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author | Amir Bandeali <abandeali1@gmail.com> | 2018-07-23 23:00:06 +0800 |
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committer | GitHub <noreply@github.com> | 2018-07-23 23:00:06 +0800 |
commit | 554b18a466d5cc65271daa61aba96138ce7408f0 (patch) | |
tree | 75976e979b713fb47c9462f1a3bc30a184cc568c /packages/contracts/src/2.0.0/examples/Wallet/Wallet.sol | |
parent | 855b6b1dc5597f360451232ff6dfc91beb3a9f50 (diff) | |
parent | c2ae9f62a41466c714a5e2232782d08261464b9c (diff) | |
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Merge pull request #906 from 0xProject/refactor/contracts/examples
[contracts] Add `examples` directory
Diffstat (limited to 'packages/contracts/src/2.0.0/examples/Wallet/Wallet.sol')
-rw-r--r-- | packages/contracts/src/2.0.0/examples/Wallet/Wallet.sol | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/packages/contracts/src/2.0.0/examples/Wallet/Wallet.sol b/packages/contracts/src/2.0.0/examples/Wallet/Wallet.sol new file mode 100644 index 000000000..b75021a31 --- /dev/null +++ b/packages/contracts/src/2.0.0/examples/Wallet/Wallet.sol @@ -0,0 +1,65 @@ +/* + + 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 0.4.24; + +import "../../protocol/Exchange/interfaces/IWallet.sol"; +import "../../utils/LibBytes/LibBytes.sol"; + + +contract Wallet is + IWallet +{ + using LibBytes for bytes; + + // The owner of this wallet. + // solhint-disable-next-line var-name-mixedcase + address internal WALLET_OWNER; + + /// @dev constructs a new `Wallet` with a single owner. + /// @param walletOwner The owner of this wallet. + constructor (address walletOwner) public { + WALLET_OWNER = walletOwner; + } + + /// @dev Validates an EIP712 signature. + /// The signer must match the owner of this wallet. + /// @param hash Message hash that is signed. + /// @param eip712Signature Proof of signing. + /// @return Validity of signature. + function isValidSignature( + bytes32 hash, + bytes eip712Signature + ) + external + view + returns (bool isValid) + { + require( + eip712Signature.length == 65, + "LENGTH_65_REQUIRED" + ); + + uint8 v = uint8(eip712Signature[0]); + bytes32 r = eip712Signature.readBytes32(1); + bytes32 s = eip712Signature.readBytes32(33); + address recoveredAddress = ecrecover(hash, v, r, s); + isValid = WALLET_OWNER == recoveredAddress; + return isValid; + } +} |