1 package Catalyst::Request;
3 use IO::Socket qw[AF_INET inet_aton];
16 use namespace::clean -except => 'meta';
18 with 'MooseX::Emulate::Class::Accessor::Fast';
20 has env => (is => 'ro', writer => '_set_env', predicate => '_has_env');
21 # XXX Deprecated crap here - warn?
22 has action => (is => 'rw');
23 # XXX: Deprecated in docs ages ago (2006), deprecated with warning in 5.8000 due
24 # to confusion between Engines and Plugin::Authentication. Remove in 5.8100?
25 has user => (is => 'rw');
26 sub snippets { shift->captures(@_) }
28 has _read_position => (
29 # FIXME: work around Moose bug RT#75367
32 writer => '_set_read_position',
36 # FIXME: work around Moose bug RT#75367
41 $self->header('Content-Length') || 0;
46 has address => (is => 'rw');
47 has arguments => (is => 'rw', default => sub { [] });
48 has cookies => (is => 'ro', builder => 'prepare_cookies', lazy => 1);
53 if ( my $header = $self->header('Cookie') ) {
54 return { CGI::Simple::Cookie->parse($header) };
59 has query_keywords => (is => 'rw');
60 has match => (is => 'rw');
61 has method => (is => 'rw');
62 has protocol => (is => 'rw');
63 has query_parameters => (is => 'rw', lazy=>1, default => sub { shift->_use_hash_multivalue ? Hash::MultiValue->new : +{} });
64 has secure => (is => 'rw', default => 0);
65 has captures => (is => 'rw', default => sub { [] });
66 has uri => (is => 'rw', predicate => 'has_uri');
67 has remote_user => (is => 'rw');
70 isa => 'HTTP::Headers',
71 handles => [qw(content_encoding content_length content_type header referer user_agent)],
72 builder => 'prepare_headers',
80 my $headers = HTTP::Headers->new();
82 for my $header (keys %{ $env }) {
83 next unless $header =~ /^(HTTP|CONTENT|COOKIE)/i;
84 (my $field = $header) =~ s/^HTTPS?_//;
86 $headers->header($field => $env->{$header});
99 predicate=>'_has_io_fh',
101 builder=>'_build_io_fh');
105 return $self->env->{'psgix.io'}
107 $self->env->{'net.async.http.server.req'} &&
108 $self->env->{'net.async.http.server.req'}->stream) ## Until I can make ioasync cabal see the value of supportin psgix.io (jnap)
109 || die "Your Server does not support psgix.io";
112 has data_handlers => ( is=>'ro', isa=>'HashRef', default=>sub { +{} } );
117 builder=>'_build_body_data');
119 sub _build_body_data {
121 my $content_type = $self->content_type;
122 my ($match) = grep { $content_type =~/$_/i }
123 keys(%{$self->data_handlers});
126 my $fh = $self->body;
128 return $self->data_handlers->{$match}->($fh, $self);
134 has _use_hash_multivalue => (
139 # Amount of data to read from input on each pass
140 our $CHUNKSIZE = 64 * 1024;
143 my ($self, $maxlength) = @_;
144 my $remaining = $self->_read_length - $self->_read_position;
145 $maxlength ||= $CHUNKSIZE;
147 # Are we done reading?
148 if ( $remaining <= 0 ) {
152 my $readlen = ( $remaining > $maxlength ) ? $maxlength : $remaining;
153 my $rc = $self->read_chunk( my $buffer, $readlen );
155 if (0 == $rc) { # Nothing more to read even though Content-Length
156 # said there should be.
159 $self->_set_read_position( $self->_read_position + $rc );
163 Catalyst::Exception->throw(
164 message => "Unknown error reading input: $!" );
170 return $self->env->{'psgi.input'}->read(@_);
173 has body_parameters => (
177 builder => 'prepare_body_parameters',
183 default => sub { {} },
189 builder => '_build_parameters',
190 clearer => '_clear_parameters',
194 # - Can we lose the before modifiers which just call prepare_body ?
