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_TCHECK_2(param);
 117         level = EXTRACT_LE_U_2(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_1(words);
 183     if (request) {
 184         ND_TCHECK_2(w + (14 * 2));
 185         pcnt = EXTRACT_LE_U_2(w + 9 * 2);
 186         param = buf + EXTRACT_LE_U_2(w + 10 * 2);
 187         dcnt = EXTRACT_LE_U_2(w + 11 * 2);
 188         data = buf + EXTRACT_LE_U_2(w + 12 * 2);
 189         fn = smbfindint(EXTRACT_LE_U_2(w + 14 * 2), trans2_fns);
 190     } else {
 191         if (EXTRACT_U_1(words) == 0) {
 192             ND_PRINT((ndo, "%s\n", fn->name));
 193             ND_PRINT((ndo, "Trans2Interim\n"));
 194             return;
 195         }
 196         ND_TCHECK_2(w + (7 * 2));
 197         pcnt = EXTRACT_LE_U_2(w + 3 * 2);
 198         param = buf + EXTRACT_LE_U_2(w + 4 * 2);
 199         dcnt = EXTRACT_LE_U_2(w + 6 * 2);
 200         data = buf + EXTRACT_LE_U_2(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 (EXTRACT_U_1(words) == 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_TCHECK_2(dat);
 227     bcc = EXTRACT_LE_U_2(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_1(data);
 248     command = EXTRACT_U_1(data);
 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_TCHECK_2(w + (12 * 2));
 346         paramlen = EXTRACT_LE_U_2(w + 9 * 2);
 347         param = buf + EXTRACT_LE_U_2(w + 10 * 2);
 348         datalen = EXTRACT_LE_U_2(w + 11 * 2);
 349         data = buf + EXTRACT_LE_U_2(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_TCHECK_2(w + (7 * 2));
 356         paramlen = EXTRACT_LE_U_2(w + 3 * 2);
 357         param = buf + EXTRACT_LE_U_2(w + 4 * 2);
 358         datalen = EXTRACT_LE_U_2(w + 6 * 2);
 359         data = buf + EXTRACT_LE_U_2(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,
 367               min(words + 1 + 2 * EXTRACT_U_1(words), maxbuf),
 368               unicodestr);
 369
 370     ND_TCHECK_2(data1);
 371     bcc = EXTRACT_LE_U_2(data1);
 372     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
 373     if (bcc > 0) {
 374         smb_fdata(ndo, data1 + 2, f2, maxbuf - (paramlen + datalen), unicodestr);
 375
 376         if (strcmp((const char *)(data1 + 2), "\\MAILSLOT\\BROWSE") == 0) {
 377             print_browse(ndo, param, paramlen, data, datalen);
 378             return;
 379         }
 380
 381         if (strcmp((const char *)(data1 + 2), "\\PIPE\\LANMAN") == 0) {
 382             print_ipc(ndo, param, paramlen, data, datalen);
 383             return;
 384         }
 385
 386         if (paramlen)
 387             smb_fdata(ndo, param, f3, min(param + paramlen, maxbuf), unicodestr);
 388         if (datalen)
 389             smb_fdata(ndo, data, f4, min(data + datalen, maxbuf), unicodestr);
 390     }
 391     return;
 392 trunc:
 393     ND_PRINT((ndo, "%s", tstr));
 394 }
 395
 396
 397 static void
 398 print_negprot(netdissect_options *ndo,
 399               const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 400 {
 401     u_int wct, bcc;
 402     const char *f1 = NULL, *f2 = NULL;
 403
 404     ND_TCHECK_1(words);
 405     wct = EXTRACT_U_1(words);
 406     if (request)
 407         f2 = "*|Dialect=[Y]\n";
 408     else {
 409         if (wct == 1)
 410             f1 = "Core Protocol\nDialectIndex=[d]";
 411         else if (wct == 17)
 412             f1 = "NT1 Protocol\nDialectIndex=[d]\nSecMode=[B]\nMaxMux=[d]\nNumVcs=[d]\nMaxBuffer=[D]\nRawSize=[D]\nSessionKey=[W]\nCapabilities=[W]\nServerTime=[T3]TimeZone=[d]\nCryptKey=";
 413         else if (wct == 13)
 414             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=";
 415     }
 416
 417     if (f1)
 418         smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
 419             unicodestr);
 420     else
 421         smb_print_data(ndo, words + 1, min(wct * 2, PTR_DIFF(maxbuf, words + 1)));
 422
 423     ND_TCHECK_2(data);
 424     bcc = EXTRACT_LE_U_2(data);
 425     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
 426     if (bcc > 0) {
 427         if (f2)
 428             smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_U_2(data),
 429                                              maxbuf), unicodestr);
 430         else
 431             smb_print_data(ndo, data + 2,
 432                            min(EXTRACT_LE_U_2(data), PTR_DIFF(maxbuf, data + 2)));
 433     }
 434     return;
 435 trunc:
 436     ND_PRINT((ndo, "%s", tstr));
 437 }
 438
 439 static void
 440 print_sesssetup(netdissect_options *ndo,
 441                 const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 442 {
 443     u_int wct, bcc;
 444     const char *f1 = NULL, *f2 = NULL;
 445
 446     ND_TCHECK_1(words);
 447     wct = EXTRACT_U_1(words);
 448     if (request) {
 449         if (wct == 10)
 450             f1 = "Com2=[w]\nOff2=[d]\nBufSize=[d]\nMpxMax=[d]\nVcNum=[d]\nSessionKey=[W]\nPassLen=[d]\nCryptLen=[d]\nCryptOff=[d]\nPass&Name=\n";
 451         else
 452             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";
 453     } else {
 454         if (wct == 3) {
 455             f1 = "Com2=[w]\nOff2=[d]\nAction=[w]\n";
 456         } else if (wct == 13) {
 457             f1 = "Com2=[B]\nRes=[B]\nOff2=[d]\nAction=[w]\n";
 458             f2 = "NativeOS=[S]\nNativeLanMan=[S]\nPrimaryDomain=[S]\n";
 459         }
 460     }
 461
 462     if (f1)
 463         smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
 464             unicodestr);
 465     else
 466         smb_print_data(ndo, words + 1, min(wct * 2, PTR_DIFF(maxbuf, words + 1)));
