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1 | ;;; pgg-parse.el --- OpenPGP packet parsing |
2 | ||
ba318903 | 3 | ;; Copyright (C) 1999, 2002-2014 Free Software Foundation, Inc. |
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4 | |
5 | ;; Author: Daiki Ueno <ueno@unixuser.org> | |
6 | ;; Created: 1999/10/28 | |
7 | ;; Keywords: PGP, OpenPGP, GnuPG | |
bd78fa1d | 8 | ;; Package: pgg |
7d50c951 | 9 | ;; Obsolete-since: 24.1 |
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10 | |
11 | ;; This file is part of GNU Emacs. | |
12 | ||
eb3fa2cf | 13 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
23f87bed | 14 | ;; it under the terms of the GNU General Public License as published by |
eb3fa2cf GM |
15 | ;; the Free Software Foundation, either version 3 of the License, or |
16 | ;; (at your option) any later version. | |
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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 | |
eb3fa2cf | 24 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
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25 | |
26 | ;;; Commentary: | |
27 | ||
28 | ;; This module is based on | |
29 | ||
30 | ;; [OpenPGP] RFC 2440: "OpenPGP Message Format" | |
31 | ;; by John W. Noerenberg, II <jwn2@qualcomm.com>, | |
32 | ;; Jon Callas <jon@pgp.com>, Lutz Donnerhacke <lutz@iks-jena.de>, | |
33 | ;; Hal Finney <hal@pgp.com> and Rodney Thayer <rodney@unitran.com> | |
34 | ;; (1998/11) | |
35 | ||
36 | ;;; Code: | |
37 | ||
21ee0911 | 38 | (eval-when-compile |
f0b7f5a8 | 39 | ;; For Emacs <22.2 and XEmacs. |
21ee0911 MB |
40 | (unless (fboundp 'declare-function) (defmacro declare-function (&rest r))) |
41 | (require 'cl)) | |
23f87bed | 42 | |
23f87bed | 43 | (defgroup pgg-parse () |
8d764d76 | 44 | "OpenPGP packet parsing." |
23f87bed MB |
45 | :group 'pgg) |
46 | ||
47 | (defcustom pgg-parse-public-key-algorithm-alist | |
48 | '((1 . RSA) (2 . RSA-E) (3 . RSA-S) (16 . ELG-E) (17 . DSA) (20 . ELG)) | |
49 | "Alist of the assigned number to the public key algorithm." | |
50 | :group 'pgg-parse | |
51 | :type '(repeat | |
52 | (cons (sexp :tag "Number") (sexp :tag "Type")))) | |
53 | ||
54 | (defcustom pgg-parse-symmetric-key-algorithm-alist | |
55 | '((1 . IDEA) (2 . 3DES) (4 . CAST5) (5 . SAFER-SK128)) | |
9858f6c3 | 56 | "Alist of the assigned number to the symmetric key algorithm." |
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57 | :group 'pgg-parse |
58 | :type '(repeat | |
59 | (cons (sexp :tag "Number") (sexp :tag "Type")))) | |
60 | ||
61 | (defcustom pgg-parse-hash-algorithm-alist | |
bcc7dd61 MB |
62 | '((1 . MD5) (2 . SHA1) (3 . RIPEMD160) (5 . MD2) (8 . SHA256) (9 . SHA384) |
63 | (10 . SHA512)) | |
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64 | "Alist of the assigned number to the cryptographic hash algorithm." |
65 | :group 'pgg-parse | |
66 | :type '(repeat | |
67 | (cons (sexp :tag "Number") (sexp :tag "Type")))) | |
68 | ||
69 | (defcustom pgg-parse-compression-algorithm-alist | |
70 | '((0 . nil); Uncompressed | |
71 | (1 . ZIP) | |
72 | (2 . ZLIB)) | |
73 | "Alist of the assigned number to the compression algorithm." | |
74 | :group 'pgg-parse | |
75 | :type '(repeat | |
76 | (cons (sexp :tag "Number") (sexp :tag "Type")))) | |
77 | ||
78 | (defcustom pgg-parse-signature-type-alist | |
