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packet-bootparams.c

/* packet-bootparams.c
 * Routines for bootparams dissection
 *
 * $Id: packet-bootparams.c 18196 2006-05-21 04:49:01Z sahlberg $
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * Copied from packet-smb.c
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <string.h>
#include <glib.h>

#include "packet-rpc.h"
#include "packet-bootparams.h"

static int proto_bootparams = -1;
static int hf_bootparams_procedure_v1 = -1;
static int hf_bootparams_host = -1;
static int hf_bootparams_domain = -1;
static int hf_bootparams_fileid = -1;
static int hf_bootparams_filepath = -1;
static int hf_bootparams_hostaddr = -1;
static int hf_bootparams_routeraddr = -1;
static int hf_bootparams_addresstype = -1;

static gint ett_bootparams = -1;


static const value_string addr_type[] =
{
      {     1,    "IPv4-ADDR" },
      {     0,    NULL        }
};

static int
dissect_bp_address(tvbuff_t *tvb, int offset, proto_tree *tree, int hfindex)
{
      guint32 type;
      guint32 ipaddr;


      type = tvb_get_ntohl(tvb, offset);

      offset = dissect_rpc_uint32(tvb, tree, hf_bootparams_addresstype, offset);

      switch(type){
      case 1:
            ipaddr = ((tvb_get_guint8(tvb, offset+3 )&0xff)<<24)
                  |((tvb_get_guint8(tvb, offset+7 )&0xff)<<16)
                  |((tvb_get_guint8(tvb, offset+11)&0xff)<<8 )
                  |((tvb_get_guint8(tvb, offset+15)&0xff) );
            proto_tree_add_ipv4(tree, hfindex, tvb,
                  offset, 16, g_ntohl(ipaddr));
            offset += 16;
            break;

      default:
            break;
      }

      return offset;
}


static int
dissect_getfile_call(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree)
{
      if ( tree )
      {
            offset = dissect_rpc_string(tvb, tree, hf_bootparams_host, offset, NULL);
            offset = dissect_rpc_string(tvb, tree, hf_bootparams_fileid, offset, NULL);
      }

      return offset;
}

static int
dissect_getfile_reply(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree)
{
      if ( tree )
      {
            offset = dissect_rpc_string(tvb, tree, hf_bootparams_host, offset, NULL);
            offset = dissect_bp_address(tvb, offset, tree, hf_bootparams_hostaddr);
            offset = dissect_rpc_string(tvb, tree, hf_bootparams_filepath, offset, NULL);
      }

      return offset;
}

static int
dissect_whoami_call(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree)
{
      if ( tree )
      {
            offset = dissect_bp_address(tvb, offset, tree, hf_bootparams_hostaddr);
      }

      return offset;
}

static int
dissect_whoami_reply(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree)
{
      if ( tree )
      {
            offset = dissect_rpc_string(tvb, tree, hf_bootparams_host, offset, NULL);
            offset = dissect_rpc_string(tvb, tree, hf_bootparams_domain, offset, NULL);
            offset = dissect_bp_address(tvb, offset, tree, hf_bootparams_routeraddr);
      }

      return offset;
}

/* proc number, "proc name", dissect_request, dissect_reply */
/* NULL as function pointer means: type of arguments is "void". */
static const vsff bootparams1_proc[] = {
      { BOOTPARAMSPROC_NULL, "NULL",
            NULL, NULL },
      { BOOTPARAMSPROC_WHOAMI, "WHOAMI",
            dissect_whoami_call, dissect_whoami_reply },
      { BOOTPARAMSPROC_GETFILE, "GETFILE",
            dissect_getfile_call, dissect_getfile_reply },
      { 0, NULL, NULL, NULL }
};
/* end of Bootparams version 1 */

static const value_string bootparams1_proc_vals[] = {
      { BOOTPARAMSPROC_NULL, "NULL" },
      { BOOTPARAMSPROC_WHOAMI, "WHOAMI" },
      { BOOTPARAMSPROC_GETFILE, "GETFILE" },
      { 0, NULL }
};

void
proto_register_bootparams(void)
{
      static hf_register_info hf[] = {
            { &hf_bootparams_procedure_v1, {
                  "V1 Procedure", "bootparams.procedure_v1", FT_UINT32, BASE_DEC,
                  VALS(bootparams1_proc_vals), 0, "V1 Procedure", HFILL }},
            { &hf_bootparams_host, {
                  "Client Host", "bootparams.host", FT_STRING, BASE_DEC,
                  NULL, 0, "Client Host", HFILL }},
            { &hf_bootparams_domain, {
                  "Client Domain", "bootparams.domain", FT_STRING, BASE_DEC,
                  NULL, 0, "Client Domain", HFILL }},
            { &hf_bootparams_fileid, {
                  "File ID", "bootparams.fileid", FT_STRING, BASE_DEC,
                  NULL, 0, "File ID", HFILL }},
            { &hf_bootparams_filepath, {
                  "File Path", "bootparams.filepath", FT_STRING, BASE_DEC,
                  NULL, 0, "File Path", HFILL }},
            { &hf_bootparams_hostaddr, {
                  "Client Address", "bootparams.hostaddr", FT_IPv4, BASE_DEC,
                  NULL, 0, "Address", HFILL }},
            { &hf_bootparams_routeraddr, {
                  "Router Address", "bootparams.routeraddr", FT_IPv4, BASE_DEC,
                  NULL, 0, "Router Address", HFILL }},
            { &hf_bootparams_addresstype, {
                  "Address Type", "bootparams.type", FT_UINT32, BASE_DEC,
                  VALS(addr_type), 0, "Address Type", HFILL }},
      };
      static gint *ett[] = {
            &ett_bootparams,
      };

      proto_bootparams = proto_register_protocol("Boot Parameters",
          "BOOTPARAMS", "bootparams");
      proto_register_field_array(proto_bootparams, hf, array_length(hf));
      proto_register_subtree_array(ett, array_length(ett));
}

void
proto_reg_handoff_bootparams(void)
{
      /* Register the protocol as RPC */
      rpc_init_prog(proto_bootparams, BOOTPARAMS_PROGRAM, ett_bootparams);
      /* Register the procedure tables */
      rpc_init_proc_table(BOOTPARAMS_PROGRAM, 1, bootparams1_proc, hf_bootparams_procedure_v1);
}

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