use Plack::Middleware::ContentLength;
use Plack::Middleware::Head;
use Plack::Middleware::HTTPExceptions;
+use Plack::Middleware::FixMissingBodyInRedirect;
+use Plack::Middleware::MethodOverride;
+use Plack::Middleware::RemoveRedundantBody;
+use Catalyst::Middleware::Stash;
use Plack::Util;
use Class::Load 'load_class';
+use Encode 2.21 'decode_utf8', 'encode_utf8';
BEGIN { require 5.008003; }
has stack => (is => 'ro', default => sub { [] });
-has stash => (is => 'rw', default => sub { {} });
has state => (is => 'rw', default => 0);
has stats => (is => 'rw');
has action => (is => 'rw');
lazy => 1,
);
sub _build_response_constructor_args {
- my $self = shift;
- { _log => $self->log };
+ return +{
+ _log => $_[0]->log,
+ encoding => $_[0]->encoding,
+ };
}
has namespace => (is => 'rw');
for qw/components arguments dispatcher engine log dispatcher_class
engine_loader context_class request_class response_class stats_class
setup_finished _psgi_app loading_psgi_file run_options _psgi_middleware
- _data_handlers/;
+ _data_handlers _encoding _encode_check finalized_default_middleware/;
__PACKAGE__->dispatcher_class('Catalyst::Dispatcher');
__PACKAGE__->request_class('Catalyst::Request');
__PACKAGE__->response_class('Catalyst::Response');
__PACKAGE__->stats_class('Catalyst::Stats');
+__PACKAGE__->_encode_check(Encode::FB_CROAK | Encode::LEAVE_SRC);
# Remember to update this in Catalyst::Runtime as well!
-
-our $VERSION = '5.90059_004';
+our $VERSION = '5.90089_001';
+$VERSION = eval $VERSION if $VERSION =~ /_/; # numify for warning-free dev releases
sub import {
my ( $class, @arguments ) = @_;
# stash is automatically passed to the view for use in a template
$c->forward( 'MyApp::View::TT' );
-=cut
+The stash hash is currently stored in the PSGI C<$env> and is managed by
+L<Catalyst::Middleware::Stash>. Since it's part of the C<$env> items in
+the stash can be accessed in sub applications mounted under your main
+L<Catalyst> application. For example if you delegate the response of an
+action to another L<Catalyst> application, that sub application will have
+access to all the stash keys of the main one, and if can of course add
+more keys of its own. However those new keys will not 'bubble' back up
+to the main application.
-around stash => sub {
- my $orig = shift;
- my $c = shift;
- my $stash = $orig->($c);
- if (@_) {
- my $new_stash = @_ > 1 ? {@_} : $_[0];
- croak('stash takes a hash or hashref') unless ref $new_stash;
- foreach my $key ( keys %$new_stash ) {
- $stash->{$key} = $new_stash->{$key};
- }
- }
+For more information the best thing to do is to review the test case:
+t/middleware-stash.t in the distribution /t directory.
- return $stash;
-};
+=cut
+sub stash {
+ my $c = shift;
+ return Catalyst::Middleware::Stash::get_stash($c->req->env)->(@_);
+}
=head2 $c->error
$c->error('Something bad happened');
+Calling this will always return an arrayref (if there are no errors it
+will be an empty arrayref.
+
=cut
sub error {
$c->error(0);
}
+=head2 $c->has_errors
+
+Returns true if you have errors
+
+=cut
+
+sub has_errors { scalar(@{shift->error}) ? 1:0 }
+
+=head2 $c->last_error
+
+Returns the most recent error in the stack (the one most recently added...)
+or nothing if there are no errors.
+
+=cut
+
+sub last_error { my ($err, @errs) = @{shift->error}; return $err }
+
+=head2 shift_errors
+
+shifts the most recently added error off the error stack and returns if. Returns
+nothing if there are no more errors.
+
+=cut
+
+sub shift_errors {
+ my ($self) = @_;
+ my ($err, @errors) = @{$self->error};
+ $self->{error} = \@errors;
+ return $err;
+}
+
sub _comp_search_prefixes {
my $c = shift;
return map $c->components->{ $_ }, $c->_comp_names_search_prefixes(@_);
Your log class should implement the methods described in
L<Catalyst::Log>.
+=head2 has_encoding
+
+Returned True if there's a valid encoding
+
+=head2 clear_encoding
+
+Clears the encoding for the current context
+
+=head2 encoding
+
+Sets or gets the application encoding. Setting encoding takes either an
+Encoding object or a string that we try to resolve via L<Encode::find_encoding>.
+
+You would expect to get the encoding object back if you attempt to set it. If
+there is a failure you will get undef returned and an error message in the log.
+
+=cut
+
+sub has_encoding { shift->encoding ? 1:0 }
+
+sub clear_encoding {
+ my $c = shift;
+ if(blessed $c) {
+ $c->encoding(undef);
+ } else {
+ $c->log->error("You can't clear encoding on the application");
+ }
+}
+
+sub encoding {
+ my $c = shift;
+ my $encoding;
+
+ if ( scalar @_ ) {
+
+ # Don't let one change this once we are too far into the response
+ if(blessed $c && $c->res->finalized_headers) {
+ Carp::croak("You may not change the encoding once the headers are finalized");
+ return;
+ }
+
+ # Let it be set to undef
+ if (my $wanted = shift) {
+ $encoding = Encode::find_encoding($wanted)
+ or Carp::croak( qq/Unknown encoding '$wanted'/ );
+ binmode(STDERR, ':encoding(' . $encoding->name . ')');
+ }
+ else {
+ binmode(STDERR);
+ }
+
+ $encoding = ref $c
+ ? $c->{encoding} = $encoding
+ : $c->_encoding($encoding);
+ } else {
+ $encoding = ref $c && exists $c->{encoding}
+ ? $c->{encoding}
+ : $c->_encoding;
+ }
+
+ return $encoding;
+}
=head2 $c->debug
B<Note:> You B<should not> wrap this method with method modifiers
or bad things will happen - wrap the C<setup_finalize> method instead.
