Total rework HAP pkg and HomeKit source

pkg/hap/helpers.go

@@ -1,6 +1,7 @@
 package hap
 
 import (
+	"crypto/ed25519"
 	"crypto/rand"
 	"crypto/sha512"
 	"encoding/hex"
@@ -10,8 +11,52 @@ import (
 	"net/http"
 )
 
+const (
+	TXTConfigNumber = "c#" // Current configuration number (ex. 1, 2, 3)
+	TXTDeviceID     = "id" // Device ID of the accessory (ex. 77:75:87:A0:7D:F4)
+	TXTModel        = "md" // Model name of the accessory (ex. MJCTD02YL)
+	TXTProtoVersion = "pv" // Protocol version string (ex. 1.1)
+	TXTStateNumber  = "s#" // Current state number (ex. 1)
+	TXTCategory     = "ci" // Accessory Category Identifier (ex. 2, 5, 17)
+	TXTSetupHash    = "sh" // Setup hash (ex. Y9w9hQ==)
+
+	// TXTFeatureFlags
+	//  - 0001b - Supports Apple Authentication Coprocessor
+	//  - 0010b - Supports Software Authentication
+	TXTFeatureFlags = "ff" // Pairing Feature flags (ex. 0, 1, 2)
+
+	// TXTStatusFlags
+	//  - 0001b - Accessory has not been paired with any controllers
+	//  - 0100b - A problem has been detected on the accessory
+	TXTStatusFlags = "sf" // Status flags (ex. 0, 1)
+
+	StateM1 = 1
+	StateM2 = 2
+	StateM3 = 3
+	StateM4 = 4
+	StateM5 = 5
+	StateM6 = 6
+
+	MethodPair          = 0
+	MethodPairMFi       = 1 // if device has MFI cert
+	MethodVerifyPair    = 2
+	MethodAddPairing    = 3
+	MethodDeletePairing = 4
+	MethodListPairings  = 5
+)
+
+const (
+	PermissionUser  = 0
+	PermissionAdmin = 1
+)
+
 const DeviceAID = 1 // TODO: fix someday
 
+func GenerateKey() []byte {
+	_, key, _ := ed25519.GenerateKey(nil)
+	return key
+}
+
 func GenerateID(name string) string {
 	sum := sha512.Sum512([]byte(name))
 	return fmt.Sprintf(
@@ -28,46 +73,22 @@ func GenerateUUID() string {
 	return s[:8] + "-" + s[8:12] + "-" + s[12:16] + "-" + s[16:20] + "-" + s[20:]
 }
 
-type PairVerifyPayload struct {
-	Method        byte   `tlv8:"0,optional"`
-	Identifier    string `tlv8:"1,optional"`
-	PublicKey     []byte `tlv8:"3,optional"`
-	EncryptedData []byte `tlv8:"5,optional"`
-	State         byte   `tlv8:"6,optional"`
-	Status        byte   `tlv8:"7,optional"`
-	Signature     []byte `tlv8:"10,optional"`
+func Append(items ...any) (b []byte) {
+	for _, item := range items {
+		switch v := item.(type) {
+		case string:
+			b = append(b, v...)
+		case []byte:
+			b = append(b, v[:]...)
+		default:
+			panic(v)
+		}
+	}
+	return
 }
 
-//func (c *Character) Unmarshal(value any) error {
-//	switch c.Format {
-//	case characteristic.FormatTLV8:
-//		data, err := base64.StdEncoding.DecodeString(c.Value.(string))
-//		if err != nil {
-//			return err
-//		}
-//		return tlv8.Unmarshal(data, value)
-//	}
-//	return nil
-//}
-
-//func (c *Character) Marshal(value any) error {
-//	switch c.Format {
-//	case characteristic.FormatTLV8:
-//		data, err := tlv8.Marshal(value)
-//		if err != nil {
-//			return err
-//		}
-//		c.Value = base64.StdEncoding.EncodeToString(data)
-//	}
-//	return nil
-//}
-
-func (c *Character) String() string {
-	data, err := json.Marshal(c)
-	if err != nil {
-		return "ERROR"
-	}
-	return string(data)
+func NewResponseError(req, res any) error {
+	return fmt.Errorf("hap: wrong response: %#v, on request: %#v", res, req)
 }
 
 func UnmarshalEvent(res *http.Response) (char *Character, err error) {