packet-afs-macros.h

   1 /* packet-afs-macros.h
   2  * Helper macros for AFS packet dissection
   3  * Copyright 1999, Nathan Neulinger <nneul@umr.edu>
   4  * Based on routines from tcpdump patches by
   5  *   Ken Hornstein <kenh@cmf.nrl.navy.mil>
   6  * Portions based on information retrieved from the RX definitions
   7  *   in Arla, the free AFS client at http://www.stacken.kth.se/project/arla/
   8  * Portions based on information/specs retrieved from the OpenAFS sources at
   9  *   www.openafs.org, Copyright IBM.
  10  *
  11  * $Id: packet-afs-macros.h,v 1.21 2002/10/11 21:58:25 guy Exp $
  12  *
  13  * Ethereal - Network traffic analyzer
  14  * By Gerald Combs <gerald@ethereal.com>
  15  * Copyright 1998 Gerald Combs
  16  *
  17  * Copied from packet-tftp.c
  18  *
  19  * This program is free software; you can redistribute it and/or
  20  * modify it under the terms of the GNU General Public License
  21  * as published by the Free Software Foundation; either version 2
  22  * of the License, or (at your option) any later version.
  23  *
  24  * This program is distributed in the hope that it will be useful,
  25  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  26  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  27  * GNU General Public License for more details.
  28  *
  29  * You should have received a copy of the GNU General Public License
  30  * along with this program; if not, write to the Free Software
  31  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  32  */
  33
  34
  35
  36 /*
  37  * Macros for helper dissection routines
  38  *
  39  * The macros are here to save on coding. They assume that
  40  * the current offset is in 'offset', and that the offset
  41  * should be incremented after performing the macro's operation.
  42  */
  43
  44
  45 /* Output a unsigned integer, stored into field 'field'
  46    Assumes it is in network byte order, converts to host before using */
  47 #define OUT_UINT(field) \
  48         proto_tree_add_uint(tree, field, tvb, offset, sizeof(guint32), tvb_get_ntohl(tvb, offset)); \
  49         offset += 4;
  50
  51 /* Output a unsigned integer, stored into field 'field'
  52    Assumes it is in network byte order, converts to host before using */
  53 #define OUT_INT(field) \
  54         proto_tree_add_int(tree, field, tvb, offset, sizeof(gint32), tvb_get_ntohl(tvb, offset)); \
  55         offset += 4;
  56
  57 /* Output a unsigned integer, stored into field 'field'
  58    Assumes it is in network byte order, converts to host before using,
  59    Note - does not increment offset, so can be used repeatedly for bitfields */
  60 #define DISP_UINT(field) \
  61         proto_tree_add_uint(tree,field,tvb,offset,sizeof(guint32),tvb_get_ntohl(tvb, offset));
  62
  63 /* Output an IPv4 address, stored into field 'field' */
  64 #define OUT_IP(field) \
  65         proto_tree_add_ipv4(tree,field,tvb,offset,sizeof(gint32),\
  66                 tvb_get_letohl(tvb, offset));\
  67         offset += 4;
  68
  69 /* Output a simple rx array */
  70 #define OUT_RXArray8(func) \
  71         { \
  72                 unsigned int j,i; \
  73                 j = tvb_get_guint8(tvb, offset); \
  74                 offset += 1; \
  75                 for (i=0; i<j; i++) { \
  76                         func; \
  77                 } \
  78         }
  79
  80 /* Output a simple rx array */
  81 #define OUT_RXArray32(func) \
  82         { \
  83                 unsigned int j,i; \
  84                 j = tvb_get_ntohl(tvb, offset); \
  85                 offset += sizeof(guint32); \
  86                 for (i=0; i<j; i++) { \
  87                         func; \
  88                 } \
  89         }
  90
  91 /* Output a UNIX seconds/microseconds timestamp, after converting to an
  92    nstime_t */
