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# -*- perl -*- |
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# pRPC - Perl RPC, package for writing simple, RPC like clients and |
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# servers |
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# RPC::pClient.pm is the module for writing the pRPC client. |
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# Copyright (c) 1997 Jochen Wiedmann |
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# |
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# You may distribute under the terms of either the GNU General Public |
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# License or the Artistic License, as specified in the Perl README file. |
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# |
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# Author: Jochen Wiedmann |
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# Am Eisteich 9 |
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# 72555 Metzingen |
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# Germany |
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# Email: wiedmann@neckar-alb.de |
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# Phone: +49 7123 14881 |
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# |
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# |
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# $Id: pClient.pm,v 0.1001 1997/09/14 22:53:27 joe Exp $ |
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# |
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package RPC::pClient; |
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use strict; |
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use Carp; |
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420
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use vars qw($VERSION @ISA @EXPORT @EXPORT_OK $AUTOLOAD); |
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1590
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require Exporter; |
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require DynaLoader; |
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@ISA = qw(Exporter DynaLoader); |
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# Items to export into callers namespace by default. Note: do not export |
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# names by default without a very good reason. Use EXPORT_OK instead. |
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# Do not simply export all your public functions/methods/constants. |
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@EXPORT = qw( |
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); |
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$VERSION = '0.1002'; |
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use POSIX(); |
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use Sys::Syslog(); |
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122217
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use IO::Socket(); |
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use Storable(); |
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use Socket(); |
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sub error ($) { my $self = shift; $self->{'error'}; } |
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53
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54
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############################################################################ |
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# |
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# Name: new |
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# |
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# Purpose: Constructor of the pRPC::Client module |
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# |
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# Inputs: Hash list of attributes; see pRPC::Client(3) |
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# |
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# Returns: connection object or error message |
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# |
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############################################################################ |
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66
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sub new ($@) { |
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2
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1
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10019059
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my ($proto) = shift; |
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2
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my ($class) = ref($proto) || $proto; |
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2
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220
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my ($self) = {@_}; |
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2
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16
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bless($self, $class); |
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2
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50
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33
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155
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if (!defined($self->{'application'}) || !defined($self->{'version'})) { |
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0
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0
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return "Required attributes 'application' or 'version' missing."; |
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} |
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# |
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# Create Storable objects and send the login message. |
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# |
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2
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227
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if ($self->_HaveOoStorable) { |
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0
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0
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$self->{'io'} = Storable->new('file' => *{$self->{'sock'}}{IO}, |
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0
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'crypt' => $self->{'cipher'}, |
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'netorder' => 1, |
84
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'forgive_me' => 1); |
85
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0
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0
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0
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if (!defined($self->{'io'})) { |
86
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0
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0
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return "Cannot create Storable object: $!"; |
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} |
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} else { |
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2
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20
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$self->{'file'} = $self->{'sock'}; |
90
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} |
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92
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2
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50
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16
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if ($self->{'debug'}) { |
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2
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50
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Sys::Syslog::syslog('debug', "Sending login message: %s %s %s", |
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$self->{'application'}, $self->{'version'}, |
95
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$self->{'user'}); |
96
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} |
97
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2
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50
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1266
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if (!$self->_Store([$self->{'application'}, |
98
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$self->{'version'}, |
99
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$self->{'user'}, |
100
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$self->{'password'}])) { |
101
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0
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0
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return "Cannot send login message: " . $self->{'error'}; |
