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 #define MAILSLOT_BROWSE_STR "\\MAILSLOT\\BROWSE"
 375         ND_TCHECK2(*(data1 + 2), strlen(MAILSLOT_BROWSE_STR) + 1);
 376         if (strcmp((const char *)(data1 + 2), MAILSLOT_BROWSE_STR) == 0) {
 377             print_browse(ndo, param, paramlen, data, datalen);
 378             return;
 379         }
 380 #undef MAILSLOT_BROWSE_STR
 381
 382 #define PIPE_LANMAN_STR "\\PIPE\\LANMAN"
 383         ND_TCHECK2(*(data1 + 2), strlen(PIPE_LANMAN_STR) + 1);
 384         if (strcmp((const char *)(data1 + 2), PIPE_LANMAN_STR) == 0) {
 385             print_ipc(ndo, param, paramlen, data, datalen);
 386             return;
 387         }
 388 #undef PIPE_LANMAN_STR
 389
 390         if (paramlen)
 391             smb_fdata(ndo, param, f3, min(param + paramlen, maxbuf), unicodestr);
 392         if (datalen)
 393             smb_fdata(ndo, data, f4, min(data + datalen, maxbuf), unicodestr);
 394     }
 395     return;
 396 trunc:
 397     ND_PRINT((ndo, "%s", tstr));
 398 }
 399
 400
 401 static void
 402 print_negprot(netdissect_options *ndo,
 403               const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 404 {
 405     u_int wct, bcc;
 406     const char *f1 = NULL, *f2 = NULL;
 407
 408     ND_TCHECK(words[0]);
 409     wct = words[0];
 410     if (request)
 411         f2 = "*|Dialect=[Y]\n";
 412     else {
 413         if (wct == 1)
 414             f1 = "Core Protocol\nDialectIndex=[d]";
 415         else if (wct == 17)
 416             f1 = "NT1 Protocol\nDialectIndex=[d]\nSecMode=[B]\nMaxMux=[d]\nNumVcs=[d]\nMaxBuffer=[D]\nRawSize=[D]\nSessionKey=[W]\nCapabilities=[W]\nServerTime=[T3]TimeZone=[d]\nCryptKey=";
 417         else if (wct == 13)
 418             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=";
 419     }
 420
 421     if (f1)
 422         smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
 423             unicodestr);
 424     else
 425         smb_print_data(ndo, words + 1, min(wct * 2, PTR_DIFF(maxbuf, words + 1)));
 426
 427     ND_TCHECK2(*data, 2);
 428     bcc = EXTRACT_LE_16BITS(data);
 429     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
 430     if (bcc > 0) {
 431         if (f2)
 432             smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_16BITS(data),
 433                 maxbuf), unicodestr);
 434         else
 435             smb_print_data(ndo, data + 2, min(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
 436     }
 437     return;
 438 trunc:
 439     ND_PRINT((ndo, "%s", tstr));
 440 }
 441
 442 static void
 443 print_sesssetup(netdissect_options *ndo,
 444                 const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 445 {
 446     u_int wct, bcc;
 447     const char *f1 = NULL, *f2 = NULL;
 448
 449     ND_TCHECK(words[0]);
 450     wct = words[0];
 451     if (request) {
 452         if (wct == 10)
 453             f1 = "Com2=[w]\nOff2=[d]\nBufSize=[d]\nMpxMax=[d]\nVcNum=[d]\nSessionKey=[W]\nPassLen=[d]\nCryptLen=[d]\nCryptOff=[d]\nPass&Name=\n";
 454         else
 455             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";
 456     } else {
 457         if (wct == 3) {
 458             f1 = "Com2=[w]\nOff2=[d]\nAction=[w]\n";
 459         } else if (wct == 13) {
 460             f1 = "Com2=[B]\nRes=[B]\nOff2=[d]\nAction=[w]\n";
 461             f2 = "NativeOS=[S]\nNativeLanMan=[S]\nPrimaryDomain=[S]\n";
 462         }
 463     }
 464
 465     if (f1)
 466         smb_fdata(ndo, words + 1, f1, min(words + 1 + wct * 2, maxbuf),
 467             unicodestr);
 468     else
 469         smb_print_data(ndo, words + 1, min(wct * 2, PTR_DIFF(maxbuf, words + 1)));
 470
 471     ND_TCHECK2(*data, 2);
 472     bcc = EXTRACT_LE_16BITS(data);
 473     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
 474     if (bcc > 0) {
 475         if (f2)
 476             smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_16BITS(data),
 477                 maxbuf), unicodestr);
 478         else
 479             smb_print_data(ndo, data + 2, min(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
 480     }
 481     return;
 482 trunc:
 483     ND_PRINT((ndo, "%s", tstr));
 484 }
 485
 486 static void
 487 print_lockingandx(netdissect_options *ndo,
 488                   const u_char *words, const u_char *data, const u_char *buf _U_, const u_char *maxbuf)
 489 {
 490     u_int wct, bcc;
 491     const u_char *maxwords;
 492     const char *f1 = NULL, *f2 = NULL;
 493
 494     ND_TCHECK(words[0]);
 495     wct = words[0];
 496     if (request) {
 497         f1 = "Com2=[w]\nOff2=[d]\nHandle=[d]\nLockType=[w]\nTimeOut=[D]\nUnlockCount=[d]\nLockCount=[d]\n";
 498         ND_TCHECK(words[7]);
 499         if (words[7] & 0x10)
 500             f2 = "*Process=[d]\n[P2]Offset=[M]\nLength=[M]\n";
 501         else
 502             f2 = "*Process=[d]\nOffset=[D]\nLength=[D]\n";
 503     } else {
 504         f1 = "Com2=[w]\nOff2=[d]\n";
 505     }
 506
