1 /*
2 * Copyright (C) Andrew Tridgell 1995-1999
3 *
4 * This software may be distributed either under the terms of the
5 * BSD-style license that accompanies tcpdump or the GNU GPL version 2
6 * or later
7 */
8
9 /* \summary: SMB/CIFS printer */
10
11 #ifdef HAVE_CONFIG_H
12 #include "config.h"
13 #endif
14
15 #include <netdissect-stdinc.h>
16
17 #include <string.h>
18
19 #include "netdissect.h"
20 #include "extract.h"
21 #include "smb.h"
22
23 static const char tstr[] = "[|SMB]";
24
25 static int request = 0;
26 static int unicodestr = 0;
27
28 const u_char *startbuf = NULL;
29
30 struct smbdescript {
31 const char *req_f1;
32 const char *req_f2;
33 const char *rep_f1;
34 const char *rep_f2;
35 void (*fn)(netdissect_options *, const u_char *, const u_char *, const u_char *, const u_char *);
36 };
37
38 struct smbdescriptint {
39 const char *req_f1;
40 const char *req_f2;
41 const char *rep_f1;
42 const char *rep_f2;
43 void (*fn)(netdissect_options *, const u_char *, const u_char *, int, int);
44 };
45
46 struct smbfns
47 {
48 int id;
49 const char *name;
50 int flags;
51 struct smbdescript descript;
52 };
53
54 struct smbfnsint
55 {
56 int id;
57 const char *name;
58 int flags;
59 struct smbdescriptint descript;
60 };
61
62 #define DEFDESCRIPT { NULL, NULL, NULL, NULL, NULL }
63
64 #define FLG_CHAIN (1 << 0)
65
66 static const struct smbfns *
smbfind(int id,const struct smbfns * list)67 smbfind(int id, const struct smbfns *list)
68 {
69 int sindex;
70
71 for (sindex = 0; list[sindex].name; sindex++)
72 if (list[sindex].id == id)
73 return(&list[sindex]);
74
75 return(&list[0]);
76 }
77
78 static const struct smbfnsint *
smbfindint(int id,const struct smbfnsint * list)79 smbfindint(int id, const struct smbfnsint *list)
80 {
81 int sindex;
82
83 for (sindex = 0; list[sindex].name; sindex++)
84 if (list[sindex].id == id)
85 return(&list[sindex]);
86
87 return(&list[0]);
88 }
89
90 static void
trans2_findfirst(netdissect_options * ndo,const u_char * param,const u_char * data,int pcnt,int dcnt)91 trans2_findfirst(netdissect_options *ndo,
92 const u_char *param, const u_char *data, int pcnt, int dcnt)
93 {
94 const char *fmt;
95
96 if (request)
97 fmt = "Attribute=[A]\nSearchCount=[d]\nFlags=[w]\nLevel=[dP4]\nFile=[S]\n";
98 else
99 fmt = "Handle=[w]\nCount=[d]\nEOS=[w]\nEoffset=[d]\nLastNameOfs=[w]\n";
100
101 smb_fdata(ndo, param, fmt, param + pcnt, unicodestr);
102 if (dcnt) {
103 ND_PRINT((ndo, "data:\n"));
104 smb_print_data(ndo, data, dcnt);
105 }
106 }
107
108 static void
trans2_qfsinfo(netdissect_options * ndo,const u_char * param,const u_char * data,int pcnt,int dcnt)109 trans2_qfsinfo(netdissect_options *ndo,
110 const u_char *param, const u_char *data, int pcnt, int dcnt)
111 {
112 static int level = 0;
113 const char *fmt="";
114
115 if (request) {
116 ND_TCHECK2(*param, 2);
117 level = EXTRACT_LE_16BITS(param);
118 fmt = "InfoLevel=[d]\n";
119 smb_fdata(ndo, param, fmt, param + pcnt, unicodestr);
120 } else {
121 switch (level) {
122 case 1:
123 fmt = "idFileSystem=[W]\nSectorUnit=[D]\nUnit=[D]\nAvail=[D]\nSectorSize=[d]\n";
124 break;
125 case 2:
126 fmt = "CreationTime=[T2]VolNameLength=[lb]\nVolumeLabel=[c]\n";
127 break;
128 case 0x105:
129 fmt = "Capabilities=[W]\nMaxFileLen=[D]\nVolNameLen=[lD]\nVolume=[C]\n";
130 break;
131 default:
132 fmt = "UnknownLevel\n";
133 break;
134 }
135 smb_fdata(ndo, data, fmt, data + dcnt, unicodestr);
136 }
137 if (dcnt) {
138 ND_PRINT((ndo, "data:\n"));
139 smb_print_data(ndo, data, dcnt);
140 }
141 return;
142 trunc:
143 ND_PRINT((ndo, "%s", tstr));
144 }
145
146 static const struct smbfnsint trans2_fns[] = {
147 { 0, "TRANSACT2_OPEN", 0,
148 { "Flags2=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]\nOFun=[w]\nSize=[D]\nRes=([w, w, w, w, w])\nPath=[S]",
149 NULL,
150 "Handle=[d]\nAttrib=[A]\nTime=[T2]\nSize=[D]\nAccess=[w]\nType=[w]\nState=[w]\nAction=[w]\nInode=[W]\nOffErr=[d]\n|EALength=[d]\n",
151 NULL, NULL }},
152 { 1, "TRANSACT2_FINDFIRST", 0,
153 { NULL, NULL, NULL, NULL, trans2_findfirst }},
154 { 2, "TRANSACT2_FINDNEXT", 0, DEFDESCRIPT },
155 { 3, "TRANSACT2_QFSINFO", 0,
156 { NULL, NULL, NULL, NULL, trans2_qfsinfo }},
157 { 4, "TRANSACT2_SETFSINFO", 0, DEFDESCRIPT },
158 { 5, "TRANSACT2_QPATHINFO", 0, DEFDESCRIPT },
159 { 6, "TRANSACT2_SETPATHINFO", 0, DEFDESCRIPT },
160 { 7, "TRANSACT2_QFILEINFO", 0, DEFDESCRIPT },
161 { 8, "TRANSACT2_SETFILEINFO", 0, DEFDESCRIPT },
162 { 9, "TRANSACT2_FSCTL", 0, DEFDESCRIPT },
163 { 10, "TRANSACT2_IOCTL", 0, DEFDESCRIPT },
164 { 11, "TRANSACT2_FINDNOTIFYFIRST", 0, DEFDESCRIPT },
165 { 12, "TRANSACT2_FINDNOTIFYNEXT", 0, DEFDESCRIPT },
166 { 13, "TRANSACT2_MKDIR", 0, DEFDESCRIPT },
167 { -1, NULL, 0, DEFDESCRIPT }
168 };
169
170
171 static void
print_trans2(netdissect_options * ndo,const u_char * words,const u_char * dat,const u_char * buf,const u_char * maxbuf)172 print_trans2(netdissect_options *ndo,
173 const u_char *words, const u_char *dat, const u_char *buf, const u_char *maxbuf)
174 {
175 u_int bcc;
176 static const struct smbfnsint *fn = &trans2_fns[0];
177 const u_char *data, *param;
178 const u_char *w = words + 1;
179 const char *f1 = NULL, *f2 = NULL;
180 int pcnt, dcnt;
181
182 ND_TCHECK(words[0]);
183 if (request) {
184 ND_TCHECK2(w[14 * 2], 2);
185 pcnt = EXTRACT_LE_16BITS(w + 9 * 2);
186 param = buf + EXTRACT_LE_16BITS(w + 10 * 2);
187 dcnt = EXTRACT_LE_16BITS(w + 11 * 2);
188 data = buf + EXTRACT_LE_16BITS(w + 12 * 2);
189 fn = smbfindint(EXTRACT_LE_16BITS(w + 14 * 2), trans2_fns);
190 } else {
191 if (words[0] == 0) {
192 ND_PRINT((ndo, "%s\n", fn->name));
193 ND_PRINT((ndo, "Trans2Interim\n"));
194 return;
195 }
196 ND_TCHECK2(w[7 * 2], 2);
197 pcnt = EXTRACT_LE_16BITS(w + 3 * 2);
198 param = buf + EXTRACT_LE_16BITS(w + 4 * 2);
199 dcnt = EXTRACT_LE_16BITS(w + 6 * 2);
200 data = buf + EXTRACT_LE_16BITS(w + 7 * 2);
201 }
202
203 ND_PRINT((ndo, "%s param_length=%d data_length=%d\n", fn->name, pcnt, dcnt));