79 | '((0 . "Signature of a binary document") | |
80 | (1 . "Signature of a canonical text document") | |
81 | (2 . "Standalone signature") | |
82 | (16 . "Generic certification of a User ID and Public Key packet") | |
83 | (17 . "Persona certification of a User ID and Public Key packet") | |
84 | (18 . "Casual certification of a User ID and Public Key packet") | |
85 | (19 . "Positive certification of a User ID and Public Key packet") | |
86 | (24 . "Subkey Binding Signature") | |
87 | (31 . "Signature directly on a key") | |
88 | (32 . "Key revocation signature") | |
89 | (40 . "Subkey revocation signature") | |
90 | (48 . "Certification revocation signature") | |
91 | (64 . "Timestamp signature.")) | |
92 | "Alist of the assigned number to the signature type." | |
93 | :group 'pgg-parse | |
94 | :type '(repeat | |
95 | (cons (sexp :tag "Number") (sexp :tag "Type")))) | |
96 | ||
97 | (defcustom pgg-ignore-packet-checksum t; XXX | |
98 | "If non-nil checksum of each ascii armored packet will be ignored." | |
99 | :group 'pgg-parse | |
100 | :type 'boolean) | |
101 | ||
102 | (defvar pgg-armor-header-lines | |
103 | '("^-----BEGIN PGP MESSAGE\\(, PART [0-9]+\\(/[0-9]+\\)?\\)?-----\r?$" | |
104 | "^-----BEGIN PGP PUBLIC KEY BLOCK-----\r?$" | |
105 | "^-----BEGIN PGP PRIVATE KEY BLOCK-----\r?$" | |
106 | "^-----BEGIN PGP SIGNATURE-----\r?$") | |
107 | "Armor headers.") | |
108 | ||
109 | (eval-and-compile | |
110 | (defalias 'pgg-char-int (if (fboundp 'char-int) | |
111 | 'char-int | |
112 | 'identity))) | |
113 | ||
114 | (defmacro pgg-format-key-identifier (string) | |
115 | `(mapconcat (lambda (c) (format "%02X" (pgg-char-int c))) | |
116 | ,string "") | |
117 | ;; `(upcase (apply #'format "%02x%02x%02x%02x%02x%02x%02x%02x" | |
e9bd5782 | 118 | ;; (string-to-number-list ,string))) |
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119 | ) |
120 | ||
121 | (defmacro pgg-parse-time-field (bytes) | |
122 | `(list (logior (lsh (car ,bytes) 8) | |
123 | (nth 1 ,bytes)) | |
124 | (logior (lsh (nth 2 ,bytes) 8) | |
125 | (nth 3 ,bytes)) | |
126 | 0)) | |
127 | ||
128 | (defmacro pgg-byte-after (&optional pos) | |
129 | `(pgg-char-int (char-after ,(or pos `(point))))) | |
130 | ||
131 | (defmacro pgg-read-byte () | |
132 | `(pgg-char-int (char-after (prog1 (point) (forward-char))))) | |
133 | ||
134 | (defmacro pgg-read-bytes-string (nbytes) | |
135 | `(buffer-substring | |
136 | (point) (prog1 (+ ,nbytes (point)) | |
137 | (forward-char ,nbytes)))) | |
138 | ||
139 | (defmacro pgg-read-bytes (nbytes) | |
140 | `(mapcar #'pgg-char-int (pgg-read-bytes-string ,nbytes)) | |
e9bd5782 | 141 | ;; `(string-to-number-list (pgg-read-bytes-string ,nbytes)) |
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142 | ) |
143 | ||
144 | (defmacro pgg-read-body-string (ptag) | |
145 | `(if (nth 1 ,ptag) | |
146 | (pgg-read-bytes-string (nth 1 ,ptag)) | |
147 | (pgg-read-bytes-string (- (point-max) (point))))) | |
148 | ||
149 | (defmacro pgg-read-body (ptag) | |
150 | `(mapcar #'pgg-char-int (pgg-read-body-string ,ptag)) | |
e9bd5782 | 151 | ;; `(string-to-number-list (pgg-read-body-string ,ptag)) |
23f87bed MB |
152 | ) |
153 | ||
154 | (defalias 'pgg-skip-bytes 'forward-char) | |
155 | ||
156 | (defmacro pgg-skip-header (ptag) | |
157 | `(pgg-skip-bytes (nth 2 ,ptag))) | |
158 | ||
