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

   1 /*
   2  * Copyright (C) Andrew Tridgell 1995-1999
   3  *
   4  * This software may be distributed either under the terms of the
   5  * BSD-style license that accompanies tcpdump or the GNU GPL version 2
   6  * or later
   7  */
   8
   9 /* \summary: SMB/CIFS printer */
  10
  11 #ifdef HAVE_CONFIG_H
  12 #include "config.h"
  13 #endif
  14
  15 #include <netdissect-stdinc.h>
  16
  17 #include <string.h>
  18
  19 #include "netdissect.h"
  20 #include "extract.h"
  21 #include "smb.h"
  22
  23 static const char tstr[] = "[|SMB]";
  24
  25 static int request = 0;
  26 static int unicodestr = 0;
  27
  28 const u_char *startbuf = NULL;
  29
  30 struct smbdescript {
  31     const char *req_f1;
  32     const char *req_f2;
  33     const char *rep_f1;
  34     const char *rep_f2;
  35     void (*fn)(netdissect_options *, const u_char *, const u_char *, const u_char *, const u_char *);
  36 };
  37
  38 struct smbdescriptint {
  39     const char *req_f1;
  40     const char *req_f2;
  41     const char *rep_f1;
  42     const char *rep_f2;
  43     void (*fn)(netdissect_options *, const u_char *, const u_char *, int, int);
  44 };
  45
  46 struct smbfns
  47 {
  48     int id;
  49     const char *name;
  50     int flags;
  51     struct smbdescript descript;
  52 };
  53
  54 struct smbfnsint
  55 {
  56     int id;
  57     const char *name;
  58     int flags;
  59     struct smbdescriptint descript;
  60 };
  61
  62 #define DEFDESCRIPT     { NULL, NULL, NULL, NULL, NULL }
  63
  64 #define FLG_CHAIN       (1 << 0)
  65
  66 static const struct smbfns *
  67 smbfind(int id, const struct smbfns *list)
  68 {
  69     int sindex;
  70
  71     for (sindex = 0; list[sindex].name; sindex++)
  72         if (list[sindex].id == id)
  73             return(&list[sindex]);
  74
  75     return(&list[0]);
  76 }
  77
  78 static const struct smbfnsint *
  79 smbfindint(int id, const struct smbfnsint *list)
  80 {
  81     int sindex;
  82
  83     for (sindex = 0; list[sindex].name; sindex++)
  84         if (list[sindex].id == id)
  85             return(&list[sindex]);
  86
  87     return(&list[0]);
  88 }
  89
  90 static void
  91 trans2_findfirst(netdissect_options *ndo,
  92                  const u_char *param, const u_char *data, int pcnt, int dcnt)
  93 {
  94     const char *fmt;
  95
  96     if (request)
  97         fmt = "Attribute=[A]\nSearchCount=[d]\nFlags=[w]\nLevel=[dP4]\nFile=[S]\n";
  98     else
  99         fmt = "Handle=[w]\nCount=[d]\nEOS=[w]\nEoffset=[d]\nLastNameOfs=[w]\n";
 100
 101     smb_fdata(ndo, param, fmt, param + pcnt, unicodestr);
 102     if (dcnt) {
 103         ND_PRINT((ndo, "data:\n"));
 104         smb_print_data(ndo, data, dcnt);
 105     }
 106 }
 107
 108 static void
 109 trans2_qfsinfo(netdissect_options *ndo,
 110                const u_char *param, const u_char *data, int pcnt, int dcnt)
 111 {
 112     static int level = 0;
 113     const char *fmt="";
 114
 115     if (request) {
 116         ND_TCHECK2(*param, 2);
 117         level = EXTRACT_LE_16BITS(param);
 118         fmt = "InfoLevel=[d]\n";
 119         smb_fdata(ndo, param, fmt, param + pcnt, unicodestr);
 120     } else {
 121         switch (level) {
 122         case 1:
 123             fmt = "idFileSystem=[W]\nSectorUnit=[D]\nUnit=[D]\nAvail=[D]\nSectorSize=[d]\n";
 124             break;
 125         case 2:
 126             fmt = "CreationTime=[T2]VolNameLength=[lb]\nVolumeLabel=[c]\n";
 127             break;
 128         case 0x105:
 129             fmt = "Capabilities=[W]\nMaxFileLen=[D]\nVolNameLen=[lD]\nVolume=[C]\n";
 130             break;
 131         default:
 132             fmt = "UnknownLevel\n";
 133             break;
 134         }
 135         smb_fdata(ndo, data, fmt, data + dcnt, unicodestr);
 136     }
 137     if (dcnt) {
 138         ND_PRINT((ndo, "data:\n"));
 139         smb_print_data(ndo, data, dcnt);
 140     }
 141     return;
 142 trunc:
 143     ND_PRINT((ndo, "%s", tstr));
 144 }
 145
 146 static const struct smbfnsint trans2_fns[] = {
 147     { 0, "TRANSACT2_OPEN", 0,
 148         { "Flags2=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]\nOFun=[w]\nSize=[D]\nRes=([w, w, w, w, w])\nPath=[S]",
 149           NULL,
 150           "Handle=[d]\nAttrib=[A]\nTime=[T2]\nSize=[D]\nAccess=[w]\nType=[w]\nState=[w]\nAction=[w]\nInode=[W]\nOffErr=[d]\n|EALength=[d]\n",
 151           NULL, NULL }},
 152     { 1, "TRANSACT2_FINDFIRST", 0,
 153         { NULL, NULL, NULL, NULL, trans2_findfirst }},
 154     { 2, "TRANSACT2_FINDNEXT", 0, DEFDESCRIPT },
 155     { 3, "TRANSACT2_QFSINFO", 0,
 156         { NULL, NULL, NULL, NULL, trans2_qfsinfo }},
 157     { 4, "TRANSACT2_SETFSINFO", 0, DEFDESCRIPT },
 158     { 5, "TRANSACT2_QPATHINFO", 0, DEFDESCRIPT },
 159     { 6, "TRANSACT2_SETPATHINFO", 0, DEFDESCRIPT },
 160     { 7, "TRANSACT2_QFILEINFO", 0, DEFDESCRIPT },
 161     { 8, "TRANSACT2_SETFILEINFO", 0, DEFDESCRIPT },
 162     { 9, "TRANSACT2_FSCTL", 0, DEFDESCRIPT },
 163     { 10, "TRANSACT2_IOCTL", 0, DEFDESCRIPT },
 164     { 11, "TRANSACT2_FINDNOTIFYFIRST", 0, DEFDESCRIPT },
 165     { 12, "TRANSACT2_FINDNOTIFYNEXT", 0, DEFDESCRIPT },
 166     { 13, "TRANSACT2_MKDIR", 0, DEFDESCRIPT },
 167     { -1, NULL, 0, DEFDESCRIPT }
 168 };
 169
 170
 171 static void
 172 print_trans2(netdissect_options *ndo,
 173              const u_char *words, const u_char *dat, const u_char *buf, const u_char *maxbuf)
 174 {
 175     u_int bcc;
 176     static const struct smbfnsint *fn = &trans2_fns[0];
 177     const u_char *data, *param;
 178     const u_char *w = words + 1;
 179     const char *f1 = NULL, *f2 = NULL;
 180     int pcnt, dcnt;
 181
 182     ND_TCHECK(words[0]);
 183     if (request) {
 184         ND_TCHECK2(w[14 * 2], 2);
 185         pcnt = EXTRACT_LE_16BITS(w + 9 * 2);
 186         param = buf + EXTRACT_LE_16BITS(w + 10 * 2);
 187         dcnt = EXTRACT_LE_16BITS(w + 11 * 2);
 188         data = buf + EXTRACT_LE_16BITS(w + 12 * 2);
 189         fn = smbfindint(EXTRACT_LE_16BITS(w + 14 * 2), trans2_fns);
 190     } else {
 191         if (words[0] == 0) {
 192             ND_PRINT((ndo, "%s\n", fn->name));
 193             ND_PRINT((ndo, "Trans2Interim\n"));
 194             return;
 195         }
 196         ND_TCHECK2(w[7 * 2], 2);
 197         pcnt = EXTRACT_LE_16BITS(w + 3 * 2);
 198         param = buf + EXTRACT_LE_16BITS(w + 4 * 2);
 199         dcnt = EXTRACT_LE_16BITS(w + 6 * 2);
 200         data = buf + EXTRACT_LE_16BITS(w + 7 * 2);
 201     }
 202
 203     ND_PRINT((ndo, "%s param_length=%d data_length=%d\n", fn->name, pcnt, dcnt));
 204
 205     if (request) {
 206         if (words[0] == 8) {
 207             smb_fdata(ndo, words + 1,
 208                 "Trans2Secondary\nTotParam=[d]\nTotData=[d]\nParamCnt=[d]\nParamOff=[d]\nParamDisp=[d]\nDataCnt=[d]\nDataOff=[d]\nDataDisp=[d]\nHandle=[d]\n",
 209                 maxbuf, unicodestr);
 210             return;
 211         } else {
 212             smb_fdata(ndo, words + 1,
