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 static const char tstr[] = "[|SMB]";
  24
  25 static int request = 0;
  26 static int unicodestr = 0;
  27
  28 extern const u_char *startbuf;
  29
  30 const u_char *startbuf = NULL;
  31
  32 struct smbdescript {
  33     const char *req_f1;
  34     const char *req_f2;
  35     const char *rep_f1;
  36     const char *rep_f2;
  37     void (*fn)(netdissect_options *, const u_char *, const u_char *, const u_char *, const u_char *);
  38 };
  39
  40 struct smbdescriptint {
  41     const char *req_f1;
  42     const char *req_f2;
  43     const char *rep_f1;
  44     const char *rep_f2;
  45     void (*fn)(netdissect_options *, const u_char *, const u_char *, u_int, u_int);
  46 };
  47
  48 struct smbfns
  49 {
  50     int id;
  51     const char *name;
  52     int flags;
  53     struct smbdescript descript;
  54 };
  55
  56 struct smbfnsint
  57 {
  58     int id;
  59     const char *name;
  60     int flags;
  61     struct smbdescriptint descript;
  62 };
  63
  64 #define DEFDESCRIPT     { NULL, NULL, NULL, NULL, NULL }
  65
  66 #define FLG_CHAIN       (1 << 0)
  67
  68 static const struct smbfns *
  69 smbfind(int id, const struct smbfns *list)
  70 {
  71     int sindex;
  72
  73     for (sindex = 0; list[sindex].name; sindex++)
  74         if (list[sindex].id == id)
  75             return(&list[sindex]);
  76
  77     return(&list[0]);
  78 }
  79
  80 static const struct smbfnsint *
  81 smbfindint(int id, const struct smbfnsint *list)
  82 {
  83     int sindex;
  84
  85     for (sindex = 0; list[sindex].name; sindex++)
  86         if (list[sindex].id == id)
  87             return(&list[sindex]);
  88
  89     return(&list[0]);
  90 }
  91
  92 static void
  93 trans2_findfirst(netdissect_options *ndo,
  94                  const u_char *param, const u_char *data, u_int pcnt, u_int dcnt)
  95 {
  96     const char *fmt;
  97
  98     if (request)
  99         fmt = "Attribute=[A]\nSearchCount=[u]\nFlags=[w]\nLevel=[uP4]\nFile=[S]\n";
 100     else
 101         fmt = "Handle=[w]\nCount=[u]\nEOS=[w]\nEoffset=[u]\nLastNameOfs=[w]\n";
 102
 103     smb_fdata(ndo, param, fmt, param + pcnt, unicodestr);
 104     if (dcnt) {
 105         ND_PRINT((ndo, "data:\n"));
 106         smb_print_data(ndo, data, dcnt);
 107     }
 108 }
 109
 110 static void
 111 trans2_qfsinfo(netdissect_options *ndo,
 112                const u_char *param, const u_char *data, u_int pcnt, u_int dcnt)
 113 {
 114     static u_int level = 0;
 115     const char *fmt="";
 116
 117     if (request) {
 118         ND_TCHECK_2(param);
 119         level = EXTRACT_LE_U_2(param);
 120         fmt = "InfoLevel=[u]\n";
 121         smb_fdata(ndo, param, fmt, param + pcnt, unicodestr);
 122     } else {
 123         switch (level) {
 124         case 1:
 125             fmt = "idFileSystem=[W]\nSectorUnit=[U]\nUnit=[U]\nAvail=[U]\nSectorSize=[u]\n";
 126             break;
 127         case 2:
 128             fmt = "CreationTime=[T2]VolNameLength=[lb]\nVolumeLabel=[c]\n";
 129             break;
 130         case 0x105:
 131             fmt = "Capabilities=[W]\nMaxFileLen=[U]\nVolNameLen=[lU]\nVolume=[C]\n";
 132             break;
 133         default:
 134             fmt = "UnknownLevel\n";
 135             break;
 136         }
 137         smb_fdata(ndo, data, fmt, data + dcnt, unicodestr);
 138     }
 139     if (dcnt) {
 140         ND_PRINT((ndo, "data:\n"));
 141         smb_print_data(ndo, data, dcnt);
 142     }
 143     return;
 144 trunc:
 145     ND_PRINT((ndo, "%s", tstr));
 146 }
 147
 148 static const struct smbfnsint trans2_fns[] = {
 149     { 0, "TRANSACT2_OPEN", 0,
 150         { "Flags2=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]\nOFun=[w]\nSize=[U]\nRes=([w, w, w, w, w])\nPath=[S]",
 151           NULL,
 152           "Handle=[u]\nAttrib=[A]\nTime=[T2]\nSize=[U]\nAccess=[w]\nType=[w]\nState=[w]\nAction=[w]\nInode=[W]\nOffErr=[u]\n|EALength=[u]\n",
 153           NULL, NULL }},
 154     { 1, "TRANSACT2_FINDFIRST", 0,
 155         { NULL, NULL, NULL, NULL, trans2_findfirst }},
 156     { 2, "TRANSACT2_FINDNEXT", 0, DEFDESCRIPT },
 157     { 3, "TRANSACT2_QFSINFO", 0,
 158         { NULL, NULL, NULL, NULL, trans2_qfsinfo }},
 159     { 4, "TRANSACT2_SETFSINFO", 0, DEFDESCRIPT },
 160     { 5, "TRANSACT2_QPATHINFO", 0, DEFDESCRIPT },
 161     { 6, "TRANSACT2_SETPATHINFO", 0, DEFDESCRIPT },
 162     { 7, "TRANSACT2_QFILEINFO", 0, DEFDESCRIPT },
 163     { 8, "TRANSACT2_SETFILEINFO", 0, DEFDESCRIPT },
 164     { 9, "TRANSACT2_FSCTL", 0, DEFDESCRIPT },
 165     { 10, "TRANSACT2_IOCTL", 0, DEFDESCRIPT },
 166     { 11, "TRANSACT2_FINDNOTIFYFIRST", 0, DEFDESCRIPT },
 167     { 12, "TRANSACT2_FINDNOTIFYNEXT", 0, DEFDESCRIPT },
 168     { 13, "TRANSACT2_MKDIR", 0, DEFDESCRIPT },
 169     { -1, NULL, 0, DEFDESCRIPT }
 170 };
 171
 172
 173 static void
 174 print_trans2(netdissect_options *ndo,
 175              const u_char *words, const u_char *dat, const u_char *buf, const u_char *maxbuf)
 176 {
 177     u_int bcc;
 178     static const struct smbfnsint *fn = &trans2_fns[0];
 179     const u_char *data, *param;
 180     const u_char *w = words + 1;
 181     const char *f1 = NULL, *f2 = NULL;
 182     u_int pcnt, dcnt;
 183
 184     ND_TCHECK_1(words);
 185     if (request) {
 186         ND_TCHECK_2(w + (14 * 2));
 187         pcnt = EXTRACT_LE_U_2(w + 9 * 2);
 188         param = buf + EXTRACT_LE_U_2(w + 10 * 2);
 189         dcnt = EXTRACT_LE_U_2(w + 11 * 2);
 190         data = buf + EXTRACT_LE_U_2(w + 12 * 2);
 191         fn = smbfindint(EXTRACT_LE_U_2(w + 14 * 2), trans2_fns);
 192     } else {
 193         if (EXTRACT_U_1(words) == 0) {
 194             ND_PRINT((ndo, "%s\n", fn->name));
 195             ND_PRINT((ndo, "Trans2Interim\n"));
 196             return;
 197         }
 198         ND_TCHECK_2(w + (7 * 2));
 199         pcnt = EXTRACT_LE_U_2(w + 3 * 2);
 200         param = buf + EXTRACT_LE_U_2(w + 4 * 2);
 201         dcnt = EXTRACT_LE_U_2(w + 6 * 2);
 202         data = buf + EXTRACT_LE_U_2(w + 7 * 2);
 203     }
 204
 205     ND_PRINT((ndo, "%s param_length=%u data_length=%u\n", fn->name, pcnt, dcnt));
 206
 207     if (request) {
 208         if (EXTRACT_U_1(words) == 8) {
 209             smb_fdata(ndo, words + 1,
 210                 "Trans2Secondary\nTotParam=[u]\nTotData=[u]\nParamCnt=[u]\nParamOff=[u]\nParamDisp=[u]\nDataCnt=[u]\nDataOff=[u]\nDataDisp=[u]\nHandle=[u]\n",
 211                 maxbuf, unicodestr);
 212             return;
 213         } else {
 214             smb_fdata(ndo, words + 1,
 215                 "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",
 216                 words + 1 + 14 * 2, unicodestr);
 217         }
 218         f1 = fn->descript.req_f1;
 219         f2 = fn->descript.req_f2;
 220     } else {
 221         smb_fdata(ndo, words + 1,