 467
 468     ND_TCHECK_2(data);
 469     bcc = EXTRACT_LE_U_2(data);
 470     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
 471     if (bcc > 0) {
 472         if (f2)
 473             smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_U_2(data),
 474                                              maxbuf), unicodestr);
 475         else
 476             smb_print_data(ndo, data + 2,
 477                            min(EXTRACT_LE_U_2(data), PTR_DIFF(maxbuf, data + 2)));
 478     }
 479     return;
 480 trunc:
 481     ND_PRINT((ndo, "%s", tstr));
 482 }
 483
 484 static void
 485 print_lockingandx(netdissect_options *ndo,
 486                   const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 487 {
 488     u_int wct, bcc;
 489     const u_char *maxwords;
 490     const char *f1 = NULL, *f2 = NULL;
 491
 492     ND_TCHECK_1(words);
 493     wct = EXTRACT_U_1(words);
 494     if (request) {
 495         f1 = "Com2=[w]\nOff2=[d]\nHandle=[d]\nLockType=[w]\nTimeOut=[D]\nUnlockCount=[d]\nLockCount=[d]\n";
 496         ND_TCHECK_1(words + 7);
 497         if (EXTRACT_U_1(words + 7) & 0x10)
 498             f2 = "*Process=[d]\n[P2]Offset=[M]\nLength=[M]\n";
 499         else
 500             f2 = "*Process=[d]\nOffset=[D]\nLength=[D]\n";
 501     } else {
 502         f1 = "Com2=[w]\nOff2=[d]\n";
 503     }
 504
 505     maxwords = min(words + 1 + wct * 2, maxbuf);
 506     if (wct)
 507         smb_fdata(ndo, words + 1, f1, maxwords, unicodestr);
 508
 509     ND_TCHECK_2(data);
 510     bcc = EXTRACT_LE_U_2(data);
 511     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
 512     if (bcc > 0) {
 513         if (f2)
 514             smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_U_2(data),
 515                                              maxbuf), unicodestr);
 516         else
 517             smb_print_data(ndo, data + 2,
 518                            min(EXTRACT_LE_U_2(data), PTR_DIFF(maxbuf, data + 2)));
 519     }
 520     return;
 521 trunc:
 522     ND_PRINT((ndo, "%s", tstr));
 523 }
 524
 525
 526 static const struct smbfns smb_fns[] = {
 527     { -1, "SMBunknown", 0, DEFDESCRIPT },
 528
 529     { SMBtcon, "SMBtcon", 0,
 530         { NULL, "Path=[Z]\nPassword=[Z]\nDevice=[Z]\n",
 531           "MaxXmit=[d]\nTreeId=[d]\n", NULL,
 532           NULL } },
 533
 534     { SMBtdis, "SMBtdis", 0, DEFDESCRIPT },
 535     { SMBexit,  "SMBexit", 0, DEFDESCRIPT },
 536     { SMBioctl, "SMBioctl", 0, DEFDESCRIPT },
 537
 538     { SMBecho, "SMBecho", 0,
 539         { "ReverbCount=[d]\n", NULL,
 540           "SequenceNum=[d]\n", NULL,
 541           NULL } },
 542
 543     { SMBulogoffX, "SMBulogoffX", FLG_CHAIN, DEFDESCRIPT },
 544
 545     { SMBgetatr, "SMBgetatr", 0,
 546         { NULL, "Path=[Z]\n",
 547           "Attribute=[A]\nTime=[T2]Size=[D]\nRes=([w,w,w,w,w])\n", NULL,
 548           NULL } },
 549
 550     { SMBsetatr, "SMBsetatr", 0,
 551         { "Attribute=[A]\nTime=[T2]Res=([w,w,w,w,w])\n", "Path=[Z]\n",
 552           NULL, NULL, NULL } },
 553
 554     { SMBchkpth, "SMBchkpth", 0,
 555        { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 556
 557     { SMBsearch, "SMBsearch", 0,
 558         { "Count=[d]\nAttrib=[A]\n",
 559           "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\nRes2=[W]\n",
 560           "Count=[d]\n",
 561           "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",
 562           NULL } },
 563
 564     { SMBopen, "SMBopen", 0,
 565         { "Mode=[w]\nAttribute=[A]\n", "Path=[Z]\n",
 566           "Handle=[d]\nOAttrib=[A]\nTime=[T2]Size=[D]\nAccess=[w]\n",
 567           NULL, NULL } },
 568
 569     { SMBcreate, "SMBcreate", 0,
 570         { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[d]\n", NULL, NULL } },
 571
 572     { SMBmknew, "SMBmknew", 0,
 573         { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[d]\n", NULL, NULL } },
 574
 575     { SMBunlink, "SMBunlink", 0,
 576         { "Attrib=[A]\n", "Path=[Z]\n", NULL, NULL, NULL } },
 577
 578     { SMBread, "SMBread", 0,
 579         { "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
 580           "Count=[d]\nRes=([w,w,w,w])\n", NULL, NULL } },
 581
 582     { SMBwrite, "SMBwrite", 0,
 583         { "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
 584           "Count=[d]\n", NULL, NULL } },
 585
 586     { SMBclose, "SMBclose", 0,
 587         { "Handle=[d]\nTime=[T2]", NULL, NULL, NULL, NULL } },
 588
 589     { SMBmkdir, "SMBmkdir", 0,
 590         { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 591
 592     { SMBrmdir, "SMBrmdir", 0,
 593         { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 594
 595     { SMBdskattr, "SMBdskattr", 0,
 596         { NULL, NULL,
 597           "TotalUnits=[d]\nBlocksPerUnit=[d]\nBlockSize=[d]\nFreeUnits=[d]\nMedia=[w]\n",
 598           NULL, NULL } },
 599
 600     { SMBmv, "SMBmv", 0,
 601         { "Attrib=[A]\n", "OldPath=[Z]\nNewPath=[Z]\n", NULL, NULL, NULL } },
 602
 603     /*
 604      * this is a Pathworks specific call, allowing the
 605      * changing of the root path
 606      */
 607     { pSETDIR, "SMBsetdir", 0, { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 608
 609     { SMBlseek, "SMBlseek", 0,
 610         { "Handle=[d]\nMode=[w]\nOffset=[D]\n", "Offset=[D]\n", NULL, NULL, NULL } },
 611
 612     { SMBflush, "SMBflush", 0, { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
 613
 614     { SMBsplopen, "SMBsplopen", 0,