 213                 "TotParam=[d]\nTotData=[d]\nMaxParam=[d]\nMaxData=[d]\nMaxSetup=[b][P1]\nFlags=[w]\nTimeOut=[D]\nRes1=[w]\nParamCnt=[d]\nParamOff=[d]\nDataCnt=[d]\nDataOff=[d]\nSetupCnt=[b][P1]\n",
 214                 words + 1 + 14 * 2, unicodestr);
 215         }
 216         f1 = fn->descript.req_f1;
 217         f2 = fn->descript.req_f2;
 218     } else {
 219         smb_fdata(ndo, words + 1,
 220             "TotParam=[d]\nTotData=[d]\nRes1=[w]\nParamCnt=[d]\nParamOff=[d]\nParamDisp[d]\nDataCnt=[d]\nDataOff=[d]\nDataDisp=[d]\nSetupCnt=[b][P1]\n",
 221             words + 1 + 10 * 2, unicodestr);
 222         f1 = fn->descript.rep_f1;
 223         f2 = fn->descript.rep_f2;
 224     }
 225
 226     ND_TCHECK2(*dat, 2);
 227     bcc = EXTRACT_LE_16BITS(dat);
 228     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
 229     if (fn->descript.fn)
 230         (*fn->descript.fn)(ndo, param, data, pcnt, dcnt);
 231     else {
 232         smb_fdata(ndo, param, f1 ? f1 : "Parameters=\n", param + pcnt, unicodestr);
 233         smb_fdata(ndo, data, f2 ? f2 : "Data=\n", data + dcnt, unicodestr);
 234     }
 235     return;
 236 trunc:
 237     ND_PRINT((ndo, "%s", tstr));
 238 }
 239
 240 static void
 241 print_browse(netdissect_options *ndo,
 242              const u_char *param, int paramlen, const u_char *data, int datalen)
 243 {
 244     const u_char *maxbuf = data + datalen;
 245     int command;
 246
 247     ND_TCHECK(data[0]);
 248     command = data[0];
 249
 250     smb_fdata(ndo, param, "BROWSE PACKET\n|Param ", param+paramlen, unicodestr);
 251
 252     switch (command) {
 253     case 0xF:
 254         data = smb_fdata(ndo, data,
 255             "BROWSE PACKET:\nType=[B] (LocalMasterAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[d]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nElectionVersion=[w]\nBrowserConstant=[w]\n",
 256             maxbuf, unicodestr);
 257         break;
 258
 259     case 0x1:
 260         data = smb_fdata(ndo, data,
 261             "BROWSE PACKET:\nType=[B] (HostAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[d]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nElectionVersion=[w]\nBrowserConstant=[w]\n",
 262             maxbuf, unicodestr);
 263         break;
 264
 265     case 0x2:
 266         data = smb_fdata(ndo, data,
 267             "BROWSE PACKET:\nType=[B] (AnnouncementRequest)\nFlags=[B]\nReplySystemName=[S]\n",
 268             maxbuf, unicodestr);
 269         break;
 270
 271     case 0xc:
 272         data = smb_fdata(ndo, data,
 273             "BROWSE PACKET:\nType=[B] (WorkgroupAnnouncement)\nUpdateCount=[w]\nRes1=[B]\nAnnounceInterval=[d]\nName=[n2]\nMajorVersion=[B]\nMinorVersion=[B]\nServerType=[W]\nCommentPointer=[W]\nServerName=[S]\n",
 274             maxbuf, unicodestr);
 275         break;
 276
 277     case 0x8:
 278         data = smb_fdata(ndo, data,
 279             "BROWSE PACKET:\nType=[B] (ElectionFrame)\nElectionVersion=[B]\nOSSummary=[W]\nUptime=[(W, W)]\nServerName=[S]\n",
 280             maxbuf, unicodestr);
 281         break;
 282
 283     case 0xb:
 284         data = smb_fdata(ndo, data,
 285             "BROWSE PACKET:\nType=[B] (BecomeBackupBrowser)\nName=[S]\n",
 286             maxbuf, unicodestr);
 287         break;
 288
 289     case 0x9:
 290         data = smb_fdata(ndo, data,
 291             "BROWSE PACKET:\nType=[B] (GetBackupList)\nListCount?=[B]\nToken=[W]\n",
 292             maxbuf, unicodestr);
 293         break;
 294
 295     case 0xa:
 296         data = smb_fdata(ndo, data,
 297             "BROWSE PACKET:\nType=[B] (BackupListResponse)\nServerCount?=[B]\nToken=[W]\n*Name=[S]\n",
 298             maxbuf, unicodestr);
 299         break;
 300
 301     case 0xd:
 302         data = smb_fdata(ndo, data,
 303             "BROWSE PACKET:\nType=[B] (MasterAnnouncement)\nMasterName=[S]\n",
 304             maxbuf, unicodestr);
 305         break;
 306
 307     case 0xe:
 308         data = smb_fdata(ndo, data,
 309             "BROWSE PACKET:\nType=[B] (ResetBrowser)\nOptions=[B]\n", maxbuf, unicodestr);
 310         break;
 311
 312     default:
 313         data = smb_fdata(ndo, data, "Unknown Browser Frame ", maxbuf, unicodestr);
 314         break;
 315     }
 316     return;
 317 trunc:
 318     ND_PRINT((ndo, "%s", tstr));
 319 }
 320
 321
 322 static void
 323 print_ipc(netdissect_options *ndo,
 324           const u_char *param, int paramlen, const u_char *data, int datalen)
 325 {
 326     if (paramlen)
 327         smb_fdata(ndo, param, "Command=[w]\nStr1=[S]\nStr2=[S]\n", param + paramlen,
 328             unicodestr);
 329     if (datalen)
 330         smb_fdata(ndo, data, "IPC ", data + datalen, unicodestr);
 331 }
 332
 333
 334 static void
 335 print_trans(netdissect_options *ndo,
 336             const u_char *words, const u_char *data1, const u_char *buf, const u_char *maxbuf)
 337 {
 338     u_int bcc;
 339     const char *f1, *f2, *f3, *f4;
 340     const u_char *data, *param;
 341     const u_char *w = words + 1;
 342     int datalen, paramlen;
 343
 344     if (request) {
 345         ND_TCHECK2(w[12 * 2], 2);
 346         paramlen = EXTRACT_LE_16BITS(w + 9 * 2);
 347         param = buf + EXTRACT_LE_16BITS(w + 10 * 2);
 348         datalen = EXTRACT_LE_16BITS(w + 11 * 2);
 349         data = buf + EXTRACT_LE_16BITS(w + 12 * 2);
 350         f1 = "TotParamCnt=[d] \nTotDataCnt=[d] \nMaxParmCnt=[d] \nMaxDataCnt=[d]\nMaxSCnt=[d] \nTransFlags=[w] \nRes1=[w] \nRes2=[w] \nRes3=[w]\nParamCnt=[d] \nParamOff=[d] \nDataCnt=[d] \nDataOff=[d] \nSUCnt=[d]\n";
 351         f2 = "|Name=[S]\n";
 352         f3 = "|Param ";
 353         f4 = "|Data ";
 354     } else {
 355         ND_TCHECK2(w[7 * 2], 2);
 356         paramlen = EXTRACT_LE_16BITS(w + 3 * 2);
 357         param = buf + EXTRACT_LE_16BITS(w + 4 * 2);
 358         datalen = EXTRACT_LE_16BITS(w + 6 * 2);
 359         data = buf + EXTRACT_LE_16BITS(w + 7 * 2);
 360         f1 = "TotParamCnt=[d] \nTotDataCnt=[d] \nRes1=[d]\nParamCnt=[d] \nParamOff=[d] \nRes2=[d] \nDataCnt=[d] \nDataOff=[d] \nRes3=[d]\nLsetup=[d]\n";
 361         f2 = "|Unknown ";
 362         f3 = "|Param ";
 363         f4 = "|Data ";
 364     }
 365
 366     smb_fdata(ndo, words + 1, f1, min(words + 1 + 2 * words[0], maxbuf),
 367         unicodestr);
 368
 369     ND_TCHECK2(*data1, 2);
 370     bcc = EXTRACT_LE_16BITS(data1);
 371     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
 372     if (bcc > 0) {
 373         smb_fdata(ndo, data1 + 2, f2, maxbuf - (paramlen + datalen), unicodestr);
 374
 375         if (strcmp((const char *)(data1 + 2), "\\MAILSLOT\\BROWSE") == 0) {
 376             print_browse(ndo, param, paramlen, data, datalen);
 377             return;
 378         }
 379
 380         if (strcmp((const char *)(data1 + 2), "\\PIPE\\LANMAN") == 0) {
 381             print_ipc(ndo, param, paramlen, data, datalen);
 382             return;
 383         }
 384
 385         if (paramlen)
 386             smb_fdata(ndo, param, f3, min(param + paramlen, maxbuf), unicodestr);
