mirror of
https://git.notmuchmail.org/git/notmuch
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16a3103023
It was decided that auto-signing is potentially too troublesome for the apparently common case of users who enable crypto processing for the purpose of checking signature validity but who are not in a position to sign out-going messages. Users can still manually invoke signing as needed. Encrypting replies to encrypted messages is more of a security issue so we leave it in place.
402 lines
15 KiB
EmacsLisp
402 lines
15 KiB
EmacsLisp
;; notmuch-mua.el --- emacs style mail-user-agent
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;;
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;; Copyright © David Edmondson
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;;
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;; This file is part of Notmuch.
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;;
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;; Notmuch is free software: you can redistribute it and/or modify it
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;; under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;;
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;; Notmuch is distributed in the hope that it will be useful, but
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;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;; General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with Notmuch. If not, see <http://www.gnu.org/licenses/>.
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;;
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;; Authors: David Edmondson <dme@dme.org>
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(require 'message)
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(require 'mm-view)
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(require 'format-spec)
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(require 'notmuch-lib)
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(require 'notmuch-address)
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(eval-when-compile (require 'cl))
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(declare-function notmuch-show-insert-bodypart "notmuch-show" (msg part depth &optional hide))
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;;
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(defcustom notmuch-mua-send-hook '(notmuch-mua-message-send-hook)
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"Hook run before sending messages."
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:type 'hook
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:group 'notmuch-send
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:group 'notmuch-hooks)
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(defcustom notmuch-mua-compose-in 'current-window
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(concat
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"Where to create the mail buffer used to compose a new message.
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Possible values are `current-window' (default), `new-window' and
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`new-frame'. If set to `current-window', the mail buffer will be
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displayed in the current window, so the old buffer will be
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restored when the mail buffer is killed. If set to `new-window'
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or `new-frame', the mail buffer will be displayed in a new
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window/frame that will be destroyed when the buffer is killed.
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You may want to customize `message-kill-buffer-on-exit'
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accordingly."
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(when (< emacs-major-version 24)
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" Due to a known bug in Emacs 23, you should not set
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this to `new-window' if `message-kill-buffer-on-exit' is
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disabled: this would result in an incorrect behavior."))
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:group 'notmuch-send
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:type '(choice (const :tag "Compose in the current window" current-window)
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(const :tag "Compose mail in a new window" new-window)
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(const :tag "Compose mail in a new frame" new-frame)))
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(defcustom notmuch-mua-user-agent-function 'notmuch-mua-user-agent-full
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"Function used to generate a `User-Agent:' string. If this is
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`nil' then no `User-Agent:' will be generated."
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:type '(choice (const :tag "No user agent string" nil)
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(const :tag "Full" notmuch-mua-user-agent-full)
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(const :tag "Notmuch" notmuch-mua-user-agent-notmuch)
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(const :tag "Emacs" notmuch-mua-user-agent-emacs)
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(function :tag "Custom user agent function"
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:value notmuch-mua-user-agent-full))
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:group 'notmuch-send)
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(defcustom notmuch-mua-hidden-headers '("^User-Agent:")
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"Headers that are added to the `message-mode' hidden headers
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list."
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:type '(repeat string)
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:group 'notmuch-send)
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;;
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(defun notmuch-mua-get-switch-function ()
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"Get a switch function according to `notmuch-mua-compose-in'."
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(cond ((eq notmuch-mua-compose-in 'current-window)
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'switch-to-buffer)
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((eq notmuch-mua-compose-in 'new-window)
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'switch-to-buffer-other-window)
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((eq notmuch-mua-compose-in 'new-frame)
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'switch-to-buffer-other-frame)
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(t (error "Invalid value for `notmuch-mua-compose-in'"))))
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(defun notmuch-mua-maybe-set-window-dedicated ()
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"Set the selected window as dedicated according to
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`notmuch-mua-compose-in'."
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(when (or (eq notmuch-mua-compose-in 'new-frame)
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(eq notmuch-mua-compose-in 'new-window))
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(set-window-dedicated-p (selected-window) t)))
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(defun notmuch-mua-user-agent-full ()
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"Generate a `User-Agent:' string suitable for notmuch."
