Commit | Line | Data |
ca61af20 |
1 | package Catalyst::Engine::HTTP; |
45374ac6 |
2 | |
7fa2c9c1 |
3 | use Moose; |
4 | extends 'Catalyst::Engine::CGI'; |
0fc2d522 |
5 | |
4bb8bd62 |
6 | use Data::Dump qw(dump); |
fbcc39ad |
7 | use Errno 'EWOULDBLOCK'; |
055ff026 |
8 | use HTTP::Date (); |
06744540 |
9 | use HTTP::Headers; |
fbcc39ad |
10 | use HTTP::Status; |
fbcc39ad |
11 | use Socket; |
6c7a1d2f |
12 | use IO::Socket::INET (); |
b5ecfcf0 |
13 | use IO::Select (); |
45374ac6 |
14 | |
71fd2e0f |
15 | # For PAR |
16 | require Catalyst::Engine::HTTP::Restarter; |
17 | require Catalyst::Engine::HTTP::Restarter::Watcher; |
18 | |
333123ef |
19 | use constant CHUNKSIZE => 64 * 1024; |
20 | use constant DEBUG => $ENV{CATALYST_HTTP_DEBUG} || 0; |
4bb8bd62 |
21 | |
45374ac6 |
22 | =head1 NAME |
23 | |
ca61af20 |
24 | Catalyst::Engine::HTTP - Catalyst HTTP Engine |
45374ac6 |
25 | |
26 | =head1 SYNOPSIS |
27 | |
ca61af20 |
28 | A script using the Catalyst::Engine::HTTP module might look like: |
45374ac6 |
29 | |
30 | #!/usr/bin/perl -w |
31 | |
ca61af20 |
32 | BEGIN { $ENV{CATALYST_ENGINE} = 'HTTP' } |
45374ac6 |
33 | |
34 | use strict; |
35 | use lib '/path/to/MyApp/lib'; |
36 | use MyApp; |
37 | |
38 | MyApp->run; |
39 | |
40 | =head1 DESCRIPTION |
41 | |
42 | This is the Catalyst engine specialized for development and testing. |
43 | |
fbcc39ad |
44 | =head1 METHODS |
45 | |
b5ecfcf0 |
46 | =head2 $self->finalize_headers($c) |
fbcc39ad |
47 | |
48 | =cut |
49 | |
50 | sub finalize_headers { |
51 | my ( $self, $c ) = @_; |
52 | my $protocol = $c->request->protocol; |
53 | my $status = $c->response->status; |
54 | my $message = status_message($status); |
7fa2c9c1 |
55 | my $res_headers = $c->response->headers; |
56 | |
06744540 |
57 | my @headers; |
58 | push @headers, "$protocol $status $message"; |
7fa2c9c1 |
59 | |
60 | $res_headers->header( Date => HTTP::Date::time2str(time) ); |
61 | $res_headers->header( Status => $status ); |
62 | |
7f3c5736 |
63 | # Should we keep the connection open? |
64 | my $connection = $c->request->header('Connection'); |
ac5c933b |
65 | if ( $self->{options}->{keepalive} |
66 | && $connection |
7f3c5736 |
67 | && $connection =~ /^keep-alive$/i |
68 | ) { |
7fa2c9c1 |
69 | $res_headers->header( Connection => 'keep-alive' ); |
7f3c5736 |
70 | $self->{_keepalive} = 1; |
71 | } |
72 | else { |
7fa2c9c1 |
73 | $res_headers->header( Connection => 'close' ); |
7f3c5736 |
74 | } |
7fa2c9c1 |
75 | |
76 | push @headers, $res_headers->as_string("\x0D\x0A"); |
77 | |
06744540 |
78 | # Buffer the headers so they are sent with the first write() call |
79 | # This reduces the number of TCP packets we are sending |
80 | $self->{_header_buf} = join("\x0D\x0A", @headers, ''); |
fbcc39ad |
81 | } |
82 | |
b5ecfcf0 |
83 | =head2 $self->finalize_read($c) |
fbcc39ad |
84 | |
85 | =cut |
86 | |
1c6a35b1 |
87 | before finalize_read => sub { |
fbcc39ad |
88 | # Never ever remove this, it would result in random length output |
