[catagits/Catalyst-Runtime.git] / lib / Catalyst / Engine / HTTP.pm

package Catalyst::Engine::HTTP;

use strict;
use base 'Catalyst::Engine::CGI';
use Data::Dump qw(dump);
use Errno 'EWOULDBLOCK';
use HTTP::Date ();
use HTTP::Headers;
use HTTP::Status;
use NEXT;
use Socket;
use IO::Socket::INET ();
use IO::Select       ();

# For PAR
require Catalyst::Engine::HTTP::Restarter;
require Catalyst::Engine::HTTP::Restarter::Watcher;

sub CHUNKSIZE () { 64 * 1024 }

sub DEBUG () { $ENV{CATALYST_HTTP_DEBUG} || 0 }

=head1 NAME

Catalyst::Engine::HTTP - Catalyst HTTP Engine

=head1 SYNOPSIS

A script using the Catalyst::Engine::HTTP module might look like:

    #!/usr/bin/perl -w

    BEGIN {  $ENV{CATALYST_ENGINE} = 'HTTP' }

    use strict;
    use lib '/path/to/MyApp/lib';
    use MyApp;

    MyApp->run;

=head1 DESCRIPTION

This is the Catalyst engine specialized for development and testing.

=head1 METHODS

=head2 $self->finalize_headers($c)

=cut

sub finalize_headers {
    my ( $self, $c ) = @_;
    my $protocol = $c->request->protocol;
    my $status   = $c->response->status;
    my $message  = status_message($status);
    
    my @headers;
    push @headers, "$protocol $status $message";
    
    $c->response->headers->header( Date => HTTP::Date::time2str(time) );
    $c->response->headers->header( Connection => 'close' );
    $c->response->headers->header( Status => $status );
    
    push @headers, $c->response->headers->as_string("\x0D\x0A");
    
    # Buffer the headers so they are sent with the first write() call
    # This reduces the number of TCP packets we are sending
    $self->{_header_buf} = join("\x0D\x0A", @headers, '');
}

=head2 $self->finalize_read($c)

=cut

sub finalize_read {
    my ( $self, $c ) = @_;

    # Never ever remove this, it would result in random length output
    # streams if STDIN eq STDOUT (like in the HTTP engine)
    *STDIN->blocking(1);

    return $self->NEXT::finalize_read($c);
}

=head2 $self->prepare_read($c)

=cut

sub prepare_read {
    my ( $self, $c ) = @_;

    # Set the input handle to non-blocking
    *STDIN->blocking(0);

    return $self->NEXT::prepare_read($c);
}

=head2 $self->read_chunk($c, $buffer, $length)

=cut

sub read_chunk {
    my $self = shift;
    my $c    = shift;
    
    # If we have any remaining data in the input buffer, send it back first
    if ( $_[0] = delete $self->{inputbuf} ) {
        my $read = length( $_[0] );
        DEBUG && warn "read_chunk: Read $read bytes from previous input buffer\n";
        return $read;
    }

    # support for non-blocking IO
    my $rin = '';
    vec( $rin, *STDIN->fileno, 1 ) = 1;

  READ:
    {
        select( $rin, undef, undef, undef );
        my $rc = *STDIN->sysread(@_);
        if ( defined $rc ) {
            DEBUG && warn "read_chunk: Read $rc bytes from socket\n";
            return $rc;
        }
        else {
            next READ if $! == EWOULDBLOCK;
            return;
        }
    }
}

=head2 $self->write($c, $buffer)

Writes the buffer to the client. Can only be called once for a request.

