path: root/test/contracts/AuctionRegistrar.cpp

/*
    This file is part of cpp-ethereum.

    cpp-ethereum is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    cpp-ethereum is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
*/
/**
 * @author Christian <c@ethdev.com>
 * @date 2015
 * Tests for a fixed fee registrar contract.
 */

#include <string>
#include <tuple>
#include <boost/test/unit_test.hpp>
#include <libdevcore/ABI.h>
#include <test/libsolidity/SolidityExecutionFramework.h>

using namespace std;

namespace dev
{
namespace solidity
{
namespace test
{

namespace
{

static char const* registrarCode = R"DELIMITER(
pragma solidity ^0.3.5;

contract NameRegister {
    function addr(string _name) constant returns (address o_owner);
    function name(address _owner) constant returns (string o_name);
}

contract Registrar is NameRegister {
    event Changed(string indexed name);
    event PrimaryChanged(string indexed name, address indexed addr);

    function owner(string _name) constant returns (address o_owner);
    function addr(string _name) constant returns (address o_address);
    function subRegistrar(string _name) constant returns (address o_subRegistrar);
    function content(string _name) constant returns (bytes32 o_content);

    function name(address _owner) constant returns (string o_name);
}

contract AuctionSystem {
    event AuctionEnded(string indexed _name, address _winner);
    event NewBid(string indexed _name, address _bidder, uint _value);

    /// Function that is called once an auction ends.
    function onAuctionEnd(string _name) internal;

    function bid(string _name, address _bidder, uint _value) internal {
        var auction = m_auctions[_name];
        if (auction.endDate > 0 && now > auction.endDate)
        {
            AuctionEnded(_name, auction.highestBidder);
            onAuctionEnd(_name);
            delete m_auctions[_name];
            return;
        }
        if (msg.value > auction.highestBid)
        {
            // new bid on auction
            auction.secondHighestBid = auction.highestBid;
            auction.sumOfBids += _value;
            auction.highestBid = _value;
            auction.highestBidder = _bidder;
            auction.endDate = now + c_biddingTime;

            NewBid(_name, _bidder, _value);
        }
    }

    uint constant c_biddingTime = 7 days;

    struct Auction {
        address highestBidder;
        uint highestBid;
        uint secondHighestBid;
        uint sumOfBids;
        uint endDate;
    }
    mapping(string => Auction) m_auctions;
}

contract GlobalRegistrar is Registrar, AuctionSystem {
    struct Record {
        address owner;
        address primary;
        address subRegistrar;
        bytes32 content;
        uint renewalDate;
    }

    uint constant c_renewalInterval = 1 years;
    uint constant c_freeBytes = 12;

    function Registrar() {
        // TODO: Populate with hall-of-fame.
    }

    function() {
        // prevent people from just sending funds to the registrar
        throw;
    }

    function onAuctionEnd(string _name) internal {
        var auction = m_auctions[_name];
        var record = m_toRecord[_name];
        var previousOwner = record.owner;
        record.renewalDate = now + c_renewalInterval;
        record.owner = auction.highestBidder;
        Changed(_name);
        if (previousOwner != 0) {
            if (!record.owner.send(auction.sumOfBids - auction.highestBid / 100))
                throw;
        } else {
            if (!auction.highestBidder.send(auction.highestBid - auction.secondHighestBid))
                throw;
        }
    }

    function reserve(string _name) external {
        if (bytes(_name).length == 0)
            throw;
        bool needAuction = requiresAuction(_name);
        if (needAuction)
        {
            if (now < m_toRecord[_name].renewalDate)
                throw;
            bid(_name, msg.sender, msg.value);
        } else {
            Record record = m_toRecord[_name];
            if (record.owner != 0)
                throw;
            m_toRecord[_name].owner = msg.sender;
            Changed(_name);
        }
    }

    function requiresAuction(string _name) internal returns (bool) {
        return bytes(_name).length < c_freeBytes;
    }

    modifier onlyrecordowner(string _name) { if (m_toRecord[_name].owner == msg.sender) _; }