 222             "TotParam=[u]\nTotData=[u]\nRes1=[w]\nParamCnt=[u]\nParamOff=[u]\nParamDisp[u]\nDataCnt=[u]\nDataOff=[u]\nDataDisp=[u]\nSetupCnt=[b][P1]\n",
 223             words + 1 + 10 * 2, unicodestr);
 224         f1 = fn->descript.rep_f1;
 225         f2 = fn->descript.rep_f2;
 226     }
 227
 228     ND_TCHECK_2(dat);
 229     bcc = EXTRACT_LE_U_2(dat);
 230     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
 231     if (fn->descript.fn)
 232         (*fn->descript.fn)(ndo, param, data, pcnt, dcnt);
 233     else {
 234         smb_fdata(ndo, param, f1 ? f1 : "Parameters=\n", param + pcnt, unicodestr);
 235         smb_fdata(ndo, data, f2 ? f2 : "Data=\n", data + dcnt, unicodestr);
 236     }
 237     return;
 238 trunc:
 239     ND_PRINT((ndo, "%s", tstr));
 240 }
 241
 242 static void
 243 print_browse(netdissect_options *ndo,
 244              const u_char *param, u_int paramlen, const u_char *data, u_int datalen)
 245 {
 246     const u_char *maxbuf = data + datalen;
 247     u_int command;
 248
 249     ND_TCHECK_1(data);
 250     command = EXTRACT_U_1(data);
 251
 252     smb_fdata(ndo, param, "BROWSE PACKET\n|Param ", param+paramlen, unicodestr);
 253
 254     switch (command) {
 255     case 0xF:
 256         data = smb_fdata(ndo, data,
 257             "BROWSE PACKET:\nType=[B] (LocalMasterAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[u]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nElectionVersion=[w]\nBrowserConstant=[w]\n",
 258             maxbuf, unicodestr);
 259         break;
 260
 261     case 0x1:
 262         data = smb_fdata(ndo, data,
 263             "BROWSE PACKET:\nType=[B] (HostAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[u]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nElectionVersion=[w]\nBrowserConstant=[w]\n",
 264             maxbuf, unicodestr);
 265         break;
 266
 267     case 0x2:
 268         data = smb_fdata(ndo, data,
 269             "BROWSE PACKET:\nType=[B] (AnnouncementRequest)\nFlags=[B]\nReplySystemName=[S]\n",
 270             maxbuf, unicodestr);
 271         break;
 272
 273     case 0xc:
 274         data = smb_fdata(ndo, data,
 275             "BROWSE PACKET:\nType=[B] (WorkgroupAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[u]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nCommentPointer=[W]\nServerName=[S]\n",
 276             maxbuf, unicodestr);
 277         break;
 278
 279     case 0x8:
 280         data = smb_fdata(ndo, data,
 281             "BROWSE PACKET:\nType=[B] (ElectionFrame)\nElectionVersion=[B]\nOSSummary=[W]\nUptime=[(W, W)]\nServerName=[S]\n",
 282             maxbuf, unicodestr);
 283         break;
 284
 285     case 0xb:
 286         data = smb_fdata(ndo, data,
 287             "BROWSE PACKET:\nType=[B] (BecomeBackupBrowser)\nName=[S]\n",
 288             maxbuf, unicodestr);
 289         break;
 290
 291     case 0x9:
 292         data = smb_fdata(ndo, data,
 293             "BROWSE PACKET:\nType=[B] (GetBackupList)\nListCount?=[B]\nToken=[W]\n",
 294             maxbuf, unicodestr);
 295         break;
 296
 297     case 0xa:
 298         data = smb_fdata(ndo, data,
 299             "BROWSE PACKET:\nType=[B] (BackupListResponse)\nServerCount?=[B]\nToken=[W]\n*Name=[S]\n",
 300             maxbuf, unicodestr);
 301         break;
 302
 303     case 0xd:
 304         data = smb_fdata(ndo, data,
 305             "BROWSE PACKET:\nType=[B] (MasterAnnouncement)\nMasterName=[S]\n",
 306             maxbuf, unicodestr);
 307         break;
 308
 309     case 0xe:
 310         data = smb_fdata(ndo, data,
 311             "BROWSE PACKET:\nType=[B] (ResetBrowser)\nOptions=[B]\n", maxbuf, unicodestr);
 312         break;
 313
 314     default:
 315         data = smb_fdata(ndo, data, "Unknown Browser Frame ", maxbuf, unicodestr);
 316         break;
 317     }
 318     return;
 319 trunc:
 320     ND_PRINT((ndo, "%s", tstr));
 321 }
 322
 323
 324 static void
 325 print_ipc(netdissect_options *ndo,
 326           const u_char *param, u_int paramlen, const u_char *data, u_int datalen)
 327 {
 328     if (paramlen)
 329         smb_fdata(ndo, param, "Command=[w]\nStr1=[S]\nStr2=[S]\n", param + paramlen,
 330             unicodestr);
 331     if (datalen)
 332         smb_fdata(ndo, data, "IPC ", data + datalen, unicodestr);
 333 }
 334
 335
 336 static void
 337 print_trans(netdissect_options *ndo,
 338             const u_char *words, const u_char *data1, const u_char *buf, const u_char *maxbuf)
 339 {
 340     u_int bcc;
 341     const char *f1, *f2, *f3, *f4;
 342     const u_char *data, *param;
 343     const u_char *w = words + 1;
 344     u_int datalen, paramlen;
 345
 346     if (request) {
 347         ND_TCHECK_2(w + (12 * 2));
 348         paramlen = EXTRACT_LE_U_2(w + 9 * 2);
 349         param = buf + EXTRACT_LE_U_2(w + 10 * 2);
 350         datalen = EXTRACT_LE_U_2(w + 11 * 2);
 351         data = buf + EXTRACT_LE_U_2(w + 12 * 2);
 352         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";
 353         f2 = "|Name=[S]\n";
 354         f3 = "|Param ";
 355         f4 = "|Data ";
 356     } else {
 357         ND_TCHECK_2(w + (7 * 2));
 358         paramlen = EXTRACT_LE_U_2(w + 3 * 2);
 359         param = buf + EXTRACT_LE_U_2(w + 4 * 2);
 360         datalen = EXTRACT_LE_U_2(w + 6 * 2);
 361         data = buf + EXTRACT_LE_U_2(w + 7 * 2);
 362         f1 = "TotParamCnt=[u] \nTotDataCnt=[u] \nRes1=[u]\nParamCnt=[u] \nParamOff=[u] \nRes2=[u] \nDataCnt=[u] \nDataOff=[u] \nRes3=[u]\nLsetup=[u]\n";
 363         f2 = "|Unknown ";
 364         f3 = "|Param ";
 365         f4 = "|Data ";
 366     }
 367
 368     smb_fdata(ndo, words + 1, f1,
 369               min(words + 1 + 2 * EXTRACT_U_1(words), maxbuf),
 370               unicodestr);
 371
 372     ND_TCHECK_2(data1);
 373     bcc = EXTRACT_LE_U_2(data1);
 374     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
 375     if (bcc > 0) {
 376         smb_fdata(ndo, data1 + 2, f2, maxbuf - (paramlen + datalen), unicodestr);
 377
 378         if (strcmp((const char *)(data1 + 2), "\\MAILSLOT\\BROWSE") == 0) {
 379             print_browse(ndo, param, paramlen, data, datalen);
 380             return;
 381         }
 382
 383         if (strcmp((const char *)(data1 + 2), "\\PIPE\\LANMAN") == 0) {
 384             print_ipc(ndo, param, paramlen, data, datalen);
 385             return;
 386         }
 387
 388         if (paramlen)
 389             smb_fdata(ndo, param, f3, min(param + paramlen, maxbuf), unicodestr);
 390         if (datalen)
 391             smb_fdata(ndo, data, f4, min(data + datalen, maxbuf), unicodestr);
 392     }
 393     return;
 394 trunc:
 395     ND_PRINT((ndo, "%s", tstr));
 396 }
 397
 398
 399 static void
 400 print_negprot(netdissect_options *ndo,
 401               const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 402 {
 403     u_int wct, bcc;
 404     const char *f1 = NULL, *f2 = NULL;
 405
 406     ND_TCHECK_1(words);