  93 #define OUT_TIMESTAMP(field) \
  94         { nstime_t ts; \
  95         ts.secs = tvb_get_ntohl(tvb, offset); \
  96         ts.nsecs = tvb_get_ntohl(tvb, offset)*1000; \
  97         proto_tree_add_time(tree,field, tvb,offset,2*sizeof(guint32),&ts); \
  98         offset += 8; \
  99         }
 100
 101 /* Output a UNIX seconds-only timestamp, after converting to an nstime_t */
 102 #define OUT_DATE(field) \
 103         { nstime_t ts; \
 104         ts.secs = tvb_get_ntohl(tvb, offset); \
 105         ts.nsecs = 0; \
 106         proto_tree_add_time(tree,field, tvb,offset,sizeof(guint32),&ts); \
 107         offset += 4; \
 108         }
 109
 110 /* Output a rx style string, up to a maximum length first
 111    4 bytes - length, then char data */
 112 #define OUT_RXString(field) \
 113         {       int i,len; \
 114                 char *tmp; \
 115                 const char *p; \
 116                 i = tvb_get_ntohl(tvb, offset); \
 117                 offset += 4; \
 118                 p = tvb_get_ptr(tvb,offset,i); \
 119                 len = ((i+4-1)/4)*4; \
 120                 tmp = g_malloc(i+1); \
 121                 memcpy(tmp, p, i); \
 122                 tmp[i] = '\0'; \
 123                 proto_tree_add_string(tree, field, tvb, offset-4, len+4, \
 124                 (void *)tmp); \
 125                 g_free(tmp); \
 126                 offset += len; \
 127         }
 128
 129 /* Output a fixed length vectorized string (each char is a 32 bit int) */
 130 #define OUT_RXStringV(field, length) \
 131         {       char tmp[length+1]; \
 132                 int i,soff; \
 133                 soff = offset;\
 134                 for (i=0; i<length; i++)\
 135                 {\
 136                         tmp[i] = (char) tvb_get_ntohl(tvb, offset);\
 137                         offset += sizeof(guint32);\
 138                 }\
 139                 tmp[length] = '\0';\
 140                 proto_tree_add_string(tree, field, tvb, soff, length*sizeof(guint32), tmp);\
 141         }
 142
 143
 144 /* Output a callback */
 145 #define OUT_FS_AFSCallBack() \
 146         {       proto_tree *save, *ti; \
 147                 ti = proto_tree_add_text(tree, tvb, offset, 3*4, "Callback"); \
 148                 save = tree; \
 149                 tree = proto_item_add_subtree(ti, ett_afs_callback); \
 150                 OUT_UINT(hf_afs_fs_callback_version); \
 151                 OUT_DATE(hf_afs_fs_callback_expires); \
 152                 OUT_UINT(hf_afs_fs_callback_type); \
 153                 tree = save; \
 154         }
 155
 156 /* Output a callback */
 157 #define OUT_CB_AFSCallBack() \
 158         {       proto_tree *save, *ti; \
 159                 ti = proto_tree_add_text(tree, tvb, offset, 3*4, "Callback"); \
 160                 save = tree; \
 161                 tree = proto_item_add_subtree(ti, ett_afs_callback); \
 162                 OUT_UINT(hf_afs_cb_callback_version); \
 163                 OUT_DATE(hf_afs_cb_callback_expires); \
 164                 OUT_UINT(hf_afs_cb_callback_type); \
 165                 tree = save; \
 166         }
 167
 168 /* Output a File ID */
 169 #define OUT_FS_AFSFid(label) \
 170         {       proto_tree *save, *ti; \
 171                 ti = proto_tree_add_text(tree, tvb, offset, 3*4, \
 172                         "FileID (%s)", label); \
 173                 save = tree; \
 174                 tree = proto_item_add_subtree(ti, ett_afs_fid); \
 175                 OUT_UINT(hf_afs_fs_fid_volume); \
 176                 OUT_UINT(hf_afs_fs_fid_vnode); \
 177                 OUT_UINT(hf_afs_fs_fid_uniqifier); \
 178                 tree = save; \
 179         }
 180
 181 /* Output a Status mask */
 182 #define OUT_FS_STATUSMASK() \
 183         {       proto_tree *save, *ti; \
 184                 guint32 mask; \
