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1 | package Catalyst::Plugin::Static::Simple; |
2 | |
3 | use strict; |
4 | use warnings; |
5 | use base qw/Class::Accessor::Fast Class::Data::Inheritable/; |
6 | use File::stat; |
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7 | use File::Spec::Functions qw/catdir no_upwards splitdir/; |
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8 | use IO::File; |
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9 | use MIME::Types; |
10 | use NEXT; |
11 | |
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12 | our $VERSION = '0.12'; |
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13 | |
14 | __PACKAGE__->mk_classdata( qw/_static_mime_types/ ); |
15 | __PACKAGE__->mk_accessors( qw/_static_file |
16 | _static_debug_message/ ); |
17 | |
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18 | sub prepare_action { |
19 | my $c = shift; |
20 | my $path = $c->req->path; |
21 | |
22 | # is the URI in a static-defined path? |
23 | foreach my $dir ( @{ $c->config->{static}->{dirs} } ) { |
24 | my $re = ( $dir =~ /^qr\//xms ) ? eval $dir : qr/^${dir}/; |
25 | if ($@) { |
26 | $c->error( "Error compiling static dir regex '$dir': $@" ); |
27 | } |
28 | if ( $path =~ $re ) { |
29 | if ( $c->_locate_static_file ) { |
30 | $c->_debug_msg( 'from static directory' ) |
31 | if ( $c->config->{static}->{debug} ); |
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32 | } else { |
33 | $c->_debug_msg( "404: file not found: $path" ) |
34 | if ( $c->config->{static}->{debug} ); |
35 | $c->res->status( 404 ); |
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36 | } |
37 | } |
38 | } |
39 | |
40 | # Does the path have an extension? |
41 | if ( $path =~ /.*\.(\S{1,})$/xms ) { |
42 | # and does it exist? |
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43 | $c->_locate_static_file; |
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44 | } |
45 | |
46 | return $c->NEXT::ACTUAL::prepare_action(@_); |
47 | } |
48 | |
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49 | sub dispatch { |
50 | my $c = shift; |
51 | |
52 | return if ( $c->res->status != 200 ); |
53 | |
54 | if ( $c->_static_file ) { |
55 | if ( $c->config->{static}->{no_logs} && $c->log->can('abort') ) { |
56 | $c->log->abort( 1 ); |
57 | } |
58 | return $c->_serve_static; |
59 | } |
60 | else { |
61 | return $c->NEXT::ACTUAL::dispatch(@_); |
62 | } |
63 | } |
64 | |
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65 | sub finalize { |
66 | my $c = shift; |
67 | |
68 | # display all log messages |
69 | if ( $c->config->{static}->{debug} && scalar @{$c->_debug_msg} ) { |
70 | $c->log->debug( 'Static::Simple: ' . join q{ }, @{$c->_debug_msg} ); |
71 | } |
72 | |
73 | if ( $c->res->status =~ /^(1\d\d|[23]04)$/xms ) { |
74 | $c->res->headers->remove_content_headers; |
75 | return $c->finalize_headers; |
76 | } |
77 | |
78 | return $c->NEXT::ACTUAL::finalize(@_); |
79 | } |
80 | |
81 | sub setup { |
82 | my $c = shift; |
83 | |
84 | $c->NEXT::setup(@_); |
85 | |
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86 | if ( Catalyst->VERSION le '5.33' ) { |
87 | require File::Slurp; |
88 | } |
89 | |
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90 | $c->config->{static}->{dirs} ||= []; |
91 | $c->config->{static}->{include_path} ||= [ $c->config->{root} ]; |
92 | $c->config->{static}->{mime_types} ||= {}; |
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93 | $c->config->{static}->{ignore_extensions} |
94 | ||= [ qw/tmpl tt tt2 html xhtml/ ]; |
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95 | $c->config->{static}->{ignore_dirs} ||= []; |
96 | $c->config->{static}->{debug} ||= $c->debug; |
97 | if ( ! defined $c->config->{static}->{no_logs} ) { |
98 | $c->config->{static}->{no_logs} = 1; |
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99 | } |
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100 | |
101 | # load up a MIME::Types object, only loading types with |
102 | # at least 1 file extension |
103 | $c->_static_mime_types( MIME::Types->new( only_complete => 1 ) ); |
104 | |
105 | # preload the type index hash so it's not built on the first request |
106 | $c->_static_mime_types->create_type_index; |
107 | } |
108 | |
109 | # Search through all included directories for the static file |