+B<Note:> You can create a custom setup stage that will execute when the
+application is starting. Use this to customize setup.
+
+ MyApp->setup(-Custom=value);
+
+ sub setup_custom {
+ my ($class, $value) = @_;
+ }
+
+Can be handy if you want to hook into the setup phase.
+
=cut
sub setup {
$class->setup_log( delete $flags->{log} );
$class->setup_plugins( delete $flags->{plugins} );
- # Call plugins setup, this is stupid and evil.
- # Also screws C3 badly on 5.10, hack to avoid.
- {
- no warnings qw/redefine/;
- local *setup = sub { };
- $class->setup unless $Catalyst::__AM_RESTARTING;
- }
-
- $class->setup_middleware();
$class->setup_data_handlers();
$class->setup_dispatcher( delete $flags->{dispatcher} );
if (my $engine = delete $flags->{engine}) {
EOF
}
+ # Call plugins setup, this is stupid and evil.
+ # Also screws C3 badly on 5.10, hack to avoid.
+ {
+ no warnings qw/redefine/;
+ local *setup = sub { };
+ $class->setup unless $Catalyst::__AM_RESTARTING;
+ }
+
+ # If you are expecting configuration info as part of your setup, it needs
+ # to get called here and below, since we need the above line to support
+ # ConfigLoader based configs.
+
+ $class->setup_encoding();
+ $class->setup_middleware();
+
# Initialize our data structure
$class->components( {} );
}
$class->setup_finalize;
- # Should be the last thing we do so that user things hooking
- # setup_finalize can log..
+
+ # Flush the log for good measure (in case something turned off 'autoflush' early)
$class->log->_flush() if $class->log->can('_flush');
- return 1; # Explicit return true as people have __PACKAGE__->setup as the last thing in their class. HATE.
+
+ return $class || 1; # Just in case someone named their Application 0...
}
=head2 $app->setup_finalize
=head2 $c->uri_for( $action, \@captures?, @args?, \%query_values? )
+=head2 $c->uri_for( $action, [@captures, @args], \%query_values? )
+
Constructs an absolute L<URI> object based on the application root, the
provided path, and the additional arguments and query parameters provided.
When used as a string, provides a textual URI. If you need more flexibility
# Path to a static resource
$c->uri_for('/static/images/logo.png');
+In general the scheme of the generated URI object will follow the incoming request
+however if your targeted action or action chain has the Scheme attribute it will
+use that instead.
+
=cut
sub uri_for {
( scalar @args && ref $args[$#args] eq 'HASH' ? pop @args : {} );
carp "uri_for called with undef argument" if grep { ! defined $_ } @args;
+
+ my @encoded_args = ();
foreach my $arg (@args) {
- utf8::encode($arg) if utf8::is_utf8($arg);
- $arg =~ s/([^$URI::uric])/$URI::Escape::escapes{$1}/go;
+ if(ref($arg)||'' eq 'ARRAY') {
+ push @encoded_args, [map {
+ my $encoded = encode_utf8 $_;
+ $encoded =~ s/([^$URI::uric])/$URI::Escape::escapes{$1}/go;
+ $encoded;
+ } @$arg];
+ } else {
+ push @encoded_args, do {
+ my $encoded = encode_utf8 $arg;
+ $encoded =~ s/([^$URI::uric])/$URI::Escape::escapes{$1}/go;
+ $encoded;
+ }
+ }
}
+ my $target_action = $path->$_isa('Catalyst::Action') ? $path : undef;
if ( $path->$_isa('Catalyst::Action') ) { # action object
- s|/|%2F|g for @args;
+ s|/|%2F|g for @encoded_args;
my $captures = [ map { s|/|%2F|g; $_; }
- ( scalar @args && ref $args[0] eq 'ARRAY'
- ? @{ shift(@args) }
+ ( scalar @encoded_args && ref $encoded_args[0] eq 'ARRAY'
+ ? @{ shift(@encoded_args) }
: ()) ];
- foreach my $capture (@$captures) {
- utf8::encode($capture) if utf8::is_utf8($capture);
- $capture =~ s/([^$URI::uric])/$URI::Escape::escapes{$1}/go;
- }
-
my $action = $path;
# ->uri_for( $action, \@captures_and_args, \%query_values? )
- if( !@args && $action->number_of_args ) {
+ if( !@encoded_args && $action->number_of_args ) {
my $expanded_action = $c->dispatcher->expand_action( $action );
-
my $num_captures = $expanded_action->number_of_captures;
- unshift @args, splice @$captures, $num_captures;
+ unshift @encoded_args, splice @$captures, $num_captures;
}
- $path = $c->dispatcher->uri_for_action($action, $captures);
+ # use Devel::Dwarn;Dwarn $captures;
+
+ if($action->has_captures_constraints) {
+ unless($action->match_captures($c, $captures)) {
+ carp "@{$captures} do not match the type constraints in $action";
+ }
+ }
+
+ $path = $c->dispatcher->uri_for_action($action, $captures);
if (not defined $path) {
$c->log->debug(qq/Can't find uri_for action '$action' @$captures/)
if $c->debug;
return undef;
}
$path = '/' if $path eq '';
+
+ # At this point @encoded_args is the remaining Args (all captures removed).