    function transfer(string _name, address _newOwner) onlyrecordowner(_name) {
        m_toRecord[_name].owner = _newOwner;
        Changed(_name);
    }

    function disown(string _name) onlyrecordowner(_name) {
        if (stringsEqual(m_toName[m_toRecord[_name].primary], _name))
        {
            PrimaryChanged(_name, m_toRecord[_name].primary);
            m_toName[m_toRecord[_name].primary] = "";
        }
        delete m_toRecord[_name];
        Changed(_name);
    }

    function setAddress(string _name, address _a, bool _primary) onlyrecordowner(_name) {
        m_toRecord[_name].primary = _a;
        if (_primary)
        {
            PrimaryChanged(_name, _a);
            m_toName[_a] = _name;
        }
        Changed(_name);
    }
    function setSubRegistrar(string _name, address _registrar) onlyrecordowner(_name) {
        m_toRecord[_name].subRegistrar = _registrar;
        Changed(_name);
    }
    function setContent(string _name, bytes32 _content) onlyrecordowner(_name) {
        m_toRecord[_name].content = _content;
        Changed(_name);
    }

    function stringsEqual(string storage _a, string memory _b) internal returns (bool) {
        bytes storage a = bytes(_a);
        bytes memory b = bytes(_b);
        if (a.length != b.length)
            return false;
        // @todo unroll this loop
        for (uint i = 0; i < a.length; i ++)
            if (a[i] != b[i])
                return false;
        return true;
    }

    function owner(string _name) constant returns (address) { return m_toRecord[_name].owner; }
    function addr(string _name) constant returns (address) { return m_toRecord[_name].primary; }
    function subRegistrar(string _name) constant returns (address) { return m_toRecord[_name].subRegistrar; }
    function content(string _name) constant returns (bytes32) { return m_toRecord[_name].content; }
    function name(address _addr) constant returns (string o_name) { return m_toName[_addr]; }

    mapping (address => string) m_toName;
    mapping (string => Record) m_toRecord;
}
)DELIMITER";

static unique_ptr<bytes> s_compiledRegistrar;

class AuctionRegistrarTestFramework: public ExecutionFramework
{
protected:
    void deployRegistrar()
    {
        if (!s_compiledRegistrar)
        {
            m_optimize = true;
            m_compiler.reset(false);
            m_compiler.addSource("", registrarCode);
            ETH_TEST_REQUIRE_NO_THROW(m_compiler.compile(m_optimize, m_optimizeRuns), "Compiling contract failed");
            s_compiledRegistrar.reset(new bytes(m_compiler.object("GlobalRegistrar").bytecode));
        }
        sendMessage(*s_compiledRegistrar, true);
        BOOST_REQUIRE(!m_output.empty());
    }

    using ContractInterface = ExecutionFramework::ContractInterface;
    class RegistrarInterface: public ContractInterface
    {
    public:
        RegistrarInterface(ExecutionFramework& _framework): ContractInterface(_framework) {}
        void reserve(string const& _name)
        {
            callString("reserve", _name);
        }
        u160 owner(string const& _name)
        {
            return callStringReturnsAddress("owner", _name);
        }
        void setAddress(string const& _name, u160 const& _address, bool _primary)
        {
            callStringAddressBool("setAddress", _name, _address, _primary);
        }
        u160 addr(string const& _name)
        {
            return callStringReturnsAddress("addr", _name);
        }
        string name(u160 const& _addr)
        {
            return callAddressReturnsString("name", _addr);
        }
        void setSubRegistrar(string const& _name, u160 const& _address)
        {
            callStringAddress("setSubRegistrar", _name, _address);
        }
        u160 subRegistrar(string const& _name)
        {
            return callStringReturnsAddress("subRegistrar", _name);
        }
        void setContent(string const& _name, h256 const& _content)
        {
            callStringBytes32("setContent", _name, _content);
        }
        h256 content(string const& _name)
        {
            return callStringReturnsBytes32("content", _name);
        }
        void transfer(string const& _name, u160 const& _target)
        {
            return callStringAddress("transfer", _name, _target);
        }
        void disown(string const& _name)
        {
            return callString("disown", _name);
        }
    };

    size_t const m_biddingTime = size_t(7 * 24 * 3600);
    size_t const m_renewalInterval = size_t(365 * 24 * 3600);
};

