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bug#39964: [PATCH] Add support for creating OpenPGP header
From: |
Philip K |
Subject: |
bug#39964: [PATCH] Add support for creating OpenPGP header |
Date: |
Sat, 7 Mar 2020 01:11:28 +0100 |
From: Philip K <philip.kaludercic@fau.de>
See [0] for more details on it's usage and interpretation.
[0]: https://tools.ietf.org/html/draft-josefsson-openpgp-mailnews-header
---
lisp/gnus/message.el | 57 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 57 insertions(+)
diff --git a/lisp/gnus/message.el b/lisp/gnus/message.el
index adefa0efd6..1c9c99afbe 100644
--- a/lisp/gnus/message.el
+++ b/lisp/gnus/message.el
@@ -2730,6 +2730,63 @@ message-sign-encrypt-if-all-keys-available
(when (message-all-epg-keys-available-p)
(mml-secure-message-sign-encrypt)))
+(defcustom message-openpgp-header nil
+ "Specification for \"OpenPGP\" header.
+
+Otherwise, the variable must be a
+list with three elements, all strings:
+- Key ID, in hexadecimal form
+- Key URL or ASCII armoured key.
+- Protection preference, one of: \"unprotected\", \"sign\",
+ \"encrypt\" or \"signencrypt\".
+
+Each value may be nil, in which case it won't be inserted. If all
+the values are nil, or `message-openpgp-header' is nil itself,
+don't insert any header."
+ :type '(choice
+ (const nil :tag "Don't add OpenPGP header")
+ (list (choice (string :tag "ID")
+ (const nil :tag "No ID"))
+ (choice (string :tag "Key")
+ (const nil :tag "No Key"))
+ (choice (other nil :tag "None")
+ (const "unprotected" :tag "Unprotected")
+ (const "sign" :tag "Sign")
+ (const "encrypt" :tag "Encrypt")
+ (const "signencrypt" :tag "Sign and Encrypt")))))
+
+(defun messasge-add-openpgp-header ()
+ "Add OpenPGP header to point to public key.
+
+Header will be constructed as specified in `message-openpgp-header'.
+
+Consider adding this function to `message-send-hook'."
+ ;; See https://tools.ietf.org/html/draft-josefsson-openpgp-mailnews-header
+ (when (and message-openpgp-header
+ (or (nth 0 message-openpgp-header)
+ (nth 1 message-openpgp-header)
+ (nth 2 message-openpgp-header)))
+ (with-temp-buffer
+ (insert "OpenPGP: ")
+ ;; add ID
+ (let (need-sep)
+ (when (nth 0 message-openpgp-header)
+ (insert "id=" (nth 0 message-openpgp-header))
+ (setq need-sep t))
+ ;; add URL
+ (when (nth 1 message-openpgp-header)
+ (when need-sep (insert "; "))
+ (if (string-match-p ";")
+ (insert "url=\"" (nth 1 message-openpgp-header) "\"")
+ (insert "url=\"" (nth 1 message-openpgp-header) "\""))
+ (setq need-sep t))
+ ;; add preference
+ (when (nth 2 message-openpgp-header)
+ (when need-sep (insert "; "))
+ (insert "preference=" (nth 2 message-openpgp-header))))
+ ;; insert header
+ (message-add-header (buffer-string)))))
+
;;;
--
2.20.1
- bug#39964: [PATCH] Add support for creating OpenPGP header,
Philip K <=