+ if($action->has_args_constraints) {
+ unless($action->match_args($c,\@encoded_args)) {
+ carp "@encoded_args do not match the type constraints in $action";
+ }
+ }
}
- unshift(@args, $path);
+ unshift(@encoded_args, $path);
unless (defined $path && $path =~ s!^/!!) { # in-place strip
my $namespace = $c->namespace;
if (defined $path) { # cheesy hack to handle path '../foo'
- $namespace =~ s{(?:^|/)[^/]+$}{} while $args[0] =~ s{^\.\./}{};
+ $namespace =~ s{(?:^|/)[^/]+$}{} while $encoded_args[0] =~ s{^\.\./}{};
}
- unshift(@args, $namespace || '');
+ unshift(@encoded_args, $namespace || '');
}
# join args with '/', or a blank string
- my $args = join('/', grep { defined($_) } @args);
+ my $args = join('/', grep { defined($_) } @encoded_args);
$args =~ s/\?/%3F/g; # STUPID STUPID SPECIAL CASE
$args =~ s!^/+!!;
my ($base, $class) = ('/', 'URI::_generic');
if(blessed($c)) {
$base = $c->req->base;
- $class = ref($base);
+ if($target_action) {
+ $target_action = $c->dispatcher->expand_action($target_action);
+ if(my $s = $target_action->scheme) {
+ $s = lc($s);
+ $class = "URI::$s";
+ $base->scheme($s);
+ } else {
+ $class = ref($base);
+ }
+ } else {
+ $class = ref($base);
+ }
+
$base =~ s{(?<!/)$}{/};
}
# somewhat lifted from URI::_query's query_form
$query = '?'.join('&', map {
my $val = $params->{$_};
- s/([;\/?:@&=+,\$\[\]%])/$URI::Escape::escapes{$1}/go;
+ #s/([;\/?:@&=+,\$\[\]%])/$URI::Escape::escapes{$1}/go; ## Commented out because seems to lead to double encoding - JNAP
s/ /+/g;
my $key = $_;
$val = '' unless defined $val;
(map {
my $param = "$_";
- utf8::encode( $param ) if utf8::is_utf8($param);
+ $param = encode_utf8($param);
# using the URI::Escape pattern here so utf8 chars survive
$param =~ s/([^A-Za-z0-9\-_.!~*'() ])/$URI::Escape::escapes{$1}/go;
$param =~ s/ /+/g;
+
+ $key = encode_utf8($key);
+ # using the URI::Escape pattern here so utf8 chars survive
+ $key =~ s/([^A-Za-z0-9\-_.!~*'() ])/$URI::Escape::escapes{$1}/go;
+ $key =~ s/ /+/g;
+
"${key}=$param"; } ( ref $val eq 'ARRAY' ? @$val : $val ));
} @keys);
}
+ warn $base;
+ warn $args;
+
my $res = bless(\"${base}${args}${query}", $class);
$res;
}
my $last = pop( @{ $c->stack } );
if ( my $error = $@ ) {
+ #rethow if this can be handled by middleware
+ if ( $c->_handle_http_exception($error) ) {
+ foreach my $err (@{$c->error}) {
+ $c->log->error($err);
+ }
+ $c->clear_errors;
+ $c->log->_flush if $c->log->can('_flush');
+
+ $error->can('rethrow') ? $error->rethrow : croak $error;
+ }
if ( blessed($error) and $error->isa('Catalyst::Exception::Detach') ) {
$error->rethrow if $c->depth > 1;
}
# Support skipping finalize for psgix.io style 'jailbreak'. Used to support
# stuff like cometd and websockets
-
+
if($c->request->_has_io_fh) {
$c->log_response;
return;
$c->finalize_error;
}
+ $c->finalize_encoding;
$c->finalize_headers unless $c->response->finalized_headers;
-
$c->finalize_body;
}
=head2 $c->finalize_error
-Finalizes error.
+Finalizes error. If there is only one error in L</error> and it is an object that
+does C<as_psgi> or C<code> we rethrow the error and presume it caught by middleware
+up the ladder. Otherwise we return the debugging error page (in debug mode) or we
+return the default error page (production mode).
