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-rw-r--r--packages/contracts/src/current/multisig/MultiSigWallet/MultiSigWallet.sol366
-rw-r--r--packages/contracts/src/current/multisig/MultiSigWalletWithTimeLock/MultiSigWalletWithTimeLock.sol132
-rw-r--r--packages/contracts/src/current/multisig/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.sol82
-rw-r--r--packages/contracts/src/current/protocol/Exchange/Exchange.sol602
-rw-r--r--packages/contracts/src/current/protocol/TokenRegistry/TokenRegistry.sol308
-rw-r--r--packages/contracts/src/current/protocol/TokenTransferProxy/TokenTransferProxy.sol115
-rw-r--r--packages/contracts/src/current/test/DummyToken/DummyToken.sol37
-rw-r--r--packages/contracts/src/current/test/MaliciousToken/MaliciousToken.sol31
-rw-r--r--packages/contracts/src/current/test/Mintable/Mintable.sol18
-rw-r--r--packages/contracts/src/current/tokens/ERC20Token/ERC20Token.sol58
-rw-r--r--packages/contracts/src/current/tokens/Token/Token.sol35
-rw-r--r--packages/contracts/src/current/tokens/UnlimitedAllowanceToken/UnlimitedAllowanceToken.sol46
-rw-r--r--packages/contracts/src/current/tokens/WETH9/WETH9.sol756
-rw-r--r--packages/contracts/src/current/tokens/ZRXToken/ZRXToken.sol33
-rw-r--r--packages/contracts/src/current/utils/Ownable/Ownable.sol32
-rw-r--r--packages/contracts/src/current/utils/SafeMath/SafeMath.sol73
-rw-r--r--packages/contracts/src/previous/ERC20Token/ERC20Token_v1.sol44
-rw-r--r--packages/contracts/src/previous/Ownable/Ownable_v1.sol27
-rw-r--r--packages/contracts/src/previous/SafeMath/SafeMath_v1.sol73
-rw-r--r--packages/contracts/src/previous/Token/Token_v1.sol39
-rw-r--r--packages/contracts/src/previous/UnlimitedAllowanceToken/UnlimitedAllowanceToken_v1.sol52
21 files changed, 2959 insertions, 0 deletions
diff --git a/packages/contracts/src/current/multisig/MultiSigWallet/MultiSigWallet.sol b/packages/contracts/src/current/multisig/MultiSigWallet/MultiSigWallet.sol
new file mode 100644
index 000000000..ae7ef06fd
--- /dev/null
+++ b/packages/contracts/src/current/multisig/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 - <stefan.george@consensys.net>
+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 - 1; i++)
+ if (owners[i] == owner) {
+ owners[i] = owners[owners.length - 1];
+ break;
+ }
+ owners.length -= 1;
+ if (required > 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<owners.length; i++)
+ if (owners[i] == owner) {
+ owners[i] = newOwner;
+ break;
+ }
+ isOwner[owner] = false;
+ isOwner[newOwner] = true;
+ OwnerRemoval(owner);
+ OwnerAddition(newOwner);
+ }
+
+ /// @dev Allows to change the number of required confirmations. Transaction has to be sent by wallet.
+ /// @param _required Number of required confirmations.
+ function changeRequirement(uint _required)
+ public
+ onlyWallet
+ validRequirement(owners.length, _required)
+ {
+ required = _required;
+ RequirementChange(_required);
+ }
+
+ /// @dev Allows an owner to submit and confirm a transaction.
+ /// @param destination Transaction target address.
+ /// @param value Transaction ether value.
+ /// @param data Transaction data payload.
+ /// @return Returns transaction ID.
+ function submitTransaction(address destination, uint value, bytes data)
+ public
+ returns (uint transactionId)
+ {
+ transactionId = addTransaction(destination, value, data);
+ confirmTransaction(transactionId);
+ }
+
+ /// @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)
+ {
+ confirmations[transactionId][msg.sender] = true;
+ Confirmation(msg.sender, transactionId);
+ executeTransaction(transactionId);
+ }
+
+ /// @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)
+ {
+ 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)
+ {
+ if (isConfirmed(transactionId)) {
+ Transaction tx = transactions[transactionId];
+ tx.executed = true;
+ if (tx.destination.call.value(tx.value)(tx.data))
+ Execution(transactionId);
+ else {
+ ExecutionFailure(transactionId);
+ tx.executed = false;
+ }
+ }
+ }
+
+ /// @dev Returns the confirmation status of a transaction.
