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 = GET_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 = GET_LE_U_2(w + 9 * 2);
 187         param = buf + GET_LE_U_2(w + 10 * 2);
 188         dcnt = GET_LE_U_2(w + 11 * 2);
 189         data = buf + GET_LE_U_2(w + 12 * 2);
 190         fn = smbfindint(GET_LE_U_2(w + 14 * 2), trans2_fns);
 191     } else {
 192         if (GET_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 = GET_LE_U_2(w + 3 * 2);
 199         param = buf + GET_LE_U_2(w + 4 * 2);
 200         dcnt = GET_LE_U_2(w + 6 * 2);
 201         data = buf + GET_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 (GET_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 = GET_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 = GET_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 = GET_LE_U_2(w + 9 * 2);
 348         param = buf + GET_LE_U_2(w + 10 * 2);
 349         datalen = GET_LE_U_2(w + 11 * 2);
 350         data = buf + GET_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 = GET_LE_U_2(w + 3 * 2);
 358         param = buf + GET_LE_U_2(w + 4 * 2);
 359         datalen = GET_LE_U_2(w + 6 * 2);
 360         data = buf + GET_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 * GET_U_1(words), maxbuf),
 369               unicodestr);
 370
 371     ND_TCHECK_2(data1);
 372     bcc = GET_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 #define MAILSLOT_BROWSE_STR "\\MAILSLOT\\BROWSE"
 378         ND_TCHECK_LEN(data1 + 2, strlen(MAILSLOT_BROWSE_STR) + 1);
 379         if (strcmp((const char *)(data1 + 2), MAILSLOT_BROWSE_STR) == 0) {
 380             print_browse(ndo, param, paramlen, data, datalen);
 381             return;
 382         }
 383 #undef MAILSLOT_BROWSE_STR
 384
 385 #define PIPE_LANMAN_STR "\\PIPE\\LANMAN"
 386         ND_TCHECK_LEN(data1 + 2, strlen(PIPE_LANMAN_STR) + 1);
 387         if (strcmp((const char *)(data1 + 2), PIPE_LANMAN_STR) == 0) {
 388             print_ipc(ndo, param, paramlen, data, datalen);
 389             return;
 390         }
 391 #undef PIPE_LANMAN_STR
 392
 393         if (paramlen)
 394             smb_fdata(ndo, param, f3, min(param + paramlen, maxbuf), unicodestr);
 395         if (datalen)
 396             smb_fdata(ndo, data, f4, min(data + datalen, maxbuf), unicodestr);
 397     }
 398     return;
 399 trunc:
 400     nd_print_trunc(ndo);
 401 }
 402
 403
 404 static void
 405 print_negprot(netdissect_options *ndo,
 406               const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 407 {
 408     u_int wct, bcc;
 409     const char *f1 = NULL, *f2 = NULL;
 410
 411     ND_TCHECK_1(words);
 412     wct = GET_U_1(words);
 413     if (request)
 414         f2 = "*|Dialect=[Y]\n";
 415     else {
 416         if (wct == 1)
 417             f1 = "Core Protocol\nDialectIndex=[u]";
 418         else if (wct == 17)
 419             f1 = "NT1 Protocol\nDialectIndex=[u]\nSecMode=[B]\nMaxMux=[u]\nNumVcs=[u]\nMaxBuffer=[U]\nRawSize=[U]\nSessionKey=[W]\nCapabilities=[W]\nServerTime=[T3]TimeZone=[u]\nCryptKey=";
 420         else if (wct == 13)
 421             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=";
 422     }
 423
 424     if (f1)
 425         smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
 426             unicodestr);
 427     else
 428         smb_data_print(ndo, words + 1, min(wct * 2, ND_BYTES_BETWEEN(maxbuf, words + 1)));
 429
 430     ND_TCHECK_2(data);
 431     bcc = GET_LE_U_2(data);
 432     ND_PRINT("smb_bcc=%u\n", bcc);
 433     if (bcc > 0) {
 434         if (f2)
 435             smb_fdata(ndo, data + 2, f2, min(data + 2 + GET_LE_U_2(data),
 436                                              maxbuf), unicodestr);
 437         else
 438             smb_data_print(ndo, data + 2,
 439                            min(GET_LE_U_2(data), ND_BYTES_BETWEEN(maxbuf, data + 2)));
 440     }
 441     return;
 442 trunc:
 443     nd_print_trunc(ndo);
 444 }
 445
 446 static void
 447 print_sesssetup(netdissect_options *ndo,
 448                 const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 449 {
 450     u_int wct, bcc;
 451     const char *f1 = NULL, *f2 = NULL;
 452
 453     ND_TCHECK_1(words);
 454     wct = GET_U_1(words);
 455     if (request) {
 456         if (wct == 10)
 457             f1 = "Com2=[w]\nOff2=[u]\nBufSize=[u]\nMpxMax=[u]\nVcNum=[u]\nSessionKey=[W]\nPassLen=[u]\nCryptLen=[u]\nCryptOff=[u]\nPass&Name=\n";
 458         else
 459             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";
 460     } else {
 461         if (wct == 3) {
 462             f1 = "Com2=[w]\nOff2=[u]\nAction=[w]\n";
 463         } else if (wct == 13) {
 464             f1 = "Com2=[B]\nRes=[B]\nOff2=[u]\nAction=[w]\n";
 465             f2 = "NativeOS=[S]\nNativeLanMan=[S]\nPrimaryDomain=[S]\n";
 466         }
 467     }
 468
 469     if (f1)
 470         smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
 471             unicodestr);
 472     else
 473         smb_data_print(ndo, words + 1, min(wct * 2, ND_BYTES_BETWEEN(maxbuf, words + 1)));
 474
 475     ND_TCHECK_2(data);
 476     bcc = GET_LE_U_2(data);
 477     ND_PRINT("smb_bcc=%u\n", bcc);
 478     if (bcc > 0) {
 479         if (f2)
 480             smb_fdata(ndo, data + 2, f2, min(data + 2 + GET_LE_U_2(data),
 481                                              maxbuf), unicodestr);
 482         else
 483             smb_data_print(ndo, data + 2,
