packet-stat.c

   1 /* packet-stat.c
   2  * Routines for stat dissection
   3  *
   4  * $Id: packet-stat.c,v 1.14 2002/03/05 11:04:15 guy Exp $
   5  *
   6  * Ethereal - Network traffic analyzer
   7  * By Gerald Combs <gerald@ethereal.com>
   8  * Copyright 1998 Gerald Combs
   9  *
  10  * Copied from packet-smb.c
  11  *
  12  * 2001  Ronnie Sahlberg <See AUTHORS for email>
  13  *     Added the dissectors for STAT protocol
  14  *
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
  17  * as published by the Free Software Foundation; either version 2
  18  * of the License, or (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  * GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License
  26  * along with this program; if not, write to the Free Software
  27  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  28  */
  29
  30 #ifdef HAVE_CONFIG_H
  31 #include "config.h"
  32 #endif
  33
  34
  35 #ifdef HAVE_SYS_TYPES_H
  36 #include <sys/types.h>
  37 #endif
  38
  39 #include "packet-rpc.h"
  40 #include "packet-stat.h"
  41
  42 static int proto_stat = -1;
  43 static int hf_stat_mon_name = -1;
  44 static int hf_stat_stat_res = -1;
  45 static int hf_stat_stat_res_res = -1;
  46 static int hf_stat_stat_res_state = -1;
  47 static int hf_stat_state = -1;
  48 static int hf_stat_mon = -1;
  49 static int hf_stat_mon_id_name = -1;
  50 static int hf_stat_my_id = -1;
  51 static int hf_stat_my_id_hostname = -1;
  52 static int hf_stat_my_id_prog = -1;
  53 static int hf_stat_my_id_vers = -1;
  54 static int hf_stat_my_id_proc = -1;
  55 static int hf_stat_priv = -1;
  56 static int hf_stat_stat_chge = -1;
  57
  58 static gint ett_stat = -1;
  59 static gint ett_stat_stat_res = -1;
  60 static gint ett_stat_mon = -1;
  61 static gint ett_stat_my_id = -1;
  62 static gint ett_stat_stat_chge = -1;
  63
  64 #define STAT_SUCC       0
  65 #define STAT_FAIL       1
  66
  67 static const value_string stat_res[] =
  68 {
  69         {       0,      "STAT_SUCC" },
  70         {       1,      "STAT_FAIL" },
  71         {       0,      NULL }
  72 };
  73
  74 /* Calculate length (including padding) of my_id structure.
  75  * First read the length of the string and round it upwards to nearest
  76  * multiple of 4, then add 16 (4*uint32)
  77  */
  78 static int
  79 my_id_len(tvbuff_t *tvb, int offset)
  80 {
  81         int len;
  82
  83         len = tvb_get_ntohl(tvb, offset);
  84         if(len&0x03)
  85                 len = (len&0xfc)+4;
  86
  87         len += 16;
  88
  89         return len;
  90 }
  91
  92 /* Calculate length (including padding) of my_id structure.
  93  * First read the length of the string and round it upwards to nearest
  94  * multiple of 4, then add 4 (string len) and size of my_id struct.
  95  */
  96 static int
  97 mon_id_len(tvbuff_t *tvb, int offset)
  98 {
  99         int len;
 100
 101         len = tvb_get_ntohl(tvb, offset);
 102         if(len&0x03){
 103                 len = (len&0xfc)+4;
 104         }
 105
 106         len += 4;
 107
 108         return len+my_id_len(tvb,offset+len);
 109 }
 110
 111 static int
 112 dissect_stat_stat(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
 113 {
 114         if (tree)
 115         {
 116                 offset = dissect_rpc_string(tvb,pinfo,tree,hf_stat_mon_name,offset,NULL);
 117         }
 118
 119         return offset;
 120 }
 121
 122 static int
 123 dissect_stat_stat_res(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
 124 {
 125         proto_item* sub_item = NULL;
 126         proto_tree* sub_tree = NULL;
 127         gint32 res;
 128         gint32 state;
 129
 130         if (tree) {
 131                 sub_item = proto_tree_add_item(tree, hf_stat_stat_res, tvb,
 132                                 offset, -1, FALSE);
 133                 if (sub_item)
 134                         sub_tree = proto_item_add_subtree(sub_item, ett_stat_stat_res);
 135         }
 136
 137         res = tvb_get_ntohl(tvb, offset);
 138         offset = dissect_rpc_uint32(tvb,pinfo,sub_tree,hf_stat_stat_res_res,offset);
 139