89 | # streams if STDIN eq STDOUT (like in the HTTP engine) |
4f5ebacd |
90 | *STDIN->blocking(1); |
4090e3bb |
91 | }; |
fbcc39ad |
92 | |
b5ecfcf0 |
93 | =head2 $self->prepare_read($c) |
fbcc39ad |
94 | |
95 | =cut |
96 | |
1c6a35b1 |
97 | before prepare_read => sub { |
fbcc39ad |
98 | # Set the input handle to non-blocking |
4f5ebacd |
99 | *STDIN->blocking(0); |
4090e3bb |
100 | }; |
fbcc39ad |
101 | |
b5ecfcf0 |
102 | =head2 $self->read_chunk($c, $buffer, $length) |
fbcc39ad |
103 | |
104 | =cut |
105 | |
106 | sub read_chunk { |
107 | my $self = shift; |
108 | my $c = shift; |
ac5c933b |
109 | |
4bb8bd62 |
110 | # If we have any remaining data in the input buffer, send it back first |
111 | if ( $_[0] = delete $self->{inputbuf} ) { |
112 | my $read = length( $_[0] ); |
113 | DEBUG && warn "read_chunk: Read $read bytes from previous input buffer\n"; |
114 | return $read; |
115 | } |
fbcc39ad |
116 | |
117 | # support for non-blocking IO |
4f5ebacd |
118 | my $rin = ''; |
119 | vec( $rin, *STDIN->fileno, 1 ) = 1; |
fbcc39ad |
120 | |
121 | READ: |
122 | { |
123 | select( $rin, undef, undef, undef ); |
4f5ebacd |
124 | my $rc = *STDIN->sysread(@_); |
fbcc39ad |
125 | if ( defined $rc ) { |
4bb8bd62 |
126 | DEBUG && warn "read_chunk: Read $rc bytes from socket\n"; |
fbcc39ad |
127 | return $rc; |
128 | } |
129 | else { |
130 | next READ if $! == EWOULDBLOCK; |
131 | return; |
132 | } |
133 | } |
134 | } |
135 | |
00c99324 |
136 | =head2 $self->write($c, $buffer) |
137 | |
e512dd24 |
138 | Writes the buffer to the client. |
00c99324 |
139 | |
140 | =cut |
141 | |
4090e3bb |
142 | around write => sub { |
143 | my $orig = shift; |
4bb8bd62 |
144 | my ( $self, $c, $buffer ) = @_; |
7fa2c9c1 |
145 | |
85d9fce6 |
146 | # Avoid 'print() on closed filehandle Remote' warnings when using IE |
147 | return unless *STDOUT->opened(); |
148 | |
85d9fce6 |
149 | # Prepend the headers if they have not yet been sent |
150 | if ( my $headers = delete $self->{_header_buf} ) { |
e512dd24 |
151 | $buffer = $headers . $buffer; |
4bb8bd62 |
152 | } |
7fa2c9c1 |
153 | |
4090e3bb |
154 | my $ret = $self->$orig($c, $buffer); |
7fa2c9c1 |
155 | |
e512dd24 |
156 | if ( !defined $ret ) { |
4bb8bd62 |
157 | $self->{_write_error} = $!; |
e2b0ddd3 |
158 | DEBUG && warn "write: Failed to write response ($!)\n"; |
4bb8bd62 |
159 | } |
9f3ebd8a |
160 | else { |
161 | DEBUG && warn "write: Wrote response ($ret bytes)\n"; |
162 | } |
0fc2d522 |
163 | |
4bb8bd62 |
164 | return $ret; |
4090e3bb |
165 | }; |
00c99324 |
166 | |
b5ecfcf0 |
167 | =head2 run |
fbcc39ad |
168 | |
169 | =cut |
170 | |
171 | # A very very simple HTTP server that initializes a CGI environment |
172 | sub run { |
37553dc8 |
173 | my ( $self, $class, $port, $host, $options ) = @_; |
fbcc39ad |
174 | |
4eeca0f2 |
175 | $options ||= {}; |
ac5c933b |
176 | |
3bcb3aae |
177 | $self->{options} = $options; |
1cf1c56a |
178 | |
e1576f62 |
179 | if ($options->{background}) { |
180 | my $child = fork; |