 185                 mask = tvb_get_ntohl(tvb, offset); \
 186                 ti = proto_tree_add_uint(tree, hf_afs_fs_status_mask, tvb, offset, \
 187                         sizeof(guint32), mask); \
 188                 save = tree; \
 189                 tree = proto_item_add_subtree(ti, ett_afs_status_mask); \
 190                 proto_tree_add_boolean(tree, hf_afs_fs_status_mask_setmodtime, \
 191                         tvb,offset,sizeof(guint32), mask); \
 192                 proto_tree_add_boolean(tree, hf_afs_fs_status_mask_setowner, \
 193                         tvb,offset,sizeof(guint32), mask); \
 194                 proto_tree_add_boolean(tree, hf_afs_fs_status_mask_setgroup, \
 195                         tvb,offset,sizeof(guint32), mask); \
 196                 proto_tree_add_boolean(tree, hf_afs_fs_status_mask_setmode, \
 197                         tvb,offset,sizeof(guint32), mask); \
 198                 proto_tree_add_boolean(tree, hf_afs_fs_status_mask_setsegsize, \
 199                         tvb,offset,sizeof(guint32), mask); \
 200                 proto_tree_add_boolean(tree, hf_afs_fs_status_mask_fsync, \
 201                         tvb,offset,sizeof(guint32), mask); \
 202                 offset += 4; \
 203                 tree = save; \
 204         }
 205
 206 /* Output vldb flags */
 207 #define OUT_VLDB_Flags() \
 208         {       proto_tree *save, *ti; \
 209                 guint32 flags; \
 210                 flags = tvb_get_ntohl(tvb, offset); \
 211                 ti = proto_tree_add_uint(tree, hf_afs_vldb_flags, tvb, offset, \
 212                         sizeof(guint32), flags); \
 213                 save = tree; \
 214                 tree = proto_item_add_subtree(ti, ett_afs_vldb_flags); \
 215                 proto_tree_add_boolean(tree, hf_afs_vldb_flags_rwexists, \
 216                         tvb,offset,sizeof(guint32), flags); \
 217                 proto_tree_add_boolean(tree, hf_afs_vldb_flags_roexists, \
 218                         tvb,offset,sizeof(guint32), flags); \
 219                 proto_tree_add_boolean(tree, hf_afs_vldb_flags_bkexists, \
 220                         tvb,offset,sizeof(guint32), flags); \
 221                 proto_tree_add_boolean(tree, hf_afs_vldb_flags_dfsfileset, \
 222                         tvb,offset,sizeof(guint32), flags); \
 223                 offset += 4; \
 224                 tree = save; \
 225         }
 226
 227
 228
 229 /* Output a File ID */
 230 #define OUT_CB_AFSFid(label) \
 231         {       proto_tree *save, *ti; \
 232                 ti = proto_tree_add_text(tree, tvb, offset, 3*4, \
 233                         "FileID (%s)", label); \
 234                 save = tree; \
 235                 tree = proto_item_add_subtree(ti, ett_afs_fid); \
 236                 OUT_UINT(hf_afs_cb_fid_volume); \
 237                 OUT_UINT(hf_afs_cb_fid_vnode); \
 238                 OUT_UINT(hf_afs_cb_fid_uniqifier); \
 239                 tree = save; \
 240         }
 241
 242 /* Output a StoreStatus */
 243 #define OUT_FS_AFSStoreStatus(label) \
 244         {       proto_tree *save, *ti; \
 245                 ti = proto_tree_add_text(tree, tvb, offset, 6*4, \
 246                         label); \
 247                 save = tree; \
 248                 tree = proto_item_add_subtree(ti, ett_afs_status); \
 249                 OUT_FS_STATUSMASK(); \
 250                 OUT_DATE(hf_afs_fs_status_clientmodtime); \
 251                 OUT_UINT(hf_afs_fs_status_owner); \
 252                 OUT_UINT(hf_afs_fs_status_group); \
 253                 OUT_UINT(hf_afs_fs_status_mode); \
 254                 OUT_UINT(hf_afs_fs_status_segsize); \
 255                 tree = save; \
 256         }
 257
 258 /* Output a FetchStatus */
 259 #define OUT_FS_AFSFetchStatus(label) \
 260         {       proto_tree *save, *ti; \
