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1 | package Catalyst::Controller::CGIBin; |
2 | |
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3 | use Moose; |
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4 | use Moose::Util::TypeConstraints; |
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5 | use mro 'c3'; |
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6 | |
7 | extends 'Catalyst::Controller::WrapCGI'; |
8 | |
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9 | use File::Find::Rule (); |
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10 | use File::Spec::Functions qw/splitdir abs2rel/; |
11 | use IPC::Open3; |
12 | use Symbol 'gensym'; |
13 | use List::MoreUtils 'any'; |
14 | use IO::File (); |
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15 | use File::Temp 'tempfile'; |
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16 | use File::pushd; |
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17 | use CGI::Compile; |
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18 | |
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19 | use namespace::clean -except => 'meta'; |
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20 | |
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21 | =head1 NAME |
22 | |
23 | Catalyst::Controller::CGIBin - Serve CGIs from root/cgi-bin |
24 | |
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25 | =cut |
26 | |
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27 | our $VERSION = '0.030'; |
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28 | |
29 | =head1 SYNOPSIS |
30 | |
31 | In your controller: |
32 | |
33 | package MyApp::Controller::Foo; |
34 | |
35 | use parent qw/Catalyst::Controller::CGIBin/; |
36 | |
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37 | In your .conf: |
38 | |
39 | <Controller::Foo> |
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40 | cgi_root_path cgi-bin |
41 | cgi_dir cgi-bin |
42 | cgi_chain_root /optional/private/path/to/Chained/root |
43 | cgi_file_pattern *.cgi |
44 | # or regex |
45 | cgi_file_pattern /\.pl\z/ |
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46 | <CGI> |
47 | username_field username # used for REMOTE_USER env var |
48 | pass_env PERL5LIB |
49 | pass_env PATH |
50 | pass_env /^MYAPP_/ |
51 | </CGI> |
52 | </Controller::Foo> |
53 | |
54 | =head1 DESCRIPTION |
55 | |
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56 | Dispatches to CGI files in root/cgi-bin for /cgi-bin/ paths. |
57 | |
58 | Unlike L<ModPerl::Registry> this module does _NOT_ stat and recompile the CGI |
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59 | for every invocation. This may be supported in the future if there's interest. |
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60 | |
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61 | CGI paths are converted into action names using L</cgi_action>. |
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62 | |
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63 | Inherits from L<Catalyst::Controller::WrapCGI>, see the documentation for that |
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64 | module for other configuration information. |
65 | |
66 | =head1 CONFIG PARAMS |
67 | |
68 | =head2 cgi_root_path |
69 | |
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70 | The global URI path prefix for CGIs, defaults to C<cgi-bin>. |
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71 | |
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72 | =head2 cgi_chain_root |
73 | |
74 | By default L<Path|Catalyst::DispatchType::Path> actions are created for CGIs, |
75 | but if you specify this option, the actions will be created as |
76 | L<Chained|Catalyst::DispatchType::Chained> end-points, chaining off the |
77 | specified private path. |
78 | |
79 | If this option is used, the L</cgi_root_path> option is ignored. The root path |
80 | will be determined by your chain. |
81 | |
82 | The L<PathPart|Catalyst::DispatchType::Chained/PathPart> of the action will be |
83 | the path to the CGI file. |
84 | |
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85 | =head2 cgi_dir |
86 | |
87 | Path from which to read CGI files. Can be relative to C<$MYAPP_HOME/root> or |
88 | absolute. Defaults to C<$MYAPP_HOME/root/cgi-bin>. |
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89 | |
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90 | =head2 cgi_file_pattern |
91 | |
92 | By default all files in L</cgi_dir> will be loaded as CGIs, however, with this |
93 | option you can specify either a glob or a regex to match the names of files you |
94 | want to be loaded. |
95 | |
96 | Can be an array of globs/regexes as well. |
97 | |
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98 | =cut |
99 | |
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100 | { my $stringified = subtype as 'Str'; |
