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, ND_MIN(wct * 2, ND_BYTES_BETWEEN(maxbuf, words + 1)));
 418
 419     bcc = GET_LE_U_2(data);
 420     ND_PRINT("smb_bcc=%u\n", bcc);
 421     if (bcc > 0) {
 422         if (f2)
 423             smb_fdata(ndo, data + 2, f2, ND_MIN(data + 2 + GET_LE_U_2(data),
 424                                              maxbuf), unicodestr);
 425         else
 426             smb_data_print(ndo, data + 2,
 427                            ND_MIN(GET_LE_U_2(data), ND_BYTES_BETWEEN(maxbuf, data + 2)));
 428     }
 429 }
 430
 431 static void
 432 print_sesssetup(netdissect_options *ndo,
 433                 const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 434 {
 435     u_int wct, bcc;
 436     const char *f1 = NULL, *f2 = NULL;
 437
 438     wct = GET_U_1(words);
 439     if (request) {
 440         if (wct == 10)
 441             f1 = "Com2=[w]\nOff2=[u]\nBufSize=[u]\nMpxMax=[u]\nVcNum=[u]\nSessionKey=[W]\nPassLen=[u]\nCryptLen=[u]\nCryptOff=[u]\nPass&Name=\n";
 442         else
 443             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";
 444     } else {
 445         if (wct == 3) {
 446             f1 = "Com2=[w]\nOff2=[u]\nAction=[w]\n";
 447         } else if (wct == 13) {
 448             f1 = "Com2=[B]\nRes=[B]\nOff2=[u]\nAction=[w]\n";
 449             f2 = "NativeOS=[S]\nNativeLanMan=[S]\nPrimaryDomain=[S]\n";
 450         }
 451     }
 452
 453     if (f1)
 454         smb_fdata(ndo, words + 1, f1, ND_MIN(words + 1 + wct * 2, maxbuf),
 455             unicodestr);
 456     else
 457         smb_data_print(ndo, words + 1, ND_MIN(wct * 2, ND_BYTES_BETWEEN(maxbuf, words + 1)));
 458
 459     bcc = GET_LE_U_2(data);
 460     ND_PRINT("smb_bcc=%u\n", bcc);
 461     if (bcc > 0) {
 462         if (f2)
 463             smb_fdata(ndo, data + 2, f2, ND_MIN(data + 2 + GET_LE_U_2(data),
 464                                              maxbuf), unicodestr);
 465         else
 466             smb_data_print(ndo, data + 2,
 467                            ND_MIN(GET_LE_U_2(data), ND_BYTES_BETWEEN(maxbuf, data + 2)));
 468     }
 469 }
 470
 471 static void
 472 print_lockingandx(netdissect_options *ndo,
 473                   const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 474 {
 475     u_int wct, bcc;
 476     const u_char *maxwords;
 477     const char *f1 = NULL, *f2 = NULL;
 478
 479     wct = GET_U_1(words);
 480     if (request) {
 481         f1 = "Com2=[w]\nOff2=[u]\nHandle=[u]\nLockType=[w]\nTimeOut=[D]\nUnlockCount=[u]\nLockCount=[u]\n";
 482         if (GET_U_1(words + 7) & 0x10)
 483             f2 = "*Process=[u]\n[P2]Offset=[M]\nLength=[M]\n";
 484         else
 485             f2 = "*Process=[u]\nOffset=[D]\nLength=[U]\n";
 486     } else {
 487         f1 = "Com2=[w]\nOff2=[u]\n";
 488     }
 489
 490     maxwords = ND_MIN(words + 1 + wct * 2, maxbuf);
 491     if (wct)
 492         smb_fdata(ndo, words + 1, f1, maxwords, unicodestr);
 493
 494     bcc = GET_LE_U_2(data);
 495     ND_PRINT("smb_bcc=%u\n", bcc);
 496     if (bcc > 0) {
 497         if (f2)
 498             smb_fdata(ndo, data + 2, f2, ND_MIN(data + 2 + GET_LE_U_2(data),
 499                                              maxbuf), unicodestr);
 500         else
 501             smb_data_print(ndo, data + 2,
 502                            ND_MIN(GET_LE_U_2(data), ND_BYTES_BETWEEN(maxbuf, data + 2)));
 503     }
 504 }
 505
 506
 507 static const struct smbfns smb_fns[] = {
 508     { -1, "SMBunknown", 0, DEFDESCRIPT },
 509
 510     { SMBtcon, "SMBtcon", 0,
 511         { NULL, "Path=[Z]\nPassword=[Z]\nDevice=[Z]\n",
 512           "MaxXmit=[u]\nTreeId=[u]\n", NULL,
 513           NULL } },
 514
 515     { SMBtdis, "SMBtdis", 0, DEFDESCRIPT },
 516     { SMBexit,  "SMBexit", 0, DEFDESCRIPT },
 517     { SMBioctl, "SMBioctl", 0, DEFDESCRIPT },
 518
 519     { SMBecho, "SMBecho", 0,
 520         { "ReverbCount=[u]\n", NULL,
 521           "SequenceNum=[u]\n", NULL,
 522           NULL } },
 523
 524     { SMBulogoffX, "SMBulogoffX", FLG_CHAIN, DEFDESCRIPT },
 525
 526     { SMBgetatr, "SMBgetatr", 0,
 527         { NULL, "Path=[Z]\n",
 528           "Attribute=[A]\nTime=[T2]Size=[U]\nRes=([w,w,w,w,w])\n", NULL,
 529           NULL } },
 530
 531     { SMBsetatr, "SMBsetatr", 0,
 532         { "Attribute=[A]\nTime=[T2]Res=([w,w,w,w,w])\n", "Path=[Z]\n",
 533           NULL, NULL, NULL } },
 534
 535     { SMBchkpth, "SMBchkpth", 0,
 536        { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 537
 538     { SMBsearch, "SMBsearch", 0,
 539         { "Count=[u]\nAttrib=[A]\n",
 540           "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\nRes2=[W]\n",
 541           "Count=[u]\n",
 542           "BlkType=[B]\nBlkLen=[u]\n*\nRes1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\nRes2=[W]\nAttrib=[a]\nTime=[T1]Size=[U]\nName=[s13]\n",
 543           NULL } },
 544
 545     { SMBopen, "SMBopen", 0,
 546         { "Mode=[w]\nAttribute=[A]\n", "Path=[Z]\n",
 547           "Handle=[u]\nOAttrib=[A]\nTime=[T2]Size=[U]\nAccess=[w]\n",
