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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, |
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24 | stdout => 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, |
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30 | PATH_INFO => $request->uri->path, |
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31 | QUERY_STRING => $request->uri->query || '', |
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32 | SCRIPT_NAME => '/', |
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33 | SERVER_NAME => $request->uri->host, |
34 | SERVER_PORT => $request->uri->port, |
35 | SERVER_PROTOCOL => $request->protocol || 'HTTP/1.1', |
36 | SERVER_SOFTWARE => __PACKAGE__ . "/" . $VERSION, |
37 | REMOTE_ADDR => '127.0.0.1', |
38 | REMOTE_HOST => 'localhost', |
39 | REMOTE_PORT => int( rand(64000) + 1000 ), # not in RFC 3875 |
40 | REQUEST_URI => $request->uri->path || '/', # not in RFC 3875 |
41 | REQUEST_METHOD => $request->method, |
42 | @_ |
43 | }; |
44 | |
45 | foreach my $field ( $request->headers->header_field_names ) { |
46 | |
47 | my $key = uc($field); |
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48 | $key =~ tr/-/_/; |
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49 | $key = 'HTTP_' . $key unless $field =~ /^Content-(Length|Type)$/; |
50 | |
51 | unless ( exists $self->{enviroment}->{$key} ) { |
52 | $self->{enviroment}->{$key} = $request->headers->header($field); |
53 | } |
54 | } |
55 | |
56 | return $class->SUPER::new($self); |
57 | } |
58 | |
59 | sub setup { |
60 | my $self = shift; |
61 | |
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62 | $self->{restore}->{enviroment} = {%ENV}; |
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63 | |
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64 | open( $self->{restore}->{stdin}, '>&', STDIN->fileno ) |
65 | or croak("Can't dup stdin: $!"); |
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66 | |
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67 | open( STDIN, '<&=', $self->stdin->fileno ) |
68 | or croak("Can't open stdin: $!"); |
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69 | |
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70 | binmode( $self->stdin ); |
71 | binmode( STDIN ); |
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72 | |
73 | if ( $self->request->content_length ) { |
74 | |
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75 | $self->stdin->syswrite( $self->request->content ) |
780060e5 |
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: $!"); |
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88 | |
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89 | binmode( $self->stdout ); |
90 | binmode( STDOUT); |
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91 | } |
92 | |
93 | if ( $self->stderr ) { |
94 | open( $self->{restore}->{stderr}, '>&', STDERR->fileno ) |
95 | or croak("Can't dup stderr: $!"); |
96 | |
97 | open( STDERR, '>&=', $self->stderr->fileno ) |
98 | or croak("Can't open stderr: $!"); |
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99 | |
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100 | binmode( $self->stderr ); |
101 | binmode( STDERR ); |
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102 | } |
103 | |
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104 | { |
105 | no warnings 'uninitialized'; |
106 | %ENV = %{ $self->enviroment }; |
107 | } |
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108 | |
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109 | $self->{setuped}++; |
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110 | |
111 | return $self; |
112 | } |
113 | |
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114 | sub response { |
115 | my ( $self, $callback ) = @_; |
116 | |
117 | return undef unless $self->{setuped}; |
118 | return undef unless $self->{restored}; |
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119 | return undef unless $self->{restore}->{stdout}; |
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120 | |
121 | require HTTP::Response; |
122 | |
123 | my $message = undef; |
124 | my $position = $self->stdin->tell; |
125 | |
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126 | $self->stdout->sysseek( 0, SEEK_SET ) |
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127 | or croak("Can't seek stdin handle: $!"); |
128 | |
129 | while ( my $line = $self->stdout->getline ) { |
130 | $message .= $line; |
131 | last if $line =~ /^\x0d?\x0a$/; |
132 | } |
133 | |
134 | unless ( $message =~ /^HTTP/ ) { |
135 | $message = "HTTP/1.1 200\x0d\x0a" . $message; |
136 | } |
137 | |
138 | my $response = HTTP::Response->parse($message); |
139 | |
140 | if ( my $code = $response->header('Status') ) { |
141 | $response->code($code); |
142 | } |
143 | |
144 | $response->protocol( $self->request->protocol ); |
145 | $response->headers->date( time() ); |
