/* packet-componentstatus.c

 * Routines for the Component Status Protocol of the

 * RSPLIB RSerPool implementation

 * https://www.uni-due.de/~be0001/rserpool/

 *

 * Copyright 2006-2021 by Thomas Dreibholz <dreibh [AT] iem.uni-due.de>

 *

 * Wireshark - Network traffic analyzer

 * By Gerald Combs <gerald@wireshark.org>

 * Copyright 1998 Gerald Combs

 *

 * Copied from README.developer

 *

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

 */

#include "config.h"

#include <epan/packet.h>

#include <epan/stat_tap_ui.h>

#include <epan/tfs.h>

#include <wsutil/array.h>

#include "packet-sctp.h"

#include <epan/iana-info.h>

void proto_register_componentstatusprotocol(void);

void proto_reg_handoff_componentstatusprotocol(void);

static dissector_handle_t componentstatusprotocol_handle;

/* Initialize the protocol and registered fields */

static int proto_componentstatusprotocol;

static int tap_componentstatusprotocol   = -1;

/* Initialize the subtree pointers */

static int ett_componentstatusprotocol;

static int ett_message_flags;

static int ett_message_sender_id;

static int ett_cspreport_association_receiver_id;

static int ett_association;

#define COMPONENTSTATUSPROTOCOL_PORT    2960   /* Not IANA registered */

#define COMPONENTSTATUSPROTOCOL_VERSION 0x0200

static int hf_message_type;

static int hf_message_flags;

static int hf_message_flags_final_bit;

static int hf_message_length;

static int hf_message_version;

static int hf_message_sender_id;

static int hf_message_sender_id_group;

static int hf_message_sender_id_object;

static int hf_message_sender_timestamp;

static uint64_t componentstatusprotocol_total_msgs;

static uint64_t componentstatusprotocol_total_bytes;

#define COMPONENTSTATUS_REPORT 0x01

static const value_string message_type_values[] = {

  { COMPONENTSTATUS_REPORT, "ComponentStatus Report" },

  { 0, NULL }

};

static int hf_cspreport_report_interval;

static int hf_cspreport_location;

static int hf_cspreport_status;

static int hf_cspreport_workload;

static int hf_cspreport_associations;

#define CSPF_FINAL (1 << 0)

static const true_false_string message_flags_final_bit = {

  "Final message",

  "Not final message"

};

#define CID_GROUP_UNKNOWN     0x0000

#define CID_GROUP_REGISTRAR   0x0001

#define CID_GROUP_POOLELEMENT 0x0002

#define CID_GROUP_POOLUSER    0x0003

#define CID_GROUP(id)  (((uint64_t) id >> 56) & (0xffffULL)

#define CID_OBJECT(id) (((uint64_t) id & 0xffffffffffffffULL)

static const value_string group_values[] = {

  { CID_GROUP_UNKNOWN,     "Unknown" },

  { CID_GROUP_REGISTRAR,   "Registrar" },

  { CID_GROUP_POOLELEMENT, "Pool Element" },

  { CID_GROUP_POOLUSER,    "Pool User" },

  { 0, NULL }

};

#define CSR_GET_WORKLOAD(w) ((w == 0xffff) ? -1.0 : (float)(w / (float)0xfffe))

static int hf_cspreport_association_receiver_id;

static int hf_cspreport_association_receiver_id_group;

static int hf_cspreport_association_receiver_id_object;

static int hf_cspreport_association_duration;

static int hf_cspreport_association_flags;

static int hf_cspreport_association_protocolid;

static int hf_cspreport_association_ppid;

/* Setup list of header fields */

static hf_register_info hf[] = {

  { &hf_message_type,                             { "Type",            "componentstatusprotocol.message_type",                         FT_UINT8,  BASE_DEC, VALS(message_type_values), 0x0, NULL, HFILL } },

