mirror of
https://github.com/nonoo/kappanhang.git
synced 2025-12-06 08:02:00 +01:00
395 lines
15 KiB
Go
395 lines
15 KiB
Go
package main
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import (
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"bytes"
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"crypto/rand"
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"encoding/binary"
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"fmt"
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"net"
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"os"
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"os/signal"
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"syscall"
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"time"
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"github.com/nonoo/kappanhang/log"
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)
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var conn *net.UDPConn
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var localSID uint32
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var remoteSID uint32
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var sendSeq uint16
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var authSendSeq uint16
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var authInnerSendSeq uint16
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var authID [6]byte
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var randIDByteForPktSeven [1]byte
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var expectedPkt7ReplySeq uint16
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var lastReauthAt time.Time
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func send(d []byte) {
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_, err := conn.Write(d)
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if err != nil {
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log.Fatal(err)
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}
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}
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func read() ([]byte, error) {
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err := conn.SetReadDeadline(time.Now().Add(time.Second))
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if err != nil {
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log.Fatal(err)
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}
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b := make([]byte, 1500)
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n, _, err := conn.ReadFromUDP(b)
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if err != nil {
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if err, ok := err.(net.Error); ok && !err.Timeout() {
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log.Fatal(err)
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}
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}
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return b[:n], err
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}
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func setupCloseHandler() {
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c := make(chan os.Signal)
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signal.Notify(c, os.Interrupt, syscall.SIGTERM)
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go func() {
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<-c
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log.Print("disconnecting")
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sendDisconnect()
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os.Exit(0)
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}()
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}
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func sendPkt7(replyID []byte, seq uint16) {
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// Example request from PC: 0x15, 0x00, 0x00, 0x00, 0x07, 0x00, 0x09, 0x00, 0xbe, 0xd9, 0xf2, 0x63, 0xe4, 0x35, 0xdd, 0x72, 0x00, 0x78, 0x40, 0xf6, 0x02
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// Example reply from radio: 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x09, 0x00, 0xe4, 0x35, 0xdd, 0x72, 0xbe, 0xd9, 0xf2, 0x63, 0x01, 0x78, 0x40, 0xf6, 0x02
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var replyFlag byte
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if replyID == nil {
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replyID = make([]byte, 4)
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var randID [2]byte
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_, err := rand.Read(randID[:])
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if err != nil {
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log.Fatal(err)
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}
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replyID[0] = randID[0]
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replyID[1] = randID[1]
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replyID[2] = randIDByteForPktSeven[0]
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replyID[3] = 0x03
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} else {
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replyFlag = 0x01
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}
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expectedPkt7ReplySeq = sendSeq
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send([]byte{0x15, 0x00, 0x00, 0x00, 0x07, 0x00, byte(seq), byte(seq >> 8),
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byte(localSID >> 24), byte(localSID >> 16), byte(localSID >> 8), byte(localSID),
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byte(remoteSID >> 24), byte(remoteSID >> 16), byte(remoteSID >> 8), byte(remoteSID),
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replyFlag, replyID[0], replyID[1], replyID[2], replyID[3]})
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}
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func sendPkt3() {
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send([]byte{0x10, 0x00, 0x00, 0x00, 0x03, 0x00, byte(sendSeq), byte(sendSeq >> 8),
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byte(localSID >> 24), byte(localSID >> 16), byte(localSID >> 8), byte(localSID),
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byte(remoteSID >> 24), byte(remoteSID >> 16), byte(remoteSID >> 8), byte(remoteSID)})
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}
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func sendPkt6() {
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send([]byte{0x10, 0x00, 0x00, 0x00, 0x06, 0x00, 0x01, 0x00,
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byte(localSID >> 24), byte(localSID >> 16), byte(localSID >> 8), byte(localSID),
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byte(remoteSID >> 24), byte(remoteSID >> 16), byte(remoteSID >> 8), byte(remoteSID)})
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}
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func sendPktLogin() {
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// The reply to the login packet will contain a 6 bytes long auth ID with the first 2 bytes set to our randID.