 484                            min(GET_LE_U_2(data), ND_BYTES_BETWEEN(maxbuf, data + 2)));
 485     }
 486     return;
 487 trunc:
 488     nd_print_trunc(ndo);
 489 }
 490
 491 static void
 492 print_lockingandx(netdissect_options *ndo,
 493                   const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 494 {
 495     u_int wct, bcc;
 496     const u_char *maxwords;
 497     const char *f1 = NULL, *f2 = NULL;
 498
 499     ND_TCHECK_1(words);
 500     wct = GET_U_1(words);
 501     if (request) {
 502         f1 = "Com2=[w]\nOff2=[u]\nHandle=[u]\nLockType=[w]\nTimeOut=[D]\nUnlockCount=[u]\nLockCount=[u]\n";
 503         ND_TCHECK_1(words + 7);
 504         if (GET_U_1(words + 7) & 0x10)
 505             f2 = "*Process=[u]\n[P2]Offset=[M]\nLength=[M]\n";
 506         else
 507             f2 = "*Process=[u]\nOffset=[D]\nLength=[U]\n";
 508     } else {
 509         f1 = "Com2=[w]\nOff2=[u]\n";
 510     }
 511
 512     maxwords = min(words + 1 + wct * 2, maxbuf);
 513     if (wct)
 514         smb_fdata(ndo, words + 1, f1, maxwords, unicodestr);
 515
 516     ND_TCHECK_2(data);
 517     bcc = GET_LE_U_2(data);
 518     ND_PRINT("smb_bcc=%u\n", bcc);
 519     if (bcc > 0) {
 520         if (f2)
 521             smb_fdata(ndo, data + 2, f2, min(data + 2 + GET_LE_U_2(data),
 522                                              maxbuf), unicodestr);
 523         else
 524             smb_data_print(ndo, data + 2,
 525                            min(GET_LE_U_2(data), ND_BYTES_BETWEEN(maxbuf, data + 2)));
 526     }
 527     return;
 528 trunc:
 529     nd_print_trunc(ndo);
 530 }
 531
 532
 533 static const struct smbfns smb_fns[] = {
 534     { -1, "SMBunknown", 0, DEFDESCRIPT },
 535
 536     { SMBtcon, "SMBtcon", 0,
 537         { NULL, "Path=[Z]\nPassword=[Z]\nDevice=[Z]\n",
 538           "MaxXmit=[u]\nTreeId=[u]\n", NULL,
 539           NULL } },
 540
 541     { SMBtdis, "SMBtdis", 0, DEFDESCRIPT },
 542     { SMBexit,  "SMBexit", 0, DEFDESCRIPT },
 543     { SMBioctl, "SMBioctl", 0, DEFDESCRIPT },
 544
 545     { SMBecho, "SMBecho", 0,
 546         { "ReverbCount=[u]\n", NULL,
 547           "SequenceNum=[u]\n", NULL,
 548           NULL } },
 549
 550     { SMBulogoffX, "SMBulogoffX", FLG_CHAIN, DEFDESCRIPT },
 551
 552     { SMBgetatr, "SMBgetatr", 0,
 553         { NULL, "Path=[Z]\n",
 554           "Attribute=[A]\nTime=[T2]Size=[U]\nRes=([w,w,w,w,w])\n", NULL,
 555           NULL } },
 556
 557     { SMBsetatr, "SMBsetatr", 0,
 558         { "Attribute=[A]\nTime=[T2]Res=([w,w,w,w,w])\n", "Path=[Z]\n",
 559           NULL, NULL, NULL } },
 560
 561     { SMBchkpth, "SMBchkpth", 0,
 562        { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 563
 564     { SMBsearch, "SMBsearch", 0,
 565         { "Count=[u]\nAttrib=[A]\n",
 566           "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\nRes2=[W]\n",
 567           "Count=[u]\n",
 568           "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",
 569           NULL } },
 570
 571     { SMBopen, "SMBopen", 0,
 572         { "Mode=[w]\nAttribute=[A]\n", "Path=[Z]\n",
 573           "Handle=[u]\nOAttrib=[A]\nTime=[T2]Size=[U]\nAccess=[w]\n",
 574           NULL, NULL } },
 575
 576     { SMBcreate, "SMBcreate", 0,
 577         { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[u]\n", NULL, NULL } },
 578
 579     { SMBmknew, "SMBmknew", 0,
 580         { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[u]\n", NULL, NULL } },
 581
 582     { SMBunlink, "SMBunlink", 0,
 583         { "Attrib=[A]\n", "Path=[Z]\n", NULL, NULL, NULL } },
 584
 585     { SMBread, "SMBread", 0,
 586         { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
 587           "Count=[u]\nRes=([w,w,w,w])\n", NULL, NULL } },
 588
 589     { SMBwrite, "SMBwrite", 0,
 590         { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
 591           "Count=[u]\n", NULL, NULL } },
 592
 593     { SMBclose, "SMBclose", 0,
 594         { "Handle=[u]\nTime=[T2]", NULL, NULL, NULL, NULL } },
 595
 596     { SMBmkdir, "SMBmkdir", 0,
 597         { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 598
 599     { SMBrmdir, "SMBrmdir", 0,
 600         { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 601
 602     { SMBdskattr, "SMBdskattr", 0,
 603         { NULL, NULL,
 604           "TotalUnits=[u]\nBlocksPerUnit=[u]\nBlockSize=[u]\nFreeUnits=[u]\nMedia=[w]\n",
 605           NULL, NULL } },
 606
 607     { SMBmv, "SMBmv", 0,
 608         { "Attrib=[A]\n", "OldPath=[Z]\nNewPath=[Z]\n", NULL, NULL, NULL } },
 609
 610     /*
 611      * this is a Pathworks specific call, allowing the
 612      * changing of the root path
 613      */
 614     { pSETDIR, "SMBsetdir", 0, { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 615
 616     { SMBlseek, "SMBlseek", 0,
 617         { "Handle=[u]\nMode=[w]\nOffset=[D]\n", "Offset=[D]\n", NULL, NULL, NULL } },
 618
 619     { SMBflush, "SMBflush", 0, { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 620
 621     { SMBsplopen, "SMBsplopen", 0,
 622         { "SetupLen=[u]\nMode=[w]\n", "Ident=[Z]\n", "Handle=[u]\n",
 623           NULL, NULL } },
 624
 625     { SMBsplclose, "SMBsplclose", 0,
 626         { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 627
 628     { SMBsplretq, "SMBsplretq", 0,
 629         { "MaxCount=[u]\nStartIndex=[u]\n", NULL,
 630           "Count=[u]\nIndex=[u]\n",
 631           "*Time=[T2]Status=[B]\nJobID=[u]\nSize=[U]\nRes=[B]Name=[s16]\n",
 632           NULL } },
 633
