1 | # |
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2 | # Copyright (c) 2004-2007 - Consultas, PKG.fr |
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3 | # |
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4 | # This file is part of A2P. |
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5 | # |
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6 | # A2P is free software; you can redistribute it and/or modify |
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7 | # it under the terms of the GNU General Public License as published by |
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8 | # the Free Software Foundation; either version 2 of the License, or |
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9 | # (at your option) any later version. |
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10 | # |
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11 | # A2P is distributed in the hope that it will be useful, |
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12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | # GNU General Public License for more details. |
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15 | # |
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16 | # You should have received a copy of the GNU General Public License |
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17 | # along with A2P; if not, write to the Free Software |
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18 | # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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19 | # |
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20 | # $Id: Listener.pm 3 2007-10-18 16:20:19Z guillaume $ |
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21 | # |
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22 | |
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23 | package A2P::Listener; |
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24 | |
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25 | # Derived class from Thread.pm |
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26 | use base qw(A2P::Thread Exporter); |
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27 | |
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28 | use strict ; |
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29 | use Socket ; |
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30 | use IO::Socket ; |
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31 | use Time::HiRes qw(ualarm gettimeofday tv_interval) ; |
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32 | use A2P::Globals ; |
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33 | use A2P::Syslog ; |
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34 | use A2P::Com qw( IsCom GetCom comSAY comREQ comCOM comDONE comASK comJOB ); |
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35 | use A2P::Tools qw( ShortID ); |
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36 | use A2P::XML ; |
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37 | |
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38 | BEGIN { |
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39 | our $VERSION = sprintf "%s", q$Rev: 450 $ =~ /(\d[0-9.]+)\s+/ ; |
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40 | } |
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41 | our $VERSION ; |
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42 | |
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43 | my %conn = () ; |
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44 | my %XML = () ; |
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45 | my %timeout = () ; |
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46 | my $clientrequest = 0 ; |
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47 | my @AUTHORIZED = ( INADDR_LOOPBACK ) ; |
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48 | my $ANY_OK = 0 ; |
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49 | my $jobcount = 0 ; |
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50 | |
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51 | my @timer = &gettimeofday() ; |
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52 | |
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53 | ################################################################################ |
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54 | ## Listener handling code ## |
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55 | ################################################################################ |
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56 | sub Do { |
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57 | my $self = shift ; |
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58 | my $ref = shift ; |
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59 | |
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60 | my $Ret = 1 ; |
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61 | |
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62 | my ( @Req , @Ask ); |
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63 | |
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64 | # Handle response from service to currently connected client as comSAY |
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65 | if ( @Req = &IsCom( comSAY , $$ref )) { |
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66 | |
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67 | # Cache the following test as re-used when true |
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68 | my $donetest = ( @Req > 1 ) ? &IsCom( comDONE , $Req[1] ) : 0 ; |
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69 | |
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70 | # Anyway count down job done |
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71 | $donetest and --$jobcount ; |
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72 | |
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73 | if (defined($XML{$Req[0]}) and defined($conn{$Req[0]})) { |
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74 | # Handle XML request |
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75 | $self->XMLEvent(@Req); |
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76 | |
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77 | } elsif (defined($conn{$Req[0]})) { |
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78 | # Handle direct external request |
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79 | &Debug("Con $Req[0]: Sending answer: $Req[1]"); |
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80 | $clientrequest = $Req[0] ; |
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81 | $self->Answer( $Req[1] ); |
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82 | |
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83 | # Reset the time out for this connection |
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84 | $timeout{$Req[0]} = [ &gettimeofday() ] ; |
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85 | |
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86 | } else { |
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87 | &Warn("Connection $1 not available, can't send answer: $2"); |
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88 | delete $XML{$Req[0]} if (defined($XML{$Req[0]})); |
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89 | delete $conn{$Req[0]} ; |
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90 | # Still return to not close non available connection |
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91 | return --$Ret ; |
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92 | } |
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93 | |
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94 | # Then close connection if required |
