From c8919778ece08523e04a4750218550e522525403 Mon Sep 17 00:00:00 2001 From: ueno Date: Wed, 26 Apr 2006 02:52:17 +0000 Subject: [PATCH] * riece-epg.el (riece-epg-passphrase-callback-function-for-decrypt): New function. (riece-command-set-passphrase): Renamed. (riece-epg-message-filter): Don't query passphrase; if decryption fails add button to try again. (riece-epg-add-encrypted-button): New function. (riece-epg-encrypted-button-notify): New function. --- lisp/ChangeLog | 11 ++++++ lisp/riece-epg.el | 98 +++++++++++++++++++++++++++++++++++++++++------------ 2 files changed, 88 insertions(+), 21 deletions(-) diff --git a/lisp/ChangeLog b/lisp/ChangeLog index d0b1cbb..5646dd3 100644 --- a/lisp/ChangeLog +++ b/lisp/ChangeLog @@ -1,3 +1,14 @@ +2006-04-26 Daiki Ueno + + * riece-epg.el + (riece-epg-passphrase-callback-function-for-decrypt): New + function. + (riece-command-set-passphrase): Renamed. + (riece-epg-message-filter): Don't query passphrase; if decryption + fails add button to try again. + (riece-epg-add-encrypted-button): New function. + (riece-epg-encrypted-button-notify): New function. + 2006-04-25 Daiki Ueno * riece-epg.el: New add-on. diff --git a/lisp/riece-epg.el b/lisp/riece-epg.el index f9ea17b..b999eeb 100644 --- a/lisp/riece-epg.el +++ b/lisp/riece-epg.el @@ -59,6 +59,15 @@ passphrase))) (epg-passphrase-callback-function key-id nil))) +(defun riece-epg-passphrase-callback-function-for-decrypt (key-id identity) + (if (eq key-id 'SYM) + (let ((entry (riece-identity-assoc identity riece-epg-passphrase-alist)) + passphrase) + (if (cdr entry) + (copy-sequence (cdr entry)) + (epg-cancel epg-context))) + (epg-passphrase-callback-function key-id nil))) + (defun riece-epg-funcall-clear-passphrase (identity function &rest args) (condition-case error (apply function args) @@ -94,8 +103,8 @@ (let ((next-line-add-newlines t)) (next-line 1)))) -(defun riece-command-change-passphrase (identity passphrase) - "Change PASSPHRASE associated with IDENTITY." +(defun riece-command-set-passphrase (identity passphrase) + "Set PASSPHRASE associated with IDENTITY." (interactive (let ((identity (riece-completing-read-identity @@ -116,52 +125,99 @@ (cons (cons identity passphrase) riece-epg-passphrase-alist)))))) +(defun riece-epg-decrypt-string-for-identity (context cipher target) + (let ((coding-system + (or (riece-coding-system-for-identity target) + riece-default-coding-system))) + (riece-with-server-buffer (riece-identity-server target) + (decode-coding-string + (riece-epg-funcall-clear-passphrase + target + #'epg-decrypt-string + context + (base64-decode-string cipher)) + (if (consp coding-system) + (car coding-system) + coding-system))))) + (defun riece-epg-message-filter (message) (if (get 'riece-epg 'riece-addon-enabled) (when (string-match "\\`\\[encrypted:\\(.*\\)]" (riece-message-text message)) (let ((context (epg-make-context)) (string (match-string 1 (riece-message-text message))) - (coding-system (or (riece-coding-system-for-identity - (riece-message-target message)) - riece-default-coding-system)) entry) (epg-context-set-passphrase-callback context - (cons #'riece-epg-passphrase-callback-function - (riece-message-target message))) + (cons #'riece-epg-passphrase-callback-function-for-decrypt + riece-current-channel)) (condition-case error (progn - (setq string (base64-decode-string string)) (riece-message-set-text message (concat "[decrypted:" - (riece-with-server-buffer - (riece-identity-server (riece-message-target message)) - (decode-coding-string - (riece-epg-funcall-clear-passphrase - (riece-message-target message) - #'epg-decrypt-string context string) - (if (consp coding-system) - (car coding-system) - coding-system))) + (riece-epg-decrypt-string-for-identity + context string (riece-message-target message)) "]"))) - (error (message "%s" (cdr error))))))) + (error + (riece-put-text-property-nonsticky + 0 (length (riece-message-text message)) + 'riece-epg-encryption-target (riece-message-target message) + (riece-message-text message)) + (message "%s" (cdr error))))))) message) +(defun riece-epg-add-encrypted-button (start end) + (if (and (get 'riece-button 'riece-addon-enabled) + (get 'riece-epg 'riece-addon-enabled)) + (riece-scan-property-region + 'riece-epg-encryption-target + start end + (lambda (start end) + (let ((inhibit-read-only t) + buffer-read-only) + (widget-convert-button + 'link start end + :help-echo "Click to decrypt" + :notify #'riece-epg-encrypted-button-notify + (get-text-property start 'riece-epg-encryption-target))))))) + +(defun riece-epg-encrypted-button-notify (widget &rest ignore) + (let* ((from (marker-position (widget-get widget :from))) + (to (marker-position (widget-get widget :to))) + (target (widget-get widget :value)) + (cipher (buffer-substring from to)) + (inhibit-read-only t) + buffer-read-only + plain) + (when (string-match "\\`\\[encrypted:\\(.*\\)]" cipher) + (setq plain (riece-epg-decrypt-string-for-identity + (epg-make-context) (match-string 1 cipher) target)) + (widget-delete widget) + (delete-region from to) + (save-excursion + (goto-char from) + (insert "[decrypted:" plain "]"))))) + +(defun riece-epg-requires () + (if (memq 'riece-button riece-addons) + '(riece-button))) + (defun riece-epg-insinuate () - (add-hook 'riece-message-filter-functions 'riece-epg-message-filter)) + (add-hook 'riece-message-filter-functions 'riece-epg-message-filter) + (add-hook 'riece-after-insert-functions 'riece-epg-add-encrypted-button)) (defun riece-epg-uninstall () - (remove-hook 'riece-message-filter-functions 'riece-epg-message-filter)) + (remove-hook 'riece-message-filter-functions 'riece-epg-message-filter) + (remove-hook 'riece-after-insert-functions 'riece-epg-add-encrypted-button)) (defvar riece-command-mode-map) (defun riece-epg-enable () (define-key riece-command-mode-map "\C-ce" 'riece-command-enter-encrypted-message) (define-key riece-command-mode-map - "\C-c\C-ec" 'riece-command-change-passphrase)) + "\C-c\C-ec" 'riece-command-set-passphrase)) (defun riece-epg-disable () (define-key riece-command-mode-map -- 1.7.10.4