From 2721252d6a82e83801c650ebad6a2cb4d7195bc1 Mon Sep 17 00:00:00 2001 From: Fabio Berger Date: Fri, 19 Jan 2018 23:13:31 +0800 Subject: Get rid of suffixed contract versioning and replace it with a poor-mans package manager. Versions are stored locally, and are generated in a copy-on-write basis as required --- .../contracts/contracts/DummyToken/DummyToken.sol | 37 + .../contracts/contracts/ERC20Token/ERC20Token.sol | 58 ++ packages/contracts/contracts/Exchange.sol | 602 ---------------- packages/contracts/contracts/Exchange/Exchange.sol | 602 ++++++++++++++++ .../contracts/MaliciousToken/MaliciousToken.sol | 31 + packages/contracts/contracts/Mintable/Mintable.sol | 18 + .../contracts/MultiSigWallet/MultiSigWallet.sol | 366 ++++++++++ .../MultiSigWalletWithTimeLock.sol | 132 ++++ ...etWithTimeLockExceptRemoveAuthorizedAddress.sol | 82 +++ packages/contracts/contracts/Ownable/Ownable.sol | 32 + packages/contracts/contracts/SafeMath/SafeMath.sol | 73 ++ .../contracts/StandardToken/StandardToken.sol | 44 ++ packages/contracts/contracts/Token/Token.sol | 35 + packages/contracts/contracts/TokenRegistry.sol | 309 --------- .../contracts/TokenRegistry/TokenRegistry.sol | 308 +++++++++ .../contracts/contracts/TokenTransferProxy.sol | 116 ---- .../TokenTransferProxy/TokenTransferProxy.sol | 115 ++++ .../UnlimitedAllowanceToken.sol | 46 ++ packages/contracts/contracts/WETH9/WETH9.sol | 756 +++++++++++++++++++++ packages/contracts/contracts/ZRXToken/ZRXToken.sol | 33 + .../contracts/multisig/MultiSigWallet.sol | 366 ---------- .../multisig/MultiSigWalletWithTimeLock.sol | 133 ---- ...etWithTimeLockExceptRemoveAuthorizedAddress.sol | 83 --- packages/contracts/contracts/test/DummyToken.sol | 36 - .../contracts/contracts/test/DummyToken_v2.sol | 38 -- .../contracts/contracts/test/MaliciousToken.sol | 32 - packages/contracts/contracts/test/Mintable.sol | 19 - packages/contracts/contracts/test/Mintable_v2.sol | 19 - packages/contracts/contracts/tokens/ERC20Token.sol | 59 -- .../contracts/contracts/tokens/StandardToken.sol | 45 -- packages/contracts/contracts/tokens/Token.sol | 39 -- packages/contracts/contracts/tokens/Token_v2.sol | 36 - .../contracts/tokens/UnlimitedAllowanceToken.sol | 53 -- .../tokens/UnlimitedAllowanceToken_v2.sol | 47 -- packages/contracts/contracts/tokens/WETH9.sol | 756 --------------------- packages/contracts/contracts/tokens/ZRXToken.sol | 34 - packages/contracts/contracts/utils/Ownable.sol | 28 - packages/contracts/contracts/utils/Ownable_v2.sol | 33 - packages/contracts/contracts/utils/SafeMath.sol | 74 -- packages/contracts/contracts/utils/SafeMath_v2.sol | 74 -- packages/contracts/contracts_old/Ownable/v1.sol | 27 + packages/contracts/contracts_old/SafeMath/v1.sol | 73 ++ packages/contracts/contracts_old/Token/v1.sol | 39 ++ .../contracts_old/UnlimitedAllowanceToken/v1.sol | 52 ++ .../contracts/test/unlimited_allowance_token.ts | 26 +- .../contracts/test/unlimited_allowance_token_v2.ts | 152 ----- 46 files changed, 2979 insertions(+), 3189 deletions(-) create mode 100644 packages/contracts/contracts/DummyToken/DummyToken.sol create mode 100644 packages/contracts/contracts/ERC20Token/ERC20Token.sol delete mode 100644 packages/contracts/contracts/Exchange.sol create mode 100644 packages/contracts/contracts/Exchange/Exchange.sol create mode 100644 packages/contracts/contracts/MaliciousToken/MaliciousToken.sol create mode 100644 packages/contracts/contracts/Mintable/Mintable.sol create mode 100644 packages/contracts/contracts/MultiSigWallet/MultiSigWallet.sol create mode 100644 packages/contracts/contracts/MultiSigWalletWithTimeLock/MultiSigWalletWithTimeLock.sol create mode 100644 packages/contracts/contracts/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.sol create mode 100644 packages/contracts/contracts/Ownable/Ownable.sol create mode 100644 packages/contracts/contracts/SafeMath/SafeMath.sol create mode 100644 packages/contracts/contracts/StandardToken/StandardToken.sol create mode 100644 packages/contracts/contracts/Token/Token.sol delete mode 100644 packages/contracts/contracts/TokenRegistry.sol create mode 100644 packages/contracts/contracts/TokenRegistry/TokenRegistry.sol delete mode 100644 packages/contracts/contracts/TokenTransferProxy.sol create mode 100644 packages/contracts/contracts/TokenTransferProxy/TokenTransferProxy.sol create mode 100644 packages/contracts/contracts/UnlimitedAllowanceToken/UnlimitedAllowanceToken.sol create mode 100644 packages/contracts/contracts/WETH9/WETH9.sol create mode 100644 packages/contracts/contracts/ZRXToken/ZRXToken.sol delete mode 100644 packages/contracts/contracts/multisig/MultiSigWallet.sol delete mode 100644 packages/contracts/contracts/multisig/MultiSigWalletWithTimeLock.sol delete mode 100644 packages/contracts/contracts/multisig/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.sol delete mode 100644 packages/contracts/contracts/test/DummyToken.sol delete mode 100644 packages/contracts/contracts/test/DummyToken_v2.sol delete mode 100644 packages/contracts/contracts/test/MaliciousToken.sol delete mode 100644 packages/contracts/contracts/test/Mintable.sol delete mode 100644 packages/contracts/contracts/test/Mintable_v2.sol delete mode 100644 packages/contracts/contracts/tokens/ERC20Token.sol delete mode 100644 packages/contracts/contracts/tokens/StandardToken.sol delete mode 100644 packages/contracts/contracts/tokens/Token.sol delete mode 100644 packages/contracts/contracts/tokens/Token_v2.sol delete mode 100644 packages/contracts/contracts/tokens/UnlimitedAllowanceToken.sol delete mode 100644 packages/contracts/contracts/tokens/UnlimitedAllowanceToken_v2.sol delete mode 100644 packages/contracts/contracts/tokens/WETH9.sol delete mode 100644 packages/contracts/contracts/tokens/ZRXToken.sol delete mode 100644 packages/contracts/contracts/utils/Ownable.sol delete mode 100644 packages/contracts/contracts/utils/Ownable_v2.sol delete mode 100644 packages/contracts/contracts/utils/SafeMath.sol delete mode 100644 packages/contracts/contracts/utils/SafeMath_v2.sol create mode 100644 packages/contracts/contracts_old/Ownable/v1.sol create mode 100644 packages/contracts/contracts_old/SafeMath/v1.sol create mode 100644 packages/contracts/contracts_old/Token/v1.sol create mode 100644 packages/contracts/contracts_old/UnlimitedAllowanceToken/v1.sol delete mode 100644 packages/contracts/test/unlimited_allowance_token_v2.ts (limited to 'packages') diff --git a/packages/contracts/contracts/DummyToken/DummyToken.sol b/packages/contracts/contracts/DummyToken/DummyToken.sol new file mode 100644 index 000000000..7a7ac8e48 --- /dev/null +++ b/packages/contracts/contracts/DummyToken/DummyToken.sol @@ -0,0 +1,37 @@ +pragma solidity 0.4.18; + +import "../Mintable/Mintable.sol"; +import "../../contracts_old/Ownable/v1.sol"; + +contract DummyToken is Mintable, Ownable { + string public name; + string public symbol; + uint public decimals; + + function DummyToken( + string _name, + string _symbol, + uint _decimals, + uint _totalSupply) + public + { + name = _name; + symbol = _symbol; + decimals = _decimals; + totalSupply = _totalSupply; + balances[msg.sender] = _totalSupply; + } + + function setBalance(address _target, uint _value) + public + onlyOwner + { + uint currBalance = balanceOf(_target); + if (_value < currBalance) { + totalSupply = safeSub(totalSupply, safeSub(currBalance, _value)); + } else { + totalSupply = safeAdd(totalSupply, safeSub(_value, currBalance)); + } + balances[_target] = _value; + } +} diff --git a/packages/contracts/contracts/ERC20Token/ERC20Token.sol b/packages/contracts/contracts/ERC20Token/ERC20Token.sol new file mode 100644 index 000000000..976b5564e --- /dev/null +++ b/packages/contracts/contracts/ERC20Token/ERC20Token.sol @@ -0,0 +1,58 @@ +pragma solidity 0.4.18; + +import "../Token/Token.sol"; + +contract ERC20Token is Token { + + function transfer(address _to, uint _value) + public + returns (bool) + { + require(balances[msg.sender] >= _value && balances[_to] + _value >= balances[_to]); + balances[msg.sender] -= _value; + balances[_to] += _value; + Transfer(msg.sender, _to, _value); + return true; + } + + function transferFrom(address _from, address _to, uint _value) + public + returns (bool) + { + require(balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value >= balances[_to]); + balances[_to] += _value; + balances[_from] -= _value; + allowed[_from][msg.sender] -= _value; + Transfer(_from, _to, _value); + return true; + } + + function approve(address _spender, uint _value) + public + returns (bool) + { + allowed[msg.sender][_spender] = _value; + Approval(msg.sender, _spender, _value); + return true; + } + + function balanceOf(address _owner) + public + view + returns (uint) + { + return balances[_owner]; + } + + function allowance(address _owner, address _spender) + public + view + returns (uint) + { + return allowed[_owner][_spender]; + } + + mapping (address => uint) balances; + mapping (address => mapping (address => uint)) allowed; + uint public totalSupply; +} diff --git a/packages/contracts/contracts/Exchange.sol b/packages/contracts/contracts/Exchange.sol deleted file mode 100644 index 1da74deef..000000000 --- a/packages/contracts/contracts/Exchange.sol +++ /dev/null @@ -1,602 +0,0 @@ -/* - - Copyright 2017 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity ^0.4.11; - -import "./TokenTransferProxy.sol"; -import "./tokens/Token.sol"; -import "./utils/SafeMath.sol"; - -/// @title Exchange - Facilitates exchange of ERC20 tokens. -/// @author Amir Bandeali - , Will Warren - -contract Exchange is SafeMath { - - // Error Codes - enum Errors { - ORDER_EXPIRED, // Order has already expired - ORDER_FULLY_FILLED_OR_CANCELLED, // Order has already been fully filled or cancelled - ROUNDING_ERROR_TOO_LARGE, // Rounding error too large - INSUFFICIENT_BALANCE_OR_ALLOWANCE // Insufficient balance or allowance for token transfer - } - - string constant public VERSION = "1.0.0"; - uint16 constant public EXTERNAL_QUERY_GAS_LIMIT = 4999; // Changes to state require at least 5000 gas - - address public ZRX_TOKEN_CONTRACT; - address public TOKEN_TRANSFER_PROXY_CONTRACT; - - // Mappings of orderHash => amounts of takerTokenAmount filled or cancelled. - mapping (bytes32 => uint) public filled; - mapping (bytes32 => uint) public cancelled; - - event LogFill( - address indexed maker, - address taker, - address indexed feeRecipient, - address makerToken, - address takerToken, - uint filledMakerTokenAmount, - uint filledTakerTokenAmount, - uint paidMakerFee, - uint paidTakerFee, - bytes32 indexed tokens, // keccak256(makerToken, takerToken), allows subscribing to a token pair - bytes32 orderHash - ); - - event LogCancel( - address indexed maker, - address indexed feeRecipient, - address makerToken, - address takerToken, - uint cancelledMakerTokenAmount, - uint cancelledTakerTokenAmount, - bytes32 indexed tokens, - bytes32 orderHash - ); - - event LogError(uint8 indexed errorId, bytes32 indexed orderHash); - - struct Order { - address maker; - address taker; - address makerToken; - address takerToken; - address feeRecipient; - uint makerTokenAmount; - uint takerTokenAmount; - uint makerFee; - uint takerFee; - uint expirationTimestampInSec; - bytes32 orderHash; - } - - function Exchange(address _zrxToken, address _tokenTransferProxy) { - ZRX_TOKEN_CONTRACT = _zrxToken; - TOKEN_TRANSFER_PROXY_CONTRACT = _tokenTransferProxy; - } - - /* - * Core exchange functions - */ - - /// @dev Fills the input order. - /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient. - /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt. - /// @param fillTakerTokenAmount Desired amount of takerToken to fill. - /// @param shouldThrowOnInsufficientBalanceOrAllowance Test if transfer will fail before attempting. - /// @param v ECDSA signature parameter v. - /// @param r ECDSA signature parameters r. - /// @param s ECDSA signature parameters s. - /// @return Total amount of takerToken filled in trade. - function fillOrder( - address[5] orderAddresses, - uint[6] orderValues, - uint fillTakerTokenAmount, - bool shouldThrowOnInsufficientBalanceOrAllowance, - uint8 v, - bytes32 r, - bytes32 s) - public - returns (uint filledTakerTokenAmount) - { - Order memory order = Order({ - maker: orderAddresses[0], - taker: orderAddresses[1], - makerToken: orderAddresses[2], - takerToken: orderAddresses[3], - feeRecipient: orderAddresses[4], - makerTokenAmount: orderValues[0], - takerTokenAmount: orderValues[1], - makerFee: orderValues[2], - takerFee: orderValues[3], - expirationTimestampInSec: orderValues[4], - orderHash: getOrderHash(orderAddresses, orderValues) - }); - - require(order.taker == address(0) || order.taker == msg.sender); - require(order.makerTokenAmount > 0 && order.takerTokenAmount > 0 && fillTakerTokenAmount > 0); - require(isValidSignature( - order.maker, - order.orderHash, - v, - r, - s - )); - - if (block.timestamp >= order.expirationTimestampInSec) { - LogError(uint8(Errors.ORDER_EXPIRED), order.orderHash); - return 0; - } - - uint remainingTakerTokenAmount = safeSub(order.takerTokenAmount, getUnavailableTakerTokenAmount(order.orderHash)); - filledTakerTokenAmount = min256(fillTakerTokenAmount, remainingTakerTokenAmount); - if (filledTakerTokenAmount == 0) { - LogError(uint8(Errors.ORDER_FULLY_FILLED_OR_CANCELLED), order.orderHash); - return 0; - } - - if (isRoundingError(filledTakerTokenAmount, order.takerTokenAmount, order.makerTokenAmount)) { - LogError(uint8(Errors.ROUNDING_ERROR_TOO_LARGE), order.orderHash); - return 0; - } - - if (!shouldThrowOnInsufficientBalanceOrAllowance && !isTransferable(order, filledTakerTokenAmount)) { - LogError(uint8(Errors.INSUFFICIENT_BALANCE_OR_ALLOWANCE), order.orderHash); - return 0; - } - - uint filledMakerTokenAmount = getPartialAmount(filledTakerTokenAmount, order.takerTokenAmount, order.makerTokenAmount); - uint paidMakerFee; - uint paidTakerFee; - filled[order.orderHash] = safeAdd(filled[order.orderHash], filledTakerTokenAmount); - require(transferViaTokenTransferProxy( - order.makerToken, - order.maker, - msg.sender, - filledMakerTokenAmount - )); - require(transferViaTokenTransferProxy( - order.takerToken, - msg.sender, - order.maker, - filledTakerTokenAmount - )); - if (order.feeRecipient != address(0)) { - if (order.makerFee > 0) { - paidMakerFee = getPartialAmount(filledTakerTokenAmount, order.takerTokenAmount, order.makerFee); - require(transferViaTokenTransferProxy( - ZRX_TOKEN_CONTRACT, - order.maker, - order.feeRecipient, - paidMakerFee - )); - } - if (order.takerFee > 0) { - paidTakerFee = getPartialAmount(filledTakerTokenAmount, order.takerTokenAmount, order.takerFee); - require(transferViaTokenTransferProxy( - ZRX_TOKEN_CONTRACT, - msg.sender, - order.feeRecipient, - paidTakerFee - )); - } - } - - LogFill( - order.maker, - msg.sender, - order.feeRecipient, - order.makerToken, - order.takerToken, - filledMakerTokenAmount, - filledTakerTokenAmount, - paidMakerFee, - paidTakerFee, - keccak256(order.makerToken, order.takerToken), - order.orderHash - ); - return filledTakerTokenAmount; - } - - /// @dev Cancels the input order. - /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient. - /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt. - /// @param cancelTakerTokenAmount Desired amount of takerToken to cancel in order. - /// @return Amount of takerToken cancelled. - function cancelOrder( - address[5] orderAddresses, - uint[6] orderValues, - uint cancelTakerTokenAmount) - public - returns (uint) - { - Order memory order = Order({ - maker: orderAddresses[0], - taker: orderAddresses[1], - makerToken: orderAddresses[2], - takerToken: orderAddresses[3], - feeRecipient: orderAddresses[4], - makerTokenAmount: orderValues[0], - takerTokenAmount: orderValues[1], - makerFee: orderValues[2], - takerFee: orderValues[3], - expirationTimestampInSec: orderValues[4], - orderHash: getOrderHash(orderAddresses, orderValues) - }); - - require(order.maker == msg.sender); - require(order.makerTokenAmount > 0 && order.takerTokenAmount > 0 && cancelTakerTokenAmount > 0); - - if (block.timestamp >= order.expirationTimestampInSec) { - LogError(uint8(Errors.ORDER_EXPIRED), order.orderHash); - return 0; - } - - uint remainingTakerTokenAmount = safeSub(order.takerTokenAmount, getUnavailableTakerTokenAmount(order.orderHash)); - uint cancelledTakerTokenAmount = min256(cancelTakerTokenAmount, remainingTakerTokenAmount); - if (cancelledTakerTokenAmount == 0) { - LogError(uint8(Errors.ORDER_FULLY_FILLED_OR_CANCELLED), order.orderHash); - return 0; - } - - cancelled[order.orderHash] = safeAdd(cancelled[order.orderHash], cancelledTakerTokenAmount); - - LogCancel( - order.maker, - order.feeRecipient, - order.makerToken, - order.takerToken, - getPartialAmount(cancelledTakerTokenAmount, order.takerTokenAmount, order.makerTokenAmount), - cancelledTakerTokenAmount, - keccak256(order.makerToken, order.takerToken), - order.orderHash - ); - return cancelledTakerTokenAmount; - } - - /* - * Wrapper