=cut

sub write {
    my ( $self, $c, $buffer ) = @_;
    
	# Avoid 'print() on closed filehandle Remote' warnings when using IE
	return unless *STDOUT->opened();
	
	my $ret;
	
	# Prepend the headers if they have not yet been sent
	if ( my $headers = delete $self->{_header_buf} ) {
	    DEBUG && warn "write: Wrote headers and first chunk (" . length($headers . $buffer) . " bytes)\n";
	    $ret = $self->NEXT::write( $c, $headers . $buffer );
    }
    else {
        DEBUG && warn "write: Wrote chunk (" . length($buffer) . " bytes)\n";
        $ret = $self->NEXT::write( $c, $buffer );
    }
    
    if ( !$ret ) {
        $self->{_write_error} = $!;
    }
    
    return $ret;
}

=head2 run

=cut

# A very very simple HTTP server that initializes a CGI environment
sub run {
    my ( $self, $class, $port, $host, $options ) = @_;

    $options ||= {};

    if ($options->{background}) {
        my $child = fork;
        die "Can't fork: $!" unless defined($child);
        exit if $child;
    }

    my $restart = 0;
    local $SIG{CHLD} = 'IGNORE';

    my $allowed = $options->{allowed} || { '127.0.0.1' => '255.255.255.255' };
    my $addr = $host ? inet_aton($host) : INADDR_ANY;
    if ( $addr eq INADDR_ANY ) {
        require Sys::Hostname;
        $host = lc Sys::Hostname::hostname();
    }
    else {
        $host = gethostbyaddr( $addr, AF_INET ) || inet_ntoa($addr);
    }

    # Handle requests

    # Setup socket
    my $daemon = IO::Socket::INET->new(
        Listen    => SOMAXCONN,
        LocalAddr => inet_ntoa($addr),
        LocalPort => $port,
        Proto     => 'tcp',
        ReuseAddr => 1,
        Type      => SOCK_STREAM,
      )
      or die "Couldn't create daemon: $!";

    my $url = "http://$host";
    $url .= ":$port" unless $port == 80;

    print "You can connect to your server at $url\n";

    if ($options->{background}) {
        open STDIN,  "+</dev/null" or die $!;
        open STDOUT, ">&STDIN"     or die $!;
        open STDERR, ">&STDIN"     or die $!;
        if ( $^O !~ /MSWin32/ ) {
             require POSIX;
             POSIX::setsid()
                 or die "Can't start a new session: $!";
        }
    }

    if (my $pidfile = $options->{pidfile}) {
        if (! open PIDFILE, "> $pidfile") {
            warn("Cannot open: $pidfile: $!");
        }
        print PIDFILE "$$\n";
        close PIDFILE;
    }

    my $pid = undef;
    
    # Ignore broken pipes as an HTTP server should
    local $SIG{PIPE} = 'IGNORE';
    
    LISTEN:
    while ( !$restart ) {
        while ( accept( Remote, $daemon ) ) {        
            DEBUG && warn "New connection\n";

            select Remote;

            Remote->blocking(1);
        
            # Read until we see a newline
            $self->{inputbuf} = '';
        
            while (1) {
                my $read = sysread Remote, my $buf, CHUNKSIZE;
            
                if ( !$read ) {
                    DEBUG && warn "EOF or error: $!\n";
                    next LISTEN;
                }
            
                DEBUG && warn "Read $read bytes\n";
                $self->{inputbuf} .= $buf;
                last if $self->{inputbuf} =~ /(\x0D\x0A?|\x0A\x0D?)/s;
            }

            my ( $method, $uri, $protocol ) = $self->_parse_request_line;
        
            DEBUG && warn "Parsed request: $method $uri $protocol\n";
        
            next unless $method;

            unless ( uc($method) eq 'RESTART' ) {

                # Fork
                if ( $options->{fork} ) { next if $pid = fork }

                $self->_handler( $class, $port, $method, $uri, $protocol );
            
                if ( my $error = delete $self->{_write_error} ) {
                    DEBUG && warn "Write error: $error\n";
                    close Remote;
                    next LISTEN;
                }

                $daemon->close if defined $pid;
            }
            else {
                my $sockdata = $self->_socket_data( \*Remote );
                my $ipaddr   = _inet_addr( $sockdata->{peeraddr} );
                my $ready    = 0;
                foreach my $ip ( keys %$allowed ) {
                    my $mask = $allowed->{$ip};
                    $ready = ( $ipaddr & _inet_addr($mask) ) == _inet_addr($ip);
                    last if $ready;
                }
                if ($ready) {
                    $restart = 1;
                    last;
                }
            }

            exit if defined $pid;
        }
        continue {
            close Remote;
        }
    }
    