 548           NULL, NULL } },
 549
 550     { SMBcreate, "SMBcreate", 0,
 551         { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[u]\n", NULL, NULL } },
 552
 553     { SMBmknew, "SMBmknew", 0,
 554         { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[u]\n", NULL, NULL } },
 555
 556     { SMBunlink, "SMBunlink", 0,
 557         { "Attrib=[A]\n", "Path=[Z]\n", NULL, NULL, NULL } },
 558
 559     { SMBread, "SMBread", 0,
 560         { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
 561           "Count=[u]\nRes=([w,w,w,w])\n", NULL, NULL } },
 562
 563     { SMBwrite, "SMBwrite", 0,
 564         { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
 565           "Count=[u]\n", NULL, NULL } },
 566
 567     { SMBclose, "SMBclose", 0,
 568         { "Handle=[u]\nTime=[T2]", NULL, NULL, NULL, NULL } },
 569
 570     { SMBmkdir, "SMBmkdir", 0,
 571         { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 572
 573     { SMBrmdir, "SMBrmdir", 0,
 574         { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 575
 576     { SMBdskattr, "SMBdskattr", 0,
 577         { NULL, NULL,
 578           "TotalUnits=[u]\nBlocksPerUnit=[u]\nBlockSize=[u]\nFreeUnits=[u]\nMedia=[w]\n",
 579           NULL, NULL } },
 580
 581     { SMBmv, "SMBmv", 0,
 582         { "Attrib=[A]\n", "OldPath=[Z]\nNewPath=[Z]\n", NULL, NULL, NULL } },
 583
 584     /*
 585      * this is a Pathworks specific call, allowing the
 586      * changing of the root path
 587      */
 588     { pSETDIR, "SMBsetdir", 0, { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 589
 590     { SMBlseek, "SMBlseek", 0,
 591         { "Handle=[u]\nMode=[w]\nOffset=[D]\n", "Offset=[D]\n", NULL, NULL, NULL } },
 592
 593     { SMBflush, "SMBflush", 0, { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 594
 595     { SMBsplopen, "SMBsplopen", 0,
 596         { "SetupLen=[u]\nMode=[w]\n", "Ident=[Z]\n", "Handle=[u]\n",
 597           NULL, NULL } },
 598
 599     { SMBsplclose, "SMBsplclose", 0,
 600         { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 601
 602     { SMBsplretq, "SMBsplretq", 0,
 603         { "MaxCount=[u]\nStartIndex=[u]\n", NULL,
 604           "Count=[u]\nIndex=[u]\n",
 605           "*Time=[T2]Status=[B]\nJobID=[u]\nSize=[U]\nRes=[B]Name=[s16]\n",
 606           NULL } },
 607
 608     { SMBsplwr, "SMBsplwr", 0,
 609         { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 610
 611     { SMBlock, "SMBlock", 0,
 612         { "Handle=[u]\nCount=[U]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
 613
 614     { SMBunlock, "SMBunlock", 0,
 615         { "Handle=[u]\nCount=[U]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
 616
 617     /* CORE+ PROTOCOL FOLLOWS */
 618
 619     { SMBreadbraw, "SMBreadbraw", 0,
 620         { "Handle=[u]\nOffset=[D]\nMaxCount=[u]\nMinCount=[u]\nTimeOut=[D]\nRes=[u]\n",
 621           NULL, NULL, NULL, NULL } },
 622
 623     { SMBwritebraw, "SMBwritebraw", 0,
 624         { "Handle=[u]\nTotalCount=[u]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\n|DataSize=[u]\nDataOff=[u]\n",
 625           NULL, "WriteRawAck", NULL, NULL } },
 626
 627     { SMBwritec, "SMBwritec", 0,
 628         { NULL, NULL, "Count=[u]\n", NULL, NULL } },
 629
 630     { SMBwriteclose, "SMBwriteclose", 0,
 631         { "Handle=[u]\nCount=[u]\nOffset=[D]\nTime=[T2]Res=([w,w,w,w,w,w])",
 632           NULL, "Count=[u]\n", NULL, NULL } },
 633
 634     { SMBlockread, "SMBlockread", 0,
 635         { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
 636           "Count=[u]\nRes=([w,w,w,w])\n", NULL, NULL } },
 637
 638     { SMBwriteunlock, "SMBwriteunlock", 0,
 639         { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
 640           "Count=[u]\n", NULL, NULL } },
 641
 642     { SMBreadBmpx, "SMBreadBmpx", 0,
 643         { "Handle=[u]\nOffset=[D]\nMaxCount=[u]\nMinCount=[u]\nTimeOut=[D]\nRes=[w]\n",
 644           NULL,
 645           "Offset=[D]\nTotCount=[u]\nRemaining=[u]\nRes=([w,w])\nDataSize=[u]\nDataOff=[u]\n",
 646           NULL, NULL } },
 647
 648     { SMBwriteBmpx, "SMBwriteBmpx", 0,
 649         { "Handle=[u]\nTotCount=[u]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\nDataSize=[u]\nDataOff=[u]\n", NULL,
 650           "Remaining=[u]\n", NULL, NULL } },
 651
 652     { SMBwriteBs, "SMBwriteBs", 0,
 653         { "Handle=[u]\nTotCount=[u]\nOffset=[D]\nRes=[W]\nDataSize=[u]\nDataOff=[u]\n",
 654           NULL, "Count=[u]\n", NULL, NULL } },
 655
 656     { SMBsetattrE, "SMBsetattrE", 0,
 657         { "Handle=[u]\nCreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]", NULL,
 658           NULL, NULL, NULL } },
 659
 660     { SMBgetattrE, "SMBgetattrE", 0,
 661         { "Handle=[u]\n", NULL,
 662           "CreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]Size=[U]\nAllocSize=[U]\nAttribute=[A]\n",
 663           NULL, NULL } },
 664
 665     { SMBtranss, "SMBtranss", 0, DEFDESCRIPT },
 666     { SMBioctls, "SMBioctls", 0, DEFDESCRIPT },
 667
 668     { SMBcopy, "SMBcopy", 0,