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var randID [2]byte
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_, err := rand.Read(randID[:])
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if err != nil {
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log.Fatal(err)
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}
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send([]byte{0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00,
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byte(localSID >> 24), byte(localSID >> 16), byte(localSID >> 8), byte(localSID),
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byte(remoteSID >> 24), byte(remoteSID >> 16), byte(remoteSID >> 8), byte(remoteSID),
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0x00, 0x00, 0x00, 0x70, 0x01, 0x00, 0x00, byte(authInnerSendSeq),
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byte(authInnerSendSeq >> 8), 0x00, randID[0], randID[1], 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x2b, 0x3f, 0x55, 0x5c, 0x00, 0x00, 0x00, 0x00, // username: beer
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x2b, 0x3f, 0x55, 0x5c, 0x3f, 0x25, 0x77, 0x58, // pass: beerbeer
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x69, 0x63, 0x6f, 0x6d, 0x2d, 0x70, 0x63, 0x00, // icom-pc in plain text
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00})
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authSendSeq++
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authInnerSendSeq++
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}
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func sendPktReauth(firstReauthSend bool) {
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var magic byte
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if firstReauthSend {
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magic = 0x02
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} else {
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magic = 0x05
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}
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// Example request from PC: 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0d, 0x00,
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// 0xbb, 0x41, 0x3f, 0x2b, 0xe6, 0xb2, 0x7b, 0x7b,
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// 0x00, 0x00, 0x00, 0x30, 0x01, 0x05, 0x00, 0x02,
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// 0x00, 0x00, 0x5d, 0x37, 0x12, 0x82, 0x3b, 0xde,
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// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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// Example reply from radio: 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0e, 0x00,
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// 0xe6, 0xb2, 0x7b, 0x7b, 0xbb, 0x41, 0x3f, 0x2b,
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// 0x00, 0x00, 0x00, 0x30, 0x02, 0x05, 0x00, 0x02,
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// 0x00, 0x00, 0x5d, 0x37, 0x12, 0x82, 0x3b, 0xde,
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// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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send([]byte{0x40, 0x00, 0x00, 0x00, 0x00, 0x00, byte(authSendSeq), byte(authSendSeq >> 8),
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byte(localSID >> 24), byte(localSID >> 16), byte(localSID >> 8), byte(localSID),
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byte(remoteSID >> 24), byte(remoteSID >> 16), byte(remoteSID >> 8), byte(remoteSID),
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0x00, 0x00, 0x00, 0x30, 0x01, magic, 0x00, byte(authInnerSendSeq),
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byte(authInnerSendSeq >> 8), 0x00, authID[0], authID[1], authID[2], authID[3], authID[4], authID[5],
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00})
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authSendSeq++
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authInnerSendSeq++
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lastReauthAt = time.Now()
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}
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func sendDisconnect() {
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send([]byte{0x40, 0x00, 0x00, 0x00, 0x00, 0x00, byte(sendSeq), byte(sendSeq >> 8),
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byte(localSID >> 24), byte(localSID >> 16), byte(localSID >> 8), byte(localSID),
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byte(remoteSID >> 24), byte(remoteSID >> 16), byte(remoteSID >> 8), byte(remoteSID),
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0x00, 0x00, 0x00, 0x30, 0x01, 0x01, 0x00, byte(authInnerSendSeq),
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byte(authInnerSendSeq >> 8), 0x00, authID[0], authID[1], authID[2], authID[3], authID[4], authID[5],
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00})
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send([]byte{0x10, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00,
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byte(localSID >> 24), byte(localSID >> 16), byte(localSID >> 8), byte(localSID),
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byte(remoteSID >> 24), byte(remoteSID >> 16), byte(remoteSID >> 8), byte(remoteSID)})
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}
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func sendRequestSerialAndAudio() {
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log.Print("requesting serial and audio stream")
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send([]byte{0x90, 0x00, 0x00, 0x00, 0x00, 0x00, byte(authSendSeq), byte(authSendSeq >> 8),
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byte(localSID >> 24), byte(localSID >> 16), byte(localSID >> 8), byte(localSID), byte(remoteSID >> 24), byte(remoteSID >> 16), byte(remoteSID >> 8), byte(remoteSID),
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0x00, 0x00, 0x00, 0x80, 0x01, 0x03, 0x00, byte(authInnerSendSeq),
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byte(authInnerSendSeq >> 8), 0x00, authID[0], authID[1], authID[2], authID[3], authID[4], authID[5],
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10,
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0x80, 0x00, 0x00, 0x90, 0xc7, 0x0e, 0x86, 0x01, // The last 5 bytes from this row can be acquired from a reply starting with 0xa8 or 0x90
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x49, 0x43, 0x2d, 0x37, 0x30, 0x35, 0x00, 0x00, // IC-705 in plain text
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x2b, 0x3f, 0x55, 0x5c, 0x00, 0x00, 0x00, 0x00, // username: beer
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x01, 0x01, 0x04, 0x04, 0x00, 0x00, 0xbb, 0x80,
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0x00, 0x00, 0xbb, 0x80, 0x00, 0x00, 0xc3, 0x52,
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0x00, 0x00, 0xc3, 0x53, 0x00, 0x00, 0x00, 0x64,
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00})
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authSendSeq++
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authInnerSendSeq++
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}
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func main() {
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log.Init()
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parseArgs()
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setupCloseHandler()
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hostPort := fmt.Sprint(connectAddress, ":50001")
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log.Print("connecting to ", hostPort)
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raddr, err := net.ResolveUDPAddr("udp", hostPort)
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if err != nil {
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log.Fatal(err)
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}
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laddr := net.UDPAddr{
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Port: 50001,
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}
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conn, err = net.DialUDP("udp", &laddr, raddr)
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if err != nil {
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log.Fatal(err)
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}
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localSID = uint32(time.Now().Unix())
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log.Debugf("using session id %.8x", localSID)
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sendPkt3()
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sendSeq = 1
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sendPkt7(nil, sendSeq)
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sendSeq = 0
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sendPkt3()
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for {
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// Expecting a Pkt4 answer.
