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         ND_TCHECK_2(param);
 118         level = EXTRACT_LE_U_2(param);
 119         fmt = "InfoLevel=[u]\n";
 120         smb_fdata(ndo, param, fmt, param + pcnt, unicodestr);
 121     } else {
 122         switch (level) {
 123         case 1:
 124             fmt = "idFileSystem=[W]\nSectorUnit=[U]\nUnit=[U]\nAvail=[U]\nSectorSize=[u]\n";
 125             break;
 126         case 2:
 127             fmt = "CreationTime=[T2]VolNameLength=[lb]\nVolumeLabel=[c]\n";
 128             break;
 129         case 0x105:
 130             fmt = "Capabilities=[W]\nMaxFileLen=[U]\nVolNameLen=[lU]\nVolume=[C]\n";
 131             break;
 132         default:
 133             fmt = "UnknownLevel\n";
 134             break;
 135         }
 136         smb_fdata(ndo, data, fmt, data + dcnt, unicodestr);
 137     }
 138     if (dcnt) {
 139         ND_PRINT("data:\n");
 140         smb_data_print(ndo, data, dcnt);
 141     }
 142     return;
 143 trunc:
 144     nd_print_trunc(ndo);
 145 }
 146
 147 static const struct smbfnsint trans2_fns[] = {
 148     { 0, "TRANSACT2_OPEN", 0,
 149         { "Flags2=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]\nOFun=[w]\nSize=[U]\nRes=([w, w, w, w, w])\nPath=[S]",
 150           NULL,
 151           "Handle=[u]\nAttrib=[A]\nTime=[T2]\nSize=[U]\nAccess=[w]\nType=[w]\nState=[w]\nAction=[w]\nInode=[W]\nOffErr=[u]\n|EALength=[u]\n",
 152           NULL, NULL }},
 153     { 1, "TRANSACT2_FINDFIRST", 0,
 154         { NULL, NULL, NULL, NULL, trans2_findfirst }},
 155     { 2, "TRANSACT2_FINDNEXT", 0, DEFDESCRIPT },
 156     { 3, "TRANSACT2_QFSINFO", 0,
 157         { NULL, NULL, NULL, NULL, trans2_qfsinfo }},
 158     { 4, "TRANSACT2_SETFSINFO", 0, DEFDESCRIPT },
 159     { 5, "TRANSACT2_QPATHINFO", 0, DEFDESCRIPT },
 160     { 6, "TRANSACT2_SETPATHINFO", 0, DEFDESCRIPT },
 161     { 7, "TRANSACT2_QFILEINFO", 0, DEFDESCRIPT },
 162     { 8, "TRANSACT2_SETFILEINFO", 0, DEFDESCRIPT },
 163     { 9, "TRANSACT2_FSCTL", 0, DEFDESCRIPT },
 164     { 10, "TRANSACT2_IOCTL", 0, DEFDESCRIPT },
 165     { 11, "TRANSACT2_FINDNOTIFYFIRST", 0, DEFDESCRIPT },
 166     { 12, "TRANSACT2_FINDNOTIFYNEXT", 0, DEFDESCRIPT },
 167     { 13, "TRANSACT2_MKDIR", 0, DEFDESCRIPT },
 168     { -1, NULL, 0, DEFDESCRIPT }
 169 };
 170
 171
 172 static void
 173 print_trans2(netdissect_options *ndo,
 174              const u_char *words, const u_char *dat, const u_char *buf, const u_char *maxbuf)
 175 {
 176     u_int bcc;
 177     static const struct smbfnsint *fn = &trans2_fns[0];
 178     const u_char *data, *param;
 179     const u_char *w = words + 1;
 180     const char *f1 = NULL, *f2 = NULL;
 181     u_int pcnt, dcnt;
 182
 183     ND_TCHECK_1(words);
 184     if (request) {
 185         ND_TCHECK_2(w + (14 * 2));
 186         pcnt = EXTRACT_LE_U_2(w + 9 * 2);
 187         param = buf + EXTRACT_LE_U_2(w + 10 * 2);
 188         dcnt = EXTRACT_LE_U_2(w + 11 * 2);
 189         data = buf + EXTRACT_LE_U_2(w + 12 * 2);
 190         fn = smbfindint(EXTRACT_LE_U_2(w + 14 * 2), trans2_fns);
 191     } else {
 192         if (EXTRACT_U_1(words) == 0) {
 193             ND_PRINT("%s\n", fn->name);
 194             ND_PRINT("Trans2Interim\n");
 195             return;
 196         }
 197         ND_TCHECK_2(w + (7 * 2));
 198         pcnt = EXTRACT_LE_U_2(w + 3 * 2);
 199         param = buf + EXTRACT_LE_U_2(w + 4 * 2);
 200         dcnt = EXTRACT_LE_U_2(w + 6 * 2);
 201         data = buf + EXTRACT_LE_U_2(w + 7 * 2);
 202     }
 203
 204     ND_PRINT("%s param_length=%u data_length=%u\n", fn->name, pcnt, dcnt);
 205
 206     if (request) {
 207         if (EXTRACT_U_1(words) == 8) {
 208             smb_fdata(ndo, words + 1,
 209                 "Trans2Secondary\nTotParam=[u]\nTotData=[u]\nParamCnt=[u]\nParamOff=[u]\nParamDisp=[u]\nDataCnt=[u]\nDataOff=[u]\nDataDisp=[u]\nHandle=[u]\n",
 210                 maxbuf, unicodestr);
 211             return;
 212         } else {
 213             smb_fdata(ndo, words + 1,
 214                 "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",
 215                 words + 1 + 14 * 2, unicodestr);
 216         }
 217         f1 = fn->descript.req_f1;
 218         f2 = fn->descript.req_f2;
 219     } else {
 220         smb_fdata(ndo, words + 1,
 221             "TotParam=[u]\nTotData=[u]\nRes1=[w]\nParamCnt=[u]\nParamOff=[u]\nParamDisp[u]\nDataCnt=[u]\nDataOff=[u]\nDataDisp=[u]\nSetupCnt=[b][P1]\n",
 222             words + 1 + 10 * 2, unicodestr);
 223         f1 = fn->descript.rep_f1;
 224         f2 = fn->descript.rep_f2;
 225     }
 226
 227     ND_TCHECK_2(dat);
 228     bcc = EXTRACT_LE_U_2(dat);
 229     ND_PRINT("smb_bcc=%u\n", bcc);
 230     if (fn->descript.fn)
 231         (*fn->descript.fn)(ndo, param, data, pcnt, dcnt);
 232     else {
 233         smb_fdata(ndo, param, f1 ? f1 : "Parameters=\n", param + pcnt, unicodestr);
 234         smb_fdata(ndo, data, f2 ? f2 : "Data=\n", data + dcnt, unicodestr);
 235     }
 236     return;
 237 trunc:
 238     nd_print_trunc(ndo);
 239 }
 240
 241 static void
 242 print_browse(netdissect_options *ndo,
 243              const u_char *param, u_int paramlen, const u_char *data, u_int datalen)
 244 {
 245     const u_char *maxbuf = data + datalen;
 246     u_int command;
 247
 248     ND_TCHECK_1(data);
 249     command = EXTRACT_U_1(data);
 250
 251     smb_fdata(ndo, param, "BROWSE PACKET\n|Param ", param+paramlen, unicodestr);
 252
 253     switch (command) {
 254     case 0xF:
 255         data = smb_fdata(ndo, data,
 256             "BROWSE PACKET:\nType=[B] (LocalMasterAnnouncement)\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 0x1:
 261         data = smb_fdata(ndo, data,
 262             "BROWSE PACKET:\nType=[B] (HostAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[u]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nElectionVersion=[w]\nBrowserConstant=[w]\n",
 263             maxbuf, unicodestr);
 264         break;
 265
 266     case 0x2:
 267         data = smb_fdata(ndo, data,
