1 (require 'riece-message)
2 (require 'riece-identity)
4 (autoload 'epg-make-context "epg")
5 (autoload 'epg-decrypt-string "epg")
6 (autoload 'epg-encrypt-string "epg")
7 (autoload 'epg-passphrase-callback-function "epg")
8 (autoload 'epg-context-set-passphrase-callback "epg")
11 (autoload 'riece-command-send-message "riece-commands"))
13 (defgroup riece-epg nil
14 "Encrypt/decrypt messages."
17 (defconst riece-epg-description
18 "Encrypt/decrypt messages.")
20 (defvar riece-epg-passphrase-alist nil)
22 (defun riece-epg-passphrase-callback-function (key-id identity)
24 (let ((entry (assoc identity riece-epg-passphrase-alist))
26 (or (copy-sequence (cdr entry))
29 (setq entry (list identity)
30 riece-epg-passphrase-alist (cons entry
31 riece-epg-passphrase-alist)))
32 (setq passphrase (epg-passphrase-callback-function key-id nil))
33 (setcdr entry (copy-sequence passphrase))
35 (epg-passphrase-callback-function key-id nil)))
37 (defun riece-command-enter-encrypted-message ()
38 "Encrypt the current line send send it to the current channel."
40 (let ((context (epg-make-context))
41 (string (buffer-substring
42 (riece-line-beginning-position)
43 (riece-line-end-position)))
45 (riece-with-server-buffer (riece-identity-server riece-current-channel)
46 (setq string (riece-encode-coding-string-for-identity
48 riece-current-channel)))
49 (epg-context-set-passphrase-callback
51 (cons #'riece-epg-passphrase-callback-function
52 riece-current-channel))
54 (setq string (epg-encrypt-string context string nil))
56 (if (setq entry (assoc riece-current-channel
57 riece-epg-passphrase-alist))
59 (signal (car error) (cdr error))))
60 (riece-command-send-message
61 (concat "[OpenPGP Encrypted:" (base64-encode-string string t) "]")
63 (let ((next-line-add-newlines t))
66 (defun riece-epg-message-filter (message)
67 (if (get 'riece-epg 'riece-addon-enabled)
68 (when (string-match "\\`\\[OpenPGP Encrypted:\\(.*\\)]"
69 (riece-message-text message))
70 (let ((context (epg-make-context))
71 (string (match-string 1 (riece-message-text message)))
72 (coding-system (or (riece-coding-system-for-identity
73 (riece-message-target message))
74 riece-default-coding-system))
76 (epg-context-set-passphrase-callback
78 (cons #'riece-epg-passphrase-callback-function
79 (riece-message-target message)))
81 (setq string (epg-decrypt-string context
82 (base64-decode-string string)))
84 (if (setq entry (assoc (riece-message-target message)
85 riece-epg-passphrase-alist))
87 (message "%s" (cdr error))))
88 (riece-message-set-text
90 (decode-coding-string string
91 (if (consp coding-system)
96 (defun riece-epg-insinuate ()
97 (add-hook 'riece-message-filter-functions 'riece-epg-message-filter))
99 (defun riece-epg-uninstall ()
100 (remove-hook 'riece-message-filter-functions 'riece-epg-message-filter))
102 (defvar riece-command-mode-map)
103 (defun riece-epg-enable ()
104 (define-key riece-command-mode-map
105 "\C-ce" 'riece-command-enter-encrypted-message))
107 (defun riece-epg-disable ()
108 (define-key riece-command-mode-map
113 ;;; riece-epg.el ends here