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ERC-20
Staking
Overview
Max Total Supply
174,206.98587122360204358 STONE
Holders
6,721 ( 0.119%)
Market
Price
$2,574.24 @ 1.021968 ETH (-0.38%)
Onchain Market Cap
$448,450,591.31
Circulating Supply Market Cap
$0.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
0.03298811274655408 STONEValue
$84.92 ( ~0.0337130564519393 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | 0X80137510979822322193FC997D400D5A6C747BF7-0X5300000000000000000000000000000000000004 | $2,575.95 1.0229490 Eth | $735,572.00 285.522 0X80137510979822322193FC997D400D5A6C747BF7 | 0.2385% |
2 | ![]() | 0XEC901DA9C68E90798BBBB74C11406A32A70652C3-0X0DC808ADCE2099A9F62AA87D9670745ABA741746 | $2,570.57 1.0228150 Eth | $137,258.00 53.387 0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | 0.0446% |
3 | ![]() | 0X93F4D0AB6A8B4271F4A28DB399B5E30612D21116-0XE5D7C2A44FFDDF6B295A15C148167DAAAF5CF34F | $2,578.22 1.0238530 Eth | $66,865.00 25.925 0X93F4D0AB6A8B4271F4A28DB399B5E30612D21116 | 0.0217% |
4 | ![]() | 0X95CEF13441BE50D20CA4558CC0A27B601AC544E5-0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | $2,570.60 1.0228280 Eth | $40,421.00 60,555.908 0X95CEF13441BE50D20CA4558CC0A27B601AC544E5 | 50.5829% |
5 | ![]() | 0XEC901DA9C68E90798BBBB74C11406A32A70652C3-0X0DC808ADCE2099A9F62AA87D9670745ABA741746 | $2,572.25 1.0237650 Eth | $19,649.52 7.643 0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | 0.0064% |
6 | ![]() | 0X80137510979822322193FC997D400D5A6C747BF7-0X5300000000000000000000000000000000000004 | $2,553.65 1.0140960 Eth | $19,601.10 7.632 0X80137510979822322193FC997D400D5A6C747BF7 | 0.0064% |
7 | ![]() | 0X80137510979822322193FC997D400D5A6C747BF7-0X5300000000000000000000000000000000000004 | $2,571.49 1.0231830 Eth | $14,185.55 5.515 0X80137510979822322193FC997D400D5A6C747BF7 | 0.0046% |
8 | ![]() | 0XEC901DA9C68E90798BBBB74C11406A32A70652C3-0X0DC808ADCE2099A9F62AA87D9670745ABA741746 | $2,575.07 1.0226020 Eth | $13,518.26 5.247 0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | 0.0044% |
9 | ![]() | 0X7122985656E38BDC0302DB86685BB972B145BD3C-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $2,578.02 1.0250480 Eth | $12,873.74 5.039 0X7122985656E38BDC0302DB86685BB972B145BD3C | 0.0042% |
10 | ![]() | 0XBDAD407F77F44F7DA6684B416B1951ECA461FB07-0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | $2,589.51 1.0303510 Eth | $10,678.21 10,127.140 0XBDAD407F77F44F7DA6684B416B1951ECA461FB07 | 8.4593% |
11 | ![]() | 0XBDAD407F77F44F7DA6684B416B1951ECA461FB07-0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | $2,575.60 1.0248170 Eth | $9,320.34 8,902.009 0XBDAD407F77F44F7DA6684B416B1951ECA461FB07 | 7.4359% |
12 | ![]() | 0XBDAD407F77F44F7DA6684B416B1951ECA461FB07-0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | $2,585.91 1.0289180 Eth | $7,231.61 6,872.641 0XBDAD407F77F44F7DA6684B416B1951ECA461FB07 | 5.7408% |
13 | ![]() | 0X80137510979822322193FC997D400D5A6C747BF7-0X5300000000000000000000000000000000000004 | $2,567.27 1.0215050 Eth | $6,141.14 2.393 0X80137510979822322193FC997D400D5A6C747BF7 | 0.0020% |
14 | ![]() | 0X80137510979822322193FC997D400D5A6C747BF7-0X5300000000000000000000000000000000000004 | $2,558.65 1.0180750 Eth | $5,590.22 2.179 0X80137510979822322193FC997D400D5A6C747BF7 | 0.0018% |
15 | ![]() | 0X95CEF13441BE50D20CA4558CC0A27B601AC544E5-0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | $2,570.60 1.0228280 Eth | $4,697.27 7,048.978 0X95CEF13441BE50D20CA4558CC0A27B601AC544E5 | 5.8881% |
16 | ![]() | 0XEC901DA9C68E90798BBBB74C11406A32A70652C3-0X0DC808ADCE2099A9F62AA87D9670745ABA741746 | $2,571.51 1.0231900 Eth | $3,290.75 1.286 0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | 0.0011% |
17 | ![]() | 0X80137510979822322193FC997D400D5A6C747BF7-0X5300000000000000000000000000000000000004 | $2,576.59 1.0232060 Eth | $2,260.84 0.878 0X80137510979822322193FC997D400D5A6C747BF7 | 0.0007% |
18 | ![]() | 0X80137510979822322193FC997D400D5A6C747BF7-0X4200000000000000000000000000000000000006 | $2,581.98 1.0266550 Eth | $1,629.90 0.631 0X80137510979822322193FC997D400D5A6C747BF7 | 0.0005% |
19 | ![]() | 0X93F4D0AB6A8B4271F4A28DB399B5E30612D21116-0XE5D7C2A44FFDDF6B295A15C148167DAAAF5CF34F | $2,598.86 1.0320470 Eth | $1,557.81 0.601 0X93F4D0AB6A8B4271F4A28DB399B5E30612D21116 | 0.0005% |
20 | ![]() | 0XEC901DA9C68E90798BBBB74C11406A32A70652C3-0X0DC808ADCE2099A9F62AA87D9670745ABA741746 | $2,580.94 1.0248410 Eth | $1,443.29 0.567 0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | 0.0005% |