  { &hf_message_flags,                            { "Flags",           "componentstatusprotocol.message_flags",                        FT_UINT8,  BASE_DEC, NULL,                      0x0, NULL, HFILL } },

  { &hf_message_flags_final_bit,                  { "F-Bit",           "componentstatusprotocol.message_final_bit",                    FT_BOOLEAN, 8, TFS(&message_flags_final_bit),   CSPF_FINAL, NULL, HFILL } },

  { &hf_message_length,                           { "Length",          "componentstatusprotocol.message_length",                       FT_UINT16, BASE_DEC, NULL,                      0x0, NULL, HFILL } },

  { &hf_message_version,                          { "Version",         "componentstatusprotocol.message_version",                      FT_UINT32, BASE_HEX, NULL,                      0x0, NULL, HFILL } },

  { &hf_message_sender_id,                        { "SenderID",        "componentstatusprotocol.message_sender_id",                    FT_UINT64, BASE_HEX, NULL,                      0x0, NULL, HFILL } },

  { &hf_message_sender_id_group,                  { "Group",           "componentstatusprotocol.message_sender_id.group",              FT_UINT16, BASE_HEX, VALS(group_values),        0x0, NULL, HFILL } },

  { &hf_message_sender_id_object,                 { "Object",          "componentstatusprotocol.message_sender_id.object",             FT_UINT64, BASE_HEX, NULL,                      0x0, NULL, HFILL } },

  { &hf_message_sender_timestamp,                 { "SenderTimeStamp", "componentstatusprotocol.message_sendertimestamp",              FT_RELATIVE_TIME, BASE_NONE, NULL,              0x0, NULL, HFILL } },

  { &hf_cspreport_report_interval,                { "ReportInterval",  "componentstatusprotocol.componentstatusreport_reportinterval", FT_RELATIVE_TIME, BASE_NONE, NULL,              0x0, NULL, HFILL } },

  { &hf_cspreport_location,                       { "Location",        "componentstatusprotocol.componentstatusreport_location",       FT_STRING, BASE_NONE, NULL,                     0x0, NULL, HFILL } },

  { &hf_cspreport_status,                         { "Status",          "componentstatusprotocol.componentstatusreport_status",         FT_STRING, BASE_NONE, NULL,                     0x0, NULL, HFILL } },

  { &hf_cspreport_workload,                       { "Workload",        "componentstatusprotocol.componentstatusreport_workload",       FT_FLOAT,  BASE_NONE, NULL,                     0x0, NULL, HFILL } },

  { &hf_cspreport_associations,                   { "Associations",    "componentstatusprotocol.componentstatusreport_associations",   FT_UINT16, BASE_DEC, NULL,                      0x0, NULL, HFILL } },

  { &hf_cspreport_association_receiver_id,        { "ReceiverID", "componentstatusprotocol.componentassociation_receiver_id",          FT_UINT64, BASE_HEX, NULL,                      0x0, NULL, HFILL } },

  { &hf_cspreport_association_receiver_id_group,  { "Group",      "componentstatusprotocol.componentassociation_receiver_id.group",    FT_UINT16, BASE_HEX, VALS(group_values),        0x0, NULL, HFILL } },

  { &hf_cspreport_association_receiver_id_object, { "Object",     "componentstatusprotocol.componentassociation_receiver_id.object",   FT_UINT64, BASE_HEX, NULL,                      0x0, NULL, HFILL } },

  { &hf_cspreport_association_duration,           { "Duration",   "componentstatusprotocol.componentassociation_duration",             FT_RELATIVE_TIME, BASE_NONE, NULL,              0x0, NULL, HFILL } },

  { &hf_cspreport_association_flags,              { "Flags",      "componentstatusprotocol.componentassociation_flags",                FT_UINT16, BASE_DEC, NULL,                      0x0, NULL, HFILL } },

