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|
package Server;
use IO::Select;
use IO::Socket;
use strict;
use Carp;
use Sys::Syslog;
use Crypt::HCE_SHA;
my @response;
my $data;
sub new {
my $class = shift;
my $self = {};
bless $self, $class;
if ((scalar(@_) % 2) != 0) {
croak "incorrect number of parameters";
}
while (@_) {
my $key = shift(@_);
my $value = shift(@_);
$self->{$key} = $value;
}
$self->_initialize;
return $self;
}
sub _initialize {
my $self = shift;
if (!defined($self->{'Server'})) {
croak "Server not initialized properly : Server parameter missing";
}
if (!defined($self->{'Port'})) {
croak "Server not initialized properly : Port parameter missing";
}
if (!defined($self->{'Queue'})) {
croak "Server not initialized properly : Queue parameter missing";
}
if (!eval {$self->{'Socket'} = IO::Socket::INET->new(LocalAddr => $self->{'Server'},
LocalPort => $self->{'Port'},
Proto => 'tcp',
Reuse => 1,
Listen => $self->{'Queue'}
); })
{
croak "Server couldn't establish a port on $self->{'Server'}";
}
$self->{'Socket'}->autoflush(1);
delete $self->{'HCE'};
$self->{'Select'} = IO::Select->new($self->{'Socket'});
}
sub accept {
my $self = shift;
my ($time) = @_; # how long to wait
my (@ready_to_read, $size);
@ready_to_read = $self->{'Select'}->can_read($time);
$size = scalar(@ready_to_read);
if ($size == 1) {
$self->{'Connect'} = $self->{'Socket'}->accept;
$self->{'Connect'}->autoflush(1); # don't buffer return messages
} else {
delete $self->{'Connect'};
}
return $size;
}
sub close {
my $self = shift;
$self->{'Connect'}->close;
delete $self->{'Connect'};
delete $self->{'HCE'};
return 0;
}
sub send {
my $self = shift;
my @items = @_;
my ($item, $enc_item);
if (!defined($self->{'Connect'})) {
croak "No Connection established: did you accept?";
}
if (defined($self->{'HCE'})) {
foreach $item (@items) {
# syslog('debug','Server encode: %s',$item);
$enc_item = $self->{'HCE'}->hce_block_encode_mime($item);
# syslog('debug','Server sending: %s', $enc_item);
print { $self->{'Connect'} } "$enc_item\n";
}
$enc_item = $self->{'HCE'}->hce_block_encode_mime("+END_OF_LIST");
print { $self->{'Connect'} } "$enc_item\n";
} else {
foreach $item (@items) {
# syslog('debug','Server sending: %s',$item);
print { $self->{'Connect'} } "$item\n";
}
}
return 0;
}
sub recv {
my $self = shift;
my ($data, $dec_data, $fh);
if (!defined($self->{'Connect'})) {
croak "No Connection established: did you accept?";
}
$fh = $self->{'Connect'};
undef(@response);
if (!defined($self->{'SKey'})) {
while (<$fh>) {
chomp;
# syslog('debug','Server recv: %s', $_);
tr/\n\r\t//d;
last if ($_ eq '+END_OF_LIST');
push @response, $_;
};
if (!defined(@response)) {
return;
} else {
return @response;
}
}
if (defined($self->{'HCE'})) {
while (<$fh>) {
chomp;
# syslog('debug','Server recv: %s',$_);
$dec_data = $self->{'HCE'}->hce_block_decode_mime($_);
$dec_data =~ tr/\n\r\t//d;
# syslog('debug','Server decode: %s', $dec_data);
last if ($dec_data eq "+END_OF_LIST");
push @response, $dec_data;
};
if (!defined(@response)) {
return;
} else {
return @response;
};
} else {
$_ = <$fh>; # get RKey
chomp;
$self->{'RKey'} = $_;
$self->{'HCE'} = Crypt::HCE_SHA->new($self->{'SKey'}, $self->{'RKey'});
return $self->recv();
}
}
1;
__END__
#------- POD ------
|
