-;;; epg.el --- EasyPG, yet another GnuPG interface.
+;;; epg.el --- the EasyPG Library
;; Copyright (C) 1999, 2000, 2002, 2003, 2004,
;; 2005, 2006 Free Software Foundation, Inc.
;; Copyright (C) 2006 Daiki Ueno
;;; Code:
(defgroup epg ()
- "EasyPG, yet another GnuPG interface.")
+ "The EasyPG Library")
(defcustom epg-gpg-program "gpg"
"The `gpg' executable."
(defvar epg-context nil)
(defvar epg-debug nil)
-(defvar epg-colons-pub-spec
- '((trust "[^:]")
- (length "[0-9]+" 0 string-to-number)
- (algorithm "[0-9]+" 0 string-to-number)
- (key-id "[^:]+")
- (creation-date "[0-9]+")
- (expiration-date "[0-9]+")
- nil
- (ownertrust "[^:]")
- nil
- nil
- (capability "[escaESCA]*"))
- "The schema of keylisting output whose type is \"pub\".
-This is used by `epg-list-keys'.")
-
-(defvar epg-colons-sec-spec
- '((trust "[^:]")
- (length "[0-9]+" 0 string-to-number)
- (algorithm "[0-9]+" 0 string-to-number)
- (key-id "[^:]+")
- (creation-date "[0-9]+")
- (expiration-date "[0-9]+")
- nil
- (ownertrust "[^:]"))
-"The schema of keylisting output whose type is \"sec\".
-This is used by `epg-list-keys'.")
-
-(defvar epg-colons-uid-spec
- '((trust "[^:]")
- nil
- nil
- nil
- (creation-date "[0-9]+")
- (expiration-date "[0-9]+")
- (hash "[^:]+")
- nil
- (user-id "[^:]+"))
- "The schema of keylisting output whose type is \"uid\".
-This is used by `epg-list-keys'.")
+;; from gnupg/include/cipher.h
+(defconst epg-cipher-algorithm-alist
+ '((0 . "NONE")
+ (1 . "IDEA")
+ (2 . "3DES")
+ (3 . "CAST5")
+ (4 . "BLOWFISH")
+ (7 . "AES")
+ (8 . "AES192")
+ (9 . "AES256")
+ (10 . "TWOFISH")
+ (110 . "DUMMY")))
+
+;; from gnupg/include/cipher.h
+(defconst epg-pubkey-algorithm-alist
+ '((1 . "RSA")
+ (2 . "RSA_E")
+ (3 . "RSA_S")
+ (16 . "ELGAMAL_E")
+ (17 . "DSA")
+ (20 . "ELGAMAL")))
+
+;; from gnupg/include/cipher.h
+(defconst epg-digest-algorithm-alist
+ '((1 . "MD5")
+ (2 . "SHA1")
+ (3 . "RMD160")
+ (8 . "SHA256")
+ (9 . "SHA384")
+ (10 . "SHA512")))
+
+;; from gnupg/include/cipher.h
+(defconst epg-compress-algorithm-alist
+ '((0 . "NONE")
+ (1 . "ZIP")
+ (2 . "ZLIB")
+ (3 . "BZIP2")))
+
+(defconst epg-invalid-recipients-alist
+ '((0 . "No specific reason given")
+ (1 . "Not Found")
+ (2 . "Ambigious specification")
+ (3 . "Wrong key usage")
+ (4 . "Key revoked")
+ (5 . "Key expired")
+ (6 . "No CRL known")
+ (7 . "CRL too old")
+ (8 . "Policy mismatch")
+ (9 . "Not a secret key")
+ (10 . "Key not trusted")))
+
+(defvar epg-key-validity-alist
+ '((?o . unknown)
+ (?i . invalid)
+ (?d . disabled)
+ (?r . revoked)
+ (?e . expired)
+ (?- . none)
+ (?q . undefined)
+ (?n . never)
+ (?m . marginal)
+ (?f . full)
+ (?u . ultimate)))
+
+(defvar epg-key-capablity-alist
+ '((?e . encrypt)
+ (?s . sign)
+ (?c . certify)
+ (?a . authentication)))
(defvar epg-prompt-alist nil)
"Set the fingerprint of SIGNATURE."