 634     { SMBsplwr, "SMBsplwr", 0,
 635         { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 636
 637     { SMBlock, "SMBlock", 0,
 638         { "Handle=[u]\nCount=[U]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
 639
 640     { SMBunlock, "SMBunlock", 0,
 641         { "Handle=[u]\nCount=[U]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
 642
 643     /* CORE+ PROTOCOL FOLLOWS */
 644
 645     { SMBreadbraw, "SMBreadbraw", 0,
 646         { "Handle=[u]\nOffset=[D]\nMaxCount=[u]\nMinCount=[u]\nTimeOut=[D]\nRes=[u]\n",
 647           NULL, NULL, NULL, NULL } },
 648
 649     { SMBwritebraw, "SMBwritebraw", 0,
 650         { "Handle=[u]\nTotalCount=[u]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\n|DataSize=[u]\nDataOff=[u]\n",
 651           NULL, "WriteRawAck", NULL, NULL } },
 652
 653     { SMBwritec, "SMBwritec", 0,
 654         { NULL, NULL, "Count=[u]\n", NULL, NULL } },
 655
 656     { SMBwriteclose, "SMBwriteclose", 0,
 657         { "Handle=[u]\nCount=[u]\nOffset=[D]\nTime=[T2]Res=([w,w,w,w,w,w])",
 658           NULL, "Count=[u]\n", NULL, NULL } },
 659
 660     { SMBlockread, "SMBlockread", 0,
 661         { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
 662           "Count=[u]\nRes=([w,w,w,w])\n", NULL, NULL } },
 663
 664     { SMBwriteunlock, "SMBwriteunlock", 0,
 665         { "Handle=[u]\nByteCount=[u]\nOffset=[D]\nCountLeft=[u]\n", NULL,
 666           "Count=[u]\n", NULL, NULL } },
 667
 668     { SMBreadBmpx, "SMBreadBmpx", 0,
 669         { "Handle=[u]\nOffset=[D]\nMaxCount=[u]\nMinCount=[u]\nTimeOut=[D]\nRes=[w]\n",
 670           NULL,
 671           "Offset=[D]\nTotCount=[u]\nRemaining=[u]\nRes=([w,w])\nDataSize=[u]\nDataOff=[u]\n",
 672           NULL, NULL } },
 673
 674     { SMBwriteBmpx, "SMBwriteBmpx", 0,
 675         { "Handle=[u]\nTotCount=[u]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\nDataSize=[u]\nDataOff=[u]\n", NULL,
 676           "Remaining=[u]\n", NULL, NULL } },
 677
 678     { SMBwriteBs, "SMBwriteBs", 0,
 679         { "Handle=[u]\nTotCount=[u]\nOffset=[D]\nRes=[W]\nDataSize=[u]\nDataOff=[u]\n",
 680           NULL, "Count=[u]\n", NULL, NULL } },
 681
 682     { SMBsetattrE, "SMBsetattrE", 0,
 683         { "Handle=[u]\nCreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]", NULL,
 684           NULL, NULL, NULL } },
 685
 686     { SMBgetattrE, "SMBgetattrE", 0,
 687         { "Handle=[u]\n", NULL,
 688           "CreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]Size=[U]\nAllocSize=[U]\nAttribute=[A]\n",
 689           NULL, NULL } },
 690
 691     { SMBtranss, "SMBtranss", 0, DEFDESCRIPT },
 692     { SMBioctls, "SMBioctls", 0, DEFDESCRIPT },
 693
 694     { SMBcopy, "SMBcopy", 0,
 695         { "TreeID2=[u]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
 696           "CopyCount=[u]\n",  "|ErrStr=[S]\n",  NULL } },
 697
 698     { SMBmove, "SMBmove", 0,
 699         { "TreeID2=[u]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
 700           "MoveCount=[u]\n",  "|ErrStr=[S]\n",  NULL } },
 701
 702     { SMBopenX, "SMBopenX", FLG_CHAIN,
 703         { "Com2=[w]\nOff2=[u]\nFlags=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]OFun=[w]\nSize=[U]\nTimeOut=[D]\nRes=[W]\n",
 704           "Path=[S]\n",
 705           "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",
 706           NULL, NULL } },
 707
 708     { SMBreadX, "SMBreadX", FLG_CHAIN,
 709         { "Com2=[w]\nOff2=[u]\nHandle=[u]\nOffset=[D]\nMaxCount=[u]\nMinCount=[u]\nTimeOut=[D]\nCountLeft=[u]\n",
 710           NULL,
 711           "Com2=[w]\nOff2=[u]\nRemaining=[u]\nRes=[W]\nDataSize=[u]\nDataOff=[u]\nRes=([w,w,w,w])\n",
 712           NULL, NULL } },
 713
 714     { SMBwriteX, "SMBwriteX", FLG_CHAIN,
 715         { "Com2=[w]\nOff2=[u]\nHandle=[u]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nCountLeft=[u]\nRes=[w]\nDataSize=[u]\nDataOff=[u]\n",
 716           NULL,
 717           "Com2=[w]\nOff2=[u]\nCount=[u]\nRemaining=[u]\nRes=[W]\n",
 718           NULL, NULL } },
 719
 720     { SMBffirst, "SMBffirst", 0,
 721         { "Count=[u]\nAttrib=[A]\n",
 722           "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\n",
 723           "Count=[u]\n",
 724           "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",
 725           NULL } },
 726
 727     { SMBfunique, "SMBfunique", 0,
 728         { "Count=[u]\nAttrib=[A]\n",
 729           "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\n",
 730           "Count=[u]\n",
 731           "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",
 732           NULL } },
 733
 734     { SMBfclose, "SMBfclose", 0,
 735         { "Count=[u]\nAttrib=[A]\n",
 736           "Path=[Z]\nBlkType=[B]\nBlkLen=[u]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[u]\nSrv2=[w]\n",
 737           "Count=[u]\n",
 738           "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",
 739           NULL } },
 740
 741     { SMBfindnclose, "SMBfindnclose", 0,
 742         { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 743
 744     { SMBfindclose, "SMBfindclose", 0,
 745         { "Handle=[u]\n", NULL, NULL, NULL, NULL } },
 746
 747     { SMBsends, "SMBsends", 0,
 748         { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
 749
 750     { SMBsendstrt, "SMBsendstrt", 0,
 751         { NULL, "Source=[Z]\nDest=[Z]\n", "GroupID=[u]\n", NULL, NULL } },
 752
 753     { SMBsendend, "SMBsendend", 0,
