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wireshark/epan/dissectors/packet-asphodel.c

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/* packet-asphodel.c
* Routines for Asphodel dissection
* Copyright 2018, Greg Schwendimann <gregs@suprocktech.com>
* Copyright 2020, Jeffrey Nichols <jsnichols@suprocktech.com>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: BSD-2-Clause
*/
/*
* Asphodel: https://bitbucket.org/suprocktech/asphodel
*/
#include <config.h>
#include <epan/packet.h>
#include <epan/expert.h>
#include "packet-tcp.h"
void proto_reg_handoff_asphodel(void);
void proto_register_asphodel(void);
// useful #defines copied from asphodel_protocol.h and asphodel_tcp.c
#define ASPHODEL_PROTOCOL_TYPE_RF_POWER 0x01
#define ASPHODEL_PROTOCOL_TYPE_RADIO 0x02
#define ASPHODEL_PROTOCOL_TYPE_REMOTE 0x04
#define ASPHODEL_PROTOCOL_TYPE_BOOTLOADER 0x08
#define ASPHODEL_TCP_MSG_TYPE_DEVICE_CMD 0x00
#define ASPHODEL_TCP_MSG_TYPE_DEVICE_STREAM 0x01
#define ASPHODEL_TCP_MSG_TYPE_REMOTE_CMD 0x02
#define ASPHODEL_TCP_MSG_TYPE_REMOTE_STREAM 0x03
#define ASPHODEL_TCP_MSG_TYPE_REMOTE_NOTIFY 0x06
#define ASPHODEL_CMD_REPLY_ERROR 0xFF
static const value_string asphodel_type_vals[] = {
{ ASPHODEL_TCP_MSG_TYPE_DEVICE_CMD, "DEVICE_CMD" },
{ ASPHODEL_TCP_MSG_TYPE_DEVICE_STREAM, "DEVICE_STREAM" },
{ ASPHODEL_TCP_MSG_TYPE_REMOTE_CMD, "REMOTE_CMD" },
{ ASPHODEL_TCP_MSG_TYPE_REMOTE_STREAM, "REMOTE_STREAM" },
{ ASPHODEL_TCP_MSG_TYPE_REMOTE_NOTIFY, "REMOTE_NOTIFY" },
{ 0, NULL }
};
static const value_string asphodel_cmd_vals[] = {
{ 0x00, "GET_PROTOCOL_VERSION" },
{ 0x01, "GET_BOARD_INFO" },
{ 0x02, "GET_USER_TAG_LOCATIONS" },
{ 0x03, "GET_BUILD_INFO" },
{ 0x04, "GET_BUILD_DATE" },
{ 0x05, "GET_CHIP_FAMILY" },
{ 0x06, "GET_CHIP_MODEL" },
{ 0x07, "GET_CHIP_ID" },
{ 0x08, "GET_NVM_SIZE" },
{ 0x09, "ERASE_NVM" },
{ 0x0A, "WRITE_NVM" },
{ 0x0B, "READ_NVM" },
{ 0x0C, "FLUSH" },
{ 0x0D, "RESET" },
{ 0x0E, "GET_BOOTLOADER_INFO" },
{ 0x0F, "BOOTLOADER_JUMP" },
{ 0x10, "GET_RGB_COUNT" },
{ 0x11, "GET_RGB_VALUES" },
{ 0x12, "SET_RGB" },
{ 0x13, "SET_RGB_INSTANT" },
{ 0x14, "GET_LED_COUNT" },
{ 0x15, "GET_LED_VALUE" },
{ 0x16, "SET_LED" },
{ 0x17, "SET_LED_INSTANT" },
{ 0x20, "GET_STREAM_COUNT_AND_ID" },
{ 0x21, "GET_STREAM_CHANNELS" },
{ 0x22, "GET_STREAM_FORMAT" },
{ 0x23, "ENABLE_STREAM" },
{ 0x24, "WARM_UP_STREAM" },
{ 0x25, "GET_STREAM_STATUS" },
{ 0x26, "GET_STREAM_RATE_INFO" },
{ 0x30, "GET_CHANNEL_COUNT" },
{ 0x31, "GET_CHANNEL_NAME" },
{ 0x32, "GET_CHANNEL_INFO" },
{ 0x33, "GET_CHANNEL_COEFFICIENTS" },
{ 0x34, "GET_CHANNEL_CHUNK" },
{ 0x35, "CHANNEL_SPECIFIC" },
{ 0x36, "GET_CHANNEL_CALIBRATION" },
{ 0x40, "GET_SUPPLY_COUNT" },
{ 0x41, "GET_SUPPLY_NAME" },
{ 0x42, "GET_SUPPLY_INFO" },
{ 0x43, "CHECK_SUPPLY" },
{ 0x50, "GET_CTRL_VAR_COUNT" },
{ 0x51, "GET_CTRL_VAR_NAME" },
{ 0x52, "GET_CTRL_VAR_INFO" },
{ 0x53, "GET_CTRL_VAR" },
{ 0x54, "SET_CTRL_VAR" },
{ 0x60, "GET_SETTING_COUNT" },
{ 0x61, "GET_SETTING_NAME" },
{ 0x62, "GET_SETTING_INFO" },