 387         if (datalen)
 388             smb_fdata(ndo, data, f4, min(data + datalen, maxbuf), unicodestr);
 389     }
 390     return;
 391 trunc:
 392     ND_PRINT((ndo, "%s", tstr));
 393 }
 394
 395
 396 static void
 397 print_negprot(netdissect_options *ndo,
 398               const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 399 {
 400     u_int wct, bcc;
 401     const char *f1 = NULL, *f2 = NULL;
 402
 403     ND_TCHECK(words[0]);
 404     wct = words[0];
 405     if (request)
 406         f2 = "*|Dialect=[Y]\n";
 407     else {
 408         if (wct == 1)
 409             f1 = "Core Protocol\nDialectIndex=[d]";
 410         else if (wct == 17)
 411             f1 = "NT1 Protocol\nDialectIndex=[d]\nSecMode=[B]\nMaxMux=[d]\nNumVcs=[d]\nMaxBuffer=[D]\nRawSize=[D]\nSessionKey=[W]\nCapabilities=[W]\nServerTime=[T3]TimeZone=[d]\nCryptKey=";
 412         else if (wct == 13)
 413             f1 = "Coreplus/Lanman1/Lanman2 Protocol\nDialectIndex=[d]\nSecMode=[w]\nMaxXMit=[d]\nMaxMux=[d]\nMaxVcs=[d]\nBlkMode=[w]\nSessionKey=[W]\nServerTime=[T1]TimeZone=[d]\nRes=[W]\nCryptKey=";
 414     }
 415
 416     if (f1)
 417         smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
 418             unicodestr);
 419     else
 420         smb_print_data(ndo, words + 1, min(wct * 2, PTR_DIFF(maxbuf, words + 1)));
 421
 422     ND_TCHECK2(*data, 2);
 423     bcc = EXTRACT_LE_16BITS(data);
 424     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
 425     if (bcc > 0) {
 426         if (f2)
 427             smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_16BITS(data),
 428                 maxbuf), unicodestr);
 429         else
 430             smb_print_data(ndo, data + 2, min(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
 431     }
 432     return;
 433 trunc:
 434     ND_PRINT((ndo, "%s", tstr));
 435 }
 436
 437 static void
 438 print_sesssetup(netdissect_options *ndo,
 439                 const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 440 {
 441     u_int wct, bcc;
 442     const char *f1 = NULL, *f2 = NULL;
 443
 444     ND_TCHECK(words[0]);
 445     wct = words[0];
 446     if (request) {
 447         if (wct == 10)
 448             f1 = "Com2=[w]\nOff2=[d]\nBufSize=[d]\nMpxMax=[d]\nVcNum=[d]\nSessionKey=[W]\nPassLen=[d]\nCryptLen=[d]\nCryptOff=[d]\nPass&Name=\n";
 449         else
 450             f1 = "Com2=[B]\nRes1=[B]\nOff2=[d]\nMaxBuffer=[d]\nMaxMpx=[d]\nVcNumber=[d]\nSessionKey=[W]\nCaseInsensitivePasswordLength=[d]\nCaseSensitivePasswordLength=[d]\nRes=[W]\nCapabilities=[W]\nPass1&Pass2&Account&Domain&OS&LanMan=\n";
 451     } else {
 452         if (wct == 3) {
 453             f1 = "Com2=[w]\nOff2=[d]\nAction=[w]\n";
 454         } else if (wct == 13) {
 455             f1 = "Com2=[B]\nRes=[B]\nOff2=[d]\nAction=[w]\n";
 456             f2 = "NativeOS=[S]\nNativeLanMan=[S]\nPrimaryDomain=[S]\n";
 457         }
 458     }
 459
 460     if (f1)
 461         smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
 462             unicodestr);
 463     else
 464         smb_print_data(ndo, words + 1, min(wct * 2, PTR_DIFF(maxbuf, words + 1)));
 465
 466     ND_TCHECK2(*data, 2);
 467     bcc = EXTRACT_LE_16BITS(data);
 468     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
 469     if (bcc > 0) {
 470         if (f2)
 471             smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_16BITS(data),
 472                 maxbuf), unicodestr);
 473         else
 474             smb_print_data(ndo, data + 2, min(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
 475     }
 476     return;
 477 trunc:
 478     ND_PRINT((ndo, "%s", tstr));
 479 }
 480
 481 static void
 482 print_lockingandx(netdissect_options *ndo,
 483                   const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 484 {
 485     u_int wct, bcc;
 486     const u_char *maxwords;
 487     const char *f1 = NULL, *f2 = NULL;
 488
 489     ND_TCHECK(words[0]);
 490     wct = words[0];
 491     if (request) {
 492         f1 = "Com2=[w]\nOff2=[d]\nHandle=[d]\nLockType=[w]\nTimeOut=[D]\nUnlockCount=[d]\nLockCount=[d]\n";
 493         ND_TCHECK(words[7]);
 494         if (words[7] & 0x10)
 495             f2 = "*Process=[d]\n[P2]Offset=[M]\nLength=[M]\n";
 496         else
 497             f2 = "*Process=[d]\nOffset=[D]\nLength=[D]\n";
 498     } else {
 499         f1 = "Com2=[w]\nOff2=[d]\n";
 500     }
 501
 502     maxwords = min(words + 1 + wct * 2, maxbuf);
 503     if (wct)
 504         smb_fdata(ndo, words + 1, f1, maxwords, unicodestr);
 505
 506     ND_TCHECK2(*data, 2);
 507     bcc = EXTRACT_LE_16BITS(data);
 508     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
 509     if (bcc > 0) {
 510         if (f2)
 511             smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_16BITS(data),
 512                 maxbuf), unicodestr);
 513         else
 514             smb_print_data(ndo, data + 2, min(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
 515     }
 516     return;
 517 trunc:
 518     ND_PRINT((ndo, "%s", tstr));
 519 }
 520
 521
 522 static const struct smbfns smb_fns[] = {
 523     { -1, "SMBunknown", 0, DEFDESCRIPT },
 524
 525     { SMBtcon, "SMBtcon", 0,
 526         { NULL, "Path=[Z]\nPassword=[Z]\nDevice=[Z]\n",
 527           "MaxXmit=[d]\nTreeId=[d]\n", NULL,
 528           NULL } },
 529
 530     { SMBtdis, "SMBtdis", 0, DEFDESCRIPT },
 531     { SMBexit,  "SMBexit", 0, DEFDESCRIPT },
 532     { SMBioctl, "SMBioctl", 0, DEFDESCRIPT },
 533
 534     { SMBecho, "SMBecho", 0,
 535         { "ReverbCount=[d]\n", NULL,
 536           "SequenceNum=[d]\n", NULL,
 537           NULL } },
 538
 539     { SMBulogoffX, "SMBulogoffX", FLG_CHAIN, DEFDESCRIPT },
 540
 541     { SMBgetatr, "SMBgetatr", 0,
 542         { NULL, "Path=[Z]\n",
 543           "Attribute=[A]\nTime=[T2]Size=[D]\nRes=([w,w,w,w,w])\n", NULL,
 544           NULL } },
 545
 546     { SMBsetatr, "SMBsetatr", 0,
 547         { "Attribute=[A]\nTime=[T2]Res=([w,w,w,w,w])\n", "Path=[Z]\n",
 548           NULL, NULL, NULL } },
 549
 550     { SMBchkpth, "SMBchkpth", 0,
 551        { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 552
 553     { SMBsearch, "SMBsearch", 0,
 554         { "Count=[d]\nAttrib=[A]\n",
 555           "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\nRes2=[W]\n",
 556           "Count=[d]\n",
 557           "BlkType=[B]\nBlkLen=[d]\n*\nRes1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\nRes2=[W]\nAttrib=[a]\nTime=[T1]Size=[D]\nName=[s13]\n",
 558           NULL } },
 559
 560     { SMBopen, "SMBopen", 0,
 561         { "Mode=[w]\nAttribute=[A]\n", "Path=[Z]\n",
 562           "Handle=[d]\nOAttrib=[A]\nTime=[T2]Size=[D]\nAccess=[w]\n",
 563           NULL, NULL } },
 564
 565     { SMBcreate, "SMBcreate", 0,
 566         { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[d]\n", NULL, NULL } },
 567
 568     { SMBmknew, "SMBmknew", 0,
 569         { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[d]\n", NULL, NULL } },
 570
 571     { SMBunlink, "SMBunlink", 0,
