1 files changed, 7 insertions, 1 deletions
diff --git a/struct.go b/struct.go
index eef0b91..123f895 100644
--- a/struct.go
+++ b/struct.go
@@ -41,7 +41,7 @@ const (
 	fileHeaderLen            = 26         // + filename + extra
 	directoryHeaderLen       = 42         // + filename + extra + comment
 	directoryEndLen          = 18         // + comment
-	dataDescriptorLen        = 16         // four uint32: descriptor signature, crc32, compressed size, size
+	dataDescriptorLen        = 12         // four uint32: descriptor signature, crc32, compressed size, size
 	dataDescriptor64Len      = 24         // two uint32: signature, crc32 | two uint64: compressed size, size
 	directory64LocLen        = 20         //
 	directory64EndLen        = 56         // + extra
@@ -135,6 +135,10 @@ type FileHeader struct {
 	UncompressedSize64 uint64
 	Extra              []byte
 	ExternalAttrs      uint32 // Meaning depends on CreatorVersion
+
+	DescriptorCRC32            uint32
+	DescriptorCompressedSize   uint32
+	DescriptorUncompressedSize uint32
 }
 
 // FileInfo returns an fs.FileInfo for the FileHeader.
@@ -199,6 +203,8 @@ type directoryEnd struct {
 	DirectoryOffset    uint64 // relative to file
 	CommentLen         uint16
 	Comment            string
+
+	HeaderOffset int64 // includes overall ZIP archive baseOffset
 }
 
 // timeZone returns a *time.Location based on the provided offset.