/* packet-rmp.c

 * Routines for HP remote management protocol

 * Gilbert Ramirez <jochen@scram.de>

 *

 * Wireshark - Network traffic analyzer

 * By Gerald Combs <gerald@wireshark.org>

 * Copyright 1998 Gerald Combs

 *

 * SPDX-License-Identifier: GPL-2.0-or-later

 */

#include "config.h"

#include <epan/packet.h>

#include "packet-hpext.h"

void proto_register_rmp(void);

void proto_reg_handoff_rmp(void);

static int proto_rmp;

static int hf_rmp_type;

static int hf_rmp_retcode;

static int hf_rmp_seqnum;

static int hf_rmp_sessionid;

static int hf_rmp_version;

static int hf_rmp_machtype;

static int hf_rmp_filename;

static int hf_rmp_offset;

static int hf_rmp_size;

static int hf_rmp_reserved;

static int ett_rmp;

static dissector_handle_t rmp_handle;

/*

 *  Possible values for "rmp_type" fields.

 */

#define RMP_BOOT_REQ    1       /* boot request packet */

#define RMP_BOOT_REPL   129     /* boot reply packet */

#define RMP_READ_REQ    2       /* read request packet */

#define RMP_READ_REPL   130     /* read reply packet */

#define RMP_BOOT_DONE   3       /* boot complete packet */

/*

 *  RMP error codes

 */

#define RMP_E_OKAY      0

#define RMP_E_EOF       2       /* read reply: returned end of file */

#define RMP_E_ABORT     3       /* abort operation */

#define RMP_E_BUSY      4       /* boot reply: server busy */

#define RMP_E_TIMEOUT   5       /* lengthen time out (not implemented) */

#define RMP_E_NOFILE    16      /* boot reply: file does not exist */

#define RMP_E_OPENFILE  17      /* boot reply: file open failed */

#define RMP_E_NODFLT    18      /* boot reply: default file does not exist */

#define RMP_E_OPENDFLT  19      /* boot reply: default file open failed */

#define RMP_E_BADSID    25      /* read reply: bad session ID */

#define RMP_E_BADPACKET 27      /* Bad packet detected */

static const value_string rmp_type_vals[] = {

  { RMP_BOOT_REQ,       "Boot Request" },

  { RMP_BOOT_REPL,      "Boot Reply" },

  { RMP_READ_REQ,       "Read Request" },

  { RMP_READ_REPL,      "Read Reply" },

  { RMP_BOOT_DONE,      "Boot Done" },

  { 0x00,               NULL }

};

static const value_string rmp_error_vals[] = {

  { RMP_E_OKAY,         "OK" },

  { RMP_E_EOF,          "End Of File" },

  { RMP_E_ABORT,        "Abort Operation" },

  { RMP_E_BUSY,         "Server Busy" },

  { RMP_E_TIMEOUT,      "Lengthen Time Out" },

  { RMP_E_NOFILE,       "File Does Not Exist" },

  { RMP_E_OPENFILE,     "File Open Failed" },

  { RMP_E_NODFLT,       "Default File Does Not Exist" },

  { RMP_E_OPENDFLT,     "Default File Open Failed" },

  { RMP_E_BADSID,       "Bad Session Id" },

  { RMP_E_BADPACKET,    "Bad Packet Detected" },

  { 0x00,               NULL }

};

static int

dissect_rmp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)

{

  proto_tree  *rmp_tree = NULL;

  proto_item  *ti = NULL;

  uint8_t   type, len;

  col_set_str(pinfo->cinfo, COL_PROTOCOL, "RMP");

  col_clear(pinfo->cinfo, COL_INFO);

  type = tvb_get_uint8(tvb, 0);

  col_set_str(pinfo->cinfo, COL_INFO,

        val_to_str_const(type, rmp_type_vals, "Unknown Type"));

  ti = proto_tree_add_item(tree, proto_rmp, tvb, 0, -1, ENC_NA);

  rmp_tree = proto_item_add_subtree(ti, ett_rmp);

  proto_tree_add_uint(rmp_tree, hf_rmp_type, tvb, 0, 1, type);

  switch (type) {

    case RMP_BOOT_REQ:

      proto_tree_add_item(rmp_tree,

        hf_rmp_retcode, tvb, 1, 1, ENC_BIG_ENDIAN);

      proto_tree_add_item(rmp_tree,

        hf_rmp_seqnum, tvb, 2, 4, ENC_BIG_ENDIAN);

      proto_tree_add_item(rmp_tree,

        hf_rmp_sessionid, tvb, 6, 2, ENC_BIG_ENDIAN);

      proto_tree_add_item(rmp_tree,

        hf_rmp_version, tvb, 8, 2, ENC_BIG_ENDIAN);

      proto_tree_add_item(rmp_tree,

        hf_rmp_machtype, tvb, 10, 20, ENC_ASCII);

