Format [4]byte // Always "FILP"
Version [2]byte // Always 1
RSVD [16]byte // Always empty zeros
- ForkCount [2]byte // Always 2
+ ForkCount [2]byte // Number of forks
}
// NewFlatFileHeader returns a FlatFileHeader struct
// FlatFileInformationForkHeader is the second section of a "Flattened File Object"
type FlatFileInformationForkHeader struct {
- ForkType []byte // Always "INFO"
- CompressionType []byte // Always 0; Compression was never implemented in the Hotline protocol
- RSVD []byte // Always zeros
- DataSize []byte // Size of the flat file information fork
+ ForkType [4]byte // Always "INFO"
+ CompressionType [4]byte // Always 0; Compression was never implemented in the Hotline protocol
+ RSVD [4]byte // Always zeros
+ DataSize [4]byte // Size of the flat file information fork
}
type FlatFileInformationFork struct {
ModifyDate: modifyTime,
NameScript: make([]byte, 2), // TODO: What is this?
Name: []byte(fileName),
- CommentSize: []byte{0, 4},
- Comment: []byte("TODO"), // TODO: implement (maybe?)
+ CommentSize: []byte{0, 0},
+ Comment: []byte{}, // TODO: implement (maybe?)
}
}
// DataSize calculates the size of the flat file information fork, which is
// 72 bytes for the fixed length fields plus the length of the Name + Comment
-func (ffif FlatFileInformationFork) DataSize() []byte {
+func (ffif *FlatFileInformationFork) DataSize() []byte {
size := make([]byte, 4)
- //TODO: Can I do math directly on two byte slices?
+ // TODO: Can I do math directly on two byte slices?
dataSize := len(ffif.Name) + len(ffif.Comment) + 74
binary.BigEndian.PutUint32(size, uint32(dataSize))
return size
}
-func (ffo flattenedFileObject) TransferSize() []byte {
+func (ffo *flattenedFileObject) TransferSize() []byte {
payloadSize := len(ffo.BinaryMarshal())
- dataSize := binary.BigEndian.Uint32(ffo.FlatFileDataForkHeader.DataSize)
+ dataSize := binary.BigEndian.Uint32(ffo.FlatFileDataForkHeader.DataSize[:])
transferSize := make([]byte, 4)
binary.BigEndian.PutUint32(transferSize, dataSize+uint32(payloadSize))
return transferSize
}
-func (ffif FlatFileInformationFork) ReadNameSize() []byte {
+func (ffif *FlatFileInformationFork) ReadNameSize() []byte {
size := make([]byte, 2)
binary.BigEndian.PutUint16(size, uint16(len(ffif.Name)))
}
type FlatFileDataForkHeader struct {
- ForkType []byte
- CompressionType []byte
- RSVD []byte
- DataSize []byte
+ ForkType [4]byte
+ CompressionType [4]byte
+ RSVD [4]byte
+ DataSize [4]byte
}
-// ReadFlattenedFileObject parses a byte slice into a flattenedFileObject
-func ReadFlattenedFileObject(bytes []byte) flattenedFileObject {
- nameSize := bytes[110:112]
+func (ffif *FlatFileInformationFork) UnmarshalBinary(b []byte) error {
+
+ nameSize := b[70:72]
bs := binary.BigEndian.Uint16(nameSize)
- nameEnd := 112 + bs
+ nameEnd := 72 + bs
- commentSize := bytes[nameEnd : nameEnd+2]
+ commentSize := b[nameEnd : nameEnd+2]
commentLen := binary.BigEndian.Uint16(commentSize)
commentStartPos := int(nameEnd) + 2
