epan/dissectors/packet-rmp.c

   1 /* packet-rmp.c
   2  * Routines for HP remote management protocol
   3  * Gilbert Ramirez <jochen@scram.de>
   4  *
   5  * $Id$
   6  *
   7  * Ethereal - Network traffic analyzer
   8  * By Gerald Combs <gerald@ethereal.com>
   9  * Copyright 1998 Gerald Combs
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License
  13  * as published by the Free Software Foundation; either version 2
  14  * of the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  24  */
  25
  26 #ifdef HAVE_CONFIG_H
  27 # include "config.h"
  28 #endif
  29
  30 #include <glib.h>
  31 #include <epan/packet.h>
  32 #include "etypes.h"
  33
  34 #include "packet-hpext.h"
  35
  36 static dissector_handle_t data_handle;
  37
  38 static int proto_rmp = -1;
  39
  40 static int hf_rmp_type = -1;
  41 static int hf_rmp_retcode = -1;
  42 static int hf_rmp_seqnum = -1;
  43 static int hf_rmp_sessionid = -1;
  44 static int hf_rmp_version = -1;
  45 static int hf_rmp_machtype = -1;
  46 static int hf_rmp_filename = -1;
  47 static int hf_rmp_offset = -1;
  48 static int hf_rmp_size = -1;
  49
  50 static gint ett_rmp = -1;
  51
  52 /*
  53  *  Possible values for "rmp_type" fields.
  54  */
  55
  56 #define RMP_BOOT_REQ    1       /* boot request packet */
  57 #define RMP_BOOT_REPL   129     /* boot reply packet */
  58 #define RMP_READ_REQ    2       /* read request packet */
  59 #define RMP_READ_REPL   130     /* read reply packet */
  60 #define RMP_BOOT_DONE   3       /* boot complete packet */
  61
  62 /*
  63  *  RMP error codes
  64  */
  65
  66 #define RMP_E_OKAY      0
  67 #define RMP_E_EOF       2       /* read reply: returned end of file */
  68 #define RMP_E_ABORT     3       /* abort operation */
  69 #define RMP_E_BUSY      4       /* boot reply: server busy */
  70 #define RMP_E_TIMEOUT   5       /* lengthen time out (not implemented) */
  71 #define RMP_E_NOFILE    16      /* boot reply: file does not exist */
  72 #define RMP_E_OPENFILE  17      /* boot reply: file open failed */
  73 #define RMP_E_NODFLT    18      /* boot reply: default file does not exist */
  74 #define RMP_E_OPENDFLT  19      /* boot reply: default file open failed */
  75 #define RMP_E_BADSID    25      /* read reply: bad session ID */
  76 #define RMP_E_BADPACKET 27      /* Bad packet detected */
  77
  78 const value_string rmp_type_vals[] = {
  79         { RMP_BOOT_REQ,       "Boot Request" },
  80         { RMP_BOOT_REPL,      "Boot Reply" },
  81         { RMP_READ_REQ,       "Read Request" },
  82         { RMP_READ_REPL,      "Read Reply" },
  83         { RMP_BOOT_DONE,      "Boot Done" },
  84         { 0x00,               NULL }
  85 };
  86
  87 const value_string rmp_error_vals[] = {
  88         { RMP_E_OKAY,         "OK" },
  89         { RMP_E_EOF,          "End Of File" },
  90         { RMP_E_ABORT,        "Abort Operation" },
  91         { RMP_E_BUSY,         "Server Busy" },
  92         { RMP_E_TIMEOUT,      "Lengthen Time Out" },
  93         { RMP_E_NOFILE,       "File Does Not Exist" },
  94         { RMP_E_OPENFILE,     "File Open Failed" },
  95         { RMP_E_NODFLT,       "Default File Does Not Exist" },
  96         { RMP_E_OPENDFLT,     "Default File Open Failed" },
  97         { RMP_E_BADSID,       "Bad Session Id" },
  98         { RMP_E_OPENDFLT,     "Bad Packet Detected" },
  99         { 0x00,               NULL }
 100 };
 101
 102 static void
 103 dissect_rmp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 104 {
 105         proto_tree      *rmp_tree = NULL;
 106         proto_item      *ti = NULL;
 107         guint8          type, len;
 108
 109         if (check_col(pinfo->cinfo, COL_PROTOCOL)) {
 110                 col_set_str(pinfo->cinfo, COL_PROTOCOL, "RMP");
 111         }
 112
 113         if (check_col(pinfo->cinfo, COL_INFO)) {
 114                 col_clear(pinfo->cinfo, COL_INFO);
 115         }
 116
 117         type = tvb_get_guint8(tvb, 0);
 118
 119         if (check_col(pinfo->cinfo, COL_INFO)) {
 120                 col_set_str(pinfo->cinfo, COL_INFO,