 754         { "GroupID=[u]\n", NULL, NULL, NULL, NULL } },
 755
 756     { SMBsendtxt, "SMBsendtxt", 0,
 757         { "GroupID=[u]\n", NULL, NULL, NULL, NULL } },
 758
 759     { SMBsendb, "SMBsendb", 0,
 760         { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
 761
 762     { SMBfwdname, "SMBfwdname", 0, DEFDESCRIPT },
 763     { SMBcancelf, "SMBcancelf", 0, DEFDESCRIPT },
 764     { SMBgetmac, "SMBgetmac", 0, DEFDESCRIPT },
 765
 766     { SMBnegprot, "SMBnegprot", 0,
 767         { NULL, NULL, NULL, NULL, print_negprot } },
 768
 769     { SMBsesssetupX, "SMBsesssetupX", FLG_CHAIN,
 770         { NULL, NULL, NULL, NULL, print_sesssetup } },
 771
 772     { SMBtconX, "SMBtconX", FLG_CHAIN,
 773         { "Com2=[w]\nOff2=[u]\nFlags=[w]\nPassLen=[u]\nPasswd&Path&Device=\n",
 774           NULL, "Com2=[w]\nOff2=[u]\n", "ServiceType=[R]\n", NULL } },
 775
 776     { SMBlockingX, "SMBlockingX", FLG_CHAIN,
 777         { NULL, NULL, NULL, NULL, print_lockingandx } },
 778
 779     { SMBtrans2, "SMBtrans2", 0, { NULL, NULL, NULL, NULL, print_trans2 } },
 780
 781     { SMBtranss2, "SMBtranss2", 0, DEFDESCRIPT },
 782     { SMBctemp, "SMBctemp", 0, DEFDESCRIPT },
 783     { SMBreadBs, "SMBreadBs", 0, DEFDESCRIPT },
 784     { SMBtrans, "SMBtrans", 0, { NULL, NULL, NULL, NULL, print_trans } },
 785
 786     { SMBnttrans, "SMBnttrans", 0, DEFDESCRIPT },
 787     { SMBnttranss, "SMBnttranss", 0, DEFDESCRIPT },
 788
 789     { SMBntcreateX, "SMBntcreateX", FLG_CHAIN,
 790         { "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",
 791           "Path=[C]\n",
 792           "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",
 793           NULL, NULL } },
 794
 795     { SMBntcancel, "SMBntcancel", 0, DEFDESCRIPT },
 796
 797     { -1, NULL, 0, DEFDESCRIPT }
 798 };
 799
 800
 801 /*
 802  * print a SMB message
 803  */
 804 static void
 805 print_smb(netdissect_options *ndo,
 806           const u_char *buf, const u_char *maxbuf)
 807 {
 808     uint16_t flags2;
 809     u_int nterrcodes;
 810     u_int command;
 811     uint32_t nterror;
 812     const u_char *words, *maxwords, *data;
 813     const struct smbfns *fn;
 814     const char *fmt_smbheader =
 815         "[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";
 816     u_int smboffset;
 817
 818     ndo->ndo_protocol = "smb";
 819
 820     ND_TCHECK_1(buf + 9);
 821     request = (GET_U_1(buf + 9) & 0x80) ? 0 : 1;
 822     startbuf = buf;
 823
 824     command = GET_U_1(buf + 4);
 825
 826     fn = smbfind(command, smb_fns);
 827
 828     if (ndo->ndo_vflag > 1)
 829         ND_PRINT("\n");
 830
 831     ND_PRINT("SMB PACKET: %s (%s)", fn->name, request ? "REQUEST" : "REPLY");
 832
 833     if (ndo->ndo_vflag < 2)
 834         return;
 835
 836     ND_PRINT("\n");
 837     ND_TCHECK_2(buf + 10);
 838     flags2 = GET_LE_U_2(buf + 10);
 839     unicodestr = flags2 & 0x8000;
 840     nterrcodes = flags2 & 0x4000;
 841
 842     /* print out the header */
 843     smb_fdata(ndo, buf, fmt_smbheader, buf + 33, unicodestr);
 844
 845     if (nterrcodes) {
 846         nterror = GET_LE_U_4(buf + 5);
 847         if (nterror)
 848             ND_PRINT("NTError = %s\n", nt_errstr(nterror));
 849     } else {
 850         if (GET_U_1(buf + 5))
 851             ND_PRINT("SMBError = %s\n", smb_errstr(GET_U_1(buf + 5),
 852                                                    GET_LE_U_2(buf + 7)));
 853     }
 854
 855     smboffset = 32;
 856
 857     for (;;) {
 858         const char *f1, *f2;
 859         int wct;
 860         u_int bcc;
 861         u_int newsmboffset;
 862
 863         words = buf + smboffset;
 864         ND_TCHECK_1(words);
 865         wct = GET_U_1(words);
 866         data = words + 1 + wct * 2;
 867         maxwords = min(data, maxbuf);
 868
 869         if (request) {
 870             f1 = fn->descript.req_f1;
 871             f2 = fn->descript.req_f2;
 872         } else {
 873             f1 = fn->descript.rep_f1;
 874             f2 = fn->descript.rep_f2;
 875         }
 876
 877         smb_reset();
 878         if (fn->descript.fn)
 879             (*fn->descript.fn)(ndo, words, data, buf, maxbuf);
 880         else {
 881             if (wct) {
 882                 if (f1)
 883                     smb_fdata(ndo, words + 1, f1, words + 1 + wct * 2, unicodestr);
 884                 else {
 885                     u_int i;
 886                     u_int v;
 887
 888                     for (i = 0; words + 1 + 2 * i < maxwords; i++) {
 889                         ND_TCHECK_2(words + 1 + 2 * i);
 890                         v = GET_LE_U_2(words + 1 + 2 * i);
 891                         ND_PRINT("smb_vwv[%u]=%u (0x%X)\n", i, v, v);
 892                     }
 893                 }
 894             }
 895
 896             ND_TCHECK_2(data);
 897             bcc = GET_LE_U_2(data);
 898             ND_PRINT("smb_bcc=%u\n", bcc);
 899             if (f2) {
 900                 if (bcc > 0)
 901                     smb_fdata(ndo, data + 2, f2, data + 2 + bcc, unicodestr);
 902             } else {
 903                 if (bcc > 0) {
 904                     ND_PRINT("smb_buf[]=\n");
 905                     smb_data_print(ndo, data + 2, min(bcc, ND_BYTES_BETWEEN(maxbuf, data + 2)));
 906                 }
 907             }
 908         }
 909
 910         if ((fn->flags & FLG_CHAIN) == 0)
 911             break;
 912         if (wct == 0)
 913             break;
 914         ND_TCHECK_1(words + 1);