{ 0x63, "GET_SETTING_DEFAULT" },
{ 0x64, "GET_CUSTOM_ENUM_COUNTS" },
{ 0x65, "GET_CUSTOM_ENUM_VALUE_NAME" },
{ 0x66, "GET_SETTING_CATEGORY_COUNT" },
{ 0x67, "GET_SETTING_CATEGORY_NAME" },
{ 0x68, "GET_SETTING_CATERORY_SETTINGS" },
{ 0x70, "SET_DEVICE_MODE" },
{ 0x71, "GET_DEVICE_MODE" },
{ 0x80, "ENABLE_RF_POWER" },
{ 0x81, "GET_RF_POWER_STATUS" },
{ 0x82, "GET_RF_POWER_CTRL_VARS" },
{ 0x83, "RESET_RF_POWER_TIMEOUT" },
{ 0x90, "STOP_RADIO" },
{ 0x91, "START_RADIO_SCAN" },
{ 0x92, "GET_RADIO_SCAN_RESULTS" },
{ 0x93, "CONNECT_RADIO" },
{ 0x94, "GET_RADIO_STATUS" },
{ 0x95, "GET_RADIO_CTRL_VARS" },
{ 0x96, "GET_RADIO_DEFAULT_SERIAL" },
{ 0x97, "START_RADIO_SCAN_BOOT" },
{ 0x98, "CONNECT_RADIO_BOOT" },
{ 0x99, "GET_RADIO_EXTRA_SCAN_RESULTS" },
{ 0x9A, "STOP_REMOTE" },
{ 0x9B, "RESTART_REMOTE" },
{ 0x9C, "GET_REMOTE_STATUS" },
{ 0x9D, "RESTART_REMOTE_APP" },
{ 0x9E, "RESTART_REMOTE_BOOT" },
{ 0x9F, "GET_RADIO_SCAN_POWER" },
{ 0xA0, "BOOTLOADER_START_PROGRAM" },
{ 0xA1, "GET_BOOTLOADER_PAGE_INFO" },
{ 0xA2, "GET_BOOTLOADER_BLOCK_SIZES" },
{ 0xA3, "START_BOOTLOADER_PAGE" },
{ 0xA4, "WRITE_BOOTLOADER_CODE_BLOCK" },
{ 0xA5, "FINISH_BOOTLOADER_PAGE" },
{ 0xA6, "VERIFY_BOOTLOADER_PAGE" },
{ 0xE0, "GET_GPIO_PORT_COUNT" },
{ 0xE1, "GET_GPIO_PORT_NAME" },
{ 0xE2, "GET_GPIO_PORT_INFO" },
{ 0xE3, "GET_GPIO_PORT_VALUES" },
{ 0xE4, "SET_GPIO_PORT_MODES" },
{ 0xE5, "DISABLE_GPIO_PORT_OVERRIDES" },
{ 0xE6, "GET_BUS_COUNTS" },
{ 0xE7, "SET_SPI_CS_MODE" },
{ 0xE8, "DO_SPI_TRANSFER" },
{ 0xE9, "DO_I2C_WRITE" },
{ 0xEA, "DO_I2C_READ" },
{ 0xEB, "DO_I2C_WRITE_READ" },
{ 0xEC, "DO_RADIO_FIXED_TEST" },
{ 0xED, "DO_RADIO_SWEEP_TEST" },
{ 0xF0, "GET_INFO_REGION_COUNT" },
{ 0xF1, "GET_INFO_REGION_NAME" },
{ 0xF2, "GET_INFO_REGION" },
{ 0xF3, "GET_STACK_INFO" },
{ 0xFC, "ECHO_RAW" },
{ 0xFD, "ECHO_TRANSACTION" },
{ 0xFE, "ECHO_PARAMS" },
{ 0xFF, "REPLY_ERROR" },
{ 0, NULL }
};
static const value_string asphodel_err_vals[] = {
{ 0x01, "ERROR_CODE_UNSPECIFIED" },
{ 0x02, "ERROR_CODE_MALFORMED_COMMAND" },
{ 0x03, "ERROR_CODE_UNIMPLEMENTED_COMMAND" },
{ 0x04, "ERROR_CODE_BAD_CMD_LENGTH" },
{ 0x05, "ERROR_CODE_BAD_ADDRESS" },
{ 0x06, "ERROR_CODE_BAD_INDEX" },
{ 0x07, "ERROR_CODE_INVALID_DATA" },
{ 0x08, "ERROR_CODE_UNSUPPORTED" },
{ 0x09, "ERROR_CODE_BAD_STATE" },
{ 0x0A, "ERROR_CODE_I2C_ERROR" },
{ 0x0B, "ERROR_CODE_INCOMPLETE" },
{ 0, NULL }
};
static const true_false_string notify_connect_disconnect = {
"Connect",
"Disconnect"
};
static int proto_asphodel = -1;
// asphodel inquiry fields
static int hf_asphodel_version = -1;
static int hf_asphodel_identifier = -1;
// asphodel response fields
static int hf_asphodel_tcp_version = -1;
static int hf_asphodel_connected = -1;
static int hf_asphodel_max_incoming_param_length = -1;
static int hf_asphodel_max_outgoing_param_length = -1;
static int hf_asphodel_stream_packet_length = -1;
static int hf_asphodel_protocol_type = -1;
static int hf_asphodel_protocol_type_rf_power = -1;
static int hf_asphodel_protocol_type_radio = -1;
