The Tcpdump Group git mirrors - tcpdump/blob - print-smb.c

   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
  24 static int request = 0;
  25 static int unicodestr = 0;
  26
  27 extern const u_char *startbuf;
  28
  29 const u_char *startbuf = NULL;
  30
  31 struct smbdescript {
  32     const char *req_f1;
  33     const char *req_f2;
  34     const char *rep_f1;
  35     const char *rep_f2;
  36     void (*fn)(netdissect_options *, const u_char *, const u_char *, const u_char *, const u_char *);
  37 };
  38
  39 struct smbdescriptint {
  40     const char *req_f1;
  41     const char *req_f2;
  42     const char *rep_f1;
  43     const char *rep_f2;
  44     void (*fn)(netdissect_options *, const u_char *, const u_char *, u_int, u_int);
  45 };
  46
  47 struct smbfns
  48 {
  49     int id;
  50     const char *name;
  51     int flags;
  52     struct smbdescript descript;
  53 };
  54
  55 struct smbfnsint
  56 {
  57     int id;
  58     const char *name;
  59     int flags;
  60     struct smbdescriptint descript;
  61 };
  62
  63 #define DEFDESCRIPT     { NULL, NULL, NULL, NULL, NULL }
  64
  65 #define FLG_CHAIN       (1 << 0)
  66
  67 static const struct smbfns *
  68 smbfind(int id, const struct smbfns *list)
  69 {
  70     int sindex;
  71
  72     for (sindex = 0; list[sindex].name; sindex++)
  73         if (list[sindex].id == id)
  74             return(&list[sindex]);
  75
  76     return(&list[0]);
  77 }
  78
  79 static const struct smbfnsint *
  80 smbfindint(int id, const struct smbfnsint *list)
  81 {
  82     int sindex;
  83
  84     for (sindex = 0; list[sindex].name; sindex++)
  85         if (list[sindex].id == id)
  86             return(&list[sindex]);
  87
  88     return(&list[0]);
  89 }
  90
  91 static void
  92 trans2_findfirst(netdissect_options *ndo,
  93                  const u_char *param, const u_char *data, u_int pcnt, u_int dcnt)
  94 {
  95     const char *fmt;
  96
  97     if (request)
  98         fmt = "Attribute=[A]\nSearchCount=[u]\nFlags=[w]\nLevel=[uP4]\nFile=[S]\n";
  99     else
 100         fmt = "Handle=[w]\nCount=[u]\nEOS=[w]\nEoffset=[u]\nLastNameOfs=[w]\n";
 101
 102     smb_fdata(ndo, param, fmt, param + pcnt, unicodestr);
 103     if (dcnt) {
 104         ND_PRINT("data:\n");
 105         smb_data_print(ndo, data, dcnt);
 106     }
 107 }
 108
 109 static void
 110 trans2_qfsinfo(netdissect_options *ndo,
 111                const u_char *param, const u_char *data, u_int pcnt, u_int dcnt)
 112 {
 113     static u_int level = 0;
 114     const char *fmt="";
 115
 116     if (request) {
 117         level = GET_LE_U_2(param);
 118         fmt = "InfoLevel=[u]\n";
 119         smb_fdata(ndo, param, fmt, param + pcnt, unicodestr);
 120     } else {
 121         switch (level) {
 122         case 1:
 123             fmt = "idFileSystem=[W]\nSectorUnit=[U]\nUnit=[U]\nAvail=[U]\nSectorSize=[u]\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=[U]\nVolNameLen=[lU]\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("data:\n");
 139         smb_data_print(ndo, data, dcnt);
 140     }
 141 }
 142
 143 static const struct smbfnsint trans2_fns[] = {
 144     { 0, "TRANSACT2_OPEN", 0,
 145         { "Flags2=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]\nOFun=[w]\nSize=[U]\nRes=([w, w, w, w, w])\nPath=[S]",
 146           NULL,
 147           "Handle=[u]\nAttrib=[A]\nTime=[T2]\nSize=[U]\nAccess=[w]\nType=[w]\nState=[w]\nAction=[w]\nInode=[W]\nOffErr=[u]\n|EALength=[u]\n",
 148           NULL, NULL }},
 149     { 1, "TRANSACT2_FINDFIRST", 0,
 150         { NULL, NULL, NULL, NULL, trans2_findfirst }},
 151     { 2, "TRANSACT2_FINDNEXT", 0, DEFDESCRIPT },
 152     { 3, "TRANSACT2_QFSINFO", 0,
 153         { NULL, NULL, NULL, NULL, trans2_qfsinfo }},
 154     { 4, "TRANSACT2_SETFSINFO", 0, DEFDESCRIPT },
 155     { 5, "TRANSACT2_QPATHINFO", 0, DEFDESCRIPT },
 156     { 6, "TRANSACT2_SETPATHINFO", 0, DEFDESCRIPT },
 157     { 7, "TRANSACT2_QFILEINFO", 0, DEFDESCRIPT },
 158     { 8, "TRANSACT2_SETFILEINFO", 0, DEFDESCRIPT },
 159     { 9, "TRANSACT2_FSCTL", 0, DEFDESCRIPT },
 160     { 10, "TRANSACT2_IOCTL", 0, DEFDESCRIPT },
 161     { 11, "TRANSACT2_FINDNOTIFYFIRST", 0, DEFDESCRIPT },
 162     { 12, "TRANSACT2_FINDNOTIFYNEXT", 0, DEFDESCRIPT },
 163     { 13, "TRANSACT2_MKDIR", 0, DEFDESCRIPT },
 164     { -1, NULL, 0, DEFDESCRIPT }
 165 };
 166
 167
 168 static void
 169 print_trans2(netdissect_options *ndo,
 170              const u_char *words, const u_char *dat, const u_char *buf, const u_char *maxbuf)
 171 {
 172     u_int bcc;
 173     static const struct smbfnsint *fn = &trans2_fns[0];
 174     const u_char *data, *param;
 175     const u_char *w = words + 1;
 176     const char *f1 = NULL, *f2 = NULL;
 177     u_int pcnt, dcnt;
 178
 179     ND_TCHECK_1(words);
 180     if (request) {
 181         ND_TCHECK_2(w + (14 * 2));
 182         pcnt = GET_LE_U_2(w + 9 * 2);
 183         param = buf + GET_LE_U_2(w + 10 * 2);
 184         dcnt = GET_LE_U_2(w + 11 * 2);
 185         data = buf + GET_LE_U_2(w + 12 * 2);
 186         fn = smbfindint(GET_LE_U_2(w + 14 * 2), trans2_fns);
 187     } else {
 188         if (GET_U_1(words) == 0) {
 189             ND_PRINT("%s\n", fn->name);
 190             ND_PRINT("Trans2Interim\n");
 191             return;
 192         }
 193         ND_TCHECK_2(w + (7 * 2));
 194         pcnt = GET_LE_U_2(w + 3 * 2);
 195         param = buf + GET_LE_U_2(w + 4 * 2);
 196         dcnt = GET_LE_U_2(w + 6 * 2);
 197         data = buf + GET_LE_U_2(w + 7 * 2);
 198     }
 199
 200     ND_PRINT("%s param_length=%u data_length=%u\n", fn->name, pcnt, dcnt);
 201
 202     if (request) {
 203         if (GET_U_1(words) == 8) {
 204             smb_fdata(ndo, words + 1,
 205                 "Trans2Secondary\nTotParam=[u]\nTotData=[u]\nParamCnt=[u]\nParamOff=[u]\nParamDisp=[u]\nDataCnt=[u]\nDataOff=[u]\nDataDisp=[u]\nHandle=[u]\n",
 206                 maxbuf, unicodestr);
 207             return;
 208         } else {
 209             smb_fdata(ndo, words + 1,
 210                 "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",
 211                 words + 1 + 14 * 2, unicodestr);
 212         }
 213         f1 = fn->descript.req_f1;
 214         f2 = fn->descript.req_f2;
 215     } else {
 216         smb_fdata(ndo, words + 1,
 217             "TotParam=[u]\nTotData=[u]\nRes1=[w]\nParamCnt=[u]\nParamOff=[u]\nParamDisp[u]\nDataCnt=[u]\nDataOff=[u]\nDataDisp=[u]\nSetupCnt=[b][P1]\n",
 218             words + 1 + 10 * 2, unicodestr);
 219         f1 = fn->descript.rep_f1;
 220         f2 = fn->descript.rep_f2;
 221     }
 222
 223     bcc = GET_LE_U_2(dat);
 224     ND_PRINT("smb_bcc=%u\n", bcc);