 669         { "TreeID2=[u]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
 670           "CopyCount=[u]\n",  "|ErrStr=[S]\n",  NULL } },
 671
 672     { SMBmove, "SMBmove", 0,
 673         { "TreeID2=[u]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
 674           "MoveCount=[u]\n",  "|ErrStr=[S]\n",  NULL } },
 675
 676     { SMBopenX, "SMBopenX", FLG_CHAIN,
 677         { "Com2=[w]\nOff2=[u]\nFlags=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]OFun=[w]\nSize=[U]\nTimeOut=[D]\nRes=[W]\n",
 678           "Path=[S]\n",
 679           "Com2=[w]\nOff2=[u]\nHandle=[u]\nAttrib=[A]\nTime=[T2]Size=[U]\nAccess=[w]\nType=[w]\nState=[w]\nAction=[w]\nFileID=[W]\nRes=[w]\n",
 680           NULL, NULL } },
 681
 682     { SMBreadX, "SMBreadX", FLG_CHAIN,
 683         { "Com2=[w]\nOff2=[u]\nHandle=[u]\nOffset=[D]\nMaxCount=[u]\nMinCount=[u]\nTimeOut=[D]\nCountLeft=[u]\n",
 684           NULL,
 685           "Com2=[w]\nOff2=[u]\nRemaining=[u]\nRes=[W]\nDataSize=[u]\nDataOff=[u]\nRes=([w,w,w,w])\n",
 686           NULL, NULL } },
 687
 688     { SMBwriteX, "SMBwriteX", FLG_CHAIN,
 689         { "Com2=[w]\nOff2=[u]\nHandle=[u]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nCountLeft=[u]\nRes=[w]\nDataSize=[u]\nDataOff=[u]\n",
 690           NULL,
 691           "Com2=[w]\nOff2=[u]\nCount=[u]\nRemaining=[u]\nRes=[W]\n",
 692           NULL, NULL } },
 693
 694     { SMBffirst, "SMBffirst", 0,
 695         { "Count=[u]\nAttrib=[A]\n",
 696           "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\n",
 697           "Count=[u]\n",
 698           "BlkType=[B]\nBlkLen=[u]\n*\nRes1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\nRes2=[W]\nAttrib=[a]\nTime=[T1]Size=[U]\nName=[s13]\n",
 699           NULL } },
 700
 701     { SMBfunique, "SMBfunique", 0,
 702         { "Count=[u]\nAttrib=[A]\n",
 703           "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\n",
 704           "Count=[u]\n",
 705           "BlkType=[B]\nBlkLen=[u]\n*\nRes1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\nRes2=[W]\nAttrib=[a]\nTime=[T1]Size=[U]\nName=[s13]\n",
 706           NULL } },
 707
 708     { SMBfclose, "SMBfclose", 0,
 709         { "Count=[u]\nAttrib=[A]\n",
 710           "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\n",
 711           "Count=[u]\n",
 712           "BlkType=[B]\nBlkLen=[u]\n*\nRes1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\nRes2=[W]\nAttrib=[a]\nTime=[T1]Size=[U]\nName=[s13]\n",
 713           NULL } },
 714
 715     { SMBfindnclose, "SMBfindnclose", 0,
 716         { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 717
 718     { SMBfindclose, "SMBfindclose", 0,
 719         { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 720
 721     { SMBsends, "SMBsends", 0,
 722         { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
 723
 724     { SMBsendstrt, "SMBsendstrt", 0,
 725         { NULL, "Source=[Z]\nDest=[Z]\n", "GroupID=[u]\n", NULL, NULL } },
 726
 727     { SMBsendend, "SMBsendend", 0,
 728         { "GroupID=[u]\n", NULL, NULL, NULL, NULL } },
 729
 730     { SMBsendtxt, "SMBsendtxt", 0,
 731         { "GroupID=[u]\n", NULL, NULL, NULL, NULL } },
 732
 733     { SMBsendb, "SMBsendb", 0,
 734         { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
 735
 736     { SMBfwdname, "SMBfwdname", 0, DEFDESCRIPT },
 737     { SMBcancelf, "SMBcancelf", 0, DEFDESCRIPT },
 738     { SMBgetmac, "SMBgetmac", 0, DEFDESCRIPT },
 739
 740     { SMBnegprot, "SMBnegprot", 0,
 741         { NULL, NULL, NULL, NULL, print_negprot } },
 742
 743     { SMBsesssetupX, "SMBsesssetupX", FLG_CHAIN,
 744         { NULL, NULL, NULL, NULL, print_sesssetup } },
 745
 746     { SMBtconX, "SMBtconX", FLG_CHAIN,
 747         { "Com2=[w]\nOff2=[u]\nFlags=[w]\nPassLen=[u]\nPasswd&Path&Device=\n",
 748           NULL, "Com2=[w]\nOff2=[u]\n", "ServiceType=[R]\n", NULL } },
 749
 750     { SMBlockingX, "SMBlockingX", FLG_CHAIN,
 751         { NULL, NULL, NULL, NULL, print_lockingandx } },
 752
 753     { SMBtrans2, "SMBtrans2", 0, { NULL, NULL, NULL, NULL, print_trans2 } },
 754
 755     { SMBtranss2, "SMBtranss2", 0, DEFDESCRIPT },
 756     { SMBctemp, "SMBctemp", 0, DEFDESCRIPT },
 757     { SMBreadBs, "SMBreadBs", 0, DEFDESCRIPT },
 758     { SMBtrans, "SMBtrans", 0, { NULL, NULL, NULL, NULL, print_trans } },
 759
 760     { SMBnttrans, "SMBnttrans", 0, DEFDESCRIPT },
 761     { SMBnttranss, "SMBnttranss", 0, DEFDESCRIPT },
 762
 763     { SMBntcreateX, "SMBntcreateX", FLG_CHAIN,
 764         { "Com2=[w]\nOff2=[u]\nRes=[b]\nNameLen=[lu]\nFlags=[W]\nRootDirectoryFid=[U]\nAccessMask=[W]\nAllocationSize=[L]\nExtFileAttributes=[W]\nShareAccess=[W]\nCreateDisposition=[W]\nCreateOptions=[W]\nImpersonationLevel=[W]\nSecurityFlags=[b]\n",
 765           "Path=[C]\n",
 766           "Com2=[w]\nOff2=[u]\nOplockLevel=[b]\nFid=[u]\nCreateAction=[W]\nCreateTime=[T3]LastAccessTime=[T3]LastWriteTime=[T3]ChangeTime=[T3]ExtFileAttributes=[W]\nAllocationSize=[L]\nEndOfFile=[L]\nFileType=[w]\nDeviceState=[w]\nDirectory=[b]\n",
