/[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 197 by dpavlin, Mon Nov 12 22:03:01 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  store
15  / );  / );
16    
17  use IO::Socket::INET;  use HTTP::Daemon;
18  use Data::Dump qw/dump/;  use Data::Dump qw/dump/;
19    use Carp qw/confess cluck croak/;
20    use File::Slurp;
21    
22  use CWMP::Request;  use CWMP::Request;
23  use CWMP::Response;  use CWMP::Methods;
24  use Carp qw/confess cluck/;  use CWMP::Store;
25    
26  =head1 NAME  =head1 NAME
27    
28  CWMP::Server - implement logic of CWMP protocol  CWMP::Session - implement logic of CWMP protocol
29    
30  =head1 METHODS  =head1 METHODS
31    
32  =head2 new  =head2 new
33    
34    my $server = CWMP::Server->new({ port => 3333 });    my $server = CWMP::Session->new({
35            sock => $io_socket_object,
36            store => 'state.db',
37            debug => 1,
38      });
39    
40  =head2 run  =cut
41    
42    $server->run();  sub new {
43            my $class = shift;
44            my $self = $class->SUPER::new( @_ );
45    
46  =cut          confess "need sock" unless $self->sock;
47    
48  sub run {          $self->debug( 0 ) unless $self->debug;
         my $self = shift;  
49    
50          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";  
                 }  
51    
52                  warn "...returning to accepting new connections\n";          my $store_obj = CWMP::Store->new({
53          }                  debug => $self->debug,
54                    %{ $self->store },
55            });
56    
57            croak "can't open ", dump( $self->store ), ": $!" unless $store_obj;
58    
59            # FIXME looks ugly. Should we have separate accessor for this?
60            $self->store( $store_obj );
61    
62            return $self;
63  }  }
64    
65  =head2 process_request  =head2 process_request
# Line 69  One request from client/response from se Line 68  One request from client/response from se
68  facilitate brain-dead concept of adding state to stateless protocol like  facilitate brain-dead concept of adding state to stateless protocol like
69  HTTP.  HTTP.
70    
71    If used with debugging level of 3 or more, it will also create dumps of
72    requests named C<< dump/nr.request >> where C<nr> is number from 0 to total number
73    of requests in single session.
74    
75  =cut  =cut
76    
77    my $dump_nr = 0;
78    
79  sub process_request {  sub process_request {
80          my $self = shift;          my $self = shift;
81    
82          my $sock = $self->sock || die "no sock?";          my $sock = $self->sock || die "no sock?";
83    
84          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' );
85    
86          if ( ! $sock->connected ) {          if ( ! $sock->connected ) {
87                  warn "SOCKET NOT CONNECTED";                  warn "SOCKET NOT CONNECTED\n";
88                  return 0;                  return 0;
89          }          }
90    
91          $sock->autoflush( 1 );          bless $sock, 'HTTP::Daemon::ClientConn';
         $sock->blocking( 1 );  
92    
93          ### read the first line of response          # why do I have to do this?
94          my $line = $sock->getline;          # solution from http://use.perl.org/~Matts/journal/12896
95          return $self->error(400, "No Data") unless ( defined $line );          ${*$sock}{'httpd_daemon'} = HTTP::Daemon->new;
   
         $line =~ s/[\r\n]+$//;  
         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";  
96    
97          ### read in other headers          my $r = $sock->get_request || confess "can't get_request";
         $self->read_headers || return $self->error(400, "Strange headers");  
98    
99          ### do we support the type          my $xml = $r->content;
 #       if ($method !~ /GET|POST|HEAD/) {  
         if ($method !~ /POST/) {  
                 return $self->error(400, "Unsupported Method");  
         }  
100    
101      my $chunk;          my $size = length( $xml );
         my $transfer_encoding = $self->header('Transfer-Encoding');  
102    
103          if ( $transfer_encoding && $transfer_encoding =~ qr/^chunked/i ) {          warn "<<<< ", $sock->peerhost, " [" . localtime() . "] ", $r->method, " ", $r->uri, " $size bytes\n";
104    
105                  my $len = 0;          $dump_nr++;
106            my $file = sprintf("dump/%04d-%s.request", $dump_nr, $sock->peerhost);
107    
108                  do {          if ( $self->debug > 2 ) {
109                    write_file( $file, $r->as_string );
110                          warn "get chunk len\n" if $self->debug;                  warn "### request dumped to file: $file\n";
                           
                         my $hex;  
                         do {  
                                 $hex = $sock->getline;  
                                 $hex =~ s/[\n\r]+$//;  
                         } until ( $hex ne '' );  
   
                         die "chunk size not valid hex: $hex" unless ( $hex =~ m/^[0-9a-f]+$/i);  
                         $len = hex( $hex );  
   
                         warn "getting chunk of $len bytes\n" if $self->debug;  
   
                         $sock->read( my $buff, $len );  
                         $chunk .= $buff;  
   
                         warn "--- $len bytes: --=>||$buff||<=--\n";  
   
                 } while ( $len > 0 );  
                 my $sep = $sock->getline;  
                 die "expected separator, not ", dump( $sep ) if ( $sep !~ m/^[\n\r]+$/ );  
   
         } else {  
                 die "right now, we support only Transfer-Encoding: chunked";  
111          }          }
112    
         my $size = length( $chunk );  
   
         warn "<<< " . $sock->peerhost . " [" . localtime() . "] request $size bytes\n";  
   
