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  * Wireshark - Network traffic analyzer
   8  * By Gerald Combs <gerald@wireshark.org>
   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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  24  */
  25
  26 #include "config.h"
  27
  28 #include <glib.h>
  29 #include <epan/packet.h>
  30 #include <epan/etypes.h>
  31
  32 #include "packet-hpext.h"
  33
  34 static dissector_handle_t data_handle;
  35
  36 static int proto_rmp = -1;
  37
  38 static int hf_rmp_type = -1;
  39 static int hf_rmp_retcode = -1;
  40 static int hf_rmp_seqnum = -1;
  41 static int hf_rmp_sessionid = -1;
  42 static int hf_rmp_version = -1;
  43 static int hf_rmp_machtype = -1;
  44 static int hf_rmp_filename = -1;
  45 static int hf_rmp_offset = -1;
  46 static int hf_rmp_size = -1;
  47
  48 static gint ett_rmp = -1;
  49
  50 /*
  51  *  Possible values for "rmp_type" fields.
  52  */
  53
  54 #define RMP_BOOT_REQ    1       /* boot request packet */
  55 #define RMP_BOOT_REPL   129     /* boot reply packet */
  56 #define RMP_READ_REQ    2       /* read request packet */
  57 #define RMP_READ_REPL   130     /* read reply packet */
  58 #define RMP_BOOT_DONE   3       /* boot complete packet */
  59
  60 /*
  61  *  RMP error codes
  62  */
  63
  64 #define RMP_E_OKAY      0
  65 #define RMP_E_EOF       2       /* read reply: returned end of file */
  66 #define RMP_E_ABORT     3       /* abort operation */
  67 #define RMP_E_BUSY      4       /* boot reply: server busy */
  68 #define RMP_E_TIMEOUT   5       /* lengthen time out (not implemented) */
  69 #define RMP_E_NOFILE    16      /* boot reply: file does not exist */
  70 #define RMP_E_OPENFILE  17      /* boot reply: file open failed */
  71 #define RMP_E_NODFLT    18      /* boot reply: default file does not exist */
  72 #define RMP_E_OPENDFLT  19      /* boot reply: default file open failed */
  73 #define RMP_E_BADSID    25      /* read reply: bad session ID */
  74 #define RMP_E_BADPACKET 27      /* Bad packet detected */
  75
  76 const value_string rmp_type_vals[] = {
  77         { RMP_BOOT_REQ,       "Boot Request" },
  78         { RMP_BOOT_REPL,      "Boot Reply" },
  79         { RMP_READ_REQ,       "Read Request" },
  80         { RMP_READ_REPL,      "Read Reply" },
  81         { RMP_BOOT_DONE,      "Boot Done" },
  82         { 0x00,               NULL }
  83 };
  84
  85 const value_string rmp_error_vals[] = {
  86         { RMP_E_OKAY,         "OK" },
  87         { RMP_E_EOF,          "End Of File" },
  88         { RMP_E_ABORT,        "Abort Operation" },
  89         { RMP_E_BUSY,         "Server Busy" },
  90         { RMP_E_TIMEOUT,      "Lengthen Time Out" },
  91         { RMP_E_NOFILE,       "File Does Not Exist" },
  92         { RMP_E_OPENFILE,     "File Open Failed" },
  93         { RMP_E_NODFLT,       "Default File Does Not Exist" },
  94         { RMP_E_OPENDFLT,     "Default File Open Failed" },
  95         { RMP_E_BADSID,       "Bad Session Id" },
  96         { RMP_E_OPENDFLT,     "Bad Packet Detected" },
  97         { 0x00,               NULL }
  98 };
  99
 100 static void
 101 dissect_rmp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 102 {
 103         proto_tree      *rmp_tree = NULL;
 104         proto_item      *ti = NULL;
 105         guint8          type, len;
 106
 107         col_set_str(pinfo->cinfo, COL_PROTOCOL, "RMP");
 108
 109         col_clear(pinfo->cinfo, COL_INFO);
 110
 111         type = tvb_get_guint8(tvb, 0);
 112
 113         col_set_str(pinfo->cinfo, COL_INFO,
 114                     val_to_str_const(type, rmp_type_vals, "Unknown Type"));
 115
 116         if (tree) {
 117                 ti = proto_tree_add_item(tree, proto_rmp, tvb, 0, -1, ENC_NA);
 118                 rmp_tree = proto_item_add_subtree(ti, ett_rmp);
 119                 proto_tree_add_uint(rmp_tree, hf_rmp_type, tvb, 0, 1, type);
 120
 121                 switch (type) {