21 | ![]() | 0X7122985656E38BDC0302DB86685BB972B145BD3C-0XE5018913F2FDF33971864804DDB5FCA25C539032 | $2,577.59 1.0247740 Eth | $1,278.21 0.493 0X7122985656E38BDC0302DB86685BB972B145BD3C | 0.0004% |
22 | ![]() | 0XEC901DA9C68E90798BBBB74C11406A32A70652C3-0X0DC808ADCE2099A9F62AA87D9670745ABA741746 | $2,571.50 1.0234690 Eth | $1,066.76 0.416 0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | 0.0003% |
23 | ![]() | 0XEC901DA9C68E90798BBBB74C11406A32A70652C3-0X0DC808ADCE2099A9F62AA87D9670745ABA741746 | $2,576.35 1.0244160 Eth | $969.00 0.381 0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | 0.0003% |
24 | ![]() | 0XB73603C5D87FA094B7314C74ACE2E64D165016FB-0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | $2,572.27 1.0237760 Eth | $701.90 689.325 0XB73603C5D87FA094B7314C74ACE2E64D165016FB | 0.5758% |
25 | ![]() | 0X1A51B19CE03DBE0CB44C1528E34A7EDD7771E9AF-0X93F4D0AB6A8B4271F4A28DB399B5E30612D21116 | $2,573.56 1.0232320 Eth | $552.65 11,883.656 0X1A51B19CE03DBE0CB44C1528E34A7EDD7771E9AF | 9.9265% |
26 | ![]() | 0XBDAD407F77F44F7DA6684B416B1951ECA461FB07-0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | $2,593.99 1.0324210 Eth | $531.71 503.066 0XBDAD407F77F44F7DA6684B416B1951ECA461FB07 | 0.4202% |
27 | ![]() | 0XBDAD407F77F44F7DA6684B416B1951ECA461FB07-0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | $2,579.35 1.0224950 Eth | $439.98 418.984 0XBDAD407F77F44F7DA6684B416B1951ECA461FB07 | 0.3500% |
28 | ![]() | 0XE22E3D44EA9FB0A87EA3F7A8F41D869C677F0020-0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | $2,570.60 1.0228280 Eth | $378.98 11,168.331 0XE22E3D44EA9FB0A87EA3F7A8F41D869C677F0020 | 9.3290% |
29 | ![]() | 0X95CEF13441BE50D20CA4558CC0A27B601AC544E5-0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | $2,573.71 1.0220610 Eth | $332.17 496.521 0X95CEF13441BE50D20CA4558CC0A27B601AC544E5 | 0.4147% |
30 | ![]() | 0X80137510979822322193FC997D400D5A6C747BF7-0X4200000000000000000000000000000000000006 | $2,582.12 1.0253080 Eth | $312.06 0.122 0X80137510979822322193FC997D400D5A6C747BF7 | 0.0001% |
31 | ![]() | 0X2416092F143378750BB29B79ED961AB195CCEEA5-0X80137510979822322193FC997D400D5A6C747BF7 | $2,603.44 1.0247070 Eth | $230.95 0.133 0X2416092F143378750BB29B79ED961AB195CCEEA5 | 0.0001% |
32 | ![]() | 0XB73603C5D87FA094B7314C74ACE2E64D165016FB-0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | $2,573.96 1.0241640 Eth | $217.69 216.292 0XB73603C5D87FA094B7314C74ACE2E64D165016FB | 0.1807% |
33 | ![]() | 0X95CEF13441BE50D20CA4558CC0A27B601AC544E5-0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | $2,571.70 1.0212630 Eth | $171.13 257.085 0X95CEF13441BE50D20CA4558CC0A27B601AC544E5 | 0.2147% |
34 | ![]() | 0XB73603C5D87FA094B7314C74ACE2E64D165016FB-0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | $2,584.75 1.0272230 Eth | $169.15 166.380 0XB73603C5D87FA094B7314C74ACE2E64D165016FB | 0.1390% |
35 | ![]() | 0XEC901DA9C68E90798BBBB74C11406A32A70652C3-0X0DC808ADCE2099A9F62AA87D9670745ABA741746 | $2,577.02 1.0233740 Eth | $152.04 0.059 0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | 0.0000% |
36 | ![]() | 0XEC901DA9C68E90798BBBB74C11406A32A70652C3-0X0DC808ADCE2099A9F62AA87D9670745ABA741746 | $2,571.79 1.0200670 Eth | $97.17 0.038 0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | 0.0000% |
37 | ![]() | 0XEC901DA9C68E90798BBBB74C11406A32A70652C3-0X0DC808ADCE2099A9F62AA87D9670745ABA741746 | $2,637.86 1.0249350 Eth | $91.74 0.035 0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | 0.0000% |
38 | ![]() | 0X93F4D0AB6A8B4271F4A28DB399B5E30612D21116-0XE5D7C2A44FFDDF6B295A15C148167DAAAF5CF34F | $2,576.74 1.0249280 Eth | $25.47 0.010 0X93F4D0AB6A8B4271F4A28DB399B5E30612D21116 | 0.0000% |
39 | ![]() | 0XCD5D6DE3FDBCE1895F0DAC13A065673599ED6806-0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | $2,583.25 1.0230680 Eth | $24.77 362.546 0XCD5D6DE3FDBCE1895F0DAC13A065673599ED6806 | 0.3028% |
40 | ![]() | 0X80137510979822322193FC997D400D5A6C747BF7-0X2170ED0880AC9A755FD29B2688956BD959F933F8 | $2,585.60 1.0255150 Eth | $19.41 0.008 0X80137510979822322193FC997D400D5A6C747BF7 | 0.0000% |
41 | ![]() | 0XEC901DA9C68E90798BBBB74C11406A32A70652C3-0X0DC808ADCE2099A9F62AA87D9670745ABA741746 | $2,573.03 1.0225670 Eth | $17.43 0.007 0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | 0.0000% |
42 | ![]() | 0X06EFDBFF2A14A7C8E15944D1F4A48F9F95F663A4-0X80137510979822322193FC997D400D5A6C747BF7 | $2,580.71 1.0256180 Eth | $14.76 14.643 0X06EFDBFF2A14A7C8E15944D1F4A48F9F95F663A4 | 0.0122% |