  { &hf_cspreport_association_protocolid,         { "ProtocolID", "componentstatusprotocol.componentassociation_protocolid",           FT_UINT16, BASE_DEC|BASE_EXT_STRING, &ipproto_val_ext,  0x0, NULL, HFILL } },

  { &hf_cspreport_association_ppid,               { "PPID",       "componentstatusprotocol.componentassociation_ppid",                 FT_UINT32, BASE_DEC|BASE_EXT_STRING, &sctpppid_val_ext, 0x0, NULL, HFILL } },

};

typedef struct _tap_componentstatusprotocol_rec_t {

  uint8_t     type;

  uint16_t    size;

  const char* type_string;

} tap_componentstatusprotocol_rec_t;

static void

dissect_componentstatusprotocol_cspreport_association(tvbuff_t *message_tvb, proto_tree *message_tree)

{

  proto_item* receiver_id_item;

  proto_tree* receiver_id_tree;

  uint64_t    timestamp;

  nstime_t    t;

  receiver_id_item = proto_tree_add_item(message_tree, hf_cspreport_association_receiver_id, message_tvb, 0, 8, ENC_BIG_ENDIAN);

  receiver_id_tree = proto_item_add_subtree(receiver_id_item, ett_cspreport_association_receiver_id);

  proto_tree_add_item(receiver_id_tree, hf_cspreport_association_receiver_id_group,  message_tvb, 0, 1, ENC_BIG_ENDIAN);

  proto_tree_add_item(receiver_id_tree, hf_cspreport_association_receiver_id_object, message_tvb, 1, 7, ENC_BIG_ENDIAN);

  timestamp = tvb_get_ntoh64(message_tvb, 8);

  t.secs  = (time_t)(timestamp / 1000000);

  t.nsecs = (int)((timestamp - 1000000 * t.secs) * 1000);

  if(timestamp == 0xffffffffffffffffULL) {

    proto_tree_add_time_format_value(message_tree, hf_cspreport_association_duration, message_tvb, 8, 8, &t, "Unknown");

  }

  else {

    proto_tree_add_time(message_tree, hf_cspreport_association_duration, message_tvb, 8, 8, &t);

  }

  proto_tree_add_item(message_tree, hf_cspreport_association_flags,      message_tvb, 16, 2, ENC_BIG_ENDIAN);

  proto_tree_add_item(message_tree, hf_cspreport_association_protocolid, message_tvb, 18, 2, ENC_BIG_ENDIAN);

  proto_tree_add_item(message_tree, hf_cspreport_association_ppid,       message_tvb, 20, 4, ENC_BIG_ENDIAN);

}

static void

dissect_componentstatusprotocol_cspreport_message(tvbuff_t *message_tvb, proto_tree *message_tree)

{

  tvbuff_t   *association_tvb;

  proto_tree *association_tree;

  int         association;

  int         offset;

  float       workload;

  uint64_t    interval;

  nstime_t    t;

  interval = tvb_get_ntohl(message_tvb, 24);

  t.secs  = (time_t)(interval / 1000000);

  t.nsecs = (int)((interval - 1000000 * t.secs) * 1000);

  proto_tree_add_time(message_tree, hf_cspreport_report_interval, message_tvb,  24,   4, &t);

  proto_tree_add_item(message_tree, hf_cspreport_location,        message_tvb,  28, 128, ENC_UTF_8);

  proto_tree_add_item(message_tree, hf_cspreport_status,          message_tvb, 156, 128, ENC_UTF_8);

  workload = (float)(100.0 * CSR_GET_WORKLOAD(tvb_get_ntohs(message_tvb, 284)));

  if(workload < 0.0) {   /* Special value 0xffff -> -1.0 means "no load provided"! */

     proto_tree_add_float_format_value(message_tree, hf_cspreport_workload, message_tvb, 284, 2,

                                workload, "N/A");

  }

  else {

     proto_tree_add_float_format_value(message_tree, hf_cspreport_workload, message_tvb, 284, 2,

                                       workload, "%1.2f%%", workload);