 225     if (fn->descript.fn)
 226         (*fn->descript.fn)(ndo, param, data, pcnt, dcnt);
 227     else {
 228         smb_fdata(ndo, param, f1 ? f1 : "Parameters=\n", param + pcnt, unicodestr);
 229         smb_fdata(ndo, data, f2 ? f2 : "Data=\n", data + dcnt, unicodestr);
 230     }
 231     return;
 232 trunc:
 233     nd_print_trunc(ndo);
 234 }
 235
 236 static void
 237 print_browse(netdissect_options *ndo,
 238              const u_char *param, u_int paramlen, const u_char *data, u_int datalen)
 239 {
 240     const u_char *maxbuf = data + datalen;
 241     u_int command;
 242
 243     command = GET_U_1(data);
 244
 245     smb_fdata(ndo, param, "BROWSE PACKET\n|Param ", param+paramlen, unicodestr);
 246
 247     switch (command) {
 248     case 0xF:
 249         data = smb_fdata(ndo, data,
 250             "BROWSE PACKET:\nType=[B] (LocalMasterAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[u]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nElectionVersion=[w]\nBrowserConstant=[w]\n",
 251             maxbuf, unicodestr);
 252         break;
 253
 254     case 0x1:
 255         data = smb_fdata(ndo, data,
 256             "BROWSE PACKET:\nType=[B] (HostAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[u]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nElectionVersion=[w]\nBrowserConstant=[w]\n",
 257             maxbuf, unicodestr);
 258         break;
 259
 260     case 0x2:
 261         data = smb_fdata(ndo, data,
 262             "BROWSE PACKET:\nType=[B] (AnnouncementRequest)\nFlags=[B]\nReplySystemName=[S]\n",
 263             maxbuf, unicodestr);
 264         break;
 265
 266     case 0xc:
 267         data = smb_fdata(ndo, data,
 268             "BROWSE PACKET:\nType=[B] (WorkgroupAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[u]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nCommentPointer=[W]\nServerName=[S]\n",
 269             maxbuf, unicodestr);
 270         break;
 271
 272     case 0x8:
 273         data = smb_fdata(ndo, data,
 274             "BROWSE PACKET:\nType=[B] (ElectionFrame)\nElectionVersion=[B]\nOSSummary=[W]\nUptime=[(W, W)]\nServerName=[S]\n",
 275             maxbuf, unicodestr);
 276         break;
 277
 278     case 0xb:
 279         data = smb_fdata(ndo, data,
 280             "BROWSE PACKET:\nType=[B] (BecomeBackupBrowser)\nName=[S]\n",
 281             maxbuf, unicodestr);
 282         break;
 283
 284     case 0x9:
 285         data = smb_fdata(ndo, data,
 286             "BROWSE PACKET:\nType=[B] (GetBackupList)\nListCount?=[B]\nToken=[W]\n",
 287             maxbuf, unicodestr);
 288         break;
 289
 290     case 0xa:
 291         data = smb_fdata(ndo, data,
 292             "BROWSE PACKET:\nType=[B] (BackupListResponse)\nServerCount?=[B]\nToken=[W]\n*Name=[S]\n",
 293             maxbuf, unicodestr);
 294         break;
 295
 296     case 0xd:
 297         data = smb_fdata(ndo, data,
 298             "BROWSE PACKET:\nType=[B] (MasterAnnouncement)\nMasterName=[S]\n",
 299             maxbuf, unicodestr);
 300         break;
 301
 302     case 0xe:
 303         data = smb_fdata(ndo, data,
 304             "BROWSE PACKET:\nType=[B] (ResetBrowser)\nOptions=[B]\n", maxbuf, unicodestr);
 305         break;
 306
 307     default:
 308         data = smb_fdata(ndo, data, "Unknown Browser Frame ", maxbuf, unicodestr);
 309         break;
 310     }
 311 }
 312
 313
 314 static void
 315 print_ipc(netdissect_options *ndo,
 316           const u_char *param, u_int paramlen, const u_char *data, u_int datalen)
 317 {
 318     if (paramlen)
 319         smb_fdata(ndo, param, "Command=[w]\nStr1=[S]\nStr2=[S]\n", param + paramlen,
 320             unicodestr);
 321     if (datalen)
 322         smb_fdata(ndo, data, "IPC ", data + datalen, unicodestr);
 323 }
 324
 325
 326 static void
 327 print_trans(netdissect_options *ndo,
 328             const u_char *words, const u_char *data1, const u_char *buf, const u_char *maxbuf)
 329 {
 330     u_int bcc;
 331     const char *f1, *f2, *f3, *f4;
 332     const u_char *data, *param;
 333     const u_char *w = words + 1;
 334     u_int datalen, paramlen;
 335
 336     if (request) {
 337         ND_TCHECK_2(w + (12 * 2));
 338         paramlen = GET_LE_U_2(w + 9 * 2);
 339         param = buf + GET_LE_U_2(w + 10 * 2);
 340         datalen = GET_LE_U_2(w + 11 * 2);
 341         data = buf + GET_LE_U_2(w + 12 * 2);
 342         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";
 343         f2 = "|Name=[S]\n";
 344         f3 = "|Param ";
 345         f4 = "|Data ";
 346     } else {
 347         ND_TCHECK_2(w + (7 * 2));
 348         paramlen = GET_LE_U_2(w + 3 * 2);
 349         param = buf + GET_LE_U_2(w + 4 * 2);
 350         datalen = GET_LE_U_2(w + 6 * 2);
 351         data = buf + GET_LE_U_2(w + 7 * 2);
 352         f1 = "TotParamCnt=[u]\nTotDataCnt=[u]\nRes1=[u]\nParamCnt=[u]\nParamOff=[u]\nRes2=[u]\nDataCnt=[u]\nDataOff=[u]\nRes3=[u]\nLsetup=[u]\n";
 353         f2 = "|Unknown ";
 354         f3 = "|Param ";
 355         f4 = "|Data ";
 356     }
 357
 358     smb_fdata(ndo, words + 1, f1,
 359               ND_MIN(words + 1 + 2 * GET_U_1(words), maxbuf),
 360               unicodestr);
 361
 362     bcc = GET_LE_U_2(data1);
 363     ND_PRINT("smb_bcc=%u\n", bcc);
 364     if (bcc > 0) {
 365         smb_fdata(ndo, data1 + 2, f2, maxbuf - (paramlen + datalen), unicodestr);
 366
 367 #define MAILSLOT_BROWSE_STR "\\MAILSLOT\\BROWSE"
 368         ND_TCHECK_LEN(data1 + 2, strlen(MAILSLOT_BROWSE_STR) + 1);
 369         if (strcmp((const char *)(data1 + 2), MAILSLOT_BROWSE_STR) == 0) {
 370             print_browse(ndo, param, paramlen, data, datalen);
 371             return;
 372         }
 373 #undef MAILSLOT_BROWSE_STR
 374
 375 #define PIPE_LANMAN_STR "\\PIPE\\LANMAN"
 376         ND_TCHECK_LEN(data1 + 2, strlen(PIPE_LANMAN_STR) + 1);
 377         if (strcmp((const char *)(data1 + 2), PIPE_LANMAN_STR) == 0) {
 378             print_ipc(ndo, param, paramlen, data, datalen);
 379             return;
 380         }
 381 #undef PIPE_LANMAN_STR
 382
 383         if (paramlen)
 384             smb_fdata(ndo, param, f3, ND_MIN(param + paramlen, maxbuf), unicodestr);
 385         if (datalen)
 386             smb_fdata(ndo, data, f4, ND_MIN(data + datalen, maxbuf), unicodestr);
 387     }
 388     return;
 389 trunc:
 390     nd_print_trunc(ndo);
 391 }
 392
 393
 394 static void
 395 print_negprot(netdissect_options *ndo,
 396               const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 397 {
 398     u_int wct, bcc;
 399     const char *f1 = NULL, *f2 = NULL;
 400
 401     wct = GET_U_1(words);
 402     if (request)
 403         f2 = "*|Dialect=[Y]\n";