181 | die "Can't fork: $!" unless defined($child); |
44c6d25a |
182 | return $child if $child; |
e1576f62 |
183 | } |
184 | |
57a87bb3 |
185 | my $restart = 0; |
6a5aa41c |
186 | local $SIG{CHLD} = 'IGNORE'; |
fbcc39ad |
187 | |
1cf1c56a |
188 | my $allowed = $options->{allowed} || { '127.0.0.1' => '255.255.255.255' }; |
6c7a1d2f |
189 | my $addr = $host ? inet_aton($host) : INADDR_ANY; |
190 | if ( $addr eq INADDR_ANY ) { |
fbcc39ad |
191 | require Sys::Hostname; |
6c7a1d2f |
192 | $host = lc Sys::Hostname::hostname(); |
fbcc39ad |
193 | } |
194 | else { |
6c7a1d2f |
195 | $host = gethostbyaddr( $addr, AF_INET ) || inet_ntoa($addr); |
fbcc39ad |
196 | } |
6c7a1d2f |
197 | |
198 | # Handle requests |
199 | |
200 | # Setup socket |
201 | my $daemon = IO::Socket::INET->new( |
202 | Listen => SOMAXCONN, |
203 | LocalAddr => inet_ntoa($addr), |
204 | LocalPort => $port, |
205 | Proto => 'tcp', |
206 | ReuseAddr => 1, |
207 | Type => SOCK_STREAM, |
208 | ) |
209 | or die "Couldn't create daemon: $!"; |
210 | |
211 | my $url = "http://$host"; |
212 | $url .= ":$port" unless $port == 80; |
213 | |
fbcc39ad |
214 | print "You can connect to your server at $url\n"; |
fbcc39ad |
215 | |
e1576f62 |
216 | if ($options->{background}) { |
217 | open STDIN, "+</dev/null" or die $!; |
218 | open STDOUT, ">&STDIN" or die $!; |
219 | open STDERR, ">&STDIN" or die $!; |
220 | if ( $^O !~ /MSWin32/ ) { |
221 | require POSIX; |
222 | POSIX::setsid() |
223 | or die "Can't start a new session: $!"; |
224 | } |
225 | } |
226 | |
227 | if (my $pidfile = $options->{pidfile}) { |
228 | if (! open PIDFILE, "> $pidfile") { |
229 | warn("Cannot open: $pidfile: $!"); |
230 | } |
231 | print PIDFILE "$$\n"; |
232 | close PIDFILE; |
233 | } |
234 | |
4bb8bd62 |
235 | my $pid = undef; |
7fa2c9c1 |
236 | |
4bb8bd62 |
237 | # Ignore broken pipes as an HTTP server should |
238 | local $SIG{PIPE} = 'IGNORE'; |
7fa2c9c1 |
239 | |
b095458a |
240 | # Restart on HUP |
7fa2c9c1 |
241 | local $SIG{HUP} = sub { |
b095458a |
242 | $restart = 1; |
243 | warn "Restarting server on SIGHUP...\n"; |
244 | }; |
7fa2c9c1 |
245 | |
4bb8bd62 |
246 | LISTEN: |
247 | while ( !$restart ) { |
7fa2c9c1 |
248 | while ( accept( Remote, $daemon ) ) { |
4bb8bd62 |
249 | DEBUG && warn "New connection\n"; |
fbcc39ad |
250 | |
4bb8bd62 |
251 | select Remote; |
fbcc39ad |
252 | |
4bb8bd62 |
253 | Remote->blocking(1); |
7fa2c9c1 |
254 | |
7f3c5736 |
255 | # Read until we see all headers |
4bb8bd62 |
256 | $self->{inputbuf} = ''; |
7fa2c9c1 |
257 | |
7f3c5736 |
258 | if ( !$self->_read_headers ) { |
259 | # Error reading, give up |
059c085b |
260 | close Remote; |
7f3c5736 |
261 | next LISTEN; |
4bb8bd62 |
262 | } |
fbcc39ad |
263 | |
4bb8bd62 |
264 | my ( $method, $uri, $protocol ) = $self->_parse_request_line; |
7fa2c9c1 |
265 | |
4bb8bd62 |
266 | DEBUG && warn "Parsed request: $method $uri $protocol\n"; |
7fa2c9c1 |
267 | next unless $method; |
57a87bb3 |
268 | |
4bb8bd62 |