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95 | if ( $donetest and $CLOSE_CONNECTIONS) { |
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96 | &Info("Con $Req[0]: Closing connection with client"); |
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97 | $self->CloseClient( $Req[0] ); |
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98 | } |
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99 | |
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100 | # Handle client connection as comREQ |
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101 | } elsif ( $clientrequest and @Ask = &IsCom( comASK , $$ref )) { |
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102 | |
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103 | if ( $jobcount < $MAXJOBS ) { |
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104 | my $Con = $clientrequest ; |
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105 | |
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106 | # Necessary for &Answer to know message is for parent |
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107 | $clientrequest = 0 ; |
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108 | |
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109 | &Debug("Con $Con: request to $Ask[0] is '$Ask[1]'"); |
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110 | $self->Answer( $Ask[0] , &GetCom( comASK , $Con => $Ask[1] )); |
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111 | |
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112 | $jobcount ++ ; |
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113 | |
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114 | } else { |
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115 | &Warn("Closing $clientrequest as max jobs count has been reached"); |
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116 | $self->Answer( "ERROR: MAX JOBS COUNT REACHED" ); |
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117 | $self->CloseClient($clientrequest); |
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118 | } |
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119 | |
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120 | # Handle status exchange with parent |
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121 | } elsif ( $$ref =~ m|^STARTED$|i ) { |
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122 | &Debug("I can say service is started"); |
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123 | $self->{STARTED} ++ ; |
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124 | $self->Answer($$ref); |
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125 | |
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126 | } elsif ( $$ref =~ m|^STATUS$|i ) { |
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127 | $self->Answer($self->{STARTED}); |
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128 | &Debug("Returned status '$self->{STARTED}'"); |
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129 | |
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130 | } else { |
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131 | $self->ThisError("Got bad request '$$ref' for listener"); |
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132 | $Ret -- ; |
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133 | } |
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134 | |
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135 | return $Ret ; |
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136 | } |
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137 | |
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138 | sub DoBeforeQuit { |
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139 | my $self = shift ; |
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140 | |
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141 | $clientrequest = 0 ; |
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142 | |
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143 | # Close any client connection |
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144 | map { |
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145 | $clientrequest = $_ ; |
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146 | $self->Answer( "Service is stopping" ); |
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147 | $self->CloseClient( $_ ) |
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148 | } keys(%conn) ; |
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149 | |
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150 | close($self->{SERVER}); |
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151 | |
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152 | unlink($LISTENER); |
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153 | |
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154 | } |
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155 | |
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156 | sub ThreadInit { |
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157 | my $self = shift ; |
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158 | |
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159 | $SIG{'IO'} = sub { &UPSTAT('GOT-SIGNAL-IO'); } ; |
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160 | $SIG{'PIPE'} = sub { &UPSTAT('GOT-SIGNAL-PIPE'); } ; |
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161 | |
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162 | # Open UNIX Socket |
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163 | my $sockaddr = pack_sockaddr_un( $LISTENER ); |
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164 | |
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165 | socket( $self->{SERVER} , PF_UNIX,SOCK_STREAM , 0 ) |
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166 | or return $self->Error("Listener can't create a socket: $!"); |
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167 | |
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168 | bless $self->{SERVER} , "IO::Socket" ; |
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169 | |
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170 | unlink($LISTENER); |
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171 | |
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172 | bind ( $self->{SERVER} , $sockaddr ) |
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173 | or return $self->Error("Listener can't bind server socket: $!"); |
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174 | |
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175 | listen( $self->{SERVER} , SOMAXCONN ) |
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176 | or return $self->Error("Listener can't listen server: $!"); |
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177 | |
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178 | # Handle a list of available servers, only UNIX socket server by default |
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179 | $self->{SERVERS} = [ $self->{SERVER} ]; |
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180 | |
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181 | # Open TCP/IP Socket |
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182 | if ($USE_TCPIP_SOCKET) { |
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183 | # Checking port |
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184 | &Warn("Unsupported port '$USE_TCPIP_PORT' for TCP/IP listening," . |
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185 | " resetting port to default " . ( $USE_TCPIP_PORT = 6400 ) ) |
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186 | unless ( $USE_TCPIP_PORT > 0 and $USE_TCPIP_PORT < 65000 ); |
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187 | |