 767           NULL, NULL } },
 768
 769     { SMBntcancel, "SMBntcancel", 0, DEFDESCRIPT },
 770
 771     { -1, NULL, 0, DEFDESCRIPT }
 772 };
 773
 774
 775 /*
 776  * print a SMB message
 777  */
 778 static void
 779 print_smb(netdissect_options *ndo,
 780           const u_char *buf, const u_char *maxbuf)
 781 {
 782     uint16_t flags2;
 783     u_int nterrcodes;
 784     u_int command;
 785     uint32_t nterror;
 786     const u_char *words, *maxwords, *data;
 787     const struct smbfns *fn;
 788     const char *fmt_smbheader =
 789         "[P4]SMB Command   =  [B]\nError class   =  [BP1]\nError code    =  [u]\nFlags1        =  [B]\nFlags2        =  [B][P13]\nTree ID       =  [u]\nProc ID       =  [u]\nUID           =  [u]\nMID           =  [u]\nWord Count    =  [b]\n";
 790     u_int smboffset;
 791
 792     ndo->ndo_protocol = "smb";
 793
 794     request = (GET_U_1(buf + 9) & 0x80) ? 0 : 1;
 795     startbuf = buf;
 796
 797     command = GET_U_1(buf + 4);
 798
 799     fn = smbfind(command, smb_fns);
 800
 801     if (ndo->ndo_vflag > 1)
 802         ND_PRINT("\n");
 803
 804     ND_PRINT("SMB PACKET: %s (%s)", fn->name, request ? "REQUEST" : "REPLY");
 805
 806     if (ndo->ndo_vflag < 2)
 807         return;
 808
 809     ND_PRINT("\n");
 810     flags2 = GET_LE_U_2(buf + 10);
 811     unicodestr = flags2 & 0x8000;
 812     nterrcodes = flags2 & 0x4000;
 813
 814     /* print out the header */
 815     smb_fdata(ndo, buf, fmt_smbheader, buf + 33, unicodestr);
 816
 817     if (nterrcodes) {
 818         nterror = GET_LE_U_4(buf + 5);
 819         if (nterror)
 820             ND_PRINT("NTError = %s\n", nt_errstr(nterror));
 821     } else {
 822         if (GET_U_1(buf + 5))
 823             ND_PRINT("SMBError = %s\n", smb_errstr(GET_U_1(buf + 5),
 824                                                    GET_LE_U_2(buf + 7)));
 825     }
 826
 827     smboffset = 32;
 828
 829     for (;;) {
 830         const char *f1, *f2;
 831         int wct;
 832         u_int bcc;
 833         u_int newsmboffset;
 834
 835         words = buf + smboffset;
 836         wct = GET_U_1(words);
 837         data = words + 1 + wct * 2;
 838         maxwords = ND_MIN(data, maxbuf);
 839
 840         if (request) {
 841             f1 = fn->descript.req_f1;
 842             f2 = fn->descript.req_f2;
 843         } else {
 844             f1 = fn->descript.rep_f1;
 845             f2 = fn->descript.rep_f2;
 846         }
 847
 848         smb_reset();
 849         if (fn->descript.fn)
 850             (*fn->descript.fn)(ndo, words, data, buf, maxbuf);
 851         else {
 852             if (wct) {
 853                 if (f1)
 854                     smb_fdata(ndo, words + 1, f1, words + 1 + wct * 2, unicodestr);
 855                 else {
 856                     u_int i;
 857                     u_int v;
 858
 859                     for (i = 0; words + 1 + 2 * i < maxwords; i++) {
 860                         v = GET_LE_U_2(words + 1 + 2 * i);
 861                         ND_PRINT("smb_vwv[%u]=%u (0x%X)\n", i, v, v);
 862                     }
 863                 }
 864             }
 865
 866             bcc = GET_LE_U_2(data);
 867             ND_PRINT("smb_bcc=%u\n", bcc);
 868             if (f2) {
 869                 if (bcc > 0)
 870                     smb_fdata(ndo, data + 2, f2, data + 2 + bcc, unicodestr);
 871             } else {
 872                 if (bcc > 0) {
 873                     ND_PRINT("smb_buf[]=\n");
 874                     smb_data_print(ndo, data + 2, ND_MIN(bcc, ND_BYTES_BETWEEN(maxbuf, data + 2)));
 875                 }
 876             }
 877         }
 878
 879         if ((fn->flags & FLG_CHAIN) == 0)
 880             break;
 881         if (wct == 0)
 882             break;
 883         command = GET_U_1(words + 1);
 884         if (command == 0xFF)
 885             break;
 886         newsmboffset = GET_LE_U_2(words + 3);
 887
 888         fn = smbfind(command, smb_fns);
 889
 890         ND_PRINT("\nSMB PACKET: %s (%s) (CHAINED)\n",
 891             fn->name, request ? "REQUEST" : "REPLY");
 892         if (newsmboffset <= smboffset) {
 893             ND_PRINT("Bad andX offset: %u <= %u\n", newsmboffset, smboffset);
 894             break;
 895         }
 896         smboffset = newsmboffset;
 897     }
 898 }
 899
 900
 901 /*
 902  * print a NBT packet received across tcp on port 139
 903  */
 904 void
 905 nbt_tcp_print(netdissect_options *ndo,
 906               const u_char *data, u_int length)
 907 {
 908     u_int caplen;
 909     u_int type;
 910     u_int nbt_len;
 911     const u_char *maxbuf;
 912
 913     ndo->ndo_protocol = "nbt_tcp";
 914     if (length < 4)
 915         goto trunc;
 916     if (ndo->ndo_snapend < data)
 917         goto trunc;
 918     caplen = ND_BYTES_AVAILABLE_AFTER(data);
 919     if (caplen < 4)
 920         goto trunc;
 921     maxbuf = data + caplen;
 922     type = GET_U_1(data);
 923     nbt_len = GET_BE_U_2(data + 2);
 924     length -= 4;
 925     caplen -= 4;
 926
 927     startbuf = data;
