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1 ;;; nntp.el --- nntp access for Gnus
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2 ;;; Copyright (C) 1987,88,89,90,92,93,94,95,96,97 Free Software Foundation, Inc.
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3
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4 ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
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5 ;; Keywords: news
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6
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7 ;; This file is part of GNU Emacs.
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8
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9 ;; GNU Emacs is free software; you can redistribute it and/or modify
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10 ;; it under the terms of the GNU General Public License as published by
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11 ;; the Free Software Foundation; either version 2, or (at your option)
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12 ;; any later version.
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13
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14 ;; GNU Emacs is distributed in the hope that it will be useful,
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15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 ;; GNU General Public License for more details.
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18
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19 ;; You should have received a copy of the GNU General Public License
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20 ;; along with GNU Emacs; see the file COPYING. If not, write to
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21 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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22
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23 ;;; Commentary:
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24
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25 ;;; Code:
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26
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27 (require 'nnheader)
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28 (require 'nnoo)
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29 (require 'gnus-util)
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30
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31 (nnoo-declare nntp)
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32
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33 (eval-and-compile
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34 (unless (fboundp 'open-network-stream)
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35 (require 'tcp)))
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36
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37 (eval-when-compile (require 'cl))
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38
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39 (defvoo nntp-address nil
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40 "Address of the physical nntp server.")
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41
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42 (defvoo nntp-port-number "nntp"
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43 "Port number on the physical nntp server.")
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44
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45 (defvoo nntp-server-opened-hook '(nntp-send-mode-reader)
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46 "*Hook used for sending commands to the server at startup.
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47 The default value is `nntp-send-mode-reader', which makes an innd
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48 server spawn an nnrpd server. Another useful function to put in this
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49 hook might be `nntp-send-authinfo', which will prompt for a password
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50 to allow posting from the server. Note that this is only necessary to
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51 do on servers that use strict access control.")
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52
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53 (defvoo nntp-authinfo-function 'nntp-send-authinfo
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54 "Function used to send AUTHINFO to the server.")
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55
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56 (defvoo nntp-server-action-alist
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57 '(("nntpd 1\\.5\\.11t"
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58 (remove-hook 'nntp-server-opened-hook 'nntp-send-mode-reader))
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59 ("NNRP server Netscape"
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60 (setq nntp-server-list-active-group nil)))
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61 "Alist of regexps to match on server types and actions to be taken.
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62 For instance, if you want Gnus to beep every time you connect
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63 to innd, you could say something like:
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64
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65 \(setq nntp-server-action-alist
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66 '((\"innd\" (ding))))
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67
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68 You probably don't want to do that, though.")
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69
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70 (defvoo nntp-open-connection-function 'nntp-open-network-stream
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71 "*Function used for connecting to a remote system.
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72 It will be called with the buffer to output in.
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73
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74 Two pre-made functions are `nntp-open-network-stream', which is the
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75 default, and simply connects to some port or other on the remote
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76 system (see nntp-port-number). The other are `nntp-open-rlogin', which
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77 does an rlogin on the remote system, and then does a telnet to the
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78 NNTP server available there (see nntp-rlogin-parameters) and `nntp-open-telnet' which
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79 telnets to a remote system, logs in and does the same")
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80
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81 (defvoo nntp-rlogin-parameters '("telnet" "-8" "${NNTPSERVER:=news}" "nntp")
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82 "*Parameters to `nntp-open-login'.
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83 That function may be used as `nntp-open-connection-function'. In that
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84 case, this list will be used as the parameter list given to rsh.")
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85
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86 (defvoo nntp-rlogin-user-name nil
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87 "*User name on remote system when using the rlogin connect method.")
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88
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89 (defvoo nntp-telnet-parameters '("exec" "telnet" "-8" "${NNTPSERVER:=news}" "nntp")
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90 "*Parameters to `nntp-open-telnet'.
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91 That function may be used as `nntp-open-connection-function'. In that
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92 case, this list will be executed as a command after logging in
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93 via telnet.")
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94
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95 (defvoo nntp-telnet-user-name nil
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96 "User name to log in via telnet with.")
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97
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98 (defvoo nntp-telnet-passwd nil
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99 "Password to use to log in via telnet with.")
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100
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101 (defvoo nntp-end-of-line "\r\n"
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102 "String to use on the end of lines when talking to the NNTP server.
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103 This is \"\\r\\n\" by default, but should be \"\\n\" when
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104 using rlogin or telnet to communicate with the server.")
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105
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106 (defvoo nntp-large-newsgroup 50
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107 "*The number of the articles which indicates a large newsgroup.
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108 If the number of the articles is greater than the value, verbose
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109 messages will be shown to indicate the current status.")
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110
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111 (defvoo nntp-maximum-request 400
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112 "*The maximum number of the requests sent to the NNTP server at one time.
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113 If Emacs hangs up while retrieving headers, set the variable to a
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114 lower value.")
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115
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116 (defvoo nntp-nov-is-evil nil
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117 "*If non-nil, nntp will never attempt to use XOVER when talking to the server.")
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118
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119 (defvoo nntp-xover-commands '("XOVER" "XOVERVIEW")
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120 "*List of strings that are used as commands to fetch NOV lines from a server.
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121 The strings are tried in turn until a positive response is gotten. If
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122 none of the commands are successful, nntp will just grab headers one
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123 by one.")
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124
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125 (defvoo nntp-nov-gap 20
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126 "*Maximum allowed gap between two articles.
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127 If the gap between two consecutive articles is bigger than this
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128 variable, split the XOVER request into two requests.")
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129
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130 (defvoo nntp-connection-timeout nil
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131 "*Number of seconds to wait before an nntp connection times out.
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132 If this variable is nil, which is the default, no timers are set.")
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133
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134 (defvoo nntp-prepare-server-hook nil
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135 "*Hook run before a server is opened.
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136 If can be used to set up a server remotely, for instance. Say you
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137 have an account at the machine \"other.machine\". This machine has
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138 access to an NNTP server that you can't access locally. You could
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139 then use this hook to rsh to the remote machine and start a proxy NNTP
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140 server there that you can connect to. See also `nntp-open-connection-function'")
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141
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142 (defvoo nntp-warn-about-losing-connection t
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143 "*If non-nil, beep when a server closes connection.")
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144
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145
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146
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147 ;;; Internal variables.
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148
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149 (defvar nntp-have-messaged nil)
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150
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151 (defvar nntp-process-wait-for nil)
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152 (defvar nntp-process-to-buffer nil)
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153 (defvar nntp-process-callback nil)
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154 (defvar nntp-process-decode nil)
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155 (defvar nntp-process-start-point nil)
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156 (defvar nntp-inside-change-function nil)
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157
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158 (defvar nntp-connection-list nil)
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159
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160 (defvoo nntp-server-type nil)
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161 (defvoo nntp-connection-alist nil)
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162 (defvoo nntp-status-string "")
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163 (defconst nntp-version "nntp 5.0")
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164 (defvoo nntp-inhibit-erase nil)
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165 (defvoo nntp-inhibit-output nil)
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166
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167 (defvoo nntp-server-xover 'try)
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168 (defvoo nntp-server-list-active-group 'try)
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169
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170 (eval-and-compile
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171 (autoload 'nnmail-read-passwd "nnmail"))
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172
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173
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174
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175 ;;; Interface functions.