 404     else {
 405         if (wct == 1)
 406             f1 = "Core Protocol\nDialectIndex=[u]";
 407         else if (wct == 17)
 408             f1 = "NT1 Protocol\nDialectIndex=[u]\nSecMode=[B]\nMaxMux=[u]\nNumVcs=[u]\nMaxBuffer=[U]\nRawSize=[U]\nSessionKey=[W]\nCapabilities=[W]\nServerTime=[T3]TimeZone=[u]\nCryptKey=";
 409         else if (wct == 13)
 410             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=";
 411     }
 412
 413     if (f1)
 414         smb_fdata(ndo, words + 1, f1, ND_MIN(words + 1 + wct * 2, maxbuf),
 415             unicodestr);
 416     else
 417         smb_data_print(ndo, words + 1,
 418                        ND_MIN(wct * 2, ND_BYTES_BETWEEN(words + 1, maxbuf)));
 419
 420     bcc = GET_LE_U_2(data);
 421     ND_PRINT("smb_bcc=%u\n", bcc);
 422     if (bcc > 0) {
 423         if (f2)
 424             smb_fdata(ndo, data + 2, f2, ND_MIN(data + 2 + GET_LE_U_2(data),
 425                                              maxbuf), unicodestr);
 426         else
 427             smb_data_print(ndo, data + 2,
 428                            ND_MIN(GET_LE_U_2(data), ND_BYTES_BETWEEN(data + 2, maxbuf)));
 429     }
 430 }
 431
 432 static void
 433 print_sesssetup(netdissect_options *ndo,
 434                 const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 435 {
 436     u_int wct, bcc;
 437     const char *f1 = NULL, *f2 = NULL;
 438
 439     wct = GET_U_1(words);
 440     if (request) {
 441         if (wct == 10)
 442             f1 = "Com2=[w]\nOff2=[u]\nBufSize=[u]\nMpxMax=[u]\nVcNum=[u]\nSessionKey=[W]\nPassLen=[u]\nCryptLen=[u]\nCryptOff=[u]\nPass&Name=\n";
 443         else
 444             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";
 445     } else {
 446         if (wct == 3) {
 447             f1 = "Com2=[w]\nOff2=[u]\nAction=[w]\n";
 448         } else if (wct == 13) {
 449             f1 = "Com2=[B]\nRes=[B]\nOff2=[u]\nAction=[w]\n";
 450             f2 = "NativeOS=[S]\nNativeLanMan=[S]\nPrimaryDomain=[S]\n";
 451         }
 452     }
 453
 454     if (f1)
 455         smb_fdata(ndo, words + 1, f1, ND_MIN(words + 1 + wct * 2, maxbuf),
 456             unicodestr);
 457     else
 458         smb_data_print(ndo, words + 1,
 459                        ND_MIN(wct * 2, ND_BYTES_BETWEEN(words + 1, maxbuf)));
 460
 461     bcc = GET_LE_U_2(data);
 462     ND_PRINT("smb_bcc=%u\n", bcc);
 463     if (bcc > 0) {
 464         if (f2)
 465             smb_fdata(ndo, data + 2, f2, ND_MIN(data + 2 + GET_LE_U_2(data),
 466                                              maxbuf), unicodestr);
 467         else
 468             smb_data_print(ndo, data + 2,
 469                            ND_MIN(GET_LE_U_2(data), ND_BYTES_BETWEEN(data + 2, maxbuf)));
 470     }
 471 }
 472
 473 static void
 474 print_lockingandx(netdissect_options *ndo,
 475                   const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 476 {
 477     u_int wct, bcc;
 478     const u_char *maxwords;
 479     const char *f1 = NULL, *f2 = NULL;
 480
 481     wct = GET_U_1(words);
 482     if (request) {
 483         f1 = "Com2=[w]\nOff2=[u]\nHandle=[u]\nLockType=[w]\nTimeOut=[D]\nUnlockCount=[u]\nLockCount=[u]\n";
 484         if (GET_U_1(words + 7) & 0x10)
 485             f2 = "*Process=[u]\n[P2]Offset=[M]\nLength=[M]\n";
 486         else
 487             f2 = "*Process=[u]\nOffset=[D]\nLength=[U]\n";
 488     } else {
 489         f1 = "Com2=[w]\nOff2=[u]\n";
 490     }
 491
 492     maxwords = ND_MIN(words + 1 + wct * 2, maxbuf);
 493     if (wct)
 494         smb_fdata(ndo, words + 1, f1, maxwords, unicodestr);
 495
 496     bcc = GET_LE_U_2(data);
 497     ND_PRINT("smb_bcc=%u\n", bcc);
 498     if (bcc > 0) {
 499         if (f2)
 500             smb_fdata(ndo, data + 2, f2, ND_MIN(data + 2 + GET_LE_U_2(data),
 501                                              maxbuf), unicodestr);
 502         else
 503             smb_data_print(ndo, data + 2,
 504                            ND_MIN(GET_LE_U_2(data), ND_BYTES_BETWEEN(data + 2, maxbuf)));
 505     }
 506 }
 507
 508
 509 static const struct smbfns smb_fns[] = {
 510     { -1, "SMBunknown", 0, DEFDESCRIPT },
 511
 512     { SMBtcon, "SMBtcon", 0,
 513         { NULL, "Path=[Z]\nPassword=[Z]\nDevice=[Z]\n",
 514           "MaxXmit=[u]\nTreeId=[u]\n", NULL,
 515           NULL } },
 516
 517     { SMBtdis, "SMBtdis", 0, DEFDESCRIPT },
 518     { SMBexit,  "SMBexit", 0, DEFDESCRIPT },
 519     { SMBioctl, "SMBioctl", 0, DEFDESCRIPT },
 520
 521     { SMBecho, "SMBecho", 0,
 522         { "ReverbCount=[u]\n", NULL,
 523           "SequenceNum=[u]\n", NULL,
 524           NULL } },
 525
 526     { SMBulogoffX, "SMBulogoffX", FLG_CHAIN, DEFDESCRIPT },
 527
 528     { SMBgetatr, "SMBgetatr", 0,
 529         { NULL, "Path=[Z]\n",
 530           "Attribute=[A]\nTime=[T2]Size=[U]\nRes=([w,w,w,w,w])\n", NULL,
 531           NULL } },
 532
 533     { SMBsetatr, "SMBsetatr", 0,
 534         { "Attribute=[A]\nTime=[T2]Res=([w,w,w,w,w])\n", "Path=[Z]\n",
 535           NULL, NULL, NULL } },
 536
 537     { SMBchkpth, "SMBchkpth", 0,
 538        { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 539
 540     { SMBsearch, "SMBsearch", 0,
 541         { "Count=[u]\nAttrib=[A]\n",
 542           "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\nRes2=[W]\n",
 543           "Count=[u]\n",
 544           "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",
 545           NULL } },
 546
 547     { SMBopen, "SMBopen", 0,
 548         { "Mode=[w]\nAttribute=[A]\n", "Path=[Z]\n",
 549           "Handle=[u]\nOAttrib=[A]\nTime=[T2]Size=[U]\nAccess=[w]\n",
 550           NULL, NULL } },
 551
 552     { SMBcreate, "SMBcreate", 0,
 553         { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[u]\n", NULL, NULL } },
 554
 555     { SMBmknew, "SMBmknew", 0,
 556         { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[u]\n", NULL, NULL } },
 557
 558     { SMBunlink, "SMBunlink", 0,
 559         { "Attrib=[A]\n", "Path=[Z]\n", NULL, NULL, NULL } },
 560
 561     { SMBread, "SMBread", 0,
 562         { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
 563           "Count=[u]\nRes=([w,w,w,w])\n", NULL, NULL } },
 564
 565     { SMBwrite, "SMBwrite", 0,
 566         { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
 567           "Count=[u]\n", NULL, NULL } },
 568
 569     { SMBclose, "SMBclose", 0,
 570         { "Handle=[u]\nTime=[T2]", NULL, NULL, NULL, NULL } },
 571
 572     { SMBmkdir, "SMBmkdir", 0,
 573         { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 574
 575     { SMBrmdir, "SMBrmdir", 0,
 576         { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 577
