Originally post Oct 16 2016. Updated Oct 31 with audit report.
This is not investment advise as to whether vDice is a good investment or not. This is just a quick look at the smart contract behind vDice.
Sponsored story – Decentralised Gambling Game vDice Announces Crowdsale.
I don’t like sites promoting gambling, but here are some details:
- Oct 31 – Audit report by Peter Vessenes – source vDice Publishes Code Audit for ICO
- Crowdsale site
- ICO Whitepaper
- Business Plan
- Roadmap and the visual version
And the source code in github (which does not contain the crowdsale smart contracts yet) follows:
binary1.7.sol
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contract BetOver { address creator; BinaryOption market; function BetOver(address market_address) { creator = msg.sender; market = BinaryOption(market_address); } function kill() { if(msg.sender == creator) { suicide(creator); } } function claimLostCoins() { creator.send(this.balance); } function() { market.PublicBet.value(msg.value)(msg.sender, true); } } contract BetUnder { address creator; BinaryOption market; function BetUnder(address market_address) { creator = msg.sender; market = BinaryOption(market_address); } function kill() { if(msg.sender == creator) { suicide(creator); } } function claimLostCoins() { creator.send(this.balance); } function() { market.PublicBet.value(msg.value)(msg.sender,false); } } contract BinaryOption { address creator; address target; bool currentlyPayingOut = false; uint vig = 100 finney; uint public bet_deadline; uint public deadline; uint public underOver; uint funded; bool public paidOut = false; bool public contractKilled = false; mapping(address => uint) withdrawableBalances; mapping(address => uint) backupWithdraws; uint withholdForBackup; uint[14] sizes = [10 finney, 100 finney, 200 finney, 500 finney, 1 ether, 2 ether, 5 ether, 10 ether, 20 ether, 50 ether, 100 ether, 250 ether, 500 ether, 1000 ether]; struct Position { address bidder; uint amount; uint payout; } uint over_position = 0; uint under_position = 0; uint total_payout_under = 0; uint total_payout_over = 0; bool contract_terminated = false; string targetName = ""; Position[] overs; Position[] unders; address[] payoutRecipients; bool withdrawing = false; event LogBetOver(address indexed bet_from, uint bet_amount, uint calculated_payout); event LogBetUnder(address indexed bet_from, uint bet_amount, uint calculated_payout); event LogFailedSend(address indexed recip, uint amount, string overunder); event LogUnderFunded(uint amount_to_be_payed, uint balance, string comment); function addFunding() { funded += msg.value; } function withdrawFor(address forAddress) { if (withdrawing) throw; withdrawing = true; payout(); var amount = backupWithdraws[forAddress]; backupWithdraws[forAddress] = 0; withholdForBackup -= amount; if (!forAddress.call.value(amount)()) { LogFailedSend(forAddress, amount, "Withdrawal Failure"); backupWithdraws[forAddress] = amount; withholdForBackup += amount; } else { delete backupWithdraws[forAddress]; } withdrawing = false; } function withdrawAll() { if (withdrawing) throw; withdrawing = true; payout(); // if it's not time yet, this throws. That reverts withdrawing set. // Run the loop only as long as we have gas while (payoutRecipients.length > 0 && msg.gas > 10000) { address payout_address = payoutRecipients[payoutRecipients.length - 1]; uint payout_amount = withdrawableBalances[payout_address]; if(payout_amount > 0) { withdrawableBalances[payout_address] = 0; if(!payout_address.send(payout_amount)) { LogFailedSend(payout_address, payout_amount, "Withdrawal Failure, try withdrawFor!"); backupWithdraws[payout_address] += payout_amount; withholdForBackup += payout_amount; } } payoutRecipients.length--; } withdrawing = false; } function BinaryOption(address my_target, string target_name, uint under_over, uint