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176
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177 (nnoo-define-basics nntp)
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178
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179 (deffoo nntp-retrieve-headers (articles &optional group server fetch-old)
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180 "Retrieve the headers of ARTICLES."
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181 (nntp-possibly-change-group group server)
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182 (save-excursion
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183 (set-buffer (nntp-find-connection-buffer nntp-server-buffer))
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184 (erase-buffer)
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185 (if (and (not gnus-nov-is-evil)
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186 (not nntp-nov-is-evil)
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187 (nntp-retrieve-headers-with-xover articles fetch-old))
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188 ;; We successfully retrieved the headers via XOVER.
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189 'nov
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190 ;; XOVER didn't work, so we do it the hard, slow and inefficient
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191 ;; way.
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192 (let ((number (length articles))
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193 (count 0)
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194 (received 0)
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195 (last-point (point-min))
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196 (buf (nntp-find-connection-buffer nntp-server-buffer))
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197 (nntp-inhibit-erase t))
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198 ;; Send HEAD command.
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199 (while articles
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200 (nntp-send-command
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201 nil
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202 "HEAD" (if (numberp (car articles))
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203 (int-to-string (car articles))
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204 ;; `articles' is either a list of article numbers
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205 ;; or a list of article IDs.
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206 (car articles)))
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207 (setq articles (cdr articles)
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208 count (1+ count))
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209 ;; Every 400 header requests we have to read the stream in
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210 ;; order to avoid deadlocks.
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211 (when (or (null articles) ;All requests have been sent.
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212 (zerop (% count nntp-maximum-request)))
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213 (nntp-accept-response)
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214 (while (progn
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215 (progn
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216 (set-buffer buf)
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217 (goto-char last-point))
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218 ;; Count replies.
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219 (while (re-search-forward "^[0-9]" nil t)
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220 (incf received))
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221 (setq last-point (point))
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222 (< received count))
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223 ;; If number of headers is greater than 100, give
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224 ;; informative messages.
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225 (and (numberp nntp-large-newsgroup)
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226 (> number nntp-large-newsgroup)
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227 (zerop (% received 20))
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228 (nnheader-message 6 "NNTP: Receiving headers... %d%%"
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229 (/ (* received 100) number)))
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230 (nntp-accept-response))))
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231 ;; Wait for text of last command.
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232 (goto-char (point-max))
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233 (re-search-backward "^[0-9]" nil t)
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234 (when (looking-at "^[23]")
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235 (while (progn
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236 (goto-char (- (point-max) 3))
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237 (not (looking-at "^\\.\r?\n")))
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238 (nntp-accept-response)))
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239 (and (numberp nntp-large-newsgroup)
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240 (> number nntp-large-newsgroup)
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241 (nnheader-message 6 "NNTP: Receiving headers...done"))
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242
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243 ;; Now all of replies are received. Fold continuation lines.
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244 (nnheader-fold-continuation-lines)
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245 ;; Remove all "\r"'s.
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246 (nnheader-strip-cr)
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247 (copy-to-buffer nntp-server-buffer (point-min) (point-max))
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248 'headers))))
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249
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250 (deffoo nntp-retrieve-groups (groups &optional server)
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251 "Retrieve group info on GROUPS."
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252 (nntp-possibly-change-group nil server)
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253 (save-excursion
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254 (set-buffer (nntp-find-connection-buffer nntp-server-buffer))
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255 ;; The first time this is run, this variable is `try'. So we
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256 ;; try.
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257 (when (eq nntp-server-list-active-group 'try)
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258 (nntp-try-list-active (car groups)))
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259 (erase-buffer)
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260 (let ((count 0)
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261 (received 0)
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262 (last-point (point-min))
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263 (nntp-inhibit-erase t)
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264 (command (if nntp-server-list-active-group "LIST ACTIVE" "GROUP")))
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265 (while groups
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266 ;; Send the command to the server.
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267 (nntp-send-command nil command (pop groups))
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268 (incf count)
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269 ;; Every 400 requests we have to read the stream in
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270 ;; order to avoid deadlocks.
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271 (when (or (null groups) ;All requests have been sent.
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272 (zerop (% count nntp-maximum-request)))
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273 (nntp-accept-response)
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274 (while (progn
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275 (goto-char last-point)
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276 ;; Count replies.
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277 (while (re-search-forward "^[0-9]" nil t)
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278 (incf received))
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279 (setq last-point (point))
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280 (< received count))
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281 (nntp-accept-response))))
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282
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283 ;; Wait for the reply from the final command.
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284 (goto-char (point-max))
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285 (re-search-backward "^[0-9]" nil t)
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286 (when (looking-at "^[23]")
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287 (while (progn
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288 (goto-char (point-max))
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289 (if (not nntp-server-list-active-group)
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290 (not (re-search-backward "\r?\n" (- (point) 3) t))
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291 (not (re-search-backward "^\\.\r?\n" (- (point) 4) t))))
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292 (nntp-accept-response)))
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293
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294 ;; Now all replies are received. We remove CRs.
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295 (goto-char (point-min))
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296 (while (search-forward "\r" nil t)
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297 (replace-match "" t t))
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298
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299 (if (not nntp-server-list-active-group)
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300 (progn
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301 (copy-to-buffer nntp-server-buffer (point-min) (point-max))
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302 'group)
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303 ;; We have read active entries, so we just delete the
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304 ;; superfluous gunk.
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305 (goto-char (point-min))
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306 (while (re-search-forward "^[.2-5]" nil t)
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307 (delete-region (match-beginning 0)
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308 (progn (forward-line 1) (point))))
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309 (copy-to-buffer nntp-server-buffer (point-min) (point-max))
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310 'active))))
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311
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312 (deffoo nntp-retrieve-articles (articles &optional group server)
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313 (nntp-possibly-change-group group server)
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314 (save-excursion
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315 (let ((number (length articles))
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316 (count 0)
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317 (received 0)
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318 (last-point (point-min))
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319 (buf (nntp-find-connection-buffer nntp-server-buffer))
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320 (nntp-inhibit-erase t)
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321 (map (apply 'vector articles))
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322 (point 1)
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323 article alist)
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324 (set-buffer buf)
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325 (erase-buffer)
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326 ;; Send HEAD command.
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327 (while (setq article (pop articles))
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328 (nntp-send-command
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329 nil
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330 "ARTICLE" (if (numberp article)
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331 (int-to-string article)
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332 ;; `articles' is either a list of article numbers
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333 ;; or a list of article IDs.
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334 article))
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335 (incf count)
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336 ;; Every 400 requests we have to read the stream in
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337 ;; order to avoid deadlocks.
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338 (when (or (null articles) ;All requests have been sent.
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339 (zerop (% count nntp-maximum-request)))
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340 (nntp-accept-response)
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341 (while (progn
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342 (progn
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343 (set-buffer buf)
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344 (goto-char last-point))
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345 ;; Count replies.
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346 (while (nntp-next-result-arrived-p)
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347 (aset map received (cons (aref map received) (point)))
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348 (incf received))
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349 (setq last-point (point))
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350 (< received count))
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351 ;; If number of headers is greater than 100, give
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352 ;; informative messages.