 572         { "Attrib=[A]\n", "Path=[Z]\n", NULL, NULL, NULL } },
 573
 574     { SMBread, "SMBread", 0,
 575         { "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
 576           "Count=[d]\nRes=([w,w,w,w])\n", NULL, NULL } },
 577
 578     { SMBwrite, "SMBwrite", 0,
 579         { "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
 580           "Count=[d]\n", NULL, NULL } },
 581
 582     { SMBclose, "SMBclose", 0,
 583         { "Handle=[d]\nTime=[T2]", NULL, NULL, NULL, NULL } },
 584
 585     { SMBmkdir, "SMBmkdir", 0,
 586         { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 587
 588     { SMBrmdir, "SMBrmdir", 0,
 589         { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 590
 591     { SMBdskattr, "SMBdskattr", 0,
 592         { NULL, NULL,
 593           "TotalUnits=[d]\nBlocksPerUnit=[d]\nBlockSize=[d]\nFreeUnits=[d]\nMedia=[w]\n",
 594           NULL, NULL } },
 595
 596     { SMBmv, "SMBmv", 0,
 597         { "Attrib=[A]\n", "OldPath=[Z]\nNewPath=[Z]\n", NULL, NULL, NULL } },
 598
 599     /*
 600      * this is a Pathworks specific call, allowing the
 601      * changing of the root path
 602      */
 603     { pSETDIR, "SMBsetdir", 0, { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 604
 605     { SMBlseek, "SMBlseek", 0,
 606         { "Handle=[d]\nMode=[w]\nOffset=[D]\n", "Offset=[D]\n", NULL, NULL, NULL } },
 607
 608     { SMBflush, "SMBflush", 0, { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
 609
 610     { SMBsplopen, "SMBsplopen", 0,
 611         { "SetupLen=[d]\nMode=[w]\n", "Ident=[Z]\n", "Handle=[d]\n",
 612           NULL, NULL } },
 613
 614     { SMBsplclose, "SMBsplclose", 0,
 615         { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
 616
 617     { SMBsplretq, "SMBsplretq", 0,
 618         { "MaxCount=[d]\nStartIndex=[d]\n", NULL,
 619           "Count=[d]\nIndex=[d]\n",
 620           "*Time=[T2]Status=[B]\nJobID=[d]\nSize=[D]\nRes=[B]Name=[s16]\n",
 621           NULL } },
 622
 623     { SMBsplwr, "SMBsplwr", 0,
 624         { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
 625
 626     { SMBlock, "SMBlock", 0,
 627         { "Handle=[d]\nCount=[D]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
 628
 629     { SMBunlock, "SMBunlock", 0,
 630         { "Handle=[d]\nCount=[D]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
 631
 632     /* CORE+ PROTOCOL FOLLOWS */
 633
 634     { SMBreadbraw, "SMBreadbraw", 0,
 635         { "Handle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nRes=[d]\n",
 636           NULL, NULL, NULL, NULL } },
 637
 638     { SMBwritebraw, "SMBwritebraw", 0,
 639         { "Handle=[d]\nTotalCount=[d]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\n|DataSize=[d]\nDataOff=[d]\n",
 640           NULL, "WriteRawAck", NULL, NULL } },
 641
 642     { SMBwritec, "SMBwritec", 0,
 643         { NULL, NULL, "Count=[d]\n", NULL, NULL } },
 644
 645     { SMBwriteclose, "SMBwriteclose", 0,
 646         { "Handle=[d]\nCount=[d]\nOffset=[D]\nTime=[T2]Res=([w,w,w,w,w,w])",
 647           NULL, "Count=[d]\n", NULL, NULL } },
 648
 649     { SMBlockread, "SMBlockread", 0,
 650         { "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
 651           "Count=[d]\nRes=([w,w,w,w])\n", NULL, NULL } },
 652
 653     { SMBwriteunlock, "SMBwriteunlock", 0,
 654         { "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
 655           "Count=[d]\n", NULL, NULL } },
 656
 657     { SMBreadBmpx, "SMBreadBmpx", 0,
 658         { "Handle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nRes=[w]\n",
 659           NULL,
 660           "Offset=[D]\nTotCount=[d]\nRemaining=[d]\nRes=([w,w])\nDataSize=[d]\nDataOff=[d]\n",
 661           NULL, NULL } },
 662
 663     { SMBwriteBmpx, "SMBwriteBmpx", 0,
 664         { "Handle=[d]\nTotCount=[d]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\nDataSize=[d]\nDataOff=[d]\n", NULL,
 665           "Remaining=[d]\n", NULL, NULL } },
 666
 667     { SMBwriteBs, "SMBwriteBs", 0,
 668         { "Handle=[d]\nTotCount=[d]\nOffset=[D]\nRes=[W]\nDataSize=[d]\nDataOff=[d]\n",
 669           NULL, "Count=[d]\n", NULL, NULL } },
 670
 671     { SMBsetattrE, "SMBsetattrE", 0,
 672         { "Handle=[d]\nCreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]", NULL,
 673           NULL, NULL, NULL } },
 674
 675     { SMBgetattrE, "SMBgetattrE", 0,
 676         { "Handle=[d]\n", NULL,
 677           "CreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]Size=[D]\nAllocSize=[D]\nAttribute=[A]\n",
 678           NULL, NULL } },
 679
 680     { SMBtranss, "SMBtranss", 0, DEFDESCRIPT },
 681     { SMBioctls, "SMBioctls", 0, DEFDESCRIPT },
 682
 683     { SMBcopy, "SMBcopy", 0,
 684         { "TreeID2=[d]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
 685           "CopyCount=[d]\n",  "|ErrStr=[S]\n",  NULL } },
 686
 687     { SMBmove, "SMBmove", 0,
 688         { "TreeID2=[d]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
 689           "MoveCount=[d]\n",  "|ErrStr=[S]\n",  NULL } },
 690
 691     { SMBopenX, "SMBopenX", FLG_CHAIN,
 692         { "Com2=[w]\nOff2=[d]\nFlags=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]OFun=[w]\nSize=[D]\nTimeOut=[D]\nRes=[W]\n",
 693           "Path=[S]\n",
 694           "Com2=[w]\nOff2=[d]\nHandle=[d]\nAttrib=[A]\nTime=[T2]Size=[D]\nAccess=[w]\nType=[w]\nState=[w]\nAction=[w]\nFileID=[W]\nRes=[w]\n",
 695           NULL, NULL } },
 696
 697     { SMBreadX, "SMBreadX", FLG_CHAIN,
 698         { "Com2=[w]\nOff2=[d]\nHandle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nCountLeft=[d]\n",
 699           NULL,
 700           "Com2=[w]\nOff2=[d]\nRemaining=[d]\nRes=[W]\nDataSize=[d]\nDataOff=[d]\nRes=([w,w,w,w])\n",
 701           NULL, NULL } },
 702
 703     { SMBwriteX, "SMBwriteX", FLG_CHAIN,
 704         { "Com2=[w]\nOff2=[d]\nHandle=[d]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nCountLeft=[d]\nRes=[w]\nDataSize=[d]\nDataOff=[d]\n",
 705           NULL,
 706           "Com2=[w]\nOff2=[d]\nCount=[d]\nRemaining=[d]\nRes=[W]\n",
 707           NULL, NULL } },
 708
 709     { SMBffirst, "SMBffirst", 0,
 710         { "Count=[d]\nAttrib=[A]\n",
 711           "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
 712           "Count=[d]\n",
 713           "BlkType=[B]\nBlkLen=[d]\n*\nRes1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\nRes2=[W]\nAttrib=[a]\nTime=[T1]Size=[D]\nName=[s13]\n",
 714           NULL } },
 715
 716     { SMBfunique, "SMBfunique", 0,
 717         { "Count=[d]\nAttrib=[A]\n",
 718           "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
 719           "Count=[d]\n",
 720           "BlkType=[B]\nBlkLen=[d]\n*\nRes1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\nRes2=[W]\nAttrib=[a]\nTime=[T1]Size=[D]\nName=[s13]\n",
 721           NULL } },
 722
 723     { SMBfclose, "SMBfclose", 0,
 724         { "Count=[d]\nAttrib=[A]\n",
 725           "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
 726           "Count=[d]\n",