 407     wct = EXTRACT_U_1(words);
 408     if (request)
 409         f2 = "*|Dialect=[Y]\n";
 410     else {
 411         if (wct == 1)
 412             f1 = "Core Protocol\nDialectIndex=[u]";
 413         else if (wct == 17)
 414             f1 = "NT1 Protocol\nDialectIndex=[u]\nSecMode=[B]\nMaxMux=[u]\nNumVcs=[u]\nMaxBuffer=[U]\nRawSize=[U]\nSessionKey=[W]\nCapabilities=[W]\nServerTime=[T3]TimeZone=[u]\nCryptKey=";
 415         else if (wct == 13)
 416             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=";
 417     }
 418
 419     if (f1)
 420         smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
 421             unicodestr);
 422     else
 423         smb_print_data(ndo, words + 1, min(wct * 2, PTR_DIFF(maxbuf, words + 1)));
 424
 425     ND_TCHECK_2(data);
 426     bcc = EXTRACT_LE_U_2(data);
 427     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
 428     if (bcc > 0) {
 429         if (f2)
 430             smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_U_2(data),
 431                                              maxbuf), unicodestr);
 432         else
 433             smb_print_data(ndo, data + 2,
 434                            min(EXTRACT_LE_U_2(data), PTR_DIFF(maxbuf, data + 2)));
 435     }
 436     return;
 437 trunc:
 438     ND_PRINT((ndo, "%s", tstr));
 439 }
 440
 441 static void
 442 print_sesssetup(netdissect_options *ndo,
 443                 const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 444 {
 445     u_int wct, bcc;
 446     const char *f1 = NULL, *f2 = NULL;
 447
 448     ND_TCHECK_1(words);
 449     wct = EXTRACT_U_1(words);
 450     if (request) {
 451         if (wct == 10)
 452             f1 = "Com2=[w]\nOff2=[u]\nBufSize=[u]\nMpxMax=[u]\nVcNum=[u]\nSessionKey=[W]\nPassLen=[u]\nCryptLen=[u]\nCryptOff=[u]\nPass&Name=\n";
 453         else
 454             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";
 455     } else {
 456         if (wct == 3) {
 457             f1 = "Com2=[w]\nOff2=[u]\nAction=[w]\n";
 458         } else if (wct == 13) {
 459             f1 = "Com2=[B]\nRes=[B]\nOff2=[u]\nAction=[w]\n";
 460             f2 = "NativeOS=[S]\nNativeLanMan=[S]\nPrimaryDomain=[S]\n";
 461         }
 462     }
 463
 464     if (f1)
 465         smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
 466             unicodestr);
 467     else
 468         smb_print_data(ndo, words + 1, min(wct * 2, PTR_DIFF(maxbuf, words + 1)));
 469
 470     ND_TCHECK_2(data);
 471     bcc = EXTRACT_LE_U_2(data);
 472     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
 473     if (bcc > 0) {
 474         if (f2)
 475             smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_U_2(data),
 476                                              maxbuf), unicodestr);
 477         else
 478             smb_print_data(ndo, data + 2,
 479                            min(EXTRACT_LE_U_2(data), PTR_DIFF(maxbuf, data + 2)));
 480     }
 481     return;
 482 trunc:
 483     ND_PRINT((ndo, "%s", tstr));
 484 }
 485
 486 static void
 487 print_lockingandx(netdissect_options *ndo,
 488                   const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 489 {
 490     u_int wct, bcc;
 491     const u_char *maxwords;
 492     const char *f1 = NULL, *f2 = NULL;
 493
 494     ND_TCHECK_1(words);
 495     wct = EXTRACT_U_1(words);
 496     if (request) {
 497         f1 = "Com2=[w]\nOff2=[u]\nHandle=[u]\nLockType=[w]\nTimeOut=[D]\nUnlockCount=[u]\nLockCount=[u]\n";
 498         ND_TCHECK_1(words + 7);
 499         if (EXTRACT_U_1(words + 7) & 0x10)
 500             f2 = "*Process=[u]\n[P2]Offset=[M]\nLength=[M]\n";
 501         else
 502             f2 = "*Process=[u]\nOffset=[D]\nLength=[U]\n";
 503     } else {
 504         f1 = "Com2=[w]\nOff2=[u]\n";
 505     }
 506
 507     maxwords = min(words + 1 + wct * 2, maxbuf);
 508     if (wct)
 509         smb_fdata(ndo, words + 1, f1, maxwords, unicodestr);
 510
 511     ND_TCHECK_2(data);
 512     bcc = EXTRACT_LE_U_2(data);
 513     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
 514     if (bcc > 0) {
 515         if (f2)
 516             smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_U_2(data),
 517                                              maxbuf), unicodestr);
 518         else
 519             smb_print_data(ndo, data + 2,
 520                            min(EXTRACT_LE_U_2(data), PTR_DIFF(maxbuf, data + 2)));
 521     }
 522     return;
 523 trunc:
 524     ND_PRINT((ndo, "%s", tstr));
 525 }
 526
 527
 528 static const struct smbfns smb_fns[] = {
 529     { -1, "SMBunknown", 0, DEFDESCRIPT },
 530
 531     { SMBtcon, "SMBtcon", 0,
 532         { NULL, "Path=[Z]\nPassword=[Z]\nDevice=[Z]\n",
 533           "MaxXmit=[u]\nTreeId=[u]\n", NULL,
 534           NULL } },
 535
 536     { SMBtdis, "SMBtdis", 0, DEFDESCRIPT },
 537     { SMBexit,  "SMBexit", 0, DEFDESCRIPT },
 538     { SMBioctl, "SMBioctl", 0, DEFDESCRIPT },
 539
 540     { SMBecho, "SMBecho", 0,
 541         { "ReverbCount=[u]\n", NULL,
 542           "SequenceNum=[u]\n", NULL,
 543           NULL } },
 544
 545     { SMBulogoffX, "SMBulogoffX", FLG_CHAIN, DEFDESCRIPT },
 546
 547     { SMBgetatr, "SMBgetatr", 0,
 548         { NULL, "Path=[Z]\n",
 549           "Attribute=[A]\nTime=[T2]Size=[U]\nRes=([w,w,w,w,w])\n", NULL,
 550           NULL } },
 551
 552     { SMBsetatr, "SMBsetatr", 0,
 553         { "Attribute=[A]\nTime=[T2]Res=([w,w,w,w,w])\n", "Path=[Z]\n",
 554           NULL, NULL, NULL } },
 555
 556     { SMBchkpth, "SMBchkpth", 0,
 557        { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 558
 559     { SMBsearch, "SMBsearch", 0,
 560         { "Count=[u]\nAttrib=[A]\n",
 561           "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\nRes2=[W]\n",
 562           "Count=[u]\n",
 563           "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",
 564           NULL } },
 565
 566     { SMBopen, "SMBopen", 0,
 567         { "Mode=[w]\nAttribute=[A]\n", "Path=[Z]\n",
 568           "Handle=[u]\nOAttrib=[A]\nTime=[T2]Size=[U]\nAccess=[w]\n",
 569           NULL, NULL } },
 570
 571     { SMBcreate, "SMBcreate", 0,
 572         { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[u]\n", NULL, NULL } },
 573
 574     { SMBmknew, "SMBmknew", 0,
 575         { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[u]\n", NULL, NULL } },
 576
 577     { SMBunlink, "SMBunlink", 0,
 578         { "Attrib=[A]\n", "Path=[Z]\n", NULL, NULL, NULL } },
 579
 580     { SMBread, "SMBread", 0,
 581         { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
 582           "Count=[u]\nRes=([w,w,w,w])\n", NULL, NULL } },
 583
 584     { SMBwrite, "SMBwrite", 0,
 585         { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
 586           "Count=[u]\n", NULL, NULL } },
 587
 588     { SMBclose, "SMBclose", 0,
 589         { "Handle=[u]\nTime=[T2]", NULL, NULL, NULL, NULL } },
