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# Gedafe, the Generic Database Frontend |
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# copyright (c) 2000-2003 ETH Zurich |
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# see http://isg.ee.ethz.ch/tools/gedafe/ |
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|
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# released under the GNU General Public License |
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|
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package Gedafe::Util; |
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use strict; |
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|
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use Gedafe::Global qw(%g); |
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use Text::CPPTemplate; |
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|
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use IO::Socket; |
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|
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use vars qw(@ISA @EXPORT_OK); |
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require Exporter; |
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@ISA = qw(Exporter); |
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@EXPORT_OK = qw( |
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ConnectToTicketsDaemon |
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MakeURL |
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MyURL |
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InitTemplate |
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InitPearls |
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Template |
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Die |
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DropUnique |
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FormStart |
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UniqueFormStart |
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FormEnd |
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UniqueFormEnd |
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NextRefresh |
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); |
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|
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# Gedafe's die handler |
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sub Die($) { |
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my $error_text = shift; |
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my $s = $g{s}; |
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|
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# no recursion here please |
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$SIG{__DIE__} = 'DEFAULT'; |
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|
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my %t = ( |
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PAGE => 'error', |
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TITLE => 'Internal Error', |
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); |
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|
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die "GEDAFE INTERNAL ERROR: $error_text\n" unless (defined $s and defined $s->{cgi}); |
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|
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if(not $s->{http_header_sent}) { |
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print $s->{cgi}->header(-expires=>'-1d'); |
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} |
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|
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if(not $s->{header_sent}) { |
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$t{ELEMENT}='header'; |
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print Template(\%t); |
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|
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$t{ELEMENT}='header2'; |
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print Template(\%t); |
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} |
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|
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if($s->{in_form}) { |
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print "\n</FORM>\n"; |
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} |
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|
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if($s->{in_table}) { |
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print Template({ ELEMENT => 'xtable' }); |
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} |
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|
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$t{ELEMENT} ='error'; |
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$t{ERROR} = $error_text ? $error_text : '(unknown)'; |
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print Template(\%t); |
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delete $t{ERROR}; |
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|
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$t{ELEMENT}='footer'; |
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print Template(\%t); |
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|
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# die "GEDAFE ERROR: $error_text"; |
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exit 1; |
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} |
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|
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sub ConnectToTicketsDaemon($) { |
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my $s = shift; |
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my $file = $g{conf}{tickets_socket}; |
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my $socket = IO::Socket::UNIX->new(Peer => $file) |
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or Die("Couldn't connect to gedafed daemon: $!"); |
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return $socket; |
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} |
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|
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sub MakeURL($$) |
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{ |
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my $prev = shift; |
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my $new_params = shift; |
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my %params = (); |
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my $url; |
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|
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# parse old url ($prev) |
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if($prev =~ /^(.*?)\?(.*)$/) { |
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$url = $1; |
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foreach(split(/[;&]/,$2)) { |
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if(/^(.*?)=(.*)$/) { |
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$params{$1} = $2; |
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} |
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} |
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} |
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else { |
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$url = $prev; |
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} |
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|
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# merge |
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foreach(keys %$new_params) { |
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$params{$_} = $new_params->{$_}; |
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} |
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|
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# delete empty values |
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foreach(keys %params) { |
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delete $params{$_} unless defined $params{$_} and $params{$_} ne ''; |
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} |
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|
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# prepare key=value pairs |
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my @params_list = (); |
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foreach(sort keys %params) { |
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push @params_list, "$_=$params{$_}"; |
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} |
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|
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# make url |
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if(scalar @params_list != 0) { |
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$url .= '?'; |
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# make url |
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$url .= join('&', @params_list); |
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} |
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|
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return $url; |
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} |
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|
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# get full URL, including parameters |
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sub MyURL($) |
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{ |
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my $q = shift; |
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my $qs = $ENV{QUERY_STRING} || ''; |
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if($qs =~ /^\s*$/) { |