 928
 929     if (ndo->ndo_vflag < 2) {
 930         ND_PRINT(" NBT Session Packet: ");
 931         switch (type) {
 932         case 0x00:
 933             ND_PRINT("Session Message");
 934             break;
 935
 936         case 0x81:
 937             ND_PRINT("Session Request");
 938             break;
 939
 940         case 0x82:
 941             ND_PRINT("Session Granted");
 942             break;
 943
 944         case 0x83:
 945           {
 946             u_int ecode;
 947
 948             if (nbt_len < 4)
 949                 goto trunc;
 950             if (length < 4)
 951                 goto trunc;
 952             if (caplen < 4)
 953                 goto trunc;
 954             ecode = GET_U_1(data + 4);
 955
 956             ND_PRINT("Session Reject, ");
 957             switch (ecode) {
 958             case 0x80:
 959                 ND_PRINT("Not listening on called name");
 960                 break;
 961             case 0x81:
 962                 ND_PRINT("Not listening for calling name");
 963                 break;
 964             case 0x82:
 965                 ND_PRINT("Called name not present");
 966                 break;
 967             case 0x83:
 968                 ND_PRINT("Called name present, but insufficient resources");
 969                 break;
 970             default:
 971                 ND_PRINT("Unspecified error 0x%X", ecode);
 972                 break;
 973             }
 974           }
 975             break;
 976
 977         case 0x85:
 978             ND_PRINT("Session Keepalive");
 979             break;
 980
 981         default:
 982             data = smb_fdata(ndo, data, "Unknown packet type [rB]", maxbuf, 0);
 983             break;
 984         }
 985     } else {
 986         ND_PRINT("\n>>> NBT Session Packet\n");
 987         switch (type) {
 988         case 0x00:
 989             data = smb_fdata(ndo, data, "[P1]NBT Session Message\nFlags=[B]\nLength=[ru]\n",
 990                 data + 4, 0);
 991             if (data == NULL)
 992                 break;
 993             if (nbt_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
 994                 if (nbt_len > caplen) {
 995                     if (nbt_len > length)
 996                         ND_PRINT("WARNING: Packet is continued in later TCP segments\n");
 997                     else
 998                         ND_PRINT("WARNING: Short packet. Try increasing the snap length by %u\n",
 999                             nbt_len - caplen);
1000                 }
1001                 print_smb(ndo, data, maxbuf > data + nbt_len ? data + nbt_len : maxbuf);
1002             } else
1003                 ND_PRINT("Session packet:(raw data or continuation?)\n");
1004             break;
1005
1006         case 0x81:
1007             data = smb_fdata(ndo, data,
1008                 "[P1]NBT Session Request\nFlags=[B]\nLength=[ru]\nDestination=[n1]\nSource=[n1]\n",
1009                 maxbuf, 0);
1010             break;
1011
1012         case 0x82:
1013             data = smb_fdata(ndo, data, "[P1]NBT Session Granted\nFlags=[B]\nLength=[ru]\n", maxbuf, 0);
1014             break;
1015
1016         case 0x83:
1017           {
1018             const u_char *origdata;
1019             u_int ecode;
1020
1021             origdata = data;
1022             data = smb_fdata(ndo, data, "[P1]NBT SessionReject\nFlags=[B]\nLength=[ru]\nReason=[B]\n",
1023                 maxbuf, 0);
1024             if (data == NULL)
1025                 break;
1026             if (nbt_len >= 1 && caplen >= 1) {
1027                 ecode = GET_U_1(origdata + 4);
1028                 switch (ecode) {
1029                 case 0x80:
1030                     ND_PRINT("Not listening on called name\n");
1031                     break;
1032                 case 0x81:
1033                     ND_PRINT("Not listening for calling name\n");
1034                     break;
1035                 case 0x82:
1036                     ND_PRINT("Called name not present\n");
1037                     break;
1038                 case 0x83:
1039                     ND_PRINT("Called name present, but insufficient resources\n");
1040                     break;
1041                 default:
1042                     ND_PRINT("Unspecified error 0x%X\n", ecode);
1043                     break;
1044                 }
1045             }
1046           }
1047             break;
1048
1049         case 0x85:
1050             data = smb_fdata(ndo, data, "[P1]NBT Session Keepalive\nFlags=[B]\nLength=[ru]\n", maxbuf, 0);
1051             break;
1052
1053         default:
1054             data = smb_fdata(ndo, data, "NBT - Unknown packet type\nType=[B]\n", maxbuf, 0);
1055             break;
1056         }
1057     }
1058     return;
1059 trunc:
1060     nd_print_trunc(ndo);
1061 }
1062
1063 static const struct tok opcode_str[] = {
1064         { 0,  "QUERY"                   },
1065         { 5,  "REGISTRATION"            },
1066         { 6,  "RELEASE"                 },
1067         { 7,  "WACK"                    },
