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1 | package Catalyst::Controller::WrapCGI; |
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2 | |
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3 | use Moose; |
4 | use mro 'c3'; |
5 | |
6 | extends 'Catalyst::Controller'; |
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7 | |
8 | use HTTP::Request::AsCGI; |
9 | use HTTP::Request; |
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10 | use URI; |
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11 | use Catalyst::Exception (); |
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12 | |
13 | =head1 NAME |
14 | |
15 | Catalyst::Controller::WrapCGI - Run CGIs in Catalyst |
16 | |
17 | =head1 VERSION |
18 | |
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19 | Version 0.0029 |
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20 | |
21 | =cut |
22 | |
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23 | our $VERSION = '0.0029'; |
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24 | |
25 | =head1 SYNOPSIS |
26 | |
27 | package MyApp::Controller::Foo; |
28 | |
29 | use parent qw/Catalyst::Controller::WrapCGI/; |
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30 | use CGI (); |
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31 | |
32 | sub hello : Path('cgi-bin/hello.cgi') { |
33 | my ($self, $c) = @_; |
34 | |
35 | $self->cgi_to_response($c, sub { |
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36 | my $q = CGI->new; |
37 | print $q->header, $q->start_html('Hello'), |
38 | $q->h1('Catalyst Rocks!'), |
39 | $q->end_html; |
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40 | }); |
41 | } |
42 | |
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43 | In your .conf, configure which environment variables to pass: |
44 | |
45 | <Controller::Foo> |
46 | <CGI> |
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47 | username_field username # used for REMOTE_USER env var |
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48 | pass_env PERL5LIB |
49 | pass_env PATH |
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50 | pass_env /^MYAPP_/ |
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51 | kill_env MOD_PERL |
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52 | </CGI> |
53 | </Controller::Foo> |
54 | |
55 | =head1 DESCRIPTION |
56 | |
57 | Allows you to run Perl code in a CGI environment derived from your L<Catalyst> |
58 | context. |
59 | |
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60 | B<*WARNING*>: do not export L<CGI> functions into a Controller, it will break |
61 | with L<Catalyst> 5.8 onward. |
62 | |
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63 | If you just want to run CGIs from files, see L<Catalyst::Controller::CGIBin>. |
64 | |
65 | =head1 CONFIGURATION |
66 | |
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67 | C<< $your_controller->{CGI}{pass_env} >> should be an array of environment variables |
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68 | or regular expressions to pass through to your CGIs. Entries surrounded by C</> |
69 | characters are considered regular expressions. |
70 | |
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71 | C<< $your_controller->{CGI}{kill_env} >> should be an array of environment |
72 | variables or regular expressions to remove from the environment before passing |
73 | it to your CGIs. Entries surrounded by C</> characters are considered regular |
74 | expressions. |
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75 | |
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76 | Default is to pass the whole of C<%ENV>, except for C<MOD_PERL> (that is, the |
77 | default C<kill_env> is C<[ 'MOD_PERL' ]>. |
78 | |
79 | C<< $your_controller->{CGI}{username_field} >> should be the field for your user's name, which will be |
80 | read from C<< $c->user->obj >>. Defaults to 'username'. |
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81 | |
82 | See L</SYNOPSIS> for an example. |
83 | |
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84 | =cut |
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85 | |
86 | # Hack-around because Catalyst::Engine::HTTP goes and changes |
87 | # them to be the remote socket, and FCGI.pm does even dumber things. |
88 | |
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89 | open my $REAL_STDIN, "<&=".fileno(*STDIN); |
90 | open my $REAL_STDOUT, ">>&=".fileno(*STDOUT); |
91 | |
92 | =head1 METHODS |
93 | |
94 | =head2 $self->cgi_to_response($c, $coderef) |
95 | |
96 | Does the magic of running $coderef in a CGI environment, and populating the |
97 | appropriate parts of your Catalyst context with the results. |
98 | |
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99 | Calls wrap_cgi (below.) |
100 | |
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101 | =cut |
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102 | |
103 | sub cgi_to_response { |
104 | my ($self, $c, $script) = @_; |
105 | my $res = $self->wrap_cgi($c, $script); |
106 | |
107 | # if the CGI doesn't set the response code but sets location they were |
108 | # probably trying to redirect so set 302 for them |
109 | |
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110 | my $location = $res->headers->header('Location'); |
111 | |
112 | if (defined $location && length $location && $res->code == 200) { |
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113 | $c->res->status(302); |
114 | } else { |
115 | $c->res->status($res->code); |
116 | } |
117 | $c->res->body($res->content); |
118 | $c->res->headers($res->headers); |
119 | } |
120 | |
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121 | =head2 $self->wrap_cgi($c, $coderef) |
122 | |
123 | Runs $coderef in a CGI environment using L<HTTP::Request::AsCGI>, returns an |
124 | L<HTTP::Response>. |
125 | |
126 | The CGI environment is set up based on $c. |
127 | |
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128 | The environment variables to pass on are taken from the configuration for your |
129 | Controller, see L</SYNOPSIS> for an example. If you don't supply a list of |