    $daemon->close;
    
    DEBUG && warn "Shutting down\n";

    if ($restart) {
        $SIG{CHLD} = 'DEFAULT';
        wait;

        ### if the standalone server was invoked with perl -I .. we will loose
        ### those include dirs upon re-exec. So add them to PERL5LIB, so they
        ### are available again for the exec'ed process --kane
        use Config;
        $ENV{PERL5LIB} .= join $Config{path_sep}, @INC; 
        
        exec $^X . ' "' . $0 . '" ' . join( ' ', @{ $options->{argv} } );
    }

    exit;
}

sub _handler {
    my ( $self, $class, $port, $method, $uri, $protocol ) = @_;

    local *STDIN  = \*Remote;
    local *STDOUT = \*Remote;

    # We better be careful and just use 1.0
    $protocol = '1.0';

    my $sockdata    = $self->_socket_data( \*Remote );
    my %copy_of_env = %ENV;

    my $sel = IO::Select->new;
    $sel->add( \*STDIN );

    my ( $path, $query_string ) = split /\?/, $uri, 2;

    # Initialize CGI environment
    local %ENV = (
        PATH_INFO       => $path         || '',
        QUERY_STRING    => $query_string || '',
        REMOTE_ADDR     => $sockdata->{peeraddr},
        REMOTE_HOST     => $sockdata->{peername},
        REQUEST_METHOD  => $method || '',
        SERVER_NAME     => $sockdata->{localname},
        SERVER_PORT     => $port,
        SERVER_PROTOCOL => "HTTP/$protocol",
        %copy_of_env,
    );

    # Parse headers
    if ( $protocol >= 1 ) {
        $self->_parse_headers;
    }

    # Pass flow control to Catalyst
    $class->handle_request;
    
    DEBUG && warn "Request done\n";
    
    # XXX: We used to have a hack for keep-alive here but keep-alive
    # has no place in a single-tasking server like this.  Use HTTP::POE
    # if you want keep-alive.

    close Remote;
}

sub _parse_request_line {
    my $self = shift;

    # Parse request line    
    if ( $self->{inputbuf} !~ s/^(\w+)[ \t]+(\S+)(?:[ \t]+(HTTP\/\d+\.\d+))?[^\012]*\012// ) {
        return ();
    }
    
    my $method = $1;
    my $uri    = $2;
    my $proto  = $3 || 'HTTP/0.9';
    
    return ( $method, $uri, $proto );
}

sub _parse_headers {
    my $self = shift;
    
    # Copy the buffer for header parsing, and remove the header block
    # from the content buffer.
    my $buf = $self->{inputbuf};
    $self->{inputbuf} =~ s/.*?(\x0D\x0A?\x0D\x0A?|\x0A\x0D?\x0A\x0D?)//s;
    
    # Parse headers
    my $headers = HTTP::Headers->new;
    my ($key, $val);
    HEADER:
    while ( $buf =~ s/^([^\012]*)\012// ) {
        $_ = $1;
        s/\015$//;
        if ( /^([\w\-~]+)\s*:\s*(.*)/ ) {
            $headers->push_header( $key, $val ) if $key;
            ($key, $val) = ($1, $2);
        }
        elsif ( /^\s+(.*)/ ) {
            $val .= " $1";
        }
        else {
            last HEADER;
        }
    }
    $headers->push_header( $key, $val ) if $key;
    
    DEBUG && warn "Parsed headers: " . dump($headers) . "\n";

    # Convert headers into ENV vars
    $headers->scan( sub {
        my ( $key, $val ) = @_;
        
        $key = uc $key;
        $key = 'COOKIE' if $key eq 'COOKIES';
        $key =~ tr/-/_/;
        $key = 'HTTP_' . $key
            unless $key =~ m/\A(?:CONTENT_(?:LENGTH|TYPE)|COOKIE)\z/;
            
        if ( exists $ENV{$key} ) {
            $ENV{$key} .= ", $val";
        }
        else {
            $ENV{$key} = $val;
        }
    } );
}

sub _socket_data {
    my ( $self, $handle ) = @_;

    my $remote_sockaddr       = getpeername($handle);
    my ( undef, $iaddr )      = $remote_sockaddr 
        ? sockaddr_in($remote_sockaddr) 
        : (undef, undef);
        
    my $local_sockaddr        = getsockname($handle);
    my ( undef, $localiaddr ) = sockaddr_in($local_sockaddr);