43 | ![]() | 0X95CEF13441BE50D20CA4558CC0A27B601AC544E5-0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | $2,749.33 1.0243840 Eth | $13.47 11.168 0X95CEF13441BE50D20CA4558CC0A27B601AC544E5 | 0.0093% |
44 | ![]() | 0X80137510979822322193FC997D400D5A6C747BF7-0X4200000000000000000000000000000000000006 | $2,588.47 1.0268320 Eth | $13.18 0.005 0X80137510979822322193FC997D400D5A6C747BF7 | 0.0000% |
45 | ![]() | 0XCD5D6DE3FDBCE1895F0DAC13A065673599ED6806-0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | $2,540.54 1.0035790 Eth | $9.47 141.457 0XCD5D6DE3FDBCE1895F0DAC13A065673599ED6806 | 0.1182% |
46 | ![]() | 0X93F4D0AB6A8B4271F4A28DB399B5E30612D21116-0XE5D7C2A44FFDDF6B295A15C148167DAAAF5CF34F | $2,604.03 1.0333480 Eth | $3.15 0.001 0X93F4D0AB6A8B4271F4A28DB399B5E30612D21116 | 0.0000% |
47 | ![]() | 0X93F4D0AB6A8B4271F4A28DB399B5E30612D21116-0X176211869CA2B568F2A7D4EE941E073A821EE1FF | $2,597.87 1.0328380 Eth | $1.28 0.000 0X93F4D0AB6A8B4271F4A28DB399B5E30612D21116 | 0.0000% |
48 | ![]() | 0XEC901DA9C68E90798BBBB74C11406A32A70652C3-0X0DC808ADCE2099A9F62AA87D9670745ABA741746 | $2,566.11 1.0190420 Eth | $1.18 0.000 0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | 0.0000% |
49 | ![]() | 0XEC901DA9C68E90798BBBB74C11406A32A70652C3-0X0DC808ADCE2099A9F62AA87D9670745ABA741746 | $2,578.58 1.0253030 Eth | $1.099 0.000 0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | 0.0000% |
50 | ![]() | 0XCD5D6DE3FDBCE1895F0DAC13A065673599ED6806-0XEC901DA9C68E90798BBBB74C11406A32A70652C3 | $2,522.83 1.0239910 Eth | $0.9943 14.697 0XCD5D6DE3FDBCE1895F0DAC13A065673599ED6806 | 0.0123% |
Contract Name:
Stone
Compiler Version
v0.8.21+commit.d9974bed
Optimization Enabled:
Yes with 10 runs
Other Settings:
shanghai EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity 0.8.21; import "@layerzerolabs/solidity-examples/contracts/token/oft/extension/BasedOFT.sol"; import {Minter} from "./Minter.sol"; contract Stone is BasedOFT { uint256 public constant DAY_INTERVAL = 24 * 60 * 60; address public minter; uint16 public constant PT_FEED = 1; uint16 public constant PT_SET_ENABLE = 2; uint16 public constant PT_SET_CAP = 3; uint256 public cap; bool public enable = true; mapping(uint256 => uint256) public quota; event FeedToChain( uint16 indexed dstChainId, address indexed from, bytes toAddress, uint price ); event SetCapFor(uint16 indexed dstChainId, bytes toAddress, uint cap); event SetEnableFor(uint16 indexed dstChainId, bytes toAddress, bool flag); constructor( address _minter, address _layerZeroEndpoint, uint256 _cap ) BasedOFT("StakeStone Ether", "STONE", _layerZeroEndpoint) { minter = _minter; cap = _cap; } modifier onlyMinter() { require(msg.sender == minter, "NM"); _; } function mint(address _to, uint256 _amount) external onlyMinter { _mint(_to, _amount); } function burn(address _from, uint256 _amount) external onlyMinter { _burn(_from, _amount); } function sendFrom( address _from, uint16 _dstChainId, bytes calldata _toAddress, uint _amount, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams ) public payable override(IOFTCore, OFTCore) { require(enable, "invalid"); uint256 id; assembly { id := chainid() } require(id != _dstChainId, "same chain"); uint256 day = block.timestamp / DAY_INTERVAL; require(_amount + quota[day] <= cap, "Exceed cap"); quota[day] = quota[day] + _amount; super.sendFrom( _from, _dstChainId, _toAddress, _amount, _refundAddress, _zroPaymentAddress, _adapterParams ); } function updatePrice( uint16 _dstChainId, bytes memory _toAddress ) external payable returns (uint256 price) { require(enable, "invalid"); uint256 id; assembly { id := chainid() } require(id != _dstChainId, "same chain"); price = tokenPrice(); bytes memory lzPayload = abi.encode( PT_FEED, _toAddress, price, block.timestamp ); _lzSend( _dstChainId, lzPayload, payable(msg.sender), address(0), bytes(""), msg.value ); emit FeedToChain(_dstChainId, msg.sender, _toAddress, price); } function setEnableFor( uint16 _dstChainId, bool _flag, bytes memory _toAddress ) external payable onlyOwner { uint256 id; assembly { id := chainid() } if (_dstChainId == id) { enable = _flag; emit SetEnableFor( _dstChainId, abi.encodePacked(address(this)), enable ); return; } bytes memory lzPayload = abi.encode(PT_SET_ENABLE, _toAddress, _flag); _lzSend( _dstChainId, lzPayload, payable(msg.sender), address(0), bytes(""), msg.value ); emit SetEnableFor(_dstChainId, _toAddress, _flag); } function setCapFor( uint16 _dstChainId, uint256 _cap, bytes memory _toAddress ) external payable onlyOwner { uint256 id; assembly { id := chainid() } if (_dstChainId == id) { cap = _cap; emit SetCapFor(_dstChainId, abi.encodePacked(address(this)), cap); return; } bytes memory lzPayload = abi.encode(PT_SET_CAP, _toAddress, _cap); _lzSend( _dstChainId, lzPayload, payable(msg.sender), address(0), bytes(""), msg.value ); emit SetCapFor(_dstChainId, _toAddress, _cap); } function tokenPrice() public returns (uint256 price) { price = Minter(minter).getTokenPrice(); } function getQuota() external view returns (uint256) { uint256 amount = quota[block.timestamp / DAY_INTERVAL]; if (cap > amount && enable) { return cap - amount; } } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.21; import {Stone} from "./Stone.sol"; import {StoneVault} from "../StoneVault.sol"; contract Minter { // TODO: governable upgrade address public stone; address payable public vault; modifier onlyVault() { require(msg.sender == vault, "not vault"); _; } constructor(address _stone, address payable _vault) { stone = _stone; vault = _vault; } function mint(address _to, uint256 _amount) external onlyVault { Stone(stone).mint(_to, _amount); } function burn(address _from, uint256 _amount) external onlyVault { Stone(stone).burn(_from, _amount); } function setNewVault(address _vault) external onlyVault { vault = payable(_vault); } function getTokenPrice() public returns (uint256 price) { price = StoneVault(vault).currentSharePrice(); } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.21; import {EnumerableSet} from "@openzeppelin/contracts/utils/structs/EnumerableSet.sol"; import {TransferHelper} from "@uniswap/v3-periphery/contracts/libraries/TransferHelper.sol"; import {Strategy} from "./Strategy.sol"; import {AssetsVault} from "../AssetsVault.sol"; contract StrategyController { using EnumerableSet for EnumerableSet.AddressSet; uint256 internal constant ONE_HUNDRED_PERCENT = 1e6; address public stoneVault; address payable public immutable assetsVault; EnumerableSet.AddressSet private strategies; mapping(address => uint256) public ratios; struct StrategyDiff { address strategy; bool isDeposit; uint256 amount; } modifier onlyVault() { require(stoneVault == msg.sender, "not vault"); _; } constructor( address payable _assetsVault, address[] memory _strategies, uint256[] memory _ratios ) { require(_assetsVault != address(0), "ZERO ADDRESS"); uint256 length = _strategies.length; for (uint256 i; i < length; i++) { require(_strategies[i] != address(0), "ZERO ADDRESS"); } stoneVault = msg.sender; assetsVault = _assetsVault; _initStrategies(_strategies, _ratios); } function onlyRebaseStrategies() external { _rebase(0, 0); } function forceWithdraw( uint256 _amount ) external onlyVault returns (uint256 actualAmount) { uint256 balanceBeforeRepay = address(this).balance; if (balanceBeforeRepay >= _amount) { _repayToVault(); actualAmount = balanceBeforeRepay; } else { actualAmount = _forceWithdraw(_amount - balanceBeforeRepay) + balanceBeforeRepay; } } function setStrategies( address[] memory _strategies, uint256[] memory _ratios ) external onlyVault { _setStrategies(_strategies, _ratios); } function addStrategy(address _strategy) external onlyVault { require(!strategies.contains(_strategy), "already exist"); strategies.add(_strategy); } function rebaseStrategies( uint256 _in, uint256 _out ) external payable onlyVault { _rebase(_in, _out); } function destroyStrategy(address _strategy) external onlyVault { _destoryStrategy(_strategy); } function _rebase(uint256 _in, uint256 _out) internal { require(_in == 0 || _out == 0, "only deposit or withdraw"); if (_in != 0) { AssetsVault(assetsVault).withdraw(address(this), _in); } uint256 total = getAllStrategyValidValue(); if (total < _out) { total = 0; } else { total = total + _in - _out; } uint256 length = strategies.length(); StrategyDiff[] memory diffs = new StrategyDiff[](length); uint256 head; uint256 tail = length - 1; for (uint i; i < length; i++) { address strategy = strategies.at(i); if (ratios[strategy] == 0) { _clearStrategy(strategy, true); continue; } uint256 newPosition = (total * ratios[strategy]) / ONE_HUNDRED_PERCENT; uint256 position = getStrategyValidValue(strategy); if (newPosition < position) { diffs[head] = StrategyDiff( strategy, false, position - newPosition ); head++; } else if (newPosition > position) { diffs[tail] = StrategyDiff( strategy, true, newPosition - position ); if (tail != 0) { tail--; } } } length = diffs.length; for (uint256 i; i < length; i++) { StrategyDiff memory diff = diffs[i]; if (diff.amount == 0) { continue; } if (diff.isDeposit) { if (address(this).balance < diff.amount) { diff.amount = address(this).balance; } _depositToStrategy(diff.strategy, diff.amount); } else { _withdrawFromStrategy(diff.strategy, diff.amount); } } _repayToVault(); } function _repayToVault() internal { if (address(this).balance != 0) { TransferHelper.safeTransferETH(assetsVault, address(this).balance); } } function _depositToStrategy(address _strategy, uint256 _amount) internal { Strategy(_strategy).deposit{value: _amount}(); } function _withdrawFromStrategy( address _strategy, uint256 _amount ) internal { Strategy(_strategy).withdraw(_amount); } function _forceWithdraw( uint256 _amount ) internal returns (uint256 actualAmount) { uint256 length = strategies.length(); for (uint i; i < length; i++) { address strategy = strategies.at(i); uint256 withAmount = (_amount * ratios[strategy]) / ONE_HUNDRED_PERCENT; if (withAmount != 0) { actualAmount = Strategy(strategy).instantWithdraw(withAmount) + actualAmount; } } _repayToVault(); } function getStrategyValue( address _strategy ) public returns (uint256 _value) { return Strategy(_strategy).getAllValue(); } function getStrategyValidValue( address _strategy ) public returns (uint256 _value) { return Strategy(_strategy).getInvestedValue(); } function getStrategyPendingValue( address _strategy ) public returns (uint256 _value) { return Strategy(_strategy).getPendingValue(); } function getAllStrategiesValue() public returns (uint256 _value) { uint256 length = strategies.length(); for (uint i; i < length; i++) { _value = _value + getStrategyValue(strategies.at(i)); } } function getAllStrategyValidValue() public returns (uint256 _value) { uint256 length = strategies.length(); for (uint i; i < length; i++) { _value = _value + getStrategyValidValue(strategies.at(i)); } } function getAllStrategyPendingValue() public returns (uint256 _value) { uint256 length = strategies.length(); for (uint i; i < length; i++) { _value = _value + getStrategyPendingValue(strategies.at(i)); } } function getStrategies() public view returns (address[] memory addrs, uint256[] memory portions) { uint256 length = strategies.length(); addrs = new address[](length); portions = new uint256[](length); for (uint256 i; i < length; i++) { address addr = strategies.at(i); addrs[i] = addr; portions[i] = ratios[addr]; } } function _initStrategies( address[] memory _strategies, uint256[] memory _ratios ) internal { require(_strategies.length == _ratios.length, "invalid length"); uint256 totalRatio; uint256 length = _strategies.length; for (uint i; i < length; i++) { strategies.add(_strategies[i]); ratios[_strategies[i]] = _ratios[i]; totalRatio = totalRatio + _ratios[i]; } require(totalRatio <= ONE_HUNDRED_PERCENT, "exceed 100%"); } function _setStrategies( address[] memory _strategies, uint256[] memory _ratios ) internal { uint256 length = _strategies.length; require(length == _ratios.length, "invalid length"); uint256 oldLength = strategies.length(); for (uint i; i < oldLength; i++) { ratios[strategies.at(i)] = 0; } uint256 totalRatio; for (uint i; i < length; i++) { require( Strategy(_strategies[i]).controller() == address(this), "controller mismatch" ); strategies.add(_strategies[i]); ratios[_strategies[i]] = _ratios[i]; totalRatio = totalRatio + _ratios[i]; } require(totalRatio <= ONE_HUNDRED_PERCENT, "exceed 100%"); } function clearStrategy(address _strategy) public onlyVault { _clearStrategy(_strategy, false); } function _clearStrategy(address _strategy, bool _isRebase) internal { Strategy(_strategy).clear(); if (!_isRebase) { _repayToVault(); } } function _destoryStrategy(address _strategy) internal { require(_couldDestroyStrategy(_strategy), "still active"); strategies.remove(_strategy); _repayToVault(); } function _couldDestroyStrategy( address _strategy ) internal returns (bool status) { return ratios[_strategy] == 0 && Strategy(_strategy).getAllValue() < 1e4; } function setNewVault(address _vault) external onlyVault { stoneVault = _vault; } receive() external payable {} }
