;;; smtpmail.el --- simple SMTP protocol (RFC 821) for sending mail ;; Copyright (C) 1995, 1996 Free Software Foundation, Inc. ;; Author: Tomoji Kagatani ;; Maintainer: Brian D. Carlstrom ;; ESMTP support: Simon Leinen ;; Keywords: mail ;; This file is part of GNU Emacs. ;; GNU Emacs is free software; you can redistribute it and/or modify ;; it under the terms of the GNU General Public License as published by ;; the Free Software Foundation; either version 2, or (at your option) ;; any later version. ;; GNU Emacs is distributed in the hope that it will be useful, ;; but WITHOUT ANY WARRANTY; without even the implied warranty of ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ;; GNU General Public License for more details. ;; You should have received a copy of the GNU General Public License ;; along with GNU Emacs; see the file COPYING. If not, write to the ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, ;; Boston, MA 02111-1307, USA. ;;; Commentary: ;; Send Mail to smtp host from smtpmail temp buffer. ;; Please add these lines in your .emacs(_emacs). ;; ;;(setq send-mail-function 'smtpmail-send-it) ;;(setq smtpmail-default-smtp-server "YOUR SMTP HOST") ;;(setq smtpmail-smtp-service "smtp") ;;(setq smtpmail-local-domain "YOUR DOMAIN NAME") ;;(setq smtpmail-debug-info t) ;;(load-library "smtpmail") ;;(setq smtpmail-code-conv-from nil) ;;(setq user-full-name "YOUR NAME HERE") ;; To queue mail, set smtpmail-queue-mail to t and use ;; smtpmail-send-queued-mail to send. ;;; Code: (require 'sendmail) (require 'time-stamp) ;;; (defgroup smtpmail nil "SMTP protocol for sending mail." :group 'mail) (defcustom smtpmail-default-smtp-server nil "*Specify default SMTP server." :type '(choice (const nil) string) :group 'smtpmail) (defcustom smtpmail-smtp-server (or (getenv "SMTPSERVER") smtpmail-default-smtp-server) "*The name of the host running SMTP server." :type '(choice (const nil) string) :group 'smtpmail) (defcustom smtpmail-smtp-service 25 "*SMTP service port number. smtp or 25 ." :type 'integer :group 'smtpmail) (defcustom smtpmail-local-domain nil "*Local domain name without a host name. If the function (system-name) returns the full internet address, don't define this value." :type '(choice (const nil) string) :group 'smtpmail) (defcustom smtpmail-debug-info nil "*smtpmail debug info printout. messages and process buffer." :type 'boolean :group 'smtpmail) (defcustom smtpmail-code-conv-from nil ;; *junet* "*smtpmail code convert from this code to *internal*..for tiny-mime.." :type 'boolean :group 'smtpmail) (defcustom smtpmail-queue-mail nil "*Specify if mail is queued (if t) or sent immediately (if nil). If queued, it is stored in the directory `smtpmail-queue-dir' and sent with `smtpmail-send-queued-mail'." :type 'boolean :group 'smtpmail) (defcustom smtpmail-queue-dir "~/Mail/queued-mail/" "*Directory where `smtpmail.el' stores queued mail." :type 'directory :group 'smtpmail) (defvar smtpmail-queue-index-file "index" "File name of queued mail index, This is relative to `smtpmail-queue-dir'.") (defvar smtpmail-queue-index (concat smtpmail-queue-dir smtpmail-queue-index-file)) ;;; ;;; ;;; (defun smtpmail-send-it () (require 'mail-utils) (let ((errbuf (if mail-interactive (generate-new-buffer " smtpmail errors") 0)) (tembuf (generate-new-buffer " smtpmail temp")) (case-fold-search nil) delimline (mailbuf (current-buffer))) (unwind-protect (save-excursion (set-buffer tembuf) (erase-buffer) (insert-buffer-substring mailbuf) (goto-char (point-max)) ;; require one newline at the end. (or (= (preceding-char) ?\n) (insert ?