1 |
dpavlin |
30 |
# 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 |
dpavlin |
40 |
use base qw/Class::Accessor/; |
8 |
dpavlin |
30 |
__PACKAGE__->mk_accessors( qw/ |
9 |
|
|
debug |
10 |
dpavlin |
40 |
port |
11 |
dpavlin |
41 |
sock |
12 |
dpavlin |
49 |
state |
13 |
dpavlin |
30 |
/ ); |
14 |
|
|
|
15 |
dpavlin |
40 |
use IO::Socket::INET; |
16 |
dpavlin |
30 |
use Data::Dump qw/dump/; |
17 |
dpavlin |
35 |
use CWMP::Request; |
18 |
|
|
use CWMP::Response; |
19 |
dpavlin |
40 |
use Carp qw/confess cluck/; |
20 |
dpavlin |
30 |
|
21 |
dpavlin |
34 |
=head1 NAME |
22 |
|
|
|
23 |
|
|
CWMP::Server - implement logic of CWMP protocol |
24 |
|
|
|
25 |
|
|
=head1 METHODS |
26 |
|
|
|
27 |
dpavlin |
40 |
=head2 new |
28 |
dpavlin |
34 |
|
29 |
dpavlin |
40 |
my $server = CWMP::Server->new({ port => 3333 }); |
30 |
dpavlin |
34 |
|
31 |
dpavlin |
40 |
=head2 run |
32 |
|
|
|
33 |
|
|
$server->run(); |
34 |
|
|
|
35 |
dpavlin |
34 |
=cut |
36 |
|
|
|
37 |
dpavlin |
40 |
sub run { |
38 |
|
|
my $self = shift; |
39 |
dpavlin |
30 |
|
40 |
dpavlin |
40 |
my $listen = IO::Socket::INET->new( |
41 |
|
|
Listen => 5, |
42 |
|
|
# LocalAddr => 'localhost', |
43 |
|
|
LocalPort => $self->port, |
44 |
|
|
Proto => 'tcp', |
45 |
|
|
Blocking => 1, |
46 |
|
|
ReuseAddr => 1, |
47 |
|
|
); |
48 |
|
|
|
49 |
|
|
warn "waiting for request on port ", $self->port, $/; |
50 |
|
|
|
51 |
|
|
while ( my $sock = $listen->accept ) { |
52 |
|
|
$sock->autoflush(1); |
53 |
|
|
|
54 |
|
|
warn "connection from ", $sock->peerhost, "\n"; |
55 |
|
|
|
56 |
dpavlin |
41 |
$self->sock( $sock ); # FIXME this will not work for multiple clients |
57 |
dpavlin |
42 |
while ( $self->process_request ) { |
58 |
|
|
warn "...another one bites a dust...\n"; |
59 |
|
|
} |
60 |
dpavlin |
40 |
|
61 |
dpavlin |
42 |
warn "...returning to accepting new connections\n"; |
62 |
dpavlin |
40 |
} |
63 |
|
|
} |
64 |
|
|
|
65 |
dpavlin |
48 |
=head2 process_request |
66 |
|
|
|
67 |
|
|
One request from client/response from server cycle. Call multiple times to |
68 |
|
|
facilitate brain-dead concept of adding state to stateless protocol like |
69 |
|
|
HTTP. |
70 |
|
|
|
71 |
|
|
=cut |
72 |
|
|
|
73 |
dpavlin |
40 |
sub process_request { |
74 |
|
|
my $self = shift; |
75 |
|
|
|
76 |
dpavlin |
42 |
my $sock = $self->sock || die "no sock?"; |
77 |
dpavlin |
40 |
|
78 |
|
|
die "not IO::Socket::INET but ", ref( $sock ) unless ( ref($sock) eq 'IO::Socket::INET' ); |
79 |
|
|
|
80 |
dpavlin |
42 |
if ( ! $sock->connected ) { |
81 |
|
|
warn "SOCKET NOT CONNECTED"; |
82 |
|
|
return 0; |
83 |
|
|
} |
84 |
|
|
|
85 |
dpavlin |
40 |
$sock->autoflush( 1 ); |
86 |
|
|
$sock->blocking( 1 ); |
87 |
|
|
|
88 |
|
|
### read the first line of response |
89 |
dpavlin |
49 |
my $line = $sock->getline; |
90 |
|
|
return $self->error(400, "No Data") unless ( defined $line ); |
91 |
dpavlin |
40 |
|
92 |
|
|
$line =~ s/[\r\n]+$//; |
93 |
|
|
if ($line !~ /^ (\w+) \ + (\S+) \ + (HTTP\/1.\d) $ /x) { |
94 |
