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lorawan_test.go
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lorawan_test.go
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package lorawan
import (
"bytes"
"encoding/hex"
"fmt"
"testing"
)
/*
* https://runkit.com/avbentem/deciphering-a-lorawan-otaa-join-accept
*
* Message Type = Join Request
* Appkey = B6B53F4A168A7A88BDF7EA135CE9CFCA
* AppEUI = 70B3D57ED00000DC
* DevEUI = 00AFEE7CF5ED6F1E
* DevNonce = CC85
* MIC = 587FE913
* => 00 DC 00 00 D0 7E D5 B3 70 1E 6F ED F5 7C EE AF 00 85 CC 58 7F E9 13
*/
func TestJoinRequest(t *testing.T) {
l := &LoraWanStack{}
l.Otaa.AppEUI = [8]byte{0x70, 0xB3, 0xD5, 0x7E, 0xD0, 0x00, 0x00, 0xDC}
l.Otaa.DevEUI = [8]byte{0x00, 0xAF, 0xEE, 0x7C, 0xF5, 0xED, 0x6F, 0x1E}
l.Otaa.AppKey = [16]byte{0xB6, 0xB5, 0x3F, 0x4A, 0x16, 0x8A, 0x7A, 0x88, 0xBD, 0xF7, 0xEA, 0x13, 0x5C, 0xE9, 0xCF, 0xCA}
l.Otaa.DevNonce = [2]byte{0xCC, 0x85}
fmt.Printf("*** TEST#1: Encoding a join Request\n")
expected := "00DC0000D07ED5B3701E6FEDF57CEEAF0085CC587FE913"
tex, _ := hex.DecodeString(expected)
j, _ := l.GenerateJoinRequest()
fmt.Printf("AppEui: %s\n", hex.EncodeToString(l.Otaa.AppEUI[:]))
fmt.Printf("DevEui: %s\n", hex.EncodeToString(l.Otaa.DevEUI[:]))
fmt.Printf("AppKey: %s\n", hex.EncodeToString(l.Otaa.AppKey[:]))
fmt.Printf("DevNonce: %s\n", hex.EncodeToString(l.Otaa.DevNonce[:]))
fmt.Printf("Build Join Request: %s\n", hex.EncodeToString(j[:]))
fmt.Printf("Expected Join Request: %s\n", hex.EncodeToString(tex[:]))
if !bytes.Equal(j[:], tex[:]) {
t.Errorf("Generated payload don't match exepted !! ")
}
}
func TestJoinAccept(t *testing.T) {
fmt.Printf(" We'll try to decode Lora Join Accept and check if sessions keys looks good")
l := &LoraWanStack{}
l.Otaa.AppEUI = [8]byte{0x70, 0xB3, 0xD5, 0x7E, 0xD0, 0x00, 0x00, 0xDC}
l.Otaa.DevEUI = [8]byte{0x00, 0xAF, 0xEE, 0x7C, 0xF5, 0xED, 0x6F, 0x1E}
l.Otaa.AppKey = [16]byte{0xB6, 0xB5, 0x3F, 0x4A, 0x16, 0x8A, 0x7A, 0x88, 0xBD, 0xF7, 0xEA, 0x13, 0x5C, 0xE9, 0xCF, 0xCA}
l.Otaa.DevNonce = [2]byte{0x85, 0xCC}
packet := "204DD85AE608B87FC4889970B7D2042C9E72959B0057AED6094B16003DF12DE145"
t1, _ := hex.DecodeString(packet)
err := l.DecodeJoinAccept(t1)
if err == nil {
// fmt.Printf("JoinAccept Decrypted: %s\n", hex.EncodeToString(decoded))
fmt.Printf("JoinAccept AppNonce: %s\n", hex.EncodeToString(l.Otaa.AppNonce[:]))
fmt.Printf("JoinAccept NetID: %s\n", hex.EncodeToString(l.Otaa.NetID[:]))