101 | coerce $stringified, |
102 | from 'Object', |
103 | via { "$_" }; |
104 | |
105 | has cgi_root_path => (is => 'ro', coerce => 1, isa => $stringified, default => 'cgi-bin' ); |
106 | has cgi_chain_root => (is => 'ro', isa => 'Str'); |
107 | has cgi_dir => (is => 'ro', coerce => 1, isa => $stringified, default => 'cgi-bin'); |
108 | has cgi_file_pattern => (is => 'rw', default => sub { ['*'] }); |
109 | |
110 | } |
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111 | |
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112 | sub register_actions { |
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113 | my ($self, $app) = @_; |
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114 | |
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115 | my $cgi_bin; |
116 | if( File::Spec->file_name_is_absolute($self->cgi_dir) ) { |
117 | $cgi_bin = $self->cgi_dir; |
118 | } elsif( File::Spec->file_name_is_absolute( $app->config->{root} ) ) { |
119 | $cgi_bin = File::Spec->catdir( $app->config->{root}, $self->cgi_dir ); |
120 | } else { |
121 | $cgi_bin = $app->path_to( $app->config->{root}, $self->cgi_dir); |
122 | } |
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123 | |
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124 | my $namespace = $self->action_namespace($app); |
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125 | |
126 | my $class = ref $self || $self; |
127 | |
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128 | my $patterns = $self->cgi_file_pattern; |
129 | $patterns = [ $patterns ] if not ref $patterns; |
130 | for my $pat (@$patterns) { |
131 | if ($pat =~ m{^/(.*)/\z}) { |
132 | $pat = qr/$1/; |
133 | } |
134 | } |
135 | $self->cgi_file_pattern($patterns); |
136 | |
137 | for my $file (File::Find::Rule->file->name(@$patterns)->in($cgi_bin)) { |
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138 | my $cgi_path = abs2rel($file, $cgi_bin); |
139 | |
140 | next if any { $_ eq '.svn' } splitdir $cgi_path; |
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141 | next if $cgi_path =~ /\.swp\z/; |
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142 | |
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143 | my $path = join '/' => splitdir($cgi_path); |
144 | my $action_name = $self->cgi_action($path); |
145 | my $reverse = $namespace ? "$namespace/$action_name" : $action_name; |
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146 | |
147 | my $attrs = do { |
148 | if (my $chain_root = $self->cgi_chain_root) { |
149 | { Chained => [ $chain_root ], PathPart => [ $path ], Args => [] }; |
150 | } |
151 | else { |
152 | { Path => [ $self->cgi_path($path) ] }; |
153 | } |
154 | }; |
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155 | |
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156 | my ($cgi, $type); |
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157 | |
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158 | if ($self->is_perl_cgi($file)) { # syntax check passed |
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159 | $type = 'Perl'; |
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160 | $cgi = $self->wrap_perl_cgi($file, $action_name); |
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161 | } else { |
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162 | $type = 'Non-Perl'; |
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163 | $cgi = $self->wrap_nonperl_cgi($file, $action_name); |
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164 | } |
165 | |
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166 | $app->log->info("Registering root/cgi-bin/$cgi_path as a $type CGI.") |
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167 | if $app->debug; |
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168 | |
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169 | my $code = sub { |
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170 | my ($controller, $context) = @_; |
171 | $controller->cgi_to_response($context, $cgi) |
172 | }; |
173 | |
174 | my $action = $self->create_action( |
175 | name => $action_name, |
176 | code => $code, |
177 | reverse => $reverse, |
178 | namespace => $namespace, |
179 | class => $class, |
180 | attributes => $attrs |
181 | ); |
182 | |
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183 | $app->dispatcher->register($app, $action); |
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184 | } |
185 | |
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186 | $self->next::method($app, @_); |
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187 | |
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188 | # Tell Static::Simple to ignore cgi_dir |
189 | if ($cgi_bin =~ /^@{[ $app->path_to('root') ]}/) { |
190 | my $rel = File::Spec->abs2rel($cgi_bin, $app->path_to('root')); |
