| 1 |
# Dobrica Pavlinusic, <dpavlin@rot13.org> 06/18/07 10:19:50 CEST |
| 2 |
package CWMP::Server; |
| 3 |
|
| 4 |
use strict; |
| 5 |
use warnings; |
| 6 |
|
| 7 |
use base qw/Class::Accessor/; |
| 8 |
__PACKAGE__->mk_accessors( qw/ |
| 9 |
debug |
| 10 |
port |
| 11 |
/ ); |
| 12 |
|
| 13 |
use IO::Socket::INET; |
| 14 |
use Data::Dump qw/dump/; |
| 15 |
use CWMP::Request; |
| 16 |
use CWMP::Response; |
| 17 |
use Carp qw/confess cluck/; |
| 18 |
|
| 19 |
=head1 NAME |
| 20 |
|
| 21 |
CWMP::Server - implement logic of CWMP protocol |
| 22 |
|
| 23 |
=head1 METHODS |
| 24 |
|
| 25 |
=head2 new |
| 26 |
|
| 27 |
my $server = CWMP::Server->new({ port => 3333 }); |
| 28 |
|
| 29 |
=head2 run |
| 30 |
|
| 31 |
$server->run(); |
| 32 |
|
| 33 |
=cut |
| 34 |
|
| 35 |
sub run { |
| 36 |
my $self = shift; |
| 37 |
|
| 38 |
my $listen = IO::Socket::INET->new( |
| 39 |
Listen => 5, |
| 40 |
# LocalAddr => 'localhost', |
| 41 |
LocalPort => $self->port, |
| 42 |
Proto => 'tcp', |
| 43 |
Blocking => 1, |
| 44 |
ReuseAddr => 1, |
| 45 |
); |
| 46 |
|
| 47 |
warn "waiting for request on port ", $self->port, $/; |
| 48 |
|
| 49 |
while ( my $sock = $listen->accept ) { |
| 50 |
$sock->autoflush(1); |
| 51 |
|
| 52 |
warn "connection from ", $sock->peerhost, "\n"; |
| 53 |
|
| 54 |
$self->process_request( $sock ); |
| 55 |
|
| 56 |
warn "...another one bites a dust...\n"; |
| 57 |
sleep 1; |
| 58 |
} |
| 59 |
} |
| 60 |
|
| 61 |
sub process_request { |
| 62 |
my $self = shift; |
| 63 |
|
| 64 |
my $sock = shift || die "no sock?"; |
| 65 |
|
| 66 |
die "not IO::Socket::INET but ", ref( $sock ) unless ( ref($sock) eq 'IO::Socket::INET' ); |
| 67 |
|
| 68 |
$sock->autoflush( 1 ); |
| 69 |
$sock->blocking( 1 ); |
| 70 |
|
| 71 |
### read the first line of response |
| 72 |
my $line = $sock->getline; # || $self->error(400, "No Data"); |
| 73 |
|
| 74 |
$line =~ s/[\r\n]+$//; |
| 75 |
if ($line !~ /^ (\w+) \ + (\S+) \ + (HTTP\/1.\d) $ /x) { |
| 76 |
return $self->error(400, "Bad request"); |
| 77 |
} |
| 78 |
my ($method, $req, $protocol) = ($1, $2, $3); |
| 79 |
warn "<<<< ",join(" ", time, $method, $req)."\n"; |
| 80 |
|
| 81 |
### read in other headers |
| 82 |
$self->read_headers($sock) || return $self->error(400, "Strange headers"); |
| 83 |
|
| 84 |
### do we support the type |
| 85 |
# if ($method !~ /GET|POST|HEAD/) { |
| 86 |
if ($method !~ /POST/) { |
| 87 |
return $self->error(400, "Unsupported Method"); |
| 88 |
} |
| 89 |
|
| 90 |
my $chunk; |
| 91 |
my $transfer_encoding = $self->header('Transfer-Encoding'); |
| 92 |
|
| 93 |
if ( $transfer_encoding && $transfer_encoding =~ qr/^chunked/i ) { |
| 94 |
|
| 95 |
my $len = 0; |
| 96 |
|
| 97 |
do { |
| 98 |
|
| 99 |
warn "get chunk len\n" if $self->debug; |
| 100 |
|
| 101 |
my $hex; |
| 102 |
do { |
| 103 |
$hex = $sock->getline; |
| 104 |
$hex =~ s/[\n\r]+$//; |
| 105 |
} until ( $hex ne '' ); |
| 106 |
|
| 107 |
die "chunk size not valid hex: $hex" unless ( $hex =~ m/^[0-9a-f]+$/i); |
| 108 |
$len = hex( $hex ); |
| 109 |
|
| 110 |
warn "getting chunk of $len bytes\n" if $self->debug; |
| 111 |
|
| 112 |
$sock->read( my $buff, $len ); |
| 113 |
$chunk .= $buff; |
| 114 |
|
| 115 |
warn "--- $len bytes: --=>||$buff||<=--\n"; |
| 116 |
|
| 117 |
} while ( $len > 0 ); |
| 118 |
|
| 119 |
} else { |
| 120 |