fmt.Printf("JoinAccept DevAddr: %s\n", hex.EncodeToString(l.Session.DevAddr[:]))
fmt.Printf("JoinAccept DLSettings: %02X\n", l.Session.DLSettings)
fmt.Printf("JoinAccept RXDelay: %02X\n", l.Session.RXDelay)
fmt.Printf("JoinAccept CFList: %s\n", hex.EncodeToString(l.Session.CFList[:]))
fmt.Printf("JoinAccept AppSkey: %s\n", hex.EncodeToString(l.Session.AppSKey[:]))
fmt.Printf("JoinAccept NwkSKey: %s\n", hex.EncodeToString(l.Session.NwkSKey[:]))
// What we expext to get
t1, _ := hex.DecodeString("2C96F7028184BB0BE8AA49275290D4FC") //NwkSKey
t2, _ := hex.DecodeString("F3A5C8F0232A38C144029C165865802C") //AppSKey
fmt.Printf("Expected AppSkey: %s\n", hex.EncodeToString(t2[:]))
fmt.Printf("Expected NwkSKey: %s\n", hex.EncodeToString(t1[:]))
if bytes.Equal(l.Session.NwkSKey[:], t1) && bytes.Equal(l.Session.AppSKey[:], t2) {
fmt.Println("Test OK")
} else {
t.Errorf("NwkSKey or AppSKey don't match ! ")
}
} else {
fmt.Println("Error decoding Join Accept Packet", err)
}
}
func TestUplinkMessage(t *testing.T) {
l := &LoraWanStack{}
l.Otaa.AppEUI = [8]byte{0x70, 0xB3, 0xD5, 0x7E, 0xD0, 0x00, 0x00, 0xDC}
l.Otaa.DevEUI = [8]byte{0x00, 0xAF, 0xEE, 0x7C, 0xF5, 0xED, 0x6F, 0x1E}
l.Otaa.AppKey = [16]byte{0xB6, 0xB5, 0x3F, 0x4A, 0x16, 0x8A, 0x7A, 0x88, 0xBD, 0xF7, 0xEA, 0x13, 0x5C, 0xE9, 0xCF, 0xCA}
l.Otaa.DevNonce = [2]byte{0x85, 0xCC}
msg := []byte("TinygoLorawan")
fmt.Printf("*** TEST#3: Unconfirmed Uplink Message\n")
fmt.Printf("We'll try to following payload '%s'[%s]\n", msg, hex.EncodeToString(msg[:]))
payload, err := l.GenMessage(0, msg)
// TODO add byte comparison check
if err == nil {
fmt.Printf("UplinkMessage: %s\n", hex.EncodeToString(payload[:]))
} else {
println("testUplinkMEssage error", err)
t.Errorf("Error while generating UplinkMessage")
}
}
/*
func main() {
l := &LoraWanStack{}
l.Otaa.AppEUI = []byte{0x70, 0xB3, 0xD5, 0x7E, 0xD0, 0x00, 0x00, 0xDC}
l.Otaa.DevEUI = []byte{0x00, 0xAF, 0xEE, 0x7C, 0xF5, 0xED, 0x6F, 0x1E}
l.Otaa.AppKey = []byte{0xB6, 0xB5, 0x3F, 0x4A, 0x16, 0x8A, 0x7A, 0x88, 0xBD, 0xF7, 0xEA, 0x13, 0x5C, 0xE9, 0xCF, 0xCA}
l.Otaa.DevNonce = []byte{0xCC, 0x85}
fmt.Printf("TEST APPEUI: %s\n", hex.EncodeToString(l.Otaa.AppEUI[:]))
fmt.Printf("TEST DEVEUI: %s\n", hex.EncodeToString(l.Otaa.DevEUI[:]))
fmt.Printf("TEST APPKEY: %s\n", hex.EncodeToString(l.Otaa.AppKey[:]))
fmt.Printf("TEST DEVNONCE: %s\n", hex.EncodeToString(l.Otaa.DevNonce[:]))
testJoinRequest(l)
testJoinAccept(l)
testUplinkMessage(l)
}
*/