 727           "BlkType=[B]\nBlkLen=[d]\n*\nRes1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\nRes2=[W]\nAttrib=[a]\nTime=[T1]Size=[D]\nName=[s13]\n",
 728           NULL } },
 729
 730     { SMBfindnclose, "SMBfindnclose", 0,
 731         { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
 732
 733     { SMBfindclose, "SMBfindclose", 0,
 734         { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
 735
 736     { SMBsends, "SMBsends", 0,
 737         { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
 738
 739     { SMBsendstrt, "SMBsendstrt", 0,
 740         { NULL, "Source=[Z]\nDest=[Z]\n", "GroupID=[d]\n", NULL, NULL } },
 741
 742     { SMBsendend, "SMBsendend", 0,
 743         { "GroupID=[d]\n", NULL, NULL, NULL, NULL } },
 744
 745     { SMBsendtxt, "SMBsendtxt", 0,
 746         { "GroupID=[d]\n", NULL, NULL, NULL, NULL } },
 747
 748     { SMBsendb, "SMBsendb", 0,
 749         { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
 750
 751     { SMBfwdname, "SMBfwdname", 0, DEFDESCRIPT },
 752     { SMBcancelf, "SMBcancelf", 0, DEFDESCRIPT },
 753     { SMBgetmac, "SMBgetmac", 0, DEFDESCRIPT },
 754
 755     { SMBnegprot, "SMBnegprot", 0,
 756         { NULL, NULL, NULL, NULL, print_negprot } },
 757
 758     { SMBsesssetupX, "SMBsesssetupX", FLG_CHAIN,
 759         { NULL, NULL, NULL, NULL, print_sesssetup } },
 760
 761     { SMBtconX, "SMBtconX", FLG_CHAIN,
 762         { "Com2=[w]\nOff2=[d]\nFlags=[w]\nPassLen=[d]\nPasswd&Path&Device=\n",
 763           NULL, "Com2=[w]\nOff2=[d]\n", "ServiceType=[R]\n", NULL } },
 764
 765     { SMBlockingX, "SMBlockingX", FLG_CHAIN,
 766         { NULL, NULL, NULL, NULL, print_lockingandx } },
 767
 768     { SMBtrans2, "SMBtrans2", 0, { NULL, NULL, NULL, NULL, print_trans2 } },
 769
 770     { SMBtranss2, "SMBtranss2", 0, DEFDESCRIPT },
 771     { SMBctemp, "SMBctemp", 0, DEFDESCRIPT },
 772     { SMBreadBs, "SMBreadBs", 0, DEFDESCRIPT },
 773     { SMBtrans, "SMBtrans", 0, { NULL, NULL, NULL, NULL, print_trans } },
 774
 775     { SMBnttrans, "SMBnttrans", 0, DEFDESCRIPT },
 776     { SMBnttranss, "SMBnttranss", 0, DEFDESCRIPT },
 777
 778     { SMBntcreateX, "SMBntcreateX", FLG_CHAIN,
 779         { "Com2=[w]\nOff2=[d]\nRes=[b]\nNameLen=[ld]\nFlags=[W]\nRootDirectoryFid=[D]\nAccessMask=[W]\nAllocationSize=[L]\nExtFileAttributes=[W]\nShareAccess=[W]\nCreateDisposition=[W]\nCreateOptions=[W]\nImpersonationLevel=[W]\nSecurityFlags=[b]\n",
 780           "Path=[C]\n",
 781           "Com2=[w]\nOff2=[d]\nOplockLevel=[b]\nFid=[d]\nCreateAction=[W]\nCreateTime=[T3]LastAccessTime=[T3]LastWriteTime=[T3]ChangeTime=[T3]ExtFileAttributes=[W]\nAllocationSize=[L]\nEndOfFile=[L]\nFileType=[w]\nDeviceState=[w]\nDirectory=[b]\n",
 782           NULL, NULL } },
 783
 784     { SMBntcancel, "SMBntcancel", 0, DEFDESCRIPT },
 785
 786     { -1, NULL, 0, DEFDESCRIPT }
 787 };
 788
 789
 790 /*
 791  * print a SMB message
 792  */
 793 static void
 794 print_smb(netdissect_options *ndo,
 795           const u_char *buf, const u_char *maxbuf)
 796 {
 797     uint16_t flags2;
 798     int nterrcodes;
 799     int command;
 800     uint32_t nterror;
 801     const u_char *words, *maxwords, *data;
 802     const struct smbfns *fn;
 803     const char *fmt_smbheader =
 804         "[P4]SMB Command   =  [B]\nError class   =  [BP1]\nError code    =  [d]\nFlags1        =  [B]\nFlags2        =  [B][P13]\nTree ID       =  [d]\nProc ID       =  [d]\nUID           =  [d]\nMID           =  [d]\nWord Count    =  [b]\n";
 805     int smboffset;
 806
 807     ND_TCHECK(buf[9]);
 808     request = (buf[9] & 0x80) ? 0 : 1;
 809     flags2 = EXTRACT_LE_16BITS(&buf[10]);
 810     unicodestr = flags2 & 0x8000;
 811     nterrcodes = flags2 & 0x4000;
 812     startbuf = buf;
 813
 814     command = buf[4];
 815
 816     fn = smbfind(command, smb_fns);
 817
 818     if (ndo->ndo_vflag > 1)
 819         ND_PRINT((ndo, "\n"));
 820
 821     ND_PRINT((ndo, "SMB PACKET: %s (%s)\n", fn->name, request ? "REQUEST" : "REPLY"));
 822
 823     if (ndo->ndo_vflag < 2)
 824         return;
 825
 826     /* print out the header */
 827     smb_fdata(ndo, buf, fmt_smbheader, buf + 33, unicodestr);
 828
 829     if (nterrcodes) {
 830         nterror = EXTRACT_LE_32BITS(&buf[5]);
 831         if (nterror)
 832             ND_PRINT((ndo, "NTError = %s\n", nt_errstr(nterror)));
 833     } else {
 834         if (buf[5])
 835             ND_PRINT((ndo, "SMBError = %s\n", smb_errstr(buf[5], EXTRACT_LE_16BITS(&buf[7]))));
 836     }
 837
 838     smboffset = 32;
 839
 840     for (;;) {
 841         const char *f1, *f2;
 842         int wct;
 843         u_int bcc;
 844         int newsmboffset;
 845
 846         words = buf + smboffset;
 847         ND_TCHECK(words[0]);
 848         wct = words[0];
 849         data = words + 1 + wct * 2;
 850         maxwords = min(data, maxbuf);
 851
 852         if (request) {
 853             f1 = fn->descript.req_f1;
 854             f2 = fn->descript.req_f2;
 855         } else {
 856             f1 = fn->descript.rep_f1;
 857             f2 = fn->descript.rep_f2;
 858         }
 859
 860         if (fn->descript.fn)
 861             (*fn->descript.fn)(ndo, words, data, buf, maxbuf);
 862         else {
 863             if (wct) {
 864                 if (f1)
 865                     smb_fdata(ndo, words + 1, f1, words + 1 + wct * 2, unicodestr);
 866                 else {
 867                     int i;
 868                     int v;
 869
 870                     for (i = 0; &words[1 + 2 * i] < maxwords; i++) {
 871                         ND_TCHECK2(words[1 + 2 * i], 2);
 872                         v = EXTRACT_LE_16BITS(words + 1 + 2 * i);
 873                         ND_PRINT((ndo, "smb_vwv[%d]=%d (0x%X)\n", i, v, v));
 874                     }
 875                 }
 876             }
 877
 878             ND_TCHECK2(*data, 2);
 879             bcc = EXTRACT_LE_16BITS(data);
 880             ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
 881             if (f2) {
 882                 if (bcc > 0)
 883                     smb_fdata(ndo, data + 2, f2, data + 2 + bcc, unicodestr);
 884             } else {
 885                 if (bcc > 0) {
 886                     ND_PRINT((ndo, "smb_buf[]=\n"));
 887                     smb_print_data(ndo, data + 2, min(bcc, PTR_DIFF(maxbuf, data + 2)));
 888                 }
 889             }
 890         }
 891
 892         if ((fn->flags & FLG_CHAIN) == 0)
 893             break;
 894         if (wct == 0)
 895             break;
 896         ND_TCHECK(words[1]);
 897         command = words[1];
 898         if (command == 0xFF)
 899             break;
 900         ND_TCHECK2(words[3], 2);
 901         newsmboffset = EXTRACT_LE_16BITS(words + 3);
 902
 903         fn = smbfind(command, smb_fns);
 904
 905         ND_PRINT((ndo, "\nSMB PACKET: %s (%s) (CHAINED)\n",
 906             fn->name, request ? "REQUEST" : "REPLY"));
 907         if (newsmboffset <= smboffset) {
 908             ND_PRINT((ndo, "Bad andX offset: %u <= %u\n", newsmboffset, smboffset));
 909             break;
 910         }
 911         smboffset = newsmboffset;