102
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} |
103
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104
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2
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50
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21
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if ($self->{'debug'}) { |
105
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2
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13
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Sys::Syslog::syslog('debug', "Waiting for server's response ..."); |
106
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} |
107
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2
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292
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my ($msg) = $self->_Retrieve(); |
108
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2
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50
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10
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if (!$msg) { |
109
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0
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0
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$msg = "Error while reading server reply: " . $self->{'error'}; |
110
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0
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0
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Sys::Syslog::syslog('debug', $msg); |
111
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0
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0
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return $msg; |
112
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} |
113
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2
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50
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10
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if (ref($msg) ne 'ARRAY') { |
114
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0
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0
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$msg = "Error while reading server reply: Expected array"; |
115
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0
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0
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Sys::Syslog::syslog('debug', $msg); |
116
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0
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0
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return $msg; |
117
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} |
118
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119
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2
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50
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15
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if (!$$msg[0]) { |
120
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0
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0
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0
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$msg = "Refused by server: " |
121
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. (defined($$msg[1]) ? $$msg[1] : "No cause"); |
122
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0
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0
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Sys::Syslog::syslog('debug', $msg); |
123
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0
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0
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return $msg; |
124
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} |
125
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126
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2
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50
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17
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Sys::Syslog::syslog('debug', "Logged in, server replies %s", |
127
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defined($$msg[1]) ? $$msg[1] : "undef"); |
128
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2
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344
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$self->{'error'} = ''; |
129
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2
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19
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$self; |
130
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} |
131
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132
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133
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############################################################################ |
134
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# |
135
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# Name: Call, CallInt |
136
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# |
137
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# Purpose: coerce method located on the server |
138
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# |
139
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# Inputs: $con - connection attributes |
140
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# $method - method name |
141
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# @args - method attributes |
142
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# |
143
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# Returns: method results; you *must* check $con->error for potential |
144
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# error conditions |
145
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# |
146
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############################################################################ |
147
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148
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sub CallInt ($@) { |
149
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24
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24
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1
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35
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my($self) = shift; |
150
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24
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31
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my($error, $msg, @result); |
151
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152
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24
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50
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324
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if (!$self->_Store([@_])) { |
153
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0
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0
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$error = $self->{'error'}; |
154
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} else { |
155
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24
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60
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$msg = $self->_Retrieve(); |
156
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24
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50
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66
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235
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if (!$msg) { |
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50
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100
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157
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0
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0
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$error = $self->{'error'}; |
158
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} elsif (ref($msg) ne 'ARRAY') { |
159
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0
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0
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$error = "Error while reading server reply: Expected array"; |
160
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} elsif (!defined($$msg[0]) || !$$msg[0]) { |
161
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4
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50
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33
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43
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if (defined($$msg[1]) && $$msg[1] ne '') { |
162
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4
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12
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$error = $$msg[1]; |
163
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} else { |
164
