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authorAmir Bandeali <abandeali1@gmail.com>2018-06-27 10:12:43 +0800
committerAmir Bandeali <abandeali1@gmail.com>2018-06-30 09:05:40 +0800
commit2fcc36bbadcb8238ee292afc58c2cd460d1b69da (patch)
tree235d3f2b361194a2e9ba41c4981a35daa99ac863 /packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol
parent762c0143eb10306ca70b0f206e80eb9aed925f99 (diff)
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+/*
+
+ 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 ^0.4.10;
+
+import "../../multisig/MultiSigWalletWithTimeLock.sol";
+import "../../utils/LibBytes/LibBytes.sol";
+
+contract AssetProxyOwner is
+ MultiSigWalletWithTimeLock
+{
+ using LibBytes for bytes;
+
+ event AssetProxyRegistration(address assetProxyContract, bool isRegistered);
+
+ // Mapping of AssetProxy contract address =>
+ // if this contract is allowed to call the AssetProxy's `removeAuthorizedAddressAtIndex` method without a time lock.
+ mapping (address => bool) public isAssetProxyRegistered;
+
+ bytes4 constant REMOVE_AUTHORIZED_ADDRESS_AT_INDEX_SELECTOR = bytes4(keccak256("removeAuthorizedAddressAtIndex(address,uint256)"));
+
+ /// @dev Function will revert if the transaction does not call `removeAuthorizedAddressAtIndex`
+ /// on an approved AssetProxy contract.
+ modifier validRemoveAuthorizedAddressAtIndexTx(uint256 transactionId) {
+ Transaction storage tx = transactions[transactionId];
+ require(isAssetProxyRegistered[tx.destination]);
+ require(tx.data.readBytes4(0) == REMOVE_AUTHORIZED_ADDRESS_AT_INDEX_SELECTOR);
+ _;
+ }
+
+ /// @dev Contract constructor sets initial owners, required number of confirmations,
+ /// time lock, and list of AssetProxy addresses.
+ /// @param _owners List of initial owners.
+ /// @param _assetProxyContracts Array of AssetProxy contract addresses.
+ /// @param _required Number of required confirmations.
+ /// @param _secondsTimeLocked Duration needed after a transaction is confirmed and before it becomes executable, in seconds.
+ function AssetProxyOwner(
+ address[] memory _owners,
+ address[] memory _assetProxyContracts,
+ uint256 _required,
+ uint256 _secondsTimeLocked
+ )
+ public
+ MultiSigWalletWithTimeLock(_owners, _required, _secondsTimeLocked)
+ {
+ for (uint256 i = 0; i < _assetProxyContracts.length; i++) {
+ address assetProxy = _assetProxyContracts[i];
+ require(assetProxy != address(0));
+ isAssetProxyRegistered[assetProxy] = true;
+ }
+ }
+
+ /// @dev Registers or deregisters an AssetProxy to be able to execute
+ /// `removeAuthorizedAddressAtIndex` without a timelock.
+ /// @param assetProxyContract Address of AssetProxy contract.
+ /// @param isRegistered Status of approval for AssetProxy contract.
+ function registerAssetProxy(address assetProxyContract, bool isRegistered)
+ public
+ onlyWallet
+ notNull(assetProxyContract)
+ {
+ isAssetProxyRegistered[assetProxyContract] = isRegistered;
+ AssetProxyRegistration(assetProxyContract, isRegistered);
+ }
+
+ /// @dev Allows execution of `removeAuthorizedAddressAtIndex` without time lock.
+ /// @param transactionId Transaction ID.
+ function executeRemoveAuthorizedAddressAtIndex(uint256 transactionId)
+ public
+ notExecuted(transactionId)
+ fullyConfirmed(transactionId)
+ validRemoveAuthorizedAddressAtIndexTx(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;
+ }
+ }
+}