 140         if (res==STAT_SUCC) {
 141                 state = tvb_get_ntohl(tvb, offset);
 142                 offset = dissect_rpc_uint32(tvb,pinfo,sub_tree,hf_stat_stat_res_state,offset);
 143         } else {
 144                 offset += 4;
 145         }
 146
 147         return offset;
 148 }
 149
 150 static int
 151 dissect_stat_my_id(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
 152 {
 153         proto_item* sub_item = NULL;
 154         proto_tree* sub_tree = NULL;
 155
 156         if (tree) {
 157                 sub_item = proto_tree_add_item(tree, hf_stat_my_id, tvb,
 158                                 offset, my_id_len(tvb,offset), FALSE);
 159                 if (sub_item)
 160                         sub_tree = proto_item_add_subtree(sub_item, ett_stat_my_id);
 161         }
 162
 163         offset = dissect_rpc_string(tvb,pinfo,sub_tree,hf_stat_my_id_hostname,offset,NULL);
 164         offset = dissect_rpc_uint32(tvb,pinfo,sub_tree,hf_stat_my_id_prog,offset);
 165         offset = dissect_rpc_uint32(tvb,pinfo,sub_tree,hf_stat_my_id_vers,offset);
 166         offset = dissect_rpc_uint32(tvb,pinfo,sub_tree,hf_stat_my_id_proc,offset);
 167
 168         return offset;
 169 }
 170
 171 static int
 172 dissect_stat_mon_id(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
 173 {
 174         proto_item* sub_item = NULL;
 175         proto_tree* sub_tree = NULL;
 176
 177         if (tree) {
 178                 sub_item = proto_tree_add_item(tree, hf_stat_mon, tvb,
 179                                 offset, mon_id_len(tvb,offset), FALSE);
 180                 if (sub_item)
 181                         sub_tree = proto_item_add_subtree(sub_item, ett_stat_mon);
 182         }
 183
 184
 185         offset = dissect_rpc_string(tvb,pinfo,sub_tree,hf_stat_mon_id_name,offset,NULL);
 186
 187         offset = dissect_stat_my_id(tvb,offset,pinfo,sub_tree);
 188
 189         return offset;
 190 }
 191
 192 static int
 193 dissect_stat_priv(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
 194 {
 195         proto_tree_add_item(tree, hf_stat_priv, tvb, offset, 16, FALSE);
 196         offset += 16;
 197
 198         return offset;
 199 }
 200
 201 static int
 202 dissect_stat_mon(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
 203 {
 204
 205         offset = dissect_stat_mon_id(tvb,offset,pinfo,tree);
 206
 207         offset = dissect_stat_priv(tvb,offset,pinfo,tree);
 208         return offset;
 209 }
 210
 211 static int
 212 dissect_stat_state(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
 213 {
 214         offset = dissect_rpc_uint32(tvb,pinfo,tree,hf_stat_state,offset);
 215
 216         return offset;
 217 }
 218
 219 static int
 220 dissect_stat_notify(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
 221 {
 222         proto_item* sub_item = NULL;
 223         proto_tree* sub_tree = NULL;
 224         int start_offset = offset;
 225
 226         if (tree) {
 227                 sub_item = proto_tree_add_item(tree, hf_stat_stat_chge, tvb,
 228                                 offset, -1, FALSE);
 229                 if (sub_item)
 230                         sub_tree = proto_item_add_subtree(sub_item, ett_stat_stat_chge);
 231         }
 232
 233         offset = dissect_rpc_string(tvb,pinfo,sub_tree,hf_stat_mon_id_name,offset,NULL);
 234
 235         offset = dissect_rpc_uint32(tvb,pinfo,tree,hf_stat_state,offset);
 236
 237         if(sub_item)
 238                 proto_item_set_len(sub_item, offset - start_offset);
 239
 240         return offset;
 241 }
 242
 243 static int
 244 dissect_stat_umon_all(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
 245 {
 246         offset = dissect_stat_my_id(tvb,offset,pinfo,tree);
 247
 248         return offset;
 249 }
 250
 251 /* proc number, "proc name", dissect_request, dissect_reply */
 252 /* NULL as function pointer means: type of arguments is "void". */
 253
 254 static const vsff stat_proc[] = {
 255     { 0, "NULL", NULL, NULL },
 256     { STATPROC_STAT,   "STAT",
 257                 dissect_stat_stat, dissect_stat_stat_res },