static int hf_asphodel_protocol_type_remote = -1;
static int hf_asphodel_protocol_type_bootloader = -1;
static int hf_asphodel_serial_number = -1;
static int hf_asphodel_board_rev = -1;
static int hf_asphodel_board_type = -1;
static int hf_asphodel_build_info = -1;
static int hf_asphodel_build_date = -1;
static int hf_asphodel_user_tag1 = -1;
static int hf_asphodel_user_tag2 = -1;
static int hf_asphodel_remote_max_incoming_param_length = -1;
static int hf_asphodel_remote_max_outgoing_param_length = -1;
static int hf_asphodel_remote_stream_packet_length = -1;
// asphodel tcp fields
static int hf_asphodel_length = -1;
static int hf_asphodel_type = -1;
static int hf_asphodel_seq = -1;
static int hf_asphodel_cmd = -1;
static int hf_asphodel_err_code = -1;
static int hf_asphodel_params = -1;
static int hf_asphodel_stream_data = -1;
static int hf_asphodel_notify = -1;
static int hf_asphodel_notify_serial = -1;
static gint ett_asphodel = -1;
static gint ett_asphodel_protocol_type = -1;
static expert_field ei_asphodel_bad_param_length = EI_INIT;
static expert_field ei_asphodel_bad_length = EI_INIT;
static expert_field ei_asphodel_cmd_error = EI_INIT;
static expert_field ei_asphodel_unknown_type = EI_INIT;
static dissector_handle_t asphodel_inquiry_handle;
static dissector_handle_t asphodel_response_handle;
static dissector_handle_t asphodel_tcp_handle;
static void
asphodel_fmt_version(gchar *result, guint32 version)
{
guint8 major = version >> 8;
guint8 minor = (version >> 4) & 0x0F;
guint8 subminor = version & 0x0F;
snprintf(result, ITEM_LABEL_LENGTH, "%d.%d.%d", major, minor, subminor);
}
static int
dissect_asphodel_tcp_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
proto_item *ti;
proto_tree *asphodel_tree;
guint32 length;
ti = proto_tree_add_item(tree, proto_asphodel, tvb, 0, -1, ENC_NA);
asphodel_tree = proto_item_add_subtree(ti, ett_asphodel);
proto_tree_add_item_ret_uint(asphodel_tree, hf_asphodel_length, tvb, 0, 2, ENC_BIG_ENDIAN, &length);
if (length == 0)
{
proto_item_set_text(ti, "Asphodel No Op");
col_append_sep_fstr(pinfo->cinfo, COL_INFO, ", ", "No op");
}
else
{
guint32 type;
proto_tree_add_item_ret_uint(asphodel_tree, hf_asphodel_type, tvb, 2, 1, ENC_NA, &type);
// handle the text
switch (type)
{
case ASPHODEL_TCP_MSG_TYPE_DEVICE_CMD:
proto_item_set_text(ti, "Asphodel Command");
break;
case ASPHODEL_TCP_MSG_TYPE_REMOTE_CMD:
proto_item_set_text(ti, "Asphodel Remote Command");
break;
case ASPHODEL_TCP_MSG_TYPE_DEVICE_STREAM:
proto_item_set_text(ti, "Asphodel Stream Data");
break;
case ASPHODEL_TCP_MSG_TYPE_REMOTE_STREAM:
proto_item_set_text(ti, "Asphodel Remote Stream Data");
break;
case ASPHODEL_TCP_MSG_TYPE_REMOTE_NOTIFY:
proto_item_set_text(ti, "Asphodel Notify");
break;
default:
// keep the default "Asphodel" item text
break;
}
switch (type)
{
case ASPHODEL_TCP_MSG_TYPE_DEVICE_CMD:
case ASPHODEL_TCP_MSG_TYPE_REMOTE_CMD:
if (length >= 3)
{
guint32 cmd;
proto_tree_add_item(asphodel_tree, hf_asphodel_seq, tvb, 3, 1, ENC_NA);