1068         { 8,  "REFRESH(8)"              },
1069         { 9,  "REFRESH"                 },
1070         { 15, "MULTIHOMED REGISTRATION" },
1071         { 0, NULL }
1072 };
1073
1074 /*
1075  * print a NBT packet received across udp on port 137
1076  */
1077 void
1078 nbt_udp137_print(netdissect_options *ndo,
1079                  const u_char *data, u_int length)
1080 {
1081     const u_char *maxbuf = data + length;
1082     u_int name_trn_id, response, opcode, nm_flags, rcode;
1083     u_int qdcount, ancount, nscount, arcount;
1084     const u_char *p;
1085     u_int total, i;
1086
1087     ndo->ndo_protocol = "nbt_udp137";
1088     name_trn_id = GET_BE_U_2(data);
1089     response = (GET_U_1(data + 2) >> 7);
1090     opcode = (GET_U_1(data + 2) >> 3) & 0xF;
1091     nm_flags = ((GET_U_1(data + 2) & 0x7) << 4) + (GET_U_1(data + 3) >> 4);
1092     rcode = GET_U_1(data + 3) & 0xF;
1093     qdcount = GET_BE_U_2(data + 4);
1094     ancount = GET_BE_U_2(data + 6);
1095     nscount = GET_BE_U_2(data + 8);
1096     arcount = GET_BE_U_2(data + 10);
1097     startbuf = data;
1098
1099     if (maxbuf <= data)
1100         return;
1101
1102     if (ndo->ndo_vflag > 1)
1103         ND_PRINT("\n>>> ");
1104
1105     ND_PRINT("NBT UDP PACKET(137): %s", tok2str(opcode_str, "OPUNKNOWN", opcode));
1106     if (response) {
1107         ND_PRINT("; %s", rcode ? "NEGATIVE" : "POSITIVE");
1108     }
1109     ND_PRINT("; %s; %s", response ? "RESPONSE" : "REQUEST",
1110               (nm_flags & 1) ? "BROADCAST" : "UNICAST");
1111
1112     if (ndo->ndo_vflag < 2)
1113         return;
1114
1115     ND_PRINT("\nTrnID=0x%X\nOpCode=%u\nNmFlags=0x%X\nRcode=%u\nQueryCount=%u\nAnswerCount=%u\nAuthorityCount=%u\nAddressRecCount=%u\n",
1116         name_trn_id, opcode, nm_flags, rcode, qdcount, ancount, nscount,
1117         arcount);
1118
1119     p = data + 12;
1120
1121     total = ancount + nscount + arcount;
1122
1123     if (qdcount > 100 || total > 100) {
1124         ND_PRINT("Corrupt packet??\n");
1125         return;
1126     }
1127
1128     if (qdcount) {
1129         ND_PRINT("QuestionRecords:\n");
1130         for (i = 0; i < qdcount; i++) {
1131             p = smb_fdata(ndo, p,
1132                 "|Name=[n1]\nQuestionType=[rw]\nQuestionClass=[rw]\n#",
1133                 maxbuf, 0);
1134             if (p == NULL)
1135                 goto out;
1136         }
1137     }
1138
1139     if (total) {
1140         ND_PRINT("\nResourceRecords:\n");
1141         for (i = 0; i < total; i++) {
1142             u_int rdlen;
1143             u_int restype;
1144
1145             p = smb_fdata(ndo, p, "Name=[n1]\n#", maxbuf, 0);
1146             if (p == NULL)
1147                 goto out;
1148             restype = GET_BE_U_2(p);
1149             p = smb_fdata(ndo, p, "ResType=[rw]\nResClass=[rw]\nTTL=[rU]\n", p + 8, 0);
1150             if (p == NULL)
1151                 goto out;
1152             rdlen = GET_BE_U_2(p);
1153             ND_PRINT("ResourceLength=%u\nResourceData=\n", rdlen);
1154             p += 2;
1155             if (rdlen == 6) {
1156                 p = smb_fdata(ndo, p, "AddrType=[rw]\nAddress=[b.b.b.b]\n", p + rdlen, 0);
1157                 if (p == NULL)
1158                     goto out;
1159             } else {
1160                 if (restype == 0x21) {
1161                     u_int numnames;
1162
1163                     numnames = GET_U_1(p);
1164                     p = smb_fdata(ndo, p, "NumNames=[B]\n", p + 1, 0);
1165                     if (p == NULL)
1166                         goto out;
1167                     while (numnames) {
1168                         p = smb_fdata(ndo, p, "Name=[n2]\t#", maxbuf, 0);
1169                         if (p == NULL)
1170                             goto out;
1171                         ND_TCHECK_1(p);
1172                         if (p >= maxbuf)
1173                             goto out;
1174                         if (GET_U_1(p) & 0x80)
1175                             ND_PRINT("<GROUP> ");
1176                         switch (GET_U_1(p) & 0x60) {
1177                         case 0x00: ND_PRINT("B "); break;
1178                         case 0x20: ND_PRINT("P "); break;
1179                         case 0x40: ND_PRINT("M "); break;
1180                         case 0x60: ND_PRINT("_ "); break;
1181                         }
1182                         if (GET_U_1(p) & 0x10)
1183                             ND_PRINT("<DEREGISTERING> ");
1184                         if (GET_U_1(p) & 0x08)
1185                             ND_PRINT("<CONFLICT> ");
1186                         if (GET_U_1(p) & 0x04)
1187                             ND_PRINT("<ACTIVE> ");
1188                         if (GET_U_1(p) & 0x02)
1189                             ND_PRINT("<PERMANENT> ");
1190                         ND_PRINT("\n");
1191                         p += 2;
1192                         numnames--;
1193                     }
1194                 } else {
1195                     if (p >= maxbuf)
1196                         goto out;