195 # they are wasteful, slow us down and feel cluttery.
197 # Can we make _body an attribute, have the rest of
198 # these lazy build from there and kill all the direct hash access
199 # in Catalyst.pm and Engine.pm?
201 sub prepare_parameters {
203 $self->_clear_parameters;
204 return $self->parameters;
207 sub _build_parameters {
210 my $body_parameters = $self->body_parameters;
211 my $query_parameters = $self->query_parameters;
213 if($self->_use_hash_multivalue) {
214 return Hash::MultiValue->new($query_parameters->flatten, $body_parameters->flatten);
217 # We copy, no references
218 foreach my $name (keys %$query_parameters) {
219 my $param = $query_parameters->{$name};
220 $parameters->{$name} = ref $param eq 'ARRAY' ? [ @$param ] : $param;
223 # Merge query and body parameters
224 foreach my $name (keys %$body_parameters) {
225 my $param = $body_parameters->{$name};
226 my @values = ref $param eq 'ARRAY' ? @$param : ($param);
227 if ( my $existing = $parameters->{$name} ) {
228 unshift(@values, (ref $existing eq 'ARRAY' ? @$existing : $existing));
230 $parameters->{$name} = @values > 1 ? \@values : $values[0];
237 predicate => '_has_uploadtmp',
243 # If previously applied middleware created the HTTP::Body object, then we
246 if(my $plack_body = $self->_has_env ? $self->env->{'plack.request.http.body'} : undef) {
247 $self->_body($plack_body);
248 $self->_body->cleanup(1);
252 # If there is nothing to read, set body to naught and return. This
253 # will cause all body code to be skipped
255 return $self->_body(0) unless my $length = $self->_read_length;
257 # Unless the body has already been set, create it. Not sure about this
258 # code, how else might it be set, but this was existing logic.
260 unless ($self->_body) {
261 my $type = $self->header('Content-Type');
262 $self->_body(HTTP::Body->new( $type, $length ));
263 $self->_body->cleanup(1);
265 # JNAP: I'm not sure this is doing what we expect, but it also doesn't
266 # seem to be hurting (seems ->_has_uploadtmp is true more than I would
269 $self->_body->tmpdir( $self->_uploadtmp )
270 if $self->_has_uploadtmp;
273 # Ok if we get this far, we have to read psgi.input into the new body
274 # object. Lets play nice with any plack app or other downstream, so
275 # we create a buffer unless one exists.
278 if ($self->env->{'psgix.input.buffered'}) {
279 # Be paranoid about previous psgi middleware or apps that read the
280 # input but didn't return the buffer to the start.
281 $self->env->{'psgi.input'}->seek(0, 0);
283 $stream_buffer = Stream::Buffered->new($length);
286 # Check for definedness as you could read '0'
287 while ( defined ( my $chunk = $self->read() ) ) {
288 $self->prepare_body_chunk($chunk);
289 $stream_buffer->print($chunk) if $stream_buffer;
292 # Ok, we read the body. Lets play nice for any PSGI app down the pipe
294 if ($stream_buffer) {
295 $self->env->{'psgix.input.buffered'} = 1;
296 $self->env->{'psgi.input'} = $stream_buffer->rewind;
298 $self->env->{'psgi.input'}->seek(0, 0); # Reset the buffer for downstream middleware or apps
301 # paranoia against wrong Content-Length header
302 my $remaining = $length - $self->_read_position;
303 if ( $remaining > 0 ) {
304 Catalyst::Exception->throw("Wrong Content-Length value: $length" );
308 sub prepare_body_chunk {
309 my ( $self, $chunk ) = @_;
311 $self->_body->add($chunk);
314 sub prepare_body_parameters {
315 my ( $self, $c ) = @_;
317 $self->prepare_body if ! $self->_has_body;
319 unless($self->_body) {
320 return $self->_use_hash_multivalue ? Hash::MultiValue->new : {};
323 my $params = $self->_body->param;
325 # If we have an encoding configured (like UTF-8) in general we expect a client
326 # to POST with the encoding we fufilled the request in. Otherwise don't do any
327 # encoding (good change wide chars could be in HTML entity style llike the old
330 # so, now that HTTP::Body prepared the body params, we gotta 'walk' the structure
331 # and do any needed decoding.