}

/// This is a test suite that tests optimised code!
BOOST_FIXTURE_TEST_SUITE(SolidityAuctionRegistrar, AuctionRegistrarTestFramework)

BOOST_AUTO_TEST_CASE(creation)
{
    deployRegistrar();
}

BOOST_AUTO_TEST_CASE(reserve)
{
    // Test that reserving works for long strings
    deployRegistrar();
    vector<string> names{"abcabcabcabcabc", "defdefdefdefdef", "ghighighighighighighighighighighighighighighi"};

    RegistrarInterface registrar(*this);

    // should not work
    registrar.reserve("");
    BOOST_CHECK_EQUAL(registrar.owner(""), u160(0));

    for (auto const& name: names)
    {
        registrar.reserve(name);
        BOOST_CHECK_EQUAL(registrar.owner(name), u160(m_sender));
    }
}

BOOST_AUTO_TEST_CASE(double_reserve_long)
{
    // Test that it is not possible to re-reserve from a different address.
    deployRegistrar();
    string name = "abcabcabcabcabcabcabcabcabcabca";
    RegistrarInterface registrar(*this);
    registrar.reserve(name);
    BOOST_CHECK_EQUAL(registrar.owner(name), m_sender);

    sendEther(account(1), u256(10) * ether);
    m_sender = account(1);
    registrar.reserve(name);
    BOOST_CHECK_EQUAL(registrar.owner(name), account(0));
}

BOOST_AUTO_TEST_CASE(properties)
{
    // Test setting and retrieving  the various properties works.
    deployRegistrar();
    RegistrarInterface registrar(*this);
    string names[] = {"abcaeouoeuaoeuaoeu", "defncboagufra,fui", "ghagpyajfbcuajouhaeoi"};
    size_t addr = 0x9872543;
    size_t count = 1;
    for (string const& name: names)
    {
        m_sender = account(0);
        sendEther(account(count), u256(20) * ether);
        m_sender = account(count);
        auto sender = m_sender;
        addr += count;
        // setting by sender works
        registrar.reserve(name);
        BOOST_CHECK_EQUAL(registrar.owner(name), sender);
        registrar.setAddress(name, addr, true);
        BOOST_CHECK_EQUAL(registrar.addr(name), u160(addr));
        registrar.setSubRegistrar(name, addr + 20);
        BOOST_CHECK_EQUAL(registrar.subRegistrar(name), u160(addr + 20));
        registrar.setContent(name, h256(u256(addr + 90)));
        BOOST_CHECK_EQUAL(registrar.content(name), h256(u256(addr + 90)));

        // but not by someone else
        m_sender = account(count - 1);
        BOOST_CHECK_EQUAL(registrar.owner(name), sender);
        registrar.setAddress(name, addr + 1, true);
        BOOST_CHECK_EQUAL(registrar.addr(name), u160(addr));
        registrar.setSubRegistrar(name, addr + 20 + 1);
        BOOST_CHECK_EQUAL(registrar.subRegistrar(name), u160(addr + 20));
        registrar.setContent(name, h256(u256(addr + 90 + 1)));
        BOOST_CHECK_EQUAL(registrar.content(name), h256(u256(addr + 90)));
        count++;
    }
}

BOOST_AUTO_TEST_CASE(transfer)
{
    deployRegistrar();
    string name = "abcaoeguaoucaeoduceo";
    RegistrarInterface registrar(*this);
    registrar.reserve(name);
    registrar.setContent(name, h256(u256(123)));
    registrar.transfer(name, u160(555));
    BOOST_CHECK_EQUAL(registrar.owner(name), u160(555));
    BOOST_CHECK_EQUAL(registrar.content(name), h256(u256(123)));
}

BOOST_AUTO_TEST_CASE(disown)
{
    deployRegistrar();
    string name = "abcaoeguaoucaeoduceo";

