mirror of
https://github.com/lwvmobile/dsd-fme.git
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DMR: Add Handling for IPv4 UDP / ICMP / UNK Protocol PDUs;
This commit is contained in:
lwvmobile
144
src/dmr_pdu.c
144
src/dmr_pdu.c
@@ -219,76 +219,100 @@ void dmr_ip_pdu (dsd_opts * opts, dsd_state * state, uint16_t len, uint8_t * DMR
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uint16_t hsum = (DMR_PDU[10] << 8) | DMR_PDU[11];
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if (opts->payload == 1)
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fprintf (stderr, "\n IPv%d; Header Len: %d; Type of Service: %d; Total Len: %d; IP ID: %02X; Flags: %X;\n Fragment Offset: %d; TTL: %d; Protocol: %02X; Checksum: %04X; PDU Len: %d;", version, ihl, tos, tlen, iden, ipf, offset, ttl, prot, hsum, len);
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fprintf (stderr, "\n IPv%d; IHL: %d; Type of Service: %d; Total Len: %d; IP ID: %04X; Flags: %X;\n Fragment Offset: %d; TTL: %d; Protocol: 0x%02X; Checksum: %04X; PDU Len: %d;", version, ihl, tos, tlen, iden, ipf, offset, ttl, prot, hsum, len);
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//take a look at the src, dst, and port indicated (assuming both ports will match)
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uint32_t src24 = (DMR_PDU[13] << 16) | (DMR_PDU[14] << 8) | DMR_PDU[15];
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uint32_t dst24 = (DMR_PDU[17] << 16) | (DMR_PDU[18] << 8) | DMR_PDU[19];
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uint16_t port1 = (DMR_PDU[20] << 8) | DMR_PDU[21];
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uint16_t port2 = (DMR_PDU[22] << 8) | DMR_PDU[23];
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fprintf (stderr, "\n SRC(24): %08d; IP: %03d.%03d.%03d.%03d; Port: %04d; ", src24, DMR_PDU[12], DMR_PDU[13], DMR_PDU[14], DMR_PDU[15], port1);
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fprintf (stderr, "\n DST(24): %08d; IP: %03d.%03d.%03d.%03d; Port: %04d; ", dst24, DMR_PDU[16], DMR_PDU[17], DMR_PDU[18], DMR_PDU[19], port2);
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fprintf (stderr, "\n SRC(24): %08d; IP: %03d.%03d.%03d.%03d; ", src24, DMR_PDU[12], DMR_PDU[13], DMR_PDU[14], DMR_PDU[15]);
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if (prot == 0x11) fprintf (stderr, "Port: %04d; ", port1);
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fprintf (stderr, "\n DST(24): %08d; IP: %03d.%03d.%03d.%03d; ", dst24, DMR_PDU[16], DMR_PDU[17], DMR_PDU[18], DMR_PDU[19]);
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if (prot == 0x11) fprintf (stderr, "Port: %04d; ", port2);
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uint16_t udp_len = (DMR_PDU[24] << 8) | DMR_PDU[25]; //This UDP Length information element is the length in bytes of this user datagram including this header and the application data (no IP header)
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uint16_t udp_chk = (DMR_PDU[26] << 8) | DMR_PDU[27];
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if (opts->payload == 1)
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fprintf (stderr, "\n UDP Datagram Len: %d; UDP Checksum: %04X; ", udp_len, udp_chk);
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//IP Protocol List: https://en.wikipedia.org/wiki/List_of_IP_protocol_numbers
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if (prot == 0x01) //ICMP
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{
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uint8_t icmp_type = DMR_PDU[20];
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uint8_t icmp_code = DMR_PDU[21];
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uint16_t icmp_chk = port2;
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fprintf (stderr, "\n ICMP Protocol; Type: %02X; Code: %02X; Checksum: %02X;", icmp_type, icmp_code, icmp_chk);
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//see: https://en.wikipedia.org/wiki/Internet_Control_Message_Protocol
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//look at attached message, if present
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if (DMR_PDU[28] == 0x45) //if another chained IPv4 header and/or message
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{
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fprintf (stderr, "\n ------------Attached Message-------------");
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dmr_ip_pdu(opts, state, len-28, DMR_PDU+28);
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}
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}
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//Are IP DMR PDU types only dictated by Port Number? Or is this just the defaults when programmed?
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if (port1 == 231 && port2 == 231)
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else if (prot == 0x11) //UDP
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{
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fprintf (stderr, "Cellocator;");
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uint16_t udp_len = (DMR_PDU[24] << 8) | DMR_PDU[25]; //This UDP Length information element is the length in bytes of this user datagram including this header and the application data (no IP header)
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uint16_t udp_chk = (DMR_PDU[26] << 8) | DMR_PDU[27];
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fprintf (stderr, "\n UDP Protocol; Datagram Len: %d; UDP Checksum: %04X; ", udp_len, udp_chk);
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//Are IP DMR PDU types only dictated by Port Number? Or is this just the defaults when programmed?