146 | |
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147 | if ($callback) { |
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148 | $response->content( sub { |
149 | if ( $self->stdout->read( my $buffer, 4096 ) ) { |
150 | return $buffer; |
151 | } |
152 | return undef; |
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153 | }); |
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154 | } |
155 | else { |
156 | my $length = 0; |
157 | while ( $self->stdout->read( my $buffer, 4096 ) ) { |
158 | $length += length($buffer); |
159 | $response->add_content($buffer); |
160 | } |
161 | $response->content_length($length) unless $response->content_length; |
162 | } |
163 | |
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164 | $self->stdout->sysseek( $position, SEEK_SET ) |
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165 | or croak("Can't seek stdin handle: $!"); |
166 | |
167 | return $response; |
168 | } |
169 | |
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170 | sub restore { |
171 | my $self = shift; |
172 | |
173 | %ENV = %{ $self->{restore}->{enviroment} }; |
174 | |
175 | open( STDIN, '>&', $self->{restore}->{stdin} ) |
176 | or croak("Can't restore stdin: $!"); |
177 | |
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178 | $self->stdin->sysseek( 0, SEEK_SET ) |
179 | or croak("Can't seek stdin: $!"); |
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180 | |
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181 | if ( $self->{restore}->{stdout} ) { |
182 | open( STDOUT, '>&', $self->{restore}->{stdout} ) |
183 | or croak("Can't restore stdout: $!"); |
184 | |
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185 | $self->stdout->sysseek( 0, SEEK_SET ) |
186 | or croak("Can't seek stdout: $!"); |
187 | } |
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188 | |
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189 | if ( $self->{restore}->{stderr} ) { |
190 | open( STDERR, '>&', $self->{restore}->{stderr} ) |
191 | or croak("Can't restore stderr: $!"); |
192 | |
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193 | $self->stderr->sysseek( 0, SEEK_SET ) |
194 | or croak("Can't seek stderr: $!"); |
195 | } |
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196 | |
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197 | $self->{restored}++; |
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198 | |
199 | return $self; |
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200 | } |
201 | |
202 | sub DESTROY { |
203 | my $self = shift; |
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204 | $self->restore if $self->{setuped} && !$self->{restored}; |
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205 | } |
206 | |
207 | 1; |
208 | |
209 | __END__ |
210 | |
211 | =head1 NAME |
212 | |
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213 | HTTP::Request::AsCGI - Setup a CGI enviroment from a HTTP::Request |
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214 | |
215 | =head1 SYNOPSIS |
216 | |
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217 | use CGI; |
218 | use HTTP::Request; |
219 | use HTTP::Request::AsCGI; |
220 | |
221 | my $request = HTTP::Request->new( GET => 'http://www.host.com/' ); |
222 | my $stdout; |
223 | |
224 | { |
225 | my $c = HTTP::Request::AsCGI->new($request)->setup; |
226 | my $q = CGI->new; |
227 | |
228 | print $q->header, |
229 | $q->start_html('Hello World'), |
230 | $q->h1('Hello World'), |
231 | $q->end_html; |
232 | |
233 | $stdout = $c->stdout; |
234 | |
235 | # enviroment and descriptors will automatically be restored when $c is destructed. |
236 | } |
237 | |
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238 | while ( my $line = $stdout->getline ) { |
239 | print $line; |
240 | } |
241 | |
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242 | =head1 DESCRIPTION |
243 | |
244 | =head1 METHODS |
245 | |
246 | =over 4 |
247 | |
248 | =item new |
249 | |
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250 | =item enviroment |
251 | |
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252 | =item setup |
253 | |
254 | =item restore |
255 | |
256 | =item request |
257 | |
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258 | =item response |
259 | |
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260 | =item stdin |
261 | |
262 | =item stdout |
263 | |
264 | =item stderr |
265 | |
266 | =back |
267 | |
268 | =head1 BUGS |
269 | |
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270 | =item THANKS TO |
271 | |
272 | Thomas L. Shinnick for his valuable win32 testing. |
273 | |
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274 | =head1 AUTHOR |
275 | |
276 | Christian Hansen, C<ch@ngmedia.com> |
277 | |
278 | =head1 LICENSE |
279 | |
280 | This library is free software. You can redistribute it and/or modify |
281 | it under the same terms as perl itself. |
282 | |
283 | =cut |