/[cwmp]/google/trunk/lib/CWMP/Session.pm
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google/lib/CWMP/Server.pm revision 40 by dpavlin, Tue Jun 19 17:29:07 2007 UTC google/lib/CWMP/Session.pm revision 111 by dpavlin, Sun Oct 21 22:58:22 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_path
11    
12    sock
13    state
14    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_path => 'state.db',
38            queue => [ qw/GetRPCMethods GetParameterNames/ ],
39            debug => 1,
40      });
41    
42  =head2 run  =cut
43    
44    $server->run();  sub new {
45            my $class = shift;
46            my $self = $class->SUPER::new( @_ );
47    
48  =cut          confess "need sock" unless $self->sock;
49    
50  sub run {          $self->debug( 0 ) unless $self->debug;
         my $self = shift;  
51    
52          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);  
53    
54                  warn "connection from ", $sock->peerhost, "\n";          $self->store( CWMP::Store->new({
55                    debug => $self->debug,
56                    path => $self->store_path,
57            }) );
58    
59                  $self->process_request( $sock );          croak "can't open ", $self->store_path, ": $!" unless $self->store;
60    
61                  warn "...another one bites a dust...\n";          return $self;
                 sleep 1;  
         }  
62  }  }
63    
64  sub process_request {  =head2 process_request
         my $self = shift;  
65    
66          my $sock = shift || die "no sock?";  One request from client/response from server cycle. Call multiple times to
67    facilitate brain-dead concept of adding state to stateless protocol like
68    HTTP.
69    
70          die "not IO::Socket::INET but ", ref( $sock ) unless ( ref($sock) eq 'IO::Socket::INET' );  If used with debugging level of 3 or more, it will also create dumps of
71    requests named C<< nr.dump >> where C<nr> is number from 0 to total number
72    of requests in single session.
73    
74          $sock->autoflush( 1 );  =cut
         $sock->blocking( 1 );  
75    
76          ### read the first line of response  my $dump_nr = 0;
         my $line = $sock->getline; # || $self->error(400, "No Data");  
77    
78          $line =~ s/[\r\n]+$//;  sub process_request {
79          if ($line !~ /^ (\w+) \ + (\S+) \ + (HTTP\/1.\d) $ /x) {          my $self = shift;
                 return $self->error(400, "Bad request");  
         }  
         my ($method, $req, $protocol) = ($1, $2, $3);  
         warn "<<<< ",join(" ", time, $method, $req)."\n";  
80    
81          ### read in other headers          my $sock = $self->sock || die "no sock?";
         $self->read_headers($sock) || return $self->error(400, "Strange headers");  
82    
83          ### do we support the type  #       die "not IO::Socket::INET but ", ref( $sock ) unless ( ref($sock) eq 'Net::Server::Proto::TCP' );
84  #       if ($method !~ /GET|POST|HEAD/) {  
85          if ($method !~ /POST/) {          if ( ! $sock->connected ) {
86                  return $self->error(400, "Unsupported Method");                  warn "SOCKET NOT CONNECTED\n";
87                    return 0;
88          }          }
89    
90      my $chunk;          bless $sock, 'HTTP::Daemon::ClientConn';
         my $transfer_encoding = $self->header('Transfer-Encoding');  
91    
92          if ( $transfer_encoding && $transfer_encoding =~ qr/^chunked/i ) {          # 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 $len = 0;          my $r = $sock->get_request || confess "can't get_request";
97    
98                  do {          my $chunk = $r->content;
99    
100                          warn "get chunk len\n" if $self->debug;          my $size = length( $chunk );
                           
                         my $hex;  
                         do {  
                                 $hex = $sock->getline;  
                                 $hex =~ s/[\n\r]+$//;  
                         } until ( $hex ne '' );  
101    
102                          die "chunk size not valid hex: $hex" unless ( $hex =~ m/^[0-9a-f]+$/i);          warn "<<<< ", $sock->peerhost, " [" . localtime() . "] ", $r->method, " ", $r->uri, " $size bytes\n";
                         $len = hex( $hex );  
103    
104                          warn "getting chunk of $len bytes\n" if $self->debug;          if ( $self->debug > 2 ) {
105                    my $file = $dump_nr++ . '.dump';
106                    write_file( $file, $r->as_string );
107                    warn "### request dump: $file\n";
108            }
109    
110                          $sock->read( my $buff, $len );          my $state;
                         $chunk .= $buff;  
111    
112                          warn "--- $len bytes: --=>||$buff||<=--\n";          if ( $size > 0 ) {
113    
114                  } while ( $len > 0 );                  die "no SOAPAction header in ",dump($chunk) unless defined ( $r->header('SOAPAction') );
115    
         } else {  
                 die "right now, we support only Transfer-Encoding: chunked";  
         }  
116    
117          warn "handler got ", length($chunk), " bytes\n" if $self->debug;                  if ( $chunk ) {
118                            warn "## request chunk: ",length($chunk)," bytes\n$chunk\n" if $self->debug;
119    
120          warn "<<< " . localtime() . " " . $sock->peerhost . "\n";                          $state = CWMP::Request->parse( $chunk );
121    
122          die "not SOAP request" unless defined ( $self->header('SOAPAction') );                          warn "## acquired state = ", dump( $state ), "\n";
123    
124          my $state;                          $self->state( $state );
125                            $self->store->update_state( ID => $state->{ID}, $state );
126    
127          if ( $chunk ) {                  } else {
128                  warn "## request chunk: ",length($chunk)," bytes\n$chunk\n" if $self->debug;                          warn "## empty request\n";
129                    }
                 $state = CWMP::Request->parse( $chunk );  
130    
                 warn "acquired state = ", dump( $state ), "\n";  
           