 507     maxwords = min(words + 1 + wct * 2, maxbuf);
 508     if (wct)
 509         smb_fdata(ndo, words + 1, f1, maxwords, unicodestr);
 510
 511     ND_TCHECK2(*data, 2);
 512     bcc = EXTRACT_LE_16BITS(data);
 513     ND_PRINT((ndo, "smb_bcc=%u\n", bcc));
 514     if (bcc > 0) {
 515         if (f2)
 516             smb_fdata(ndo, data + 2, f2, min(data + 2 + EXTRACT_LE_16BITS(data),
 517                 maxbuf), unicodestr);
 518         else
 519             smb_print_data(ndo, data + 2, min(EXTRACT_LE_16BITS(data), PTR_DIFF(maxbuf, data + 2)));
 520     }
 521     return;
 522 trunc:
 523     ND_PRINT((ndo, "%s", tstr));
 524 }
 525
 526
 527 static const struct smbfns smb_fns[] = {
 528     { -1, "SMBunknown", 0, DEFDESCRIPT },
 529
 530     { SMBtcon, "SMBtcon", 0,
 531         { NULL, "Path=[Z]\nPassword=[Z]\nDevice=[Z]\n",
 532           "MaxXmit=[d]\nTreeId=[d]\n", NULL,
 533           NULL } },
 534
 535     { SMBtdis, "SMBtdis", 0, DEFDESCRIPT },
 536     { SMBexit,  "SMBexit", 0, DEFDESCRIPT },
 537     { SMBioctl, "SMBioctl", 0, DEFDESCRIPT },
 538
 539     { SMBecho, "SMBecho", 0,
 540         { "ReverbCount=[d]\n", NULL,
 541           "SequenceNum=[d]\n", NULL,
 542           NULL } },
 543
 544     { SMBulogoffX, "SMBulogoffX", FLG_CHAIN, DEFDESCRIPT },
 545
 546     { SMBgetatr, "SMBgetatr", 0,
 547         { NULL, "Path=[Z]\n",
 548           "Attribute=[A]\nTime=[T2]Size=[D]\nRes=([w,w,w,w,w])\n", NULL,
 549           NULL } },
 550
 551     { SMBsetatr, "SMBsetatr", 0,
 552         { "Attribute=[A]\nTime=[T2]Res=([w,w,w,w,w])\n", "Path=[Z]\n",
 553           NULL, NULL, NULL } },
 554
 555     { SMBchkpth, "SMBchkpth", 0,
 556        { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 557
 558     { SMBsearch, "SMBsearch", 0,
 559         { "Count=[d]\nAttrib=[A]\n",
 560           "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\nRes2=[W]\n",
 561           "Count=[d]\n",
 562           "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",
 563           NULL } },
 564
 565     { SMBopen, "SMBopen", 0,
 566         { "Mode=[w]\nAttribute=[A]\n", "Path=[Z]\n",
 567           "Handle=[d]\nOAttrib=[A]\nTime=[T2]Size=[D]\nAccess=[w]\n",
 568           NULL, NULL } },
 569
 570     { SMBcreate, "SMBcreate", 0,
 571         { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[d]\n", NULL, NULL } },
 572
 573     { SMBmknew, "SMBmknew", 0,
 574         { "Attrib=[A]\nTime=[T2]", "Path=[Z]\n", "Handle=[d]\n", NULL, NULL } },
 575
 576     { SMBunlink, "SMBunlink", 0,
 577         { "Attrib=[A]\n", "Path=[Z]\n", NULL, NULL, NULL } },
 578
 579     { SMBread, "SMBread", 0,
 580         { "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
 581           "Count=[d]\nRes=([w,w,w,w])\n", NULL, NULL } },
 582
 583     { SMBwrite, "SMBwrite", 0,
 584         { "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
 585           "Count=[d]\n", NULL, NULL } },
 586
 587     { SMBclose, "SMBclose", 0,
 588         { "Handle=[d]\nTime=[T2]", NULL, NULL, NULL, NULL } },
 589
 590     { SMBmkdir, "SMBmkdir", 0,
 591         { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 592
 593     { SMBrmdir, "SMBrmdir", 0,
 594         { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 595
 596     { SMBdskattr, "SMBdskattr", 0,
 597         { NULL, NULL,
 598           "TotalUnits=[d]\nBlocksPerUnit=[d]\nBlockSize=[d]\nFreeUnits=[d]\nMedia=[w]\n",
 599           NULL, NULL } },
 600
 601     { SMBmv, "SMBmv", 0,
 602         { "Attrib=[A]\n", "OldPath=[Z]\nNewPath=[Z]\n", NULL, NULL, NULL } },
 603
 604     /*
 605      * this is a Pathworks specific call, allowing the
 606      * changing of the root path
 607      */
 608     { pSETDIR, "SMBsetdir", 0, { NULL, "Path=[Z]\n", NULL, NULL, NULL } },
 609
 610     { SMBlseek, "SMBlseek", 0,
 611         { "Handle=[d]\nMode=[w]\nOffset=[D]\n", "Offset=[D]\n", NULL, NULL, NULL } },
 612
 613     { SMBflush, "SMBflush", 0, { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
 614
 615     { SMBsplopen, "SMBsplopen", 0,
 616         { "SetupLen=[d]\nMode=[w]\n", "Ident=[Z]\n", "Handle=[d]\n",
 617           NULL, NULL } },
 618
 619     { SMBsplclose, "SMBsplclose", 0,
 620         { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
 621
 622     { SMBsplretq, "SMBsplretq", 0,
 623         { "MaxCount=[d]\nStartIndex=[d]\n", NULL,
 624           "Count=[d]\nIndex=[d]\n",
 625           "*Time=[T2]Status=[B]\nJobID=[d]\nSize=[D]\nRes=[B]Name=[s16]\n",
 626           NULL } },
 627
 628     { SMBsplwr, "SMBsplwr", 0,
 629         { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
 630
 631     { SMBlock, "SMBlock", 0,
 632         { "Handle=[d]\nCount=[D]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
 633
 634     { SMBunlock, "SMBunlock", 0,
 635         { "Handle=[d]\nCount=[D]\nOffset=[D]\n", NULL, NULL, NULL, NULL } },
 636
 637     /* CORE+ PROTOCOL FOLLOWS */
 638
 639     { SMBreadbraw, "SMBreadbraw", 0,