204
205 if (request) {
206 if (words[0] == 8) {
207 smb_fdata(ndo, words + 1,
208 "Trans2Secondary\nTotParam=[d]\nTotData=[d]\nParamCnt=[d]\nParamOff=[d]\nParamDisp=[d]\nDataCnt=[d]\nDataOff=[d]\nDataDisp=[d]\nHandle=[d]\n",
209 maxbuf, unicodestr);
210 return;
211 } else {
212 smb_fdata(ndo, words + 1,
213 "TotParam=[d]\nTotData=[d]\nMaxParam=[d]\nMaxData=[d]\nMaxSetup=[b][P1]\nFlags=[w]\nTimeOut=[D]\nRes1=[w]\nParamCnt=[d]\nParamOff=[d]\nDataCnt=[d]\nDataOff=[d]\nSetupCnt=[b][P1]\n",
214 words + 1 + 14 * 2, unicodestr);
215 }
216 f1 = fn->descript.req_f1;
217 f2 = fn->descript.req_f2;
218 } else {
219 smb_fdata(ndo, words + 1,
220 "TotParam=[d]\nTotData=[d]\nRes1=[w]\nParamCnt=[d]\nParamOff=[d]\nParamDisp[d]\nDataCnt=[d]\nDataOff=[d]\nDataDisp=[d]\nSetupCnt=[b][P1]\n",
221 words + 1 + 10 * 2, unicodestr);
222 f1 = fn->descript.rep_f1;
223 f2 = fn->descript.rep_f2;
224 }
225
226 ND_TCHECK2(*dat, 2);
227 bcc = EXTRACT_LE_16BITS(dat);
228 ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
229 if (fn->descript.fn)
230 (*fn->descript.fn)(ndo, param, data, pcnt, dcnt);
231 else {
232 smb_fdata(ndo, param, f1 ? f1 : "Parameters=\n", param + pcnt, unicodestr);
233 smb_fdata(ndo, data, f2 ? f2 : "Data=\n", data + dcnt, unicodestr);
234 }
235 return;
236 trunc:
237 ND_PRINT((ndo, "%s", tstr));
238 }
239
240 static void
print_browse(netdissect_options * ndo,const u_char * param,int paramlen,const u_char * data,int datalen)241 print_browse(netdissect_options *ndo,
242 const u_char *param, int paramlen, const u_char *data, int datalen)
243 {
244 const u_char *maxbuf = data + datalen;
245 int command;
246
247 ND_TCHECK(data[0]);
248 command = data[0];
249
250 smb_fdata(ndo, param, "BROWSE PACKET\n|Param ", param+paramlen, unicodestr);
251
252 switch (command) {
253 case 0xF:
254 data = smb_fdata(ndo, data,
255 "BROWSE PACKET:\nType=[B] (LocalMasterAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[d]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nElectionVersion=[w]\nBrowserConstant=[w]\n",
256 maxbuf, unicodestr);
257 break;
258
259 case 0x1:
260 data = smb_fdata(ndo, data,
261 "BROWSE PACKET:\nType=[B] (HostAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[d]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nElectionVersion=[w]\nBrowserConstant=[w]\n",
262 maxbuf, unicodestr);
263 break;
264
265 case 0x2:
266 data = smb_fdata(ndo, data,
267 "BROWSE PACKET:\nType=[B] (AnnouncementRequest)\nFlags=[B]\nReplySystemName=[S]\n",
268 maxbuf, unicodestr);
269 break;
270
271 case 0xc:
272 data = smb_fdata(ndo, data,
273 "BROWSE PACKET:\nType=[B] (WorkgroupAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[d]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nCommentPointer=[W]\nServerName=[S]\n",
274 maxbuf, unicodestr);
275 break;
276
277 case 0x8:
278 data = smb_fdata(ndo, data,
279 "BROWSE PACKET:\nType=[B] (ElectionFrame)\nElectionVersion=[B]\nOSSummary=[W]\nUptime=[(W, W)]\nServerName=[S]\n",
280 maxbuf, unicodestr);
281 break;
282
283 case 0xb:
284 data = smb_fdata(ndo, data,
285 "BROWSE PACKET:\nType=[B] (BecomeBackupBrowser)\nName=[S]\n",
286 maxbuf, unicodestr);
287 break;
288
289 case 0x9:
290 data = smb_fdata(ndo, data,
291 "BROWSE PACKET:\nType=[B] (GetBackupList)\nListCount?=[B]\nToken=[W]\n",
292 maxbuf, unicodestr);
293 break;
294
295 case 0xa:
296 data = smb_fdata(ndo, data,
297 "BROWSE PACKET:\nType=[B] (BackupListResponse)\nServerCount?=[B]\nToken=[W]\n*Name=[S]\n",
298 maxbuf, unicodestr);
299 break;
300
301 case 0xd:
302 data = smb_fdata(ndo, data,
303 "BROWSE PACKET:\nType=[B] (MasterAnnouncement)\nMasterName=[S]\n",
304 maxbuf, unicodestr);
305 break;
306
307 case 0xe:
308 data = smb_fdata(ndo, data,
309 "BROWSE PACKET:\nType=[B] (ResetBrowser)\nOptions=[B]\n", maxbuf, unicodestr);
310 break;
311
312 default:
313 data = smb_fdata(ndo, data, "Unknown Browser Frame ", maxbuf, unicodestr);
314 break;
315 }
316 return;
317 trunc:
318 ND_PRINT((ndo, "%s", tstr));
319 }
320
321
322 static void
print_ipc(netdissect_options * ndo,const u_char * param,int paramlen,const u_char * data,int datalen)323 print_ipc(netdissect_options *ndo,
324 const u_char *param, int paramlen, const u_char *data, int datalen)
325 {
326 if (paramlen)
327 smb_fdata(ndo, param, "Command=[w]\nStr1=[S]\nStr2=[S]\n", param + paramlen,
328 unicodestr);
329 if (datalen)
330 smb_fdata(ndo, data, "IPC ", data + datalen, unicodestr);
331 }
332
333
334 static void
print_trans(netdissect_options * ndo,const u_char * words,const u_char * data1,const u_char * buf,const u_char * maxbuf)335 print_trans(netdissect_options *ndo,
336 const u_char *words, const u_char *data1, const u_char *buf, const u_char *maxbuf)
337 {
338 u_int bcc;
339 const char *f1, *f2, *f3, *f4;
340 const u_char *data, *param;
341 const u_char *w = words + 1;
342 int datalen, paramlen;
343
344 if (request) {
345 ND_TCHECK2(w[12 * 2], 2);
346 paramlen = EXTRACT_LE_16BITS(w + 9 * 2);
347 param = buf + EXTRACT_LE_16BITS(w + 10 * 2);
348 datalen = EXTRACT_LE_16BITS(w + 11 * 2);
349 data = buf + EXTRACT_LE_16BITS(w + 12 * 2);
350 f1 = "TotParamCnt=[d] \nTotDataCnt=[d] \nMaxParmCnt=[d] \nMaxDataCnt=[d]\nMaxSCnt=[d] \nTransFlags=[w] \nRes1=[w] \nRes2=[w] \nRes3=[w]\nParamCnt=[d] \nParamOff=[d] \nDataCnt=[d] \nDataOff=[d] \nSUCnt=[d]\n";
351 f2 = "|Name=[S]\n";
352 f3 = "|Param ";
353 f4 = "|Data ";
354 } else {
355 ND_TCHECK2(w[7 * 2], 2);
356 paramlen = EXTRACT_LE_16BITS(w + 3 * 2);
357 param = buf + EXTRACT_LE_16BITS(w + 4 * 2);
358 datalen = EXTRACT_LE_16BITS(w + 6 * 2);
359 data = buf + EXTRACT_LE_16BITS(w + 7 * 2);
360 f1 = "TotParamCnt=[d] \nTotDataCnt=[d] \nRes1=[d]\nParamCnt=[d] \nParamOff=[d] \nRes2=[d] \nDataCnt=[d] \nDataOff=[d] \nRes3=[d]\nLsetup=[d]\n";
361 f2 = "|Unknown ";
362 f3 = "|Param ";
363 f4 = "|Data ";
364 }
365
366 smb_fdata(ndo, words + 1, f1, min(words + 1 + 2 * words[0], maxbuf),
367 unicodestr);
368