131          } else {          } else {
132                  warn "empty request\n";                  $state = $self->state;
133                    warn "last request state = ", dump( $state ), "\n" if $self->debug > 1;
134          }          }
135    
136    
137          my $response = CWMP::Response->new({ debug => $self->debug });          $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          print $self->status(200), $self->content_type('text/xml; charset="utf-8"'), "\r\n";          $sock->send( "Set-Cookie: ID=" . $state->{ID} . "; path=/\r\n" ) if ( $state->{ID} );
   
         print "Server: AcmeCWMP/42\r\nSOAPServer: AcmeCWMP/42\r\n";  
   
         print "Set-Cookie: ID=" , $state->{ID}, "; path=/\r\n" if ( $state->{ID} );  
145                    
146          my $xml = '';          my $xml = '';
147    
148          if ( my $dispatch = $state->{_dispatch} ) {          if ( my $dispatch = $state->{_dispatch} ) {
149                  if ( $response->can( $dispatch ) ) {                  $xml = $self->dispatch( $dispatch );
150                          warn ">>> dispatching to $dispatch\n";          } elsif ( $dispatch = shift @{ $self->queue } ) {
151                          $xml = $response->$dispatch( $state ) . "\r\n";                  $xml = $self->dispatch( $dispatch );
152                          warn "## response payload: ",length($xml)," bytes\n$xml\n";          } elsif ( $size == 0 ) {
153                  } else {                  warn ">>> closing connection\n";
154                          confess "can't dispatch to $dispatch";                  return 0;
                 }  
155          } else {          } else {
156                  warn ">>> empty response\n";                  warn ">>> empty response\n";
157                    $state->{NoMoreRequests} = 1;
158                    $xml = $self->dispatch( 'xml', sub {} );
159          }          }
160    
161          print "Content-length: ", length( $xml ), "\r\n\r\n";          $sock->send( "Content-Length: " . length( $xml ) . "\r\n\r\n" );
162          print $xml or die "can't send response";          $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";          warn "### request over\n" if $self->debug;
167    
168            return 1;       # next request
169  };  };
170    
171    =head2 dispatch
172    
173  sub read_headers {    $xml = $self->dispatch('Inform', $response_arguments );
   my $self = shift;  
174    
175          my $sock = shift || die "no sock?";  =cut
176    
177    $self->{headers} = {};  sub dispatch {
178            my $self = shift;
179    
180    while (defined($_ = $sock->getline)) {          my $dispatch = shift || die "no dispatch?";
     s/[\r\n]+$//;  
     last unless length $_;  
         warn "-- $_\n";  
     return 0 if ! /^ ([\w\-]+) :[\ \t]* (.*) $/x;  
     $self->{headers}->{$1} = $2;  
   }  
181    
182    return 1;          my $response = CWMP::Response->new({ debug => $self->debug });
 }  
183    
184  sub header {          if ( $response->can( $dispatch ) ) {
185          my $self = shift;                  warn ">>> dispatching to $dispatch\n";
186          my $header = shift || die "no header?";                  my $xml = $response->$dispatch( $self->state, @_ );
187          if ( defined( $self->{headers}->{$header} )) {                  warn "## response payload: ",length($xml)," bytes\n$xml\n" if $self->debug;
188                  return $self->{headers}->{$header};                  return $xml;
189          } else {          } else {
190                  return;                  confess "can't dispatch to $dispatch";
191          }          }
192  }  };
193    
 sub content_type {  
   my ($self, $type) = @_;  
   $self->http_header;  
   return "Content-type: $type\r\n";  
 }  
194    
195  sub error{  =head2 error
   my ($self, $number, $msg) = @_;  
   print $self->status($number, $msg), "\r\n";  
   warn "Error - $number - $msg\n";  
 }  
196    
197  sub status {    return $self->error( 501, 'System error' );
198    my ($self, $number, $msg) = @_;  
199    $msg = '' if ! defined $msg;  =cut
   return if $self->http_header($number);  
   return "Status $number: $msg\r\n";  
 }  
200    
201  sub http_header {  sub error {
202    my $self = shift;    my ($self, $number, $msg) = @_;
203    my $number = shift || 200;    $msg ||= 'ERROR';
204    return if ! delete $self->{needs_header};    $self->sock->send( "HTTP/1.1 $number $msg\r\n" );
205    print "HTTP/1.0 $number\r\n";    warn "Error - $number - $msg\n";
206    return 1;    return 0;     # close connection
207  }  }
208    
209  1;  1;
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