Synch with Oort Gnus.
[elisp/gnus.git-] / lisp / mml2015.el
index b9b5255..ff6c04d 100644 (file)
@@ -1,5 +1,5 @@
 ;;; mml2015.el --- MIME Security with Pretty Good Privacy (PGP)
-;; Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+;; Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
 
 ;; Author: Shenghuo Zhu <zsh@cs.rochester.edu>
 ;; Keywords: PGP MIME MML
@@ -23,6 +23,9 @@
 
 ;;; Commentary:
 
+;; RFC 2015 is updated by RFC 3156, this file should be compatible
+;; with both.
+
 ;;; Code:
 
 (eval-when-compile (require 'cl))
@@ -65,7 +68,7 @@
   '((trust-undefined . nil)
     (trust-none      . nil)
     (trust-marginal  . t)
-    (trust-fully     . t)
+    (trust-full      . t)
     (trust-ultimate  . t))
   "Trust boundaries for a signer's GnuPG key.
 This alist contains pairs of the form (trust-symbol . boolean), with
@@ -124,7 +127,11 @@ by you.")
        (setq handles (mm-dissect-buffer t)))
       (mm-destroy-parts handle)
       (mm-set-handle-multipart-parameter
-       mm-security-handle 'gnus-info "OK")
+       mm-security-handle 'gnus-info
+       (concat "OK"
+              (let ((sig (with-current-buffer mml2015-result-buffer
+                           (mml2015-gpg-extract-signature-details))))
+                (concat ", Signer: " sig))))
       (if (listp (car handles))
          handles
        (list handles)))))
@@ -150,7 +157,8 @@ by you.")
 
 (defun mml2015-fix-micalg (alg)
   (and alg
-       (upcase (if (string-match "^pgp-" alg)
+       ;; Mutt/1.2.5i has seen sending micalg=php-sha1
+       (upcase (if (string-match "^p[gh]p-" alg)
                   (substring alg (match-end 0))
                 alg))))
 
@@ -302,9 +310,10 @@ by you.")
     (insert (format "--%s--\n" boundary))
     (goto-char (point-max))))
 
-(defun mml2015-mailcrypt-encrypt (cont)
+(defun mml2015-mailcrypt-encrypt (cont &optional sign)
   (let ((mc-pgp-always-sign
         (or mc-pgp-always-sign
+            sign
             (eq t (or (message-options-get 'message-sign-encrypt)
                       (message-options-set
                        'message-sign-encrypt
@@ -344,6 +353,7 @@ by you.")
   (autoload 'gpg-verify-cleartext "gpg")
   (autoload 'gpg-sign-detached "gpg")
   (autoload 'gpg-sign-encrypt "gpg")
+  (autoload 'gpg-encrypt "gpg")
   (autoload 'gpg-passphrase-read "gpg"))
 
 (defun mml2015-gpg-passphrase ()
@@ -362,7 +372,10 @@ by you.")
               (buffer-string)))
            (set-buffer cipher)
            (erase-buffer)
-           (insert-buffer plain)))
+           (insert-buffer plain)
+           (goto-char (point-min))
+           (while (search-forward "\r\n" nil t)
+             (replace-match "\n" t t))))
        '(t)
       ;; Some wrong with the return value, check plain text buffer.
       (if (> (point-max) (point-min))
@@ -384,9 +397,9 @@ by you.")
 