369 ND_TCHECK2(*data1, 2);
370 bcc = EXTRACT_LE_16BITS(data1);
371 ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
372 if (bcc > 0) {
373 smb_fdata(ndo, data1 + 2, f2, maxbuf - (paramlen + datalen), unicodestr);
374
375 if (strcmp((const char *)(data1 + 2), "\\MAILSLOT\\BROWSE") == 0) {
376 print_browse(ndo, param, paramlen, data, datalen);
377 return;
378 }
379
380 if (strcmp((const char *)(data1 + 2), "\\PIPE\\LANMAN") == 0) {
381 print_ipc(ndo, param, paramlen, data, datalen);
382 return;
383 }
384
385 if (paramlen)
386 smb_fdata(ndo, param, f3, min(param + paramlen, maxbuf), unicodestr);
387 if (datalen)
388 smb_fdata(ndo, data, f4, min(data + datalen, maxbuf), unicodestr);
389 }
390 return;
391 trunc:
392 ND_PRINT((ndo, "%s", tstr));
393 }
394
395
396 static void
print_negprot(netdissect_options * ndo,const u_char * words,const u_char * data,const u_char * buf _U_,const u_char * maxbuf)397 print_negprot(netdissect_options *ndo,
398 const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
399 {
400 u_int wct, bcc;
401 const char *f1 = NULL, *f2 = NULL;
402
403 ND_TCHECK(words[0]);
404 wct = words[0];
405 if (request)
406 f2 = "*|Dialect=[Y]\n";
407 else {
408 if (wct == 1)
409 f1 = "Core Protocol\nDialectIndex=[d]";
410 else if (wct == 17)
411 f1 = "NT1 Protocol\nDialectIndex=[d]\nSecMode=[B]\nMaxMux=[d]\nNumVcs=[d]\nMaxBuffer=[D]\nRawSize=[D]\nSessionKey=[W]\nCapabilities=[W]\nServerTime=[T3]TimeZone=[d]\nCryptKey=";
412 else if (wct == 13)
413 f1 = "Coreplus/Lanman1/Lanman2 Protocol\nDialectIndex=[d]\nSecMode=[w]\nMaxXMit=[d]\nMaxMux=[d]\nMaxVcs=[d]\nBlkMode=[w]\nSessionKey=[W]\nServerTime=[T1]TimeZone=[d]\nRes=[W]\nCryptKey=";
414 }
415
416 if (f1)
417 smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
418 unicodestr);
419 else
420 smb_print_data(ndo, words + 1, min(wct * 2, PTR_DIFF(maxbuf, words + 1)));
421
422 ND_TCHECK2(*data, 2);
423 bcc = EXTRACT_LE_16BITS(data);
424 ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
425 if (bcc > 0) {
426 if (f2)
427 smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_16BITS(data),
428 maxbuf), unicodestr);
429 else
430 smb_print_data(ndo, data + 2, min(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
431 }
432 return;
433 trunc:
434 ND_PRINT((ndo, "%s", tstr));
435 }
436
437 static void
print_sesssetup(netdissect_options * ndo,const u_char * words,const u_char * data,const u_char * buf _U_,const u_char * maxbuf)438 print_sesssetup(netdissect_options *ndo,
439 const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
440 {
441 u_int wct, bcc;
442 const char *f1 = NULL, *f2 = NULL;
443
444 ND_TCHECK(words[0]);
445 wct = words[0];
446 if (request) {
447 if (wct == 10)
448 f1 = "Com2=[w]\nOff2=[d]\nBufSize=[d]\nMpxMax=[d]\nVcNum=[d]\nSessionKey=[W]\nPassLen=[d]\nCryptLen=[d]\nCryptOff=[d]\nPass&Name=\n";
449 else
450 f1 = "Com2=[B]\nRes1=[B]\nOff2=[d]\nMaxBuffer=[d]\nMaxMpx=[d]\nVcNumber=[d]\nSessionKey=[W]\nCaseInsensitivePasswordLength=[d]\nCaseSensitivePasswordLength=[d]\nRes=[W]\nCapabilities=[W]\nPass1&Pass2&Account&Domain&OS&LanMan=\n";
451 } else {
452 if (wct == 3) {
453 f1 = "Com2=[w]\nOff2=[d]\nAction=[w]\n";
454 } else if (wct == 13) {
455 f1 = "Com2=[B]\nRes=[B]\nOff2=[d]\nAction=[w]\n";
456 f2 = "NativeOS=[S]\nNativeLanMan=[S]\nPrimaryDomain=[S]\n";
457 }
458 }
459
460 if (f1)
461 smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
462 unicodestr);
463 else
464 smb_print_data(ndo, words + 1, min(wct * 2, PTR_DIFF(maxbuf, words + 1)));
465
466 ND_TCHECK2(*data, 2);
467 bcc = EXTRACT_LE_16BITS(data);
468 ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
469 if (bcc > 0) {
470 if (f2)
471 smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_16BITS(data),
472 maxbuf), unicodestr);
473 else
474 smb_print_data(ndo, data + 2, min(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
475 }
476 return;
477 trunc:
478 ND_PRINT((ndo, "%s", tstr));
479 }
480
481 static void
print_lockingandx(netdissect_options * ndo,const u_char * words,const u_char * data,const u_char * buf _U_,const u_char * maxbuf)482 print_lockingandx(netdissect_options *ndo,
483 const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
484 {
485 u_int wct, bcc;
486 const u_char *maxwords;
487 const char *f1 = NULL, *f2 = NULL;
488
489 ND_TCHECK(words[0]);
490 wct = words[0];
491 if (request) {
492 f1 = "Com2=[w]\nOff2=[d]\nHandle=[d]\nLockType=[w]\nTimeOut=[D]\nUnlockCount=[d]\nLockCount=[d]\n";
493 ND_TCHECK(words[7]);
494 if (words[7] & 0x10)
495 f2 = "*Process=[d]\n[P2]Offset=[M]\nLength=[M]\n";
496 else
497 f2 = "*Process=[d]\nOffset=[D]\nLength=[D]\n";
498 } else {
499 f1 = "Com2=[w]\nOff2=[d]\n";
500 }
501
502 maxwords = min(words + 1 + wct * 2, maxbuf);
503 if (wct)
504 smb_fdata(ndo, words + 1, f1, maxwords, unicodestr);
505
506 ND_TCHECK2(*data, 2);
507 bcc = EXTRACT_LE_16BITS(data);
508 ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
509 if (bcc > 0) {
510 if (f2)
511 smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_16BITS(data),
512 maxbuf), unicodestr);
513 else
514 smb_print_data(ndo, data + 2, min(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
515 }
516 return;
517 trunc:
518 ND_PRINT((ndo, "%s", tstr));
519 }
520
521
522 static const struct smbfns smb_fns[] = {
523 { -1, "SMBunknown", 0, DEFDESCRIPT },
524
525 { SMBtcon, "SMBtcon", 0,
526 { NULL, "Path=[Z]\nPassword=[Z]\nDevice=[Z]\n",
527 "MaxXmit=[d]\nTreeId=[d]\n", NULL,
528 NULL } },
529
530 { SMBtdis, "SMBtdis", 0, DEFDESCRIPT },
531 { SMBexit, "SMBexit", 0, DEFDESCRIPT },
532 { SMBioctl, "SMBioctl", 0, DEFDESCRIPT },
533
534 { SMBecho, "SMBecho", 0,
535 { "ReverbCount=[d]\n", NULL,
536 "SequenceNum=[d]\n", NULL,
537 NULL } },
538
539 { SMBulogoffX, "SMBulogoffX", FLG_CHAIN, DEFDESCRIPT },
540
541 { SMBgetatr, "SMBgetatr", 0,
542 { NULL, "Path=[Z]\n",
543 "Attribute=[A]\nTime=[T2]Size=[D]\nRes=([w,w,w,w,w])\n", NULL,
544 NULL } },
545
546 { SMBsetatr, "SMBsetatr", 0,