  }

  proto_tree_add_item(message_tree, hf_cspreport_associations, message_tvb, 286, 2, ENC_BIG_ENDIAN);

  association = 1;

  offset      = 288;

  while(tvb_reported_length_remaining(message_tvb, offset) >= 24) {

     association_tree = proto_tree_add_subtree_format(message_tree, message_tvb, offset, 24,

         ett_association, NULL, "Association #%d", association++);

     association_tvb  = tvb_new_subset_length(message_tvb, offset, 24);

     dissect_componentstatusprotocol_cspreport_association(association_tvb, association_tree);

     offset += 24;

  }

}

static void

dissect_componentstatusprotocol_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *componentstatusprotocol_tree)

{

  proto_item* flags_item;

  proto_tree* flags_tree;

  proto_item* sender_id_item;

  proto_tree* sender_id_tree;

  uint64_t    timestamp;

  nstime_t    t;

  tap_componentstatusprotocol_rec_t* tap_rec = wmem_new0(pinfo->pool, tap_componentstatusprotocol_rec_t);

  tap_rec->type        = tvb_get_uint8(message_tvb, 0);

  tap_rec->size        = tvb_get_ntohs(message_tvb, 2);

  tap_rec->type_string = val_to_str_const(tap_rec->type, message_type_values, "Unknown ComponentStatusProtocol message type");

  tap_queue_packet(tap_componentstatusprotocol, pinfo, tap_rec);

  proto_tree_add_item(componentstatusprotocol_tree, hf_message_type, message_tvb, 0, 1, ENC_BIG_ENDIAN);

  flags_item = proto_tree_add_item(componentstatusprotocol_tree, hf_message_flags, message_tvb, 1, 1, ENC_BIG_ENDIAN);

  flags_tree = proto_item_add_subtree(flags_item, ett_message_flags);

  proto_tree_add_item(flags_tree, hf_message_flags_final_bit, message_tvb, 1, 1, ENC_BIG_ENDIAN);

  proto_tree_add_item(componentstatusprotocol_tree, hf_message_length, message_tvb, 2, 2, ENC_BIG_ENDIAN);

  proto_tree_add_item(componentstatusprotocol_tree, hf_message_version, message_tvb, 4, 4, ENC_BIG_ENDIAN);

  sender_id_item = proto_tree_add_item(componentstatusprotocol_tree, hf_message_sender_id, message_tvb, 8, 8, ENC_BIG_ENDIAN);

  sender_id_tree = proto_item_add_subtree(sender_id_item, ett_message_sender_id);

  proto_tree_add_item(sender_id_tree, hf_message_sender_id_group,  message_tvb, 8, 1, ENC_BIG_ENDIAN);

  proto_tree_add_item(sender_id_tree, hf_message_sender_id_object, message_tvb, 9, 7, ENC_BIG_ENDIAN);

  timestamp = tvb_get_ntoh64(message_tvb, 16);

  t.secs  = (time_t)(timestamp / 1000000);

  t.nsecs = (int)((timestamp - 1000000 * t.secs) * 1000);

  proto_tree_add_time(componentstatusprotocol_tree, hf_message_sender_timestamp, message_tvb, 16, 8, &t);

  switch (tap_rec->type) {

    case COMPONENTSTATUS_REPORT:

      dissect_componentstatusprotocol_cspreport_message(message_tvb, componentstatusprotocol_tree);

     break;

  }

}

static int

dissect_componentstatusprotocol(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)

{

  proto_item *componentstatusprotocol_item;

  proto_tree *componentstatusprotocol_tree;

  int8_t type;

  int32_t version;

  if (tvb_reported_length(message_tvb) < 4 + 4)

    return 0;

  /* Check, if this packet really contains a ComponentStatusProtocol message */

  type = tvb_get_uint8(message_tvb, 0);

  if (type != COMPONENTSTATUS_REPORT) {

    return 0;

