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|
package XML::RPC;
use strict;
use XML::TreePP;
use Data::Dumper;
use vars qw($VERSION $faultCode);
no strict 'refs';
$VERSION = 0.5;
sub new {
my $package = shift;
my $self = { };
bless $self, $package;
$self->{url} = shift;
$self->{tpp} = XML::TreePP->new(@_);
return $self;
}
sub call {
my $self = shift;
my ( $methodname, @params ) = @_;
die 'no url' if ( !$self->{url} );
$faultCode = 0;
my $xml = $self->create_call_xml( $methodname, @params );
#print STDERR $xml;
my $result = $self->{tpp}->parsehttp(
POST => $self->{url},
$xml,
{
'Content-Type' => 'text/xml',
'User-Agent' => 'XML-RPC/' . $VERSION,
'Content-Length' => length($xml)
}
);
my @data = $self->unparse_response($result);
return @data == 1 ? $data[0] : @data;
}
sub receive {
my $self = shift;
my $result = eval {
my $xml = shift || die 'no xml';
my $handler = shift || die 'no handler';
my $hash = $self->{tpp}->parse($xml);
my ( $methodname, @params ) = $self->unparse_call($hash);
$self->create_response_xml( $handler->( $methodname, @params ) );
};
return $self->create_fault_xml($@) if ($@);
return $result;
}
sub create_fault_xml {
my $self = shift;
my $error = shift;
chomp($error);
return $self->{tpp}
->write( { methodResponse => { fault => $self->parse( { faultString => $error, faultCode => $faultCode } ) } } );
}
sub create_call_xml {
my $self = shift;
my ( $methodname, @params ) = @_;
return $self->{tpp}->write(
{
methodCall => {
methodName => $methodname,
params => { param => [ map { $self->parse($_) } @params ] }
}
}
);
}
sub create_response_xml {
my $self = shift;
my @params = @_;
return $self->{tpp}->write( { methodResponse => { params => { param => [ map { $self->parse($_) } @params ] } } } );
}
sub parse {
my $self = shift;
my $p = shift;
my $result;
if ( ref($p) eq 'HASH' ) {
$result = $self->parse_struct($p);
}
elsif ( ref($p) eq 'ARRAY' ) {
$result = $self->parse_array($p);
}
else {
$result = $self->parse_scalar($p);
}
return { value => $result };
}
sub parse_scalar {
my $self = shift;
my $scalar = shift;
local $^W = undef;
if ( ( $scalar =~ m/^[\-+]?\d+$/ )
&& ( abs($scalar) <= ( 0xffffffff >> 1 ) ) )
{
return { i4 => $scalar };
}
elsif ( $scalar =~ m/^[\-+]?\d+\.\d+$/ ) {
return { double => $scalar };
}
else {
return { string => \$scalar };
}
}
sub parse_struct {
my $self = shift;
my $hash = shift;
my @members;
while ( my ( $k, $v ) = each(%$hash) ) {
push @members, { name => $k, %{ $self->parse($v) } };
}
return { struct => { member => \@members } };
}
sub parse_array {
my $self = shift;
my $array = shift;
return { array => { data => { value => [ map { $self->parse($_)->{value} } $self->list($array) ] } } };
}
sub unparse_response {
my $self = shift;
my $hash = shift;
my $response = $hash->{methodResponse} || die 'no data';
if ( $response->{fault} ) {
return $self->unparse_value( $response->{fault}->{value} );
}
else {
return map { $self->unparse_value( $_->{value} ) } $self->list( $response->{params}->{param} );
}
}
sub unparse_call {
my $self = shift;
my $hash = shift;
my $response = $hash->{methodCall} || die 'no data';
my $methodname = $response->{methodName};
my @args =
map { $self->unparse_value( $_->{value} ) } $self->list( $response->{params}->{param} );
return ( $methodname, @args );
}
sub unparse_value {
my $self = shift;
my $value = shift;
my $result;
return $value if ( ref($value) ne 'HASH' ); # for unspecified params
if ( $value->{struct} ) {
$result = $self->unparse_struct( $value->{struct} );
return !%$result
? undef
: $result; # fix for empty hashrefs from XML::TreePP
}
elsif ( $value->{array} ) {
return $self->unparse_array( $value->{array} );
}
else {
return $self->unparse_scalar($value);
}
}
sub unparse_scalar {
my $self = shift;
my $scalar = shift;
my ($result) = values(%$scalar);
return ( ref($result) eq 'HASH' && !%$result )
? undef
: $result; # fix for empty hashrefs from XML::TreePP
}
sub unparse_struct {
my $self = shift;
my $struct = shift;
return { map { $_->{name} => $self->unparse_value( $_->{value} ) } $self->list( $struct->{member} ) };
}
sub unparse_array {
my $self = shift;
my $array = shift;
my $data = $array->{data};
return [ map { $self->unparse_value($_) } $self->list( $data->{value} ) ];
}
sub list {
my $self = shift;
my $param = shift;
return () if ( !$param );
return @$param if ( ref($param) eq 'ARRAY' );
return ($param);
}
1;
|