 912     }
 913
 914     ND_PRINT((ndo, "\n"));
 915     return;
 916 trunc:
 917     ND_PRINT((ndo, "%s", tstr));
 918 }
 919
 920
 921 /*
 922  * print a NBT packet received across tcp on port 139
 923  */
 924 void
 925 nbt_tcp_print(netdissect_options *ndo,
 926               const u_char *data, int length)
 927 {
 928     int caplen;
 929     int type;
 930     u_int nbt_len;
 931     const u_char *maxbuf;
 932
 933     if (length < 4)
 934         goto trunc;
 935     if (ndo->ndo_snapend < data)
 936         goto trunc;
 937     caplen = ndo->ndo_snapend - data;
 938     if (caplen < 4)
 939         goto trunc;
 940     maxbuf = data + caplen;
 941     type = data[0];
 942     nbt_len = EXTRACT_16BITS(data + 2);
 943     length -= 4;
 944     caplen -= 4;
 945
 946     startbuf = data;
 947
 948     if (ndo->ndo_vflag < 2) {
 949         ND_PRINT((ndo, " NBT Session Packet: "));
 950         switch (type) {
 951         case 0x00:
 952             ND_PRINT((ndo, "Session Message"));
 953             break;
 954
 955         case 0x81:
 956             ND_PRINT((ndo, "Session Request"));
 957             break;
 958
 959         case 0x82:
 960             ND_PRINT((ndo, "Session Granted"));
 961             break;
 962
 963         case 0x83:
 964           {
 965             int ecode;
 966
 967             if (nbt_len < 4)
 968                 goto trunc;
 969             if (length < 4)
 970                 goto trunc;
 971             if (caplen < 4)
 972                 goto trunc;
 973             ecode = data[4];
 974
 975             ND_PRINT((ndo, "Session Reject, "));
 976             switch (ecode) {
 977             case 0x80:
 978                 ND_PRINT((ndo, "Not listening on called name"));
 979                 break;
 980             case 0x81:
 981                 ND_PRINT((ndo, "Not listening for calling name"));
 982                 break;
 983             case 0x82:
 984                 ND_PRINT((ndo, "Called name not present"));
 985                 break;
 986             case 0x83:
 987                 ND_PRINT((ndo, "Called name present, but insufficient resources"));
 988                 break;
 989             default:
 990                 ND_PRINT((ndo, "Unspecified error 0x%X", ecode));
 991                 break;
 992             }
 993           }
 994             break;
 995
 996         case 0x85:
 997             ND_PRINT((ndo, "Session Keepalive"));
 998             break;
 999
1000         default:
1001             data = smb_fdata(ndo, data, "Unknown packet type [rB]", maxbuf, 0);
1002             break;
1003         }
1004     } else {
1005         ND_PRINT((ndo, "\n>>> NBT Session Packet\n"));
1006         switch (type) {
1007         case 0x00:
1008             data = smb_fdata(ndo, data, "[P1]NBT Session Message\nFlags=[B]\nLength=[rd]\n",
1009                 data + 4, 0);
1010             if (data == NULL)
1011                 break;
1012             if (nbt_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1013                 if ((int)nbt_len > caplen) {
1014                     if ((int)nbt_len > length)
1015                         ND_PRINT((ndo, "WARNING: Packet is continued in later TCP segments\n"));
1016                     else
1017                         ND_PRINT((ndo, "WARNING: Short packet. Try increasing the snap length by %d\n",
1018                             nbt_len - caplen));
1019                 }
1020                 print_smb(ndo, data, maxbuf > data + nbt_len ? data + nbt_len : maxbuf);
1021             } else
1022                 ND_PRINT((ndo, "Session packet:(raw data or continuation?)\n"));
1023             break;
1024
1025         case 0x81:
1026             data = smb_fdata(ndo, data,
1027                 "[P1]NBT Session Request\nFlags=[B]\nLength=[rd]\nDestination=[n1]\nSource=[n1]\n",
1028                 maxbuf, 0);
1029             break;
1030
1031         case 0x82:
1032             data = smb_fdata(ndo, data, "[P1]NBT Session Granted\nFlags=[B]\nLength=[rd]\n", maxbuf, 0);
1033             break;
1034
1035         case 0x83:
1036           {
1037             const u_char *origdata;
1038             int ecode;
1039
1040             origdata = data;
1041             data = smb_fdata(ndo, data, "[P1]NBT SessionReject\nFlags=[B]\nLength=[rd]\nReason=[B]\n",
1042                 maxbuf, 0);
1043             if (data == NULL)
1044                 break;
1045             if (nbt_len >= 1 && caplen >= 1) {
1046                 ecode = origdata[4];
1047                 switch (ecode) {
1048                 case 0x80:
1049                     ND_PRINT((ndo, "Not listening on called name\n"));
1050                     break;
1051                 case 0x81:
1052                     ND_PRINT((ndo, "Not listening for calling name\n"));
1053                     break;
1054                 case 0x82:
1055                     ND_PRINT((ndo, "Called name not present\n"));
1056                     break;
1057                 case 0x83:
1058                     ND_PRINT((ndo, "Called name present, but insufficient resources\n"));
1059                     break;
1060                 default:
1061                     ND_PRINT((ndo, "Unspecified error 0x%X\n", ecode));
1062                     break;
1063                 }
1064             }
1065           }
1066             break;
1067
1068         case 0x85:
1069             data = smb_fdata(ndo, data, "[P1]NBT Session Keepalive\nFlags=[B]\nLength=[rd]\n", maxbuf, 0);
1070             break;
1071
1072         default:
1073             data = smb_fdata(ndo, data, "NBT - Unknown packet type\nType=[B]\n", maxbuf, 0);
1074             break;
1075         }
1076         ND_PRINT((ndo, "\n"));
1077     }
1078     return;
1079 trunc:
1080     ND_PRINT((ndo, "%s", tstr));
1081 }
1082
1083 static const struct tok opcode_str[] = {
1084         { 0,  "QUERY"                   },
1085         { 5,  "REGISTRATION"            },
1086         { 6,  "RELEASE"                 },
1087         { 7,  "WACK"                    },
1088         { 8,  "REFRESH(8)"              },
1089         { 9,  "REFRESH"                 },
1090         { 15, "MULTIHOMED REGISTRATION" },
1091         { 0, NULL }
1092 };
1093
1094 /*
1095  * print a NBT packet received across udp on port 137
1096  */
1097 void
1098 nbt_udp137_print(netdissect_options *ndo,
1099                  const u_char *data, int length)
1100 {
1101     const u_char *maxbuf = data + length;
1102     int name_trn_id, response, opcode, nm_flags, rcode;
1103     int qdcount, ancount, nscount, arcount;
1104     const u_char *p;
1105     int total, i;
1106
1107     ND_TCHECK2(data[10], 2);
1108     name_trn_id = EXTRACT_16BITS(data);
1109     response = (data[2] >> 7);
1110     opcode = (data[2] >> 3) & 0xF;
1111     nm_flags = ((data[2] & 0x7) << 4) + (data[3] >> 4);
1112     rcode = data[3] & 0xF;
1113     qdcount = EXTRACT_16BITS(data + 4);
1114     ancount = EXTRACT_16BITS(data + 6);
1115     nscount = EXTRACT_16BITS(data + 8);
1116     arcount = EXTRACT_16BITS(data + 10);
1117     startbuf = data;