proto_tree_add_item_ret_uint(asphodel_tree, hf_asphodel_cmd, tvb, 4, 1, ENC_NA, &cmd);
col_append_sep_fstr(pinfo->cinfo, COL_INFO, ", ", "%s", val_to_str(cmd, asphodel_cmd_vals, "Unknown type (0x%02x)"));
if (cmd == ASPHODEL_CMD_REPLY_ERROR)
{
if (length >= 4)
{
proto_tree_add_item(asphodel_tree, hf_asphodel_err_code, tvb, 5, 1, ENC_NA);
if (length >= 5)
{
proto_tree_add_item(asphodel_tree, hf_asphodel_params, tvb, 6, -1, ENC_NA);
}
}
else
{
// not long enough
expert_add_info(pinfo, ti, &ei_asphodel_bad_length);
}
// add a note that it's an error response
expert_add_info(pinfo, ti, &ei_asphodel_cmd_error);
}
else
{
// normal command response
if (length >= 4)
{
proto_tree_add_item(asphodel_tree, hf_asphodel_params, tvb, 5, -1, ENC_NA);
}
}
}
else
{
// not long enough
expert_add_info(pinfo, ti, &ei_asphodel_bad_length);
}
break;
case ASPHODEL_TCP_MSG_TYPE_DEVICE_STREAM:
case ASPHODEL_TCP_MSG_TYPE_REMOTE_STREAM:
if (length > 1)
{
proto_tree_add_item(asphodel_tree, hf_asphodel_stream_data, tvb, 3, -1, ENC_NA);
col_append_sep_fstr(pinfo->cinfo, COL_INFO, ", ", "Stream(%d)", length - 1);
}
else
{
// not long enough
expert_add_info(pinfo, ti, &ei_asphodel_bad_length);
}
break;
case ASPHODEL_TCP_MSG_TYPE_REMOTE_NOTIFY:
if (length == 1) // disconnect
{
ti = proto_tree_add_boolean(asphodel_tree, hf_asphodel_notify, tvb, 2, 1, 0);
proto_item_set_generated(ti);
col_append_sep_fstr(pinfo->cinfo, COL_INFO, ", ", "Notify Disconnect");
}
else if (length == 6) // connect
{
proto_tree *protocol_type_tree;
ti = proto_tree_add_boolean(asphodel_tree, hf_asphodel_notify, tvb, 2, 1, 1);
proto_item_set_generated(ti);
col_append_sep_fstr(pinfo->cinfo, COL_INFO, ", ", "Notify Connect");
proto_tree_add_item(asphodel_tree, hf_asphodel_notify_serial, tvb, 3, 4, ENC_BIG_ENDIAN);
// protocol type
ti = proto_tree_add_item(asphodel_tree, hf_asphodel_protocol_type, tvb, 7, 1, ENC_NA);
protocol_type_tree = proto_item_add_subtree(ti, ett_asphodel_protocol_type);
proto_tree_add_item(protocol_type_tree, hf_asphodel_protocol_type_rf_power, tvb, 7, 1, ENC_NA);
proto_tree_add_item(protocol_type_tree, hf_asphodel_protocol_type_radio, tvb, 7, 1, ENC_NA);
proto_tree_add_item(protocol_type_tree, hf_asphodel_protocol_type_remote, tvb, 7, 1, ENC_NA);
proto_tree_add_item(protocol_type_tree, hf_asphodel_protocol_type_bootloader, tvb, 7, 1, ENC_NA);
}
else
{
expert_add_info(pinfo, ti, &ei_asphodel_bad_length);
col_append_sep_fstr(pinfo->cinfo, COL_INFO, ", ", "Notify");
}
break;
default:
// unknown message type
expert_add_info(pinfo, ti, &ei_asphodel_unknown_type);
col_append_sep_fstr(pinfo->cinfo, COL_INFO, ", ", "Unknown(%02x)", type);
break;
}
}
return tvb_captured_length(tvb);
}
static guint
get_asphodel_tcp_pdu_len(packet_info *pinfo _U_, tvbuff_t *tvb, int offset, void *data _U_)
{
return ((guint)tvb_get_ntohs(tvb, offset)) + 2;
}
static int
dissect_asphodel_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
col_set_str(pinfo->cinfo, COL_PROTOCOL, "Asphodel");
