package Catalyst::Request; use Socket qw( getaddrinfo getnameinfo AI_NUMERICHOST NI_NAMEREQD NIx_NOSERV ); use Carp; use utf8; use URI::http; use URI::https; use URI::QueryParam; use HTTP::Headers; use Stream::Buffered; use Hash::MultiValue; use Scalar::Util; use HTTP::Body; use Catalyst::Exception; use Catalyst::Request::PartData; use Moose; use namespace::clean -except => 'meta'; with 'MooseX::Emulate::Class::Accessor::Fast'; has env => (is => 'ro', writer => '_set_env', predicate => '_has_env'); # XXX Deprecated crap here - warn? has action => (is => 'rw'); # XXX: Deprecated in docs ages ago (2006), deprecated with warning in 5.8000 due # to confusion between Engines and Plugin::Authentication. Remove in 5.8100? has user => (is => 'rw'); sub snippets { shift->captures(@_) } has _read_position => ( # FIXME: work around Moose bug RT#75367 # init_arg => undef, is => 'ro', writer => '_set_read_position', default => 0, ); has _read_length => ( # FIXME: work around Moose bug RT#75367 # init_arg => undef, is => 'ro', default => sub { my $self = shift; $self->header('Content-Length') || 0; }, lazy => 1, ); has address => (is => 'rw'); has arguments => (is => 'rw', default => sub { [] }); has cookies => (is => 'ro', builder => 'prepare_cookies', lazy => 1); sub prepare_cookies { my ( $self ) = @_; if ( my $header = $self->header('Cookie') ) { return { CGI::Simple::Cookie->parse($header) }; } {}; } has query_keywords => (is => 'rw'); has match => (is => 'rw'); has method => (is => 'rw'); has protocol => (is => 'rw'); has query_parameters => (is => 'rw', lazy=>1, default => sub { shift->_use_hash_multivalue ? Hash::MultiValue->new : +{} }); has secure => (is => 'rw', default => 0); has captures => (is => 'rw', default => sub { [] }); has uri => (is => 'rw', predicate => 'has_uri'); has remote_user => (is => 'rw'); has headers => ( is => 'rw', isa => 'HTTP::Headers', handles => [qw(content_encoding content_length content_type header referer user_agent)], builder => 'prepare_headers', lazy => 1, ); sub prepare_headers { my ($self) = @_; my $env = $self->env; my $headers = HTTP::Headers->new(); for my $header (keys %{ $env }) { next unless $header =~ /^(HTTP|CONTENT|COOKIE)/i; (my $field = $header) =~ s/^HTTPS?_//; $field =~ tr/_/-/; $headers->header($field => $env->{$header}); } return $headers; } has _log => ( is => 'ro', weak_ref => 1, required => 1, ); has io_fh => ( is=>'ro', predicate=>'_has_io_fh', lazy=>1, builder=>'_build_io_fh'); sub _build_io_fh { my $self = shift; return $self->env->{'psgix.io'} || ( $self->env->{'net.async.http.server.req'} && $self->env->{'net.async.http.server.req'}->stream) ## Until I can make ioasync cabal see the value of supportin psgix.io (jnap) || die "Your Server does not support psgix.io"; }; has data_handlers => ( is=>'ro', isa=>'HashRef', default=>sub { +{} } ); has body_data => ( is=>'ro', lazy=>1, builder=>'_build_body_data'); sub _build_body_data { my ($self) = @_; # Not sure if these returns should not be exceptions... my $content_type = $self->content_type || return; return unless ($self->method eq 'POST' || $self->method eq 'PUT' || $self->method eq 'PATCH'); my ($match) = grep { $content_type =~/$_/i } keys(%{$self->data_handlers}); if($match) { my $fh = $self->body; local $_ = $fh; return $self->data_handlers->{$match}->($fh, $self); } else { Catalyst::Exception->throw( sprintf '%s does not have an available data handler. Valid data_handlers are %s.', $content_type, join ', ', sort keys %{$self->data_handlers} ); } } has _use_hash_multivalue => ( is=>'ro', required=>1, default=> sub {0}); # Amount of data to read from input on each pass our $CHUNKSIZE = 64 * 1024; sub read { my ($self, $maxlength) = @_; my $remaining = $self->_read_length - $self->_read_position; $maxlength ||= $CHUNKSIZE; # Are we done reading? if ( $remaining <= 0 ) { return; } my $readlen = ( $remaining > $maxlength ) ? $maxlength : $remaining; my $rc = $self->read_chunk( my $buffer, $readlen ); if ( defined $rc ) { if (0 == $rc) { # Nothing more to read even though Content-Length # said there should