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188 | my $proto = getprotobyname('tcp'); |
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189 | socket( $self->{TCPSERVER}, PF_INET, SOCK_STREAM, $proto ) |
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190 | or return $self->Error("Listener can't create a TCP/IP socket: $!"); |
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191 | |
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192 | bless $self->{TCPSERVER} , "IO::Socket" ; |
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193 | |
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194 | setsockopt( $self->{TCPSERVER}, SOL_SOCKET, SO_REUSEADDR, pack("l", 1)) |
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195 | or return $self->Error("Can't set TCP/IP REUSEADDR options: $!"); |
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196 | |
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197 | setsockopt( $self->{TCPSERVER}, SOL_SOCKET, SO_KEEPALIVE, pack("l", 1)) |
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198 | or return $self->Error("Can't set TCP/IP KEEPALIVE options: $!"); |
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199 | |
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200 | if ($USE_ONLY_LOOPBACK) { |
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201 | $sockaddr = sockaddr_in( $USE_TCPIP_PORT , INADDR_LOOPBACK ); |
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202 | |
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203 | } else { |
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204 | $sockaddr = sockaddr_in( $USE_TCPIP_PORT , INADDR_ANY ); |
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205 | } |
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206 | bind( $self->{TCPSERVER}, $sockaddr ) |
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207 | or return $self->Error("Can't bind server on TCP/IP socket: $!"); |
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208 | |
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209 | listen( $self->{TCPSERVER} , SOMAXCONN ) |
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210 | or return $self->Error("Can't listen as TCP/IP server: $!"); |
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211 | |
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212 | # Add TCP/IP server to servers list |
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213 | push @{$self->{SERVERS}}, $self->{TCPSERVER} ; |
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214 | |
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215 | @AUTHORIZED = ( INADDR_LOOPBACK ) ; |
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216 | foreach my $host (split(/\s+/,$AUTHORIZED_HOST)) { |
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217 | if ( $host =~ /^any$/i or $host eq '0.0.0.0' ) { |
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218 | $ANY_OK ++ ; |
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219 | next ; |
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220 | } |
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221 | my $packed = inet_aton($host) ; |
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222 | if (defined($packed)) { |
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223 | push @AUTHORIZED , $host ; |
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224 | &Debug("IP ".inet_ntoa($packed)." is authorized to access a2p"); |
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225 | |
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226 | } else { |
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227 | &Warn("Skipping $host as its ip wasn't resolved"); |
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228 | } |
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229 | } |
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230 | } |
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231 | |
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232 | %conn = () ; |
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233 | %timeout = () ; |
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234 | $clientrequest = 0 ; |
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235 | } |
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236 | |
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237 | sub CloseClient { |
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238 | my $self = shift ; |
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239 | my $Conn = shift ; |
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240 | my $Err = shift || 0 ; |
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241 | my $Mesg = shift || "" ; |
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242 | |
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243 | $self->ThisError($Mesg), $self->Answer($Mesg) if $Err ; |
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244 | |
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245 | my $socket = defined($conn{$Conn}) ? $conn{$Conn} : 0 ; |
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246 | |
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247 | if ($socket) { |
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248 | &Info("Con $Conn: Socket shutdown"); |
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249 | shutdown( $socket , 2 ); |
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250 | |
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251 | } else { |
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252 | &Info("Con $Conn: Socket still shutdown"); |
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253 | } |
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254 | delete $conn{$Conn} ; |
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255 | delete $timeout{$Conn} ; |
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256 | } |
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257 | |
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258 | sub NotConnected { |
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259 | my $self = shift ; |
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260 | my $Conn = shift ; |
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261 | my $socket = defined($conn{$Conn}) ? $conn{$Conn} : 0 ; |
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262 | if ($socket) { |
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263 | $! = 0 ; |
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264 | my $scheck = '' ; |
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265 | vec($scheck,fileno($socket),1) = 1; |
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266 | unless (select( $scheck , undef , undef, 0)) { |
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267 | &UPSTAT('IS-CONNECTED'); |
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268 | &UPSTAT('CON-errno-'.int($!)."-$!") if $! ; |
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269 | return 0 ; |
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270 | } |
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271 | &Debug("Con $Conn: ".int($!)." - $!") if $! ; |
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272 | } |
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273 | |
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274 | &UPSTAT('IS-DISCONNECTED'); |
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275 | &Debug("Con $Conn: Connection lost"); |
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276 | return 1 ; |
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277 | } |
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278 | |
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279 | sub GetRequest { |
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280 | my $self = shift ; |