commentEndPos := int(nameEnd) + 2 + int(commentLen)
- comment := bytes[commentStartPos:commentEndPos]
-
- //dataSizeField := bytes[nameEnd+14+commentLen : nameEnd+18+commentLen]
- //dataSize := binary.BigEndian.Uint32(dataSizeField)
-
- ffo := flattenedFileObject{
- FlatFileHeader: NewFlatFileHeader(),
- FlatFileInformationForkHeader: FlatFileInformationForkHeader{
- ForkType: bytes[24:28],
- CompressionType: bytes[28:32],
- RSVD: bytes[32:36],
- DataSize: bytes[36:40],
- },
- FlatFileInformationFork: FlatFileInformationFork{
- Platform: bytes[40:44],
- TypeSignature: bytes[44:48],
- CreatorSignature: bytes[48:52],
- Flags: bytes[52:56],
- PlatformFlags: bytes[56:60],
- RSVD: bytes[60:92],
- CreateDate: bytes[92:100],
- ModifyDate: bytes[100:108],
- NameScript: bytes[108:110],
- NameSize: bytes[110:112],
- Name: bytes[112:nameEnd],
- CommentSize: bytes[nameEnd : nameEnd+2],
- Comment: comment,
- },
- FlatFileDataForkHeader: FlatFileDataForkHeader{
- ForkType: bytes[commentEndPos : commentEndPos+4],
- CompressionType: bytes[commentEndPos+4 : commentEndPos+8],
- RSVD: bytes[commentEndPos+8 : commentEndPos+12],
- DataSize: bytes[commentEndPos+12 : commentEndPos+16],
- },
- }
-
- return ffo
+ comment := b[commentStartPos:commentEndPos]
+
+ ffif.Platform = b[0:4]
+ ffif.TypeSignature = b[4:8]
+ ffif.CreatorSignature = b[8:12]
+ ffif.Flags = b[12:16]
+ ffif.PlatformFlags = b[16:20]
+ ffif.RSVD = b[20:52]
+ ffif.CreateDate = b[52:60]
+ ffif.ModifyDate = b[60:68]
+ ffif.NameScript = b[68:70]
+ ffif.NameSize = b[70:72]
+ ffif.Name = b[72:nameEnd]
+ ffif.CommentSize = b[nameEnd : nameEnd+2]
+ ffif.Comment = comment
+
+ return nil
}
-func (f flattenedFileObject) BinaryMarshal() []byte {
+func (f *flattenedFileObject) BinaryMarshal() []byte {
var out []byte
out = append(out, f.FlatFileHeader.Format[:]...)
out = append(out, f.FlatFileHeader.Version[:]...)
out = append(out, f.FlatFileInformationFork.CommentSize...)
out = append(out, f.FlatFileInformationFork.Comment...)
- out = append(out, f.FlatFileDataForkHeader.ForkType...)
- out = append(out, f.FlatFileDataForkHeader.CompressionType...)
- out = append(out, f.FlatFileDataForkHeader.RSVD...)
- out = append(out, f.FlatFileDataForkHeader.DataSize...)
+ out = append(out, f.FlatFileDataForkHeader.ForkType[:]...)
+ out = append(out, f.FlatFileDataForkHeader.CompressionType[:]...)
+ out = append(out, f.FlatFileDataForkHeader.RSVD[:]...)
+ out = append(out, f.FlatFileDataForkHeader.DataSize[:]...)
return out
}
FlatFileHeader: NewFlatFileHeader(),
FlatFileInformationFork: NewFlatFileInformationFork(string(fileName), mTime),
FlatFileDataForkHeader: FlatFileDataForkHeader{
- ForkType: []byte("DATA"),
- CompressionType: []byte{0, 0, 0, 0},
- RSVD: []byte{0, 0, 0, 0},
- DataSize: dataSize,
+ ForkType: [4]byte{0x44, 0x41, 0x54, 0x41}, // "DATA"
+ CompressionType: [4]byte{},
+ RSVD: [4]byte{},
+ DataSize: [4]byte{dataSize[0], dataSize[1], dataSize[2], dataSize[3]},
},
}, nil
}
git.r.bdr.sh / rbdr / mobius / blobdiff