  }

  version = tvb_get_ntohl(message_tvb, 4);

  if (version != COMPONENTSTATUSPROTOCOL_VERSION) {

    return 0;

  }

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

  /* create the componentstatusprotocol protocol tree */

  componentstatusprotocol_item = proto_tree_add_item(tree, proto_componentstatusprotocol, message_tvb, 0, -1, ENC_NA);

  componentstatusprotocol_tree = proto_item_add_subtree(componentstatusprotocol_item, ett_componentstatusprotocol);

  /* dissect the message */

  dissect_componentstatusprotocol_message(message_tvb, pinfo, componentstatusprotocol_tree);

  return tvb_reported_length(message_tvb);

}

/* TAP STAT INFO */

typedef enum

{

  MESSAGE_TYPE_COLUMN = 0,

  MESSAGES_COLUMN,

  MESSAGES_SHARE_COLUMN,

  BYTES_COLUMN,

  BYTES_SHARE_COLUMN,

  FIRST_SEEN_COLUMN,

  LAST_SEEN_COLUMN,

  INTERVAL_COLUMN,

  MESSAGE_RATE_COLUMN,

  BYTE_RATE_COLUMN

} componentstatusprotocol_stat_columns;

static stat_tap_table_item componentstatusprotocol_stat_fields[] = {

  { TABLE_ITEM_STRING, TAP_ALIGN_LEFT,  "ComponentStatusProtocol Message Type", "%-25s" },

  { TABLE_ITEM_UINT,   TAP_ALIGN_RIGHT, "Messages ",            "%u"       },

  { TABLE_ITEM_FLOAT,  TAP_ALIGN_RIGHT, "Messages Share (%)"  , "%1.3f %%" },

  { TABLE_ITEM_UINT,   TAP_ALIGN_RIGHT, "Bytes (B)",            "%u"       },

  { TABLE_ITEM_FLOAT,  TAP_ALIGN_RIGHT, "Bytes Share (%) ",     "%1.3f %%" },

  { TABLE_ITEM_FLOAT,  TAP_ALIGN_LEFT,  "First Seen (s)",       "%1.6f"    },

  { TABLE_ITEM_FLOAT,  TAP_ALIGN_LEFT,  "Last Seen (s)",        "%1.6f"    },

  { TABLE_ITEM_FLOAT,  TAP_ALIGN_LEFT,  "Interval (s)",         "%1.6f"    },

  { TABLE_ITEM_FLOAT,  TAP_ALIGN_LEFT,  "Message Rate (Msg/s)", "%1.2f"    },

  { TABLE_ITEM_FLOAT,  TAP_ALIGN_LEFT,  "Byte Rate (B/s)",      "%1.2f"    }

};

static void componentstatusprotocol_stat_init(stat_tap_table_ui* new_stat)

{

  const char *table_name = "ComponentStatusProtocol Statistics";

  int num_fields = array_length(componentstatusprotocol_stat_fields);

  stat_tap_table *table;

  int i = 0;

  stat_tap_table_item_type items[array_length(componentstatusprotocol_stat_fields)];

  table = stat_tap_find_table(new_stat, table_name);

  if (table) {

    if (new_stat->stat_tap_reset_table_cb) {

      new_stat->stat_tap_reset_table_cb(table);

    }

    return;

  }

  table = stat_tap_init_table(table_name, num_fields, 0, NULL);

  stat_tap_add_table(new_stat, table);

  memset(items, 0x0, sizeof(items));