159 | (defmacro pgg-skip-body (ptag) | |
160 | `(pgg-skip-bytes (nth 1 ,ptag))) | |
161 | ||
162 | (defmacro pgg-set-alist (alist key value) | |
163 | `(setq ,alist (nconc ,alist (list (cons ,key ,value))))) | |
164 | ||
165 | (when (fboundp 'define-ccl-program) | |
166 | ||
167 | (define-ccl-program pgg-parse-crc24 | |
168 | '(1 | |
169 | ((loop | |
170 | (read r0) (r1 ^= r0) (r2 ^= 0) | |
171 | (r5 = 0) | |
172 | (loop | |
173 | (r1 <<= 1) | |
174 | (r1 += ((r2 >> 15) & 1)) | |
175 | (r2 <<= 1) | |
176 | (if (r1 & 256) | |
177 | ((r1 ^= 390) (r2 ^= 19707))) | |
178 | (if (r5 < 7) | |
179 | ((r5 += 1) | |
180 | (repeat)))) | |
181 | (repeat))))) | |
182 | ||
14ecd9e4 GM |
183 | (defvar pgg-parse-crc24) |
184 | ||
23f87bed MB |
185 | (defun pgg-parse-crc24-string (string) |
186 | (let ((h (vector nil 183 1230 nil nil nil nil nil nil))) | |
187 | (ccl-execute-on-string pgg-parse-crc24 h string) | |
188 | (format "%c%c%c" | |
189 | (logand (aref h 1) 255) | |
190 | (logand (lsh (aref h 2) -8) 255) | |
191 | (logand (aref h 2) 255))))) | |
192 | ||
193 | (defmacro pgg-parse-length-type (c) | |
194 | `(cond | |
195 | ((< ,c 192) (cons ,c 1)) | |
196 | ((< ,c 224) | |
197 | (cons (+ (lsh (- ,c 192) 8) | |
198 | (pgg-byte-after (+ 2 (point))) | |
199 | 192) | |
200 | 2)) | |
201 | ((= ,c 255) | |
202 | (cons (cons (logior (lsh (pgg-byte-after (+ 2 (point))) 8) | |
203 | (pgg-byte-after (+ 3 (point)))) | |
204 | (logior (lsh (pgg-byte-after (+ 4 (point))) 8) | |
205 | (pgg-byte-after (+ 5 (point))))) | |
206 | 5)) | |
207 | (t;partial body length | |
208 | '(0 . 0)))) | |
209 | ||
210 | (defun pgg-parse-packet-header () | |
211 | (let ((ptag (pgg-byte-after)) | |
212 | length-type content-tag packet-bytes header-bytes) | |
213 | (if (zerop (logand 64 ptag));Old format | |
214 | (progn | |
215 | (setq length-type (logand ptag 3) | |
216 | length-type (if (= 3 length-type) 0 (lsh 1 length-type)) | |
217 | content-tag (logand 15 (lsh ptag -2)) | |
218 | packet-bytes 0 | |
219 | header-bytes (1+ length-type)) | |
220 | (dotimes (i length-type) | |
221 | (setq packet-bytes | |
222 | (logior (lsh packet-bytes 8) | |
223 | (pgg-byte-after (+ 1 i (point))))))) | |
224 | (setq content-tag (logand 63 ptag) | |
225 | length-type (pgg-parse-length-type | |
226 | (pgg-byte-after (1+ (point)))) | |
227 | packet-bytes (car length-type) | |
228 | header-bytes (1+ (cdr length-type)))) | |
229 | (list content-tag packet-bytes header-bytes))) | |
230 | ||
231 | (defun pgg-parse-packet (ptag) | |
232 | (case (car ptag) | |
233 | (1 ;Public-Key Encrypted Session Key Packet | |
234 | (pgg-parse-public-key-encrypted-session-key-packet ptag)) | |
235 | (2 ;Signature Packet | |
236 | (pgg-parse-signature-packet ptag)) | |
237 | (3 ;Symmetric-Key Encrypted Session Key Packet | |
238 | (pgg-parse-symmetric-key-encrypted-session-key-packet ptag)) | |
239 | ;; 4 -- One-Pass Signature Packet | |
240 | ;; 5 -- Secret Key Packet | |
241 | (6 ;Public Key Packet | |
242 | (pgg-parse-public-key-packet ptag)) | |
243 | ;; 7 -- Secret Subkey Packet | |
244 | ;; 8 -- Compressed Data Packet | |
245 | (9 ;Symmetrically Encrypted Data Packet | |
246 | (pgg-read-body-string ptag)) | |
247 | (10 ;Marker Packet | |
248 | (pgg-read-body-string ptag)) | |
249 | (11 ;Literal Data Packet | |
250 | (pgg-read-body-string ptag)) | |