col_clear(pinfo->cinfo, COL_INFO);
tcp_dissect_pdus(tvb, pinfo, tree, TRUE, 2, get_asphodel_tcp_pdu_len, dissect_asphodel_tcp_pdu, data);
return tvb_reported_length(tvb);
}
static int
dissect_asphodel_response(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
proto_item *ti;
proto_tree *asphodel_tree;
proto_tree *protocol_type_tree;
conversation_t *conversation;
guint offset;
guint len;
guint protocol_type;
guint16 incoming_cmd_buffer_size;
guint16 outgoing_cmd_buffer_size;
guint16 remote_incoming_cmd_buffer_size;
guint16 remote_outgoing_cmd_buffer_size;
guint8 *serial_number;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "Asphodel");
ti = proto_tree_add_item(tree, proto_asphodel, tvb, 0, -1, ENC_NA);
asphodel_tree = proto_item_add_subtree(ti, ett_asphodel);
proto_item_set_text(ti, "Asphodel Response");
if (tvb_captured_length(tvb) < 16)
{
// too short
return 0;
}
proto_tree_add_item(asphodel_tree, hf_asphodel_tcp_version, tvb, 0, 1, ENC_NA);
proto_tree_add_item(asphodel_tree, hf_asphodel_connected, tvb, 1, 1, ENC_NA);
incoming_cmd_buffer_size = tvb_get_ntohs(tvb, 2);
ti = proto_tree_add_uint(asphodel_tree, hf_asphodel_max_incoming_param_length, tvb, 2, 2, incoming_cmd_buffer_size - 2);
if (incoming_cmd_buffer_size <= 2)
{
expert_add_info(pinfo, ti, &ei_asphodel_bad_param_length);
}
outgoing_cmd_buffer_size = tvb_get_ntohs(tvb, 4);
ti = proto_tree_add_uint(asphodel_tree, hf_asphodel_max_outgoing_param_length, tvb, 4, 2, outgoing_cmd_buffer_size - 2);
if (outgoing_cmd_buffer_size <= 2)
{
expert_add_info(pinfo, ti, &ei_asphodel_bad_param_length);
}
proto_tree_add_item(asphodel_tree, hf_asphodel_stream_packet_length, tvb, 6, 2, ENC_BIG_ENDIAN);
ti = proto_tree_add_item_ret_uint(asphodel_tree, hf_asphodel_protocol_type, tvb, 8, 1, ENC_NA, &protocol_type);
protocol_type_tree = proto_item_add_subtree(ti, ett_asphodel_protocol_type);
proto_tree_add_item(protocol_type_tree, hf_asphodel_protocol_type_rf_power, tvb, 8, 1, ENC_NA);
proto_tree_add_item(protocol_type_tree, hf_asphodel_protocol_type_radio, tvb, 8, 1, ENC_NA);
proto_tree_add_item(protocol_type_tree, hf_asphodel_protocol_type_remote, tvb, 8, 1, ENC_NA);
proto_tree_add_item(protocol_type_tree, hf_asphodel_protocol_type_bootloader, tvb, 8, 1, ENC_NA);
offset = 9;
len = tvb_strsize(tvb, offset);
proto_tree_add_item(asphodel_tree, hf_asphodel_serial_number, tvb, offset, len, ENC_UTF_8 | ENC_NA);
serial_number = tvb_get_string_enc(pinfo->pool, tvb, offset, len, ENC_UTF_8);
col_add_fstr(pinfo->cinfo, COL_INFO, "Asphodel Response (%s)", serial_number);
offset += len;
proto_tree_add_item(asphodel_tree, hf_asphodel_board_rev, tvb, offset, 1, ENC_NA);
offset += 1;
len = tvb_strsize(tvb, offset);
proto_tree_add_item(asphodel_tree, hf_asphodel_board_type, tvb, offset, len, ENC_UTF_8 | ENC_NA);
offset += len;
len = tvb_strsize(tvb, offset);
proto_tree_add_item(asphodel_tree, hf_asphodel_build_info, tvb, offset, len, ENC_UTF_8 | ENC_NA);
offset += len;
len = tvb_strsize(tvb, offset);