 268             "BROWSE PACKET:\nType=[B] (AnnouncementRequest)\nFlags=[B]\nReplySystemName=[S]\n",
 269             maxbuf, unicodestr);
 270         break;
 271
 272     case 0xc:
 273         data = smb_fdata(ndo, data,
 274             "BROWSE PACKET:\nType=[B] (WorkgroupAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[u]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nCommentPointer=[W]\nServerName=[S]\n",
 275             maxbuf, unicodestr);
 276         break;
 277
 278     case 0x8:
 279         data = smb_fdata(ndo, data,
 280             "BROWSE PACKET:\nType=[B] (ElectionFrame)\nElectionVersion=[B]\nOSSummary=[W]\nUptime=[(W, W)]\nServerName=[S]\n",
 281             maxbuf, unicodestr);
 282         break;
 283
 284     case 0xb:
 285         data = smb_fdata(ndo, data,
 286             "BROWSE PACKET:\nType=[B] (BecomeBackupBrowser)\nName=[S]\n",
 287             maxbuf, unicodestr);
 288         break;
 289
 290     case 0x9:
 291         data = smb_fdata(ndo, data,
 292             "BROWSE PACKET:\nType=[B] (GetBackupList)\nListCount?=[B]\nToken=[W]\n",
 293             maxbuf, unicodestr);
 294         break;
 295
 296     case 0xa:
 297         data = smb_fdata(ndo, data,
 298             "BROWSE PACKET:\nType=[B] (BackupListResponse)\nServerCount?=[B]\nToken=[W]\n*Name=[S]\n",
 299             maxbuf, unicodestr);
 300         break;
 301
 302     case 0xd:
 303         data = smb_fdata(ndo, data,
 304             "BROWSE PACKET:\nType=[B] (MasterAnnouncement)\nMasterName=[S]\n",
 305             maxbuf, unicodestr);
 306         break;
 307
 308     case 0xe:
 309         data = smb_fdata(ndo, data,
 310             "BROWSE PACKET:\nType=[B] (ResetBrowser)\nOptions=[B]\n", maxbuf, unicodestr);
 311         break;
 312
 313     default:
 314         data = smb_fdata(ndo, data, "Unknown Browser Frame ", maxbuf, unicodestr);
 315         break;
 316     }
 317     return;
 318 trunc:
 319     nd_print_trunc(ndo);
 320 }
 321
 322
 323 static void
 324 print_ipc(netdissect_options *ndo,
 325           const u_char *param, u_int paramlen, const u_char *data, u_int datalen)
 326 {
 327     if (paramlen)
 328         smb_fdata(ndo, param, "Command=[w]\nStr1=[S]\nStr2=[S]\n", param + paramlen,
 329             unicodestr);
 330     if (datalen)
 331         smb_fdata(ndo, data, "IPC ", data + datalen, unicodestr);
 332 }
 333
 334
 335 static void
 336 print_trans(netdissect_options *ndo,
 337             const u_char *words, const u_char *data1, const u_char *buf, const u_char *maxbuf)
 338 {
 339     u_int bcc;
 340     const char *f1, *f2, *f3, *f4;
 341     const u_char *data, *param;
 342     const u_char *w = words + 1;
 343     u_int datalen, paramlen;
 344
 345     if (request) {
 346         ND_TCHECK_2(w + (12 * 2));
 347         paramlen = EXTRACT_LE_U_2(w + 9 * 2);
 348         param = buf + EXTRACT_LE_U_2(w + 10 * 2);
 349         datalen = EXTRACT_LE_U_2(w + 11 * 2);
 350         data = buf + EXTRACT_LE_U_2(w + 12 * 2);
 351         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";
 352         f2 = "|Name=[S]\n";
 353         f3 = "|Param ";
 354         f4 = "|Data ";
 355     } else {
 356         ND_TCHECK_2(w + (7 * 2));
 357         paramlen = EXTRACT_LE_U_2(w + 3 * 2);
 358         param = buf + EXTRACT_LE_U_2(w + 4 * 2);
 359         datalen = EXTRACT_LE_U_2(w + 6 * 2);
 360         data = buf + EXTRACT_LE_U_2(w + 7 * 2);
 361         f1 = "TotParamCnt=[u]\nTotDataCnt=[u]\nRes1=[u]\nParamCnt=[u]\nParamOff=[u]\nRes2=[u]\nDataCnt=[u]\nDataOff=[u]\nRes3=[u]\nLsetup=[u]\n";
 362         f2 = "|Unknown ";
 363         f3 = "|Param ";
 364         f4 = "|Data ";
 365     }
 366
 367     smb_fdata(ndo, words + 1, f1,
 368               min(words + 1 + 2 * EXTRACT_U_1(words), maxbuf),
 369               unicodestr);
 370
 371     ND_TCHECK_2(data1);
 372     bcc = EXTRACT_LE_U_2(data1);
 373     ND_PRINT("smb_bcc=%u\n", bcc);
 374     if (bcc > 0) {
 375         smb_fdata(ndo, data1 + 2, f2, maxbuf - (paramlen + datalen), unicodestr);
 376
 377         if (strcmp((const char *)(data1 + 2), "\\MAILSLOT\\BROWSE") == 0) {
 378             print_browse(ndo, param, paramlen, data, datalen);
 379             return;
 380         }
 381
 382         if (strcmp((const char *)(data1 + 2), "\\PIPE\\LANMAN") == 0) {
 383             print_ipc(ndo, param, paramlen, data, datalen);
 384             return;
 385         }
 386
 387         if (paramlen)
 388             smb_fdata(ndo, param, f3, min(param + paramlen, maxbuf), unicodestr);
 389         if (datalen)
 390             smb_fdata(ndo, data, f4, min(data + datalen, maxbuf), unicodestr);
 391     }
 392     return;
 393 trunc:
 394     nd_print_trunc(ndo);
 395 }
 396
 397
 398 static void
 399 print_negprot(netdissect_options *ndo,
 400               const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 401 {
 402     u_int wct, bcc;
 403     const char *f1 = NULL, *f2 = NULL;
 404
 405     ND_TCHECK_1(words);
 406     wct = EXTRACT_U_1(words);
 407     if (request)
 408         f2 = "*|Dialect=[Y]\n";
 409     else {
 410         if (wct == 1)
 411             f1 = "Core Protocol\nDialectIndex=[u]";
 412         else if (wct == 17)
 413             f1 = "NT1 Protocol\nDialectIndex=[u]\nSecMode=[B]\nMaxMux=[u]\nNumVcs=[u]\nMaxBuffer=[U]\nRawSize=[U]\nSessionKey=[W]\nCapabilities=[W]\nServerTime=[T3]TimeZone=[u]\nCryptKey=";
 414         else if (wct == 13)
 415             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=";
 416     }
 417
 418     if (f1)
 419         smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
 420             unicodestr);
 421     else
 422         smb_data_print(ndo, words + 1, min(wct * 2, PTR_DIFF(maxbuf, words + 1)));
 423
 424     ND_TCHECK_2(data);
 425     bcc = EXTRACT_LE_U_2(data);
 426     ND_PRINT("smb_bcc=%u\n", bcc);
 427     if (bcc > 0) {
 428         if (f2)
 429             smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_U_2(data),
 430                                              maxbuf), unicodestr);