 640         { "Handle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nRes=[d]\n",
 641           NULL, NULL, NULL, NULL } },
 642
 643     { SMBwritebraw, "SMBwritebraw", 0,
 644         { "Handle=[d]\nTotalCount=[d]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\n|DataSize=[d]\nDataOff=[d]\n",
 645           NULL, "WriteRawAck", NULL, NULL } },
 646
 647     { SMBwritec, "SMBwritec", 0,
 648         { NULL, NULL, "Count=[d]\n", NULL, NULL } },
 649
 650     { SMBwriteclose, "SMBwriteclose", 0,
 651         { "Handle=[d]\nCount=[d]\nOffset=[D]\nTime=[T2]Res=([w,w,w,w,w,w])",
 652           NULL, "Count=[d]\n", NULL, NULL } },
 653
 654     { SMBlockread, "SMBlockread", 0,
 655         { "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
 656           "Count=[d]\nRes=([w,w,w,w])\n", NULL, NULL } },
 657
 658     { SMBwriteunlock, "SMBwriteunlock", 0,
 659         { "Handle=[d]\nByteCount=[d]\nOffset=[D]\nCountLeft=[d]\n", NULL,
 660           "Count=[d]\n", NULL, NULL } },
 661
 662     { SMBreadBmpx, "SMBreadBmpx", 0,
 663         { "Handle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nRes=[w]\n",
 664           NULL,
 665           "Offset=[D]\nTotCount=[d]\nRemaining=[d]\nRes=([w,w])\nDataSize=[d]\nDataOff=[d]\n",
 666           NULL, NULL } },
 667
 668     { SMBwriteBmpx, "SMBwriteBmpx", 0,
 669         { "Handle=[d]\nTotCount=[d]\nRes=[w]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nRes2=[W]\nDataSize=[d]\nDataOff=[d]\n", NULL,
 670           "Remaining=[d]\n", NULL, NULL } },
 671
 672     { SMBwriteBs, "SMBwriteBs", 0,
 673         { "Handle=[d]\nTotCount=[d]\nOffset=[D]\nRes=[W]\nDataSize=[d]\nDataOff=[d]\n",
 674           NULL, "Count=[d]\n", NULL, NULL } },
 675
 676     { SMBsetattrE, "SMBsetattrE", 0,
 677         { "Handle=[d]\nCreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]", NULL,
 678           NULL, NULL, NULL } },
 679
 680     { SMBgetattrE, "SMBgetattrE", 0,
 681         { "Handle=[d]\n", NULL,
 682           "CreationTime=[T2]AccessTime=[T2]ModifyTime=[T2]Size=[D]\nAllocSize=[D]\nAttribute=[A]\n",
 683           NULL, NULL } },
 684
 685     { SMBtranss, "SMBtranss", 0, DEFDESCRIPT },
 686     { SMBioctls, "SMBioctls", 0, DEFDESCRIPT },
 687
 688     { SMBcopy, "SMBcopy", 0,
 689         { "TreeID2=[d]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
 690           "CopyCount=[d]\n",  "|ErrStr=[S]\n",  NULL } },
 691
 692     { SMBmove, "SMBmove", 0,
 693         { "TreeID2=[d]\nOFun=[w]\nFlags=[w]\n", "Path=[S]\nNewPath=[S]\n",
 694           "MoveCount=[d]\n",  "|ErrStr=[S]\n",  NULL } },
 695
 696     { SMBopenX, "SMBopenX", FLG_CHAIN,
 697         { "Com2=[w]\nOff2=[d]\nFlags=[w]\nMode=[w]\nSearchAttrib=[A]\nAttrib=[A]\nTime=[T2]OFun=[w]\nSize=[D]\nTimeOut=[D]\nRes=[W]\n",
 698           "Path=[S]\n",
 699           "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",
 700           NULL, NULL } },
 701
 702     { SMBreadX, "SMBreadX", FLG_CHAIN,
 703         { "Com2=[w]\nOff2=[d]\nHandle=[d]\nOffset=[D]\nMaxCount=[d]\nMinCount=[d]\nTimeOut=[D]\nCountLeft=[d]\n",
 704           NULL,
 705           "Com2=[w]\nOff2=[d]\nRemaining=[d]\nRes=[W]\nDataSize=[d]\nDataOff=[d]\nRes=([w,w,w,w])\n",
 706           NULL, NULL } },
 707
 708     { SMBwriteX, "SMBwriteX", FLG_CHAIN,
 709         { "Com2=[w]\nOff2=[d]\nHandle=[d]\nOffset=[D]\nTimeOut=[D]\nWMode=[w]\nCountLeft=[d]\nRes=[w]\nDataSize=[d]\nDataOff=[d]\n",
 710           NULL,
 711           "Com2=[w]\nOff2=[d]\nCount=[d]\nRemaining=[d]\nRes=[W]\n",
 712           NULL, NULL } },
 713
 714     { SMBffirst, "SMBffirst", 0,
 715         { "Count=[d]\nAttrib=[A]\n",
 716           "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
 717           "Count=[d]\n",
 718           "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",
 719           NULL } },
 720
 721     { SMBfunique, "SMBfunique", 0,
 722         { "Count=[d]\nAttrib=[A]\n",
 723           "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
 724           "Count=[d]\n",
 725           "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",
 726           NULL } },
 727
 728     { SMBfclose, "SMBfclose", 0,
 729         { "Count=[d]\nAttrib=[A]\n",
 730           "Path=[Z]\nBlkType=[B]\nBlkLen=[d]\n|Res1=[B]\nMask=[s11]\nSrv1=[B]\nDirIndex=[d]\nSrv2=[w]\n",
 731           "Count=[d]\n",
 732           "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",
 733           NULL } },
 734
 735     { SMBfindnclose, "SMBfindnclose", 0,
 736         { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
 737
 738     { SMBfindclose, "SMBfindclose", 0,
 739         { "Handle=[d]\n", NULL, NULL, NULL, NULL } },
 740
 741     { SMBsends, "SMBsends", 0,
 742         { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
 743
 744     { SMBsendstrt, "SMBsendstrt", 0,
 745         { NULL, "Source=[Z]\nDest=[Z]\n", "GroupID=[d]\n", NULL, NULL } },
 746
 747     { SMBsendend, "SMBsendend", 0,
 748         { "GroupID=[d]\n", NULL, NULL, NULL, NULL } },
 749