 590
 591     { SMBmkdir, "SMBmkdir", 0,
 592         { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 593
 594     { SMBrmdir, "SMBrmdir", 0,
 595         { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 596
 597     { SMBdskattr, "SMBdskattr", 0,
 598         { NULL, NULL,
 599           "TotalUnits=[u]\nBlocksPerUnit=[u]\nBlockSize=[u]\nFreeUnits=[u]\nMedia=[w]\n",
 600           NULL, NULL } },
 601
 602     { SMBmv, "SMBmv", 0,
 603         { "Attrib=[A]\n", "OldPath=[Z]\nNewPath=[Z]\n", NULL, NULL, NULL } },
 604
 605     /*
 606      * this is a Pathworks specific call, allowing the
 607      * changing of the root path
 608      */
 609     { pSETDIR, "SMBsetdir", 0, { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 610
 611     { SMBlseek, "SMBlseek", 0,
 612         { "Handle=[u]\nMode=[w]\nOffset=[D]\n", "Offset=[D]\n", NULL, NULL, NULL } },
 613
 614     { SMBflush, "SMBflush", 0, { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 615
 616     { SMBsplopen, "SMBsplopen", 0,
 617         { "SetupLen=[u]\nMode=[w]\n", "Ident=[Z]\n", "Handle=[u]\n",
 618           NULL, NULL } },
 619
 620     { SMBsplclose, "SMBsplclose", 0,
 621         { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 622
 623     { SMBsplretq, "SMBsplretq", 0,
 624         { "MaxCount=[u]\nStartIndex=[u]\n", NULL,
 625           "Count=[u]\nIndex=[u]\n",
 626           "*Time=[T2]Status=[B]\nJobID=[u]\nSize=[U]\nRes=[B]Name=[s16]\n",
 627           NULL } },
 628
 629     { SMBsplwr, "SMBsplwr", 0,
 630         { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 631
 632     { SMBlock, "SMBlock", 0,
 633         { "Handle=[u]\nCount=[U]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
 634
 635     { SMBunlock, "SMBunlock", 0,
 636         { "Handle=[u]\nCount=[U]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
 637
 638     /* CORE+ PROTOCOL FOLLOWS */
 639
 640     { SMBreadbraw, "SMBreadbraw", 0,
 641         { "Handle=[u]\nOffset=[D]\nMaxCount=[u]\nMinCount=[u]\nTimeOut=[D]\nRes=[u]\n",
 642           NULL, NULL, NULL, NULL } },
 643
 644     { SMBwritebraw, "SMBwritebraw", 0,
 645         { "Handle=[u]\nTotalCount=[u]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\n|DataSize=[u]\nDataOff=[u]\n",
 646           NULL, "WriteRawAck", NULL, NULL } },
 647
 648     { SMBwritec, "SMBwritec", 0,
 649         { NULL, NULL, "Count=[u]\n", NULL, NULL } },
 650
 651     { SMBwriteclose, "SMBwriteclose", 0,
 652         { "Handle=[u]\nCount=[u]\nOffset=[D]\nTime=[T2]Res=([w,w,w,w,w,w])",
 653           NULL, "Count=[u]\n", NULL, NULL } },
 654
 655     { SMBlockread, "SMBlockread", 0,
 656         { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
 657           "Count=[u]\nRes=([w,w,w,w])\n", NULL, NULL } },
 658
 659     { SMBwriteunlock, "SMBwriteunlock", 0,
 660         { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
 661           "Count=[u]\n", NULL, NULL } },
 662
 663     { SMBreadBmpx, "SMBreadBmpx", 0,
 664         { "Handle=[u]\nOffset=[D]\nMaxCount=[u]\nMinCount=[u]\nTimeOut=[D]\nRes=[w]\n",
 665           NULL,
 666           "Offset=[D]\nTotCount=[u]\nRemaining=[u]\nRes=([w,w])\nDataSize=[u]\nDataOff=[u]\n",
 667           NULL, NULL } },
 668
 669     { SMBwriteBmpx, "SMBwriteBmpx", 0,
 670         { "Handle=[u]\nTotCount=[u]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\nDataSize=[u]\nDataOff=[u]\n", NULL,
 671           "Remaining=[u]\n", NULL, NULL } },
 672
 673     { SMBwriteBs, "SMBwriteBs", 0,
 674         { "Handle=[u]\nTotCount=[u]\nOffset=[D]\nRes=[W]\nDataSize=[u]\nDataOff=[u]\n",
 675           NULL, "Count=[u]\n", NULL, NULL } },
 676
 677     { SMBsetattrE, "SMBsetattrE", 0,
 678         { "Handle=[u]\nCreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]", NULL,
 679           NULL, NULL, NULL } },
 680
 681     { SMBgetattrE, "SMBgetattrE", 0,
 682         { "Handle=[u]\n", NULL,
 683           "CreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]Size=[U]\nAllocSize=[U]\nAttribute=[A]\n",
 684           NULL, NULL } },
 685
 686     { SMBtranss, "SMBtranss", 0, DEFDESCRIPT },
 687     { SMBioctls, "SMBioctls", 0, DEFDESCRIPT },
 688
 689     { SMBcopy, "SMBcopy", 0,
 690         { "TreeID2=[u]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
 691           "CopyCount=[u]\n",  "|ErrStr=[S]\n",  NULL } },
 692
 693     { SMBmove, "SMBmove", 0,
 694         { "TreeID2=[u]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
 695           "MoveCount=[u]\n",  "|ErrStr=[S]\n",  NULL } },
 696
 697     { SMBopenX, "SMBopenX", FLG_CHAIN,
 698         { "Com2=[w]\nOff2=[u]\nFlags=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]OFun=[w]\nSize=[U]\nTimeOut=[D]\nRes=[W]\n",
 699           "Path=[S]\n",
 700           "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",
 701           NULL, NULL } },
 702
 703     { SMBreadX, "SMBreadX", FLG_CHAIN,
 704         { "Com2=[w]\nOff2=[u]\nHandle=[u]\nOffset=[D]\nMaxCount=[u]\nMinCount=[u]\nTimeOut=[D]\nCountLeft=[u]\n",
 705           NULL,
 706           "Com2=[w]\nOff2=[u]\nRemaining=[u]\nRes=[W]\nDataSize=[u]\nDataOff=[u]\nRes=([w,w,w,w])\n",
 707           NULL, NULL } },
 708
 709     { SMBwriteX, "SMBwriteX", FLG_CHAIN,
 710         { "Com2=[w]\nOff2=[u]\nHandle=[u]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nCountLeft=[u]\nRes=[w]\nDataSize=[u]\nDataOff=[u]\n",
 711           NULL,
 712           "Com2=[w]\nOff2=[u]\nCount=[u]\nRemaining=[u]\nRes=[W]\n",
 713           NULL, NULL } },
 714
 715     { SMBffirst, "SMBffirst", 0,
 716         { "Count=[u]\nAttrib=[A]\n",
 717           "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\n",
 718           "Count=[u]\n",
 719           "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",
 720           NULL } },
 721
 722     { SMBfunique, "SMBfunique", 0,
 723         { "Count=[u]\nAttrib=[A]\n",
 724           "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\n",
 725           "Count=[u]\n",
 726           "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",
 727           NULL } },
 728
 729     { SMBfclose, "SMBfclose", 0,
 730         { "Count=[u]\nAttrib=[A]\n",
 731           "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\n",
 732           "Count=[u]\n",
 733           "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",
 734           NULL } },
 735
 736     { SMBfindnclose, "SMBfindnclose", 0,
 737         { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 738
 739     { SMBfindclose, "SMBfindclose", 0,
 740         { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 741
 742     { SMBsends, "SMBsends", 0,
 743         { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
 744
 745     { SMBsendstrt, "SMBsendstrt", 0,
 746         { NULL, "Source=[Z]\nDest=[Z]\n", "GroupID=[u]\n", NULL, NULL } },
 747
 748     { SMBsendend, "SMBsendend", 0,
 749         { "GroupID=[u]\n", NULL, NULL, NULL, NULL } },