    # This mess is necessary to keep IE from crashing the server
    my $data = {
        peername  => $iaddr 
            ? ( gethostbyaddr( $iaddr, AF_INET ) || 'localhost' )
            : 'localhost',
        peeraddr  => $iaddr 
            ? ( inet_ntoa($iaddr) || '127.0.0.1' )
            : '127.0.0.1',
        localname => gethostbyaddr( $localiaddr, AF_INET ) || 'localhost',
        localaddr => inet_ntoa($localiaddr) || '127.0.0.1',
    };

    return $data;
}

sub _inet_addr { unpack "N*", inet_aton( $_[0] ) }

=head1 SEE ALSO

L<Catalyst>, L<Catalyst::Engine>.

=head1 AUTHORS

Sebastian Riedel, <sri@cpan.org>

Dan Kubb, <dan.kubb-cpan@onautopilot.com>

Sascha Kiefer, <esskar@cpan.org>

Andy Grundman, <andy@hybridized.org>

=head1 THANKS

Many parts are ripped out of C<HTTP::Server::Simple> by Jesse Vincent.

=head1 COPYRIGHT

This program is free software, you can redistribute it and/or modify it under
the same terms as Perl itself.

=cut

1;
Commit	Line	Data
ca61af20	1	package Catalyst::Engine::HTTP;
45374ac6	2
45374ac6	3	use strict;
fbcc39ad	4	use base 'Catalyst::Engine::CGI';
4bb8bd62	5	use Data::Dump qw(dump);
fbcc39ad	6	use Errno 'EWOULDBLOCK';
055ff026	7	use HTTP::Date ();
4bb8bd62	8	use HTTP::Headers;
fbcc39ad	9	use HTTP::Status;
	10	use NEXT;
	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
4bb8bd62	19	sub CHUNKSIZE () { 64 * 1024 }
	20
	21	sub DEBUG () { $ENV{CATALYST_HTTP_DEBUG} \|\| 0 }
	22
45374ac6	23	=head1 NAME
45374ac6	24
ca61af20	25	Catalyst::Engine::HTTP - Catalyst HTTP Engine
45374ac6	26
	27	=head1 SYNOPSIS
	28
ca61af20	29	A script using the Catalyst::Engine::HTTP module might look like:
45374ac6	30
	31	#!/usr/bin/perl -w
	32
ca61af20	33	BEGIN { $ENV{CATALYST_ENGINE} = 'HTTP' }
45374ac6	34
	35	use strict;
	36	use lib '/path/to/MyApp/lib';
	37	use MyApp;
	38
	39	MyApp->run;
	40
	41	=head1 DESCRIPTION
	42
	43	This is the Catalyst engine specialized for development and testing.
	44
fbcc39ad	45	=head1 METHODS
fbcc39ad	46
b5ecfcf0	47	=head2 $self->finalize_headers($c)
fbcc39ad	48
	49	=cut
	50
	51	sub finalize_headers {
	52	my ( $self, $c ) = @_;
	53	my $protocol = $c->request->protocol;
	54	my $status = $c->response->status;
	55	my $message = status_message($status);
055ff026	56
4bb8bd62	57	my @headers;
4bb8bd62	58	push @headers, "$protocol $status $message";
055ff026	59
055ff026	60	$c->response->headers->header( Date => HTTP::Date::time2str(time) );
4bb8bd62	61	$c->response->headers->header( Connection => 'close' );
055ff026	62	$c->response->headers->header( Status => $status );
4bb8bd62	63
	64	push @headers, $c->response->headers->as_string("\x0D\x0A");
	65
	66	# Buffer the headers so they are sent with the first write() call
	67	# This reduces the number of TCP packets we are sending
	68	$self->{_header_buf} = join("\x0D\x0A", @headers, '');
fbcc39ad	69	}
