1 | ############################################################################## |
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2 | # |
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3 | # This library is free software; you can redistribute it and/or |
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4 | # modify it under the terms of the GNU Library General Public |
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5 | # License as published by the Free Software Foundation; either |
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6 | # version 2 of the License, or (at your option) any later version. |
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7 | # |
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8 | # This library is distributed in the hope that it will be useful, |
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9 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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10 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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11 | # Library General Public License for more details. |
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12 | # |
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13 | # You should have received a copy of the GNU Library General Public |
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14 | # License along with this library; if not, write to the |
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15 | # Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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16 | # Boston, MA 02111-1307, USA. |
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17 | # |
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18 | # Copyright (C) 1998-2004 Jabber Software Foundation http://jabber.org/ |
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19 | # |
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20 | ############################################################################## |
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21 | |
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22 | package Net::XMPP::Connection; |
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23 | |
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24 | =head1 NAME |
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25 | |
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26 | Net::XMPP::Connection - XMPP Connection Module |
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27 | |
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28 | =head1 SYNOPSIS |
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29 | |
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30 | Net::XMPP::Connection is a private package that serves as a basis |
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31 | for anything wanting to open a socket connection to a server. |
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32 | |
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33 | =head1 DESCRIPTION |
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34 | |
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35 | This module is not meant to be used directly. You should be using |
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36 | either Net::XMPP::Client, or another package that inherits from |
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37 | Net::XMPP::Connection. |
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38 | |
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39 | =head1 AUTHOR |
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40 | |
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41 | Ryan Eatmon |
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42 | |
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43 | =head1 COPYRIGHT |
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44 | |
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45 | This module is free software; you can redistribute it and/or modify |
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46 | it under the same terms as Perl itself. |
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47 | |
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48 | =cut |
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49 | |
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50 | use strict; |
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51 | use Carp; |
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52 | use base qw( Net::XMPP::Protocol ); |
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53 | |
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54 | |
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55 | sub new |
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56 | { |
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57 | my $proto = shift; |
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58 | my $self = { }; |
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59 | |
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60 | bless($self, $proto); |
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61 | |
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62 | $self->init(@_); |
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63 | |
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64 | $self->{SERVER}->{namespace} = "unknown"; |
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65 | |
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66 | return $self; |
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67 | } |
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68 | |
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69 | |
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70 | ############################################################################## |
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71 | # |
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72 | # init - do all of the heavy lifting for a generic connection. |
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73 | # |
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74 | ############################################################################## |
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75 | sub init |
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76 | { |
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77 | my $self = shift; |
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78 | |
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79 | $self->{ARGS} = {}; |
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80 | while($#_ >= 0) { $self->{ARGS}->{ lc(pop(@_)) } = pop(@_); } |
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81 | |
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82 | $self->{DEBUG} = |
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83 | new Net::XMPP::Debug(level => $self->_arg("debuglevel",-1), |
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84 | file => $self->_arg("debugfile","stdout"), |
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85 | time => $self->_arg("debugtime",0), |
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86 | setdefault => 1, |
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87 | header => "XMPP::Conn" |
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88 | ); |
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89 | |
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90 | $self->{SERVER} = {}; |
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91 | $self->{SERVER}->{hostname} = "localhost"; |
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92 | $self->{SERVER}->{tls} = $self->_arg("tls",0); |
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93 | $self->{SERVER}->{ssl} = $self->_arg("ssl",0); |
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94 | $self->{SERVER}->{connectiontype} = $self->_arg("connectiontype","tcpip"); |
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95 | |
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96 | $self->{CONNECTED} = 0; |
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97 | $self->{DISCONNECTED} = 0; |
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98 | |
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99 | $self->{STREAM} = |
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100 | new XML::Stream(style => "node", |
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101 | debugfh => $self->{DEBUG}->GetHandle(), |
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102 | debuglevel => $self->{DEBUG}->GetLevel(), |
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103 | debugtime => $self->{DEBUG}->GetTime(), |
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104 | ); |
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105 | |
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106 | $self->{RCVDB}->{currentID} = 0; |
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107 | |
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108 | $self->callbackInit(); |
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109 | |
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110 | return $self; |
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111 | } |
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112 | |
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113 | |
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114 | ############################################################################## |
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115 | # |
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116 | # Connect - Takes a has and opens the connection to the specified server. |
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117 | # Registers CallBack as the main callback for all packets from |
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118 | # the server. |
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119 | # |
