/[cwmp]/google/trunk/lib/CWMP/Session.pm
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google/lib/CWMP/Server.pm revision 50 by dpavlin, Tue Jun 19 21:29:04 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;
# Line 7  use warnings; Line 7  use warnings;
7  use base qw/Class::Accessor/;  use base qw/Class::Accessor/;
8  __PACKAGE__->mk_accessors( qw/  __PACKAGE__->mk_accessors( qw/
9  debug  debug
10  port  store
11    
12  sock  sock
13  state  state
14  queue  queue
15    store
16  / );  / );
17    
18  use IO::Socket::INET;  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  use CWMP::Request;  use CWMP::Request;
24  use CWMP::Response;  use CWMP::Response;
25  use Carp qw/confess cluck/;  use CWMP::Store;
26    
27  =head1 NAME  =head1 NAME
28    
29  CWMP::Server - implement logic of CWMP protocol  CWMP::Session - implement logic of CWMP protocol
30    
31  =head1 METHODS  =head1 METHODS
32    
33  =head2 new  =head2 new
34    
35    my $server = CWMP::Server->new({ port => 3333 });    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  =head2 run  =cut
46    
47    $server->run();  sub new {
48            my $class = shift;
49            my $self = $class->SUPER::new( @_ );
50    
51  =cut          confess "need sock" unless $self->sock;
52    
53  sub run {          $self->debug( 0 ) unless $self->debug;
         my $self = shift;  
54    
55          my $listen = IO::Socket::INET->new(          warn "created ", __PACKAGE__, "(", dump( @_ ), ") for ", $self->sock->peerhost, "\n" if $self->debug;
                 Listen    => 5,  
 #               LocalAddr => 'localhost',  
                 LocalPort => $self->port,  
                 Proto     => 'tcp',  
                 Blocking  => 1,  
                 ReuseAddr => 1,  
         );  
   
         warn "waiting for request on port ", $self->port, $/;  
   
         while ( my $sock = $listen->accept ) {  
                 $sock->autoflush(1);  
   
                 warn "connection from ", $sock->peerhost, "\n";  
   
                 $self->sock( $sock );   # FIXME this will not work for multiple clients  
                 while ( $self->process_request ) {  
                         warn "...another one bites a dust...\n";  
                 }  
56    
57                  warn "...returning to accepting new connections\n";          my $store_obj = CWMP::Store->new({
58          }                  debug => $self->debug,
59                    %{ $self->store },
60            });
61    
62            croak "can't open ", dump( $self->store ), ": $!" unless $store_obj;
63    
64            # FIXME looks ugly. Should we have separate accessor for this?
65            $self->store( $store_obj );
66    
67            return $self;
68  }  }
69    
70  =head2 process_request  =head2 process_request
# Line 69  One request from client/response from se Line 73  One request from client/response from se
73  facilitate brain-dead concept of adding state to stateless protocol like  facilitate brain-dead concept of adding state to stateless protocol like
74  HTTP.  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  =cut
81    
82    my $dump_nr = 0;
83    
84  sub process_request {  sub process_request {
85          my $self = shift;          my $self = shift;
86    
87          my $sock = $self->sock || die "no sock?";          my $sock = $self->sock || die "no sock?";
88    
89          die "not IO::Socket::INET but ", ref( $sock ) unless ( ref($sock) eq 'IO::Socket::INET' );  #       die "not IO::Socket::INET but ", ref( $sock ) unless ( ref($sock) eq 'Net::Server::Proto::TCP' );
90    
91          if ( ! $sock->connected ) {          if ( ! $sock->connected ) {
92                  warn "SOCKET NOT CONNECTED";                  warn "SOCKET NOT CONNECTED\n";
93                  return 0;                  return 0;
94          }          }
95    
96          $sock->autoflush( 1 );          bless $sock, 'HTTP::Daemon::ClientConn';
         $sock->blocking( 1 );  
   