 578     { SMBdskattr, "SMBdskattr", 0,
 579         { NULL, NULL,
 580           "TotalUnits=[u]\nBlocksPerUnit=[u]\nBlockSize=[u]\nFreeUnits=[u]\nMedia=[w]\n",
 581           NULL, NULL } },
 582
 583     { SMBmv, "SMBmv", 0,
 584         { "Attrib=[A]\n", "OldPath=[Z]\nNewPath=[Z]\n", NULL, NULL, NULL } },
 585
 586     /*
 587      * this is a Pathworks specific call, allowing the
 588      * changing of the root path
 589      */
 590     { pSETDIR, "SMBsetdir", 0, { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 591
 592     { SMBlseek, "SMBlseek", 0,
 593         { "Handle=[u]\nMode=[w]\nOffset=[D]\n", "Offset=[D]\n", NULL, NULL, NULL } },
 594
 595     { SMBflush, "SMBflush", 0, { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 596
 597     { SMBsplopen, "SMBsplopen", 0,
 598         { "SetupLen=[u]\nMode=[w]\n", "Ident=[Z]\n", "Handle=[u]\n",
 599           NULL, NULL } },
 600
 601     { SMBsplclose, "SMBsplclose", 0,
 602         { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 603
 604     { SMBsplretq, "SMBsplretq", 0,
 605         { "MaxCount=[u]\nStartIndex=[u]\n", NULL,
 606           "Count=[u]\nIndex=[u]\n",
 607           "*Time=[T2]Status=[B]\nJobID=[u]\nSize=[U]\nRes=[B]Name=[s16]\n",
 608           NULL } },
 609
 610     { SMBsplwr, "SMBsplwr", 0,
 611         { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 612
 613     { SMBlock, "SMBlock", 0,
 614         { "Handle=[u]\nCount=[U]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
 615
 616     { SMBunlock, "SMBunlock", 0,
 617         { "Handle=[u]\nCount=[U]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
 618
 619     /* CORE+ PROTOCOL FOLLOWS */
 620
 621     { SMBreadbraw, "SMBreadbraw", 0,
 622         { "Handle=[u]\nOffset=[D]\nMaxCount=[u]\nMinCount=[u]\nTimeOut=[D]\nRes=[u]\n",
 623           NULL, NULL, NULL, NULL } },
 624
 625     { SMBwritebraw, "SMBwritebraw", 0,
 626         { "Handle=[u]\nTotalCount=[u]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\n|DataSize=[u]\nDataOff=[u]\n",
 627           NULL, "WriteRawAck", NULL, NULL } },
 628
 629     { SMBwritec, "SMBwritec", 0,
 630         { NULL, NULL, "Count=[u]\n", NULL, NULL } },
 631
 632     { SMBwriteclose, "SMBwriteclose", 0,
 633         { "Handle=[u]\nCount=[u]\nOffset=[D]\nTime=[T2]Res=([w,w,w,w,w,w])",
 634           NULL, "Count=[u]\n", NULL, NULL } },
 635
 636     { SMBlockread, "SMBlockread", 0,
 637         { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
 638           "Count=[u]\nRes=([w,w,w,w])\n", NULL, NULL } },
 639
 640     { SMBwriteunlock, "SMBwriteunlock", 0,
 641         { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
 642           "Count=[u]\n", NULL, NULL } },
 643
 644     { SMBreadBmpx, "SMBreadBmpx", 0,
 645         { "Handle=[u]\nOffset=[D]\nMaxCount=[u]\nMinCount=[u]\nTimeOut=[D]\nRes=[w]\n",
 646           NULL,
 647           "Offset=[D]\nTotCount=[u]\nRemaining=[u]\nRes=([w,w])\nDataSize=[u]\nDataOff=[u]\n",
 648           NULL, NULL } },
 649
 650     { SMBwriteBmpx, "SMBwriteBmpx", 0,
 651         { "Handle=[u]\nTotCount=[u]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\nDataSize=[u]\nDataOff=[u]\n", NULL,
 652           "Remaining=[u]\n", NULL, NULL } },
 653
 654     { SMBwriteBs, "SMBwriteBs", 0,
 655         { "Handle=[u]\nTotCount=[u]\nOffset=[D]\nRes=[W]\nDataSize=[u]\nDataOff=[u]\n",
 656           NULL, "Count=[u]\n", NULL, NULL } },
 657
 658     { SMBsetattrE, "SMBsetattrE", 0,
 659         { "Handle=[u]\nCreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]", NULL,
 660           NULL, NULL, NULL } },
 661
 662     { SMBgetattrE, "SMBgetattrE", 0,
 663         { "Handle=[u]\n", NULL,
 664           "CreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]Size=[U]\nAllocSize=[U]\nAttribute=[A]\n",
 665           NULL, NULL } },
 666
 667     { SMBtranss, "SMBtranss", 0, DEFDESCRIPT },
 668     { SMBioctls, "SMBioctls", 0, DEFDESCRIPT },
 669
 670     { SMBcopy, "SMBcopy", 0,
 671         { "TreeID2=[u]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
 672           "CopyCount=[u]\n",  "|ErrStr=[S]\n",  NULL } },
 673
 674     { SMBmove, "SMBmove", 0,
 675         { "TreeID2=[u]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
 676           "MoveCount=[u]\n",  "|ErrStr=[S]\n",  NULL } },
 677
 678     { SMBopenX, "SMBopenX", FLG_CHAIN,
 679         { "Com2=[w]\nOff2=[u]\nFlags=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]OFun=[w]\nSize=[U]\nTimeOut=[D]\nRes=[W]\n",
 680           "Path=[S]\n",
 681           "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",
 682           NULL, NULL } },
 683
 684     { SMBreadX, "SMBreadX", FLG_CHAIN,
 685         { "Com2=[w]\nOff2=[u]\nHandle=[u]\nOffset=[D]\nMaxCount=[u]\nMinCount=[u]\nTimeOut=[D]\nCountLeft=[u]\n",
 686           NULL,
 687           "Com2=[w]\nOff2=[u]\nRemaining=[u]\nRes=[W]\nDataSize=[u]\nDataOff=[u]\nRes=([w,w,w,w])\n",
 688           NULL, NULL } },
 689
 690     { SMBwriteX, "SMBwriteX", FLG_CHAIN,
 691         { "Com2=[w]\nOff2=[u]\nHandle=[u]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nCountLeft=[u]\nRes=[w]\nDataSize=[u]\nDataOff=[u]\n",
 692           NULL,
 693           "Com2=[w]\nOff2=[u]\nCount=[u]\nRemaining=[u]\nRes=[W]\n",
 694           NULL, NULL } },
 695
 696     { SMBffirst, "SMBffirst", 0,
 697         { "Count=[u]\nAttrib=[A]\n",
 698           "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\n",
 699           "Count=[u]\n",
 700           "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",
 701           NULL } },
 702
 703     { SMBfunique, "SMBfunique", 0,
 704         { "Count=[u]\nAttrib=[A]\n",
 705           "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\n",
 706           "Count=[u]\n",
 707           "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",
 708           NULL } },
 709
 710     { SMBfclose, "SMBfclose", 0,
 711         { "Count=[u]\nAttrib=[A]\n",
 712           "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\n",
 713           "Count=[u]\n",
 714           "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",
 715           NULL } },
 716
 717     { SMBfindnclose, "SMBfindnclose", 0,
 718         { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 719
 720     { SMBfindclose, "SMBfindclose", 0,
 721         { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 722
 723     { SMBsends, "SMBsends", 0,
 724         { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
 725
 726     { SMBsendstrt, "SMBsendstrt", 0,
 727         { NULL, "Source=[Z]\nDest=[Z]\n", "GroupID=[u]\n", NULL, NULL } },
 728
 729     { SMBsendend, "SMBsendend", 0,
 730         { "GroupID=[u]\n", NULL, NULL, NULL, NULL } },