1197                     smb_data_print(ndo, p, ND_MIN(rdlen, length - ND_BYTES_BETWEEN(p, data)));
1198                     p += rdlen;
1199                 }
1200             }
1201         }
1202     }
1203
1204     if (p < maxbuf)
1205         smb_fdata(ndo, p, "AdditionalData:\n", maxbuf, 0);
1206
1207 out:
1208     return;
1209 trunc:
1210     nd_print_trunc(ndo);
1211 }
1212
1213 /*
1214  * Print an SMB-over-TCP packet received across tcp on port 445
1215  */
1216 void
1217 smb_tcp_print(netdissect_options *ndo,
1218               const u_char * data, u_int length)
1219 {
1220     u_int caplen;
1221     u_int smb_len;
1222     const u_char *maxbuf;
1223
1224     ndo->ndo_protocol = "smb_tcp";
1225     if (length < 4)
1226         goto trunc;
1227     if (ndo->ndo_snapend < data)
1228         goto trunc;
1229     caplen = ND_BYTES_AVAILABLE_AFTER(data);
1230     if (caplen < 4)
1231         goto trunc;
1232     maxbuf = data + caplen;
1233     smb_len = GET_BE_U_3(data + 1);
1234     length -= 4;
1235     caplen -= 4;
1236
1237     startbuf = data;
1238     data += 4;
1239
1240     if (smb_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1241         if (smb_len > caplen) {
1242             if (smb_len > length)
1243                 ND_PRINT(" WARNING: Packet is continued in later TCP segments\n");
1244             else
1245                 ND_PRINT(" WARNING: Short packet. Try increasing the snap length by %u\n",
1246                     smb_len - caplen);
1247         } else
1248             ND_PRINT(" ");
1249         print_smb(ndo, data, maxbuf > data + smb_len ? data + smb_len : maxbuf);
1250     } else
1251         ND_PRINT(" SMB-over-TCP packet:(raw data or continuation?)\n");
1252     return;
1253 trunc:
1254     nd_print_trunc(ndo);
1255 }
1256
1257 /*
1258  * print a NBT packet received across udp on port 138
1259  */
1260 void
1261 nbt_udp138_print(netdissect_options *ndo,
1262                  const u_char *data, u_int length)
1263 {
1264     const u_char *maxbuf = data + length;
1265
1266     ndo->ndo_protocol = "nbt_udp138";
1267     if (maxbuf > ndo->ndo_snapend)
1268         maxbuf = ndo->ndo_snapend;
1269     if (maxbuf <= data)
1270         return;
1271     startbuf = data;
1272
1273     if (ndo->ndo_vflag < 2) {
1274         ND_PRINT("NBT UDP PACKET(138)");
1275         return;
1276     }
1277
1278     data = smb_fdata(ndo, data,
1279         "\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#",
1280         maxbuf, 0);
1281
1282     if (data != NULL) {
1283         /* If there isn't enough data for "\377SMB", don't check for it. */
1284         if ((data + 3) >= maxbuf)
1285             goto out;
1286
1287         if (memcmp(data, "\377SMB",4) == 0)
1288             print_smb(ndo, data, maxbuf);
1289     }
1290 out:
1291     return;
1292 }
1293
1294
1295 /*
1296    print netbeui frames
1297 */
1298 static struct nbf_strings {
1299         const char      *name;
1300         const char      *nonverbose;
1301         const char      *verbose;
1302 } nbf_strings[0x20] = {
1303         { "Add Group Name Query", ", [P23]Name to add=[n2]#",
1304           "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1305         { "Add Name Query", ", [P23]Name to add=[n2]#",
1306           "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1307         { "Name In Conflict", NULL, NULL },
1308         { "Status Query", NULL, NULL },
1309         { NULL, NULL, NULL },   /* not used */
1310         { NULL, NULL, NULL },   /* not used */
1311         { NULL, NULL, NULL },   /* not used */
1312         { "Terminate Trace", NULL, NULL },
1313         { "Datagram", NULL,
1314           "[P7]Destination=[n2]\nSource=[n2]\n" },
1315         { "Broadcast Datagram", NULL,
1316           "[P7]Destination=[n2]\nSource=[n2]\n" },
1317         { "Name Query", ", [P7]Name=[n2]#",
1318           "[P1]SessionNumber=[B]\nNameType=[B][P2]\nResponseCorrelator=[w]\nName=[n2]\nName of sender=[n2]\n" },
1319         { NULL, NULL, NULL },   /* not used */
1320         { NULL, NULL, NULL },   /* not used */
1321         { "Add Name Response", ", [P1]GroupName=[w] [P4]Destination=[n2] Source=[n2]#",
1322           "AddNameInProcess=[B]\nGroupName=[w]\nTransmitCorrelator=[w][P2]\nDestination=[n2]\nSource=[n2]\n" },
1323         { "Name Recognized", NULL,
1324           "[P1]Data2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nDestination=[n2]\nSource=[n2]\n" },
1325         { "Status Response", NULL, NULL },
1326         { NULL, NULL, NULL },   /* not used */
1327         { NULL, NULL, NULL },   /* not used */
1328         { NULL, NULL, NULL },   /* not used */
1329         { "Terminate Trace", NULL, NULL },
1330         { "Data Ack", NULL,
1331           "[P3]TransmitCorrelator=[w][P2]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1332         { "Data First/Middle", NULL,
1333           "Flags=[{RECEIVE_CONTINUE|NO_ACK||PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1334         { "Data Only/Last", NULL,