be. return; } $self->_set_read_position( $self->_read_position + $rc ); return $buffer; } else { Catalyst::Exception->throw( message => "Unknown error reading input: $!" ); } } sub read_chunk { my $self = shift; return $self->env->{'psgi.input'}->read(@_); } has body_parameters => ( is => 'rw', required => 1, lazy => 1, predicate => 'has_body_parameters', builder => 'prepare_body_parameters', ); has uploads => ( is => 'rw', required => 1, default => sub { {} }, ); has parameters => ( is => 'rw', lazy => 1, builder => '_build_parameters', clearer => '_clear_parameters', ); # TODO: # - Can we lose the before modifiers which just call prepare_body ? # they are wasteful, slow us down and feel cluttery. # Can we make _body an attribute, have the rest of # these lazy build from there and kill all the direct hash access # in Catalyst.pm and Engine.pm? sub prepare_parameters { my ( $self ) = @_; $self->_clear_parameters; return $self->parameters; } sub _build_parameters { my ( $self ) = @_; my $parameters = {}; my $body_parameters = $self->body_parameters; my $query_parameters = $self->query_parameters; if($self->_use_hash_multivalue) { return Hash::MultiValue->new($query_parameters->flatten, $body_parameters->flatten); } # We copy, no references foreach my $name (keys %$query_parameters) { my $param = $query_parameters->{$name}; $parameters->{$name} = ref $param eq 'ARRAY' ? [ @$param ] : $param; } # Merge query and body parameters foreach my $name (keys %$body_parameters) { my $param = $body_parameters->{$name}; my @values = ref $param eq 'ARRAY' ? @$param : ($param); if ( my $existing = $parameters->{$name} ) { unshift(@values, (ref $existing eq 'ARRAY' ? @$existing : $existing)); } $parameters->{$name} = @values > 1 ? \@values : $values[0]; } $parameters; } has _uploadtmp => ( is => 'ro', predicate => '_has_uploadtmp', ); sub prepare_body { my ( $self ) = @_; # If previously applied middleware created the HTTP::Body object, then we # just use that one. if(my $plack_body = $self->_has_env ? $self->env->{'plack.request.http.body'} : undef) { $self->_body($plack_body); $self->_body->cleanup(1); return; } # If there is nothing to read, set body to naught and return. This # will cause all body code to be skipped return $self->_body(0) unless my $length = $self->_read_length; # Unless the body has already been set, create it. Not sure about this # code, how else might it be set, but this was existing logic. unless ($self->_body) { my $type = $self->header('Content-Type'); $self->_body(HTTP::Body->new( $type, $length )); $self->_body->cleanup(1); # JNAP: I'm not sure this is doing what we expect, but it also doesn't # seem to be hurting (seems ->_has_uploadtmp is true more than I would # expect. $self->_body->tmpdir( $self->_uploadtmp ) if $self->_has_uploadtmp; } # Ok if we get this far, we have to read psgi.input into the new body # object. Lets play nice with any plack app or other downstream, so # we create a buffer unless one exists. my $stream_buffer; if ($self->env->{'psgix.input.buffered'}) { # Be paranoid about previous psgi middleware or apps that read the # input but didn't return the buffer to the start. $self->env->{'psgi.input'}->seek(0, 0); } else { $stream_buffer = Stream::Buffered->new($length); } # Check for definedness as you could read '0' while ( defined ( my $chunk = $self->read() ) ) { $self->prepare_body_chunk($chunk); next unless $stream_buffer; $stream_buffer->print($chunk) || die sprintf "Failed to write %d bytes to psgi.input file: $!", length( $chunk ); } # Ok, we read the body. Lets play nice for any PSGI app down the pipe if ($stream_buffer) { $self->env->{'psgix.input.buffered'} = 1; $self->env->{'psgi.input'} = $stream_buffer->rewind; } else { $self->env->{'psgi.input'}->seek(0, 0); # Reset the buffer for downstream middleware or apps } # paranoia against wrong Content-Length header my $remaining = $length - $self->_read_position; if ( $remaining > 0 ) { Catalyst::Exception->throw("Wrong Content-Length value: $length" ); } } sub prepare_body_chunk { my ( $self, $chunk ) = @_; $self->_body->add($chunk); } sub prepare_body_parameters { my ( $self, $c ) = @_; return $self->body_parameters if $self->has_body_parameters; $self->prepare_body if ! $self->_has_body; unless($self->_body) { my $return = $self->_use_hash_multivalue ? Hash::MultiValue->new : {}; $self->body_parameters($return); return $return; } my $params; my %part_data = %{$self->_body->part_data}; if(scalar %part_data && !