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120 | # NOTE: Need to add some error handling if the connection is |
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121 | # not made because the server hostname is wrong or whatnot. |
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122 | # |
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123 | ############################################################################## |
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124 | sub Connect |
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125 | { |
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126 | my $self = shift; |
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127 | |
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128 | while($#_ >= 0) { $self->{SERVER}{ lc pop(@_) } = pop(@_); } |
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129 | |
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130 | $self->{SERVER}->{timeout} = 10 unless exists($self->{SERVER}->{timeout}); |
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131 | |
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132 | $self->{DEBUG}->Log1("Connect: host($self->{SERVER}->{hostname}:$self->{SERVER}->{port}) namespace($self->{SERVER}->{namespace})"); |
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133 | $self->{DEBUG}->Log1("Connect: timeout($self->{SERVER}->{timeout})"); |
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134 | |
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135 | delete($self->{SESSION}); |
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136 | $self->{SESSION} = |
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137 | $self->{STREAM}-> |
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138 | Connect(hostname => $self->{SERVER}->{hostname}, |
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139 | port => $self->{SERVER}->{port}, |
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140 | namespace => $self->{SERVER}->{namespace}, |
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141 | connectiontype => $self->{SERVER}->{connectiontype}, |
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142 | timeout => $self->{SERVER}->{timeout}, |
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143 | ssl => $self->{SERVER}->{ssl}, #LEGACY |
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144 | (defined($self->{SERVER}->{componentname}) ? |
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145 | (to => $self->{SERVER}->{componentname}) : |
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146 | () |
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147 | ), |
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148 | ); |
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149 | |
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150 | if ($self->{SESSION}) |
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151 | { |
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152 | $self->{DEBUG}->Log1("Connect: connection made"); |
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153 | |
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154 | $self->{STREAM}->SetCallBacks(node=>sub{ $self->CallBack(@_) }); |
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155 | $self->{CONNECTED} = 1; |
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156 | |
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157 | if (exists($self->{SESSION}->{version}) && |
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158 | ($self->{SESSION}->{version} ne "")) |
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159 | { |
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160 | my $tls = $self->GetStreamFeature("xmpp-tls"); |
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161 | if (defined($tls) && $self->{SERVER}->{tls}) |
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162 | { |
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163 | $self->{SESSION} = |
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164 | $self->{STREAM}->StartTLS( |
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165 | $self->{SESSION}->{id}, |
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166 | $self->{SERVER}->{timeout}, |
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167 | ); |
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168 | } |
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169 | elsif (defined($tls) && ($tls eq "required")) |
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170 | { |
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171 | $self->SetErrorCode("The server requires us to use TLS, but you did not specify that\nTLS was an option."); |
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172 | return; |
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173 | } |
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174 | } |
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175 | |
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176 | return 1; |
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177 | } |
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178 | else |
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179 | { |
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180 | $self->SetErrorCode($self->{STREAM}->GetErrorCode()); |
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181 | return; |
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182 | } |
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183 | } |
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184 | |
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185 | |
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186 | ############################################################################## |
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187 | # |
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188 | # Connected - returns 1 if the Transport is connected to the server, 0 |
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189 | # otherwise. |
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190 | # |
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191 | ############################################################################## |
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192 | sub Connected |
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193 | { |
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194 | my $self = shift; |
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195 | |
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196 | $self->{DEBUG}->Log1("Connected: ($self->{CONNECTED})"); |
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197 | return $self->{CONNECTED}; |
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198 | } |
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199 | |
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200 | |
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201 | ############################################################################## |
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202 | # |
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203 | # Disconnect - Sends the string to close the connection cleanly. |
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204 | # |
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205 | ############################################################################## |
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206 | sub Disconnect |
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207 | { |
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208 | my $self = shift; |
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209 | |
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210 | $self->{STREAM}->Disconnect($self->{SESSION}->{id}) |
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211 | if ($self->{CONNECTED} == 1); |
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212 | $self->{STREAM}->SetCallBacks(node=>undef); |
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213 | $self->{CONNECTED} = 0; |
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214 | $self->{DISCONNECTED} = 1; |
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215 | $self->{DEBUG}->Log1("Disconnect: bye bye"); |
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216 | } |
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217 | |
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218 | |
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219 | ############################################################################## |
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220 | # |
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221 | # Execute - generic inner loop to listen for incoming messages, stay |
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222 | # connected to the server, and do all the right things. It |
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223 | # calls a couple of callbacks for the user to put hooks into |
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224 | # place if they choose to. |
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225 | # |
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226 | ############################################################################## |
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227 | sub Execute |
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228 | { |
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229 | my $self = shift; |
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230 | my %args; |
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231 | while($#_ >= 0) { $args{ lc pop(@_) } = pop(@_); } |
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232 | |
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233 | $args{connectiontype} = "tcpip" unless exists($args{connectiontype}); |