251 | ;; 12 -- Trust Packet | |
252 | (13 ;User ID Packet | |
253 | (pgg-read-body-string ptag)) | |
254 | ;; 14 -- Public Subkey Packet | |
255 | ;; 60 .. 63 -- Private or Experimental Values | |
256 | )) | |
257 | ||
258 | (defun pgg-parse-packets (&optional header-parser body-parser) | |
259 | (let ((header-parser | |
260 | (or header-parser | |
261 | (function pgg-parse-packet-header))) | |
262 | (body-parser | |
263 | (or body-parser | |
264 | (function pgg-parse-packet))) | |
265 | result ptag) | |
266 | (while (> (point-max) (1+ (point))) | |
267 | (setq ptag (funcall header-parser)) | |
268 | (pgg-skip-header ptag) | |
269 | (push (cons (car ptag) | |
270 | (save-excursion | |
271 | (funcall body-parser ptag))) | |
272 | result) | |
273 | (if (zerop (nth 1 ptag)) | |
274 | (goto-char (point-max)) | |
275 | (forward-char (nth 1 ptag)))) | |
276 | result)) | |
277 | ||
278 | (defun pgg-parse-signature-subpacket-header () | |
279 | (let ((length-type (pgg-parse-length-type (pgg-byte-after)))) | |
280 | (list (pgg-byte-after (+ (cdr length-type) (point))) | |
281 | (1- (car length-type)) | |
282 | (1+ (cdr length-type))))) | |
283 | ||
284 | (defun pgg-parse-signature-subpacket (ptag) | |
285 | (case (car ptag) | |
286 | (2 ;signature creation time | |
287 | (cons 'creation-time | |
288 | (let ((bytes (pgg-read-bytes 4))) | |
289 | (pgg-parse-time-field bytes)))) | |
290 | (3 ;signature expiration time | |
291 | (cons 'signature-expiry | |
292 | (let ((bytes (pgg-read-bytes 4))) | |
293 | (pgg-parse-time-field bytes)))) | |
294 | (4 ;exportable certification | |
295 | (cons 'exportability (pgg-read-byte))) | |
296 | (5 ;trust signature | |
297 | (cons 'trust-level (pgg-read-byte))) | |
298 | (6 ;regular expression | |
299 | (cons 'regular-expression | |
300 | (pgg-read-body-string ptag))) | |
301 | (7 ;revocable | |
302 | (cons 'revocability (pgg-read-byte))) | |
303 | (9 ;key expiration time | |
304 | (cons 'key-expiry | |
305 | (let ((bytes (pgg-read-bytes 4))) | |
306 | (pgg-parse-time-field bytes)))) | |
307 | ;; 10 = placeholder for backward compatibility | |
308 | (11 ;preferred symmetric algorithms | |
309 | (cons 'preferred-symmetric-key-algorithm | |
310 | (cdr (assq (pgg-read-byte) | |
311 | pgg-parse-symmetric-key-algorithm-alist)))) | |
312 | (12 ;revocation key | |
313 | ) | |
314 | (16 ;issuer key ID | |
315 | (cons 'key-identifier | |
316 | (pgg-format-key-identifier (pgg-read-body-string ptag)))) | |
317 | (20 ;notation data | |
318 | (pgg-skip-bytes 4) | |
319 | (cons 'notation | |
320 | (let ((name-bytes (pgg-read-bytes 2)) | |
321 | (value-bytes (pgg-read-bytes 2))) | |
322 | (cons (pgg-read-bytes-string | |
323 | (logior (lsh (car name-bytes) 8) | |
324 | (nth 1 name-bytes))) | |
325 | (pgg-read-bytes-string | |
326 | (logior (lsh (car value-bytes) 8) | |
327 | (nth 1 value-bytes))))))) | |
328 | (21 ;preferred hash algorithms | |
329 | (cons 'preferred-hash-algorithm | |
330 | (cdr (assq (pgg-read-byte) | |
331 | pgg-parse-hash-algorithm-alist)))) | |
332 | (22 ;preferred compression algorithms | |
333 | (cons 'preferred-compression-algorithm | |
334 | (cdr (assq (pgg-read-byte) | |
335 | pgg-parse-compression-algorithm-alist)))) | |
336 | (23 ;key server preferences | |
337 | (cons 'key-server-preferences | |
338 | (pgg-read-body ptag))) | |
