smb_fdata(ndo, data, nbf_strings[command].nonverbose, data2, 0);
1398 } else {
1399 ND_PRINT("%s:\n", nbf_strings[command].name);
1400 if (nbf_strings[command].verbose != NULL)
1401 data = smb_fdata(ndo, data, nbf_strings[command].verbose, data2, 0);
1402 else
1403 ND_PRINT("\n");
1404 }
1405 }
1406
1407 if (ndo->ndo_vflag < 2)
1408 return;
1409
1410 if (data == NULL)
1411 goto out;
1412
1413 if (is_truncated) {
1414 /* data2 was past the end of the buffer */
1415 goto out;
1416 }
1417
1418 /* If this isn't a command that would contain an SMB message, quit. */
1419 if (command != 0x08 && command != 0x09 && command != 0x15 &&
1420 command != 0x16)
1421 goto out;
1422
1423 /* If there isn't enough data for "\377SMB", don't look for it. */
1424 if ((data2 + 3) >= maxbuf)
1425 goto out;
1426
1427 if (memcmp(data2, "\377SMB",4) == 0)
1428 print_smb(ndo, data2, maxbuf);
1429 else {
1430 u_int i;
1431 for (i = 0; i < 128; i++) {
1432 if ((data2 + i + 3) >= maxbuf)
1433 break;
1434 if (memcmp(data2 + i, "\377SMB", 4) == 0) {
1435 ND_PRINT("found SMB packet at %u\n", i);
1436 print_smb(ndo, data2 + i, maxbuf);
1437 break;
1438 }
1439 }
1440 }
1441
1442 out:
1443 return;
1444 }
1445
1446
1447 /*
1448 * print IPX-Netbios frames
1449 */
1450 void
ipx_netbios_print(netdissect_options * ndo,const u_char * data,u_int length)1451 ipx_netbios_print(netdissect_options *ndo,
1452 const u_char *data, u_int length)
1453 {
1454 /*
1455 * this is a hack till I work out how to parse the rest of the
1456 * NetBIOS-over-IPX stuff
1457 */
1458 u_int i;
1459 const u_char *maxbuf;
1460
1461 ndo->ndo_protocol = "ipx_netbios";
1462 maxbuf = data + length;
1463 /* Don't go past the end of the captured data in the packet. */
1464 if (maxbuf > ndo->ndo_snapend)
1465 maxbuf = ndo->ndo_snapend;
1466 startbuf = data;
1467 for (i = 0; i < 128; i++) {
1468 if ((data + i + 4) > maxbuf)
1469 break;
1470 if (memcmp(data + i, "\377SMB", 4) == 0) {
1471 smb_fdata(ndo, data, "\n>>> IPX transport ", data + i, 0);
1472 print_smb(ndo, data + i, maxbuf);
1473 break;
1474 }
1475 }
1476 if (i == 128)
1477 smb_fdata(ndo, data, "\n>>> Unknown IPX ", maxbuf, 0);
1478 }
1479