=cut
$c->engine->finalize_error( $c, @_ );
} else {
my ($error) = @{$c->error};
- if(
- blessed $error &&
- ($error->can('as_psgi') || $error->can('code'))
- ) {
+ if ( $c->_handle_http_exception($error) ) {
# In the case where the error 'knows what it wants', becauses its PSGI
# aware, just rethow and let middleware catch it
$error->can('rethrow') ? $error->rethrow : croak $error;
- croak $error;
} else {
$c->engine->finalize_error( $c, @_ )
}
if ( my $location = $response->redirect ) {
$c->log->debug(qq/Redirecting to "$location"/) if $c->debug;
$response->header( Location => $location );
-
- if ( !$response->has_body ) {
- # Add a default body if none is already present
- my $encoded_location = encode_entities($location);
- $response->body(<<"EOF");
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml">
- <head>
- <title>Moved</title>
- </head>
- <body>
- <p>This item has moved <a href="$encoded_location">here</a>.</p>
- </body>
-</html>
-EOF
- $response->content_type('text/html; charset=utf-8');
- }
}
# Remove incorrectly added body and content related meta data when returning
# an information response, or a response the is required to not include a body
- if ( $response->status =~ /^(1\d\d|[23]04)$/ ) {
- if($response->has_body) {
- $c->log->debug('Removing body for informational or no content http responses');
- $response->body('');
- $response->headers->remove_header("Content-Length");
- }
- }
-
$c->finalize_cookies;
+ # This currently is a NOOP but I don't want to remove it since I guess people
+ # might have Response subclasses that use it for something... (JNAP)
$c->response->finalize_headers();
# Done
$response->finalized_headers(1);
}
+=head2 $c->finalize_encoding
+
+Make sure your body is encoded properly IF you set an encoding. By
+default the encoding is UTF-8 but you can disable it by explicitly setting the
+encoding configuration value to undef.
+
+We can only encode when the body is a scalar. Methods for encoding via the
+streaming interfaces (such as C<write> and C<write_fh> on L<Catalyst::Response>
+are available).
+
+See L</ENCODING>.
+
+=cut
+
+sub finalize_encoding {
+ my $c = shift;
+ my $res = $c->res || return;
+
+ # Warn if the set charset is different from the one you put into encoding. We need
+ # to do this early since encodable_response is false for this condition and we need
+ # to match the debug output for backcompat (there's a test for this...) -JNAP
+ if(
+ $res->content_type_charset and $c->encoding and
+ (uc($c->encoding->mime_name) ne uc($res->content_type_charset))
+ ) {
+ my $ct = lc($res->content_type_charset);
+ $c->log->debug("Catalyst encoding config is set to encode in '" .
+ $c->encoding->mime_name .
+ "', content type is '$ct', not encoding ");
+ }
+
+ if(
+ ($res->encodable_response) and
+ (defined($res->body)) and
+ (ref(\$res->body) eq 'SCALAR')
+ ) {
+ $c->res->body( $c->encoding->encode( $c->res->body, $c->_encode_check ) );
+
+ # Set the charset if necessary. This might be a bit bonkers since encodable response
+ # is false when the set charset is not the same as the encoding mimetype (maybe
+ # confusing action at a distance here..
+ # Don't try to set the charset if one already exists
+ $c->res->content_type($c->res->content_type . "; charset=" . $c->encoding->mime_name)
+ unless($c->res->content_type_charset);
+ }
+}
+
=head2 $c->finalize_output
An alias for finalize_body.
$c->dispatch;
$status = $c->finalize;
} catch {
- chomp(my $error = $_);
- $class->log->error(qq/Caught exception in engine "$error"/);
#rethow if this can be handled by middleware
- if(blessed $error && ($error->can('as_psgi') || $error->can('code'))) {
- $error->can('rethrow') ? $error->rethrow : croak $error;
+ if ( $class->_handle_http_exception($_) ) {
+ $_->can('rethrow') ? $_->rethrow : croak $_;
}
+ chomp(my $error = $_);
+ $class->log->error(qq/Caught exception in engine "$error"/);
};
$COUNT++;
=cut
-sub prepare_action { my $c = shift; $c->dispatcher->prepare_action( $c, @_ ) }
+sub prepare_action {
+ my $c = shift;
+ my $ret = $c->dispatcher->prepare_action( $c, @_);
+
+ if($c->encoding) {
+ foreach (@{$c->req->arguments}, @{$c->req->captures}) {
+ $_ = $c->_handle_param_unicode_decoding($_);
+ }
+ }
+
+ return $ret;
+}
+
=head2 $c->prepare_body
sub prepare_body_parameters {
my $c = shift;
- $c->engine->prepare_body_parameters( $c, @_ );
+ $c->request->prepare_body_parameters( $c, @_ );
}
=head2 $c->prepare_connection
sub prepare_connection {
my $c = shift;
- # XXX - This is called on the engine (not the request) to maintain
- # Engine::PSGI back compat.
- $c->engine->prepare_connection($c);
+ $c->request->prepare_connection($c);
}
=head2 $c->prepare_cookies
$method ||= '';
$path = '/' unless length $path;
$address ||= '';
+
+ $path =~ s/%([0-9A-Fa-f]{2})/chr(hex($1))/eg;
+ $path = decode_utf8($path);
+
$c->log->debug(qq/"$method" request for "$path" from "$address"/);
$c->log_request_headers($request->headers);
sub prepare_uploads {
my $c = shift;
-
$c->engine->prepare_uploads( $c, @_ );
}
my $class = shift;
my $config = shift;
- my @paths = qw( ::Controller ::C ::Model ::M ::View ::V );
+ my @paths = qw( ::M ::Model ::V ::View ::C ::Controller );
my $extra = delete $config->{ search_extra } || [];
- push @paths, @$extra;
-
- my $locator = Module::Pluggable::Object->new(
- search_path => [ map { s/^(?=::)/$class/; $_; } @paths ],
- %$config
- );
+ unshift @paths, @$extra;
- # XXX think about ditching this sort entirely
- my @comps = sort { length $a <=> length $b } $locator->plugins;
+ my @comps = map { sort { length($a) <=> length($b) } Module::Pluggable::Object->new(
+ search_path => [ map { s/^(?=::)/$class/; $_; } ($_) ],
+ %$config
+ )->plugins } @paths;
return @comps;
}
Adds the following L<Plack> middlewares to your application, since they are
useful and commonly needed:
-L<Plack::Middleware::ReverseProxy>, (conditionally added based on the status
-of your $ENV{REMOTE_ADDR}, and can be forced on with C<using_frontend_proxy>
-or forced off with C<ignore_frontend_proxy>), L<Plack::Middleware::LighttpdScriptNameFix>
-(if you are using Lighttpd), L<Plack::Middleware::IIS6ScriptNameFix> (always
-applied since this middleware is smart enough to conditionally apply itself).