333 # This only does something if the encoding is set via the encoding param. Remember
334 # this is assuming the client is not bad and responds with what you provided. In
335 # general you can just use utf8 and get away with it.
337 # I need to see if $c is here since this also doubles as a builder for the object :(
339 if($c and $c->encoding) {
340 $params = $c->_handle_unicode_decoding($params);
343 return $self->_use_hash_multivalue ?
344 Hash::MultiValue->from_mixed($params) :
348 sub prepare_connection {
351 my $env = $self->env;
353 $self->address( $env->{REMOTE_ADDR} );
354 $self->hostname( $env->{REMOTE_HOST} )
355 if exists $env->{REMOTE_HOST};
356 $self->protocol( $env->{SERVER_PROTOCOL} );
357 $self->remote_user( $env->{REMOTE_USER} );
358 $self->method( $env->{REQUEST_METHOD} );
359 $self->secure( $env->{'psgi.url_scheme'} eq 'https' ? 1 : 0 );
362 # XXX - FIXME - method is here now, move this crap...
363 around parameters => sub {
364 my ($orig, $self, $params) = @_;
366 if ( !ref $params ) {
368 "Attempt to retrieve '$params' with req->params(), " .
369 "you probably meant to call req->param('$params')"
373 return $self->$orig($params);
384 return $self->path if $self->has_uri;
389 is => 'rw', clearer => '_clear_body', predicate => '_has_body',
391 # Eugh, ugly. Should just be able to rename accessor methods to 'body'
392 # and provide a custom reader..
395 $self->prepare_body unless $self->_has_body;
396 croak 'body is a reader' if scalar @_;
397 return blessed $self->_body ? $self->_body->body : $self->_body;
406 gethostbyaddr( inet_aton( $self->address ), AF_INET ) || $self->address
410 has _path => ( is => 'rw', predicate => '_has_path', clearer => '_clear_path' );
412 sub args { shift->arguments(@_) }
413 sub body_params { shift->body_parameters(@_) }
414 sub input { shift->body(@_) }
415 sub params { shift->parameters(@_) }
416 sub query_params { shift->query_parameters(@_) }
417 sub path_info { shift->path(@_) }
419 =for stopwords param params
423 Catalyst::Request - provides information about the current client request
428 $req->address eq "127.0.0.1";
434 $req->body_parameters;
435 $req->content_encoding;
436 $req->content_length;
444 $req->query_keywords;
452 $req->query_parameters;
464 See also L<Catalyst>, L<Catalyst::Request::Upload>.
468 This is the Catalyst Request class, which provides an interface to data for the
469 current client request. The request object is prepared by L<Catalyst::Engine>,
470 thus hiding the details of the particular engine implementation.
476 Returns the IP address of the client.
478 =head2 $req->arguments
480 Returns a reference to an array containing the arguments.
482 print $c->request->arguments->[0];
484 For example, if your action was
486 package MyApp::Controller::Foo;
492 and the URI for the request was C<http://.../foo/moose/bah>, the string C<bah>
493 would be the first and only argument.
495 Arguments get automatically URI-unescaped for you.
499 Shortcut for L</arguments>.
503 Contains the URI base. This will always have a trailing slash. Note that the
504 URI scheme (e.g., http vs. https) must be determined through heuristics;
505 depending on your server configuration, it may be incorrect. See $req->secure
508 If your application was queried with the URI
509 C<http://localhost:3000/some/path> then C<base> is C<http://localhost:3000/>.
513 Returns the message body of the request, as returned by L<HTTP::Body>: a string,
514 unless Content-Type is C<application/x-www-form-urlencoded>, C<text/xml>, or
515 C<multipart/form-data>, in which case a L<File::Temp> object is returned.
517 =head2 $req->body_data
519 Returns a Perl representation of POST/PUT body data that is not classic HTML
520 form data, such as JSON, XML, etc. By default, Catalyst will parse incoming
521 data of the type 'application/json' and return access to that data via this
522 method. You may define addition data_handlers via a global configuration
523 setting. See L<Catalyst\DATA HANDLERS> for more information.