 915         command = GET_U_1(words + 1);
 916         if (command == 0xFF)
 917             break;
 918         ND_TCHECK_2(words + 3);
 919         newsmboffset = GET_LE_U_2(words + 3);
 920
 921         fn = smbfind(command, smb_fns);
 922
 923         ND_PRINT("\nSMB PACKET: %s (%s) (CHAINED)\n",
 924             fn->name, request ? "REQUEST" : "REPLY");
 925         if (newsmboffset <= smboffset) {
 926             ND_PRINT("Bad andX offset: %u <= %u\n", newsmboffset, smboffset);
 927             break;
 928         }
 929         smboffset = newsmboffset;
 930     }
 931
 932     return;
 933 trunc:
 934     nd_print_trunc(ndo);
 935 }
 936
 937
 938 /*
 939  * print a NBT packet received across tcp on port 139
 940  */
 941 void
 942 nbt_tcp_print(netdissect_options *ndo,
 943               const u_char *data, u_int length)
 944 {
 945     u_int caplen;
 946     u_int type;
 947     u_int nbt_len;
 948     const u_char *maxbuf;
 949
 950     ndo->ndo_protocol = "nbt_tcp";
 951     if (length < 4)
 952         goto trunc;
 953     if (ndo->ndo_snapend < data)
 954         goto trunc;
 955     caplen = ND_BYTES_AVAILABLE_AFTER(data);
 956     if (caplen < 4)
 957         goto trunc;
 958     maxbuf = data + caplen;
 959     ND_TCHECK_1(data);
 960     type = GET_U_1(data);
 961     ND_TCHECK_2(data + 2);
 962     nbt_len = GET_BE_U_2(data + 2);
 963     length -= 4;
 964     caplen -= 4;
 965
 966     startbuf = data;
 967
 968     if (ndo->ndo_vflag < 2) {
 969         ND_PRINT(" NBT Session Packet: ");
 970         switch (type) {
 971         case 0x00:
 972             ND_PRINT("Session Message");
 973             break;
 974
 975         case 0x81:
 976             ND_PRINT("Session Request");
 977             break;
 978
 979         case 0x82:
 980             ND_PRINT("Session Granted");
 981             break;
 982
 983         case 0x83:
 984           {
 985             u_int ecode;
 986
 987             if (nbt_len < 4)
 988                 goto trunc;
 989             if (length < 4)
 990                 goto trunc;
 991             if (caplen < 4)
 992                 goto trunc;
 993             ecode = GET_U_1(data + 4);
 994
 995             ND_PRINT("Session Reject, ");
 996             switch (ecode) {
 997             case 0x80:
 998                 ND_PRINT("Not listening on called name");
 999                 break;
1000             case 0x81:
1001                 ND_PRINT("Not listening for calling name");
1002                 break;
1003             case 0x82:
1004                 ND_PRINT("Called name not present");
1005                 break;
1006             case 0x83:
1007                 ND_PRINT("Called name present, but insufficient resources");
1008                 break;
1009             default:
1010                 ND_PRINT("Unspecified error 0x%X", ecode);
1011                 break;
1012             }
1013           }
1014             break;
1015
1016         case 0x85:
1017             ND_PRINT("Session Keepalive");
1018             break;
1019
1020         default:
1021             data = smb_fdata(ndo, data, "Unknown packet type [rB]", maxbuf, 0);
1022             break;
1023         }
1024     } else {
1025         ND_PRINT("\n>>> NBT Session Packet\n");
1026         switch (type) {
1027         case 0x00:
1028             data = smb_fdata(ndo, data, "[P1]NBT Session Message\nFlags=[B]\nLength=[ru]\n",
1029                 data + 4, 0);
1030             if (data == NULL)
1031                 break;
1032             if (nbt_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1033                 if (nbt_len > caplen) {
1034                     if (nbt_len > length)
1035                         ND_PRINT("WARNING: Packet is continued in later TCP segments\n");
1036                     else
1037                         ND_PRINT("WARNING: Short packet. Try increasing the snap length by %u\n",
1038                             nbt_len - caplen);
1039                 }
1040                 print_smb(ndo, data, maxbuf > data + nbt_len ? data + nbt_len : maxbuf);
1041             } else
1042                 ND_PRINT("Session packet:(raw data or continuation?)\n");
1043             break;
1044
1045         case 0x81:
1046             data = smb_fdata(ndo, data,
1047                 "[P1]NBT Session Request\nFlags=[B]\nLength=[ru]\nDestination=[n1]\nSource=[n1]\n",
1048                 maxbuf, 0);
1049             break;
1050
1051         case 0x82:
1052             data = smb_fdata(ndo, data, "[P1]NBT Session Granted\nFlags=[B]\nLength=[ru]\n", maxbuf, 0);
1053             break;
1054
1055         case 0x83:
1056           {
1057             const u_char *origdata;
1058             u_int ecode;
1059
1060             origdata = data;
1061             data = smb_fdata(ndo, data, "[P1]NBT SessionReject\nFlags=[B]\nLength=[ru]\nReason=[B]\n",
1062                 maxbuf, 0);
1063             if (data == NULL)
1064                 break;
1065             if (nbt_len >= 1 && caplen >= 1) {
1066                 ecode = GET_U_1(origdata + 4);
1067                 switch (ecode) {
1068                 case 0x80:
1069                     ND_PRINT("Not listening on called name\n");
1070                     break;
1071                 case 0x81:
1072                     ND_PRINT("Not listening for calling name\n");
1073                     break;
1074                 case 0x82:
1075                     ND_PRINT("Called name not present\n");
