lib/CWMP/Request.pm

package CWMP::Request;

use warnings;
use strict;

use XML::Rules;
use CWMP::Tree;
use Data::Dump qw/dump/;
use Carp qw/confess cluck/;
use Class::Trigger;

=head1 NAME

CWMP::Request - parse SOAP request metods

=head1 CPE metods

All methods described below call triggers with same name

=cut

my $tree = CWMP::Tree->new({ debug => 0 });

our $state;     # FIXME check this!

my $rules =  [
                #_default => 'content trim',
                x_default => sub {
                        my ($tag_name, $tag_hash, $context, $parent_data) = @_;
                        warn dump( $tag_name, $tag_hash, $context );
                },
                'ID' => sub {
                        my ($tag_name, $tag_hash, $context, $parent_data) = @_;
                        $state->{ID} = $tag_hash->{_content};
                },

                'DeviceId' => sub {
                        my ($tag_name, $tag_hash, $context, $parent_data) = @_;
                        foreach my $name ( keys %$tag_hash ) {
                                next if $name eq '_content';
                                my $key = $name;
                                $key =~ s/^\w+://;      # stip namespace
                                $state->{DeviceID}->{ $key } = _tag( $tag_hash, $name, '_content' );
                        }
                },
                'EventStruct' => sub {
                        my ($tag_name, $tag_hash, $context, $parent_data) = @_;
                        push @{ $state->{EventStruct} }, $tag_hash->{EventCode}->{_content};
                },
                qr/(MaxEnvelopes|CurrentTime|RetryCount)/ => sub {
                        my ($tag_name, $tag_hash, $context, $parent_data) = @_;
                        $state->{$tag_name} = $tag_hash->{_content};
                },
                'ParameterValueStruct' => sub {
                        my ($tag_name, $tag_hash, $context, $parent_data) = @_;
                        # Name/Value tags must be case insnesitive
                        my $value = (grep( /value/i, keys %$tag_hash ))[0];
                        $state->{Parameter}->{ _tag($tag_hash, 'Name', '_content') } = _tag($tag_hash, 'Value', '_content' );
                        $state->{_trigger} = 'ParameterValue';
                },

];

=head2 Inform

Generate InformResponse to CPE

=cut

push @$rules,
        'Inform' => sub {
                $state->{_dispatch} = 'InformResponse';         # what reponse to call
                $state->{_trigger} = 'Inform';
        };

=head2 GetRPCMethodsResponse

=cut

push @$rules,
                qr/^(?:^\w+:)*string$/ => 'content array',
                'MethodList' => sub {
                        my ($tag_name, $tag_hash, $context, $parent_data) = @_;
                        $state->{MethodList} = _tag( $tag_hash, 'string' );
                        $state->{_trigger} = 'GetRPCMethodsResponse';
                };

=head2 GetParameterNamesResponse

=cut

push @$rules,
                'ParameterInfoStruct' => sub {
                        my ($tag_name, $tag_hash, $context, $parent_data) = @_;
                        my $name = _tag($tag_hash, 'Name', '_content');
                        my $writable = _tag($tag_hash, 'Writable', '_content' );

                        confess "need state" unless ( $state ); # don't remove!

                        # XXX dragons ahead: convert name to tree rewriting it into perl
                        my $s = '$state->{ParameterInfo}->' . $tree->name2perl( $name ) . "->{writable} = $writable;";
                        eval "$s";
                        confess "can't eval $s : $@" if ($@);

                        #warn "## state = dump( $state ), "\n";

                        $state->{_trigger} = 'GetParameterNamesResponse';
                };
        
=head2 Fault

=cut

push @$rules,
                'Fault' => sub {
                        my ($tag_name, $tag_hash, $context, $parent_data) = @_;
                        $state->{Fault} = {
                                FaultCode => _tag( $tag_hash, 'FaultCode', '_content' ),
                                FaultString => _tag( $tag_hash, 'FaultString', '_content' ),
                        };
                        warn "FAULT: ", $state->{Fault}->{FaultCode}, " ", $state->{Fault}->{FaultString}, "\n";
                        $state->{_trigger} = 'Fault';
                };

my $parser = XML::Rules->new(
#       start_rules => [
#               '^division_name,fax' => 'skip',
#       ],
        namespaces => {
                'http://schemas.xmlsoap.org/soap/envelope/' => 'soapenv',
                'http://schemas.xmlsoap.org/soap/encoding/' => 'soap',
                'http://www.w3.org/2001/XMLSchema' => 'xsd',
                'http://www.w3.org/2001/XMLSchema-instance' => 'xsi',
                'urn:dslforum-org:cwmp-1-0' => '',
        },
        rules => $rules,
);