 261                 ti = proto_tree_add_text(tree, tvb, offset, 21*4, \
 262                         label); \
 263                 save = tree; \
 264                 tree = proto_item_add_subtree(ti, ett_afs_status); \
 265                 OUT_UINT(hf_afs_fs_status_interfaceversion); \
 266                 OUT_UINT(hf_afs_fs_status_filetype); \
 267                 OUT_UINT(hf_afs_fs_status_linkcount); \
 268                 OUT_UINT(hf_afs_fs_status_length); \
 269                 OUT_UINT(hf_afs_fs_status_dataversion); \
 270                 OUT_UINT(hf_afs_fs_status_author); \
 271                 OUT_UINT(hf_afs_fs_status_owner); \
 272                 OUT_UINT(hf_afs_fs_status_calleraccess); \
 273                 OUT_UINT(hf_afs_fs_status_anonymousaccess); \
 274                 OUT_UINT(hf_afs_fs_status_mode); \
 275                 OUT_UINT(hf_afs_fs_status_parentvnode); \
 276                 OUT_UINT(hf_afs_fs_status_parentunique); \
 277                 OUT_UINT(hf_afs_fs_status_segsize); \
 278                 OUT_DATE(hf_afs_fs_status_clientmodtime); \
 279                 OUT_DATE(hf_afs_fs_status_servermodtime); \
 280                 OUT_UINT(hf_afs_fs_status_group); \
 281                 OUT_UINT(hf_afs_fs_status_synccounter); \
 282                 OUT_UINT(hf_afs_fs_status_dataversionhigh); \
 283                 OUT_UINT(hf_afs_fs_status_spare2); \
 284                 OUT_UINT(hf_afs_fs_status_spare3); \
 285                 OUT_UINT(hf_afs_fs_status_spare4); \
 286                 tree = save; \
 287         }
 288
 289 /* Output a VolSync */
 290 #define OUT_FS_AFSVolSync() \
 291         {       proto_tree *save, *ti; \
 292                 ti = proto_tree_add_text(tree, tvb, offset, 6*4, \
 293                         "VolSync"); \
 294                 save = tree; \
 295                 tree = proto_item_add_subtree(ti, ett_afs_volsync); \
 296                 OUT_DATE(hf_afs_fs_volsync_spare1); \
 297                 OUT_UINT(hf_afs_fs_volsync_spare2); \
 298                 OUT_UINT(hf_afs_fs_volsync_spare3); \
 299                 OUT_UINT(hf_afs_fs_volsync_spare4); \
 300                 OUT_UINT(hf_afs_fs_volsync_spare5); \
 301                 OUT_UINT(hf_afs_fs_volsync_spare6); \
 302                 tree = save; \
 303         }
 304
 305 /* Output a AFSCBFids */
 306 #define OUT_FS_AFSCBFids() \
 307         OUT_RXArray32(OUT_FS_AFSFid("Target"));
 308
 309 /* Output a ViceIds */
 310 #define OUT_FS_ViceIds() \
 311         OUT_RXArray8(OUT_UINT(hf_afs_fs_viceid));
 312
 313 /* Output a IPAddrs */
 314 #define OUT_FS_IPAddrs() \
 315         OUT_RXArray8(OUT_IP(hf_afs_fs_ipaddr));
 316
 317 /* Output a AFSCBs */
 318 #define OUT_FS_AFSCBs() \
 319         OUT_RXArray32(OUT_FS_AFSCallBack());
 320
 321 /* Output a AFSBulkStats */
 322 #define OUT_FS_AFSBulkStats() \
 323         OUT_RXArray32(OUT_FS_AFSFetchStatus("Status"));
 324
 325 /* Output a AFSFetchVolumeStatus */
 326 #define OUT_FS_AFSFetchVolumeStatus()
 327
 328 /* Output a AFSStoreVolumeStatus */
 329 #define OUT_FS_AFSStoreVolumeStatus()
 330
 331 /* Output a ViceStatistics structure */
 332 #define OUT_FS_ViceStatistics()
 333
 334 /* Output a AFS_CollData structure */
 335 #define OUT_FS_AFS_CollData()
 336
 337 /* Output a VolumeInfo structure */
 338 #define OUT_FS_VolumeInfo()
 339
 340 /* Output an AFS Token - might just be bytes though */
 341 #define OUT_FS_AFSTOKEN() OUT_RXStringV(hf_afs_fs_token, 1024)
 342
 343 /* Output a AFS acl */
 344 #define ACLOUT(who, positive, acl, bytes) \
 345         {       proto_tree *save, *ti; \
 346                 int tmpoffset; \
 347                 int acllen; \
 348                 char tmp[10]; \
 349                 tmp[0] = 0; \
 350                 if ( acl & PRSFS_READ ) strcat(tmp, "r"); \