 750     { SMBsendtxt, "SMBsendtxt", 0,
 751         { "GroupID=[d]\n", NULL, NULL, NULL, NULL } },
 752
 753     { SMBsendb, "SMBsendb", 0,
 754         { NULL, "Source=[Z]\nDest=[Z]\n", NULL, NULL, NULL } },
 755
 756     { SMBfwdname, "SMBfwdname", 0, DEFDESCRIPT },
 757     { SMBcancelf, "SMBcancelf", 0, DEFDESCRIPT },
 758     { SMBgetmac, "SMBgetmac", 0, DEFDESCRIPT },
 759
 760     { SMBnegprot, "SMBnegprot", 0,
 761         { NULL, NULL, NULL, NULL, print_negprot } },
 762
 763     { SMBsesssetupX, "SMBsesssetupX", FLG_CHAIN,
 764         { NULL, NULL, NULL, NULL, print_sesssetup } },
 765
 766     { SMBtconX, "SMBtconX", FLG_CHAIN,
 767         { "Com2=[w]\nOff2=[d]\nFlags=[w]\nPassLen=[d]\nPasswd&Path&Device=\n",
 768           NULL, "Com2=[w]\nOff2=[d]\n", "ServiceType=[R]\n", NULL } },
 769
 770     { SMBlockingX, "SMBlockingX", FLG_CHAIN,
 771         { NULL, NULL, NULL, NULL, print_lockingandx } },
 772
 773     { SMBtrans2, "SMBtrans2", 0, { NULL, NULL, NULL, NULL, print_trans2 } },
 774
 775     { SMBtranss2, "SMBtranss2", 0, DEFDESCRIPT },
 776     { SMBctemp, "SMBctemp", 0, DEFDESCRIPT },
 777     { SMBreadBs, "SMBreadBs", 0, DEFDESCRIPT },
 778     { SMBtrans, "SMBtrans", 0, { NULL, NULL, NULL, NULL, print_trans } },
 779
 780     { SMBnttrans, "SMBnttrans", 0, DEFDESCRIPT },
 781     { SMBnttranss, "SMBnttranss", 0, DEFDESCRIPT },
 782
 783     { SMBntcreateX, "SMBntcreateX", FLG_CHAIN,
 784         { "Com2=[w]\nOff2=[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",
 785           "Path=[C]\n",
 786           "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",
 787           NULL, NULL } },
 788
 789     { SMBntcancel, "SMBntcancel", 0, DEFDESCRIPT },
 790
 791     { -1, NULL, 0, DEFDESCRIPT }
 792 };
 793
 794
 795 /*
 796  * print a SMB message
 797  */
 798 static void
 799 print_smb(netdissect_options *ndo,
 800           const u_char *buf, const u_char *maxbuf)
 801 {
 802     uint16_t flags2;
 803     int nterrcodes;
 804     int command;
 805     uint32_t nterror;
 806     const u_char *words, *maxwords, *data;
 807     const struct smbfns *fn;
 808     const char *fmt_smbheader =
 809         "[P4]SMB Command   =  [B]\nError class   =  [BP1]\nError code    =  [d]\nFlags1        =  [B]\nFlags2        =  [B][P13]\nTree ID       =  [d]\nProc ID       =  [d]\nUID           =  [d]\nMID           =  [d]\nWord Count    =  [b]\n";
 810     int smboffset;
 811
 812     ND_TCHECK(buf[9]);
 813     request = (buf[9] & 0x80) ? 0 : 1;
 814     startbuf = buf;
 815
 816     command = buf[4];
 817
 818     fn = smbfind(command, smb_fns);
 819
 820     if (ndo->ndo_vflag > 1)
 821         ND_PRINT((ndo, "\n"));
 822
 823     ND_PRINT((ndo, "SMB PACKET: %s (%s)\n", fn->name, request ? "REQUEST" : "REPLY"));
 824
 825     if (ndo->ndo_vflag < 2)
 826         return;
 827
 828     ND_TCHECK_16BITS(&buf[10]);
 829     flags2 = EXTRACT_LE_16BITS(&buf[10]);
 830     unicodestr = flags2 & 0x8000;
 831     nterrcodes = flags2 & 0x4000;
 832
 833     /* print out the header */
 834     smb_fdata(ndo, buf, fmt_smbheader, buf + 33, unicodestr);
 835
 836     if (nterrcodes) {
 837         nterror = EXTRACT_LE_32BITS(&buf[5]);
 838         if (nterror)
 839             ND_PRINT((ndo, "NTError = %s\n", nt_errstr(nterror)));
 840     } else {
 841         if (buf[5])
 842             ND_PRINT((ndo, "SMBError = %s\n", smb_errstr(buf[5], EXTRACT_LE_16BITS(&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(words[0]);
 855         wct = words[0];
 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_TCHECK2(words[1 + 2 * i], 2);
 879                         v = EXTRACT_LE_16BITS(words + 1 + 2 * i);
 880                         ND_PRINT((ndo, "smb_vwv[%d]=%d (0x%X)\n", i, v, v));
 881                     }
 882                 }
 883             }
 884
 885             ND_TCHECK2(*data, 2);
 886             bcc = EXTRACT_LE_16BITS(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(words[1]);
 904         command = words[1];
 905         if (command == 0xFF)
 906             break;
 907         ND_TCHECK2(words[3], 2);
 908         newsmboffset = EXTRACT_LE_16BITS(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     ND_TCHECK_8BITS(data);
 949     type = data[0];
 950     ND_TCHECK_16BITS(data + 2);
 951     nbt_len = EXTRACT_16BITS(data + 2);
 952     length -= 4;
 953     caplen -= 4;
 954
 955     startbuf = data;
 956
 957     if (ndo->ndo_vflag < 2) {
 958         ND_PRINT((ndo, " NBT Session Packet: "));
 959         switch (type) {
 960         case 0x00:
 961             ND_PRINT((ndo, "Session Message"));
 962             break;
 963
 964         case 0x81:
 965             ND_PRINT((ndo, "Session Request"));
 966             break;
 967
 968         case 0x82:
 969             ND_PRINT((ndo, "Session Granted"));
 970             break;
 971
 972         case 0x83:
 973           {
 974             int ecode;
 975
 976             if (nbt_len < 4)
 977                 goto trunc;