 258     { STATPROC_MON,   "MON",
 259                 dissect_stat_mon, dissect_stat_stat_res },
 260     { STATPROC_UNMON, "UNMON",
 261                 dissect_stat_mon_id, dissect_stat_state },
 262     { STATPROC_UNMON_ALL, "UNMON_ALL",
 263                 dissect_stat_umon_all, dissect_stat_state },
 264     { STATPROC_SIMU_CRASH, "SIMU_CRASH",
 265                 NULL, NULL },
 266     { STATPROC_NOTIFY, "NOTIFY",
 267                 dissect_stat_notify, NULL },
 268     { 0, NULL, NULL, NULL }
 269 };
 270 /* end of stat version 1 */
 271
 272
 273 void
 274 proto_register_stat(void)
 275 {
 276         static hf_register_info hf[] = {
 277                 { &hf_stat_mon_name, {
 278                         "Name", "stat.name", FT_STRING, BASE_DEC,
 279                         NULL, 0, "Name", HFILL }},
 280                 { &hf_stat_stat_res, {
 281                         "Status Result", "stat.stat_res", FT_NONE,0,
 282                         NULL, 0, "Status Result", HFILL }},
 283                 { &hf_stat_stat_res_res, {
 284                         "Result", "stat.stat_res.res", FT_UINT32, BASE_DEC,
 285                         VALS(stat_res), 0, "Result", HFILL }},
 286                 { &hf_stat_stat_res_state, {
 287                         "State", "stat.stat_res.state", FT_UINT32, BASE_DEC,
 288                         NULL, 0, "State", HFILL }},
 289                 { &hf_stat_mon, {
 290                         "Monitor", "stat.mon", FT_NONE, 0,
 291                         NULL, 0, "Monitor Host", HFILL }},
 292                 { &hf_stat_mon_id_name, {
 293                         "Monitor ID Name", "stat.mon_id.name", FT_STRING, BASE_DEC,
 294                         NULL, 0, "Monitor ID Name", HFILL }},
 295                 { &hf_stat_my_id, {
 296                         "My ID", "stat.my_id", FT_NONE,0,
 297                         NULL, 0, "My_ID structure", HFILL }},
 298                 { &hf_stat_my_id_hostname, {
 299                         "Hostname", "stat.my_id.hostname", FT_STRING, BASE_DEC,
 300                         NULL, 0, "My_ID Host to callback", HFILL }},
 301                 { &hf_stat_my_id_prog, {
 302                         "Program", "stat.my_id.prog", FT_UINT32, BASE_DEC,
 303                         NULL, 0, "My_ID Program to callback", HFILL }},
 304                 { &hf_stat_my_id_vers, {
 305                         "Version", "stat.my_id.vers", FT_UINT32, BASE_DEC,
 306                         NULL, 0, "My_ID Version of callback", HFILL }},
 307                 { &hf_stat_my_id_proc, {
 308                         "Procedure", "stat.my_id.proc", FT_UINT32, BASE_DEC,
 309                         NULL, 0, "My_ID Procedure to callback", HFILL }},
 310                 { &hf_stat_priv, {
 311                         "Priv", "stat.priv", FT_BYTES, BASE_HEX,
 312                         NULL, 0, "Private client supplied opaque data", HFILL }},
 313                 { &hf_stat_state, {
 314                         "State", "stat.state", FT_UINT32, BASE_DEC,
 315                         NULL, 0, "State of local NSM", HFILL }},
 316                 { &hf_stat_stat_chge, {
 317                         "Status Change", "stat.stat_chge", FT_NONE, 0,
 318                         NULL, 0, "Status Change structure", HFILL }},
 319         };
 320
 321         static gint *ett[] = {
 322                 &ett_stat,
 323                 &ett_stat_stat_res,
 324                 &ett_stat_mon,
 325                 &ett_stat_my_id,
 326                 &ett_stat_stat_chge,
 327         };
 328
 329         proto_stat = proto_register_protocol("Network Status Monitor Protocol", "STAT", "stat");
 330         proto_register_field_array(proto_stat, hf, array_length(hf));
 331         proto_register_subtree_array(ett, array_length(ett));
 332 }
 333
 334 void
 335 proto_reg_handoff_stat(void)
 336 {
 337         /* Register the protocol as RPC */
 338         rpc_init_prog(proto_stat, STAT_PROGRAM, ett_stat);
 339         /* Register the procedure tables */
 340         rpc_init_proc_table(STAT_PROGRAM, 1, stat_proc);
 341 }