--- /dev/null
+;;; smtp.el --- basic functions to send mail with SMTP server
+
+;; Copyright (C) 1995, 1996, 1998 Free Software Foundation, Inc.
+
+;; Author: Tomoji Kagatani <kagatani@rbc.ncl.omron.co.jp>
+;; Simon Leinen <simon@switch.ch> (ESMTP support)
+;; Shuhei KOBAYASHI <shuhei-k@jaist.ac.jp>
+;; Keywords: SMTP, mail
+
+;; This file is part of FLIM (Faithful Library about Internet Message).
+
+;; This program 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.
+
+;; This program 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.
+
+;;; Code:
+
+(require 'mail-utils) ; pick up mail-strip-quoted-names
+
+(defgroup smtp nil
+ "SMTP protocol for sending mail."
+ :group 'mail)
+
+(defcustom smtp-default-server nil
+ "*Specify default SMTP server."
+ :type '(choice (const nil) string)
+ :group 'smtp)
+
+(defcustom smtp-server (or (getenv "SMTPSERVER") smtp-default-server)
+ "*The name of the host running SMTP server. It can also be a function
+called from `smtp-via-smtp' with arguments SENDER and RECIPIENTS."
+ :type '(choice (string :tag "Name")
+ (function :tag "Function"))
+ :group 'smtp)
+
+(defcustom smtp-service "smtp"
+ "*SMTP service port number. \"smtp\" or 25."
+ :type '(choice (integer :tag "25" 25)
+ (string :tag "smtp" "smtp"))
+ :group 'smtp)
+
+(defcustom smtp-use-8bitmime t
+ "*If non-nil, use ESMTP 8BITMIME if available."
+ :type 'boolean
+ :group 'smtp)
+
+(defcustom smtp-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 'smtp)
+
+(defvar smtp-debug-info nil)
+(defvar smtp-read-point nil)
+
+(defun smtp-make-fqdn ()
+ "Return user's fully qualified domain name."
+ (let ((system-name (system-name)))
+ (cond
+ (smtp-local-domain
+ (concat system-name "." smtp-local-domain))
+ ((string-match "[^.]\\.[^.]" system-name)
+ system-name)
+ (t
+ (error "Cannot generate valid FQDN. Set `smtp-local-domain' correctly.")))))
+
+(defun smtp-via-smtp (sender recipients smtp-text-buffer)
+ (let ((server (if (functionp smtp-server)
+ (funcall smtp-server sender recipients)
+ smtp-server))
+ process response extensions)
+ (save-excursion
+ (set-buffer
+ (get-buffer-create
+ (format "*trace of SMTP session to %s*" server)))
+ (erase-buffer)
+ (make-local-variable 'smtp-read-point)
+ (setq smtp-read-point (point-min))
+
+ (unwind-protect
+ (catch 'done
+ (setq process (open-network-stream-as-binary
+ "SMTP" (current-buffer) server smtp-service))
+ (or process (throw 'done nil))
+
+ (set-process-filter process 'smtp-process-filter)
+
+ ;; Greeting
+ (setq response (smtp-read-response process))
+ (if (or (null (car response))
+ (not (integerp (car response)))
+ (>= (car response) 400))
+ (throw 'done (car (cdr response))))
+
+ ;; EHLO
+ (smtp-send-command process
+ (format "EHLO %s" (smtp-make-fqdn)))
+ (setq response (smtp-read-response process))
+ (if (or (null (car response))
+ (not (integerp (car response)))
+ (>= (car response) 400))
+ (progn
+ ;; HELO
+ (smtp-send-command process
+ (format "HELO %s" (smtp-make-fqdn)))
+ (setq response (smtp-read-response process))
+ (if (or (null (car response))
+ (not (integerp (car response)))
+ (>= (car response) 400))
+ (throw 'done (car (cdr response)))))
+ (let ((extension-lines (cdr (cdr response))))
+ (while extension-lines
+ (push (intern (downcase (substring (car extension-lines) 4)))
+ extensions)
+ (setq extension-lines (cdr extension-lines)))))
+
+ ;; ONEX --- One message transaction only (sendmail extension?)
+ (if (or (memq 'onex extensions)
+ (memq 'xone extensions))
+ (progn
+ (smtp-send-command process "ONEX")
+ (setq response (smtp-read-response process))
+ (if (or (null (car response))
+ (not (integerp (car response)))
+ (>= (car response) 400))
+ (throw 'done (car (cdr response))))))
+
+ ;; VERB --- Verbose (sendmail extension?)
+ (if (and smtp-debug-info
+ (or (memq 'verb extensions)
+ (memq 'xvrb extensions)))
+ (progn
+ (smtp-send-command process "VERB")
+ (setq response (smtp-read-response process))
+ (if (or (null (car response))
+ (not (integerp (car response)))
+ (>= (car response) 400))
+ (throw 'done (car (cdr response))))))
+
+ ;; XUSR --- Initial (user) submission (sendmail extension?)