339 | (24 ;preferred key server | |
340 | (cons 'preferred-key-server | |
341 | (pgg-read-body-string ptag))) | |
342 | ;; 25 = primary user id | |
343 | (26 ;policy URL | |
344 | (cons 'policy-url (pgg-read-body-string ptag))) | |
345 | ;; 27 = key flags | |
346 | ;; 28 = signer's user id | |
347 | ;; 29 = reason for revocation | |
348 | ;; 100 to 110 = internal or user-defined | |
349 | )) | |
350 | ||
351 | (defun pgg-parse-signature-packet (ptag) | |
352 | (let* ((signature-version (pgg-byte-after)) | |
353 | (result (list (cons 'version signature-version))) | |
354 | hashed-material field n) | |
355 | (cond | |
356 | ((= signature-version 3) | |
357 | (pgg-skip-bytes 2) | |
358 | (setq hashed-material (pgg-read-bytes 5)) | |
359 | (pgg-set-alist result | |
360 | 'signature-type | |
361 | (cdr (assq (pop hashed-material) | |
362 | pgg-parse-signature-type-alist))) | |
363 | (pgg-set-alist result | |
364 | 'creation-time | |
365 | (pgg-parse-time-field hashed-material)) | |
366 | (pgg-set-alist result | |
367 | 'key-identifier | |
368 | (pgg-format-key-identifier | |
369 | (pgg-read-bytes-string 8))) | |
370 | (pgg-set-alist result | |
371 | 'public-key-algorithm (pgg-read-byte)) | |
372 | (pgg-set-alist result | |
373 | 'hash-algorithm (pgg-read-byte))) | |
374 | ((= signature-version 4) | |
375 | (pgg-skip-bytes 1) | |
376 | (pgg-set-alist result | |
377 | 'signature-type | |
378 | (cdr (assq (pgg-read-byte) | |
379 | pgg-parse-signature-type-alist))) | |
380 | (pgg-set-alist result | |
381 | 'public-key-algorithm | |
382 | (pgg-read-byte)) | |
383 | (pgg-set-alist result | |
384 | 'hash-algorithm (pgg-read-byte)) | |
385 | (when (>= 10000 (setq n (pgg-read-bytes 2) | |
386 | n (logior (lsh (car n) 8) | |
387 | (nth 1 n)))) | |
388 | (save-restriction | |
389 | (narrow-to-region (point)(+ n (point))) | |
390 | (nconc result | |
391 | (mapcar (function cdr) ;remove packet types | |
392 | (pgg-parse-packets | |
393 | #'pgg-parse-signature-subpacket-header | |
394 | #'pgg-parse-signature-subpacket))) | |
395 | (goto-char (point-max)))) | |
396 | (when (>= 10000 (setq n (pgg-read-bytes 2) | |
397 | n (logior (lsh (car n) 8) | |
398 | (nth 1 n)))) | |
399 | (save-restriction | |
400 | (narrow-to-region (point)(+ n (point))) | |
401 | (nconc result | |
402 | (mapcar (function cdr) ;remove packet types | |
403 | (pgg-parse-packets | |
404 | #'pgg-parse-signature-subpacket-header | |
405 | #'pgg-parse-signature-subpacket))))))) | |
406 | ||
407 | (setcdr (setq field (assq 'public-key-algorithm | |
408 | result)) | |
409 | (cdr (assq (cdr field) | |
410 | pgg-parse-public-key-algorithm-alist))) | |
411 | (setcdr (setq field (assq 'hash-algorithm | |
412 | result)) | |
413 | (cdr (assq (cdr field) | |
414 | pgg-parse-hash-algorithm-alist))) | |
415 | result)) | |
416 | ||
417 | (defun pgg-parse-public-key-encrypted-session-key-packet (ptag) | |
418 | (let (result) | |
419 | (pgg-set-alist result | |
420 | 'version (pgg-read-byte)) | |
421 | (pgg-set-alist result | |
422 | 'key-identifier | |
423 | (pgg-format-key-identifier | |
424 | (pgg-read-bytes-string 8))) | |
425 | (pgg-set-alist result | |
426 | 'public-key-algorithm | |
427 | (cdr (assq (pgg-read-byte) | |
428 | pgg-parse-public-key-algorithm-alist))) | |
429 | result)) | |
430 | ||
431 | (defun pgg-parse-symmetric-key-encrypted-session-key-packet (ptag) | |