fbcc39ad	70
b5ecfcf0	71	=head2 $self->finalize_read($c)
fbcc39ad	72
	73	=cut
	74
	75	sub finalize_read {
	76	my ( $self, $c ) = @_;
	77
	78	# Never ever remove this, it would result in random length output
	79	# streams if STDIN eq STDOUT (like in the HTTP engine)
4f5ebacd	80	*STDIN->blocking(1);
fbcc39ad	81
	82	return $self->NEXT::finalize_read($c);
	83	}
	84
b5ecfcf0	85	=head2 $self->prepare_read($c)
fbcc39ad	86
	87	=cut
	88
	89	sub prepare_read {
	90	my ( $self, $c ) = @_;
	91
	92	# Set the input handle to non-blocking
4f5ebacd	93	*STDIN->blocking(0);
fbcc39ad	94
	95	return $self->NEXT::prepare_read($c);
	96	}
	97
b5ecfcf0	98	=head2 $self->read_chunk($c, $buffer, $length)
fbcc39ad	99
	100	=cut
	101
	102	sub read_chunk {
	103	my $self = shift;
	104	my $c = shift;
4bb8bd62	105
	106	# If we have any remaining data in the input buffer, send it back first
	107	if ( $_[0] = delete $self->{inputbuf} ) {
	108	my $read = length( $_[0] );
	109	DEBUG && warn "read_chunk: Read $read bytes from previous input buffer\n";
	110	return $read;
	111	}
fbcc39ad	112
fbcc39ad	113	# support for non-blocking IO
4f5ebacd	114	my $rin = '';
4f5ebacd	115	vec( $rin, *STDIN->fileno, 1 ) = 1;
fbcc39ad	116
	117	READ:
	118	{
	119	select( $rin, undef, undef, undef );
4f5ebacd	120	my $rc = *STDIN->sysread(@_);
fbcc39ad	121	if ( defined $rc ) {
4bb8bd62	122	DEBUG && warn "read_chunk: Read $rc bytes from socket\n";
fbcc39ad	123	return $rc;
	124	}
	125	else {
	126	next READ if $! == EWOULDBLOCK;
	127	return;
	128	}
	129	}
	130	}
	131
00c99324	132	=head2 $self->write($c, $buffer)
	133
	134	Writes the buffer to the client. Can only be called once for a request.
	135
	136	=cut
	137
	138	sub write {
4bb8bd62	139	my ( $self, $c, $buffer ) = @_;
4bb8bd62	140
00c99324	141	# Avoid 'print() on closed filehandle Remote' warnings when using IE
	142	return unless *STDOUT->opened();
	143
4bb8bd62	144	my $ret;
	145
	146	# Prepend the headers if they have not yet been sent
	147	if ( my $headers = delete $self->{_header_buf} ) {
	148	DEBUG && warn "write: Wrote headers and first chunk (" . length($headers . $buffer) . " bytes)\n";
	149	$ret = $self->NEXT::write( $c, $headers . $buffer );
	150	}
	151	else {
	152	DEBUG && warn "write: Wrote chunk (" . length($buffer) . " bytes)\n";
	153	$ret = $self->NEXT::write( $c, $buffer );
	154	}
	155
	156	if ( !$ret ) {
	157	$self->{_write_error} = $!;
	158	}
	159
	160	return $ret;
00c99324	161	}
00c99324	162
b5ecfcf0	163	=head2 run
fbcc39ad	164
	165	=cut
	166
	167	# A very very simple HTTP server that initializes a CGI environment
	168	sub run {
37553dc8	169	my ( $self, $class, $port, $host, $options ) = @_;
fbcc39ad	170
4eeca0f2	171	$options \|\|= {};
1cf1c56a	172
e1576f62	173	if ($options->{background}) {
	174	my $child = fork;
	175	die "Can't fork: $!" unless defined($child);
	176	exit if $child;