// SPDX-License-Identifier: MIT pragma solidity 0.8.21; import {StrategyController} from "../strategies/StrategyController.sol"; abstract contract Strategy { address payable public immutable controller; address public governance; string public name; modifier onlyGovernance() { require(governance == msg.sender, "not governace"); _; } event TransferGovernance(address oldOwner, address newOwner); constructor(address payable _controller, string memory _name) { require(_controller != address(0), "ZERO ADDRESS"); governance = msg.sender; controller = _controller; name = _name; } modifier onlyController() { require(controller == msg.sender, "not controller"); _; } function deposit() public payable virtual onlyController {} function withdraw( uint256 _amount ) public virtual onlyController returns (uint256 actualAmount) {} function instantWithdraw( uint256 _amount ) public virtual onlyController returns (uint256 actualAmount) {} function clear() public virtual onlyController returns (uint256 amount) {} function execPendingRequest( uint256 _amount ) public virtual returns (uint256 amount) {} function getAllValue() public virtual returns (uint256 value) {} function getPendingValue() public virtual returns (uint256 value) {} function getInvestedValue() public virtual returns (uint256 value) {} function checkPendingStatus() public virtual returns (uint256 pending, uint256 executable) {} function setGovernance(address governance_) external onlyGovernance { emit TransferGovernance(governance, governance_); governance = governance_; } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.21; library VaultMath { uint256 internal constant DECIMALS = 18; function assetToShares( uint256 _assetAmount, uint256 _assetPerShare ) internal pure returns (uint256) { require(_assetPerShare > 1, "Vault Lib: invalid assetPerShare"); return (_assetAmount * (10 ** DECIMALS)) / _assetPerShare; } function sharesToAsset( uint256 _shares, uint256 _assetPerShare ) internal pure returns (uint256) { require(_assetPerShare > 1, "Vault Lib: invalid assetPerShare"); return (_shares * _assetPerShare) / (10 ** DECIMALS); } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.21; import {ReentrancyGuard} from "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol"; import {TransferHelper} from "@uniswap/v3-periphery/contracts/libraries/TransferHelper.sol"; import {Minter} from "./token/Minter.sol"; import {Stone} from "./token/Stone.sol"; import {AssetsVault} from "./AssetsVault.sol"; import {StrategyController} from "./strategies/StrategyController.sol"; import {VaultMath} from "./libraries/VaultMath.sol"; contract StoneVault is ReentrancyGuard, Ownable { uint256 internal constant MULTIPLIER = 1e18; uint256 internal constant ONE_HUNDRED_PERCENT = 1e6; uint256 internal constant MAXMIUM_FEE_RATE = ONE_HUNDRED_PERCENT / 100; // 1% uint256 internal constant MINIMUM_REBASE_INTERVAL = 7 * 24 * 60 * 60; uint256 public constant VERSION = 1; uint256 public rebaseTimeInterval = 24 * 60 * 60; address public immutable minter; address public immutable stone; address payable public immutable strategyController; address payable public immutable assetsVault; address public proposal; address public feeRecipient; uint256 public latestRoundID; uint256 public withdrawableAmountInPast; uint256 public withdrawingSharesInPast; uint256 public withdrawingSharesInRound; uint256 public withdrawFeeRate; uint256 public rebaseTime; mapping(uint256 => uint256) public roundPricePerShare; mapping(uint256 => uint256) public settlementTime; mapping(address => UserReceipt) public userReceipts; struct UserReceipt { uint256 withdrawRound; uint256 withdrawShares; uint256 withdrawableAmount; } event Deposit( address indexed account, uint256 amount, uint256 mint, uint256 round ); event InitiateWithdraw( address indexed account, uint256 shares, uint256 round ); event CancelWithdraw( address indexed account, uint256 amount, uint256 round ); event Withdrawn(address indexed account, uint256 amount, uint256 round); event WithdrawnFromStrategy( address indexed account, uint256 amount, uint256 actualAmount, uint256 round ); event RollToNextRound( uint256 round, uint256 vaultIn, uint256 vaultOut, uint256 sharePrice ); event StragetyAdded(address strategy); event StragetyDestroyed(address strategy); event StragetyCleared(address strategy); event PortfolioConfigUpdated(address[] strategies, uint256[] ratios); event FeeCharged(address indexed account, uint256 amount); event SetWithdrawFeeRate(uint256 oldRate, uint256 newRate); event SetFeeRecipient(address oldAddr, address newAddr); event SetRebaseInterval(uint256 interval); modifier onlyProposal() { require(proposal == msg.sender, "not proposal"); _; } constructor( address _minter, address _proposal, address payable _assetsVault, address[] memory _strategies, uint256[] memory _ratios ) { require( _minter != address(0) && _proposal != address(0) && _assetsVault != address(0), "ZERO ADDRESS" ); uint256 length = _strategies.length; for (uint256 i; i < length; i++) { require(_strategies[i] != address(0), "ZERO