1118
1119     if (maxbuf <= data)
1120         return;
1121
1122     if (ndo->ndo_vflag > 1)
1123         ND_PRINT((ndo, "\n>>> "));
1124
1125     ND_PRINT((ndo, "NBT UDP PACKET(137): %s", tok2str(opcode_str, "OPUNKNOWN", opcode)));
1126     if (response) {
1127         ND_PRINT((ndo, "; %s", rcode ? "NEGATIVE" : "POSITIVE"));
1128     }
1129     ND_PRINT((ndo, "; %s; %s", response ? "RESPONSE" : "REQUEST",
1130               (nm_flags & 1) ? "BROADCAST" : "UNICAST"));
1131
1132     if (ndo->ndo_vflag < 2)
1133         return;
1134
1135     ND_PRINT((ndo, "\nTrnID=0x%X\nOpCode=%d\nNmFlags=0x%X\nRcode=%d\nQueryCount=%d\nAnswerCount=%d\nAuthorityCount=%d\nAddressRecCount=%d\n",
1136         name_trn_id, opcode, nm_flags, rcode, qdcount, ancount, nscount,
1137         arcount));
1138
1139     p = data + 12;
1140
1141     total = ancount + nscount + arcount;
1142
1143     if (qdcount > 100 || total > 100) {
1144         ND_PRINT((ndo, "Corrupt packet??\n"));
1145         return;
1146     }
1147
1148     if (qdcount) {
1149         ND_PRINT((ndo, "QuestionRecords:\n"));
1150         for (i = 0; i < qdcount; i++) {
1151             p = smb_fdata(ndo, p,
1152                 "|Name=[n1]\nQuestionType=[rw]\nQuestionClass=[rw]\n#",
1153                 maxbuf, 0);
1154             if (p == NULL)
1155                 goto out;
1156         }
1157     }
1158
1159     if (total) {
1160         ND_PRINT((ndo, "\nResourceRecords:\n"));
1161         for (i = 0; i < total; i++) {
1162             int rdlen;
1163             int restype;
1164
1165             p = smb_fdata(ndo, p, "Name=[n1]\n#", maxbuf, 0);
1166             if (p == NULL)
1167                 goto out;
1168             restype = EXTRACT_16BITS(p);
1169             p = smb_fdata(ndo, p, "ResType=[rw]\nResClass=[rw]\nTTL=[rD]\n", p + 8, 0);
1170             if (p == NULL)
1171                 goto out;
1172             rdlen = EXTRACT_16BITS(p);
1173             ND_PRINT((ndo, "ResourceLength=%d\nResourceData=\n", rdlen));
1174             p += 2;
1175             if (rdlen == 6) {
1176                 p = smb_fdata(ndo, p, "AddrType=[rw]\nAddress=[b.b.b.b]\n", p + rdlen, 0);
1177                 if (p == NULL)
1178                     goto out;
1179             } else {
1180                 if (restype == 0x21) {
1181                     int numnames;
1182
1183                     ND_TCHECK(*p);
1184                     numnames = p[0];
1185                     p = smb_fdata(ndo, p, "NumNames=[B]\n", p + 1, 0);
1186                     if (p == NULL)
1187                         goto out;
1188                     while (numnames--) {
1189                         p = smb_fdata(ndo, p, "Name=[n2]\t#", maxbuf, 0);
1190                         if (p == NULL)
1191                             goto out;
1192                         ND_TCHECK(*p);
1193                         if (p[0] & 0x80)
1194                             ND_PRINT((ndo, "<GROUP> "));
1195                         switch (p[0] & 0x60) {
1196                         case 0x00: ND_PRINT((ndo, "B ")); break;
1197                         case 0x20: ND_PRINT((ndo, "P ")); break;
1198                         case 0x40: ND_PRINT((ndo, "M ")); break;
1199                         case 0x60: ND_PRINT((ndo, "_ ")); break;
1200                         }
1201                         if (p[0] & 0x10)
1202                             ND_PRINT((ndo, "<DEREGISTERING> "));
1203                         if (p[0] & 0x08)
1204                             ND_PRINT((ndo, "<CONFLICT> "));
1205                         if (p[0] & 0x04)
1206                             ND_PRINT((ndo, "<ACTIVE> "));
1207                         if (p[0] & 0x02)
1208                             ND_PRINT((ndo, "<PERMANENT> "));
1209                         ND_PRINT((ndo, "\n"));
1210                         p += 2;
1211                     }
1212                 } else {
1213                     smb_print_data(ndo, p, min(rdlen, length - (p - data)));
1214                     p += rdlen;
1215                 }
1216             }
1217         }
1218     }
1219
1220     if (p < maxbuf)
1221         smb_fdata(ndo, p, "AdditionalData:\n", maxbuf, 0);
1222
1223 out:
1224     ND_PRINT((ndo, "\n"));
1225     return;
1226 trunc:
1227     ND_PRINT((ndo, "%s", tstr));
1228 }
1229
1230 /*
1231  * Print an SMB-over-TCP packet received across tcp on port 445
1232  */
1233 void
1234 smb_tcp_print(netdissect_options *ndo,
1235               const u_char * data, int length)
1236 {
1237     int caplen;
1238     u_int smb_len;
1239     const u_char *maxbuf;
1240
1241     if (length < 4)
1242         goto trunc;
1243     if (ndo->ndo_snapend < data)
1244         goto trunc;
1245     caplen = ndo->ndo_snapend - data;
1246     if (caplen < 4)
1247         goto trunc;
1248     maxbuf = data + caplen;
1249     smb_len = EXTRACT_24BITS(data + 1);
1250     length -= 4;
1251     caplen -= 4;
1252
1253     startbuf = data;
1254     data += 4;
1255
1256     if (smb_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1257         if ((int)smb_len > caplen) {
1258             if ((int)smb_len > length)
1259                 ND_PRINT((ndo, " WARNING: Packet is continued in later TCP segments\n"));
1260             else
1261                 ND_PRINT((ndo, " WARNING: Short packet. Try increasing the snap length by %d\n",
1262                     smb_len - caplen));
1263         } else
1264             ND_PRINT((ndo, " "));
1265         print_smb(ndo, data, maxbuf > data + smb_len ? data + smb_len : maxbuf);
1266     } else
1267         ND_PRINT((ndo, " SMB-over-TCP packet:(raw data or continuation?)\n"));
1268     return;
1269 trunc:
1270     ND_PRINT((ndo, "%s", tstr));
1271 }
1272
1273 /*
1274  * print a NBT packet received across udp on port 138
1275  */
1276 void
1277 nbt_udp138_print(netdissect_options *ndo,
1278                  const u_char *data, int length)
1279 {
1280     const u_char *maxbuf = data + length;
1281
1282     if (maxbuf > ndo->ndo_snapend)
1283         maxbuf = ndo->ndo_snapend;
1284     if (maxbuf <= data)
1285         return;
1286     startbuf = data;
1287
1288     if (ndo->ndo_vflag < 2) {
1289         ND_PRINT((ndo, "NBT UDP PACKET(138)"));
1290         return;
1291     }
1292
1293     data = smb_fdata(ndo, data,
1294         "\n>>> NBT UDP PACKET(138) Res=[rw] ID=[rw] IP=[b.b.b.b] Port=[rd] Length=[rd] Res2=[rw]\nSourceName=[n1]\nDestName=[n1]\n#",
1295         maxbuf, 0);
1296
1297     if (data != NULL) {
1298         /* If there isn't enough data for "\377SMB", don't check for it. */
1299         if (&data[3] >= maxbuf)
1300             goto out;
1301
1302         if (memcmp(data, "\377SMB",4) == 0)
1303             print_smb(ndo, data, maxbuf);
1304     }
1305 out:
1306     ND_PRINT((ndo, "\n"));
1307 }
1308
1309
1310 /*
1311    print netbeui frames
1312 */
1313 struct nbf_strings {
1314         const char      *name;
1315         const char      *nonverbose;
1316         const char      *verbose;
1317 } nbf_strings[0x20] = {
1318         { "Add Group Name Query", ", [P23]Name to add=[n2]#",