      /* The remaining fields are optional */

      if(!tvb_offset_exists(tvb, 30))

        return 30;

      len = tvb_get_uint8(tvb, 30);

      proto_tree_add_item(rmp_tree,

        hf_rmp_filename, tvb, 30, 1, ENC_ASCII|ENC_BIG_ENDIAN);

      if(tvb_offset_exists(tvb, len+31))

        call_data_dissector(tvb_new_subset_remaining(tvb, len+31),

          pinfo, tree);

      break;

    case RMP_BOOT_REPL:

      proto_tree_add_item(rmp_tree,

        hf_rmp_retcode, tvb, 1, 1, ENC_BIG_ENDIAN);

      proto_tree_add_item(rmp_tree,

        hf_rmp_seqnum, tvb, 2, 4, ENC_BIG_ENDIAN);

      proto_tree_add_item(rmp_tree,

        hf_rmp_sessionid, tvb, 6, 2, ENC_BIG_ENDIAN);

      proto_tree_add_item(rmp_tree,

        hf_rmp_version, tvb, 8, 2, ENC_BIG_ENDIAN);

      len = tvb_get_uint8(tvb, 10);

      proto_tree_add_item(rmp_tree,

        hf_rmp_filename, tvb, 10, 1, ENC_ASCII|ENC_BIG_ENDIAN);

      if(tvb_offset_exists(tvb, len+11))

        call_data_dissector(tvb_new_subset_remaining(tvb, len+11),

          pinfo, tree);

      break;

    case RMP_READ_REQ:

      proto_tree_add_item(rmp_tree,

        hf_rmp_retcode, tvb, 1, 1, ENC_BIG_ENDIAN);

      proto_tree_add_item(rmp_tree,

        hf_rmp_offset, tvb, 2, 4, ENC_BIG_ENDIAN);

      proto_tree_add_item(rmp_tree,

        hf_rmp_sessionid, tvb, 6, 2, ENC_BIG_ENDIAN);

      proto_tree_add_item(rmp_tree,

        hf_rmp_size, tvb, 8, 2, ENC_BIG_ENDIAN);

      if(tvb_offset_exists(tvb, 10))

        call_data_dissector(tvb_new_subset_remaining(tvb, 10),

          pinfo, tree);

      break;

    case RMP_READ_REPL:

      proto_tree_add_item(rmp_tree,

        hf_rmp_retcode, tvb, 1, 1, ENC_BIG_ENDIAN);

      proto_tree_add_item(rmp_tree,

        hf_rmp_offset, tvb, 2, 4, ENC_BIG_ENDIAN);

      proto_tree_add_item(rmp_tree,

        hf_rmp_sessionid, tvb, 6, 2, ENC_BIG_ENDIAN);

      call_data_dissector(tvb_new_subset_remaining(tvb,

        8), pinfo, rmp_tree);

      break;

    case RMP_BOOT_DONE:

      proto_tree_add_item(rmp_tree,

        hf_rmp_retcode, tvb, 1, 1, ENC_BIG_ENDIAN);

      proto_tree_add_item(rmp_tree,

        hf_rmp_reserved, tvb, 2, 4, ENC_BIG_ENDIAN);

      proto_tree_add_item(rmp_tree,

        hf_rmp_sessionid, tvb, 6, 2, ENC_BIG_ENDIAN);

      if(tvb_offset_exists(tvb, 8))

        call_data_dissector(tvb_new_subset_remaining(tvb, 6),

          pinfo, tree);

      break;

    default:

      call_data_dissector(tvb_new_subset_remaining(tvb, 1), pinfo, tree);

  }

  return tvb_captured_length(tvb);

}

void

proto_register_rmp(void)

{

  static hf_register_info hf[] = {

    { &hf_rmp_type,

    { "Type", "rmp.type", FT_UINT8, BASE_HEX,

      VALS(rmp_type_vals), 0x0, NULL, HFILL }},

    { &hf_rmp_retcode,

    { "Returncode", "rmp.retcode", FT_UINT8, BASE_HEX,

      VALS(rmp_error_vals), 0x0, NULL, HFILL }},

    { &hf_rmp_seqnum,

    { "Sequence Number", "rmp.seqnum", FT_UINT32, BASE_HEX,

      NULL, 0x0, NULL, HFILL }},

    { &hf_rmp_sessionid,

    { "Session ID", "rmp.sessionid", FT_UINT16, BASE_HEX,

      NULL, 0x0, NULL, HFILL }},

    { &hf_rmp_version,

    { "Version", "rmp.version", FT_UINT16, BASE_DEC,

      NULL, 0x0, NULL, HFILL }},

    { &hf_rmp_machtype,

    { "Machine Type", "rmp.machtype", FT_STRING, BASE_NONE,

      NULL, 0x0, NULL, HFILL }},

    { &hf_rmp_filename,

    { "Filename", "rmp.filename", FT_UINT_STRING, BASE_NONE,

      NULL, 0x0, NULL, HFILL }},

    { &hf_rmp_offset,

    { "Offset", "rmp.offset", FT_UINT32, BASE_HEX,

      NULL, 0x0, NULL, HFILL }},

    { &hf_rmp_size,

    { "Size", "rmp.size", FT_UINT16, BASE_DEC,

      NULL, 0x0, NULL, HFILL }},

    { &hf_rmp_reserved,

    { "Reserved", "rmp.reserved", FT_UINT32, BASE_HEX,

      NULL, 0x0, NULL, HFILL }},

  };

  static int *ett[] = {

    &ett_rmp,

  };

  proto_rmp = proto_register_protocol("HP Remote Maintenance Protocol", "RMP", "rmp");

  proto_register_field_array(proto_rmp, hf, array_length(hf));

  proto_register_subtree_array(ett, array_length(ett));

  rmp_handle = register_dissector("rmp", dissect_rmp, proto_rmp);

}

void

proto_reg_handoff_rmp(void)

{

  dissector_add_uint("hpext.dxsap", HPEXT_DXSAP, rmp_handle);

  dissector_add_uint("hpext.dxsap", HPEXT_SXSAP, rmp_handle);

}

/*

 * Editor modelines  -  https://www.wireshark.org/tools/modelines.html

 *

 * Local variables:

 * c-basic-offset: 8

 * tab-width: 8

 * indent-tabs-mode: t

 * End:

 *

 * vi: set shiftwidth=8 tabstop=8 noexpandtab:

 * :indentSize=8:tabSize=8:noTabs=false:

 */