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0
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0
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$error = "No error message"; |
165
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} |
166
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} else { |
167
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20
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33
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$error = ''; |
168
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20
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61
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@result = @$msg; |
169
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} |
170
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} |
171
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172
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24
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100
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99
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if ($self->{'error'} = $error) { |
173
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4
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14
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@result = (0, $error); |
174
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} |
175
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176
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24
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50
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62
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if ($self->{'debug'}) { |
177
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24
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100
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72
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if ($self->error) { |
178
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4
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13
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Sys::Syslog::syslog('err', "Calling method %s -> error %s", |
179
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$_[0], $self->error); |
180
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} else { |
181
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20
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95
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Sys::Syslog::syslog('debug', "Calling method %s -> ok", |
182
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$_[0]); |
183
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} |
184
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} |
185
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186
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24
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4907
|
@result; |
187
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} |
188
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189
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|
|
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sub Call ($@) { |
190
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24
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|
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24
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1
|
6363
|
my($self) = shift; |
191
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24
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70
|
my(@result) = $self->CallInt(@_); |
192
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193
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24
|
100
|
|
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99
|
if (!shift @result) { |
194
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4
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9
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@result = (); |
195
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} |
196
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197
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24
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88
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@result; |
198
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|
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} |
199
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200
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201
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|
############################################################################ |
202
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|
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# |
203
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# Name: Encrypt |
204
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# |
205
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# Purpose: Get or set the current encryption mode |
206
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# |
207
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# Inputs: $self - client object |
208
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|
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|
# $crypt - encryption object |
209
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|
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# |
210
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|
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|
# Returns: current encryption object; 'undef' for no encryption |
211
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# |
212
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############################################################################ |
213
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214
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sub Encrypt ($;$) { |
215
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0
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0
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1
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0
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my ($self, $crypt) = @_; |
216
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0
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0
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0
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if (@_ == 2) { |
217
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0
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0
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0
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if ($self->_HaveOoStorable) { |
218
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0
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0
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$self->{'io'}->{'crypt'} = $crypt; |
219
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} else { |
220
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0
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0
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$self->{'cipher'} = $crypt; |
221
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} |
222
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} |
223
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0
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0
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0
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$self->_HaveOoStorable ? $self->{'io'}->{'crypt'} : $self->{'cipher'}; |
224
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} |
225
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226
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227
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############################################################################ |
228
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# |
229
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# Name: _Store, _Retrieve |
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# |
231
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# Purpose: Preliminary replacements for Storable->Store and |
232
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# Storable->Retrieve as long as Raphael hasn't integrated |
233
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# my suggestion for an OO API. |
234
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# |
235
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# Inputs: $self - server object |
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# $msg - message being sent (_Store only) |
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# |
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# Returns: _Retrieve returns a message in case of success. Both |
239
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# methods return FALSE in case of error, $self->{'error'} |
240
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# will be set in that case. |
241
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# |
242