 615         { "SetupLen=[d]\nMode=[w]\n", "Ident=[Z]\n", "Handle=[d]\n",
 616           NULL, NULL } },
 617
 618     { SMBsplclose, "SMBsplclose", 0,
 619         { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
 620
 621     { SMBsplretq, "SMBsplretq", 0,
 622         { "MaxCount=[d]\nStartIndex=[d]\n", NULL,
 623           "Count=[d]\nIndex=[d]\n",
 624           "*Time=[T2]Status=[B]\nJobID=[d]\nSize=[D]\nRes=[B]Name=[s16]\n",
 625           NULL } },
 626
 627     { SMBsplwr, "SMBsplwr", 0,
 628         { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
 629
 630     { SMBlock, "SMBlock", 0,
 631         { "Handle=[d]\nCount=[D]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
 632
 633     { SMBunlock, "SMBunlock", 0,
 634         { "Handle=[d]\nCount=[D]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
 635
 636     /* CORE+ PROTOCOL FOLLOWS */
 637
 638     { SMBreadbraw, "SMBreadbraw", 0,
 639         { "Handle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nRes=[d]\n",
 640           NULL, NULL, NULL, NULL } },
 641
 642     { SMBwritebraw, "SMBwritebraw", 0,
 643         { "Handle=[d]\nTotalCount=[d]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\n|DataSize=[d]\nDataOff=[d]\n",
 644           NULL, "WriteRawAck", NULL, NULL } },
 645
 646     { SMBwritec, "SMBwritec", 0,
 647         { NULL, NULL, "Count=[d]\n", NULL, NULL } },
 648
 649     { SMBwriteclose, "SMBwriteclose", 0,
 650         { "Handle=[d]\nCount=[d]\nOffset=[D]\nTime=[T2]Res=([w,w,w,w,w,w])",
 651           NULL, "Count=[d]\n", NULL, NULL } },
 652
 653     { SMBlockread, "SMBlockread", 0,
 654         { "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
 655           "Count=[d]\nRes=([w,w,w,w])\n", NULL, NULL } },
 656
 657     { SMBwriteunlock, "SMBwriteunlock", 0,
 658         { "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
 659           "Count=[d]\n", NULL, NULL } },
 660
 661     { SMBreadBmpx, "SMBreadBmpx", 0,
 662         { "Handle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nRes=[w]\n",
 663           NULL,
 664           "Offset=[D]\nTotCount=[d]\nRemaining=[d]\nRes=([w,w])\nDataSize=[d]\nDataOff=[d]\n",
 665           NULL, NULL } },
 666
 667     { SMBwriteBmpx, "SMBwriteBmpx", 0,
 668         { "Handle=[d]\nTotCount=[d]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\nDataSize=[d]\nDataOff=[d]\n", NULL,
 669           "Remaining=[d]\n", NULL, NULL } },
 670
 671     { SMBwriteBs, "SMBwriteBs", 0,
 672         { "Handle=[d]\nTotCount=[d]\nOffset=[D]\nRes=[W]\nDataSize=[d]\nDataOff=[d]\n",
 673           NULL, "Count=[d]\n", NULL, NULL } },
 674
 675     { SMBsetattrE, "SMBsetattrE", 0,
 676         { "Handle=[d]\nCreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]", NULL,
 677           NULL, NULL, NULL } },
 678
 679     { SMBgetattrE, "SMBgetattrE", 0,
 680         { "Handle=[d]\n", NULL,
 681           "CreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]Size=[D]\nAllocSize=[D]\nAttribute=[A]\n",
 682           NULL, NULL } },
 683
 684     { SMBtranss, "SMBtranss", 0, DEFDESCRIPT },
 685     { SMBioctls, "SMBioctls", 0, DEFDESCRIPT },
 686
 687     { SMBcopy, "SMBcopy", 0,
 688         { "TreeID2=[d]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
 689           "CopyCount=[d]\n",  "|ErrStr=[S]\n",  NULL } },
 690
 691     { SMBmove, "SMBmove", 0,
 692         { "TreeID2=[d]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
 693           "MoveCount=[d]\n",  "|ErrStr=[S]\n",  NULL } },
 694
 695     { SMBopenX, "SMBopenX", FLG_CHAIN,
 696         { "Com2=[w]\nOff2=[d]\nFlags=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]OFun=[w]\nSize=[D]\nTimeOut=[D]\nRes=[W]\n",
 697           "Path=[S]\n",
 698           "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",
 699           NULL, NULL } },
 700
 701     { SMBreadX, "SMBreadX", FLG_CHAIN,
 702         { "Com2=[w]\nOff2=[d]\nHandle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nCountLeft=[d]\n",
 703           NULL,
 704           "Com2=[w]\nOff2=[d]\nRemaining=[d]\nRes=[W]\nDataSize=[d]\nDataOff=[d]\nRes=([w,w,w,w])\n",
 705           NULL, NULL } },
 706
 707     { SMBwriteX, "SMBwriteX", FLG_CHAIN,
 708         { "Com2=[w]\nOff2=[d]\nHandle=[d]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nCountLeft=[d]\nRes=[w]\nDataSize=[d]\nDataOff=[d]\n",
 709           NULL,
 710           "Com2=[w]\nOff2=[d]\nCount=[d]\nRemaining=[d]\nRes=[W]\n",
 711           NULL, NULL } },
 712
 713     { SMBffirst, "SMBffirst", 0,
 714         { "Count=[d]\nAttrib=[A]\n",
 715           "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
 716           "Count=[d]\n",
 717           "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",
 718           NULL } },
 719
 720     { SMBfunique, "SMBfunique", 0,
 721         { "Count=[d]\nAttrib=[A]\n",
 722           "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
 723           "Count=[d]\n",
 724           "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",
 725           NULL } },
 726
 727     { SMBfclose, "SMBfclose", 0,
 728         { "Count=[d]\nAttrib=[A]\n",
 729           "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
 730           "Count=[d]\n",
 731           "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",
 732           NULL } },
 733
 734     { SMBfindnclose, "SMBfindnclose", 0,
 735         { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
 736
 737     { SMBfindclose, "SMBfindclose", 0,
 738         { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
 739
