;; Copyright (C) 1995, 1996, 2001 Free Software Foundation, Inc.
;; Author: Tomoji Kagatani <kagatani@rbc.ncl.omron.co.jp>
-;; Maintainer: Brian D. Carlstrom <bdc@ai.mit.edu>
+;; Maintainer: Simon Josefsson <simon@josefsson.org>
+;; w32 Maintainer: Brian D. Carlstrom <bdc@ai.mit.edu>
;; ESMTP support: Simon Leinen <simon@switch.ch>
;; Hacked by Mike Taylor, 11th October 1999 to add support for
;; automatically appending a domain to RCPT TO: addresses.
+;; AUTH=LOGIN support: Stephen Cranefield <scranefield@infoscience.otago.ac.nz>
;; Keywords: mail
;; This file is part of GNU Emacs.
;;(setq smtpmail-local-domain "YOUR DOMAIN NAME")
;;(setq smtpmail-sendto-domain "YOUR DOMAIN NAME")
;;(setq smtpmail-debug-info t) ; only to debug problems
+;;(setq smtpmail-auth-credentials
+;; '(("YOUR SMTP HOST" 25 "username" "password")))
+;;(setq smtpmail-starttls-credentials
+;; '(("YOUR SMTP HOST" 25 "~/.my_smtp_tls.key" "~/.my_smtp_tls.cert")))
;; To queue mail, set smtpmail-queue-mail to t and use
;; smtpmail-send-queued-mail to send.
+;; Modified by Stephen Cranefield <scranefield@infoscience.otago.ac.nz>,
+;; 22/6/99, to support SMTP Authentication by the AUTH=LOGIN mechanism.
+;; See http://help.netscape.com/products/server/messaging/3x/info/smtpauth.html
+;; Rewritten by Simon Josefsson to use same credential variable as AUTH
+;; support below.
+
+;; Modified by Simon Josefsson <jas@pdc.kth.se>, 22/2/99, to support SMTP
+;; Authentication by the AUTH mechanism.
+;; See http://www.ietf.org/rfc/rfc2554.txt
+
+;; Modified by Simon Josefsson <simon@josefsson.org>, 2000-10-07, to support
+;; STARTTLS. Requires external program
+;; ftp://ftp.opaopa.org/pub/elisp/starttls-*.tar.gz.
+;; See http://www.ietf.org/rfc/rfc2246.txt, http://www.ietf.org/rfc/rfc2487.txt
;;; Code:
(require 'sendmail)
(require 'time-stamp)
+(autoload 'starttls-open-stream "starttls")
+(autoload 'starttls-negotiate "starttls")
+(autoload 'mail-strip-quoted-names "mail-utils")
+(autoload 'rfc2104-hash "rfc2104")
;;;
(defgroup smtpmail nil
:group 'smtpmail)
(defcustom smtpmail-smtp-service 25
- "*SMTP service port number. smtp or 25 ."
- :type 'integer
+ "*SMTP service port number.
+The default value would be \"smtp\" or 25 ."
+ :type '(choice (integer :tag "Port") (string :tag "Service"))
:group 'smtpmail)
(defcustom smtpmail-local-domain nil
:group 'smtpmail)
(defcustom smtpmail-debug-info nil
- "*smtpmail debug info printout. messages and process buffer."
+ "Whether to print info in buffer *trace of SMTP session to <somewhere>*.
+See also `smtpmail-debug-verb' which determines if the SMTP protocol should
+be verbose as well."
+ :type 'boolean
+ :group 'smtpmail)
+
+(defcustom smtpmail-debug-verb nil
+ "Whether this library sends the SMTP VERB command or not.
+The commands enables verbose information from the SMTP server."
:type 'boolean
:group 'smtpmail)
:type 'directory
:group 'smtpmail)
+(defcustom smtpmail-auth-credentials '(("" 25 "" nil))
+ "Specify username and password for servers.
+It is a list of four-element lists that contain, in order,
+`servername' (a string), `port' (an integer), `user' (a string) and
+`password' (a string, or nil to query the user when needed).
+If you need to enter a `realm' too, add it to the user string, so that
+it looks like `user@realm'."
+ :type '(repeat (list (string :tag "Server")
+ (integer :tag "Port")
+ (string :tag "Username")
+ (choice (const :tag "Query when needed" nil)
+ (string :tag "Password"))))
+ :version "21.1"
+ :group 'smtpmail)
+
+(defcustom smtpmail-starttls-credentials '(("" 25 "" ""))
+ "Specify STARTTLS keys and certificates for servers.
+This is a list of four-element list with `servername' (a string),
+`port' (an integer), `key' (a filename) and `certificate' (a filename)."
