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1 | package Catalyst::Controller::WrapCGI; |
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2 | |
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3 | use 5.008_001; |
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4 | use Moose; |
5 | use mro 'c3'; |
6 | |
7 | extends 'Catalyst::Controller'; |
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8 | |
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9 | use Catalyst::Exception (); |
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10 | use HTTP::Request::AsCGI (); |
11 | use HTTP::Request (); |
12 | use URI (); |
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13 | use URI::Escape; |
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14 | use HTTP::Request::Common; |
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15 | |
16 | use namespace::clean -except => 'meta'; |
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17 | |
18 | =head1 NAME |
19 | |
20 | Catalyst::Controller::WrapCGI - Run CGIs in Catalyst |
21 | |
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22 | =cut |
23 | |
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24 | our $VERSION = '0.035'; |
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25 | |
26 | =head1 SYNOPSIS |
27 | |
28 | package MyApp::Controller::Foo; |
29 | |
30 | use parent qw/Catalyst::Controller::WrapCGI/; |
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31 | use CGI (); |
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32 | |
33 | sub hello : Path('cgi-bin/hello.cgi') { |
34 | my ($self, $c) = @_; |
35 | |
36 | $self->cgi_to_response($c, sub { |
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37 | my $q = CGI->new; |
38 | print $q->header, $q->start_html('Hello'), |
39 | $q->h1('Catalyst Rocks!'), |
40 | $q->end_html; |
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41 | }); |
42 | } |
43 | |
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44 | In your .conf, configure which environment variables to pass: |
45 | |
46 | <Controller::Foo> |
47 | <CGI> |
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48 | username_field username # used for REMOTE_USER env var |
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49 | pass_env PERL5LIB |
50 | pass_env PATH |
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51 | pass_env /^MYAPP_/ |
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52 | kill_env MYAPP_BAD |
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53 | </CGI> |
54 | </Controller::Foo> |
55 | |
56 | =head1 DESCRIPTION |
57 | |
58 | Allows you to run Perl code in a CGI environment derived from your L<Catalyst> |
59 | context. |
60 | |
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61 | B<*WARNING*>: do not export L<CGI> functions into a Controller, it will break |
62 | with L<Catalyst> 5.8 onward. |
63 | |
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64 | If you just want to run CGIs from files, see L<Catalyst::Controller::CGIBin>. |
65 | |
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66 | C<REMOTE_USER> will be set to C<< $c->user->obj->$username_field >> if |
67 | available, or to C<< $c->req->remote_user >> otherwise. |
68 | |
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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 | |
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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 | |
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137 | C<< $self->wrap_cgi($c, $coderef) >> |
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138 | |
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139 | Runs C<$coderef> in a CGI environment using L<HTTP::Request::AsCGI>, returns an |
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140 | L<HTTP::Response>. |
141 | |
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142 | The CGI environment is set up based on C<$c>. |
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143 | |
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144 | The environment variables to pass on are taken from the configuration for your |
145 | Controller, see L</SYNOPSIS> for an example. If you don't supply a list of |
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146 | environment variables to pass, the whole of %ENV is used (with exceptions listed |
147 | in L</FILTERED ENVIRONMENT>. |
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148 | |
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149 | Used by L</cgi_to_response>, which is probably what you want to use as well. |
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150 | |
151 | =cut |
152 | |
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153 | sub wrap_cgi { |
154 | my ($self, $c, $call) = @_; |
155 | my $req = HTTP::Request->new( |
156 | map { $c->req->$_ } qw/method uri headers/ |
157 | ); |
