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1 | package Catalyst::Controller::WrapCGI; |
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2 | |
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3 | use strict; |
4 | use warnings; |
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5 | use parent 'Catalyst::Controller'; |
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6 | |
7 | use HTTP::Request::AsCGI; |
8 | use HTTP::Request; |
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9 | use URI; |
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10 | use Catalyst::Exception (); |
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11 | |
12 | =head1 NAME |
13 | |
14 | Catalyst::Controller::WrapCGI - Run CGIs in Catalyst |
15 | |
16 | =head1 VERSION |
17 | |
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18 | Version 0.0021 |
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19 | |
20 | =cut |
21 | |
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22 | our $VERSION = '0.0021'; |
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23 | |
24 | =head1 SYNOPSIS |
25 | |
26 | package MyApp::Controller::Foo; |
27 | |
28 | use parent qw/Catalyst::Controller::WrapCGI/; |
29 | |
30 | sub hello : Path('cgi-bin/hello.cgi') { |
31 | my ($self, $c) = @_; |
32 | |
33 | $self->cgi_to_response($c, sub { |
34 | use CGI ':standard'; |
35 | |
36 | print header, start_html('Hello'), |
37 | h1('Catalyst Rocks!'), |
38 | end_html; |
39 | }); |
40 | } |
41 | |
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42 | In your .conf, configure which environment variables to pass: |
43 | |
44 | <Controller::Foo> |
45 | <CGI> |
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46 | username_field username # used for REMOTE_USER env var |
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47 | pass_env PERL5LIB |
48 | pass_env PATH |
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49 | pass_env /^MYAPP_/ |
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50 | </CGI> |
51 | </Controller::Foo> |
52 | |
53 | =head1 DESCRIPTION |
54 | |
55 | Allows you to run Perl code in a CGI environment derived from your L<Catalyst> |
56 | context. |
57 | |
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58 | If you just want to run CGIs from files, see L<Catalyst::Controller::CGIBin>. |
59 | |
60 | =head1 CONFIGURATION |
61 | |
62 | C<$your_controller->{CGI}{pass_env}> should be an array of environment variables |
63 | or regular expressions to pass through to your CGIs. Entries surrounded by C</> |
64 | characters are considered regular expressions. |
65 | |
66 | Default is to pass the whole of C<%ENV>. |
67 | |
68 | C<{CGI}{username_field}> should be the field for your user's name, which will be |
69 | read from C<$c->user->obj>. Defaults to 'username'. |
70 | |
71 | See L</SYNOPSIS> for an example. |
72 | |
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73 | =cut |
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74 | |
75 | # Hack-around because Catalyst::Engine::HTTP goes and changes |
76 | # them to be the remote socket, and FCGI.pm does even dumber things. |
77 | |
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78 | open my $REAL_STDIN, "<&=".fileno(*STDIN); |
79 | open my $REAL_STDOUT, ">>&=".fileno(*STDOUT); |
80 | |
81 | =head1 METHODS |
82 | |
83 | =head2 $self->cgi_to_response($c, $coderef) |
84 | |
85 | Does the magic of running $coderef in a CGI environment, and populating the |
86 | appropriate parts of your Catalyst context with the results. |
87 | |
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88 | Calls wrap_cgi (below.) |
89 | |
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90 | =cut |
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91 | |
92 | sub cgi_to_response { |
93 | my ($self, $c, $script) = @_; |
94 | my $res = $self->wrap_cgi($c, $script); |
95 | |
96 | # if the CGI doesn't set the response code but sets location they were |
97 | # probably trying to redirect so set 302 for them |
98 | |
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99 | my $location = $res->headers->header('Location'); |
100 | |
101 | if (defined $location && length $location && $res->code == 200) { |
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102 | $c->res->status(302); |
103 | } else { |
104 | $c->res->status($res->code); |
105 | } |
106 | $c->res->body($res->content); |
107 | $c->res->headers($res->headers); |
108 | } |
109 | |
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110 | =head2 $self->wrap_cgi($c, $coderef) |
111 | |
112 | Runs $coderef in a CGI environment using L<HTTP::Request::AsCGI>, returns an |
113 | L<HTTP::Response>. |
114 | |
115 | The CGI environment is set up based on $c. |
116 | |
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117 | The environment variables to pass on are taken from the configuration for your |
118 | Controller, see L</SYNOPSIS> for an example. If you don't supply a list of |
119 | environment variables to pass, the whole of %ENV is used. |
120 | |
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121 | Used by cgi_to_response (above), which is probably what you want to use as well. |
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122 | |
123 | =cut |
124 | |
