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1 | package HTTP::Request::AsCGI; |
2 | |
3 | use strict; |
4 | use warnings; |
5 | use base 'Class::Accessor::Fast'; |
6 | |
7 | use Carp; |
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8 | use IO::File; |
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9 | |
10 | __PACKAGE__->mk_accessors( qw[ enviroment request stdin stdout stderr ] ); |
11 | |
12 | our $VERSION = 0.1; |
13 | |
14 | sub new { |
15 | my $class = shift; |
16 | my $request = shift; |
17 | |
18 | my $self = { |
19 | request => $request, |
20 | restored => 0, |
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21 | setuped => 0, |
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22 | stdin => IO::File->new_tmpfile, |
23 | stdout => IO::File->new_tmpfile, |
24 | stderr => IO::File->new_tmpfile |
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25 | }; |
26 | |
27 | $self->{enviroment} = { |
28 | GATEWAY_INTERFACE => 'CGI/1.1', |
29 | HTTP_HOST => $request->uri->host_port, |
30 | QUERY_STRING => $request->uri->query || '', |
31 | SCRIPT_NAME => $request->uri->path || '/', |
32 | SERVER_NAME => $request->uri->host, |
33 | SERVER_PORT => $request->uri->port, |
34 | SERVER_PROTOCOL => $request->protocol || 'HTTP/1.1', |
35 | SERVER_SOFTWARE => __PACKAGE__ . "/" . $VERSION, |
36 | REMOTE_ADDR => '127.0.0.1', |
37 | REMOTE_HOST => 'localhost', |
38 | REMOTE_PORT => int( rand(64000) + 1000 ), # not in RFC 3875 |
39 | REQUEST_URI => $request->uri->path || '/', # not in RFC 3875 |
40 | REQUEST_METHOD => $request->method, |
41 | @_ |
42 | }; |
43 | |
44 | foreach my $field ( $request->headers->header_field_names ) { |
45 | |
46 | my $key = uc($field); |
47 | $key =~ tr/_/-/; |
48 | $key = 'HTTP_' . $key unless $field =~ /^Content-(Length|Type)$/; |
49 | |
50 | unless ( exists $self->{enviroment}->{$key} ) { |
51 | $self->{enviroment}->{$key} = $request->headers->header($field); |
52 | } |
53 | } |
54 | |
55 | return $class->SUPER::new($self); |
56 | } |
57 | |
58 | sub setup { |
59 | my $self = shift; |
60 | |
61 | open( my $stdin, '>&', STDIN->fileno ) |
62 | or croak("Can't dup stdin: $!"); |
63 | |
64 | open( my $stdout, '>&', STDOUT->fileno ) |
65 | or croak("Can't dup stdout: $!"); |
66 | |
67 | open( my $stderr, '>&', STDERR->fileno ) |
68 | or croak("Can't dup stderr: $!"); |
69 | |
70 | $self->{restore} = { |
71 | stdin => $stdin, |
72 | stdout => $stdout, |
73 | stderr => $stderr, |
74 | enviroment => {%ENV} |
75 | }; |
76 | |
77 | if ( $self->request->content_length ) { |
78 | |
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79 | $self->stdin->syswrite( $self->request->content ) |
80 | or croak("Can't write content to stdin: $!"); |
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81 | |
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82 | $self->stdin->sysseek( 0, SEEK_SET ) |
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83 | or croak("Can't seek stdin: $!"); |
84 | } |
85 | |
86 | %ENV = %{ $self->enviroment }; |
87 | |
88 | open( STDIN, '<&=', $self->stdin->fileno ) |
89 | or croak("Can't open stdin: $!"); |
90 | |
91 | open( STDOUT, '>&=', $self->stdout->fileno ) |
92 | or croak("Can't open stdout: $!"); |
93 | |
94 | open( STDERR, '>&=', $self->stderr->fileno ) |
95 | or croak("Can't open stderr: $!"); |
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96 | |
97 | $self->{setuped}++; |
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98 | |
99 | return $self; |
100 | } |
101 | |
102 | sub restore { |
103 | my $self = shift; |
104 | |
105 | %ENV = %{ $self->{restore}->{enviroment} }; |
106 | |
107 | open( STDIN, '>&', $self->{restore}->{stdin} ) |
108 | or croak("Can't restore stdin: $!"); |
109 | |
110 | open( STDOUT, '>&', $self->{restore}->{stdout} ) |
111 | or croak("Can't restore stdout: $!"); |
112 | |
113 | open( STDERR, '>&', $self->{restore}->{stderr} ) |
114 | or croak("Can't restore stderr: $!"); |
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115 | |
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116 | if ( $self->stdin->fileno != STDIN->fileno ) { |
117 | $self->stdin->sysseek( 0, SEEK_SET ) |
118 | or croak("Can't seek stdin: $!"); |
119 | } |
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120 | |
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121 | if ( $self->stdout->fileno != STDOUT->fileno ) { |
122 | $self->stdout->sysseek( 0, SEEK_SET ) |
123 | or croak("Can't seek stdout: $!"); |
124 | } |
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125 | |
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126 | if ( $self->stderr->fileno != STDERR->fileno ) { |
127 | $self->stderr->sysseek( 0, SEEK_SET ) |
128 | or croak("Can't seek stderr: $!"); |
129 | } |
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130 | |
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131 | $self->{restored}++; |
132 | } |
133 | |
134 | sub DESTROY { |
135 | my $self = shift; |
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136 | $self->restore if $self->{setuped} && !$self->{restored}; |
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137 | } |
138 | |
139 | 1; |
140 | |
141 | __END__ |
142 | |
143 | =head1 NAME |
144 | |
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145 | HTTP::Request::AsCGI - Setup a CGI enviroment from a HTTP::Request |
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146 | |
147 | =head1 SYNOPSIS |
148 | |
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149 | use CGI; |
150 | use HTTP::Request; |
151 | use HTTP::Request::AsCGI; |
152 | |
153 | my $request = HTTP::Request->new( GET => 'http://www.host.com/' ); |
154 | my $stdout; |
155 | |
156 | { |
157 | my $c = HTTP::Request::AsCGI->new($request)->setup; |
158 | my $q = CGI->new; |
159 | |
160 | print $q->header, |
161 | $q->start_html('Hello World'), |
162 | $q->h1('Hello World'), |
163 | $q->end_html; |
164 | |
165 | $stdout = $c->stdout; |
166 | |
167 | # enviroment and descriptors will automatically be restored when $c is destructed. |
168 | } |
169 | |
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170 | while ( my $line = $stdout->getline ) { |
171 | print $line; |
172 | } |
173 | |
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174 | =head1 DESCRIPTION |
175 | |
176 | =head1 METHODS |
177 | |
178 | =over 4 |
179 | |
180 | =item new |
181 | |
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182 | =item enviroment |
183 | |
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184 | =item setup |
185 | |
186 | =item restore |
187 | |
188 | =item request |
189 | |
190 | =item stdin |
191 | |
192 | =item stdout |
193 | |
194 | =item stderr |
195 | |
196 | =back |
197 | |
198 | =head1 BUGS |
199 | |
200 | =head1 AUTHOR |
201 | |
202 | Christian Hansen, C<ch@ngmedia.com> |
203 | |
204 | =head1 LICENSE |
205 | |
206 | This library is free software. You can redistribute it and/or modify |
207 | it under the same terms as perl itself. |
208 | |
209 | =cut |