 750
 751     { SMBsendtxt, "SMBsendtxt", 0,
 752         { "GroupID=[u]\n", NULL, NULL, NULL, NULL } },
 753
 754     { SMBsendb, "SMBsendb", 0,
 755         { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
 756
 757     { SMBfwdname, "SMBfwdname", 0, DEFDESCRIPT },
 758     { SMBcancelf, "SMBcancelf", 0, DEFDESCRIPT },
 759     { SMBgetmac, "SMBgetmac", 0, DEFDESCRIPT },
 760
 761     { SMBnegprot, "SMBnegprot", 0,
 762         { NULL, NULL, NULL, NULL, print_negprot } },
 763
 764     { SMBsesssetupX, "SMBsesssetupX", FLG_CHAIN,
 765         { NULL, NULL, NULL, NULL, print_sesssetup } },
 766
 767     { SMBtconX, "SMBtconX", FLG_CHAIN,
 768         { "Com2=[w]\nOff2=[u]\nFlags=[w]\nPassLen=[u]\nPasswd&Path&Device=\n",
 769           NULL, "Com2=[w]\nOff2=[u]\n", "ServiceType=[R]\n", NULL } },
 770
 771     { SMBlockingX, "SMBlockingX", FLG_CHAIN,
 772         { NULL, NULL, NULL, NULL, print_lockingandx } },
 773
 774     { SMBtrans2, "SMBtrans2", 0, { NULL, NULL, NULL, NULL, print_trans2 } },
 775
 776     { SMBtranss2, "SMBtranss2", 0, DEFDESCRIPT },
 777     { SMBctemp, "SMBctemp", 0, DEFDESCRIPT },
 778     { SMBreadBs, "SMBreadBs", 0, DEFDESCRIPT },
 779     { SMBtrans, "SMBtrans", 0, { NULL, NULL, NULL, NULL, print_trans } },
 780
 781     { SMBnttrans, "SMBnttrans", 0, DEFDESCRIPT },
 782     { SMBnttranss, "SMBnttranss", 0, DEFDESCRIPT },
 783
 784     { SMBntcreateX, "SMBntcreateX", FLG_CHAIN,
 785         { "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",
 786           "Path=[C]\n",
 787           "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",
 788           NULL, NULL } },
 789
 790     { SMBntcancel, "SMBntcancel", 0, DEFDESCRIPT },
 791
 792     { -1, NULL, 0, DEFDESCRIPT }
 793 };
 794
 795
 796 /*
 797  * print a SMB message
 798  */
 799 static void
 800 print_smb(netdissect_options *ndo,
 801           const u_char *buf, const u_char *maxbuf)
 802 {
 803     uint16_t flags2;
 804     u_int nterrcodes;
 805     u_int command;
 806     uint32_t nterror;
 807     const u_char *words, *maxwords, *data;
 808     const struct smbfns *fn;
 809     const char *fmt_smbheader =
 810         "[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";
 811     u_int smboffset;
 812
 813     ND_TCHECK_1(buf + 9);
 814     request = (EXTRACT_U_1(buf + 9) & 0x80) ? 0 : 1;
 815     startbuf = buf;
 816
 817     command = EXTRACT_U_1(buf + 4);
 818
 819     fn = smbfind(command, smb_fns);
 820
 821     if (ndo->ndo_vflag > 1)
 822         ND_PRINT((ndo, "\n"));
 823
 824     ND_PRINT((ndo, "SMB PACKET: %s (%s)\n", fn->name, request ? "REQUEST" : "REPLY"));
 825
 826     if (ndo->ndo_vflag < 2)
 827         return;
 828
 829     ND_TCHECK_2(buf + 10);
 830     flags2 = EXTRACT_LE_U_2(buf + 10);
 831     unicodestr = flags2 & 0x8000;
 832     nterrcodes = flags2 & 0x4000;
 833
 834     /* print out the header */
 835     smb_fdata(ndo, buf, fmt_smbheader, buf + 33, unicodestr);
 836
 837     if (nterrcodes) {
 838         nterror = EXTRACT_LE_U_4(buf + 5);
 839         if (nterror)
 840             ND_PRINT((ndo, "NTError = %s\n", nt_errstr(nterror)));
 841     } else {
 842         if (EXTRACT_U_1(buf + 5))
 843             ND_PRINT((ndo, "SMBError = %s\n", smb_errstr(EXTRACT_U_1(buf + 5),
 844                       EXTRACT_LE_U_2(buf + 7))));
 845     }
 846
 847     smboffset = 32;
 848
 849     for (;;) {
 850         const char *f1, *f2;
 851         int wct;
 852         u_int bcc;
 853         u_int newsmboffset;
 854
 855         words = buf + smboffset;
 856         ND_TCHECK_1(words);
 857         wct = EXTRACT_U_1(words);
 858         data = words + 1 + wct * 2;
 859         maxwords = min(data, maxbuf);
 860
 861         if (request) {
 862             f1 = fn->descript.req_f1;
 863             f2 = fn->descript.req_f2;
 864         } else {
 865             f1 = fn->descript.rep_f1;
 866             f2 = fn->descript.rep_f2;
 867         }
 868
 869         if (fn->descript.fn)
 870             (*fn->descript.fn)(ndo, words, data, buf, maxbuf);
 871         else {
 872             if (wct) {
 873                 if (f1)
 874                     smb_fdata(ndo, words + 1, f1, words + 1 + wct * 2, unicodestr);
 875                 else {
 876                     u_int i;
 877                     u_int v;
 878
 879                     for (i = 0; words + 1 + 2 * i < maxwords; i++) {
 880                         ND_TCHECK_2(words + 1 + 2 * i);
 881                         v = EXTRACT_LE_U_2(words + 1 + 2 * i);
 882                         ND_PRINT((ndo, "smb_vwv[%u]=%u (0x%X)\n", i, v, v));
 883                     }
 884                 }
 885             }
 886
 887             ND_TCHECK_2(data);
 888             bcc = EXTRACT_LE_U_2(data);
 889             ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
 890             if (f2) {
 891                 if (bcc > 0)
 892                     smb_fdata(ndo, data + 2, f2, data + 2 + bcc, unicodestr);
 893             } else {
 894                 if (bcc > 0) {
 895                     ND_PRINT((ndo, "smb_buf[]=\n"));
 896                     smb_print_data(ndo, data + 2, min(bcc, PTR_DIFF(maxbuf, data + 2)));
 897                 }
 898             }
 899         }
 900
 901         if ((fn->flags & FLG_CHAIN) == 0)
 902             break;
 903         if (wct == 0)
 904             break;
 905         ND_TCHECK_1(words + 1);
 906         command = EXTRACT_U_1(words + 1);
 907         if (command == 0xFF)
 908             break;
 909         ND_TCHECK_2(words + 3);
 910         newsmboffset = EXTRACT_LE_U_2(words + 3);
 911
 912         fn = smbfind(command, smb_fns);
 913
 914         ND_PRINT((ndo, "\nSMB PACKET: %s (%s) (CHAINED)\n",
 915             fn->name, request ? "REQUEST" : "REPLY"));
 916         if (newsmboffset <= smboffset) {
 917             ND_PRINT((ndo, "Bad andX offset: %u <= %u\n", newsmboffset, smboffset));
 918             break;
 919         }
 920         smboffset = newsmboffset;
 921     }
 922
 923     ND_PRINT((ndo, "\n"));
 924     return;
 925 trunc:
 926     ND_PRINT((ndo, "%s", tstr));
 927 }
 928
 929
 930 /*
 931  * print a NBT packet received across tcp on port 139
 932  */
 933 void
 934 nbt_tcp_print(netdissect_options *ndo,
 935               const u_char *data, u_int length)
 936 {
 937     u_int caplen;
 938     u_int type;
 939     u_int nbt_len;
 940     const u_char *maxbuf;
 941
 942     if (length < 4)
 943         goto trunc;
 944     if (ndo->ndo_snapend < data)
 945         goto trunc;
 946     caplen = ndo->ndo_snapend - data;
 947     if (caplen < 4)
 948         goto trunc;
 949     maxbuf = data + caplen;
 950     ND_TCHECK_1(data);
 951     type = EXTRACT_U_1(data);
 952     ND_TCHECK_2(data + 2);
 953     nbt_len = EXTRACT_BE_U_2(data + 2);
 954     length -= 4;
 955     caplen -= 4;
 956
 957     startbuf = data;
 958
 959     if (ndo->ndo_vflag < 2) {
