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1 | ;;; pgg.el --- glue for the various PGP implementations. |
2 | ||
e84b4b86 | 3 | ;; Copyright (C) 1999, 2000, 2002, 2003, 2004, |
aaef169d | 4 | ;; 2005, 2006 Free Software Foundation, Inc. |
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5 | |
6 | ;; Author: Daiki Ueno <ueno@unixuser.org> | |
7c700bd1 | 7 | ;; Symmetric encryption added by: Sascha Wilde <wilde@sha-bang.de> |
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8 | ;; Created: 1999/10/28 |
9 | ;; Keywords: PGP | |
10 | ||
11 | ;; This file is part of GNU Emacs. | |
12 | ||
13 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
14 | ;; it under the terms of the GNU General Public License as published by | |
15 | ;; the Free Software Foundation; either version 2, or (at your option) | |
16 | ;; any later version. | |
17 | ||
18 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
19 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | ;; GNU General Public License for more details. | |
22 | ||
23 | ;; You should have received a copy of the GNU General Public License | |
24 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
3a35cf56 LK |
25 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
26 | ;; Boston, MA 02110-1301, USA. | |
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27 | |
28 | ;;; Commentary: | |
29 | ||
30 | ;;; Code: | |
31 | ||
32 | (require 'pgg-def) | |
33 | (require 'pgg-parse) | |
34 | (autoload 'run-at-time "timer") | |
35 | ||
36 | ;; Don't merge these two `eval-when-compile's. | |
37 | (eval-when-compile | |
38 | (require 'cl)) | |
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39 | |
40 | ;;; @ utility functions | |
41 | ;;; | |
42 | ||
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43 | (defun pgg-invoke (func scheme &rest args) |
44 | (progn | |
45 | (require (intern (format "pgg-%s" scheme))) | |
46 | (apply 'funcall (intern (format "pgg-%s-%s" scheme func)) args))) | |
47 | ||
48 | (put 'pgg-save-coding-system 'lisp-indent-function 2) | |
49 | ||
50 | (defmacro pgg-save-coding-system (start end &rest body) | |
51 | `(if (interactive-p) | |
52 | (let ((buffer (current-buffer))) | |
53 | (with-temp-buffer | |
54 | (let (buffer-undo-list) | |
55 | (insert-buffer-substring buffer ,start ,end) | |
56 | (encode-coding-region (point-min)(point-max) | |
57 | buffer-file-coding-system) | |
58 | (prog1 (save-excursion ,@body) | |
59 | (push nil buffer-undo-list) | |
60 | (ignore-errors (undo)))))) | |
61 | (save-restriction | |
62 | (narrow-to-region ,start ,end) | |
63 | ,@body))) | |
64 | ||
65 | (defun pgg-temp-buffer-show-function (buffer) | |
66 | (let ((window (or (get-buffer-window buffer 'visible) | |
67 | (split-window-vertically)))) | |
68 | (set-window-buffer window buffer) | |
69 | (shrink-window-if-larger-than-buffer window))) | |
70 | ||
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71 | ;; XXX `pgg-display-output-buffer' is a horrible name for this function. |
72 | ;; It should be something like `pgg-situate-output-or-display-error'. | |
23f87bed | 73 | (defun pgg-display-output-buffer (start end status) |
7c700bd1 EZ |
74 | "Situate en/decryption results or pop up an error buffer. |
75 | ||
76 | Text from START to END is replaced by contents of output buffer if STATUS | |
77 | is true, or else the output buffer is displayed." | |
23f87bed | 78 | (if status |
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79 | (pgg-situate-output start end) |
80 | (pgg-display-error-buffer))) | |
81 | ||
82 | (defun pgg-situate-output (start end) | |
83 | "Place en/decryption result in place of current text from START to END." | |
84 | (delete-region start end) | |
85 | (insert-buffer-substring pgg-output-buffer) | |