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(concat (notmuch-mua-user-agent-notmuch)
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" "
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(notmuch-mua-user-agent-emacs)))
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(defun notmuch-mua-user-agent-notmuch ()
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"Generate a `User-Agent:' string suitable for notmuch."
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(concat "Notmuch/" (notmuch-version) " (http://notmuchmail.org)"))
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(defun notmuch-mua-user-agent-emacs ()
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"Generate a `User-Agent:' string suitable for notmuch."
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(concat "Emacs/" emacs-version " (" system-configuration ")"))
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(defun notmuch-mua-add-more-hidden-headers ()
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"Add some headers to the list that are hidden by default."
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(mapc (lambda (header)
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(when (not (member header message-hidden-headers))
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(push header message-hidden-headers)))
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notmuch-mua-hidden-headers))
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(defun notmuch-mua-reply-crypto (parts)
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"Add mml sign-encrypt flag if any part of original message is encrypted."
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(loop for part in parts
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if (notmuch-match-content-type (plist-get part :content-type) "multipart/encrypted")
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do (mml-secure-message-sign-encrypt)
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else if (notmuch-match-content-type (plist-get part :content-type) "multipart/*")
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do (notmuch-mua-reply-crypto (plist-get part :content))))
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(defun notmuch-mua-get-quotable-parts (parts)
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(loop for part in parts
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if (notmuch-match-content-type (plist-get part :content-type) "multipart/alternative")
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collect (let* ((subparts (plist-get part :content))
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(types (mapcar (lambda (part) (plist-get part :content-type)) subparts))
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(chosen-type (car (notmuch-multipart/alternative-choose types))))
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(loop for part in (reverse subparts)
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if (notmuch-match-content-type (plist-get part :content-type) chosen-type)
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return part))
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else if (notmuch-match-content-type (plist-get part :content-type) "multipart/*")
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append (notmuch-mua-get-quotable-parts (plist-get part :content))
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else if (notmuch-match-content-type (plist-get part :content-type) "text/*")
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collect part))
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(defun notmuch-mua-insert-quotable-part (message part)
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;; We don't want text properties leaking from the show renderer into
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;; the reply so we use a temp buffer. Also we don't want hooks, such
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;; as notmuch-wash-*, to be run on the quotable part so we set
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;; notmuch-show-insert-text/plain-hook to nil.
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(insert (with-temp-buffer
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(let ((notmuch-show-insert-text/plain-hook nil))
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;; Show the part but do not add buttons.
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(notmuch-show-insert-bodypart message part 0 'no-buttons))
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(buffer-substring-no-properties (point-min) (point-max)))))
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;; There is a bug in emacs 23's message.el that results in a newline
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;; not being inserted after the References header, so the next header
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;; is concatenated to the end of it. This function fixes the problem,
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;; while guarding against the possibility that some current or future
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;; version of emacs has the bug fixed.
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(defun notmuch-mua-insert-references (original-func header references)
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(funcall original-func header references)
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(unless (bolp) (insert "\n")))
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(defun notmuch-mua-reply (query-string &optional sender reply-all)
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(let ((args '("reply" "--format=sexp" "--format-version=1"))
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(process-crypto notmuch-show-process-crypto)
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reply
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original)
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(when process-crypto
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(setq args (append args '("--decrypt"))))
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(if reply-all
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(setq args (append args '("--reply-to=all")))
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(setq args (append args '("--reply-to=sender"))))
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(setq args (append args (list query-string)))
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;; Get the reply object as SEXP, and parse it into an elisp object.
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(setq reply (apply #'notmuch-call-notmuch-sexp args))
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;; Extract the original message to simplify the following code.
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(setq original (plist-get reply :original))
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;; Extract the headers of both the reply and the original message.
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(let* ((original-headers (plist-get original :headers))
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(reply-headers (plist-get reply :reply-headers)))
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;; If sender is non-nil, set the From: header to its value.
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(when sender
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(plist-put reply-headers :From sender))
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(let
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;; Overlay the composition window on that being used to read
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;; the original message.
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((same-window-regexps '("\\*mail .*")))
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;; We modify message-header-format-alist to get around a bug in message.el.
