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IP400/Wireshark/ip400.fdesc
adrcs e8d8277b68
Added wireshark dissector files
2025-05-12 17:28:36 -06:00

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#
# IP400 Dissection field descriptions
# file usrp.fdesc
# M. Alcock, VE6VH (c)
# this template dissects IP400 packets
###########################################
# ip400 packet encoding
###########################################
enum8 T_ip400_msg_type
{
text_packet 0 # text packet
audio_packet 1 # compressed audio packet
video_packet 2 # compressed video packet
data_packet 3 # data packet
beacon_packet 4 # ping packet
ip_packet 5 # endcapsulted ip
ax25_packet 6 # ax.25 frame
dtmf_frame 7 # dtmf frame
dmr_frame 8 # dmr frame
dstar_frame 9 # dstar frame
tia_project25 10 # p25
nxdn_frame 11 # nxdn
m17_frame 12 # m17
unused_frame_1 13
unused_frame_2 14
command_frame 15 # local command frame
}
# Frame status
enum8 T_Frame_Status
{
Status_NO_DATA 0 # No data
Status_Complete 1 # Complete Frame
Status_Fragment 2 # Fragment
Status_Reassem 3 # Reassembled Frame
}
#data rate interpretation
switch T_Status_Switch
{
case T_Frame_Status::Status_NO_DATA : print ("?Invalid") ;
case T_Frame_Status::Status_Complete : print ("Complete Frame") ;
case T_Frame_Status::Status_Fragment : print ("Fragment") ;
case T_Frame_Status::Status_Reassem : print ("Reassembled Frame") ;
}
###########################################
# ip400 message header
###########################################
struct T_ip400_header
{
byte_order big_endian;
string(4) eye; # eye: ip+400
hide uint8 status; # status field
T_Status_Switch(status) Frame_Status;
uint16 offset; # offset
uint16 length; # length
byte_order little_endian;
uint32{d=hex} fromCall; # from callsign
byte_order big_endian;
uint16 fromport; # from port
uint32{d=hex} toCall; # to call sign
uint16 toport; # to port
T_ip400_msg_type msg_id; # message type
}
###########################################
# ip400 message flags
###########################################
struct T_ip400_flags
{
uint8 hopcount; # hop count
bool1 canrepeat; # can repeat
bool1 connectionless; # is connectionless
bool1 iscommand; # is a command
bool1 destext; # dest callsign extended
bool1 srcext; # src callsign extended
bool1 hasHopTable; # has a hop table
uint2 compression; # compression types
uint32{d=hex}[hopcount] hopTable; # hop table
}
###########################################
# decodes for the main message types
###########################################
# default packet type
struct T_ip400_packet
{
T_ip400_header header;
T_ip400_flags flags;
raw(*) data;
}
# data rate definitions
enum8 T_Data_Rates
{
Rate_2FSK_1200 0 # FSK 1200 bps
Rate_C4FM_9600 1 # C4FM 9600
Rate_4FSK_56Kb 2 # 4 FSK 56Kb
Rate_4FSK_100Kb 3 # 4 FSK 100Kb
Rate_4FSK_200Kb 4 # 4 FSK 200Kb
Rate_4FSK_300Kb 5 # 4 FSK 300Kb
Rate_4FSK_400Kb 6 # 4 FSK 400Kb
Rate_4FSK_600Kb 7 # 4 FSK 600Kb
Rate_OFDM_400Kb 8 # OFDM 400Kb
Rate_OFDM_800Kb 9 # OFDM 800Kb
Rate_OFDM_1200Kb 10 # OFDM 1200Kb
Rate_OFDM_1600Kb 11 # OFDM 1600Kb