86 | (decode-coding-region start (point) buffer-file-coding-system)) | |
87 | ||
88 | (defun pgg-display-error-buffer () | |
89 | "Pop up an error buffer indicating the reason for an en/decryption failure." | |
90 | (let ((temp-buffer-show-function | |
91 | (function pgg-temp-buffer-show-function))) | |
92 | (with-output-to-temp-buffer pgg-echo-buffer | |
93 | (set-buffer standard-output) | |
94 | (insert-buffer-substring pgg-errors-buffer)))) | |
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95 | |
96 | (defvar pgg-passphrase-cache (make-vector 7 0)) | |
97 | ||
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98 | (defvar pgg-pending-timers (make-vector 7 0) |
99 | "Hash table for managing scheduled pgg cache management timers. | |
100 | ||
101 | We associate key and timer, so the timer can be cancelled if a new | |
102 | timeout for the key is set while an old one is still pending.") | |
103 | ||
104 | (defun pgg-read-passphrase (prompt &optional key notruncate) | |
105 | "Using PROMPT, obtain passphrase for KEY from cache or user. | |
106 | ||
107 | Truncate the key to 8 trailing characters unless NOTRUNCATE is true | |
108 | \(default false). | |
109 | ||
110 | Custom variables `pgg-cache-passphrase' and `pgg-passphrase-cache-expiry' | |
111 | regulate cache behavior." | |
112 | (or (pgg-read-passphrase-from-cache key notruncate) | |
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113 | (read-passwd prompt))) |
114 | ||
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115 | (defun pgg-read-passphrase-from-cache (key &optional notruncate) |
116 | "Obtain passphrase for KEY from time-limited passphrase cache. | |
117 | ||
118 | Truncate the key to 8 trailing characters unless NOTRUNCATE is true | |
119 | \(default false). | |
120 | ||
121 | Custom variables `pgg-cache-passphrase' and `pgg-passphrase-cache-expiry' | |
122 | regulate cache behavior." | |
123 | (and pgg-cache-passphrase | |
124 | key (or notruncate | |
125 | (setq key (pgg-truncate-key-identifier key))) | |
126 | (symbol-value (intern-soft key pgg-passphrase-cache)))) | |
127 | ||
128 | (defun pgg-add-passphrase-to-cache (key passphrase &optional notruncate) | |
129 | "Associate KEY with PASSPHRASE in time-limited passphrase cache. | |
130 | ||
131 | Truncate the key to 8 trailing characters unless NOTRUNCATE is true | |
132 | \(default false). | |
133 | ||
134 | Custom variables `pgg-cache-passphrase' and `pgg-passphrase-cache-expiry' | |
135 | regulate cache behavior." | |
136 | ||
137 | (let* ((key (if notruncate key (pgg-truncate-key-identifier key))) | |
138 | (interned-timer-key (intern-soft key pgg-pending-timers)) | |
139 | (old-timer (symbol-value interned-timer-key)) | |
140 | new-timer) | |
141 | (when old-timer | |
142 | (cancel-timer old-timer) | |
143 | (unintern interned-timer-key pgg-pending-timers)) | |
144 | (set (intern key pgg-passphrase-cache) | |
145 | passphrase) | |
146 | (set (intern key pgg-pending-timers) | |
147 | (pgg-run-at-time pgg-passphrase-cache-expiry nil | |
148 | #'pgg-remove-passphrase-from-cache | |
149 | key notruncate)))) | |
150 | ||
151 | (defun pgg-remove-passphrase-from-cache (key &optional notruncate) | |
152 | "Omit passphrase associated with KEY in time-limited passphrase cache. | |
153 | ||
154 | Truncate the key to 8 trailing characters unless NOTRUNCATE is true | |
155 | \(default false). | |
156 | ||
157 | This is a no-op if there is not entry for KEY (eg, it's already expired. | |
158 | ||
159 | The memory for the passphrase is filled with underscores to clear any | |
160 | references to it. | |
161 | ||
162 | Custom variables `pgg-cache-passphrase' and `pgg-passphrase-cache-expiry' | |
163 | regulate cache behavior." | |
164 | (let* ((passphrase (pgg-read-passphrase-from-cache key notruncate)) | |