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// Example answer from radio: 0x10, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x8c, 0x7d, 0x45, 0x7a, 0x1d, 0xf6, 0xe9, 0x0b
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r, _ := read()
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if len(r) == 16 && bytes.Equal(r[:8], []byte{0x10, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00}) {
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remoteSID = binary.BigEndian.Uint32(r[8:12])
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break
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}
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}
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log.Debugf("got remote session id %.8x", remoteSID)
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authSendSeq = 1
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authInnerSendSeq = 0x50
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sendPkt6()
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for {
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// Expecting a Pkt6 answer.
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r, _ := read()
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if len(r) == 16 && bytes.Equal(r[:8], []byte{0x10, 0x00, 0x00, 0x00, 0x06, 0x00, 0x01, 0x00}) {
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remoteSID = binary.BigEndian.Uint32(r[8:12])
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break
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}
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}
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sendPktLogin()
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sendSeq = 5
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// Example success auth packet: 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00,
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// 0xe6, 0xb2, 0x7b, 0x7b, 0xbb, 0x41, 0x3f, 0x2b,
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// 0x00, 0x00, 0x00, 0x50, 0x02, 0x00, 0x00, 0x00,
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// 0x00, 0x00, 0x5d, 0x37, 0x12, 0x82, 0x3b, 0xde,
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// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// 0x46, 0x54, 0x54, 0x48, 0x00, 0x00, 0x00, 0x00,
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// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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for {
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r, _ := read()
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if len(r) == 96 && bytes.Equal(r[:8], []byte{0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00}) {
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if bytes.Equal(r[48:52], []byte{0xff, 0xff, 0xff, 0xfe}) {
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log.Fatal("invalid user/password")
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}
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copy(authID[:], r[26:32])
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log.Print("auth ok")
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sendPktReauth(true)
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time.AfterFunc(time.Second*2, sendRequestSerialAndAudio)
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break
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}
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}
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var lastPingAt time.Time
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var lastStatusLog time.Time
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var errCount int
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_, err = rand.Read(randIDByteForPktSeven[:])
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if err != nil {
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log.Fatal(err)
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}
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for {
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r, err := read()
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if err != nil {
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errCount++
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if errCount > 5 {
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log.Fatal("timeout")
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}
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log.Error("stream break detected")
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}
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errCount = 0
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if len(r) == 21 && bytes.Equal(r[1:6], []byte{0x00, 0x00, 0x00, 0x07, 0x00}) {
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gotSeq := binary.LittleEndian.Uint16(r[6:8])
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if r[16] == 0x00 { // This is a pkt7 request from the radio.
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// Replying to the radio.