 431         else
 432             smb_data_print(ndo, data + 2,
 433                            min(EXTRACT_LE_U_2(data), PTR_DIFF(maxbuf, data + 2)));
 434     }
 435     return;
 436 trunc:
 437     nd_print_trunc(ndo);
 438 }
 439
 440 static void
 441 print_sesssetup(netdissect_options *ndo,
 442                 const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 443 {
 444     u_int wct, bcc;
 445     const char *f1 = NULL, *f2 = NULL;
 446
 447     ND_TCHECK_1(words);
 448     wct = EXTRACT_U_1(words);
 449     if (request) {
 450         if (wct == 10)
 451             f1 = "Com2=[w]\nOff2=[u]\nBufSize=[u]\nMpxMax=[u]\nVcNum=[u]\nSessionKey=[W]\nPassLen=[u]\nCryptLen=[u]\nCryptOff=[u]\nPass&Name=\n";
 452         else
 453             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";
 454     } else {
 455         if (wct == 3) {
 456             f1 = "Com2=[w]\nOff2=[u]\nAction=[w]\n";
 457         } else if (wct == 13) {
 458             f1 = "Com2=[B]\nRes=[B]\nOff2=[u]\nAction=[w]\n";
 459             f2 = "NativeOS=[S]\nNativeLanMan=[S]\nPrimaryDomain=[S]\n";
 460         }
 461     }
 462
 463     if (f1)
 464         smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
 465             unicodestr);
 466     else
 467         smb_data_print(ndo, words + 1, min(wct * 2, PTR_DIFF(maxbuf, words + 1)));
 468
 469     ND_TCHECK_2(data);
 470     bcc = EXTRACT_LE_U_2(data);
 471     ND_PRINT("smb_bcc=%u\n", bcc);
 472     if (bcc > 0) {
 473         if (f2)
 474             smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_U_2(data),
 475                                              maxbuf), unicodestr);
 476         else
 477             smb_data_print(ndo, data + 2,
 478                            min(EXTRACT_LE_U_2(data), PTR_DIFF(maxbuf, data + 2)));
 479     }
 480     return;
 481 trunc:
 482     nd_print_trunc(ndo);
 483 }
 484
 485 static void
 486 print_lockingandx(netdissect_options *ndo,
 487                   const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 488 {
 489     u_int wct, bcc;
 490     const u_char *maxwords;
 491     const char *f1 = NULL, *f2 = NULL;
 492
 493     ND_TCHECK_1(words);
 494     wct = EXTRACT_U_1(words);
 495     if (request) {
 496         f1 = "Com2=[w]\nOff2=[u]\nHandle=[u]\nLockType=[w]\nTimeOut=[D]\nUnlockCount=[u]\nLockCount=[u]\n";
 497         ND_TCHECK_1(words + 7);
 498         if (EXTRACT_U_1(words + 7) & 0x10)
 499             f2 = "*Process=[u]\n[P2]Offset=[M]\nLength=[M]\n";
 500         else
 501             f2 = "*Process=[u]\nOffset=[D]\nLength=[U]\n";
 502     } else {
 503         f1 = "Com2=[w]\nOff2=[u]\n";
 504     }
 505
 506     maxwords = min(words + 1 + wct * 2, maxbuf);
 507     if (wct)
 508         smb_fdata(ndo, words + 1, f1, maxwords, unicodestr);
 509
 510     ND_TCHECK_2(data);
 511     bcc = EXTRACT_LE_U_2(data);
 512     ND_PRINT("smb_bcc=%u\n", bcc);
 513     if (bcc > 0) {
 514         if (f2)
 515             smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_U_2(data),
 516                                              maxbuf), unicodestr);
 517         else
 518             smb_data_print(ndo, data + 2,
 519                            min(EXTRACT_LE_U_2(data), PTR_DIFF(maxbuf, data + 2)));
 520     }
 521     return;
 522 trunc:
 523     nd_print_trunc(ndo);
 524 }
 525
 526
 527 static const struct smbfns smb_fns[] = {
 528     { -1, "SMBunknown", 0, DEFDESCRIPT },
 529
 530     { SMBtcon, "SMBtcon", 0,
 531         { NULL, "Path=[Z]\nPassword=[Z]\nDevice=[Z]\n",
 532           "MaxXmit=[u]\nTreeId=[u]\n", NULL,
 533           NULL } },
 534
 535     { SMBtdis, "SMBtdis", 0, DEFDESCRIPT },
 536     { SMBexit,  "SMBexit", 0, DEFDESCRIPT },
 537     { SMBioctl, "SMBioctl", 0, DEFDESCRIPT },
 538
 539     { SMBecho, "SMBecho", 0,
 540         { "ReverbCount=[u]\n", NULL,
 541           "SequenceNum=[u]\n", NULL,
 542           NULL } },
 543
 544     { SMBulogoffX, "SMBulogoffX", FLG_CHAIN, DEFDESCRIPT },
 545
 546     { SMBgetatr, "SMBgetatr", 0,
 547         { NULL, "Path=[Z]\n",
 548           "Attribute=[A]\nTime=[T2]Size=[U]\nRes=([w,w,w,w,w])\n", NULL,
 549           NULL } },
 550
 551     { SMBsetatr, "SMBsetatr", 0,
 552         { "Attribute=[A]\nTime=[T2]Res=([w,w,w,w,w])\n", "Path=[Z]\n",
 553           NULL, NULL, NULL } },
 554
 555     { SMBchkpth, "SMBchkpth", 0,
 556        { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 557
 558     { SMBsearch, "SMBsearch", 0,
 559         { "Count=[u]\nAttrib=[A]\n",
 560           "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\nRes2=[W]\n",
 561           "Count=[u]\n",
 562           "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",
 563           NULL } },
 564
 565     { SMBopen, "SMBopen", 0,
 566         { "Mode=[w]\nAttribute=[A]\n", "Path=[Z]\n",
 567           "Handle=[u]\nOAttrib=[A]\nTime=[T2]Size=[U]\nAccess=[w]\n",
 568           NULL, NULL } },
 569
 570     { SMBcreate, "SMBcreate", 0,
 571         { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[u]\n", NULL, NULL } },
 572
 573     { SMBmknew, "SMBmknew", 0,
 574         { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[u]\n", NULL, NULL } },
 575
 576     { SMBunlink, "SMBunlink", 0,
 577         { "Attrib=[A]\n", "Path=[Z]\n", NULL, NULL, NULL } },
 578
 579     { SMBread, "SMBread", 0,
 580         { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
 581           "Count=[u]\nRes=([w,w,w,w])\n", NULL, NULL } },
 582
 583     { SMBwrite, "SMBwrite", 0,
 584         { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
 585           "Count=[u]\n", NULL, NULL } },
 586
 587     { SMBclose, "SMBclose", 0,
 588         { "Handle=[u]\nTime=[T2]", NULL, NULL, NULL, NULL } },
 589
 590     { SMBmkdir, "SMBmkdir", 0,
 591         { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 592
 593     { SMBrmdir, "SMBrmdir", 0,
 594         { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 595
 596     { SMBdskattr, "SMBdskattr", 0,
 597         { NULL, NULL,