110 | # Based on Template Toolkit INCLUDE_PATH code |
111 | sub _locate_static_file { |
112 | my $c = shift; |
113 | |
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114 | my $path = catdir( no_upwards( splitdir( $c->req->path ) ) ); |
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115 | |
116 | my @ipaths = @{ $c->config->{static}->{include_path} }; |
117 | my $dpaths; |
118 | my $count = 64; # maximum number of directories to search |
119 | |
120 | DIR_CHECK: |
121 | while ( @ipaths && --$count) { |
122 | my $dir = shift @ipaths || next DIR_CHECK; |
123 | |
124 | if ( ref $dir eq 'CODE' ) { |
125 | eval { $dpaths = &$dir( $c ) }; |
126 | if ($@) { |
127 | $c->log->error( 'Static::Simple: include_path error: ' . $@ ); |
128 | } else { |
129 | unshift @ipaths, @$dpaths; |
130 | next DIR_CHECK; |
131 | } |
132 | } else { |
133 | $dir =~ s/\/$//xms; |
134 | if ( -d $dir && -f $dir . '/' . $path ) { |
135 | |
136 | # do we need to ignore the file? |
137 | for my $ignore ( @{ $c->config->{static}->{ignore_dirs} } ) { |
138 | $ignore =~ s{/$}{}; |
139 | if ( $path =~ /^$ignore\// ) { |
140 | $c->_debug_msg( "Ignoring directory `$ignore`" ) |
141 | if ( $c->config->{static}->{debug} ); |
142 | next DIR_CHECK; |
143 | } |
144 | } |
145 | |
146 | # do we need to ignore based on extension? |
147 | for my $ignore_ext |
148 | ( @{ $c->config->{static}->{ignore_extensions} } ) { |
149 | if ( $path =~ /.*\.${ignore_ext}$/ixms ) { |
150 | $c->_debug_msg( "Ignoring extension `$ignore_ext`" ) |
151 | if ( $c->config->{static}->{debug} ); |
152 | next DIR_CHECK; |
153 | } |
154 | } |
155 | |
156 | $c->_debug_msg( 'Serving ' . $dir . '/' . $path ) |
157 | if ( $c->config->{static}->{debug} ); |
158 | return $c->_static_file( $dir . '/' . $path ); |
159 | } |
160 | } |
161 | } |
162 | |
163 | return; |
164 | } |
165 | |
166 | sub _serve_static { |
167 | my $c = shift; |
168 | |
169 | my $path = $c->req->path; |
170 | my $type = $c->_ext_to_type; |
171 | |
172 | my $full_path = $c->_static_file; |
173 | my $stat = stat $full_path; |
174 | |
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175 | $c->res->headers->content_type( $type ); |
176 | $c->res->headers->content_length( $stat->size ); |
177 | $c->res->headers->last_modified( $stat->mtime ); |
178 | |
179 | if ( Catalyst->VERSION le '5.33' ) { |
180 | # old File::Slurp method |
181 | my $content = File::Slurp::read_file( $full_path ); |
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182 | $c->res->body( $content ); |
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183 | } |
184 | else { |
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185 | # new method, pass an IO::File object to body |
186 | my $fh = IO::File->new( $full_path, 'r' ); |
187 | if ( defined $fh ) { |
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188 | binmode $fh; |
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189 | $c->res->body( $fh ); |
190 | } |
191 | else { |
192 | Catalyst::Exception->throw( |
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193 | message => "Unable to open $full_path for reading" ); |
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194 | } |
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195 | } |
196 | |
197 | return 1; |
198 | } |
199 | |
200 | # looks up the correct MIME type for the current file extension |
201 | sub _ext_to_type { |
202 | my $c = shift; |
203 | my $path = $c->req->path; |
204 | |
205 | if ( $path =~ /.*\.(\S{1,})$/xms ) { |
206 | my $ext = $1; |
207 | my $user_types = $c->config->{static}->{mime_types}; |
208 | my $type = $user_types->{$ext} |
209 | || $c->_static_mime_types->mimeTypeOf( $ext ); |
210 | if ( $type ) { |
211 | $c->_debug_msg( "as $type" ) |
212 | if ( $c->config->{static}->{debug} ); |
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213 | return ( ref $type ) ? $type->type : $type; |
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214 | } |
215 | else { |
216 | $c->_debug_msg( "as text/plain (unknown extension $ext)" ) |
217 | if ( $c->config->{static}->{debug} ); |
218 | return 'text/plain'; |
219 | } |
220 | } |
221 | else { |
222 | $c->_debug_msg( 'as text/plain (no extension)' ) |
223 | if ( $c->config->{static}->{debug} ); |
224 | return 'text/plain'; |
225 | } |
226 | } |
227 | |