    RegistrarInterface registrar(*this);
    registrar.reserve(name);
    registrar.setContent(name, h256(u256(123)));
    registrar.setAddress(name, u160(124), true);
    registrar.setSubRegistrar(name, u160(125));
    BOOST_CHECK_EQUAL(registrar.name(u160(124)), name);

    // someone else tries disowning
    sendEther(account(1), u256(10) * ether);
    m_sender = account(1);
    registrar.disown(name);
    BOOST_CHECK_EQUAL(registrar.owner(name), account(0));

    m_sender = account(0);
    registrar.disown(name);
    BOOST_CHECK_EQUAL(registrar.owner(name), 0);
    BOOST_CHECK_EQUAL(registrar.addr(name), 0);
    BOOST_CHECK_EQUAL(registrar.subRegistrar(name), 0);
    BOOST_CHECK_EQUAL(registrar.content(name), h256());
    BOOST_CHECK_EQUAL(registrar.name(u160(124)), "");
}

BOOST_AUTO_TEST_CASE(auction_simple)
{
    deployRegistrar();
    string name = "x";

    RegistrarInterface registrar(*this);
    // initiate auction
    registrar.setNextValue(8);
    registrar.reserve(name);
    BOOST_CHECK_EQUAL(registrar.owner(name), 0);
    // "wait" until auction end
    m_rpc.test_modifyTimestamp(currentTimestamp() + m_biddingTime + 10);
    // trigger auction again
    registrar.reserve(name);
    BOOST_CHECK_EQUAL(registrar.owner(name), m_sender);
}

BOOST_AUTO_TEST_CASE(auction_bidding)
{
    deployRegistrar();
    string name = "x";

    unsigned startTime = 0x776347e2;
    m_rpc.test_modifyTimestamp(startTime);

    RegistrarInterface registrar(*this);
    // initiate auction
    registrar.setNextValue(8);
    registrar.reserve(name);
    BOOST_CHECK_EQUAL(registrar.owner(name), 0);
    // overbid self
    m_rpc.test_modifyTimestamp(startTime + m_biddingTime - 10);
    registrar.setNextValue(12);
    registrar.reserve(name);
    // another bid by someone else
    sendEther(account(1), 10 * ether);
    m_sender = account(1);
    m_rpc.test_modifyTimestamp(startTime + 2 * m_biddingTime - 50);
    registrar.setNextValue(13);
    registrar.reserve(name);
    BOOST_CHECK_EQUAL(registrar.owner(name), 0);
    // end auction by first bidder (which is not highest) trying to overbid again (too late)
    m_sender = account(0);
    m_rpc.test_modifyTimestamp(startTime + 4 * m_biddingTime);
    registrar.setNextValue(20);
    registrar.reserve(name);
    BOOST_CHECK_EQUAL(registrar.owner(name), account(1));
}

BOOST_AUTO_TEST_CASE(auction_renewal)
{
    deployRegistrar();

    string name = "x";
    RegistrarInterface registrar(*this);
    size_t startTime = currentTimestamp();
    // register name by auction
    registrar.setNextValue(8);
    registrar.reserve(name);
    m_rpc.test_modifyTimestamp(startTime + 4 * m_biddingTime);
    registrar.reserve(name);
    BOOST_CHECK_EQUAL(registrar.owner(name), m_sender);

    // try to re-register before interval end
    sendEther(account(1), 10 * ether);
    m_sender = account(1);
    m_rpc.test_modifyTimestamp(currentTimestamp() + m_renewalInterval - 1);
    registrar.setNextValue(80);
    registrar.reserve(name);
    m_rpc.test_modifyTimestamp(currentTimestamp() + m_biddingTime);
    // if there is a bug in the renewal logic, this would transfer the ownership to account(1),
    // but if there is no bug, this will initiate the auction, albeit with a zero bid
    registrar.reserve(name);
    BOOST_CHECK_EQUAL(registrar.owner(name), account(0));

    registrar.setNextValue(80);
    registrar.reserve(name);
    BOOST_CHECK_EQUAL(registrar.owner(name), account(1));
}

BOOST_AUTO_TEST_SUITE_END()

}
}
} // end namespaces