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234 | $args{connectattempts} = -1 unless exists($args{connectattempts}); |
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235 | $args{connectsleep} = 5 unless exists($args{connectsleep}); |
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236 | $args{register} = 0 unless exists($args{register}); |
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237 | |
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238 | my %connect = $self->_connect_args(%args); |
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239 | |
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240 | $self->{DEBUG}->Log1("Execute: begin"); |
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241 | |
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242 | my $connectAttempt = $args{connectattempts}; |
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243 | |
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244 | while(($connectAttempt == -1) || ($connectAttempt > 0)) |
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245 | { |
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246 | |
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247 | $self->{DEBUG}->Log1("Execute: Attempt to connect ($connectAttempt)"); |
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248 | |
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249 | my $status = $self->Connect(%connect); |
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250 | |
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251 | if (!(defined($status))) |
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252 | { |
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253 | $self->{DEBUG}->Log1("Execute: Server is not answering. (".$self->GetErrorCode().")"); |
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254 | $self->{CONNECTED} = 0; |
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255 | |
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256 | $connectAttempt-- unless ($connectAttempt == -1); |
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257 | sleep($args{connectsleep}); |
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258 | next; |
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259 | } |
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260 | |
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261 | $self->{DEBUG}->Log1("Execute: Connected..."); |
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262 | &{$self->{CB}->{onconnect}}() if exists($self->{CB}->{onconnect}); |
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263 | |
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264 | my @result = $self->_auth(%args); |
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265 | |
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266 | if (@result && $result[0] ne "ok") |
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267 | { |
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268 | $self->{DEBUG}->Log1("Execute: Could not auth with server: ($result[0]: $result[1])"); |
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269 | &{$self->{CB}->{onauthfail}}() |
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270 | if exists($self->{CB}->{onauthfail}); |
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271 | |
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272 | if (!$self->{SERVER}->{allow_register} || $args{register} == 0) |
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273 | { |
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274 | $self->{DEBUG}->Log1("Execute: Register turned off. Exiting."); |
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275 | $self->Disconnect(); |
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276 | &{$self->{CB}->{ondisconnect}}() |
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277 | if exists($self->{CB}->{ondisconnect}); |
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278 | $connectAttempt = 0; |
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279 | } |
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280 | else |
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281 | { |
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282 | @result = $self->_register(%args); |
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283 | |
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284 | if ($result[0] ne "ok") |
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285 | { |
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286 | $self->{DEBUG}->Log1("Execute: Register failed. Exiting."); |
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287 | &{$self->{CB}->{onregisterfail}}() |
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288 | if exists($self->{CB}->{onregisterfail}); |
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289 | |
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290 | $self->Disconnect(); |
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291 | &{$self->{CB}->{ondisconnect}}() |
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292 | if exists($self->{CB}->{ondisconnect}); |
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293 | $connectAttempt = 0; |
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294 | } |
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295 | else |
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296 | { |
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297 | &{$self->{CB}->{onauth}}() |
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298 | if exists($self->{CB}->{onauth}); |
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299 | } |
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300 | } |
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301 | } |
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302 | else |
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303 | { |
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304 | &{$self->{CB}->{onauth}}() |
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305 | if exists($self->{CB}->{onauth}); |
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306 | } |
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307 | |
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308 | while($self->Connected()) |
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309 | { |
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310 | |
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311 | while(defined($status = $self->Process($args{processtimeout}))) |
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312 | { |
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313 | &{$self->{CB}->{onprocess}}() |
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314 | if exists($self->{CB}->{onprocess}); |
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315 | } |
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316 | |
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317 | if (!defined($status)) |
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318 | { |
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319 | $self->Disconnect(); |
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320 | $self->{DEBUG}->Log1("Execute: Connection to server lost..."); |
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321 | &{$self->{CB}->{ondisconnect}}() |
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322 | if exists($self->{CB}->{ondisconnect}); |
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323 | |
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324 | $connectAttempt = $args{connectattempts}; |
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325 | next; |
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326 | } |
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327 | } |
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328 | |
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329 | last if $self->{DISCONNECTED}; |
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330 | } |
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331 | |
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332 | $self->{DEBUG}->Log1("Execute: end"); |
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333 | &{$self->{CB}->{onexit}}() if exists($self->{CB}->{onexit}); |
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334 | } |
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335 | |
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336 | |
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337 | ############################################################################### |
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338 | # |
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339 | # Process - If a timeout value is specified then the function will wait |
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340 | # that long before returning. This is useful for apps that |
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341 | # need to handle other processing while still waiting for |
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342 | # packets. If no timeout is listed then the function waits |
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343 | # until a packet is returned. Either way the function exits |
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344 | # as soon as a packet is returned. |
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345 | # |
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346 | ############################################################################### |
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347 | sub Process |
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348 | { |
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349 | my $self = shift; |
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350 | my ($timeout) = @_; |
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351 | my %status; |
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352 | |