dpavlin |
49 |
warn "ERROR: $line\n"; |
95 |
dpavlin |
40 |
return $self->error(400, "Bad request"); |
96 |
|
|
} |
97 |
|
|
my ($method, $req, $protocol) = ($1, $2, $3); |
98 |
dpavlin |
49 |
warn "<<<< ", $sock->peerhost, " - - [" . localtime() . "] \"$method $req $protocol\"\n"; |
99 |
dpavlin |
40 |
|
100 |
|
|
### read in other headers |
101 |
dpavlin |
42 |
$self->read_headers || return $self->error(400, "Strange headers"); |
102 |
dpavlin |
40 |
|
103 |
|
|
### do we support the type |
104 |
|
|
# if ($method !~ /GET|POST|HEAD/) { |
105 |
|
|
if ($method !~ /POST/) { |
106 |
|
|
return $self->error(400, "Unsupported Method"); |
107 |
|
|
} |
108 |
|
|
|
109 |
dpavlin |
30 |
my $chunk; |
110 |
|
|
my $transfer_encoding = $self->header('Transfer-Encoding'); |
111 |
|
|
|
112 |
|
|
if ( $transfer_encoding && $transfer_encoding =~ qr/^chunked/i ) { |
113 |
|
|
|
114 |
dpavlin |
31 |
my $len = 0; |
115 |
dpavlin |
40 |
|
116 |
dpavlin |
30 |
do { |
117 |
|
|
|
118 |
dpavlin |
40 |
warn "get chunk len\n" if $self->debug; |
119 |
|
|
|
120 |
|
|
my $hex; |
121 |
|
|
do { |
122 |
|
|
$hex = $sock->getline; |
123 |
|
|
$hex =~ s/[\n\r]+$//; |
124 |
|
|
} until ( $hex ne '' ); |
125 |
dpavlin |
30 |
|
126 |
dpavlin |
40 |
die "chunk size not valid hex: $hex" unless ( $hex =~ m/^[0-9a-f]+$/i); |
127 |
|
|
$len = hex( $hex ); |
128 |
dpavlin |
30 |
|
129 |
dpavlin |
40 |
warn "getting chunk of $len bytes\n" if $self->debug; |
130 |
dpavlin |
30 |
|
131 |
dpavlin |
40 |
$sock->read( my $buff, $len ); |
132 |
|
|
$chunk .= $buff; |
133 |
dpavlin |
30 |
|
134 |
dpavlin |
40 |
warn "--- $len bytes: --=>||$buff||<=--\n"; |
135 |
dpavlin |
30 |
|
136 |
dpavlin |
40 |
} while ( $len > 0 ); |
137 |
dpavlin |
49 |
my $sep = $sock->getline; |
138 |
|
|
die "expected separator, not ", dump( $sep ) if ( $sep !~ m/^[\n\r]+$/ ); |
139 |
dpavlin |
30 |
|
140 |
dpavlin |
40 |
} else { |
141 |
|
|
die "right now, we support only Transfer-Encoding: chunked"; |
142 |
|
|
} |
143 |
dpavlin |
34 |
|
144 |
dpavlin |
49 |
my $size = length( $chunk ); |
145 |
dpavlin |
34 |
|
146 |
dpavlin |
49 |
warn "<<< " . $sock->peerhost . " [" . localtime() . "] request $size bytes\n"; |
147 |
dpavlin |
34 |
|
148 |
dpavlin |
36 |
my $state; |
149 |
|
|
|
150 |
dpavlin |
49 |
if ( $size > 0 ) { |
151 |
dpavlin |
30 |
|
152 |
dpavlin |
49 |
die "no SOAPAction header in ",dump($chunk) unless defined ( $self->header('SOAPAction') ); |
153 |
dpavlin |
34 |
|
154 |
dpavlin |
49 |
|
155 |
|
|
if ( $chunk ) { |
156 |
|
|
warn "## request chunk: ",length($chunk)," bytes\n$chunk\n" if $self->debug; |
157 |
|
|
|
158 |
|
|
$state = CWMP::Request->parse( $chunk ); |
159 |
|
|
|
160 |
|
|
warn "acquired state = ", dump( $state ), "\n"; |
161 |
|
|
|
162 |
|
|
$self->state( $state ); |
163 |
|
|
|
164 |
|
|
} else { |
165 |
|
|
warn "empty request\n"; |
166 |
|
|
} |
167 |
|
|
|
168 |
dpavlin |
36 |
} else { |
169 |
dpavlin |
49 |
$state = $self->state; |
170 |
|
|
warn "last request state = ", dump( $state ), "\n"; |