191 | |
192 | if (!any { $_ eq $rel } |
193 | @{ $app->config->{static}{ignore_dirs}||[] }) { |
194 | push @{ $app->config->{static}{ignore_dirs} }, $rel; |
195 | } |
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196 | } |
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197 | } |
198 | |
199 | =head1 METHODS |
200 | |
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201 | =head2 cgi_action |
202 | |
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203 | C<< $self->cgi_action($cgi) >> |
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204 | |
205 | Takes a path to a CGI from C<root/cgi-bin> such as C<foo/bar.cgi> and returns |
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206 | the action name it is registered as. |
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207 | |
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208 | =cut |
209 | |
210 | sub cgi_action { |
211 | my ($self, $cgi) = @_; |
212 | |
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213 | my $action_name = 'CGI_' . $cgi; |
214 | $action_name =~ s/([^A-Za-z0-9_])/sprintf("_%2x", unpack("C", $1))/eg; |
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215 | |
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216 | return $action_name; |
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217 | } |
218 | |
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219 | =head2 cgi_path |
220 | |
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221 | C<< $self->cgi_path($cgi) >> |
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222 | |
223 | Takes a path to a CGI from C<root/cgi-bin> such as C<foo/bar.cgi> and returns |
224 | the public path it should be registered under. |
225 | |
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226 | The default is to prefix with C<$cgi_root_path/>, using the C<cgi_root_path> |
227 | config setting, above. |
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228 | |
229 | =cut |
230 | |
231 | sub cgi_path { |
232 | my ($self, $cgi) = @_; |
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233 | |
234 | my $root = $self->cgi_root_path; |
235 | $root =~ s{/*$}{}; |
236 | return "$root/$cgi"; |
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237 | } |
238 | |
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239 | =head2 is_perl_cgi |
240 | |
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241 | C<< $self->is_perl_cgi($path) >> |
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242 | |
243 | Tries to figure out whether the CGI is Perl or not. |
244 | |
245 | If it's Perl, it will be inlined into a sub instead of being forked off, see |
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246 | L</wrap_perl_cgi>. |
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247 | |
248 | =cut |
249 | |
250 | sub is_perl_cgi { |
251 | my ($self, $cgi) = @_; |
252 | |
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253 | my (undef, $tempfile) = tempfile; |
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254 | |
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255 | my $pid = fork; |
256 | die "Cannot fork: $!" unless defined $pid; |
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257 | |
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258 | if ($pid) { |
259 | waitpid $pid, 0; |
260 | my $errors = IO::File->new($tempfile)->getline; |
261 | unlink $tempfile; |
262 | return $errors ? 0 : 1; |
263 | } |
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264 | |
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265 | # child |
266 | local *NULL; |
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267 | open NULL, '>', File::Spec->devnull; |
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268 | open STDOUT, '>&', \*NULL; |
269 | open STDERR, '>&', \*NULL; |
270 | close STDIN; |
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271 | |
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272 | eval { $self->wrap_perl_cgi($cgi, '__DUMMY__') }; |
273 | |
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274 | IO::File->new(">$tempfile")->print($@); |
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275 | |
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276 | exit; |
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277 | } |
278 | |
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279 | =head2 wrap_perl_cgi |
280 | |
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281 | C<< $self->wrap_perl_cgi($path, $action_name) >> |
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282 | |
283 | Takes the path to a Perl CGI and returns a coderef suitable for passing to |
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284 | cgi_to_response (from L<Catalyst::Controller::WrapCGI>) using L<CGI::Compile>. |
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285 | |