228 | sub _debug_msg { |
229 | my ( $c, $msg ) = @_; |
230 | |
231 | if ( !defined $c->_static_debug_message ) { |
232 | $c->_static_debug_message( [] ); |
233 | } |
234 | |
235 | if ( $msg ) { |
236 | push @{ $c->_static_debug_message }, $msg; |
237 | } |
238 | |
239 | return $c->_static_debug_message; |
240 | } |
241 | |
242 | 1; |
243 | __END__ |
244 | |
245 | =head1 NAME |
246 | |
247 | Catalyst::Plugin::Static::Simple - Make serving static pages painless. |
248 | |
249 | =head1 SYNOPSIS |
250 | |
251 | use Catalyst; |
252 | MyApp->setup( qw/Static::Simple/ ); |
253 | |
254 | =head1 DESCRIPTION |
255 | |
256 | The Static::Simple plugin is designed to make serving static content in your |
257 | application during development quick and easy, without requiring a single |
258 | line of code from you. |
259 | |
260 | It will detect static files used in your application by looking for file |
261 | extensions in the URI. By default, you can simply load this plugin and it |
262 | will immediately begin serving your static files with the correct MIME type. |
263 | The light-weight MIME::Types module is used to map file extensions to |
264 | IANA-registered MIME types. |
265 | |
266 | Note that actions mapped to paths using periods (.) will still operate |
267 | properly. |
268 | |
269 | You may further tweak the operation by adding configuration options, described |
270 | below. |
271 | |
272 | =head1 ADVANCED CONFIGURATION |
273 | |
274 | Configuration is completely optional and is specified within |
275 | MyApp->config->{static}. If you use any of these options, the module will |
276 | probably feel less "simple" to you! |
277 | |
278 | =head2 Aborting request logging |
279 | |
280 | Since Catalyst 5.50, there has been added support for dropping logging for a |
281 | request. This is enabled by default for static files, as static requests tend |
282 | to clutter the log output. However, if you want logging of static requests, |
283 | you can enable it by setting MyApp->config->{static}->{no_logs} to 0. |
284 | |
285 | =head2 Forcing directories into static mode |
286 | |
287 | Define a list of top-level directories beneath your 'root' directory that |
288 | should always be served in static mode. Regular expressions may be |
289 | specified using qr//. |
290 | |
291 | MyApp->config->{static}->{dirs} = [ |
292 | 'static', |
293 | qr/^(images|css)/, |
294 | ]; |
295 | |
296 | =head2 Including additional directories |
297 | |
298 | You may specify a list of directories in which to search for your static |
299 | files. The directories will be searched in order and will return the first |
300 | file found. Note that your root directory is B<not> automatically added to |
301 | the search path when you specify an include_path. You should use |
302 | MyApp->config->{root} to add it. |
303 | |
304 | MyApp->config->{static}->{include_path} = [ |
305 | '/path/to/overlay', |
306 | \&incpath_generator, |
307 | MyApp->config->{root} |
308 | ]; |
309 | |
310 | With the above setting, a request for the file /images/logo.jpg will search |
311 | for the following files, returning the first one found: |
312 | |
313 | /path/to/overlay/images/logo.jpg |
314 | /dynamic/path/images/logo.jpg |
315 | /your/app/home/root/images/logo.jpg |
316 | |
317 | The include path can contain a subroutine reference to dynamically return a |
318 | list of available directories. This method will receive the $c object as a |
319 | parameter and should return a reference to a list of directories. Errors can |
320 | be reported using die(). This method will be called every time a file is |
321 | requested that appears to be a static file (i.e. it has an extension). |
322 | |
323 | For example: |
324 | |
325 | sub incpath_generator { |
326 | my $c = shift; |
327 | |
328 | if ( $c->session->{customer_dir} ) { |
329 | return [ $c->session->{customer_dir} ]; |
330 | } else { |
331 | die "No customer dir defined."; |
332 | } |
333 | } |
334 | |
335 | =head2 Ignoring certain types of files |
336 | |
337 | There are some file types you may not wish to serve as static files. Most |
338 | important in this category are your raw template files. By default, files |
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339 | with the extensions tmpl, tt, tt2, html, and xhtml will be ignored by |