158 | my $body = $c->req->body; |
159 | my $body_content = ''; |
160 | |
161 | $req->content_type($c->req->content_type); # set this now so we can override |
162 | |
163 | if ($body) { # Slurp from body filehandle |
164 | local $/; $body_content = <$body>; |
165 | } else { |
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166 | my $body_params = $c->req->body_parameters || {}; |
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167 | |
168 | if (my %uploads = %{ $c->req->uploads }) { |
169 | my $post = POST 'http://localhost/', |
170 | Content_Type => 'form-data', |
171 | Content => [ |
172 | %$body_params, |
173 | map { |
174 | my $upl = $uploads{$_}; |
175 | $_ => [ |
176 | undef, |
177 | $upl->filename, |
178 | Content => $upl->slurp, |
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179 | map { |
180 | my $header = $_; |
181 | map { $header => $_ } $upl->headers->header($header) |
182 | } $upl->headers->header_field_names |
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183 | ] |
184 | } keys %uploads |
185 | ]; |
186 | $body_content = $post->content; |
187 | $req->content_type($post->header('Content-Type')); |
188 | } elsif (%$body_params) { |
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189 | my $encoder = URI->new; |
190 | $encoder->query_form(%$body_params); |
191 | $body_content = $encoder->query; |
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192 | $req->content_type('application/x-www-form-urlencoded'); |
193 | } |
194 | } |
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 | : ''); |
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204 | |
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205 | $username ||= $c->req->remote_user if $c->req->can('remote_user'); |
206 | |
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207 | my $path_info = '/'.join '/' => map { |
208 | utf8::is_utf8($_) ? uri_escape_utf8($_) : uri_escape($_) |
209 | } @{ $c->req->args }; |
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210 | |
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211 | my $env = HTTP::Request::AsCGI->new( |
212 | $req, |
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213 | ($username ? (REMOTE_USER => $username) : ()), |
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214 | PATH_INFO => $path_info, |
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215 | # eww, this is likely broken: |
216 | FILEPATH_INFO => '/'.$c->action.$path_info, |
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217 | SCRIPT_NAME => $c->uri_for($c->action, $c->req->captures)->path |
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218 | ); |
219 | |
220 | { |
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221 | local *STDIN = $REAL_STDIN; # restore the real ones so the filenos |
222 | local *STDOUT = $REAL_STDOUT; # are 0 and 1 for the env setup |
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223 | |
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224 | my $old = select($REAL_STDOUT); # in case somebody just calls 'print' |
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225 | |
226 | my $saved_error; |
227 | |
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228 | local %ENV = %{ $self->_filtered_env(\%ENV) }; |
229 | |
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230 | $env->setup; |
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231 | eval { $call->() }; |
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232 | $saved_error = $@; |
233 | $env->restore; |
234 | |
235 | select($old); |
236 | |
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237 | if( $saved_error ) { |
238 | die $saved_error if ref $saved_error; |
239 | Catalyst::Exception->throw( |
240 | message => "CGI invocation failed: $saved_error" |
241 | ); |
242 | } |
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243 | } |
244 | |
245 | return $env->response; |
246 | } |
247 | |
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248 | =head1 FILTERED ENVIRONMENT |
249 | |
250 | If you don't use the L</pass_env> option to restrict which environment variables |
251 | are passed in, the default is to pass the whole of C<%ENV> except the variables |
252 | listed below. |
253 | |
254 | MOD_PERL |
255 | SERVER_SOFTWARE |
256 | SERVER_NAME |
257 | GATEWAY_INTERFACE |
258 | SERVER_PROTOCOL |
259 | SERVER_PORT |
260 | REQUEST_METHOD |
261 | PATH_INFO |
262 | PATH_TRANSLATED |
263 | SCRIPT_NAME |
264 | QUERY_STRING |
265 | REMOTE_HOST |
266 | REMOTE_ADDR |
267 | AUTH_TYPE |
268 | REMOTE_USER |
269 | REMOTE_IDENT |
270 | CONTENT_TYPE |
271 | CONTENT_LENGTH |
272 | HTTP_ACCEPT |
273 | HTTP_USER_AGENT |
274 | |
275 | C<%ENV> can be further trimmed using L</kill_env>. |
276 | |
277 | =cut |
278 | |
279 | my $DEFAULT_KILL_ENV = [qw/ |
280 | MOD_PERL SERVER_SOFTWARE SERVER_NAME GATEWAY_INTERFACE SERVER_PROTOCOL |
281 | SERVER_PORT REQUEST_METHOD PATH_INFO PATH_TRANSLATED SCRIPT_NAME QUERY_STRING |