(aset signature 4 fingerprint))
+(defun epg-make-key (owner-trust)
+ "Return a key object."
+ (vector owner-trust nil nil))
+
+(defun epg-key-owner-trust (key)
+ "Return the owner trust of KEY."
+ (aref key 0))
+
+(defun epg-key-sub-key-list (key)
+ "Return the sub key list of KEY."
+ (aref key 1))
+
+(defun epg-key-user-id-list (key)
+ "Return the user ID list of KEY."
+ (aref key 2))
+
+(defun epg-key-set-sub-key-list (key sub-key-list)
+ "Set the sub key list of KEY."
+ (aset key 1 sub-key-list))
+
+(defun epg-key-set-user-id-list (key user-id-list)
+ "Set the user ID list of KEY."
+ (aset key 2 user-id-list))
+
+(defun epg-make-sub-key (validity capability secret algorithm length id
+ creation-time expiration-time)
+ "Return a sub key object."
+ (vector validity capability secret algorithm length id creation-time
+ expiration-time nil))
+
+(defun epg-sub-key-validity (sub-key)
+ "Return the validity of SUB-KEY."
+ (aref sub-key 0))
+
+(defun epg-sub-key-capability (sub-key)
+ "Return the capability of SUB-KEY."
+ (aref sub-key 1))
+
+(defun epg-sub-key-secret (sub-key)
+ "Return non-nil if SUB-KEY is a secret key."
+ (aref sub-key 2))
+
+(defun epg-sub-key-algorithm (sub-key)
+ "Return the algorithm of SUB-KEY."
+ (aref sub-key 3))
+
+(defun epg-sub-key-length (sub-key)
+ "Return the length of SUB-KEY."
+ (aref sub-key 4))
+
+(defun epg-sub-key-id (sub-key)
+ "Return the ID of SUB-KEY."
+ (aref sub-key 5))
+
+(defun epg-sub-key-creation-time (sub-key)
+ "Return the creation time of SUB-KEY."
+ (aref sub-key 6))
+
+(defun epg-sub-key-expiration-time (sub-key)
+ "Return the expiration time of SUB-KEY."
+ (aref sub-key 7))
+
+(defun epg-sub-key-fingerprint (sub-key)
+ "Return the fingerprint of SUB-KEY."
+ (aref sub-key 8))
+
+(defun epg-sub-key-set-fingerprint (sub-key fingerprint)
+ "Set the fingerprint of SUB-KEY.
+This function is for internal use only."
+ (aset sub-key 8 fingerprint))
+
+(defun epg-make-user-id (validity name)
+ "Return a user ID object."
+ (vector validity name nil))
+
+(defun epg-user-id-validity (user-id)
+ "Return the validity of USER-ID."
+ (aref user-id 0))
+
+(defun epg-user-id-name (user-id)
+ "Return the name of USER-ID."
+ (aref user-id 1))
+
+(defun epg-user-id-signature-list (user-id)
+ "Return the signature list of USER-ID."
+ (aref user-id 2))
+
+(defun epg-user-id-set-signature-list (user-id signature-list)
+ "Set the signature list of USER-ID."
+ (aset user-id 2 signature-list))
+
(defun epg-context-result-for (context name)
(cdr (assq name (epg-context-result context))))
"Start `epg-gpg-program' in a subprocess with given ARGS."