betDays, uint endDays) { creator = msg.sender; overs.length += 1; overs[over_position].bidder = msg.sender; overs[over_position].amount = msg.value / 2; overs[over_position].payout = msg.value / 2; total_payout_over += msg.value / 2; over_position++; unders.length += 1; unders[under_position].bidder = msg.sender; unders[under_position].amount = msg.value / 2; unders[under_position].payout = msg.value / 2; under_position++; total_payout_under += msg.value / 2; bet_deadline = now + betDays * 1 days; deadline = now + endDays * 1 days; target = my_target; targetName = target_name; underOver = under_over * 1 ether; } function getTargetInfo() constant returns(address, string) { return(target, targetName); } function getMarketPosition() constant returns(uint,uint) { return (total_payout_over, total_payout_under); } function currentOverPrice(uint amount) constant returns (uint) { return (1 ether-vig)*amount/sentiment(amount, 0); } function getStatus() constant returns(uint, uint) { return (over_position,under_position); } function getBetUnder(uint id) constant returns(address, uint, uint) { if(id<under_position) { return (unders[id].bidder,unders[id].amount,unders[id].payout); } } function getBetOver(uint id) constant returns(address, uint, uint) { if(id<over_position) { return (overs[id].bidder,overs[id].amount,overs[id].payout); } } function currentUnderPrice(uint amount) constant returns (uint) { return (1 ether-vig)*amount/(1 ether-sentiment(0, amount)); } function getCurrentUnderAndOverPrice(uint amount) constant returns (uint, uint) { return (currentUnderPrice(amount), currentOverPrice(amount)); } function sentiment(uint moreover, uint moreunder) constant returns (uint) { uint testOver = total_payout_over + moreover; uint testUnder = total_payout_under + moreunder; if (testOver == 0 && testUnder == 0) { return (500 finney);} return (( (1 ether) * testOver ) / (testOver + testUnder)); } function betOver(address recipient) internal { var (maxOver, ) = getMaxBets(); uint betAmount = msg.value; if (msg.value > maxOver) { betAmount = maxOver; if (!recipient.send( msg.value - betAmount)) { LogFailedSend(recipient, msg.value - betAmount, "Couldn't refund. What? We'll Just Hold on To that, thanks."); } } var payout_amount = currentOverPrice(betAmount); overs.length += 1; overs[over_position].bidder = recipient; overs[over_position].amount = betAmount; overs[over_position].payout = payout_amount; over_position++; total_payout_over += payout_amount; //event: LogBetOver(recipient, betAmount, payout_amount); } function betUnder(address recipient) internal { var (, maxUnder) = getMaxBets(); uint betAmount = msg.value; if (msg.value > maxUnder ){ betAmount = maxUnder; if (!recipient.send( msg.value - betAmount)) { LogFailedSend(recipient, msg.value - betAmount, "Couldn't refund. What?"); } } var payout_amount = currentUnderPrice(betAmount); unders.length += 1; unders[under_position].bidder = recipient; unders[under_position].amount = betAmount; unders[under_position].payout = payout_amount; under_position++; total_payout_under += payout_amount; LogBetUnder(recipient, betAmount, payout_amount); } function payout() { if (now < deadline) { throw; } if (paidOut == true) { return ; } if(target.balance > underOver) { payoutOverWon(); } else { payoutUnderWon(); } } function payoutOverWon() internal { if (paidOut == true) { return; } for (uint i = 0; i < over_position; i++) { if (overs[i].payout > 0) { if (withdrawableBalances[overs[i].bidder] == 0) { // we haven't recorded this bettor yet payoutRecipients.push(overs[i].bidder); } withdrawableBalances[overs[i].bidder] += overs[i].payout; overs[i].payout = 0; } } paidOut = true; } function payoutUnderWon() internal { if (paidOut == true) { return; } for (uint i = 0; i < under_position; i++) { if (unders[i].payout > 0) { if (withdrawableBalances[unders[i].bidder] == 