1076                     break;
1077                 case 0x83:
1078                     ND_PRINT("Called name present, but insufficient resources\n");
1079                     break;
1080                 default:
1081                     ND_PRINT("Unspecified error 0x%X\n", ecode);
1082                     break;
1083                 }
1084             }
1085           }
1086             break;
1087
1088         case 0x85:
1089             data = smb_fdata(ndo, data, "[P1]NBT Session Keepalive\nFlags=[B]\nLength=[ru]\n", maxbuf, 0);
1090             break;
1091
1092         default:
1093             data = smb_fdata(ndo, data, "NBT - Unknown packet type\nType=[B]\n", maxbuf, 0);
1094             break;
1095         }
1096     }
1097     return;
1098 trunc:
1099     nd_print_trunc(ndo);
1100 }
1101
1102 static const struct tok opcode_str[] = {
1103         { 0,  "QUERY"                   },
1104         { 5,  "REGISTRATION"            },
1105         { 6,  "RELEASE"                 },
1106         { 7,  "WACK"                    },
1107         { 8,  "REFRESH(8)"              },
1108         { 9,  "REFRESH"                 },
1109         { 15, "MULTIHOMED REGISTRATION" },
1110         { 0, NULL }
1111 };
1112
1113 /*
1114  * print a NBT packet received across udp on port 137
1115  */
1116 void
1117 nbt_udp137_print(netdissect_options *ndo,
1118                  const u_char *data, u_int length)
1119 {
1120     const u_char *maxbuf = data + length;
1121     u_int name_trn_id, response, opcode, nm_flags, rcode;
1122     u_int qdcount, ancount, nscount, arcount;
1123     const u_char *p;
1124     u_int total, i;
1125
1126     ndo->ndo_protocol = "nbt_udp137";
1127     ND_TCHECK_2(data + 10);
1128     name_trn_id = GET_BE_U_2(data);
1129     response = (GET_U_1(data + 2) >> 7);
1130     opcode = (GET_U_1(data + 2) >> 3) & 0xF;
1131     nm_flags = ((GET_U_1(data + 2) & 0x7) << 4) + (GET_U_1(data + 3) >> 4);
1132     rcode = GET_U_1(data + 3) & 0xF;
1133     qdcount = GET_BE_U_2(data + 4);
1134     ancount = GET_BE_U_2(data + 6);
1135     nscount = GET_BE_U_2(data + 8);
1136     arcount = GET_BE_U_2(data + 10);
1137     startbuf = data;
1138
1139     if (maxbuf <= data)
1140         return;
1141
1142     if (ndo->ndo_vflag > 1)
1143         ND_PRINT("\n>>> ");
1144
1145     ND_PRINT("NBT UDP PACKET(137): %s", tok2str(opcode_str, "OPUNKNOWN", opcode));
1146     if (response) {
1147         ND_PRINT("; %s", rcode ? "NEGATIVE" : "POSITIVE");
1148     }
1149     ND_PRINT("; %s; %s", response ? "RESPONSE" : "REQUEST",
1150               (nm_flags & 1) ? "BROADCAST" : "UNICAST");
1151
1152     if (ndo->ndo_vflag < 2)
1153         return;
1154
1155     ND_PRINT("\nTrnID=0x%X\nOpCode=%u\nNmFlags=0x%X\nRcode=%u\nQueryCount=%u\nAnswerCount=%u\nAuthorityCount=%u\nAddressRecCount=%u\n",
1156         name_trn_id, opcode, nm_flags, rcode, qdcount, ancount, nscount,
1157         arcount);
1158
1159     p = data + 12;
1160
1161     total = ancount + nscount + arcount;
1162
1163     if (qdcount > 100 || total > 100) {
1164         ND_PRINT("Corrupt packet??\n");
1165         return;
1166     }
1167
1168     if (qdcount) {
1169         ND_PRINT("QuestionRecords:\n");
1170         for (i = 0; i < qdcount; i++) {
1171             p = smb_fdata(ndo, p,
1172                 "|Name=[n1]\nQuestionType=[rw]\nQuestionClass=[rw]\n#",
1173                 maxbuf, 0);
1174             if (p == NULL)
1175                 goto out;
1176         }
1177     }
1178
1179     if (total) {
1180         ND_PRINT("\nResourceRecords:\n");
1181         for (i = 0; i < total; i++) {
1182             u_int rdlen;
1183             u_int restype;
1184
1185             p = smb_fdata(ndo, p, "Name=[n1]\n#", maxbuf, 0);
1186             if (p == NULL)
1187                 goto out;
1188             ND_TCHECK_2(p);
1189             restype = GET_BE_U_2(p);
1190             p = smb_fdata(ndo, p, "ResType=[rw]\nResClass=[rw]\nTTL=[rU]\n", p + 8, 0);
1191             if (p == NULL)
1192                 goto out;
1193             ND_TCHECK_2(p);
1194             rdlen = GET_BE_U_2(p);
1195             ND_PRINT("ResourceLength=%u\nResourceData=\n", rdlen);
1196             p += 2;
1197             if (rdlen == 6) {
1198                 p = smb_fdata(ndo, p, "AddrType=[rw]\nAddress=[b.b.b.b]\n", p + rdlen, 0);
1199                 if (p == NULL)
1200                     goto out;
1201             } else {
1202                 if (restype == 0x21) {
1203                     u_int numnames;
1204
1205                     ND_TCHECK_1(p);
1206                     numnames = GET_U_1(p);
1207                     p = smb_fdata(ndo, p, "NumNames=[B]\n", p + 1, 0);
1208                     if (p == NULL)
1209                         goto out;
1210                     while (numnames) {
1211                         p = smb_fdata(ndo, p, "Name=[n2]\t#", maxbuf, 0);
1212                         if (p == NULL)
1213                             goto out;
1214                         ND_TCHECK_1(p);
1215                         if (p >= maxbuf)
1216                             goto out;
1217                         if (GET_U_1(p) & 0x80)
1218                             ND_PRINT("<GROUP> ");
1219                         switch (GET_U_1(p) & 0x60) {
1220                         case 0x00: ND_PRINT("B "); break;
1221                         case 0x20: ND_PRINT("P "); break;
1222                         case 0x40: ND_PRINT("M "); break;