(let* ((args (append (list "--no-tty"
"--status-fd" "1"
- "--command-fd" "0"
- "--yes") ; overwrite
+ "--command-fd" "0")
(if (epg-context-armor context) '("--armor"))
(if (epg-context-textmode context) '("--textmode"))
(if (epg-context-output-file context)
(let ((signature (car (epg-context-result-for epg-context 'verify))))
(if (and signature
(eq (epg-signature-status signature) 'good))
- (epg-signature-set-validity signature 'fully))))
+ (epg-signature-set-validity signature 'full))))
(defun epg-status-TRUST_ULTIMATE (process string)
(let ((signature (car (epg-context-result-for epg-context 'verify))))
(cons 'bad-armor
(epg-context-result-for epg-context 'error))))
+(defun epg-status-INV_RECP (process string)
+ (if (string-match "\\`\\([0-9]+\\) \\(.*\\)" string)
+ (epg-context-set-result-for
+ epg-context 'error
+ (cons (list 'invalid-recipient
+ (string-to-number (match-string 1 string))
+ (match-string 2 string))
+ (epg-context-result-for epg-context 'error)))))
+
+(defun epg-status-NO_RECP (process string)
+ (epg-context-set-result-for
+ epg-context 'error
+ (cons 'no-recipients
+ (epg-context-result-for epg-context 'error))))
+
(defun epg-passphrase-callback-function (key-id handback)
(read-passwd
(if (eq key-id 'SYM)
(defun epg-progress-callback-function (what char current total handback)
(message "%s: %d%%/%d%%" what current total))
-(defun epg-list-keys (name &optional secret)
- "List keys associated with STRING."
- (let ((args (list "--with-colons" "--no-greeting" "--batch"
- "--fixed-list-mode"
- (if secret "--list-secret-keys" "--list-keys")
- name))
- keys type symbol pointer)
+(defun epg-configuration ()
+ "Return a list of internal configuration parameters of `epg-gpg-program'."
+ (let (config type)
+ (with-temp-buffer
+ (apply #'call-process epg-gpg-program nil (list t nil) nil
+ '("--with-colons" "--list-config"))
+ (goto-char (point-min))
+ (while (re-search-forward "^cfg:\\([^:]+\\):\\(.*\\)" nil t)
+ (setq type (intern (match-string 1))
+ config (cons (cons type
+ (if (memq type
+ '(pubkey cipher digest compress))
+ (mapcar #'string-to-number
+ (delete "" (split-string
+ (match-string 2)
+ ";")))
+ (match-string 2)))
+ config))))
+ config))
+
+(defun epg-list-keys-1 (name mode)
+ (let ((args (append (list "--with-colons" "--no-greeting" "--batch"
+ "--fixed-list-mode" "--with-fingerprint"
+ "--with-fingerprint"
+ (if mode "--list-secret-keys" "--list-keys"))
+ (if name (list name))))
+ keys string field index)
(with-temp-buffer
(apply #'call-process epg-gpg-program nil (list t nil) nil args)
(goto-char (point-min))
- (while (looking-at "\\([a-z][a-z][a-z]\\):\\(.*\\)")
- (setq type (match-string 1)
- symbol (intern-soft (format "epg-colons-%s-spec" type)))
- (if (member type '("pub" "sec"))
- (setq keys (cons nil keys)))
- (if (and symbol
- (boundp symbol))
- (setcar keys (cons (cons (intern type)
- (epg-parse-colons
- (symbol-value symbol)
- (match-string 2)))
- (car keys))))
- (forward-line)))
- (setq pointer keys)
- (while pointer
- (setcar pointer (nreverse (car pointer)))
- (setq pointer (cdr pointer)))
+ (while (re-search-forward "^[a-z][a-z][a-z]:.*" nil t)
+ (setq keys (cons (make-vector 15 nil) keys)
+ string (match-string 0)
+ index 0
+ field 0)
+ (while (eq index
+ (string-match "\\([^:]+\\)?:" string index))
+ (setq index (match-end 0))
+ (aset (car keys) field (match-string 1 string))
+ (setq field (1+ field))))
+ (nreverse keys))))
+
+(defun epg-make-sub-key-1 (line)
+ (epg-make-sub-key
+ (cdr (assq (string-to-char (aref line 1)) epg-key-validity-alist))
+ (delq nil
+ (mapcar (lambda (char) (cdr (assq char epg-key-capablity-alist)))
+ (aref line 11)))
+ (member (aref line 0) '("sec" "ssb"))
+ (string-to-number (aref line 3))
+ (string-to-number (aref line 2))