171 |
dpavlin |
34 |
} |
172 |
|
|
|
173 |
dpavlin |
35 |
my $response = CWMP::Response->new({ debug => $self->debug }); |
174 |
dpavlin |
34 |
|
175 |
dpavlin |
44 |
$sock->send(join("\r\n", |
176 |
|
|
'HTTP/1.1 200 OK', |
177 |
|
|
'Content-Type: text/xml; charset="utf-8"', |
178 |
|
|
'Server: AcmeCWMP/42', |
179 |
dpavlin |
49 |
'SOAPServer: AcmeCWMP/42' |
180 |
dpavlin |
43 |
)); |
181 |
dpavlin |
30 |
|
182 |
dpavlin |
43 |
$sock->send( "Set-Cookie: ID=" . $state->{ID} . "; path=/\r\n" ) if ( $state->{ID} ); |
183 |
dpavlin |
40 |
|
184 |
|
|
my $xml = ''; |
185 |
|
|
|
186 |
dpavlin |
36 |
if ( my $dispatch = $state->{_dispatch} ) { |
187 |
|
|
if ( $response->can( $dispatch ) ) { |
188 |
|
|
warn ">>> dispatching to $dispatch\n"; |
189 |
dpavlin |
40 |
$xml = $response->$dispatch( $state ) . "\r\n"; |
190 |
|
|
warn "## response payload: ",length($xml)," bytes\n$xml\n"; |
191 |
dpavlin |
36 |
} else { |
192 |
|
|
confess "can't dispatch to $dispatch"; |
193 |
|
|
} |
194 |
|
|
} else { |
195 |
|
|
warn ">>> empty response\n"; |
196 |
|
|
} |
197 |
dpavlin |
40 |
|
198 |
dpavlin |
43 |
$sock->send( "Content-Length: " . length( $xml ) . "\r\n\r\n" ); |
199 |
dpavlin |
44 |
$sock->send( $xml ) or die "can't send response"; |
200 |
dpavlin |
40 |
|
201 |
|
|
warn "### request over"; |
202 |
|
|
|
203 |
dpavlin |
30 |
}; |
204 |
|
|
|
205 |
dpavlin |
48 |
=head2 read_headers |
206 |
dpavlin |
40 |
|
207 |
dpavlin |
48 |
parse headers from request |
208 |
|
|
|
209 |
|
|
=cut |
210 |
|
|
|
211 |
dpavlin |
40 |
sub read_headers { |
212 |
|
|
my $self = shift; |
213 |
|
|
|
214 |
|
|
$self->{headers} = {}; |
215 |
|
|
|
216 |
dpavlin |
42 |
while (defined($_ = $self->sock->getline)) { |
217 |
dpavlin |
40 |
s/[\r\n]+$//; |
218 |
|
|
last unless length $_; |
219 |
|
|
warn "-- $_\n"; |
220 |
|
|
return 0 if ! /^ ([\w\-]+) :[\ \t]* (.*) $/x; |
221 |
|
|
$self->{headers}->{$1} = $2; |
222 |
|
|
} |
223 |
|
|
|
224 |
|
|
return 1; |
225 |
|
|
} |
226 |
|
|
|
227 |
dpavlin |
48 |
=head2 header |
228 |
|
|
|
229 |
|
|
Getter for specific header |
230 |
|
|
|
231 |
|
|
$self->header('Cookies'); |
232 |
|
|
|
233 |
|
|
=cut |
234 |
|
|
|
235 |
dpavlin |
40 |
sub header { |
236 |
|
|
my $self = shift; |
237 |
|
|
my $header = shift || die "no header?"; |
238 |
|
|
if ( defined( $self->{headers}->{$header} )) { |
239 |
|
|
return $self->{headers}->{$header}; |
240 |
|
|
} else { |
241 |
|
|
return; |
242 |
|
|
} |
243 |
|
|
} |
244 |
|
|
|
245 |
dpavlin |
48 |
=head2 error |
246 |
|
|
|
247 |
|
|
return $self->error( 501, 'System error' ); |
248 |
|
|
|
249 |
|
|
=cut |
250 |
|
|
|
251 |
dpavlin |
44 |
sub error { |
252 |
dpavlin |
40 |
my ($self, $number, $msg) = @_; |
253 |
dpavlin |
44 |
$msg ||= 'ERROR'; |
254 |
|
|
$self->sock->send( "HTTP/1.1 $number $msg\r\n" ); |
255 |
dpavlin |
40 |
warn "Error - $number - $msg\n"; |
256 |
dpavlin |
48 |
return 0; # close connection |
257 |
dpavlin |
40 |
} |
258 |
|
|
|
259 |
dpavlin |
30 |
1; |