1223                         case 0x60: ND_PRINT("_ "); break;
1224                         }
1225                         if (GET_U_1(p) & 0x10)
1226                             ND_PRINT("<DEREGISTERING> ");
1227                         if (GET_U_1(p) & 0x08)
1228                             ND_PRINT("<CONFLICT> ");
1229                         if (GET_U_1(p) & 0x04)
1230                             ND_PRINT("<ACTIVE> ");
1231                         if (GET_U_1(p) & 0x02)
1232                             ND_PRINT("<PERMANENT> ");
1233                         ND_PRINT("\n");
1234                         p += 2;
1235                         numnames--;
1236                     }
1237                 } else {
1238                     if (p >= maxbuf)
1239                         goto out;
1240                     smb_data_print(ndo, p, min(rdlen, length - ND_BYTES_BETWEEN(p, data)));
1241                     p += rdlen;
1242                 }
1243             }
1244         }
1245     }
1246
1247     if (p < maxbuf)
1248         smb_fdata(ndo, p, "AdditionalData:\n", maxbuf, 0);
1249
1250 out:
1251     return;
1252 trunc:
1253     nd_print_trunc(ndo);
1254 }
1255
1256 /*
1257  * Print an SMB-over-TCP packet received across tcp on port 445
1258  */
1259 void
1260 smb_tcp_print(netdissect_options *ndo,
1261               const u_char * data, u_int length)
1262 {
1263     u_int caplen;
1264     u_int smb_len;
1265     const u_char *maxbuf;
1266
1267     ndo->ndo_protocol = "smb_tcp";
1268     if (length < 4)
1269         goto trunc;
1270     if (ndo->ndo_snapend < data)
1271         goto trunc;
1272     caplen = ND_BYTES_AVAILABLE_AFTER(data);
1273     if (caplen < 4)
1274         goto trunc;
1275     maxbuf = data + caplen;
1276     smb_len = GET_BE_U_3(data + 1);
1277     length -= 4;
1278     caplen -= 4;
1279
1280     startbuf = data;
1281     data += 4;
1282
1283     if (smb_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1284         if (smb_len > caplen) {
1285             if (smb_len > length)
1286                 ND_PRINT(" WARNING: Packet is continued in later TCP segments\n");
1287             else
1288                 ND_PRINT(" WARNING: Short packet. Try increasing the snap length by %u\n",
1289                     smb_len - caplen);
1290         } else
1291             ND_PRINT(" ");
1292         print_smb(ndo, data, maxbuf > data + smb_len ? data + smb_len : maxbuf);
1293     } else
1294         ND_PRINT(" SMB-over-TCP packet:(raw data or continuation?)\n");
1295     return;
1296 trunc:
1297     nd_print_trunc(ndo);
1298 }
1299
1300 /*
1301  * print a NBT packet received across udp on port 138
1302  */
1303 void
1304 nbt_udp138_print(netdissect_options *ndo,
1305                  const u_char *data, u_int length)
1306 {
1307     const u_char *maxbuf = data + length;
1308
1309     ndo->ndo_protocol = "nbt_udp138";
1310     if (maxbuf > ndo->ndo_snapend)
1311         maxbuf = ndo->ndo_snapend;
1312     if (maxbuf <= data)
1313         return;
1314     startbuf = data;
1315
1316     if (ndo->ndo_vflag < 2) {
1317         ND_PRINT("NBT UDP PACKET(138)");
1318         return;
1319     }
1320
1321     data = smb_fdata(ndo, data,
1322         "\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#",
1323         maxbuf, 0);
1324
1325     if (data != NULL) {
1326         /* If there isn't enough data for "\377SMB", don't check for it. */
1327         if ((data + 3) >= maxbuf)
1328             goto out;
1329
1330         if (memcmp(data, "\377SMB",4) == 0)
1331             print_smb(ndo, data, maxbuf);
1332     }
1333 out:
1334     return;
1335 }
1336
1337
1338 /*
1339    print netbeui frames
1340 */
1341 static struct nbf_strings {
1342         const char      *name;
1343         const char      *nonverbose;
1344         const char      *verbose;
1345 } nbf_strings[0x20] = {
1346         { "Add Group Name Query", ", [P23]Name to add=[n2]#",
1347           "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1348         { "Add Name Query", ", [P23]Name to add=[n2]#",
1349           "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1350         { "Name In Conflict", NULL, NULL },
1351         { "Status Query", NULL, NULL },
1352         { NULL, NULL, NULL },   /* not used */
1353         { NULL, NULL, NULL },   /* not used */
1354         { NULL, NULL, NULL },   /* not used */
1355         { "Terminate Trace", NULL, NULL },
1356         { "Datagram", NULL,
1357           "[P7]Destination=[n2]\nSource=[n2]\n" },
1358         { "Broadcast Datagram", NULL,
1359           "[P7]Destination=[n2]\nSource=[n2]\n" },
1360         { "Name Query", ", [P7]Name=[n2]#",
1361           "[P1]SessionNumber=[B]\nNameType=[B][P2]\nResponseCorrelator=[w]\nName=[n2]\nName of sender=[n2]\n" },
1362         { NULL, NULL, NULL },   /* not used */
1363         { NULL, NULL, NULL },   /* not used */
1364         { "Add Name Response", ", [P1]GroupName=[w] [P4]Destination=[n2] Source=[n2]#",
1365           "AddNameInProcess=[B]\nGroupName=[w]\nTransmitCorrelator=[w][P2]\nDestination=[n2]\nSource=[n2]\n" },
1366         { "Name Recognized", NULL,
1367           "[P1]Data2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nDestination=[n2]\nSource=[n2]\n" },
1368         { "Status Response", NULL, NULL },
1369         { NULL, NULL, NULL },   /* not used */
1370         { NULL, NULL, NULL },   /* not used */
1371         { NULL, NULL, NULL },   /* not used */
1372         { "Terminate Trace", NULL, NULL },