$c->config->{skip_complex_post_part_handling}) { foreach my $key (keys %part_data) { my $proto_value = $part_data{$key}; my ($val, @extra) = (ref($proto_value)||'') eq 'ARRAY' ? @$proto_value : ($proto_value); $key = $c->_handle_param_unicode_decoding($key) if ($c and $c->encoding and !$c->config->{skip_body_param_unicode_decoding}); if(@extra) { $params->{$key} = [map { Catalyst::Request::PartData->build_from_part_data($c, $_) } ($val,@extra)]; } else { $params->{$key} = Catalyst::Request::PartData->build_from_part_data($c, $val); } } } else { $params = $self->_body->param; # If we have an encoding configured (like UTF-8) in general we expect a client # to POST with the encoding we fufilled the request in. Otherwise don't do any # encoding (good change wide chars could be in HTML entity style llike the old # days -JNAP # so, now that HTTP::Body prepared the body params, we gotta 'walk' the structure # and do any needed decoding. # This only does something if the encoding is set via the encoding param. Remember # this is assuming the client is not bad and responds with what you provided. In # general you can just use utf8 and get away with it. # # I need to see if $c is here since this also doubles as a builder for the object :( if($c and $c->encoding and !$c->config->{skip_body_param_unicode_decoding}) { $params = $c->_handle_unicode_decoding($params); } } my $return = $self->_use_hash_multivalue ? Hash::MultiValue->from_mixed($params) : $params; $self->body_parameters($return) unless $self->has_body_parameters; return $return; } sub prepare_connection { my ($self) = @_; my $env = $self->env; $self->address( $env->{REMOTE_ADDR} ); $self->hostname( $env->{REMOTE_HOST} ) if exists $env->{REMOTE_HOST}; $self->protocol( $env->{SERVER_PROTOCOL} ); $self->remote_user( $env->{REMOTE_USER} ); $self->method( $env->{REQUEST_METHOD} ); $self->secure( $env->{'psgi.url_scheme'} eq 'https' ? 1 : 0 ); } # XXX - FIXME - method is here now, move this crap... around parameters => sub { my ($orig, $self, $params) = @_; if ($params) { if ( !ref $params ) { $self->_log->warn( "Attempt to retrieve '$params' with req->params(), " . "you probably meant to call req->param('$params')" ); $params = undef; } return $self->$orig($params); } $self->$orig(); }; has base => ( is => 'rw', required => 1, lazy => 1, default => sub { my $self = shift; return $self->path if $self->has_uri; }, ); has _body => ( is => 'rw', clearer => '_clear_body', predicate => '_has_body', ); # Eugh, ugly. Should just be able to rename accessor methods to 'body' # and provide a custom reader.. sub body { my $self = shift; $self->prepare_body unless $self->_has_body; croak 'body is a reader' if scalar @_; return blessed $self->_body ? $self->_body->body : $self->_body; } has hostname => ( is => 'rw', required => 1, lazy => 1, default => sub { my ($self) = @_; my ( $err, $sockaddr ) = getaddrinfo( $self->address, # no service '', { flags => AI_NUMERICHOST } ); if ( $err ) { $self->_log->warn("resolve of hostname failed: $err"); return $self->address; } ( $err, my $hostname ) = getnameinfo( $sockaddr->{addr}, NI_NAMEREQD, # we are only interested in the hostname, not the servicename NIx_NOSERV ); if ( $err ) { $self->_log->warn("resolve of hostname failed: $err"); return $self->address; } return $hostname; }, ); has _path => ( is => 'rw', predicate => '_has_path', clearer => '_clear_path' ); sub args { shift->arguments(@_) } sub body_params { shift->body_parameters(@_) } sub input { shift->body(@_) } sub params { shift->parameters(@_) } sub query_params { shift->query_parameters(@_) } sub path_info { shift->path(@_) } =for stopwords param params =head1 NAME Catalyst::Request - provides information about the current