 978             if (length < 4)
 979                 goto trunc;
 980             if (caplen < 4)
 981                 goto trunc;
 982             ecode = data[4];
 983
 984             ND_PRINT((ndo, "Session Reject, "));
 985             switch (ecode) {
 986             case 0x80:
 987                 ND_PRINT((ndo, "Not listening on called name"));
 988                 break;
 989             case 0x81:
 990                 ND_PRINT((ndo, "Not listening for calling name"));
 991                 break;
 992             case 0x82:
 993                 ND_PRINT((ndo, "Called name not present"));
 994                 break;
 995             case 0x83:
 996                 ND_PRINT((ndo, "Called name present, but insufficient resources"));
 997                 break;
 998             default:
 999                 ND_PRINT((ndo, "Unspecified error 0x%X", ecode));
1000                 break;
1001             }
1002           }
1003             break;
1004
1005         case 0x85:
1006             ND_PRINT((ndo, "Session Keepalive"));
1007             break;
1008
1009         default:
1010             data = smb_fdata(ndo, data, "Unknown packet type [rB]", maxbuf, 0);
1011             break;
1012         }
1013     } else {
1014         ND_PRINT((ndo, "\n>>> NBT Session Packet\n"));
1015         switch (type) {
1016         case 0x00:
1017             data = smb_fdata(ndo, data, "[P1]NBT Session Message\nFlags=[B]\nLength=[rd]\n",
1018                 data + 4, 0);
1019             if (data == NULL)
1020                 break;
1021             if (nbt_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1022                 if ((int)nbt_len > caplen) {
1023                     if ((int)nbt_len > length)
1024                         ND_PRINT((ndo, "WARNING: Packet is continued in later TCP segments\n"));
1025                     else
1026                         ND_PRINT((ndo, "WARNING: Short packet. Try increasing the snap length by %d\n",
1027                             nbt_len - caplen));
1028                 }
1029                 print_smb(ndo, data, maxbuf > data + nbt_len ? data + nbt_len : maxbuf);
1030             } else
1031                 ND_PRINT((ndo, "Session packet:(raw data or continuation?)\n"));
1032             break;
1033
1034         case 0x81:
1035             data = smb_fdata(ndo, data,
1036                 "[P1]NBT Session Request\nFlags=[B]\nLength=[rd]\nDestination=[n1]\nSource=[n1]\n",
1037                 maxbuf, 0);
1038             break;
1039
1040         case 0x82:
1041             data = smb_fdata(ndo, data, "[P1]NBT Session Granted\nFlags=[B]\nLength=[rd]\n", maxbuf, 0);
1042             break;
1043
1044         case 0x83:
1045           {
1046             const u_char *origdata;
1047             int ecode;
1048
1049             origdata = data;
1050             data = smb_fdata(ndo, data, "[P1]NBT SessionReject\nFlags=[B]\nLength=[rd]\nReason=[B]\n",
1051                 maxbuf, 0);
1052             if (data == NULL)
1053                 break;
1054             if (nbt_len >= 1 && caplen >= 1) {
1055                 ecode = origdata[4];
1056                 switch (ecode) {
1057                 case 0x80:
1058                     ND_PRINT((ndo, "Not listening on called name\n"));
1059                     break;
1060                 case 0x81:
1061                     ND_PRINT((ndo, "Not listening for calling name\n"));
1062                     break;
1063                 case 0x82:
1064                     ND_PRINT((ndo, "Called name not present\n"));
1065                     break;
1066                 case 0x83:
1067                     ND_PRINT((ndo, "Called name present, but insufficient resources\n"));
1068                     break;
1069                 default:
1070                     ND_PRINT((ndo, "Unspecified error 0x%X\n", ecode));
1071                     break;
1072                 }
1073             }
1074           }
1075             break;
1076
1077         case 0x85:
1078             data = smb_fdata(ndo, data, "[P1]NBT Session Keepalive\nFlags=[B]\nLength=[rd]\n", maxbuf, 0);
1079             break;
1080
1081         default:
1082             data = smb_fdata(ndo, data, "NBT - Unknown packet type\nType=[B]\n", maxbuf, 0);
1083             break;
1084         }
1085         ND_PRINT((ndo, "\n"));
1086     }
1087     return;
1088 trunc:
1089     ND_PRINT((ndo, "%s", tstr));
1090 }
1091
1092 static const struct tok opcode_str[] = {
1093         { 0,  "QUERY"                   },
1094         { 5,  "REGISTRATION"            },
1095         { 6,  "RELEASE"                 },
1096         { 7,  "WACK"                    },
1097         { 8,  "REFRESH(8)"              },
1098         { 9,  "REFRESH"                 },
1099         { 15, "MULTIHOMED REGISTRATION" },
1100         { 0, NULL }
1101 };
1102
1103 /*
1104  * print a NBT packet received across udp on port 137
1105  */
1106 void
1107 nbt_udp137_print(netdissect_options *ndo,
1108                  const u_char *data, int length)