269 | unless ( uc($method) eq 'RESTART' ) { |
57a87bb3 |
270 | |
4bb8bd62 |
271 | # Fork |
7fa2c9c1 |
272 | if ( $options->{fork} ) { |
1b45d7e5 |
273 | if ( $pid = fork ) { |
274 | DEBUG && warn "Forked child $pid\n"; |
275 | next; |
276 | } |
277 | } |
6c7a1d2f |
278 | |
4bb8bd62 |
279 | $self->_handler( $class, $port, $method, $uri, $protocol ); |
ac5c933b |
280 | |
4bb8bd62 |
281 | if ( my $error = delete $self->{_write_error} ) { |
4bb8bd62 |
282 | close Remote; |
ac5c933b |
283 | |
1b45d7e5 |
284 | if ( !defined $pid ) { |
285 | next LISTEN; |
286 | } |
4bb8bd62 |
287 | } |
fbcc39ad |
288 | |
1b45d7e5 |
289 | if ( defined $pid ) { |
290 | # Child process, close connection and exit |
291 | DEBUG && warn "Child process exiting\n"; |
292 | $daemon->close; |
293 | exit; |
294 | } |
1cf1c56a |
295 | } |
4bb8bd62 |
296 | else { |
297 | my $sockdata = $self->_socket_data( \*Remote ); |
298 | my $ipaddr = _inet_addr( $sockdata->{peeraddr} ); |
299 | my $ready = 0; |
300 | foreach my $ip ( keys %$allowed ) { |
301 | my $mask = $allowed->{$ip}; |
302 | $ready = ( $ipaddr & _inet_addr($mask) ) == _inet_addr($ip); |
303 | last if $ready; |
304 | } |
305 | if ($ready) { |
306 | $restart = 1; |
307 | last; |
308 | } |
1cf1c56a |
309 | } |
4bb8bd62 |
310 | } |
311 | continue { |
312 | close Remote; |
313 | } |
fbcc39ad |
314 | } |
ac5c933b |
315 | |
6c7a1d2f |
316 | $daemon->close; |
ac5c933b |
317 | |
4bb8bd62 |
318 | DEBUG && warn "Shutting down\n"; |
37553dc8 |
319 | |
57a87bb3 |
320 | if ($restart) { |
60c38e3e |
321 | $SIG{CHLD} = 'DEFAULT'; |
6844bc1c |
322 | wait; |
e37e3977 |
323 | |
324 | ### if the standalone server was invoked with perl -I .. we will loose |
325 | ### those include dirs upon re-exec. So add them to PERL5LIB, so they |
326 | ### are available again for the exec'ed process --kane |
327 | use Config; |
ac5c933b |
328 | $ENV{PERL5LIB} .= join $Config{path_sep}, @INC; |
329 | |
ea52914e |
330 | exec $^X, $0, @{ $options->{argv} }; |
60c38e3e |
331 | } |
57a87bb3 |
332 | |
333 | exit; |
fbcc39ad |
334 | } |
335 | |
6c7a1d2f |
336 | sub _handler { |
337 | my ( $self, $class, $port, $method, $uri, $protocol ) = @_; |
338 | |
6c7a1d2f |
339 | local *STDIN = \*Remote; |
340 | local *STDOUT = \*Remote; |
341 | |
342 | # We better be careful and just use 1.0 |
343 | $protocol = '1.0'; |
344 | |
345 | my $sockdata = $self->_socket_data( \*Remote ); |
346 | my %copy_of_env = %ENV; |
347 | |
348 | my $sel = IO::Select->new; |
349 | $sel->add( \*STDIN ); |
ac5c933b |
350 | |
3bcb3aae |
351 | REQUEST: |
683762ca |
352 | while (1) { |
353 | my ( $path, $query_string ) = split /\?/, $uri, 2; |
ac5c933b |
354 | |
7f3c5736 |
355 | # Initialize CGI environment |
356 | local %ENV = ( |
357 | PATH_INFO => $path || '', |
358 | QUERY_STRING => $query_string || '', |
359 | REMOTE_ADDR => $sockdata->{peeraddr}, |
360 | REMOTE_HOST => $sockdata->{peername}, |
361 | REQUEST_METHOD => $method || '', |
362 | SERVER_NAME => $sockdata->{localname}, |