client request =head1 SYNOPSIS $req = $c->request; $req->address eq "127.0.0.1"; $req->arguments; $req->args; $req->base; $req->body; $req->body_data; $req->body_parameters; $req->content_encoding; $req->content_length; $req->content_type; $req->cookie; $req->cookies; $req->header; $req->headers; $req->hostname; $req->input; $req->query_keywords; $req->match; $req->method; $req->param; $req->parameters; $req->params; $req->path; $req->protocol; $req->query_parameters; $req->read; $req->referer; $req->secure; $req->captures; $req->upload; $req->uploads; $req->uri; $req->user; $req->user_agent; $req->env; See also L, L. =head1 DESCRIPTION This is the Catalyst Request class, which provides an interface to data for the current client request. The request object is prepared by L, thus hiding the details of the particular engine implementation. =head1 METHODS =head2 $req->address Returns the IP address of the client. =head2 $req->arguments Returns a reference to an array containing the arguments. print $c->request->arguments->[0]; For example, if your action was package MyApp::Controller::Foo; sub moose : Local { ... } and the URI for the request was C, the string C would be the first and only argument. Arguments get automatically URI-unescaped for you. =head2 $req->args Shortcut for L. =head2 $req->base Contains the URI base. This will always have a trailing slash. Note that the URI scheme (e.g., http vs. https) must be determined through heuristics; depending on your server configuration, it may be incorrect. See $req->secure for more info. If your application was queried with the URI C then C is C. =head2 $req->body Returns the message body of the request, as returned by L: a string, unless Content-Type is C, C, or C, in which case a L object is returned. =head2 $req->body_data Returns a Perl representation of POST/PUT body data that is not classic HTML form data, such as JSON, XML, etc. By default, Catalyst will parse incoming data of the type 'application/json' and return access to that data via this method. You may define addition data_handlers via a global configuration setting. See L for more information. If the POST is malformed in some way (such as undefined or not content that matches the content-type) we raise a L with the error text as the message. If the POSTed content type does not match an available data handler, this will also raise an exception. =head2 $req->body_parameters Returns a reference to a hash containing body (POST) parameters. Values can be either a scalar or an arrayref containing scalars. print $c->request->body_parameters->{field}; print $c->request->body_parameters->{field}->[0]; These are the parameters from the POST part of the request, if any. B If your POST is multipart, but contains non file upload parts (such as an line part with an alternative encoding or content type) we do our best to try and figure out how the value should be presented. If there's a specified character set we will use that to decode rather than the default encoding set by the application. However if there are complex headers and we cannot determine the correct way to extra a meaningful value from the upload, in this case any part like this will be represented as an instance of L. Patches and review of this part of the code welcomed. =head2 $req->body_params Shortcut for body_parameters. =head2 $req->content_encoding Shortcut for $req->headers->content_encoding. =head2 $req->content_length Shortcut for $req->headers->content_length. =head2 $req->content_type Shortcut for $req->headers->content_type. =head2 $req->cookie A convenient method to access $req->cookies. $cookie = $c->request->cookie('name'); @cookies = $c->request->cookie; =cut sub cookie { my $self = shift; if ( @_ == 0 ) { return keys %{ $self->cookies }; } if ( @_ == 1 ) { my $name = shift; unless ( exists $self->cookies->{$name} ) { return undef; } return $self->cookies->{$name}; } } =head2 $req->cookies Returns a reference to a hash containing the cookies. print $c->request->cookies->{mycookie}->value; The cookies in the hash are indexed by name, and the