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keywords: switch 'xattr' to base64

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Rather than an arbitrary election of hashing the xattr value with SHA1
to avoid leaking the value. By going with base64 encoding it allows for
the possibility of restoring a directory with the values stored in the
manifest.

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
This commit is contained in:
Vincent Batts 2016-07-27 17:40:51 -04:00
parent 27459241ae
commit 7e2ed0b70b
2 changed files with 10 additions and 12 deletions
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6
keywords_linux.go
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@ -2,7 +2,7 @@ package mtree
import (
"archive/tar"
"crypto/sha1"
"encoding/base64"
"fmt"
"io"
"os"
@ -55,7 +55,7 @@ var (
}
klist := []string{}
for k, v := range hdr.Xattrs {
klist = append(klist, fmt.Sprintf("xattr.%s=%x", k, sha1.Sum([]byte(v))))
klist = append(klist, fmt.Sprintf("xattr.%s=%s", k, base64.StdEncoding.EncodeToString([]byte(v))))
}
return strings.Join(klist, " "), nil
}
@ -70,7 +70,7 @@ var (
if err != nil {
return "", err
}
klist[i] = fmt.Sprintf("xattr.%s=%x", xlist[i], sha1.Sum(data))
klist[i] = fmt.Sprintf("xattr.%s=%s", xlist[i], base64.StdEncoding.EncodeToString(data))
}
return strings.Join(klist, " "), nil
}