1109 {
1110     const u_char *maxbuf = data + length;
1111     int name_trn_id, response, opcode, nm_flags, rcode;
1112     int qdcount, ancount, nscount, arcount;
1113     const u_char *p;
1114     int total, i;
1115
1116     ND_TCHECK2(data[10], 2);
1117     name_trn_id = EXTRACT_16BITS(data);
1118     response = (data[2] >> 7);
1119     opcode = (data[2] >> 3) & 0xF;
1120     nm_flags = ((data[2] & 0x7) << 4) + (data[3] >> 4);
1121     rcode = data[3] & 0xF;
1122     qdcount = EXTRACT_16BITS(data + 4);
1123     ancount = EXTRACT_16BITS(data + 6);
1124     nscount = EXTRACT_16BITS(data + 8);
1125     arcount = EXTRACT_16BITS(data + 10);
1126     startbuf = data;
1127
1128     if (maxbuf <= data)
1129         return;
1130
1131     if (ndo->ndo_vflag > 1)
1132         ND_PRINT((ndo, "\n>>> "));
1133
1134     ND_PRINT((ndo, "NBT UDP PACKET(137): %s", tok2str(opcode_str, "OPUNKNOWN", opcode)));
1135     if (response) {
1136         ND_PRINT((ndo, "; %s", rcode ? "NEGATIVE" : "POSITIVE"));
1137     }
1138     ND_PRINT((ndo, "; %s; %s", response ? "RESPONSE" : "REQUEST",
1139               (nm_flags & 1) ? "BROADCAST" : "UNICAST"));
1140
1141     if (ndo->ndo_vflag < 2)
1142         return;
1143
1144     ND_PRINT((ndo, "\nTrnID=0x%X\nOpCode=%d\nNmFlags=0x%X\nRcode=%d\nQueryCount=%d\nAnswerCount=%d\nAuthorityCount=%d\nAddressRecCount=%d\n",
1145         name_trn_id, opcode, nm_flags, rcode, qdcount, ancount, nscount,
1146         arcount));
1147
1148     p = data + 12;
1149
1150     total = ancount + nscount + arcount;
1151
1152     if (qdcount > 100 || total > 100) {
1153         ND_PRINT((ndo, "Corrupt packet??\n"));
1154         return;
1155     }
1156
1157     if (qdcount) {
1158         ND_PRINT((ndo, "QuestionRecords:\n"));
1159         for (i = 0; i < qdcount; i++) {
1160             p = smb_fdata(ndo, p,
1161                 "|Name=[n1]\nQuestionType=[rw]\nQuestionClass=[rw]\n#",
1162                 maxbuf, 0);
1163             if (p == NULL)
1164                 goto out;
1165         }
1166     }
1167
1168     if (total) {
1169         ND_PRINT((ndo, "\nResourceRecords:\n"));
1170         for (i = 0; i < total; i++) {
1171             int rdlen;
1172             int restype;
1173
1174             p = smb_fdata(ndo, p, "Name=[n1]\n#", maxbuf, 0);
1175             if (p == NULL)
1176                 goto out;
1177             ND_TCHECK_16BITS(p);
1178             restype = EXTRACT_16BITS(p);
1179             p = smb_fdata(ndo, p, "ResType=[rw]\nResClass=[rw]\nTTL=[rD]\n", p + 8, 0);
1180             if (p == NULL)
1181                 goto out;
1182             ND_TCHECK_16BITS(p);
1183             rdlen = EXTRACT_16BITS(p);
1184             ND_PRINT((ndo, "ResourceLength=%d\nResourceData=\n", rdlen));
1185             p += 2;
1186             if (rdlen == 6) {
1187                 p = smb_fdata(ndo, p, "AddrType=[rw]\nAddress=[b.b.b.b]\n", p + rdlen, 0);
1188                 if (p == NULL)
1189                     goto out;
1190             } else {
1191                 if (restype == 0x21) {
1192                     int numnames;
1193
1194                     ND_TCHECK(*p);
1195                     numnames = p[0];
1196                     p = smb_fdata(ndo, p, "NumNames=[B]\n", p + 1, 0);
1197                     if (p == NULL)
1198                         goto out;
1199                     while (numnames--) {
1200                         p = smb_fdata(ndo, p, "Name=[n2]\t#", maxbuf, 0);
1201                         if (p == NULL)
1202                             goto out;
1203                         ND_TCHECK(*p);
1204                         if (p[0] & 0x80)
1205                             ND_PRINT((ndo, "<GROUP> "));
1206                         switch (p[0] & 0x60) {
1207                         case 0x00: ND_PRINT((ndo, "B ")); break;
1208                         case 0x20: ND_PRINT((ndo, "P ")); break;
1209                         case 0x40: ND_PRINT((ndo, "M ")); break;
1210                         case 0x60: ND_PRINT((ndo, "_ ")); break;
1211                         }
1212                         if (p[0] & 0x10)
1213                             ND_PRINT((ndo, "<DEREGISTERING> "));
1214                         if (p[0] & 0x08)
1215                             ND_PRINT((ndo, "<CONFLICT> "));
1216                         if (p[0] & 0x04)
1217                             ND_PRINT((ndo, "<ACTIVE> "));
1218                         if (p[0] & 0x02)
1219                             ND_PRINT((ndo, "<PERMANENT> "));
1220                         ND_PRINT((ndo, "\n"));
1221                         p += 2;
1222                     }
1223                 } else {
1224                     smb_print_data(ndo, p, min(rdlen, length - (p - data)));
1225                     p += rdlen;
1226                 }
1227             }
1228         }
1229     }
1230
1231     if (p < maxbuf)
1232         smb_fdata(ndo, p, "AdditionalData:\n", maxbuf, 0);
1233
1234 out:
1235     ND_PRINT((ndo, "\n"));
1236     return;