547 { "Attribute=[A]\nTime=[T2]Res=([w,w,w,w,w])\n", "Path=[Z]\n",
548 NULL, NULL, NULL } },
549
550 { SMBchkpth, "SMBchkpth", 0,
551 { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
552
553 { SMBsearch, "SMBsearch", 0,
554 { "Count=[d]\nAttrib=[A]\n",
555 "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\nRes2=[W]\n",
556 "Count=[d]\n",
557 "BlkType=[B]\nBlkLen=[d]\n*\nRes1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\nRes2=[W]\nAttrib=[a]\nTime=[T1]Size=[D]\nName=[s13]\n",
558 NULL } },
559
560 { SMBopen, "SMBopen", 0,
561 { "Mode=[w]\nAttribute=[A]\n", "Path=[Z]\n",
562 "Handle=[d]\nOAttrib=[A]\nTime=[T2]Size=[D]\nAccess=[w]\n",
563 NULL, NULL } },
564
565 { SMBcreate, "SMBcreate", 0,
566 { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[d]\n", NULL, NULL } },
567
568 { SMBmknew, "SMBmknew", 0,
569 { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[d]\n", NULL, NULL } },
570
571 { SMBunlink, "SMBunlink", 0,
572 { "Attrib=[A]\n", "Path=[Z]\n", NULL, NULL, NULL } },
573
574 { SMBread, "SMBread", 0,
575 { "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
576 "Count=[d]\nRes=([w,w,w,w])\n", NULL, NULL } },
577
578 { SMBwrite, "SMBwrite", 0,
579 { "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
580 "Count=[d]\n", NULL, NULL } },
581
582 { SMBclose, "SMBclose", 0,
583 { "Handle=[d]\nTime=[T2]", NULL, NULL, NULL, NULL } },
584
585 { SMBmkdir, "SMBmkdir", 0,
586 { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
587
588 { SMBrmdir, "SMBrmdir", 0,
589 { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
590
591 { SMBdskattr, "SMBdskattr", 0,
592 { NULL, NULL,
593 "TotalUnits=[d]\nBlocksPerUnit=[d]\nBlockSize=[d]\nFreeUnits=[d]\nMedia=[w]\n",
594 NULL, NULL } },
595
596 { SMBmv, "SMBmv", 0,
597 { "Attrib=[A]\n", "OldPath=[Z]\nNewPath=[Z]\n", NULL, NULL, NULL } },
598
599 /*
600 * this is a Pathworks specific call, allowing the
601 * changing of the root path
602 */
603 { pSETDIR, "SMBsetdir", 0, { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
604
605 { SMBlseek, "SMBlseek", 0,
606 { "Handle=[d]\nMode=[w]\nOffset=[D]\n", "Offset=[D]\n", NULL, NULL, NULL } },
607
608 { SMBflush, "SMBflush", 0, { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
609
610 { SMBsplopen, "SMBsplopen", 0,
611 { "SetupLen=[d]\nMode=[w]\n", "Ident=[Z]\n", "Handle=[d]\n",
612 NULL, NULL } },
613
614 { SMBsplclose, "SMBsplclose", 0,
615 { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
616
617 { SMBsplretq, "SMBsplretq", 0,
618 { "MaxCount=[d]\nStartIndex=[d]\n", NULL,
619 "Count=[d]\nIndex=[d]\n",
620 "*Time=[T2]Status=[B]\nJobID=[d]\nSize=[D]\nRes=[B]Name=[s16]\n",
621 NULL } },
622
623 { SMBsplwr, "SMBsplwr", 0,
624 { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
625
626 { SMBlock, "SMBlock", 0,
627 { "Handle=[d]\nCount=[D]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
628
629 { SMBunlock, "SMBunlock", 0,
630 { "Handle=[d]\nCount=[D]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
631
632 /* CORE+ PROTOCOL FOLLOWS */
633
634 { SMBreadbraw, "SMBreadbraw", 0,
635 { "Handle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nRes=[d]\n",
636 NULL, NULL, NULL, NULL } },
637
638 { SMBwritebraw, "SMBwritebraw", 0,
639 { "Handle=[d]\nTotalCount=[d]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\n|DataSize=[d]\nDataOff=[d]\n",
640 NULL, "WriteRawAck", NULL, NULL } },
641
642 { SMBwritec, "SMBwritec", 0,
643 { NULL, NULL, "Count=[d]\n", NULL, NULL } },
644
645 { SMBwriteclose, "SMBwriteclose", 0,
646 { "Handle=[d]\nCount=[d]\nOffset=[D]\nTime=[T2]Res=([w,w,w,w,w,w])",
647 NULL, "Count=[d]\n", NULL, NULL } },
648
649 { SMBlockread, "SMBlockread", 0,
650 { "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
651 "Count=[d]\nRes=([w,w,w,w])\n", NULL, NULL } },
652
653 { SMBwriteunlock, "SMBwriteunlock", 0,
654 { "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
655 "Count=[d]\n", NULL, NULL } },
656
657 { SMBreadBmpx, "SMBreadBmpx", 0,
658 { "Handle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nRes=[w]\n",
659 NULL,
660 "Offset=[D]\nTotCount=[d]\nRemaining=[d]\nRes=([w,w])\nDataSize=[d]\nDataOff=[d]\n",
661 NULL, NULL } },
662
663 { SMBwriteBmpx, "SMBwriteBmpx", 0,
664 { "Handle=[d]\nTotCount=[d]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\nDataSize=[d]\nDataOff=[d]\n", NULL,
665 "Remaining=[d]\n", NULL, NULL } },
666
667 { SMBwriteBs, "SMBwriteBs", 0,
668 { "Handle=[d]\nTotCount=[d]\nOffset=[D]\nRes=[W]\nDataSize=[d]\nDataOff=[d]\n",
669 NULL, "Count=[d]\n", NULL, NULL } },
670
671 { SMBsetattrE, "SMBsetattrE", 0,
672 { "Handle=[d]\nCreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]", NULL,
673 NULL, NULL, NULL } },
674
675 { SMBgetattrE, "SMBgetattrE", 0,
676 { "Handle=[d]\n", NULL,
677 "CreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]Size=[D]\nAllocSize=[D]\nAttribute=[A]\n",
678 NULL, NULL } },
679
680 { SMBtranss, "SMBtranss", 0, DEFDESCRIPT },
681 { SMBioctls, "SMBioctls", 0, DEFDESCRIPT },
682
683 { SMBcopy, "SMBcopy", 0,
684 { "TreeID2=[d]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
685 "CopyCount=[d]\n", "|ErrStr=[S]\n", NULL } },
686
687 { SMBmove, "SMBmove", 0,
688 { "TreeID2=[d]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
689 "MoveCount=[d]\n", "|ErrStr=[S]\n", NULL } },
690
691 { SMBopenX, "SMBopenX", FLG_CHAIN,
692 { "Com2=[w]\nOff2=[d]\nFlags=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]OFun=[w]\nSize=[D]\nTimeOut=[D]\nRes=[W]\n",
693 "Path=[S]\n",
694 "Com2=[w]\nOff2=[d]\nHandle=[d]\nAttrib=[A]\nTime=[T2]Size=[D]\nAccess=[w]\nType=[w]\nState=[w]\nAction=[w]\nFileID=[W]\nRes=[w]\n",
695 NULL, NULL } },
696
697 { SMBreadX, "SMBreadX", FLG_CHAIN,
698 { "Com2=[w]\nOff2=[d]\nHandle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nCountLeft=[d]\n",
699 NULL,
700 "Com2=[w]\nOff2=[d]\nRemaining=[d]\nRes=[W]\nDataSize=[d]\nDataOff=[d]\nRes=([w,w,w,w])\n",
701 NULL, NULL } },
702