1335           "Flags=[{|NO_ACK|PIGGYBACK_ACK_ALLOWED|PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1336         { "Session Confirm", NULL,
1337           "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1338         { "Session End", NULL,
1339           "[P1]Data2=[w][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1340         { "Session Initialize", NULL,
1341           "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1342         { "No Receive", NULL,
1343           "Flags=[{|SEND_NO_ACK}]\nDataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1344         { "Receive Outstanding", NULL,
1345           "[P1]DataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1346         { "Receive Continue", NULL,
1347           "[P2]TransmitCorrelator=[w]\n[P2]RemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1348         { NULL, NULL, NULL },   /* not used */
1349         { NULL, NULL, NULL },   /* not used */
1350         { "Session Alive", NULL, NULL }
1351 };
1352
1353 void
1354 netbeui_print(netdissect_options *ndo,
1355               u_short control, const u_char *data, u_int length)
1356 {
1357     const u_char *maxbuf = data + length;
1358     u_int len;
1359     u_int command;
1360     const u_char *data2;
1361     int is_truncated = 0;
1362
1363     ndo->ndo_protocol = "netbeui";
1364     if (maxbuf > ndo->ndo_snapend)
1365         maxbuf = ndo->ndo_snapend;
1366     len = GET_LE_U_2(data);
1367     command = GET_U_1(data + 4);
1368     data2 = data + len;
1369     if (data2 >= maxbuf) {
1370         data2 = maxbuf;
1371         is_truncated = 1;
1372     }
1373
1374     startbuf = data;
1375
1376     if (ndo->ndo_vflag < 2) {
1377         ND_PRINT("NBF Packet: ");
1378         data = smb_fdata(ndo, data, "[P5]#", maxbuf, 0);
1379     } else {
1380         ND_PRINT("\n>>> NBF Packet\nType=0x%X ", control);
1381         data = smb_fdata(ndo, data, "Length=[u] Signature=[w] Command=[B]\n#", maxbuf, 0);
1382     }
1383     if (data == NULL)
1384         goto out;
1385
1386     if (command > 0x1f || nbf_strings[command].name == NULL) {
1387         if (ndo->ndo_vflag < 2)
1388             data = smb_fdata(ndo, data, "Unknown NBF Command#", data2, 0);
1389         else
1390             data = smb_fdata(ndo, data, "Unknown NBF Command\n", data2, 0);
1391     } else {
1392         if (ndo->ndo_vflag < 2) {
1393             ND_PRINT("%s", nbf_strings[command].name);
1394             if (nbf_strings[command].nonverbose != NULL)
1395                 data = smb_fdata(ndo, data, nbf_strings[command].nonverbose, data2, 0);
1396         } else {
1397             ND_PRINT("%s:\n", nbf_strings[command].name);
1398             if (nbf_strings[command].verbose != NULL)
1399                 data = smb_fdata(ndo, data, nbf_strings[command].verbose, data2, 0);
1400             else
1401                 ND_PRINT("\n");
1402         }
1403     }
1404
1405     if (ndo->ndo_vflag < 2)
1406         return;
1407
1408     if (data == NULL)
1409         goto out;
1410
1411     if (is_truncated) {
1412         /* data2 was past the end of the buffer */
1413         goto out;
1414     }
1415
1416     /* If this isn't a command that would contain an SMB message, quit. */
1417     if (command != 0x08 && command != 0x09 && command != 0x15 &&
1418         command != 0x16)
1419         goto out;
1420
1421     /* If there isn't enough data for "\377SMB", don't look for it. */
1422     if ((data2 + 3) >= maxbuf)
1423         goto out;
1424
1425     if (memcmp(data2, "\377SMB",4) == 0)
1426         print_smb(ndo, data2, maxbuf);
1427     else {
1428         u_int i;
1429         for (i = 0; i < 128; i++) {
1430             if ((data2 + i + 3) >= maxbuf)
1431                 break;
1432             if (memcmp(data2 + i, "\377SMB", 4) == 0) {
1433                 ND_PRINT("found SMB packet at %u\n", i);
1434                 print_smb(ndo, data2 + i, maxbuf);
1435                 break;
1436             }
1437         }
1438     }
1439
1440 out:
1441     return;
1442 }
1443
1444
1445 /*
1446  * print IPX-Netbios frames
1447  */
1448 void
1449 ipx_netbios_print(netdissect_options *ndo,
1450                   const u_char *data, u_int length)
1451 {
1452     /*
1453      * this is a hack till I work out how to parse the rest of the
1454      * NetBIOS-over-IPX stuff
1455      */
1456     u_int i;
1457     const u_char *maxbuf;
1458
1459     ndo->ndo_protocol = "ipx_netbios";
1460     maxbuf = data + length;
1461     /* Don't go past the end of the captured data in the packet. */
1462     if (maxbuf > ndo->ndo_snapend)
1463         maxbuf = ndo->ndo_snapend;
1464     startbuf = data;
1465     for (i = 0; i < 128; i++) {
1466         if ((data + i + 4) > maxbuf)
1467             break;
1468         if (memcmp(data + i, "\377SMB", 4) == 0) {
1469             smb_fdata(ndo, data, "\n>>> IPX transport ", data + i, 0);
1470             print_smb(ndo, data + i, maxbuf);
1471             break;
1472         }
1473     }
1474     if (i == 128)
1475         smb_fdata(ndo, data, "\n>>> Unknown IPX ", maxbuf, 0);
1476 }