 598           "TotalUnits=[u]\nBlocksPerUnit=[u]\nBlockSize=[u]\nFreeUnits=[u]\nMedia=[w]\n",
 599           NULL, NULL } },
 600
 601     { SMBmv, "SMBmv", 0,
 602         { "Attrib=[A]\n", "OldPath=[Z]\nNewPath=[Z]\n", NULL, NULL, NULL } },
 603
 604     /*
 605      * this is a Pathworks specific call, allowing the
 606      * changing of the root path
 607      */
 608     { pSETDIR, "SMBsetdir", 0, { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 609
 610     { SMBlseek, "SMBlseek", 0,
 611         { "Handle=[u]\nMode=[w]\nOffset=[D]\n", "Offset=[D]\n", NULL, NULL, NULL } },
 612
 613     { SMBflush, "SMBflush", 0, { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 614
 615     { SMBsplopen, "SMBsplopen", 0,
 616         { "SetupLen=[u]\nMode=[w]\n", "Ident=[Z]\n", "Handle=[u]\n",
 617           NULL, NULL } },
 618
 619     { SMBsplclose, "SMBsplclose", 0,
 620         { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 621
 622     { SMBsplretq, "SMBsplretq", 0,
 623         { "MaxCount=[u]\nStartIndex=[u]\n", NULL,
 624           "Count=[u]\nIndex=[u]\n",
 625           "*Time=[T2]Status=[B]\nJobID=[u]\nSize=[U]\nRes=[B]Name=[s16]\n",
 626           NULL } },
 627
 628     { SMBsplwr, "SMBsplwr", 0,
 629         { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 630
 631     { SMBlock, "SMBlock", 0,
 632         { "Handle=[u]\nCount=[U]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
 633
 634     { SMBunlock, "SMBunlock", 0,
 635         { "Handle=[u]\nCount=[U]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
 636
 637     /* CORE+ PROTOCOL FOLLOWS */
 638
 639     { SMBreadbraw, "SMBreadbraw", 0,
 640         { "Handle=[u]\nOffset=[D]\nMaxCount=[u]\nMinCount=[u]\nTimeOut=[D]\nRes=[u]\n",
 641           NULL, NULL, NULL, NULL } },
 642
 643     { SMBwritebraw, "SMBwritebraw", 0,
 644         { "Handle=[u]\nTotalCount=[u]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\n|DataSize=[u]\nDataOff=[u]\n",
 645           NULL, "WriteRawAck", NULL, NULL } },
 646
 647     { SMBwritec, "SMBwritec", 0,
 648         { NULL, NULL, "Count=[u]\n", NULL, NULL } },
 649
 650     { SMBwriteclose, "SMBwriteclose", 0,
 651         { "Handle=[u]\nCount=[u]\nOffset=[D]\nTime=[T2]Res=([w,w,w,w,w,w])",
 652           NULL, "Count=[u]\n", NULL, NULL } },
 653
 654     { SMBlockread, "SMBlockread", 0,
 655         { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
 656           "Count=[u]\nRes=([w,w,w,w])\n", NULL, NULL } },
 657
 658     { SMBwriteunlock, "SMBwriteunlock", 0,
 659         { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
 660           "Count=[u]\n", NULL, NULL } },
 661
 662     { SMBreadBmpx, "SMBreadBmpx", 0,
 663         { "Handle=[u]\nOffset=[D]\nMaxCount=[u]\nMinCount=[u]\nTimeOut=[D]\nRes=[w]\n",
 664           NULL,
 665           "Offset=[D]\nTotCount=[u]\nRemaining=[u]\nRes=([w,w])\nDataSize=[u]\nDataOff=[u]\n",
 666           NULL, NULL } },
 667
 668     { SMBwriteBmpx, "SMBwriteBmpx", 0,
 669         { "Handle=[u]\nTotCount=[u]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\nDataSize=[u]\nDataOff=[u]\n", NULL,
 670           "Remaining=[u]\n", NULL, NULL } },
 671
 672     { SMBwriteBs, "SMBwriteBs", 0,
 673         { "Handle=[u]\nTotCount=[u]\nOffset=[D]\nRes=[W]\nDataSize=[u]\nDataOff=[u]\n",
 674           NULL, "Count=[u]\n", NULL, NULL } },
 675
 676     { SMBsetattrE, "SMBsetattrE", 0,
 677         { "Handle=[u]\nCreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]", NULL,
 678           NULL, NULL, NULL } },
 679
 680     { SMBgetattrE, "SMBgetattrE", 0,
 681         { "Handle=[u]\n", NULL,
 682           "CreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]Size=[U]\nAllocSize=[U]\nAttribute=[A]\n",
 683           NULL, NULL } },
 684
 685     { SMBtranss, "SMBtranss", 0, DEFDESCRIPT },
 686     { SMBioctls, "SMBioctls", 0, DEFDESCRIPT },
 687
 688     { SMBcopy, "SMBcopy", 0,
 689         { "TreeID2=[u]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
 690           "CopyCount=[u]\n",  "|ErrStr=[S]\n",  NULL } },
 691
 692     { SMBmove, "SMBmove", 0,
 693         { "TreeID2=[u]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
 694           "MoveCount=[u]\n",  "|ErrStr=[S]\n",  NULL } },
 695
 696     { SMBopenX, "SMBopenX", FLG_CHAIN,
 697         { "Com2=[w]\nOff2=[u]\nFlags=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]OFun=[w]\nSize=[U]\nTimeOut=[D]\nRes=[W]\n",
 698           "Path=[S]\n",
 699           "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",
 700           NULL, NULL } },
 701
 702     { SMBreadX, "SMBreadX", FLG_CHAIN,
 703         { "Com2=[w]\nOff2=[u]\nHandle=[u]\nOffset=[D]\nMaxCount=[u]\nMinCount=[u]\nTimeOut=[D]\nCountLeft=[u]\n",
 704           NULL,
 705           "Com2=[w]\nOff2=[u]\nRemaining=[u]\nRes=[W]\nDataSize=[u]\nDataOff=[u]\nRes=([w,w,w,w])\n",
 706           NULL, NULL } },
 707
 708     { SMBwriteX, "SMBwriteX", FLG_CHAIN,
 709         { "Com2=[w]\nOff2=[u]\nHandle=[u]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nCountLeft=[u]\nRes=[w]\nDataSize=[u]\nDataOff=[u]\n",
 710           NULL,
 711           "Com2=[w]\nOff2=[u]\nCount=[u]\nRemaining=[u]\nRes=[W]\n",
 712           NULL, NULL } },
 713
 714     { SMBffirst, "SMBffirst", 0,
 715         { "Count=[u]\nAttrib=[A]\n",
 716           "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\n",
 717           "Count=[u]\n",
 718           "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",
 719           NULL } },
 720
 721     { SMBfunique, "SMBfunique", 0,
 722         { "Count=[u]\nAttrib=[A]\n",
 723           "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\n",
 724           "Count=[u]\n",
 725           "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",
 726           NULL } },
 727
 728     { SMBfclose, "SMBfclose", 0,
 729         { "Count=[u]\nAttrib=[A]\n",
 730           "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\n",
 731           "Count=[u]\n",
 732           "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",