die "right now, we support only Transfer-Encoding: chunked"; |
| 121 |
} |
| 122 |
|
| 123 |
warn "handler got ", length($chunk), " bytes\n" if $self->debug; |
| 124 |
|
| 125 |
warn "<<< " . localtime() . " " . $sock->peerhost . "\n"; |
| 126 |
|
| 127 |
die "not SOAP request" unless defined ( $self->header('SOAPAction') ); |
| 128 |
|
| 129 |
my $state; |
| 130 |
|
| 131 |
if ( $chunk ) { |
| 132 |
warn "## request chunk: ",length($chunk)," bytes\n$chunk\n" if $self->debug; |
| 133 |
|
| 134 |
$state = CWMP::Request->parse( $chunk ); |
| 135 |
|
| 136 |
warn "acquired state = ", dump( $state ), "\n"; |
| 137 |
|
| 138 |
} else { |
| 139 |
warn "empty request\n"; |
| 140 |
} |
| 141 |
|
| 142 |
|
| 143 |
my $response = CWMP::Response->new({ debug => $self->debug }); |
| 144 |
|
| 145 |
print $self->status(200), $self->content_type('text/xml; charset="utf-8"'), "\r\n"; |
| 146 |
|
| 147 |
print "Server: AcmeCWMP/42\r\nSOAPServer: AcmeCWMP/42\r\n"; |
| 148 |
|
| 149 |
print "Set-Cookie: ID=" , $state->{ID}, "; path=/\r\n" if ( $state->{ID} ); |
| 150 |
|
| 151 |
my $xml = ''; |
| 152 |
|
| 153 |
if ( my $dispatch = $state->{_dispatch} ) { |
| 154 |
if ( $response->can( $dispatch ) ) { |
| 155 |
warn ">>> dispatching to $dispatch\n"; |
| 156 |
$xml = $response->$dispatch( $state ) . "\r\n"; |
| 157 |
warn "## response payload: ",length($xml)," bytes\n$xml\n"; |
| 158 |
} else { |
| 159 |
confess "can't dispatch to $dispatch"; |
| 160 |
} |
| 161 |
} else { |
| 162 |
warn ">>> empty response\n"; |
| 163 |
} |
| 164 |
|
| 165 |
print "Content-length: ", length( $xml ), "\r\n\r\n"; |
| 166 |
print $xml or die "can't send response"; |
| 167 |
|
| 168 |
warn "### request over"; |
| 169 |
|
| 170 |
}; |
| 171 |
|
| 172 |
|
| 173 |
sub read_headers { |
| 174 |
my $self = shift; |
| 175 |
|
| 176 |
my $sock = shift || die "no sock?"; |
| 177 |
|
| 178 |
$self->{headers} = {}; |
| 179 |
|
| 180 |
while (defined($_ = $sock->getline)) { |
| 181 |
s/[\r\n]+$//; |
| 182 |
last unless length $_; |
| 183 |
warn "-- $_\n"; |
| 184 |
return 0 if ! /^ ([\w\-]+) :[\ \t]* (.*) $/x; |
| 185 |
$self->{headers}->{$1} = $2; |
| 186 |
} |
| 187 |
|
| 188 |
return 1; |
| 189 |
} |
| 190 |
|
| 191 |
sub header { |
| 192 |
my $self = shift; |
| 193 |
my $header = shift || die "no header?"; |
| 194 |
if ( defined( $self->{headers}->{$header} )) { |
| 195 |
return $self->{headers}->{$header}; |
| 196 |
} else { |
| 197 |
return; |
| 198 |
} |
| 199 |
} |
| 200 |
|
| 201 |
sub content_type { |
| 202 |
my ($self, $type) = @_; |
| 203 |
$self->http_header; |
| 204 |
return "Content-type: $type\r\n"; |
| 205 |
} |
| 206 |
|
| 207 |
sub error{ |
| 208 |
my ($self, $number, $msg) = @_; |
| 209 |
print $self->status($number, $msg), "\r\n"; |
| 210 |
warn "Error - $number - $msg\n"; |
| 211 |
} |
| 212 |
|
| 213 |
sub status { |
| 214 |
my ($self, $number, $msg) = @_; |
| 215 |
$msg = '' if ! defined $msg; |
| 216 |
return if $self->http_header($number); |
| 217 |
return "Status $number: $msg\r\n"; |
| 218 |
} |
| 219 |
|
| 220 |
sub http_header { |
| 221 |
my $self = shift; |
| 222 |
my $number = shift || 200; |
| 223 |
return if ! delete $self->{needs_header}; |
| 224 |
print "HTTP/1.0 $number\r\n"; |
| 225 |
return 1; |
| 226 |
} |
| 227 |
|
| 228 |
1; |
Parent Directory
| 
Revision Log