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;; See the comment above on notmuch-mua-insert-references.
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(let ((message-header-format-alist
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(loop for pair in message-header-format-alist
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if (eq (car pair) 'References)
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collect (cons 'References
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(apply-partially
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'notmuch-mua-insert-references
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(cdr pair)))
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else
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collect pair)))
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(notmuch-mua-mail (plist-get reply-headers :To)
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(plist-get reply-headers :Subject)
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(notmuch-headers-plist-to-alist reply-headers)
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nil (notmuch-mua-get-switch-function))))
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;; Insert the message body - but put it in front of the signature
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;; if one is present, and after any other content
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;; message*setup-hooks may have added to the message body already.
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(save-restriction
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(message-goto-body)
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(narrow-to-region (point) (point-max))
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(goto-char (point-max))
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(if (re-search-backward message-signature-separator nil t)
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(if message-signature-insert-empty-line
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(forward-line -1))
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(goto-char (point-max))))
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(let ((from (plist-get original-headers :From))
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(date (plist-get original-headers :Date))
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(start (point)))
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;; message-cite-original constructs a citation line based on the From and Date
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;; headers of the original message, which are assumed to be in the buffer.
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(insert "From: " from "\n")
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(insert "Date: " date "\n\n")
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;; Get the parts of the original message that should be quoted; this includes
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;; all the text parts, except the non-preferred ones in a multipart/alternative.
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(let ((quotable-parts (notmuch-mua-get-quotable-parts (plist-get original :body))))
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(mapc (apply-partially 'notmuch-mua-insert-quotable-part original) quotable-parts))
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(set-mark (point))
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(goto-char start)
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;; Quote the original message according to the user's configured style.
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(message-cite-original)))
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;; Crypto processing based crypto content of the original message
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(when process-crypto
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(notmuch-mua-reply-crypto (plist-get original :body))))
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;; Push mark right before signature, if any.
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(message-goto-signature)
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(unless (eobp)
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(end-of-line -1))
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(push-mark)
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(message-goto-body)
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(set-buffer-modified-p nil))
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(defun notmuch-mua-mail (&optional to subject other-headers &rest other-args)
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"Invoke the notmuch mail composition window.
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OTHER-ARGS are passed through to `message-mail'."
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(interactive)
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(when notmuch-mua-user-agent-function
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(let ((user-agent (funcall notmuch-mua-user-agent-function)))
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(when (not (string= "" user-agent))
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(push (cons 'User-Agent user-agent) other-headers))))
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(unless (assq 'From other-headers)
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(push (cons 'From (concat
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(notmuch-user-name) " <" (notmuch-user-primary-email) ">")) other-headers))
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(apply #'message-mail to subject other-headers other-args)
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(message-sort-headers)
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(message-hide-headers)
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(set-buffer-modified-p nil)
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(notmuch-mua-maybe-set-window-dedicated)
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(message-goto-to))
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(defcustom notmuch-identities nil
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"Identities that can be used as the From: address when composing a new message.
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If this variable is left unset, then a list will be constructed from the
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name and addresses configured in the notmuch configuration file."
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:type '(repeat string)
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:group 'notmuch-send)
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(defcustom notmuch-always-prompt-for-sender nil
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"Always prompt for the From: address when composing or forwarding a message.
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This is not taken into account when replying to a message, because in that case
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the From: header is already filled in by notmuch."
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:type 'boolean
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:group 'notmuch-send)
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(defvar notmuch-mua-sender-history nil)
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;; Workaround: Running `ido-completing-read' in emacs 23.1, 23.2 and 23.3
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;; without some explicit initialization fill freeze the operation.
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;; Hence, we advice `ido-completing-read' to ensure required initialization
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;; is done.
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(if (and (= emacs-major-version 23) (< emacs-minor-version 4))
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(defadvice ido-completing-read (before notmuch-ido-mode-init activate)
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(ido-init-completion-maps)
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(add-hook 'minibuffer-setup-hook 'ido-minibuffer-setup)
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(add-hook 'choose-completion-string-functions
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'ido-choose-completion-string)
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(ad-disable-advice 'ido-completing-read 'before 'notmuch-ido-mode-init)
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(ad-activate 'ido-completing-read)))
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(defun notmuch-mua-prompt-for-sender ()
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"Prompt for a sender from the user's configured identities."