+L<Plack::Middleware::LighttpdScriptNameFix> (if you are using Lighttpd),
+L<Plack::Middleware::IIS6ScriptNameFix> (always applied since this middleware
+is smart enough to conditionally apply itself).
+
+We will also automatically add L<Plack::Middleware::ReverseProxy> if we notice
+that your HTTP $env variable C<REMOTE_ADDR> is '127.0.0.1'. This is usually
+an indication that your server is running behind a proxy frontend. However in
+2014 this is often not the case. We preserve this code for backwards compatibility
+however I B<highly> recommend that if you are running the server behind a front
+end proxy that you clearly indicate so with the C<using_frontend_proxy> configuration
+setting to true for your environment configurations that run behind a proxy. This
+way if you change your front end proxy address someday your code would inexplicably
+stop working as expected.
Additionally if we detect we are using Nginx, we add a bit of custom middleware
to solve some problems with the way that server handles $ENV{PATH_INFO} and
-$ENV{SCRIPT_NAME}
+$ENV{SCRIPT_NAME}.
+
+Please B<NOTE> that if you do use C<using_frontend_proxy> the middleware is now
+adding via C<registered_middleware> rather than this method.
+
+If you are using Lighttpd or IIS6 you may wish to apply these middlewares. In
+general this is no longer a common case but we have this here for backward
+compatibility.
=cut
sub apply_default_middlewares {
my ($app, $psgi_app) = @_;
- $psgi_app = Plack::Middleware::Conditional->wrap(
- $psgi_app,
- builder => sub { Plack::Middleware::ReverseProxy->wrap($_[0]) },
- condition => sub {
- my ($env) = @_;
- return if $app->config->{ignore_frontend_proxy};
- return $env->{REMOTE_ADDR} eq '127.0.0.1'
- || $app->config->{using_frontend_proxy};
- },
- );
+ # Don't add this conditional IF we are explicitly saying we want the
+ # frontend proxy support. We don't need it here since if that is the
+ # case it will be always loaded in the default_middleware.
+
+ unless($app->config->{using_frontend_proxy}) {
+ $psgi_app = Plack::Middleware::Conditional->wrap(
+ $psgi_app,
+ builder => sub { Plack::Middleware::ReverseProxy->wrap($_[0]) },
+ condition => sub {
+ my ($env) = @_;
+ return if $app->config->{ignore_frontend_proxy};
+ return $env->{REMOTE_ADDR} eq '127.0.0.1';
+ },
+ );
+ }
# If we're running under Lighttpd, swap PATH_INFO and SCRIPT_NAME
# http://lists.scsys.co.uk/pipermail/catalyst/2006-June/008361.html
return $psgi_app;
}
-=head2 $c->psgi_app
+=head2 App->psgi_app
+
+=head2 App->to_app
Returns a PSGI application code reference for the catalyst application
-C<$c>. This is the bare application without any middlewares
-applied. C<${myapp}.psgi> is not taken into account.
+C<$c>. This is the bare application created without the C<apply_default_middlewares>
+method called. We do however apply C<registered_middleware> since those are
+integral to how L<Catalyst> functions. Also, unlike starting your application
+with a generated server script (via L<Catalyst::Devel> and C<catalyst.pl>) we do
+not attempt to return a valid L<PSGI> application using any existing C<${myapp}.psgi>
+scripts in your $HOME directory.
+
+B<NOTE> C<apply_default_middlewares> was originally created when the first PSGI
+port was done for v5.90000. These are middlewares that are added to achieve
+backward compatibility with older applications. If you start your application
+using one of the supplied server scripts (generated with L<Catalyst::Devel> and
+the project skeleton script C<catalyst.pl>) we apply C<apply_default_middlewares>
+automatically. This was done so that pre and post PSGI port applications would
+work the same way.
This is what you want to be using to retrieve the PSGI application code
-reference of your Catalyst application for use in F<.psgi> files.
+reference of your Catalyst application for use in a custom F<.psgi> or in your
+own created server modules.
=cut
+*to_app = \&psgi_app;
+
sub psgi_app {
my ($app) = @_;
my $psgi = $app->engine->build_psgi_app($app);
}
}
+=head2 $c->setup_encoding
+
+Sets up the input/output encoding. See L<ENCODING>
+
+=cut
+
+sub setup_encoding {
+ my $c = shift;
+ if( exists($c->config->{encoding}) && !defined($c->config->{encoding}) ) {
+ # Ok, so the user has explicitly said "I don't want encoding..."
+ return;
+ } else {
+ my $enc = defined($c->config->{encoding}) ?
+ delete $c->config->{encoding} : 'UTF-8'; # not sure why we delete it... (JNAP)
+ $c->encoding($enc);
+ }
+}
+
+=head2 handle_unicode_encoding_exception
+
+Hook to let you customize how encoding errors are handled. By default
+we just throw an exception. Receives a hashref of debug information.