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353 | if (exists($self->{PROCESSERROR}) && ($self->{PROCESSERROR} == 1)) |
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354 | { |
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355 | croak("There was an error in the last call to Process that you did not check for and\nhandle. You should always check the output of the Process call. If it was\nundef then there was a fatal error that you need to check. There is an error\nin your program"); |
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356 | } |
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357 | |
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358 | $self->{DEBUG}->Log1("Process: timeout($timeout)") if defined($timeout); |
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359 | |
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360 | if (!defined($timeout) || ($timeout eq "")) |
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361 | { |
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362 | while(1) |
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363 | { |
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364 | %status = $self->{STREAM}->Process(); |
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365 | $self->{DEBUG}->Log1("Process: status($status{$self->{SESSION}->{id}})"); |
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366 | last if ($status{$self->{SESSION}->{id}} != 0); |
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367 | select(undef,undef,undef,.25); |
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368 | } |
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369 | $self->{DEBUG}->Log1("Process: return($status{$self->{SESSION}->{id}})"); |
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370 | if ($status{$self->{SESSION}->{id}} == -1) |
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371 | { |
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372 | $self->{PROCESSERROR} = 1; |
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373 | return; |
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374 | } |
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375 | else |
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376 | { |
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377 | return $status{$self->{SESSION}->{id}}; |
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378 | } |
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379 | } |
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380 | else |
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381 | { |
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382 | %status = $self->{STREAM}->Process($timeout); |
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383 | if ($status{$self->{SESSION}->{id}} == -1) |
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384 | { |
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385 | $self->{PROCESSERROR} = 1; |
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386 | return; |
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387 | } |
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388 | else |
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389 | { |
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390 | return $status{$self->{SESSION}->{id}}; |
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391 | } |
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392 | } |
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393 | } |
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394 | |
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395 | |
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396 | |
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397 | |
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398 | ############################################################################## |
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399 | #+---------------------------------------------------------------------------- |
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400 | #| |
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401 | #| Overloadable Methods |
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402 | #| |
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403 | #+---------------------------------------------------------------------------- |
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404 | ############################################################################## |
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405 | |
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406 | ############################################################################## |
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407 | # |
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408 | # _auth - Overload this method to provide the authentication method for your |
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409 | # type of connection. |
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410 | # |
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411 | ############################################################################## |
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412 | sub _auth |
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413 | { |
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414 | my $self = shift; |
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415 | croak("You must override the _auth method."); |
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416 | } |
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417 | |
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418 | |
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419 | ############################################################################## |
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420 | # |
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421 | # _connect_args - The Connect function that the Execute loop uses needs |
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422 | # certain args. This method lets you map the Execute args |
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423 | # into the Connect args for your Connection type. |
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424 | # |
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425 | ############################################################################## |
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426 | sub _connect_args |
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427 | { |
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428 | my $self = shift; |
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429 | my (%args) = @_; |
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430 | |
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431 | return %args; |
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432 | } |
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433 | |
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434 | |
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435 | ############################################################################## |
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436 | # |
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437 | # _register - overload this method if you need your connection to register |
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438 | # with the server. |
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439 | # |
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440 | ############################################################################## |
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441 | sub _register |
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442 | { |
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443 | my $self = shift; |
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444 | return ( "ok" ,"" ); |
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445 | } |
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446 | |
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447 | |
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448 | |
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449 | |
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450 | ############################################################################## |
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451 | #+---------------------------------------------------------------------------- |
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452 | #| |
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453 | #| Private Helpers |
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454 | #| |
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455 | #+---------------------------------------------------------------------------- |
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456 | ############################################################################## |
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457 | |
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458 | sub _arg |
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459 | { |
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460 | my $self = shift; |
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461 | my $arg = shift; |
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462 | my $default = shift; |
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463 | |
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464 | return exists($self->{ARGS}->{$arg}) ? $self->{ARGS}->{$arg} : $default; |
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465 | } |
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466 | |
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467 | |
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468 | 1; |
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