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package Plack::Middleware::FixMissingBodyInRedirect; |
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use strict; |
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use warnings; |
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use parent qw( Plack::Middleware ); |
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use Plack::Util; |
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use HTML::Entities; |
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5776
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use Scalar::Util qw(blessed); |
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# ABSTRACT: Plack::Middleware which sets body for redirect response, if it's not already set |
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our $VERSION = '0.10'; |
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sub call { |
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my $self = shift; |
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return $self->response_cb($self->app->(@_), sub { |
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my $res = shift; |
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return unless $res->[0] >= 300 && $res->[0] < 400; |
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my $headers = Plack::Util::headers($res->[1]); # first index contains HTTP header |
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if( $headers->exists('Location') ) { |
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my $location = $headers->get("Location"); |
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# checking if body (which is at index 2) is set or not |
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if (@$res == 3 && !_is_body_set($res->[2])) { |
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my $body = $self->_default_html_body($location); |
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$res->[2] = [$body]; |
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my $content_length = Plack::Util::content_length([$body]); |
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$headers->set('Content-Length' => $content_length); |
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$headers->set('Content-Type' => 'text/html; charset=utf-8'); |
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return; |
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} |
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elsif (@$res == 2 || blessed($res->[2])) { |
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if(! $headers->exists('Content-Type')) { |
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$headers->set('Content-Type' => 'text/html; charset=utf-8') |
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} |
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my $done; |
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return sub { |
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my $chunk = shift; |
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100
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return $chunk if $done; |
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if (!defined $chunk) { |
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$done = 1; |
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return $self->_default_html_body($location); |
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} |
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elsif (length $chunk) { |
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$done = 1; |
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} |
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return $chunk; |
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}; |
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} |
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} |
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}); |
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} |
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sub _default_html_body { |
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my ($self_or_class, $location) = @_; |
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my $encoded_location = encode_entities($location); |
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7
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108
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return <<"EOF"; |
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> |
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<html xmlns="http://www.w3.org/1999/xhtml"> |
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<head> |
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<title>Moved</title> |
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</head> |
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<body> |
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<p>This item has moved <a href="$encoded_location">here</a>.</p> |
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</body> |
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</html> |
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EOF |
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} |
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69
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sub _is_body_set { |
70
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12
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12
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16
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my $body = shift; |
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12
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100
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66
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43
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if (ref $body eq 'ARRAY') { |
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100
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100
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72
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8
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100
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return grep { defined && length } @$body; |
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134
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73
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} |
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elsif (Plack::Util::is_real_fh($body) && -f $body && -z _) { |
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1
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return 0; |
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} |
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3
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172
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return 1; |
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} |
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80
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1; |
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82
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__END__ |
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84
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=pod |
85
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86
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=encoding UTF-8 |
87
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88
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=head1 NAME |
89
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90
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Plack::Middleware::FixMissingBodyInRedirect - Plack::Middleware which sets body for redirect response, if it's not already set |
91
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92
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=head1 VERSION |
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94
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version 0.11 |
95
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96
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=head1 SYNOPSIS |
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98
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use strict; |
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use warnings; |
100
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101
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use Plack::Builder; |
102
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103
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my $app = sub { ... }; |
104
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105
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builder { |
106
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enable "FixMissingBodyInRedirect"; |
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$app; |
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}; |
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110
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=head1 DESCRIPTION |
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112
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This module sets body in redirect response, if it's not already set. |
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114
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=head1 CONTRIBUTORS |
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116
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John Napiorkowski <jjn1056@yahoo.com> |
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118
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Graham Knop <haarg@haarg.org> |
119
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120
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n0body, Mark Ellis <m@rkellis.com> |
121
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122
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ether, Karen Etheridge <ether@cpan.org> |
123
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124
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=head1 AUTHOR |
125
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126
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Upasana <me@upasana.me> |
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128
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=head1 COPYRIGHT AND LICENSE |
129
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130
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This software is copyright (c) 2014 by Upasana. |
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132
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This is free software; you can redistribute it and/or modify it under |
133
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the same terms as the Perl 5 programming language system itself. |
134
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135
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=cut |