+ :type '(repeat (list (string :tag "Server")
+ (integer :tag "Port")
+ (file :tag "Key")
+ (file :tag "Certificate")))
+ :version "21.1"
+ :group 'smtpmail)
+
(defcustom smtpmail-warn-about-unknown-extensions nil
"*If set, print warnings about unknown SMTP extensions.
This is mainly useful for development purposes, to learn about
(defvar smtpmail-queue-index (concat smtpmail-queue-dir
smtpmail-queue-index-file))
+(defconst smtpmail-auth-supported '(cram-md5 login)
+ "List of supported SMTP AUTH mechanisms.")
+
;;;
;;;
;;;
;;;###autoload
(defun smtpmail-send-it ()
- (require 'mail-utils)
(let ((errbuf (if mail-interactive
(generate-new-buffer " smtpmail errors")
0))
(concat (system-name) "." smtpmail-local-domain)
(system-name)))
+(defsubst smtpmail-cred-server (cred)
+ (nth 0 cred))
+
+(defsubst smtpmail-cred-port (cred)
+ (nth 1 cred))
+
+(defsubst smtpmail-cred-key (cred)
+ (nth 2 cred))
+
+(defsubst smtpmail-cred-user (cred)
+ (nth 2 cred))
+
+(defsubst smtpmail-cred-cert (cred)
+ (nth 3 cred))
+
+(defsubst smtpmail-cred-passwd (cred)
+ (nth 3 cred))
+
+(defun smtpmail-find-credentials (cred server port)
+ (catch 'done
+ (let ((l cred) el)
+ (while (setq el (pop l))
+ (when (and (equal server (smtpmail-cred-server el))
+ (equal port (smtpmail-cred-port el)))
+ (throw 'done el))))))
+
(defun smtpmail-maybe-append-domain (recipient)
(if (or (not smtpmail-sendto-domain)
(string-match "@" recipient))
recipient
(concat recipient "@" smtpmail-sendto-domain)))
+(defun smtpmail-intersection (list1 list2)
+ (let ((result nil))
+ (dolist (el2 list2)
+ (when (memq el2 list1)
+ (push el2 result)))
+ (nreverse result)))
+
+(defun smtpmail-open-stream (process-buffer host port)
+ (let ((cred (smtpmail-find-credentials
+ smtpmail-starttls-credentials host port)))
+ (if (null (and cred (condition-case ()
+ (call-process "starttls")
+ (error nil))))
+ ;; The normal case.
+ (open-network-stream "SMTP" process-buffer host port)
+ (let* ((cred-key (smtpmail-cred-key cred))
+ (cred-cert (smtpmail-cred-cert cred))
+ (starttls-extra-args
+ (when (and (stringp cred-key) (stringp cred-cert)
+ (file-regular-p
+ (setq cred-key (expand-file-name cred-key)))
+ (file-regular-p
+ (setq cred-cert (expand-file-name cred-cert))))
+ (list "--key-file" cred-key "--cert-file" cred-cert))))
+ (starttls-open-stream "SMTP" process-buffer host port)))))
+
+(defun smtpmail-try-auth-methods (process supported-extensions host port)
+ (let* ((mechs (cdr-safe (assoc 'auth supported-extensions)))
+ (mech (car (smtpmail-intersection smtpmail-auth-supported mechs)))
+ (cred (smtpmail-find-credentials smtpmail-auth-credentials host port))
+ (passwd (when cred
+ (or (smtpmail-cred-passwd cred)
+ (read-passwd
+ (format "SMTP password for %s:%s: "
+ (smtpmail-cred-server cred)
+ (smtpmail-cred-port cred))))))
+ ret)
+ (when cred
+ (cond
+ ((eq mech 'cram-md5)
+ (smtpmail-send-command process (format "AUTH %s" mech))
+ (if (or (null (car (setq ret (smtpmail-read-response process))))
+ (not (integerp (car ret)))
+ (>= (car ret) 400))
+ (throw 'done nil))
+ (when (eq (car ret) 334)
+ (let* ((challenge (substring (cadr ret) 4))
+ (decoded (base64-decode-string challenge))
+ (hash (rfc2104-hash 'md5 64 16 passwd decoded))
+ (response (concat (smtpmail-cred-user cred) " " hash))
+ (encoded (base64-encode-string response)))
+ (smtpmail-send-command process (format "%s" encoded))
+ (if (or (null (car (setq ret (smtpmail-read-response process))))
+ (not (integerp (car ret)))
+ (>= (car ret) 400))
+ (throw 'done nil)))))
+ ((eq mech 'login)
+ (smtpmail-send-command process "AUTH LOGIN")
+ (if (or (null (car (setq ret (smtpmail-read-response process))))
+ (not (integerp (car ret)))
+ (>= (car ret) 400))
+ (throw 'done nil))
+ (smtpmail-send-command
+ process (base64-encode-string (smtpmail-cred-user cred)))
+ (if (or (null (car (setq ret (smtpmail-read-response process))))
+ (not (integerp (car ret)))
+ (>= (car ret) 400))
+ (throw 'done nil))
+ (smtpmail-send-command process (base64-encode-string passwd))
+ (if (or (null (car (setq ret (smtpmail-read-response process))))
+ (not (integerp (car ret)))
+ (>= (car ret) 400))
+ (throw 'done nil)))
+ (t
+ (error "Mechanism %s not implemented" mech)))
+ ;; Remember the password.
