84 lines
2.4 KiB
Solidity
84 lines
2.4 KiB
Solidity
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// SPDX-License-Identifier: CC0-1.0
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pragma solidity ^0.8.0;
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import {IERC5050Sender, IERC5050Receiver, Action} from "./IERC5050.sol";
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import {ActionsSet} from "./ActionsSet.sol";
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contract ERC5050Receiver is IERC5050Receiver {
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using ActionsSet for ActionsSet.Set;
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ActionsSet.Set _receivableActions;
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modifier onlyReceivableAction(Action calldata action, uint256 nonce) {
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require(
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action.to._address == address(this),
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"ERC5050: invalid receiver"
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);
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require(
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_receivableActions.contains(action.selector),
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"ERC5050: invalid action"
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);
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require(
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action.from._address == address(0) ||
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action.from._address == msg.sender,
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"ERC5050: invalid sender"
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);
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require(
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(action.from._address != address(0) && action.user == tx.origin) ||
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action.user == msg.sender,
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"ERC5050: invalid sender"
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);
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_;
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}
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function receivableActions() external view returns (string[] memory) {
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return _receivableActions.names();
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}
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function onActionReceived(Action calldata action, uint256 nonce)
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external
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payable
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virtual
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override
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onlyReceivableAction(action, nonce)
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{
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_onActionReceived(action, nonce);
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}
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function _onActionReceived(Action calldata action, uint256 nonce)
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internal
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virtual
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{
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if (action.state != address(0)) {
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require(action.state.isContract(), "ERC5050: invalid state");
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try
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IERC5050Receiver(action.state).onActionReceived{
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value: msg.value
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}(action, nonce)
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{} catch (bytes memory reason) {
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if (reason.length == 0) {
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revert("ERC5050: call to non ERC5050Receiver");
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} else {
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assembly {
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revert(add(32, reason), mload(reason))
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}
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}
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}
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}
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emit ActionReceived(
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action.selector,
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action.user,
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action.from._address,
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action.from._tokenId,
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action.to._address,
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action.to._tokenId,
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action.state,
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action.data
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);
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}
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function _registerReceivable(string memory action) internal {
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_receivableActions.add(action);
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}
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}
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