1373         { "Data Ack", NULL,
1374           "[P3]TransmitCorrelator=[w][P2]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1375         { "Data First/Middle", NULL,
1376           "Flags=[{RECEIVE_CONTINUE|NO_ACK||PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1377         { "Data Only/Last", NULL,
1378           "Flags=[{|NO_ACK|PIGGYBACK_ACK_ALLOWED|PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1379         { "Session Confirm", NULL,
1380           "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1381         { "Session End", NULL,
1382           "[P1]Data2=[w][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1383         { "Session Initialize", NULL,
1384           "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1385         { "No Receive", NULL,
1386           "Flags=[{|SEND_NO_ACK}]\nDataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1387         { "Receive Outstanding", NULL,
1388           "[P1]DataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1389         { "Receive Continue", NULL,
1390           "[P2]TransmitCorrelator=[w]\n[P2]RemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1391         { NULL, NULL, NULL },   /* not used */
1392         { NULL, NULL, NULL },   /* not used */
1393         { "Session Alive", NULL, NULL }
1394 };
1395
1396 void
1397 netbeui_print(netdissect_options *ndo,
1398               u_short control, const u_char *data, u_int length)
1399 {
1400     const u_char *maxbuf = data + length;
1401     u_int len;
1402     u_int command;
1403     const u_char *data2;
1404     int is_truncated = 0;
1405
1406     ndo->ndo_protocol = "netbeui";
1407     if (maxbuf > ndo->ndo_snapend)
1408         maxbuf = ndo->ndo_snapend;
1409     ND_TCHECK_1(data + 4);
1410     len = GET_LE_U_2(data);
1411     command = GET_U_1(data + 4);
1412     data2 = data + len;
1413     if (data2 >= maxbuf) {
1414         data2 = maxbuf;
1415         is_truncated = 1;
1416     }
1417
1418     startbuf = data;
1419
1420     if (ndo->ndo_vflag < 2) {
1421         ND_PRINT("NBF Packet: ");
1422         data = smb_fdata(ndo, data, "[P5]#", maxbuf, 0);
1423     } else {
1424         ND_PRINT("\n>>> NBF Packet\nType=0x%X ", control);
1425         data = smb_fdata(ndo, data, "Length=[u] Signature=[w] Command=[B]\n#", maxbuf, 0);
1426     }
1427     if (data == NULL)
1428         goto out;
1429
1430     if (command > 0x1f || nbf_strings[command].name == NULL) {
1431         if (ndo->ndo_vflag < 2)
1432             data = smb_fdata(ndo, data, "Unknown NBF Command#", data2, 0);
1433         else
1434             data = smb_fdata(ndo, data, "Unknown NBF Command\n", data2, 0);
1435     } else {
1436         if (ndo->ndo_vflag < 2) {
1437             ND_PRINT("%s", nbf_strings[command].name);
1438             if (nbf_strings[command].nonverbose != NULL)
1439                 data = smb_fdata(ndo, data, nbf_strings[command].nonverbose, data2, 0);
1440         } else {
1441             ND_PRINT("%s:\n", nbf_strings[command].name);
1442             if (nbf_strings[command].verbose != NULL)
1443                 data = smb_fdata(ndo, data, nbf_strings[command].verbose, data2, 0);
1444             else
1445                 ND_PRINT("\n");
1446         }
1447     }
1448
1449     if (ndo->ndo_vflag < 2)
1450         return;
1451
1452     if (data == NULL)
1453         goto out;
1454
1455     if (is_truncated) {
1456         /* data2 was past the end of the buffer */
1457         goto out;
1458     }
1459
1460     /* If this isn't a command that would contain an SMB message, quit. */
1461     if (command != 0x08 && command != 0x09 && command != 0x15 &&
1462         command != 0x16)
1463         goto out;
1464
1465     /* If there isn't enough data for "\377SMB", don't look for it. */
1466     if ((data2 + 3) >= maxbuf)
1467         goto out;
1468
1469     if (memcmp(data2, "\377SMB",4) == 0)
1470         print_smb(ndo, data2, maxbuf);
1471     else {
1472         u_int i;
1473         for (i = 0; i < 128; i++) {
1474             if ((data2 + i + 3) >= maxbuf)
1475                 break;
1476             if (memcmp(data2 + i, "\377SMB", 4) == 0) {
1477                 ND_PRINT("found SMB packet at %u\n", i);
1478                 print_smb(ndo, data2 + i, maxbuf);
1479                 break;
1480             }
1481         }
1482     }
1483
1484 out:
1485     return;
1486 trunc:
1487     nd_print_trunc(ndo);
1488 }
1489
1490
1491 /*
1492  * print IPX-Netbios frames
1493  */
1494 void
1495 ipx_netbios_print(netdissect_options *ndo,
1496                   const u_char *data, u_int length)
1497 {
1498     /*
1499      * this is a hack till I work out how to parse the rest of the
1500      * NetBIOS-over-IPX stuff
1501      */
1502     u_int i;
1503     const u_char *maxbuf;
1504
1505     ndo->ndo_protocol = "ipx_netbios";
1506     maxbuf = data + length;
1507     /* Don't go past the end of the captured data in the packet. */
1508     if (maxbuf > ndo->ndo_snapend)
1509         maxbuf = ndo->ndo_snapend;
1510     startbuf = data;
1511     for (i = 0; i < 128; i++) {
1512         if ((data + i + 4) > maxbuf)
1513             break;
1514         if (memcmp(data + i, "\377SMB", 4) == 0) {
1515             smb_fdata(ndo, data, "\n>>> IPX transport ", data + i, 0);
1516             print_smb(ndo, data + i, maxbuf);
1517             break;
1518         }
1519     }
1520     if (i == 128)
1521         smb_fdata(ndo, data, "\n>>> Unknown IPX ", maxbuf, 0);
1522 }