703 { SMBwriteX, "SMBwriteX", FLG_CHAIN,
704 { "Com2=[w]\nOff2=[d]\nHandle=[d]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nCountLeft=[d]\nRes=[w]\nDataSize=[d]\nDataOff=[d]\n",
705 NULL,
706 "Com2=[w]\nOff2=[d]\nCount=[d]\nRemaining=[d]\nRes=[W]\n",
707 NULL, NULL } },
708
709 { SMBffirst, "SMBffirst", 0,
710 { "Count=[d]\nAttrib=[A]\n",
711 "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
712 "Count=[d]\n",
713 "BlkType=[B]\nBlkLen=[d]\n*\nRes1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\nRes2=[W]\nAttrib=[a]\nTime=[T1]Size=[D]\nName=[s13]\n",
714 NULL } },
715
716 { SMBfunique, "SMBfunique", 0,
717 { "Count=[d]\nAttrib=[A]\n",
718 "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
719 "Count=[d]\n",
720 "BlkType=[B]\nBlkLen=[d]\n*\nRes1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\nRes2=[W]\nAttrib=[a]\nTime=[T1]Size=[D]\nName=[s13]\n",
721 NULL } },
722
723 { SMBfclose, "SMBfclose", 0,
724 { "Count=[d]\nAttrib=[A]\n",
725 "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
726 "Count=[d]\n",
727 "BlkType=[B]\nBlkLen=[d]\n*\nRes1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\nRes2=[W]\nAttrib=[a]\nTime=[T1]Size=[D]\nName=[s13]\n",
728 NULL } },
729
730 { SMBfindnclose, "SMBfindnclose", 0,
731 { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
732
733 { SMBfindclose, "SMBfindclose", 0,
734 { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
735
736 { SMBsends, "SMBsends", 0,
737 { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
738
739 { SMBsendstrt, "SMBsendstrt", 0,
740 { NULL, "Source=[Z]\nDest=[Z]\n", "GroupID=[d]\n", NULL, NULL } },
741
742 { SMBsendend, "SMBsendend", 0,
743 { "GroupID=[d]\n", NULL, NULL, NULL, NULL } },
744
745 { SMBsendtxt, "SMBsendtxt", 0,
746 { "GroupID=[d]\n", NULL, NULL, NULL, NULL } },
747
748 { SMBsendb, "SMBsendb", 0,
749 { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
750
751 { SMBfwdname, "SMBfwdname", 0, DEFDESCRIPT },
752 { SMBcancelf, "SMBcancelf", 0, DEFDESCRIPT },
753 { SMBgetmac, "SMBgetmac", 0, DEFDESCRIPT },
754
755 { SMBnegprot, "SMBnegprot", 0,
756 { NULL, NULL, NULL, NULL, print_negprot } },
757
758 { SMBsesssetupX, "SMBsesssetupX", FLG_CHAIN,
759 { NULL, NULL, NULL, NULL, print_sesssetup } },
760
761 { SMBtconX, "SMBtconX", FLG_CHAIN,
762 { "Com2=[w]\nOff2=[d]\nFlags=[w]\nPassLen=[d]\nPasswd&Path&Device=\n",
763 NULL, "Com2=[w]\nOff2=[d]\n", "ServiceType=[R]\n", NULL } },
764
765 { SMBlockingX, "SMBlockingX", FLG_CHAIN,
766 { NULL, NULL, NULL, NULL, print_lockingandx } },
767
768 { SMBtrans2, "SMBtrans2", 0, { NULL, NULL, NULL, NULL, print_trans2 } },
769
770 { SMBtranss2, "SMBtranss2", 0, DEFDESCRIPT },
771 { SMBctemp, "SMBctemp", 0, DEFDESCRIPT },
772 { SMBreadBs, "SMBreadBs", 0, DEFDESCRIPT },
773 { SMBtrans, "SMBtrans", 0, { NULL, NULL, NULL, NULL, print_trans } },
774
775 { SMBnttrans, "SMBnttrans", 0, DEFDESCRIPT },
776 { SMBnttranss, "SMBnttranss", 0, DEFDESCRIPT },
777
778 { SMBntcreateX, "SMBntcreateX", FLG_CHAIN,
779 { "Com2=[w]\nOff2=[d]\nRes=[b]\nNameLen=[ld]\nFlags=[W]\nRootDirectoryFid=[D]\nAccessMask=[W]\nAllocationSize=[L]\nExtFileAttributes=[W]\nShareAccess=[W]\nCreateDisposition=[W]\nCreateOptions=[W]\nImpersonationLevel=[W]\nSecurityFlags=[b]\n",
780 "Path=[C]\n",
781 "Com2=[w]\nOff2=[d]\nOplockLevel=[b]\nFid=[d]\nCreateAction=[W]\nCreateTime=[T3]LastAccessTime=[T3]LastWriteTime=[T3]ChangeTime=[T3]ExtFileAttributes=[W]\nAllocationSize=[L]\nEndOfFile=[L]\nFileType=[w]\nDeviceState=[w]\nDirectory=[b]\n",
782 NULL, NULL } },
783
784 { SMBntcancel, "SMBntcancel", 0, DEFDESCRIPT },
785
786 { -1, NULL, 0, DEFDESCRIPT }
787 };
788
789
790 /*
791 * print a SMB message
792 */
793 static void
print_smb(netdissect_options * ndo,const u_char * buf,const u_char * maxbuf)794 print_smb(netdissect_options *ndo,
795 const u_char *buf, const u_char *maxbuf)
796 {
797 uint16_t flags2;
798 int nterrcodes;
799 int command;
800 uint32_t nterror;
801 const u_char *words, *maxwords, *data;
802 const struct smbfns *fn;
803 const char *fmt_smbheader =
804 "[P4]SMB Command = [B]\nError class = [BP1]\nError code = [d]\nFlags1 = [B]\nFlags2 = [B][P13]\nTree ID = [d]\nProc ID = [d]\nUID = [d]\nMID = [d]\nWord Count = [b]\n";
805 int smboffset;
806
807 ND_TCHECK(buf[9]);
808 request = (buf[9] & 0x80) ? 0 : 1;
809 startbuf = buf;
810
811 command = buf[4];
812
813 fn = smbfind(command, smb_fns);
814
815 if (ndo->ndo_vflag > 1)
816 ND_PRINT((ndo, "\n"));
817
818 ND_PRINT((ndo, "SMB PACKET: %s (%s)\n", fn->name, request ? "REQUEST" : "REPLY"));
819
820 if (ndo->ndo_vflag < 2)
821 return;
822
823 ND_TCHECK_16BITS(&buf[10]);
824 flags2 = EXTRACT_LE_16BITS(&buf[10]);
825 unicodestr = flags2 & 0x8000;
826 nterrcodes = flags2 & 0x4000;
827
828 /* print out the header */
829 smb_fdata(ndo, buf, fmt_smbheader, buf + 33, unicodestr);
830
831 if (nterrcodes) {
832 nterror = EXTRACT_LE_32BITS(&buf[5]);
833 if (nterror)
834 ND_PRINT((ndo, "NTError = %s\n", nt_errstr(nterror)));
835 } else {
836 if (buf[5])
837 ND_PRINT((ndo, "SMBError = %s\n", smb_errstr(buf[5], EXTRACT_LE_16BITS(&buf[7]))));
838 }
839
840 smboffset = 32;
841
842 for (;;) {
843 const char *f1, *f2;
844 int wct;
845 u_int bcc;
846 int newsmboffset;
847
848 words = buf + smboffset;
849 ND_TCHECK(words[0]);
850 wct = words[0];
851 data = words + 1 + wct * 2;
852 maxwords = min(data, maxbuf);
853
854 if (request) {
855 f1 = fn->descript.req_f1;
856 f2 = fn->descript.req_f2;
857 } else {
858 f1 = fn->descript.rep_f1;
859 f2 = fn->descript.rep_f2;
860 }
861
862 if (fn->descript.fn)
863 (*fn->descript.fn)(ndo, words, data, buf, maxbuf);
864 else {
865 if (wct) {
866 if (f1)
867 smb_fdata(ndo, words + 1, f1, words + 1 + wct * 2, unicodestr);
868 else {
869 int i;
870 int v;
871
872 for (i = 0; &words[1 + 2 * i] < maxwords; i++) {
873 ND_TCHECK2(words[1 + 2 * i], 2);
874 v = EXTRACT_LE_16BITS(words + 1 + 2 * i);
875 ND_PRINT((ndo, "smb_vwv[%d]=%d (0x%X)\n", i, v, v));
876 }
877 }