525 =head2 $req->body_parameters
527 Returns a reference to a hash containing body (POST) parameters. Values can
528 be either a scalar or an arrayref containing scalars.
530 print $c->request->body_parameters->{field};
531 print $c->request->body_parameters->{field}->[0];
533 These are the parameters from the POST part of the request, if any.
535 =head2 $req->body_params
537 Shortcut for body_parameters.
539 =head2 $req->content_encoding
541 Shortcut for $req->headers->content_encoding.
543 =head2 $req->content_length
545 Shortcut for $req->headers->content_length.
547 =head2 $req->content_type
549 Shortcut for $req->headers->content_type.
553 A convenient method to access $req->cookies.
555 $cookie = $c->request->cookie('name');
556 @cookies = $c->request->cookie;
564 return keys %{ $self->cookies };
571 unless ( exists $self->cookies->{$name} ) {
575 return $self->cookies->{$name};
581 Returns a reference to a hash containing the cookies.
583 print $c->request->cookies->{mycookie}->value;
585 The cookies in the hash are indexed by name, and the values are L<CGI::Simple::Cookie>
590 Shortcut for $req->headers->header.
594 Returns an L<HTTP::Headers> object containing the headers for the current request.
596 print $c->request->headers->header('X-Catalyst');
598 =head2 $req->hostname
600 Returns the hostname of the client. Use C<< $req->uri->host >> to get the hostname of the server.
604 Alias for $req->body.
606 =head2 $req->query_keywords
608 Contains the keywords portion of a query string, when no '=' signs are
611 http://localhost/path?some+keywords
613 $c->request->query_keywords will contain 'some keywords'
617 This contains the matching part of a Regex action. Otherwise
618 it returns the same as 'action', except for default actions,
619 which return an empty string.
623 Contains the request method (C<GET>, C<POST>, C<HEAD>, etc).
627 Returns GET and POST parameters with a CGI.pm-compatible param method. This
628 is an alternative method for accessing parameters in $c->req->parameters.
630 $value = $c->request->param( 'foo' );
631 @values = $c->request->param( 'foo' );
632 @params = $c->request->param;
634 Like L<CGI>, and B<unlike> earlier versions of Catalyst, passing multiple
635 arguments to this method, like this:
637 $c->request->param( 'foo', 'bar', 'gorch', 'quxx' );
639 will set the parameter C<foo> to the multiple values C<bar>, C<gorch> and
640 C<quxx>. Previously this would have added C<bar> as another value to C<foo>
641 (creating it if it didn't exist before), and C<quxx> as another value for
644 B<NOTE> this is considered a legacy interface and care should be taken when
645 using it. C<< scalar $c->req->param( 'foo' ) >> will return only the first
646 C<foo> param even if multiple are present; C<< $c->req->param( 'foo' ) >> will
647 return a list of as many are present, which can have unexpected consequences
648 when writing code of the form:
652 baz => $c->req->param( 'baz' ),
655 If multiple C<baz> parameters are provided this code might corrupt data or
656 cause a hash initialization error. For a more straightforward interface see
657 C<< $c->req->parameters >>.
665 return keys %{ $self->parameters };
668 # If anything in @_ is undef, carp about that, and remove it from
671 my @params = grep { defined($_) ? 1 : do {carp "You called ->params with an undefined value"; 0} } @_;
673 if ( @params == 1 ) {
675 defined(my $param = shift @params) ||
676 carp "You called ->params with an undefined value 2";
678 unless ( exists $self->parameters->{$param} ) {
679 return wantarray ? () : undef;
682 if ( ref $self->parameters->{$param} eq 'ARRAY' ) {
684 ? @{ $self->parameters->{$param} }
685 : $self->parameters->{$param}->[0];
689 ? ( $self->parameters->{$param} )
690 : $self->parameters->{$param};
693 elsif ( @params > 1 ) {
694 my $field = shift @params;
695 $self->parameters->{$field} = [@params];
699 =head2 $req->parameters
701 Returns a reference to a hash containing GET and POST parameters. Values can
702 be either a scalar or an arrayref containing scalars.
