/[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 170 by dpavlin, Sun Oct 28 13:05:01 2007 UTC
# Line 1  Line 1 
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
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 => 'state.db',
38            queue => [
39                    'GetRPCMethods',
40                    [ 'GetParameterValyes', 'InternetGatewayDevice.DeviceInfo.SerialNumber', 0 ],
41            ],
42            debug => 1,
43      });
44    
45                          warn "getting chunk of $len bytes\n";  =cut
46    
47                          while( $len > 0 ) {  sub new {
48                                  my $line = <STDIN>;          my $class = shift;
49                                  $chunk .= $line;          my $self = $class->SUPER::new( @_ );
                                 $len -= length( $line );  
                         }  
50    
51                  } while ( ! $last );          confess "need sock" unless $self->sock;
52          }  
53            $self->debug( 0 ) unless $self->debug;
54    
55            warn "created ", __PACKAGE__, "(", dump( @_ ), ") for ", $self->sock->peerhost, "\n" if $self->debug;
56    
57            my $store_obj = CWMP::Store->new({
58                    debug => $self->debug,
59                    %{ $self->store },
60            });
61    
62          warn "chunk (", length($chunk), " bytes)\n------>>\n$chunk\n<<-----\n";          croak "can't open ", dump( $self->store ), ": $!" unless $store_obj;
63    
64      my $cgi  = new CGI( $chunk );          # FIXME looks ugly. Should we have separate accessor for this?
65            $self->store( $store_obj );
66    
67      eval { $self->handle_request($cgi) };          return $self;
     if ($@) {  
         my $error = $@;  
         warn $error;  
     }  
68  }  }
69    
70  sub handle_request {  =head2 process_request
71          my ($self, $cgi) = @_;  
72                                                                        One request from client/response from server cycle. Call multiple times to
73          #... do something, print output to default  facilitate brain-dead concept of adding state to stateless protocol like
74          # selected filehandle...  HTTP.
75    
76    If used with debugging level of 3 or more, it will also create dumps of
77    requests named C<< dump/nr.request >> where C<nr> is number from 0 to total number
78    of requests in single session.
79    
80    =cut
81    
82    my $dump_nr = 0;
83    
84    sub process_request {
85            my $self = shift;
86    
87            my $sock = $self->sock || die "no sock?";
88    
89    #       die "not IO::Socket::INET but ", ref( $sock ) unless ( ref($sock) eq 'Net::Server::Proto::TCP' );
90    
91            if ( ! $sock->connected ) {
92                    warn "SOCKET NOT CONNECTED\n";
93                    return 0;
94            }
95    
96            bless $sock, 'HTTP::Daemon::ClientConn';
97    
98            # why do I have to do this?
99            # solution from http://use.perl.org/~Matts/journal/12896
100            ${*$sock}{'httpd_daemon'} = HTTP::Daemon->new;
101    
102            my $r = $sock->get_request || confess "can't get_request";
103    
104            my $xml = $r->content;
105    
106            my $size = length( $xml );
107    
108            warn "<<<< ", $sock->peerhost, " [" . localtime() . "] ", $r->method, " ", $r->uri, " $size bytes\n";
109    
110            if ( $self->debug > 2 ) {
111                    my $file = sprintf("dump/%04d-%s.request", $dump_nr++, $sock->peerhost);
112                    write_file( $file, $r->as_string );
113                    warn "### request dumped to file: $file\n";
114            }
115    
116            my $state;
117    
118            if ( $size > 0 ) {
119    
120                    die "no SOAPAction header in ",dump($xml) unless defined ( $r->header('SOAPAction') );
121    
122                    warn "## request payload: ",length($xml)," bytes\n$xml\n" if $self->debug;
123    
124          warn ">> ", $ENV{REMOTE_ADDR}, $/;                  $state = CWMP::Request->parse( $xml );
125    
126          warn "not SOAP request" unless defined ( $cgi->header('SOAPAction') );                  warn "## acquired state = ", dump( $state ), "\n";
127    
128  #       warn $cgi->param('POSTDATA'), dump( $cgi );                  $self->state( $state );
129                    $self->store->update_state( ID => $state->{ID}, $state );
130    
131          print "Content-Type: text/xml\r\n\r\n";          } else {
132    
133                    warn "## empty request, using last request state\n";
134    
135                    $state = $self->state;
136                    delete( $state->{_dispatch} );
137                    #warn "last request state = ", dump( $state ), "\n" if $self->debug > 1;
138            }
139    
140    
141            $sock->send(join("\r\n",
142                    'HTTP/1.1 200 OK',
143                    'Content-Type: text/xml; charset="utf-8"',
144                    'Server: AcmeCWMP/42',
145                    'SOAPServer: AcmeCWMP/42'
146            )."\r\n");
147    
148            $sock->send( "Set-Cookie: ID=" . $state->{ID} . "; path=/\r\n" ) if ( $state->{ID} );
149            
150            $xml = '';
151    
152            if ( my $dispatch = $state->{_dispatch} ) {
153                    $xml = $self->dispatch( $dispatch );
154            } elsif ( $dispatch = shift @{ $self->queue } ) {
155                    $xml = $self->dispatch( $dispatch );
156            } elsif ( $size == 0 ) {
157                    warn ">>> no more queued commands, closing connection\n";
158                    return 0;
159            } else {
160                    warn ">>> empty response\n";
161                    $state->{NoMoreRequests} = 1;
162                    $xml = $self->dispatch( 'xml', sub {} );
163            }
164    
165            $sock->send( "Content-Length: " . length( $xml ) . "\r\n\r\n" );
166            $sock->send( $xml ) or die "can't send response";
167    
168            warn ">>>> " . $sock->peerhost . " [" . localtime() . "] sent ", length( $xml )," bytes\n";
169    
170            warn "### request over\n" if $self->debug;
171    
172            return 1;       # next request
173  };  };
174    
175  1;  =head2 dispatch
176    
177      $xml = $self->dispatch('Inform', $response_arguments );
178    
179    If debugging level of 3 or more, it will create dumps of responses named C<< dump/nr.response >>
180    
181    =cut
182    
183    sub dispatch {
184            my $self = shift;
185    
186            my $dispatch = shift || die "no dispatch?";
187            my @args = @_;
188    
189            if ( ref($dispatch) eq 'ARRAY' ) {
190                    my @a = @$dispatch;
191                    $dispatch = shift @a;
192                    push @args, @a;
193            }
194    
195            my $response = CWMP::Response->new({ debug => $self->debug });
196    
197            if ( $response->can( $dispatch ) ) {
198                    warn ">>> dispatching to $dispatch\n";
199                    my $xml = $response->$dispatch( $self->state, @args );
200                    warn "## response payload: ",length($xml)," bytes\n$xml\n" if $self->debug;
201                    if ( $self->debug > 2 ) {
202                            my $file = sprintf("dump/%04d-%s.response", $dump_nr++, $self->sock->peerhost);
203                            write_file( $file, $xml );
204                            warn "### response dump: $file\n";
205                    }
206                    return $xml;
207            } else {
208                    confess "can't dispatch to $dispatch";
209            }
210    };
211    
212    
213    =head2 error
214    
215      return $self->error( 501, 'System error' );
216    
217    =cut
218    
219    sub error {
220      my ($self, $number, $msg) = @_;
221      $msg ||= 'ERROR';
222      $self->sock->send( "HTTP/1.1 $number $msg\r\n" );
223      warn "Error - $number - $msg\n";
224      return 0;     # close connection
225    }
226    
227    1;
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