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1 | package HTTP::Request::AsCGI; |
2 | |
3 | use strict; |
4 | use warnings; |
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5 | use bytes; |
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6 | use base 'Class::Accessor::Fast'; |
7 | |
8 | use Carp; |
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9 | use IO::File; |
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10 | |
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11 | __PACKAGE__->mk_accessors(qw[ enviroment request stdin stdout stderr ]); |
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12 | |
13 | our $VERSION = 0.1; |
14 | |
15 | sub new { |
16 | my $class = shift; |
17 | my $request = shift; |
18 | |
19 | my $self = { |
20 | request => $request, |
21 | restored => 0, |
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22 | setuped => 0, |
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23 | stdin => IO::File->new_tmpfile, |
24 | stdout => IO::File->new_tmpfile, |
25 | stderr => IO::File->new_tmpfile |
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26 | }; |
27 | |
28 | $self->{enviroment} = { |
29 | GATEWAY_INTERFACE => 'CGI/1.1', |
30 | HTTP_HOST => $request->uri->host_port, |
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31 | PATH_INFO => $request->uri->path, |
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32 | QUERY_STRING => $request->uri->query || '', |
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33 | SCRIPT_NAME => '/', |
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34 | SERVER_NAME => $request->uri->host, |
35 | SERVER_PORT => $request->uri->port, |
36 | SERVER_PROTOCOL => $request->protocol || 'HTTP/1.1', |
37 | SERVER_SOFTWARE => __PACKAGE__ . "/" . $VERSION, |
38 | REMOTE_ADDR => '127.0.0.1', |
39 | REMOTE_HOST => 'localhost', |
40 | REMOTE_PORT => int( rand(64000) + 1000 ), # not in RFC 3875 |
41 | REQUEST_URI => $request->uri->path || '/', # not in RFC 3875 |
42 | REQUEST_METHOD => $request->method, |
43 | @_ |
44 | }; |
45 | |
46 | foreach my $field ( $request->headers->header_field_names ) { |
47 | |
48 | my $key = uc($field); |
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49 | $key =~ tr/-/_/; |
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50 | $key = 'HTTP_' . $key unless $field =~ /^Content-(Length|Type)$/; |
51 | |
52 | unless ( exists $self->{enviroment}->{$key} ) { |
53 | $self->{enviroment}->{$key} = $request->headers->header($field); |
54 | } |
55 | } |
56 | |
57 | return $class->SUPER::new($self); |
58 | } |
59 | |
60 | sub setup { |
61 | my $self = shift; |
62 | |
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63 | $self->{restore}->{enviroment} = {%ENV}; |
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64 | |
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65 | open( $self->{restore}->{stdin}, '>&', STDIN->fileno ) |
66 | or croak("Can't dup stdin: $!"); |
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67 | |
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68 | open( STDIN, '<&=', $self->stdin->fileno ) |
69 | or croak("Can't open stdin: $!"); |
70 | |
71 | binmode( STDIN, ':raw' ); |
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72 | |
73 | if ( $self->request->content_length ) { |
74 | |
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75 | $self->stdin->syswrite( $self->request->content ) |
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76 | or croak("Can't write request content to stdin handle: $!"); |
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77 | |
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78 | $self->stdin->sysseek( 0, SEEK_SET ) |
780060e5 |
79 | or croak("Can't seek stdin handle: $!"); |
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80 | } |
81 | |
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82 | if ( $self->stdout ) { |
83 | open( $self->{restore}->{stdout}, '>&', STDOUT->fileno ) |
84 | or croak("Can't dup stdout: $!"); |
85 | |
86 | open( STDOUT, '>&=', $self->stdout->fileno ) |
87 | or croak("Can't open stdout: $!"); |
88 | |
89 | binmode( STDOUT, ':raw' ); |
90 | } |
91 | |
92 | if ( $self->stderr ) { |
93 | open( $self->{restore}->{stderr}, '>&', STDERR->fileno ) |
94 | or croak("Can't dup stderr: $!"); |
95 | |
96 | open( STDERR, '>&=', $self->stderr->fileno ) |
97 | or croak("Can't open stderr: $!"); |
98 | |
99 | binmode( STDERR, ':raw' ); |
100 | } |
101 | |
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102 | { |
103 | no warnings 'uninitialized'; |
104 | %ENV = %{ $self->enviroment }; |
105 | } |
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106 | |
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107 | $self->{setuped}++; |
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108 | |
109 | return $self; |
110 | } |
111 | |
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112 | sub response { |
113 | my ( $self, $callback ) = @_; |
114 | |
115 | return undef unless $self->{setuped}; |
116 | return undef unless $self->{restored}; |
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117 | return undef unless $self->{restore}->{stdout}; |
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118 | |
119 | require HTTP::Response; |
120 | |
121 | my $message = undef; |
122 | my $position = $self->stdin->tell; |
123 | |