704 print $c->request->parameters->{field};
705 print $c->request->parameters->{field}->[0];
707 This is the combination of C<query_parameters> and C<body_parameters>.
711 Shortcut for $req->parameters.
715 Returns the path, i.e. the part of the URI after $req->base, for the current request.
717 http://localhost/path/foo
719 $c->request->path will contain 'path/foo'
721 =head2 $req->path_info
723 Alias for path, added for compatibility with L<CGI>.
728 my ( $self, @params ) = @_;
731 $self->uri->path(@params);
734 elsif ( $self->_has_path ) {
738 my $path = $self->uri->path;
739 my $location = $self->base->path;
740 $path =~ s/^(\Q$location\E)?//;
748 =head2 $req->protocol
750 Returns the protocol (HTTP/1.0 or HTTP/1.1) used for the current request.
752 =head2 $req->query_parameters
754 =head2 $req->query_params
756 Returns a reference to a hash containing query string (GET) parameters. Values can
757 be either a scalar or an arrayref containing scalars.
759 print $c->request->query_parameters->{field};
760 print $c->request->query_parameters->{field}->[0];
762 =head2 $req->read( [$maxlength] )
764 Reads a chunk of data from the request body. This method is intended to be
765 used in a while loop, reading $maxlength bytes on every call. $maxlength
766 defaults to the size of the request if not specified.
768 =head2 $req->read_chunk(\$buff, $max)
772 You have to set MyApp->config(parse_on_demand => 1) to use this directly.
776 Shortcut for $req->headers->referer. Returns the referring page.
780 Returns true or false, indicating whether the connection is secure
781 (https). The reliability of $req->secure may depend on your server
782 configuration; Catalyst relies on PSGI to determine whether or not a
783 request is secure (Catalyst looks at psgi.url_scheme), and different
784 PSGI servers may make this determination in different ways (as by
785 directly passing along information from the server, interpreting any of
786 several HTTP headers, or using heuristics of their own).
788 =head2 $req->captures
790 Returns a reference to an array containing captured args from chained
791 actions or regex captures.
793 my @captures = @{ $c->request->captures };
797 A convenient method to access $req->uploads.
799 $upload = $c->request->upload('field');
800 @uploads = $c->request->upload('field');
801 @fields = $c->request->upload;
803 for my $upload ( $c->request->upload('field') ) {
804 print $upload->filename;
813 return keys %{ $self->uploads };
820 unless ( exists $self->uploads->{$upload} ) {
821 return wantarray ? () : undef;
824 if ( ref $self->uploads->{$upload} eq 'ARRAY' ) {
826 ? @{ $self->uploads->{$upload} }
827 : $self->uploads->{$upload}->[0];
831 ? ( $self->uploads->{$upload} )
832 : $self->uploads->{$upload};
838 while ( my ( $field, $upload ) = splice( @_, 0, 2 ) ) {
840 if ( exists $self->uploads->{$field} ) {
841 for ( $self->uploads->{$field} ) {
842 $_ = [$_] unless ref($_) eq "ARRAY";
843 push( @$_, $upload );
847 $self->uploads->{$field} = $upload;
855 Returns a reference to a hash containing uploads. Values can be either a
856 L<Catalyst::Request::Upload> object, or an arrayref of
857 L<Catalyst::Request::Upload> objects.
859 my $upload = $c->request->uploads->{field};
860 my $upload = $c->request->uploads->{field}->[0];
864 Returns a L<URI> object for the current request. Stringifies to the URI text.
866 =head2 $req->mangle_params( { key => 'value' }, $appendmode);
868 Returns a hashref of parameters stemming from the current request's params,
869 plus the ones supplied. Keys for which no current param exists will be
870 added, keys with undefined values will be removed and keys with existing
871 params will be replaced. Note that you can supply a true value as the final
872 argument to change behavior with regards to existing parameters, appending
873 values rather than replacing them.