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286 | C<$action_name> is the generated name for the action representing the CGI file |
287 | from C<cgi_action>. |
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288 | |
289 | This is similar to how L<ModPerl::Registry> works, but will only work for |
290 | well-written CGIs. Otherwise, you may have to override this method to do |
291 | something more involved (see L<ModPerl::PerlRun>.) |
292 | |
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293 | Scripts with C<__DATA__> sections now work too, as well as scripts that call |
294 | C<exit()>. |
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295 | |
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296 | =cut |
297 | |
298 | sub wrap_perl_cgi { |
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299 | my ($self, $cgi, $action_name) = @_; |
300 | |
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301 | return CGI::Compile->compile($cgi, |
302 | "Catalyst::Controller::CGIBin::_CGIs_::$action_name"); |
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303 | } |
304 | |
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305 | =head2 wrap_nonperl_cgi |
306 | |
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307 | C<< $self->wrap_nonperl_cgi($path, $action_name) >> |
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308 | |
309 | Takes the path to a non-Perl CGI and returns a coderef for executing it. |
310 | |
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311 | C<$action_name> is the generated name for the action representing the CGI file. |
312 | |
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313 | By default returns something like: |
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314 | |
315 | sub { system $path } |
316 | |
317 | =cut |
318 | |
319 | sub wrap_nonperl_cgi { |
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320 | my ($self, $cgi, $action_name) = @_; |
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321 | |
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322 | return sub { |
323 | system $cgi; |
324 | |
325 | if ($? == -1) { |
326 | die "failed to execute CGI '$cgi': $!"; |
327 | } |
328 | elsif ($? & 127) { |
329 | die sprintf "CGI '$cgi' died with signal %d, %s coredump", |
330 | ($? & 127), ($? & 128) ? 'with' : 'without'; |
331 | } |
332 | else { |
333 | my $exit_code = $? >> 8; |
334 | |
335 | return 0 if $exit_code == 0; |
336 | |
337 | die "CGI '$cgi' exited non-zero with: $exit_code"; |
338 | } |
339 | }; |
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340 | } |
341 | |
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342 | __PACKAGE__->meta->make_immutable; |
343 | |
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344 | =head1 SEE ALSO |
345 | |
346 | L<Catalyst::Controller::WrapCGI>, L<CatalystX::GlobalContext>, |
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347 | L<Catalyst::Controller>, L<CGI>, L<CGI::Compile>, L<Catalyst> |
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348 | |
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349 | =head1 BUGS |
350 | |
351 | Please report any bugs or feature requests to C<bug-catalyst-controller-wrapcgi at |
352 | rt.cpan.org>, or through the web interface at |
353 | L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Catalyst-Controller-WrapCGI>. |
354 | I will be notified, and then you'll automatically be notified of progress on |
355 | your bug as I make changes. |
356 | |
357 | =head1 SUPPORT |
358 | |
359 | More information at: |
360 | |
361 | =over 4 |
362 | |
363 | =item * RT: CPAN's request tracker |
364 | |
365 | L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Catalyst-Controller-WrapCGI> |
366 | |
367 | =item * AnnoCPAN: Annotated CPAN documentation |
368 | |
369 | L<http://annocpan.org/dist/Catalyst-Controller-WrapCGI> |
370 | |
371 | =item * CPAN Ratings |
372 | |
373 | L<http://cpanratings.perl.org/d/Catalyst-Controller-WrapCGI> |
374 | |
375 | =item * Search CPAN |
376 | |
377 | L<http://search.cpan.org/dist/Catalyst-Controller-WrapCGI> |
378 | |
379 | =back |
380 | |
efa4a434 |
381 | =head1 AUTHOR |
382 | |
383 | See L<Catalyst::Controller::WrapCGI/AUTHOR> and |
384 | L<Catalyst::Controller::WrapCGI/CONTRIBUTORS>. |
385 | |
21a20b7e |
386 | =head1 COPYRIGHT & LICENSE |
387 | |
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388 | Copyright (c) 2008-2009 L<Catalyst::Controller::WrapCGI/AUTHOR> and |
389 | L<Catalyst::Controller::WrapCGI/CONTRIBUTORS>. |
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390 | |
391 | This program is free software; you can redistribute it and/or modify it |
392 | under the same terms as Perl itself. |
393 | |
394 | =cut |
395 | |
396 | 1; # End of Catalyst::Controller::CGIBin |
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397 | # vim:et sw=4 sts=4 tw=0: |