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353 (and (numberp nntp-large-newsgroup)
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354 (> number nntp-large-newsgroup)
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355 (zerop (% received 20))
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356 (nnheader-message 6 "NNTP: Receiving articles... %d%%"
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357 (/ (* received 100) number)))
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358 (nntp-accept-response))))
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359 (and (numberp nntp-large-newsgroup)
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360 (> number nntp-large-newsgroup)
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|
|
361 (nnheader-message 6 "NNTP: Receiving headers...done"))
|
|
0
|
362
|
|
16
|
363 ;; Now we have all the responses. We go through the results,
|
|
|
364 ;; washes it and copies it over to the server buffer.
|
|
|
365 (set-buffer nntp-server-buffer)
|
|
|
366 (erase-buffer)
|
|
|
367 (mapcar
|
|
|
368 (lambda (entry)
|
|
|
369 (narrow-to-region
|
|
|
370 (setq point (goto-char (point-max)))
|
|
|
371 (progn
|
|
|
372 (insert-buffer-substring buf last-point (cdr entry))
|
|
|
373 (point-max)))
|
|
|
374 (nntp-decode-text)
|
|
|
375 (widen)
|
|
|
376 (cons (car entry) point))
|
|
|
377 map))))
|
|
|
378
|
|
|
379 (defun nntp-next-result-arrived-p ()
|
|
|
380 (let ((point (point)))
|
|
|
381 (cond
|
|
|
382 ((looking-at "2")
|
|
|
383 (if (re-search-forward "\n.\r?\n" nil t)
|
|
|
384 t
|
|
|
385 (goto-char point)
|
|
|
386 nil))
|
|
|
387 ((looking-at "[34]")
|
|
|
388 (forward-line 1)
|
|
|
389 t)
|
|
|
390 (t
|
|
|
391 nil))))
|
|
0
|
392
|
|
16
|
393 (defun nntp-try-list-active (group)
|
|
|
394 (nntp-list-active-group group)
|
|
|
395 (save-excursion
|
|
|
396 (set-buffer nntp-server-buffer)
|
|
|
397 (goto-char (point-min))
|
|
|
398 (cond ((or (eobp)
|
|
|
399 (looking-at "5[0-9]+"))
|
|
|
400 (setq nntp-server-list-active-group nil))
|
|
|
401 (t
|
|
|
402 (setq nntp-server-list-active-group t)))))
|
|
|
403
|
|
|
404 (deffoo nntp-list-active-group (group &optional server)
|
|
|
405 "Return the active info on GROUP (which can be a regexp."
|
|
|
406 (nntp-possibly-change-group nil server)
|
|
|
407 (nntp-send-command "^.*\r?\n" "LIST ACTIVE" group))
|
|
|
408
|
|
|
409 (deffoo nntp-request-article (article &optional group server buffer command)
|
|
|
410 (nntp-possibly-change-group group server)
|
|
|
411 (when (nntp-send-command-and-decode
|
|
|
412 "\r?\n\\.\r?\n" "ARTICLE"
|
|
|
413 (if (numberp article) (int-to-string article) article))
|
|
|
414 (when (and buffer
|
|
|
415 (not (equal buffer nntp-server-buffer)))
|
|
|
416 (save-excursion
|
|
|
417 (set-buffer nntp-server-buffer)
|
|
|
418 (copy-to-buffer buffer (point-min) (point-max))
|
|
|
419 (nntp-find-group-and-number)))
|
|
|
420 (nntp-find-group-and-number)))
|
|
|
421
|
|
|
422 (deffoo nntp-request-head (article &optional group server)
|
|
|
423 (nntp-possibly-change-group group server)
|
|
|
424 (when (nntp-send-command-and-decode
|
|
|
425 "\r?\n\\.\r?\n" "HEAD"
|
|
|
426 (if (numberp article) (int-to-string article) article))
|
|
|
427 (nntp-find-group-and-number)))
|
|
|
428
|
|
|
429 (deffoo nntp-request-body (article &optional group server)
|
|
|
430 (nntp-possibly-change-group group server)
|
|
|
431 (nntp-send-command-and-decode
|
|
|
432 "\r?\n\\.\r?\n" "BODY"
|
|
|
433 (if (numberp article) (int-to-string article) article)))
|
|
|
434
|
|
|
435 (deffoo nntp-request-group (group &optional server dont-check)
|
|
|
436 (nntp-possibly-change-group nil server)
|
|
|
437 (when (nntp-send-command "^2.*\n" "GROUP" group)
|
|
|
438 (let ((entry (nntp-find-connection-entry nntp-server-buffer)))
|
|
|
439 (setcar (cddr entry) group))))
|
|
|
440
|
|
|
441 (deffoo nntp-close-group (group &optional server)
|
|
|
442 t)
|
|
0
|
443
|
|
|
444 (deffoo nntp-server-opened (&optional server)
|
|
|
445 "Say whether a connection to SERVER has been opened."
|
|
|
446 (and (nnoo-current-server-p 'nntp server)
|
|
|
447 nntp-server-buffer
|
|
16
|
448 (gnus-buffer-live-p nntp-server-buffer)
|
|
|
449 (nntp-find-connection nntp-server-buffer)))
|
|
0
|
450
|
|
16
|
451 (deffoo nntp-open-server (server &optional defs connectionless)
|
|
|
452 (nnheader-init-server-buffer)
|
|
|
453 (if (nntp-server-opened server)
|
|
|
454 t
|
|
|
455 (when (or (stringp (car defs))
|
|
|
456 (numberp (car defs)))
|
|
|
457 (setq defs (cons (list 'nntp-port-number (car defs)) (cdr defs))))
|
|
|
458 (unless (assq 'nntp-address defs)
|
|
|
459 (setq defs (append defs (list (list 'nntp-address server)))))
|
|
|
460 (nnoo-change-server 'nntp server defs)
|
|
|
461 (unless connectionless
|
|
|
462 (or (nntp-find-connection nntp-server-buffer)
|
|
|
463 (nntp-open-connection nntp-server-buffer)))))
|
|
0
|
464
|
|
16
|
465 (deffoo nntp-close-server (&optional server)
|
|
|
466 (nntp-possibly-change-group nil server t)
|
|
|
467 (let (process)
|
|
|
468 (while (setq process (car (pop nntp-connection-alist)))
|
|
|
469 (when (memq (process-status process) '(open run))
|
|
|
470 (set-process-sentinel process nil)
|
|
|
471 (nntp-send-string process "QUIT"))
|
|
|
472 (when (buffer-name (process-buffer process))
|
|
|
473 (kill-buffer (process-buffer process))))
|
|
|
474 (nnoo-close-server 'nntp)))
|
|
0
|
475
|
|
16
|
476 (deffoo nntp-request-close ()
|
|
|
477 (let (process)
|
|
|
478 (while (setq process (pop nntp-connection-list))
|
|
|
479 (when (memq (process-status process) '(open run))
|
|
|
480 (set-process-sentinel process nil)
|
|
|
481 (ignore-errors
|
|
|
482 (nntp-send-string process "QUIT")))
|
|
|
483 (when (buffer-name (process-buffer process))
|
|
|
484 (kill-buffer (process-buffer process))))))
|
|
0
|
485
|
|
16
|
486 (deffoo nntp-request-list (&optional server)
|
|
|
487 (nntp-possibly-change-group nil server)
|
|
|
488 (nntp-send-command-and-decode "\r?\n\\.\r?\n" "LIST"))
|
|
0
|
489
|
|
16
|
490 (deffoo nntp-request-list-newsgroups (&optional server)
|
|
|
491 (nntp-possibly-change-group nil server)
|
|
|
492 (nntp-send-command "\r?\n\\.\r?\n" "LIST NEWSGROUPS"))
|
|
0
|
493
|
|
16
|
494 (deffoo nntp-request-newgroups (date &optional server)
|
|
|
495 (nntp-possibly-change-group nil server)
|
|
|
496 (save-excursion
|
|
|
497 (set-buffer nntp-server-buffer)
|
|
|
498 (let* ((date (timezone-parse-date date))
|
|
|
499 (time-string
|
|
|
500 (format "%s%02d%02d %s%s%s"
|
|
|
501 (substring (aref date 0) 2) (string-to-int (aref date 1))
|
|
|
502 (string-to-int (aref date 2)) (substring (aref date 3) 0 2)
|
|
|
503 (substring
|
|
|
504 (aref date 3) 3 5) (substring (aref date 3) 6 8))))
|
|
|
505 (prog1
|
|
|
506 (nntp-send-command "^\\.\r?\n" "NEWGROUPS" time-string)
|
|
|
507 (nntp-decode-text)))))
|
|
0
|
508
|
|
16
|
509 (deffoo nntp-request-post (&optional server)
|
|
|
510 (nntp-possibly-change-group nil server)
|
|
|
511 (when (nntp-send-command "^[23].*\r?\n" "POST")
|
|
|
512 (nntp-send-buffer "^[23].*\n")))
|
|
0
|
513
|
|
16
|
514 (deffoo nntp-request-type (group article)
|
|
|
515 'news)
|
|
|
516
|
|
|
517 (deffoo nntp-asynchronous-p ()
|
|
0
|
518 t)
|
|
|
519
|
|
16
|
520 ;;; Hooky functions.
