/[cwmp]/google/trunk/lib/CWMP/Session.pm
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google/lib/CWMP/Server.pm revision 30 by dpavlin, Mon Jun 18 19:16:28 2007 UTC google/trunk/lib/CWMP/Session.pm revision 118 by dpavlin, Fri Oct 26 15:16:10 2007 UTC
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1  # Dobrica Pavlinusic, <dpavlin@rot13.org> 06/18/07 10:19:50 CEST  # Dobrica Pavlinusic, <dpavlin@rot13.org> 06/18/07 10:19:50 CEST
2  package CWMP::Server;  package CWMP::Session;
3    
4  use strict;  use strict;
5  use warnings;  use warnings;
6    
7  use base qw/HTTP::Server::Simple::CGI Class::Accessor/;  use base qw/Class::Accessor/;
   
8  __PACKAGE__->mk_accessors( qw/  __PACKAGE__->mk_accessors( qw/
9  debug  debug
10  / );  store_path
11    
12    sock
13    state
14    queue
15    store
16    / );
17    
18    use HTTP::Daemon;
19  use Data::Dump qw/dump/;  use Data::Dump qw/dump/;
20    use Carp qw/confess cluck croak/;
21    use File::Slurp;
22    
23  sub handler {  use CWMP::Request;
24      my $self = shift;  use CWMP::Response;
25    use CWMP::Store;
26    
27      my $chunk;  =head1 NAME
28    
29          my $transfer_encoding = $self->header('Transfer-Encoding');  CWMP::Session - implement logic of CWMP protocol
30    
31          if ( $transfer_encoding && $transfer_encoding =~ qr/^chunked/i ) {  =head1 METHODS
32    
33                  my $last = 0;  =head2 new
                 do {  
                         my $len = <STDIN>;  
                         $len =~ s/[\n\r]*$//s;  
                         $len = hex( $len );  
34    
35                          $last = 1 if ( $len == 0 );    my $server = CWMP::Session->new({
36            sock => $io_socket_object,
37            store_path => 'state.db',
38            queue => [ qw/GetRPCMethods GetParameterNames/ ],
39            debug => 1,
40      });
41    
42                          warn "getting chunk of $len bytes\n";  =cut
43    
44                          while( $len > 0 ) {  sub new {
45                                  my $line = <STDIN>;          my $class = shift;
46                                  $chunk .= $line;          my $self = $class->SUPER::new( @_ );
                                 $len -= length( $line );  
                         }  
47    
48                  } while ( ! $last );          confess "need sock" unless $self->sock;
         }  
49    
50          warn "chunk (", length($chunk), " bytes)\n------>>\n$chunk\n<<-----\n";          $self->debug( 0 ) unless $self->debug;
51    
52      my $cgi  = new CGI( $chunk );          warn "created ", __PACKAGE__, "(", dump( @_ ), ") for ", $self->sock->peerhost, "\n" if $self->debug;
53    
54      eval { $self->handle_request($cgi) };          $self->store( CWMP::Store->new({
55      if ($@) {                  debug => $self->debug,
56          my $error = $@;                  path => $self->store_path,
57          warn $error;          }) );
58      }  
59            croak "can't open ", $self->store_path, ": $!" unless $self->store;
60    
61            return $self;
62  }  }
63    
64  sub handle_request {  =head2 process_request
65          my ($self, $cgi) = @_;  
66                                                                        One request from client/response from server cycle. Call multiple times to
67          #... do something, print output to default  facilitate brain-dead concept of adding state to stateless protocol like
68          # selected filehandle...  HTTP.
69    
70    If used with debugging level of 3 or more, it will also create dumps of
71    requests named C<< dump/nr.request >> where C<nr> is number from 0 to total number
72    of requests in single session.
73    
74    =cut
75    
76    my $dump_nr = 0;
77    
78    sub process_request {
79            my $self = shift;
80    
81            my $sock = $self->sock || die "no sock?";
82    
83    #       die "not IO::Socket::INET but ", ref( $sock ) unless ( ref($sock) eq 'Net::Server::Proto::TCP' );
84    
85            if ( ! $sock->connected ) {
86                    warn "SOCKET NOT CONNECTED\n";
87                    return 0;
88            }
89    
90            bless $sock, 'HTTP::Daemon::ClientConn';
91    
92            # why do I have to do this?