165 | (key (if notruncate key (pgg-truncate-key-identifier key))) | |
166 | (interned-timer-key (intern-soft key pgg-pending-timers)) | |
167 | (old-timer (symbol-value interned-timer-key))) | |
168 | (when passphrase | |
169 | (fillarray passphrase ?_) | |
170 | (unintern key pgg-passphrase-cache)) | |
171 | (when old-timer | |
172 | (pgg-cancel-timer old-timer) | |
173 | (unintern interned-timer-key pgg-pending-timers)))) | |
174 | ||
23f87bed | 175 | (eval-when-compile |
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176 | (defmacro pgg-run-at-time-1 (time repeat function args) |
177 | (when (featurep 'xemacs) | |
178 | (if (condition-case nil | |
179 | (let ((delete-itimer 'delete-itimer) | |
180 | (itimer-driver-start 'itimer-driver-start) | |
181 | (itimer-value 'itimer-value) | |
182 | (start-itimer 'start-itimer)) | |
183 | (unless (or (symbol-value 'itimer-process) | |
184 | (symbol-value 'itimer-timer)) | |
185 | (funcall itimer-driver-start)) | |
186 | ;; Check whether there is a bug to which the difference of | |
187 | ;; the present time and the time when the itimer driver was | |
188 | ;; woken up is subtracted from the initial itimer value. | |
189 | (let* ((inhibit-quit t) | |
190 | (ctime (current-time)) | |
191 | (itimer-timer-last-wakeup | |
192 | (prog1 | |
193 | ctime | |
194 | (setcar ctime (1- (car ctime))))) | |
195 | (itimer-list nil) | |
196 | (itimer (funcall start-itimer "pgg-run-at-time" | |
197 | 'ignore 5))) | |
198 | (sleep-for 0.1) ;; Accept the timeout interrupt. | |
199 | (prog1 | |
200 | (> (funcall itimer-value itimer) 0) | |
201 | (funcall delete-itimer itimer)))) | |
202 | (error nil)) | |
203 | `(let ((time ,time)) | |
204 | (apply #'start-itimer "pgg-run-at-time" | |
205 | ,function (if time (max time 1e-9) 1e-9) | |
206 | ,repeat nil t ,args))) | |
207 | `(let ((time ,time) | |
208 | (itimers (list nil))) | |
209 | (setcar | |
210 | itimers | |
211 | (apply #'start-itimer "pgg-run-at-time" | |
212 | (lambda (itimers repeat function &rest args) | |
213 | (let ((itimer (car itimers))) | |
214 | (if repeat | |
215 | (progn | |
216 | (set-itimer-function | |
217 | itimer | |
218 | (lambda (itimer repeat function &rest args) | |
219 | (set-itimer-restart itimer repeat) | |
220 | (set-itimer-function itimer function) | |
221 | (set-itimer-function-arguments itimer args) | |
222 | (apply function args))) | |
223 | (set-itimer-function-arguments | |
224 | itimer | |
225 | (append (list itimer repeat function) args))) | |
226 | (set-itimer-function | |
227 | itimer | |
228 | (lambda (itimer function &rest args) | |
229 | (delete-itimer itimer) | |
230 | (apply function args))) | |
231 | (set-itimer-function-arguments | |
232 | itimer | |
233 | (append (list itimer function) args))))) | |
234 | 1e-9 (if time (max time 1e-9) 1e-9) | |
235 | nil t itimers ,repeat ,function ,args)))))) | |
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236 | |
237 | (eval-and-compile | |
4a43ee9b | 238 | (if (featurep 'xemacs) |
7c700bd1 EZ |
239 | (progn |
240 | (defun pgg-run-at-time (time repeat function &rest args) | |
241 | "Emulating function run as `run-at-time'. | |
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242 | TIME should be nil meaning now, or a number of seconds from now. |
243 | Return an itimer object which can be used in either `delete-itimer' | |
244 | or `cancel-timer'." | |
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245 | (pgg-run-at-time-1 time repeat function args)) |
246 | (defun pgg-cancel-timer (timer) | |
247 | "Emulate cancel-timer for xemacs." | |
248 | (let ((delete-itimer 'delete-itimer)) | |
249 | (funcall delete-itimer timer))) | |
250 | ) | |
251 | (defalias 'pgg-run-at-time 'run-at-time) | |
252 | (defalias 'pgg-cancel-timer 'cancel-timer))) | |