 731
 732     { SMBsendtxt, "SMBsendtxt", 0,
 733         { "GroupID=[u]\n", NULL, NULL, NULL, NULL } },
 734
 735     { SMBsendb, "SMBsendb", 0,
 736         { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
 737
 738     { SMBfwdname, "SMBfwdname", 0, DEFDESCRIPT },
 739     { SMBcancelf, "SMBcancelf", 0, DEFDESCRIPT },
 740     { SMBgetmac, "SMBgetmac", 0, DEFDESCRIPT },
 741
 742     { SMBnegprot, "SMBnegprot", 0,
 743         { NULL, NULL, NULL, NULL, print_negprot } },
 744
 745     { SMBsesssetupX, "SMBsesssetupX", FLG_CHAIN,
 746         { NULL, NULL, NULL, NULL, print_sesssetup } },
 747
 748     { SMBtconX, "SMBtconX", FLG_CHAIN,
 749         { "Com2=[w]\nOff2=[u]\nFlags=[w]\nPassLen=[u]\nPasswd&Path&Device=\n",
 750           NULL, "Com2=[w]\nOff2=[u]\n", "ServiceType=[R]\n", NULL } },
 751
 752     { SMBlockingX, "SMBlockingX", FLG_CHAIN,
 753         { NULL, NULL, NULL, NULL, print_lockingandx } },
 754
 755     { SMBtrans2, "SMBtrans2", 0, { NULL, NULL, NULL, NULL, print_trans2 } },
 756
 757     { SMBtranss2, "SMBtranss2", 0, DEFDESCRIPT },
 758     { SMBctemp, "SMBctemp", 0, DEFDESCRIPT },
 759     { SMBreadBs, "SMBreadBs", 0, DEFDESCRIPT },
 760     { SMBtrans, "SMBtrans", 0, { NULL, NULL, NULL, NULL, print_trans } },
 761
 762     { SMBnttrans, "SMBnttrans", 0, DEFDESCRIPT },
 763     { SMBnttranss, "SMBnttranss", 0, DEFDESCRIPT },
 764
 765     { SMBntcreateX, "SMBntcreateX", FLG_CHAIN,
 766         { "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",
 767           "Path=[C]\n",
 768           "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",
 769           NULL, NULL } },
 770
 771     { SMBntcancel, "SMBntcancel", 0, DEFDESCRIPT },
 772
 773     { -1, NULL, 0, DEFDESCRIPT }
 774 };
 775
 776
 777 /*
 778  * print a SMB message
 779  */
 780 static void
 781 print_smb(netdissect_options *ndo,
 782           const u_char *buf, const u_char *maxbuf)
 783 {
 784     uint16_t flags2;
 785     u_int nterrcodes;
 786     u_int command;
 787     uint32_t nterror;
 788     const u_char *words, *maxwords, *data;
 789     const struct smbfns *fn;
 790     const char *fmt_smbheader =
 791         "[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";
 792     u_int smboffset;
 793
 794     ndo->ndo_protocol = "smb";
 795
 796     request = (GET_U_1(buf + 9) & 0x80) ? 0 : 1;
 797     startbuf = buf;
 798
 799     command = GET_U_1(buf + 4);
 800
 801     fn = smbfind(command, smb_fns);
 802
 803     if (ndo->ndo_vflag > 1)
 804         ND_PRINT("\n");
 805
 806     ND_PRINT("SMB PACKET: %s (%s)", fn->name, request ? "REQUEST" : "REPLY");
 807
 808     if (ndo->ndo_vflag < 2)
 809         return;
 810
 811     ND_PRINT("\n");
 812     flags2 = GET_LE_U_2(buf + 10);
 813     unicodestr = flags2 & 0x8000;
 814     nterrcodes = flags2 & 0x4000;
 815
 816     /* print out the header */
 817     smb_fdata(ndo, buf, fmt_smbheader, buf + 33, unicodestr);
 818
 819     if (nterrcodes) {
 820         nterror = GET_LE_U_4(buf + 5);
 821         if (nterror)
 822             ND_PRINT("NTError = %s\n", nt_errstr(nterror));
 823     } else {
 824         if (GET_U_1(buf + 5))
 825             ND_PRINT("SMBError = %s\n", smb_errstr(GET_U_1(buf + 5),
 826                                                    GET_LE_U_2(buf + 7)));
 827     }
 828
 829     smboffset = 32;
 830
 831     for (;;) {
 832         const char *f1, *f2;
 833         int wct;
 834         u_int bcc;
 835         u_int newsmboffset;
 836
 837         words = buf + smboffset;
 838         wct = GET_U_1(words);
 839         data = words + 1 + wct * 2;
 840         maxwords = ND_MIN(data, maxbuf);
 841
 842         if (request) {
 843             f1 = fn->descript.req_f1;
 844             f2 = fn->descript.req_f2;
 845         } else {
 846             f1 = fn->descript.rep_f1;
 847             f2 = fn->descript.rep_f2;
 848         }
 849
 850         smb_reset();
 851         if (fn->descript.fn)
 852             (*fn->descript.fn)(ndo, words, data, buf, maxbuf);
 853         else {
 854             if (wct) {
 855                 if (f1)
 856                     smb_fdata(ndo, words + 1, f1, words + 1 + wct * 2, unicodestr);
 857                 else {
 858                     u_int i;
 859                     u_int v;
 860
 861                     for (i = 0; words + 1 + 2 * i < maxwords; i++) {
 862                         v = GET_LE_U_2(words + 1 + 2 * i);
 863                         ND_PRINT("smb_vwv[%u]=%u (0x%X)\n", i, v, v);
 864                     }
 865                 }
 866             }
 867
 868             bcc = GET_LE_U_2(data);
 869             ND_PRINT("smb_bcc=%u\n", bcc);
 870             if (f2) {
 871                 if (bcc > 0)
 872                     smb_fdata(ndo, data + 2, f2, data + 2 + bcc, unicodestr);
 873             } else {
 874                 if (bcc > 0) {
 875                     ND_PRINT("smb_buf[]=\n");
 876                     smb_data_print(ndo, data + 2,
 877                                    ND_MIN(bcc, ND_BYTES_BETWEEN(data + 2, maxbuf)));
 878                 }
 879             }
 880         }
 881
 882         if ((fn->flags & FLG_CHAIN) == 0)
 883             break;
 884         if (wct == 0)
 885             break;
 886         command = GET_U_1(words + 1);
 887         if (command == 0xFF)
 888             break;
 889         newsmboffset = GET_LE_U_2(words + 3);
 890
 891         fn = smbfind(command, smb_fns);
 892
 893         ND_PRINT("\nSMB PACKET: %s (%s) (CHAINED)\n",
 894             fn->name, request ? "REQUEST" : "REPLY");
 895         if (newsmboffset <= smboffset) {
 896             ND_PRINT("Bad andX offset: %u <= %u\n", newsmboffset, smboffset);
 897             break;
 898         }
 899         smboffset = newsmboffset;
 900     }
 901 }
 902
 903
 904 /*
 905  * print a NBT packet received across tcp on port 139
 906  */
 907 void
 908 nbt_tcp_print(netdissect_options *ndo,
 909               const u_char *data, u_int length)
 910 {
 911     u_int caplen;
 912     u_int type;
 913     u_int nbt_len;
 914     const u_char *maxbuf;
 915
 916     ndo->ndo_protocol = "nbt_tcp";
 917     if (length < 4)
 918         goto trunc;
 919     if (ndo->ndo_snapend < data)
 920         goto trunc;
 921     caplen = ND_BYTES_AVAILABLE_AFTER(data);
 922     if (caplen < 4)
 923         goto trunc;
 924     maxbuf = data + caplen;
 925     type = GET_U_1(data);
 926     nbt_len = GET_BE_U_2(data + 2);
 927     length -= 4;
 928     caplen -= 4;
 929
 930     startbuf = data;
 931
 932     if (ndo->ndo_vflag < 2) {
 933         ND_PRINT(" NBT Session Packet: ");
 934         switch (type) {
 935         case 0x00:
