Move clienhello to faketls

mtglib/internal/faketls/clienthello.go

@@ -1,4 +1,4 @@
-package clienthello
+package faketls
 
 import (
 	"crypto/hmac"
@@ -16,10 +16,10 @@ type ClientHello struct {
 	SessionID []byte
 }
 
-func ParseHandshake(secret, handshake []byte) (ClientHello, error) {
+func ParseClientHello(secret, handshake []byte) (ClientHello, error) {
 	hello := ClientHello{}
 
-	if len(handshake) < MinLen {
+	if len(handshake) < ClientHelloMinLen {
 		return hello, fmt.Errorf("lengh of handshake is too small: %d", len(handshake))
 	}
 
@@ -27,9 +27,9 @@ func ParseHandshake(secret, handshake []byte) (ClientHello, error) {
 		return hello, fmt.Errorf("unknown handshake type %#x", handshake[0])
 	}
 
-	copy(hello.Digest[:], handshake[RandomOffset:])
+	copy(hello.Digest[:], handshake[ClientHelloRandomOffset:])
 
-	for i := RandomOffset; i < RandomOffset+RandomLen; i++ {
+	for i := ClientHelloRandomOffset; i < ClientHelloRandomOffset+RandomLen; i++ {
 		handshake[i] = 0
 	}
 
@@ -60,8 +60,8 @@ func ParseHandshake(secret, handshake []byte) (ClientHello, error) {
 	timestamp := int64(binary.LittleEndian.Uint32(computedDigest[RandomLen-4:]))
 	hello.Time = time.Unix(timestamp, 0)
 
-	hello.SessionID = make([]byte, handshake[SessionIDOffset])
-	copy(hello.SessionID, handshake[SessionIDOffset+1:])
+	hello.SessionID = make([]byte, handshake[ClientHelloSessionIDOffset])
+	copy(hello.SessionID, handshake[ClientHelloSessionIDOffset+1:])
 
 	return hello, nil
 }

mtglib/internal/faketls/clienthello/init.go

@@ -1,17 +0,0 @@
-package clienthello
-
-import "errors"
-
-const (
-	RandomLen       = 32
-	RandomOffset    = 6
-	SessionIDOffset = RandomOffset + RandomLen
-	MinLen          = SessionIDOffset + 1
-
-	HandshakeTypeClient = 0x01
-)
-
-var (
-	ErrBadDigest        = errors.New("bad digest")
-	ErrAntiReplayAttack = errors.New("antireplay attack was detected")
-)

mtglib/internal/faketls/init.go

@@ -0,0 +1,18 @@
+package faketls
+
+import "errors"
+
+const (
+	RandomLen = 32
+
+	ClientHelloRandomOffset    = 6
+	ClientHelloSessionIDOffset = ClientHelloRandomOffset + RandomLen
+	ClientHelloMinLen      = ClientHelloSessionIDOffset + 1
+
+	HandshakeTypeClient = 0x01
+)
+
+var (
+	ErrBadDigest        = errors.New("bad digest")
+	ErrAntiReplayAttack = errors.New("antireplay attack was detected")
+)