image: calculate padding when parsing image
When parsing an image file, if the image indicates an extra-long header,
build a slice of bytes to hold the extra leading padding. This is
needed to perform the image hash calculation correctly.
diff --git a/image/parse.go b/image/parse.go
index 0fa7647..85f87e9 100644
--- a/image/parse.go
+++ b/image/parse.go
@@ -239,6 +239,11 @@
img.Tlvs = tlvs
img.ProtTlvs = protTlvs
+ extra := img.Header.HdrSz - IMAGE_HEADER_SIZE
+ if extra > 0 {
+ img.Pad = make([]byte, extra)
+ }
+
return img, nil
}