proto_tree_add_item(asphodel_tree, hf_asphodel_build_date, tvb, offset, len, ENC_UTF_8 | ENC_NA);
offset += len;
len = tvb_strsize(tvb, offset);
proto_tree_add_item(asphodel_tree, hf_asphodel_user_tag1, tvb, offset, len, ENC_UTF_8 | ENC_NA);
offset += len;
len = tvb_strsize(tvb, offset);
proto_tree_add_item(asphodel_tree, hf_asphodel_user_tag2, tvb, offset, len, ENC_UTF_8 | ENC_NA);
offset += len;
if (protocol_type & ASPHODEL_PROTOCOL_TYPE_RADIO)
{
remote_incoming_cmd_buffer_size = tvb_get_ntohs(tvb, 2);
ti = proto_tree_add_uint(asphodel_tree, hf_asphodel_remote_max_incoming_param_length, tvb, offset, 2, remote_incoming_cmd_buffer_size - 2);
if (remote_incoming_cmd_buffer_size <= 2)
{
expert_add_info(pinfo, ti, &ei_asphodel_bad_param_length);
}
remote_outgoing_cmd_buffer_size = tvb_get_ntohs(tvb, 4);
ti = proto_tree_add_uint(asphodel_tree, hf_asphodel_remote_max_outgoing_param_length, tvb, offset + 2, 2, remote_outgoing_cmd_buffer_size - 2);
if (remote_outgoing_cmd_buffer_size <= 2)
{
expert_add_info(pinfo, ti, &ei_asphodel_bad_param_length);
}
proto_tree_add_item(asphodel_tree, hf_asphodel_remote_stream_packet_length, tvb, offset + 4, 2, ENC_BIG_ENDIAN);
}
conversation = find_conversation(pinfo->num, &pinfo->src, 0, CONVERSATION_UDP, pinfo->srcport, 0, NO_ADDR_B | NO_PORT_B);
if (!conversation)
{
conversation = conversation_new(pinfo->num, &pinfo->src, 0, CONVERSATION_TCP, pinfo->srcport, 0, NO_ADDR2 | NO_PORT2);
conversation_set_dissector(conversation, asphodel_tcp_handle);
}
return tvb_reported_length(tvb);
}
static int
dissect_asphodel_inquiry(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
proto_item *ti;
proto_tree *asphodel_tree;
conversation_t *conversation;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "Asphodel");
col_set_str(pinfo->cinfo, COL_INFO, "Asphodel Inquiry");
if (tree != NULL)
{
ti = proto_tree_add_item(tree, proto_asphodel, tvb, 0, -1, ENC_NA);
asphodel_tree = proto_item_add_subtree(ti, ett_asphodel);
proto_item_set_text(ti, "Asphodel Inquiry");
if (tvb_captured_length(tvb) >= 2)
{
proto_tree_add_item(asphodel_tree, hf_asphodel_version, tvb, 0, 2, ENC_BIG_ENDIAN);
if (tvb_captured_length(tvb) > 2)
{
proto_tree_add_item(asphodel_tree, hf_asphodel_identifier, tvb, 2, -1, ENC_UTF_8 | ENC_NA);
}
}
}
conversation = find_conversation(pinfo->num, &pinfo->src, 0, CONVERSATION_UDP, pinfo->srcport, 0, NO_ADDR_B | NO_PORT_B);
if (!conversation)
{
conversation = conversation_new(pinfo->num, &pinfo->src, 0, CONVERSATION_UDP, pinfo->srcport, 0, NO_ADDR2 | NO_PORT2);
conversation_set_dissector(conversation, asphodel_response_handle);
}
return tvb_reported_length(tvb);
}
static gboolean
dissect_asphodel_heur_udp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
if (tvb_captured_length(tvb) < 11)
{
return FALSE;
}
if (tvb_memeql(tvb, 2, "Asphodel", 9) != 0)
{
return FALSE;
}
dissect_asphodel_inquiry(tvb, pinfo, tree, data);
return TRUE;
}
void
proto_register_asphodel(void)
{
expert_module_t *expert_asphodel;
static hf_register_info hf[] = {
