eth-faucet

Gas token gifter with controls from time intervals, amounts and access
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commit daafa36f4ec3c73291191dbbb4702d1427d4089e
Author: lash <dev@holbrook.no>
Date:   Fri,  3 Feb 2023 06:14:40 +0000

Initial commit

Diffstat:
Asolidity/faucet.sol | 78++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 78 insertions(+), 0 deletions(-)

diff --git a/solidity/faucet.sol b/solidity/faucet.sol @@ -0,0 +1,78 @@ +pragma solidity >0.8.0; + +// SPDX-License-Identifier: GPL-3.0-or-later + +contract EthFacuet { + + address public owner; + address public registry; + uint256 public value; + uint256 public period; + + mapping (address => uint256) public lastUsed; + + event FaucetUsed(address indexed _recipient, address indexed _token, uint256 _value); + event FaucetFail(address indexed _recipient, address indexed _token, uint256 _value); + event FaucetAmountChange(uint256 _value); + + constructor(address _registry, uint256 periodMinutes) { + registry = _registry; + period = periodMinutes; + owner = msg.sender; + } + + function setValue(uint256 _v) public returns(uint256) { + require(msg.sender == owner, 'ERR_NOT_OWNER'); + value = _v; + emit FaucetAmountChange(value); + return value; + } + + function checkPeriod(address _recipient) private view returns(bool) { + if (lastUsed[_recipient] == 0) { + return true; + } + require(block.timestamp > lastUsed[_recipient] + period); + return true; + } + + function checkRegistry(address _recipient) private returns(bool) { + bool _ok; + bytes memory _result; + + (_ok, _result) = registry.call(abi.encodeWithSignature("have(address)", _recipient)); + if (!_ok) { + emit FaucetFail(_recipient, address(0), value); + revert('ERR_TRANSFER'); + } + + emit FaucetUsed(_recipient, address(0), value); + return true; + } + + function check(address _recipient) private returns(bool) { + if (period > 0) { + checkPeriod(_recipient); + } + if (registry != address(0)) { + checkRegistry(_recipient); + } + return true; + } + + + function get() public returns(uint256) { + check(msg.sender); + payable(msg.sender).transfer(value); + return value; + } + + function to(address _recipient) public returns(uint256) { + check(_recipient); + payable(_recipient).transfer(value); + return value; + } + + receive () payable external { + } +}