EOSBet before hacked

#define EOSIO_ABI_EX( TYPE, MEMBERS )
extern "C" {
   void apply( uint64_t receiver, uint64_t code, uint64_t action ) {
      auto self = receiver;
      if( code == self || code == N(eosio.token) || action == N(onerror) ) {
         TYPE thiscontract( self );
         switch( action ) {
            EOSIO_API( TYPE, MEMBERS )
         }
         /* does not allow destructor of thiscontract to run: eosio_exit(0); */
      }
   }
}

void transfer(uint64_t sender, uint64_t receiver) {

    auto transfer_data = unpack_action_data<st_transfer>();

    if (transfer_data.from == _self || transfer_data.from == N(eosbetcasino)){
        return;
    }
    // store all bet info to table
    ...
}