=head1 METHODS

=head2 parse

  my $state = CWMP::Request->parse( "<soap>request</soap>" );

=cut

sub parse {
        my $self = shift;

        my $xml = shift || confess "no xml?";

        $state = {};
        $parser->parsestring( $xml );
        if ( my $trigger = $state->{_trigger} ) {
                warn "### call_trigger( $trigger )\n";
                $self->call_trigger( $trigger, $state );
        }
        # XXX don't propagate _trigger (useful?)
        delete( $state->{_trigger} );
        return $state;
}

=head2 _tag

Get value of tag. Tag name is case insensitive (don't ask why),
we ignore namespaces and can take optional C<sub_key>
(usually C<_content>).

  _tag( $tag_hash, $name, $sub_key )

=cut

sub _tag {
        my ( $tag_hash, $name, $sub_key ) = @_;
        confess "need hash as first argument" unless ( ref $tag_hash eq 'HASH' );
        $name = (grep { m/^(?:\w+:)*$name$/i } keys %$tag_hash )[0];
#       $name =~ s/^\w+://;
        if ( defined $tag_hash->{$name} ) {
                if ( ! defined $sub_key ) {
                        return $tag_hash->{$name};
                } elsif ( defined $tag_hash->{$name}->{$sub_key} ) {
                        return $tag_hash->{$name}->{$sub_key};
                } else {
                        return if ( $name =~ m/^value$/i );
                        warn "can't find '$name/$sub_key' in ", dump( $tag_hash );
                        return;
                }
        } else {
                warn "can't find '$name' in ", dump( $tag_hash );
                return;
        }
}