 351                 if ( acl & PRSFS_LOOKUP ) strcat(tmp, "l"); \
 352                 if ( acl & PRSFS_INSERT ) strcat(tmp, "i"); \
 353                 if ( acl & PRSFS_DELETE ) strcat(tmp, "d"); \
 354                 if ( acl & PRSFS_WRITE ) strcat(tmp, "w"); \
 355                 if ( acl & PRSFS_LOCK ) strcat(tmp, "k"); \
 356                 if ( acl & PRSFS_ADMINISTER ) strcat(tmp, "a"); \
 357                 ti = proto_tree_add_text(tree, tvb, offset, bytes, \
 358                         "ACL:  %s %s%s", \
 359                         who, tmp, positive ? "" : " (negative)"); \
 360                 save = tree; \
 361                 tree = proto_item_add_subtree(ti, ett_afs_acl); \
 362                 proto_tree_add_string(tree,hf_afs_fs_acl_entity, tvb,offset,strlen(who), who);\
 363                 tmpoffset = offset + strlen(who) + 1; \
 364                 acllen = bytes - strlen(who) - 1; \
 365                 proto_tree_add_boolean(tree,hf_afs_fs_acl_r, tvb,tmpoffset,acllen,acl);\
 366                 proto_tree_add_boolean(tree,hf_afs_fs_acl_l, tvb,tmpoffset,acllen,acl);\
 367                 proto_tree_add_boolean(tree,hf_afs_fs_acl_i, tvb,tmpoffset,acllen,acl);\
 368                 proto_tree_add_boolean(tree,hf_afs_fs_acl_d, tvb,tmpoffset,acllen,acl);\
 369                 proto_tree_add_boolean(tree,hf_afs_fs_acl_w, tvb,tmpoffset,acllen,acl);\
 370                 proto_tree_add_boolean(tree,hf_afs_fs_acl_k, tvb,tmpoffset,acllen,acl);\
 371                 proto_tree_add_boolean(tree,hf_afs_fs_acl_a, tvb,tmpoffset,acllen,acl);\
 372                 tree = save; \
 373         }
 374
 375 /* Output a UUID */
 376 #define OUT_UUID(x) \
 377         OUT_BYTES(x, 11*sizeof(guint32));
 378 #define SKIP_UUID() \
 379         SKIP(11*sizeof(guint32));
 380
 381
 382 /* Output a bulkaddr */
 383 #define OUT_VLDB_BulkAddr() \
 384         OUT_RXArray32(OUT_IP(hf_afs_vldb_serverip));
 385
 386 /* output a bozo_key */
 387 #define OUT_BOS_KEY() \
 388         OUT_BYTES(hf_afs_bos_key, 8);
 389
 390 /* output a bozo_key */
 391 #define OUT_BOS_KEYINFO() \
 392         OUT_TIMESTAMP(hf_afs_bos_keymodtime); \
 393         OUT_UINT(hf_afs_bos_keychecksum); \
 394         OUT_UINT(hf_afs_bos_keyspare2);
 395
 396 /* output a bozo_netKTime */
 397 #define OUT_BOS_TIME() \
 398         SKIP(4); SKIP(2); SKIP(2); SKIP(2); SKIP(2);
 399
 400 /* output a bozo_status */
 401 #define OUT_BOS_STATUS() \
 402         SKIP(10 * 4);
 403
 404 /* output a ubik interface addr array */
 405 #define OUT_UBIK_InterfaceAddrs() \
 406     { \
 407         unsigned int i,j,seen_null=0; \
 408         for (i=0; i<255; i++) { \
 409                 j = tvb_get_ntohl(tvb, offset); \
 410                 if ( j != 0 ) { \
 411                         OUT_IP(hf_afs_ubik_interface); \
 412                         seen_null = 0; \
 413                 } else { \
 414                         if ( ! seen_null ) { \
 415                         proto_tree_add_text(tree, tvb, offset, \
 416                                 tvb_length_remaining(tvb, offset), \
 417                                 "Null Interface Addresses"); \
 418                                 seen_null = 1; \
 419                         } \
 420                         offset += 4; \
 421                 }\
 422         } \
 423     }
 424
 425 #define OUT_UBIK_DebugOld() \
 426         { \
 427                 OUT_DATE(hf_afs_ubik_now); \
 428                 OUT_DATE(hf_afs_ubik_lastyestime); \
 429                 OUT_IP(hf_afs_ubik_lastyeshost); \
 430                 OUT_UINT(hf_afs_ubik_lastyesstate); \
 431                 OUT_DATE(hf_afs_ubik_lastyesclaim); \
 432                 OUT_IP(hf_afs_ubik_lowesthost); \
 433                 OUT_DATE(hf_afs_ubik_lowesttime); \
 434                 OUT_IP(hf_afs_ubik_synchost); \
 435                 OUT_DATE(hf_afs_ubik_synctime); \