0) { // we haven't recorded this bettor yet payoutRecipients.push(unders[i].bidder); } withdrawableBalances[unders[i].bidder] += unders[i].payout; unders[i].payout = 0; } } paidOut = true; } function getMaxBets() constant returns (uint, uint) { uint maxOver; uint maxUnder; for (var i=0; i < sizes.length; i++) { if (currentOverPrice(sizes[i]) > sizes[i]) { maxOver = sizes[i]; } if (currentUnderPrice(sizes[i]) > sizes[i]) { maxUnder = sizes[i]; } } return(maxOver, maxUnder); } function targetBalance() constant returns (uint) { return target.balance; } function endItAll() { var stake_list = [2500, 3200, 4300]; var stake_addrs = [address(0xA1b5f95BE71fFa2f86aDEFcAa0028c46fE825161), address(0x536f9dCa5E5b89cCbD024C20429e7C8A0fDD5380), address(0x175C6e202a020b63313db8ca0cAAdbd97091FBf3)]; if (msg.sender == creator || msg.sender == stake_addrs[0] || msg.sender == stake_addrs[1] || msg.sender == stake_addrs[2]) { payout(); // make sure we pay out before earnings //withhold money needed for payouts. uint256 toWithhold = 0; toWithhold += withholdForBackup; for (uint256 i = 0; i < payoutRecipients.length; i++) { toWithhold += withdrawableBalances[payoutRecipients[i]]; } var availableFunds = this.balance - toWithhold; for (i = 0; i < stake_list.length; i++) { stake_addrs[i].send(availableFunds * stake_list[i] / 10000); } } } function PublicBet(address recipient, bool over) { if (recipient == 0) { recipient = msg.sender; } if (!ensureWeShouldProceedWithBet()) { throw; } if (over) { betOver(recipient); } else { betUnder(recipient); } } function ensureWeShouldProceedWithBet() returns(bool) { if (paidOut) { return false; } // no more bets if (now > bet_deadline) { return false; } if (msg.value < 10 finney ) { return false; } return true; } function() { if (!ensureWeShouldProceedWithBet()) { throw; } // okay contract is alive. It's not paid out. we're not after the deadline. We are not processing a $.10 bet. // Are we over or under? Choose highest paying option for bettor bool over = false; if (currentOverPrice(msg.value) > currentUnderPrice(msg.value)) { over = true; } else { over = false; } if (over) { PublicBet(msg.sender, true); } else { PublicBet(msg.sender, false); } } } |
contract_10.sol
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// <ORACLIZE_API> /* +# Copyright (c) 2015-2016 Oraclize SRL +# Copyright (c) 2016 Oraclize LTD Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ contract OraclizeI { address public cbAddress; function query(uint _timestamp, string _datasource, string _arg) returns (bytes32 _id); function query_withGasLimit(uint _timestamp, string _datasource, string _arg, uint _gaslimit) returns (bytes32 _id); function query2(uint _timestamp, string _datasource, string _arg1, string _arg2) returns (bytes32 _id); function query2_withGasLimit(uint _timestamp, string _datasource, string _arg1, string _arg2, uint _gaslimit) returns (bytes32 _id); function getPrice(string _datasource) returns (uint _dsprice); function getPrice(string _datasource, uint gaslimit) returns (uint _dsprice); function useCoupon(string _coupon); function setProofType(byte _proofType); function setCustomGasPrice(uint _gasPrice); } contract OraclizeAddrResolverI { function getAddress() returns (address _addr); } contract usingOraclize { uint constant day = 60*60*24; uint constant week = 60*60*24*7; uint constant month = 60*60*24*30; byte constant proofType_NONE = 0x00; byte constant proofType_TLSNotary = 0x10; byte constant proofStorage_IPFS = 0x01; uint8 constant networkID_auto = 0; uint8 constant networkID_mainnet = 1; uint8 constant networkID_testnet = 2; uint8 constant networkID_morden = 2; uint8 constant networkID_consensys = 161; OraclizeAddrResolverI OAR; OraclizeI oraclize; modifier oraclizeAPI { address oraclizeAddr = OAR.getAddress(); if (oraclizeAddr == 0){ oraclize_setNetwork(networkID_auto); oraclizeAddr = OAR.getAddress(); } oraclize = OraclizeI(oraclizeAddr); _ } modifier coupon(string code){ oraclize = OraclizeI(OAR.getAddress()); oraclize.useCoupon(code); _ } function oraclize_setNetwork(uint8 networkID) internal returns(bool){ if (getCodeSize(0x1d3b2638a7cc9f2cb3d298a3da7a90b67e5506ed)>0){ OAR = OraclizeAddrResolverI(0x1d3b2638a7cc9f2cb3d298a3da7a90b67e5506ed); return true; } if (getCodeSize(0x9efbea6358bed926b293d2ce63a730d6d98d43dd)>0){ OAR = OraclizeAddrResolverI(0x9efbea6358bed926b293d2ce63a730d6d98d43dd); return true; } if (getCodeSize(0x20e12a1f859b3feae5fb2a0a32c18f5a65555bbf)>0){ OAR = OraclizeAddrResolverI(0x20e12a1f859b3feae5fb2a0a32c18f5a65555bbf); return true; } return false; } function oraclize_query(string datasource, string arg) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price return oraclize.query.value(price)(0, datasource, arg); } function oraclize_query(uint timestamp, string datasource, string arg) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price return oraclize.query.value(price)(timestamp, datasource, arg); } function oraclize_query(uint timestamp, string datasource, string arg, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price return oraclize.query_withGasLimit.value(price)(timestamp, datasource, arg, gaslimit); } function oraclize_query(string datasource, string arg, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price return oraclize.query_withGasLimit.value(price)(0, datasource, arg, gaslimit); } function oraclize_query(string datasource, string arg1, string arg2) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price return oraclize.query2.value(price)(0, datasource, arg1, arg2); } function oraclize_query(uint timestamp, string datasource, string arg1, string arg2) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price return oraclize.query2.value(price)(timestamp, datasource, arg1, arg2); } function oraclize_query(uint timestamp, string datasource, string arg1, string arg2, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price return oraclize.query2_withGasLimit.value(price)(timestamp, datasource, arg1, arg2, gaslimit); } function oraclize_query(string datasource, string arg1, string arg2, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price return oraclize.query2_withGasLimit.value(price)(0, datasource, arg1, arg2, gaslimit); } function oraclize_cbAddress() oraclizeAPI internal returns (address){ return oraclize.cbAddress(); } function oraclize_setProof(byte proofP) oraclizeAPI internal { return oraclize.setProofType(proofP); } function oraclize_setCustomGasPrice(uint gasPrice) oraclizeAPI internal { return oraclize.setCustomGasPrice(gasPrice); } function getCodeSize(address _addr) constant internal returns(uint _size) { assembly { _size := extcodesize(_addr) } } function parseAddr(string _a) internal returns (address){ bytes memory tmp = bytes(_a); uint160 iaddr = 0; uint160 b1; uint160 b2; for (uint i=2; i<2+2*20; i+=2){ iaddr *= 256; b1 = uint160(tmp[i]); b2 = uint160(tmp[i+1]); if ((b1 >= 97)&&(b1 <= 102)) b1 -= 87; else if ((b1 >= 48)&&(b1 <= 57)) b1 -= 48; if ((b2 >= 97)&&(b2 <= 102)) b2 -= 87; else if ((b2 >= 48)&&(b2 <= 57)) b2 -= 48; iaddr += (b1*16+b2); } return address(iaddr); } function strCompare(string _a, string _b) internal returns (int) { bytes memory a = bytes(_a); bytes memory b = bytes(_b); uint minLength = a.length; if (b.length < minLength) minLength = b.length; for (uint i = 0; i < minLength; i ++) if (a[i] < b[i]) return -1; else if (a[i] > b[i]) return 1; if (a.length < b.length) return -1; else if (a.length > b.length) return 1; else return 0; } function indexOf(string _haystack, string _needle) internal returns (int) { bytes memory h = bytes(_haystack); bytes memory n = bytes(_needle); if(h.length < 1 || n.length < 1 || (n.length > h.length)) return -1; else if(h.length > (2**128 -1)) return -1; else { uint subindex = 0; for (uint i = 0; i < h.length; i ++) { if (h[i] == n[0]) { subindex = 1; while(subindex < n.length && (i + subindex) < h.length && h[i + subindex] == n[subindex]) { subindex++; } if(subindex == n.length) return int(i); } } return -1; } } function strConcat(string _a, string _b, string _c, string _d, string _e) internal returns (string){ bytes memory _ba = bytes(_a); bytes memory _bb = bytes(_b); bytes memory _bc = bytes(_c); bytes memory _bd = bytes(_d); bytes memory _be = bytes(_e); string memory abcde = new string(_ba.length + _bb.length + _bc.length + _bd.length + _be.length); bytes memory babcde = bytes(abcde); uint k = 0; for (uint i = 0; i < _ba.length; i++) babcde[k++] = _ba[i]; for (i = 0; i < _bb.length; i++) babcde[k++] = _bb[i]; for (i = 0; i < _bc.length; i++) babcde[k++] = _bc[i]; for (i = 0; i < _bd.length; i++) babcde[k++] = _bd[i]; for (i = 0; i < _be.length; i++) babcde[k++] = _be[i]; return string(babcde); } function strConcat(string _a, string _b, string _c, string _d) internal returns (string) { return strConcat(_a, _b, _c, _d, ""); } function strConcat(string _a, string _b, string _c) internal returns (string) { return strConcat(_a, _b, _c, "", ""); } function strConcat(string _a, string _b) internal returns (string) { return strConcat(_a, _b, "", "", ""); } // parseInt function parseInt(string _a) internal returns (uint) { return parseInt(_a, 0); } // parseInt(parseFloat*10^_b) function parseInt(string _a, uint _b) internal returns (uint) { bytes memory bresult = bytes(_a); uint mint = 0; bool decimals = false; for (uint i=0; i<bresult.length; i++){ if ((bresult[i] >= 48)&&(bresult[i] <= 57)){ if (decimals){ if (_b == 0) break; else _b--; } mint *= 10; mint += uint(bresult[i]) - 48; } else if (bresult[i] == 46) decimals = true; } if (_b > 0) mint *= 10**_b; return mint; } } // </ORACLIZE_API> contract Dice is usingOraclize { uint public pwin = 5000; //probability of winning (10000 = 100%) uint public edge = 200; //edge percentage (10000 = 100%) uint public maxWin = 100; //max win (before edge is taken) as percentage of bankroll (10000 = 100%) uint public minBet = 1 finney; uint public maxInvestors = 5; //maximum number of investors uint public houseEdge = 50; //edge percentage (10000 = 100%) uint public divestFee = 50; //divest fee percentage (10000 = 100%) uint public emergencyWithdrawalRatio = 90; //ratio percentage (100 = 100%) uint safeGas = 25000; uint constant ORACLIZE_GAS_LIMIT = 125000; uint constant INVALID_BET_MARKER = 99999; uint constant EMERGENCY_TIMEOUT = 7 days; struct Investor { address investorAddress; uint amountInvested; bool votedForEmergencyWithdrawal; } struct Bet { address playerAddress; uint amountBetted; uint numberRolled; } struct WithdrawalProposal { address toAddress; uint atTime; } //Starting at 1 mapping(address => uint) public investorIDs; mapping(uint => Investor) public investors; uint public numInvestors = 0; uint public invested = 0; address owner; address houseAddress; bool public isStopped; WithdrawalProposal public proposedWithdrawal; mapping (bytes32 => Bet) bets; bytes32[] betsKeys; uint public amountWagered = 0; uint public investorsProfit = 0; uint public investorsLoses = 0; bool profitDistributed; event BetWon(address playerAddress, uint numberRolled, uint amountWon); event BetLost(address playerAddress, uint numberRolled); event EmergencyWithdrawalProposed(); event EmergencyWithdrawalFailed(address withdrawalAddress); event EmergencyWithdrawalSucceeded(address withdrawalAddress, uint amountWithdrawn); event FailedSend(address receiver, uint amount); event ValueIsTooBig(); function Dice(uint pwinInitial, uint edgeInitial, uint maxWinInitial, uint minBetInitial, uint maxInvestorsInitial, uint houseEdgeInitial, uint divestFeeInitial, uint emergencyWithdrawalRatioInitial ) { oraclize_setProof(proofType_TLSNotary | proofStorage_IPFS); pwin = pwinInitial; edge = edgeInitial; maxWin = maxWinInitial; minBet = minBetInitial; maxInvestors = maxInvestorsInitial; houseEdge = houseEdgeInitial; divestFee = divestFeeInitial; emergencyWithdrawalRatio = emergencyWithdrawalRatioInitial; owner = msg.sender; houseAddress = msg.sender; } //SECTION I: MODIFIERS AND HELPER FUNCTIONS //MODIFIERS modifier onlyIfNotStopped { if (isStopped) throw; _ } modifier onlyIfStopped { if (!isStopped) throw; _ } modifier onlyInvestors { if (investorIDs[msg.sender] == 0) throw; _ } modifier onlyNotInvestors { if (investorIDs[msg.sender] != 0) throw; _ } modifier onlyOwner { if (owner != msg.sender) throw; _ } modifier onlyOraclize { if (msg.sender != oraclize_cbAddress()) throw; _ } modifier onlyMoreThanMinInvestment { if (msg.value <= getMinInvestment()) throw; _ } modifier onlyMoreThanZero { if (msg.value == 0) throw; _ } modifier onlyIfBetSizeIsStillCorrect(bytes32 myid) { Bet thisBet = bets[myid]; if ((((thisBet.amountBetted * ((10000 - edge) - pwin)) / pwin ) <= (maxWin * getBankroll()) / 10000)) { _ } else { bets[myid].numberRolled = INVALID_BET_MARKER; safeSend(thisBet.playerAddress, thisBet.amountBetted); return; } } modifier onlyIfValidRoll(bytes32 myid, string result) { Bet thisBet = bets[myid]; uint numberRolled = parseInt(result); if ((numberRolled < 1 || numberRolled > 10000) && thisBet.numberRolled == 0) { bets[myid].numberRolled = INVALID_BET_MARKER; safeSend(thisBet.playerAddress, thisBet.amountBetted); return; } _ } modifier onlyIfInvestorBalanceIsPositive(address currentInvestor) { if (getBalance(currentInvestor) >= 0) { _ } } modifier onlyWinningBets(uint numberRolled) { if (numberRolled - 1 < pwin) { _ } } modifier onlyLosingBets(uint numberRolled) { if (numberRolled - 1 >= pwin) { _ } } modifier onlyAfterProposed { if (proposedWithdrawal.toAddress == 0) throw; _ } modifier rejectValue { if (msg.value != 0) throw; _ } modifier onlyIfProfitNotDistributed { if (!profitDistributed) { _ } } modifier onlyIfValidGas(uint newGasLimit) { if (newGasLimit < 25000) throw; _ } modifier onlyIfNotProcessed(bytes32 myid) { Bet thisBet = bets[myid]; if (thisBet.numberRolled > 0) throw; _ } modifier onlyIfEmergencyTimeOutHasPassed { if (proposedWithdrawal.atTime + EMERGENCY_TIMEOUT > now) throw; _ } //CONSTANT HELPER FUNCTIONS function getBankroll() constant returns(uint) { return invested + investorsProfit - investorsLoses; } function getMinInvestment() constant returns(uint) { if (numInvestors == maxInvestors) { uint investorID = searchSmallestInvestor(); return getBalance(investors[investorID].investorAddress); } else { return 0; } } function getStatus() constant returns(uint, uint, uint, uint, uint, uint, uint, uint, uint) { uint bankroll = getBankroll(); uint minInvestment = getMinInvestment(); return (bankroll, pwin, edge, maxWin, minBet, amountWagered, (investorsProfit - investorsLoses), minInvestment, betsKeys.length); } function getBet(uint id) constant returns(address, uint, uint) { if (id < betsKeys.length) { bytes32 betKey = betsKeys[id]; return (bets[betKey].playerAddress, bets[betKey].amountBetted, bets[betKey].numberRolled); } } function numBets() constant returns(uint) { return betsKeys.length; } function getMinBetAmount() constant returns(uint) { uint oraclizeFee = OraclizeI(OAR.getAddress()).getPrice("URL", ORACLIZE_GAS_LIMIT + safeGas); return oraclizeFee + minBet; } function getMaxBetAmount() constant returns(uint) { uint oraclizeFee = OraclizeI(OAR.getAddress()).getPrice("URL", ORACLIZE_GAS_LIMIT + safeGas); uint betValue = (maxWin * getBankroll()) * pwin / (10000 * (10000 - edge - pwin)); return betValue + oraclizeFee; } function getLosesShare(address currentInvestor) constant returns (uint) { return investors[investorIDs[currentInvestor]].amountInvested * (investorsLoses) / invested; } function getProfitShare(address currentInvestor) constant returns (uint) { return investors[investorIDs[currentInvestor]].amountInvested * (investorsProfit) / invested; } function getBalance(address currentInvestor) constant returns (uint) { return investors[investorIDs[currentInvestor]].amountInvested + getProfitShare(currentInvestor) - getLosesShare(currentInvestor); } function searchSmallestInvestor() constant returns(uint) { uint investorID = 1; for (uint i = 1; i <= numInvestors; i++) { if (getBalance(investors[i].investorAddress) < getBalance(investors[investorID].investorAddress)) { investorID = i; } } return investorID; } // PRIVATE HELPERS FUNCTION function safeSend(address addr, uint value) private { if (this.balance < value) { ValueIsTooBig(); return; } if (!(addr.call.gas(safeGas).value(value)())) { FailedSend(addr, value); if (addr != houseAddress) { //Forward to house address all change if (!(houseAddress.call.gas(safeGas).value(value)())) FailedSend(houseAddress, value); } } } function addInvestorAtID(uint id) private { investorIDs[msg.sender] = id; investors[id].investorAddress = msg.sender; investors[id].amountInvested = msg.value; invested += msg.value; } function profitDistribution() private onlyIfProfitNotDistributed { uint copyInvested; for (uint i = 1; i <= numInvestors; i++) { address currentInvestor = investors[i].investorAddress; uint profitOfInvestor = getProfitShare(currentInvestor); uint losesOfInvestor = getLosesShare(currentInvestor); investors[i].amountInvested += profitOfInvestor - losesOfInvestor; copyInvested += investors[i].amountInvested; } delete investorsProfit; delete investorsLoses; invested = copyInvested; profitDistributed = true; } // SECTION II: BET & BET PROCESSING function() { bet(); } function bet() onlyIfNotStopped onlyMoreThanZero { uint oraclizeFee = OraclizeI(OAR.getAddress()).getPrice("URL", ORACLIZE_GAS_LIMIT + safeGas); uint betValue = msg.value - oraclizeFee; if ((((betValue * ((10000 - edge) - pwin)) / pwin ) <= (maxWin * getBankroll()) / 10000) && (betValue >= minBet)) { // encrypted arg: '\n{"jsonrpc":2.0,"method":"generateSignedIntegers","params":{"apiKey":"YOUR_API_KEY","n":1,"min":1,"max":10000},"id":1}' bytes32 myid = oraclize_query("URL", "json(https://api.random.org/json-rpc/1/invoke).result.random.data.0","BBX1PCQ9134839wTz10OWxXCaZaGk92yF6TES8xA+8IC7xNBlJq5AL0uW3rev7IoApA5DMFmCfKGikjnNbNglKKvwjENYPB8TBJN9tDgdcYNxdWnsYARKMqmjrJKYbBAiws+UU6HrJXUWirO+dBSSJbmjIg+9vmBjSq8KveiBzSGmuQhu7/hSg5rSsSP/r+MhR/Q5ECrOHi+CkP/qdSUTA/QhCCjdzFu+7t3Hs7NU34a+l7JdvDlvD8hoNxyKooMDYNbUA8/eFmPv2d538FN6KJQp+RKr4w4VtAMHdejrLM=", ORACLIZE_GAS_LIMIT + safeGas); bets[myid] = Bet(msg.sender, betValue, 0); betsKeys.push(myid); } else { throw; } } function __callback (bytes32 myid, string result, bytes proof) onlyOraclize onlyIfNotProcessed(myid) onlyIfValidRoll(myid, result) onlyIfBetSizeIsStillCorrect(myid) { Bet thisBet = bets[myid]; uint numberRolled = parseInt(result); bets[myid].numberRolled = numberRolled; isWinningBet(thisBet, numberRolled); isLosingBet(thisBet, numberRolled); amountWagered += thisBet.amountBetted; delete profitDistributed; } function isWinningBet(Bet thisBet, uint numberRolled) private onlyWinningBets(numberRolled) { uint winAmount = (thisBet.amountBetted * (10000 - edge)) / pwin; BetWon(thisBet.playerAddress, numberRolled, winAmount); safeSend(thisBet.playerAddress, winAmount); investorsLoses += (winAmount - thisBet.amountBetted); } function isLosingBet(Bet thisBet, uint numberRolled) private onlyLosingBets(numberRolled) { BetLost(thisBet.playerAddress, numberRolled); safeSend(thisBet.playerAddress, 1); investorsProfit += (thisBet.amountBetted - 1)*(10000 - houseEdge)/10000; uint houseProfit = (thisBet.amountBetted - 1)*(houseEdge)/10000; safeSend(houseAddress, houseProfit); } //SECTION III: INVEST & DIVEST function increaseInvestment() onlyIfNotStopped onlyMoreThanZero onlyInvestors { profitDistribution(); investors[investorIDs[msg.sender]].amountInvested += msg.value; invested += msg.value; } function newInvestor() onlyIfNotStopped onlyMoreThanZero onlyNotInvestors onlyMoreThanMinInvestment { profitDistribution(); if (numInvestors == maxInvestors) { uint smallestInvestorID = searchSmallestInvestor(); divest(investors[smallestInvestorID].investorAddress); } numInvestors++; addInvestorAtID(numInvestors); } function divest() onlyInvestors rejectValue { divest(msg.sender); } function divest(address currentInvestor) private onlyIfInvestorBalanceIsPositive(currentInvestor) { profitDistribution(); uint currentID = investorIDs[currentInvestor]; uint amountToReturn = getBalance(currentInvestor); invested -= investors[currentID].amountInvested; uint divestFeeAmount = (amountToReturn*divestFee)/10000; amountToReturn -= divestFeeAmount; delete investors[currentID]; delete investorIDs[currentInvestor]; //Reorder investors if (currentID != numInvestors) { // Get last investor Investor lastInvestor = investors[numInvestors]; //Set last investor ID to investorID of divesting account investorIDs[lastInvestor.investorAddress] = currentID; //Copy investor at the new position in the mapping investors[currentID] = lastInvestor; //Delete old position in the mappping delete investors[numInvestors]; } numInvestors--; safeSend(currentInvestor, amountToReturn); safeSend(houseAddress, divestFeeAmount); } function forceDivestOfAllInvestors() onlyOwner rejectValue { uint copyNumInvestors = numInvestors; for (uint i = 1; i <= copyNumInvestors; i++) { divest(investors[1].investorAddress); } } /* The owner can use this function to force the exit of an investor from the contract during an emergency withdrawal in the following situations: - Unresponsive investor - Investor demanding to be paid in other to vote, the facto-blackmailing other investors */ function forceDivestOfOneInvestor(address currentInvestor) onlyOwner onlyIfStopped rejectValue { divest(currentInvestor); //Resets emergency withdrawal proposal. Investors must vote again delete proposedWithdrawal; } //SECTION IV: CONTRACT MANAGEMENT function stopContract() onlyOwner rejectValue { isStopped = true; } function resumeContract() onlyOwner rejectValue { isStopped = false; } function changeHouseAddress(address newHouse) onlyOwner rejectValue { houseAddress = newHouse; } function changeOwnerAddress(address newOwner) onlyOwner rejectValue { owner = newOwner; } function changeGasLimitOfSafeSend(uint newGasLimit) onlyOwner onlyIfValidGas(newGasLimit) rejectValue { safeGas = newGasLimit; } //SECTION V: EMERGENCY WITHDRAWAL function voteEmergencyWithdrawal(bool vote) onlyInvestors onlyAfterProposed onlyIfStopped rejectValue { investors[investorIDs[msg.sender]].votedForEmergencyWithdrawal = vote; } function proposeEmergencyWithdrawal(address withdrawalAddress) onlyIfStopped onlyOwner rejectValue { //Resets previous votes for (uint i = 1; i <= numInvestors; i++) { delete investors[i].votedForEmergencyWithdrawal; } proposedWithdrawal = WithdrawalProposal(withdrawalAddress, now); EmergencyWithdrawalProposed(); } function executeEmergencyWithdrawal() onlyOwner onlyAfterProposed onlyIfStopped onlyIfEmergencyTimeOutHasPassed rejectValue { uint numOfVotesInFavour; uint amountToWithdrawal = this.balance; for (uint i = 1; i <= numInvestors; i++) { if (investors[i].votedForEmergencyWithdrawal == true) { numOfVotesInFavour++; delete investors[i].votedForEmergencyWithdrawal; } } if (numOfVotesInFavour >= emergencyWithdrawalRatio * numInvestors / 100) { if (!proposedWithdrawal.toAddress.send(this.balance)) { EmergencyWithdrawalFailed(proposedWithdrawal.toAddress); } else { EmergencyWithdrawalSucceeded(proposedWithdrawal.toAddress, amountToWithdrawal); } } else { throw; } } } |