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if (port1 == 231 && port2 == 231)
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{
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fprintf (stderr, "Cellocator;");
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}
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else if (port1 == 4001 && port2 == 4001)
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{
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fprintf (stderr, "LRRP;");
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dmr_lrrp (opts, state, len-28-4-1, src24, dst24, DMR_PDU+28); //len is offset with IP and UDP header lens, 4 CRC, and 1 for the 0D token
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}
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else if (port1 == 4004 && port2 == 4004)
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{
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fprintf (stderr, "XCMP;");
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}
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else if (port1 == 4005 && port2 == 4005)
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{
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fprintf (stderr, "ARS;");
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}
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else if (port1 == 4007 && port2 == 4007)
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{
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uint16_t tms_len = (DMR_PDU[28] << 8) | DMR_PDU[29]; //this as len makes sense, its always 10 less than the UDP Datagram len value
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unsigned long long int tms_unk = ((unsigned long long int)DMR_PDU[30] << 32UL) | (DMR_PDU[31] << 24) | (DMR_PDU[32] << 16) | (DMR_PDU[33] << 8) | DMR_PDU[34];
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fprintf (stderr, "TMS; ");
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fprintf (stderr, "Len: %d; ???: %010llX;", tms_len, tms_unk);
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utf16_to_text(len, DMR_PDU+35);
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}
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else if (port1 == 4008 && port2 == 4008)
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{
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fprintf (stderr, "Telemetry;");
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}
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else if (port1 == 4009 && port2 == 4009)
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{
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fprintf (stderr, "OTAP;");
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}
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else if (port1 == 4012 && port2 == 4012)
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{
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fprintf (stderr, "Battery Management;");
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}
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else if (port1 == 4013 && port2 == 4013)
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{
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fprintf (stderr, "Job Ticket Server;");
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}
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//ETSI specific
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else if (port1 == 5016 && port2 == 5016)
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{
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fprintf (stderr, "TMS;");
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utf16_to_text(len, DMR_PDU+35);
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}
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else if (port1 == 5017 && port2 == 5017)
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{
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uint8_t DMR_PDU_bits[127*8]; memset(DMR_PDU_bits, 0, sizeof(DMR_PDU_bits));
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unpack_byte_array_into_bit_array(DMR_PDU+35, DMR_PDU_bits, (len-4-35)*sizeof(uint8_t));
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lip_protocol_decoder(opts, state, DMR_PDU_bits);
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}
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else fprintf (stderr, "Unknown UDP Contents;");
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}
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else if (port1 == 4001 && port2 == 4001)
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{
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fprintf (stderr, "LRRP;");
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dmr_lrrp (opts, state, len-28-4-1, src24, dst24, DMR_PDU+28); //len is offset with IP and UDP header lens, 4 CRC, and 1 for the 0D token
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}
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else if (port1 == 4004 && port2 == 4004)
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{
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fprintf (stderr, "XCMP;");
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}
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else if (port1 == 4005 && port2 == 4005)
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{
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fprintf (stderr, "ARS;");
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}
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else if (port1 == 4007 && port2 == 4007)
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{
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uint16_t tms_len = (DMR_PDU[28] << 8) | DMR_PDU[29]; //this as len makes sense, its always 10 less than the UDP Datagram len value
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unsigned long long int tms_unk = ((unsigned long long int)DMR_PDU[30] << 32UL) | (DMR_PDU[31] << 24) | (DMR_PDU[32] << 16) | (DMR_PDU[33] << 8) | DMR_PDU[34];
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fprintf (stderr, "TMS; ");
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fprintf (stderr, "Len: %d; ???: %010llX;", tms_len, tms_unk);
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utf16_to_text(len, DMR_PDU+35);
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}
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else if (port1 == 4008 && port2 == 4008)
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{
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fprintf (stderr, "Telemetry;");
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}
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else if (port1 == 4009 && port2 == 4009)
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{
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fprintf (stderr, "OTAP;");
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}
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else if (port1 == 4012 && port2 == 4012)
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{
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fprintf (stderr, "Battery Management;");
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}
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else if (port1 == 4013 && port2 == 4013)
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{
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fprintf (stderr, "Job Ticket Server;");
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}
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//ETSI specific
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else if (port1 == 5016 && port2 == 5016)
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{
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fprintf (stderr, "TMS;");
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utf16_to_text(len, DMR_PDU+35);
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}
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else if (port1 == 5017 && port2 == 5017)
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{
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uint8_t DMR_PDU_bits[127*8]; memset(DMR_PDU_bits, 0, sizeof(DMR_PDU_bits));
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unpack_byte_array_into_bit_array(DMR_PDU+35, DMR_PDU_bits, (len-4-35)*sizeof(uint8_t));
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lip_protocol_decoder(opts, state, DMR_PDU_bits);
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}
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else fprintf (stderr, "Unknown PDU Contents;");
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else fprintf (stderr, "Unknown Protocol: %02X;", prot);
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}
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