 936             ND_PRINT("Session Message");
 937             break;
 938
 939         case 0x81:
 940             ND_PRINT("Session Request");
 941             break;
 942
 943         case 0x82:
 944             ND_PRINT("Session Granted");
 945             break;
 946
 947         case 0x83:
 948           {
 949             u_int ecode;
 950
 951             if (nbt_len < 4)
 952                 goto trunc;
 953             if (length < 4)
 954                 goto trunc;
 955             if (caplen < 4)
 956                 goto trunc;
 957             ecode = GET_U_1(data + 4);
 958
 959             ND_PRINT("Session Reject, ");
 960             switch (ecode) {
 961             case 0x80:
 962                 ND_PRINT("Not listening on called name");
 963                 break;
 964             case 0x81:
 965                 ND_PRINT("Not listening for calling name");
 966                 break;
 967             case 0x82:
 968                 ND_PRINT("Called name not present");
 969                 break;
 970             case 0x83:
 971                 ND_PRINT("Called name present, but insufficient resources");
 972                 break;
 973             default:
 974                 ND_PRINT("Unspecified error 0x%X", ecode);
 975                 break;
 976             }
 977           }
 978             break;
 979
 980         case 0x85:
 981             ND_PRINT("Session Keepalive");
 982             break;
 983
 984         default:
 985             data = smb_fdata(ndo, data, "Unknown packet type [rB]", maxbuf, 0);
 986             break;
 987         }
 988     } else {
 989         ND_PRINT("\n>>> NBT Session Packet\n");
 990         switch (type) {
 991         case 0x00:
 992             data = smb_fdata(ndo, data, "[P1]NBT Session Message\nFlags=[B]\nLength=[ru]\n",
 993                 data + 4, 0);
 994             if (data == NULL)
 995                 break;
 996             if (nbt_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
 997                 if (nbt_len > caplen) {
 998                     if (nbt_len > length)
 999                         ND_PRINT("WARNING: Packet is continued in later TCP segments\n");
1000                     else
1001                         ND_PRINT("WARNING: Short packet. Try increasing the snap length by %u\n",
1002                             nbt_len - caplen);
1003                 }
1004                 print_smb(ndo, data, maxbuf > data + nbt_len ? data + nbt_len : maxbuf);
1005             } else
1006                 ND_PRINT("Session packet:(raw data or continuation?)\n");
1007             break;
1008
1009         case 0x81:
1010             data = smb_fdata(ndo, data,
1011                 "[P1]NBT Session Request\nFlags=[B]\nLength=[ru]\nDestination=[n1]\nSource=[n1]\n",
1012                 maxbuf, 0);
1013             break;
1014
1015         case 0x82:
1016             data = smb_fdata(ndo, data, "[P1]NBT Session Granted\nFlags=[B]\nLength=[ru]\n", maxbuf, 0);
1017             break;
1018
1019         case 0x83:
1020           {
1021             const u_char *origdata;
1022             u_int ecode;
1023
1024             origdata = data;
1025             data = smb_fdata(ndo, data, "[P1]NBT SessionReject\nFlags=[B]\nLength=[ru]\nReason=[B]\n",
1026                 maxbuf, 0);
1027             if (data == NULL)
1028                 break;
1029             if (nbt_len >= 1 && caplen >= 1) {
1030                 ecode = GET_U_1(origdata + 4);
1031                 switch (ecode) {
1032                 case 0x80:
1033                     ND_PRINT("Not listening on called name\n");
1034                     break;
1035                 case 0x81:
1036                     ND_PRINT("Not listening for calling name\n");
1037                     break;
1038                 case 0x82:
1039                     ND_PRINT("Called name not present\n");
1040                     break;
1041                 case 0x83:
1042                     ND_PRINT("Called name present, but insufficient resources\n");
1043                     break;
1044                 default:
1045                     ND_PRINT("Unspecified error 0x%X\n", ecode);
1046                     break;
1047                 }
1048             }
1049           }
1050             break;
1051
1052         case 0x85:
1053             data = smb_fdata(ndo, data, "[P1]NBT Session Keepalive\nFlags=[B]\nLength=[ru]\n", maxbuf, 0);
1054             break;
1055
1056         default:
1057             data = smb_fdata(ndo, data, "NBT - Unknown packet type\nType=[B]\n", maxbuf, 0);
1058             break;
1059         }
1060     }
1061     return;
1062 trunc:
1063     nd_print_trunc(ndo);
1064 }
1065
1066 static const struct tok opcode_str[] = {
1067         { 0,  "QUERY"                   },
1068         { 5,  "REGISTRATION"            },
1069         { 6,  "RELEASE"                 },
1070         { 7,  "WACK"                    },
1071         { 8,  "REFRESH(8)"              },
1072         { 9,  "REFRESH"                 },
1073         { 15, "MULTIHOMED REGISTRATION" },
1074         { 0, NULL }
1075 };
1076
1077 /*
1078  * print a NBT packet received across udp on port 137
1079  */
1080 void
1081 nbt_udp137_print(netdissect_options *ndo,
1082                  const u_char *data, u_int length)
1083 {
1084     const u_char *maxbuf = data + length;
1085     u_int name_trn_id, response, opcode, nm_flags, rcode;
1086     u_int qdcount, ancount, nscount, arcount;
1087     const u_char *p;
1088     u_int total, i;
1089
1090     ndo->ndo_protocol = "nbt_udp137";
1091     name_trn_id = GET_BE_U_2(data);
1092     response = (GET_U_1(data + 2) >> 7);
1093     opcode = (GET_U_1(data + 2) >> 3) & 0xF;
1094     nm_flags = ((GET_U_1(data + 2) & 0x7) << 4) + (GET_U_1(data + 3) >> 4);
1095     rcode = GET_U_1(data + 3) & 0xF;
1096     qdcount = GET_BE_U_2(data + 4);
1097     ancount = GET_BE_U_2(data + 6);
1098     nscount = GET_BE_U_2(data + 8);
1099     arcount = GET_BE_U_2(data + 10);
1100     startbuf = data;
1101
1102     if (maxbuf <= data)
1103         return;
1104
1105     if (ndo->ndo_vflag > 1)
1106         ND_PRINT("\n>>> ");
1107
1108     ND_PRINT("NBT UDP PACKET(137): %s", tok2str(opcode_str, "OPUNKNOWN", opcode));
1109     if (response) {
1110         ND_PRINT("; %s", rcode ? "NEGATIVE" : "POSITIVE");
1111     }
1112     ND_PRINT("; %s; %s", response ? "RESPONSE" : "REQUEST",
1113               (nm_flags & 1) ? "BROADCAST" : "UNICAST");
1114
1115     if (ndo->ndo_vflag < 2)
1116         return;
1117
1118     ND_PRINT("\nTrnID=0x%X\nOpCode=%u\nNmFlags=0x%X\nRcode=%u\nQueryCount=%u\nAnswerCount=%u\nAuthorityCount=%u\nAddressRecCount=%u\n",
1119         name_trn_id, opcode, nm_flags, rcode, qdcount, ancount, nscount,
