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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 | |
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8 | use HTTP::Request::AsCGI (); |
9 | use HTTP::Request (); |
10 | use URI (); |
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11 | use Catalyst::Exception (); |
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12 | use URI::Escape; |
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13 | use HTTP::Request::Common; |
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14 | |
15 | use namespace::clean -except => 'meta'; |
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16 | |
17 | =head1 NAME |
18 | |
19 | Catalyst::Controller::WrapCGI - Run CGIs in Catalyst |
20 | |
21 | =head1 VERSION |
22 | |
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23 | Version 0.0035 |
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24 | |
25 | =cut |
26 | |
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27 | our $VERSION = '0.0035'; |
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28 | |
29 | =head1 SYNOPSIS |
30 | |
31 | package MyApp::Controller::Foo; |
32 | |
33 | use parent qw/Catalyst::Controller::WrapCGI/; |
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34 | use CGI (); |
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35 | |
36 | sub hello : Path('cgi-bin/hello.cgi') { |
37 | my ($self, $c) = @_; |
38 | |
39 | $self->cgi_to_response($c, sub { |
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40 | my $q = CGI->new; |
41 | print $q->header, $q->start_html('Hello'), |
42 | $q->h1('Catalyst Rocks!'), |
43 | $q->end_html; |
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44 | }); |
45 | } |
46 | |
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47 | In your .conf, configure which environment variables to pass: |
48 | |
49 | <Controller::Foo> |
50 | <CGI> |
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51 | username_field username # used for REMOTE_USER env var |
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52 | pass_env PERL5LIB |
53 | pass_env PATH |
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54 | pass_env /^MYAPP_/ |
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55 | kill_env MYAPP_BAD |
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56 | </CGI> |
57 | </Controller::Foo> |
58 | |
59 | =head1 DESCRIPTION |
60 | |
61 | Allows you to run Perl code in a CGI environment derived from your L<Catalyst> |
62 | context. |
63 | |
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64 | B<*WARNING*>: do not export L<CGI> functions into a Controller, it will break |
65 | with L<Catalyst> 5.8 onward. |
66 | |
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67 | If you just want to run CGIs from files, see L<Catalyst::Controller::CGIBin>. |
68 | |
69 | =head1 CONFIGURATION |
70 | |
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71 | =head2 pass_env |
72 | |
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73 | C<< $your_controller->{CGI}{pass_env} >> should be an array of environment variables |
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74 | or regular expressions to pass through to your CGIs. Entries surrounded by C</> |
75 | characters are considered regular expressions. |
76 | |
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77 | =head2 kill_env |
78 | |
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79 | C<< $your_controller->{CGI}{kill_env} >> should be an array of environment |
80 | variables or regular expressions to remove from the environment before passing |
81 | it to your CGIs. Entries surrounded by C</> characters are considered regular |
82 | expressions. |
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83 | |
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84 | Default is to pass the whole of C<%ENV>, except for entries listed in |
85 | L</FILTERED ENVIRONMENT> below. |
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86 | |
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87 | =head2 username_field |
88 | |
89 | C<< $your_controller->{CGI}{username_field} >> should be the field for your |
90 | user's name, which will be read from C<< $c->user->obj >>. Defaults to |
91 | 'username'. |
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92 | |
93 | See L</SYNOPSIS> for an example. |
94 | |
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95 | =cut |
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96 | |
97 | # Hack-around because Catalyst::Engine::HTTP goes and changes |
98 | # them to be the remote socket, and FCGI.pm does even dumber things. |
99 | |
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100 | open my $REAL_STDIN, "<&=".fileno(*STDIN); |
101 | open my $REAL_STDOUT, ">>&=".fileno(*STDOUT); |
102 | |
103 | =head1 METHODS |
104 | |
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105 | =head2 cgi_to_response |
106 | |
107 | C<<$self->cgi_to_response($c, $coderef)>> |
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108 | |
109 | Does the magic of running $coderef in a CGI environment, and populating the |
110 | appropriate parts of your Catalyst context with the results. |
111 | |
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112 | Calls L</wrap_cgi>. |
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113 | |
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114 | =cut |
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115 | |
116 | sub cgi_to_response { |
117 | my ($self, $c, $script) = @_; |