 960         ND_PRINT((ndo, " NBT Session Packet: "));
 961         switch (type) {
 962         case 0x00:
 963             ND_PRINT((ndo, "Session Message"));
 964             break;
 965
 966         case 0x81:
 967             ND_PRINT((ndo, "Session Request"));
 968             break;
 969
 970         case 0x82:
 971             ND_PRINT((ndo, "Session Granted"));
 972             break;
 973
 974         case 0x83:
 975           {
 976             u_int ecode;
 977
 978             if (nbt_len < 4)
 979                 goto trunc;
 980             if (length < 4)
 981                 goto trunc;
 982             if (caplen < 4)
 983                 goto trunc;
 984             ecode = EXTRACT_U_1(data + 4);
 985
 986             ND_PRINT((ndo, "Session Reject, "));
 987             switch (ecode) {
 988             case 0x80:
 989                 ND_PRINT((ndo, "Not listening on called name"));
 990                 break;
 991             case 0x81:
 992                 ND_PRINT((ndo, "Not listening for calling name"));
 993                 break;
 994             case 0x82:
 995                 ND_PRINT((ndo, "Called name not present"));
 996                 break;
 997             case 0x83:
 998                 ND_PRINT((ndo, "Called name present, but insufficient resources"));
 999                 break;
1000             default:
1001                 ND_PRINT((ndo, "Unspecified error 0x%X", ecode));
1002                 break;
1003             }
1004           }
1005             break;
1006
1007         case 0x85:
1008             ND_PRINT((ndo, "Session Keepalive"));
1009             break;
1010
1011         default:
1012             data = smb_fdata(ndo, data, "Unknown packet type [rB]", maxbuf, 0);
1013             break;
1014         }
1015     } else {
1016         ND_PRINT((ndo, "\n>>> NBT Session Packet\n"));
1017         switch (type) {
1018         case 0x00:
1019             data = smb_fdata(ndo, data, "[P1]NBT Session Message\nFlags=[B]\nLength=[ru]\n",
1020                 data + 4, 0);
1021             if (data == NULL)
1022                 break;
1023             if (nbt_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1024                 if (nbt_len > caplen) {
1025                     if (nbt_len > length)
1026                         ND_PRINT((ndo, "WARNING: Packet is continued in later TCP segments\n"));
1027                     else
1028                         ND_PRINT((ndo, "WARNING: Short packet. Try increasing the snap length by %u\n",
1029                             nbt_len - caplen));
1030                 }
1031                 print_smb(ndo, data, maxbuf > data + nbt_len ? data + nbt_len : maxbuf);
1032             } else
1033                 ND_PRINT((ndo, "Session packet:(raw data or continuation?)\n"));
1034             break;
1035
1036         case 0x81:
1037             data = smb_fdata(ndo, data,
1038                 "[P1]NBT Session Request\nFlags=[B]\nLength=[ru]\nDestination=[n1]\nSource=[n1]\n",
1039                 maxbuf, 0);
1040             break;
1041
1042         case 0x82:
1043             data = smb_fdata(ndo, data, "[P1]NBT Session Granted\nFlags=[B]\nLength=[ru]\n", maxbuf, 0);
1044             break;
1045
1046         case 0x83:
1047           {
1048             const u_char *origdata;
1049             u_int ecode;
1050
1051             origdata = data;
1052             data = smb_fdata(ndo, data, "[P1]NBT SessionReject\nFlags=[B]\nLength=[ru]\nReason=[B]\n",
1053                 maxbuf, 0);
1054             if (data == NULL)
1055                 break;
1056             if (nbt_len >= 1 && caplen >= 1) {
1057                 ecode = EXTRACT_U_1(origdata + 4);
1058                 switch (ecode) {
1059                 case 0x80:
1060                     ND_PRINT((ndo, "Not listening on called name\n"));
1061                     break;
1062                 case 0x81:
1063                     ND_PRINT((ndo, "Not listening for calling name\n"));
1064                     break;
1065                 case 0x82:
1066                     ND_PRINT((ndo, "Called name not present\n"));
1067                     break;
1068                 case 0x83:
1069                     ND_PRINT((ndo, "Called name present, but insufficient resources\n"));
1070                     break;
1071                 default:
1072                     ND_PRINT((ndo, "Unspecified error 0x%X\n", ecode));
1073                     break;
1074                 }
1075             }
1076           }
1077             break;
1078
1079         case 0x85:
1080             data = smb_fdata(ndo, data, "[P1]NBT Session Keepalive\nFlags=[B]\nLength=[ru]\n", maxbuf, 0);
1081             break;
1082
1083         default:
1084             data = smb_fdata(ndo, data, "NBT - Unknown packet type\nType=[B]\n", maxbuf, 0);
1085             break;
1086         }
1087         ND_PRINT((ndo, "\n"));
1088     }
1089     return;
1090 trunc:
1091     ND_PRINT((ndo, "%s", tstr));
1092 }
1093
1094 static const struct tok opcode_str[] = {
1095         { 0,  "QUERY"                   },
1096         { 5,  "REGISTRATION"            },
1097         { 6,  "RELEASE"                 },
1098         { 7,  "WACK"                    },
1099         { 8,  "REFRESH(8)"              },
1100         { 9,  "REFRESH"                 },
1101         { 15, "MULTIHOMED REGISTRATION" },
1102         { 0, NULL }
1103 };
1104
1105 /*
1106  * print a NBT packet received across udp on port 137
1107  */
1108 void
1109 nbt_udp137_print(netdissect_options *ndo,
1110                  const u_char *data, u_int length)
1111 {
1112     const u_char *maxbuf = data + length;
1113     u_int name_trn_id, response, opcode, nm_flags, rcode;
1114     u_int qdcount, ancount, nscount, arcount;
1115     const u_char *p;
1116     u_int total, i;
1117
1118     ND_TCHECK_2(data + 10);
1119     name_trn_id = EXTRACT_BE_U_2(data);
1120     response = (EXTRACT_U_1(data + 2) >> 7);
1121     opcode = (EXTRACT_U_1(data + 2) >> 3) & 0xF;
1122     nm_flags = ((EXTRACT_U_1(data + 2) & 0x7) << 4) + (EXTRACT_U_1(data + 3) >> 4);
1123     rcode = EXTRACT_U_1(data + 3) & 0xF;
1124     qdcount = EXTRACT_BE_U_2(data + 4);
1125     ancount = EXTRACT_BE_U_2(data + 6);
1126     nscount = EXTRACT_BE_U_2(data + 8);
1127     arcount = EXTRACT_BE_U_2(data + 10);
1128     startbuf = data;
1129
1130     if (maxbuf <= data)
1131         return;
1132
1133     if (ndo->ndo_vflag > 1)
1134         ND_PRINT((ndo, "\n>>> "));
1135
1136     ND_PRINT((ndo, "NBT UDP PACKET(137): %s", tok2str(opcode_str, "OPUNKNOWN", opcode)));
1137     if (response) {
1138         ND_PRINT((ndo, "; %s", rcode ? "NEGATIVE" : "POSITIVE"));
1139     }
1140     ND_PRINT((ndo, "; %s; %s", response ? "RESPONSE" : "REQUEST",
1141               (nm_flags & 1) ? "BROADCAST" : "UNICAST"));
1142
1143     if (ndo->ndo_vflag < 2)
1144         return;
1145