+ (unless (smtpmail-cred-passwd cred)
+ (setcar (cdr (cdr (cdr cred))) passwd)))))
+
(defun smtpmail-via-smtp (recipient smtpmail-text-buffer)
(let ((process nil)
(host (or smtpmail-smtp-server
(erase-buffer))
;; open the connection to the server
- (setq process (open-network-stream "SMTP" process-buffer host port))
+ (setq process (smtpmail-open-stream process-buffer host port))
(and (null process) (throw 'done nil))
;; set the send-filter
(throw 'done nil)
)
+ (let ((do-ehlo t)
+ (do-starttls t))
+ (while do-ehlo
;; EHLO
(smtpmail-send-command process (format "EHLO %s" (smtpmail-fqdn)))
- (if (or (null (car (setq response-code (smtpmail-read-response process))))
+ (if (or (null (car (setq response-code
+ (smtpmail-read-response process))))
(not (integerp (car response-code)))
(>= (car response-code) 400))
(progn
;; HELO
- (smtpmail-send-command process (format "HELO %s" (smtpmail-fqdn)))
+ (smtpmail-send-command
+ process (format "HELO %s" (smtpmail-fqdn)))
- (if (or (null (car (setq response-code (smtpmail-read-response process))))
+ (if (or (null (car (setq response-code
+ (smtpmail-read-response process))))
(not (integerp (car response-code)))
(>= (car response-code) 400))
(throw 'done nil)))
- (let ((extension-lines (cdr (cdr response-code))))
- (while extension-lines
- (let ((name (intern (downcase (car (split-string (substring (car extension-lines) 4) "[ ]"))))))
+ (dolist (line (cdr (cdr response-code)))
+ (let ((name (mapcar (lambda (s) (intern (downcase s)))
+ (split-string (substring line 4) "[ ]"))))
+ (and (eq (length name) 1)
+ (setq name (car name)))
(and name
- (cond ((memq name '(verb xvrb 8bitmime onex xone
+ (cond ((memq (if (consp name) (car name) name)
+ '(verb xvrb 8bitmime onex xone
expn size dsn etrn
- help xusr))
+ enhancedstatuscodes
+ help xusr
+ auth=login auth starttls))
(setq supported-extensions
(cons name supported-extensions)))
(smtpmail-warn-about-unknown-extensions
- (message "Unknown extension %s" name)))))
- (setq extension-lines (cdr extension-lines)))))
+ (message "Unknown extension %s" name)))))))
+
+ (if (and do-starttls
+ (smtpmail-find-credentials smtpmail-starttls-credentials host port)
+ (member 'starttls supported-extensions)
+ (process-id process))
+ (progn
+ (smtpmail-send-command process (format "STARTTLS"))
+ (if (or (null (car (setq response-code (smtpmail-read-response process))))
+ (not (integerp (car response-code)))
+ (>= (car response-code) 400))
+ (throw 'done nil))
+ (starttls-negotiate process)
+ (setq do-starttls nil))
+ (setq do-ehlo nil))))
+
+ (smtpmail-try-auth-methods process supported-extensions host port)
(if (or (member 'onex supported-extensions)
(member 'xone supported-extensions))
(>= (car response-code) 400))
(throw 'done nil))))
- (if (and smtpmail-debug-info
+ (if (and smtpmail-debug-verb
(or (member 'verb supported-extensions)
(member 'xvrb supported-extensions)))
(progn
;; MAIL FROM: <sender>
(let ((size-part
- (if (member 'size supported-extensions)
+ (if (or (member 'size supported-extensions)
+ (assoc 'size supported-extensions))
(format " SIZE=%d"
(save-excursion
(set-buffer smtpmail-text-buffer)
(defun smtpmail-deduce-address-list (smtpmail-text-buffer header-start header-end)
"Get address list suitable for smtp RCPT TO: <address>."
- (require 'mail-utils) ;; pick up mail-strip-quoted-names
-
(unwind-protect
(save-excursion
(set-buffer smtpmail-address-buffer) (erase-buffer)
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