|
|
0
|
521
|
|
|
522 (defun nntp-send-mode-reader ()
|
|
|
523 "Send the MODE READER command to the nntp server.
|
|
|
524 This function is supposed to be called from `nntp-server-opened-hook'.
|
|
|
525 It will make innd servers spawn an nnrpd process to allow actual article
|
|
|
526 reading."
|
|
|
527 (nntp-send-command "^.*\r?\n" "MODE READER"))
|
|
|
528
|
|
|
529 (defun nntp-send-nosy-authinfo ()
|
|
|
530 "Send the AUTHINFO to the nntp server.
|
|
|
531 This function is supposed to be called from `nntp-server-opened-hook'.
|
|
|
532 It will prompt for a password."
|
|
16
|
533 (nntp-send-command
|
|
|
534 "^.*\r?\n" "AUTHINFO USER"
|
|
|
535 (read-string (format "NNTP (%s) user name: " nntp-address)))
|
|
|
536 (nntp-send-command
|
|
|
537 "^.*\r?\n" "AUTHINFO PASS"
|
|
|
538 (nnmail-read-passwd "NNTP (%s) password: " nntp-address)))
|
|
0
|
539
|
|
|
540 (defun nntp-send-authinfo ()
|
|
|
541 "Send the AUTHINFO to the nntp server.
|
|
|
542 This function is supposed to be called from `nntp-server-opened-hook'.
|
|
|
543 It will prompt for a password."
|
|
|
544 (nntp-send-command "^.*\r?\n" "AUTHINFO USER" (user-login-name))
|
|
16
|
545 (nntp-send-command
|
|
|
546 "^.*\r?\n" "AUTHINFO PASS"
|
|
|
547 (nnmail-read-passwd (format "NNTP (%s) password: " nntp-address))))
|
|
0
|
548
|
|
|
549 (defun nntp-send-authinfo-from-file ()
|
|
|
550 "Send the AUTHINFO to the nntp server.
|
|
22
|
551 This function is supposed to be called from `nntp-server-opened-hook'."
|
|
0
|
552 (when (file-exists-p "~/.nntp-authinfo")
|
|
16
|
553 (nnheader-temp-write nil
|
|
0
|
554 (insert-file-contents "~/.nntp-authinfo")
|
|
|
555 (goto-char (point-min))
|
|
|
556 (nntp-send-command "^.*\r?\n" "AUTHINFO USER" (user-login-name))
|
|
|
557 (nntp-send-command
|
|
|
558 "^.*\r?\n" "AUTHINFO PASS"
|
|
16
|
559 (buffer-substring (point) (progn (end-of-line) (point)))))))
|
|
|
560
|
|
|
561 ;;; Internal functions.
|
|
|
562
|
|
|
563 (defun nntp-send-command (wait-for &rest strings)
|
|
|
564 "Send STRINGS to server and wait until WAIT-FOR returns."
|
|
|
565 (when (and (not nnheader-callback-function)
|
|
|
566 (not nntp-inhibit-output))
|
|
|
567 (save-excursion
|
|
|
568 (set-buffer nntp-server-buffer)
|
|
|
569 (erase-buffer)))
|
|
|
570 (nntp-retrieve-data
|
|
|
571 (mapconcat 'identity strings " ")
|
|
|
572 nntp-address nntp-port-number nntp-server-buffer
|
|
|
573 wait-for nnheader-callback-function))
|
|
|
574
|
|
|
575 (defun nntp-send-command-nodelete (wait-for &rest strings)
|
|
|
576 "Send STRINGS to server and wait until WAIT-FOR returns."
|
|
|
577 (nntp-retrieve-data
|
|
|
578 (mapconcat 'identity strings " ")
|
|
|
579 nntp-address nntp-port-number nntp-server-buffer
|
|
|
580 wait-for nnheader-callback-function))
|
|
|
581
|
|
|
582 (defun nntp-send-command-and-decode (wait-for &rest strings)
|
|
|
583 "Send STRINGS to server and wait until WAIT-FOR returns."
|
|
|
584 (when (and (not nnheader-callback-function)
|
|
|
585 (not nntp-inhibit-output))
|
|
|
586 (save-excursion
|
|
|
587 (set-buffer nntp-server-buffer)
|
|
|
588 (erase-buffer)))
|
|
|
589 (nntp-retrieve-data
|
|
|
590 (mapconcat 'identity strings " ")
|
|
|
591 nntp-address nntp-port-number nntp-server-buffer
|
|
|
592 wait-for nnheader-callback-function t))
|
|
|
593
|
|
|
594 (defun nntp-send-buffer (wait-for)
|
|
|
595 "Send the current buffer to server and wait until WAIT-FOR returns."
|
|
|
596 (when (and (not nnheader-callback-function)
|
|
|
597 (not nntp-inhibit-output))
|
|
|
598 (save-excursion
|
|
|
599 (set-buffer (nntp-find-connection-buffer nntp-server-buffer))
|
|
|
600 (erase-buffer)))
|
|
|
601 (nntp-encode-text)
|
|
|
602 (process-send-region (nntp-find-connection nntp-server-buffer)
|
|
|
603 (point-min) (point-max))
|
|
|
604 (nntp-retrieve-data
|
|
|
605 nil nntp-address nntp-port-number nntp-server-buffer
|
|
|
606 wait-for nnheader-callback-function))
|
|
|
607
|
|
|
608 (defun nntp-find-connection (buffer)
|
|
|
609 "Find the connection delivering to BUFFER."