93            # solution from http://use.perl.org/~Matts/journal/12896
94            ${*$sock}{'httpd_daemon'} = HTTP::Daemon->new;
95    
96            my $r = $sock->get_request || confess "can't get_request";
97    
98            my $chunk = $r->content;
99    
100            my $size = length( $chunk );
101    
102            warn "<<<< ", $sock->peerhost, " [" . localtime() . "] ", $r->method, " ", $r->uri, " $size bytes\n";
103    
104            if ( $self->debug > 2 ) {
105                    my $file = sprintf("dump/%04d.request", $dump_nr++);
106                    write_file( $file, $r->as_string );
107                    warn "### request dump: $file\n";
108            }
109    
110            my $state;
111    
112            if ( $size > 0 ) {
113    
114                    die "no SOAPAction header in ",dump($chunk) unless defined ( $r->header('SOAPAction') );
115    
116    
117          warn ">> ", $ENV{REMOTE_ADDR}, $/;                  if ( $chunk ) {
118                            warn "## request chunk: ",length($chunk)," bytes\n$chunk\n" if $self->debug;
119    
120          warn "not SOAP request" unless defined ( $cgi->header('SOAPAction') );                          $state = CWMP::Request->parse( $chunk );
121    
122  #       warn $cgi->param('POSTDATA'), dump( $cgi );                          warn "## acquired state = ", dump( $state ), "\n";
123    
124          print "Content-Type: text/xml\r\n\r\n";                          $self->state( $state );
125                            $self->store->update_state( ID => $state->{ID}, $state );
126    
127                    } else {
128                            warn "## empty request\n";
129                    }
130    
131            } else {
132                    $state = $self->state;
133                    warn "last request state = ", dump( $state ), "\n" if $self->debug > 1;
134            }
135    
136    
137            $sock->send(join("\r\n",
138                    'HTTP/1.1 200 OK',
139                    'Content-Type: text/xml; charset="utf-8"',
140                    'Server: AcmeCWMP/42',
141                    'SOAPServer: AcmeCWMP/42'
142            )."\r\n");
143    
144            $sock->send( "Set-Cookie: ID=" . $state->{ID} . "; path=/\r\n" ) if ( $state->{ID} );
145            
146            my $xml = '';
147    
148            if ( my $dispatch = $state->{_dispatch} ) {
149                    $xml = $self->dispatch( $dispatch );
150            } elsif ( $dispatch = shift @{ $self->queue } ) {
151                    $xml = $self->dispatch( $dispatch );
152            } elsif ( $size == 0 ) {
153                    warn ">>> closing connection\n";
154                    return 0;
155            } else {
156                    warn ">>> empty response\n";
157                    $state->{NoMoreRequests} = 1;
158                    $xml = $self->dispatch( 'xml', sub {} );
159            }
160    
161            $sock->send( "Content-Length: " . length( $xml ) . "\r\n\r\n" );
162            $sock->send( $xml ) or die "can't send response";
163    
164            warn ">>>> " . $sock->peerhost . " [" . localtime() . "] sent ", length( $xml )," bytes\n";
165    
166            warn "### request over\n" if $self->debug;
167    
168            return 1;       # next request
169  };  };
170    
171  1;  =head2 dispatch
172    
173      $xml = $self->dispatch('Inform', $response_arguments );
174    
175    If debugging level of 3 or more, it will create dumps of responses named C<< dump/nr.response >>
176    
177    =cut
178    
179    sub dispatch {
180            my $self = shift;
181    
182            my $dispatch = shift || die "no dispatch?";
183    
184            my $response = CWMP::Response->new({ debug => $self->debug });
185    
186            if ( $response->can( $dispatch ) ) {
187                    warn ">>> dispatching to $dispatch\n";
188                    my $xml = $response->$dispatch( $self->state, @_ );
189                    warn "## response payload: ",length($xml)," bytes\n$xml\n" if $self->debug;
190                    if ( $self->debug > 2 ) {
191                            my $file = sprintf("dump/%04d.response", $dump_nr++);
192                            write_file( $file, $xml );
193                            warn "### response dump: $file\n";
194                    }
195                    return $xml;
196            } else {
197                    confess "can't dispatch to $dispatch";
198            }
199    };
200    
201    
202    =head2 error
203    
204      return $self->error( 501, 'System error' );
205    
206    =cut
207    
208    sub error {
209      my ($self, $number, $msg) = @_;
210      $msg ||= 'ERROR';
211      $self->sock->send( "HTTP/1.1 $number $msg\r\n" );
212      warn "Error - $number - $msg\n";
213      return 0;     # close connection
214    }
215    
216    1;
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