 740     { SMBsends, "SMBsends", 0,
 741         { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
 742
 743     { SMBsendstrt, "SMBsendstrt", 0,
 744         { NULL, "Source=[Z]\nDest=[Z]\n", "GroupID=[d]\n", NULL, NULL } },
 745
 746     { SMBsendend, "SMBsendend", 0,
 747         { "GroupID=[d]\n", NULL, NULL, NULL, NULL } },
 748
 749     { SMBsendtxt, "SMBsendtxt", 0,
 750         { "GroupID=[d]\n", NULL, NULL, NULL, NULL } },
 751
 752     { SMBsendb, "SMBsendb", 0,
 753         { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
 754
 755     { SMBfwdname, "SMBfwdname", 0, DEFDESCRIPT },
 756     { SMBcancelf, "SMBcancelf", 0, DEFDESCRIPT },
 757     { SMBgetmac, "SMBgetmac", 0, DEFDESCRIPT },
 758
 759     { SMBnegprot, "SMBnegprot", 0,
 760         { NULL, NULL, NULL, NULL, print_negprot } },
 761
 762     { SMBsesssetupX, "SMBsesssetupX", FLG_CHAIN,
 763         { NULL, NULL, NULL, NULL, print_sesssetup } },
 764
 765     { SMBtconX, "SMBtconX", FLG_CHAIN,
 766         { "Com2=[w]\nOff2=[d]\nFlags=[w]\nPassLen=[d]\nPasswd&Path&Device=\n",
 767           NULL, "Com2=[w]\nOff2=[d]\n", "ServiceType=[R]\n", NULL } },
 768
 769     { SMBlockingX, "SMBlockingX", FLG_CHAIN,
 770         { NULL, NULL, NULL, NULL, print_lockingandx } },
 771
 772     { SMBtrans2, "SMBtrans2", 0, { NULL, NULL, NULL, NULL, print_trans2 } },
 773
 774     { SMBtranss2, "SMBtranss2", 0, DEFDESCRIPT },
 775     { SMBctemp, "SMBctemp", 0, DEFDESCRIPT },
 776     { SMBreadBs, "SMBreadBs", 0, DEFDESCRIPT },
 777     { SMBtrans, "SMBtrans", 0, { NULL, NULL, NULL, NULL, print_trans } },
 778
 779     { SMBnttrans, "SMBnttrans", 0, DEFDESCRIPT },
 780     { SMBnttranss, "SMBnttranss", 0, DEFDESCRIPT },
 781
 782     { SMBntcreateX, "SMBntcreateX", FLG_CHAIN,
 783         { "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",
 784           "Path=[C]\n",
 785           "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",
 786           NULL, NULL } },
 787
 788     { SMBntcancel, "SMBntcancel", 0, DEFDESCRIPT },
 789
 790     { -1, NULL, 0, DEFDESCRIPT }
 791 };
 792
 793
 794 /*
 795  * print a SMB message
 796  */
 797 static void
 798 print_smb(netdissect_options *ndo,
 799           const u_char *buf, const u_char *maxbuf)
 800 {
 801     uint16_t flags2;
 802     int nterrcodes;
 803     int command;
 804     uint32_t nterror;
 805     const u_char *words, *maxwords, *data;
 806     const struct smbfns *fn;
 807     const char *fmt_smbheader =
 808         "[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";
 809     int smboffset;
 810
 811     ND_TCHECK_1(buf + 9);
 812     request = (EXTRACT_U_1(buf + 9) & 0x80) ? 0 : 1;
 813     startbuf = buf;
 814
 815     command = EXTRACT_U_1(buf + 4);
 816
 817     fn = smbfind(command, smb_fns);
 818
 819     if (ndo->ndo_vflag > 1)
 820         ND_PRINT((ndo, "\n"));
 821
 822     ND_PRINT((ndo, "SMB PACKET: %s (%s)\n", fn->name, request ? "REQUEST" : "REPLY"));
 823
 824     if (ndo->ndo_vflag < 2)
 825         return;
 826
 827     ND_TCHECK_2(buf + 10);
 828     flags2 = EXTRACT_LE_U_2(buf + 10);
 829     unicodestr = flags2 & 0x8000;
 830     nterrcodes = flags2 & 0x4000;
 831
 832     /* print out the header */
 833     smb_fdata(ndo, buf, fmt_smbheader, buf + 33, unicodestr);
 834
 835     if (nterrcodes) {
 836         nterror = EXTRACT_LE_U_4(buf + 5);
 837         if (nterror)
 838             ND_PRINT((ndo, "NTError = %s\n", nt_errstr(nterror)));
 839     } else {
 840         if (EXTRACT_U_1(buf + 5))
 841             ND_PRINT((ndo, "SMBError = %s\n", smb_errstr(EXTRACT_U_1(buf + 5),
 842                       EXTRACT_LE_U_2(buf + 7))));
 843     }
 844
 845     smboffset = 32;
 846
 847     for (;;) {
 848         const char *f1, *f2;
 849         int wct;
 850         u_int bcc;
 851         int newsmboffset;
 852
 853         words = buf + smboffset;
 854         ND_TCHECK_1(words);
 855         wct = EXTRACT_U_1(words);
 856         data = words + 1 + wct * 2;
 857         maxwords = min(data, maxbuf);
 858
 859         if (request) {
 860             f1 = fn->descript.req_f1;
 861             f2 = fn->descript.req_f2;
 862         } else {
 863             f1 = fn->descript.rep_f1;
 864             f2 = fn->descript.rep_f2;
 865         }
 866
 867         if (fn->descript.fn)
 868             (*fn->descript.fn)(ndo, words, data, buf, maxbuf);
 869         else {
 870             if (wct) {
 871                 if (f1)
 872                     smb_fdata(ndo, words + 1, f1, words + 1 + wct * 2, unicodestr);
 873                 else {
 874                     int i;
 875                     int v;
 876
 877                     for (i = 0; words + 1 + 2 * i < maxwords; i++) {
 878                         ND_TCHECK_2(words + 1 + 2 * i);
 879                         v = EXTRACT_LE_U_2(words + 1 + 2 * i);
 880                         ND_PRINT((ndo, "smb_vwv[%d]=%d (0x%X)\n", i, v, v));
 881                     }
 882                 }
 883             }
 884
 885             ND_TCHECK_2(data);
 886             bcc = EXTRACT_LE_U_2(data);
 887             ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
 888             if (f2) {
 889                 if (bcc > 0)
 890                     smb_fdata(ndo, data + 2, f2, data + 2 + bcc, unicodestr);
 891             } else {
 892                 if (bcc > 0) {
 893                     ND_PRINT((ndo, "smb_buf[]=\n"));
 894                     smb_print_data(ndo, data + 2, min(bcc, PTR_DIFF(maxbuf, data + 2)));
 895                 }
 896             }