|
|
|
610 (let ((alist nntp-connection-alist)
|
|
|
611 (buffer (if (stringp buffer) (get-buffer buffer) buffer))
|
|
|
612 process entry)
|
|
|
613 (while (setq entry (pop alist))
|
|
|
614 (when (eq buffer (cadr entry))
|
|
|
615 (setq process (car entry)
|
|
|
616 alist nil)))
|
|
|
617 (when process
|
|
|
618 (if (memq (process-status process) '(open run))
|
|
|
619 process
|
|
|
620 (when (buffer-name (process-buffer process))
|
|
|
621 (kill-buffer (process-buffer process)))
|
|
|
622 (setq nntp-connection-alist (delq entry nntp-connection-alist))
|
|
|
623 nil))))
|
|
0
|
624
|
|
16
|
625 (defun nntp-find-connection-entry (buffer)
|
|
|
626 "Return the entry for the connection to BUFFER."
|
|
|
627 (assq (nntp-find-connection buffer) nntp-connection-alist))
|
|
|
628
|
|
|
629 (defun nntp-find-connection-buffer (buffer)
|
|
|
630 "Return the process connection buffer tied to BUFFER."
|
|
|
631 (let ((process (nntp-find-connection buffer)))
|
|
|
632 (when process
|
|
|
633 (process-buffer process))))
|
|
|
634
|
|
|
635 (defun nntp-make-process-buffer (buffer)
|
|
|
636 "Create a new, fresh buffer usable for nntp process connections."
|
|
|
637 (save-excursion
|
|
|
638 (set-buffer
|
|
|
639 (generate-new-buffer
|
|
|
640 (format " *server %s %s %s*"
|
|
|
641 nntp-address nntp-port-number
|
|
|
642 (buffer-name (get-buffer buffer)))))
|
|
|
643 (buffer-disable-undo (current-buffer))
|
|
|
644 (set (make-local-variable 'after-change-functions) nil)
|
|
|
645 (set (make-local-variable 'nntp-process-wait-for) nil)
|
|
|
646 (set (make-local-variable 'nntp-process-callback) nil)
|
|
|
647 (set (make-local-variable 'nntp-process-to-buffer) nil)
|
|
|
648 (set (make-local-variable 'nntp-process-start-point) nil)
|
|
|
649 (set (make-local-variable 'nntp-process-decode) nil)
|
|
|
650 (current-buffer)))
|
|
|
651
|
|
|
652 (defun nntp-open-connection (buffer)
|
|
|
653 "Open a connection to PORT on ADDRESS delivering output to BUFFER."
|
|
|
654 (run-hooks 'nntp-prepare-server-hook)
|
|
|
655 (let* ((pbuffer (nntp-make-process-buffer buffer))
|
|
|
656 (process
|
|
|
657 (condition-case ()
|
|
|
658 (funcall nntp-open-connection-function pbuffer)
|
|
|
659 (error nil)
|
|
|
660 (quit nil))))
|
|
|
661 (when process
|
|
|
662 (process-kill-without-query process)
|
|
|
663 (nntp-wait-for process "^.*\n" buffer nil t)
|
|
|
664 (if (memq (process-status process) '(open run))
|
|
|
665 (prog1
|
|
|
666 (caar (push (list process buffer nil) nntp-connection-alist))
|
|
|
667 (push process nntp-connection-list)
|
|
|
668 (save-excursion
|
|
|
669 (set-buffer pbuffer)
|
|
|
670 (nntp-read-server-type)
|
|
|
671 (erase-buffer)
|
|
|
672 (set-buffer nntp-server-buffer)
|
|
|
673 (let ((nnheader-callback-function nil))
|
|
|
674 (run-hooks 'nntp-server-opened-hook))))
|
|
|
675 (when (buffer-name (process-buffer process))
|
|
|
676 (kill-buffer (process-buffer process)))
|
|
|
677 nil))))
|
|
|
678
|
|
|
679 (defun nntp-open-network-stream (buffer)
|
|
|
680 (open-network-stream "nntpd" buffer nntp-address nntp-port-number))
|
|
|
681
|
|
|
682 (defun nntp-read-server-type ()
|
|
|
683 "Find out what the name of the server we have connected to is."
|
|
|
684 ;; Wait for the status string to arrive.
|
|
|
685 (setq nntp-server-type (buffer-string))
|
|
|
686 (let ((alist nntp-server-action-alist)
|
|
|
687 (case-fold-search t)
|
|
|
688 entry)
|
|
|
689 ;; Run server-specific commands.
|
|
|
690 (while alist
|
|
|
691 (setq entry (pop alist))
|
|
|
692 (when (string-match (car entry) nntp-server-type)
|
|
|
693 (if (and (listp (cadr entry))
|
|
|
694 (not (eq 'lambda (caadr entry))))
|
|
|
695 (eval (cadr entry))
|
|
|
696 (funcall (cadr entry)))))))
|
|
0
|
697
|
|
16
|
698 (defun nntp-after-change-function-callback (beg end len)
|
|
|
699 (when nntp-process-callback
|
|
|
700 (save-match-data
|
|
|
701 (if (and (= beg (point-min))
|
|
|
702 (memq (char-after beg) '(?4 ?5)))
|
|
|
703 ;; Report back error messages.
|
|
|
704 (save-excursion
|
|
|
705 (goto-char beg)
|
|
|
706 (if (looking-at "480")
|
|
|
707 (funcall nntp-authinfo-function)
|
|
|
708 (nntp-snarf-error-message)
|
|
|
709 (funcall nntp-process-callback nil)))
|
|
|
710 (goto-char end)
|
|
|
711 (when (and (> (point) nntp-process-start-point)
|
|
|
712 (re-search-backward nntp-process-wait-for
|
|
|
713 nntp-process-start-point t))
|
|
|
714 (when (buffer-name (get-buffer nntp-process-to-buffer))
|
|
|
715 (let ((cur (current-buffer))
|
|
|
716 (start nntp-process-start-point))
|
|
|
717 (save-excursion
|
|
|
718 (set-buffer (get-buffer nntp-process-to-buffer))
|
|
|
719 (goto-char (point-max))
|
|
|
720 (let ((b (point)))
|
|
|
721 (insert-buffer-substring cur start)
|
|
|
722 (narrow-to-region b (point-max))
|
|
|
723 (nntp-decode-text)
|
|
|
724 (widen)))))
|
|
|
725 (goto-char end)
|
|
|
726 (let ((callback nntp-process-callback)
|
|
|
727 (nntp-inside-change-function t))
|
|
|
728 (setq nntp-process-callback nil)
|
|
|
729 (save-excursion
|
|
|
730 (funcall callback (buffer-name
|
|
|
731 (get-buffer nntp-process-to-buffer))))))))))
|
|
0
|
732
|
|
16
|
733 (defun nntp-retrieve-data (command address port buffer
|
|
|
734 &optional wait-for callback decode)
|
|
|
735 "Use COMMAND to retrieve data into BUFFER from PORT on ADDRESS."