  /* Add a row for each value type */

  while (message_type_values[i].strptr) {

    items[MESSAGE_TYPE_COLUMN].type                = TABLE_ITEM_STRING;

    items[MESSAGE_TYPE_COLUMN].value.string_value  = message_type_values[i].strptr;

    items[MESSAGES_COLUMN].type                    = TABLE_ITEM_UINT;

    items[MESSAGES_COLUMN].value.uint_value        = 0;

    items[MESSAGES_SHARE_COLUMN].type              = TABLE_ITEM_NONE;

    items[MESSAGES_SHARE_COLUMN].value.float_value = -1.0;

    items[BYTES_COLUMN].type                       = TABLE_ITEM_UINT;

    items[BYTES_COLUMN].value.uint_value           = 0;

    items[BYTES_SHARE_COLUMN].type                 = TABLE_ITEM_NONE;

    items[BYTES_SHARE_COLUMN].value.float_value    = -1.0;

    items[FIRST_SEEN_COLUMN].type                  = TABLE_ITEM_NONE;

    items[FIRST_SEEN_COLUMN].value.float_value     = DBL_MAX;

    items[LAST_SEEN_COLUMN].type                   = TABLE_ITEM_NONE;

    items[LAST_SEEN_COLUMN].value.float_value      = DBL_MIN;

    items[INTERVAL_COLUMN].type                    = TABLE_ITEM_NONE;

    items[INTERVAL_COLUMN].value.float_value       = -1.0;

    items[MESSAGE_RATE_COLUMN].type                = TABLE_ITEM_NONE;

    items[MESSAGE_RATE_COLUMN].value.float_value   = -1.0;

    items[BYTE_RATE_COLUMN].type                   = TABLE_ITEM_NONE;

    items[BYTE_RATE_COLUMN].value.float_value      = -1.0;

    stat_tap_init_table_row(table, i, num_fields, items);

    i++;

  }

}

static tap_packet_status

componentstatusprotocol_stat_packet(void* tapdata, packet_info* pinfo _U_, epan_dissect_t* edt _U_, const void* data, tap_flags_t flags _U_)

{

  stat_data_t*              stat_data = (stat_data_t*)tapdata;

  const tap_componentstatusprotocol_rec_t*      tap_rec   = (const tap_componentstatusprotocol_rec_t*)data;

  stat_tap_table*           table;

  stat_tap_table_item_type* msg_data;

  int                       idx;

  uint64_t                  messages;

  uint64_t                  bytes;

  int                       i         = 0;

  double                    firstSeen = -1.0;

  double                    lastSeen  = -1.0;

  idx = str_to_val_idx(tap_rec->type_string, message_type_values);

  if (idx < 0)

    return TAP_PACKET_DONT_REDRAW;

  table = g_array_index(stat_data->stat_tap_data->tables, stat_tap_table*, 0);

  /* Update packets counter */

  componentstatusprotocol_total_msgs++;

  msg_data = stat_tap_get_field_data(table, idx, MESSAGES_COLUMN);

  msg_data->value.uint_value++;

  messages = msg_data->value.uint_value;

  stat_tap_set_field_data(table, idx, MESSAGES_COLUMN, msg_data);

  /* Update bytes counter */

  componentstatusprotocol_total_bytes += tap_rec->size;

  msg_data = stat_tap_get_field_data(table, idx, BYTES_COLUMN);

  msg_data->value.uint_value += tap_rec->size;

  bytes = msg_data->value.uint_value;

  stat_tap_set_field_data(table, idx, BYTES_COLUMN, msg_data);

  /* Update messages and bytes share */

  while (message_type_values[i].strptr) {

    msg_data = stat_tap_get_field_data(table, i, MESSAGES_COLUMN);

    const unsigned m = msg_data->value.uint_value;

    msg_data = stat_tap_get_field_data(table, i, BYTES_COLUMN);

    const unsigned b = msg_data->value.uint_value;

    msg_data = stat_tap_get_field_data(table, i, MESSAGES_SHARE_COLUMN);

    msg_data->type = TABLE_ITEM_FLOAT;

    msg_data->value.float_value = 100.0 * m / (double)componentstatusprotocol_total_msgs;

    stat_tap_set_field_data(table, i, MESSAGES_SHARE_COLUMN, msg_data);

    msg_data = stat_tap_get_field_data(table, i, BYTES_SHARE_COLUMN);

    msg_data->type = TABLE_ITEM_FLOAT;

    msg_data->value.float_value = componentstatusprotocol_total_bytes ? 100.0 * b / (double)componentstatusprotocol_total_bytes : 0.0;

    stat_tap_set_field_data(table, i, BYTES_SHARE_COLUMN, msg_data);

    i++;