1146     ND_PRINT((ndo, "\nTrnID=0x%X\nOpCode=%u\nNmFlags=0x%X\nRcode=%u\nQueryCount=%u\nAnswerCount=%u\nAuthorityCount=%u\nAddressRecCount=%u\n",
1147         name_trn_id, opcode, nm_flags, rcode, qdcount, ancount, nscount,
1148         arcount));
1149
1150     p = data + 12;
1151
1152     total = ancount + nscount + arcount;
1153
1154     if (qdcount > 100 || total > 100) {
1155         ND_PRINT((ndo, "Corrupt packet??\n"));
1156         return;
1157     }
1158
1159     if (qdcount) {
1160         ND_PRINT((ndo, "QuestionRecords:\n"));
1161         for (i = 0; i < qdcount; i++) {
1162             p = smb_fdata(ndo, p,
1163                 "|Name=[n1]\nQuestionType=[rw]\nQuestionClass=[rw]\n#",
1164                 maxbuf, 0);
1165             if (p == NULL)
1166                 goto out;
1167         }
1168     }
1169
1170     if (total) {
1171         ND_PRINT((ndo, "\nResourceRecords:\n"));
1172         for (i = 0; i < total; i++) {
1173             u_int rdlen;
1174             u_int restype;
1175
1176             p = smb_fdata(ndo, p, "Name=[n1]\n#", maxbuf, 0);
1177             if (p == NULL)
1178                 goto out;
1179             ND_TCHECK_2(p);
1180             restype = EXTRACT_BE_U_2(p);
1181             p = smb_fdata(ndo, p, "ResType=[rw]\nResClass=[rw]\nTTL=[rU]\n", p + 8, 0);
1182             if (p == NULL)
1183                 goto out;
1184             ND_TCHECK_2(p);
1185             rdlen = EXTRACT_BE_U_2(p);
1186             ND_PRINT((ndo, "ResourceLength=%u\nResourceData=\n", rdlen));
1187             p += 2;
1188             if (rdlen == 6) {
1189                 p = smb_fdata(ndo, p, "AddrType=[rw]\nAddress=[b.b.b.b]\n", p + rdlen, 0);
1190                 if (p == NULL)
1191                     goto out;
1192             } else {
1193                 if (restype == 0x21) {
1194                     u_int numnames;
1195
1196                     ND_TCHECK_1(p);
1197                     numnames = EXTRACT_U_1(p);
1198                     p = smb_fdata(ndo, p, "NumNames=[B]\n", p + 1, 0);
1199                     if (p == NULL)
1200                         goto out;
1201                     while (numnames--) {
1202                         p = smb_fdata(ndo, p, "Name=[n2]\t#", maxbuf, 0);
1203                         if (p == NULL)
1204                             goto out;
1205                         ND_TCHECK_1(p);
1206                         if (p >= maxbuf)
1207                             goto out;
1208                         if (EXTRACT_U_1(p) & 0x80)
1209                             ND_PRINT((ndo, "<GROUP> "));
1210                         switch (EXTRACT_U_1(p) & 0x60) {
1211                         case 0x00: ND_PRINT((ndo, "B ")); break;
1212                         case 0x20: ND_PRINT((ndo, "P ")); break;
1213                         case 0x40: ND_PRINT((ndo, "M ")); break;
1214                         case 0x60: ND_PRINT((ndo, "_ ")); break;
1215                         }
1216                         if (EXTRACT_U_1(p) & 0x10)
1217                             ND_PRINT((ndo, "<DEREGISTERING> "));
1218                         if (EXTRACT_U_1(p) & 0x08)
1219                             ND_PRINT((ndo, "<CONFLICT> "));
1220                         if (EXTRACT_U_1(p) & 0x04)
1221                             ND_PRINT((ndo, "<ACTIVE> "));
1222                         if (EXTRACT_U_1(p) & 0x02)
1223                             ND_PRINT((ndo, "<PERMANENT> "));
1224                         ND_PRINT((ndo, "\n"));
1225                         p += 2;
1226                     }
1227                 } else {
1228                     if (p >= maxbuf)
1229                         goto out;
1230                     smb_print_data(ndo, p, min(rdlen, length - (p - data)));
1231                     p += rdlen;
1232                 }
1233             }
1234         }
1235     }
1236
1237     if (p < maxbuf)
1238         smb_fdata(ndo, p, "AdditionalData:\n", maxbuf, 0);
1239
1240 out:
1241     ND_PRINT((ndo, "\n"));
1242     return;
1243 trunc:
1244     ND_PRINT((ndo, "%s", tstr));
1245 }
1246
1247 /*
1248  * Print an SMB-over-TCP packet received across tcp on port 445
1249  */
1250 void
1251 smb_tcp_print(netdissect_options *ndo,
1252               const u_char * data, u_int length)
1253 {
1254     u_int caplen;
1255     u_int smb_len;
1256     const u_char *maxbuf;
1257
1258     if (length < 4)
1259         goto trunc;
1260     if (ndo->ndo_snapend < data)
1261         goto trunc;
1262     caplen = ndo->ndo_snapend - data;
1263     if (caplen < 4)
1264         goto trunc;
1265     maxbuf = data + caplen;
1266     smb_len = EXTRACT_BE_U_3(data + 1);
1267     length -= 4;
1268     caplen -= 4;
1269
1270     startbuf = data;
1271     data += 4;
1272
1273     if (smb_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1274         if (smb_len > caplen) {
1275             if (smb_len > length)
1276                 ND_PRINT((ndo, " WARNING: Packet is continued in later TCP segments\n"));
1277             else
1278                 ND_PRINT((ndo, " WARNING: Short packet. Try increasing the snap length by %u\n",
1279                     smb_len - caplen));
1280         } else
1281             ND_PRINT((ndo, " "));
1282         print_smb(ndo, data, maxbuf > data + smb_len ? data + smb_len : maxbuf);
1283     } else
1284         ND_PRINT((ndo, " SMB-over-TCP packet:(raw data or continuation?)\n"));
1285     return;
1286 trunc:
1287     ND_PRINT((ndo, "%s", tstr));
1288 }
1289
1290 /*
1291  * print a NBT packet received across udp on port 138
1292  */
1293 void
1294 nbt_udp138_print(netdissect_options *ndo,
1295                  const u_char *data, u_int length)
1296 {
1297     const u_char *maxbuf = data + length;
1298
1299     if (maxbuf > ndo->ndo_snapend)
1300         maxbuf = ndo->ndo_snapend;
1301     if (maxbuf <= data)
1302         return;
1303     startbuf = data;
1304
1305     if (ndo->ndo_vflag < 2) {
1306         ND_PRINT((ndo, "NBT UDP PACKET(138)"));
1307         return;
1308     }
1309
1310     data = smb_fdata(ndo, data,
1311         "\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#",
1312         maxbuf, 0);
1313
1314     if (data != NULL) {
1315         /* If there isn't enough data for "\377SMB", don't check for it. */
1316         if ((data + 3) >= maxbuf)
1317             goto out;
1318
1319         if (memcmp(data, "\377SMB",4) == 0)
1320             print_smb(ndo, data, maxbuf);
1321     }
1322 out:
1323     ND_PRINT((ndo, "\n"));
1324 }
1325
1326
1327 /*
1328    print netbeui frames
1329 */
1330 static struct nbf_strings {
1331         const char      *name;
1332         const char      *nonverbose;
1333         const char      *verbose;
1334 } nbf_strings[0x20] = {
1335         { "Add Group Name Query", ", [P23]Name to add=[n2]#",
1336           "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1337         { "Add Name Query", ", [P23]Name to add=[n2]#",