|
|
|
736 (let ((process (or (nntp-find-connection buffer)
|
|
|
737 (nntp-open-connection buffer))))
|
|
|
738 (if (not process)
|
|
|
739 (nnheader-report 'nntp "Couldn't open connection to %s" address)
|
|
|
740 (unless (or nntp-inhibit-erase nnheader-callback-function)
|
|
|
741 (save-excursion
|
|
|
742 (set-buffer (process-buffer process))
|
|
|
743 (erase-buffer)))
|
|
|
744 (when command
|
|
|
745 (nntp-send-string process command))
|
|
|
746 (cond
|
|
|
747 ((eq callback 'ignore)
|
|
|
748 t)
|
|
|
749 ((and callback wait-for)
|
|
|
750 (save-excursion
|
|
|
751 (set-buffer (process-buffer process))
|
|
|
752 (unless nntp-inside-change-function
|
|
|
753 (erase-buffer))
|
|
|
754 (setq nntp-process-decode decode
|
|
|
755 nntp-process-to-buffer buffer
|
|
|
756 nntp-process-wait-for wait-for
|
|
|
757 nntp-process-callback callback
|
|
|
758 nntp-process-start-point (point-max)
|
|
|
759 after-change-functions
|
|
|
760 (list 'nntp-after-change-function-callback)))
|
|
|
761 t)
|
|
|
762 (wait-for
|
|
|
763 (nntp-wait-for process wait-for buffer decode))
|
|
|
764 (t t)))))
|
|
|
765
|
|
|
766 (defun nntp-send-string (process string)
|
|
|
767 "Send STRING to PROCESS."
|
|
|
768 (process-send-string process (concat string nntp-end-of-line)))
|
|
0
|
769
|
|
16
|
770 (defun nntp-wait-for (process wait-for buffer &optional decode discard)
|
|
|
771 "Wait for WAIT-FOR to arrive from PROCESS."
|
|
0
|
772 (save-excursion
|
|
16
|
773 (set-buffer (process-buffer process))
|
|
|
774 (goto-char (point-min))
|
|
|
775 (while (or (not (memq (following-char) '(?2 ?3 ?4 ?5)))
|
|
|
776 (looking-at "480"))
|
|
|
777 (when (looking-at "480")
|
|
|
778 (erase-buffer)
|
|
|
779 (funcall nntp-authinfo-function))
|
|
|
780 (nntp-accept-process-output process)
|
|
|
781 (goto-char (point-min)))
|
|
|
782 (prog1
|
|
|
783 (if (looking-at "[45]")
|
|
|
784 (progn
|
|
|
785 (nntp-snarf-error-message)
|
|
|
786 nil)
|
|
|
787 (goto-char (point-max))
|
|
|
788 (let ((limit (point-min)))
|
|
|
789 (while (not (re-search-backward wait-for limit t))
|
|
|
790 ;; We assume that whatever we wait for is less than 1000
|
|
|
791 ;; characters long.
|
|
|
792 (setq limit (max (- (point-max) 1000) (point-min)))
|
|
|
793 (nntp-accept-process-output process)
|
|
|
794 (goto-char (point-max))))
|
|
|
795 (nntp-decode-text (not decode))
|
|
|
796 (unless discard
|
|
|
797 (save-excursion
|
|
|
798 (set-buffer buffer)
|
|
|
799 (goto-char (point-max))
|
|
|
800 (insert-buffer-substring (process-buffer process))
|
|
|
801 ;; Nix out "nntp reading...." message.
|
|
|
802 (when nntp-have-messaged
|
|
|
803 (setq nntp-have-messaged nil)
|
|
|
804 (message ""))
|
|
|
805 t)))
|
|
|
806 (unless discard
|
|
|
807 (erase-buffer)))))
|
|
|
808
|
|
|
809 (defun nntp-snarf-error-message ()
|
|
|
810 "Save the error message in the current buffer."
|
|
|
811 (let ((message (buffer-string)))
|
|
|
812 (while (string-match "[\r\n]+" message)
|
|
|
813 (setq message (replace-match " " t t message)))
|
|
|
814 (nnheader-report 'nntp message)
|
|
|
815 message))
|
|
|
816
|
|
|
817 (defun nntp-accept-process-output (process)
|
|
|
818 "Wait for output from PROCESS and message some dots."
|
|
|
819 (save-excursion
|
|
|
820 (set-buffer (or (nntp-find-connection-buffer nntp-server-buffer)
|
|
|
821 nntp-server-buffer))
|
|
|
822 (let ((len (/ (point-max) 1024)))
|
|
|
823 (unless (< len 10)
|
|
|
824 (setq nntp-have-messaged t)
|
|
|
825 (nnheader-message 7 "nntp read: %dk" len)))
|
|
|
826 (accept-process-output process 1)))
|
|
|
827
|
|
|
828 (defun nntp-accept-response ()
|
|
|
829 "Wait for output from the process that outputs to BUFFER."
|
|
|
830 (nntp-accept-process-output (nntp-find-connection nntp-server-buffer)))
|
|
|
831
|
|
|
832 (defun nntp-possibly-change-group (group server &optional connectionless)
|
|
|
833 (let ((nnheader-callback-function nil))
|
|
|
834 (when server
|
|
|
835 (or (nntp-server-opened server)
|
|
|
836 (nntp-open-server server nil connectionless)))
|
|
|
837
|
|
|
838 (unless connectionless
|
|
|
839 (or (nntp-find-connection nntp-server-buffer)
|
|
|
840 (nntp-open-connection nntp-server-buffer))))
|
|
|
841
|
|
|
842 (when group
|
|
|
843 (let ((entry (nntp-find-connection-entry nntp-server-buffer)))
|
|
|
844 (when (not (equal group (caddr entry)))
|
|
|
845 (save-excursion
|
|
|
846 (set-buffer (process-buffer (car entry)))
|
|
|
847 (erase-buffer)
|
|
|
848 (nntp-send-string (car entry) (concat "GROUP " group))
|
|
|
849 (nntp-wait-for-string "^2.*\n")
|
|
|
850 (setcar (cddr entry) group)
|
|
|
851 (erase-buffer))))))
|
|
|
852
|
|
|
853 (defun nntp-decode-text (&optional cr-only)
|
|
|
854 "Decode the text in the current buffer."
|
|
|
855 (goto-char (point-min))
|
|
|
856 (while (search-forward "\r" nil t)
|
|
|
857 (delete-char -1))
|
|
|
858 (unless cr-only
|
|
|
859 ;; Remove trailing ".\n" end-of-transfer marker.
|
|
0
|
860 (goto-char (point-max))
|
|
|
861 (forward-line -1)
|
|
16
|
862 (when (looking-at ".\n")
|
|
|
863 (delete-char 2))
|
|
|
864 ;; Delete status line.
|
|
0
|
865 (goto-char (point-min))
|
|
16
|
866 (delete-region (point) (progn (forward-line 1) (point)))
|
|
|
867 ;; Remove "." -> ".." encoding.
|
|
0
|
868 (while (search-forward "\n.." nil t)
|
|
|
869 (delete-char -1))))
|
|
|
870
|
|
|
871 (defun nntp-encode-text ()
|
|
16
|
872 "Encode the text in the current buffer."
|
|
0
|
873 (save-excursion
|
|
16
|
874 ;; Replace "." at beginning of line with "..".
