childDAORefund.sol

contract DAO {
    function balanceOf(address addr) returns (uint);
    function transferFrom(address from, address to, uint balance) returns (bool);
    uint public totalSupply;
    function getNewDAOAddress(uint _proposalID) constant returns(address _newDAO);
}

/**
 * @title trustedChildRefund
 * @author Paul Szczesny
 * A simple refund contract for trusted childDAOs affected by the hard fork.
 * Based on the official WithdrawDAO contract found here: https://etherscan.io/address/0xbf4ed7b27f1d666546e30d74d50d173d20bca754#code
 */
contract trustedChildRefund {

  DAO constant public mainDAO = DAO(0xbb9bc244d798123fde783fcc1c72d3bb8c189413);
  uint[] constant trustedProposals = [7, 10, 16, 20, 23, 26, 27, 28, 29, 31, 34, 37, 39, 41, 44, 52, 54, 56, 57, 60, 61, 63, 64, 65, 66];
  mapping (uint => DAO) public whiteList;

  function trustedChildRefund() {
      for(uint i=0; i<trustedProposals.length; i++) {
          uint proposalId = trustedProposals[i];
          whiteList[proposalId] = mainDAO.getNewDAOAddress(proposalId);
      }
  }

  /**
   * Function call to refund ETH by burning childDao tokens.
   * @param proposalId The split proposal ID which created the childDao
   * @dev This requires that the token-holder authorizes this contract's address using the approve() function.
   */
  function refund(uint proposalId) {
    //Check the token balance
    uint balance = whiteList[proposalId].balanceOf(msg.sender);

    // Transfer childDao tokens first, then send Ether back in return
    if (!whiteList[proposalId].transferFrom(msg.sender, this, balance) || !msg.sender.send(balance))
      throw;
  }

}