         ### read the first line of response  
         my $line = $sock->getline;  
         return $self->error(400, "No Data") unless ( defined $line );  
   
         $line =~ s/[\r\n]+$//;  
         if ($line !~ /^ (\w+) \ + (\S+) \ + (HTTP\/1.\d) $ /x) {  
                 warn "ERROR: $line\n";  
                 return $self->error(400, "Bad request");  
         }  
         my ($method, $req, $protocol) = ($1, $2, $3);  
         warn "<<<< ", $sock->peerhost, " - - [" . localtime() . "] \"$method $req $protocol\"\n";  
   
         ### read in other headers  
         $self->read_headers || return $self->error(400, "Strange headers");  
   
         ### do we support the type  
 #       if ($method !~ /GET|POST|HEAD/) {  
         if ($method !~ /POST/) {  
                 return $self->error(400, "Unsupported Method");  
         }  
   
     my $chunk;  
         my $transfer_encoding = $self->header('Transfer-Encoding');  
   
         if ( $transfer_encoding && $transfer_encoding =~ qr/^chunked/i ) {  
   
                 my $len = 0;  
97    
98                  do {          # 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                          warn "get chunk len\n" if $self->debug;          my $r = $sock->get_request || confess "can't get_request";
                           
                         my $hex;  
                         do {  
                                 $hex = $sock->getline;  
                                 $hex =~ s/[\n\r]+$//;  
                         } until ( $hex ne '' );  
103    
104                          die "chunk size not valid hex: $hex" unless ( $hex =~ m/^[0-9a-f]+$/i);          my $xml = $r->content;
                         $len = hex( $hex );  
105    
106                          warn "getting chunk of $len bytes\n" if $self->debug;          my $size = length( $xml );
107    
108                          $sock->read( my $buff, $len );          warn "<<<< ", $sock->peerhost, " [" . localtime() . "] ", $r->method, " ", $r->uri, " $size bytes\n";
                         $chunk .= $buff;  
109    
110                          warn "--- $len bytes: --=>||$buff||<=--\n";          if ( $self->debug > 2 ) {
111                    my $file = sprintf("dump/%04d-%s.request", $dump_nr++, $sock->peerhost);
112                  } while ( $len > 0 );                  write_file( $file, $r->as_string );
113                  my $sep = $sock->getline;                  warn "### request dumped to file: $file\n";
                 die "expected separator, not ", dump( $sep ) if ( $sep !~ m/^[\n\r]+$/ );  
   
         } else {  
                 die "right now, we support only Transfer-Encoding: chunked";  
114          }          }
115    
         my $size = length( $chunk );  
   
         warn "<<< " . $sock->peerhost . " [" . localtime() . "] request $size bytes\n";  
   