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253 | |
254 | (defmacro pgg-convert-lbt-region (start end lbt) | |
255 | `(let ((pgg-conversion-end (set-marker (make-marker) ,end))) | |
256 | (goto-char ,start) | |
257 | (case ,lbt | |
258 | (CRLF | |
259 | (while (progn | |
260 | (end-of-line) | |
261 | (> (marker-position pgg-conversion-end) (point))) | |
262 | (insert "\r") | |
263 | (forward-line 1))) | |
264 | (LF | |
265 | (while (re-search-forward "\r$" pgg-conversion-end t) | |
266 | (replace-match "")))))) | |
267 | ||
268 | (put 'pgg-as-lbt 'lisp-indent-function 3) | |
269 | ||
270 | (defmacro pgg-as-lbt (start end lbt &rest body) | |
271 | `(let ((inhibit-read-only t) | |
272 | buffer-read-only | |
273 | buffer-undo-list) | |
274 | (pgg-convert-lbt-region ,start ,end ,lbt) | |
275 | (let ((,end (point))) | |
276 | ,@body) | |
277 | (push nil buffer-undo-list) | |
278 | (ignore-errors (undo)))) | |
279 | ||
280 | (put 'pgg-process-when-success 'lisp-indent-function 0) | |
281 | ||
282 | (defmacro pgg-process-when-success (&rest body) | |
283 | `(with-current-buffer pgg-output-buffer | |
284 | (if (zerop (buffer-size)) nil ,@body t))) | |
285 | ||
286 | (defalias 'pgg-make-temp-file | |
287 | (if (fboundp 'make-temp-file) | |
288 | 'make-temp-file | |
289 | (lambda (prefix &optional dir-flag) | |
290 | (let ((file (expand-file-name | |
291 | (make-temp-name prefix) | |
292 | (if (fboundp 'temp-directory) | |
293 | (temp-directory) | |
294 | temporary-file-directory)))) | |
295 | (if dir-flag | |
296 | (make-directory file)) | |
297 | file)))) | |
298 | ||
299 | ;;; @ interface functions | |
300 | ;;; | |
301 | ||
302 | ;;;###autoload | |
7c700bd1 | 303 | (defun pgg-encrypt-region (start end rcpts &optional sign passphrase) |
23f87bed | 304 | "Encrypt the current region between START and END for RCPTS. |
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305 | |
306 | If optional argument SIGN is non-nil, do a combined sign and encrypt. | |
307 | ||
308 | If optional PASSPHRASE is not specified, it will be obtained from the | |
309 | passphrase cache or user." | |
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310 | (interactive |
311 | (list (region-beginning)(region-end) | |
312 | (split-string (read-string "Recipients: ") "[ \t,]+"))) | |
313 | (let ((status | |
314 | (pgg-save-coding-system start end | |
315 | (pgg-invoke "encrypt-region" (or pgg-scheme pgg-default-scheme) | |
7c700bd1 EZ |
316 | (point-min) (point-max) rcpts sign passphrase)))) |
317 | (when (interactive-p) | |
318 | (pgg-display-output-buffer start end status)) | |
319 | status)) | |
320 | ||
321 | ;;;###autoload | |
322 | (defun pgg-encrypt-symmetric-region (start end &optional passphrase) | |
323 | "Encrypt the current region between START and END symmetric with passphrase. | |
324 | ||
325 | If optional PASSPHRASE is not specified, it will be obtained from the | |
326 | cache or user." | |
327 | (interactive "r") | |
328 | (let ((status | |
329 | (pgg-save-coding-system start end | |
330 | (pgg-invoke "encrypt-symmetric-region" | |
331 | (or pgg-scheme pgg-default-scheme) | |
332 | (point-min) (point-max) passphrase)))) | |
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333 | (when (interactive-p) |
334 | (pgg-display-output-buffer start end status)) | |
335 | status)) | |
336 | ||
337 | ;;;###autoload | |
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338 | (defun pgg-encrypt-symmetric (&optional start end passphrase) |
339 | "Encrypt the current buffer using a symmetric, rather than key-pair, cipher. | |
340 | ||
341 | If optional arguments START and END are specified, only encrypt within | |
342 | the region. | |
343 | ||
344 | If optional PASSPHRASE is not specified, it will be obtained from the | |