 436                 OUT_UBIKVERSION("Sync Version"); \
 437                 OUT_UBIKVERSION("Sync TID"); \
 438                 OUT_UINT(hf_afs_ubik_amsyncsite); \
 439                 OUT_DATE(hf_afs_ubik_syncsiteuntil); \
 440                 OUT_UINT(hf_afs_ubik_nservers); \
 441                 OUT_UINT(hf_afs_ubik_lockedpages); \
 442                 OUT_UINT(hf_afs_ubik_writelockedpages); \
 443                 OUT_UBIKVERSION("Local Version"); \
 444                 OUT_UINT(hf_afs_ubik_activewrite); \
 445                 OUT_UINT(hf_afs_ubik_tidcounter); \
 446                 OUT_UINT(hf_afs_ubik_anyreadlocks); \
 447                 OUT_UINT(hf_afs_ubik_anywritelocks); \
 448                 OUT_UINT(hf_afs_ubik_recoverystate); \
 449                 OUT_UINT(hf_afs_ubik_currenttrans); \
 450                 OUT_UINT(hf_afs_ubik_writetrans); \
 451                 OUT_DATE(hf_afs_ubik_epochtime); \
 452         }
 453
 454 #define OUT_UBIK_SDebugOld() \
 455         { \
 456                 OUT_IP(hf_afs_ubik_addr); \
 457                 OUT_DATE(hf_afs_ubik_lastvotetime); \
 458                 OUT_DATE(hf_afs_ubik_lastbeaconsent); \
 459                 OUT_UINT(hf_afs_ubik_lastvote); \
 460                 OUT_UBIKVERSION("Remote Version"); \
 461                 OUT_UINT(hf_afs_ubik_currentdb); \
 462                 OUT_UINT(hf_afs_ubik_beaconsincedown); \
 463                 OUT_UINT(hf_afs_ubik_up); \
 464         }
 465
 466 /* Skip a certain number of bytes */
 467 #define SKIP(bytes) \
 468         offset += bytes;
 469
 470 /* Raw data - to end of frame */
 471 #define OUT_BYTES_ALL(field) OUT_BYTES(field, tvb_length_remaining(tvb,offset))
 472
 473 /* Raw data */
 474 #define OUT_BYTES(field, bytes) \
 475         proto_tree_add_item(tree, field, tvb, offset, bytes, FALSE);\
 476         offset += bytes;
 477
 478
 479
 480 /* Skip the opcode */
 481 #define SKIP_OPCODE() \
 482         { \
 483                 SKIP(sizeof(guint32)); \
 484         }
 485
 486 /* Output a UBIK version code */
 487 #define OUT_UBIKVERSION(label) \
 488         {       proto_tree *save, *ti; \
 489                 unsigned int epoch,counter; \
 490                 nstime_t ts; \
 491                 epoch = tvb_get_ntohl(tvb, offset); \
 492                 offset += 4; \
 493                 counter = tvb_get_ntohl(tvb, offset); \
 494                 offset += 4; \
 495                 ts.secs = epoch; \
 496                 ts.nsecs = 0; \
 497                 ti = proto_tree_add_text(tree, tvb, offset-8, 8, \
 498                         "UBIK Version (%s): %u.%u", label, epoch, counter ); \
 499                 save = tree; \
 500                 tree = proto_item_add_subtree(ti, ett_afs_ubikver); \
 501                 if ( epoch != 0 ) \
 502                 proto_tree_add_time(tree,hf_afs_ubik_version_epoch, tvb,offset-8, \
 503                         sizeof(guint32),&ts); \
 504                 else \
 505                         proto_tree_add_text(tree, tvb, offset-8, \
 506                         sizeof(guint32),"Epoch: 0"); \
 507                 proto_tree_add_uint(tree,hf_afs_ubik_version_counter, tvb,offset-4, \
 508                         sizeof(guint32),counter); \
 509                 tree = save; \
 510         }
 511
 512 /* Output a kauth getticket request */
 513 #define OUT_KAUTH_GetTicket() \
 514         { \
 515                 int len = 0; \
 516                 OUT_UINT(hf_afs_kauth_kvno); \
 517                 OUT_RXString(hf_afs_kauth_domain); \
 518                 len = tvb_get_ntohl(tvb, offset); \
 519                 offset += 4; \
 520                 OUT_BYTES(hf_afs_kauth_data, len); \
 521                 OUT_RXString(hf_afs_kauth_princ); \
 522                 OUT_RXString(hf_afs_kauth_realm); \
 523         }
 524