282 | REMOTE_HOST REMOTE_ADDR AUTH_TYPE REMOTE_USER REMOTE_IDENT CONTENT_TYPE |
283 | CONTENT_LENGTH HTTP_ACCEPT HTTP_USER_AGENT |
284 | /]; |
285 | |
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286 | sub _filtered_env { |
287 | my ($self, $env) = @_; |
288 | my @ok; |
289 | |
290 | my $pass_env = $self->{CGI}{pass_env}; |
291 | $pass_env = [] if not defined $pass_env; |
292 | $pass_env = [ $pass_env ] unless ref $pass_env; |
293 | |
294 | my $kill_env = $self->{CGI}{kill_env}; |
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295 | $kill_env = $DEFAULT_KILL_ENV unless defined $kill_env; |
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296 | $kill_env = [ $kill_env ] unless ref $kill_env; |
297 | |
298 | if (@$pass_env) { |
299 | for (@$pass_env) { |
300 | if (m!^/(.*)/\z!) { |
301 | my $re = qr/$1/; |
302 | push @ok, grep /$re/, keys %$env; |
303 | } else { |
304 | push @ok, $_; |
305 | } |
306 | } |
307 | } else { |
308 | @ok = keys %$env; |
309 | } |
310 | |
311 | for my $k (@$kill_env) { |
312 | if ($k =~ m!^/(.*)/\z!) { |
313 | my $re = qr/$1/; |
314 | @ok = grep { ! /$re/ } @ok; |
315 | } else { |
316 | @ok = grep { $_ ne $k } @ok; |
317 | } |
318 | } |
319 | return { map {; $_ => $env->{$_} } @ok }; |
320 | } |
321 | |
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322 | __PACKAGE__->meta->make_immutable; |
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323 | |
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324 | =head1 DIRECT SOCKET/NPH SCRIPTS |
325 | |
326 | This currently won't work: |
327 | |
328 | #!/usr/bin/perl |
329 | |
330 | use CGI ':standard'; |
331 | |
332 | $| = 1; |
333 | |
334 | print header; |
335 | |
336 | for (0..1000) { |
337 | print $_, br, "\n"; |
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338 | sleep 1; |
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339 | } |
340 | |
341 | because the coderef is executed synchronously with C<STDOUT> pointing to a temp |
342 | file. |
343 | |
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344 | =head1 ACKNOWLEDGEMENTS |
345 | |
346 | Original development sponsored by L<http://www.altinity.com/> |
347 | |
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348 | =head1 SEE ALSO |
349 | |
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350 | L<Catalyst::Controller::CGIBin>, L<CatalystX::GlobalContext>, |
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351 | L<Catalyst::Controller>, L<CGI>, L<Catalyst> |
352 | |
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353 | =head1 BUGS |
354 | |
355 | Please report any bugs or feature requests to C<bug-catalyst-controller-wrapcgi |
356 | at rt.cpan.org>, or through the web interface at |
357 | L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Catalyst-Controller-WrapCGI>. |
358 | I will be notified, and then you'll automatically be notified of progress on |
359 | your bug as I make changes. |
360 | |
361 | =head1 SUPPORT |
362 | |
363 | More information at: |
364 | |
365 | =over 4 |
366 | |
367 | =item * RT: CPAN's request tracker |
368 | |
369 | L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Catalyst-Controller-WrapCGI> |
370 | |
371 | =item * AnnoCPAN: Annotated CPAN documentation |
372 | |
373 | L<http://annocpan.org/dist/Catalyst-Controller-WrapCGI> |
374 | |
375 | =item * CPAN Ratings |
376 | |
377 | L<http://cpanratings.perl.org/d/Catalyst-Controller-WrapCGI> |
378 | |
379 | =item * Search CPAN |
380 | |
381 | L<http://search.cpan.org/dist/Catalyst-Controller-WrapCGI> |
382 | |
383 | =back |
384 | |
efa4a434 |
385 | =head1 AUTHOR |
386 | |
387 | Matt S. Trout C<< <mst at shadowcat.co.uk> >> |
388 | |
389 | =head1 CONTRIBUTORS |
390 | |
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391 | Caelum: Rafael Kitover <rkitover@cpan.org> |
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392 | |
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393 | confound: Hans Dieter Pearcey <hdp@cpan.org> |
394 | |
395 | rbuels: Robert Buels <rbuels@gmail.com> |
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396 | |
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397 | Some code stolen from Tatsuhiko Miyagawa's L<CGI::Compile>. |
398 | |
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399 | =head1 COPYRIGHT & LICENSE |
400 | |
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401 | Copyright (c) 2008-2009 L<Catalyst::Controller::WrapCGI/AUTHOR> and |
402 | L<Catalyst::Controller::WrapCGI/CONTRIBUTORS>. |
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403 | |
404 | This program is free software; you can redistribute it and/or modify it |
405 | under the same terms as Perl itself. |
406 | |
407 | =cut |
408 | |
409 | 1; # End of Catalyst::Controller::WrapCGI |
410 | |
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411 | # vim: expandtab shiftwidth=2 ts=2 tw=80: |