values are L objects. =head2 $req->header Shortcut for $req->headers->header. =head2 $req->headers Returns an L object containing the headers for the current request. print $c->request->headers->header('X-Catalyst'); =head2 $req->hostname Returns the hostname of the client. Use C<< $req->uri->host >> to get the hostname of the server. =head2 $req->input Alias for $req->body. =head2 $req->query_keywords Contains the keywords portion of a query string, when no '=' signs are present. http://localhost/path?some+keywords $c->request->query_keywords will contain 'some keywords' =head2 $req->match This contains the matching part of a Regex action. Otherwise it returns the same as 'action', except for default actions, which return an empty string. =head2 $req->method Contains the request method (C, C, C, etc). =head2 $req->param Returns GET and POST parameters with a CGI.pm-compatible param method. This is an alternative method for accessing parameters in $c->req->parameters. $value = $c->request->param( 'foo' ); @values = $c->request->param( 'foo' ); @params = $c->request->param; Like L, and B earlier versions of Catalyst, passing multiple arguments to this method, like this: $c->request->param( 'foo', 'bar', 'gorch', 'quxx' ); will set the parameter C to the multiple values C, C and C. Previously this would have added C as another value to C (creating it if it didn't exist before), and C as another value for C. B this is considered a legacy interface and care should be taken when using it. C<< scalar $c->req->param( 'foo' ) >> will return only the first C param even if multiple are present; C<< $c->req->param( 'foo' ) >> will return a list of as many are present, which can have unexpected consequences when writing code of the form: $foo->bar( a => 'b', baz => $c->req->param( 'baz' ), ); If multiple C parameters are provided this code might corrupt data or cause a hash initialization error. For a more straightforward interface see C<< $c->req->parameters >>. B Interfaces like this, which are based on L and the C method are known to cause demonstrated exploits. It is highly recommended that you avoid using this method, and migrate existing code away from it. Here's a whitepaper of the exploit: L B Further discussion on IRC indicate that the L core team from 'back then' were well aware of this hack and this is the main reason we added the new approach to getting parameters in the first place. Basically this is an exploit that takes advantage of how L<\param> will do one thing in scalar context and another thing in list context. This is combined with how Perl chooses to deal with duplicate keys in a hash definition by overwriting the value of existing keys with a new value if the same key shows up again. Generally you will be vulnerable to this exploit if you are using this method in a direct assignment in a hash, such as with a L create statement. For example, if you have parameters like: user?user=123&foo=a&foo=user&foo=456 You could end up with extra parameters injected into your method calls: $c->model('User')->create({ user => $c->req->param('user'), foo => $c->req->param('foo'), }); Which would look like: $c->model('User')->create({ user => 123, foo => qw(a user 456), }); (or to be absolutely clear if you are not seeing it): $c->model('User')->create({ user => 456, foo => 'a', }); Possible remediations include scrubbing your parameters with a form validator like L or being careful to force scalar context using the scalar keyword: $c->model('User')->create({ user => scalar($c->req->param('user')), foo => scalar($c->req->param('foo')), }); Upcoming versions of L will disable this interface by default and require you to positively enable it should you require it for backwards compatibility reasons. =cut sub param { my $self = shift; if ( @_ == 0 ) { return keys %{ $self->parameters }; } # If anything in @_ is undef, carp about that, and remove it from # the list; my @params = grep { defined($_) ? 