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124 | $self->stdout->sysseek( 0, SEEK_SET ) |
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125 | or croak("Can't seek stdin handle: $!"); |
126 | |
127 | while ( my $line = $self->stdout->getline ) { |
128 | $message .= $line; |
129 | last if $line =~ /^\x0d?\x0a$/; |
130 | } |
131 | |
132 | unless ( $message =~ /^HTTP/ ) { |
133 | $message = "HTTP/1.1 200\x0d\x0a" . $message; |
134 | } |
135 | |
136 | my $response = HTTP::Response->parse($message); |
137 | |
138 | if ( my $code = $response->header('Status') ) { |
139 | $response->code($code); |
140 | } |
141 | |
142 | $response->protocol( $self->request->protocol ); |
143 | $response->headers->date( time() ); |
144 | |
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145 | if ($callback) { |
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146 | $response->content( sub { |
147 | if ( $self->stdout->read( my $buffer, 4096 ) ) { |
148 | return $buffer; |
149 | } |
150 | return undef; |
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151 | }); |
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152 | } |
153 | else { |
154 | my $length = 0; |
155 | while ( $self->stdout->read( my $buffer, 4096 ) ) { |
156 | $length += length($buffer); |
157 | $response->add_content($buffer); |
158 | } |
159 | $response->content_length($length) unless $response->content_length; |
160 | } |
161 | |
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162 | $self->stdout->sysseek( $position, SEEK_SET ) |
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163 | or croak("Can't seek stdin handle: $!"); |
164 | |
165 | return $response; |
166 | } |
167 | |
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168 | sub restore { |
169 | my $self = shift; |
170 | |
171 | %ENV = %{ $self->{restore}->{enviroment} }; |
172 | |
173 | open( STDIN, '>&', $self->{restore}->{stdin} ) |
174 | or croak("Can't restore stdin: $!"); |
175 | |
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176 | $self->stdin->sysseek( 0, SEEK_SET ) |
177 | or croak("Can't seek stdin: $!"); |
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178 | |
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179 | if ( $self->{restore}->{stdout} ) { |
180 | open( STDOUT, '>&', $self->{restore}->{stdout} ) |
181 | or croak("Can't restore stdout: $!"); |
182 | |
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183 | $self->stdout->sysseek( 0, SEEK_SET ) |
184 | or croak("Can't seek stdout: $!"); |
185 | } |
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186 | |
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187 | if ( $self->{restore}->{stderr} ) { |
188 | open( STDERR, '>&', $self->{restore}->{stderr} ) |
189 | or croak("Can't restore stderr: $!"); |
190 | |
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191 | $self->stderr->sysseek( 0, SEEK_SET ) |
192 | or croak("Can't seek stderr: $!"); |
193 | } |
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194 | |
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195 | $self->{restored}++; |
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196 | |
197 | return $self; |
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198 | } |
199 | |
200 | sub DESTROY { |
201 | my $self = shift; |
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202 | $self->restore if $self->{setuped} && !$self->{restored}; |
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203 | } |
204 | |
205 | 1; |
206 | |
207 | __END__ |
208 | |
209 | =head1 NAME |
210 | |
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211 | HTTP::Request::AsCGI - Setup a CGI enviroment from a HTTP::Request |
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212 | |
213 | =head1 SYNOPSIS |
214 | |
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215 | use CGI; |
216 | use HTTP::Request; |
217 | use HTTP::Request::AsCGI; |
218 | |
219 | my $request = HTTP::Request->new( GET => 'http://www.host.com/' ); |
220 | my $stdout; |
221 | |
222 | { |
223 | my $c = HTTP::Request::AsCGI->new($request)->setup; |
224 | my $q = CGI->new; |
225 | |
226 | print $q->header, |
227 | $q->start_html('Hello World'), |
228 | $q->h1('Hello World'), |
229 | $q->end_html; |
230 | |
231 | $stdout = $c->stdout; |
232 | |
233 | # enviroment and descriptors will automatically be restored when $c is destructed. |
234 | } |
235 | |
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236 | while ( my $line = $stdout->getline ) { |
237 | print $line; |
238 | } |
239 | |
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240 | =head1 DESCRIPTION |
241 | |
242 | =head1 METHODS |
243 | |
244 | =over 4 |
245 | |
246 | =item new |
247 | |
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248 | =item enviroment |
249 | |
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250 | =item setup |
251 | |
252 | =item restore |
253 | |
254 | =item request |
255 | |
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256 | =item response |
257 | |
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258 | =item stdin |
259 | |
260 | =item stdout |
261 | |
262 | =item stderr |
263 | |
264 | =back |
265 | |
266 | =head1 BUGS |
267 | |
268 | =head1 AUTHOR |
269 | |
270 | Christian Hansen, C<ch@ngmedia.com> |
271 | |
272 | =head1 LICENSE |
273 | |
274 | This library is free software. You can redistribute it and/or modify |
275 | it under the same terms as perl itself. |
276 | |
277 | =cut |