55 lines
1.6 KiB
Solidity
55 lines
1.6 KiB
Solidity
// SPDX-License-Identifier: Apache-2.0
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/*
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Copyright 2020 ZeroEx Intl.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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pragma solidity ^0.6.5;
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library LibSignatureRichErrors {
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enum SignatureValidationErrorCodes {
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ALWAYS_INVALID,
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INVALID_LENGTH,
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UNSUPPORTED,
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ILLEGAL,
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WRONG_SIGNER,
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BAD_SIGNATURE_DATA
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}
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function SignatureValidationError(
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SignatureValidationErrorCodes code,
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bytes32 hash,
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address signerAddress,
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bytes memory signature
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) internal pure returns (bytes memory) {
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return
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abi.encodeWithSelector(
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bytes4(keccak256("SignatureValidationError(uint8,bytes32,address,bytes)")),
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code,
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hash,
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signerAddress,
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signature
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);
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}
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function SignatureValidationError(
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SignatureValidationErrorCodes code,
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bytes32 hash
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) internal pure returns (bytes memory) {
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return abi.encodeWithSelector(bytes4(keccak256("SignatureValidationError(uint8,bytes32)")), code, hash);
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}
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}
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