345 | passphrase cache or user." | |
346 | (interactive) | |
347 | (let* ((start (or start (point-min))) | |
348 | (end (or end (point-max))) | |
349 | (status (pgg-encrypt-symmetric-region start end passphrase))) | |
350 | (when (interactive-p) | |
351 | (pgg-display-output-buffer start end status)) | |
352 | status)) | |
353 | ||
354 | ;;;###autoload | |
355 | (defun pgg-encrypt (rcpts &optional sign start end passphrase) | |
23f87bed | 356 | "Encrypt the current buffer for RCPTS. |
7c700bd1 | 357 | |
23f87bed | 358 | If optional argument SIGN is non-nil, do a combined sign and encrypt. |
7c700bd1 | 359 | |
23f87bed | 360 | If optional arguments START and END are specified, only encrypt within |
7c700bd1 EZ |
361 | the region. |
362 | ||
363 | If optional PASSPHRASE is not specified, it will be obtained from the | |
364 | passphrase cache or user." | |
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365 | (interactive (list (split-string (read-string "Recipients: ") "[ \t,]+"))) |
366 | (let* ((start (or start (point-min))) | |
367 | (end (or end (point-max))) | |
7c700bd1 | 368 | (status (pgg-encrypt-region start end rcpts sign passphrase))) |
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369 | (when (interactive-p) |
370 | (pgg-display-output-buffer start end status)) | |
371 | status)) | |
372 | ||
373 | ;;;###autoload | |
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374 | (defun pgg-decrypt-region (start end &optional passphrase) |
375 | "Decrypt the current region between START and END. | |
376 | ||
377 | If optional PASSPHRASE is not specified, it will be obtained from the | |
378 | passphrase cache or user." | |
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379 | (interactive "r") |
380 | (let* ((buf (current-buffer)) | |
381 | (status | |
382 | (pgg-save-coding-system start end | |
383 | (pgg-invoke "decrypt-region" (or pgg-scheme pgg-default-scheme) | |
7c700bd1 | 384 | (point-min) (point-max) passphrase)))) |
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385 | (when (interactive-p) |
386 | (pgg-display-output-buffer start end status)) | |
387 | status)) | |
388 | ||
389 | ;;;###autoload | |
7c700bd1 | 390 | (defun pgg-decrypt (&optional start end passphrase) |
23f87bed | 391 | "Decrypt the current buffer. |
7c700bd1 | 392 | |
23f87bed | 393 | If optional arguments START and END are specified, only decrypt within |
7c700bd1 EZ |
394 | the region. |
395 | ||
396 | If optional PASSPHRASE is not specified, it will be obtained from the | |
397 | passphrase cache or user." | |
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398 | (interactive "") |
399 | (let* ((start (or start (point-min))) | |
400 | (end (or end (point-max))) | |
7c700bd1 | 401 | (status (pgg-decrypt-region start end passphrase))) |
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402 | (when (interactive-p) |
403 | (pgg-display-output-buffer start end status)) | |
404 | status)) | |
405 | ||
406 | ;;;###autoload | |
7c700bd1 | 407 | (defun pgg-sign-region (start end &optional cleartext passphrase) |
23f87bed | 408 | "Make the signature from text between START and END. |
7c700bd1 | 409 | |
23f87bed MB |
410 | If the optional 3rd argument CLEARTEXT is non-nil, it does not create |
411 | a detached signature. | |
7c700bd1 | 412 | |
23f87bed | 413 | If this function is called interactively, CLEARTEXT is enabled |
7c700bd1 EZ |
414 | and the the output is displayed. |
415 | ||
416 | If optional PASSPHRASE is not specified, it will be obtained from the | |
417 | passphrase cache or user." | |
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418 | (interactive "r") |
419 | (let ((status (pgg-save-coding-system start end | |
420 | (pgg-invoke "sign-region" (or pgg-scheme pgg-default-scheme) | |
