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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: $!"); |
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70 | |
71 | binmode( $self->stdin, ':raw' ); |
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72 | binmode( STDIN, ':raw' ); |
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73 | |
74 | if ( $self->request->content_length ) { |
75 | |
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76 | $self->stdin->syswrite( $self->request->content ) |
780060e5 |
77 | or croak("Can't write request content to stdin handle: $!"); |
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78 | |
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79 | $self->stdin->sysseek( 0, SEEK_SET ) |
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80 | or croak("Can't seek stdin handle: $!"); |
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81 | } |
82 | |
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83 | if ( $self->stdout ) { |
84 | open( $self->{restore}->{stdout}, '>&', STDOUT->fileno ) |
85 | or croak("Can't dup stdout: $!"); |
86 | |
87 | open( STDOUT, '>&=', $self->stdout->fileno ) |
88 | or croak("Can't open stdout: $!"); |
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89 | |
90 | binmode( $self->stdout, ':raw' ); |
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91 | binmode( STDOUT, ':raw' ); |
92 | } |
93 | |
94 | if ( $self->stderr ) { |
95 | open( $self->{restore}->{stderr}, '>&', STDERR->fileno ) |
96 | or croak("Can't dup stderr: $!"); |
97 | |
98 | open( STDERR, '>&=', $self->stderr->fileno ) |
99 | or croak("Can't open stderr: $!"); |
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100 | |
101 | binmode( $self->stderr, ':raw' ); |
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102 | binmode( STDERR, ':raw' ); |
103 | } |
104 | |
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105 | { |
106 | no warnings 'uninitialized'; |
107 | %ENV = %{ $self->enviroment }; |
108 | } |
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109 | |
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110 | $self->{setuped}++; |
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111 | |
112 | return $self; |
113 | } |
114 | |
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115 | sub response { |
116 | my ( $self, $callback ) = @_; |
117 | |
118 | return undef unless $self->{setuped}; |
119 | return undef unless $self->{restored}; |
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120 | return undef unless $self->{restore}->{stdout}; |
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121 | |
122 | require HTTP::Response; |
123 | |
124 | my $message = undef; |
125 | my $position = $self->stdin->tell; |
126 | |
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127 | $self->stdout->sysseek( 0, SEEK_SET ) |
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128 | or croak("Can't seek stdin handle: $!"); |
129 | |
130 | while ( my $line = $self->stdout->getline ) { |
131 | $message .= $line; |
132 | last if $line =~ /^\x0d?\x0a$/; |
133 | } |
134 | |
135 | unless ( $message =~ /^HTTP/ ) { |
136 | $message = "HTTP/1.1 200\x0d\x0a" . $message; |
137 | } |
138 | |
139 | my $response = HTTP::Response->parse($message); |
140 | |
141 | if ( my $code = $response->header('Status') ) { |
142 | $response->code($code); |
143 | } |
144 | |
145 | $response->protocol( $self->request->protocol ); |
146 | $response->headers->date( time() ); |
147 | |
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148 | if ($callback) { |
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149 | $response->content( sub { |
150 | if ( $self->stdout->read( my $buffer, 4096 ) ) { |
151 | return $buffer; |
152 | } |
153 | return undef; |
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154 | }); |
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155 | } |
156 | else { |
157 | my $length = 0; |
158 | while ( $self->stdout->read( my $buffer, 4096 ) ) { |
159 | $length += length($buffer); |
160 | $response->add_content($buffer); |
161 | } |
162 | $response->content_length($length) unless $response->content_length; |
163 | } |
164 | |
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165 | $self->stdout->sysseek( $position, SEEK_SET ) |
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166 | or croak("Can't seek stdin handle: $!"); |
167 | |
168 | return $response; |
169 | } |
170 | |
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171 | sub restore { |
172 | my $self = shift; |
173 | |
174 | %ENV = %{ $self->{restore}->{enviroment} }; |
175 | |
176 | open( STDIN, '>&', $self->{restore}->{stdin} ) |
177 | or croak("Can't restore stdin: $!"); |
178 | |
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179 | $self->stdin->sysseek( 0, SEEK_SET ) |
180 | or croak("Can't seek stdin: $!"); |
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181 | |
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182 | if ( $self->{restore}->{stdout} ) { |
183 | open( STDOUT, '>&', $self->{restore}->{stdout} ) |
184 | or croak("Can't restore stdout: $!"); |
185 | |
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186 | $self->stdout->sysseek( 0, SEEK_SET ) |
187 | or croak("Can't seek stdout: $!"); |
188 | } |
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189 | |
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190 | if ( $self->{restore}->{stderr} ) { |
191 | open( STDERR, '>&', $self->{restore}->{stderr} ) |
192 | or croak("Can't restore stderr: $!"); |
193 | |
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194 | $self->stderr->sysseek( 0, SEEK_SET ) |
195 | or croak("Can't seek stderr: $!"); |
196 | } |
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197 | |
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198 | $self->{restored}++; |
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199 | |
200 | return $self; |
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201 | } |
202 | |
203 | sub DESTROY { |
204 | my $self = shift; |
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205 | $self->restore if $self->{setuped} && !$self->{restored}; |
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206 | } |
207 | |
208 | 1; |
209 | |
210 | __END__ |
211 | |
212 | =head1 NAME |
213 | |
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214 | HTTP::Request::AsCGI - Setup a CGI enviroment from a HTTP::Request |
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215 | |
216 | =head1 SYNOPSIS |
217 | |
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218 | use CGI; |
219 | use HTTP::Request; |
220 | use HTTP::Request::AsCGI; |
221 | |
222 | my $request = HTTP::Request->new( GET => 'http://www.host.com/' ); |
223 | my $stdout; |
224 | |
225 | { |
226 | my $c = HTTP::Request::AsCGI->new($request)->setup; |
227 | my $q = CGI->new; |
228 | |
229 | print $q->header, |
230 | $q->start_html('Hello World'), |
231 | $q->h1('Hello World'), |
232 | $q->end_html; |
233 | |
234 | $stdout = $c->stdout; |
235 | |
236 | # enviroment and descriptors will automatically be restored when $c is destructed. |
237 | } |
238 | |
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239 | while ( my $line = $stdout->getline ) { |
240 | print $line; |
241 | } |
242 | |
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243 | =head1 DESCRIPTION |
244 | |
245 | =head1 METHODS |
246 | |
247 | =over 4 |
248 | |
249 | =item new |
250 | |
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251 | =item enviroment |
252 | |
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253 | =item setup |
254 | |
255 | =item restore |
256 | |
257 | =item request |
258 | |
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259 | =item response |
260 | |
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261 | =item stdin |
262 | |
263 | =item stdout |
264 | |
265 | =item stderr |
266 | |
267 | =back |
268 | |
269 | =head1 BUGS |
270 | |
271 | =head1 AUTHOR |
272 | |
273 | Christian Hansen, C<ch@ngmedia.com> |
274 | |
275 | =head1 LICENSE |
276 | |
277 | This library is free software. You can redistribute it and/or modify |
278 | it under the same terms as perl itself. |
279 | |
280 | =cut |