1 : do {carp "You called ->params with an undefined value"; 0} } @_; if ( @params == 1 ) { defined(my $param = shift @params) || carp "You called ->params with an undefined value 2"; unless ( exists $self->parameters->{$param} ) { return wantarray ? () : undef; } if ( ref $self->parameters->{$param} eq 'ARRAY' ) { return (wantarray) ? @{ $self->parameters->{$param} } : $self->parameters->{$param}->[0]; } else { return (wantarray) ? ( $self->parameters->{$param} ) : $self->parameters->{$param}; } } elsif ( @params > 1 ) { my $field = shift @params; $self->parameters->{$field} = [@params]; } } =head2 $req->parameters Returns a reference to a hash containing GET and POST parameters. Values can be either a scalar or an arrayref containing scalars. print $c->request->parameters->{field}; print $c->request->parameters->{field}->[0]; This is the combination of C and C. =head2 $req->params Shortcut for $req->parameters. =head2 $req->path Returns the path, i.e. the part of the URI after $req->base, for the current request. http://localhost/path/foo $c->request->path will contain 'path/foo' =head2 $req->path_info Alias for path, added for compatibility with L. =cut sub path { my ( $self, @params ) = @_; if (@params) { $self->uri->path(@params); $self->_clear_path; } elsif ( $self->_has_path ) { return $self->_path; } else { my $path = $self->uri->path; my $location = $self->base->path; $path =~ s/^(\Q$location\E)?//; $path =~ s/^\///; $self->_path($path); return $path; } } =head2 $req->protocol Returns the protocol (HTTP/1.0 or HTTP/1.1) used for the current request. =head2 $req->query_parameters =head2 $req->query_params Returns a reference to a hash containing query string (GET) parameters. Values can be either a scalar or an arrayref containing scalars. print $c->request->query_parameters->{field}; print $c->request->query_parameters->{field}->[0]; =head2 $req->read( [$maxlength] ) Reads a chunk of data from the request body. This method is intended to be used in a while loop, reading $maxlength bytes on every call. $maxlength defaults to the size of the request if not specified. =head2 $req->read_chunk(\$buff, $max) Reads a chunk. You have to set MyApp->config(parse_on_demand => 1) to use this directly. =head2 $req->referer Shortcut for $req->headers->referer. Returns the referring page. =head2 $req->secure Returns true or false, indicating whether the connection is secure (https). The reliability of $req->secure may depend on your server configuration; Catalyst relies on PSGI to determine whether or not a request is secure (Catalyst looks at psgi.url_scheme), and different PSGI servers may make this determination in different ways (as by directly passing along information from the server, interpreting any of several HTTP headers, or using heuristics of their own). =head2 $req->captures Returns a reference to an array containing captured args from chained actions or regex captures. my @captures = @{ $c->request->captures }; =head2 $req->upload A convenient method to access $req->uploads. $upload = $c->request->upload('field'); @uploads = $c->request->upload('field'); @fields = $c->request->upload; for my $upload ( $c->request->upload('field') ) { print $upload->filename; } =cut sub upload { my $self = shift; if ( @_ == 0 ) { return keys %{ $self->uploads }; } if ( @_ == 1 ) { my $upload = shift; unless ( exists $self->uploads->{$upload} ) { return wantarray ? () : undef; } if ( ref $self->uploads->{$upload} eq 'ARRAY' ) { return (wantarray) ? @{ $self->uploads->{$upload} } : $self->uploads->{$upload}->[0]; } else { return (wantarray) ? ( $self->uploads->{$upload} ) : $self->uploads->{$upload}; } } if ( @_ > 1 ) { while ( my ( $field, $upload ) = splice( @_, 0, 2 ) ) { if ( exists $self->uploads->{$field} ) { for ( $self->uploads->{$field} ) { $_ = [$_] unless ref($_) eq "ARRAY"; push( @$_, $upload ); } } else { $self->uploads->{$field} = $upload; } } } } =head2 $req->uploads Returns a reference to a hash containing uploads. Values can be either a L object, or an arrayref of L objects. my $upload = $c->request->uploads->{field}; my $upload = $c->request->uploads->{field}->[0]; =head2 $req->uri Returns a L object for the current request. Stringifies to the URI text. =head2 $req->mangle_params( { key => 'value' }, $appendmode); Returns a hashref of parameters stemming from the current request's params, plus the ones supplied. Keys for which no current param exists will be added, keys with undefined values will be removed and keys with existing params will be replaced. Note that you can supply a true value as the final argument to change behavior with regards to existing parameters, appending values rather than replacing them. A quick example: # URI query params foo=1 my $hashref = $req->mangle_params({ foo => 2 }); # Result is query params of foo=2 versus append mode: # URI query params foo=1 my $hashref = $req->mangle_params({ foo => 2 }, 1); # Result is query params of foo=1&foo=2 This is the code behind C. =cut sub mangle_params { my ($self, $args, $append) = @_; carp('No arguments passed to mangle_params()') unless $args; foreach my $value ( values %$args ) { next unless defined $value; for ( ref $value eq 'ARRAY' ? @$value : $value ) { $_ = "$_"; # utf8::encode($_); } }; my %params = %{ $self->uri->query_form_hash }; foreach my $key (keys %{ $args }) { my $val = $args->{$key}; if(defined($val)) { if($append && exists($params{$key})) { # This little bit of heaven handles appending a new value onto # an existing one regardless if the existing value is an array # or not, and regardless if the new value is an array or not $params{$key} = [ ref($params{$key}) eq 'ARRAY' ? @{ $params{$key} } : $params{$key}, ref($val) eq 'ARRAY' ? @{ $val } : $val ]; } else { $params{$key} = $val; } } else { # If the param wasn't defined then we delete it. delete($params{$key}); } } return \%params; } =head2 $req->uri_with( { key => 'value' } ); Returns a rewritten URI object for the current request. Key/value pairs passed in will override existing parameters. You can remove an existing parameter by passing in an undef value. Unmodified pairs will be preserved. You may also pass an optional second parameter that puts C into append mode: $req->uri_with( { key => 'value' }, { mode => 'append' } ); See C for an explanation of this behavior. =cut sub uri_with { my( $self, $args, $behavior) = @_; carp( 'No arguments passed to uri_with()' ) unless $args; my $append = 0; if((ref($behavior) eq 'HASH') && defined($behavior->{mode}) && ($behavior->{mode} eq 'append')) { $append = 1; } my $params = $self->mangle_params($args, $append); my $uri = $self->uri->clone; $uri->query_form($params); return $uri; } =head2 $req->remote_user Returns the value of the C environment variable. =head2 $req->user_agent Shortcut to $req->headers->user_agent. Returns the user agent (browser) version string. =head2 $req->io_fh Returns a psgix.io bidirectional socket, if your server supports one. Used for when you want to jailbreak out of PSGI and handle bidirectional client server communication manually, such as when you are using cometd or websockets. =head1 SETUP METHODS You should never need to call these yourself in application code, however they are useful if extending Catalyst by applying a request role. =head2 $self->prepare_headers() Sets up the C<< $res->headers >> accessor. =head2 $self->prepare_body() Sets up the body using L =head2 $self->prepare_body_chunk() Add a chunk to the request body. =head2 $self->prepare_body_parameters() Sets up parameters from body. =head2 $self->prepare_cookies() Parse cookies from header. Sets up a L object. =head2 $self->prepare_connection() Sets up various fields in the request like the local and remote addresses, request method, hostname requested etc. =head2 $self->prepare_parameters() Ensures that the body has been parsed, then builds the parameters, which are combined from those in the request and those in the body. If parameters have already been set will clear the parameters and build them again. =head2 $self->env Access to the raw PSGI env. =head2 meta Provided by Moose =head1 AUTHORS Catalyst Contributors, see Catalyst.pm =head1 COPYRIGHT This library is free software. You can redistribute it and/or modify it under the same terms as Perl itself. =cut __PACKAGE__->meta->make_immutable; 1;