 (defun mml2015-gpg-pretty-print-fpr (fingerprint)
   (let* ((result "")
-         (fpr-length (string-width fingerprint))
-         (n-slice 0)
-         slice)
+        (fpr-length (string-width fingerprint))
+        (n-slice 0)
+        slice)
     (setq fingerprint (string-to-list fingerprint))
     (while fingerprint
       (setq fpr-length (- fpr-length 4))
@@ -394,35 +407,42 @@ by you.")
       (setq fingerprint (nthcdr 4 fingerprint))
       (setq n-slice (1+ n-slice))
       (setq result
-            (concat
-             result
-             (case n-slice
-               (1  slice)
-               (otherwise (concat " " slice))))))
+           (concat
+            result
+            (case n-slice
+              (1  slice)
+              (otherwise (concat " " slice))))))
     result))
-          
+
 (defun mml2015-gpg-extract-signature-details ()
   (goto-char (point-min))
   (if (boundp 'gpg-unabbrev-trust-alist)
-      (let* ((signer (and (re-search-forward
-                          "^\\[GNUPG:\\] GOODSIG [0-9A-Za-z]* \\(.*\\)$"
+      (let* ((expired (re-search-forward
+                      "^\\[GNUPG:\\] SIGEXPIRED$"
+                      nil t))
+            (signer (and (re-search-forward
+                          "^\\[GNUPG:\\] GOODSIG \\([0-9A-Za-z]*\\) \\(.*\\)$"
                           nil t)
-                         (match-string 1)))
-         (fprint (and (re-search-forward
-                      "^\\[GNUPG:\\] VALIDSIG \\([0-9a-zA-Z]*\\) "
+                         (cons (match-string 1) (match-string 2))))
+            (fprint (and (re-search-forward
+                          "^\\[GNUPG:\\] VALIDSIG \\([0-9a-zA-Z]*\\) "
                       nil t)
-                      (match-string 1)))
-         (trust  (and (re-search-forward "^\\[GNUPG:\\] \\(TRUST_.*\\)$" nil t)
-                      (match-string 1)))
-         (trust-good-enough-p
-         (cdr (assoc (cdr (assoc trust gpg-unabbrev-trust-alist))
+                         (match-string 1)))
+            (trust  (and (re-search-forward "^\\[GNUPG:\\] \\(TRUST_.*\\)$" nil t)
+                         (match-string 1)))
+            (trust-good-enough-p
+             (cdr (assoc (cdr (assoc trust gpg-unabbrev-trust-alist))
                      mml2015-trust-boundaries-alist))))
-       (if (and signer trust fprint)
-           (concat signer
-                   (unless trust-good-enough-p
-                     (concat "\nUntrusted, Fingerprint: "
-                             (mml2015-gpg-pretty-print-fpr fprint))))
-         (error "From unknown user")))
+       (cond ((and signer fprint)
+              (concat (cdr signer)
+                      (unless trust-good-enough-p
+                        (concat "\nUntrusted, Fingerprint: "
+                                (mml2015-gpg-pretty-print-fpr fprint)))
+                      (when expired
+                        (format "\nWARNING: Signature from expired key (%s)"
+                                (car signer)))))
+             (t
+              "From unknown user")))
     (if (re-search-forward "^gpg: Good signature from \"\\(.*\\)\"$" nil t)
        (match-string 1)
       "From unknown user")))
@@ -441,6 +461,16 @@ by you.")
       (with-temp-buffer
        (setq message (current-buffer))
        (insert part)
+       ;; Convert <LF> to <CR><LF> in verify mode.  Sign and
+       ;; clearsign use --textmode. The conversion is not necessary.
+       ;; In clearverify, the conversion is not necessary either.
+       (goto-char (point-min))
+       (end-of-line)
+       (while (not (eobp))
+         (unless (eq (char-before) ?\r)
+           (insert "\r"))
+         (forward-line)
+         (end-of-line))
        (with-temp-buffer
          (setq signature (current-buffer))
          (unless (setq part (mm-find-part-by-type
@@ -459,20 +489,20 @@ by you.")
                    (error
                     (mm-set-handle-multipart-parameter
                      mm-security-handle 'gnus-details (mml2015-format-error err))
-                     (mm-set-handle-multipart-parameter
-                      mm-security-handle 'gnus-info "Error.")
-                     (setq info-is-set-p t)
+                    (mm-set-handle-multipart-parameter
+                     mm-security-handle 'gnus-info "Error.")
+                    (setq info-is-set-p t)
                     nil)
                    (quit
                     (mm-set-handle-multipart-parameter
                      mm-security-handle 'gnus-details "Quit.")
-                     (mm-set-handle-multipart-parameter
-                      mm-security-handle 'gnus-info "Quit.")
-                     (setq info-is-set-p t)
+                    (mm-set-handle-multipart-parameter
+                     mm-security-handle 'gnus-info "Quit.")
+                    (setq info-is-set-p t)
                     nil))
-            (unless info-is-set-p
-              (mm-set-handle-multipart-parameter
-               mm-security-handle 'gnus-info "Failed"))
+           (unless info-is-set-p
+             (mm-set-handle-multipart-parameter
+              mm-security-handle 'gnus-info "Failed"))
            (throw 'error handle)))
        (mm-set-handle-multipart-parameter
         mm-security-handle 'gnus-info
@@ -537,28 +567,42 @@ by you.")
       (insert (format "--%s--\n" boundary))
       (goto-char (point-max)))))
 
-(defun mml2015-gpg-encrypt (cont)
+(defun mml2015-gpg-encrypt (cont &optional sign)
   (let ((boundary
         (funcall mml-boundary-function (incf mml-multipart-number)))
        (text (current-buffer))
        cipher)
     (mm-with-unibyte-current-buffer-mule4
       (with-temp-buffer
-       (unless (gpg-sign-encrypt
-                text (setq cipher (current-buffer))
-                mml2015-result-buffer
-                (split-string
-                 (or
-                  (message-options-get 'message-recipients)
-                  (message-options-set 'message-recipients
-                                       (read-string "Recipients: ")))
-                 "[ \f\t\n\r\v,]+")
-                nil
-                (message-options-get 'message-sender)
-                t t) ; armor & textmode
-         (unless (> (point-max) (point-min))
-           (pop-to-buffer mml2015-result-buffer)
-           (error "Encrypt error")))
+       ;; set up a function to call the correct gpg encrypt routine
+       ;; with the right arguments. (FIXME: this should be done
+       ;; differently.)
+       (flet ((gpg-encrypt-func 
+                (sign plaintext ciphertext result recipients &optional
+                      passphrase sign-with-key armor textmode)
+                (if sign
+                    (gpg-sign-encrypt
+                     plaintext ciphertext result recipients passphrase
+                     sign-with-key armor textmode)
+                  (gpg-encrypt
+                   plaintext ciphertext result recipients passphrase
+                   armor textmode))))
+         (unless (gpg-encrypt-func
+                   sign ; passed in when using signencrypt
+                   text (setq cipher (current-buffer))
+                   mml2015-result-buffer
+                   (split-string
+                    (or
+                     (message-options-get 'message-recipients)
+                     (message-options-set 'message-recipients
+                                          (read-string "Recipients: ")))
+                    "[ \f\t\n\r\v,]+")
+                   nil
+                   (message-options-get 'message-sender)
+                   t t) ; armor & textmode
+           (unless (> (point-max) (point-min))
+             (pop-to-buffer mml2015-result-buffer)
+             (error "Encrypt error"))))
        (goto-char (point-min))
        (while (re-search-forward "\r+$" nil t)
          (replace-match "" t t))
@@ -619,11 +663,11 @@ by you.")
   mml2015-use)
 
 ;;;###autoload
-(defun mml2015-encrypt (cont)
+(defun mml2015-encrypt (cont &optional sign)
   (mml2015-clean-buffer)
   (let ((func (nth 2 (assq mml2015-use mml2015-function-alist))))
     (if func
-       (funcall func cont)
+       (funcall func cont sign)
       (error "Cannot find encrypt function"))))
 
 ;;;###autoload