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281 | my $Requests = shift ; |
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282 | my $Ret = undef ; |
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283 | |
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284 | # Check to touch LISTENER time access |
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285 | if ( @timer and &tv_interval(\@timer) > 10 ) { |
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286 | if ( utime undef, undef, $LISTENER ) { |
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287 | @timer = &gettimeofday() ; |
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288 | |
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289 | } else { |
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290 | &Warn("Can't touch '$LISTENER' socket: $!"); |
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291 | # Won't touch anymore the socket after one error |
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292 | @timer = () ; |
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293 | } |
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294 | } |
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295 | |
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296 | # Check connections time out |
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297 | map { |
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298 | if ( &tv_interval($timeout{$_}) > $CLIENT_TIMEOUT ) { |
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299 | $clientrequest = $_ ; |
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300 | if ($self->Answer("ANSWERED REQUEST TIME OUT")) { |
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301 | &Info("Reach time out for connection $_"); |
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302 | $self->CloseClient($_,$CLIENT_TIMEOUT, |
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303 | "ANSWERED REQUEST TIME OUT for $_ client"); |
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304 | $! = 0 ; |
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305 | |
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306 | } else { |
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307 | &Debug("Deleting still closed $_ connection"); |
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308 | $self->CloseClient($_); |
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309 | } |
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310 | |
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311 | } elsif ($self->NotConnected($_)) { |
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312 | &Debug("Deleting lost $_ connection"); |
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313 | $self->CloseClient($_); |
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314 | } |
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315 | } keys(%timeout); |
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316 | |
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317 | # Reset client request id flag |
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318 | $clientrequest = 0 ; |
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319 | |
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320 | my ( $Client , $addr ); |
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321 | if ( ! defined($Ret = $self->ReadSock($Requests)) |
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322 | and keys(%conn) < $MAXCONNECTIONS ) { |
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323 | |
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324 | foreach my $Server ( @{$self->{SERVERS}} ) { |
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325 | |
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326 | # Accept should not be blocking |
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327 | $Server->blocking(0); |
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328 | |
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329 | if ( $addr = accept($Client,$Server) ) { |
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330 | |
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331 | bless $Client , "IO::Socket" ; |
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332 | $Client->autoflush(1); |
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333 | |
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334 | # Check client as the right to access us |
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335 | # in the case of TCP/IP server |
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336 | if ( $USE_TCPIP_SOCKET and $Server == $self->{TCPSERVER} ) { |
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337 | my($port,$ip) = sockaddr_in($addr); |
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338 | # If use_only_loopback is set, it is safe to accept |
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339 | # Otherwise check other authorized ips |
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340 | unless ( $USE_ONLY_LOOPBACK or $ANY_OK |
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341 | or grep { /^$ip$/ } @AUTHORIZED ) { |
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342 | &Warn("Blocking $ip without access authorization"); |
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343 | shutdown( $Client , 2 ); |
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344 | next ; |
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345 | } |
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346 | } |
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347 | |
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348 | my $ConnId ; |
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349 | # ConnId is unique in one listener thread |
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350 | do { |
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351 | $ConnId = "CONN" . uc(&ShortID(5)) |
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352 | } until ( ! defined($conn{$ConnId}) ); |
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353 | |
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354 | &Info("Con $ConnId: Got connection with a client"); |
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355 | &Debug("Got connection $ConnId on " . $Client); |
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356 | |
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357 | $Ret = $self->ReadSock($Client) ; |
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358 | $conn{$ConnId} = $Client ; |
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359 | $timeout{$ConnId} = [ &gettimeofday() ] ; |
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360 | $clientrequest = $ConnId if (defined($Ret)); |
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361 | |
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362 | last ; |
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363 | } |
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364 | } |
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365 | } |
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366 | |
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367 | # Now eventually get request from opened connections |
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368 | if (!defined($Ret)) { |
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369 | foreach my $ConnId (keys(%conn)) { |
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370 | $Client = $conn{$ConnId} ; |
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371 | if (defined($Ret = $self->ReadSock($Client))) { |
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372 | $clientrequest = $ConnId ; |
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373 | last ; |