 733           NULL } },
 734
 735     { SMBfindnclose, "SMBfindnclose", 0,
 736         { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 737
 738     { SMBfindclose, "SMBfindclose", 0,
 739         { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 740
 741     { SMBsends, "SMBsends", 0,
 742         { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
 743
 744     { SMBsendstrt, "SMBsendstrt", 0,
 745         { NULL, "Source=[Z]\nDest=[Z]\n", "GroupID=[u]\n", NULL, NULL } },
 746
 747     { SMBsendend, "SMBsendend", 0,
 748         { "GroupID=[u]\n", NULL, NULL, NULL, NULL } },
 749
 750     { SMBsendtxt, "SMBsendtxt", 0,
 751         { "GroupID=[u]\n", NULL, NULL, NULL, NULL } },
 752
 753     { SMBsendb, "SMBsendb", 0,
 754         { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
 755
 756     { SMBfwdname, "SMBfwdname", 0, DEFDESCRIPT },
 757     { SMBcancelf, "SMBcancelf", 0, DEFDESCRIPT },
 758     { SMBgetmac, "SMBgetmac", 0, DEFDESCRIPT },
 759
 760     { SMBnegprot, "SMBnegprot", 0,
 761         { NULL, NULL, NULL, NULL, print_negprot } },
 762
 763     { SMBsesssetupX, "SMBsesssetupX", FLG_CHAIN,
 764         { NULL, NULL, NULL, NULL, print_sesssetup } },
 765
 766     { SMBtconX, "SMBtconX", FLG_CHAIN,
 767         { "Com2=[w]\nOff2=[u]\nFlags=[w]\nPassLen=[u]\nPasswd&Path&Device=\n",
 768           NULL, "Com2=[w]\nOff2=[u]\n", "ServiceType=[R]\n", NULL } },
 769
 770     { SMBlockingX, "SMBlockingX", FLG_CHAIN,
 771         { NULL, NULL, NULL, NULL, print_lockingandx } },
 772
 773     { SMBtrans2, "SMBtrans2", 0, { NULL, NULL, NULL, NULL, print_trans2 } },
 774
 775     { SMBtranss2, "SMBtranss2", 0, DEFDESCRIPT },
 776     { SMBctemp, "SMBctemp", 0, DEFDESCRIPT },
 777     { SMBreadBs, "SMBreadBs", 0, DEFDESCRIPT },
 778     { SMBtrans, "SMBtrans", 0, { NULL, NULL, NULL, NULL, print_trans } },
 779
 780     { SMBnttrans, "SMBnttrans", 0, DEFDESCRIPT },
 781     { SMBnttranss, "SMBnttranss", 0, DEFDESCRIPT },
 782
 783     { SMBntcreateX, "SMBntcreateX", FLG_CHAIN,
 784         { "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",
 785           "Path=[C]\n",
 786           "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",
 787           NULL, NULL } },
 788
 789     { SMBntcancel, "SMBntcancel", 0, DEFDESCRIPT },
 790
 791     { -1, NULL, 0, DEFDESCRIPT }
 792 };
 793
 794
 795 /*
 796  * print a SMB message
 797  */
 798 static void
 799 print_smb(netdissect_options *ndo,
 800           const u_char *buf, const u_char *maxbuf)
 801 {
 802     uint16_t flags2;
 803     u_int nterrcodes;
 804     u_int command;
 805     uint32_t nterror;
 806     const u_char *words, *maxwords, *data;
 807     const struct smbfns *fn;
 808     const char *fmt_smbheader =
 809         "[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";
 810     u_int smboffset;
 811
 812     ND_TCHECK_1(buf + 9);
 813     request = (EXTRACT_U_1(buf + 9) & 0x80) ? 0 : 1;
 814     startbuf = buf;
 815
 816     command = EXTRACT_U_1(buf + 4);
 817
 818     fn = smbfind(command, smb_fns);
 819
 820     if (ndo->ndo_vflag > 1)
 821         ND_PRINT("\n");
 822
 823     ND_PRINT("SMB PACKET: %s (%s)\n", fn->name, request ? "REQUEST" : "REPLY");
 824
 825     if (ndo->ndo_vflag < 2)
 826         return;
 827
 828     ND_TCHECK_2(buf + 10);
 829     flags2 = EXTRACT_LE_U_2(buf + 10);
 830     unicodestr = flags2 & 0x8000;
 831     nterrcodes = flags2 & 0x4000;
 832
 833     /* print out the header */
 834     smb_fdata(ndo, buf, fmt_smbheader, buf + 33, unicodestr);
 835
 836     if (nterrcodes) {
 837         nterror = EXTRACT_LE_U_4(buf + 5);
 838         if (nterror)
 839             ND_PRINT("NTError = %s\n", nt_errstr(nterror));
 840     } else {
 841         if (EXTRACT_U_1(buf + 5))
 842             ND_PRINT("SMBError = %s\n", smb_errstr(EXTRACT_U_1(buf + 5),
 843                       EXTRACT_LE_U_2(buf + 7)));
 844     }
 845
 846     smboffset = 32;
 847
 848     for (;;) {
 849         const char *f1, *f2;
 850         int wct;
 851         u_int bcc;
 852         u_int newsmboffset;
 853
 854         words = buf + smboffset;
 855         ND_TCHECK_1(words);
 856         wct = EXTRACT_U_1(words);
 857         data = words + 1 + wct * 2;
 858         maxwords = min(data, maxbuf);
 859
 860         if (request) {
 861             f1 = fn->descript.req_f1;
 862             f2 = fn->descript.req_f2;
 863         } else {
 864             f1 = fn->descript.rep_f1;
 865             f2 = fn->descript.rep_f2;
 866         }
 867
 868         if (fn->descript.fn)
 869             (*fn->descript.fn)(ndo, words, data, buf, maxbuf);
 870         else {
 871             if (wct) {
 872                 if (f1)
 873                     smb_fdata(ndo, words + 1, f1, words + 1 + wct * 2, unicodestr);
 874                 else {
 875                     u_int i;
 876                     u_int v;
 877
 878                     for (i = 0; words + 1 + 2 * i < maxwords; i++) {
 879                         ND_TCHECK_2(words + 1 + 2 * i);
 880                         v = EXTRACT_LE_U_2(words + 1 + 2 * i);
 881                         ND_PRINT("smb_vwv[%u]=%u (0x%X)\n", i, v, v);
 882                     }
 883                 }
 884             }
 885
 886             ND_TCHECK_2(data);
 887             bcc = EXTRACT_LE_U_2(data);
 888             ND_PRINT("smb_bcc=%u\n", bcc);
 889             if (f2) {
 890                 if (bcc > 0)
 891                     smb_fdata(ndo, data + 2, f2, data + 2 + bcc, unicodestr);
 892             } else {
 893                 if (bcc > 0) {
 894                     ND_PRINT("smb_buf[]=\n");
 895                     smb_data_print(ndo, data + 2, min(bcc, PTR_DIFF(maxbuf, data + 2)));
 896                 }
 897             }
 898         }
 899
 900         if ((fn->flags & FLG_CHAIN) == 0)
 901             break;
 902         if (wct == 0)
 903             break;
 904         ND_TCHECK_1(words + 1);
 905         command = EXTRACT_U_1(words + 1);
 906         if (command == 0xFF)