1338           "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1339         { "Name In Conflict", NULL, NULL },
1340         { "Status Query", NULL, NULL },
1341         { NULL, NULL, NULL },   /* not used */
1342         { NULL, NULL, NULL },   /* not used */
1343         { NULL, NULL, NULL },   /* not used */
1344         { "Terminate Trace", NULL, NULL },
1345         { "Datagram", NULL,
1346           "[P7]Destination=[n2]\nSource=[n2]\n" },
1347         { "Broadcast Datagram", NULL,
1348           "[P7]Destination=[n2]\nSource=[n2]\n" },
1349         { "Name Query", ", [P7]Name=[n2]#",
1350           "[P1]SessionNumber=[B]\nNameType=[B][P2]\nResponseCorrelator=[w]\nName=[n2]\nName of sender=[n2]\n" },
1351         { NULL, NULL, NULL },   /* not used */
1352         { NULL, NULL, NULL },   /* not used */
1353         { "Add Name Response", ", [P1]GroupName=[w] [P4]Destination=[n2] Source=[n2]#",
1354           "AddNameInProcess=[B]\nGroupName=[w]\nTransmitCorrelator=[w][P2]\nDestination=[n2]\nSource=[n2]\n" },
1355         { "Name Recognized", NULL,
1356           "[P1]Data2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nDestination=[n2]\nSource=[n2]\n" },
1357         { "Status Response", NULL, NULL },
1358         { NULL, NULL, NULL },   /* not used */
1359         { NULL, NULL, NULL },   /* not used */
1360         { NULL, NULL, NULL },   /* not used */
1361         { "Terminate Trace", NULL, NULL },
1362         { "Data Ack", NULL,
1363           "[P3]TransmitCorrelator=[w][P2]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1364         { "Data First/Middle", NULL,
1365           "Flags=[{RECEIVE_CONTINUE|NO_ACK||PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1366         { "Data Only/Last", NULL,
1367           "Flags=[{|NO_ACK|PIGGYBACK_ACK_ALLOWED|PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1368         { "Session Confirm", NULL,
1369           "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1370         { "Session End", NULL,
1371           "[P1]Data2=[w][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1372         { "Session Initialize", NULL,
1373           "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1374         { "No Receive", NULL,
1375           "Flags=[{|SEND_NO_ACK}]\nDataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1376         { "Receive Outstanding", NULL,
1377           "[P1]DataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1378         { "Receive Continue", NULL,
1379           "[P2]TransmitCorrelator=[w]\n[P2]RemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1380         { NULL, NULL, NULL },   /* not used */
1381         { NULL, NULL, NULL },   /* not used */
1382         { "Session Alive", NULL, NULL }
1383 };
1384
1385 void
1386 netbeui_print(netdissect_options *ndo,
1387               u_short control, const u_char *data, u_int length)
1388 {
1389     const u_char *maxbuf = data + length;
1390     u_int len;
1391     u_int command;
1392     const u_char *data2;
1393     int is_truncated = 0;
1394
1395     if (maxbuf > ndo->ndo_snapend)
1396         maxbuf = ndo->ndo_snapend;
1397     ND_TCHECK_1(data + 4);
1398     len = EXTRACT_LE_U_2(data);
1399     command = EXTRACT_U_1(data + 4);
1400     data2 = data + len;
1401     if (data2 >= maxbuf) {
1402         data2 = maxbuf;
1403         is_truncated = 1;
1404     }
1405
1406     startbuf = data;
1407
1408     if (ndo->ndo_vflag < 2) {
1409         ND_PRINT((ndo, "NBF Packet: "));
1410         data = smb_fdata(ndo, data, "[P5]#", maxbuf, 0);
1411     } else {
1412         ND_PRINT((ndo, "\n>>> NBF Packet\nType=0x%X ", control));
1413         data = smb_fdata(ndo, data, "Length=[u] Signature=[w] Command=[B]\n#", maxbuf, 0);
1414     }
1415     if (data == NULL)
1416         goto out;
1417
1418     if (command > 0x1f || nbf_strings[command].name == NULL) {
1419         if (ndo->ndo_vflag < 2)
1420             data = smb_fdata(ndo, data, "Unknown NBF Command#", data2, 0);
1421         else
1422             data = smb_fdata(ndo, data, "Unknown NBF Command\n", data2, 0);
1423     } else {
1424         if (ndo->ndo_vflag < 2) {
1425             ND_PRINT((ndo, "%s", nbf_strings[command].name));
1426             if (nbf_strings[command].nonverbose != NULL)
1427                 data = smb_fdata(ndo, data, nbf_strings[command].nonverbose, data2, 0);
1428         } else {
1429             ND_PRINT((ndo, "%s:\n", nbf_strings[command].name));
1430             if (nbf_strings[command].verbose != NULL)
1431                 data = smb_fdata(ndo, data, nbf_strings[command].verbose, data2, 0);
1432             else
1433                 ND_PRINT((ndo, "\n"));
1434         }
1435     }
1436
1437     if (ndo->ndo_vflag < 2)
1438         return;
1439
1440     if (data == NULL)
1441         goto out;
1442
1443     if (is_truncated) {
1444         /* data2 was past the end of the buffer */
1445         goto out;
1446     }
1447
1448     /* If this isn't a command that would contain an SMB message, quit. */
1449     if (command != 0x08 && command != 0x09 && command != 0x15 &&
1450         command != 0x16)
1451         goto out;
1452
1453     /* If there isn't enough data for "\377SMB", don't look for it. */
1454     if ((data2 + 3) >= maxbuf)
1455         goto out;
1456
1457     if (memcmp(data2, "\377SMB",4) == 0)
1458         print_smb(ndo, data2, maxbuf);
1459     else {
1460         u_int i;
1461         for (i = 0; i < 128; i++) {
1462             if ((data2 + i + 3) >= maxbuf)
1463                 break;
1464             if (memcmp(data2 + i, "\377SMB", 4) == 0) {
1465                 ND_PRINT((ndo, "found SMB packet at %u\n", i));
1466                 print_smb(ndo, data2 + i, maxbuf);
1467                 break;
1468             }
1469         }
1470     }
1471
1472 out:
1473     ND_PRINT((ndo, "\n"));
1474     return;
1475 trunc:
1476     ND_PRINT((ndo, "%s", tstr));
1477 }
1478
1479
1480 /*
1481  * print IPX-Netbios frames
1482  */
1483 void
1484 ipx_netbios_print(netdissect_options *ndo,
1485                   const u_char *data, u_int length)
1486 {
1487     /*
1488      * this is a hack till I work out how to parse the rest of the
1489      * NetBIOS-over-IPX stuff
1490      */
1491     u_int i;
1492     const u_char *maxbuf;
1493
1494     maxbuf = data + length;
1495     /* Don't go past the end of the captured data in the packet. */
1496     if (maxbuf > ndo->ndo_snapend)
1497         maxbuf = ndo->ndo_snapend;
1498     startbuf = data;
1499     for (i = 0; i < 128; i++) {
1500         if ((data + i + 4) > maxbuf)
1501             break;
1502         if (memcmp(data + i, "\377SMB", 4) == 0) {
1503             smb_fdata(ndo, data, "\n>>> IPX transport ", data + i, 0);
1504             print_smb(ndo, data + i, maxbuf);
1505             ND_PRINT((ndo, "\n"));
1506             break;
1507         }
1508     }
1509     if (i == 128)
1510         smb_fdata(ndo, data, "\n>>> Unknown IPX ", maxbuf, 0);
1511 }