+ (aref line 4)
+ (aref line 5)
+ (aref line 6)))
+
+(defun epg-list-keys (&optional name mode)
+ (let ((lines (epg-list-keys-1 name mode))
+ keys)
+ (while lines
+ (cond
+ ((member (aref (car lines) 0) '("pub" "sec"))
+ (when (car keys)
+ (epg-key-set-sub-key-list
+ (car keys)
+ (nreverse (epg-key-sub-key-list (car keys))))
+ (epg-key-set-user-id-list
+ (car keys)
+ (nreverse (epg-key-user-id-list (car keys)))))
+ (setq keys (cons (epg-make-key
+ (cdr (assq (string-to-char (aref (car lines) 8))
+ epg-key-validity-alist)))
+ keys))
+ (epg-key-set-sub-key-list
+ (car keys)
+ (cons (epg-make-sub-key-1 (car lines))
+ (epg-key-sub-key-list (car keys)))))
+ ((member (aref (car lines) 0) '("sub" "ssb"))
+ (epg-key-set-sub-key-list
+ (car keys)
+ (cons (epg-make-sub-key-1 (car lines))
+ (epg-key-sub-key-list (car keys)))))
+ ((equal (aref (car lines) 0) "uid")
+ (epg-key-set-user-id-list
+ (car keys)
+ (cons (epg-make-user-id
+ (cdr (assq (string-to-char (aref (car lines) 1))
+ epg-key-validity-alist))
+ (aref (car lines) 9))
+ (epg-key-user-id-list (car keys)))))
+ ((equal (aref (car lines) 0) "fpr")
+ (epg-sub-key-set-fingerprint (car (epg-key-sub-key-list (car keys)))
+ (aref (car lines) 9))))
+ (setq lines (cdr lines)))
(nreverse keys)))
-(defun epg-parse-colons (alist string)
- (let ((index 0)
- result)
- (while (and alist
- (or (null (car alist))
- (eq index
- (string-match
- (concat "\\(" (nth 1 (car alist)) "\\)?:")
- string index))))
- (if (car alist)
- (progn
- (setq index (match-end 0))
- (if (match-beginning 1)
- (setq result
- (cons (cons (car (car alist))
- (funcall (or (nth 3 (car alist)) #'identity)
- (match-string
- (1+ (or (nth 2 (car alist)) 0))
- string)))
- result))))
- (setq index (1+ index)))
- (setq alist (cdr alist)))
- (nreverse result)))
-
(if (fboundp 'make-temp-file)
(defalias 'epg-make-temp-file 'make-temp-file)
;; stolen from poe.el.
(epg-start-decrypt context (epg-make-data-from-file cipher))
(epg-wait-for-completion context)
(if (epg-context-result-for context 'error)
- (error "Decryption failed"))
+ (error "Decrypt failed: %S"
+ (epg-context-result-for context 'error)))
(unless plain
(epg-read-output context)))
(unless plain
(epg-start-decrypt context (epg-make-data-from-file input-file))
(epg-wait-for-completion context)
(if (epg-context-result-for context 'error)
- (error "Decryption failed"))
+ (error "Decrypt failed: %S"
+ (epg-context-result-for context 'error)))
(epg-read-output context))
(epg-delete-output-file context)
(if (file-exists-p input-file)
(epg-start-sign context (epg-make-data-from-file plain) mode)
(epg-wait-for-completion context)
(if (epg-context-result-for context 'error)
- (error "Sign failed"))
+ (error "Sign failed: %S"
+ (epg-context-result-for context 'error)))
(unless signature
(epg-read-output context)))
(unless signature
(epg-start-sign context (epg-make-data-from-string plain) mode)
(epg-wait-for-completion context)
(if (epg-context-result-for context 'error)
- (error "Sign failed"))
+ (error "Sign failed: %S"
+ (epg-context-result-for context 'error)))
(epg-read-output context))
(epg-delete-output-file context)
(epg-reset context)))
recipients sign always-trust)
(epg-wait-for-completion context)
(if (epg-context-result-for context 'error)
- (error "Encrypt failed"))
+ (error "Encrypt failed: %S"
+ (epg-context-result-for context 'error)))
(unless cipher
(epg-read-output context)))
(unless cipher
recipients sign always-trust)
(epg-wait-for-completion context)
(if (epg-context-result-for context 'error)
- (error "Encrypt failed"))
+ (error "Encrypt failed: %S"
+ (epg-context-result-for context 'error)))
(epg-read-output context))
(epg-delete-output-file context)
(epg-reset context)))
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