+Example:
+
+ $c->handle_unicode_encoding_exception({
+ param_value => $value,
+ error_msg => $_,
+ encoding_step => 'params',
+ });
+
+=cut
+
+sub handle_unicode_encoding_exception {
+ my ( $self, $exception_ctx ) = @_;
+ die $exception_ctx->{error_msg};
+}
+
+# Some unicode helpers cargo culted from the old plugin. These could likely
+# be neater.
+
+sub _handle_unicode_decoding {
+ my ( $self, $value ) = @_;
+
+ return unless defined $value;
+
+ ## I think this mess is to support the old nested
+ if ( ref $value eq 'ARRAY' ) {
+ foreach ( @$value ) {
+ $_ = $self->_handle_unicode_decoding($_);
+ }
+ return $value;
+ }
+ elsif ( ref $value eq 'HASH' ) {
+ foreach (keys %$value) {
+ my $encoded_key = $self->_handle_param_unicode_decoding($_);
+ $value->{$encoded_key} = $self->_handle_unicode_decoding($value->{$_});
+
+ # If the key was encoded we now have two (the original and current so
+ # delete the original.
+ delete $value->{$_} if $_ ne $encoded_key;
+ }
+ return $value;
+ }
+ else {
+ return $self->_handle_param_unicode_decoding($value);
+ }
+}
+
+sub _handle_param_unicode_decoding {
+ my ( $self, $value ) = @_;
+ return unless defined $value; # not in love with just ignoring undefs - jnap
+ return $value if blessed($value); #don't decode when the value is an object.
+
+ my $enc = $self->encoding;
+ return try {
+ $enc->decode( $value, $self->_encode_check );
+ }
+ catch {
+ $self->handle_unicode_encoding_exception({
+ param_value => $value,
+ error_msg => $_,
+ encoding_step => 'params',
+ });
+ };
+}
+
=head2 $c->setup_log
Sets up log by instantiating a L<Catalyst::Log|Catalyst::Log> object and
return $class;
}
- sub _default_plugins { return qw(Unicode::Encoding) }
+ sub _default_plugins { return qw() }
sub setup_plugins {
my ( $class, $plugins ) = @_;
$class => @roles
) if @roles;
}
-}
+}
+
+=head2 default_middleware
+
+Returns a list of instantiated PSGI middleware objects which is the default
+middleware that is active for this application (taking any configuration
+options into account, excluding your custom added middleware via the C<psgi_middleware>
+configuration option). You can override this method if you wish to change
+the default middleware (although do so at risk since some middleware is vital
+to application function.)
+
+The current default middleware list is:
+
+ Catalyst::Middleware::Stash
+ Plack::Middleware::HTTPExceptions
+ Plack::Middleware::RemoveRedundantBody
+ Plack::Middleware::FixMissingBodyInRedirect
+ Plack::Middleware::ContentLength
+ Plack::Middleware::MethodOverride
+ Plack::Middleware::Head
+
+If the configuration setting C<using_frontend_proxy> is true we add:
+
+ Plack::Middleware::ReverseProxy
+
+If the configuration setting C<using_frontend_proxy_path> is true we add:
+
+ Plack::Middleware::ReverseProxyPath
+
+But B<NOTE> that L<Plack::Middleware::ReverseProxyPath> is not a dependency of the
+L<Catalyst> distribution so if you want to use this option you should add it to
+your project distribution file.
+
+These middlewares will be added at L</setup_middleware> during the
+L</setup> phase of application startup.
+
+=cut
+
+sub default_middleware {
+ my $class = shift;
+ my @mw = (
+ Catalyst::Middleware::Stash->new,
+ Plack::Middleware::HTTPExceptions->new,
+ Plack::Middleware::RemoveRedundantBody->new,
+ Plack::Middleware::FixMissingBodyInRedirect->new,
+ Plack::Middleware::ContentLength->new,
+ Plack::Middleware::MethodOverride->new,
+ Plack::Middleware::Head->new);
+
+ if($class->config->{using_frontend_proxy}) {
+ push @mw, Plack::Middleware::ReverseProxy->new;
+ }
+
+ if($class->config->{using_frontend_proxy_path}) {
+ if(Class::Load::try_load_class('Plack::Middleware::ReverseProxyPath')) {
+ push @mw, Plack::Middleware::ReverseProxyPath->new;
+ } else {
+ $class->log->error("Cannot use configuration 'using_frontend_proxy_path' because 'Plack::Middleware::ReverseProxyPath' is not installed");
+ }
+ }
+
+ return @mw;
+}
=head2 registered_middlewares
experience with L<Plack::Builder> or if you previously used the plugin
L<Catalyst::Plugin::EnableMiddleware> (which is now considered deprecated)
+So basically your middleware handles an incoming request from the first
+registered middleware, down and handles the response from the last middleware
+up.
+
=cut
sub registered_middlewares {
my $class = shift;
if(my $middleware = $class->_psgi_middleware) {
- return (
- Plack::Middleware::HTTPExceptions->new,
- Plack::Middleware::ContentLength->new,
- Plack::Middleware::Head->new,
- @$middleware);
+ my @mw = ($class->default_middleware, @$middleware);
+
+ if($class->config->{using_frontend_proxy}) {
+ push @mw, Plack::Middleware::ReverseProxy->new;
+ }
+
+ return @mw;
} else {
die "You cannot call ->registered_middlewares until middleware has been setup";
}
sub setup_middleware {
my $class = shift;
- my @middleware_definitions = @_ ?