1120         arcount);
1121
1122     p = data + 12;
1123
1124     total = ancount + nscount + arcount;
1125
1126     if (qdcount > 100 || total > 100) {
1127         ND_PRINT("Corrupt packet??\n");
1128         return;
1129     }
1130
1131     if (qdcount) {
1132         ND_PRINT("QuestionRecords:\n");
1133         for (i = 0; i < qdcount; i++) {
1134             p = smb_fdata(ndo, p,
1135                 "|Name=[n1]\nQuestionType=[rw]\nQuestionClass=[rw]\n#",
1136                 maxbuf, 0);
1137             if (p == NULL)
1138                 goto out;
1139         }
1140     }
1141
1142     if (total) {
1143         ND_PRINT("\nResourceRecords:\n");
1144         for (i = 0; i < total; i++) {
1145             u_int rdlen;
1146             u_int restype;
1147
1148             p = smb_fdata(ndo, p, "Name=[n1]\n#", maxbuf, 0);
1149             if (p == NULL)
1150                 goto out;
1151             restype = GET_BE_U_2(p);
1152             p = smb_fdata(ndo, p, "ResType=[rw]\nResClass=[rw]\nTTL=[rU]\n", p + 8, 0);
1153             if (p == NULL)
1154                 goto out;
1155             rdlen = GET_BE_U_2(p);
1156             ND_PRINT("ResourceLength=%u\nResourceData=\n", rdlen);
1157             p += 2;
1158             if (rdlen == 6) {
1159                 p = smb_fdata(ndo, p, "AddrType=[rw]\nAddress=[b.b.b.b]\n", p + rdlen, 0);
1160                 if (p == NULL)
1161                     goto out;
1162             } else {
1163                 if (restype == 0x21) {
1164                     u_int numnames;
1165
1166                     numnames = GET_U_1(p);
1167                     p = smb_fdata(ndo, p, "NumNames=[B]\n", p + 1, 0);
1168                     if (p == NULL)
1169                         goto out;
1170                     while (numnames) {
1171                         p = smb_fdata(ndo, p, "Name=[n2]\t#", maxbuf, 0);
1172                         if (p == NULL)
1173                             goto out;
1174                         ND_TCHECK_1(p);
1175                         if (p >= maxbuf)
1176                             goto out;
1177                         if (GET_U_1(p) & 0x80)
1178                             ND_PRINT("<GROUP> ");
1179                         switch (GET_U_1(p) & 0x60) {
1180                         case 0x00: ND_PRINT("B "); break;
1181                         case 0x20: ND_PRINT("P "); break;
1182                         case 0x40: ND_PRINT("M "); break;
1183                         case 0x60: ND_PRINT("_ "); break;
1184                         }
1185                         if (GET_U_1(p) & 0x10)
1186                             ND_PRINT("<DEREGISTERING> ");
1187                         if (GET_U_1(p) & 0x08)
1188                             ND_PRINT("<CONFLICT> ");
1189                         if (GET_U_1(p) & 0x04)
1190                             ND_PRINT("<ACTIVE> ");
1191                         if (GET_U_1(p) & 0x02)
1192                             ND_PRINT("<PERMANENT> ");
1193                         ND_PRINT("\n");
1194                         p += 2;
1195                         numnames--;
1196                     }
1197                 } else {
1198                     if (p >= maxbuf)
1199                         goto out;
1200                     smb_data_print(ndo, p,
1201                                    ND_MIN(rdlen, length - ND_BYTES_BETWEEN(data, p)));
1202                     p += rdlen;
1203                 }
1204             }
1205         }
1206     }
1207
1208     if (p < maxbuf)
1209         smb_fdata(ndo, p, "AdditionalData:\n", maxbuf, 0);
1210
1211 out:
1212     return;
1213 trunc:
1214     nd_print_trunc(ndo);
1215 }
1216
1217 /*
1218  * Print an SMB-over-TCP packet received across tcp on port 445
1219  */
1220 void
1221 smb_tcp_print(netdissect_options *ndo,
1222               const u_char * data, u_int length)
1223 {
1224     u_int caplen;
1225     u_int smb_len;
1226     const u_char *maxbuf;
1227
1228     ndo->ndo_protocol = "smb_tcp";
1229     if (length < 4)
1230         goto trunc;
1231     if (ndo->ndo_snapend < data)
1232         goto trunc;
1233     caplen = ND_BYTES_AVAILABLE_AFTER(data);
1234     if (caplen < 4)
1235         goto trunc;
1236     maxbuf = data + caplen;
1237     smb_len = GET_BE_U_3(data + 1);
1238     length -= 4;
1239     caplen -= 4;
1240
1241     startbuf = data;
1242     data += 4;
1243
1244     if (smb_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1245         if (smb_len > caplen) {
1246             if (smb_len > length)
1247                 ND_PRINT(" WARNING: Packet is continued in later TCP segments\n");
1248             else
1249                 ND_PRINT(" WARNING: Short packet. Try increasing the snap length by %u\n",
1250                     smb_len - caplen);
1251         } else
1252             ND_PRINT(" ");
1253         print_smb(ndo, data, maxbuf > data + smb_len ? data + smb_len : maxbuf);
1254     } else
1255         ND_PRINT(" SMB-over-TCP packet:(raw data or continuation?)\n");
1256     return;
1257 trunc:
1258     nd_print_trunc(ndo);
1259 }
1260
1261 /*
1262  * print a NBT packet received across udp on port 138
1263  */
1264 void
1265 nbt_udp138_print(netdissect_options *ndo,
1266                  const u_char *data, u_int length)
1267 {
1268     const u_char *maxbuf = data + length;
1269
1270     ndo->ndo_protocol = "nbt_udp138";
1271     if (maxbuf > ndo->ndo_snapend)
1272         maxbuf = ndo->ndo_snapend;
1273     if (maxbuf <= data)
1274         return;
1275     startbuf = data;
1276
1277     if (ndo->ndo_vflag < 2) {
1278         ND_PRINT("NBT UDP PACKET(138)");
1279         return;
1280     }
1281
1282     data = smb_fdata(ndo, data,
1283         "\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#",
1284         maxbuf, 0);
1285
1286     if (data != NULL) {
1287         /* If there isn't enough data for "\377SMB", don't check for it. */
1288         if ((data + 3) >= maxbuf)
1289             goto out;
1290
1291         if (memcmp(data, "\377SMB",4) == 0)
1292             print_smb(ndo, data, maxbuf);
1293     }
1294 out:
1295     return;
1296 }
1297
1298
1299 /*
1300    print netbeui frames
1301 */
1302 static struct nbf_strings {
1303         const char      *name;
1304         const char      *nonverbose;
1305         const char      *verbose;
1306 } nbf_strings[0x20] = {
1307         { "Add Group Name Query", ", [P23]Name to add=[n2]#",
1308           "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1309         { "Add Name Query", ", [P23]Name to add=[n2]#",
1310           "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1311         { "Name In Conflict", NULL, NULL },
1312         { "Status Query", NULL, NULL },