363 | SERVER_PORT => $port, |
364 | SERVER_PROTOCOL => "HTTP/$protocol", |
365 | %copy_of_env, |
366 | ); |
cf26c39c |
367 | |
7f3c5736 |
368 | # Parse headers |
369 | if ( $protocol >= 1 ) { |
370 | $self->_parse_headers; |
371 | } |
6c7a1d2f |
372 | |
7f3c5736 |
373 | # Pass flow control to Catalyst |
374 | $class->handle_request; |
ac5c933b |
375 | |
7f3c5736 |
376 | DEBUG && warn "Request done\n"; |
ac5c933b |
377 | |
7f3c5736 |
378 | # Allow keepalive requests, this is a hack but we'll support it until |
379 | # the next major release. |
380 | if ( delete $self->{_keepalive} ) { |
ac5c933b |
381 | |
7f3c5736 |
382 | DEBUG && warn "Reusing previous connection for keep-alive request\n"; |
ac5c933b |
383 | |
384 | if ( $sel->can_read(1) ) { |
7f3c5736 |
385 | if ( !$self->_read_headers ) { |
386 | # Error reading, give up |
387 | last REQUEST; |
388 | } |
389 | |
390 | ( $method, $uri, $protocol ) = $self->_parse_request_line; |
ac5c933b |
391 | |
7f3c5736 |
392 | DEBUG && warn "Parsed request: $method $uri $protocol\n"; |
ac5c933b |
393 | |
7f3c5736 |
394 | # Force HTTP/1.0 |
395 | $protocol = '1.0'; |
ac5c933b |
396 | |
7f3c5736 |
397 | next REQUEST; |
398 | } |
ac5c933b |
399 | |
7f3c5736 |
400 | DEBUG && warn "No keep-alive request within 1 second\n"; |
401 | } |
ac5c933b |
402 | |
7f3c5736 |
403 | last REQUEST; |
404 | } |
ac5c933b |
405 | |
7f3c5736 |
406 | DEBUG && warn "Closing connection\n"; |
06744540 |
407 | |
408 | close Remote; |
3bcb3aae |
409 | } |
410 | |
7f3c5736 |
411 | sub _read_headers { |
412 | my $self = shift; |
7fa2c9c1 |
413 | |
7f3c5736 |
414 | while (1) { |
415 | my $read = sysread Remote, my $buf, CHUNKSIZE; |
7fa2c9c1 |
416 | |
059c085b |
417 | if ( !defined $read ) { |
418 | next if $! == EWOULDBLOCK; |
419 | DEBUG && warn "Error reading headers: $!\n"; |
420 | return; |
7fa2c9c1 |
421 | } elsif ( $read == 0 ) { |
059c085b |
422 | DEBUG && warn "EOF\n"; |
7f3c5736 |
423 | return; |
424 | } |
7fa2c9c1 |
425 | |
7f3c5736 |
426 | DEBUG && warn "Read $read bytes\n"; |
427 | $self->{inputbuf} .= $buf; |
428 | last if $self->{inputbuf} =~ /(\x0D\x0A?\x0D\x0A?|\x0A\x0D?\x0A\x0D?)/s; |
429 | } |
7fa2c9c1 |
430 | |
7f3c5736 |
431 | return 1; |
432 | } |
433 | |
4bb8bd62 |
434 | sub _parse_request_line { |
435 | my $self = shift; |
6c7a1d2f |
436 | |
7fa2c9c1 |
437 | # Parse request line |
4bb8bd62 |
438 | if ( $self->{inputbuf} !~ s/^(\w+)[ \t]+(\S+)(?:[ \t]+(HTTP\/\d+\.\d+))?[^\012]*\012// ) { |
439 | return (); |
440 | } |
7fa2c9c1 |
441 | |
4bb8bd62 |
442 | my $method = $1; |
443 | my $uri = $2; |
444 | my $proto = $3 || 'HTTP/0.9'; |
7fa2c9c1 |
445 | |
4bb8bd62 |
446 | return ( $method, $uri, $proto ); |
6c7a1d2f |
447 | } |
448 | |
4bb8bd62 |
449 | sub _parse_headers { |
450 | my $self = shift; |
7fa2c9c1 |
451 | |
4bb8bd62 |
452 | # Copy the buffer for header parsing, and remove the header block |
453 | # from the content buffer. |
454 | my $buf = $self->{inputbuf}; |