878 }
879
880 ND_TCHECK2(*data, 2);
881 bcc = EXTRACT_LE_16BITS(data);
882 ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
883 if (f2) {
884 if (bcc > 0)
885 smb_fdata(ndo, data + 2, f2, data + 2 + bcc, unicodestr);
886 } else {
887 if (bcc > 0) {
888 ND_PRINT((ndo, "smb_buf[]=\n"));
889 smb_print_data(ndo, data + 2, min(bcc, PTR_DIFF(maxbuf, data + 2)));
890 }
891 }
892 }
893
894 if ((fn->flags & FLG_CHAIN) == 0)
895 break;
896 if (wct == 0)
897 break;
898 ND_TCHECK(words[1]);
899 command = words[1];
900 if (command == 0xFF)
901 break;
902 ND_TCHECK2(words[3], 2);
903 newsmboffset = EXTRACT_LE_16BITS(words + 3);
904
905 fn = smbfind(command, smb_fns);
906
907 ND_PRINT((ndo, "\nSMB PACKET: %s (%s) (CHAINED)\n",
908 fn->name, request ? "REQUEST" : "REPLY"));
909 if (newsmboffset <= smboffset) {
910 ND_PRINT((ndo, "Bad andX offset: %u <= %u\n", newsmboffset, smboffset));
911 break;
912 }
913 smboffset = newsmboffset;
914 }
915
916 ND_PRINT((ndo, "\n"));
917 return;
918 trunc:
919 ND_PRINT((ndo, "%s", tstr));
920 }
921
922
923 /*
924 * print a NBT packet received across tcp on port 139
925 */
926 void
nbt_tcp_print(netdissect_options * ndo,const u_char * data,int length)927 nbt_tcp_print(netdissect_options *ndo,
928 const u_char *data, int length)
929 {
930 int caplen;
931 int type;
932 u_int nbt_len;
933 const u_char *maxbuf;
934
935 if (length < 4)
936 goto trunc;
937 if (ndo->ndo_snapend < data)
938 goto trunc;
939 caplen = ndo->ndo_snapend - data;
940 if (caplen < 4)
941 goto trunc;
942 maxbuf = data + caplen;
943 type = data[0];
944 nbt_len = EXTRACT_16BITS(data + 2);
945 length -= 4;
946 caplen -= 4;
947
948 startbuf = data;
949
950 if (ndo->ndo_vflag < 2) {
951 ND_PRINT((ndo, " NBT Session Packet: "));
952 switch (type) {
953 case 0x00:
954 ND_PRINT((ndo, "Session Message"));
955 break;
956
957 case 0x81:
958 ND_PRINT((ndo, "Session Request"));
959 break;
960
961 case 0x82:
962 ND_PRINT((ndo, "Session Granted"));
963 break;
964
965 case 0x83:
966 {
967 int ecode;
968
969 if (nbt_len < 4)
970 goto trunc;
971 if (length < 4)
972 goto trunc;
973 if (caplen < 4)
974 goto trunc;
975 ecode = data[4];
976
977 ND_PRINT((ndo, "Session Reject, "));
978 switch (ecode) {
979 case 0x80:
980 ND_PRINT((ndo, "Not listening on called name"));
981 break;
982 case 0x81:
983 ND_PRINT((ndo, "Not listening for calling name"));
984 break;
985 case 0x82:
986 ND_PRINT((ndo, "Called name not present"));
987 break;
988 case 0x83:
989 ND_PRINT((ndo, "Called name present, but insufficient resources"));
990 break;
991 default:
992 ND_PRINT((ndo, "Unspecified error 0x%X", ecode));
993 break;
994 }
995 }
996 break;
997
998 case 0x85:
999 ND_PRINT((ndo, "Session Keepalive"));
1000 break;
1001
1002 default:
1003 data = smb_fdata(ndo, data, "Unknown packet type [rB]", maxbuf, 0);
1004 break;
1005 }
1006 } else {
1007 ND_PRINT((ndo, "\n>>> NBT Session Packet\n"));
1008 switch (type) {
1009 case 0x00:
1010 data = smb_fdata(ndo, data, "[P1]NBT Session Message\nFlags=[B]\nLength=[rd]\n",
1011 data + 4, 0);
1012 if (data == NULL)
1013 break;
1014 if (nbt_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1015 if ((int)nbt_len > caplen) {
1016 if ((int)nbt_len > length)
1017 ND_PRINT((ndo, "WARNING: Packet is continued in later TCP segments\n"));
1018 else
1019 ND_PRINT((ndo, "WARNING: Short packet. Try increasing the snap length by %d\n",
1020 nbt_len - caplen));
1021 }
1022 print_smb(ndo, data, maxbuf > data + nbt_len ? data + nbt_len : maxbuf);
1023 } else
1024 ND_PRINT((ndo, "Session packet:(raw data or continuation?)\n"));
1025 break;
1026
1027 case 0x81:
1028 data = smb_fdata(ndo, data,
1029 "[P1]NBT Session Request\nFlags=[B]\nLength=[rd]\nDestination=[n1]\nSource=[n1]\n",
1030 maxbuf, 0);
1031 break;
1032
1033 case 0x82:
1034 data = smb_fdata(ndo, data, "[P1]NBT Session Granted\nFlags=[B]\nLength=[rd]\n", maxbuf, 0);
1035 break;
1036
1037 case 0x83:
1038 {
1039 const u_char *origdata;
1040 int ecode;
1041
1042 origdata = data;
1043 data = smb_fdata(ndo, data, "[P1]NBT SessionReject\nFlags=[B]\nLength=[rd]\nReason=[B]\n",
1044 maxbuf, 0);
1045 if (data == NULL)
1046 break;
1047 if (nbt_len >= 1 && caplen >= 1) {
1048 ecode = origdata[4];
1049 switch (ecode) {
1050 case 0x80:
1051 ND_PRINT((ndo, "Not listening on called name\n"));
1052 break;
1053 case 0x81:
1054 ND_PRINT((ndo, "Not listening for calling name\n"));
1055 break;
1056 case 0x82:
1057 ND_PRINT((ndo, "Called name not present\n"));
1058 break;
1059 case 0x83:
1060 ND_PRINT((ndo, "Called name present, but insufficient resources\n"));
1061 break;
1062 default:
1063 ND_PRINT((ndo, "Unspecified error 0x%X\n", ecode));
1064 break;
1065 }
1066 }
1067 }
1068 break;
1069
1070 case 0x85:
1071 data = smb_fdata(ndo, data, "[P1]NBT Session Keepalive\nFlags=[B]\nLength=[rd]\n", maxbuf, 0);
1072 break;
1073
1074 default:
1075 data = smb_fdata(ndo, data, "NBT - Unknown packet type\nType=[B]\n", maxbuf, 0);
1076 break;
1077 }
1078 ND_PRINT((ndo, "\n"));
1079 }
1080 return;
1081 trunc:
1082 ND_PRINT((ndo, "%s", tstr));
1083 }
1084
1085 static const struct tok opcode_str[] = {
1086 { 0, "QUERY" },
1087 { 5, "REGISTRATION" },
1088 { 6, "RELEASE" },
1089 { 7, "WACK" },
1090 { 8, "REFRESH(8)" },
1091 { 9, "REFRESH" },
1092 { 15, "MULTIHOMED REGISTRATION" },
1093 { 0, NULL }
1094 };
1095
1096 /*
1097 * print a NBT packet received across udp on port 137
1098 */
1099 void
nbt_udp137_print(netdissect_options * ndo,const u_char * data,int length)1100 nbt_udp137_print(netdissect_options *ndo,
1101 const u_char *data, int length)
1102 {
1103 const u_char *maxbuf = data + length;
1104 int name_trn_id, response, opcode, nm_flags, rcode;
1105 int qdcount, ancount, nscount, arcount;
1106 const u_char *p;
1107 int total, i;
1108
1109 ND_TCHECK2(data[10], 2);
1110 name_trn_id = EXTRACT_16BITS(data);
1111 response = (data[2] >> 7);
1112 opcode = (data[2] >> 3) & 0xF;
1113 nm_flags = ((data[2] & 0x7) << 4) + (data[3] >> 4);