- @_ : reverse(@{$class->config->{'psgi_middleware'}||[]});
+ my @middleware_definitions;
+
+ # If someone calls this method you can add middleware with args. However if its
+ # called without an arg we need to setup the configuration middleware.
+ if(@_) {
+ @middleware_definitions = reverse(@_);
+ } else {
+ @middleware_definitions = reverse(@{$class->config->{'psgi_middleware'}||[]})
+ unless $class->finalized_default_middleware;
+ $class->finalized_default_middleware(1); # Only do this once, just in case some people call setup over and over...
+ }
my @middleware = ();
while(my $next = shift(@middleware_definitions)) {
if(my $data_handlers = $class->_data_handlers) {
return %$data_handlers;
} else {
- die "You cannot call ->registered_data_handlers until data_handers has been setup";
+ $class->setup_data_handlers;
+ return $class->registered_data_handlers;
}
}
->can('build_cgi_struct')->($params);
},
'application/json' => sub {
- Class::Load::load_first_existing_class('JSON::MaybeXS', 'JSON')
- ->can('decode_json')->(do { local $/; $_->getline });
- },
+ my ($fh, $req) = @_;
+ my $parser = Class::Load::load_first_existing_class('JSON::MaybeXS', 'JSON');
+ my $slurped;
+ return eval {
+ local $/;
+ $slurped = $fh->getline;
+ $parser->can("decode_json")->($slurped); # decode_json does utf8 decoding for us
+ } || Catalyst::Exception->throw(sprintf "Error Parsing POST '%s', Error: %s", (defined($slurped) ? $slurped : 'undef') ,$@);
+ },
};
}
+sub _handle_http_exception {
+ my ( $self, $error ) = @_;
+ if (
+ !$self->config->{always_catch_http_exceptions}
+ && blessed $error
+ && (
+ $error->can('as_psgi')
+ || ( $error->can('code')
+ && $error->code =~ m/^[1-5][0-9][0-9]$/ )
+ )
+ )
+ {
+ return 1;
+ }
+}
+
=head2 $c->stack
Returns an arrayref of the internal execution stack (actions that are
=item *
+C<always_catch_http_exceptions> - As of version 5.90060 Catalyst
+rethrows errors conforming to the interface described by
+L<Plack::Middleware::HTTPExceptions> and lets the middleware deal with it.
+Set true to get the deprecated behaviour and have Catalyst catch HTTP exceptions.
+
+=item *
+
C<default_model> - The default model picked if you say C<< $c->model >>. See L<< /$c->model($name) >>.
=item *
=item *
C<use_request_uri_for_path> - Controls if the C<REQUEST_URI> or C<PATH_INFO> environment
-variable should be used for determining the request path.
+variable should be used for determining the request path.
Most web server environments pass the requested path to the application using environment variables,
from which Catalyst has to reconstruct the request base (i.e. the top level path to / in the application,
at other URIs than that which the app is 'normally' based at with C<mod_rewrite>), the resolution of
C<< $c->request->base >> will be incorrect.
-=back
+=back
=item *
=item *
+C<using_frontend_proxy_path> - Enabled L<Plack::Middleware::ReverseProxyPath> on your application (if
+installed, otherwise log an error). This is useful if your application is not running on the
+'root' (or /) of your host server. B<NOTE> if you use this feature you should add the required
+middleware to your project dependency list since its not automatically a dependency of L<Catalyst>.
+This has been done since not all people need this feature and we wish to restrict the growth of
+L<Catalyst> dependencies.
+
+=item *
+
C<encoding> - See L</ENCODING>
+This now defaults to 'UTF-8'. You my turn it off by setting this configuration
+value to undef.
+
=item *
C<abort_chain_on_error_fix>
processing the remaining actions and then catch the error upon chain end. This
can lead to running actions when the application is in an unexpected state. If
you have this issue, setting this config value to true will promptly exit a
-chain when there is an error raised in any action (thus terminating the chain
+chain when there is an error raised in any action (thus terminating the chain
early.)
use like:
=item *
+C<skip_complex_post_part_handling>
+
+When creating body parameters from a POST, if we run into a multpart POST
+that does not contain uploads, but instead contains inlined complex data
+(very uncommon) we cannot reliably convert that into field => value pairs. So
+instead we create an instance of L<Catalyst::Request::PartData>. If this causes
+issue for you, you can disable this by setting C<skip_complex_post_part_handling>
+to true (default is false).
+
+=item *
+
+C<skip_body_param_unicode_decoding>
+
+Generally we decode incoming POST params based on your declared encoding (the
+default for this is to decode UTF-8). If this is causing you trouble and you
+do not wish to turn all encoding support off (with the C<encoding> configuration
+parameter) you may disable this step atomically by setting this configuration
+parameter to true.
+
+=item *
+
+C<do_not_decode_query>
+
+If true, then do not try to character decode any wide characters in your
+request URL query or keywords. Most readings of the relevent specifications
+suggest these should be UTF-* encoded, which is the default that L<Catalyst>
+will use, hwoever if you are creating a lot of URLs manually or have external
+evil clients, this might cause you trouble. If you find the changes introduced
+in Catalyst version 5.90080+ break some of your query code, you may disable
+the UTF-8 decoding globally using this configuration.
+
+This setting takes precedence over C<default_query_encoding> and
+C<decode_query_using_global_encoding>
+
+=item *
+
+C<default_query_encoding>
+
+By default we decode query and keywords in your request URL using UTF-8, which
+is our reading of the relevent specifications. This setting allows one to
+specify a fixed value for how to decode your query. You might need this if
+you are doing a lot of custom encoding of your URLs and not using UTF-8.