	177	}
	178
57a87bb3	179	my $restart = 0;
31b426c0	180	local $SIG{CHLD} = 'IGNORE';
fbcc39ad	181
1cf1c56a	182	my $allowed = $options->{allowed} \|\| { '127.0.0.1' => '255.255.255.255' };
6c7a1d2f	183	my $addr = $host ? inet_aton($host) : INADDR_ANY;
6c7a1d2f	184	if ( $addr eq INADDR_ANY ) {
fbcc39ad	185	require Sys::Hostname;
6c7a1d2f	186	$host = lc Sys::Hostname::hostname();
fbcc39ad	187	}
fbcc39ad	188	else {
6c7a1d2f	189	$host = gethostbyaddr( $addr, AF_INET ) \|\| inet_ntoa($addr);
fbcc39ad	190	}
6c7a1d2f	191
	192	# Handle requests
	193
	194	# Setup socket
	195	my $daemon = IO::Socket::INET->new(
	196	Listen => SOMAXCONN,
	197	LocalAddr => inet_ntoa($addr),
	198	LocalPort => $port,
	199	Proto => 'tcp',
	200	ReuseAddr => 1,
	201	Type => SOCK_STREAM,
	202	)
	203	or die "Couldn't create daemon: $!";
	204
	205	my $url = "http://$host";
	206	$url .= ":$port" unless $port == 80;
	207
fbcc39ad	208	print "You can connect to your server at $url\n";
fbcc39ad	209
e1576f62	210	if ($options->{background}) {
	211	open STDIN, "+</dev/null" or die $!;
	212	open STDOUT, ">&STDIN" or die $!;
	213	open STDERR, ">&STDIN" or die $!;
	214	if ( $^O !~ /MSWin32/ ) {
	215	require POSIX;
	216	POSIX::setsid()
	217	or die "Can't start a new session: $!";
	218	}
	219	}
	220
	221	if (my $pidfile = $options->{pidfile}) {
	222	if (! open PIDFILE, "> $pidfile") {
	223	warn("Cannot open: $pidfile: $!");
	224	}
	225	print PIDFILE "$$\n";
	226	close PIDFILE;
	227	}
	228
4bb8bd62	229	my $pid = undef;
	230
	231	# Ignore broken pipes as an HTTP server should
	232	local $SIG{PIPE} = 'IGNORE';
	233
	234	LISTEN:
	235	while ( !$restart ) {
	236	while ( accept( Remote, $daemon ) ) {
	237	DEBUG && warn "New connection\n";
fbcc39ad	238
4bb8bd62	239	select Remote;
fbcc39ad	240
4bb8bd62	241	Remote->blocking(1);
	242
	243	# Read until we see a newline
	244	$self->{inputbuf} = '';
	245
	246	while (1) {
	247	my $read = sysread Remote, my $buf, CHUNKSIZE;
	248
	249	if ( !$read ) {
	250	DEBUG && warn "EOF or error: $!\n";
	251	next LISTEN;
	252	}
	253
	254	DEBUG && warn "Read $read bytes\n";
	255	$self->{inputbuf} .= $buf;
	256	last if $self->{inputbuf} =~ /(\x0D\x0A?\|\x0A\x0D?)/s;
	257	}
fbcc39ad	258
4bb8bd62	259	my ( $method, $uri, $protocol ) = $self->_parse_request_line;
	260
	261	DEBUG && warn "Parsed request: $method $uri $protocol\n";
	262
	263	next unless $method;
57a87bb3	264
4bb8bd62	265	unless ( uc($method) eq 'RESTART' ) {
57a87bb3	266
4bb8bd62	267	# Fork
4bb8bd62	268	if ( $options->{fork} ) { next if $pid = fork }
6c7a1d2f	269
4bb8bd62	270	$self->_handler( $class, $port, $method, $uri, $protocol );
	271
	272	if ( my $error = delete $self->{_write_error} ) {
	273	DEBUG && warn "Write error: $error\n";
	274	close Remote;
	275	next LISTEN;
	276	}
fbcc39ad	277
4bb8bd62	278	$daemon->close if defined $pid;
1cf1c56a	279	}