Rate_OFDM_2400Kb 12 # OFDM 2400Kb
}
#data rate interpretation
switch T_Rate_Switch
{
case T_Data_Rates::Rate_2FSK_1200 : print ("FSK 1200bps") ;
case T_Data_Rates::Rate_C4FM_9600 : print ("C4FM 9600bps") ;
case T_Data_Rates::Rate_4FSK_56Kb : print ("4FSK 56Kbps") ;
case T_Data_Rates::Rate_4FSK_100Kb : print ("4FSK 100Kbps") ;
case T_Data_Rates::Rate_4FSK_200Kb : print ("4FSK 200Kbps") ;
case T_Data_Rates::Rate_4FSK_300Kb : print ("4FSK 300Kbps") ;
case T_Data_Rates::Rate_4FSK_400Kb : print ("4FSK 400Kbps") ;
case T_Data_Rates::Rate_4FSK_600Kb : print ("4FSK 600Kbps") ;
case T_Data_Rates::Rate_OFDM_400Kb : print ("OFDM 400Kbps") ;
case T_Data_Rates::Rate_OFDM_800Kb : print ("OFDM 800Kbps") ;
case T_Data_Rates::Rate_OFDM_1200Kb : print ("OFDM 1200Kbps") ;
case T_Data_Rates::Rate_OFDM_1600Kb : print ("OFDM 1600Kbps") ;
case T_Data_Rates::Rate_OFDM_2400Kb : print ("OFDM 2400Kbps") ;
}
#fix type interpretation
switch T_fixType_switch
{
case "FXD" : print ("Supplied Data");
case "GPS" : print ("GPS Receiver");
default : print ("Unknown");
}
# beacon header
struct T_ip400_beacon_header
{
hide uint3 rate_spec;
T_Rate_Switch(rate_spec) Rate;
bool1 extCall;
bool1 canRepeat;
bool1 isAREDN;
bool1 hssOFDM;
bool1 hasFSK;
hide uint8 TxOut;
print ("Tx Power +%d dBm", TxOut);
hide uint8 firm_major;
hide uint8 firm_minor;
print ("Firmware V%c.%c", firm_major, firm_minor);
}
# beacon position info
struct T_ip400_beacon_pos
{
hide string(3) fixType;
T_fixType_switch(fixType) Fix_Source;
hide string(1) delimeter;
string Position;
}
# beacon packet
struct T_ip400_beacon
{
T_ip400_header Header;
T_ip400_flags Flags;
T_ip400_beacon_header Beacon_Header;
T_ip400_beacon_pos Position;
}
# T_ip400_msg_type is the main message (as defined in the protocol description)
# according to the parameter msg_id (of type t_usrp_msg_type), we define
# the main message to be defined by one of the message types
switch T_ip400_switch T_ip400_msg_type
{
case T_ip400_msg_type::text_packet : T_ip400_packet "";
case T_ip400_msg_type::audio_packet : T_ip400_packet "";
case T_ip400_msg_type::video_packet : T_ip400_packet "";
case T_ip400_msg_type::beacon_packet : T_ip400_beacon "";
case T_ip400_msg_type::ip_packet : T_ip400_packet "";
case T_ip400_msg_type::ax25_packet : T_ip400_packet "";
case T_ip400_msg_type::dtmf_frame : T_ip400_packet "";
case T_ip400_msg_type::dmr_frame : T_ip400_packet "";
case T_ip400_msg_type::dstar_frame : T_ip400_packet "";
case T_ip400_msg_type::tia_project25 : T_ip400_packet "";
case T_ip400_msg_type::nxdn_frame : T_ip400_packet "";
case T_ip400_msg_type::m17_frame : T_ip400_packet "";
case T_ip400_msg_type::unused_frame_1 : T_ip400_packet "";
case T_ip400_msg_type::unused_frame_2 : T_ip400_packet "";
case T_ip400_msg_type::command_frame : T_ip400_packet "";
default : T_ip400_packet "";
}
#function to find usrp packets
function bool8 heuristic_func ()
{
byte_order big_endian;
string(4) header;
if (header != "IP4C")
{
return bool8::false;
}
return bool8::true;
}
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