1114 rcode = data[3] & 0xF;
1115 qdcount = EXTRACT_16BITS(data + 4);
1116 ancount = EXTRACT_16BITS(data + 6);
1117 nscount = EXTRACT_16BITS(data + 8);
1118 arcount = EXTRACT_16BITS(data + 10);
1119 startbuf = data;
1120
1121 if (maxbuf <= data)
1122 return;
1123
1124 if (ndo->ndo_vflag > 1)
1125 ND_PRINT((ndo, "\n>>> "));
1126
1127 ND_PRINT((ndo, "NBT UDP PACKET(137): %s", tok2str(opcode_str, "OPUNKNOWN", opcode)));
1128 if (response) {
1129 ND_PRINT((ndo, "; %s", rcode ? "NEGATIVE" : "POSITIVE"));
1130 }
1131 ND_PRINT((ndo, "; %s; %s", response ? "RESPONSE" : "REQUEST",
1132 (nm_flags & 1) ? "BROADCAST" : "UNICAST"));
1133
1134 if (ndo->ndo_vflag < 2)
1135 return;
1136
1137 ND_PRINT((ndo, "\nTrnID=0x%X\nOpCode=%d\nNmFlags=0x%X\nRcode=%d\nQueryCount=%d\nAnswerCount=%d\nAuthorityCount=%d\nAddressRecCount=%d\n",
1138 name_trn_id, opcode, nm_flags, rcode, qdcount, ancount, nscount,
1139 arcount));
1140
1141 p = data + 12;
1142
1143 total = ancount + nscount + arcount;
1144
1145 if (qdcount > 100 || total > 100) {
1146 ND_PRINT((ndo, "Corrupt packet??\n"));
1147 return;
1148 }
1149
1150 if (qdcount) {
1151 ND_PRINT((ndo, "QuestionRecords:\n"));
1152 for (i = 0; i < qdcount; i++) {
1153 p = smb_fdata(ndo, p,
1154 "|Name=[n1]\nQuestionType=[rw]\nQuestionClass=[rw]\n#",
1155 maxbuf, 0);
1156 if (p == NULL)
1157 goto out;
1158 }
1159 }
1160
1161 if (total) {
1162 ND_PRINT((ndo, "\nResourceRecords:\n"));
1163 for (i = 0; i < total; i++) {
1164 int rdlen;
1165 int restype;
1166
1167 p = smb_fdata(ndo, p, "Name=[n1]\n#", maxbuf, 0);
1168 if (p == NULL)
1169 goto out;
1170 ND_TCHECK_16BITS(p);
1171 restype = EXTRACT_16BITS(p);
1172 p = smb_fdata(ndo, p, "ResType=[rw]\nResClass=[rw]\nTTL=[rD]\n", p + 8, 0);
1173 if (p == NULL)
1174 goto out;
1175 ND_TCHECK_16BITS(p);
1176 rdlen = EXTRACT_16BITS(p);
1177 ND_PRINT((ndo, "ResourceLength=%d\nResourceData=\n", rdlen));
1178 p += 2;
1179 if (rdlen == 6) {
1180 p = smb_fdata(ndo, p, "AddrType=[rw]\nAddress=[b.b.b.b]\n", p + rdlen, 0);
1181 if (p == NULL)
1182 goto out;
1183 } else {
1184 if (restype == 0x21) {
1185 int numnames;
1186
1187 ND_TCHECK(*p);
1188 numnames = p[0];
1189 p = smb_fdata(ndo, p, "NumNames=[B]\n", p + 1, 0);
1190 if (p == NULL)
1191 goto out;
1192 while (numnames--) {
1193 p = smb_fdata(ndo, p, "Name=[n2]\t#", maxbuf, 0);
1194 if (p == NULL)
1195 goto out;
1196 ND_TCHECK(*p);
1197 if (p[0] & 0x80)
1198 ND_PRINT((ndo, "<GROUP> "));
1199 switch (p[0] & 0x60) {
1200 case 0x00: ND_PRINT((ndo, "B ")); break;
1201 case 0x20: ND_PRINT((ndo, "P ")); break;
1202 case 0x40: ND_PRINT((ndo, "M ")); break;
1203 case 0x60: ND_PRINT((ndo, "_ ")); break;
1204 }
1205 if (p[0] & 0x10)
1206 ND_PRINT((ndo, "<DEREGISTERING> "));
1207 if (p[0] & 0x08)
1208 ND_PRINT((ndo, "<CONFLICT> "));
1209 if (p[0] & 0x04)
1210 ND_PRINT((ndo, "<ACTIVE> "));
1211 if (p[0] & 0x02)
1212 ND_PRINT((ndo, "<PERMANENT> "));
1213 ND_PRINT((ndo, "\n"));
1214 p += 2;
1215 }
1216 } else {
1217 smb_print_data(ndo, p, min(rdlen, length - (p - data)));
1218 p += rdlen;
1219 }
1220 }
1221 }
1222 }
1223
1224 if (p < maxbuf)
1225 smb_fdata(ndo, p, "AdditionalData:\n", maxbuf, 0);
1226
1227 out:
1228 ND_PRINT((ndo, "\n"));
1229 return;
1230 trunc:
1231 ND_PRINT((ndo, "%s", tstr));
1232 }
1233
1234 /*
1235 * Print an SMB-over-TCP packet received across tcp on port 445
1236 */
1237 void
smb_tcp_print(netdissect_options * ndo,const u_char * data,int length)1238 smb_tcp_print(netdissect_options *ndo,
1239 const u_char * data, int length)
1240 {
1241 int caplen;
1242 u_int smb_len;
1243 const u_char *maxbuf;
1244
1245 if (length < 4)
1246 goto trunc;
1247 if (ndo->ndo_snapend < data)
1248 goto trunc;
1249 caplen = ndo->ndo_snapend - data;
1250 if (caplen < 4)
1251 goto trunc;
1252 maxbuf = data + caplen;
1253 smb_len = EXTRACT_24BITS(data + 1);
1254 length -= 4;
1255 caplen -= 4;
1256
1257 startbuf = data;
1258 data += 4;
1259
1260 if (smb_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1261 if ((int)smb_len > caplen) {
1262 if ((int)smb_len > length)
1263 ND_PRINT((ndo, " WARNING: Packet is continued in later TCP segments\n"));
1264 else
1265 ND_PRINT((ndo, " WARNING: Short packet. Try increasing the snap length by %d\n",
1266 smb_len - caplen));
1267 } else
1268 ND_PRINT((ndo, " "));
1269 print_smb(ndo, data, maxbuf > data + smb_len ? data + smb_len : maxbuf);
1270 } else
1271 ND_PRINT((ndo, " SMB-over-TCP packet:(raw data or continuation?)\n"));
1272 return;
1273 trunc:
1274 ND_PRINT((ndo, "%s", tstr));
1275 }
1276
1277 /*
1278 * print a NBT packet received across udp on port 138
1279 */
1280 void
nbt_udp138_print(netdissect_options * ndo,const u_char * data,int length)1281 nbt_udp138_print(netdissect_options *ndo,
1282 const u_char *data, int length)
1283 {
1284 const u_char *maxbuf = data + length;
1285
1286 if (maxbuf > ndo->ndo_snapend)
1287 maxbuf = ndo->ndo_snapend;
1288 if (maxbuf <= data)
1289 return;
1290 startbuf = data;
1291
1292 if (ndo->ndo_vflag < 2) {
1293 ND_PRINT((ndo, "NBT UDP PACKET(138)"));
1294 return;
1295 }
1296
1297 data = smb_fdata(ndo, data,
1298 "\n>>> NBT UDP PACKET(138) Res=[rw] ID=[rw] IP=[b.b.b.b] Port=[rd] Length=[rd] Res2=[rw]\nSourceName=[n1]\nDestName=[n1]\n#",
1299 maxbuf, 0);
1300
1301 if (data != NULL) {
1302 /* If there isn't enough data for "\377SMB", don't check for it. */
1303 if (&data[3] >= maxbuf)
1304 goto out;
1305
1306 if (memcmp(data, "\377SMB",4) == 0)
1307 print_smb(ndo, data, maxbuf);
1308 }
1309 out:
1310 ND_PRINT((ndo, "\n"));
1311 }
1312
1313
1314 /*
1315 print netbeui frames
1316 */
1317 static struct nbf_strings {
1318 const char *name;
1319 const char *nonverbose;
1320 const char *verbose;
1321 } nbf_strings[0x20] = {
1322 { "Add Group Name Query", ", [P23]Name to add=[n2]#",
1323 "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1324 { "Add Name Query", ", [P23]Name to add=[n2]#",