  }

  /* Update first seen time */

  if (pinfo->presence_flags & PINFO_HAS_TS) {

    msg_data = stat_tap_get_field_data(table, idx, FIRST_SEEN_COLUMN);

    msg_data->type = TABLE_ITEM_FLOAT;

    msg_data->value.float_value = MIN(msg_data->value.float_value, nstime_to_sec(&pinfo->rel_ts));

    firstSeen = msg_data->value.float_value;

    stat_tap_set_field_data(table, idx, FIRST_SEEN_COLUMN, msg_data);

  }

  /* Update last seen time */

  if (pinfo->presence_flags & PINFO_HAS_TS) {

    msg_data = stat_tap_get_field_data(table, idx, LAST_SEEN_COLUMN);

    msg_data->type = TABLE_ITEM_FLOAT;

    msg_data->value.float_value = MAX(msg_data->value.float_value, nstime_to_sec(&pinfo->rel_ts));

    lastSeen = msg_data->value.float_value;

    stat_tap_set_field_data(table, idx, LAST_SEEN_COLUMN, msg_data);

  }

  if ((lastSeen - firstSeen) > 0.0) {

    /* Update interval */

    msg_data = stat_tap_get_field_data(table, idx, INTERVAL_COLUMN);

    msg_data->type = TABLE_ITEM_FLOAT;

    msg_data->value.float_value = lastSeen - firstSeen;

    stat_tap_set_field_data(table, idx, INTERVAL_COLUMN, msg_data);

    /* Update message rate */

    msg_data = stat_tap_get_field_data(table, idx, MESSAGE_RATE_COLUMN);

    msg_data->type = TABLE_ITEM_FLOAT;

    msg_data->value.float_value = messages / (lastSeen - firstSeen);

    stat_tap_set_field_data(table, idx, MESSAGE_RATE_COLUMN, msg_data);

    /* Update byte rate */

    msg_data = stat_tap_get_field_data(table, idx, BYTE_RATE_COLUMN);

    msg_data->type = TABLE_ITEM_FLOAT;

    msg_data->value.float_value = bytes / (lastSeen - firstSeen);

    stat_tap_set_field_data(table, idx, BYTE_RATE_COLUMN, msg_data);

  }

  return TAP_PACKET_REDRAW;

}

static void

componentstatusprotocol_stat_reset(stat_tap_table* table)

{

  unsigned element;

  stat_tap_table_item_type* item_data;

  for (element = 0; element < table->num_elements; element++) {

    item_data = stat_tap_get_field_data(table, element, MESSAGES_COLUMN);

    item_data->value.uint_value = 0;

    stat_tap_set_field_data(table, element, MESSAGES_COLUMN, item_data);

    item_data = stat_tap_get_field_data(table, element, MESSAGES_SHARE_COLUMN);

    item_data->type = TABLE_ITEM_NONE;

    item_data->value.float_value = -1.0;

    stat_tap_set_field_data(table, element, MESSAGES_SHARE_COLUMN, item_data);

    item_data = stat_tap_get_field_data(table, element, BYTES_COLUMN);

    item_data->value.uint_value = 0;

    stat_tap_set_field_data(table, element, BYTES_COLUMN, item_data);

    item_data = stat_tap_get_field_data(table, element, BYTES_SHARE_COLUMN);

    item_data->type = TABLE_ITEM_NONE;

    item_data->value.float_value = -1.0;

    stat_tap_set_field_data(table, element, BYTES_SHARE_COLUMN, item_data);

