associating a property with a subpart of a message
Daniel Kahn Gillmor
dkg at fifthhorseman.net
Wed Aug 2 16:35:45 PDT 2017
hey folks--
I have some message properties i'd like to cache in notmuch that
strictly apply to specific subparts of the message. (e.g. session keys
for an encrypted part, signature verification status of a signed part)
let's assume that for any given copy of a message, we have a reliable
"address" scheme for a part (e.g. "1.2.1.1").
However, this becomes confusing with multiple copies of a given message.
It's possible that one copy of the message has one MIME structure, but
mangling (by MTAs, mailing lists, etc) result in a different MIME
structure in another copy.
For cryptographic properties, it might be nice to associate a subpart
with a particular cryptographic digest of the subpart itself.
Alternately, from a filesystem perspective, maybe it would be better to
label the subpart based on the underlying physical file, and the
subpart's "address".
Are there other options?
If you wanted to associate a message property with a subpart of a given
message in a way that was reliable, especially in this new era of
multiple copies of a message, how would you do it?
--dkg
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