1237 trunc:
1238     ND_PRINT((ndo, "%s", tstr));
1239 }
1240
1241 /*
1242  * Print an SMB-over-TCP packet received across tcp on port 445
1243  */
1244 void
1245 smb_tcp_print(netdissect_options *ndo,
1246               const u_char * data, int length)
1247 {
1248     int caplen;
1249     u_int smb_len;
1250     const u_char *maxbuf;
1251
1252     if (length < 4)
1253         goto trunc;
1254     if (ndo->ndo_snapend < data)
1255         goto trunc;
1256     caplen = ndo->ndo_snapend - data;
1257     if (caplen < 4)
1258         goto trunc;
1259     maxbuf = data + caplen;
1260     smb_len = EXTRACT_24BITS(data + 1);
1261     length -= 4;
1262     caplen -= 4;
1263
1264     startbuf = data;
1265     data += 4;
1266
1267     if (smb_len >= 4 && caplen >= 4 && memcmp(data,"\377SMB",4) == 0) {
1268         if ((int)smb_len > caplen) {
1269             if ((int)smb_len > length)
1270                 ND_PRINT((ndo, " WARNING: Packet is continued in later TCP segments\n"));
1271             else
1272                 ND_PRINT((ndo, " WARNING: Short packet. Try increasing the snap length by %d\n",
1273                     smb_len - caplen));
1274         } else
1275             ND_PRINT((ndo, " "));
1276         print_smb(ndo, data, maxbuf > data + smb_len ? data + smb_len : maxbuf);
1277     } else
1278         ND_PRINT((ndo, " SMB-over-TCP packet:(raw data or continuation?)\n"));
1279     return;
1280 trunc:
1281     ND_PRINT((ndo, "%s", tstr));
1282 }
1283
1284 /*
1285  * print a NBT packet received across udp on port 138
1286  */
1287 void
1288 nbt_udp138_print(netdissect_options *ndo,
1289                  const u_char *data, int length)
1290 {
1291     const u_char *maxbuf = data + length;
1292
1293     if (maxbuf > ndo->ndo_snapend)
1294         maxbuf = ndo->ndo_snapend;
1295     if (maxbuf <= data)
1296         return;
1297     startbuf = data;
1298
1299     if (ndo->ndo_vflag < 2) {
1300         ND_PRINT((ndo, "NBT UDP PACKET(138)"));
1301         return;
1302     }
1303
1304     data = smb_fdata(ndo, data,
1305         "\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#",
1306         maxbuf, 0);
1307
1308     if (data != NULL) {
1309         /* If there isn't enough data for "\377SMB", don't check for it. */
1310         if (&data[3] >= maxbuf)
1311             goto out;
1312
1313         if (memcmp(data, "\377SMB",4) == 0)
1314             print_smb(ndo, data, maxbuf);
1315     }
1316 out:
1317     ND_PRINT((ndo, "\n"));
1318 }
1319
1320
1321 /*
1322    print netbeui frames
1323 */
1324 static struct nbf_strings {
1325         const char      *name;
1326         const char      *nonverbose;
1327         const char      *verbose;
1328 } nbf_strings[0x20] = {
1329         { "Add Group Name Query", ", [P23]Name to add=[n2]#",
1330           "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1331         { "Add Name Query", ", [P23]Name to add=[n2]#",
1332           "[P5]ResponseCorrelator=[w]\n[P16]Name to add=[n2]\n" },
1333         { "Name In Conflict", NULL, NULL },
1334         { "Status Query", NULL, NULL },
1335         { NULL, NULL, NULL },   /* not used */
1336         { NULL, NULL, NULL },   /* not used */
1337         { NULL, NULL, NULL },   /* not used */
1338         { "Terminate Trace", NULL, NULL },
1339         { "Datagram", NULL,
1340           "[P7]Destination=[n2]\nSource=[n2]\n" },
1341         { "Broadcast Datagram", NULL,
1342           "[P7]Destination=[n2]\nSource=[n2]\n" },
1343         { "Name Query", ", [P7]Name=[n2]#",
1344           "[P1]SessionNumber=[B]\nNameType=[B][P2]\nResponseCorrelator=[w]\nName=[n2]\nName of sender=[n2]\n" },
1345         { NULL, NULL, NULL },   /* not used */
1346         { NULL, NULL, NULL },   /* not used */
1347         { "Add Name Response", ", [P1]GroupName=[w] [P4]Destination=[n2] Source=[n2]#",
1348           "AddNameInProcess=[B]\nGroupName=[w]\nTransmitCorrelator=[w][P2]\nDestination=[n2]\nSource=[n2]\n" },
1349         { "Name Recognized", NULL,
1350           "[P1]Data2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nDestination=[n2]\nSource=[n2]\n" },
1351         { "Status Response", NULL, NULL },
1352         { NULL, NULL, NULL },   /* not used */
1353         { NULL, NULL, NULL },   /* not used */
1354         { NULL, NULL, NULL },   /* not used */
1355         { "Terminate Trace", NULL, NULL },
1356         { "Data Ack", NULL,
1357           "[P3]TransmitCorrelator=[w][P2]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1358         { "Data First/Middle", NULL,
1359           "Flags=[{RECEIVE_CONTINUE|NO_ACK||PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1360         { "Data Only/Last", NULL,
1361           "Flags=[{|NO_ACK|PIGGYBACK_ACK_ALLOWED|PIGGYBACK_ACK_INCLUDED|}]\nResyncIndicator=[w][P2]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1362         { "Session Confirm", NULL,
1363           "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1364         { "Session End", NULL,