 907             break;
 908         ND_TCHECK_2(words + 3);
 909         newsmboffset = EXTRACT_LE_U_2(words + 3);
 910
 911         fn = smbfind(command, smb_fns);
 912
 913         ND_PRINT("\nSMB PACKET: %s (%s) (CHAINED)\n",
 914             fn->name, request ? "REQUEST" : "REPLY");
 915         if (newsmboffset <= smboffset) {
 916             ND_PRINT("Bad andX offset: %u <= %u\n", newsmboffset, smboffset);
 917             break;
 918         }
 919         smboffset = newsmboffset;
 920     }
 921
 922     ND_PRINT("\n");
 923     return;
 924 trunc:
 925     nd_print_trunc(ndo);
 926 }
 927
 928
 929 /*
 930  * print a NBT packet received across tcp on port 139
 931  */
 932 void
 933 nbt_tcp_print(netdissect_options *ndo,
 934               const u_char *data, u_int length)
 935 {
 936     u_int caplen;
 937     u_int type;
 938     u_int nbt_len;
 939     const u_char *maxbuf;
 940
 941     ndo->ndo_protocol = "nbt_tcp";
 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(" NBT Session Packet: ");
 961         switch (type) {
 962         case 0x00:
 963             ND_PRINT("Session Message");
 964             break;
 965
 966         case 0x81:
 967             ND_PRINT("Session Request");
 968             break;
 969
 970         case 0x82:
 971             ND_PRINT("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("Session Reject, ");
 987             switch (ecode) {
 988             case 0x80:
 989                 ND_PRINT("Not listening on called name");
 990                 break;
 991             case 0x81:
 992                 ND_PRINT("Not listening for calling name");
 993                 break;
 994             case 0x82:
 995                 ND_PRINT("Called name not present");
 996                 break;
 997             case 0x83:
 998                 ND_PRINT("Called name present, but insufficient resources");
 999                 break;
1000             default:
1001                 ND_PRINT("Unspecified error 0x%X", ecode);
1002                 break;
1003             }
1004           }
1005             break;
1006
1007         case 0x85:
1008             ND_PRINT("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("\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("WARNING: Packet is continued in later TCP segments\n");
1027                     else
1028                         ND_PRINT("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("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("Not listening on called name\n");
1061                     break;
1062                 case 0x81:
1063                     ND_PRINT("Not listening for calling name\n");
1064                     break;
1065                 case 0x82:
1066                     ND_PRINT("Called name not present\n");
1067                     break;
1068                 case 0x83:
1069                     ND_PRINT("Called name present, but insufficient resources\n");
1070                     break;
1071                 default:
1072                     ND_PRINT("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("\n");
1088     }
1089     return;
1090 trunc:
1091     nd_print_trunc(ndo);
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     ndo->ndo_protocol = "nbt_udp137";
1119     ND_TCHECK_2(data + 10);
1120     name_trn_id = EXTRACT_BE_U_2(data);
1121     response = (EXTRACT_U_1(data + 2) >> 7);
1122     opcode = (EXTRACT_U_1(data + 2) >> 3) & 0xF;
1123     nm_flags = ((EXTRACT_U_1(data + 2) & 0x7) << 4) + (EXTRACT_U_1(data + 3) >> 4);
1124     rcode = EXTRACT_U_1(data + 3) & 0xF;
1125     qdcount = EXTRACT_BE_U_2(data + 4);
1126     ancount = EXTRACT_BE_U_2(data + 6);
1127     nscount = EXTRACT_BE_U_2(data + 8);
1128     arcount = EXTRACT_BE_U_2(data + 10);
1129     startbuf = data;
1130
1131     if (maxbuf <= data)
1132         return;
1133
1134     if (ndo->ndo_vflag > 1)
1135         ND_PRINT("\n>>> ");
1136
1137     ND_PRINT("NBT UDP PACKET(137): %s", tok2str(opcode_str, "OPUNKNOWN", opcode));
1138     if (response) {
1139         ND_PRINT("; %s", rcode ? "NEGATIVE" : "POSITIVE");
1140     }
1141     ND_PRINT("; %s; %s", response ? "RESPONSE" : "REQUEST",
1142               (nm_flags & 1) ? "BROADCAST" : "UNICAST");
1143
1144     if (ndo->ndo_vflag < 2)
1145         return;
1146
1147     ND_PRINT("\nTrnID=0x%X\nOpCode=%u\nNmFlags=0x%X\nRcode=%u\nQueryCount=%u\nAnswerCount=%u\nAuthorityCount=%u\nAddressRecCount=%u\n",
1148         name_trn_id, opcode, nm_flags, rcode, qdcount, ancount, nscount,
1149         arcount);
1150
1151     p = data + 12;
1152
1153     total = ancount + nscount + arcount;
1154
1155     if (qdcount > 100 || total > 100) {
1156         ND_PRINT("Corrupt packet??\n");
1157         return;
1158     }
1159
1160     if (qdcount) {
1161         ND_PRINT("QuestionRecords:\n");
1162         for (i = 0; i < qdcount; i++) {
1163             p = smb_fdata(ndo, p,
1164                 "|Name=[n1]\nQuestionType=[rw]\nQuestionClass=[rw]\n#",
1165                 maxbuf, 0);
1166             if (p == NULL)
1167                 goto out;
1168         }
1169     }
1170
1171     if (total) {
1172         ND_PRINT("\nResourceRecords:\n");
1173         for (i = 0; i < total; i++) {
1174             u_int rdlen;
1175             u_int restype;
1176
1177             p = smb_fdata(ndo, p, "Name=[n1]\n#", maxbuf, 0);
1178             if (p == NULL)
1179                 goto out;
1180             ND_TCHECK_2(p);
1181             restype = EXTRACT_BE_U_2(p);
1182             p = smb_fdata(ndo, p, "ResType=[rw]\nResClass=[rw]\nTTL=[rU]\n", p + 8, 0);
1183             if (p == NULL)
1184                 goto out;
1185             ND_TCHECK_2(p);
1186             rdlen = EXTRACT_BE_U_2(p);
1187             ND_PRINT("ResourceLength=%u\nResourceData=\n", rdlen);
1188             p += 2;
1189             if (rdlen == 6) {
1190                 p = smb_fdata(ndo, p, "AddrType=[rw]\nAddress=[b.b.b.b]\n", p + rdlen, 0);
1191                 if (p == NULL)
1192                     goto out;
1193             } else {