\n)) ;; Change header-delimiter to be what sendmail expects. (mail-sendmail-undelimit-header) (setq delimline (point-marker)) ;; (sendmail-synch-aliases) (if mail-aliases (expand-mail-aliases (point-min) delimline)) (goto-char (point-min)) ;; ignore any blank lines in the header (while (and (re-search-forward "\n\n\n*" delimline t) (< (point) delimline)) (replace-match "\n")) (let ((case-fold-search t)) ;; We used to process Resent-... headers here, ;; but it was not done properly, and the job ;; is done correctly in smtpmail-deduce-address-list. ;; Don't send out a blank subject line (goto-char (point-min)) (if (re-search-forward "^Subject:\\([ \t]*\n\\)+\\b" delimline t) (replace-match "") ;; This one matches a Subject just before the header delimiter. (if (and (re-search-forward "^Subject:\\([ \t]*\n\\)+" delimline t) (= (match-end 0) delimline)) (replace-match ""))) ;; Put the "From:" field in unless for some odd reason ;; they put one in themselves. (goto-char (point-min)) (if (not (re-search-forward "^From:" delimline t)) (let* ((login user-mail-address) (fullname (user-full-name))) (cond ((eq mail-from-style 'angles) (insert "From: " fullname) (let ((fullname-start (+ (point-min) 6)) (fullname-end (point-marker))) (goto-char fullname-start) ;; Look for a character that cannot appear unquoted ;; according to RFC 822. (if (re-search-forward "[^- !#-'*+/-9=?A-Z^-~]" fullname-end 1) (progn ;; Quote fullname, escaping specials. (goto-char fullname-start) (insert "\"") (while (re-search-forward "[\"\\]" fullname-end 1) (replace-match "\\\\\\&" t)) (insert "\"")))) (insert " <" login ">\n")) ((eq mail-from-style 'parens) (insert "From: " login " (") (let ((fullname-start (point))) (insert fullname) (let ((fullname-end (point-marker))) (goto-char fullname-start) ;; RFC 822 says \ and nonmatching parentheses ;; must be escaped in comments. ;; Escape every instance of ()\ ... (while (re-search-forward "[()\\]" fullname-end 1) (replace-match "\\\\\\&" t)) ;; ... then undo escaping of matching parentheses, ;; including matching nested parentheses. (goto-char fullname-start) (while (re-search-forward "\\(\\=\\|[^\\]\\(\\\\\\\\\\)*\\)\\\\(\\(\\([^\\]\\|\\\\\\\\\\)*\\)\\\\)" fullname-end 1) (replace-match "\\1(\\3)" t) (goto-char fullname-start)))) (insert ")\n")) ((null mail-from-style) (insert "From: " login "\n"))))) ;; Insert an extra newline if we need it to work around ;; Sun's bug that swallows newlines. (goto-char (1+ delimline)) (if (eval mail-mailer-swallows-blank-line) (newline)) ;; Find and handle any FCC fields. (goto-char (point-min)) (if (re-search-forward "^FCC:" delimline t) (mail-do-fcc delimline)) (if mail-interactive (save-excursion (set-buffer errbuf) (erase-buffer)))) ;; ;; ;; (setq smtpmail-address-buffer (generate-new-buffer "*smtp-mail*")) (setq smtpmail-recipient-address-list (smtpmail-deduce-address-list tembuf (point-min) delimline)) (kill-buffer smtpmail-address-buffer) (smtpmail-do-bcc delimline) ; Send or queue (if (not smtpmail-queue-mail) (if (not (null smtpmail-recipient-address-list)) (if (not (smtpmail-via-smtp smtpmail-recipient-address-list tembuf)) (error "Sending failed; SMTP protocol error")) (error "Sending failed; no recipients")) (let* ((file-data (concat smtpmail-queue-dir (concat (time-stamp-yyyy-mm-dd) "_" (time-stamp-hh:mm:ss)))) (file-elisp (concat file-data ".el")) (buffer-data (create-file-buffer file-data)) (buffer-elisp (create-file-buffer file-elisp)) (buffer-scratch "*queue-mail*")) (save-excursion (set-buffer buffer-data) (erase-buffer) (insert-buffer tembuf) (write-file file-data) (set-buffer buffer-elisp) (erase-buffer) (insert (concat "(setq smtpmail-recipient-address-list '" (prin1-to-string smtpmail-recipient-address-list) ")\n")) (write-file file-elisp) (set-buffer (generate-new-buffer buffer-scratch)) (insert (concat file-data "\n")) (append-to-file (point-min) (point-max) smtpmail-queue-index) ) (kill-buffer buffer-scratch) (kill-buffer buffer-data) (kill-buffer buffer-elisp)))) (kill-buffer tembuf) (if (bufferp errbuf) (kill-buffer errbuf))))) (defun smtpmail-send-queued-mail () "Send mail that was queued as a result of setting `smtpmail-queue-mail'." (interactive) ;;; Get index, get first mail, send it, get second mail, etc... (let ((buffer-index (find-file-noselect smtpmail-queue-index)) (file-msg "") (tembuf nil)) (save-excursion (set-buffer buffer-index) (beginning-of-buffer) (while (not (eobp)) (setq file-msg (buffer-substring (point) (save-excursion (end-of-line) (point)))) (load file-msg) (setq tembuf (find-file-noselect file-msg)) (if (not (null smtpmail-recipient-address-list)) (if (not (smtpmail-via-smtp smtpmail-recipient-address-list tembuf)) (error "Sending failed; SMTP protocol error")) (error "Sending failed; no recipients")) (delete-file file-msg) (delete-file (concat file-msg ".el")) (kill-buffer tembuf) (kill-line 1)) (set-buffer buffer-index) (save-buffer smtpmail-queue-index) (kill-buffer buffer-index) ))) ;(defun smtpmail-via-smtp (host,port,sender,destination,smtpmail-text-buffer) (defun smtpmail-fqdn () (if smtpmail-local-domain (concat (system-name) "." smtpmail-local-domain) (system-name))) (defun smtpmail-via-smtp (recipient smtpmail-text-buffer) (let ((process nil) (host smtpmail-smtp-server) (port smtpmail-smtp-service) response-code greeting process-buffer (supported-extensions '())) (unwind-protect (catch 'done ;; get or create the trace buffer (setq process-buffer (get-buffer-create (format "*trace of SMTP session to %s*" host))) ;; clear the trace buffer of old output (save-excursion (set-buffer process-buffer) (erase-buffer)) ;; open the connection to the server (setq process (open-network-stream "SMTP" process-buffer host port)) (and (null process) (throw 'done nil)) ;; set the send-filter (set-process-filter process 'smtpmail-process-filter) (save-excursion (set-buffer process-buffer) (set-buffer-process-coding-system 'raw-text-unix 'raw-text-unix) (make-local-variable 'smtpmail-read-point) (setq smtpmail-read-point (point-min)) (if (or (null (car (setq greeting (smtpmail-read-response process)))) (not (integerp (car greeting))) (>= (car greeting) 400)) (throw 'done nil) ) ;; EHLO (smtpmail-send-command process (format "EHLO %s" (smtpmail-fqdn))) (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))) (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) "[ ]")))))) (and name (cond ((memq name '(verb xvrb 8bitmime onex xone expn size dsn etrn help xusr)) (setq supported-extensions (cons name supported-extensions))) (t (message "unknown extension %s" name))))) (setq extension-lines (cdr extension-lines))))) (if (or (member 'onex supported-extensions) (member 'xone supported-extensions)) (progn (smtpmail-send-command process (format "ONEX")) (if (or (null (car (setq response-code (smtpmail-read-response process)))) (not (integerp (car response-code))) (>= (car response-code) 400)) (throw 'done nil)))) (if (and smtpmail-debug-info (or (member 'verb supported-extensions) (member 'xvrb supported-extensions))) (progn (smtpmail-send-command process (format "VERB")) (if (or (null (car (setq response-code (smtpmail-read-response process)))) (not (integerp (car response-code))) (>= (car response-code) 400)) (throw 'done nil)))) (if (member 'xusr supported-extensions) (progn (smtpmail-send-command process (format "XUSR")) (if (or (null (car (setq response-code (smtpmail-read-response process)))) (not (integerp (car response-code))) (>= (car response-code) 400)) (throw 'done nil)))) ;; MAIL FROM: (let ((size-part (if (member 'size supported-extensions) (format " SIZE=%d" (save-excursion (set-buffer smtpmail-text-buffer) ;; size estimate: (+ (- (point-max) (point-min)) ;; Add one byte for each change-of-line ;; because or CR-LF representation: (count-lines (point-min) (point-max)) ;; For some reason, an empty line is ;; added to the message. Maybe this ;; is a bug, but it can't hurt to add ;; those two bytes anyway: 2))) "")) (body-part (if (member '8bitmime supported-extensions) ;; FIXME: ;; Code should be added here that transforms ;; the contents of the message buffer into ;; something the receiving SMTP can handle. ;; For a receiver that supports 8BITMIME, this ;; may mean converting BINARY to BASE64, or ;; adding Content-Transfer-Encoding and the ;; other MIME headers. The code should also ;; return an indication of what encoding the ;; message buffer is now, i.e. ASCII or ;; 8BITMIME. (if nil " BODY=8BITMIME" "") ""))) ; (smtpmail-send-command process (format "MAIL FROM:%s@%s" (user-login-name) (smtpmail-fqdn))) (smtpmail-send-command process (format "MAIL FROM: <%s>%s%s" user-mail-address size-part body-part)) (if (or (null (car (setq response-code (smtpmail-read-response process)))) (not (integerp (car response-code))) (>= (car response-code) 400)) (throw 'done nil) )) ;; RCPT TO: (let ((n 0)) (while (not (null (nth n recipient))) (smtpmail-send-command process (format "RCPT TO: <%s>" (nth n recipient))) (setq n (1+ n)) (setq response-code (smtpmail-read-response process)) (if (or (null (car response-code)) (not (integerp (car response-code))) (>= (car response-code) 400)) (throw 'done nil) ) )) ;; DATA (smtpmail-send-command process "DATA") (if (or (null (car (setq response-code (smtpmail-read-response process)))) (not (integerp (car response-code))) (>= (car response-code) 400)) (throw 'done nil) ) ;; Mail contents (smtpmail-send-data process smtpmail-text-buffer) ;;DATA end "." (smtpmail-send-command process ".") (if (or (null (car (setq response-code (smtpmail-read-response process)))) (not (integerp (car response-code))) (>= (car response-code) 400)) (throw 'done nil) ) ;;QUIT ; (smtpmail-send-command process "QUIT") ; (and (null (car (smtpmail-read-response process))) ; (throw 'done nil)) t )) (if process (save-excursion (set-buffer (process-buffer process)) (smtpmail-send-command process "QUIT") (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) ; ) (delete-process process)))))) (defun smtpmail-process-filter (process output) (save-excursion (set-buffer (process-buffer process)) (goto-char (point-max)) (insert output))) (defun smtpmail-read-response (process) (let ((case-fold-search nil) (response-strings nil) (response-continue t) (return-value '(nil ())) match-end) (while response-continue (goto-char smtpmail-read-point) (while (not (search-forward "\r\n" nil t)) (accept-process-output process) (goto-char smtpmail-read-point)) (setq match-end (point)) (setq response-strings (cons (buffer-substring smtpmail-read-point (- match-end 2)) response-strings)) (goto-char smtpmail-read-point) (if (looking-at "[0-9]+ ") (let ((begin (match-beginning 0)) (end (match-end 0))) (if smtpmail-debug-info (message "%s" (car response-strings))) (setq smtpmail-read-point match-end) ;; ignore lines that start with "0" (if (looking-at "0[0-9]+ ") nil (setq response-continue nil) (setq return-value (cons (string-to-int (buffer-substring begin end)) (nreverse response-strings))))) (if (looking-at "[0-9]+-") (progn (if smtpmail-debug-info (message "%s" (car response-strings))) (setq smtpmail-read-point match-end) (setq response-continue t)) (progn (setq smtpmail-read-point match-end) (setq response-continue nil) (setq return-value (cons nil (nreverse response-strings))) ) ))) (setq smtpmail-read-point