+ /// @param transactionId Transaction ID.
+ /// @return Confirmation status.
+ function isConfirmed(uint transactionId)
+ public
+ constant
+ returns (bool)
+ {
+ uint count = 0;
+ for (uint i=0; i<owners.length; i++) {
+ if (confirmations[transactionId][owners[i]])
+ count += 1;
+ if (count == required)
+ return true;
+ }
+ }
+
+ /*
+ * Internal functions
+ */
+ /// @dev Adds a new transaction to the transaction mapping, if transaction does not exist yet.
+ /// @param destination Transaction target address.
+ /// @param value Transaction ether value.
+ /// @param data Transaction data payload.
+ /// @return Returns transaction ID.
+ function addTransaction(address destination, uint value, bytes data)
+ internal
+ notNull(destination)
+ returns (uint transactionId)
+ {
+ transactionId = transactionCount;
+ transactions[transactionId] = Transaction({
+ destination: destination,
+ value: value,
+ data: data,
+ executed: false
+ });
+ transactionCount += 1;
+ Submission(transactionId);
+ }
+
+ /*
+ * Web3 call functions
+ */
+ /// @dev Returns number of confirmations of a transaction.
+ /// @param transactionId Transaction ID.
+ /// @return Number of confirmations.
+ function getConfirmationCount(uint transactionId)
+ public
+ constant
+ returns (uint count)
+ {
+ for (uint i=0; i<owners.length; i++)
+ if (confirmations[transactionId][owners[i]])
+ count += 1;
+ }
+
+ /// @dev Returns total number of transactions after filers are applied.
+ /// @param pending Include pending transactions.
+ /// @param executed Include executed transactions.
+ /// @return Total number of transactions after filters are applied.
+ function getTransactionCount(bool pending, bool executed)
+ public
+ constant
+ returns (uint count)
+ {
+ for (uint i=0; i<transactionCount; i++)
+ if ( pending && !transactions[i].executed
+ || executed && transactions[i].executed)
+ count += 1;
+ }
+
+ /// @dev Returns list of owners.
+ /// @return List of owner addresses.
+ function getOwners()
+ public
+ constant
+ returns (address[])
+ {
+ return owners;
+ }
+
+ /// @dev Returns array with owner addresses, which confirmed transaction.
+ /// @param transactionId Transaction ID.
+ /// @return Returns array of owner addresses.
+ function getConfirmations(uint transactionId)
+ public
+ constant
+ returns (address[] _confirmations)
+ {
+ address[] memory confirmationsTemp = new address[](owners.length);
+ uint count = 0;
+ uint i;
+ for (i=0; i<owners.length; i++)
+ if (confirmations[transactionId][owners[i]]) {
+ confirmationsTemp[count] = owners[i];
+ count += 1;
+ }
+ _confirmations = new address[](count);
+ for (i=0; i<count; i++)
+ _confirmations[i] = confirmationsTemp[i];
+ }
+
+ /// @dev Returns list of transaction IDs in defined range.
+ /// @param from Index start position of transaction array.
+ /// @param to Index end position of transaction array.
+ /// @param pending Include pending transactions.
+ /// @param executed Include executed transactions.
+ /// @return Returns array of transaction IDs.
+ function getTransactionIds(uint from, uint to, bool pending, bool executed)
+ public
+ constant
+ returns (uint[] _transactionIds)
+ {
+ uint[] memory transactionIdsTemp = new uint[](transactionCount);
+ uint count = 0;
+ uint i;
+ for (i=0; i<transactionCount; i++)
+ if ( pending && !transactions[i].executed
+ || executed && transactions[i].executed)
+ {
+ transactionIdsTemp[count] = i;
+ count += 1;
+ }
+ _transactionIds = new uint[](to - from);
+ for (i=from; i<to; i++)
+ _transactionIds[i - from] = transactionIdsTemp[i];
+ }
+}
+
diff --git a/packages/contracts/src/current/multisig/MultiSigWalletWithTimeLock/MultiSigWalletWithTimeLock.sol b/packages/contracts/src/current/multisig/MultiSigWalletWithTimeLock/MultiSigWalletWithTimeLock.sol
new file mode 100644
index 000000000..46c152035
--- /dev/null
+++ b/packages/contracts/src/current/multisig/MultiSigWalletWithTimeLock/MultiSigWalletWithTimeLock.sol
@@ -0,0 +1,132 @@
+/*
+
+ 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 { MultiSigWallet } from "../MultiSigWallet/MultiSigWallet.sol";
+
+/// @title Multisignature wallet with time lock- Allows multiple parties to execute a transaction after a time lock has passed.