4bb8bd62	280	else {
	281	my $sockdata = $self->_socket_data( \*Remote );
	282	my $ipaddr = _inet_addr( $sockdata->{peeraddr} );
	283	my $ready = 0;
	284	foreach my $ip ( keys %$allowed ) {
	285	my $mask = $allowed->{$ip};
	286	$ready = ( $ipaddr & _inet_addr($mask) ) == _inet_addr($ip);
	287	last if $ready;
	288	}
	289	if ($ready) {
	290	$restart = 1;
	291	last;
	292	}
1cf1c56a	293	}
57a87bb3	294
4bb8bd62	295	exit if defined $pid;
	296	}
	297	continue {
	298	close Remote;
	299	}
fbcc39ad	300	}
4bb8bd62	301
6c7a1d2f	302	$daemon->close;
4bb8bd62	303
4bb8bd62	304	DEBUG && warn "Shutting down\n";
37553dc8	305
57a87bb3	306	if ($restart) {
60c38e3e	307	$SIG{CHLD} = 'DEFAULT';
6844bc1c	308	wait;
e37e3977	309
	310	### if the standalone server was invoked with perl -I .. we will loose
	311	### those include dirs upon re-exec. So add them to PERL5LIB, so they
	312	### are available again for the exec'ed process --kane
	313	use Config;
	314	$ENV{PERL5LIB} .= join $Config{path_sep}, @INC;
	315
1cf1c56a	316	exec $^X . ' "' . $0 . '" ' . join( ' ', @{ $options->{argv} } );
60c38e3e	317	}
57a87bb3	318
57a87bb3	319	exit;
fbcc39ad	320	}
fbcc39ad	321
6c7a1d2f	322	sub _handler {
	323	my ( $self, $class, $port, $method, $uri, $protocol ) = @_;
	324
6c7a1d2f	325	local STDIN = \Remote;
	326	local STDOUT = \Remote;
	327
	328	# We better be careful and just use 1.0
	329	$protocol = '1.0';
	330
	331	my $sockdata = $self->_socket_data( \*Remote );
	332	my %copy_of_env = %ENV;
	333
	334	my $sel = IO::Select->new;
	335	$sel->add( \*STDIN );
	336
4bb8bd62	337	my ( $path, $query_string ) = split /\?/, $uri, 2;
	338
	339	# Initialize CGI environment
	340	local %ENV = (
	341	PATH_INFO => $path \|\| '',
	342	QUERY_STRING => $query_string \|\| '',
	343	REMOTE_ADDR => $sockdata->{peeraddr},
	344	REMOTE_HOST => $sockdata->{peername},
	345	REQUEST_METHOD => $method \|\| '',
	346	SERVER_NAME => $sockdata->{localname},
	347	SERVER_PORT => $port,
	348	SERVER_PROTOCOL => "HTTP/$protocol",
	349	%copy_of_env,
	350	);
	351
	352	# Parse headers
	353	if ( $protocol >= 1 ) {
	354	$self->_parse_headers;
6c7a1d2f	355	}
6c7a1d2f	356
4bb8bd62	357	# Pass flow control to Catalyst
	358	$class->handle_request;
	359
	360	DEBUG && warn "Request done\n";
	361
	362	# XXX: We used to have a hack for keep-alive here but keep-alive
	363	# has no place in a single-tasking server like this. Use HTTP::POE
	364	# if you want keep-alive.
	365
6c7a1d2f	366	close Remote;
	367	}
	368
4bb8bd62	369	sub _parse_request_line {
4bb8bd62	370	my $self = shift;
6c7a1d2f	371
4bb8bd62	372	# Parse request line
	373	if ( $self->{inputbuf} !~ s/^(\w+)[ \t]+(\S+)(?:[ \t]+(HTTP\/\d+\.\d+))?[^\012]*\012// ) {
	374	return ();
	375	}
	376
	377	my $method = $1;
	378	my $uri = $2;
	379	my $proto = $3 \|\| 'HTTP/0.9';
	380
	381	return ( $method, $uri, $proto );
6c7a1d2f	382	}
6c7a1d2f	383
