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124 lines
4.5 KiB
ReStructuredText
124 lines
4.5 KiB
ReStructuredText
==================
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notmuch-properties
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==================
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SYNOPSIS
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========
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**notmuch** **count** **property:**\ <*key*>=<*value*>
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**notmuch** **search** **property:**\ <*key*>=<*value*>
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**notmuch** **show** **property:**\ <*key*>=<*value*>
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**notmuch** **reindex** **property:**\ <*key*>=<*value*>
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**notmuch** **tag** +<*tag*> **property:**\ <*key*>=<*value*>
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**notmuch** **dump** **--include=properties**
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**notmuch** **restore** **--include=properties**
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DESCRIPTION
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===========
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Several notmuch commands can search for, modify, add or remove
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properties associated with specific messages. Properties are
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key/value pairs, and a message can have more than one key/value pair
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for the same key.
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While users can select based on a specific property in their search
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terms with the prefix **property:**, the notmuch command-line
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interface does not provide mechanisms for modifying properties
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directly to the user.
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Instead, message properties are expected to be set and used
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programmatically, according to logic in notmuch itself, or in
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extensions to it.
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Extensions to notmuch which make use of properties are encouraged to
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report the specific properties used to the upstream notmuch project,
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as a way of avoiding collisions in the property namespace.
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CONVENTIONS
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===========
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Any property with a key that starts with "index." will be removed (and
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possibly re-set) upon reindexing (see **notmuch-reindex(1)**).
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MESSAGE PROPERTIES
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==================
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The following properties are set by notmuch internally in the course
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of its normal activity.
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**index.decryption**
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If a message contains encrypted content, and notmuch tries to
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decrypt that content during indexing, it will add the property
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``index.decryption=success`` when the cleartext was successfully
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indexed. If notmuch attempts to decrypt any part of a message
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during indexing and that decryption attempt fails, it will add the
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property ``index.decryption=failure`` to the message.
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Note that it's possible for a single message to have both
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``index.decryption=success`` and ``index.decryption=failure``.
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Consider an encrypted e-mail message that contains another
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encrypted e-mail message as an attachment -- if the outer message
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can be decrypted, but the attached part cannot, then both
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properties will be set on the message as a whole.
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If notmuch never tried to decrypt an encrypted message during
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indexing (which is the default, see ``index.decrypt`` in
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**notmuch-config(1)**), then this property will not be set on that
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message.
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**session-key**
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When **notmuch-show(1)** or **nomtuch-reply** encounters a message
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with an encrypted part, if notmuch finds a ``session-key``
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property associated with the message, it will try that stashed
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session key for decryption.
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If you do not want to use any stashed session keys that might be
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present, you should pass those programs ``--decrypt=false``.
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Using a stashed session key with "notmuch show" will speed up
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rendering of long encrypted threads. It also allows the user to
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destroy the secret part of any expired encryption-capable subkey
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while still being able to read any retained messages for which
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they have stashed the session key. This enables truly deletable
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e-mail, since (once the session key and asymmetric subkey are both
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destroyed) there are no keys left that can be used to decrypt any
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copy of the original message previously stored by an adversary.
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However, access to the stashed session key for an encrypted message
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permits full byte-for-byte reconstruction of the cleartext
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message. This includes attachments, cryptographic signatures, and
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other material that cannot be reconstructed from the index alone.
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See ``index.decrypt`` in **notmuch-config(1)** for more
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details about how to set notmuch's policy on when to store session
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keys.
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The session key should be in the ASCII text form produced by
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GnuPG. For OpenPGP, that consists of a decimal representation of
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the hash algorithm used (identified by number from RFC 4880,
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e.g. 9 means AES-256) followed by a colon, followed by a
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hexadecimal representation of the algorithm-specific key. For
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example, an AES-128 key might be stashed in a notmuch property as:
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``session-key=7:14B16AF65536C28AF209828DFE34C9E0``.
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SEE ALSO
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========
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**notmuch(1)**,
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**notmuch-config(1)**,
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**notmuch-dump(1)**,
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**notmuch-insert(1)**,
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**notmuch-new(1)**,
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**notmuch-reindex(1)**,
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**notmuch-reply(1)**,
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**notmuch-restore(1)**,
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**notmuch-show(1)**,
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***notmuch-search-terms(7)**
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