Commit 9056f1c9 authored by Richard M. Stallman's avatar Richard M. Stallman
Browse files

(smtpmail-cred-server, smtpmail-cred-port, smtpmail-cred-key)

(smtpmail-cred-user, smtpmail-cred-cert, smtpmail-cred-passwd):
Defsubst instead of defmacro.
(smtpmail-intersection): Return value in reverse order.
(smtpmail-open-stream): Use stringp instead of string-to-list.
(smtpmail-open-stream, smtpmail-try-auth-methods): New functions,
separated from smtpmail-via-smtp.

(top level): Autoload starttls, mail-utils and rfc2104.
(smtpmail-smtp-service): Doc fix.  :type fix.
(smtpmail-debug-info): Doc fix.
(smtpmail-debug-verb, smtpmail-auth-credentials)
(smtpmail-starttls-credentials, smtpmail-auth-supported): New variables.
(smtpmail-deduce-address-list, smtpmail-send-it): Don't require
mail-utils (it is autoloaded).
(smtpmail-cred-server, smtpmail-cred-port, smtpmail-cred-key)
(smtpmail-cred-user, smtpmail-cred-cert, smtpmail-cred-passwd)
(smtpmail-find-credentials, smtpmail-intersection): New utility funs.
(smtpmail-via-smtp): Support STARTTLS, if binary is installed.
(smtpmail-via-smtp): Support AUTH.
(smtpmail-via-smtp): Use `smtpmail-debug-verb' to control VERB.
parent 843f91fd
......@@ -3,10 +3,12 @@
;; 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.
......@@ -38,15 +40,37 @@
;;(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
......@@ -66,8 +90,9 @@
: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
......@@ -94,7 +119,15 @@ buffer includes an exchange like:
: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)
......@@ -115,6 +148,32 @@ and sent with `smtpmail-send-queued-mail'."
: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
......@@ -136,13 +195,15 @@ This is relative to `smtpmail-queue-dir'.")
(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))
......@@ -332,12 +393,117 @@ This is relative to `smtpmail-queue-dir'.")
(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
......@@ -359,7 +525,7 @@ This is relative to `smtpmail-queue-dir'.")
(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
......@@ -378,32 +544,58 @@ This is relative to `smtpmail-queue-dir'.")
(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))
......@@ -414,7 +606,7 @@ This is relative to `smtpmail-queue-dir'.")
(>= (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
......@@ -434,7 +626,8 @@ This is relative to `smtpmail-queue-dir'.")
;; 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)
......@@ -650,8 +843,6 @@ This is relative to `smtpmail-queue-dir'.")
(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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