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packet-rpitch.c
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packet-rpitch.c
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/* packet-rpitch.c
* Routines for Cboe Europe SIS Room Data (RPITCH).
* Copyright 2010-2019, Dhiren Vekaria <[email protected]>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <[email protected]>
* Copyright 1998 Gerald Combs
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <glib.h>
#include <stdio.h>
#include <epan/packet.h>
#include <epan/prefs.h>
int proto_rpitch = -1;
static dissector_handle_t rpitch_handle;
static int hf_rpitch_hdr_message_length = -1;
static int hf_rpitch_hdr_message_type = -1;
static int hf_rpitch_hdr_sequence = -1;
static int hf_rpitch_session_sub_id = -1;
static int hf_rpitch_username = -1;
static int hf_rpitch_password = -1;
static int hf_rpitch_last_received_sequence = -1;
static int hf_rpitch_si = -1;
static int hf_rpitch_login_status = -1;
static int hf_rpitch_timestamp = -1;
static int hf_rpitch_order_id = -1;
static int hf_rpitch_side = -1;
static int hf_rpitch_quantity = -1;
static int hf_rpitch_symbol = -1;
static int hf_rpitch_price = -1;
static int hf_rpitch_room_id = -1;
static int hf_rpitch_target_id = -1;
static int hf_rpitch_quote_status = -1;
static gint ett_rpitch = -1;
#include "packet-rpitch.h"
static void
proto_tree_add_long_price(proto_tree *tree, int hf, tvbuff_t *tvb, int offset)
{
guint64 value = tvb_get_letoh64(tvb, offset);
proto_tree_add_string_format_value(
tree, hf, tvb, offset, 8, "",
"%lu = %lu.%06u", value, value / 1000000, (unsigned) (value % 1000000));
}
static void
proto_tree_add_base36(proto_tree *tree, int hf, tvbuff_t *tvb, int offset)
{
static char BASE36_DIGITS[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
char buffer[13]; /* order IDs are 12 bytes, add one for the NUL */
char *op = buffer + 12;
guint64 value = tvb_get_letoh64(tvb, offset);
*op-- = '\0';
do {
*op-- = BASE36_DIGITS[value % 36];
value /= 36;
} while ((value != 0) && (op >= buffer));
while (op >= buffer) {
*op-- = '0';
}
proto_tree_add_string_format_value(
tree, hf, tvb, offset, 8, "",
"%s", buffer);
}
static guint8
dissect_login_request_message(tvbuff_t *tvb, proto_tree *tree, gint *offset)
{
proto_item *msg_item;
proto_tree *msg_tree;
guint16 message_size = 0;
if (tvb_length_remaining(tvb, *offset) != LOGIN_REQUEST_LEN) {
return 0;
}
message_size = tvb_get_guint8(tvb, *offset);
msg_item = proto_tree_add_protocol_format(
tree, proto_rpitch, tvb,
*offset, message_size, "Login Request");
msg_tree = proto_item_add_subtree(msg_item, ett_rpitch);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_message_length, tvb, *offset, 1, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_message_type, tvb, *offset + 1, 1, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_sequence, tvb, *offset + 2, 4, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_session_sub_id, tvb, *offset + 6, 4, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_username, tvb, *offset + 10, 4, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_password, tvb, *offset + 14, 10, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_last_received_sequence, tvb, *offset + 24, 4, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_si, tvb, *offset + 28, 4, TRUE);
*offset += message_size;
return 1;
}
static guint8
dissect_login_response_message(tvbuff_t *tvb, proto_tree *tree, gint *offset)
{
proto_item *msg_item;
proto_tree *msg_tree;
guint16 message_size = 0;
if (tvb_length_remaining(tvb, *offset) != LOGIN_RESPONSE_LEN) {
return 0;
}
message_size = tvb_get_guint8(tvb, *offset);
msg_item = proto_tree_add_protocol_format(
tree, proto_rpitch, tvb,
*offset, message_size, "Login Response");
msg_tree = proto_item_add_subtree(msg_item, ett_rpitch);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_message_length, tvb, *offset, 1, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_message_type, tvb, *offset + 1, 1, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_sequence, tvb, *offset + 2, 4, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_login_status, tvb, *offset + 6, 1, TRUE);
*offset += message_size;
return 1;
}
static guint8
dissect_heartbeat_message(tvbuff_t *tvb, proto_tree *tree, gint *offset)
{
proto_item *msg_item;
proto_tree *msg_tree;
guint16 message_size = 0;
if (tvb_length_remaining(tvb, *offset) != HEARTBEAT_LEN) {
return 0;
}
message_size = tvb_get_guint8(tvb, *offset);
msg_item = proto_tree_add_protocol_format(
tree, proto_rpitch, tvb,
*offset, message_size, "Heartbeat");
msg_tree = proto_item_add_subtree(msg_item, ett_rpitch);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_message_length, tvb, *offset, 1, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_message_type, tvb, *offset + 1, 1, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_sequence, tvb, *offset + 2, 4, TRUE);