+ (if (memq 'xusr extensions)
+ (progn
+ (smtp-send-command process "XUSR")
+ (setq response (smtp-read-response process))
+ (if (or (null (car response))
+ (not (integerp (car response)))
+ (>= (car response) 400))
+ (throw 'done (car (cdr response))))))
+
+ ;; MAIL FROM:<sender>
+ (smtp-send-command
+ process
+ (format "MAIL FROM:<%s>%s%s"
+ sender
+ ;; SIZE --- Message Size Declaration (RFC1870)
+ (if (memq 'size extensions)
+ (format " SIZE=%d"
+ (save-excursion
+ (set-buffer smtp-text-buffer)
+ (+ (- (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)))
+ "")
+ ;; 8BITMIME --- 8bit-MIMEtransport (RFC1652)
+ (if (and (memq '8bitmime extensions)
+ smtp-use-8bitmime)
+ " BODY=8BITMIME"
+ "")))
+ (setq response (smtp-read-response process))
+ (if (or (null (car response))
+ (not (integerp (car response)))
+ (>= (car response) 400))
+ (throw 'done (car (cdr response))))
+
+ ;; RCPT TO:<recipient>
+ (while recipients
+ (smtp-send-command process
+ (format "RCPT TO:<%s>" (car recipients)))
+ (setq recipients (cdr recipients))
+ (setq response (smtp-read-response process))
+ (if (or (null (car response))
+ (not (integerp (car response)))
+ (>= (car response) 400))
+ (throw 'done (car (cdr response)))))
+
+ ;; DATA
+ (smtp-send-command process "DATA")
+ (setq response (smtp-read-response process))
+ (if (or (null (car response))
+ (not (integerp (car response)))
+ (>= (car response) 400))
+ (throw 'done (car (cdr response))))
+
+ ;; Mail contents
+ (smtp-send-data process smtp-text-buffer)
+
+ ;; DATA end "."
+ (smtp-send-command process ".")
+ (setq response (smtp-read-response process))
+ (if (or (null (car response))
+ (not (integerp (car response)))
+ (>= (car response) 400))
+ (throw 'done (car (cdr response))))
+
+ t)
+
+ (if (and process
+ (eq (process-status process) 'open))
+ (progn
+ ;; QUIT
+ (smtp-send-command process "QUIT")
+ (smtp-read-response process)
+ (delete-process process)))))))
+
+(defun smtp-process-filter (process output)
+ (save-excursion
+ (set-buffer (process-buffer process))
+ (goto-char (point-max))
+ (insert output)))
+
+(defun smtp-read-response (process)
+ (let ((case-fold-search nil)
+ (response-strings nil)
+ (response-continue t)
+ (return-value '(nil ()))
+ match-end)
+
+ (while response-continue
+ (goto-char smtp-read-point)
+ (while (not (search-forward "\r\n" nil t))
+ (accept-process-output process)
+ (goto-char smtp-read-point))
+
+ (setq match-end (point))
+ (setq response-strings
+ (cons (buffer-substring smtp-read-point (- match-end 2))
+ response-strings))
+
+ (goto-char smtp-read-point)
+ (if (looking-at "[0-9]+ ")
+ (let ((begin (match-beginning 0))
+ (end (match-end 0)))
+ (if smtp-debug-info
+ (message "%s" (car response-strings)))
+
+ (setq smtp-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 smtp-debug-info
+ (message "%s" (car response-strings)))
+ (setq smtp-read-point match-end)
+ (setq response-continue t))
+ (progn
+ (setq smtp-read-point match-end)
+ (setq response-continue nil)
+ (setq return-value
+ (cons nil (nreverse response-strings)))))))
+ (setq smtp-read-point match-end)
+ return-value))
+
+(defun smtp-send-command (process command)
+ (goto-char (point-max))
+ (insert command "\r\n")
+ (setq smtp-read-point (point))
+ (process-send-string process command)
+ (process-send-string process "\r\n"))
+
+(defun smtp-send-data-1 (process data)
+ (goto-char (point-max))
+ (if smtp-debug-info
+ (insert data "\r\n"))
+ (setq smtp-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 smtp-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 (or (/= (forward-line 1) 0) (eobp))
+ (setq data-continue nil)))
+
+ (smtp-send-data-1 process sending-data))))
+
+(defun smtp-deduce-address-list (smtp-text-buffer header-start header-end)
+ "Get address list suitable for smtp RCPT TO:<address>."
+ (let ((case-fold-search t)
+ (simple-address-list "")
+ this-line
+ this-line-end
+ addr-regexp
+ (smtp-address-buffer (generate-new-buffer " *smtp-mail*")))
+ (unwind-protect
+ (save-excursion
+ ;;
+ (set-buffer smtp-address-buffer)
+ (erase-buffer)
+ (insert (save-excursion
+ (set-buffer smtp-text-buffer)
+ (buffer-substring-no-properties header-start header-end)))
+ (goto-char (point-min))
+ ;; RESENT-* fields should stop processing of regular fields.
+ (save-excursion
+ (if (re-search-forward "^RESENT-TO:" header-end t)
+ (setq addr-regexp
+ "^\\(RESENT-TO:\\|RESENT-CC:\\|RESENT-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")
+ ;; newline --> blank
+ (subst-char-in-region (point-min) (point-max) 10 ? t)
+ ;; comma --> blank
+ (subst-char-in-region (point-min) (point-max) ?, ? t)
+ ;; tab --> blank
+ (subst-char-in-region (point-min) (point-max) 9 ? t)
+
+ (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)))
+ recipient-address-list))
+ (kill-buffer smtp-address-buffer))))
+
+(provide 'smtp)
+
+;;; smtp.el ends here
projects / elisp / flim.git / blobdiff