functions - */ - - /// @dev Fills an order with specified parameters and ECDSA signature, throws if specified amount not filled entirely. - /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient. - /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt. - /// @param fillTakerTokenAmount Desired amount of takerToken to fill. - /// @param v ECDSA signature parameter v. - /// @param r ECDSA signature parameters r. - /// @param s ECDSA signature parameters s. - function fillOrKillOrder( - address[5] orderAddresses, - uint[6] orderValues, - uint fillTakerTokenAmount, - uint8 v, - bytes32 r, - bytes32 s) - public - { - require(fillOrder( - orderAddresses, - orderValues, - fillTakerTokenAmount, - false, - v, - r, - s - ) == fillTakerTokenAmount); - } - - /// @dev Synchronously executes multiple fill orders in a single transaction. - /// @param orderAddresses Array of address arrays containing individual order addresses. - /// @param orderValues Array of uint arrays containing individual order values. - /// @param fillTakerTokenAmounts Array of desired amounts of takerToken to fill in orders. - /// @param shouldThrowOnInsufficientBalanceOrAllowance Test if transfers will fail before attempting. - /// @param v Array ECDSA signature v parameters. - /// @param r Array of ECDSA signature r parameters. - /// @param s Array of ECDSA signature s parameters. - function batchFillOrders( - address[5][] orderAddresses, - uint[6][] orderValues, - uint[] fillTakerTokenAmounts, - bool shouldThrowOnInsufficientBalanceOrAllowance, - uint8[] v, - bytes32[] r, - bytes32[] s) - public - { - for (uint i = 0; i < orderAddresses.length; i++) { - fillOrder( - orderAddresses[i], - orderValues[i], - fillTakerTokenAmounts[i], - shouldThrowOnInsufficientBalanceOrAllowance, - v[i], - r[i], - s[i] - ); - } - } - - /// @dev Synchronously executes multiple fillOrKill orders in a single transaction. - /// @param orderAddresses Array of address arrays containing individual order addresses. - /// @param orderValues Array of uint arrays containing individual order values. - /// @param fillTakerTokenAmounts Array of desired amounts of takerToken to fill in orders. - /// @param v Array ECDSA signature v parameters. - /// @param r Array of ECDSA signature r parameters. - /// @param s Array of ECDSA signature s parameters. - function batchFillOrKillOrders( - address[5][] orderAddresses, - uint[6][] orderValues, - uint[] fillTakerTokenAmounts, - uint8[] v, - bytes32[] r, - bytes32[] s) - public - { - for (uint i = 0; i < orderAddresses.length; i++) { - fillOrKillOrder( - orderAddresses[i], - orderValues[i], - fillTakerTokenAmounts[i], - v[i], - r[i], - s[i] - ); - } - } - - /// @dev Synchronously executes multiple fill orders in a single transaction until total fillTakerTokenAmount filled. - /// @param orderAddresses Array of address arrays containing individual order addresses. - /// @param orderValues Array of uint arrays containing individual order values. - /// @param fillTakerTokenAmount Desired total amount of takerToken to fill in orders. - /// @param shouldThrowOnInsufficientBalanceOrAllowance Test if transfers will fail before attempting. - /// @param v Array ECDSA signature v parameters. - /// @param r Array of ECDSA signature r parameters. - /// @param s Array of ECDSA signature s parameters. - /// @return Total amount of fillTakerTokenAmount filled in orders. - function fillOrdersUpTo( - address[5][] orderAddresses, - uint[6][] orderValues, - uint fillTakerTokenAmount, - bool shouldThrowOnInsufficientBalanceOrAllowance, - uint8[] v, - bytes32[] r, - bytes32[] s) - public - returns (uint) - { - uint filledTakerTokenAmount = 0; - for (uint i = 0; i < orderAddresses.length; i++) { - require(orderAddresses[i][3] == orderAddresses[0][3]); // takerToken must be the same for each order - filledTakerTokenAmount = safeAdd(filledTakerTokenAmount, fillOrder( - orderAddresses[i], - orderValues[i], - safeSub(fillTakerTokenAmount, filledTakerTokenAmount), - shouldThrowOnInsufficientBalanceOrAllowance, - v[i], - r[i], - s[i] - )); - if (filledTakerTokenAmount == fillTakerTokenAmount) break; - } - return filledTakerTokenAmount; - } - - /// @dev Synchronously cancels multiple orders in a single transaction. - /// @param orderAddresses Array of address arrays containing individual order addresses. - /// @param orderValues Array of uint arrays containing individual order values. - /// @param cancelTakerTokenAmounts Array of desired amounts of takerToken to cancel in orders. - function batchCancelOrders( - address[5][] orderAddresses, - uint[6][] orderValues, - uint[] cancelTakerTokenAmounts) - public - { - for (uint i = 0; i < orderAddresses.length; i++) { - cancelOrder( - orderAddresses[i], - orderValues[i], - cancelTakerTokenAmounts[i] - ); - } - } - - /* - * Constant public functions - */ - - /// @dev Calculates Keccak-256 hash of order with specified parameters. - /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient. - /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt. - /// @return Keccak-256 hash of order. - function getOrderHash(address[5] orderAddresses, uint[6] orderValues) - public - constant - returns (bytes32) - { - return keccak256( - address(this), - orderAddresses[0], // maker - orderAddresses[1], // taker - orderAddresses[2], // makerToken - orderAddresses[3], // takerToken - orderAddresses[4], // feeRecipient - orderValues[0], // makerTokenAmount - orderValues[1], // takerTokenAmount - orderValues[2], // makerFee - orderValues[3], // takerFee - orderValues[4], // expirationTimestampInSec - orderValues[5] // salt - ); - } - - /// @dev Verifies that an order signature is valid. - /// @param signer address of signer. - /// @param hash Signed Keccak-256 hash. - /// @param v ECDSA signature parameter v. - /// @param r ECDSA signature parameters r. - /// @param s ECDSA signature parameters s. - /// @return Validity of order signature. - function isValidSignature( - address signer, - bytes32 hash, - uint8 v, - bytes32 r, - bytes32 s) - public - constant - returns (bool) - { - return signer == ecrecover( - keccak256("\x19Ethereum Signed Message:\n32", hash), - v, - r, - s - ); - } - - /// @dev Checks if rounding error > 0.1%. - /// @param numerator Numerator. - /// @param denominator Denominator. - /// @param target Value to multiply with numerator/denominator. - /// @return Rounding error is present. - function isRoundingError(uint numerator, uint denominator, uint target) - public - constant - returns (bool) - { - uint remainder = mulmod(target, numerator, denominator); - if (remainder == 0) return false; // No rounding error. - - uint errPercentageTimes1000000 = safeDiv( - safeMul(remainder, 1000000), - safeMul(numerator, target) - ); - return errPercentageTimes1000000 > 1000; - } - - /// @dev Calculates partial value given a numerator and denominator. - /// @param numerator Numerator. - /// @param denominator Denominator. - /// @param target Value to calculate partial of. - /// @return Partial value of target. - function getPartialAmount(uint numerator, uint denominator, uint target) - public - constant - returns (uint) - { - return safeDiv(safeMul(numerator, target), denominator); - } - - /// @dev Calculates the sum of values already filled and cancelled for a given order. - /// @param orderHash The Keccak-256 hash of the given order. - /// @return Sum of values already filled and cancelled. - function getUnavailableTakerTokenAmount(bytes32 orderHash) - public - constant - returns (uint) - { - return safeAdd(filled[orderHash], cancelled[orderHash]); - } - - - /* - * Internal functions - */ - - /// @dev Transfers a token using TokenTransferProxy transferFrom function. - /// @param token Address of token to transferFrom. - /// @param from Address transfering token. - /// @param to Address receiving token. - /// @param value Amount of token to transfer. - /// @return Success of token transfer. - function transferViaTokenTransferProxy( - address token, - address from, - address to, - uint value) - internal - returns (bool) - { - return TokenTransferProxy(TOKEN_TRANSFER_PROXY_CONTRACT).transferFrom(token, from, to, value); - } - - /// @dev Checks if any order transfers will fail. - /// @param order Order struct of params that will be checked. - /// @param fillTakerTokenAmount Desired amount of takerToken to fill. - /// @return Predicted result of transfers. - function isTransferable(Order order, uint fillTakerTokenAmount) - internal - constant // The called token contracts may attempt to change state, but will not be able to due to gas limits on getBalance and getAllowance. - returns (bool) - { - address taker = msg.sender; - uint fillMakerTokenAmount = getPartialAmount(fillTakerTokenAmount, order.takerTokenAmount, order.makerTokenAmount); - - if (order.feeRecipient != address(0)) { - bool isMakerTokenZRX = order.makerToken == ZRX_TOKEN_CONTRACT; - bool isTakerTokenZRX = order.takerToken == ZRX_TOKEN_CONTRACT; - uint paidMakerFee = getPartialAmount(fillTakerTokenAmount, order.takerTokenAmount, order.makerFee); - uint paidTakerFee = getPartialAmount(fillTakerTokenAmount, order.takerTokenAmount, order.takerFee); - uint requiredMakerZRX = isMakerTokenZRX ? safeAdd(fillMakerTokenAmount, paidMakerFee) : paidMakerFee; - uint requiredTakerZRX = isTakerTokenZRX ? safeAdd(fillTakerTokenAmount, paidTakerFee) : paidTakerFee; - - if ( getBalance(ZRX_TOKEN_CONTRACT, order.maker) < requiredMakerZRX - || getAllowance(ZRX_TOKEN_CONTRACT, order.maker) < requiredMakerZRX - || getBalance(ZRX_TOKEN_CONTRACT, taker) < requiredTakerZRX - || getAllowance(ZRX_TOKEN_CONTRACT, taker) < requiredTakerZRX - ) return false; - - if (!isMakerTokenZRX && ( getBalance(order.makerToken, order.maker) < fillMakerTokenAmount // Don't double check makerToken if ZRX - || getAllowance(order.makerToken, order.maker) < fillMakerTokenAmount) - ) return false; - if (!isTakerTokenZRX && ( getBalance(order.takerToken, taker) < fillTakerTokenAmount // Don't double check takerToken if ZRX - || getAllowance(order.takerToken, taker) < fillTakerTokenAmount) - ) return false; - } else if ( getBalance(order.makerToken, order.maker) < fillMakerTokenAmount - || getAllowance(order.makerToken, order.maker) < fillMakerTokenAmount - || getBalance(order.takerToken, taker) < fillTakerTokenAmount - || getAllowance(order.takerToken, taker) < fillTakerTokenAmount - ) return false; - - return true; - } - - /// @dev Get token balance of an address. - /// @param token Address of token. - /// @param owner Address of owner. - /// @return Token balance of owner. - function getBalance(address token, address owner) - internal - constant // The called token contract may attempt to change state, but will not be able to due to an added gas limit. - returns (uint) - { - return Token(token).balanceOf.gas(EXTERNAL_QUERY_GAS_LIMIT)(owner); // Limit gas to prevent reentrancy - } - - /// @dev Get allowance of token given to TokenTransferProxy by an address. - /// @param token Address of token. - /// @param owner Address of owner. - /// @return Allowance of token given to TokenTransferProxy by owner. - function getAllowance(address token, address owner) - internal - constant // The called token contract may attempt to change state, but will not be able to due to an added gas limit. - returns (uint) - { - return Token(token).allowance.gas(EXTERNAL_QUERY_GAS_LIMIT)(owner, TOKEN_TRANSFER_PROXY_CONTRACT); // Limit gas to prevent reentrancy - } -} diff --git a/packages/contracts/contracts/Exchange/Exchange.sol b/packages/contracts/contracts/Exchange/Exchange.sol new file mode 100644 index 000000000..db2ce6584 --- /dev/null +++ b/packages/contracts/contracts/Exchange/Exchange.sol @@ -0,0 +1,602 @@ +/* + + Copyright 2017 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity ^0.4.11; + +import "../TokenTransferProxy/TokenTransferProxy.sol"; +import "../../contracts_old/Token/v1.sol"; +import "../../contracts_old/SafeMath/v1.sol"; + +/// @title Exchange - Facilitates exchange of ERC20 tokens. +/// @author Amir Bandeali - , Will Warren - +contract Exchange is SafeMath { + + // Error Codes + enum Errors { + ORDER_EXPIRED, // Order has already expired + ORDER_FULLY_FILLED_OR_CANCELLED, // Order has already been fully filled or cancelled + ROUNDING_ERROR_TOO_LARGE, // Rounding error too large + INSUFFICIENT_BALANCE_OR_ALLOWANCE // Insufficient balance or allowance for token transfer + } + + string constant public VERSION = "1.0.0"; + uint16 constant public EXTERNAL_QUERY_GAS_LIMIT = 4999; // Changes to state require at least 5000 gas + + address public ZRX_TOKEN_CONTRACT; + address public TOKEN_TRANSFER_PROXY_CONTRACT; + + // Mappings of orderHash => amounts of takerTokenAmount filled or cancelled. + mapping (bytes32 => uint) public filled; + mapping (bytes32 => uint) public cancelled; + + event LogFill( + address indexed maker, + address taker, + address indexed feeRecipient, + address makerToken, + address takerToken, + uint filledMakerTokenAmount, + uint filledTakerTokenAmount, + uint paidMakerFee, + uint paidTakerFee, + bytes32 indexed tokens, // keccak256(makerToken, takerToken), allows subscribing to a token pair + bytes32 orderHash + ); + + event LogCancel( + address indexed maker, + address indexed feeRecipient, + address makerToken, + address takerToken, + uint cancelledMakerTokenAmount, + uint cancelledTakerTokenAmount, + bytes32 indexed tokens, + bytes32 orderHash + ); + + event LogError(uint8 indexed errorId, bytes32 indexed orderHash); + + struct Order { + address maker; + address taker; + address makerToken; + address takerToken; + address feeRecipient; + uint makerTokenAmount; + uint takerTokenAmount; + uint makerFee; + uint takerFee; + uint expirationTimestampInSec; + bytes32 orderHash; + } + + function Exchange(address _zrxToken, address _tokenTransferProxy) { + ZRX_TOKEN_CONTRACT = _zrxToken; + TOKEN_TRANSFER_PROXY_CONTRACT = _tokenTransferProxy; + } + + /* + * Core exchange functions + */ + + /// @dev Fills the input order. + /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient. + /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt. + /// @param fillTakerTokenAmount Desired amount of takerToken to fill. + /// @param shouldThrowOnInsufficientBalanceOrAllowance Test if transfer will fail before attempting. + /// @param v ECDSA signature parameter v. + /// @param r ECDSA signature parameters r. + /// @param s ECDSA signature parameters s. + /// @return Total amount of takerToken filled in trade. + function fillOrder( + address[5] orderAddresses, + uint[6] orderValues, + uint fillTakerTokenAmount, + bool shouldThrowOnInsufficientBalanceOrAllowance, + uint8 v, + bytes32 r, + bytes32 s) + public + returns (uint filledTakerTokenAmount) + { + Order memory order = Order({ + maker: orderAddresses[0], + taker: orderAddresses[1], + makerToken: orderAddresses[2], + takerToken: orderAddresses[3], + feeRecipient: orderAddresses[4], + makerTokenAmount: orderValues[0], + takerTokenAmount: orderValues[1], + makerFee: orderValues[2], + takerFee: orderValues[3], + expirationTimestampInSec: orderValues[4], + orderHash: getOrderHash(orderAddresses, orderValues) + }); + + require(order.taker == address(0) || order.taker == msg.sender); + require(order.makerTokenAmount > 0 && order.takerTokenAmount > 0 && fillTakerTokenAmount > 0); + require(isValidSignature( + order.maker, + order.orderHash, + v, + r, + s + )); + + if (block.timestamp >= order.expirationTimestampInSec) { + LogError(uint8(Errors.ORDER_EXPIRED), order.orderHash); + return 0; + } + + uint remainingTakerTokenAmount = safeSub(order.takerTokenAmount, getUnavailableTakerTokenAmount(order.orderHash)); + filledTakerTokenAmount = min256(fillTakerTokenAmount, remainingTakerTokenAmount); + if (filledTakerTokenAmount == 0) { + LogError(uint8(Errors.ORDER_FULLY_FILLED_OR_CANCELLED), order.orderHash); + return 0; + } + + if (isRoundingError(filledTakerTokenAmount, order.takerTokenAmount, order.makerTokenAmount)) { + LogError(uint8(Errors.ROUNDING_ERROR_TOO_LARGE), order.orderHash); + return 0; + } + + if (!shouldThrowOnInsufficientBalanceOrAllowance && !isTransferable(order, filledTakerTokenAmount)) { + LogError(uint8(Errors.INSUFFICIENT_BALANCE_OR_ALLOWANCE), order.orderHash); + return 0; + } + + uint filledMakerTokenAmount = getPartialAmount(filledTakerTokenAmount, order.takerTokenAmount, order.makerTokenAmount); + uint paidMakerFee; + uint paidTakerFee; + filled[order.orderHash] = safeAdd(filled[order.orderHash], filledTakerTokenAmount); + require(transferViaTokenTransferProxy( + order.makerToken, + order.maker, + msg.sender, + filledMakerTokenAmount + )); + require(transferViaTokenTransferProxy( + order.takerToken, + msg.sender, + order.maker, + filledTakerTokenAmount + )); + if (order.feeRecipient != address(0)) { + if (order.makerFee > 0) { + paidMakerFee = getPartialAmount(filledTakerTokenAmount, order.takerTokenAmount, order.makerFee); + require(transferViaTokenTransferProxy( + ZRX_TOKEN_CONTRACT, + order.maker, + order.feeRecipient, + paidMakerFee + )); + } + if (order.takerFee > 0) { + paidTakerFee = getPartialAmount(filledTakerTokenAmount, order.takerTokenAmount, order.takerFee); + require(transferViaTokenTransferProxy( + ZRX_TOKEN_CONTRACT, + msg.sender, + order.feeRecipient, + paidTakerFee + )); + } + } + + LogFill( + order.maker, + msg.sender, + order.feeRecipient, + order.makerToken, + order.takerToken, + filledMakerTokenAmount, + filledTakerTokenAmount, + paidMakerFee, + paidTakerFee, + keccak256(order.makerToken, order.takerToken), + order.orderHash + ); + return filledTakerTokenAmount; + } + + /// @dev Cancels the input order. + /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient. + /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt. + /// @param cancelTakerTokenAmount Desired amount of takerToken to cancel in order. + /// @return Amount of takerToken cancelled. + function cancelOrder( + address[5] orderAddresses, + uint[6] orderValues, + uint cancelTakerTokenAmount) + public + returns (uint) + { + Order memory order = Order({ + maker: orderAddresses[0], + taker: orderAddresses[1], + makerToken: orderAddresses[2], + takerToken: orderAddresses[3], + feeRecipient: orderAddresses[4], + makerTokenAmount: orderValues[0], + takerTokenAmount: orderValues[1], + makerFee: orderValues[2], + takerFee: orderValues[3], + expirationTimestampInSec: orderValues[4], + orderHash: getOrderHash(orderAddresses, orderValues) + }); + + require(order.maker == msg.sender); + require(order.makerTokenAmount > 0 && order.takerTokenAmount > 0 && cancelTakerTokenAmount > 0); + + if (block.timestamp >= order.expirationTimestampInSec) { + LogError(uint8(Errors.ORDER_EXPIRED), order.orderHash); + return 0; + } + + uint remainingTakerTokenAmount = safeSub(order.takerTokenAmount, getUnavailableTakerTokenAmount(order.orderHash)); + uint cancelledTakerTokenAmount = min256(cancelTakerTokenAmount, remainingTakerTokenAmount); + if (cancelledTakerTokenAmount == 0) { + LogError(uint8(Errors.ORDER_FULLY_FILLED_OR_CANCELLED), order.orderHash); + return 0; + } + + cancelled[order.orderHash] = safeAdd(cancelled[order.orderHash], cancelledTakerTokenAmount); + + LogCancel( + order.maker, + order.feeRecipient, + order.makerToken, + order.takerToken, + getPartialAmount(cancelledTakerTokenAmount, order.takerTokenAmount, order.makerTokenAmount), + cancelledTakerTokenAmount, + keccak256(order.makerToken, order.takerToken), + order.orderHash + ); + return cancelledTakerTokenAmount; + } + + /* + * Wrapper functions + */ + + /// @dev Fills an order with specified parameters and ECDSA signature, throws if specified amount not filled entirely. + /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient. + /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt. + /// @param fillTakerTokenAmount Desired amount of takerToken to fill. + /// @param v ECDSA signature parameter v. + /// @param r ECDSA signature parameters r. + /// @param s ECDSA signature parameters s. + function fillOrKillOrder( + address[5] orderAddresses, + uint[6] orderValues, + uint fillTakerTokenAmount, + uint8 v, + bytes32 r, + bytes32 s) + public + { + require(fillOrder( + orderAddresses, + orderValues, + fillTakerTokenAmount, + false, + v, + r, + s + ) == fillTakerTokenAmount); + } + + /// @dev Synchronously executes multiple fill orders in a single transaction. + /// @param orderAddresses Array of address arrays containing individual order addresses. + /// @param orderValues Array of uint arrays containing individual order values. + /// @param fillTakerTokenAmounts Array of desired amounts of takerToken to fill in orders. + /// @param shouldThrowOnInsufficientBalanceOrAllowance Test if transfers will fail before attempting. + /// @param v Array ECDSA signature v parameters. + /// @param r Array of ECDSA signature r parameters. + /// @param s Array of ECDSA signature s parameters. + function batchFillOrders( + address[5][] orderAddresses, + uint[6][] orderValues, + uint[] fillTakerTokenAmounts, + bool shouldThrowOnInsufficientBalanceOrAllowance, + uint8[] v, + bytes32[] r, + bytes32[] s) + public + { + for (uint i = 0; i < orderAddresses.length; i++) { + fillOrder( + orderAddresses[i], + orderValues[i], + fillTakerTokenAmounts[i], + shouldThrowOnInsufficientBalanceOrAllowance, + v[i], + r[i], + s[i] + ); + } + } + + /// @dev Synchronously executes multiple fillOrKill orders in a single transaction. + /// @param orderAddresses Array of address arrays containing individual order addresses. + /// @param orderValues Array of uint arrays containing individual order values. + /// @param fillTakerTokenAmounts Array of desired amounts of takerToken to fill in orders. + /// @param v Array ECDSA signature v parameters. + /// @param r Array of ECDSA signature r parameters. + /// @param s Array of ECDSA signature s parameters. + function batchFillOrKillOrders( + address[5][] orderAddresses, + uint[6][] orderValues, + uint[] fillTakerTokenAmounts, + uint8[] v, + bytes32[] r, + bytes32[] s) + public + { + for (uint i = 0; i < orderAddresses.length; i++) { + fillOrKillOrder( + orderAddresses[i], + orderValues[i], + fillTakerTokenAmounts[i], + v[i], + r[i], + s[i] + ); + } + } + + /// @dev Synchronously executes multiple fill orders in a single transaction until total fillTakerTokenAmount filled. + /// @param orderAddresses Array of address arrays containing individual order addresses. + /// @param orderValues Array of uint arrays containing individual order values. + /// @param fillTakerTokenAmount Desired total amount of takerToken to fill in orders. + /// @param shouldThrowOnInsufficientBalanceOrAllowance Test if transfers will fail before attempting. + /// @param v Array ECDSA signature v parameters. + /// @param r Array of ECDSA signature r parameters. + /// @param s Array of ECDSA signature s parameters. + /// @return Total amount of fillTakerTokenAmount filled in orders. + function fillOrdersUpTo( + address[5][] orderAddresses, + uint[6][] orderValues, + uint fillTakerTokenAmount, + bool shouldThrowOnInsufficientBalanceOrAllowance, + uint8[] v, + bytes32[] r, + bytes32[] s) + public + returns (uint) + { + uint filledTakerTokenAmount = 0; + for (uint i = 0; i < orderAddresses.length; i++) { + require(orderAddresses[i][3] == orderAddresses[0][3]); // takerToken must be the same for each order + filledTakerTokenAmount = safeAdd(filledTakerTokenAmount, fillOrder( + orderAddresses[i], + orderValues[i], + safeSub(fillTakerTokenAmount, filledTakerTokenAmount), + shouldThrowOnInsufficientBalanceOrAllowance, + v[i], + r[i], + s[i] + )); + if (filledTakerTokenAmount == fillTakerTokenAmount) break; + } + return filledTakerTokenAmount; + } + + /// @dev Synchronously cancels multiple orders in a single transaction. + /// @param orderAddresses Array of address arrays containing individual order addresses. + /// @param orderValues Array of uint arrays containing individual order values. + /// @param cancelTakerTokenAmounts Array of desired amounts of takerToken to cancel in orders. + function batchCancelOrders( + address[5][] orderAddresses, + uint[6][] orderValues, + uint[] cancelTakerTokenAmounts) + public + { + for (uint i = 0; i < orderAddresses.length; i++) { + cancelOrder( + orderAddresses[i], + orderValues[i], + cancelTakerTokenAmounts[i] + ); + } + } + + /* + * Constant public functions + */ + + /// @dev Calculates Keccak-256 hash of order with specified parameters. + /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient. + /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt. + /// @return Keccak-256 hash of order. + function getOrderHash(address[5] orderAddresses, uint[6] orderValues) + public + constant + returns (bytes32) + { + return keccak256( + address(this), + orderAddresses[0], // maker + orderAddresses[1], // taker + orderAddresses[2], // makerToken + orderAddresses[3], // takerToken + orderAddresses[4], // feeRecipient + orderValues[0], // makerTokenAmount + orderValues[1], // takerTokenAmount + orderValues[2], // makerFee + orderValues[3], // takerFee + orderValues[4], // expirationTimestampInSec + orderValues[5] // salt + ); + } + + /// @dev Verifies that an order signature is valid. + /// @param signer address of signer. + /// @param hash Signed Keccak-256 hash. + /// @param v ECDSA signature parameter v. + /// @param r ECDSA signature parameters r. + /// @param s ECDSA signature parameters s. + /// @return Validity of order signature. + function isValidSignature( + address signer, + bytes32 hash, + uint8 v, + bytes32 r, + bytes32 s) + public + constant + returns (bool) + { + return signer == ecrecover( + keccak256("\x19Ethereum Signed Message:\n32", hash), + v, + r, + s + ); + } + + /// @dev Checks if rounding error > 0.1%. + /// @param numerator Numerator. + /// @param denominator Denominator. + /// @param target Value to multiply with numerator/denominator. + /// @return Rounding error is present. + function isRoundingError(uint numerator, uint denominator, uint target) + public + constant + returns (bool) + { + uint remainder = mulmod(target, numerator, denominator); + if (remainder == 0) return false; // No rounding error. + + uint errPercentageTimes1000000 = safeDiv( + safeMul(remainder, 1000000), + safeMul(numerator, target) + ); + return errPercentageTimes1000000 > 1000; + } + + /// @dev Calculates partial value given a numerator and denominator. + /// @param numerator Numerator. + /// @param denominator Denominator. + /// @param target Value to calculate partial of. + /// @return Partial value of target. + function getPartialAmount(uint numerator, uint denominator, uint target) + public + constant + returns (uint) + { + return safeDiv(safeMul(numerator, target), denominator); + } + + /// @dev Calculates the sum of values already filled and cancelled for a given order. + /// @param orderHash The Keccak-256 hash of the given order. + /// @return Sum of values already filled and cancelled. + function getUnavailableTakerTokenAmount(bytes32 orderHash) + public + constant + returns (uint) + { + return safeAdd(filled[orderHash], cancelled[orderHash]); + } + + + /* + * Internal functions + */ + + /// @dev Transfers a token using TokenTransferProxy transferFrom function. + /// @param token Address of token to transferFrom. + /// @param from Address transfering token. + /// @param to Address receiving token. + /// @param value Amount of token to transfer. + /// @return Success of token transfer. + function transferViaTokenTransferProxy( + address token, + address from, + address to, + uint value) + internal + returns (bool) + { + return TokenTransferProxy(TOKEN_TRANSFER_PROXY_CONTRACT).transferFrom(token, from, to, value); + } + + /// @dev Checks if any order transfers will fail. + /// @param order Order struct of params that will be checked. + /// @param fillTakerTokenAmount Desired amount of takerToken to fill. + /// @return Predicted result of transfers. + function isTransferable(Order order, uint fillTakerTokenAmount) + internal + constant // The called token contracts may attempt to change state, but will not be able to due to gas limits on getBalance and getAllowance. + returns (bool) + { + address taker = msg.sender; + uint fillMakerTokenAmount = getPartialAmount(fillTakerTokenAmount, order.takerTokenAmount, order.makerTokenAmount); + + if (order.feeRecipient != address(0)) { + bool isMakerTokenZRX = order.makerToken == ZRX_TOKEN_CONTRACT; + bool isTakerTokenZRX = order.takerToken == ZRX_TOKEN_CONTRACT; + uint paidMakerFee = getPartialAmount(fillTakerTokenAmount, order.takerTokenAmount, order.makerFee); + uint paidTakerFee = getPartialAmount(fillTakerTokenAmount, order.takerTokenAmount, order.takerFee); + uint requiredMakerZRX = isMakerTokenZRX ? safeAdd(fillMakerTokenAmount, paidMakerFee) : paidMakerFee; + uint requiredTakerZRX = isTakerTokenZRX ? safeAdd(fillTakerTokenAmount, paidTakerFee) : paidTakerFee; + + if ( getBalance(ZRX_TOKEN_CONTRACT, order.maker) < requiredMakerZRX + || getAllowance(ZRX_TOKEN_CONTRACT, order.maker) < requiredMakerZRX + || getBalance(ZRX_TOKEN_CONTRACT, taker) < requiredTakerZRX + || getAllowance(ZRX_TOKEN_CONTRACT, taker) < requiredTakerZRX + ) return false; + + if (!isMakerTokenZRX && ( getBalance(order.makerToken, order.maker) < fillMakerTokenAmount // Don't double check makerToken if ZRX + || getAllowance(order.makerToken, order.maker) < fillMakerTokenAmount) + ) return false; + if (!isTakerTokenZRX && ( getBalance(order.takerToken, taker) < fillTakerTokenAmount // Don't double check takerToken if ZRX + || getAllowance(order.takerToken, taker) < fillTakerTokenAmount) + ) return false; + } else if ( getBalance(order.makerToken, order.maker) < fillMakerTokenAmount + || getAllowance(order.makerToken, order.maker) < fillMakerTokenAmount + || getBalance(order.takerToken, taker) < fillTakerTokenAmount + || getAllowance(order.takerToken, taker) < fillTakerTokenAmount + ) return false; + + return true; + } + + /// @dev Get token balance of an address. + /// @param token Address of token. + /// @param owner Address of owner. + /// @return Token balance of owner. + function getBalance(address token, address owner) + internal + constant // The called token contract may attempt to change state, but will not be able to due to an added gas limit. + returns (uint) + { + return Token(token).balanceOf.gas(EXTERNAL_QUERY_GAS_LIMIT)(owner); // Limit gas to prevent reentrancy + } + + /// @dev Get allowance of token given to TokenTransferProxy by an address. + /// @param token Address of token. + /// @param owner Address of owner. + /// @return Allowance of token given to TokenTransferProxy by owner. + function getAllowance(address token, address owner) + internal + constant // The called token contract may attempt to change state, but will not be able to due to an added gas limit. + returns (uint) + { + return Token(token).allowance.gas(EXTERNAL_QUERY_GAS_LIMIT)(owner, TOKEN_TRANSFER_PROXY_CONTRACT); // Limit gas to prevent reentrancy + } +} diff --git a/packages/contracts/contracts/MaliciousToken/MaliciousToken.sol b/packages/contracts/contracts/MaliciousToken/MaliciousToken.sol new file mode 100644 index 000000000..c3cace9af --- /dev/null +++ b/packages/contracts/contracts/MaliciousToken/MaliciousToken.sol @@ -0,0 +1,31 @@ +pragma solidity ^0.4.11; + +import "../StandardToken/StandardToken.sol"; + +contract MaliciousToken is StandardToken { + uint8 stateToUpdate = 1; // Not null so that change only requires 5000 gas + + function updateState() + internal + { + stateToUpdate++; + } + + function balanceOf(address _owner) + public + constant + returns (uint) + { + updateState(); + return balances[_owner]; + } + + function allowance(address _owner, address _spender) + public + constant + returns (uint) + { + updateState(); + return allowed[_owner][_spender]; + } +} diff --git a/packages/contracts/contracts/Mintable/Mintable.sol b/packages/contracts/contracts/Mintable/Mintable.sol new file mode 100644 index 000000000..2dbc0f349 --- /dev/null +++ b/packages/contracts/contracts/Mintable/Mintable.sol @@ -0,0 +1,18 @@ +pragma solidity 0.4.18; + +import "../UnlimitedAllowanceToken/UnlimitedAllowanceToken.sol"; +import "../SafeMath/SafeMath.sol"; + +/* + * Mintable + * Base contract that creates a mintable UnlimitedAllowanceToken + */ +contract Mintable is UnlimitedAllowanceToken, SafeMath { + function mint(uint _value) + public + { + require(_value <= 100000000000000000000); + balances[msg.sender] = safeAdd(_value, balances[msg.sender]); + totalSupply = safeAdd(totalSupply, _value); + } +} diff --git a/packages/contracts/contracts/MultiSigWallet/MultiSigWallet.sol b/packages/contracts/contracts/MultiSigWallet/MultiSigWallet.sol new file mode 100644 index 000000000..ae7ef06fd --- /dev/null +++ b/packages/contracts/contracts/MultiSigWallet/MultiSigWallet.sol @@ -0,0 +1,366 @@ +pragma solidity ^0.4.11; + +/// @title Multisignature wallet - Allows multiple parties to agree on transactions before execution. +/// @author Stefan George - +contract MultiSigWallet { + + uint constant public MAX_OWNER_COUNT = 50; + + event Confirmation(address indexed sender, uint indexed transactionId); + event Revocation(address indexed sender, uint indexed transactionId); + event Submission(uint indexed transactionId); + event Execution(uint indexed transactionId); + event ExecutionFailure(uint indexed transactionId); + event Deposit(address indexed sender, uint value); + event OwnerAddition(address indexed owner); + event OwnerRemoval(address indexed owner); + event RequirementChange(uint required); + + mapping (uint => Transaction) public transactions; + mapping (uint => mapping (address => bool)) public confirmations; + mapping (address => bool) public isOwner; + address[] public owners; + uint public required; + uint public transactionCount; + + struct Transaction { + address destination; + uint value; + bytes data; + bool executed; + } + + modifier onlyWallet() { + if (msg.sender != address(this)) + throw; + _; + } + + modifier ownerDoesNotExist(address owner) { + if (isOwner[owner]) + throw; + _; + } + + modifier ownerExists(address owner) { + if (!isOwner[owner]) + throw; + _; + } + + modifier transactionExists(uint transactionId) { + if (transactions[transactionId].destination == 0) + throw; + _; + } + + modifier confirmed(uint transactionId, address owner) { + if (!confirmations[transactionId][owner]) + throw; + _; + } + + modifier notConfirmed(uint transactionId, address owner) { + if (confirmations[transactionId][owner]) + throw; + _; + } + + modifier notExecuted(uint transactionId) { + if (transactions[transactionId].executed) + throw; + _; + } + + modifier notNull(address _address) { + if (_address == 0) + throw; + _; + } + + modifier validRequirement(uint ownerCount, uint _required) { + if ( ownerCount > MAX_OWNER_COUNT + || _required > ownerCount + || _required == 0 + || ownerCount == 0) + throw; + _; + } + + /// @dev Fallback function allows to deposit ether. + function() + payable + { + if (msg.value > 0) + Deposit(msg.sender, msg.value); + } + + /* + * Public functions + */ + /// @dev Contract constructor sets initial owners and required number of confirmations. + /// @param _owners List of initial owners. + /// @param _required Number of required confirmations. + function MultiSigWallet(address[] _owners, uint _required) + public + validRequirement(_owners.length, _required) + { + for (uint i=0; i<_owners.length; i++) { + if (isOwner[_owners[i]] || _owners[i] == 0) + throw; + isOwner[_owners[i]] = true; + } + owners = _owners; + required = _required; + } + + /// @dev Allows to add a new owner. Transaction has to be sent by wallet. + /// @param owner Address of new owner. + function addOwner(address owner) + public + onlyWallet + ownerDoesNotExist(owner) + notNull(owner) + validRequirement(owners.length + 1, required) + { + isOwner[owner] = true; + owners.push(owner); + OwnerAddition(owner); + } + + /// @dev Allows to remove an owner. Transaction has to be sent by wallet. + /// @param owner Address of owner. + function removeOwner(address owner) + public + onlyWallet + ownerExists(owner) + { + isOwner[owner] = false; + for (uint i=0; i owners.length) + changeRequirement(owners.length); + OwnerRemoval(owner); + } + + /// @dev Allows to replace an owner with a new owner. Transaction has to be sent by wallet. + /// @param owner Address of owner to be replaced. + /// @param owner Address of new owner. + function replaceOwner(address owner, address newOwner) + public + onlyWallet + ownerExists(owner) + ownerDoesNotExist(newOwner) + { + for (uint i=0; i +contract MultiSigWalletWithTimeLock is MultiSigWallet { + + event ConfirmationTimeSet(uint indexed transactionId, uint confirmationTime); + event TimeLockChange(uint secondsTimeLocked); + + uint public secondsTimeLocked; + + mapping (uint => uint) public confirmationTimes; + + modifier notFullyConfirmed(uint transactionId) { + require(!isConfirmed(transactionId)); + _; + } + + modifier fullyConfirmed(uint transactionId) { + require(isConfirmed(transactionId)); + _; + } + + modifier pastTimeLock(uint transactionId) { + require(block.timestamp >= confirmationTimes[transactionId] + secondsTimeLocked); + _; + } + + /* + * Public functions + */ + + /// @dev Contract constructor sets initial owners, required number of confirmations, and time lock. + /// @param _owners List of initial owners. + /// @param _required Number of required confirmations. + /// @param _secondsTimeLocked Duration needed after a transaction is confirmed and before it becomes executable, in seconds. + function MultiSigWalletWithTimeLock(address[] _owners, uint _required, uint _secondsTimeLocked) + public + MultiSigWallet(_owners, _required) + { + secondsTimeLocked = _secondsTimeLocked; + } + + /// @dev Changes the duration of the time lock for transactions. + /// @param _secondsTimeLocked Duration needed after a transaction is confirmed and before it becomes executable, in seconds. + function changeTimeLock(uint _secondsTimeLocked) + public + onlyWallet + { + secondsTimeLocked = _secondsTimeLocked; + TimeLockChange(_secondsTimeLocked); + } + + /// @dev Allows an owner to confirm a transaction. + /// @param transactionId Transaction ID. + function confirmTransaction(uint transactionId) + public + ownerExists(msg.sender) + transactionExists(transactionId) + notConfirmed(transactionId, msg.sender) + notFullyConfirmed(transactionId) + { + confirmations[transactionId][msg.sender] = true; + Confirmation(msg.sender, transactionId); + if (isConfirmed(transactionId)) { + setConfirmationTime(transactionId, block.timestamp); + } + } + + /// @dev Allows an owner to revoke a confirmation for a transaction. + /// @param transactionId Transaction ID. + function revokeConfirmation(uint transactionId) + public + ownerExists(msg.sender) + confirmed(transactionId, msg.sender) + notExecuted(transactionId) + notFullyConfirmed(transactionId) + { + confirmations[transactionId][msg.sender] = false; + Revocation(msg.sender, transactionId); + } + + /// @dev Allows anyone to execute a confirmed transaction. + /// @param transactionId Transaction ID. + function executeTransaction(uint transactionId) + public + notExecuted(transactionId) + fullyConfirmed(transactionId) + pastTimeLock(transactionId) + { + Transaction storage tx = transactions[transactionId]; + tx.executed = true; + if (tx.destination.call.value(tx.value)(tx.data)) + Execution(transactionId); + else { + ExecutionFailure(transactionId); + tx.executed = false; + } + } + + /* + * Internal functions + */ + + /// @dev Sets the time of when a submission first passed. + function setConfirmationTime(uint transactionId, uint confirmationTime) + internal + { + confirmationTimes[transactionId] = confirmationTime; + ConfirmationTimeSet(transactionId, confirmationTime); + } +} diff --git a/packages/contracts/contracts/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.sol b/packages/contracts/contracts/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.sol new file mode 100644 index 000000000..81a3d4637 --- /dev/null +++ b/packages/contracts/contracts/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.sol @@ -0,0 +1,82 @@ +/* + + Copyright 2017 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity ^0.4.11; + +import "../MultiSigWalletWithTimeLock/MultiSigWalletWithTimeLock.sol"; + +contract MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress is MultiSigWalletWithTimeLock { + + address public TOKEN_TRANSFER_PROXY_CONTRACT; + + modifier validRemoveAuthorizedAddressTx(uint transactionId) { + Transaction storage tx = transactions[transactionId]; + require(tx.destination == TOKEN_TRANSFER_PROXY_CONTRACT); + require(isFunctionRemoveAuthorizedAddress(tx.data)); + _; + } + + /// @dev Contract constructor sets initial owners, required number of confirmations, time lock, and tokenTransferProxy address. + /// @param _owners List of initial owners. + /// @param _required Number of required confirmations. + /// @param _secondsTimeLocked Duration needed after a transaction is confirmed and before it becomes executable, in seconds. + /// @param _tokenTransferProxy Address of TokenTransferProxy contract. + function MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress( + address[] _owners, + uint _required, + uint _secondsTimeLocked, + address _tokenTransferProxy) + public + MultiSigWalletWithTimeLock(_owners, _required, _secondsTimeLocked) + { + TOKEN_TRANSFER_PROXY_CONTRACT = _tokenTransferProxy; + } + + /// @dev Allows execution of removeAuthorizedAddress without time lock. + /// @param transactionId Transaction ID. + function executeRemoveAuthorizedAddress(uint transactionId) + public + notExecuted(transactionId) + fullyConfirmed(transactionId) + validRemoveAuthorizedAddressTx(transactionId) + { + Transaction storage tx = transactions[transactionId]; + tx.executed = true; + if (tx.destination.call.value(tx.value)(tx.data)) + Execution(transactionId); + else { + ExecutionFailure(transactionId); + tx.executed = false; + } + } + + /// @dev Compares first 4 bytes of byte array to removeAuthorizedAddress function signature. + /// @param data Transaction data. + /// @return Successful if data is a call to removeAuthorizedAddress. + function isFunctionRemoveAuthorizedAddress(bytes data) + public + constant + returns (bool) + { + bytes4 removeAuthorizedAddressSignature = bytes4(sha3("removeAuthorizedAddress(address)")); + for (uint i = 0; i < 4; i++) { + require(data[i] == removeAuthorizedAddressSignature[i]); + } + return true; + } +} diff --git a/packages/contracts/contracts/Ownable/Ownable.sol b/packages/contracts/contracts/Ownable/Ownable.sol new file mode 100644 index 000000000..199c3c1c1 --- /dev/null +++ b/packages/contracts/contracts/Ownable/Ownable.sol @@ -0,0 +1,32 @@ +pragma solidity 0.4.18; + +/* + * Ownable + * + * Base contract with an owner. + * Provides onlyOwner modifier, which prevents function from running if it is called by anyone other than the owner. + */ + +contract Ownable { + address public owner; + + function Ownable() + public + { + owner = msg.sender; + } + + modifier onlyOwner() { + require(msg.sender == owner); + _; + } + + function transferOwnership(address newOwner) + public + onlyOwner + { + if (newOwner != address(0)) { + owner = newOwner; + } + } +} diff --git a/packages/contracts/contracts/SafeMath/SafeMath.sol b/packages/contracts/contracts/SafeMath/SafeMath.sol new file mode 100644 index 000000000..325bddc82 --- /dev/null +++ b/packages/contracts/contracts/SafeMath/SafeMath.sol @@ -0,0 +1,73 @@ +pragma solidity 0.4.18; + +contract SafeMath { + function safeMul(uint a, uint b) + internal + pure + returns (uint256) + { + uint c = a * b; + assert(a == 0 || c / a == b); + return c; + } + + function safeDiv(uint a, uint b) + internal + pure + returns (uint256) + { + uint c = a / b; + return c; + } + + function safeSub(uint a, uint b) + internal + pure + returns (uint256) + { + assert(b <= a); + return a - b; + } + + function safeAdd(uint a, uint b) + internal + pure + returns (uint256) + { + uint c = a + b; + assert(c >= a); + return c; + } + + function max64(uint64 a, uint64 b) + internal + pure + returns (uint256) + { + return a >= b ? a : b; + } + + function min64(uint64 a, uint64 b) + internal + pure + returns (uint256) + { + return a < b ? a : b; + } + + function max256(uint256 a, uint256 b) + internal + pure + returns (uint256) + { + return a >= b ? a : b; + } + + function min256(uint256 a, uint256 b) + internal + pure + returns (uint256) + { + return a < b ? a : b; + } +} diff --git a/packages/contracts/contracts/StandardToken/StandardToken.sol b/packages/contracts/contracts/StandardToken/StandardToken.sol new file mode 100644 index 000000000..fbb886c7b --- /dev/null +++ b/packages/contracts/contracts/StandardToken/StandardToken.sol @@ -0,0 +1,44 @@ +pragma solidity ^0.4.11; + +import "../../contracts_old/Token/v1.sol"; + +contract StandardToken is Token { + + function transfer(address _to, uint _value) returns (bool) { + //Default assumes totalSupply can't be over max (2^256 - 1). + if (balances[msg.sender] >= _value && balances[_to] + _value >= balances[_to]) { + balances[msg.sender] -= _value; + balances[_to] += _value; + Transfer(msg.sender, _to, _value); + return true; + } else { return false; } + } + + function transferFrom(address _from, address _to, uint _value) returns (bool) { + if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value >= balances[_to]) { + balances[_to] += _value; + balances[_from] -= _value; + allowed[_from][msg.sender] -= _value; + Transfer(_from, _to, _value); + return true; + } else { return false; } + } + + function balanceOf(address _owner) constant returns (uint) { + return balances[_owner]; + } + + function approve(address _spender, uint _value) returns (bool) { + allowed[msg.sender][_spender] = _value; + Approval(msg.sender, _spender, _value); + return true; + } + + function allowance(address _owner, address _spender) constant returns (uint) { + return allowed[_owner][_spender]; + } + + mapping (address => uint) balances; + mapping (address => mapping (address => uint)) allowed; + uint public totalSupply; +} diff --git a/packages/contracts/contracts/Token/Token.sol b/packages/contracts/contracts/Token/Token.sol new file mode 100644 index 000000000..8688bcae8 --- /dev/null +++ b/packages/contracts/contracts/Token/Token.sol @@ -0,0 +1,35 @@ +pragma solidity 0.4.18; + +contract Token { + + /// @notice send `_value` token to `_to` from `msg.sender` + /// @param _to The address of the recipient + /// @param _value The amount of token to be transferred + /// @return Whether the transfer was successful or not + function transfer(address _to, uint _value) public returns (bool) {} + + /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from` + /// @param _from The address of the sender + /// @param _to The address of the recipient + /// @param _value The amount of token to be transferred + /// @return Whether the transfer was successful or not + function transferFrom(address _from, address _to, uint _value) public returns (bool) {} + + /// @notice `msg.sender` approves `_addr` to spend `_value` tokens + /// @param _spender The address of the account able to transfer the tokens + /// @param _value The amount of wei to be approved for transfer + /// @return Whether the approval was successful or not + function approve(address _spender, uint _value) public returns (bool) {} + + /// @param _owner The address from which the balance will be retrieved + /// @return The balance + function balanceOf(address _owner) public view returns (uint) {} + + /// @param _owner The address of the account owning tokens + /// @param _spender The address of the account able to transfer the tokens + /// @return Amount of remaining tokens allowed to spent + function allowance(address _owner, address _spender) public view returns (uint) {} + + event Transfer(address indexed _from, address indexed _to, uint _value); + event Approval(address indexed _owner, address indexed _spender, uint _value); +} diff --git a/packages/contracts/contracts/TokenRegistry.sol b/packages/contracts/contracts/TokenRegistry.sol deleted file mode 100644 index d2570e71d..000000000 --- a/packages/contracts/contracts/TokenRegistry.sol +++ /dev/null @@ -1,309 +0,0 @@ -/* - - Copyright 2017 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity ^0.4.11; - -import "./utils/Ownable.sol"; - -/// @title Token Registry - Stores metadata associated with ERC20 tokens. See ERC22 https://github.com/ethereum/EIPs/issues/22 -/// @author Amir Bandeali - , Will Warren - -contract TokenRegistry is Ownable { - - event LogAddToken( - address indexed token, - string name, - string symbol, - uint8 decimals, - bytes ipfsHash, - bytes swarmHash - ); - - event LogRemoveToken( - address indexed token, - string name, - string symbol, - uint8 decimals, - bytes ipfsHash, - bytes swarmHash - ); - - event LogTokenNameChange(address indexed token, string oldName, string newName); - event LogTokenSymbolChange(address indexed token, string oldSymbol, string newSymbol); - event LogTokenIpfsHashChange(address indexed token, bytes oldIpfsHash, bytes newIpfsHash); - event LogTokenSwarmHashChange(address indexed token, bytes oldSwarmHash, bytes newSwarmHash); - - mapping (address => TokenMetadata) public tokens; - mapping (string => address) tokenBySymbol; - mapping (string => address) tokenByName; - - address[] public tokenAddresses; - - struct TokenMetadata { - address token; - string name; - string symbol; - uint8 decimals; - bytes ipfsHash; - bytes swarmHash; - } - - modifier tokenExists(address _token) { - require(tokens[_token].token != address(0)); - _; - } - - modifier tokenDoesNotExist(address _token) { - require(tokens[_token].token == address(0)); - _; - } - - modifier nameDoesNotExist(string _name) { - require(tokenByName[_name] == address(0)); - _; - } - - modifier symbolDoesNotExist(string _symbol) { - require(tokenBySymbol[_symbol] == address(0)); - _; - } - - modifier addressNotNull(address _address) { - require(_address != address(0)); - _; - } - - - /// @dev Allows owner to add a new token to the registry. - /// @param _token Address of new token. - /// @param _name Name of new token. - /// @param _symbol Symbol for new token. - /// @param _decimals Number of decimals, divisibility of new token. - /// @param _ipfsHash IPFS hash of token icon. - /// @param _swarmHash Swarm hash of token icon. - function addToken( - address _token, - string _name, - string _symbol, - uint8 _decimals, - bytes _ipfsHash, - bytes _swarmHash) - public - onlyOwner - tokenDoesNotExist(_token) - addressNotNull(_token) - symbolDoesNotExist(_symbol) - nameDoesNotExist(_name) - { - tokens[_token] = TokenMetadata({ - token: _token, - name: _name, - symbol: _symbol, - decimals: _decimals, - ipfsHash: _ipfsHash, - swarmHash: _swarmHash - }); - tokenAddresses.push(_token); - tokenBySymbol[_symbol] = _token; - tokenByName[_name] = _token; - LogAddToken( - _token, - _name, - _symbol, - _decimals, - _ipfsHash, - _swarmHash - ); - } - - /// @dev Allows owner to remove an existing token from the registry. - /// @param _token Address of existing token. - function removeToken(address _token, uint _index) - public - onlyOwner - tokenExists(_token) - { - require(tokenAddresses[_index] == _token); - - tokenAddresses[_index] = tokenAddresses[tokenAddresses.length - 1]; - tokenAddresses.length -= 1; - - TokenMetadata storage token = tokens[_token]; - LogRemoveToken( - token.token, - token.name, - token.symbol, - token.decimals, - token.ipfsHash, - token.swarmHash - ); - delete tokenBySymbol[token.symbol]; - delete tokenByName[token.name]; - delete tokens[_token]; - } - - /// @dev Allows owner to modify an existing token's name. - /// @param _token Address of existing token. - /// @param _name New name. - function setTokenName(address _token, string _name) - public - onlyOwner - tokenExists(_token) - nameDoesNotExist(_name) - { - TokenMetadata storage token = tokens[_token]; - LogTokenNameChange(_token, token.name, _name); - delete tokenByName[token.name]; - tokenByName[_name] = _token; - token.name = _name; - } - - /// @dev Allows owner to modify an existing token's symbol. - /// @param _token Address of existing token. - /// @param _symbol New symbol. - function setTokenSymbol(address _token, string _symbol) - public - onlyOwner - tokenExists(_token) - symbolDoesNotExist(_symbol) - { - TokenMetadata storage token = tokens[_token]; - LogTokenSymbolChange(_token, token.symbol, _symbol); - delete tokenBySymbol[token.symbol]; - tokenBySymbol[_symbol] = _token; - token.symbol = _symbol; - } - - /// @dev Allows owner to modify an existing token's IPFS hash. - /// @param _token Address of existing token. - /// @param _ipfsHash New IPFS hash. - function setTokenIpfsHash(address _token, bytes _ipfsHash) - public - onlyOwner - tokenExists(_token) - { - TokenMetadata storage token = tokens[_token]; - LogTokenIpfsHashChange(_token, token.ipfsHash, _ipfsHash); - token.ipfsHash = _ipfsHash; - } - - /// @dev Allows owner to modify an existing token's Swarm hash. - /// @param _token Address of existing token. - /// @param _swarmHash New Swarm hash. - function setTokenSwarmHash(address _token, bytes _swarmHash) - public - onlyOwner - tokenExists(_token) - { - TokenMetadata storage token = tokens[_token]; - LogTokenSwarmHashChange(_token, token.swarmHash, _swarmHash); - token.swarmHash = _swarmHash; - } - - /* - * Web3 call functions - */ - - /// @dev Provides a registered token's address when given the token symbol. - /// @param _symbol Symbol of registered token. - /// @return Token's address. - function getTokenAddressBySymbol(string _symbol) constant returns (address) { - return tokenBySymbol[_symbol]; - } - - /// @dev Provides a registered token's address when given the token name. - /// @param _name Name of registered token. - /// @return Token's address. - function getTokenAddressByName(string _name) constant returns (address) { - return tokenByName[_name]; - } - - /// @dev Provides a registered token's metadata, looked up by address. - /// @param _token Address of registered token. - /// @return Token metadata. - function getTokenMetaData(address _token) - public - constant - returns ( - address, //tokenAddress - string, //name - string, //symbol - uint8, //decimals - bytes, //ipfsHash - bytes //swarmHash - ) - { - TokenMetadata memory token = tokens[_token]; - return ( - token.token, - token.name, - token.symbol, - token.decimals, - token.ipfsHash, - token.swarmHash - ); - } - - /// @dev Provides a registered token's metadata, looked up by name. - /// @param _name Name of registered token. - /// @return Token metadata. - function getTokenByName(string _name) - public - constant - returns ( - address, //tokenAddress - string, //name - string, //symbol - uint8, //decimals - bytes, //ipfsHash - bytes //swarmHash - ) - { - address _token = tokenByName[_name]; - return getTokenMetaData(_token); - } - - /// @dev Provides a registered token's metadata, looked up by symbol. - /// @param _symbol Symbol of registered token. - /// @return Token metadata. - function getTokenBySymbol(string _symbol) - public - constant - returns ( - address, //tokenAddress - string, //name - string, //symbol - uint8, //decimals - bytes, //ipfsHash - bytes //swarmHash - ) - { - address _token = tokenBySymbol[_symbol]; - return getTokenMetaData(_token); - } - - /// @dev Returns an array containing all token addresses. - /// @return Array of token addresses. - function getTokenAddresses() - public - constant - returns (address[]) - { - return tokenAddresses; - } -} - diff --git a/packages/contracts/contracts/TokenRegistry/TokenRegistry.sol b/packages/contracts/contracts/TokenRegistry/TokenRegistry.sol new file mode 100644 index 000000000..2a0cab36d --- /dev/null +++ b/packages/contracts/contracts/TokenRegistry/TokenRegistry.sol @@ -0,0 +1,308 @@ +/* + + Copyright 2017 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity ^0.4.11; + +import "../../contracts_old/Ownable/v1.sol"; + +/// @title Token Registry - Stores metadata associated with ERC20 tokens. See ERC22 https://github.com/ethereum/EIPs/issues/22 +/// @author Amir Bandeali - , Will Warren - +contract TokenRegistry is Ownable { + + event LogAddToken( + address indexed token, + string name, + string symbol, + uint8 decimals, + bytes ipfsHash, + bytes swarmHash + ); + + event LogRemoveToken( + address indexed token, + string name, + string symbol, + uint8 decimals, + bytes ipfsHash, + bytes swarmHash + ); + + event LogTokenNameChange(address indexed token, string oldName, string newName); + event LogTokenSymbolChange(address indexed token, string oldSymbol, string newSymbol); + event LogTokenIpfsHashChange(address indexed token, bytes oldIpfsHash, bytes newIpfsHash); + event LogTokenSwarmHashChange(address indexed token, bytes oldSwarmHash, bytes newSwarmHash); + + mapping (address => TokenMetadata) public tokens; + mapping (string => address) tokenBySymbol; + mapping (string => address) tokenByName; + + address[] public tokenAddresses; + + struct TokenMetadata { + address token; + string name; + string symbol; + uint8 decimals; + bytes ipfsHash; + bytes swarmHash; + } + + modifier tokenExists(address _token) { + require(tokens[_token].token != address(0)); + _; + } + + modifier tokenDoesNotExist(address _token) { + require(tokens[_token].token == address(0)); + _; + } + + modifier nameDoesNotExist(string _name) { + require(tokenByName[_name] == address(0)); + _; + } + + modifier symbolDoesNotExist(string _symbol) { + require(tokenBySymbol[_symbol] == address(0)); + _; + } + + modifier addressNotNull(address _address) { + require(_address != address(0)); + _; + } + + + /// @dev Allows owner to add a new token to the registry. + /// @param _token Address of new token. + /// @param _name Name of new token. + /// @param _symbol Symbol for new token. + /// @param _decimals Number of decimals, divisibility of new token. + /// @param _ipfsHash IPFS hash of token icon. + /// @param _swarmHash Swarm hash of token icon. + function addToken( + address _token, + string _name, + string _symbol, + uint8 _decimals, + bytes _ipfsHash, + bytes _swarmHash) + public + onlyOwner + tokenDoesNotExist(_token) + addressNotNull(_token) + symbolDoesNotExist(_symbol) + nameDoesNotExist(_name) + { + tokens[_token] = TokenMetadata({ + token: _token, + name: _name, + symbol: _symbol, + decimals: _decimals, + ipfsHash: _ipfsHash, + swarmHash: _swarmHash + }); + tokenAddresses.push(_token); + tokenBySymbol[_symbol] = _token; + tokenByName[_name] = _token; + LogAddToken( + _token, + _name, + _symbol, + _decimals, + _ipfsHash, + _swarmHash + ); + } + + /// @dev Allows owner to remove an existing token from the registry. + /// @param _token Address of existing token. + function removeToken(address _token, uint _index) + public + onlyOwner + tokenExists(_token) + { + require(tokenAddresses[_index] == _token); + + tokenAddresses[_index] = tokenAddresses[tokenAddresses.length - 1]; + tokenAddresses.length -= 1; + + TokenMetadata storage token = tokens[_token]; + LogRemoveToken( + token.token, + token.name, + token.symbol, + token.decimals, + token.ipfsHash, + token.swarmHash + ); + delete tokenBySymbol[token.symbol]; + delete tokenByName[token.name]; + delete tokens[_token]; + } + + /// @dev Allows owner to modify an existing token's name. + /// @param _token Address of existing token. + /// @param _name New name. + function setTokenName(address _token, string _name) + public + onlyOwner + tokenExists(_token) + nameDoesNotExist(_name) + { + TokenMetadata storage token = tokens[_token]; + LogTokenNameChange(_token, token.name, _name); + delete tokenByName[token.name]; + tokenByName[_name] = _token; + token.name = _name; + } + + /// @dev Allows owner to modify an existing token's symbol. + /// @param _token Address of existing token. + /// @param _symbol New symbol. + function setTokenSymbol(address _token, string _symbol) + public + onlyOwner + tokenExists(_token) + symbolDoesNotExist(_symbol) + { + TokenMetadata storage token = tokens[_token]; + LogTokenSymbolChange(_token, token.symbol, _symbol); + delete tokenBySymbol[token.symbol]; + tokenBySymbol[_symbol] = _token; + token.symbol = _symbol; + } + + /// @dev Allows owner to modify an existing token's IPFS hash. + /// @param _token Address of existing token. + /// @param _ipfsHash New IPFS hash. + function setTokenIpfsHash(address _token, bytes _ipfsHash) + public + onlyOwner + tokenExists(_token) + { + TokenMetadata storage token = tokens[_token]; + LogTokenIpfsHashChange(_token, token.ipfsHash, _ipfsHash); + token.ipfsHash = _ipfsHash; + } + + /// @dev Allows owner to modify an existing token's Swarm hash. + /// @param _token Address of existing token. + /// @param _swarmHash New Swarm hash. + function setTokenSwarmHash(address _token, bytes _swarmHash) + public + onlyOwner + tokenExists(_token) + { + TokenMetadata storage token = tokens[_token]; + LogTokenSwarmHashChange(_token, token.swarmHash, _swarmHash); + token.swarmHash = _swarmHash; + } + + /* + * Web3 call functions + */ + + /// @dev Provides a registered token's address when given the token symbol. + /// @param _symbol Symbol of registered token. + /// @return Token's address. + function getTokenAddressBySymbol(string _symbol) constant returns (address) { + return tokenBySymbol[_symbol]; + } + + /// @dev Provides a registered token's address when given the token name. + /// @param _name Name of registered token. + /// @return Token's address. + function getTokenAddressByName(string _name) constant returns (address) { + return tokenByName[_name]; + } + + /// @dev Provides a registered token's metadata, looked up by address. + /// @param _token Address of registered token. + /// @return Token metadata. + function getTokenMetaData(address _token) + public + constant + returns ( + address, //tokenAddress + string, //name + string, //symbol + uint8, //decimals + bytes, //ipfsHash + bytes //swarmHash + ) + { + TokenMetadata memory token = tokens[_token]; + return ( + token.token, + token.name, + token.symbol, + token.decimals, + token.ipfsHash, + token.swarmHash + ); + } + + /// @dev Provides a registered token's metadata, looked up by name. + /// @param _name Name of registered token. + /// @return Token metadata. + function getTokenByName(string _name) + public + constant + returns ( + address, //tokenAddress + string, //name + string, //symbol + uint8, //decimals + bytes, //ipfsHash + bytes //swarmHash + ) + { + address _token = tokenByName[_name]; + return getTokenMetaData(_token); + } + + /// @dev Provides a registered token's metadata, looked up by symbol. + /// @param _symbol Symbol of registered token. + /// @return Token metadata. + function getTokenBySymbol(string _symbol) + public + constant + returns ( + address, //tokenAddress + string, //name + string, //symbol + uint8, //decimals + bytes, //ipfsHash + bytes //swarmHash + ) + { + address _token = tokenBySymbol[_symbol]; + return getTokenMetaData(_token); + } + + /// @dev Returns an array containing all token addresses. + /// @return Array of token addresses. + function getTokenAddresses() + public + constant + returns (address[]) + { + return tokenAddresses; + } +} diff --git a/packages/contracts/contracts/TokenTransferProxy.sol b/packages/contracts/contracts/TokenTransferProxy.sol deleted file mode 100644 index fd2358496..000000000 --- a/packages/contracts/contracts/TokenTransferProxy.sol +++ /dev/null @@ -1,116 +0,0 @@ -/* - - Copyright 2017 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity ^0.4.11; - -import "./tokens/Token.sol"; -import "./utils/Ownable.sol"; - -/// @title TokenTransferProxy - Transfers tokens on behalf of contracts that have been approved via decentralized governance. -/// @author Amir Bandeali - , Will Warren - -contract TokenTransferProxy is Ownable { - - /// @dev Only authorized addresses can invoke functions with this modifier. - modifier onlyAuthorized { - require(authorized[msg.sender]); - _; - } - - modifier targetAuthorized(address target) { - require(authorized[target]); - _; - } - - modifier targetNotAuthorized(address target) { - require(!authorized[target]); - _; - } - - mapping (address => bool) public authorized; - address[] public authorities; - - event LogAuthorizedAddressAdded(address indexed target, address indexed caller); - event LogAuthorizedAddressRemoved(address indexed target, address indexed caller); - - /* - * Public functions - */ - - /// @dev Authorizes an address. - /// @param target Address to authorize. - function addAuthorizedAddress(address target) - public - onlyOwner - targetNotAuthorized(target) - { - authorized[target] = true; - authorities.push(target); - LogAuthorizedAddressAdded(target, msg.sender); - } - - /// @dev Removes authorizion of an address. - /// @param target Address to remove authorization from. - function removeAuthorizedAddress(address target) - public - onlyOwner - targetAuthorized(target) - { - delete authorized[target]; - for (uint i = 0; i < authorities.length; i++) { - if (authorities[i] == target) { - authorities[i] = authorities[authorities.length - 1]; - authorities.length -= 1; - break; - } - } - LogAuthorizedAddressRemoved(target, msg.sender); - } - - /// @dev Calls into ERC20 Token contract, invoking transferFrom. - /// @param token Address of token to transfer. - /// @param from Address to transfer token from. - /// @param to Address to transfer token to. - /// @param value Amount of token to transfer. - /// @return Success of transfer. - function transferFrom( - address token, - address from, - address to, - uint value) - public - onlyAuthorized - returns (bool) - { - return Token(token).transferFrom(from, to, value); - } - - /* - * Public constant functions - */ - - /// @dev Gets all authorized addresses. - /// @return Array of authorized addresses. - function getAuthorizedAddresses() - public - constant - returns (address[]) - { - return authorities; - } -} - diff --git a/packages/contracts/contracts/TokenTransferProxy/TokenTransferProxy.sol b/packages/contracts/contracts/TokenTransferProxy/TokenTransferProxy.sol new file mode 100644 index 000000000..f3fdbbee8 --- /dev/null +++ b/packages/contracts/contracts/TokenTransferProxy/TokenTransferProxy.sol @@ -0,0 +1,115 @@ +/* + + Copyright 2017 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity ^0.4.11; + +import "../../contracts_old/Token/v1.sol"; +import "../../contracts_old/Ownable/v1.sol"; + +/// @title TokenTransferProxy - Transfers tokens on behalf of contracts that have been approved via decentralized governance. +/// @author Amir Bandeali - , Will Warren - +contract TokenTransferProxy is Ownable { + + /// @dev Only authorized addresses can invoke functions with this modifier. + modifier onlyAuthorized { + require(authorized[msg.sender]); + _; + } + + modifier targetAuthorized(address target) { + require(authorized[target]); + _; + } + + modifier targetNotAuthorized(address target) { + require(!authorized[target]); + _; + } + + mapping (address => bool) public authorized; + address[] public authorities; + + event LogAuthorizedAddressAdded(address indexed target, address indexed caller); + event LogAuthorizedAddressRemoved(address indexed target, address indexed caller); + + /* + * Public functions + */ + + /// @dev Authorizes an address. + /// @param target Address to authorize. + function addAuthorizedAddress(address target) + public + onlyOwner + targetNotAuthorized(target) + { + authorized[target] = true; + authorities.push(target); + LogAuthorizedAddressAdded(target, msg.sender); + } + + /// @dev Removes authorizion of an address. + /// @param target Address to remove authorization from. + function removeAuthorizedAddress(address target) + public + onlyOwner + targetAuthorized(target) + { + delete authorized[target]; + for (uint i = 0; i < authorities.length; i++) { + if (authorities[i] == target) { + authorities[i] = authorities[authorities.length - 1]; + authorities.length -= 1; + break; + } + } + LogAuthorizedAddressRemoved(target, msg.sender); + } + + /// @dev Calls into ERC20 Token contract, invoking transferFrom. + /// @param token Address of token to transfer. + /// @param from Address to transfer token from. + /// @param to Address to transfer token to. + /// @param value Amount of token to transfer. + /// @return Success of transfer. + function transferFrom( + address token, + address from, + address to, + uint value) + public + onlyAuthorized + returns (bool) + { + return Token(token).transferFrom(from, to, value); + } + + /* + * Public constant functions + */ + + /// @dev Gets all authorized addresses. + /// @return Array of authorized addresses. + function getAuthorizedAddresses() + public + constant + returns (address[]) + { + return authorities; + } +} diff --git a/packages/contracts/contracts/UnlimitedAllowanceToken/UnlimitedAllowanceToken.sol b/packages/contracts/contracts/UnlimitedAllowanceToken/UnlimitedAllowanceToken.sol new file mode 100644 index 000000000..52b80f8c8 --- /dev/null +++ b/packages/contracts/contracts/UnlimitedAllowanceToken/UnlimitedAllowanceToken.sol @@ -0,0 +1,46 @@ +/* + + Copyright 2017 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity 0.4.18; + +import "../ERC20Token/ERC20Token.sol"; + +contract UnlimitedAllowanceToken is ERC20Token { + + uint constant MAX_UINT = 2**256 - 1; + + /// @dev ERC20 transferFrom, modified such that an allowance of MAX_UINT represents an unlimited allowance. See https://github.com/ethereum/EIPs/issues/717 + /// @param _from Address to transfer from. + /// @param _to Address to transfer to. + /// @param _value Amount to transfer. + /// @return Success of transfer. + function transferFrom(address _from, address _to, uint _value) + public + returns (bool) + { + uint allowance = allowed[_from][msg.sender]; + require(balances[_from] >= _value && allowance >= _value && balances[_to] + _value >= balances[_to]); + balances[_to] += _value; + balances[_from] -= _value; + if (allowance < MAX_UINT) { + allowed[_from][msg.sender] -= _value; + } + Transfer(_from, _to, _value); + return true; + } +} diff --git a/packages/contracts/contracts/WETH9/WETH9.sol b/packages/contracts/contracts/WETH9/WETH9.sol new file mode 100644 index 000000000..733ca414b --- /dev/null +++ b/packages/contracts/contracts/WETH9/WETH9.sol @@ -0,0 +1,756 @@ +// Copyright (C) 2015, 2016, 2017 Dapphub + +// This program 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. + +// This program 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 this program. If not, see . + +pragma solidity ^0.4.18; + +contract WETH9 { + string public name = "Wrapped Ether"; + string public symbol = "WETH"; + uint8 public decimals = 18; + + event Approval(address indexed src, address indexed guy, uint wad); + event Transfer(address indexed src, address indexed dst, uint wad); + event Deposit(address indexed dst, uint wad); + event Withdrawal(address indexed src, uint wad); + + mapping (address => uint) public balanceOf; + mapping (address => mapping (address => uint)) public allowance; + + function() public payable { + deposit(); + } + function deposit() public payable { + balanceOf[msg.sender] += msg.value; + Deposit(msg.sender, msg.value); + } + function withdraw(uint wad) public { + require(balanceOf[msg.sender] >= wad); + balanceOf[msg.sender] -= wad; + msg.sender.transfer(wad); + Withdrawal(msg.sender, wad); + } + + function totalSupply() public view returns (uint) { + return this.balance; + } + + function approve(address guy, uint wad) public returns (bool) { + allowance[msg.sender][guy] = wad; + Approval(msg.sender, guy, wad); + return true; + } + + function transfer(address dst, uint wad) public returns (bool) { + return transferFrom(msg.sender, dst, wad); + } + + function transferFrom(address src, address dst, uint wad) + public + returns (bool) + { + require(balanceOf[src] >= wad); + + if (src != msg.sender && allowance[src][msg.sender] != uint(-1)) { + require(allowance[src][msg.sender] >= wad); + allowance[src][msg.sender] -= wad; + } + + balanceOf[src] -= wad; + balanceOf[dst] += wad; + + Transfer(src, dst, wad); + + return true; + } +} + + +/* + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. + +*/ diff --git a/packages/contracts/contracts/ZRXToken/ZRXToken.sol b/packages/contracts/contracts/ZRXToken/ZRXToken.sol new file mode 100644 index 000000000..876e58d05 --- /dev/null +++ b/packages/contracts/contracts/ZRXToken/ZRXToken.sol @@ -0,0 +1,33 @@ +/* + + Copyright 2017 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity ^0.4.11; + +import "../../contracts_old/UnlimitedAllowanceToken/v1.sol"; + +contract ZRXToken is UnlimitedAllowanceToken { + + uint8 constant public decimals = 18; + uint public totalSupply = 10**27; // 1 billion tokens, 18 decimal places + string constant public name = "0x Protocol Token"; + string constant public symbol = "ZRX"; + + function ZRXToken() { + balances[msg.sender] = totalSupply; + } +} diff --git a/packages/contracts/contracts/multisig/MultiSigWallet.sol b/packages/contracts/contracts/multisig/MultiSigWallet.sol deleted file mode 100644 index ae7ef06fd..000000000 --- a/packages/contracts/contracts/multisig/MultiSigWallet.sol +++ /dev/null @@ -1,366 +0,0 @@ -pragma solidity ^0.4.11; - -/// @title Multisignature wallet - Allows multiple parties to agree on transactions before execution. -/// @author Stefan George - -contract MultiSigWallet { - - uint constant public MAX_OWNER_COUNT = 50; - - event Confirmation(address indexed sender, uint indexed transactionId); - event Revocation(address indexed sender, uint indexed transactionId); - event Submission(uint indexed transactionId); - event Execution(uint indexed transactionId); - event ExecutionFailure(uint indexed transactionId); - event Deposit(address indexed sender, uint value); - event OwnerAddition(address indexed owner); - event OwnerRemoval(address indexed owner); - event RequirementChange(uint required); - - mapping (uint => Transaction) public transactions; - mapping (uint => mapping (address => bool)) public confirmations; - mapping (address => bool) public isOwner; - address[] public owners; - uint public required; - uint public transactionCount; - - struct Transaction { - address destination; - uint value; - bytes data; - bool executed; - } - - modifier onlyWallet() { - if (msg.sender != address(this)) - throw; - _; - } - - modifier ownerDoesNotExist(address owner) { - if (isOwner[owner]) - throw; - _; - } - - modifier ownerExists(address owner) { - if (!isOwner[owner]) - throw; - _; - } - - modifier transactionExists(uint transactionId) { - if (transactions[transactionId].destination == 0) - throw; - _; - } - - modifier confirmed(uint transactionId, address owner) { - if (!confirmations[transactionId][owner]) - throw; - _; - } - - modifier notConfirmed(uint transactionId, address owner) { - if (confirmations[transactionId][owner]) - throw; - _; - } - - modifier notExecuted(uint transactionId) { - if (transactions[transactionId].executed) - throw; - _; - } - - modifier notNull(address _address) { - if (_address == 0) - throw; - _; - } - - modifier validRequirement(uint ownerCount, uint _required) { - if ( ownerCount > MAX_OWNER_COUNT - || _required > ownerCount - || _required == 0 - || ownerCount == 0) - throw; - _; - } - - /// @dev Fallback function allows to deposit ether. - function() - payable - { - if (msg.value > 0) - Deposit(msg.sender, msg.value); - } - - /* - * Public functions - */ - /// @dev Contract constructor sets initial owners and required number of confirmations. - /// @param _owners List of initial owners. - /// @param _required Number of required confirmations. - function MultiSigWallet(address[] _owners, uint _required) - public - validRequirement(_owners.length, _required) - { - for (uint i=0; i<_owners.length; i++) { - if (isOwner[_owners[i]] || _owners[i] == 0) - throw; - isOwner[_owners[i]] = true; - } - owners = _owners; - required = _required; - } - - /// @dev Allows to add a new owner. Transaction has to be sent by wallet. - /// @param owner Address of new owner. - function addOwner(address owner) - public - onlyWallet - ownerDoesNotExist(owner) - notNull(owner) - validRequirement(owners.length + 1, required) - { - isOwner[owner] = true; - owners.push(owner); - OwnerAddition(owner); - } - - /// @dev Allows to remove an owner. Transaction has to be sent by wallet. - /// @param owner Address of owner. - function removeOwner(address owner) - public - onlyWallet - ownerExists(owner) - { - isOwner[owner] = false; - for (uint i=0; i owners.length) - changeRequirement(owners.length); - OwnerRemoval(owner); - } - - /// @dev Allows to replace an owner with a new owner. Transaction has to be sent by wallet. - /// @param owner Address of owner to be replaced. - /// @param owner Address of new owner. - function replaceOwner(address owner, address newOwner) - public - onlyWallet - ownerExists(owner) - ownerDoesNotExist(newOwner) - { - for (uint i=0; i -contract MultiSigWalletWithTimeLock is MultiSigWallet { - - event ConfirmationTimeSet(uint indexed transactionId, uint confirmationTime); - event TimeLockChange(uint secondsTimeLocked); - - uint public secondsTimeLocked; - - mapping (uint => uint) public confirmationTimes; - - modifier notFullyConfirmed(uint transactionId) { - require(!isConfirmed(transactionId)); - _; - } - - modifier fullyConfirmed(uint transactionId) { - require(isConfirmed(transactionId)); - _; - } - - modifier pastTimeLock(uint transactionId) { - require(block.timestamp >= confirmationTimes[transactionId] + secondsTimeLocked); - _; - } - - /* - * Public functions - */ - - /// @dev Contract constructor sets initial owners, required number of confirmations, and time lock. - /// @param _owners List of initial owners. - /// @param _required Number of required confirmations. - /// @param _secondsTimeLocked Duration needed after a transaction is confirmed and before it becomes executable, in seconds. - function MultiSigWalletWithTimeLock(address[] _owners, uint _required, uint _secondsTimeLocked) - public - MultiSigWallet(_owners, _required) - { - secondsTimeLocked = _secondsTimeLocked; - } - - /// @dev Changes the duration of the time lock for transactions. - /// @param _secondsTimeLocked Duration needed after a transaction is confirmed and before it becomes executable, in seconds. - function changeTimeLock(uint _secondsTimeLocked) - public - onlyWallet - { - secondsTimeLocked = _secondsTimeLocked; - TimeLockChange(_secondsTimeLocked); - } - - /// @dev Allows an owner to confirm a transaction. - /// @param transactionId Transaction ID. - function confirmTransaction(uint transactionId) - public - ownerExists(msg.sender) - transactionExists(transactionId) - notConfirmed(transactionId, msg.sender) - notFullyConfirmed(transactionId) - { - confirmations[transactionId][msg.sender] = true; - Confirmation(msg.sender, transactionId); - if (isConfirmed(transactionId)) { - setConfirmationTime(transactionId, block.timestamp); - } - } - - /// @dev Allows an owner to revoke a confirmation for a transaction. - /// @param transactionId Transaction ID. - function revokeConfirmation(uint transactionId) - public - ownerExists(msg.sender) - confirmed(transactionId, msg.sender) - notExecuted(transactionId) - notFullyConfirmed(transactionId) - { - confirmations[transactionId][msg.sender] = false; - Revocation(msg.sender, transactionId); - } - - /// @dev Allows anyone to execute a confirmed transaction. - /// @param transactionId Transaction ID. - function executeTransaction(uint transactionId) - public - notExecuted(transactionId) - fullyConfirmed(transactionId) - pastTimeLock(transactionId) - { - Transaction storage tx = transactions[transactionId]; - tx.executed = true; - if (tx.destination.call.value(tx.value)(tx.data)) - Execution(transactionId); - else { - ExecutionFailure(transactionId); - tx.executed = false; - } - } - - /* - * Internal functions - */ - - /// @dev Sets the time of when a submission first passed. - function setConfirmationTime(uint transactionId, uint confirmationTime) - internal - { - confirmationTimes[transactionId] = confirmationTime; - ConfirmationTimeSet(transactionId, confirmationTime); - } -} - diff --git a/packages/contracts/contracts/multisig/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.sol b/packages/contracts/contracts/multisig/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.sol deleted file mode 100644 index 07beb9f5b..000000000 --- a/packages/contracts/contracts/multisig/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.sol +++ /dev/null @@ -1,83 +0,0 @@ -/* - - Copyright 2017 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity ^0.4.11; - -import "./MultiSigWalletWithTimeLock.sol"; - -contract MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress is MultiSigWalletWithTimeLock { - - address public TOKEN_TRANSFER_PROXY_CONTRACT; - - modifier validRemoveAuthorizedAddressTx(uint transactionId) { - Transaction storage tx = transactions[transactionId]; - require(tx.destination == TOKEN_TRANSFER_PROXY_CONTRACT); - require(isFunctionRemoveAuthorizedAddress(tx.data)); - _; - } - - /// @dev Contract constructor sets initial owners, required number of confirmations, time lock, and tokenTransferProxy address. - /// @param _owners List of initial owners. - /// @param _required Number of required confirmations. - /// @param _secondsTimeLocked Duration needed after a transaction is confirmed and before it becomes executable, in seconds. - /// @param _tokenTransferProxy Address of TokenTransferProxy contract. - function MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress( - address[] _owners, - uint _required, - uint _secondsTimeLocked, - address _tokenTransferProxy) - public - MultiSigWalletWithTimeLock(_owners, _required, _secondsTimeLocked) - { - TOKEN_TRANSFER_PROXY_CONTRACT = _tokenTransferProxy; - } - - /// @dev Allows execution of removeAuthorizedAddress without time lock. - /// @param transactionId Transaction ID. - function executeRemoveAuthorizedAddress(uint transactionId) - public - notExecuted(transactionId) - fullyConfirmed(transactionId) - validRemoveAuthorizedAddressTx(transactionId) - { - Transaction storage tx = transactions[transactionId]; - tx.executed = true; - if (tx.destination.call.value(tx.value)(tx.data)) - Execution(transactionId); - else { - ExecutionFailure(transactionId); - tx.executed = false; - } - } - - /// @dev Compares first 4 bytes of byte array to removeAuthorizedAddress function signature. - /// @param data Transaction data. - /// @return Successful if data is a call to removeAuthorizedAddress. - function isFunctionRemoveAuthorizedAddress(bytes data) - public - constant - returns (bool) - { - bytes4 removeAuthorizedAddressSignature = bytes4(sha3("removeAuthorizedAddress(address)")); - for (uint i = 0; i < 4; i++) { - require(data[i] == removeAuthorizedAddressSignature[i]); - } - return true; - } -} - diff --git a/packages/contracts/contracts/test/DummyToken.sol b/packages/contracts/contracts/test/DummyToken.sol deleted file mode 100644 index 046af3059..000000000 --- a/packages/contracts/contracts/test/DummyToken.sol +++ /dev/null @@ -1,36 +0,0 @@ -pragma solidity ^0.4.11; - -import "./Mintable.sol"; -import "./../utils/Ownable.sol"; - -contract DummyToken is Mintable, Ownable { - string public name; - string public symbol; - uint public decimals; - - function DummyToken( - string _name, - string _symbol, - uint _decimals, - uint _totalSupply) - { - name = _name; - symbol = _symbol; - decimals = _decimals; - totalSupply = _totalSupply; - balances[msg.sender] = _totalSupply; - } - - function setBalance(address _target, uint _value) - onlyOwner - { - uint currBalance = balanceOf(_target); - if (_value < currBalance) { - totalSupply = safeSub(totalSupply, safeSub(currBalance, _value)); - } else { - totalSupply = safeAdd(totalSupply, safeSub(_value, currBalance)); - } - balances[_target] = _value; - } -} - diff --git a/packages/contracts/contracts/test/DummyToken_v2.sol b/packages/contracts/contracts/test/DummyToken_v2.sol deleted file mode 100644 index bd4d06be9..000000000 --- a/packages/contracts/contracts/test/DummyToken_v2.sol +++ /dev/null @@ -1,38 +0,0 @@ -pragma solidity 0.4.18; - -import "./Mintable_v2.sol"; -import "./../utils/Ownable_v2.sol"; - -contract DummyToken_v2 is Mintable_v2, Ownable_v2 { - string public name; - string public symbol; - uint public decimals; - - function DummyToken_v2( - string _name, - string _symbol, - uint _decimals, - uint _totalSupply) - public - { - name = _name; - symbol = _symbol; - decimals = _decimals; - totalSupply = _totalSupply; - balances[msg.sender] = _totalSupply; - } - - function setBalance(address _target, uint _value) - public - onlyOwner - { - uint currBalance = balanceOf(_target); - if (_value < currBalance) { - totalSupply = safeSub(totalSupply, safeSub(currBalance, _value)); - } else { - totalSupply = safeAdd(totalSupply, safeSub(_value, currBalance)); - } - balances[_target] = _value; - } -} - diff --git a/packages/contracts/contracts/test/MaliciousToken.sol b/packages/contracts/contracts/test/MaliciousToken.sol deleted file mode 100644 index 3e7d5d1a5..000000000 --- a/packages/contracts/contracts/test/MaliciousToken.sol +++ /dev/null @@ -1,32 +0,0 @@ -pragma solidity ^0.4.11; - -import "./../tokens/StandardToken.sol"; - -contract MaliciousToken is StandardToken { - uint8 stateToUpdate = 1; // Not null so that change only requires 5000 gas - - function updateState() - internal - { - stateToUpdate++; - } - - function balanceOf(address _owner) - public - constant - returns (uint) - { - updateState(); - return balances[_owner]; - } - - function allowance(address _owner, address _spender) - public - constant - returns (uint) - { - updateState(); - return allowed[_owner][_spender]; - } -} - diff --git a/packages/contracts/contracts/test/Mintable.sol b/packages/contracts/contracts/test/Mintable.sol deleted file mode 100644 index 3b91415ef..000000000 --- a/packages/contracts/contracts/test/Mintable.sol +++ /dev/null @@ -1,19 +0,0 @@ -pragma solidity ^0.4.11; - -import "./../tokens/UnlimitedAllowanceToken.sol"; -import "./../utils/SafeMath.sol"; - -/* - * Mintable - * Base contract that creates a mintable UnlimitedAllowanceToken - */ -contract Mintable is UnlimitedAllowanceToken, SafeMath { - function mint(uint _value) - public - { - require(_value <= 100000000000000000000); - balances[msg.sender] = safeAdd(_value, balances[msg.sender]); - totalSupply = safeAdd(totalSupply, _value); - } -} - diff --git a/packages/contracts/contracts/test/Mintable_v2.sol b/packages/contracts/contracts/test/Mintable_v2.sol deleted file mode 100644 index 829145cfb..000000000 --- a/packages/contracts/contracts/test/Mintable_v2.sol +++ /dev/null @@ -1,19 +0,0 @@ -pragma solidity 0.4.18; - -import "./../tokens/UnlimitedAllowanceToken_v2.sol"; -import "./../utils/SafeMath_v2.sol"; - -/* - * Mintable - * Base contract that creates a mintable UnlimitedAllowanceToken - */ -contract Mintable_v2 is UnlimitedAllowanceToken_v2, SafeMath_v2 { - function mint(uint _value) - public - { - require(_value <= 100000000000000000000); - balances[msg.sender] = safeAdd(_value, balances[msg.sender]); - totalSupply = safeAdd(totalSupply, _value); - } -} - diff --git a/packages/contracts/contracts/tokens/ERC20Token.sol b/packages/contracts/contracts/tokens/ERC20Token.sol deleted file mode 100644 index 318da8c01..000000000 --- a/packages/contracts/contracts/tokens/ERC20Token.sol +++ /dev/null @@ -1,59 +0,0 @@ -pragma solidity 0.4.18; - -import "./Token_v2.sol"; - -contract ERC20Token is Token_v2 { - - function transfer(address _to, uint _value) - public - returns (bool) - { - require(balances[msg.sender] >= _value && balances[_to] + _value >= balances[_to]); - balances[msg.sender] -= _value; - balances[_to] += _value; - Transfer(msg.sender, _to, _value); - return true; - } - - function transferFrom(address _from, address _to, uint _value) - public - returns (bool) - { - require(balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value >= balances[_to]); - balances[_to] += _value; - balances[_from] -= _value; - allowed[_from][msg.sender] -= _value; - Transfer(_from, _to, _value); - return true; - } - - function approve(address _spender, uint _value) - public - returns (bool) - { - allowed[msg.sender][_spender] = _value; - Approval(msg.sender, _spender, _value); - return true; - } - - function balanceOf(address _owner) - public - view - returns (uint) - { - return balances[_owner]; - } - - function allowance(address _owner, address _spender) - public - view - returns (uint) - { - return allowed[_owner][_spender]; - } - - mapping (address => uint) balances; - mapping (address => mapping (address => uint)) allowed; - uint public totalSupply; -} - diff --git a/packages/contracts/contracts/tokens/StandardToken.sol b/packages/contracts/contracts/tokens/StandardToken.sol deleted file mode 100644 index 9cd53d94a..000000000 --- a/packages/contracts/contracts/tokens/StandardToken.sol +++ /dev/null @@ -1,45 +0,0 @@ -pragma solidity ^0.4.11; - -import "./Token.sol"; - -contract StandardToken is Token { - - function transfer(address _to, uint _value) returns (bool) { - //Default assumes totalSupply can't be over max (2^256 - 1). - if (balances[msg.sender] >= _value && balances[_to] + _value >= balances[_to]) { - balances[msg.sender] -= _value; - balances[_to] += _value; - Transfer(msg.sender, _to, _value); - return true; - } else { return false; } - } - - function transferFrom(address _from, address _to, uint _value) returns (bool) { - if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value >= balances[_to]) { - balances[_to] += _value; - balances[_from] -= _value; - allowed[_from][msg.sender] -= _value; - Transfer(_from, _to, _value); - return true; - } else { return false; } - } - - function balanceOf(address _owner) constant returns (uint) { - return balances[_owner]; - } - - function approve(address _spender, uint _value) returns (bool) { - allowed[msg.sender][_spender] = _value; - Approval(msg.sender, _spender, _value); - return true; - } - - function allowance(address _owner, address _spender) constant returns (uint) { - return allowed[_owner][_spender]; - } - - mapping (address => uint) balances; - mapping (address => mapping (address => uint)) allowed; - uint public totalSupply; -} - diff --git a/packages/contracts/contracts/tokens/Token.sol b/packages/contracts/contracts/tokens/Token.sol deleted file mode 100644 index 507de9b12..000000000 --- a/packages/contracts/contracts/tokens/Token.sol +++ /dev/null @@ -1,39 +0,0 @@ -pragma solidity ^0.4.11; - -contract Token { - - /// @return total amount of tokens - function totalSupply() constant returns (uint supply) {} - - /// @param _owner The address from which the balance will be retrieved - /// @return The balance - function balanceOf(address _owner) constant returns (uint balance) {} - - /// @notice send `_value` token to `_to` from `msg.sender` - /// @param _to The address of the recipient - /// @param _value The amount of token to be transferred - /// @return Whether the transfer was successful or not - function transfer(address _to, uint _value) returns (bool success) {} - - /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from` - /// @param _from The address of the sender - /// @param _to The address of the recipient - /// @param _value The amount of token to be transferred - /// @return Whether the transfer was successful or not - function transferFrom(address _from, address _to, uint _value) returns (bool success) {} - - /// @notice `msg.sender` approves `_addr` to spend `_value` tokens - /// @param _spender The address of the account able to transfer the tokens - /// @param _value The amount of wei to be approved for transfer - /// @return Whether the approval was successful or not - function approve(address _spender, uint _value) returns (bool success) {} - - /// @param _owner The address of the account owning tokens - /// @param _spender The address of the account able to transfer the tokens - /// @return Amount of remaining tokens allowed to spent - function allowance(address _owner, address _spender) constant returns (uint remaining) {} - - event Transfer(address indexed _from, address indexed _to, uint _value); - event Approval(address indexed _owner, address indexed _spender, uint _value); -} - diff --git a/packages/contracts/contracts/tokens/Token_v2.sol b/packages/contracts/contracts/tokens/Token_v2.sol deleted file mode 100644 index e1088c560..000000000 --- a/packages/contracts/contracts/tokens/Token_v2.sol +++ /dev/null @@ -1,36 +0,0 @@ -pragma solidity 0.4.18; - -contract Token_v2 { - - /// @notice send `_value` token to `_to` from `msg.sender` - /// @param _to The address of the recipient - /// @param _value The amount of token to be transferred - /// @return Whether the transfer was successful or not - function transfer(address _to, uint _value) public returns (bool) {} - - /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from` - /// @param _from The address of the sender - /// @param _to The address of the recipient - /// @param _value The amount of token to be transferred - /// @return Whether the transfer was successful or not - function transferFrom(address _from, address _to, uint _value) public returns (bool) {} - - /// @notice `msg.sender` approves `_addr` to spend `_value` tokens - /// @param _spender The address of the account able to transfer the tokens - /// @param _value The amount of wei to be approved for transfer - /// @return Whether the approval was successful or not - function approve(address _spender, uint _value) public returns (bool) {} - - /// @param _owner The address from which the balance will be retrieved - /// @return The balance - function balanceOf(address _owner) public view returns (uint) {} - - /// @param _owner The address of the account owning tokens - /// @param _spender The address of the account able to transfer the tokens - /// @return Amount of remaining tokens allowed to spent - function allowance(address _owner, address _spender) public view returns (uint) {} - - event Transfer(address indexed _from, address indexed _to, uint _value); - event Approval(address indexed _owner, address indexed _spender, uint _value); -} - diff --git a/packages/contracts/contracts/tokens/UnlimitedAllowanceToken.sol b/packages/contracts/contracts/tokens/UnlimitedAllowanceToken.sol deleted file mode 100644 index 0994cfae4..000000000 --- a/packages/contracts/contracts/tokens/UnlimitedAllowanceToken.sol +++ /dev/null @@ -1,53 +0,0 @@ -/* - - Copyright 2017 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity ^0.4.11; - -import "./StandardToken.sol"; - -contract UnlimitedAllowanceToken is StandardToken { - - uint constant MAX_UINT = 2**256 - 1; - - /// @dev ERC20 transferFrom, modified such that an allowance of MAX_UINT represents an unlimited allowance. - /// @param _from Address to transfer from. - /// @param _to Address to transfer to. - /// @param _value Amount to transfer. - /// @return Success of transfer. - function transferFrom(address _from, address _to, uint _value) - public - returns (bool) - { - uint allowance = allowed[_from][msg.sender]; - if (balances[_from] >= _value - && allowance >= _value - && balances[_to] + _value >= balances[_to] - ) { - balances[_to] += _value; - balances[_from] -= _value; - if (allowance < MAX_UINT) { - allowed[_from][msg.sender] -= _value; - } - Transfer(_from, _to, _value); - return true; - } else { - return false; - } - } -} - diff --git a/packages/contracts/contracts/tokens/UnlimitedAllowanceToken_v2.sol b/packages/contracts/contracts/tokens/UnlimitedAllowanceToken_v2.sol deleted file mode 100644 index b2caab8af..000000000 --- a/packages/contracts/contracts/tokens/UnlimitedAllowanceToken_v2.sol +++ /dev/null @@ -1,47 +0,0 @@ -/* - - Copyright 2017 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity 0.4.18; - -import "./ERC20Token.sol"; - -contract UnlimitedAllowanceToken_v2 is ERC20Token { - - uint constant MAX_UINT = 2**256 - 1; - - /// @dev ERC20 transferFrom, modified such that an allowance of MAX_UINT represents an unlimited allowance. See https://github.com/ethereum/EIPs/issues/717 - /// @param _from Address to transfer from. - /// @param _to Address to transfer to. - /// @param _value Amount to transfer. - /// @return Success of transfer. - function transferFrom(address _from, address _to, uint _value) - public - returns (bool) - { - uint allowance = allowed[_from][msg.sender]; - require(balances[_from] >= _value && allowance >= _value && balances[_to] + _value >= balances[_to]); - balances[_to] += _value; - balances[_from] -= _value; - if (allowance < MAX_UINT) { - allowed[_from][msg.sender] -= _value; - } - Transfer(_from, _to, _value); - return true; - } -} - diff --git a/packages/contracts/contracts/tokens/WETH9.sol b/packages/contracts/contracts/tokens/WETH9.sol deleted file mode 100644 index 733ca414b..000000000 --- a/packages/contracts/contracts/tokens/WETH9.sol +++ /dev/null @@ -1,756 +0,0 @@ -// Copyright (C) 2015, 2016, 2017 Dapphub - -// This program 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. - -// This program 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 this program. If not, see . - -pragma solidity ^0.4.18; - -contract WETH9 { - string public name = "Wrapped Ether"; - string public symbol = "WETH"; - uint8 public decimals = 18; - - event Approval(address indexed src, address indexed guy, uint wad); - event Transfer(address indexed src, address indexed dst, uint wad); - event Deposit(address indexed dst, uint wad); - event Withdrawal(address indexed src, uint wad); - - mapping (address => uint) public balanceOf; - mapping (address => mapping (address => uint)) public allowance; - - function() public payable { - deposit(); - } - function deposit() public payable { - balanceOf[msg.sender] += msg.value; - Deposit(msg.sender, msg.value); - } - function withdraw(uint wad) public { - require(balanceOf[msg.sender] >= wad); - balanceOf[msg.sender] -= wad; - msg.sender.transfer(wad); - Withdrawal(msg.sender, wad); - } - - function totalSupply() public view returns (uint) { - return this.balance; - } - - function approve(address guy, uint wad) public returns (bool) { - allowance[msg.sender][guy] = wad; - Approval(msg.sender, guy, wad); - return true; - } - - function transfer(address dst, uint wad) public returns (bool) { - return transferFrom(msg.sender, dst, wad); - } - - function transferFrom(address src, address dst, uint wad) - public - returns (bool) - { - require(balanceOf[src] >= wad); - - if (src != msg.sender && allowance[src][msg.sender] != uint(-1)) { - require(allowance[src][msg.sender] >= wad); - allowance[src][msg.sender] -= wad; - } - - balanceOf[src] -= wad; - balanceOf[dst] += wad; - - Transfer(src, dst, wad); - - return true; - } -} - - -/* - GNU GENERAL PUBLIC LICENSE - Version 3, 29 June 2007 - - Copyright (C) 2007 Free Software Foundation, Inc. - Everyone is permitted to copy and distribute verbatim copies - of this license document, but changing it is not allowed. - - Preamble - - The GNU General Public License is a free, copyleft license for -software and other kinds of works. - - The licenses for most software and other practical works are designed -to take away your freedom to share and change the works. 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If your program is a subroutine library, you -may consider it more useful to permit linking proprietary applications with -the library. If this is what you want to do, use the GNU Lesser General -Public License instead of this License. But first, please read -. - -*/ diff --git a/packages/contracts/contracts/tokens/ZRXToken.sol b/packages/contracts/contracts/tokens/ZRXToken.sol deleted file mode 100644 index af1dfac99..000000000 --- a/packages/contracts/contracts/tokens/ZRXToken.sol +++ /dev/null @@ -1,34 +0,0 @@ -/* - - Copyright 2017 ZeroEx Intl. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - -*/ - -pragma solidity ^0.4.11; - -import "./UnlimitedAllowanceToken.sol"; - -contract ZRXToken is UnlimitedAllowanceToken { - - uint8 constant public decimals = 18; - uint public totalSupply = 10**27; // 1 billion tokens, 18 decimal places - string constant public name = "0x Protocol Token"; - string constant public symbol = "ZRX"; - - function ZRXToken() { - balances[msg.sender] = totalSupply; - } -} - diff --git a/packages/contracts/contracts/utils/Ownable.sol b/packages/contracts/contracts/utils/Ownable.sol deleted file mode 100644 index 77fdaf085..000000000 --- a/packages/contracts/contracts/utils/Ownable.sol +++ /dev/null @@ -1,28 +0,0 @@ -pragma solidity ^0.4.11; - -/* - * Ownable - * - * Base contract with an owner. - * Provides onlyOwner modifier, which prevents function from running if it is called by anyone other than the owner. - */ - -contract Ownable { - address public owner; - - function Ownable() { - owner = msg.sender; - } - - modifier onlyOwner() { - require(msg.sender == owner); - _; - } - - function transferOwnership(address newOwner) onlyOwner { - if (newOwner != address(0)) { - owner = newOwner; - } - } -} - diff --git a/packages/contracts/contracts/utils/Ownable_v2.sol b/packages/contracts/contracts/utils/Ownable_v2.sol deleted file mode 100644 index 77e1fed08..000000000 --- a/packages/contracts/contracts/utils/Ownable_v2.sol +++ /dev/null @@ -1,33 +0,0 @@ -pragma solidity 0.4.18; - -/* - * Ownable - * - * Base contract with an owner. - * Provides onlyOwner modifier, which prevents function from running if it is called by anyone other than the owner. - */ - -contract Ownable_v2 { - address public owner; - - function Ownable_v2() - public - { - owner = msg.sender; - } - - modifier onlyOwner() { - require(msg.sender == owner); - _; - } - - function transferOwnership(address newOwner) - public - onlyOwner - { - if (newOwner != address(0)) { - owner = newOwner; - } - } -} - diff --git a/packages/contracts/contracts/utils/SafeMath.sol b/packages/contracts/contracts/utils/SafeMath.sol deleted file mode 100644 index a7891a7af..000000000 --- a/packages/contracts/contracts/utils/SafeMath.sol +++ /dev/null @@ -1,74 +0,0 @@ -pragma solidity ^0.4.11; - -contract SafeMath { - function safeMul(uint a, uint b) - internal - constant - returns (uint256) - { - uint c = a * b; - assert(a == 0 || c / a == b); - return c; - } - - function safeDiv(uint a, uint b) - internal - constant - returns (uint256) - { - uint c = a / b; - return c; - } - - function safeSub(uint a, uint b) - internal - constant - returns (uint256) - { - assert(b <= a); - return a - b; - } - - function safeAdd(uint a, uint b) - internal - constant - returns (uint256) - { - uint c = a + b; - assert(c >= a); - return c; - } - - function max64(uint64 a, uint64 b) - internal - constant - returns (uint64) - { - return a >= b ? a : b; - } - - function min64(uint64 a, uint64 b) - internal - constant - returns (uint64) - { - return a < b ? a : b; - } - - function max256(uint256 a, uint256 b) - internal - constant - returns (uint256) - { - return a >= b ? a : b; - } - - function min256(uint256 a, uint256 b) - internal - constant - returns (uint256) - { - return a < b ? a : b; - } -} - diff --git a/packages/contracts/contracts/utils/SafeMath_v2.sol b/packages/contracts/contracts/utils/SafeMath_v2.sol deleted file mode 100644 index 6eda03999..000000000 --- a/packages/contracts/contracts/utils/SafeMath_v2.sol +++ /dev/null @@ -1,74 +0,0 @@ -pragma solidity 0.4.18; - -contract SafeMath_v2 { - function safeMul(uint a, uint b) - internal - pure - returns (uint256) - { - uint c = a * b; - assert(a == 0 || c / a == b); - return c; - } - - function safeDiv(uint a, uint b) - internal - pure - returns (uint256) - { - uint c = a / b; - return c; - } - - function safeSub(uint a, uint b) - internal - pure - returns (uint256) - { - assert(b <= a); - return a - b; - } - - function safeAdd(uint a, uint b) - internal - pure - returns (uint256) - { - uint c = a + b; - assert(c >= a); - return c; - } - - function max64(uint64 a, uint64 b) - internal - pure - returns (uint256) - { - return a >= b ? a : b; - } - - function min64(uint64 a, uint64 b) - internal - pure - returns (uint256) - { - return a < b ? a : b; - } - - function max256(uint256 a, uint256 b) - internal - pure - returns (uint256) - { - return a >= b ? a : b; - } - - function min256(uint256 a, uint256 b) - internal - pure - returns (uint256) - { - return a < b ? a : b; - } -} - diff --git a/packages/contracts/contracts_old/Ownable/v1.sol b/packages/contracts/contracts_old/Ownable/v1.sol new file mode 100644 index 000000000..5488896d7 --- /dev/null +++ b/packages/contracts/contracts_old/Ownable/v1.sol @@ -0,0 +1,27 @@ +pragma solidity ^0.4.11; + +/* + * Ownable + * + * Base contract with an owner. + * Provides onlyOwner modifier, which prevents function from running if it is called by anyone other than the owner. + */ + +contract Ownable { + address public owner; + + function Ownable() { + owner = msg.sender; + } + + modifier onlyOwner() { + require(msg.sender == owner); + _; + } + + function transferOwnership(address newOwner) onlyOwner { + if (newOwner != address(0)) { + owner = newOwner; + } + } +} diff --git a/packages/contracts/contracts_old/SafeMath/v1.sol b/packages/contracts/contracts_old/SafeMath/v1.sol new file mode 100644 index 000000000..e35c0dc81 --- /dev/null +++ b/packages/contracts/contracts_old/SafeMath/v1.sol @@ -0,0 +1,73 @@ +pragma solidity ^0.4.11; + +contract SafeMath { + function safeMul(uint a, uint b) + internal + constant + returns (uint256) + { + uint c = a * b; + assert(a == 0 || c / a == b); + return c; + } + + function safeDiv(uint a, uint b) + internal + constant + returns (uint256) + { + uint c = a / b; + return c; + } + + function safeSub(uint a, uint b) + internal + constant + returns (uint256) + { + assert(b <= a); + return a - b; + } + + function safeAdd(uint a, uint b) + internal + constant + returns (uint256) + { + uint c = a + b; + assert(c >= a); + return c; + } + + function max64(uint64 a, uint64 b) + internal + constant + returns (uint64) + { + return a >= b ? a : b; + } + + function min64(uint64 a, uint64 b) + internal + constant + returns (uint64) + { + return a < b ? a : b; + } + + function max256(uint256 a, uint256 b) + internal + constant + returns (uint256) + { + return a >= b ? a : b; + } + + function min256(uint256 a, uint256 b) + internal + constant + returns (uint256) + { + return a < b ? a : b; + } +} diff --git a/packages/contracts/contracts_old/Token/v1.sol b/packages/contracts/contracts_old/Token/v1.sol new file mode 100644 index 000000000..507de9b12 --- /dev/null +++ b/packages/contracts/contracts_old/Token/v1.sol @@ -0,0 +1,39 @@ +pragma solidity ^0.4.11; + +contract Token { + + /// @return total amount of tokens + function totalSupply() constant returns (uint supply) {} + + /// @param _owner The address from which the balance will be retrieved + /// @return The balance + function balanceOf(address _owner) constant returns (uint balance) {} + + /// @notice send `_value` token to `_to` from `msg.sender` + /// @param _to The address of the recipient + /// @param _value The amount of token to be transferred + /// @return Whether the transfer was successful or not + function transfer(address _to, uint _value) returns (bool success) {} + + /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from` + /// @param _from The address of the sender + /// @param _to The address of the recipient + /// @param _value The amount of token to be transferred + /// @return Whether the transfer was successful or not + function transferFrom(address _from, address _to, uint _value) returns (bool success) {} + + /// @notice `msg.sender` approves `_addr` to spend `_value` tokens + /// @param _spender The address of the account able to transfer the tokens + /// @param _value The amount of wei to be approved for transfer + /// @return Whether the approval was successful or not + function approve(address _spender, uint _value) returns (bool success) {} + + /// @param _owner The address of the account owning tokens + /// @param _spender The address of the account able to transfer the tokens + /// @return Amount of remaining tokens allowed to spent + function allowance(address _owner, address _spender) constant returns (uint remaining) {} + + event Transfer(address indexed _from, address indexed _to, uint _value); + event Approval(address indexed _owner, address indexed _spender, uint _value); +} + diff --git a/packages/contracts/contracts_old/UnlimitedAllowanceToken/v1.sol b/packages/contracts/contracts_old/UnlimitedAllowanceToken/v1.sol new file mode 100644 index 000000000..b7c285f06 --- /dev/null +++ b/packages/contracts/contracts_old/UnlimitedAllowanceToken/v1.sol @@ -0,0 +1,52 @@ +/* + + Copyright 2017 ZeroEx Intl. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +*/ + +pragma solidity ^0.4.11; + +import "../../packages/StandardToken/StandardToken.sol"; + +contract UnlimitedAllowanceToken is StandardToken { + + uint constant MAX_UINT = 2**256 - 1; + + /// @dev ERC20 transferFrom, modified such that an allowance of MAX_UINT represents an unlimited allowance. + /// @param _from Address to transfer from. + /// @param _to Address to transfer to. + /// @param _value Amount to transfer. + /// @return Success of transfer. + function transferFrom(address _from, address _to, uint _value) + public + returns (bool) + { + uint allowance = allowed[_from][msg.sender]; + if (balances[_from] >= _value + && allowance >= _value + && balances[_to] + _value >= balances[_to] + ) { + balances[_to] += _value; + balances[_from] -= _value; + if (allowance < MAX_UINT) { + allowed[_from][msg.sender] -= _value; + } + Transfer(_from, _to, _value); + return true; + } else { + return false; + } + } +} diff --git a/packages/contracts/test/unlimited_allowance_token.ts b/packages/contracts/test/unlimited_allowance_token.ts index 7f4fef987..34d2ba33b 100644 --- a/packages/contracts/test/unlimited_allowance_token.ts +++ b/packages/contracts/test/unlimited_allowance_token.ts @@ -44,6 +44,14 @@ describe('UnlimitedAllowanceToken', () => { await blockchainLifecycle.revertAsync(); }); describe('transfer', () => { + it('should throw if owner has insufficient balance', async () => { + const ownerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); + const amountToTransfer = ownerBalance.plus(1); + return expect(token.transfer.call(spender, amountToTransfer, { from: owner })).to.be.rejectedWith( + constants.REVERT, + ); + }); + it('should transfer balance from sender to receiver', async () => { const receiver = spender; const initOwnerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); @@ -67,15 +75,18 @@ describe('UnlimitedAllowanceToken', () => { }); describe('transferFrom', () => { - it('should return false if owner has insufficient balance', async () => { + it('should throw if owner has insufficient balance', async () => { const ownerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); const amountToTransfer = ownerBalance.plus(1); await zeroEx.token.setAllowanceAsync(tokenAddress, owner, spender, amountToTransfer); - const didReturnTrue = await token.transferFrom.call(owner, spender, amountToTransfer, { from: spender }); - expect(didReturnTrue).to.be.false(); + return expect( + token.transferFrom.call(owner, spender, amountToTransfer, { + from: spender, + }), + ).to.be.rejectedWith(constants.REVERT); }); - it('should return false if spender has insufficient allowance', async () => { + it('should throw if spender has insufficient allowance', async () => { const ownerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); const amountToTransfer = ownerBalance; @@ -83,8 +94,11 @@ describe('UnlimitedAllowanceToken', () => { const spenderAllowanceIsInsufficient = spenderAllowance.cmp(amountToTransfer) < 0; expect(spenderAllowanceIsInsufficient).to.be.true(); - const didReturnTrue = await token.transferFrom.call(owner, spender, amountToTransfer, { from: spender }); - expect(didReturnTrue).to.be.false(); + return expect( + token.transferFrom.call(owner, spender, amountToTransfer, { + from: spender, + }), + ).to.be.rejectedWith(constants.REVERT); }); it('should return true on a 0 value transfer', async () => { diff --git a/packages/contracts/test/unlimited_allowance_token_v2.ts b/packages/contracts/test/unlimited_allowance_token_v2.ts deleted file mode 100644 index 440cc11ac..000000000 --- a/packages/contracts/test/unlimited_allowance_token_v2.ts +++ /dev/null @@ -1,152 +0,0 @@ -import { ZeroEx } from '0x.js'; -import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-utils'; -import { BigNumber } from '@0xproject/utils'; -import { Web3Wrapper } from '@0xproject/web3-wrapper'; -import * as chai from 'chai'; -import * as Web3 from 'web3'; - -import { constants } from '../util/constants'; -import { ContractName } from '../util/types'; - -import { chaiSetup } from './utils/chai_setup'; -import { deployer } from './utils/deployer'; - -chaiSetup.configure(); -const expect = chai.expect; -const web3 = web3Factory.create(); -const web3Wrapper = new Web3Wrapper(web3.currentProvider); -const blockchainLifecycle = new BlockchainLifecycle(); - -describe('UnlimitedAllowanceTokenV2', () => { - const config = { - networkId: constants.TESTRPC_NETWORK_ID, - }; - const zeroEx = new ZeroEx(web3.currentProvider, config); - let owner: string; - let spender: string; - - const MAX_MINT_VALUE = new BigNumber(100000000000000000000); - let tokenAddress: string; - let token: Web3.ContractInstance; - - before(async () => { - const accounts = await web3Wrapper.getAvailableAddressesAsync(); - owner = accounts[0]; - spender = accounts[1]; - token = await deployer.deployAsync(ContractName.DummyToken_v2); - await token.mint(MAX_MINT_VALUE, { from: owner }); - tokenAddress = token.address; - }); - beforeEach(async () => { - await blockchainLifecycle.startAsync(); - }); - afterEach(async () => { - await blockchainLifecycle.revertAsync(); - }); - describe('transfer', () => { - it('should throw if owner has insufficient balance', async () => { - const ownerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); - const amountToTransfer = ownerBalance.plus(1); - return expect(token.transfer.call(spender, amountToTransfer, { from: owner })).to.be.rejectedWith( - constants.REVERT, - ); - }); - - it('should transfer balance from sender to receiver', async () => { - const receiver = spender; - const initOwnerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); - const amountToTransfer = new BigNumber(1); - await zeroEx.token.transferAsync(tokenAddress, owner, receiver, amountToTransfer); - const finalOwnerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); - const finalReceiverBalance = await zeroEx.token.getBalanceAsync(tokenAddress, receiver); - - const expectedFinalOwnerBalance = initOwnerBalance.minus(amountToTransfer); - const expectedFinalReceiverBalance = amountToTransfer; - expect(finalOwnerBalance).to.be.bignumber.equal(expectedFinalOwnerBalance); - expect(finalReceiverBalance).to.be.bignumber.equal(expectedFinalReceiverBalance); - }); - - it('should return true on a 0 value transfer', async () => { - const didReturnTrue = await token.transfer.call(spender, 0, { - from: owner, - }); - expect(didReturnTrue).to.be.true(); - }); - }); - - describe('transferFrom', () => { - it('should throw if owner has insufficient balance', async () => { - const ownerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); - const amountToTransfer = ownerBalance.plus(1); - await zeroEx.token.setAllowanceAsync(tokenAddress, owner, spender, amountToTransfer); - return expect( - token.transferFrom.call(owner, spender, amountToTransfer, { - from: spender, - }), - ).to.be.rejectedWith(constants.REVERT); - }); - - it('should throw if spender has insufficient allowance', async () => { - const ownerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); - const amountToTransfer = ownerBalance; - - const spenderAllowance = await zeroEx.token.getAllowanceAsync(tokenAddress, owner, spender); - const spenderAllowanceIsInsufficient = spenderAllowance.cmp(amountToTransfer) < 0; - expect(spenderAllowanceIsInsufficient).to.be.true(); - - return expect( - token.transferFrom.call(owner, spender, amountToTransfer, { - from: spender, - }), - ).to.be.rejectedWith(constants.REVERT); - }); - - it('should return true on a 0 value transfer', async () => { - const amountToTransfer = 0; - const didReturnTrue = await token.transferFrom.call(owner, spender, amountToTransfer, { from: spender }); - expect(didReturnTrue).to.be.true(); - }); - - it('should not modify spender allowance if spender allowance is 2^256 - 1', async () => { - const initOwnerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); - const amountToTransfer = initOwnerBalance; - const initSpenderAllowance = zeroEx.token.UNLIMITED_ALLOWANCE_IN_BASE_UNITS; - await zeroEx.token.setAllowanceAsync(tokenAddress, owner, spender, initSpenderAllowance); - await zeroEx.token.transferFromAsync(tokenAddress, owner, spender, spender, amountToTransfer, { - gasLimit: constants.MAX_TOKEN_TRANSFERFROM_GAS, - }); - - const newSpenderAllowance = await zeroEx.token.getAllowanceAsync(tokenAddress, owner, spender); - expect(initSpenderAllowance).to.be.bignumber.equal(newSpenderAllowance); - }); - - it('should transfer the correct balances if spender has sufficient allowance', async () => { - const initOwnerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); - const amountToTransfer = initOwnerBalance; - const initSpenderAllowance = initOwnerBalance; - await zeroEx.token.setAllowanceAsync(tokenAddress, owner, spender, initSpenderAllowance); - await zeroEx.token.transferFromAsync(tokenAddress, owner, spender, spender, amountToTransfer, { - gasLimit: constants.MAX_TOKEN_TRANSFERFROM_GAS, - }); - - const newOwnerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); - const newSpenderBalance = await zeroEx.token.getBalanceAsync(tokenAddress, spender); - - expect(newOwnerBalance).to.be.bignumber.equal(0); - expect(newSpenderBalance).to.be.bignumber.equal(initOwnerBalance); - }); - - it('should modify allowance if spender has sufficient allowance less than 2^256 - 1', async () => { - const initOwnerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); - const amountToTransfer = initOwnerBalance; - const initSpenderAllowance = initOwnerBalance; - await zeroEx.token.setAllowanceAsync(tokenAddress, owner, spender, initSpenderAllowance); - await zeroEx.token.transferFromAsync(tokenAddress, owner, spender, spender, amountToTransfer, { - gasLimit: constants.MAX_TOKEN_TRANSFERFROM_GAS, - }); - - const newSpenderAllowance = await zeroEx.token.getAllowanceAsync(tokenAddress, owner, spender); - expect(newSpenderAllowance).to.be.bignumber.equal(0); - }); - }); -}); -- cgit