1313         { NULL, NULL, NULL },   /* not used */
1314         { NULL, NULL, NULL },   /* not used */
1315         { NULL, NULL, NULL },   /* not used */
1316         { "Terminate Trace", NULL, NULL },
1317         { "Datagram", NULL,
1318           "[P7]Destination=[n2]\nSource=[n2]\n" },
1319         { "Broadcast Datagram", NULL,
1320           "[P7]Destination=[n2]\nSource=[n2]\n" },
1321         { "Name Query", ", [P7]Name=[n2]#",
1322           "[P1]SessionNumber=[B]\nNameType=[B][P2]\nResponseCorrelator=[w]\nName=[n2]\nName of sender=[n2]\n" },
1323         { NULL, NULL, NULL },   /* not used */
1324         { NULL, NULL, NULL },   /* not used */
1325         { "Add Name Response", ", [P1]GroupName=[w] [P4]Destination=[n2] Source=[n2]#",
1326           "AddNameInProcess=[B]\nGroupName=[w]\nTransmitCorrelator=[w][P2]\nDestination=[n2]\nSource=[n2]\n" },
1327         { "Name Recognized", NULL,
1328           "[P1]Data2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nDestination=[n2]\nSource=[n2]\n" },
1329         { "Status Response", NULL, NULL },
1330         { NULL, NULL, NULL },   /* not used */
1331         { NULL, NULL, NULL },   /* not used */
1332         { NULL, NULL, NULL },   /* not used */
1333         { "Terminate Trace", NULL, NULL },
1334         { "Data Ack", NULL,
1335           "[P3]TransmitCorrelator=[w][P2]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1336         { "Data First/Middle", NULL,
1337           "Flags=[{RECEIVE_CONTINUE|NO_ACK||PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1338         { "Data Only/Last", NULL,
1339           "Flags=[{|NO_ACK|PIGGYBACK_ACK_ALLOWED|PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1340         { "Session Confirm", NULL,
1341           "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1342         { "Session End", NULL,
1343           "[P1]Data2=[w][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1344         { "Session Initialize", NULL,
1345           "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1346         { "No Receive", NULL,
1347           "Flags=[{|SEND_NO_ACK}]\nDataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1348         { "Receive Outstanding", NULL,
1349           "[P1]DataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1350         { "Receive Continue", NULL,
1351           "[P2]TransmitCorrelator=[w]\n[P2]RemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1352         { NULL, NULL, NULL },   /* not used */
1353         { NULL, NULL, NULL },   /* not used */
1354         { "Session Alive", NULL, NULL }
1355 };
1356
1357 void
1358 netbeui_print(netdissect_options *ndo,
1359               u_short control, const u_char *data, u_int length)
1360 {
1361     const u_char *maxbuf = data + length;
1362     u_int len;
1363     u_int command;
1364     const u_char *data2;
1365     int is_truncated = 0;
1366
1367     ndo->ndo_protocol = "netbeui";
1368     if (maxbuf > ndo->ndo_snapend)
1369         maxbuf = ndo->ndo_snapend;
1370     len = GET_LE_U_2(data);
1371     command = GET_U_1(data + 4);
1372     data2 = data + len;
1373     if (data2 >= maxbuf) {
1374         data2 = maxbuf;
1375         is_truncated = 1;
1376     }
1377
1378     startbuf = data;
1379
1380     if (ndo->ndo_vflag < 2) {
1381         ND_PRINT("NBF Packet: ");
1382         data = smb_fdata(ndo, data, "[P5]#", maxbuf, 0);
1383     } else {
1384         ND_PRINT("\n>>> NBF Packet\nType=0x%X ", control);
1385         data = smb_fdata(ndo, data, "Length=[u] Signature=[w] Command=[B]\n#", maxbuf, 0);
1386     }
1387     if (data == NULL)
1388         goto out;
1389
1390     if (command > 0x1f || nbf_strings[command].name == NULL) {
1391         if (ndo->ndo_vflag < 2)
1392             data = smb_fdata(ndo, data, "Unknown NBF Command#", data2, 0);
1393         else
1394             data = smb_fdata(ndo, data, "Unknown NBF Command\n", data2, 0);
1395     } else {
1396         if (ndo->ndo_vflag < 2) {
1397             ND_PRINT("%s", nbf_strings[command].name);
1398             if (nbf_strings[command].nonverbose != NULL)
1399                 data = smb_fdata(ndo, data, nbf_strings[command].nonverbose, data2, 0);
1400         } else {
1401             ND_PRINT("%s:\n", nbf_strings[command].name);
1402             if (nbf_strings[command].verbose != NULL)
1403                 data = smb_fdata(ndo, data, nbf_strings[command].verbose, data2, 0);
1404             else
1405                 ND_PRINT("\n");
1406         }
1407     }
1408
1409     if (ndo->ndo_vflag < 2)
1410         return;
1411
1412     if (data == NULL)
1413         goto out;
1414
1415     if (is_truncated) {
1416         /* data2 was past the end of the buffer */
1417         goto out;
1418     }
1419
1420     /* If this isn't a command that would contain an SMB message, quit. */
1421     if (command != 0x08 && command != 0x09 && command != 0x15 &&
1422         command != 0x16)
1423         goto out;
1424
1425     /* If there isn't enough data for "\377SMB", don't look for it. */
1426     if ((data2 + 3) >= maxbuf)
1427         goto out;
1428
1429     if (memcmp(data2, "\377SMB",4) == 0)
1430         print_smb(ndo, data2, maxbuf);
1431     else {
1432         u_int i;
1433         for (i = 0; i < 128; i++) {
1434             if ((data2 + i + 3) >= maxbuf)
1435                 break;
1436             if (memcmp(data2 + i, "\377SMB", 4) == 0) {
1437                 ND_PRINT("found SMB packet at %u\n", i);
1438                 print_smb(ndo, data2 + i, maxbuf);
1439                 break;
1440             }
1441         }
1442     }
1443
1444 out:
1445     return;
1446 }
1447
1448
1449 /*
1450  * print IPX-Netbios frames
1451  */
1452 void
1453 ipx_netbios_print(netdissect_options *ndo,
1454                   const u_char *data, u_int length)
1455 {
1456     /*
1457      * this is a hack till I work out how to parse the rest of the
1458      * NetBIOS-over-IPX stuff
1459      */
1460     u_int i;
1461     const u_char *maxbuf;
1462
1463     ndo->ndo_protocol = "ipx_netbios";
1464     maxbuf = data + length;
1465     /* Don't go past the end of the captured data in the packet. */
1466     if (maxbuf > ndo->ndo_snapend)
1467         maxbuf = ndo->ndo_snapend;
1468     startbuf = data;
1469     for (i = 0; i < 128; i++) {
1470         if ((data + i + 4) > maxbuf)
1471             break;
1472         if (memcmp(data + i, "\377SMB", 4) == 0) {
1473             smb_fdata(ndo, data, "\n>>> IPX transport ", data + i, 0);
1474             print_smb(ndo, data + i, maxbuf);
1475             break;
1476         }
1477     }
1478     if (i == 128)
1479         smb_fdata(ndo, data, "\n>>> Unknown IPX ", maxbuf, 0);
1480 }