1194                 if (restype == 0x21) {
1195                     u_int numnames;
1196
1197                     ND_TCHECK_1(p);
1198                     numnames = EXTRACT_U_1(p);
1199                     p = smb_fdata(ndo, p, "NumNames=[B]\n", p + 1, 0);
1200                     if (p == NULL)
1201                         goto out;
1202                     while (numnames) {
1203                         p = smb_fdata(ndo, p, "Name=[n2]\t#", maxbuf, 0);
1204                         if (p == NULL)
1205                             goto out;
1206                         ND_TCHECK_1(p);
1207                         if (p >= maxbuf)
1208                             goto out;
1209                         if (EXTRACT_U_1(p) & 0x80)
1210                             ND_PRINT("<GROUP> ");
1211                         switch (EXTRACT_U_1(p) & 0x60) {
1212                         case 0x00: ND_PRINT("B "); break;
1213                         case 0x20: ND_PRINT("P "); break;
1214                         case 0x40: ND_PRINT("M "); break;
1215                         case 0x60: ND_PRINT("_ "); break;
1216                         }
1217                         if (EXTRACT_U_1(p) & 0x10)
1218                             ND_PRINT("<DEREGISTERING> ");
1219                         if (EXTRACT_U_1(p) & 0x08)
1220                             ND_PRINT("<CONFLICT> ");
1221                         if (EXTRACT_U_1(p) & 0x04)
1222                             ND_PRINT("<ACTIVE> ");
1223                         if (EXTRACT_U_1(p) & 0x02)
1224                             ND_PRINT("<PERMANENT> ");
1225                         ND_PRINT("\n");
1226                         p += 2;
1227                         numnames--;
1228                     }
1229                 } else {
1230                     if (p >= maxbuf)
1231                         goto out;
1232                     smb_data_print(ndo, p, min(rdlen, length - (p - data)));
1233                     p += rdlen;
1234                 }
1235             }
1236         }
1237     }
1238
1239     if (p < maxbuf)
1240         smb_fdata(ndo, p, "AdditionalData:\n", maxbuf, 0);
1241
1242 out:
1243     ND_PRINT("\n");
1244     return;
1245 trunc:
1246     nd_print_trunc(ndo);
1247 }
1248
1249 /*
1250  * Print an SMB-over-TCP packet received across tcp on port 445
1251  */
1252 void
1253 smb_tcp_print(netdissect_options *ndo,
1254               const u_char * data, u_int length)
1255 {
1256     u_int caplen;
1257     u_int smb_len;
1258     const u_char *maxbuf;
1259
1260     ndo->ndo_protocol = "smb_tcp";
1261     if (length < 4)
1262         goto trunc;
1263     if (ndo->ndo_snapend < data)
1264         goto trunc;
1265     caplen = ndo->ndo_snapend - data;
1266     if (caplen < 4)
1267         goto trunc;
1268     maxbuf = data + caplen;
1269     smb_len = EXTRACT_BE_U_3(data + 1);
1270     length -= 4;
1271     caplen -= 4;
1272
1273     startbuf = data;
1274     data += 4;
1275
1276     if (smb_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1277         if (smb_len > caplen) {
1278             if (smb_len > length)
1279                 ND_PRINT(" WARNING: Packet is continued in later TCP segments\n");
1280             else
1281                 ND_PRINT(" WARNING: Short packet. Try increasing the snap length by %u\n",
1282                     smb_len - caplen);
1283         } else
1284             ND_PRINT(" ");
1285         print_smb(ndo, data, maxbuf > data + smb_len ? data + smb_len : maxbuf);
1286     } else
1287         ND_PRINT(" SMB-over-TCP packet:(raw data or continuation?)\n");
1288     return;
1289 trunc:
1290     nd_print_trunc(ndo);
1291 }
1292
1293 /*
1294  * print a NBT packet received across udp on port 138
1295  */
1296 void
1297 nbt_udp138_print(netdissect_options *ndo,
1298                  const u_char *data, u_int length)
1299 {
1300     const u_char *maxbuf = data + length;
1301
1302     ndo->ndo_protocol = "nbt_udp138";
1303     if (maxbuf > ndo->ndo_snapend)
1304         maxbuf = ndo->ndo_snapend;
1305     if (maxbuf <= data)
1306         return;
1307     startbuf = data;
1308
1309     if (ndo->ndo_vflag < 2) {
1310         ND_PRINT("NBT UDP PACKET(138)");
1311         return;
1312     }
1313
1314     data = smb_fdata(ndo, data,
1315         "\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#",
1316         maxbuf, 0);
1317
1318     if (data != NULL) {
1319         /* If there isn't enough data for "\377SMB", don't check for it. */
1320         if ((data + 3) >= maxbuf)
1321             goto out;
1322
1323         if (memcmp(data, "\377SMB",4) == 0)
1324             print_smb(ndo, data, maxbuf);
1325     }
1326 out:
1327     ND_PRINT("\n");
1328 }
1329
1330
1331 /*
1332    print netbeui frames
1333 */
1334 static struct nbf_strings {
1335         const char      *name;
1336         const char      *nonverbose;
1337         const char      *verbose;
1338 } nbf_strings[0x20] = {
1339         { "Add Group Name Query", ", [P23]Name to add=[n2]#",
1340           "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1341         { "Add Name Query", ", [P23]Name to add=[n2]#",
1342           "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1343         { "Name In Conflict", NULL, NULL },
1344         { "Status Query", NULL, NULL },
1345         { NULL, NULL, NULL },   /* not used */
1346         { NULL, NULL, NULL },   /* not used */
1347         { NULL, NULL, NULL },   /* not used */
1348         { "Terminate Trace", NULL, NULL },
1349         { "Datagram", NULL,
1350           "[P7]Destination=[n2]\nSource=[n2]\n" },
1351         { "Broadcast Datagram", NULL,
1352           "[P7]Destination=[n2]\nSource=[n2]\n" },
1353         { "Name Query", ", [P7]Name=[n2]#",
1354           "[P1]SessionNumber=[B]\nNameType=[B][P2]\nResponseCorrelator=[w]\nName=[n2]\nName of sender=[n2]\n" },
1355         { NULL, NULL, NULL },   /* not used */
1356         { NULL, NULL, NULL },   /* not used */
1357         { "Add Name Response", ", [P1]GroupName=[w] [P4]Destination=[n2] Source=[n2]#",