*offset += message_size;
return 1;
}
static guint8
dissect_add_order_message(tvbuff_t *tvb, proto_tree *tree, gint *offset)
{
proto_item *msg_item;
proto_tree *msg_tree;
guint16 message_size = 0;
if (tvb_length_remaining(tvb, *offset) != ADD_ORDER_LEN) {
return 0;
}
message_size = tvb_get_guint8(tvb, *offset);
msg_item = proto_tree_add_protocol_format(
tree, proto_rpitch, tvb,
*offset, message_size, "Add Order");
msg_tree = proto_item_add_subtree(msg_item, ett_rpitch);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_message_length, tvb, *offset, 1, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_message_type, tvb, *offset + 1, 1, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_sequence, tvb, *offset + 2, 4, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_timestamp, tvb, *offset + 6, 8, TRUE);
proto_tree_add_base36(msg_tree, hf_rpitch_order_id, tvb, *offset + 14);
proto_tree_add_item(msg_tree, hf_rpitch_side, tvb, *offset + 22, 1, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_quantity, tvb, *offset + 23, 4, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_symbol, tvb, *offset + 27, 8, TRUE);
proto_tree_add_long_price(msg_tree, hf_rpitch_price, tvb, *offset + 35);
proto_tree_add_item(msg_tree, hf_rpitch_room_id, tvb, *offset + 43, 4, TRUE);
*offset += message_size;
return 1;
}
static guint8
dissect_modify_order_message(tvbuff_t *tvb, proto_tree *tree, gint *offset)
{
proto_item *msg_item;
proto_tree *msg_tree;
guint16 message_size = 0;
if (tvb_length_remaining(tvb, *offset) != MODIFY_ORDER_LEN) {
return 0;
}
message_size = tvb_get_guint8(tvb, *offset);
msg_item = proto_tree_add_protocol_format(
tree, proto_rpitch, tvb,
*offset, message_size, "Modify Order");
msg_tree = proto_item_add_subtree(msg_item, ett_rpitch);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_message_length, tvb, *offset, 1, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_message_type, tvb, *offset + 1, 1, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_sequence, tvb, *offset + 2, 4, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_timestamp, tvb, *offset + 6, 8, TRUE);
proto_tree_add_base36(msg_tree, hf_rpitch_order_id, tvb, *offset + 14);
proto_tree_add_item(msg_tree, hf_rpitch_quantity, tvb, *offset + 22, 4, TRUE);
proto_tree_add_long_price(msg_tree, hf_rpitch_price, tvb, *offset + 26);
*offset += message_size;
return 1;
}
static guint8
dissect_delete_order_message(tvbuff_t *tvb, proto_tree *tree, gint *offset)
{
proto_item *msg_item;
proto_tree *msg_tree;
guint16 message_size = 0;
if (tvb_length_remaining(tvb, *offset) != DELETE_ORDER_LEN) {
return 0;
}
message_size = tvb_get_guint8(tvb, *offset);
msg_item = proto_tree_add_protocol_format(
tree, proto_rpitch, tvb,
*offset, message_size, "Delete Order");
msg_tree = proto_item_add_subtree(msg_item, ett_rpitch);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_message_length, tvb, *offset, 1, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_message_type, tvb, *offset + 1, 1, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_sequence, tvb, *offset + 2, 4, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_timestamp, tvb, *offset + 6, 8, TRUE);
proto_tree_add_base36(msg_tree, hf_rpitch_order_id, tvb, *offset + 14);
*offset += message_size;
return 1;
}
static guint8
dissect_symbol_clear_message(tvbuff_t *tvb, proto_tree *tree, gint *offset)
{
proto_item *msg_item;
proto_tree *msg_tree;
guint16 message_size = 0;
if (tvb_length_remaining(tvb, *offset) != SYMBOL_CLEAR_LEN) {
return 0;
}
message_size = tvb_get_guint8(tvb, *offset);
msg_item = proto_tree_add_protocol_format(
tree, proto_rpitch, tvb,
*offset, message_size, "Symbol Clear");
msg_tree = proto_item_add_subtree(msg_item, ett_rpitch);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_message_length, tvb, *offset, 1, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_message_type, tvb, *offset + 1, 1, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_sequence, tvb, *offset + 2, 4, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_timestamp, tvb, *offset + 6, 8, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_symbol, tvb, *offset + 14, 8, TRUE);
*offset += message_size;
return 1;
}
static guint8
dissect_room_status_message(tvbuff_t *tvb, proto_tree *tree, gint *offset)
{
proto_item *msg_item;
proto_tree *msg_tree;
guint16 message_size = 0;
if (tvb_length_remaining(tvb, *offset) != ROOM_STATUS_LEN) {
return 0;
}
message_size = tvb_get_guint8(tvb, *offset);
msg_item = proto_tree_add_protocol_format(
tree, proto_rpitch, tvb,
*offset, message_size, "Room Status");