|
|
0
|
875 (goto-char (point-min))
|
|
2
|
876 (while (re-search-forward "^\\." nil t)
|
|
0
|
877 (insert "."))
|
|
|
878 (goto-char (point-max))
|
|
16
|
879 ;; Insert newline at the end of the buffer.
|
|
|
880 (unless (bolp)
|
|
|
881 (insert "\n"))
|
|
0
|
882 ;; Insert `.' at end of buffer (end of text mark).
|
|
2
|
883 (goto-char (point-max))
|
|
0
|
884 (insert "." nntp-end-of-line)))
|
|
|
885
|
|
16
|
886 (defun nntp-retrieve-headers-with-xover (articles &optional fetch-old)
|
|
|
887 (set-buffer nntp-server-buffer)
|
|
|
888 (erase-buffer)
|
|
|
889 (cond
|
|
2
|
890
|
|
16
|
891 ;; This server does not talk NOV.
|
|
|
892 ((not nntp-server-xover)
|
|
|
893 nil)
|
|
0
|
894
|
|
16
|
895 ;; We don't care about gaps.
|
|
|
896 ((or (not nntp-nov-gap)
|
|
|
897 fetch-old)
|
|
|
898 (nntp-send-xover-command
|
|
|
899 (if fetch-old
|
|
|
900 (if (numberp fetch-old)
|
|
|
901 (max 1 (- (car articles) fetch-old))
|
|
|
902 1)
|
|
|
903 (car articles))
|
|
|
904 (car (last articles)) 'wait)
|
|
0
|
905
|
|
16
|
906 (goto-char (point-min))
|
|
|
907 (when (looking-at "[1-5][0-9][0-9] ")
|
|
|
908 (delete-region (point) (progn (forward-line 1) (point))))
|
|
|
909 (while (search-forward "\r" nil t)
|
|
|
910 (replace-match "" t t))
|
|
|
911 (goto-char (point-max))
|
|
|
912 (forward-line -1)
|
|
|
913 (when (looking-at "\\.")
|
|
|
914 (delete-region (point) (progn (forward-line 1) (point)))))
|
|
0
|
915
|
|
16
|
916 ;; We do it the hard way. For each gap, an XOVER command is sent
|
|
|
917 ;; to the server. We do not wait for a reply from the server, we
|
|
|
918 ;; just send them off as fast as we can. That means that we have
|
|
|
919 ;; to count the number of responses we get back to find out when we
|
|
|
920 ;; have gotten all we asked for.
|
|
|
921 ((numberp nntp-nov-gap)
|
|
|
922 (let ((count 0)
|
|
|
923 (received 0)
|
|
|
924 (last-point (point-min))
|
|
|
925 (buf nntp-server-buffer)
|
|
|
926 ;;(process-buffer (nntp-find-connection (current-buffer))))
|
|
|
927 first)
|
|
|
928 ;; We have to check `nntp-server-xover'. If it gets set to nil,
|
|
|
929 ;; that means that the server does not understand XOVER, but we
|
|
|
930 ;; won't know that until we try.
|
|
|
931 (while (and nntp-server-xover articles)
|
|
|
932 (setq first (car articles))
|
|
|
933 ;; Search forward until we find a gap, or until we run out of
|
|
|
934 ;; articles.
|
|
|
935 (while (and (cdr articles)
|
|
|
936 (< (- (nth 1 articles) (car articles)) nntp-nov-gap))
|
|
|
937 (setq articles (cdr articles)))
|
|
|
938
|
|
|
939 (when (nntp-send-xover-command first (car articles))
|
|
|
940 (setq articles (cdr articles)
|
|
|
941 count (1+ count))
|
|
0
|
942
|
|
16
|
943 ;; Every 400 requests we have to read the stream in
|
|
|
944 ;; order to avoid deadlocks.
|
|
|
945 (when (or (null articles) ;All requests have been sent.
|
|
|
946 (zerop (% count nntp-maximum-request)))
|
|
|
947 (accept-process-output)
|
|
|
948 ;; On some Emacs versions the preceding function has
|
|
|
949 ;; a tendency to change the buffer. Perhaps. It's
|
|
|
950 ;; quite difficult to reproduce, because it only
|
|
|
951 ;; seems to happen once in a blue moon.
|
|
|
952 (set-buffer buf)
|
|
|
953 (while (progn
|
|
|
954 (goto-char last-point)
|
|
|
955 ;; Count replies.
|
|
|
956 (while (re-search-forward "^[0-9][0-9][0-9] " nil t)
|
|
|
957 (setq received (1+ received)))
|
|
|
958 (setq last-point (point))
|
|
|
959 (< received count))
|
|
|
960 (accept-process-output)
|
|
|
961 (set-buffer buf)))))
|
|
|
962
|
|
|
963 (when nntp-server-xover
|
|
|
964 ;; Wait for the reply from the final command.
|
|
|
965 (goto-char (point-max))
|
|
|
966 (re-search-backward "^[0-9][0-9][0-9] " nil t)
|
|
|
967 (when (looking-at "^[23]")
|
|
|
968 (while (progn
|
|
|
969 (goto-char (point-max))
|
|
|
970 (forward-line -1)
|
|
|
971 (not (looking-at "^\\.\r?\n")))
|
|
|
972 (nntp-accept-response)))
|
|
|
973
|
|
|
974 ;; We remove any "." lines and status lines.
|
|
0
|
975 (goto-char (point-min))
|
|
16
|
976 (while (search-forward "\r" nil t)
|
|
|
977 (delete-char -1))
|
|
|
978 (goto-char (point-min))
|
|
|
979 (delete-matching-lines "^\\.$\\|^[1-5][0-9][0-9] ")
|
|
|
980 ;;(copy-to-buffer nntp-server-buffer (point-min) (point-max))
|
|
0
|
981 t))))
|
|
|
982
|
|
16
|
983 nntp-server-xover)
|
|
|
984
|
|
|
985 (defun nntp-send-xover-command (beg end &optional wait-for-reply)
|
|
|
986 "Send the XOVER command to the server."
|
|
|
987 (let ((range (format "%d-%d" beg end))
|
|
|
988 (nntp-inhibit-erase t))
|
|
|
989 (if (stringp nntp-server-xover)
|
|
|
990 ;; If `nntp-server-xover' is a string, then we just send this
|
|
|
991 ;; command.
|
|
|
992 (if wait-for-reply
|
|
|
993 (nntp-send-command-nodelete
|
|
|
994 "\r?\n\\.\r?\n" nntp-server-xover range)
|
|
|
995 ;; We do not wait for the reply.
|
|
|
996 (nntp-send-command-nodelete "\r?\n\\.\r?\n" nntp-server-xover range))
|
|
|
997 (let ((commands nntp-xover-commands))
|
|
|
998 ;; `nntp-xover-commands' is a list of possible XOVER commands.
|
|
|
999 ;; We try them all until we get at positive response.
|
|
|
1000 (while (and commands (eq nntp-server-xover 'try))
|
|
|
1001 (nntp-send-command-nodelete "\r?\n\\.\r?\n" (car commands) range)
|
|
|
1002 (save-excursion
|
|
|
1003 (set-buffer nntp-server-buffer)
|
|
|
1004 (goto-char (point-min))
|
|
|
1005 (and (looking-at "[23]") ; No error message.
