[mynewt-imgmod] 05/09: Warn when `hashable` is used on an encrypted image

[cc...@apache.org]

This is an automated email from the ASF dual-hosted git repository.

ccollins pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/mynewt-imgmod.git

commit 60423a36f9f6da68ee3850e270d5b7f89d3cc43f
Author: Christopher Collins <cc...@apache.org>
AuthorDate: Fri May 24 12:31:49 2019 -0700

    Warn when `hashable` is used on an encrypted image
    
    An image's hash is calculated from the following two inputs:
    1. Image header.
    2. Unencrypted image body.
    
    The `image hashable` command extracts the header and body from a
    complete image.  If the image body is encrypted, then the result of this
    command will not generate the correct hash.
    
    This commit adds a warning in case `image hashable` is used on an
    encrypyted image.
---
 cli/image_cmds.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/cli/image_cmds.go b/cli/image_cmds.go
index 83b4e8f..4a926a4 100644
--- a/cli/image_cmds.go
+++ b/cli/image_cmds.go
@@ -310,6 +310,11 @@ func runHashableCmd(cmd *cobra.Command, args []string) {
 		ImgmodUsage(cmd, err)
 	}
 
+	if (img.Header.Flags & image.IMAGE_F_ENCRYPTED) != 0 {
+		util.StatusMessage(util.VERBOSITY_QUIET,
+			"* Warning: extracting hashable content from an encrypted image\n")
+	}
+
 	f, err := os.Create(outFilename)
 	if err != nil {
 		ImgmodUsage(nil, util.ChildNewtError(err))