 122                         case RMP_BOOT_REQ:
 123                                 proto_tree_add_item(rmp_tree,
 124                                     hf_rmp_retcode, tvb, 1, 1, ENC_BIG_ENDIAN);
 125                                 proto_tree_add_item(rmp_tree,
 126                                     hf_rmp_seqnum, tvb, 2, 4, ENC_BIG_ENDIAN);
 127                                 proto_tree_add_item(rmp_tree,
 128                                     hf_rmp_sessionid, tvb, 6, 2, ENC_BIG_ENDIAN);
 129                                 proto_tree_add_item(rmp_tree,
 130                                     hf_rmp_version, tvb, 8, 2, ENC_BIG_ENDIAN);
 131                                 proto_tree_add_item(rmp_tree,
 132                                     hf_rmp_machtype, tvb, 10, 20, ENC_ASCII|ENC_NA);
 133                                 /* The remaining fields are optional */
 134                                 if(!tvb_offset_exists(tvb, 30))
 135                                         return;
 136                                 len = tvb_get_guint8(tvb, 30);
 137                                 proto_tree_add_item(rmp_tree,
 138                                     hf_rmp_filename, tvb, 30, 1, ENC_ASCII|ENC_NA);
 139                                 if(tvb_offset_exists(tvb, len+31))
 140                                         call_dissector(data_handle,
 141                                             tvb_new_subset_remaining(tvb, len+31),
 142                                             pinfo, tree);
 143                                 break;
 144
 145                         case RMP_BOOT_REPL:
 146                                 proto_tree_add_item(rmp_tree,
 147                                     hf_rmp_retcode, tvb, 1, 1, ENC_BIG_ENDIAN);
 148                                 proto_tree_add_item(rmp_tree,
 149                                     hf_rmp_seqnum, tvb, 2, 4, ENC_BIG_ENDIAN);
 150                                 proto_tree_add_item(rmp_tree,
 151                                     hf_rmp_sessionid, tvb, 6, 2, ENC_BIG_ENDIAN);
 152                                 proto_tree_add_item(rmp_tree,
 153                                     hf_rmp_version, tvb, 8, 2, ENC_BIG_ENDIAN);
 154                                 len = tvb_get_guint8(tvb, 10);
 155                                 proto_tree_add_item(rmp_tree,
 156                                     hf_rmp_filename, tvb, 10, 1, ENC_ASCII|ENC_NA);
 157                                 if(tvb_offset_exists(tvb, len+11))
 158                                         call_dissector(data_handle,
 159                                             tvb_new_subset_remaining(tvb, len+11),
 160                                             pinfo, tree);
 161                                 break;
 162
 163                         case RMP_READ_REQ:
 164                                 proto_tree_add_item(rmp_tree,
 165                                     hf_rmp_retcode, tvb, 1, 1, ENC_BIG_ENDIAN);
 166                                 proto_tree_add_item(rmp_tree,
 167                                     hf_rmp_offset, tvb, 2, 4, ENC_BIG_ENDIAN);
 168                                 proto_tree_add_item(rmp_tree,
 169                                     hf_rmp_sessionid, tvb, 6, 2, ENC_BIG_ENDIAN);
 170                                 proto_tree_add_item(rmp_tree,
 171                                     hf_rmp_size, tvb, 8, 2, ENC_BIG_ENDIAN);
 172                                 if(tvb_offset_exists(tvb, 10))
 173                                         call_dissector(data_handle,
 174                                             tvb_new_subset_remaining(tvb, 10),
 175                                             pinfo, tree);
 176                                 break;
 177
 178                         case RMP_READ_REPL:
 179                                 proto_tree_add_item(rmp_tree,
 180                                     hf_rmp_retcode, tvb, 1, 1, ENC_BIG_ENDIAN);