{ &hf_asphodel_version,
{ "Version", "asphodel.version",
FT_UINT16, BASE_CUSTOM, CF_FUNC(asphodel_fmt_version), 0x0,
NULL, HFILL }
},
{ &hf_asphodel_identifier,
{ "Identifier", "asphodel.identifier",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_asphodel_tcp_version,
{ "TCP Version", "asphodel.tcp_version",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_asphodel_connected,
{ "Connected", "asphodel.connected",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_asphodel_max_incoming_param_length,
{ "Max Incoming Param Length", "asphodel.max_incoming_param_length",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_asphodel_max_outgoing_param_length,
{ "Max Outgoing Param Length", "asphodel.max_outgoing_param_length",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_asphodel_stream_packet_length,
{ "Stream Packet Length", "asphodel.stream_packet_length",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_asphodel_protocol_type,
{ "Protocol Type", "asphodel.protocol_type",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_asphodel_protocol_type_rf_power,
{ "RF Power", "asphodel.protocol_type.rf_power",
FT_BOOLEAN, 8, TFS(&tfs_supported_not_supported), ASPHODEL_PROTOCOL_TYPE_RF_POWER,
NULL, HFILL }
},
{ &hf_asphodel_protocol_type_radio,
{ "Radio", "asphodel.protocol_type.radio",
FT_BOOLEAN, 8, TFS(&tfs_supported_not_supported), ASPHODEL_PROTOCOL_TYPE_RADIO,
NULL, HFILL }
},
{ &hf_asphodel_protocol_type_remote,
{ "Remote", "asphodel.protocol_type.remote",
FT_BOOLEAN, 8, TFS(&tfs_supported_not_supported), ASPHODEL_PROTOCOL_TYPE_REMOTE,
NULL, HFILL }
},
{ &hf_asphodel_protocol_type_bootloader,
{ "Bootloader", "asphodel.protocol_type.bootloader",
FT_BOOLEAN, 8, TFS(&tfs_supported_not_supported), ASPHODEL_PROTOCOL_TYPE_BOOTLOADER,
NULL, HFILL }
},
{ &hf_asphodel_serial_number,
{ "Serial Number", "asphodel.serial_number",
FT_STRINGZ, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_asphodel_board_rev,
{ "Board Rev", "asphodel.board_rev",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_asphodel_board_type,
{ "Board Type", "asphodel.board_type",
FT_STRINGZ, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_asphodel_build_info,
{ "Build Info", "asphodel.build_info",
FT_STRINGZ, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_asphodel_build_date,
{ "Build Date", "asphodel.build_date",
FT_STRINGZ, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_asphodel_user_tag1,
{ "User Tag 1", "asphodel.user_tag1",
FT_STRINGZ, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_asphodel_user_tag2,
{ "User Tag 2", "asphodel.user_tag2",
FT_STRINGZ, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_asphodel_remote_max_incoming_param_length,
{ "Remote Max Incoming Param Length", "asphodel.remote_max_incoming_param_length",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_asphodel_remote_max_outgoing_param_length,
{ "Remote Max Outgoing Param Length", "asphodel.remote_max_outgoing_param_length",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_asphodel_remote_stream_packet_length,