|
|
|
1006 ;; We also have to look at the lines. Some buggy
|
|
|
1007 ;; servers give back simple lines with just the
|
|
|
1008 ;; article number. How... helpful.
|
|
|
1009 (progn
|
|
|
1010 (forward-line 1)
|
|
|
1011 (looking-at "[0-9]+\t...")) ; More text after number.
|
|
|
1012 (setq nntp-server-xover (car commands))))
|
|
|
1013 (setq commands (cdr commands)))
|
|
|
1014 ;; If none of the commands worked, we disable XOVER.
|
|
|
1015 (when (eq nntp-server-xover 'try)
|
|
|
1016 (save-excursion
|
|
|
1017 (set-buffer nntp-server-buffer)
|
|
|
1018 (erase-buffer)
|
|
|
1019 (setq nntp-server-xover nil)))
|
|
|
1020 nntp-server-xover))))
|
|
|
1021
|
|
|
1022 ;;; Alternative connection methods.
|
|
|
1023
|
|
|
1024 (defun nntp-wait-for-string (regexp)
|
|
|
1025 "Wait until string arrives in the buffer."
|
|
|
1026 (let ((buf (current-buffer)))
|
|
|
1027 (goto-char (point-min))
|
|
|
1028 (while (not (re-search-forward regexp nil t))
|
|
|
1029 (accept-process-output (nntp-find-connection nntp-server-buffer))
|
|
|
1030 (set-buffer buf)
|
|
|
1031 (goto-char (point-min)))))
|
|
0
|
1032
|
|
16
|
1033 (defun nntp-open-telnet (buffer)
|
|
|
1034 (save-excursion
|
|
|
1035 (set-buffer buffer)
|
|
|
1036 (erase-buffer)
|
|
|
1037 (let ((proc (start-process
|
|
|
1038 "nntpd" buffer "telnet" "-8"))
|
|
|
1039 (case-fold-search t))
|
|
|
1040 (when (memq (process-status proc) '(open run))
|
|
|
1041 (process-send-string proc "set escape \^X\n")
|
|
|
1042 (process-send-string proc (concat "open " nntp-address "\n"))
|
|
|
1043 (nntp-wait-for-string "^\r*.?login:")
|
|
|
1044 (process-send-string
|
|
|
1045 proc (concat
|
|
|
1046 (or nntp-telnet-user-name
|
|
|
1047 (setq nntp-telnet-user-name (read-string "login: ")))
|
|
|
1048 "\n"))
|
|
|
1049 (nntp-wait-for-string "^\r*.?password:")
|
|
|
1050 (process-send-string
|
|
|
1051 proc (concat
|
|
|
1052 (or nntp-telnet-passwd
|
|
|
1053 (setq nntp-telnet-passwd
|
|
|
1054 (nnmail-read-passwd "Password: ")))
|
|
|
1055 "\n"))
|
|
|
1056 (erase-buffer)
|
|
|
1057 (nntp-wait-for-string "bash\\|\$ *\r?$\\|> *\r?")
|
|
|
1058 (process-send-string
|
|
|
1059 proc (concat (mapconcat 'identity nntp-telnet-parameters " ") "\n"))
|
|
|
1060 (nntp-wait-for-string "^\r*200")
|
|
|
1061 (beginning-of-line)
|
|
|
1062 (delete-region (point-min) (point))
|
|
|
1063 (process-send-string proc "\^]")
|
|
|
1064 (nntp-wait-for-string "^telnet")
|
|
|
1065 (process-send-string proc "mode character\n")
|
|
|
1066 (accept-process-output proc 1)
|
|
|
1067 (sit-for 1)
|
|
|
1068 (goto-char (point-min))
|
|
|
1069 (forward-line 1)
|
|
|
1070 (delete-region (point) (point-max)))
|
|
|
1071 proc)))
|
|
|
1072
|
|
|
1073 (defun nntp-open-rlogin (buffer)
|
|
|
1074 "Open a connection to SERVER using rsh."
|
|
|
1075 (let ((proc (if nntp-rlogin-user-name
|
|
|
1076 (start-process
|
|
|
1077 "nntpd" buffer "rsh"
|
|
|
1078 nntp-address "-l" nntp-rlogin-user-name
|
|
|
1079 (mapconcat 'identity
|
|
|
1080 nntp-rlogin-parameters " "))
|
|
|
1081 (start-process
|
|
|
1082 "nntpd" buffer "rsh" nntp-address
|
|
|
1083 (mapconcat 'identity
|
|
|
1084 nntp-rlogin-parameters " ")))))
|
|
|
1085 (set-buffer buffer)
|
|
|
1086 (nntp-wait-for-string "^\r*200")
|
|
|
1087 (beginning-of-line)
|
|
|
1088 (delete-region (point-min) (point))
|
|
|
1089 proc)
|
|
|
1090 )
|
|
0
|
1091
|
|
|
1092 (defun nntp-find-group-and-number ()
|
|
|
1093 (save-excursion
|
|
|
1094 (save-restriction
|
|
|
1095 (set-buffer nntp-server-buffer)
|
|
|
1096 (narrow-to-region (goto-char (point-min))
|
|
|
1097 (or (search-forward "\n\n" nil t) (point-max)))
|
|
|
1098 (goto-char (point-min))
|
|
|
1099 ;; We first find the number by looking at the status line.
|
|
|
1100 (let ((number (and (looking-at "2[0-9][0-9] +\\([0-9]+\\) ")
|
|
|
1101 (string-to-int
|
|
|
1102 (buffer-substring (match-beginning 1)
|
|
|
1103 (match-end 1)))))
|
|
|
1104 group newsgroups xref)
|
|
|
1105 (and number (zerop number) (setq number nil))
|
|
|
1106 ;; Then we find the group name.
|
|
|
1107 (setq group
|
|
|
1108 (cond
|
|
|
1109 ;; If there is only one group in the Newsgroups header,
|
|
|
1110 ;; then it seems quite likely that this article comes
|
|
|
1111 ;; from that group, I'd say.
|
|
|
1112 ((and (setq newsgroups (mail-fetch-field "newsgroups"))
|
|
|
1113 (not (string-match "," newsgroups)))
|
|
|
1114 newsgroups)
|
|
|
1115 ;; If there is more than one group in the Newsgroups
|
|
|
1116 ;; header, then the Xref header should be filled out.
|
|
|
1117 ;; We hazard a guess that the group that has this
|
|
|
1118 ;; article number in the Xref header is the one we are
|
|
|
1119 ;; looking for. This might very well be wrong if this
|
|
|
1120 ;; article happens to have the same number in several
|
|
|
1121 ;; groups, but that's life.
|
|
|
1122 ((and (setq xref (mail-fetch-field "xref"))
|
|
|
1123 number
|
|
|
1124 (string-match (format "\\([^ :]+\\):%d" number) xref))
|
|
|
1125 (substring xref (match-beginning 1) (match-end 1)))
|
|
|
1126 (t "")))
|
|
16
|
1127 (when (string-match "\r" group)
|
|
0
|
1128 (setq group (substring group 0 (match-beginning 0))))
|
|
|
1129 (cons group number)))))
|
|
|
1130
|
|
|
1131 (provide 'nntp)
|
|
|
1132
|
|
|
1133 ;;; nntp.el ends here
|