 121                     val_to_str(type, rmp_type_vals, "Unknown Type"));
 122         }
 123
 124         if (tree) {
 125                 ti = proto_tree_add_item(tree, proto_rmp, tvb, 0, -1, FALSE);
 126                 rmp_tree = proto_item_add_subtree(ti, ett_rmp);
 127                 proto_tree_add_uint(rmp_tree, hf_rmp_type, tvb, 0, 1, type);
 128
 129                 switch (type) {
 130                         case RMP_BOOT_REQ:
 131                                 proto_tree_add_item(rmp_tree,
 132                                     hf_rmp_retcode, tvb, 1, 1, FALSE);
 133                                 proto_tree_add_item(rmp_tree,
 134                                     hf_rmp_seqnum, tvb, 2, 4, FALSE);
 135                                 proto_tree_add_item(rmp_tree,
 136                                     hf_rmp_sessionid, tvb, 6, 2, FALSE);
 137                                 proto_tree_add_item(rmp_tree,
 138                                     hf_rmp_version, tvb, 8, 2, FALSE);
 139                                 proto_tree_add_item(rmp_tree,
 140                                     hf_rmp_machtype, tvb, 10, 20, FALSE);
 141                                 /* The remaining fields are optional */
 142                                 if(!tvb_offset_exists(tvb, 30))
 143                                         return;
 144                                 len = tvb_get_guint8(tvb, 30);
 145                                 proto_tree_add_item(rmp_tree,
 146                                     hf_rmp_filename, tvb, 30, 1, FALSE);
 147                                 if(tvb_offset_exists(tvb, len+31))
 148                                         call_dissector(data_handle,
 149                                             tvb_new_subset(tvb, len+31, -1, -1),
 150                                             pinfo, tree);
 151                                 break;
 152
 153                         case RMP_BOOT_REPL:
 154                                 proto_tree_add_item(rmp_tree,
 155                                     hf_rmp_retcode, tvb, 1, 1, FALSE);
 156                                 proto_tree_add_item(rmp_tree,
 157                                     hf_rmp_seqnum, tvb, 2, 4, FALSE);
 158                                 proto_tree_add_item(rmp_tree,
 159                                     hf_rmp_sessionid, tvb, 6, 2, FALSE);
 160                                 proto_tree_add_item(rmp_tree,
 161                                     hf_rmp_version, tvb, 8, 2, FALSE);
 162                                 len = tvb_get_guint8(tvb, 10);
 163                                 proto_tree_add_item(rmp_tree,
 164                                     hf_rmp_filename, tvb, 10, 1, FALSE);
 165                                 if(tvb_offset_exists(tvb, len+11))
 166                                         call_dissector(data_handle,
 167                                             tvb_new_subset(tvb, len+11, -1, -1),
 168                                             pinfo, tree);
 169                                 break;
 170
 171                         case RMP_READ_REQ:
 172                                 proto_tree_add_item(rmp_tree,
 173                                     hf_rmp_retcode, tvb, 1, 1, FALSE);
 174                                 proto_tree_add_item(rmp_tree,
 175                                     hf_rmp_offset, tvb, 2, 4, FALSE);
 176                                 proto_tree_add_item(rmp_tree,
 177                                     hf_rmp_sessionid, tvb, 6, 2, FALSE);
 178                                 proto_tree_add_item(rmp_tree,
 179                                     hf_rmp_size, tvb, 8, 2, FALSE);
 180                                 if(tvb_offset_exists(tvb, 10))
 181                                         call_dissector(data_handle,
 182                                             tvb_new_subset(tvb, 10, -1, -1),
 183                                             pinfo, tree);
 184                                 break;
 185
 186                         case RMP_READ_REPL:
 187                                 proto_tree_add_item(rmp_tree,
 188                                     hf_rmp_retcode, tvb, 1, 1, FALSE);
 189                                 proto_tree_add_item(rmp_tree,
 190                                     hf_rmp_offset, tvb, 2, 4, FALSE);
 191                                 proto_tree_add_item(rmp_tree,
 192                                     hf_rmp_sessionid, tvb, 6, 2, FALSE);
 193                                 call_dissector(data_handle, tvb_new_subset(tvb,
 194                                     8, -1, -1), pinfo, rmp_tree);
 195                                 break;
 196
 197                         case RMP_BOOT_DONE:
 198                                 proto_tree_add_item(rmp_tree,
 199                                     hf_rmp_retcode, tvb, 1, 1, FALSE);
 200                                 proto_tree_add_text(rmp_tree,
 201                                     tvb, 2, 4, "Reserved");
 202                                 proto_tree_add_item(rmp_tree,
 203                                     hf_rmp_sessionid, tvb, 6, 2, FALSE);
 204                                 if(tvb_offset_exists(tvb, 8))
 205                                         call_dissector(data_handle,
 206                                             tvb_new_subset(tvb, 6, -1, -1),
 207                                             pinfo, tree);
 208                                 break;
 209                         default:
 210                                 call_dissector(data_handle, tvb_new_subset(tvb,
 211                                     1, -1, -1), pinfo, tree);
 212                 }
 213         }
 214 }
 215
 216 void
 217 proto_register_rmp(void)
 218 {
 219         static hf_register_info hf[] = {
 220                 { &hf_rmp_type,
 221                 { "Type", "rmp.type", FT_UINT8, BASE_HEX,
 222                         VALS(rmp_type_vals), 0x0, "", HFILL }},
 223                 { &hf_rmp_retcode,
 224                 { "Returncode", "rmp.retcode", FT_UINT8, BASE_HEX,
 225                         VALS(rmp_error_vals), 0x0, "", HFILL }},
 226                 { &hf_rmp_seqnum,
 227                 { "Sequence Number", "rmp.seqnum", FT_UINT32, BASE_HEX,
 228                         NULL, 0x0, "", HFILL }},
 229                 { &hf_rmp_sessionid,
 230                 { "Session ID", "rmp.sessionid", FT_UINT16, BASE_HEX,
 231                         NULL, 0x0, "", HFILL }},
 232                 { &hf_rmp_version,
 233                 { "Version", "rmp.version", FT_UINT16, BASE_DEC,
 234                         NULL, 0x0, "", HFILL }},
 235                 { &hf_rmp_machtype,
 236                 { "Machine Type", "rmp.machtype", FT_STRING, BASE_DEC,
 237                         NULL, 0x0, "", HFILL }},
 238                 { &hf_rmp_filename,
 239                 { "Filename", "rmp.filename", FT_UINT_STRING, BASE_DEC,
 240                         NULL, 0x0, "", HFILL }},
 241                 { &hf_rmp_offset,
 242                 { "Offset", "rmp.offset", FT_UINT32, BASE_HEX,
 243                         NULL, 0x0, "", HFILL }},
 244                 { &hf_rmp_size,
 245                 { "Size", "rmp.size", FT_UINT16, BASE_DEC,
 246                         NULL, 0x0, "", HFILL }},
 247         };
 248         static gint *ett[] = {
 249                 &ett_rmp,
 250         };
 251
 252         proto_rmp = proto_register_protocol(
 253             "HP Remote Maintenance Protocol", "RMP", "rmp");
 254         proto_register_field_array(proto_rmp, hf, array_length(hf));
 255         proto_register_subtree_array(ett, array_length(ett));
 256
 257         register_dissector("rmp", dissect_rmp, proto_rmp);
 258 }
 259
 260 void
 261 proto_reg_handoff_rmp(void)
 262 {
 263         dissector_handle_t rmp_handle;
 264
 265         data_handle = find_dissector("data");
 266
 267         rmp_handle = find_dissector("rmp");
 268         dissector_add("hpext.dxsap", HPEXT_DXSAP, rmp_handle);
 269         dissector_add("hpext.dxsap", HPEXT_SXSAP, rmp_handle);
 270 }