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374 | } |
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375 | } |
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376 | } |
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377 | |
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378 | return $MUSTQUIT ? 1 : $Ret ; |
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379 | } |
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380 | |
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381 | sub XML { |
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382 | my $self = shift ; |
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383 | my $buffer = shift || "" ; |
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384 | |
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385 | # Handle external XML request |
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386 | if ( $clientrequest and $jobcount < $MAXJOBS) { |
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387 | &Debug("Got an external XML request"); |
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388 | |
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389 | # We have to concatenate any other lines until got a valid xml request |
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390 | # 1. First create XML object |
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391 | my $XML = $XML{$clientrequest} = new A2P::XML(\$buffer); |
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392 | |
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393 | # 2. Concatenate on the buffer to get the all XML |
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394 | # Remove any tag corresponding to XML version |
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395 | $buffer =~ s|<\?xml\s.*\?>|| ; |
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396 | |
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397 | my $Client = $conn{$clientrequest} ; |
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398 | $buffer = $self->ReadSock($Client) unless ( $buffer =~ m|^<\w+| ); |
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399 | |
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400 | # Found XML root node to know how XML should be closed |
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401 | my ( $root ) = $buffer =~ m|^<(\w+)\s*[^>]*/*>| ; |
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402 | |
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403 | unless (defined($root) and $root) { |
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404 | $self->ThisError("Can't find XML root in '$buffer' XML request"); |
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405 | $buffer = "<a2p/>" ; |
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406 | $XML->isA2P ; |
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407 | $XML->A2Pmessage("A2P-ABTERM = NO XML ROOT FOUND"); |
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408 | $self->XMLanswer($clientrequest); |
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409 | $self->CloseClient($clientrequest); |
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410 | return 0 ; |
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411 | } |
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412 | |
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413 | &Debug("'$root' XML root node found"); |
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414 | |
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415 | # Only concatenate if we don't get empty root node |
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416 | unless ( $buffer =~ m|^<($root)[^>]*/>| ) { |
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417 | my $line = "" ; |
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418 | |
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419 | # Get next content on socket until agregation seems finalized as xml |
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420 | while (defined($Client) and $Client |
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421 | and defined($line) and $line !~ m|</$root>| ) { |
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422 | |
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423 | # Loop on socket |
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424 | $line = $self->ReadSock($Client) ; |
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425 | |
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426 | &Debug("Concatenate XML with '$line'"); |
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427 | $XML->concatenate($line . "\n"); |
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428 | } |
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429 | } |
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430 | |
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431 | &Debug("Full request is '$buffer'") unless (length($buffer)>100); |
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432 | |
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433 | unless ( $XML->isA2P ) { |
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434 | my $abterm = "XML request is not for me" ; |
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435 | $self->ThisError($abterm); |
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436 | $XML->A2Pmessage("A2P-ABTERM = $abterm"); |
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437 | $XML->A2Pabterm ; |
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438 | $self->XMLanswer($clientrequest); |
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439 | $self->CloseClient($clientrequest); |
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440 | return 0 ; |
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441 | } |
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442 | |
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443 | if ( $XML->getPATH ) { |
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444 | |
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445 | my $file = $XML->getPATH ; |
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446 | if ( -e $file ) { |
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447 | # Ask to do the job |
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448 | my $request = &GetCom( comASK , |
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449 | JobManager => &GetCom( comJOB , $XML->getid , $file )); |
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450 | $self->Do( \$request ); # This also update jobcount |
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451 | |
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452 | } else { |
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453 | my $abterm = "Can't convert not existing '$file'" ; |
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454 | $self->ThisError($abterm); |
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455 | $XML->A2Pmessage("A2P-ABTERM = $abterm"); |
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456 | $XML->A2Pabterm ; |
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457 | $self->XMLanswer($clientrequest); |
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458 | $self->CloseClient($clientrequest); |
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459 | return 0 ; |
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460 | } |
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461 | |
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462 | } else { |
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463 | my $abterm = "Mal-formed XML request not supported" ; |
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464 | $self->ThisError($abterm); |
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465 | $XML->A2Pmessage("A2P-ABTERM = $abterm"); |
