Massive improvements on efficiency, robustness, security, reliability and more

1 files changed, 72 insertions, 0 deletions

diff --git a/lib/MasterServer/TCP/UCCAppletQuery.pm b/lib/MasterServer/TCP/UCCAppletQuery.pm
new file mode 100755
index 0000000..e3eb587
--- /dev/null
+++ b/lib/MasterServer/TCP/UCCAppletQuery.pm
@@ -0,0 +1,72 @@
+
+package MasterServer::TCP::UCCAppletQuery;
+
+use strict;
+use warnings;
+use AnyEvent;
+use AnyEvent::Handle;
+use Exporter 'import';
+
+our @EXPORT = qw| query_applet |;
+
+################################################################################
+## The UCC Applet (Epic Megagames, Inc.) functions as a master server for one 
+## single game. However, it does not always follow the defined protocol.
+## This module connects with UCC masterserver applets to receive the list.
+################################################################################
+sub query_applet {
+  my ($self, $ms) = @_;
+  
+  # be nice to notify
+  $self->log("tcp","start querying $ms->{ip}:$ms->{port} for '$ms->{game}' games");
+
+  # list to store all IPs in.
+  my $master_list = "";
+  
+  # connection handle
+  my $handle; 
+  $handle = new AnyEvent::Handle(
+    connect  => [$ms->{ip} => $ms->{port}],
+    timeout  => 5,
+    poll     => 'r',
+    on_error => sub {$self->log("error", "$! on $ms->{ip}:$ms->{port}."); $handle->destroy;},
+    on_eof   => sub {$self->process_ucc_applet_query($master_list, $ms);  $handle->destroy;},
+    on_read  => sub {
+    
+      # receive and clear buffer
+      my $m = $_[0]->rbuf;
+      $_[0]->rbuf = "";
+
+      # remove string terminator
+      chop $m if $m =~ m/secure/;
+          
+      # part 1: receive \basic\\secure\$key
+      if ($m =~ m/\\basic\\\\secure\\/) {
+
+        # received data
+        my %r;
+        $m =~ s/\\([^\\]+)\\([^\\]+)/$r{$1}=$2/eg;
+
+        # respond to challenge
+        my $validate = $self->validate_string(gamename => $ms->{game},
+                                              enctype  => $r{enctype}||0,
+                                              secure   => $r{secure});
+
+        # send response
+        $handle->push_write("\\gamename\\$ms->{game}\\location\\0\\validate\\$validate\\final\\");
+        
+        # part 3: also request the list \list\gamename\ut -- skipped in UCC applets
+        $handle->push_write("\\list\\\\gamename\\$ms->{game}\\final\\");
+        
+      }
+      
+      # part 3b: receive the entire list in multiple steps.
+      if ($m =~ m/\\ip\\/) {
+        # add buffer to the list
+        $master_list .= $m;
+      }
+    }
+  );
+}
+
+1;