340 | Static::Simple in the interest of security. If you wish to define your own |
341 | extensions to ignore, use the ignore_extensions option: |
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342 | |
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343 | MyApp->config->{static}->{ignore_extensions} |
344 | = [ qw/tmpl tt tt2 html xhtml/ ]; |
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345 | |
346 | =head2 Ignoring entire directories |
347 | |
348 | To prevent an entire directory from being served statically, you can use the |
349 | ignore_dirs option. This option contains a list of relative directory paths |
350 | to ignore. If using include_path, the path will be checked against every |
351 | included path. |
352 | |
353 | MyApp->config->{static}->{ignore_dirs} = [ qw/tmpl css/ ]; |
354 | |
355 | For example, if combined with the above include_path setting, this |
356 | ignore_dirs value will ignore the following directories if they exist: |
357 | |
358 | /path/to/overlay/tmpl |
359 | /path/to/overlay/css |
360 | /dynamic/path/tmpl |
361 | /dynamic/path/css |
362 | /your/app/home/root/tmpl |
363 | /your/app/home/root/css |
364 | |
365 | =head2 Custom MIME types |
366 | |
367 | To override or add to the default MIME types set by the MIME::Types module, |
368 | you may enter your own extension to MIME type mapping. |
369 | |
370 | MyApp->config->{static}->{mime_types} = { |
371 | jpg => 'image/jpg', |
372 | png => 'image/png', |
373 | }; |
374 | |
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375 | =head2 Compatibility with other plugins |
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376 | |
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377 | Since version 0.12, Static::Simple plays nice with other plugins. It no |
378 | longer short-circuits the prepare_action stage as it was causing too many |
379 | compatibility issues with other plugins. |
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380 | |
381 | =head2 Debugging information |
382 | |
383 | Enable additional debugging information printed in the Catalyst log. This |
384 | is automatically enabled when running Catalyst in -Debug mode. |
385 | |
386 | MyApp->config->{static}->{debug} = 1; |
387 | |
388 | =head1 USING WITH APACHE |
389 | |
390 | While Static::Simple will work just fine serving files through Catalyst in |
391 | mod_perl, for increased performance, you may wish to have Apache handle the |
392 | serving of your static files. To do this, simply use a dedicated directory |
393 | for your static files and configure an Apache Location block for that |
394 | directory. This approach is recommended for production installations. |
395 | |
396 | <Location /static> |
397 | SetHandler default-handler |
398 | </Location> |
399 | |
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400 | =head1 INTERNAL EXTENDED METHODS |
401 | |
402 | Static::Simple extends the following steps in the Catalyst process. |
403 | |
404 | =head2 prepare_action |
405 | |
406 | prepare_action is used to first check if the request path is a static file. |
407 | If so, we skip all other prepare_action steps to improve performance. |
408 | |
409 | =head2 dispatch |
410 | |
411 | dispatch takes the file found during prepare_action and writes it to the |
412 | output. |
413 | |
414 | =head2 finalize |
415 | |
416 | finalize serves up final header information and displays any log messages. |
417 | |
418 | =head2 setup |
419 | |
420 | setup initializes all default values. |
421 | |
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422 | =head1 SEE ALSO |
423 | |
424 | L<Catalyst>, L<Catalyst::Plugin::Static>, |
425 | L<http://www.iana.org/assignments/media-types/> |
426 | |
427 | =head1 AUTHOR |
428 | |
429 | Andy Grundman, <andy@hybridized.org> |
430 | |
431 | =head1 CONTRIBUTORS |
432 | |
433 | Marcus Ramberg, <mramberg@cpan.org> |
434 | |
435 | =head1 THANKS |
436 | |
437 | The authors of Catalyst::Plugin::Static: |
438 | |
439 | Sebastian Riedel |
440 | Christian Hansen |
441 | Marcus Ramberg |
442 | |
443 | For the include_path code from Template Toolkit: |
444 | |
445 | Andy Wardley |
446 | |
447 | =head1 COPYRIGHT |
448 | |
449 | This program is free software, you can redistribute it and/or modify it under |
450 | the same terms as Perl itself. |
451 | |
452 | =cut |