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1 | package Catalyst::Engine::CGI; |
2 | |
3 | use strict; |
4 | use base 'Catalyst::Engine'; |
5 | use URI; |
6 | |
7 | require CGI::Simple; |
8 | require CGI::Cookie; |
9 | |
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10 | $CGI::Simple::POST_MAX = 1048576; |
11 | $CGI::Simple::DISABLE_UPLOADS = 0; |
12 | |
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13 | __PACKAGE__->mk_accessors('cgi'); |
14 | |
15 | =head1 NAME |
16 | |
17 | Catalyst::Engine::CGI - The CGI Engine |
18 | |
19 | =head1 SYNOPSIS |
20 | |
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21 | A script using the Catalyst::Engine::CGI module might look like: |
22 | |
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23 | #!/usr/bin/perl -w |
24 | |
25 | use strict; |
26 | use lib '/path/to/MyApp/lib'; |
27 | use MyApp; |
28 | |
29 | MyApp->run; |
30 | |
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31 | The application module (C<MyApp>) would use C<Catalyst>, which loads the |
32 | appropriate engine module. |
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33 | |
34 | =head1 DESCRIPTION |
35 | |
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36 | This is the Catalyst engine specialized for the CGI environment (using the |
37 | C<CGI::Simple> and C<CGI::Cookie> modules). Normally Catalyst will select the |
38 | appropriate engine according to the environment that it detects, however you |
39 | can force Catalyst to use the CGI engine by specifying the following in your |
40 | application module: |
41 | |
42 | use Catalyst qw(-Engine=CGI); |
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43 | |
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44 | Catalyst::Engine::CGI generates a full set of HTTP headers, which means that |
45 | applications using the engine must be be configured as "Non-parsed Headers" |
46 | scripts (at least when running under Apache). To configure this under Apache |
47 | name the starting with C<nph->. |
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48 | |
49 | The performance of this way of using Catalyst is not expected to be |
50 | useful in production applications, but it may be helpful for development. |
51 | |
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52 | =head1 METHODS |
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53 | |
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54 | =over 4 |
55 | |
56 | =item $c->run |
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57 | |
58 | To be called from a CGI script to start the Catalyst application. |
59 | |
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60 | =item $c->cgi |
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61 | |
62 | This config parameter contains the C<CGI::Simple> object. |
63 | |
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64 | =back |
65 | |
66 | =head1 OVERLOADED METHODS |
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67 | |
68 | This class overloads some methods from C<Catalyst>. |
69 | |
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70 | =over 4 |
71 | |
72 | =item $c->finalize_headers |
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73 | |
74 | =cut |
75 | |
76 | sub finalize_headers { |
77 | my $c = shift; |
78 | my %headers = ( -nph => 1 ); |
79 | $headers{-status} = $c->response->status if $c->response->status; |
80 | for my $name ( $c->response->headers->header_field_names ) { |
81 | $headers{"-$name"} = $c->response->headers->header($name); |
82 | } |
83 | my @cookies; |
84 | while ( my ( $name, $cookie ) = each %{ $c->response->cookies } ) { |
85 | push @cookies, $c->cgi->cookie( |
86 | -name => $name, |
87 | -value => $cookie->{value}, |
88 | -expires => $cookie->{expires}, |
89 | -domain => $cookie->{domain}, |
90 | -path => $cookie->{path}, |
91 | -secure => $cookie->{secure} || 0 |
92 | ); |
93 | } |
94 | $headers{-cookie} = \@cookies if @cookies; |
95 | print $c->cgi->header(%headers); |
96 | } |
97 | |
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98 | =item $c->finalize_output |
99 | |
100 | Prints the response output to STDOUT. |
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101 | |
102 | =cut |
103 | |
104 | sub finalize_output { |
105 | my $c = shift; |
106 | print $c->response->output; |
107 | } |
108 | |
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109 | =item $c->prepare_cookies |
110 | |
111 | Sets up cookies. |
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112 | |
113 | =cut |
114 | |
115 | sub prepare_cookies { shift->req->cookies( { CGI::Cookie->fetch } ) } |
116 | |
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117 | =item $c->prepare_headers |
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118 | |
119 | =cut |
120 | |
121 | sub prepare_headers { |
122 | my $c = shift; |
123 | $c->req->method( $c->cgi->request_method ); |
124 | for my $header ( $c->cgi->http ) { |
125 | ( my $field = $header ) =~ s/^HTTPS?_//; |
126 | $c->req->headers->header( $field => $c->cgi->http($header) ); |
127 | } |
128 | } |
129 | |
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130 | =item $c->prepare_parameters |
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131 | |
132 | =cut |
133 | |
134 | sub prepare_parameters { |
135 | my $c = shift; |
136 | my %vars = $c->cgi->Vars; |
137 | while ( my ( $key, $value ) = each %vars ) { |
138 | my @values = split "\0", $value; |
139 | $vars{$key} = @values <= 1 ? $values[0] : \@values; |
140 | } |
141 | $c->req->parameters( {%vars} ); |
142 | } |
143 | |
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144 | =item $c->prepare_path |
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145 | |
146 | =cut |
147 | |
148 | sub prepare_path { |
149 | my $c = shift; |
150 | $c->req->path( $c->cgi->url( -absolute => 1, -path_info => 1 ) ); |
151 | my $loc = $c->cgi->url( -absolute => 1 ); |
152 | no warnings 'uninitialized'; |
153 | $c->req->{path} =~ s/^($loc)?\///; |
154 | $c->req->{path} .= '/' if $c->req->path eq $loc; |
155 | my $base = $c->cgi->url; |
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156 | if ( $ENV{CATALYST_TEST} ) { |
157 | my $script = $c->cgi->script_name; |
158 | $base =~ s/$script$//i; |
159 | } |
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160 | $base = URI->new($base); |
161 | $base->path('/') if ( $ENV{CATALYST_TEST} || !$base->path ); |
162 | $c->req->base( $base->as_string ); |
163 | } |
164 | |
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165 | =item $c->prepare_request |
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166 | |
167 | =cut |
168 | |
169 | sub prepare_request { shift->cgi( CGI::Simple->new ) } |
170 | |
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171 | =item $c->prepare_uploads |
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172 | |
173 | =cut |
174 | |
175 | sub prepare_uploads { |
176 | my $c = shift; |
177 | for my $name ( $c->cgi->upload ) { |
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178 | $c->req->uploads->{$name} = { |
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179 | fh => $c->cgi->upload($name), |
180 | size => $c->cgi->upload_info( $name, 'size' ), |
181 | type => $c->cgi->upload_info( $name, 'mime' ) |
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182 | }; |
183 | } |
184 | } |
185 | |
186 | sub run { shift->handler } |
187 | |
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188 | =back |
189 | |
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190 | =head1 SEE ALSO |
191 | |
192 | L<Catalyst>. |
193 | |
194 | =head1 AUTHOR |
195 | |
196 | Sebastian Riedel, C<sri@cpan.org> |
197 | |
198 | =head1 COPYRIGHT |
199 | |
200 | This program is free software, you can redistribute it and/or modify it under |
201 | the same terms as Perl itself. |
202 | |
203 | =cut |
204 | |
205 | 1; |