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(if notmuch-identities
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(ido-completing-read "Send mail from: " notmuch-identities
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nil nil nil 'notmuch-mua-sender-history
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(car notmuch-identities))
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(let* ((name (notmuch-user-name))
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(addrs (cons (notmuch-user-primary-email)
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(notmuch-user-other-email)))
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(address
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(ido-completing-read (concat "Sender address for " name ": ") addrs
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nil nil nil 'notmuch-mua-sender-history
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(car addrs))))
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(concat name " <" address ">"))))
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(put 'notmuch-mua-new-mail 'notmuch-prefix-doc "... and prompt for sender")
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(defun notmuch-mua-new-mail (&optional prompt-for-sender)
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"Compose new mail.
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If PROMPT-FOR-SENDER is non-nil, the user will be prompted for
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the From: address first."
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(interactive "P")
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(let ((other-headers
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(when (or prompt-for-sender notmuch-always-prompt-for-sender)
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(list (cons 'From (notmuch-mua-prompt-for-sender))))))
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(notmuch-mua-mail nil nil other-headers nil (notmuch-mua-get-switch-function))))
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(defun notmuch-mua-new-forward-message (&optional prompt-for-sender)
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"Invoke the notmuch message forwarding window.
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The current buffer must contain an RFC2822 message to forward.
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If PROMPT-FOR-SENDER is non-nil, the user will be prompted for
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the From: address first."
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(let* ((cur (current-buffer))
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(message-forward-decoded-p nil)
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(subject (message-make-forward-subject))
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(other-headers
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(when (or prompt-for-sender notmuch-always-prompt-for-sender)
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(list (cons 'From (notmuch-mua-prompt-for-sender))))))
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(notmuch-mua-mail nil subject other-headers nil (notmuch-mua-get-switch-function))
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(message-forward-make-body cur)
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;; `message-forward-make-body' shows the User-agent header. Hide
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;; it again.
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(message-hide-headers)))
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(defun notmuch-mua-new-reply (query-string &optional prompt-for-sender reply-all)
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"Compose a reply to the message identified by QUERY-STRING.
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If PROMPT-FOR-SENDER is non-nil, the user will be prompted for
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the From: address first. If REPLY-ALL is non-nil, the message
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will be addressed to all recipients of the source message."
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;; In current emacs (24.3) select-active-regions is set to t by
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;; default. The reply insertion code sets the region to the quoted
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;; message to make it easy to delete (kill-region or C-w). These two
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;; things combine to put the quoted message in the primary selection.
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;;
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;; This is not what the user wanted and is a privacy risk (accidental
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;; pasting of the quoted message). We can avoid some of the problems
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;; by let-binding select-active-regions to nil. This fixes if the
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;; primary selection was previously in a non-emacs window but not if
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;; it was in an emacs window. To avoid the problem in the latter case
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;; we deactivate mark.
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(let ((sender
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(when prompt-for-sender
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(notmuch-mua-prompt-for-sender)))
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(select-active-regions nil))
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(notmuch-mua-reply query-string sender reply-all)
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(deactivate-mark)))
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(defun notmuch-mua-send-and-exit (&optional arg)
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(interactive "P")
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(message-send-and-exit arg))
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(defun notmuch-mua-kill-buffer ()
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(interactive)
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(message-kill-buffer))
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(defun notmuch-mua-message-send-hook ()
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"The default function used for `notmuch-mua-send-hook', this
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simply runs the corresponding `message-mode' hook functions."
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(run-hooks 'message-send-hook))
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;;
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(define-mail-user-agent 'notmuch-user-agent
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'notmuch-mua-mail 'notmuch-mua-send-and-exit
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'notmuch-mua-kill-buffer 'notmuch-mua-send-hook)
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;; Add some more headers to the list that `message-mode' hides when
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;; composing a message.
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(notmuch-mua-add-more-hidden-headers)
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;;
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(provide 'notmuch-mua)
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