X-Git-Url: https://git.r.bdr.sh/rbdr/mobius/blobdiff_plain/5c34f8752938764668d829fb284626b9c62c5475..refs/heads/main:/hotline/transfer.go

diff --git a/hotline/transfer.go b/hotline/transfer.go
index b8bec1d..53dd356 100644
--- a/hotline/transfer.go
+++ b/hotline/transfer.go
@@ -4,47 +4,55 @@ import (
 	"bytes"
 	"encoding/binary"
 	"errors"
+	"fmt"
+	"io"
 )
 
-type Transfer struct {
+type transfer struct {
 	Protocol        [4]byte // "HTXF" 0x48545846
-	ReferenceNumber [4]byte // Unique ID generated for the transfer
+	ReferenceNumber [4]byte // Unique Type generated for the transfer
 	DataSize        [4]byte // File size
 	RSVD            [4]byte // Not implemented in Hotline Protocol
 }
 
-func NewReadTransfer(b []byte) (Transfer, error) {
-	r := bytes.NewReader(b)
-	var transfer Transfer
+var HTXF = [4]byte{0x48, 0x54, 0x58, 0x46} // (HTXF) is the only supported transfer protocol
 
-	if err := binary.Read(r, binary.BigEndian, &transfer); err != nil {
-		return transfer, err
+func (tf *transfer) Write(b []byte) (int, error) {
+	if err := binary.Read(bytes.NewReader(b), binary.BigEndian, tf); err != nil {
+		return 0, err
 	}
 
-	// 0x48545846 (HTXF) is the only supported transfer protocol
-	if transfer.Protocol != [4]byte{0x48, 0x54, 0x58, 0x46} {
-		return transfer, errors.New("invalid protocol")
+	if tf.Protocol != HTXF {
+		return 0, errors.New("invalid protocol")
 	}
 
-	return transfer, nil
+	return len(b), nil
 }
 
-//
-//type FolderTransfer struct {
-//	Protocol        [4]byte // "HTXF" 0x48545846
-//	ReferenceNumber [4]byte // Unique ID generated for the transfer
-//	DataSize        [4]byte // File size
-//	RSVD            [4]byte // Not implemented in Hotline Protocol
-//	Action          [2]byte // Next file action
-//}
-//
-//func ReadFolderTransfer(b []byte) (FolderTransfer, error) {
-//	r := bytes.NewReader(b)
-//	var decodedEvent FolderTransfer
-//
-//	if err := binary.Read(r, binary.BigEndian, &decodedEvent); err != nil {
-//		return decodedEvent, err
-//	}
-//
-//	return decodedEvent, nil
-//}
+func receiveFile(r io.Reader, targetFile, resForkFile, infoFork, counterWriter io.Writer) error {
+	var ffo flattenedFileObject
+	if _, err := ffo.ReadFrom(r); err != nil {
+		return fmt.Errorf("read flatted file object: %v", err)
+	}
+
+	// Write the information fork
+	_, err := io.Copy(infoFork, &ffo.FlatFileInformationFork)
+	if err != nil {
+		return fmt.Errorf("write the information fork: %v", err)
+	}
+
+	if _, err = io.CopyN(targetFile, io.TeeReader(r, counterWriter), ffo.dataSize()); err != nil {
+		return fmt.Errorf("copy file data to partial file: %v", err)
+	}
+
+	if ffo.FlatFileHeader.ForkCount == [2]byte{0, 3} {
+		if err := binary.Read(r, binary.BigEndian, &ffo.FlatFileResForkHeader); err != nil {
+			return fmt.Errorf("read resource fork header: %v", err)
+		}
+
+		if _, err = io.CopyN(resForkFile, io.TeeReader(r, counterWriter), ffo.rsrcSize()); err != nil {
+			return fmt.Errorf("read resource fork: %v", err)
+		}
+	}
+	return nil
+}