+
+This setting take precedence over C<decode_query_using_global_encoding>.
+
+=item *
+
+C<decode_query_using_global_encoding>
+
+Setting this to true will default your query decoding to whatever your
+general global encoding is (the default is UTF-8).
+
+=item *
+
+C<use_chained_args_0_special_case>
+
+In older versions of Catalyst, when more than one action matched the same path
+AND all those matching actions declared Args(0), we'd break the tie by choosing
+the first action defined. We now normalized how Args(0) works so that it
+follows the same rule as Args(N), which is to say when we need to break a tie
+we choose the LAST action defined. If this breaks your code and you don't
+have time to update to follow the new normalized approach, you may set this
+value to true and it will globally revert to the original chaining behavior.
+
+=item *
+
C<psgi_middleware> - See L<PSGI MIDDLEWARE>.
=item *
=back
+=head1 EXCEPTIONS
+
+Generally when you throw an exception inside an Action (or somewhere in
+your stack, such as in a model that an Action is calling) that exception
+is caught by Catalyst and unless you either catch it yourself (via eval
+or something like L<Try::Tiny> or by reviewing the L</error> stack, it
+will eventually reach L</finalize_errors> and return either the debugging
+error stack page, or the default error page. However, if your exception
+can be caught by L<Plack::Middleware::HTTPExceptions>, L<Catalyst> will
+instead rethrow it so that it can be handled by that middleware (which
+is part of the default middleware). For example this would allow
+
+ use HTTP::Throwable::Factory 'http_throw';
+
+ sub throws_exception :Local {
+ my ($self, $c) = @_;
+
+ http_throw(SeeOther => { location =>
+ $c->uri_for($self->action_for('redirect')) });
+
+ }
+
=head1 INTERNAL ACTIONS
Catalyst uses internal actions like C<_DISPATCH>, C<_BEGIN>, C<_AUTO>,
it installed (if you want the faster XS parser, add it to you project Makefile.PL
or dist.ini, cpanfile, etc.)
-The C<data_handlers> configuation is a hashref whose keys are HTTP Content-Types
+The C<data_handlers> configuration is a hashref whose keys are HTTP Content-Types
(matched against the incoming request type using a regexp such as to be case
insensitive) and whose values are coderefs that receive a localized version of
C<$_> which is a filehandle object pointing to received body.
=head1 ENCODING
-On request, decodes all params from encoding into a sequence of
-logical characters. On response, encodes body into encoding.
+Starting in L<Catalyst> version 5.90080 encoding is automatically enabled
+and set to encode all body responses to UTF8 when possible and applicable.
+Following is documentation on this process. If you are using an older
+version of L<Catalyst> you should review documentation for that version since
+a lot has changed.
+
+By default encoding is now 'UTF-8'. You may turn it off by setting
+the encoding configuration to undef.
+
+ MyApp->config(encoding => undef);
+
+This is recommended for temporary backwards compatibility only.
+
+Encoding is automatically applied when the content-type is set to
+a type that can be encoded. Currently we encode when the content type
+matches the following regular expression:
+
+ $content_type =~ /^text|xml$|javascript$/
+
+Encoding is set on the application, but it is copied to the context object
+so that you can override it on a request basis.
+
+Be default we don't automatically encode 'application/json' since the most
+common approaches to generating this type of response (Either via L<Catalyst::View::JSON>
+or L<Catalyst::Action::REST>) will do so already and we want to avoid double
+encoding issues.
+
+If you are producing JSON response in an unconventional manner (such
+as via a template or manual strings) you should perform the UTF8 encoding
+manually as well such as to conform to the JSON specification.
+
+NOTE: We also examine the value of $c->response->content_encoding. If
+you set this (like for example 'gzip', and manually gzipping the body)
+we assume that you have done all the necessary encoding yourself, since
+we cannot encode the gzipped contents. If you use a plugin like
+L<Catalyst::Plugin::Compress> you need to update to a modern version in order
+to have this function correctly with the new UTF8 encoding code, or you
+can use L<Plack::Middleware::Deflater> or (probably best) do your compression on
+a front end proxy.
=head2 Methods
abraxxa: Alexander Hartmaier <abraxxa@cpan.org>
+andrewalker: André Walker <andre@cpan.org>
+
Andrew Bramble
Andrew Ford E<lt>A.Ford@ford-mason.co.ukE<gt>
Danijel Milicevic C<me@danijel.de>
+davewood: David Schmidt <davewood@cpan.org>
+
David Kamholz E<lt>dkamholz@cpan.orgE<gt>
David Naughton, C<naughton@umn.edu>
Ulf Edvinsson
+vanstyn: Henry Van Styn <vanstyn@cpan.org>
+
Viljo Marrandi C<vilts@yahoo.com>
Will Hawes C<info@whawes.co.uk>
dd070: Dhaval Dhanani <dhaval070@gmail.com>
+Upasana <me@upasana.me>
+
+John Napiorkowski (jnap) <jjnapiork@cpan.org>
+
=head1 COPYRIGHT
-Copyright (c) 2005, the above named PROJECT FOUNDER and CONTRIBUTORS.
+Copyright (c) 2005-2015, the above named PROJECT FOUNDER and CONTRIBUTORS.
=head1 LICENSE
projects / catagits/Catalyst-Runtime.git / blobdiff