113          my $state;          my $state;
114    
115          if ( $size > 0 ) {          if ( $size > 0 ) {
116    
117                  die "no SOAPAction header in ",dump($chunk) unless defined ( $self->header('SOAPAction') );                  die "no SOAPAction header in ",dump($xml) unless defined ( $r->header('SOAPAction') );
118    
119                    warn "## request payload: ",length($xml)," bytes\n$xml\n" if $self->debug;
120    
121                  if ( $chunk ) {                  $state = CWMP::Request->parse( $xml );
                         warn "## request chunk: ",length($chunk)," bytes\n$chunk\n" if $self->debug;  
122    
123                          $state = CWMP::Request->parse( $chunk );                  if ( defined( $state->{_dispatch} ) && $self->debug > 2 ) {
124                            my $type = sprintf("dump/%04d-%s-%s", $dump_nr, $sock->peerhost, $state->{_dispatch});
125                          warn "acquired state = ", dump( $state ), "\n";                          symlink $file, $type || warn "can't symlink $file -> $type: $!";
126                    }
127    
128                          $self->state( $state );                  warn "## acquired state = ", dump( $state ), "\n";
129    
130                  } else {                  $self->state( $state );
131                          warn "empty request\n";                  $self->store->update_state( ID => $state->{ID}, $state );
                 }  
132    
133          } else {          } else {
134    
135                    warn "## empty request, using last request state\n";
136    
137                  $state = $self->state;                  $state = $self->state;
138                  warn "last request state = ", dump( $state ), "\n";                  delete( $state->{_dispatch} );
139                    #warn "last request state = ", dump( $state ), "\n" if $self->debug > 1;
140          }          }
141    
142    
# Line 177  sub process_request { Line 145  sub process_request {
145                  'Content-Type: text/xml; charset="utf-8"',                  'Content-Type: text/xml; charset="utf-8"',
146                  'Server: AcmeCWMP/42',                  'Server: AcmeCWMP/42',
147                  'SOAPServer: AcmeCWMP/42'                  'SOAPServer: AcmeCWMP/42'
148          ));          )."\r\n");
149    
150          $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} );
151            
152          my $xml = '';          my $queue = CWMP::Queue->new({
153                    id => $self->store->ID_to_uid( $state->{ID}, $state ),
154                    debug => $self->debug,
155            });
156            my $job;
157            $xml = '';
158    
159          if ( my $dispatch = $state->{_dispatch} ) {          if ( my $dispatch = $state->{_dispatch} ) {
160                  $xml = $self->dispatch( $dispatch );                  $xml = $self->dispatch( $dispatch );
161          } elsif ( $dispatch = shift @{ $self->queue } ) {          } elsif ( $job = $queue->dequeue ) {
162                  $xml = $self->dispatch( $dispatch );                  $xml = $self->dispatch( $job->dispatch );
163          } elsif ( $size == 0 ) {          } elsif ( $size == 0 ) {
164                  warn ">>> closing connection\n";                  warn ">>> no more queued commands, closing connection\n";
165                  return 0;                  return 0;
166          } else {          } else {
167                  warn ">>> empty response\n";                  warn ">>> empty response\n";
# Line 199  sub process_request { Line 172  sub process_request {
172          $sock->send( "Content-Length: " . length( $xml ) . "\r\n\r\n" );          $sock->send( "Content-Length: " . length( $xml ) . "\r\n\r\n" );
173          $sock->send( $xml ) or die "can't send response";          $sock->send( $xml ) or die "can't send response";
174    
175          warn "### request over";          warn ">>>> " . $sock->peerhost . " [" . localtime() . "] sent ", length( $xml )," bytes\n";
176    
177            $job->finish if $job;
178            warn "### request over\n" if $self->debug;
179    
180            return 1;       # next request
181  };  };
182    
183  =head2 dispatch  =head2 dispatch
184    
185    $xml = $self->dispatch('Inform', $response_arguments );    $xml = $self->dispatch('Inform', $response_arguments );
186    
187    If debugging level of 3 or more, it will create dumps of responses named C<< dump/nr.response >>
188    
189  =cut  =cut
190    
191  sub dispatch {  sub dispatch {
192          my $self = shift;          my $self = shift;
193    
194          my $dispatch = shift || die "no dispatch?";          my $dispatch = shift || die "no dispatch?";
195            my @args = @_;
196    
197            if ( ref($dispatch) eq 'ARRAY' ) {
198                    my @a = @$dispatch;
199                    $dispatch = shift @a;
200                    push @args, @a;
201            }
202    
203          my $response = CWMP::Response->new({ debug => $self->debug });          my $response = CWMP::Methods->new({ debug => $self->debug });
204    
205          if ( $response->can( $dispatch ) ) {          if ( $response->can( $dispatch ) ) {
206                  warn ">>> dispatching to $dispatch\n";                  warn ">>> dispatching to $dispatch\n";
207                  my $xml = $response->$dispatch( $self->state, @_ ) . "\r\n";                  my $xml = $response->$dispatch( $self->state, @args );
208                  warn "## response payload: ",length($xml)," bytes\n$xml\n";                  warn "## response payload: ",length($xml)," bytes\n$xml\n" if $self->debug;
209                    if ( $self->debug > 2 ) {
210                            my $file = sprintf("dump/%04d-%s.response", $dump_nr++, $self->sock->peerhost);
211                            write_file( $file, $xml );
212                            warn "### response dump: $file\n";
213                    }
214                  return $xml;                  return $xml;
215          } else {          } else {
216                  confess "can't dispatch to $dispatch";                  confess "can't dispatch to $dispatch";
217          }          }
218  };  };
219    
 =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;  
         }  
 }  
220    
221  =head2 error  =head2 error
222    
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