4bb8bd62	384	sub _parse_headers {
	385	my $self = shift;
	386
	387	# Copy the buffer for header parsing, and remove the header block
	388	# from the content buffer.
	389	my $buf = $self->{inputbuf};
	390	$self->{inputbuf} =~ s/.*?(\x0D\x0A?\x0D\x0A?\|\x0A\x0D?\x0A\x0D?)//s;
	391
	392	# Parse headers
	393	my $headers = HTTP::Headers->new;
	394	my ($key, $val);
	395	HEADER:
	396	while ( $buf =~ s/^([^\012]*)\012// ) {
	397	$_ = $1;
	398	s/\015$//;
	399	if ( /^([\w\-~]+)\s:\s(.*)/ ) {
	400	$headers->push_header( $key, $val ) if $key;
	401	($key, $val) = ($1, $2);
	402	}
	403	elsif ( /^\s+(.*)/ ) {
	404	$val .= " $1";
	405	}
	406	else {
	407	last HEADER;
	408	}
	409	}
	410	$headers->push_header( $key, $val ) if $key;
	411
	412	DEBUG && warn "Parsed headers: " . dump($headers) . "\n";
6c7a1d2f	413
4bb8bd62	414	# Convert headers into ENV vars
	415	$headers->scan( sub {
	416	my ( $key, $val ) = @_;
	417
	418	$key = uc $key;
	419	$key = 'COOKIE' if $key eq 'COOKIES';
	420	$key =~ tr/-/_/;
	421	$key = 'HTTP_' . $key
	422	unless $key =~ m/\A(?:CONTENT_(?:LENGTH\|TYPE)\|COOKIE)\z/;
	423
	424	if ( exists $ENV{$key} ) {
	425	$ENV{$key} .= ", $val";
	426	}
	427	else {
	428	$ENV{$key} = $val;
	429	}
	430	} );
6c7a1d2f	431	}
	432
	433	sub _socket_data {
	434	my ( $self, $handle ) = @_;
	435
8b9d0298	436	my $remote_sockaddr = getpeername($handle);
3150d774	437	my ( undef, $iaddr ) = $remote_sockaddr
	438	? sockaddr_in($remote_sockaddr)
	439	: (undef, undef);
	440
8b9d0298	441	my $local_sockaddr = getsockname($handle);
6c7a1d2f	442	my ( undef, $localiaddr ) = sockaddr_in($local_sockaddr);
6c7a1d2f	443
8b9d0298	444	# This mess is necessary to keep IE from crashing the server
6c7a1d2f	445	my $data = {
8b9d0298	446	peername => $iaddr
	447	? ( gethostbyaddr( $iaddr, AF_INET ) \|\| 'localhost' )
	448	: 'localhost',
	449	peeraddr => $iaddr
	450	? ( inet_ntoa($iaddr) \|\| '127.0.0.1' )
	451	: '127.0.0.1',
	452	localname => gethostbyaddr( $localiaddr, AF_INET ) \|\| 'localhost',
	453	localaddr => inet_ntoa($localiaddr) \|\| '127.0.0.1',
6c7a1d2f	454	};
	455
	456	return $data;
	457	}
	458
1cf1c56a	459	sub _inet_addr { unpack "N*", inet_aton( $_[0] ) }
1cf1c56a	460
45374ac6	461	=head1 SEE ALSO
45374ac6	462
fbcc39ad	463	L<Catalyst>, L<Catalyst::Engine>.
	464
	465	=head1 AUTHORS
	466
	467	Sebastian Riedel, <sri@cpan.org>
	468
	469	Dan Kubb, <dan.kubb-cpan@onautopilot.com>
45374ac6	470
6c7a1d2f	471	Sascha Kiefer, <esskar@cpan.org>
6c7a1d2f	472
4bb8bd62	473	Andy Grundman, <andy@hybridized.org>
4bb8bd62	474
fbcc39ad	475	=head1 THANKS
45374ac6	476
fbcc39ad	477	Many parts are ripped out of C<HTTP::Server::Simple> by Jesse Vincent.
45374ac6	478
	479	=head1 COPYRIGHT
	480
	481	This program is free software, you can redistribute it and/or modify it under
	482	the same terms as Perl itself.
	483
	484	=cut
	485
45374ac6	486	1;