match-end) return-value)) (defun smtpmail-send-command (process command) (goto-char (point-max)) (if (= (aref command 0) ?P) (insert "PASS \r\n") (insert command "\r\n")) (setq smtpmail-read-point (point)) (process-send-string process command) (process-send-string process "\r\n")) (defun smtpmail-send-data-1 (process data) (goto-char (point-max)) (if (not (null smtpmail-code-conv-from)) (setq data (code-convert-string data smtpmail-code-conv-from *internal*))) (if smtpmail-debug-info (insert data "\r\n")) (setq smtpmail-read-point (point)) ;; Escape "." at start of a line (if (eq (string-to-char data) ?.) (process-send-string process ".")) (process-send-string process data) (process-send-string process "\r\n") ) (defun smtpmail-send-data (process buffer) (let ((data-continue t) (sending-data nil) this-line this-line-end) (save-excursion (set-buffer buffer) (goto-char (point-min))) (while data-continue (save-excursion (set-buffer buffer) (beginning-of-line) (setq this-line (point)) (end-of-line) (setq this-line-end (point)) (setq sending-data nil) (setq sending-data (buffer-substring this-line this-line-end)) (if (/= (forward-line 1) 0) (setq data-continue nil))) (smtpmail-send-data-1 process sending-data) ) ) ) (defun smtpmail-deduce-address-list (smtpmail-text-buffer header-start header-end) "Get address list suitable for smtp RCPT TO:
." (require 'mail-utils) ;; pick up mail-strip-quoted-names (let ((case-fold-search t) (simple-address-list "") this-line this-line-end addr-regexp) (unwind-protect (save-excursion ;; (set-buffer smtpmail-address-buffer) (erase-buffer) (insert-buffer-substring smtpmail-text-buffer header-start header-end) (goto-char (point-min)) ;; RESENT-* fields should stop processing of regular fields. (save-excursion (if (re-search-forward "^Resent-\\(to\\|cc\\|bcc\\):" header-end t) (setq addr-regexp "^Resent-\\(to\\|cc\\|bcc\\):") (setq addr-regexp "^\\(To:\\|Cc:\\|Bcc:\\)"))) (while (re-search-forward addr-regexp header-end t) (replace-match "") (setq this-line (match-beginning 0)) (forward-line 1) ;; get any continuation lines (while (and (looking-at "^[ \t]+") (< (point) header-end)) (forward-line 1)) (setq this-line-end (point-marker)) (setq simple-address-list (concat simple-address-list " " (mail-strip-quoted-names (buffer-substring this-line this-line-end)))) ) (erase-buffer) (insert-string " ") (insert-string simple-address-list) (insert-string "\n") (subst-char-in-region (point-min) (point-max) 10 ? t);; newline --> blank (subst-char-in-region (point-min) (point-max) ?, ? t);; comma --> blank (subst-char-in-region (point-min) (point-max) 9 ? t);; tab --> blank (goto-char (point-min)) ;; tidyness in case hook is not robust when it looks at this (while (re-search-forward "[ \t]+" header-end t) (replace-match " ")) (goto-char (point-min)) (let (recipient-address-list) (while (re-search-forward " \\([^ ]+\\) " (point-max) t) (backward-char 1) (setq recipient-address-list (cons (buffer-substring (match-beginning 1) (match-end 1)) recipient-address-list)) ) (setq smtpmail-recipient-address-list recipient-address-list)) ) ) ) ) (defun smtpmail-do-bcc (header-end) "Delete [Resent-]BCC: and their continuation lines from the header area. There may be multiple BCC: lines, and each may have arbitrarily many continuation lines." (let ((case-fold-search t)) (save-excursion (goto-char (point-min)) ;; iterate over all BCC: lines (while (re-search-forward "^\(RESENT-\)?BCC:" header-end t) (delete-region (match-beginning 0) (progn (forward-line 1) (point))) ;; get rid of any continuation lines (while (and (looking-at "^[ \t].*\n") (< (point) header-end)) (replace-match "")) ) ) ;; save-excursion ) ;; let ) (provide 'smtpmail) ;;; smtpmail.el ends here