1358           "AddNameInProcess=[B]\nGroupName=[w]\nTransmitCorrelator=[w][P2]\nDestination=[n2]\nSource=[n2]\n" },
1359         { "Name Recognized", NULL,
1360           "[P1]Data2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nDestination=[n2]\nSource=[n2]\n" },
1361         { "Status Response", NULL, NULL },
1362         { NULL, NULL, NULL },   /* not used */
1363         { NULL, NULL, NULL },   /* not used */
1364         { NULL, NULL, NULL },   /* not used */
1365         { "Terminate Trace", NULL, NULL },
1366         { "Data Ack", NULL,
1367           "[P3]TransmitCorrelator=[w][P2]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1368         { "Data First/Middle", NULL,
1369           "Flags=[{RECEIVE_CONTINUE|NO_ACK||PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1370         { "Data Only/Last", NULL,
1371           "Flags=[{|NO_ACK|PIGGYBACK_ACK_ALLOWED|PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1372         { "Session Confirm", NULL,
1373           "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1374         { "Session End", NULL,
1375           "[P1]Data2=[w][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1376         { "Session Initialize", NULL,
1377           "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1378         { "No Receive", NULL,
1379           "Flags=[{|SEND_NO_ACK}]\nDataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1380         { "Receive Outstanding", NULL,
1381           "[P1]DataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1382         { "Receive Continue", NULL,
1383           "[P2]TransmitCorrelator=[w]\n[P2]RemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1384         { NULL, NULL, NULL },   /* not used */
1385         { NULL, NULL, NULL },   /* not used */
1386         { "Session Alive", NULL, NULL }
1387 };
1388
1389 void
1390 netbeui_print(netdissect_options *ndo,
1391               u_short control, const u_char *data, u_int length)
1392 {
1393     const u_char *maxbuf = data + length;
1394     u_int len;
1395     u_int command;
1396     const u_char *data2;
1397     int is_truncated = 0;
1398
1399     ndo->ndo_protocol = "netbeui";
1400     if (maxbuf > ndo->ndo_snapend)
1401         maxbuf = ndo->ndo_snapend;
1402     ND_TCHECK_1(data + 4);
1403     len = EXTRACT_LE_U_2(data);
1404     command = EXTRACT_U_1(data + 4);
1405     data2 = data + len;
1406     if (data2 >= maxbuf) {
1407         data2 = maxbuf;
1408         is_truncated = 1;
1409     }
1410
1411     startbuf = data;
1412
1413     if (ndo->ndo_vflag < 2) {
1414         ND_PRINT("NBF Packet: ");
1415         data = smb_fdata(ndo, data, "[P5]#", maxbuf, 0);
1416     } else {
1417         ND_PRINT("\n>>> NBF Packet\nType=0x%X ", control);
1418         data = smb_fdata(ndo, data, "Length=[u] Signature=[w] Command=[B]\n#", maxbuf, 0);
1419     }
1420     if (data == NULL)
1421         goto out;
1422
1423     if (command > 0x1f || nbf_strings[command].name == NULL) {
1424         if (ndo->ndo_vflag < 2)
1425             data = smb_fdata(ndo, data, "Unknown NBF Command#", data2, 0);
1426         else
1427             data = smb_fdata(ndo, data, "Unknown NBF Command\n", data2, 0);
1428     } else {
1429         if (ndo->ndo_vflag < 2) {
1430             ND_PRINT("%s", nbf_strings[command].name);
1431             if (nbf_strings[command].nonverbose != NULL)
1432                 data = smb_fdata(ndo, data, nbf_strings[command].nonverbose, data2, 0);
1433         } else {
1434             ND_PRINT("%s:\n", nbf_strings[command].name);
1435             if (nbf_strings[command].verbose != NULL)
1436                 data = smb_fdata(ndo, data, nbf_strings[command].verbose, data2, 0);
1437             else
1438                 ND_PRINT("\n");
1439         }
1440     }
1441
1442     if (ndo->ndo_vflag < 2)
1443         return;
1444
1445     if (data == NULL)
1446         goto out;
1447
1448     if (is_truncated) {
1449         /* data2 was past the end of the buffer */
1450         goto out;
1451     }
1452
1453     /* If this isn't a command that would contain an SMB message, quit. */
1454     if (command != 0x08 && command != 0x09 && command != 0x15 &&
1455         command != 0x16)
1456         goto out;
1457
1458     /* If there isn't enough data for "\377SMB", don't look for it. */
1459     if ((data2 + 3) >= maxbuf)
1460         goto out;
1461
1462     if (memcmp(data2, "\377SMB",4) == 0)
1463         print_smb(ndo, data2, maxbuf);
1464     else {
1465         u_int i;
1466         for (i = 0; i < 128; i++) {
1467             if ((data2 + i + 3) >= maxbuf)
1468                 break;
1469             if (memcmp(data2 + i, "\377SMB", 4) == 0) {
1470                 ND_PRINT("found SMB packet at %u\n", i);
1471                 print_smb(ndo, data2 + i, maxbuf);
1472                 break;
1473             }
1474         }
1475     }
1476
1477 out:
1478     ND_PRINT("\n");
1479     return;
1480 trunc:
1481     nd_print_trunc(ndo);
1482 }
1483
1484
1485 /*
1486  * print IPX-Netbios frames
1487  */
1488 void
1489 ipx_netbios_print(netdissect_options *ndo,
1490                   const u_char *data, u_int length)
1491 {
1492     /*
1493      * this is a hack till I work out how to parse the rest of the
1494      * NetBIOS-over-IPX stuff
1495      */
1496     u_int i;
1497     const u_char *maxbuf;
1498
1499     ndo->ndo_protocol = "ipx_netbios";
1500     maxbuf = data + length;
1501     /* Don't go past the end of the captured data in the packet. */
1502     if (maxbuf > ndo->ndo_snapend)
1503         maxbuf = ndo->ndo_snapend;
1504     startbuf = data;
1505     for (i = 0; i < 128; i++) {
1506         if ((data + i + 4) > maxbuf)
1507             break;
1508         if (memcmp(data + i, "\377SMB", 4) == 0) {
1509             smb_fdata(ndo, data, "\n>>> IPX transport ", data + i, 0);
1510             print_smb(ndo, data + i, maxbuf);
1511             ND_PRINT("\n");
1512             break;
1513         }
1514     }
1515     if (i == 128)
1516         smb_fdata(ndo, data, "\n>>> Unknown IPX ", maxbuf, 0);
1517 }