 897         }
 898
 899         if ((fn->flags & FLG_CHAIN) == 0)
 900             break;
 901         if (wct == 0)
 902             break;
 903         ND_TCHECK_1(words + 1);
 904         command = EXTRACT_U_1(words + 1);
 905         if (command == 0xFF)
 906             break;
 907         ND_TCHECK_2(words + 3);
 908         newsmboffset = EXTRACT_LE_U_2(words + 3);
 909
 910         fn = smbfind(command, smb_fns);
 911
 912         ND_PRINT((ndo, "\nSMB PACKET: %s (%s) (CHAINED)\n",
 913             fn->name, request ? "REQUEST" : "REPLY"));
 914         if (newsmboffset <= smboffset) {
 915             ND_PRINT((ndo, "Bad andX offset: %u <= %u\n", newsmboffset, smboffset));
 916             break;
 917         }
 918         smboffset = newsmboffset;
 919     }
 920
 921     ND_PRINT((ndo, "\n"));
 922     return;
 923 trunc:
 924     ND_PRINT((ndo, "%s", tstr));
 925 }
 926
 927
 928 /*
 929  * print a NBT packet received across tcp on port 139
 930  */
 931 void
 932 nbt_tcp_print(netdissect_options *ndo,
 933               const u_char *data, int length)
 934 {
 935     int caplen;
 936     int type;
 937     u_int nbt_len;
 938     const u_char *maxbuf;
 939
 940     if (length < 4)
 941         goto trunc;
 942     if (ndo->ndo_snapend < data)
 943         goto trunc;
 944     caplen = ndo->ndo_snapend - data;
 945     if (caplen < 4)
 946         goto trunc;
 947     maxbuf = data + caplen;
 948     type = EXTRACT_U_1(data);
 949     nbt_len = EXTRACT_BE_U_2(data + 2);
 950     length -= 4;
 951     caplen -= 4;
 952
 953     startbuf = data;
 954
 955     if (ndo->ndo_vflag < 2) {
 956         ND_PRINT((ndo, " NBT Session Packet: "));
 957         switch (type) {
 958         case 0x00:
 959             ND_PRINT((ndo, "Session Message"));
 960             break;
 961
 962         case 0x81:
 963             ND_PRINT((ndo, "Session Request"));
 964             break;
 965
 966         case 0x82:
 967             ND_PRINT((ndo, "Session Granted"));
 968             break;
 969
 970         case 0x83:
 971           {
 972             int ecode;
 973
 974             if (nbt_len < 4)
 975                 goto trunc;
 976             if (length < 4)
 977                 goto trunc;
 978             if (caplen < 4)
 979                 goto trunc;
 980             ecode = EXTRACT_U_1(data + 4);
 981
 982             ND_PRINT((ndo, "Session Reject, "));
 983             switch (ecode) {
 984             case 0x80:
 985                 ND_PRINT((ndo, "Not listening on called name"));
 986                 break;
 987             case 0x81:
 988                 ND_PRINT((ndo, "Not listening for calling name"));
 989                 break;
 990             case 0x82:
 991                 ND_PRINT((ndo, "Called name not present"));
 992                 break;
 993             case 0x83:
 994                 ND_PRINT((ndo, "Called name present, but insufficient resources"));
 995                 break;
 996             default:
 997                 ND_PRINT((ndo, "Unspecified error 0x%X", ecode));
 998                 break;
 999             }
1000           }
1001             break;
1002
1003         case 0x85:
1004             ND_PRINT((ndo, "Session Keepalive"));
1005             break;
1006
1007         default:
1008             data = smb_fdata(ndo, data, "Unknown packet type [rB]", maxbuf, 0);
1009             break;
1010         }
1011     } else {
1012         ND_PRINT((ndo, "\n>>> NBT Session Packet\n"));
1013         switch (type) {
1014         case 0x00:
1015             data = smb_fdata(ndo, data, "[P1]NBT Session Message\nFlags=[B]\nLength=[rd]\n",
1016                 data + 4, 0);
1017             if (data == NULL)
1018                 break;
1019             if (nbt_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1020                 if ((int)nbt_len > caplen) {
1021                     if ((int)nbt_len > length)
1022                         ND_PRINT((ndo, "WARNING: Packet is continued in later TCP segments\n"));
1023                     else
1024                         ND_PRINT((ndo, "WARNING: Short packet. Try increasing the snap length by %d\n",
1025                             nbt_len - caplen));
1026                 }
1027                 print_smb(ndo, data, maxbuf > data + nbt_len ? data + nbt_len : maxbuf);
1028             } else
1029                 ND_PRINT((ndo, "Session packet:(raw data or continuation?)\n"));
1030             break;
1031
1032         case 0x81:
1033             data = smb_fdata(ndo, data,
1034                 "[P1]NBT Session Request\nFlags=[B]\nLength=[rd]\nDestination=[n1]\nSource=[n1]\n",
1035                 maxbuf, 0);
1036             break;
1037
1038         case 0x82:
1039             data = smb_fdata(ndo, data, "[P1]NBT Session Granted\nFlags=[B]\nLength=[rd]\n", maxbuf, 0);
1040             break;
1041
1042         case 0x83:
1043           {
1044             const u_char *origdata;
1045             int ecode;
1046
1047             origdata = data;
1048             data = smb_fdata(ndo, data, "[P1]NBT SessionReject\nFlags=[B]\nLength=[rd]\nReason=[B]\n",
1049                 maxbuf, 0);
1050             if (data == NULL)
1051                 break;
1052             if (nbt_len >= 1 && caplen >= 1) {
1053                 ecode = EXTRACT_U_1(origdata + 4);
1054                 switch (ecode) {
1055                 case 0x80:
1056                     ND_PRINT((ndo, "Not listening on called name\n"));
1057                     break;
1058                 case 0x81:
