lib/CWMP/Request.pm

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