diff options
Diffstat (limited to 'packages/sol-compiler/test')
9 files changed, 948 insertions, 0 deletions
diff --git a/packages/sol-compiler/test/compiler_test.ts b/packages/sol-compiler/test/compiler_test.ts new file mode 100644 index 000000000..9baf433d4 --- /dev/null +++ b/packages/sol-compiler/test/compiler_test.ts @@ -0,0 +1,44 @@ +import * as chai from 'chai'; +import 'mocha'; + +import { Compiler } from '../src/compiler'; +import { fsWrapper } from '../src/utils/fs_wrapper'; +import { CompilerOptions, ContractArtifact, ContractNetworkData, DoneCallback } from '../src/utils/types'; + +import { exchange_binary } from './fixtures/exchange_bin'; +import { constants } from './util/constants'; + +const expect = chai.expect; + +describe('#Compiler', function() { + this.timeout(constants.timeoutMs); + const artifactsDir = `${__dirname}/fixtures/artifacts`; + const contractsDir = `${__dirname}/fixtures/contracts`; + const exchangeArtifactPath = `${artifactsDir}/Exchange.json`; + const compilerOpts: CompilerOptions = { + artifactsDir, + contractsDir, + contracts: constants.contracts, + }; + const compiler = new Compiler(compilerOpts); + beforeEach((done: DoneCallback) => { + (async () => { + if (fsWrapper.doesPathExistSync(exchangeArtifactPath)) { + await fsWrapper.removeFileAsync(exchangeArtifactPath); + } + await compiler.compileAsync(); + done(); + })().catch(done); + }); + it('should create an Exchange artifact with the correct unlinked binary', async () => { + const opts = { + encoding: 'utf8', + }; + const exchangeArtifactString = await fsWrapper.readFileAsync(exchangeArtifactPath, opts); + const exchangeArtifact: ContractArtifact = JSON.parse(exchangeArtifactString); + // The last 43 bytes of the binaries are metadata which may not be equivalent + const unlinkedBinaryWithoutMetadata = exchangeArtifact.compilerOutput.evm.bytecode.object.slice(0, -86); + const exchangeBinaryWithoutMetadata = exchange_binary.slice(0, -86); + expect(unlinkedBinaryWithoutMetadata).to.equal(exchangeBinaryWithoutMetadata); + }); +}); diff --git a/packages/sol-compiler/test/compiler_utils_test.ts b/packages/sol-compiler/test/compiler_utils_test.ts new file mode 100644 index 000000000..4fe7b994e --- /dev/null +++ b/packages/sol-compiler/test/compiler_utils_test.ts @@ -0,0 +1,83 @@ +import * as chai from 'chai'; +import * as dirtyChai from 'dirty-chai'; +import * as _ from 'lodash'; +import 'mocha'; + +import { + createDirIfDoesNotExistAsync, + getNormalizedErrMsg, + parseDependencies, + parseSolidityVersionRange, +} from '../src/utils/compiler'; +import { fsWrapper } from '../src/utils/fs_wrapper'; + +chai.use(dirtyChai); +const expect = chai.expect; + +describe('Compiler utils', () => { + describe('#getNormalizedErrorMessage', () => { + it('normalizes the error message', () => { + const errMsg = 'base/Token.sol:6:46: Warning: Unused local variable'; + const normalizedErrMsg = getNormalizedErrMsg(errMsg); + expect(normalizedErrMsg).to.be.equal('Token.sol:6:46: Warning: Unused local variable'); + }); + }); + describe('#createDirIfDoesNotExistAsync', () => { + it('creates artifacts dir', async () => { + const artifactsDir = `${__dirname}/artifacts`; + expect(fsWrapper.doesPathExistSync(artifactsDir)).to.be.false(); + await createDirIfDoesNotExistAsync(artifactsDir); + expect(fsWrapper.doesPathExistSync(artifactsDir)).to.be.true(); + fsWrapper.rmdirSync(artifactsDir); + expect(fsWrapper.doesPathExistSync(artifactsDir)).to.be.false(); + }); + }); + describe('#parseSolidityVersionRange', () => { + it('correctly parses the version range', () => { + expect(parseSolidityVersionRange('pragma solidity ^0.0.1;')).to.be.equal('^0.0.1'); + expect(parseSolidityVersionRange('\npragma solidity 0.0.1;')).to.be.equal('0.0.1'); + expect(parseSolidityVersionRange('pragma solidity <=1.0.1;')).to.be.equal('<=1.0.1'); + expect(parseSolidityVersionRange('pragma solidity ~1.0.1;')).to.be.equal('~1.0.1'); + }); + // TODO: For now that doesn't work. This will work after we switch to a grammar-based parser + it.skip('correctly parses the version range with comments', () => { + expect(parseSolidityVersionRange('// pragma solidity ~1.0.1;\npragma solidity ~1.0.2;')).to.be.equal( + '~1.0.2', + ); + }); + }); + describe('#parseDependencies', () => { + it('correctly parses Exchange dependencies', async () => { + const path = `${__dirname}/fixtures/contracts/Exchange.sol`; + const source = await fsWrapper.readFileAsync(path, { + encoding: 'utf8', + }); + const dependencies = parseDependencies({ source, path }); + const expectedDependencies = [ + 'zeppelin-solidity/contracts/token/ERC20/ERC20.sol', + 'packages/sol-compiler/lib/test/fixtures/contracts/TokenTransferProxy.sol', + 'packages/sol-compiler/lib/test/fixtures/contracts/base/SafeMath.sol', + ]; + _.each(expectedDependencies, expectedDepdency => { + const foundDependency = _.find(dependencies, dependency => _.endsWith(dependency, expectedDepdency)); + expect(foundDependency, `${expectedDepdency} not found`).to.not.be.undefined(); + }); + }); + it('correctly parses TokenTransferProxy dependencies', async () => { + const path = `${__dirname}/fixtures/contracts/TokenTransferProxy.sol`; + const source = await fsWrapper.readFileAsync(path, { + encoding: 'utf8', + }); + expect(parseDependencies({ source, path })).to.be.deep.equal([ + 'zeppelin-solidity/contracts/ownership/Ownable.sol', + 'zeppelin-solidity/contracts/token/ERC20/ERC20.sol', + ]); + }); + // TODO: For now that doesn't work. This will work after we switch to a grammar-based parser + it.skip('correctly parses commented out dependencies', async () => { + const path = ''; + const source = `// import "./TokenTransferProxy.sol";`; + expect(parseDependencies({ path, source })).to.be.deep.equal([]); + }); + }); +}); diff --git a/packages/sol-compiler/test/fixtures/contracts/Exchange.sol b/packages/sol-compiler/test/fixtures/contracts/Exchange.sol new file mode 100644 index 000000000..e3725335b --- /dev/null +++ b/packages/sol-compiler/test/fixtures/contracts/Exchange.sol @@ -0,0 +1,603 @@ +/* + + Copyright 2018 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 ^0.4.14; + +import {ERC20 as Token} from "zeppelin-solidity/contracts/token/ERC20/ERC20.sol"; + +import "./TokenTransferProxy.sol"; +import "./base/SafeMath.sol"; + +/// @title Exchange - Facilitates exchange of ERC20 tokens. +/// @author Amir Bandeali - <amir@0xProject.com>, Will Warren - <will@0xProject.com> +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/sol-compiler/test/fixtures/contracts/TokenTransferProxy.sol b/packages/sol-compiler/test/fixtures/contracts/TokenTransferProxy.sol new file mode 100644 index 000000000..44570d459 --- /dev/null +++ b/packages/sol-compiler/test/fixtures/contracts/TokenTransferProxy.sol @@ -0,0 +1,115 @@ +/* + + Copyright 2018 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 ^0.4.14; + +import { Ownable } from "zeppelin-solidity/contracts/ownership/Ownable.sol"; +import { ERC20 as Token } from "zeppelin-solidity/contracts/token/ERC20/ERC20.sol"; + +/// @title TokenTransferProxy - Transfers tokens on behalf of contracts that have been approved via decentralized governance. +/// @author Amir Bandeali - <amir@0xProject.com>, Will Warren - <will@0xProject.com> +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/sol-compiler/test/fixtures/contracts/base/SafeMath.sol b/packages/sol-compiler/test/fixtures/contracts/base/SafeMath.sol new file mode 100644 index 000000000..92ce11cde --- /dev/null +++ b/packages/sol-compiler/test/fixtures/contracts/base/SafeMath.sol @@ -0,0 +1,41 @@ +pragma solidity ^0.4.14; + +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/sol-compiler/test/fixtures/contracts/base/Token.sol b/packages/sol-compiler/test/fixtures/contracts/base/Token.sol new file mode 100644 index 000000000..483010d7d --- /dev/null +++ b/packages/sol-compiler/test/fixtures/contracts/base/Token.sol @@ -0,0 +1,38 @@ +pragma solidity ^0.4.14; + +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/sol-compiler/test/fixtures/exchange_bin.ts b/packages/sol-compiler/test/fixtures/exchange_bin.ts new file mode 100644 index 000000000..914e76bf5 --- /dev/null +++ b/packages/sol-compiler/test/fixtures/exchange_bin.ts @@ -0,0 +1,4 @@ +export const constructor_args = + '0x000000000000000000000000e41d2489571d322189246dafa5ebde1f4699f4980000000000000000000000008da0d80f5007ef1e431dd2127178d224e32c2ef4'; +export const exchange_binary = + 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diff --git a/packages/sol-compiler/test/util/constants.ts b/packages/sol-compiler/test/util/constants.ts new file mode 100644 index 000000000..88d6db550 --- /dev/null +++ b/packages/sol-compiler/test/util/constants.ts @@ -0,0 +1,11 @@ +import { BigNumber } from '@0xproject/utils'; + +export const constants = { + networkId: 0, + optimizerEnabled: false, + gasPrice: new BigNumber(20000000000), + timeoutMs: 30000, + zrxTokenAddress: '0xe41d2489571d322189246dafa5ebde1f4699f498', + tokenTransferProxyAddress: '0x8da0d80f5007ef1e431dd2127178d224e32c2ef4', + contracts: '*' as '*', +}; diff --git a/packages/sol-compiler/test/util/provider.ts b/packages/sol-compiler/test/util/provider.ts new file mode 100644 index 000000000..e0fcb362a --- /dev/null +++ b/packages/sol-compiler/test/util/provider.ts @@ -0,0 +1,9 @@ +import { web3Factory } from '@0xproject/dev-utils'; +import { Provider } from '@0xproject/types'; +import * as Web3 from 'web3'; + +const providerConfigs = { shouldUseInProcessGanache: true }; +const web3Instance = web3Factory.create(providerConfigs); +const provider: Provider = web3Instance.currentProvider; + +export { provider }; |