lisp/erc/erc-ezbounce.el

   1 ;;; erc-ezbounce.el ---  Handle EZBounce bouncer commands
   2
   3 ;; Copyright (C) 2002, 2004, 2006, 2007 Free Software Foundation, Inc.
   4
   5 ;; Author: Andreas Fuchs <asf@void.at>
   6 ;; Keywords: comm
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software; you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation; either version 2, or (at your option)
  13 ;; any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  22 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  23 ;; Boston, MA 02110-1301, USA.
  24
  25 ;;; Commentary:
  26
  27 ;;; Code:
  28
  29 (require 'erc)
  30 (eval-when-compile (require 'cl))
  31
  32 (defgroup erc-ezbounce nil
  33   "Interface to the EZBounce IRC bouncer (a virtual IRC server)"
  34   :group 'erc)
  35
  36 (defcustom erc-ezb-regexp "^ezbounce!srv$"
  37   "Regexp used by the EZBouncer to identify itself to the user."
  38   :group 'erc-ezbounce
  39   :type 'string)
  40
  41 (defcustom erc-ezb-login-alist '()
  42   "Alist of logins suitable for the server we're connecting to.
  43
  44 The alist's format is as follows:
  45
  46  (((server . port) . (username . password))
  47   ((server . port) . (username . password))
  48   ...)"
  49   :group 'erc-ezbounce
  50   :type '(repeat
  51           (cons (cons :tag "Server"
  52                      string
  53                      string)
  54                 (cons :tag "Login"
  55                       string
  56                       string))))
  57
  58 (defvar erc-ezb-action-alist '(("^\\[awaiting login/pass command\\]$" . erc-ezb-identify)
  59                                ("^\\[use /quote CONN <server> to connect\\]$"    . erc-ezb-select)
  60                                ("^ID +IRC NICK +TO +TIME$" . erc-ezb-init-session-list)
  61                                ("^$"                       . erc-ezb-end-of-session-list)
  62                                (".*"                       . erc-ezb-add-session))
  63   "Alist of actions to take on NOTICEs from EZBounce.")
  64
  65
  66 (defvar erc-ezb-session-list '()
  67   "List of detached EZBounce sessions.")
  68 (make-variable-buffer-local 'erc-ezb-session-list)
  69
  70 (defvar erc-ezb-inside-session-listing nil
  71   "Indicate whether current notices are expected to be EZB session listings.")
  72
  73 ;;;###autoload
  74 (defun erc-cmd-ezb (line &optional force)
  75   "Send EZB commands to the EZBouncer verbatim."
  76   (erc-server-send (concat "EZB " line)))
  77 (put 'erc-cmd-EZB 'do-not-parse-args t)
  78
  79 ;;;###autoload
  80 (defun erc-ezb-get-login (server port)
  81   "Return an appropriate EZBounce login for SERVER and PORT.
  82 Look up entries in `erc-ezb-login-alist'. If the username or password
  83 in the alist is `nil', prompt for the appropriate values."
  84   (let ((login (cdr (assoc (cons server port) erc-ezb-login-alist))))
  85     (when login
  86       (let ((username (car login))
  87             (password (cdr login)))
  88         (when (null username)
  89           (setq username (read-from-minibuffer (format "EZBounce user name for %s:%s: " server port))))
  90         (when (null password)
  91           (setq password (read-passwd (format "EZBounce password for %s:%s: " server port))))
  92         (cons username password)))))
  93
  94 ;;;###autoload
  95 (defun erc-ezb-lookup-action (message)
  96   (let ((function-alist erc-ezb-action-alist)
  97         found)
  98     (while (and (not found)
  99                 function-alist)
 100       (let ((regexp (caar function-alist))
 101             (function (cdar function-alist)))
 102         (when (string-match regexp message)
 103           (setq found function))
 104         (setq function-alist (cdr function-alist))))
 105     found))
 106
 107 ;;;###autoload
 108 (defun erc-ezb-notice-autodetect (proc parsed)
 109   "React on an EZBounce NOTICE request."
 110   (let* ((sender (erc-response.sender parsed))
 111          (message (erc-response.contents parsed))
 112          (function (erc-ezb-lookup-action message)))
 113     (when (and (string-match erc-ezb-regexp sender)
 114                function)
 115       (funcall function message)))
 116   nil)
 117
 118 ;;;###autoload
 119 (defun erc-ezb-identify (message)
 120   "Identify to the EZBouncer server."
 121   (let ((login (erc-ezb-get-login erc-session-server (erc-port-to-string erc-session-port))))
 122     (unless (null login)
 123       (let ((username (car login))
 124             (pass (cdr login)))
 125         (erc-server-send (concat "LOGIN " username " " pass))))))
 126
 127 ;;;###autoload
 128 (defun erc-ezb-init-session-list (message)
 129   "Reset the EZBounce session list to nil."
 130   (setq erc-ezb-session-list nil)
 131   (setq erc-ezb-inside-session-listing t))
 132
 133 ;;;###autoload
 134 (defun erc-ezb-end-of-session-list (message)
 135   "Indicate the end of the EZBounce session listing."
 136   (setq erc-ezb-inside-session-listing nil))
 137
 138 ;;;###autoload
 139 (defun erc-ezb-add-session (message)
 140   "Add an EZBounce session to the session list."
 141   (when (and erc-ezb-inside-session-listing
 142              (string-match "^\\([^ \n]+\\) +\\([^ \n]+\\) +\\([^ \n]+\\) +\\([^ \n]+\\)$" message))
 143     (let ((id (match-string 1 message))
 144           (nick (match-string 2 message))
 145           (to   (match-string 3 message)))
 146       (add-to-list 'erc-ezb-session-list (list id nick to)))))
 147
 148 ;;;###autoload
 149 (defun erc-ezb-select (message)
 150   "Select an IRC server to use by EZBounce, in ERC style."
 151   (unless (and erc-ezb-session-list
 152                (erc-ezb-select-session))
 153     (let* ((server (read-from-minibuffer
 154                     "IRC server: " "" nil nil 'erc-server-history-list))
 155            (port
 156             (erc-string-to-port
 157              (read-from-minibuffer "IRC port: "
 158                                    (erc-port-to-string "6667")))))
 159       (erc-server-send (format "CONN %s %s" server port)))))
 160
 161
 162 ;;;###autoload
 163 (defun erc-ezb-select-session ()
 164   "Select a detached EZBounce session."
 165   (let ((session (completing-read "Existing Session (RET to enter a new one): "
 166                                erc-ezb-session-list)))
 167     (if (string= session "")
 168         nil
 169       (erc-server-send (format "REATTACH %s" session)))))
 170
 171
 172 ;;;###autoload
 173 (defun erc-ezb-initialize ()
 174   "Add EZBouncer convenience functions to ERC."
 175   (add-hook 'erc-server-NOTICE-functions 'erc-ezb-notice-autodetect))
 176
 177 (provide 'erc-ezbounce)
 178
 179 ;; arch-tag: e972aa7b-a9f4-4d16-a489-074ec7a1002e
 180 ;;; erc-ezbounce.el ends here