421 | (point-min) (point-max) | |
7c700bd1 EZ |
422 | (or (interactive-p) cleartext) |
423 | passphrase)))) | |
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424 | (when (interactive-p) |
425 | (pgg-display-output-buffer start end status)) | |
426 | status)) | |
427 | ||
428 | ;;;###autoload | |
7c700bd1 | 429 | (defun pgg-sign (&optional cleartext start end passphrase) |
23f87bed | 430 | "Sign the current buffer. |
7c700bd1 | 431 | |
23f87bed MB |
432 | If the optional argument CLEARTEXT is non-nil, it does not create a |
433 | detached signature. | |
7c700bd1 | 434 | |
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435 | If optional arguments START and END are specified, only sign data |
436 | within the region. | |
7c700bd1 | 437 | |
23f87bed | 438 | If this function is called interactively, CLEARTEXT is enabled |
7c700bd1 EZ |
439 | and the the output is displayed. |
440 | ||
441 | If optional PASSPHRASE is not specified, it will be obtained from the | |
442 | passphrase cache or user." | |
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443 | (interactive "") |
444 | (let* ((start (or start (point-min))) | |
445 | (end (or end (point-max))) | |
7c700bd1 EZ |
446 | (status (pgg-sign-region start end |
447 | (or (interactive-p) cleartext) | |
448 | passphrase))) | |
23f87bed MB |
449 | (when (interactive-p) |
450 | (pgg-display-output-buffer start end status)) | |
451 | status)) | |
7c700bd1 | 452 | |
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453 | ;;;###autoload |
454 | (defun pgg-verify-region (start end &optional signature fetch) | |
455 | "Verify the current region between START and END. | |
456 | If the optional 3rd argument SIGNATURE is non-nil, it is treated as | |
457 | the detached signature of the current region. | |
458 | ||
459 | If the optional 4th argument FETCH is non-nil, we attempt to fetch the | |
460 | signer's public key from `pgg-default-keyserver-address'." | |
461 | (interactive "r") | |
462 | (let* ((packet | |
463 | (if (null signature) nil | |
464 | (with-temp-buffer | |
465 | (buffer-disable-undo) | |
466 | (if (fboundp 'set-buffer-multibyte) | |
467 | (set-buffer-multibyte nil)) | |
468 | (insert-file-contents signature) | |
469 | (cdr (assq 2 (pgg-decode-armor-region | |
470 | (point-min)(point-max))))))) | |
471 | (key (cdr (assq 'key-identifier packet))) | |
472 | status keyserver) | |
473 | (and (stringp key) | |
474 | pgg-query-keyserver | |
475 | (setq key (concat "0x" (pgg-truncate-key-identifier key))) | |
476 | (null (pgg-lookup-key key)) | |
477 | (or fetch (interactive-p)) | |
478 | (y-or-n-p (format "Key %s not found; attempt to fetch? " key)) | |
479 | (setq keyserver | |
480 | (or (cdr (assq 'preferred-key-server packet)) | |
481 | pgg-default-keyserver-address)) | |
482 | (pgg-fetch-key keyserver key)) | |
483 | (setq status | |
484 | (pgg-save-coding-system start end | |
485 | (pgg-invoke "verify-region" (or pgg-scheme pgg-default-scheme) | |
486 | (point-min) (point-max) signature))) | |
487 | (when (interactive-p) | |
488 | (let ((temp-buffer-show-function | |
489 | (function pgg-temp-buffer-show-function))) | |
490 | (with-output-to-temp-buffer pgg-echo-buffer | |
491 | (set-buffer standard-output) | |
492 | (insert-buffer-substring (if status pgg-output-buffer | |
493 | pgg-errors-buffer))))) | |
494 | status)) | |
495 | ||
496 | ;;;###autoload | |
497 | (defun pgg-verify (&optional signature fetch start end) | |
498 | "Verify the current buffer. | |
499 | If the optional argument SIGNATURE is non-nil, it is treated as | |
500 | the detached signature of the current region. | |
501 | If the optional argument FETCH is non-nil, we attempt to fetch the | |
502 | signer's public key from `pgg-default-keyserver-address'. | |