432 | (let (result) | |
433 | (pgg-set-alist result | |
434 | 'version | |
435 | (pgg-read-byte)) | |
436 | (pgg-set-alist result | |
437 | 'symmetric-key-algorithm | |
438 | (cdr (assq (pgg-read-byte) | |
439 | pgg-parse-symmetric-key-algorithm-alist))) | |
440 | result)) | |
441 | ||
442 | (defun pgg-parse-public-key-packet (ptag) | |
443 | (let* ((key-version (pgg-read-byte)) | |
444 | (result (list (cons 'version key-version))) | |
445 | field) | |
446 | (cond | |
447 | ((= 3 key-version) | |
448 | (pgg-set-alist result | |
449 | 'creation-time | |
450 | (let ((bytes (pgg-read-bytes 4))) | |
451 | (pgg-parse-time-field bytes))) | |
452 | (pgg-set-alist result | |
453 | 'key-expiry (pgg-read-bytes 2)) | |
454 | (pgg-set-alist result | |
455 | 'public-key-algorithm (pgg-read-byte))) | |
456 | ((= 4 key-version) | |
457 | (pgg-set-alist result | |
458 | 'creation-time | |
459 | (let ((bytes (pgg-read-bytes 4))) | |
460 | (pgg-parse-time-field bytes))) | |
461 | (pgg-set-alist result | |
462 | 'public-key-algorithm (pgg-read-byte)))) | |
463 | ||
464 | (setcdr (setq field (assq 'public-key-algorithm | |
465 | result)) | |
466 | (cdr (assq (cdr field) | |
467 | pgg-parse-public-key-algorithm-alist))) | |
468 | result)) | |
469 | ||
14ecd9e4 GM |
470 | ;; p-d-p only calls this if it is defined, but the compiler does not |
471 | ;; recognize that. | |
472 | (declare-function pgg-parse-crc24-string "pgg-parse" (string)) | |
473 | ||
23f87bed MB |
474 | (defun pgg-decode-packets () |
475 | (if (re-search-forward "^=\\([A-Za-z0-9+/]\\{4\\}\\)$" nil t) | |
476 | (let ((p (match-beginning 0)) | |
477 | (checksum (match-string 1))) | |
478 | (delete-region p (point-max)) | |
479 | (if (ignore-errors (base64-decode-region (point-min) p)) | |
480 | (or (not (fboundp 'pgg-parse-crc24-string)) | |
481 | pgg-ignore-packet-checksum | |
482 | (string-equal (base64-encode-string (pgg-parse-crc24-string | |
483 | (buffer-string))) | |
484 | checksum) | |
485 | (progn | |
486 | (message "PGP packet checksum does not match") | |
487 | nil)) | |
488 | (message "PGP packet contain invalid base64") | |
489 | nil)) | |
490 | (message "PGP packet checksum not found") | |
491 | nil)) | |
492 | ||
493 | (defun pgg-decode-armor-region (start end) | |
494 | (save-restriction | |
495 | (narrow-to-region start end) | |
496 | (goto-char (point-min)) | |
497 | (re-search-forward "^-+BEGIN PGP" nil t) | |
498 | (delete-region (point-min) | |
499 | (and (search-forward "\n\n") | |
500 | (match-end 0))) | |
501 | (when (pgg-decode-packets) | |
502 | (goto-char (point-min)) | |
503 | (pgg-parse-packets)))) | |
504 | ||
505 | (defun pgg-parse-armor (string) | |
506 | (with-temp-buffer | |
507 | (buffer-disable-undo) | |
765d4319 KY |
508 | (unless (featurep 'xemacs) |
509 | (set-buffer-multibyte nil)) | |
23f87bed MB |
510 | (insert string) |
511 | (pgg-decode-armor-region (point-min)(point)))) | |
512 | ||
513 | (eval-and-compile | |
514 | (defalias 'pgg-string-as-unibyte (if (fboundp 'string-as-unibyte) | |
515 | 'string-as-unibyte | |
516 | 'identity))) | |
517 | ||
518 | (defun pgg-parse-armor-region (start end) | |
519 | (pgg-parse-armor (pgg-string-as-unibyte (buffer-substring start end)))) | |
520 | ||
521 | (provide 'pgg-parse) | |
522 | ||
23f87bed | 523 | ;;; pgg-parse.el ends here |