1059                     ND_PRINT((ndo, "Not listening for calling name\n"));
1060                     break;
1061                 case 0x82:
1062                     ND_PRINT((ndo, "Called name not present\n"));
1063                     break;
1064                 case 0x83:
1065                     ND_PRINT((ndo, "Called name present, but insufficient resources\n"));
1066                     break;
1067                 default:
1068                     ND_PRINT((ndo, "Unspecified error 0x%X\n", ecode));
1069                     break;
1070                 }
1071             }
1072           }
1073             break;
1074
1075         case 0x85:
1076             data = smb_fdata(ndo, data, "[P1]NBT Session Keepalive\nFlags=[B]\nLength=[rd]\n", maxbuf, 0);
1077             break;
1078
1079         default:
1080             data = smb_fdata(ndo, data, "NBT - Unknown packet type\nType=[B]\n", maxbuf, 0);
1081             break;
1082         }
1083         ND_PRINT((ndo, "\n"));
1084     }
1085     return;
1086 trunc:
1087     ND_PRINT((ndo, "%s", tstr));
1088 }
1089
1090 static const struct tok opcode_str[] = {
1091         { 0,  "QUERY"                   },
1092         { 5,  "REGISTRATION"            },
1093         { 6,  "RELEASE"                 },
1094         { 7,  "WACK"                    },
1095         { 8,  "REFRESH(8)"              },
1096         { 9,  "REFRESH"                 },
1097         { 15, "MULTIHOMED REGISTRATION" },
1098         { 0, NULL }
1099 };
1100
1101 /*
1102  * print a NBT packet received across udp on port 137
1103  */
1104 void
1105 nbt_udp137_print(netdissect_options *ndo,
1106                  const u_char *data, int length)
1107 {
1108     const u_char *maxbuf = data + length;
1109     int name_trn_id, response, opcode, nm_flags, rcode;
1110     int qdcount, ancount, nscount, arcount;
1111     const u_char *p;
1112     int total, i;
1113
1114     ND_TCHECK_2(data + 10);
1115     name_trn_id = EXTRACT_BE_U_2(data);
1116     response = (EXTRACT_U_1(data + 2) >> 7);
1117     opcode = (EXTRACT_U_1(data + 2) >> 3) & 0xF;
1118     nm_flags = ((EXTRACT_U_1(data + 2) & 0x7) << 4) + (EXTRACT_U_1(data + 3) >> 4);
1119     rcode = EXTRACT_U_1(data + 3) & 0xF;
1120     qdcount = EXTRACT_BE_U_2(data + 4);
1121     ancount = EXTRACT_BE_U_2(data + 6);
1122     nscount = EXTRACT_BE_U_2(data + 8);
1123     arcount = EXTRACT_BE_U_2(data + 10);
1124     startbuf = data;
1125
1126     if (maxbuf <= data)
1127         return;
1128
1129     if (ndo->ndo_vflag > 1)
1130         ND_PRINT((ndo, "\n>>> "));
1131
1132     ND_PRINT((ndo, "NBT UDP PACKET(137): %s", tok2str(opcode_str, "OPUNKNOWN", opcode)));
1133     if (response) {
1134         ND_PRINT((ndo, "; %s", rcode ? "NEGATIVE" : "POSITIVE"));
1135     }
1136     ND_PRINT((ndo, "; %s; %s", response ? "RESPONSE" : "REQUEST",
1137               (nm_flags & 1) ? "BROADCAST" : "UNICAST"));
1138
1139     if (ndo->ndo_vflag < 2)
1140         return;
1141
1142     ND_PRINT((ndo, "\nTrnID=0x%X\nOpCode=%d\nNmFlags=0x%X\nRcode=%d\nQueryCount=%d\nAnswerCount=%d\nAuthorityCount=%d\nAddressRecCount=%d\n",
1143         name_trn_id, opcode, nm_flags, rcode, qdcount, ancount, nscount,
1144         arcount));
1145
1146     p = data + 12;
1147
1148     total = ancount + nscount + arcount;
1149
1150     if (qdcount > 100 || total > 100) {
1151         ND_PRINT((ndo, "Corrupt packet??\n"));
1152         return;
1153     }
1154
1155     if (qdcount) {
1156         ND_PRINT((ndo, "QuestionRecords:\n"));
1157         for (i = 0; i < qdcount; i++) {
1158             p = smb_fdata(ndo, p,
1159                 "|Name=[n1]\nQuestionType=[rw]\nQuestionClass=[rw]\n#",
1160                 maxbuf, 0);
1161             if (p == NULL)
1162                 goto out;
1163         }
1164     }
1165
1166     if (total) {
1167         ND_PRINT((ndo, "\nResourceRecords:\n"));
1168         for (i = 0; i < total; i++) {
1169             int rdlen;
1170             int restype;
1171
1172             p = smb_fdata(ndo, p, "Name=[n1]\n#", maxbuf, 0);
1173             if (p == NULL)
1174                 goto out;
1175             ND_TCHECK_2(p);
1176             restype = EXTRACT_BE_U_2(p);
1177             p = smb_fdata(ndo, p, "ResType=[rw]\nResClass=[rw]\nTTL=[rD]\n", p + 8, 0);
1178             if (p == NULL)
1179                 goto out;
1180             ND_TCHECK_2(p);
1181             rdlen = EXTRACT_BE_U_2(p);
1182             ND_PRINT((ndo, "ResourceLength=%d\nResourceData=\n", rdlen));
1183             p += 2;
1184             if (rdlen == 6) {
1185                 p = smb_fdata(ndo, p, "AddrType=[rw]\nAddress=[b.b.b.b]\n", p + rdlen, 0);
1186                 if (p == NULL)
1187                     goto out;
1188             } else {
1189                 if (restype == 0x21) {
1190                     int numnames;
1191
1192                     ND_TCHECK_1(p);
1193                     numnames = EXTRACT_U_1(p);
1194                     p = smb_fdata(ndo, p, "NumNames=[B]\n", p + 1, 0);
1195                     if (p == NULL)
1196                         goto out;
1197                     while (numnames--) {
1198                         p = smb_fdata(ndo, p, "Name=[n2]\t#", maxbuf, 0);
1199                         if (p == NULL)
1200                             goto out;
1201                         ND_TCHECK_1(p);
1202                         if (EXTRACT_U_1(p) & 0x80)
1203                             ND_PRINT((ndo, "<GROUP> "));
1204                         switch (EXTRACT_U_1(p) & 0x60) {
1205                         case 0x00: ND_PRINT((ndo, "B ")); break;