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############################################################################ |
243
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244
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$RPC::pClient::haveOoStorable = undef; |
245
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sub _HaveOoStorable () { |
246
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108
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100
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108
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263
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if (!defined($RPC::pClient::haveOoStorable)) { |
247
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2
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12
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$@ = ''; |
248
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2
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729
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eval "Storable->new()"; |
249
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2
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50
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34
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$RPC::pClient::haveOoStorable = $@ ? 0 : 1; |
250
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} |
251
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108
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285
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$RPC::pClient::haveOoStorable; |
252
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} |
253
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254
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sub _Retrieve($) { |
255
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52
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52
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83
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my($self) = @_; |
256
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52
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73
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my($result); |
257
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258
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52
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50
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108
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if ($self->_HaveOoStorable) { |
259
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0
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0
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0
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if (!($result = $self->{'io'}->Retrieve())) { |
260
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0
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0
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$self->{'error'} = $self->{'io'}->errstr; |
261
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} |
262
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0
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0
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return $result; |
263
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} |
264
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265
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52
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87
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my($encodedSize, $readSize, $blockSize); |
266
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52
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72
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$readSize = 4; |
267
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52
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92
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$encodedSize = ''; |
268
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52
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127
|
while ($readSize > 0) { |
269
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52
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|
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|
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276
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my $result = $self->{'file'}->read($encodedSize, $readSize, |
270
|
|
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|
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|
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length($encodedSize)); |
271
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52
|
50
|
|
|
|
33094
|
if ($result < 0) { |
272
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0
|
|
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|
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0
|
$self->{'error'} = "Error while reading: $!"; |
273
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0
|
|
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|
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0
|
return undef; |
274
|
|
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} |
275
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52
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|
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|
|
168
|
$readSize -= $result; |
276
|
|
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|
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} |
277
|
52
|
|
|
|
|
197
|
$encodedSize = unpack("N", $encodedSize); |
278
|
52
|
|
|
|
|
68
|
$readSize = $encodedSize; |
279
|
52
|
50
|
|
|
|
151
|
if ($self->{'cipher'}) { |
280
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0
|
|
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|
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0
|
$blockSize = $self->{'cipher'}->blocksize; |
281
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0
|
0
|
|
|
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0
|
if (my $addSize = ($encodedSize % $blockSize)) { |
282
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0
|
|
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|
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0
|
$readSize += ($blockSize - $addSize); |
283
|
|
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|
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|
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} |
284
|
|
|
|
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|
|
} |
285
|
52
|
|
|
|
|
90
|
my $msg = ''; |
286
|
52
|
|
|
|
|
68
|
my $rs = $readSize; |
287
|
52
|
|
|
|
|
291
|
while ($rs > 0) { |
288
|
52
|
|
|
|
|
418
|
my $result = read($self->{'file'}, $msg, $rs, length($msg)); |
289
|
52
|
50
|
|
|
|
259
|
if ($result < 0) { |
290
|
0
|
|
|
|
|
0
|
$self->{'error'} = "Error while reading: $!"; |
291
|
0
|
|
|
|
|
0
|
return undef; |
292
|
|
|
|
|
|
|
} |
293
|
52
|
|
|
|
|
132
|
$rs -= $result; |
294
|
|
|
|
|
|
|
} |
295
|
52
|
50
|
|
|
|
121
|
if ($self->{'cipher'}) { |
296
|
0
|
|
|
|
|
0
|
my $cipher = $self->{'cipher'}; |
297
|
0
|
|
|
|
|
0
|
my $encodedMsg = $msg; |
298
|
0
|
|
|
|
|
0
|
$msg = ''; |
299
|
0
|
|
|
|
|
0
|
for (my $i = 0; $i < $readSize; $i += $blockSize) { |
300
|
0
|
|
|
|
|
0
|
$msg .= $cipher->decrypt(substr($encodedMsg, $i, $blockSize)); |
301
|
|
|
|
|
|
|
} |
302
|
0
|
|
|
|
|
0
|
$msg = substr($msg, 0, $encodedSize); |
303
|
|
|
|
|
|
|
} |
304
|
52
|
|
|
|
|
212
|
my $ref = Storable::thaw($msg); |
305
|
52
|
|
|
|
|
2336
|
$ref; |
306
|
|
|
|
|
|
|
} |
307
|
|
|
|
|
|
|
sub _Store($$) { |
308
|
52
|
|
|
52
|
|
85
|
my($self, $msg) = @_; |
309
|
|
|
|
|
|
|
|
310
|
52
|
50
|
|
|
|
193
|
if ($self->_HaveOoStorable) { |
311
|
0
|
0
|
|
|
|
0
|
if (!$self->{'io'}->Store($msg)) { |
312
|
0
|
|
|
|
|
0
|
$self->{'error'} = $self->{'io'}->errstr; |
313
|
0
|
|
|
|
|
0
|
return undef; |
314
|
|
|
|
|
|
|
} |
315
|
0
|
|
|
|
|
0
|
return 1; |
316
|
|
|
|
|
|
|
} |
317
|
|
|
|
|
|
|
|
318
|
52
|
|
|
|
|
364
|
my($encodedMsg) = Storable::nfreeze($msg); |
319
|
52
|
|
|
|
|
4304
|
my($encodedSize) = length($encodedMsg); |
320
|
52
|
50
|
|
|
|
148
|
if ($self->{'cipher'}) { |
321
|
0
|
|
|
|
|
0
|
my $cipher = $self->{'cipher'}; |
322
|
0
|
|
|
|
|
0
|
my $size = $cipher->blocksize; |
323
|
0
|
0
|
|
|
|
0
|
if (my $addSize = length($encodedMsg) % $size) { |
324
|
0
|
|
|
|
|
0
|
$encodedMsg .= chr(0) x ($size - $addSize); |
325
|
|
|
|
|
|
|
} |
326
|
0
|
|
|
|
|
0
|
$msg = $encodedMsg; |
327
|
0
|
|
|
|
|
0
|
$encodedMsg = ''; |
328
|
0
|
|
|
|
|
0
|
for (my $i = 0; $i < length($msg); $i += $size) { |
329
|
0
|
|
|
|
|
0
|
$encodedMsg .= $cipher->encrypt(substr($msg, $i, $size)); |
330
|
|
|
|
|
|
|
} |
331
|
|
|
|
|
|
|
} |
332
|
52
|
|
|
|
|
690
|
$self->{'file'}->print(pack("N", $encodedSize) . $encodedMsg); |
333
|
52
|
|
|
|
|
3482
|
$self->{'file'}->flush(); |
334
|
|
|
|
|
|
|
} |
335
|
|
|
|
|
|
|
|
336
|
|
|
|
|
|
|
|
337
|
|
|
|
|
|
|
# Autoload methods go after =cut, and are processed by the autosplit program. |
338
|
|
|
|
|
|
|
|
339
|
|
|
|
|
|
|
1; |
340
|
|
|
|
|
|
|
__END__ |