 181                                 proto_tree_add_item(rmp_tree,
 182                                     hf_rmp_offset, tvb, 2, 4, ENC_BIG_ENDIAN);
 183                                 proto_tree_add_item(rmp_tree,
 184                                     hf_rmp_sessionid, tvb, 6, 2, ENC_BIG_ENDIAN);
 185                                 call_dissector(data_handle, tvb_new_subset_remaining(tvb,
 186                                     8), pinfo, rmp_tree);
 187                                 break;
 188
 189                         case RMP_BOOT_DONE:
 190                                 proto_tree_add_item(rmp_tree,
 191                                     hf_rmp_retcode, tvb, 1, 1, ENC_BIG_ENDIAN);
 192                                 proto_tree_add_text(rmp_tree,
 193                                     tvb, 2, 4, "Reserved");
 194                                 proto_tree_add_item(rmp_tree,
 195                                     hf_rmp_sessionid, tvb, 6, 2, ENC_BIG_ENDIAN);
 196                                 if(tvb_offset_exists(tvb, 8))
 197                                         call_dissector(data_handle,
 198                                             tvb_new_subset_remaining(tvb, 6),
 199                                             pinfo, tree);
 200                                 break;
 201                         default:
 202                                 call_dissector(data_handle, tvb_new_subset_remaining(tvb,
 203                                     1), pinfo, tree);
 204                 }
 205         }
 206 }
 207
 208 void
 209 proto_register_rmp(void)
 210 {
 211         static hf_register_info hf[] = {
 212                 { &hf_rmp_type,
 213                 { "Type", "rmp.type", FT_UINT8, BASE_HEX,
 214                         VALS(rmp_type_vals), 0x0, NULL, HFILL }},
 215                 { &hf_rmp_retcode,
 216                 { "Returncode", "rmp.retcode", FT_UINT8, BASE_HEX,
 217                         VALS(rmp_error_vals), 0x0, NULL, HFILL }},
 218                 { &hf_rmp_seqnum,
 219                 { "Sequence Number", "rmp.seqnum", FT_UINT32, BASE_HEX,
 220                         NULL, 0x0, NULL, HFILL }},
 221                 { &hf_rmp_sessionid,
 222                 { "Session ID", "rmp.sessionid", FT_UINT16, BASE_HEX,
 223                         NULL, 0x0, NULL, HFILL }},
 224                 { &hf_rmp_version,
 225                 { "Version", "rmp.version", FT_UINT16, BASE_DEC,
 226                         NULL, 0x0, NULL, HFILL }},
 227                 { &hf_rmp_machtype,
 228                 { "Machine Type", "rmp.machtype", FT_STRING, BASE_NONE,
 229                         NULL, 0x0, NULL, HFILL }},
 230                 { &hf_rmp_filename,
 231                 { "Filename", "rmp.filename", FT_UINT_STRING, BASE_NONE,
 232                         NULL, 0x0, NULL, HFILL }},
 233                 { &hf_rmp_offset,
 234                 { "Offset", "rmp.offset", FT_UINT32, BASE_HEX,
 235                         NULL, 0x0, NULL, HFILL }},
 236                 { &hf_rmp_size,
 237                 { "Size", "rmp.size", FT_UINT16, BASE_DEC,
 238                         NULL, 0x0, NULL, HFILL }},
 239         };
 240         static gint *ett[] = {
 241                 &ett_rmp,
 242         };
 243
 244         proto_rmp = proto_register_protocol(
 245             "HP Remote Maintenance Protocol", "RMP", "rmp");
 246         proto_register_field_array(proto_rmp, hf, array_length(hf));
 247         proto_register_subtree_array(ett, array_length(ett));
 248
 249         register_dissector("rmp", dissect_rmp, proto_rmp);
 250 }
 251
 252 void
 253 proto_reg_handoff_rmp(void)
 254 {
 255         dissector_handle_t rmp_handle;
 256
 257         data_handle = find_dissector("data");
 258
 259         rmp_handle = find_dissector("rmp");
 260         dissector_add_uint("hpext.dxsap", HPEXT_DXSAP, rmp_handle);
 261         dissector_add_uint("hpext.dxsap", HPEXT_SXSAP, rmp_handle);
 262 }