lisp/url/url-mailto.el

   1 ;;; url-mail.el --- Mail Uniform Resource Locator retrieval code
   2
   3 ;; Copyright (C) 1996-1999, 2004-2017 Free Software Foundation, Inc.
   4
   5 ;; Keywords: comm, data, processes
   6
   7 ;; This file is part of GNU Emacs.
   8 ;;
   9 ;; GNU Emacs is free software: you can redistribute it and/or modify
  10 ;; it under the terms of the GNU General Public License as published by
  11 ;; the Free Software Foundation, either version 3 of the License, or
  12 ;; (at your option) any later version.
  13
  14 ;; GNU Emacs is distributed in the hope that it will be useful,
  15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 ;; GNU General Public License for more details.
  18
  19 ;; You should have received a copy of the GNU General Public License
  20 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  21
  22 ;;; Commentary:
  23
  24 ;;; Code:
  25
  26 (require 'url-vars)
  27 (require 'url-parse)
  28 (require 'url-util)
  29
  30 ;;;###autoload
  31 (defun url-mail (&rest args)
  32   (interactive "P")
  33   (if (fboundp 'message-mail)
  34       (apply 'message-mail args)
  35     (or (apply 'mail args)
  36         (error "Mail aborted"))))
  37
  38 (defun url-mail-goto-field (field)
  39   (if (not field)
  40       (goto-char (point-max))
  41     (let ((dest nil)
  42           (lim nil)
  43           (case-fold-search t))
  44       (save-excursion
  45         (goto-char (point-min))
  46         (if (re-search-forward (regexp-quote mail-header-separator) nil t)
  47             (setq lim (match-beginning 0)))
  48         (goto-char (point-min))
  49         (if (re-search-forward (concat "^" (regexp-quote field) ":") lim t)
  50             (setq dest (match-beginning 0))))
  51       (if dest
  52           (progn
  53             (goto-char dest)
  54             (end-of-line))
  55         (goto-char lim)
  56         (insert (capitalize field) ": ")
  57         (save-excursion
  58           (insert "\n"))))))
  59
  60 (declare-function mail-send-and-exit "sendmail")
  61
  62 ;;;###autoload
  63 (defun url-mailto (url)
  64   "Handle the mailto: URL syntax."
  65   (if (url-user url)
  66       ;; malformed mailto URL (mailto://wmperry@gnu.org) instead of
  67       ;; mailto:wmperry@gnu.org
  68       (setf (url-filename url) (concat (url-user url) "@" (url-filename url))))
  69   (setq url (url-filename url))
  70   (let (to args source-url subject func headers-start)
  71     (if (string-match (regexp-quote "?") url)
  72         (setq headers-start (match-end 0)
  73               to (url-unhex-string (substring url 0 (match-beginning 0)))
  74               args (url-parse-query-string
  75                     (substring url headers-start nil) t t))
  76       (setq to (url-unhex-string url)))
  77     (setq source-url (url-view-url t))
  78     (if (and url-request-data (not (assoc "subject" args)))
  79         (setq args (cons (list "subject"
  80                                (concat "Automatic submission from "
  81                                        url-package-name "/"
  82                                        url-package-version)) args)))
  83     (if (and source-url (not (assoc "x-url-from" args)))
  84         (setq args (cons (list "x-url-from" source-url) args)))
  85
  86     (let ((tolist (assoc "to" args)))
  87       (if tolist
  88           (if (not (string= to ""))
  89               (setcdr tolist
  90                       (list (concat to ", " (cadr tolist)))))
  91         (setq args (cons (list "to" to) args))))
  92
  93     (setq subject (cdr-safe (assoc "subject" args)))
  94     (if (eq url-mail-command 'compose-mail)
  95         (compose-mail nil nil nil 'new)
  96       (if (eq url-mail-command 'mail)
  97           (mail 'new)
  98         (funcall url-mail-command)))
  99     (while args
 100       (if (string= (caar args) "body")
 101           (progn
 102             (goto-char (point-min))
 103             (or (search-forward (concat "\n" mail-header-separator "\n") nil t)
 104                 (goto-char (point-max)))
 105             (insert (mapconcat
 106                      #'(lambda (string)
 107                          (replace-regexp-in-string "\r\n" "\n" string))
 108                      (cdar args) "\n")))
 109         (url-mail-goto-field (caar args))
 110         (setq func (intern-soft (concat "mail-" (caar args))))
 111         (insert (mapconcat 'identity (cdar args) ", ")))
 112       (setq args (cdr args)))
 113     ;; (url-mail-goto-field "User-Agent")
 114 ;;     (insert url-package-name "/" url-package-version " URL/" url-version)
 115     (if (not url-request-data)
 116         (progn
 117           (set-buffer-modified-p nil)
 118           (if subject
 119               (url-mail-goto-field nil)
 120             (url-mail-goto-field "subject")))
 121       (if url-request-extra-headers
 122           (mapconcat
 123            (lambda (x)
 124              (url-mail-goto-field (car x))
 125              (insert (cdr x)))
 126            url-request-extra-headers ""))
 127       (goto-char (point-max))
 128       (insert url-request-data)
 129       ;; It seems Microsoft-ish to send without warning.
 130       ;; Fixme: presumably this should depend on a privacy setting.
 131       (if (y-or-n-p "Send this auto-generated mail? ")
 132           (let ((buffer (current-buffer)))
 133             (cond ((eq url-mail-command 'compose-mail)
 134                    (funcall (get mail-user-agent 'sendfunc) nil))
 135                   ;; otherwise, we can't be sure
 136                   ((fboundp 'message-send-and-exit)
 137                    (message-send-and-exit))
 138                   (t (mail-send-and-exit nil)))
 139             (kill-buffer buffer))))
 140     nil))
 141
 142 (provide 'url-mailto)
 143
 144 ;;; url-mailto.el ends here