msg_tree = proto_item_add_subtree(msg_item, ett_rpitch);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_message_length, tvb, *offset, 1, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_message_type, tvb, *offset + 1, 1, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_hdr_sequence, tvb, *offset + 2, 4, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_timestamp, tvb, *offset + 6, 8, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_target_id, tvb, *offset + 14, 4, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_room_id, tvb, *offset + 18, 4, TRUE);
proto_tree_add_item(msg_tree, hf_rpitch_quote_status, tvb, *offset + 22, 1, TRUE);
*offset += message_size;
return 1;
}
static int
dissect_rpitch(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
gint bytes, offset = 0;
guint8 hdr_message_type;
if (!tree) {
return 0;
}
while ((bytes = tvb_length_remaining(tvb, offset))) {
guint8 result = 0;
if (bytes < HEARTBEAT_LEN) {
/* There aren't enough bytes to even decode the header. This must be malformed data. */
return offset;
}
hdr_message_type = tvb_get_guint8(tvb, offset + 1);
switch (hdr_message_type) {
case 0xBF: /* Login */
result = dissect_login_request_message(tvb, tree, &offset);
break;
case 0xC0: /* Login Response */
result = dissect_login_response_message(tvb, tree, &offset);
break;
case 0xC1: /* Heartbeat */
result = dissect_heartbeat_message(tvb, tree, &offset);
break;
case 0xC2: /* Add Order */
result = dissect_add_order_message(tvb, tree, &offset);
break;
case 0xC3: /* Modify Order */
result = dissect_modify_order_message(tvb, tree, &offset);
break;
case 0xC4: /* Delete Order */
result = dissect_delete_order_message(tvb, tree, &offset);
break;
case 0xC5: /* Symbol Clear */
result = dissect_symbol_clear_message(tvb, tree, &offset);
break;
case 0xC6:
result = dissect_room_status_message(tvb, tree, &offset);
break;
}
if (result == 0) {
return offset;
}
else {
col_set_str(pinfo->cinfo, COL_PROTOCOL, "RPITCH");
col_add_str(pinfo->cinfo, COL_INFO, val_to_str(hdr_message_type, rpitchMessageTypeStrings, "Unknown (%u)"));
}
}
return offset;
}
void
proto_reg_handoff_rpitch(void)
{
heur_dissector_add("tcp", dissect_rpitch, proto_rpitch);
rpitch_handle = new_create_dissector_handle(dissect_rpitch, proto_rpitch);
dissector_add_handle("tcp.port", rpitch_handle);
}
void
proto_register_rpitch(void)
{
static hf_register_info hf[] = {
{ &hf_rpitch_hdr_message_length, { "Message Length", "rpitch.message_length", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_rpitch_hdr_message_type, { "Message Type", "rpitch.message_type", FT_UINT8, BASE_HEX, rpitchMessageTypeStrings, 0x0, NULL, HFILL } },
{ &hf_rpitch_hdr_sequence, { "Sequence Number", "rpitch.sequence_number", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_rpitch_session_sub_id, { "Session Sub ID", "rpitch.session_sub_id", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_rpitch_username, { "Username", "rpitch.username", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_rpitch_password, { "Password", "rpitch.password", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_rpitch_last_received_sequence, { "Last Received Sequence Number", "rpitch.last_received_sequence", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_rpitch_si, { "SI", "rpitch.si", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_rpitch_login_status, { "Login Status", "rpitch.login_status", FT_UINT8, BASE_DEC, rpitchLoginResponseStatusStrings, 0x0, NULL, HFILL } },
{ &hf_rpitch_timestamp, { "Timestamp", "rpitch.timestamp", FT_UINT64, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_rpitch_order_id, { "Order ID", "rpitch.order_id", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_rpitch_side, { "Side", "rpitch.side", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_rpitch_quantity, { "Quantity", "rpitch.quantity", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_rpitch_symbol, { "Symbol", "rpitch.symbol", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_rpitch_price, { "Price", "rpitch.price", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_rpitch_room_id, { "Room ID", "rpitch.room_id", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
{ &hf_rpitch_target_id, { "Target ID", "rpitch.target_id", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL } },
{ &hf_rpitch_quote_status, { "Quote Status", "rpitch.quote_status", FT_UINT8, BASE_DEC, rpitchQuoteStatusStrings, 0x0, NULL, HFILL } },
};
static gint *ett[] = {
&ett_rpitch,
};
proto_rpitch = proto_register_protocol (
"Cboe Europe SIS Room Data", /* name */
"Cboe RPITCH", /* short name */
"rpitch" /* abbrev */
);
proto_register_field_array(proto_rpitch, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
prefs_register_protocol(proto_rpitch, NULL);
}