130 | environment variables to pass, the whole of %ENV is used. |
131 | |
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132 | Used by cgi_to_response (above), which is probably what you want to use as well. |
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133 | |
134 | =cut |
135 | |
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136 | sub _filtered_env { |
137 | my ($self, $env) = @_; |
138 | my @ok; |
139 | |
140 | my $pass_env = $self->{CGI}{pass_env}; |
141 | $pass_env = [] if not defined $pass_env; |
142 | $pass_env = [ $pass_env ] unless ref $pass_env; |
143 | |
144 | my $kill_env = $self->{CGI}{kill_env}; |
145 | $kill_env = [ 'MOD_PERL' ] unless defined $kill_env; |
146 | $kill_env = [ $kill_env ] unless ref $kill_env; |
147 | |
148 | if (@$pass_env) { |
149 | for (@$pass_env) { |
150 | if (m!^/(.*)/\z!) { |
151 | my $re = qr/$1/; |
152 | push @ok, grep /$re/, keys %$env; |
153 | } else { |
154 | push @ok, $_; |
155 | } |
156 | } |
157 | } else { |
158 | @ok = keys %$env; |
159 | } |
160 | |
161 | for my $k (@$kill_env) { |
162 | if ($k =~ m!^/(.*)/\z!) { |
163 | my $re = qr/$1/; |
164 | @ok = grep { ! /$re/ } @ok; |
165 | } else { |
166 | @ok = grep { $_ ne $k } @ok; |
167 | } |
168 | } |
169 | return { map {; $_ => $env->{$_} } @ok }; |
170 | } |
171 | |
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172 | sub wrap_cgi { |
173 | my ($self, $c, $call) = @_; |
174 | my $req = HTTP::Request->new( |
175 | map { $c->req->$_ } qw/method uri headers/ |
176 | ); |
177 | my $body = $c->req->body; |
178 | my $body_content = ''; |
179 | |
180 | $req->content_type($c->req->content_type); # set this now so we can override |
181 | |
182 | if ($body) { # Slurp from body filehandle |
183 | local $/; $body_content = <$body>; |
184 | } else { |
185 | my $body_params = $c->req->body_parameters; |
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186 | if (%$body_params) { |
187 | my $encoder = URI->new; |
188 | $encoder->query_form(%$body_params); |
189 | $body_content = $encoder->query; |
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190 | $req->content_type('application/x-www-form-urlencoded'); |
191 | } |
192 | } |
193 | |
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194 | my $filtered_env = $self->_filtered_env(\%ENV); |
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195 | |
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196 | $req->content($body_content); |
197 | $req->content_length(length($body_content)); |
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198 | |
199 | my $username_field = $self->{CGI}{username_field} || 'username'; |
200 | |
201 | my $username = (($c->can('user_exists') && $c->user_exists) |
202 | ? eval { $c->user->obj->$username_field } |
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203 | : ''); |
204 | my $env = HTTP::Request::AsCGI->new( |
205 | $req, |
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206 | ($username ? (REMOTE_USER => $username) : ()), |
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207 | %$filtered_env, |
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208 | ); |
209 | |
210 | { |
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211 | local *STDIN = $REAL_STDIN; # restore the real ones so the filenos |
212 | local *STDOUT = $REAL_STDOUT; # are 0 and 1 for the env setup |
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213 | |
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214 | my $old = select($REAL_STDOUT); # in case somebody just calls 'print' |
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215 | |
216 | my $saved_error; |
217 | |
218 | $env->setup; |
219 | eval { $call->() }; |
220 | $saved_error = $@; |
221 | $env->restore; |
222 | |
223 | select($old); |
224 | |
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225 | Catalyst::Exception->throw( |
226 | message => "CGI invocation failed: $saved_error" |
227 | ) if $saved_error; |
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228 | } |
229 | |
230 | return $env->response; |
231 | } |
232 | |
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233 | =head1 ACKNOWLEDGEMENTS |
234 | |
235 | Original development sponsored by L<http://www.altinity.com/> |
236 | |
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237 | =head1 SEE ALSO |
238 | |
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239 | L<Catalyst::Controller::CGIBin>, L<CatalystX::GlobalContext>, |
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240 | L<Catalyst::Controller>, L<CGI>, L<Catalyst> |
241 | |
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242 | =head1 AUTHOR |
243 | |
244 | Matt S. Trout, C<< <mst at shadowcat.co.uk> >> |
245 | |
246 | =head1 BUGS |
247 | |
248 | Please report any bugs or feature requests to C<bug-catalyst-controller-wrapcgi |
249 | at rt.cpan.org>, or through the web interface at |
250 | L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Catalyst-Controller-WrapCGI>. |
251 | I will be notified, and then you'll automatically be notified of progress on |
252 | your bug as I make changes. |
253 | |
254 | =head1 SUPPORT |
255 | |
256 | More information at: |
257 | |
258 | =over 4 |
259 | |
260 | =item * RT: CPAN's request tracker |
261 | |
262 | L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Catalyst-Controller-WrapCGI> |
263 | |
264 | =item * AnnoCPAN: Annotated CPAN documentation |
265 | |
266 | L<http://annocpan.org/dist/Catalyst-Controller-WrapCGI> |
267 | |
268 | =item * CPAN Ratings |
269 | |
270 | L<http://cpanratings.perl.org/d/Catalyst-Controller-WrapCGI> |
271 | |
272 | =item * Search CPAN |
273 | |
274 | L<http://search.cpan.org/dist/Catalyst-Controller-WrapCGI> |
275 | |
276 | =back |
277 | |
278 | =head1 COPYRIGHT & LICENSE |
279 | |
280 | Copyright (c) 2008 Matt S. Trout |
281 | |
282 | This program is free software; you can redistribute it and/or modify it |
283 | under the same terms as Perl itself. |
284 | |
285 | =cut |
286 | |
287 | 1; # End of Catalyst::Controller::WrapCGI |
288 | |
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289 | # vim: expandtab shiftwidth=2 ts=2 tw=80: |