+/// @author Amir Bandeali - <amir@0xProject.com>
+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/src/current/multisig/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.sol b/packages/contracts/src/current/multisig/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.sol
new file mode 100644
index 000000000..8cc8372c1
--- /dev/null
+++ b/packages/contracts/src/current/multisig/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 } from "../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/src/current/protocol/Exchange/Exchange.sol b/packages/contracts/src/current/protocol/Exchange/Exchange.sol
new file mode 100644
index 000000000..12ac8141f
--- /dev/null
+++ b/packages/contracts/src/current/protocol/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 } from "../TokenTransferProxy/TokenTransferProxy.sol";
+import { Token_v1 as Token } from "../../../previous/Token/Token_v1.sol";
+import { SafeMath_v1 as SafeMath } from "../../../previous/SafeMath/SafeMath_v1.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/contracts/src/current/protocol/TokenRegistry/TokenRegistry.sol b/packages/contracts/src/current/protocol/TokenRegistry/TokenRegistry.sol
new file mode 100644
index 000000000..3bd2fbfaf
--- /dev/null
+++ b/packages/contracts/src/current/protocol/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 { Ownable_v1 as Ownable } from "../../../previous/Ownable/Ownable_v1.sol";
+
+/// @title Token Registry - Stores metadata associated with ERC20 tokens. See ERC22 https://github.com/ethereum/EIPs/issues/22
+/// @author Amir Bandeali - <amir@0xProject.com>, Will Warren - <will@0xProject.com>
+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/src/current/protocol/TokenTransferProxy/TokenTransferProxy.sol b/packages/contracts/src/current/protocol/TokenTransferProxy/TokenTransferProxy.sol
new file mode 100644
index 000000000..1ce949fa6
--- /dev/null
+++ b/packages/contracts/src/current/protocol/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 { Token_v1 as Token } from "../../../previous/Token/Token_v1.sol";
+import { Ownable_v1 as Ownable } from "../../../previous/Ownable/Ownable_v1.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/contracts/src/current/test/DummyToken/DummyToken.sol b/packages/contracts/src/current/test/DummyToken/DummyToken.sol
new file mode 100644
index 000000000..ab04f4d16
--- /dev/null
+++ b/packages/contracts/src/current/test/DummyToken/DummyToken.sol
@@ -0,0 +1,37 @@
+pragma solidity ^0.4.18;
+
+import { Mintable } from "../Mintable/Mintable.sol";
+import { Ownable } from "../../utils/Ownable/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)
+ 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/src/current/test/MaliciousToken/MaliciousToken.sol b/packages/contracts/src/current/test/MaliciousToken/MaliciousToken.sol
new file mode 100644
index 000000000..9e502616c
--- /dev/null
+++ b/packages/contracts/src/current/test/MaliciousToken/MaliciousToken.sol
@@ -0,0 +1,31 @@
+pragma solidity ^0.4.18;
+
+import { ERC20Token } from "../../tokens/ERC20Token/ERC20Token.sol";
+
+contract MaliciousToken is ERC20Token {
+ 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/src/current/test/Mintable/Mintable.sol b/packages/contracts/src/current/test/Mintable/Mintable.sol
new file mode 100644
index 000000000..cf7ee35a5
--- /dev/null
+++ b/packages/contracts/src/current/test/Mintable/Mintable.sol
@@ -0,0 +1,18 @@
+pragma solidity ^0.4.18;
+
+import { UnlimitedAllowanceToken } from "../../tokens/UnlimitedAllowanceToken/UnlimitedAllowanceToken.sol";
+import { SafeMath } from "../../utils/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/src/current/tokens/ERC20Token/ERC20Token.sol b/packages/contracts/src/current/tokens/ERC20Token/ERC20Token.sol
new file mode 100644
index 000000000..0e5b87aa4
--- /dev/null
+++ b/packages/contracts/src/current/tokens/ERC20Token/ERC20Token.sol
@@ -0,0 +1,58 @@
+pragma solidity ^0.4.18;
+
+import { Token } from "../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/src/current/tokens/Token/Token.sol b/packages/contracts/src/current/tokens/Token/Token.sol
new file mode 100644
index 000000000..bf4e71dcd
--- /dev/null
+++ b/packages/contracts/src/current/tokens/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/src/current/tokens/UnlimitedAllowanceToken/UnlimitedAllowanceToken.sol b/packages/contracts/src/current/tokens/UnlimitedAllowanceToken/UnlimitedAllowanceToken.sol
new file mode 100644
index 000000000..699f535d2
--- /dev/null
+++ b/packages/contracts/src/current/tokens/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 } from "../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/src/current/tokens/WETH9/WETH9.sol b/packages/contracts/src/current/tokens/WETH9/WETH9.sol
new file mode 100644
index 000000000..733ca414b
--- /dev/null
+++ b/packages/contracts/src/current/tokens/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 <http://www.gnu.org/licenses/>.