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// Example request from radio: 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x1c, 0x0e, 0xe4, 0x35, 0xdd, 0x72, 0xbe, 0xd9, 0xf2, 0x63, 0x00, 0x57, 0x2b, 0x12, 0x00
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// Example answer from PC: 0x15, 0x00, 0x00, 0x00, 0x07, 0x00, 0x1c, 0x0e, 0xbe, 0xd9, 0xf2, 0x63, 0xe4, 0x35, 0xdd, 0x72, 0x01, 0x57, 0x2b, 0x12, 0x00
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sendPkt7(r[17:21], gotSeq)
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} else {
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if expectedPkt7ReplySeq != gotSeq { // TODO
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var missingPkts int
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if gotSeq > expectedPkt7ReplySeq {
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missingPkts = int(gotSeq) - int(expectedPkt7ReplySeq)
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} else {
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missingPkts = int(gotSeq) + 65536 - int(expectedPkt7ReplySeq)
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}
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if missingPkts < 1000 {
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log.Error("lost ", missingPkts, " packets ", gotSeq, " ", expectedPkt7ReplySeq)
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}
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}
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}
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}
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if len(r) == 16 && bytes.Equal(r[:6], []byte{0x10, 0x00, 0x00, 0x00, 0x00, 0x00}) {
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// Replying to the radio.
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// Example request from radio: 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0xe4, 0x35, 0xdd, 0x72, 0xbe, 0xd9, 0xf2, 0x63
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// Example answer from PC: 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0xbe, 0xd9, 0xf2, 0x63, 0xe4, 0x35, 0xdd, 0x72
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gotSeq := binary.LittleEndian.Uint16(r[6:8])
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send([]byte{0x10, 0x00, 0x00, 0x00, 0x00, 0x00, byte(gotSeq), byte(gotSeq >> 8), byte(localSID >> 24), byte(localSID >> 16), byte(localSID >> 8), byte(localSID), byte(remoteSID >> 24), byte(remoteSID >> 16), byte(remoteSID >> 8), byte(remoteSID)})
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}
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if len(r) == 80 && bytes.Equal(r[:6], []byte{0x50, 0x00, 0x00, 0x00, 0x00, 0x00}) && bytes.Equal(r[48:51], []byte{0xff, 0xff, 0xff}) {
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// Example answer from radio: 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00,
|
|
// 0x86, 0x1f, 0x2f, 0xcc, 0x03, 0x03, 0x89, 0x29,
|
|
// 0x00, 0x00, 0x00, 0x40, 0x02, 0x03, 0x00, 0x52,
|
|
// 0x00, 0x00, 0xf8, 0xad, 0x06, 0x8d, 0xda, 0x7b,
|
|
// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10,
|
|
// 0x80, 0x00, 0x00, 0x90, 0xc7, 0x0e, 0x86, 0x01,
|
|
// 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,
|
|
// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
|
|
|
|
log.Error("reauth failed")
|
|
sendDisconnect()
|
|
os.Exit(1)
|
|
}
|
|
if len(r) == 144 && bytes.Equal(r[:6], []byte{0x90, 0x00, 0x00, 0x00, 0x00, 0x00}) && r[96] == 1 {
|
|
// Example answer:
|
|
// 0x90, 0x00, 0x00, 0x00, 0x00, 0x00, 0x19, 0x00,
|
|
// 0xc6, 0x5f, 0x6f, 0x0c, 0x5f, 0x8b, 0x1e, 0x89,
|
|
// 0x00, 0x00, 0x00, 0x80, 0x03, 0x00, 0x00, 0x00,
|
|
// 0x00, 0x00, 0x31, 0x30, 0x31, 0x47, 0x39, 0x07,
|
|
// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10,
|
|
// 0x80, 0x00, 0x00, 0x90, 0xc7, 0x0e, 0x86, 0x01,
|
|
// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
// 0x49, 0x43, 0x2d, 0x37, 0x30, 0x35, 0x00, 0x00,
|
|
// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
// 0x01, 0x00, 0x00, 0x00, 0x69, 0x63, 0x6f, 0x6d,
|
|
// 0x2d, 0x70, 0x63, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
// 0x00, 0x00, 0x00, 0x00, 0xc0, 0xa8, 0x03, 0x03,
|
|
// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
|
|
log.Print("serial and audio request success")
|
|
go openAudioStream()
|
|
}
|
|
|
|
if time.Since(lastPingAt) >= 100*time.Millisecond {
|
|
sendPkt7(nil, sendSeq)
|
|
sendPkt3()
|
|
sendSeq++
|
|
lastPingAt = time.Now()
|
|
|
|
if time.Since(lastReauthAt) >= 60*time.Second {
|
|
sendPktReauth(false)
|
|
}
|
|
|
|
if time.Since(lastStatusLog) >= 10*time.Second {
|
|
log.Print("still connected")
|
|
lastStatusLog = time.Now()
|
|
}
|
|
}
|
|
}
|
|
}
|