877 # URI query params foo=1
878 my $hashref = $req->mangle_params({ foo => 2 });
879 # Result is query params of foo=2
883 # URI query params foo=1
884 my $hashref = $req->mangle_params({ foo => 2 }, 1);
885 # Result is query params of foo=1&foo=2
887 This is the code behind C<uri_with>.
892 my ($self, $args, $append) = @_;
894 carp('No arguments passed to mangle_params()') unless $args;
896 foreach my $value ( values %$args ) {
897 next unless defined $value;
898 for ( ref $value eq 'ARRAY' ? @$value : $value ) {
904 my %params = %{ $self->uri->query_form_hash };
905 foreach my $key (keys %{ $args }) {
906 my $val = $args->{$key};
909 if($append && exists($params{$key})) {
911 # This little bit of heaven handles appending a new value onto
912 # an existing one regardless if the existing value is an array
913 # or not, and regardless if the new value is an array or not
915 ref($params{$key}) eq 'ARRAY' ? @{ $params{$key} } : $params{$key},
916 ref($val) eq 'ARRAY' ? @{ $val } : $val
920 $params{$key} = $val;
924 # If the param wasn't defined then we delete it.
925 delete($params{$key});
933 =head2 $req->uri_with( { key => 'value' } );
935 Returns a rewritten URI object for the current request. Key/value pairs
936 passed in will override existing parameters. You can remove an existing
937 parameter by passing in an undef value. Unmodified pairs will be
940 You may also pass an optional second parameter that puts C<uri_with> into
943 $req->uri_with( { key => 'value' }, { mode => 'append' } );
945 See C<mangle_params> for an explanation of this behavior.
950 my( $self, $args, $behavior) = @_;
952 carp( 'No arguments passed to uri_with()' ) unless $args;
955 if((ref($behavior) eq 'HASH') && defined($behavior->{mode}) && ($behavior->{mode} eq 'append')) {
959 my $params = $self->mangle_params($args, $append);
961 my $uri = $self->uri->clone;
962 $uri->query_form($params);
967 =head2 $req->remote_user
969 Returns the value of the C<REMOTE_USER> environment variable.
971 =head2 $req->user_agent
973 Shortcut to $req->headers->user_agent. Returns the user agent (browser)
978 Returns a psgix.io bidirectional socket, if your server supports one. Used for
979 when you want to jailbreak out of PSGI and handle bidirectional client server
980 communication manually, such as when you are using cometd or websockets.
984 You should never need to call these yourself in application code,
985 however they are useful if extending Catalyst by applying a request role.
987 =head2 $self->prepare_headers()
989 Sets up the C<< $res->headers >> accessor.
991 =head2 $self->prepare_body()
993 Sets up the body using L<HTTP::Body>
995 =head2 $self->prepare_body_chunk()
997 Add a chunk to the request body.
999 =head2 $self->prepare_body_parameters()
1001 Sets up parameters from body.
1003 =head2 $self->prepare_cookies()
1005 Parse cookies from header. Sets up a L<CGI::Simple::Cookie> object.
1007 =head2 $self->prepare_connection()
1009 Sets up various fields in the request like the local and remote addresses,
1010 request method, hostname requested etc.
1012 =head2 $self->prepare_parameters()
1014 Ensures that the body has been parsed, then builds the parameters, which are
1015 combined from those in the request and those in the body.
1017 If parameters have already been set will clear the parameters and build them again.
1021 Access to the raw PSGI env.
1029 Catalyst Contributors, see Catalyst.pm
1033 This library is free software. You can redistribute it and/or modify
1034 it under the same terms as Perl itself.
1038 __PACKAGE__->meta->make_immutable;