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118 | |
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119 | my $res = $self->wrap_cgi($c, $script); |
120 | |
121 | # if the CGI doesn't set the response code but sets location they were |
122 | # probably trying to redirect so set 302 for them |
123 | |
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124 | my $location = $res->headers->header('Location'); |
125 | |
126 | if (defined $location && length $location && $res->code == 200) { |
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127 | $c->res->status(302); |
128 | } else { |
129 | $c->res->status($res->code); |
130 | } |
131 | $c->res->body($res->content); |
132 | $c->res->headers($res->headers); |
133 | } |
134 | |
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135 | =head2 wrap_cgi |
136 | |
137 | C<<$self->wrap_cgi($c, $coderef)>> |
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138 | |
139 | Runs $coderef in a CGI environment using L<HTTP::Request::AsCGI>, returns an |
140 | L<HTTP::Response>. |
141 | |
142 | The CGI environment is set up based on $c. |
143 | |
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144 | The environment variables to pass on are taken from the configuration for your |
145 | Controller, see L</SYNOPSIS> for an example. If you don't supply a list of |
146 | environment variables to pass, the whole of %ENV is used. |
147 | |
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148 | Used by L</cgi_to_response>, which is probably what you want to use as well. |
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149 | |
150 | =cut |
151 | |
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152 | sub wrap_cgi { |
153 | my ($self, $c, $call) = @_; |
154 | my $req = HTTP::Request->new( |
155 | map { $c->req->$_ } qw/method uri headers/ |
156 | ); |
157 | my $body = $c->req->body; |
158 | my $body_content = ''; |
159 | |
160 | $req->content_type($c->req->content_type); # set this now so we can override |
161 | |
162 | if ($body) { # Slurp from body filehandle |
163 | local $/; $body_content = <$body>; |
164 | } else { |
165 | my $body_params = $c->req->body_parameters; |
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166 | |
167 | if (my %uploads = %{ $c->req->uploads }) { |
168 | my $post = POST 'http://localhost/', |
169 | Content_Type => 'form-data', |
170 | Content => [ |
171 | %$body_params, |
172 | map { |
173 | my $upl = $uploads{$_}; |
174 | $_ => [ |
175 | undef, |
176 | $upl->filename, |
177 | Content => $upl->slurp, |
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178 | map { |
179 | my $header = $_; |
180 | map { $header => $_ } $upl->headers->header($header) |
181 | } $upl->headers->header_field_names |
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182 | ] |
183 | } keys %uploads |
184 | ]; |
185 | $body_content = $post->content; |
186 | $req->content_type($post->header('Content-Type')); |
187 | } elsif (%$body_params) { |
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188 | my $encoder = URI->new; |
189 | $encoder->query_form(%$body_params); |
190 | $body_content = $encoder->query; |
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191 | $req->content_type('application/x-www-form-urlencoded'); |
192 | } |
193 | } |
194 | |
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195 | my $filtered_env = $self->_filtered_env(\%ENV); |
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196 | |
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197 | $req->content($body_content); |
198 | $req->content_length(length($body_content)); |
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199 | |
200 | my $username_field = $self->{CGI}{username_field} || 'username'; |
201 | |
202 | my $username = (($c->can('user_exists') && $c->user_exists) |
203 | ? eval { $c->user->obj->$username_field } |
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204 | : ''); |
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205 | |
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206 | my $path_info = '/'.join '/' => map uri_escape_utf8($_), @{ $c->req->args }; |
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207 | |
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208 | my $env = HTTP::Request::AsCGI->new( |
209 | $req, |
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210 | ($username ? (REMOTE_USER => $username) : ()), |
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211 | %$filtered_env, |
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212 | PATH_INFO => $path_info, |
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213 | # eww, this is likely broken: |
214 | FILEPATH_INFO => '/'.$c->action.$path_info, |
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215 | SCRIPT_NAME => $c->uri_for($c->action)->path |
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216 | ); |
217 | |
218 | { |
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219 | local *STDIN = $REAL_STDIN; # restore the real ones so the filenos |
220 | local *STDOUT = $REAL_STDOUT; # are 0 and 1 for the env setup |
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221 | |
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222 | my $old = select($REAL_STDOUT); # in case somebody just calls 'print' |
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223 | |
224 | my $saved_error; |
225 | |
226 | $env->setup; |
227 | eval { $call->() }; |
228 | $saved_error = $@; |
229 | $env->restore; |
230 | |
231 | select($old); |
232 | |