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466 | $XML->A2Pabterm ; |
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467 | $self->XMLanswer($clientrequest); |
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468 | $self->CloseClient($clientrequest); |
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469 | return 0 ; |
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470 | } |
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471 | |
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472 | } elsif ($clientrequest) { |
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473 | &Warn("Closing $clientrequest as max jobs count has been reached"); |
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474 | &Debug("Closing $clientrequest as $jobcount jobcount >= to $MAXJOBS"); |
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475 | $buffer = "<a2p/>" ; |
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476 | my $XML = $XML{$clientrequest} = new A2P::XML(\$buffer); |
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477 | $XML->isA2P ; |
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478 | $XML->A2Pmessage("A2P-ABTERM = MAX JOBS COUNT REACHED ON A2P SERVICE"); |
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479 | $self->XMLanswer($clientrequest); |
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480 | $self->CloseClient($clientrequest); |
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481 | |
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482 | } else { |
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483 | $self->ThisError("[DEV] Unexpected such '$buffer' XML request"); |
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484 | } |
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485 | } |
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486 | |
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487 | my $qr_version_event = |
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488 | qr/Step 2, Processing AFP JOB '([-a-zA-Z0-9._]+)' with a2p v([0-9.]+)/ ; |
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489 | |
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490 | sub XMLEvent { |
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491 | my $self = shift ; |
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492 | my $conn = shift ; |
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493 | my $event = shift ; |
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494 | |
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495 | unless (defined($XML{$conn})) { |
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496 | &Warn("Can't handle '$event' XML event as '$conn' XML is destroyed"); |
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497 | return 0 ; |
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498 | } |
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499 | |
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500 | my $XML = $XML{$conn} ; |
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501 | |
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502 | # Get version and jobname if available |
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503 | # Pattern: Step 2, Starting AFP JOB '$jobname' with a2p v$version |
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504 | return $XML->A2Pmessage( "A2P-Version = $2", "A2P-Jobname = $1" ) |
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505 | if ( $event =~ $qr_version_event ); |
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506 | |
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507 | # Log any ABTERM event |
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508 | if ( $event =~ /abterm:\s*(.*)$/i ) { |
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509 | $XML->A2Pmessage("A2P-ABTERM = $1"); |
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510 | return $XML->A2Pabterm ; |
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511 | } |
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512 | |
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513 | # Get zipfile |
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514 | return $XML->A2Pmessage("A2P-Zipfile = $1") |
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515 | if ( $event =~ /ZIPFILE=(.*)$/ ); |
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516 | |
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517 | # Get PDF for each task |
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518 | # Pattern: Generating PDF '$PDFNAME' |
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519 | return $XML->A2Ppdf( $1 ) |
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520 | if ( $event =~ /Generating PDF '([-a-zA-Z0-9._]+\.pdf)'/ ); |
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521 | |
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522 | # Finally check state and return answer to client |
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523 | if ( $event =~ /JOBSTATUS:\s+(\w+)/ ) { |
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524 | my $state = $1 ; |
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525 | $XML->A2Pmessage( "A2P-State = $state" ); |
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526 | $XML->setstate( $state ); |
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527 | $self->XMLanswer($conn); |
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528 | |
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529 | } else { |
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530 | &Debug("Forgetting info '$event'"); |
---|
531 | } |
---|
532 | } |
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533 | |
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534 | sub XMLanswer { |
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535 | # Return answer and remove XML object |
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536 | my $self = shift ; |
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537 | my $conn = shift ; |
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538 | my $Socket = $conn{$conn} ; |
---|
539 | my $XML = $XML{$conn} ; |
---|
540 | if (defined($Socket) and defined($XML)) { |
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541 | $Socket->autoflush(1); |
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542 | print $Socket $XML->A2Panswer(), "\n"; |
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543 | |
---|
544 | } elsif (!defined($Socket)) { |
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545 | &Warn("Can't send XML answer on '$conn' connection as it seems lost"); |
---|
546 | |
---|
547 | } else { |
---|
548 | &Warn("Can't send XML answer on no XML was defined"); |
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549 | } |
---|
550 | delete $XML{$conn} ; |
---|
551 | } |
---|
552 | |
---|
553 | sub Answer { |
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554 | my $self = shift ; |
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555 | |
---|
556 | my $Socket = $clientrequest ? $conn{$clientrequest} : $self->{DADDY} ; |
---|
557 | return 0 unless (defined($Socket)); |
---|
558 | |
---|
559 | my @Answer = |
---|
560 | &GetCom( comCOM , $$ => ( @_ > 1 ? &GetCom( comREQ , @_ ) : $_[0] )); |
---|
561 | |
---|
562 | my $Ret = $clientrequest ? print $Socket @Answer,"\n" : |
---|
563 | $self->PrintSock( $Socket, @Answer ) |
---|
564 | or &Debug("Listener answer not sent, ".__PACKAGE__. |
---|
565 | ", l. ".__LINE__." ($!-$?-$@)"); |
---|
566 | |
---|
567 | &Debug("Bad listener answer request: @_") if ( $#_ > 1); |
---|
568 | |
---|
569 | return $Ret ; |
---|
570 | } |
---|
571 | |
---|
572 | &Debug("Module " . __PACKAGE__ . " v$VERSION loaded"); |
---|
573 | |
---|
574 | 1; |
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