Previously, the symlink size reported by a archive/tar header
was 0. This is incorrect, as the size of a symlink should be
the size of its contents, which is just the path to where
the symlink points to. Thus, the size of this file would just
be len(Linkname).
Signed-off-by: Stephen Chung <schung@redhat.com>
Currently, if you create a manifest with, say 'sha1', and another
manifest with 'sha1digest', gomtree will produce different output
with regard to the keyword name. I.e, `sha1=[...]` vs. `sha1digest=[...]`.
If we want to use synonyms for keywords, as well as align with upstream mtree
output, specifying 'sha1' and 'sha1digest' should impact gomtree's
in the same way.
Signed-off-by: Stephen Chung <schung@redhat.com>
if the keyword "tar_time" is present when evaluating
an Entry, gomtree should use the tar_time when evaluating
the "time" keyword as well. This commit also adds a test that
makes sure "tar_time" wins against "time" if both are present.
Some minor clean-ups as well, such as checking if KeywordFunc[keyword]
actually retrieves a function.
Signed-off-by: Stephen Chung <schung@redhat.com>
Since the field in a tar header for each file only preserves seconds
precision, not nanosecond precision, let's handle it special. This will
allow for more custom case handling in Check()
Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
Originally only returning `Sys.linkname` when evaluating
a tar header's link field. We want it to be in the form of
keyword=value instead.
Signed-off-by: Stephen Chung <schung@redhat.com>
when creating a manifest from, or validating, a stream like a tar
archive, it requires thinking about some of the functions differently
than walking a directory tree.
This is the beginning of allowing for such features.
Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
Fixes#7. Upper 3 bits are 'special' mode bits, and are not
included when calling info.Mode().Perm(). Need to mask
the info.Mode() with the corresponding mode bit defined
by the go library to see if these bits are set or not.
Signed-off-by: Stephen Chung <schung@redhat.com>
Setting up sibling and parent relationships for entries, so they can be
easier to walk.
Also, making "keyword=value" easier to parse. This helps filtering.
Both of these ready us for checking/validating a hierarchy.
Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
Initially only on linux platform, but could accommodate BSDs as well.
The keyword is rather a prefix of the key. So xattr keyword will have a
prefix of "xattr." followed by a suffix of its namespace and name.
The value stored in the manifest is the SHA1 digest of the extended
attribute's data.
Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