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233 | Catalyst::Exception->throw( |
234 | message => "CGI invocation failed: $saved_error" |
235 | ) if $saved_error; |
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236 | } |
237 | |
238 | return $env->response; |
239 | } |
240 | |
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241 | =head1 FILTERED ENVIRONMENT |
242 | |
243 | If you don't use the L</pass_env> option to restrict which environment variables |
244 | are passed in, the default is to pass the whole of C<%ENV> except the variables |
245 | listed below. |
246 | |
247 | MOD_PERL |
248 | SERVER_SOFTWARE |
249 | SERVER_NAME |
250 | GATEWAY_INTERFACE |
251 | SERVER_PROTOCOL |
252 | SERVER_PORT |
253 | REQUEST_METHOD |
254 | PATH_INFO |
255 | PATH_TRANSLATED |
256 | SCRIPT_NAME |
257 | QUERY_STRING |
258 | REMOTE_HOST |
259 | REMOTE_ADDR |
260 | AUTH_TYPE |
261 | REMOTE_USER |
262 | REMOTE_IDENT |
263 | CONTENT_TYPE |
264 | CONTENT_LENGTH |
265 | HTTP_ACCEPT |
266 | HTTP_USER_AGENT |
267 | |
268 | C<%ENV> can be further trimmed using L</kill_env>. |
269 | |
270 | =cut |
271 | |
272 | my $DEFAULT_KILL_ENV = [qw/ |
273 | MOD_PERL SERVER_SOFTWARE SERVER_NAME GATEWAY_INTERFACE SERVER_PROTOCOL |
274 | SERVER_PORT REQUEST_METHOD PATH_INFO PATH_TRANSLATED SCRIPT_NAME QUERY_STRING |
275 | REMOTE_HOST REMOTE_ADDR AUTH_TYPE REMOTE_USER REMOTE_IDENT CONTENT_TYPE |
276 | CONTENT_LENGTH HTTP_ACCEPT HTTP_USER_AGENT |
277 | /]; |
278 | |
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279 | sub _filtered_env { |
280 | my ($self, $env) = @_; |
281 | my @ok; |
282 | |
283 | my $pass_env = $self->{CGI}{pass_env}; |
284 | $pass_env = [] if not defined $pass_env; |
285 | $pass_env = [ $pass_env ] unless ref $pass_env; |
286 | |
287 | my $kill_env = $self->{CGI}{kill_env}; |
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288 | $kill_env = $DEFAULT_KILL_ENV unless defined $kill_env; |
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289 | $kill_env = [ $kill_env ] unless ref $kill_env; |
290 | |
291 | if (@$pass_env) { |
292 | for (@$pass_env) { |
293 | if (m!^/(.*)/\z!) { |
294 | my $re = qr/$1/; |
295 | push @ok, grep /$re/, keys %$env; |
296 | } else { |
297 | push @ok, $_; |
298 | } |
299 | } |
300 | } else { |
301 | @ok = keys %$env; |
302 | } |
303 | |
304 | for my $k (@$kill_env) { |
305 | if ($k =~ m!^/(.*)/\z!) { |
306 | my $re = qr/$1/; |
307 | @ok = grep { ! /$re/ } @ok; |
308 | } else { |
309 | @ok = grep { $_ ne $k } @ok; |
310 | } |
311 | } |
312 | return { map {; $_ => $env->{$_} } @ok }; |
313 | } |
314 | |
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315 | __PACKAGE__->meta->make_immutable; |
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316 | |
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317 | =head1 DIRECT SOCKET/NPH SCRIPTS |
318 | |
319 | This currently won't work: |
320 | |
321 | #!/usr/bin/perl |
322 | |
323 | use CGI ':standard'; |
324 | |
325 | $| = 1; |
326 | |
327 | print header; |
328 | |
329 | for (0..1000) { |
330 | print $_, br, "\n"; |
331 | } |
332 | |
333 | because the coderef is executed synchronously with C<STDOUT> pointing to a temp |
334 | file. |
335 | |
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336 | =head1 ACKNOWLEDGEMENTS |
337 | |
338 | Original development sponsored by L<http://www.altinity.com/> |
339 | |
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340 | =head1 SEE ALSO |
341 | |
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342 | L<Catalyst::Controller::CGIBin>, L<CatalystX::GlobalContext>, |
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343 | L<Catalyst::Controller>, L<CGI>, L<Catalyst> |
344 | |
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345 | =head1 AUTHORS |
346 | |
347 | Originally written by: |
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348 | |
349 | Matt S. Trout, C<< <mst at shadowcat.co.uk> >> |
350 | |
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351 | Contributors: |
352 | |
353 | Rafael Kitover C<< <rkitover at cpan.org> >> |
354 | |
355 | Hans Dieter Pearcey C<< <hdp at cpan.org> >> |
356 | |
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357 | =head1 BUGS |
358 | |
359 | Please report any bugs or feature requests to C<bug-catalyst-controller-wrapcgi |
360 | at rt.cpan.org>, or through the web interface at |
361 | L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Catalyst-Controller-WrapCGI>. |
362 | I will be notified, and then you'll automatically be notified of progress on |
363 | your bug as I make changes. |
364 | |
365 | =head1 SUPPORT |
366 | |
367 | More information at: |
368 | |
369 | =over 4 |
370 | |
371 | =item * RT: CPAN's request tracker |
372 | |
373 | L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Catalyst-Controller-WrapCGI> |
374 | |
375 | =item * AnnoCPAN: Annotated CPAN documentation |
376 | |
377 | L<http://annocpan.org/dist/Catalyst-Controller-WrapCGI> |
378 | |
379 | =item * CPAN Ratings |
380 | |
381 | L<http://cpanratings.perl.org/d/Catalyst-Controller-WrapCGI> |
382 | |
383 | =item * Search CPAN |
384 | |
385 | L<http://search.cpan.org/dist/Catalyst-Controller-WrapCGI> |
386 | |
387 | =back |
388 | |
389 | =head1 COPYRIGHT & LICENSE |
390 | |
391 | Copyright (c) 2008 Matt S. Trout |
392 | |
393 | This program is free software; you can redistribute it and/or modify it |
394 | under the same terms as Perl itself. |
395 | |
396 | =cut |
397 | |
398 | 1; # End of Catalyst::Controller::WrapCGI |
399 | |
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400 | # vim: expandtab shiftwidth=2 ts=2 tw=80: |