1206                         case 0x20: ND_PRINT((ndo, "P ")); break;
1207                         case 0x40: ND_PRINT((ndo, "M ")); break;
1208                         case 0x60: ND_PRINT((ndo, "_ ")); break;
1209                         }
1210                         if (EXTRACT_U_1(p) & 0x10)
1211                             ND_PRINT((ndo, "<DEREGISTERING> "));
1212                         if (EXTRACT_U_1(p) & 0x08)
1213                             ND_PRINT((ndo, "<CONFLICT> "));
1214                         if (EXTRACT_U_1(p) & 0x04)
1215                             ND_PRINT((ndo, "<ACTIVE> "));
1216                         if (EXTRACT_U_1(p) & 0x02)
1217                             ND_PRINT((ndo, "<PERMANENT> "));
1218                         ND_PRINT((ndo, "\n"));
1219                         p += 2;
1220                     }
1221                 } else {
1222                     smb_print_data(ndo, p, min(rdlen, length - (p - data)));
1223                     p += rdlen;
1224                 }
1225             }
1226         }
1227     }
1228
1229     if (p < maxbuf)
1230         smb_fdata(ndo, p, "AdditionalData:\n", maxbuf, 0);
1231
1232 out:
1233     ND_PRINT((ndo, "\n"));
1234     return;
1235 trunc:
1236     ND_PRINT((ndo, "%s", tstr));
1237 }
1238
1239 /*
1240  * Print an SMB-over-TCP packet received across tcp on port 445
1241  */
1242 void
1243 smb_tcp_print(netdissect_options *ndo,
1244               const u_char * data, int length)
1245 {
1246     int caplen;
1247     u_int smb_len;
1248     const u_char *maxbuf;
1249
1250     if (length < 4)
1251         goto trunc;
1252     if (ndo->ndo_snapend < data)
1253         goto trunc;
1254     caplen = ndo->ndo_snapend - data;
1255     if (caplen < 4)
1256         goto trunc;
1257     maxbuf = data + caplen;
1258     smb_len = EXTRACT_BE_U_3(data + 1);
1259     length -= 4;
1260     caplen -= 4;
1261
1262     startbuf = data;
1263     data += 4;
1264
1265     if (smb_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1266         if ((int)smb_len > caplen) {
1267             if ((int)smb_len > length)
1268                 ND_PRINT((ndo, " WARNING: Packet is continued in later TCP segments\n"));
1269             else
1270                 ND_PRINT((ndo, " WARNING: Short packet. Try increasing the snap length by %d\n",
1271                     smb_len - caplen));
1272         } else
1273             ND_PRINT((ndo, " "));
1274         print_smb(ndo, data, maxbuf > data + smb_len ? data + smb_len : maxbuf);
1275     } else
1276         ND_PRINT((ndo, " SMB-over-TCP packet:(raw data or continuation?)\n"));
1277     return;
1278 trunc:
1279     ND_PRINT((ndo, "%s", tstr));
1280 }
1281
1282 /*
1283  * print a NBT packet received across udp on port 138
1284  */
1285 void
1286 nbt_udp138_print(netdissect_options *ndo,
1287                  const u_char *data, int length)
1288 {
1289     const u_char *maxbuf = data + length;
1290
1291     if (maxbuf > ndo->ndo_snapend)
1292         maxbuf = ndo->ndo_snapend;
1293     if (maxbuf <= data)
1294         return;
1295     startbuf = data;
1296
1297     if (ndo->ndo_vflag < 2) {
1298         ND_PRINT((ndo, "NBT UDP PACKET(138)"));
1299         return;
1300     }
1301
1302     data = smb_fdata(ndo, data,
1303         "\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#",
1304         maxbuf, 0);
1305
1306     if (data != NULL) {
1307         /* If there isn't enough data for "\377SMB", don't check for it. */
1308         if ((data + 3) >= maxbuf)
1309             goto out;
1310
1311         if (memcmp(data, "\377SMB",4) == 0)
1312             print_smb(ndo, data, maxbuf);
1313     }
1314 out:
1315     ND_PRINT((ndo, "\n"));
1316 }
1317
1318
1319 /*
1320    print netbeui frames
1321 */
1322 static struct nbf_strings {
1323         const char      *name;
1324         const char      *nonverbose;
1325         const char      *verbose;
1326 } nbf_strings[0x20] = {
1327         { "Add Group Name Query", ", [P23]Name to add=[n2]#",
1328           "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1329         { "Add Name Query", ", [P23]Name to add=[n2]#",
1330           "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1331         { "Name In Conflict", NULL, NULL },
1332         { "Status Query", NULL, NULL },
1333         { NULL, NULL, NULL },   /* not used */
1334         { NULL, NULL, NULL },   /* not used */
1335         { NULL, NULL, NULL },   /* not used */
1336         { "Terminate Trace", NULL, NULL },
1337         { "Datagram", NULL,
1338           "[P7]Destination=[n2]\nSource=[n2]\n" },
1339         { "Broadcast Datagram", NULL,
1340           "[P7]Destination=[n2]\nSource=[n2]\n" },
1341         { "Name Query", ", [P7]Name=[n2]#",
1342           "[P1]SessionNumber=[B]\nNameType=[B][P2]\nResponseCorrelator=[w]\nName=[n2]\nName of sender=[n2]\n" },
1343         { NULL, NULL, NULL },   /* not used */
1344         { NULL, NULL, NULL },   /* not used */
1345         { "Add Name Response", ", [P1]GroupName=[w] [P4]Destination=[n2] Source=[n2]#",
1346           "AddNameInProcess=[B]\nGroupName=[w]\nTransmitCorrelator=[w][P2]\nDestination=[n2]\nSource=[n2]\n" },
1347         { "Name Recognized", NULL,
1348           "[P1]Data2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nDestination=[n2]\nSource=[n2]\n" },
1349         { "Status Response", NULL, NULL },
1350         { NULL, NULL, NULL },   /* not used */
1351         { NULL, NULL, NULL },   /* not used */
1352         { NULL, NULL, NULL },   /* not used */