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125 | sub wrap_cgi { |
126 | my ($self, $c, $call) = @_; |
127 | my $req = HTTP::Request->new( |
128 | map { $c->req->$_ } qw/method uri headers/ |
129 | ); |
130 | my $body = $c->req->body; |
131 | my $body_content = ''; |
132 | |
133 | $req->content_type($c->req->content_type); # set this now so we can override |
134 | |
135 | if ($body) { # Slurp from body filehandle |
136 | local $/; $body_content = <$body>; |
137 | } else { |
138 | my $body_params = $c->req->body_parameters; |
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139 | if (%$body_params) { |
140 | my $encoder = URI->new; |
141 | $encoder->query_form(%$body_params); |
142 | $body_content = $encoder->query; |
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143 | $req->content_type('application/x-www-form-urlencoded'); |
144 | } |
145 | } |
146 | |
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147 | my @env; |
148 | |
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149 | my $pass_env = $self->{CGI}{pass_env}; |
150 | $pass_env = [] if not defined $pass_env; |
151 | $pass_env = [ $pass_env ] unless ref $pass_env; |
152 | |
153 | for (@$pass_env) { |
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154 | if (m!^/(.*)/\z!) { |
155 | my $re = qr/$1/; |
156 | push @env, grep /$re/, keys %ENV; |
157 | } else { |
158 | push @env, $_; |
159 | } |
160 | } |
161 | |
162 | @env = keys %ENV unless @env; |
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163 | |
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164 | $req->content($body_content); |
165 | $req->content_length(length($body_content)); |
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166 | |
167 | my $username_field = $self->{CGI}{username_field} || 'username'; |
168 | |
169 | my $username = (($c->can('user_exists') && $c->user_exists) |
170 | ? eval { $c->user->obj->$username_field } |
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171 | : ''); |
172 | my $env = HTTP::Request::AsCGI->new( |
173 | $req, |
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174 | ($username ? (REMOTE_USER => $username) : ()), |
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175 | map { ($_, $ENV{$_}) } @env |
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176 | ); |
177 | |
178 | { |
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179 | local *STDIN = $REAL_STDIN; # restore the real ones so the filenos |
180 | local *STDOUT = $REAL_STDOUT; # are 0 and 1 for the env setup |
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181 | |
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182 | my $old = select($REAL_STDOUT); # in case somebody just calls 'print' |
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183 | |
184 | my $saved_error; |
185 | |
186 | $env->setup; |
187 | eval { $call->() }; |
188 | $saved_error = $@; |
189 | $env->restore; |
190 | |
191 | select($old); |
192 | |
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193 | Catalyst::Exception->throw( |
194 | message => "CGI invocation failed: $saved_error" |
195 | ) if $saved_error; |
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196 | } |
197 | |
198 | return $env->response; |
199 | } |
200 | |
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201 | =head1 ACKNOWLEDGEMENTS |
202 | |
203 | Original development sponsored by L<http://www.altinity.com/> |
204 | |
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205 | =head1 SEE ALSO |
206 | |
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207 | L<Catalyst::Controller::CGIBin>, L<CatalystX::GlobalContext>, |
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208 | L<Catalyst::Controller>, L<CGI>, L<Catalyst> |
209 | |
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210 | =head1 AUTHOR |
211 | |
212 | Matt S. Trout, C<< <mst at shadowcat.co.uk> >> |
213 | |
214 | =head1 BUGS |
215 | |
216 | Please report any bugs or feature requests to C<bug-catalyst-controller-wrapcgi |
217 | at rt.cpan.org>, or through the web interface at |
218 | L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Catalyst-Controller-WrapCGI>. |
219 | I will be notified, and then you'll automatically be notified of progress on |
220 | your bug as I make changes. |
221 | |
222 | =head1 SUPPORT |
223 | |
224 | More information at: |
225 | |
226 | =over 4 |
227 | |
228 | =item * RT: CPAN's request tracker |
229 | |
230 | L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Catalyst-Controller-WrapCGI> |
231 | |
232 | =item * AnnoCPAN: Annotated CPAN documentation |
233 | |
234 | L<http://annocpan.org/dist/Catalyst-Controller-WrapCGI> |
235 | |
236 | =item * CPAN Ratings |
237 | |
238 | L<http://cpanratings.perl.org/d/Catalyst-Controller-WrapCGI> |
239 | |
240 | =item * Search CPAN |
241 | |
242 | L<http://search.cpan.org/dist/Catalyst-Controller-WrapCGI> |
243 | |
244 | =back |
245 | |
246 | =head1 COPYRIGHT & LICENSE |
247 | |
248 | Copyright (c) 2008 Matt S. Trout |
249 | |
250 | This program is free software; you can redistribute it and/or modify it |
251 | under the same terms as Perl itself. |
252 | |
253 | =cut |
254 | |
255 | 1; # End of Catalyst::Controller::WrapCGI |
256 | |
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257 | # vim: expandtab shiftwidth=2 ts=2 tw=80: |