503 | If optional arguments START and END are specified, only verify data | |
504 | within the region." | |
505 | (interactive "") | |
506 | (let* ((start (or start (point-min))) | |
507 | (end (or end (point-max))) | |
508 | (status (pgg-verify-region start end signature fetch))) | |
509 | (when (interactive-p) | |
510 | (let ((temp-buffer-show-function | |
511 | (function pgg-temp-buffer-show-function))) | |
512 | (with-output-to-temp-buffer pgg-echo-buffer | |
513 | (set-buffer standard-output) | |
514 | (insert-buffer-substring (if status pgg-output-buffer | |
84861437 MB |
515 | pgg-errors-buffer))))) |
516 | status)) | |
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517 | |
518 | ;;;###autoload | |
519 | (defun pgg-insert-key () | |
520 | "Insert the ASCII armored public key." | |
521 | (interactive) | |
522 | (pgg-invoke "insert-key" (or pgg-scheme pgg-default-scheme))) | |
523 | ||
524 | ;;;###autoload | |
525 | (defun pgg-snarf-keys-region (start end) | |
526 | "Import public keys in the current region between START and END." | |
527 | (interactive "r") | |
528 | (pgg-save-coding-system start end | |
529 | (pgg-invoke "snarf-keys-region" (or pgg-scheme pgg-default-scheme) | |
530 | start end))) | |
531 | ||
532 | ;;;###autoload | |
533 | (defun pgg-snarf-keys () | |
534 | "Import public keys in the current buffer." | |
535 | (interactive "") | |
536 | (pgg-snarf-keys-region (point-min) (point-max))) | |
537 | ||
538 | (defun pgg-lookup-key (string &optional type) | |
539 | (pgg-invoke "lookup-key" (or pgg-scheme pgg-default-scheme) string type)) | |
540 | ||
541 | (defvar pgg-insert-url-function (function pgg-insert-url-with-w3)) | |
542 | ||
543 | (defun pgg-insert-url-with-w3 (url) | |
544 | (ignore-errors | |
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545 | (require 'url) |
546 | (let (buffer-file-name) | |
547 | (url-insert-file-contents url)))) | |
548 | ||
549 | (defvar pgg-insert-url-extra-arguments nil) | |
550 | (defvar pgg-insert-url-program nil) | |
551 | ||
552 | (defun pgg-insert-url-with-program (url) | |
553 | (let ((args (copy-sequence pgg-insert-url-extra-arguments)) | |
554 | process) | |
555 | (insert | |
556 | (with-temp-buffer | |
557 | (setq process | |
558 | (apply #'start-process " *PGG url*" (current-buffer) | |
559 | pgg-insert-url-program (nconc args (list url)))) | |
560 | (set-process-sentinel process #'ignore) | |
561 | (while (eq 'run (process-status process)) | |
562 | (accept-process-output process 5)) | |
563 | (delete-process process) | |
564 | (if (and process (eq 'run (process-status process))) | |
565 | (interrupt-process process)) | |
566 | (buffer-string))))) | |
567 | ||
568 | (defun pgg-fetch-key (keyserver key) | |
569 | "Attempt to fetch a KEY from KEYSERVER for addition to PGP or GnuPG keyring." | |
570 | (with-current-buffer (get-buffer-create pgg-output-buffer) | |
571 | (buffer-disable-undo) | |
572 | (erase-buffer) | |
573 | (let ((proto (if (string-match "^[a-zA-Z\\+\\.\\\\-]+:" keyserver) | |
574 | (substring keyserver 0 (1- (match-end 0)))))) | |
575 | (save-excursion | |
576 | (funcall pgg-insert-url-function | |
577 | (if proto keyserver | |
578 | (format "http://%s:11371/pks/lookup?op=get&search=%s" | |
579 | keyserver key)))) | |
580 | (when (re-search-forward "^-+BEGIN" nil 'last) | |
581 | (delete-region (point-min) (match-beginning 0)) | |
582 | (when (re-search-forward "^-+END" nil t) | |
583 | (delete-region (progn (end-of-line) (point)) | |
584 | (point-max))) | |
585 | (insert "\n") | |
586 | (with-temp-buffer | |
587 | (insert-buffer-substring pgg-output-buffer) | |
588 | (pgg-snarf-keys-region (point-min)(point-max))))))) | |
589 | ||
590 | ||
591 | (provide 'pgg) | |
592 | ||
593 | ;;; arch-tag: 9cc705dd-1e6a-4c90-8dce-c3561f9a2cf4 | |
594 | ;;; pgg.el ends here |