1353         { "Terminate Trace", NULL, NULL },
1354         { "Data Ack", NULL,
1355           "[P3]TransmitCorrelator=[w][P2]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1356         { "Data First/Middle", NULL,
1357           "Flags=[{RECEIVE_CONTINUE|NO_ACK||PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1358         { "Data Only/Last", NULL,
1359           "Flags=[{|NO_ACK|PIGGYBACK_ACK_ALLOWED|PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1360         { "Session Confirm", NULL,
1361           "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1362         { "Session End", NULL,
1363           "[P1]Data2=[w][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1364         { "Session Initialize", NULL,
1365           "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1366         { "No Receive", NULL,
1367           "Flags=[{|SEND_NO_ACK}]\nDataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1368         { "Receive Outstanding", NULL,
1369           "[P1]DataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1370         { "Receive Continue", NULL,
1371           "[P2]TransmitCorrelator=[w]\n[P2]RemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1372         { NULL, NULL, NULL },   /* not used */
1373         { NULL, NULL, NULL },   /* not used */
1374         { "Session Alive", NULL, NULL }
1375 };
1376
1377 void
1378 netbeui_print(netdissect_options *ndo,
1379               u_short control, const u_char *data, int length)
1380 {
1381     const u_char *maxbuf = data + length;
1382     int len;
1383     int command;
1384     const u_char *data2;
1385     int is_truncated = 0;
1386
1387     if (maxbuf > ndo->ndo_snapend)
1388         maxbuf = ndo->ndo_snapend;
1389     ND_TCHECK_1(data + 4);
1390     len = EXTRACT_LE_U_2(data);
1391     command = EXTRACT_U_1(data + 4);
1392     data2 = data + len;
1393     if (data2 >= maxbuf) {
1394         data2 = maxbuf;
1395         is_truncated = 1;
1396     }
1397
1398     startbuf = data;
1399
1400     if (ndo->ndo_vflag < 2) {
1401         ND_PRINT((ndo, "NBF Packet: "));
1402         data = smb_fdata(ndo, data, "[P5]#", maxbuf, 0);
1403     } else {
1404         ND_PRINT((ndo, "\n>>> NBF Packet\nType=0x%X ", control));
1405         data = smb_fdata(ndo, data, "Length=[d] Signature=[w] Command=[B]\n#", maxbuf, 0);
1406     }
1407     if (data == NULL)
1408         goto out;
1409
1410     if (command > 0x1f || nbf_strings[command].name == NULL) {
1411         if (ndo->ndo_vflag < 2)
1412             data = smb_fdata(ndo, data, "Unknown NBF Command#", data2, 0);
1413         else
1414             data = smb_fdata(ndo, data, "Unknown NBF Command\n", data2, 0);
1415     } else {
1416         if (ndo->ndo_vflag < 2) {
1417             ND_PRINT((ndo, "%s", nbf_strings[command].name));
1418             if (nbf_strings[command].nonverbose != NULL)
1419                 data = smb_fdata(ndo, data, nbf_strings[command].nonverbose, data2, 0);
1420         } else {
1421             ND_PRINT((ndo, "%s:\n", nbf_strings[command].name));
1422             if (nbf_strings[command].verbose != NULL)
1423                 data = smb_fdata(ndo, data, nbf_strings[command].verbose, data2, 0);
1424             else
1425                 ND_PRINT((ndo, "\n"));
1426         }
1427     }
1428
1429     if (ndo->ndo_vflag < 2)
1430         return;
1431
1432     if (data == NULL)
1433         goto out;
1434
1435     if (is_truncated) {
1436         /* data2 was past the end of the buffer */
1437         goto out;
1438     }
1439
1440     /* If this isn't a command that would contain an SMB message, quit. */
1441     if (command != 0x08 && command != 0x09 && command != 0x15 &&
1442         command != 0x16)
1443         goto out;
1444
1445     /* If there isn't enough data for "\377SMB", don't look for it. */
1446     if ((data2 + 3) >= maxbuf)
1447         goto out;
1448
1449     if (memcmp(data2, "\377SMB",4) == 0)
1450         print_smb(ndo, data2, maxbuf);
1451     else {
1452         int i;
1453         for (i = 0; i < 128; i++) {
1454             if ((data2 + i + 3) >= maxbuf)
1455                 break;
1456             if (memcmp(data2 + i, "\377SMB", 4) == 0) {
1457                 ND_PRINT((ndo, "found SMB packet at %d\n", i));
1458                 print_smb(ndo, data2 + i, maxbuf);
1459                 break;
1460             }
1461         }
1462     }
1463
1464 out:
1465     ND_PRINT((ndo, "\n"));
1466     return;
1467 trunc:
1468     ND_PRINT((ndo, "%s", tstr));
1469 }
1470
1471
1472 /*
1473  * print IPX-Netbios frames
1474  */
1475 void
1476 ipx_netbios_print(netdissect_options *ndo,
1477                   const u_char *data, u_int length)
1478 {
1479     /*
1480      * this is a hack till I work out how to parse the rest of the
1481      * NetBIOS-over-IPX stuff
1482      */
1483     int i;
1484     const u_char *maxbuf;
1485
1486     maxbuf = data + length;
1487     /* Don't go past the end of the captured data in the packet. */
1488     if (maxbuf > ndo->ndo_snapend)
1489         maxbuf = ndo->ndo_snapend;
1490     startbuf = data;
1491     for (i = 0; i < 128; i++) {
1492         if ((data + i + 4) > maxbuf)
1493             break;
1494         if (memcmp(data + i, "\377SMB", 4) == 0) {
1495             smb_fdata(ndo, data, "\n>>> IPX transport ", data + i, 0);
1496             print_smb(ndo, data + i, maxbuf);
1497             ND_PRINT((ndo, "\n"));
1498             break;
1499         }
1500     }
1501     if (i == 128)
1502         smb_fdata(ndo, data, "\n>>> Unknown IPX ", maxbuf, 0);
1503 }