1319           "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1320         { "Add Name Query", ", [P23]Name to add=[n2]#",
1321           "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1322         { "Name In Conflict", NULL, NULL },
1323         { "Status Query", NULL, NULL },
1324         { NULL, NULL, NULL },   /* not used */
1325         { NULL, NULL, NULL },   /* not used */
1326         { NULL, NULL, NULL },   /* not used */
1327         { "Terminate Trace", NULL, NULL },
1328         { "Datagram", NULL,
1329           "[P7]Destination=[n2]\nSource=[n2]\n" },
1330         { "Broadcast Datagram", NULL,
1331           "[P7]Destination=[n2]\nSource=[n2]\n" },
1332         { "Name Query", ", [P7]Name=[n2]#",
1333           "[P1]SessionNumber=[B]\nNameType=[B][P2]\nResponseCorrelator=[w]\nName=[n2]\nName of sender=[n2]\n" },
1334         { NULL, NULL, NULL },   /* not used */
1335         { NULL, NULL, NULL },   /* not used */
1336         { "Add Name Response", ", [P1]GroupName=[w] [P4]Destination=[n2] Source=[n2]#",
1337           "AddNameInProcess=[B]\nGroupName=[w]\nTransmitCorrelator=[w][P2]\nDestination=[n2]\nSource=[n2]\n" },
1338         { "Name Recognized", NULL,
1339           "[P1]Data2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nDestination=[n2]\nSource=[n2]\n" },
1340         { "Status Response", NULL, NULL },
1341         { NULL, NULL, NULL },   /* not used */
1342         { NULL, NULL, NULL },   /* not used */
1343         { NULL, NULL, NULL },   /* not used */
1344         { "Terminate Trace", NULL, NULL },
1345         { "Data Ack", NULL,
1346           "[P3]TransmitCorrelator=[w][P2]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1347         { "Data First/Middle", NULL,
1348           "Flags=[{RECEIVE_CONTINUE|NO_ACK||PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1349         { "Data Only/Last", NULL,
1350           "Flags=[{|NO_ACK|PIGGYBACK_ACK_ALLOWED|PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1351         { "Session Confirm", NULL,
1352           "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1353         { "Session End", NULL,
1354           "[P1]Data2=[w][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1355         { "Session Initialize", NULL,
1356           "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1357         { "No Receive", NULL,
1358           "Flags=[{|SEND_NO_ACK}]\nDataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1359         { "Receive Outstanding", NULL,
1360           "[P1]DataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1361         { "Receive Continue", NULL,
1362           "[P2]TransmitCorrelator=[w]\n[P2]RemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1363         { NULL, NULL, NULL },   /* not used */
1364         { NULL, NULL, NULL },   /* not used */
1365         { "Session Alive", NULL, NULL }
1366 };
1367
1368 void
1369 netbeui_print(netdissect_options *ndo,
1370               u_short control, const u_char *data, int length)
1371 {
1372     const u_char *maxbuf = data + length;
1373     int len;
1374     int command;
1375     const u_char *data2;
1376     int is_truncated = 0;
1377
1378     if (maxbuf > ndo->ndo_snapend)
1379         maxbuf = ndo->ndo_snapend;
1380     ND_TCHECK(data[4]);
1381     len = EXTRACT_LE_16BITS(data);
1382     command = data[4];
1383     data2 = data + len;
1384     if (data2 >= maxbuf) {
1385         data2 = maxbuf;
1386         is_truncated = 1;
1387     }
1388
1389     startbuf = data;
1390
1391     if (ndo->ndo_vflag < 2) {
1392         ND_PRINT((ndo, "NBF Packet: "));
1393         data = smb_fdata(ndo, data, "[P5]#", maxbuf, 0);
1394     } else {
1395         ND_PRINT((ndo, "\n>>> NBF Packet\nType=0x%X ", control));
1396         data = smb_fdata(ndo, data, "Length=[d] Signature=[w] Command=[B]\n#", maxbuf, 0);
1397     }
1398     if (data == NULL)
1399         goto out;
1400
1401     if (command > 0x1f || nbf_strings[command].name == NULL) {
1402         if (ndo->ndo_vflag < 2)
1403             data = smb_fdata(ndo, data, "Unknown NBF Command#", data2, 0);
1404         else
1405             data = smb_fdata(ndo, data, "Unknown NBF Command\n", data2, 0);
1406     } else {
1407         if (ndo->ndo_vflag < 2) {
1408             ND_PRINT((ndo, "%s", nbf_strings[command].name));
1409             if (nbf_strings[command].nonverbose != NULL)
1410                 data = smb_fdata(ndo, data, nbf_strings[command].nonverbose, data2, 0);
1411         } else {
1412             ND_PRINT((ndo, "%s:\n", nbf_strings[command].name));
1413             if (nbf_strings[command].verbose != NULL)
1414                 data = smb_fdata(ndo, data, nbf_strings[command].verbose, data2, 0);
1415             else
1416                 ND_PRINT((ndo, "\n"));
1417         }
1418     }
1419
1420     if (ndo->ndo_vflag < 2)
1421         return;
1422
1423     if (data == NULL)
1424         goto out;
1425
1426     if (is_truncated) {
1427         /* data2 was past the end of the buffer */
1428         goto out;
1429     }
1430
1431     /* If this isn't a command that would contain an SMB message, quit. */
1432     if (command != 0x08 && command != 0x09 && command != 0x15 &&
1433         command != 0x16)
1434         goto out;
1435
1436     /* If there isn't enough data for "\377SMB", don't look for it. */
1437     if (&data2[3] >= maxbuf)
1438         goto out;
1439
1440     if (memcmp(data2, "\377SMB",4) == 0)
1441         print_smb(ndo, data2, maxbuf);
1442     else {
1443         int i;
1444         for (i = 0; i < 128; i++) {
1445             if (&data2[i + 3] >= maxbuf)
1446                 break;
1447             if (memcmp(&data2[i], "\377SMB", 4) == 0) {
1448                 ND_PRINT((ndo, "found SMB packet at %d\n", i));
1449                 print_smb(ndo, &data2[i], maxbuf);
1450                 break;
1451             }
1452         }
1453     }
1454
1455 out:
1456     ND_PRINT((ndo, "\n"));
1457     return;
1458 trunc:
1459     ND_PRINT((ndo, "%s", tstr));
1460 }
1461
1462
1463 /*
1464  * print IPX-Netbios frames
1465  */
1466 void
1467 ipx_netbios_print(netdissect_options *ndo,
1468                   const u_char *data, u_int length)
1469 {
1470     /*
1471      * this is a hack till I work out how to parse the rest of the
1472      * NetBIOS-over-IPX stuff
1473      */
1474     int i;
1475     const u_char *maxbuf;
1476
1477     maxbuf = data + length;
1478     /* Don't go past the end of the captured data in the packet. */
1479     if (maxbuf > ndo->ndo_snapend)
1480         maxbuf = ndo->ndo_snapend;
1481     startbuf = data;
1482     for (i = 0; i < 128; i++) {
1483         if (&data[i + 4] > maxbuf)
1484             break;
1485         if (memcmp(&data[i], "\377SMB", 4) == 0) {
1486             smb_fdata(ndo, data, "\n>>> IPX transport ", &data[i], 0);
1487             print_smb(ndo, &data[i], maxbuf);
1488             ND_PRINT((ndo, "\n"));
1489             break;
1490         }
1491     }
1492     if (i == 128)
1493         smb_fdata(ndo, data, "\n>>> Unknown IPX ", maxbuf, 0);
1494 }