+
+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. <http://fsf.org/>
+ 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. By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users. We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors. You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
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+
+ Nothing in this License shall be construed as excluding or limiting
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+ 12. No Surrender of Others' Freedom.
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+ If conditions are imposed on you (whether by court order, agreement or
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+ 13. Use with the GNU Affero General Public License.
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+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+ 17. Interpretation of Sections 15 and 16.
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+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ 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 <http://www.gnu.org/licenses/>.
+
+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:
+
+ <program> Copyright (C) <year> <name of author>
+ 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
+<http://www.gnu.org/licenses/>.
+
+ 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
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+
+*/
diff --git a/packages/contracts/src/current/tokens/ZRXToken/ZRXToken.sol b/packages/contracts/src/current/tokens/ZRXToken/ZRXToken.sol
new file mode 100644
index 000000000..7f5e1f849
--- /dev/null
+++ b/packages/contracts/src/current/tokens/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 { UnlimitedAllowanceToken_v1 as UnlimitedAllowanceToken } from "../../../previous/UnlimitedAllowanceToken/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/src/current/utils/Ownable/Ownable.sol b/packages/contracts/src/current/utils/Ownable/Ownable.sol
new file mode 100644
index 000000000..9b3d6b9cf
--- /dev/null
+++ b/packages/contracts/src/current/utils/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/src/current/utils/SafeMath/SafeMath.sol b/packages/contracts/src/current/utils/SafeMath/SafeMath.sol
new file mode 100644
index 000000000..955a9e379
--- /dev/null
+++ b/packages/contracts/src/current/utils/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/src/previous/ERC20Token/ERC20Token_v1.sol b/packages/contracts/src/previous/ERC20Token/ERC20Token_v1.sol
new file mode 100644
index 000000000..e05ee2d5e
--- /dev/null
+++ b/packages/contracts/src/previous/ERC20Token/ERC20Token_v1.sol
@@ -0,0 +1,44 @@
+pragma solidity ^0.4.11;
+
+import { Token_v1 as Token } from "../Token/Token_v1.sol";
+
+contract ERC20Token_v1 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/src/previous/Ownable/Ownable_v1.sol b/packages/contracts/src/previous/Ownable/Ownable_v1.sol
new file mode 100644
index 000000000..3630678f7
--- /dev/null
+++ b/packages/contracts/src/previous/Ownable/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_v1 {
+ 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/src/previous/SafeMath/SafeMath_v1.sol b/packages/contracts/src/previous/SafeMath/SafeMath_v1.sol
new file mode 100644
index 000000000..341d611ec
--- /dev/null
+++ b/packages/contracts/src/previous/SafeMath/SafeMath_v1.sol
@@ -0,0 +1,73 @@
+pragma solidity ^0.4.11;
+
+contract SafeMath_v1 {
+ 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/src/previous/Token/Token_v1.sol b/packages/contracts/src/previous/Token/Token_v1.sol
new file mode 100644
index 000000000..de619fb7e
--- /dev/null
+++ b/packages/contracts/src/previous/Token/Token_v1.sol
@@ -0,0 +1,39 @@
+pragma solidity ^0.4.11;
+
+contract Token_v1 {
+
+ /// @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/src/previous/UnlimitedAllowanceToken/UnlimitedAllowanceToken_v1.sol b/packages/contracts/src/previous/UnlimitedAllowanceToken/UnlimitedAllowanceToken_v1.sol
new file mode 100644
index 000000000..6376f3f2c
--- /dev/null
+++ b/packages/contracts/src/previous/UnlimitedAllowanceToken/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 { ERC20Token_v1 as ERC20Token } from "../ERC20Token/ERC20Token_v1.sol";
+
+contract UnlimitedAllowanceToken_v1 is ERC20Token {
+
+ 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;
+ }
+ }
+}