{ "Remote Stream Packet Length", "asphodel.remote_stream_packet_length",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_asphodel_length,
{ "Length", "asphodel.length",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_asphodel_type,
{ "Type", "asphodel.type",
FT_UINT8, BASE_HEX, VALS(asphodel_type_vals), 0x0,
NULL, HFILL }
},
{ &hf_asphodel_seq,
{ "Sequence", "asphodel.seq",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_asphodel_cmd,
{ "Command", "asphodel.cmd",
FT_UINT8, BASE_HEX, VALS(asphodel_cmd_vals), 0x0,
NULL, HFILL }
},
{ &hf_asphodel_err_code,
{ "Error Code", "asphodel.err_code",
FT_UINT8, BASE_HEX, VALS(asphodel_err_vals), 0x0,
NULL, HFILL }
},
{ &hf_asphodel_params,
{ "Command Parameter Data", "asphodel.params",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_asphodel_stream_data,
{ "Stream Data", "asphodel.stream_data",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_asphodel_notify,
{ "Notify", "asphodel.notify",
FT_BOOLEAN, BASE_NONE, TFS(&notify_connect_disconnect), 0x0,
NULL, HFILL }
},
{ &hf_asphodel_notify_serial,
{ "Notify Serial Number", "asphodel.notify_serial",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
};
static gint *ett[] = {
&ett_asphodel,
&ett_asphodel_protocol_type,
};
static ei_register_info ei[] = {
{ &ei_asphodel_bad_param_length,
{ "asphodel.bad_param_length", PI_PROTOCOL, PI_WARN,
"Bad parameter length", EXPFILL }
},
{ &ei_asphodel_bad_length,
{ "asphodel.bad_cmd_length", PI_PROTOCOL, PI_WARN,
"Bad length", EXPFILL }
},
{ &ei_asphodel_cmd_error,
{ "asphodel.cmd_error", PI_RESPONSE_CODE, PI_NOTE,
"Command error response", EXPFILL }
},
{ &ei_asphodel_unknown_type,
{ "asphodel.unknown_type", PI_PROTOCOL, PI_WARN,
"Unknown message type", EXPFILL }
},
};
/* Register the protocol name and description */
proto_asphodel = proto_register_protocol("Asphodel", "Asphodel", "asphodel");
/* Required function calls to register the header fields and subtrees */
proto_register_field_array(proto_asphodel, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
/* Required function calls to register expert items */
expert_asphodel = expert_register_protocol(proto_asphodel);
expert_register_field_array(expert_asphodel, ei, array_length(ei));
}
void
proto_reg_handoff_asphodel(void)
{
asphodel_inquiry_handle = create_dissector_handle(dissect_asphodel_inquiry, proto_asphodel);
asphodel_response_handle = create_dissector_handle(dissect_asphodel_response, proto_asphodel);
asphodel_tcp_handle = create_dissector_handle(dissect_asphodel_tcp, proto_asphodel);
heur_dissector_add("udp", dissect_asphodel_heur_udp, "Asphodel over UDP",
"asphodel_inquiry", proto_asphodel, HEURISTIC_ENABLE);
dissector_add_for_decode_as("udp.port", asphodel_response_handle);
dissector_add_for_decode_as("tcp.port", asphodel_tcp_handle);
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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