1;
1	package CWMP::Request;
2
3	use warnings;
4	use strict;
5
6	use XML::Rules;
7	use CWMP::Tree;
8	use Data::Dump qw/dump/;
9	use Carp qw/confess cluck/;
10	use Class::Trigger;
11
12	=head1 NAME
13
14	CWMP::Request - parse SOAP request metods
15
16	=head1 CPE metods
17
18	All methods described below call triggers with same name
19
20	=cut
21
22	my $tree = CWMP::Tree->new({ debug => 0 });
23
24	our $state; # FIXME check this!
25
26	my $rules = [
27	#_default => 'content trim',
28	x_default => sub {
29	my ($tag_name, $tag_hash, $context, $parent_data) = @_;
30	warn dump( $tag_name, $tag_hash, $context );
31	},
32	'ID' => sub {
33	my ($tag_name, $tag_hash, $context, $parent_data) = @_;
34	$state->{ID} = $tag_hash->{_content};
35	},
36
37	'DeviceId' => sub {
38	my ($tag_name, $tag_hash, $context, $parent_data) = @_;
39	foreach my $name ( keys %$tag_hash ) {
40	next if $name eq '_content';
41	my $key = $name;
42	$key =~ s/^\w+://; # stip namespace
43	$state->{DeviceID}->{ $key } = _tag( $tag_hash, $name, '_content' );
44	}
45	},
46	'EventStruct' => sub {
47	my ($tag_name, $tag_hash, $context, $parent_data) = @_;
48	push @{ $state->{EventStruct} }, $tag_hash->{EventCode}->{_content};
49	},
50	qr/(MaxEnvelopes\|CurrentTime\|RetryCount)/ => sub {
51	my ($tag_name, $tag_hash, $context, $parent_data) = @_;
52	$state->{$tag_name} = $tag_hash->{_content};
53	},
54	'ParameterValueStruct' => sub {
55	my ($tag_name, $tag_hash, $context, $parent_data) = @_;
56	# Name/Value tags must be case insnesitive
57	my $value = (grep( /value/i, keys %$tag_hash ))[0];
58	$state->{Parameter}->{ _tag($tag_hash, 'Name', '_content') } = _tag($tag_hash, 'Value', '_content' );
59	$state->{_trigger} = 'ParameterValue';
60	},
61
62	];
63
64	=head2 Inform
65
66	Generate InformResponse to CPE
67
68	=cut
69
70	push @$rules,
71	'Inform' => sub {
72	$state->{_dispatch} = 'InformResponse'; # what reponse to call
73	$state->{_trigger} = 'Inform';
74	};
75
76	=head2 GetRPCMethodsResponse
77
78	=cut
79
80	push @$rules,
81	qr/^(?:^\w+:)*string$/ => 'content array',
82	'MethodList' => sub {
83	my ($tag_name, $tag_hash, $context, $parent_data) = @_;
84	$state->{MethodList} = _tag( $tag_hash, 'string' );
85	$state->{_trigger} = 'GetRPCMethodsResponse';
86	};
87
88	=head2 GetParameterNamesResponse
89
90	=cut
91
92	push @$rules,
93	'ParameterInfoStruct' => sub {
94	my ($tag_name, $tag_hash, $context, $parent_data) = @_;
95	my $name = _tag($tag_hash, 'Name', '_content');
96	my $writable = _tag($tag_hash, 'Writable', '_content' );
97
98	confess "need state" unless ( $state ); # don't remove!
99
100	# XXX dragons ahead: convert name to tree rewriting it into perl
101	my $s = '$state->{ParameterInfo}->' . $tree->name2perl( $name ) . "->{writable} = $writable;";
102	eval "$s";
103	confess "can't eval $s : $@" if ($@);
104
105	#warn "## state = dump( $state ), "\n";
106
107	$state->{_trigger} = 'GetParameterNamesResponse';
108	};
109
110	=head2 Fault
111
112	=cut
113
114	push @$rules,
115	'Fault' => sub {
116	my ($tag_name, $tag_hash, $context, $parent_data) = @_;
117	$state->{Fault} = {
118	FaultCode => _tag( $tag_hash, 'FaultCode', '_content' ),
119	FaultString => _tag( $tag_hash, 'FaultString', '_content' ),
120	};
121	warn "FAULT: ", $state->{Fault}->{FaultCode}, " ", $state->{Fault}->{FaultString}, "\n";
122	$state->{_trigger} = 'Fault';
123	};
124
125	my $parser = XML::Rules->new(
126	# start_rules => [
127	# '^division_name,fax' => 'skip',
128	# ],
129	namespaces => {
130	'http://schemas.xmlsoap.org/soap/envelope/' => 'soapenv',
131	'http://schemas.xmlsoap.org/soap/encoding/' => 'soap',
132	'http://www.w3.org/2001/XMLSchema' => 'xsd',
133	'http://www.w3.org/2001/XMLSchema-instance' => 'xsi',
134	'urn:dslforum-org:cwmp-1-0' => '',
135	},
136	rules => $rules,
137	);
138
139	=head1 METHODS
140
141	=head2 parse
142
143	my $state = CWMP::Request->parse( "<soap>request</soap>" );
144
145	=cut
146
147	sub parse {
148	my $self = shift;
149
150	my $xml = shift \|\| confess "no xml?";
151
152	$state = {};
153	$parser->parsestring( $xml );
154	if ( my $trigger = $state->{_trigger} ) {
155	warn "### call_trigger( $trigger )\n";
156	$self->call_trigger( $trigger, $state );
157	}
158	# XXX don't propagate _trigger (useful?)
159	delete( $state->{_trigger} );
160	return $state;
161	}
162
163	=head2 _tag
164
165	Get value of tag. Tag name is case insensitive (don't ask why),
166	we ignore namespaces and can take optional C<sub_key>
167	(usually C<_content>).
168
169	_tag( $tag_hash, $name, $sub_key )
170
171	=cut
172
173	sub _tag {
174	my ( $tag_hash, $name, $sub_key ) = @_;
175	confess "need hash as first argument" unless ( ref $tag_hash eq 'HASH' );
176	$name = (grep { m/^(?:\w+:)*$name$/i } keys %$tag_hash )[0];
177	# $name =~ s/^\w+://;
178	if ( defined $tag_hash->{$name} ) {
179	if ( ! defined $sub_key ) {
180	return $tag_hash->{$name};
181	} elsif ( defined $tag_hash->{$name}->{$sub_key} ) {
182	return $tag_hash->{$name}->{$sub_key};
183	} else {
184	return if ( $name =~ m/^value$/i );
185	warn "can't find '$name/$sub_key' in ", dump( $tag_hash );
186	return;
187	}
188	} else {
189	warn "can't find '$name' in ", dump( $tag_hash );
190	return;
191	}
192	}
193
194	1;