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return $q->url(); |
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} |
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else { |
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return $q->url().'?'.$qs; |
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} |
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} |
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|
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sub GetUnique($) |
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{ |
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my $s = shift; |
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if ($s->{'ticket_value'}) { |
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my $socket = ConnectToTicketsDaemon($s); |
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print $socket "SITE $s->{path}/$s->{script}\n"; |
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<$socket>; |
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print $socket "GETUNIQUE\n"; |
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$_ = <$socket>; |
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close($socket); |
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if(! /^([\w-]+)$/) { |
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Die("Couldn't understand ticket daemon reply: $_"); |
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} |
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return $1; |
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} else { |
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return $s->{'user'}.'-'.rand_ascii_32(); |
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} |
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} |
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|
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sub DropUnique($$) |
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{ |
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my $s = shift; |
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my $unique_id = shift; |
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return 1 unless ($s->{'ticket_value'}); |
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if(defined $unique_id) { |
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my $socket = ConnectToTicketsDaemon($s); |
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print $socket "SITE $s->{path}/$s->{script}\n"; |
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<$socket>; |
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print $socket "DROPUNIQUE $unique_id\n"; |
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$_ = <$socket>; |
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close($socket); |
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if(!/^OK$/) { |
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return 0; |
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} |
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} |
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return 1; |
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} |
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|
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sub UniqueFormStart($$) |
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{ |
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my $s = shift; |
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my $action = shift; |
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print qq{<FORM ACTION="$action" METHOD="POST" ENCTYPE="multipart/form-data" NAME="editform">\n}; |
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|
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$s->{in_form}=1; |
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} |
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sub FormStart($$) |
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{ |
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my $s = shift; |
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my $action = shift; |
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print qq{<FORM ACTION="$action" METHOD="GET" ENCTYPE="multipart/form-data" NAME="editform">\n}; |
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$s->{in_form}=1; |
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} |
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|
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# end form without double form protection |
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sub FormEnd($) |
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{ |
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my $s = shift; |
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|
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print "</FORM>\n"; |
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|
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delete $s->{in_form}; |
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} |
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|
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sub UniqueFormEnd($$;$) |
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{ |
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my $s = shift; |
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my $form_url = shift; |
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my $next_url = shift || $form_url; |
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|
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my $form_id = GetUnique($s); |
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print "\n<INPUT TYPE=\"hidden\" NAME=\"form_url\" VALUE=\"$form_url\">\n"; |
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print "<INPUT TYPE=\"hidden\" NAME=\"next_url\" VALUE=\"$next_url\">\n"; |
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print "<INPUT TYPE=\"hidden\" NAME=\"form_id\" VALUE=\"$form_id\">\n"; |
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FormEnd $s; |
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} |
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|
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|
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sub rand_ascii_32 |
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{ |
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return sprintf "%04x%04x", rand()*(1<<16), rand()*(1<<16); |
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} |
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|
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sub NextRefresh() |
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{ |
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return rand_ascii_32; |
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} |
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|
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sub InitTemplate($$) |
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{ |
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return if defined $g{tmpl}; |
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$g{tmpl} = new Text::CPPTemplate(shift,shift); |
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} |
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|
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sub Template($) |
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{ |
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return $g{tmpl}->template(shift); |
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} |
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|
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sub InitPearls($){ |
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return if defined $g{pearls}; |
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my $path = shift; |
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my %pearls; |
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chdir $path || Die "switching to 'pearl_dir ($path)': $!\n"; |
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my @modules = <*.pm>; |
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foreach my $module (@modules) { |
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$module =~ s/\.pm$//; |
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$pearls{$module} = eval "local \$SIG{__DIE__} = 'IGNORE'; |
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require $module; |
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$module->new()"; |
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if ($@) { |
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$pearls{$module} = |
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"<pre>Unable to load Pearl $module.pm from $path<br><br>$@</pre>" |
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} |
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} |
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$g{pearls} = \%pearls; |
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} |
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|
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1; |
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|
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# Emacs Configuration |
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# |
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# Local Variables: |
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# mode: cperl |
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# eval: (cperl-set-style "BSD") |
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# cperl-indent-level: 8 |
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# mode: flyspell |
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# mode: flyspell-prog |
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# End: |
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# |