116          my $state;          my $state;
117    
118          if ( $size > 0 ) {          if ( $size > 0 ) {
119    
120                  die "no SOAPAction header in ",dump($chunk) unless defined ( $self->header('SOAPAction') );                  die "no SOAPAction header in ",dump($xml) unless defined ( $r->header('SOAPAction') );
121    
122                    warn "## request payload: ",length($xml)," bytes\n$xml\n" if $self->debug;
123    
124                  if ( $chunk ) {                  $state = CWMP::Request->parse( $xml );
                         warn "## request chunk: ",length($chunk)," bytes\n$chunk\n" if $self->debug;  
125    
126                          $state = CWMP::Request->parse( $chunk );                  warn "## acquired state = ", dump( $state ), "\n";
127    
128                          warn "acquired state = ", dump( $state ), "\n";                  $self->state( $state );
129                    $self->store->update_state( ID => $state->{ID}, $state );
130    
131                          $self->state( $state );          } else {
132    
133                  } else {                  warn "## empty request, using last request state\n";
                         warn "empty request\n";  
                 }  
134    
         } else {  
135                  $state = $self->state;                  $state = $self->state;
136                  warn "last request state = ", dump( $state ), "\n";                  delete( $state->{_dispatch} );
137                    #warn "last request state = ", dump( $state ), "\n" if $self->debug > 1;
138          }          }
139    
140    
# Line 177  sub process_request { Line 143  sub process_request {
143                  'Content-Type: text/xml; charset="utf-8"',                  'Content-Type: text/xml; charset="utf-8"',
144                  'Server: AcmeCWMP/42',                  'Server: AcmeCWMP/42',
145                  'SOAPServer: AcmeCWMP/42'                  'SOAPServer: AcmeCWMP/42'
146          ));          )."\r\n");
147    
148          $sock->send( "Set-Cookie: ID=" . $state->{ID} . "; path=/\r\n" ) if ( $state->{ID} );          $sock->send( "Set-Cookie: ID=" . $state->{ID} . "; path=/\r\n" ) if ( $state->{ID} );
149                    
150          my $xml = '';          $xml = '';
151    
152          if ( my $dispatch = $state->{_dispatch} ) {          if ( my $dispatch = $state->{_dispatch} ) {
153                  $xml = $self->dispatch( $dispatch );                  $xml = $self->dispatch( $dispatch );
154          } elsif ( $dispatch = shift @{ $self->queue } ) {          } elsif ( $dispatch = shift @{ $self->queue } ) {
155                  $xml = $self->dispatch( $dispatch );                  $xml = $self->dispatch( $dispatch );
156          } elsif ( $size == 0 ) {          } elsif ( $size == 0 ) {
157                  warn ">>> closing connection\n";                  warn ">>> no more queued commands, closing connection\n";
158                  return 0;                  return 0;
159          } else {          } else {
160                  warn ">>> empty response\n";                  warn ">>> empty response\n";
# Line 199  sub process_request { Line 165  sub process_request {
165          $sock->send( "Content-Length: " . length( $xml ) . "\r\n\r\n" );          $sock->send( "Content-Length: " . length( $xml ) . "\r\n\r\n" );
166          $sock->send( $xml ) or die "can't send response";          $sock->send( $xml ) or die "can't send response";
167    
168          warn "### request over";          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  =head2 dispatch  =head2 dispatch
176    
177    $xml = $self->dispatch('Inform', $response_arguments );    $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  =cut
182    
183  sub dispatch {  sub dispatch {
184          my $self = shift;          my $self = shift;
185    
186          my $dispatch = shift || die "no dispatch?";          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 });          my $response = CWMP::Response->new({ debug => $self->debug });
196    
197          if ( $response->can( $dispatch ) ) {          if ( $response->can( $dispatch ) ) {
198                  warn ">>> dispatching to $dispatch\n";                  warn ">>> dispatching to $dispatch\n";
199                  my $xml = $response->$dispatch( $self->state, @_ ) . "\r\n";                  my $xml = $response->$dispatch( $self->state, @args );
200                  warn "## response payload: ",length($xml)," bytes\n$xml\n";                  warn "## response payload: ",length($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;                  return $xml;
207          } else {          } else {
208                  confess "can't dispatch to $dispatch";                  confess "can't dispatch to $dispatch";
209          }          }
210  };  };
211    
 =head2 read_headers  
   
 parse headers from request  
   
 =cut  
   
 sub read_headers {  
   my $self = shift;  
   
   $self->{headers} = {};  
   
   while (defined($_ = $self->sock->getline)) {  
     s/[\r\n]+$//;  
     last unless length $_;  
         warn "-- $_\n";  
     return 0 if ! /^ ([\w\-]+) :[\ \t]* (.*) $/x;  
     $self->{headers}->{$1} = $2;  
   }  
   
   return 1;  
 }  
   
 =head2 header  
   
 Getter for specific header  
   
   $self->header('Cookies');  
   
 =cut  
   
 sub header {  
         my $self = shift;  
         my $header = shift || die "no header?";  
         if ( defined( $self->{headers}->{$header} )) {  
                 return $self->{headers}->{$header};  
         } else {  
                 return;  
         }  
 }  
212    
213  =head2 error  =head2 error
214    
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