lib/CWMP/Server.pm

# Dobrica Pavlinusic, <dpavlin@rot13.org> 06/18/07 10:19:50 CEST
package CWMP::Server;

use strict;
use warnings;

use base qw/HTTP::Server::Simple::CGI Class::Accessor/;
__PACKAGE__->mk_accessors( qw/
debug
/ );

use Data::Dump qw/dump/;
use CWMP::Request;
use CWMP::Response;
use Carp qw/confess/;

=head1 NAME

CWMP::Server - implement logic of CWMP protocol

=head1 METHODS

=head2 handler

We override L<HTTP::Server::Simple::CGI/handler> so that we can support
chunked transfer encoding.

=cut

sub handler {
    my $self = shift;

    my $chunk;

        my $transfer_encoding = $self->header('Transfer-Encoding');

        if ( $transfer_encoding && $transfer_encoding =~ qr/^chunked/i ) {

                my $len = 0;
                my $hex;
                do {
                        $hex = <STDIN>;         # get chunk length
                        $hex =~ s/[\n\r]*$//s;
                        $len = hex( $hex );

                        warn "getting chunk of 0x$hex $len bytes\n" if $self->debug;

                        while( $len > 0 ) {
                                my $line = <STDIN>;
                                $chunk .= $line;
                                $len -= length( $line );
                        }

                } while ( hex( $hex ) != 0 );
        }

        warn "handler got ", length($chunk), " bytes\n" if $self->debug;

    my $cgi  = new CGI( $chunk );

    eval { $self->handle_request($cgi) };
    if ($@) {
        my $error = $@;
        warn $error;
    }
}

=head2 handle_request

Implementation of dispatch logic

=cut

sub handle_request {
        my ($self, $cgi) = @_;
                                                                    
        #... do something, print output to default
        # selected filehandle...

        warn "<<< " . localtime() . " " . $ENV{REMOTE_ADDR} . "\n";

        warn "not SOAP request" unless defined ( $cgi->header('SOAPAction') );

        my $state;

        if ( my $payload = $cgi->param('POSTDATA') ) {
                warn "request payload:\n$payload\n" if $self->debug;

                $state = CWMP::Request->parse( $payload );

                warn "acquired state = ", dump( $state );
        
        } else {
                warn "empty request\n";
        }

        my $response = CWMP::Response->new({ debug => $self->debug });

        print "Content-Type: text/xml\r\n\r\n";

        if ( my $dispatch = $state->{_dispatch} ) {
                if ( $response->can( $dispatch ) ) {
                        warn ">>> dispatching to $dispatch\n";
                        print $response->$dispatch;
                } else {
                        confess "can't dispatch to $dispatch";
                }
        } else {
                warn ">>> empty response\n";
        }
        
};

1;

1	# Dobrica Pavlinusic, <dpavlin@rot13.org> 06/18/07 10:19:50 CEST
2	package CWMP::Server;
3
4	use strict;
5	use warnings;
6
7	use base qw/HTTP::Server::Simple::CGI Class::Accessor/;
8	__PACKAGE__->mk_accessors( qw/
9	debug
10	/ );
11
12	use Data::Dump qw/dump/;
13	use CWMP::Request;
14	use CWMP::Response;
15	use Carp qw/confess/;
16
17	=head1 NAME
18
19	CWMP::Server - implement logic of CWMP protocol
20
21	=head1 METHODS
22
23	=head2 handler
24
25	We override L<HTTP::Server::Simple::CGI/handler> so that we can support
26	chunked transfer encoding.
27
28	=cut
29
30	sub handler {
31	my $self = shift;
32
33	my $chunk;
34
35	my $transfer_encoding = $self->header('Transfer-Encoding');
36
37	if ( $transfer_encoding && $transfer_encoding =~ qr/^chunked/i ) {
38
39	my $len = 0;
40	my $hex;
41	do {
42	$hex = <STDIN>; # get chunk length
43	$hex =~ s/[\n\r]*$//s;
44	$len = hex( $hex );
45
46	warn "getting chunk of 0x$hex $len bytes\n" if $self->debug;
47
48	while( $len > 0 ) {
49	my $line = <STDIN>;
50	$chunk .= $line;
51	$len -= length( $line );
52	}
53
54	} while ( hex( $hex ) != 0 );
55	}
56
57	warn "handler got ", length($chunk), " bytes\n" if $self->debug;
58
59	my $cgi = new CGI( $chunk );
60
61	eval { $self->handle_request($cgi) };
62	if ($@) {
63	my $error = $@;
64	warn $error;
65	}
66	}
67
68	=head2 handle_request
69
70	Implementation of dispatch logic
71
72	=cut
73
74	sub handle_request {
75	my ($self, $cgi) = @_;
76
77	#... do something, print output to default
78	# selected filehandle...
79
80	warn "<<< " . localtime() . " " . $ENV{REMOTE_ADDR} . "\n";
81
82	warn "not SOAP request" unless defined ( $cgi->header('SOAPAction') );
83
84	my $state;
85
86	if ( my $payload = $cgi->param('POSTDATA') ) {
87	warn "request payload:\n$payload\n" if $self->debug;
88
89	$state = CWMP::Request->parse( $payload );
90
91	warn "acquired state = ", dump( $state );
92
93	} else {
94	warn "empty request\n";
95	}
96
97	my $response = CWMP::Response->new({ debug => $self->debug });
98
99	print "Content-Type: text/xml\r\n\r\n";
100
101	if ( my $dispatch = $state->{_dispatch} ) {
102	if ( $response->can( $dispatch ) ) {
103	warn ">>> dispatching to $dispatch\n";
104	print $response->$dispatch;
105	} else {
106	confess "can't dispatch to $dispatch";
107	}
108	} else {
109	warn ">>> empty response\n";
110	}
111
112	};
113
114	1;
115