455 | $self->{inputbuf} =~ s/.*?(\x0D\x0A?\x0D\x0A?|\x0A\x0D?\x0A\x0D?)//s; |
7fa2c9c1 |
456 | |
4bb8bd62 |
457 | # Parse headers |
458 | my $headers = HTTP::Headers->new; |
459 | my ($key, $val); |
460 | HEADER: |
461 | while ( $buf =~ s/^([^\012]*)\012// ) { |
462 | $_ = $1; |
463 | s/\015$//; |
464 | if ( /^([\w\-~]+)\s*:\s*(.*)/ ) { |
465 | $headers->push_header( $key, $val ) if $key; |
466 | ($key, $val) = ($1, $2); |
467 | } |
468 | elsif ( /^\s+(.*)/ ) { |
469 | $val .= " $1"; |
470 | } |
471 | else { |
472 | last HEADER; |
473 | } |
474 | } |
475 | $headers->push_header( $key, $val ) if $key; |
ac5c933b |
476 | |
4bb8bd62 |
477 | DEBUG && warn "Parsed headers: " . dump($headers) . "\n"; |
6c7a1d2f |
478 | |
4bb8bd62 |
479 | # Convert headers into ENV vars |
480 | $headers->scan( sub { |
481 | my ( $key, $val ) = @_; |
ac5c933b |
482 | |
4bb8bd62 |
483 | $key = uc $key; |
484 | $key = 'COOKIE' if $key eq 'COOKIES'; |
485 | $key =~ tr/-/_/; |
486 | $key = 'HTTP_' . $key |
487 | unless $key =~ m/\A(?:CONTENT_(?:LENGTH|TYPE)|COOKIE)\z/; |
ac5c933b |
488 | |
4bb8bd62 |
489 | if ( exists $ENV{$key} ) { |
490 | $ENV{$key} .= ", $val"; |
491 | } |
492 | else { |
493 | $ENV{$key} = $val; |
494 | } |
495 | } ); |
6c7a1d2f |
496 | } |
497 | |
498 | sub _socket_data { |
499 | my ( $self, $handle ) = @_; |
500 | |
8b9d0298 |
501 | my $remote_sockaddr = getpeername($handle); |
ac5c933b |
502 | my ( undef, $iaddr ) = $remote_sockaddr |
503 | ? sockaddr_in($remote_sockaddr) |
3150d774 |
504 | : (undef, undef); |
ac5c933b |
505 | |
8b9d0298 |
506 | my $local_sockaddr = getsockname($handle); |
6c7a1d2f |
507 | my ( undef, $localiaddr ) = sockaddr_in($local_sockaddr); |
508 | |
8b9d0298 |
509 | # This mess is necessary to keep IE from crashing the server |
6c7a1d2f |
510 | my $data = { |
ac5c933b |
511 | peername => $iaddr |
8b9d0298 |
512 | ? ( gethostbyaddr( $iaddr, AF_INET ) || 'localhost' ) |
513 | : 'localhost', |
ac5c933b |
514 | peeraddr => $iaddr |
8b9d0298 |
515 | ? ( inet_ntoa($iaddr) || '127.0.0.1' ) |
516 | : '127.0.0.1', |
517 | localname => gethostbyaddr( $localiaddr, AF_INET ) || 'localhost', |
518 | localaddr => inet_ntoa($localiaddr) || '127.0.0.1', |
6c7a1d2f |
519 | }; |
520 | |
521 | return $data; |
522 | } |
523 | |
1cf1c56a |
524 | sub _inet_addr { unpack "N*", inet_aton( $_[0] ) } |
525 | |
4090e3bb |
526 | no Moose; |
527 | |
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528 | =head1 SEE ALSO |
529 | |
2f381252 |
530 | L<Catalyst>, L<Catalyst::Engine> |
fbcc39ad |
531 | |
532 | =head1 AUTHORS |
533 | |
2f381252 |
534 | Catalyst Contributors, see Catalyst.pm |
4bb8bd62 |
535 | |
fbcc39ad |
536 | =head1 THANKS |
45374ac6 |
537 | |
fbcc39ad |
538 | Many parts are ripped out of C<HTTP::Server::Simple> by Jesse Vincent. |
45374ac6 |
539 | |
540 | =head1 COPYRIGHT |
541 | |
542 | This program is free software, you can redistribute it and/or modify it under |
543 | the same terms as Perl itself. |
544 | |
545 | =cut |
546 | |
45374ac6 |
547 | 1; |