    item_data = stat_tap_get_field_data(table, element, FIRST_SEEN_COLUMN);

    item_data->type = TABLE_ITEM_NONE;

    item_data->value.float_value = DBL_MAX;

    stat_tap_set_field_data(table, element, FIRST_SEEN_COLUMN, item_data);

    item_data = stat_tap_get_field_data(table, element, LAST_SEEN_COLUMN);

    item_data->type = TABLE_ITEM_NONE;

    item_data->value.float_value = DBL_MIN;

    stat_tap_set_field_data(table, element, LAST_SEEN_COLUMN, item_data);

    item_data = stat_tap_get_field_data(table, element, INTERVAL_COLUMN);

    item_data->type = TABLE_ITEM_NONE;

    item_data->value.float_value = -1.0;

    stat_tap_set_field_data(table, element, INTERVAL_COLUMN, item_data);

    item_data = stat_tap_get_field_data(table, element, MESSAGE_RATE_COLUMN);

    item_data->type = TABLE_ITEM_NONE;

    item_data->value.float_value = -1.0;

    stat_tap_set_field_data(table, element, MESSAGE_RATE_COLUMN, item_data);

    item_data = stat_tap_get_field_data(table, element, BYTE_RATE_COLUMN);

    item_data->type = TABLE_ITEM_NONE;

    item_data->value.float_value = -1.0;

    stat_tap_set_field_data(table, element, BYTE_RATE_COLUMN, item_data);

  }

  componentstatusprotocol_total_msgs  = 0;

  componentstatusprotocol_total_bytes = 0;

}

/* Register the protocol with Wireshark */

void

proto_register_componentstatusprotocol(void)

{

  /* Setup protocol subtree array */

  static int *ett[] = {

    &ett_componentstatusprotocol,

    &ett_message_flags,

    &ett_message_sender_id,

    &ett_cspreport_association_receiver_id,

    &ett_association

  };

  static tap_param componentstatusprotocol_stat_params[] = {

    { PARAM_FILTER, "filter", "Filter", NULL, true }

  };

  static stat_tap_table_ui componentstatusprotocol_stat_table = {

    REGISTER_STAT_GROUP_RSERPOOL,

    "ComponentStatusProtocol Statistics",

    "componentstatusprotocol",

    "componentstatusprotocol,stat",

    componentstatusprotocol_stat_init,

    componentstatusprotocol_stat_packet,

    componentstatusprotocol_stat_reset,

    NULL,

    NULL,

    array_length(componentstatusprotocol_stat_fields), componentstatusprotocol_stat_fields,

    array_length(componentstatusprotocol_stat_params), componentstatusprotocol_stat_params,

    NULL,

    0

  };

  /* Register the protocol name and description */

  proto_componentstatusprotocol = proto_register_protocol("Component Status Protocol", "ComponentStatusProtocol", "componentstatusprotocol");

  /* Required function calls to register the header fields and subtrees used */

  proto_register_field_array(proto_componentstatusprotocol, hf, array_length(hf));

  proto_register_subtree_array(ett, array_length(ett));

  tap_componentstatusprotocol = register_tap("componentstatusprotocol");

  /* Register the dissector */

  componentstatusprotocol_handle = register_dissector("componentstatusprotocol", dissect_componentstatusprotocol, proto_componentstatusprotocol);

  register_stat_tap_table_ui(&componentstatusprotocol_stat_table);

}

void

proto_reg_handoff_componentstatusprotocol(void)

{

  dissector_add_uint_with_preference("udp.port", COMPONENTSTATUSPROTOCOL_PORT, componentstatusprotocol_handle);

}

/*

 * Editor modelines

 *

 * Local Variables:

 * c-basic-offset: 2

 * tab-width: 8

 * indent-tabs-mode: nil

 * End:

 *

 * ex: set shiftwidth=2 tabstop=8 expandtab:

 * :indentSize=2:tabSize=8:noTabs=true:

 */