1325 "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1326 { "Name In Conflict", NULL, NULL },
1327 { "Status Query", NULL, NULL },
1328 { NULL, NULL, NULL }, /* not used */
1329 { NULL, NULL, NULL }, /* not used */
1330 { NULL, NULL, NULL }, /* not used */
1331 { "Terminate Trace", NULL, NULL },
1332 { "Datagram", NULL,
1333 "[P7]Destination=[n2]\nSource=[n2]\n" },
1334 { "Broadcast Datagram", NULL,
1335 "[P7]Destination=[n2]\nSource=[n2]\n" },
1336 { "Name Query", ", [P7]Name=[n2]#",
1337 "[P1]SessionNumber=[B]\nNameType=[B][P2]\nResponseCorrelator=[w]\nName=[n2]\nName of sender=[n2]\n" },
1338 { NULL, NULL, NULL }, /* not used */
1339 { NULL, NULL, NULL }, /* not used */
1340 { "Add Name Response", ", [P1]GroupName=[w] [P4]Destination=[n2] Source=[n2]#",
1341 "AddNameInProcess=[B]\nGroupName=[w]\nTransmitCorrelator=[w][P2]\nDestination=[n2]\nSource=[n2]\n" },
1342 { "Name Recognized", NULL,
1343 "[P1]Data2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nDestination=[n2]\nSource=[n2]\n" },
1344 { "Status Response", NULL, NULL },
1345 { NULL, NULL, NULL }, /* not used */
1346 { NULL, NULL, NULL }, /* not used */
1347 { NULL, NULL, NULL }, /* not used */
1348 { "Terminate Trace", NULL, NULL },
1349 { "Data Ack", NULL,
1350 "[P3]TransmitCorrelator=[w][P2]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1351 { "Data First/Middle", NULL,
1352 "Flags=[{RECEIVE_CONTINUE|NO_ACK||PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1353 { "Data Only/Last", NULL,
1354 "Flags=[{|NO_ACK|PIGGYBACK_ACK_ALLOWED|PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1355 { "Session Confirm", NULL,
1356 "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1357 { "Session End", NULL,
1358 "[P1]Data2=[w][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1359 { "Session Initialize", NULL,
1360 "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1361 { "No Receive", NULL,
1362 "Flags=[{|SEND_NO_ACK}]\nDataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1363 { "Receive Outstanding", NULL,
1364 "[P1]DataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1365 { "Receive Continue", NULL,
1366 "[P2]TransmitCorrelator=[w]\n[P2]RemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1367 { NULL, NULL, NULL }, /* not used */
1368 { NULL, NULL, NULL }, /* not used */
1369 { "Session Alive", NULL, NULL }
1370 };
1371
1372 void
netbeui_print(netdissect_options * ndo,u_short control,const u_char * data,int length)1373 netbeui_print(netdissect_options *ndo,
1374 u_short control, const u_char *data, int length)
1375 {
1376 const u_char *maxbuf = data + length;
1377 int len;
1378 int command;
1379 const u_char *data2;
1380 int is_truncated = 0;
1381
1382 if (maxbuf > ndo->ndo_snapend)
1383 maxbuf = ndo->ndo_snapend;
1384 ND_TCHECK(data[4]);
1385 len = EXTRACT_LE_16BITS(data);
1386 command = data[4];
1387 data2 = data + len;
1388 if (data2 >= maxbuf) {
1389 data2 = maxbuf;
1390 is_truncated = 1;
1391 }
1392
1393 startbuf = data;
1394
1395 if (ndo->ndo_vflag < 2) {
1396 ND_PRINT((ndo, "NBF Packet: "));
1397 data = smb_fdata(ndo, data, "[P5]#", maxbuf, 0);
1398 } else {
1399 ND_PRINT((ndo, "\n>>> NBF Packet\nType=0x%X ", control));
1400 data = smb_fdata(ndo, data, "Length=[d] Signature=[w] Command=[B]\n#", maxbuf, 0);
1401 }
1402 if (data == NULL)
1403 goto out;
1404
1405 if (command > 0x1f || nbf_strings[command].name == NULL) {
1406 if (ndo->ndo_vflag < 2)
1407 data = smb_fdata(ndo, data, "Unknown NBF Command#", data2, 0);
1408 else
1409 data = smb_fdata(ndo, data, "Unknown NBF Command\n", data2, 0);
1410 } else {
1411 if (ndo->ndo_vflag < 2) {
1412 ND_PRINT((ndo, "%s", nbf_strings[command].name));
1413 if (nbf_strings[command].nonverbose != NULL)
1414 data = smb_fdata(ndo, data, nbf_strings[command].nonverbose, data2, 0);
1415 } else {
1416 ND_PRINT((ndo, "%s:\n", nbf_strings[command].name));
1417 if (nbf_strings[command].verbose != NULL)
1418 data = smb_fdata(ndo, data, nbf_strings[command].verbose, data2, 0);
1419 else
1420 ND_PRINT((ndo, "\n"));
1421 }
1422 }
1423
1424 if (ndo->ndo_vflag < 2)
1425 return;
1426
1427 if (data == NULL)
1428 goto out;
1429
1430 if (is_truncated) {
1431 /* data2 was past the end of the buffer */
1432 goto out;
1433 }
1434
1435 /* If this isn't a command that would contain an SMB message, quit. */
1436 if (command != 0x08 && command != 0x09 && command != 0x15 &&
1437 command != 0x16)
1438 goto out;
1439
1440 /* If there isn't enough data for "\377SMB", don't look for it. */
1441 if (&data2[3] >= maxbuf)
1442 goto out;
1443
1444 if (memcmp(data2, "\377SMB",4) == 0)
1445 print_smb(ndo, data2, maxbuf);
1446 else {
1447 int i;
1448 for (i = 0; i < 128; i++) {
1449 if (&data2[i + 3] >= maxbuf)
1450 break;
1451 if (memcmp(&data2[i], "\377SMB", 4) == 0) {
1452 ND_PRINT((ndo, "found SMB packet at %d\n", i));
1453 print_smb(ndo, &data2[i], maxbuf);
1454 break;
1455 }
1456 }
1457 }
1458
1459 out:
1460 ND_PRINT((ndo, "\n"));
1461 return;
1462 trunc:
1463 ND_PRINT((ndo, "%s", tstr));
1464 }
1465
1466
1467 /*
1468 * print IPX-Netbios frames
1469 */
1470 void
ipx_netbios_print(netdissect_options * ndo,const u_char * data,u_int length)1471 ipx_netbios_print(netdissect_options *ndo,
1472 const u_char *data, u_int length)
1473 {
1474 /*
1475 * this is a hack till I work out how to parse the rest of the
1476 * NetBIOS-over-IPX stuff
1477 */
1478 int i;
1479 const u_char *maxbuf;
1480
1481 maxbuf = data + length;
1482 /* Don't go past the end of the captured data in the packet. */
1483 if (maxbuf > ndo->ndo_snapend)
1484 maxbuf = ndo->ndo_snapend;
1485 startbuf = data;
1486 for (i = 0; i < 128; i++) {
1487 if (&data[i + 4] > maxbuf)
1488 break;
1489 if (memcmp(&data[i], "\377SMB", 4) == 0) {
1490 smb_fdata(ndo, data, "\n>>> IPX transport ", &data[i], 0);
1491 print_smb(ndo, &data[i], maxbuf);
1492 ND_PRINT((ndo, "\n"));
1493 break;
1494 }
1495 }
1496 if (i == 128)
1497 smb_fdata(ndo, data, "\n>>> Unknown IPX ", maxbuf, 0);
1498 }
1499