1365           "[P1]Data2=[w][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1366         { "Session Initialize", NULL,
1367           "Data1=[B]\nData2=[w]\nTransmitCorrelator=[w]\nResponseCorelator=[w]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1368         { "No Receive", NULL,
1369           "Flags=[{|SEND_NO_ACK}]\nDataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1370         { "Receive Outstanding", NULL,
1371           "[P1]DataBytesAccepted=[b][P4]\nRemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1372         { "Receive Continue", NULL,
1373           "[P2]TransmitCorrelator=[w]\n[P2]RemoteSessionNumber=[B]\nLocalSessionNumber=[B]\n" },
1374         { NULL, NULL, NULL },   /* not used */
1375         { NULL, NULL, NULL },   /* not used */
1376         { "Session Alive", NULL, NULL }
1377 };
1378
1379 void
1380 netbeui_print(netdissect_options *ndo,
1381               u_short control, const u_char *data, int length)
1382 {
1383     const u_char *maxbuf = data + length;
1384     int len;
1385     int command;
1386     const u_char *data2;
1387     int is_truncated = 0;
1388
1389     if (maxbuf > ndo->ndo_snapend)
1390         maxbuf = ndo->ndo_snapend;
1391     ND_TCHECK(data[4]);
1392     len = EXTRACT_LE_16BITS(data);
1393     command = data[4];
1394     data2 = data + len;
1395     if (data2 >= maxbuf) {
1396         data2 = maxbuf;
1397         is_truncated = 1;
1398     }
1399
1400     startbuf = data;
1401
1402     if (ndo->ndo_vflag < 2) {
1403         ND_PRINT((ndo, "NBF Packet: "));
1404         data = smb_fdata(ndo, data, "[P5]#", maxbuf, 0);
1405     } else {
1406         ND_PRINT((ndo, "\n>>> NBF Packet\nType=0x%X ", control));
1407         data = smb_fdata(ndo, data, "Length=[d] Signature=[w] Command=[B]\n#", maxbuf, 0);
1408     }
1409     if (data == NULL)
1410         goto out;
1411
1412     if (command > 0x1f || nbf_strings[command].name == NULL) {
1413         if (ndo->ndo_vflag < 2)
1414             data = smb_fdata(ndo, data, "Unknown NBF Command#", data2, 0);
1415         else
1416             data = smb_fdata(ndo, data, "Unknown NBF Command\n", data2, 0);
1417     } else {
1418         if (ndo->ndo_vflag < 2) {
1419             ND_PRINT((ndo, "%s", nbf_strings[command].name));
1420             if (nbf_strings[command].nonverbose != NULL)
1421                 data = smb_fdata(ndo, data, nbf_strings[command].nonverbose, data2, 0);
1422         } else {
1423             ND_PRINT((ndo, "%s:\n", nbf_strings[command].name));
1424             if (nbf_strings[command].verbose != NULL)
1425                 data = smb_fdata(ndo, data, nbf_strings[command].verbose, data2, 0);
1426             else
1427                 ND_PRINT((ndo, "\n"));
1428         }
1429     }
1430
1431     if (ndo->ndo_vflag < 2)
1432         return;
1433
1434     if (data == NULL)
1435         goto out;
1436
1437     if (is_truncated) {
1438         /* data2 was past the end of the buffer */
1439         goto out;
1440     }
1441
1442     /* If this isn't a command that would contain an SMB message, quit. */
1443     if (command != 0x08 && command != 0x09 && command != 0x15 &&
1444         command != 0x16)
1445         goto out;
1446
1447     /* If there isn't enough data for "\377SMB", don't look for it. */
1448     if (&data2[3] >= maxbuf)
1449         goto out;
1450
1451     if (memcmp(data2, "\377SMB",4) == 0)
1452         print_smb(ndo, data2, maxbuf);
1453     else {
1454         int i;
1455         for (i = 0; i < 128; i++) {
1456             if (&data2[i + 3] >= maxbuf)
1457                 break;
1458             if (memcmp(&data2[i], "\377SMB", 4) == 0) {
1459                 ND_PRINT((ndo, "found SMB packet at %d\n", i));
1460                 print_smb(ndo, &data2[i], maxbuf);
1461                 break;
1462             }
1463         }
1464     }
1465
1466 out:
1467     ND_PRINT((ndo, "\n"));
1468     return;
1469 trunc:
1470     ND_PRINT((ndo, "%s", tstr));
1471 }
1472
1473
1474 /*
1475  * print IPX-Netbios frames
1476  */
1477 void
1478 ipx_netbios_print(netdissect_options *ndo,
1479                   const u_char *data, u_int length)
1480 {
1481     /*
1482      * this is a hack till I work out how to parse the rest of the
1483      * NetBIOS-over-IPX stuff
1484      */
1485     int i;
1486     const u_char *maxbuf;
1487
1488     maxbuf = data + length;
1489     /* Don't go past the end of the captured data in the packet. */
1490     if (maxbuf > ndo->ndo_snapend)
1491         maxbuf = ndo->ndo_snapend;
1492     startbuf = data;
1493     for (i = 0; i < 128; i++) {
1494         if (&data[i + 4] > maxbuf)
1495             break;
1496         if (memcmp(&data[i], "\377SMB", 4) == 0) {
1497             smb_fdata(ndo, data, "\n>>> IPX transport ", &data[i], 0);
1498             print_smb(ndo, &data[i], maxbuf);
1499             ND_PRINT((ndo, "\n"));
1500             break;
1501         }
1502     }
1503     if (i == 128)
1504         smb_fdata(ndo, data, "\n>>> Unknown IPX ", maxbuf, 0);
1505 }