51 lines
1.2 KiB
Solidity
51 lines
1.2 KiB
Solidity
/*
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Copyright 2019 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 ^0.5.9;
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import "@0x/contracts-utils/contracts/src/LibBytes.sol";
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contract ContractCallReceiver {
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using LibBytes for bytes;
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event ContractCall(
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bytes4 functionSelector,
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bytes data,
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uint256 value
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);
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bytes4 constant internal ALWAYS_REVERT_SELECTOR = 0xF1F2F3F4;
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function ()
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external
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payable
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{
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bytes4 selector = msg.data.readBytes4(0);
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if (selector == ALWAYS_REVERT_SELECTOR) {
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revert();
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}
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emit ContractCall(
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selector,
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msg.data,
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msg.value
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);
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}
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} |