ADDRESS"); } minter = _minter; proposal = _proposal; assetsVault = _assetsVault; feeRecipient = msg.sender; StrategyController controller = new StrategyController( _assetsVault, _strategies, _ratios ); strategyController = payable(address(controller)); stone = Minter(_minter).stone(); roundPricePerShare[0] = MULTIPLIER; latestRoundID = 0; } function deposit() external payable nonReentrant returns (uint256 mintAmount) { mintAmount = _depositFor(msg.value, msg.sender); } function depositFor( address _user ) external payable nonReentrant returns (uint256 mintAmount) { mintAmount = _depositFor(msg.value, _user); } function _depositFor( uint256 _amount, address _user ) internal returns (uint256 mintAmount) { require(_amount != 0, "too small"); uint256 sharePrice; uint256 currSharePrice = currentSharePrice(); if (latestRoundID == 0) { sharePrice = MULTIPLIER; } else { uint256 latestSharePrice = roundPricePerShare[latestRoundID - 1]; sharePrice = latestSharePrice > currSharePrice ? latestSharePrice : currSharePrice; } mintAmount = (_amount * MULTIPLIER) / sharePrice; AssetsVault(assetsVault).deposit{value: address(this).balance}(); Minter(minter).mint(_user, mintAmount); emit Deposit(_user, _amount, mintAmount, latestRoundID); } function requestWithdraw(uint256 _shares) external nonReentrant { require(_shares != 0, "too small"); require(latestRoundID != 0, "should withdraw instantly"); Stone stoneToken = Stone(stone); Minter stoneMinter = Minter(minter); require(stoneToken.balanceOf(msg.sender) >= _shares, "exceed balance"); TransferHelper.safeTransferFrom( stone, msg.sender, address(this), _shares ); withdrawingSharesInRound = withdrawingSharesInRound + _shares; UserReceipt storage receipt = userReceipts[msg.sender]; if (receipt.withdrawRound == latestRoundID) { receipt.withdrawShares = receipt.withdrawShares + _shares; } else if (receipt.withdrawRound == 0) { receipt.withdrawShares = _shares; receipt.withdrawRound = latestRoundID; } else { // Withdraw previous round share first uint256 withdrawAmount = VaultMath.sharesToAsset( receipt.withdrawShares, roundPricePerShare[receipt.withdrawRound] ); stoneMinter.burn(address(this), receipt.withdrawShares); withdrawingSharesInPast = withdrawingSharesInPast - receipt.withdrawShares; receipt.withdrawShares = _shares; receipt.withdrawableAmount = receipt.withdrawableAmount + withdrawAmount; receipt.withdrawRound = latestRoundID; } emit InitiateWithdraw(msg.sender, _shares, latestRoundID); } function cancelWithdraw(uint256 _shares) external nonReentrant { require(_shares != 0, "too small"); UserReceipt storage receipt = userReceipts[msg.sender]; require(receipt.withdrawRound == latestRoundID, "no pending withdraw"); require(receipt.withdrawShares >= _shares, "exceed pending withdraw"); receipt.withdrawShares = receipt.withdrawShares - _shares; TransferHelper.safeTransfer(stone, msg.sender, _shares); if (receipt.withdrawShares == 0) { receipt.withdrawRound = 0; } withdrawingSharesInRound = withdrawingSharesInRound - _shares; emit CancelWithdraw(msg.sender, _shares, latestRoundID); } function instantWithdraw( uint256 _amount, uint256 _shares ) external nonReentrant returns (uint256 actualWithdrawn) { require(_amount != 0 || _shares != 0, "too small"); AssetsVault aVault = AssetsVault(assetsVault); Minter stoneMinter = Minter(minter); (uint256 idleAmount, ) = getVaultAvailableAmount(); if (_amount != 0) { UserReceipt storage receipt = userReceipts[msg.sender]; if ( receipt.withdrawRound != latestRoundID && receipt.withdrawRound != 0 ) { // Withdraw previous round share first uint256 withdrawAmount = VaultMath.sharesToAsset( receipt.withdrawShares, roundPricePerShare[receipt.withdrawRound] ); stoneMinter.burn(address(this), receipt.withdrawShares); withdrawingSharesInPast = withdrawingSharesInPast - receipt.withdrawShares; receipt.withdrawShares = 0; receipt.withdrawableAmount = receipt.withdrawableAmount + withdrawAmount; receipt.withdrawRound = 0; } require( receipt.withdrawableAmount >= _amount, "exceed withdrawable" ); receipt.withdrawableAmount = receipt.withdrawableAmount - _amount; withdrawableAmountInPast = withdrawableAmountInPast - _amount; actualWithdrawn = _amount; emit Withdrawn(msg.sender, _amount, latestRoundID); } if (_shares != 0) { uint256 sharePrice; if (latestRoundID == 0) { sharePrice = MULTIPLIER; } else { uint256 currSharePrice = currentSharePrice(); uint256 latestSharePrice = roundPricePerShare[ latestRoundID - 1 ]; sharePrice = latestSharePrice < currSharePrice ? latestSharePrice : currSharePrice; } uint256 ethAmount = VaultMath.sharesToAsset(_shares, sharePrice); stoneMinter.burn(msg.sender, _shares); if (ethAmount <= idleAmount) { actualWithdrawn = actualWithdrawn + ethAmount; emit Withdrawn(msg.sender, ethAmount, latestRoundID); } else { actualWithdrawn = actualWithdrawn + idleAmount; ethAmount = ethAmount - idleAmount; StrategyController controller = StrategyController( strategyController ); uint256 actualAmount = controller.forceWithdraw(ethAmount); actualWithdrawn = actualWithdrawn + actualAmount; emit WithdrawnFromStrategy( msg.sender, ethAmount, actualAmount, latestRoundID ); } } require(aVault.getBalance() >= actualWithdrawn, "still need wait"); uint256 withFee; if (withdrawFeeRate != 0) { withFee = (actualWithdrawn * withdrawFeeRate) / ONE_HUNDRED_PERCENT; aVault.withdraw(feeRecipient, withFee); emit FeeCharged(msg.sender, withFee); } aVault.withdraw(msg.sender, actualWithdrawn - withFee); } function rollToNextRound() external { require( block.timestamp > rebaseTime + rebaseTimeInterval, "already rebased" ); StrategyController controller = StrategyController(strategyController); AssetsVault aVault = AssetsVault(assetsVault); uint256 previewSharePrice = currentSharePrice(); uint256 vaultBalance = aVault.getBalance(); uint256 amountToWithdraw = VaultMath.sharesToAsset( withdrawingSharesInRound, previewSharePrice ); uint256 amountVaultNeed = withdrawableAmountInPast + amountToWithdraw; uint256 allPendingValue = controller.getAllStrategyPendingValue(); uint256 vaultIn; uint256 vaultOut; if (vaultBalance > amountVaultNeed) { vaultIn = vaultBalance - amountVaultNeed; } else if (vaultBalance + allPendingValue < amountVaultNeed) { vaultOut = amountVaultNeed - vaultBalance - allPendingValue; } controller.rebaseStrategies(vaultIn, vaultOut); uint256 newSharePrice = currentSharePrice(); roundPricePerShare[latestRoundID] = previewSharePrice < newSharePrice ? previewSharePrice : newSharePrice; settlementTime[latestRoundID] = block.timestamp; latestRoundID = latestRoundID + 1; withdrawingSharesInPast = withdrawingSharesInPast + withdrawingSharesInRound; withdrawableAmountInPast = withdrawableAmountInPast + VaultMath.sharesToAsset(withdrawingSharesInRound, newSharePrice); withdrawingSharesInRound = 0; rebaseTime = block.timestamp; emit RollToNextRound(latestRoundID, vaultIn, vaultOut, newSharePrice); } function addStrategy(address _strategy) external onlyProposal { StrategyController controller = StrategyController(strategyController); controller.addStrategy(_strategy); emit StragetyAdded(_strategy); } function destroyStrategy(address _strategy) external onlyOwner { StrategyController controller = StrategyController(strategyController); controller.destroyStrategy(_strategy); emit StragetyDestroyed(_strategy); } function clearStrategy(address _strategy) external onlyOwner { StrategyController controller = StrategyController(strategyController); controller.clearStrategy(_strategy); emit StragetyCleared(_strategy); } function updatePortfolioConfig( address[] memory _strategies, uint256[] memory _ratios ) external onlyProposal { StrategyController controller = StrategyController(strategyController); controller.setStrategies(_strategies, _ratios); emit PortfolioConfigUpdated(_strategies, _ratios); } function updateProposal(address _proposal) external onlyProposal { proposal = _proposal; } function migrateVault(address _vault) external onlyProposal { Minter(minter).setNewVault(_vault); AssetsVault(assetsVault).setNewVault(_vault); StrategyController(strategyController).setNewVault(_vault); } function currentSharePrice() public returns (uint256 price) { Stone stoneToken = Stone(stone); uint256 totalStone = stoneToken.totalSupply(); if ( latestRoundID == 0 || totalStone == 0 || totalStone == withdrawingSharesInPast ) { return MULTIPLIER; } uint256 etherAmount = AssetsVault(assetsVault).getBalance() + StrategyController(strategyController).getAllStrategiesValue() - withdrawableAmountInPast; uint256 activeShare = totalStone - withdrawingSharesInPast; return (etherAmount * MULTIPLIER) / activeShare; } function getVaultAvailableAmount() public returns (uint256 idleAmount, uint256 investedAmount) { AssetsVault vault = AssetsVault(assetsVault); if (vault.getBalance() > withdrawableAmountInPast) { idleAmount = vault.getBalance() - withdrawableAmountInPast; } investedAmount = StrategyController(strategyController) .getAllStrategyValidValue(); } function setWithdrawFeeRate(uint256 _withdrawFeeRate) external onlyOwner { require(_withdrawFeeRate <= MAXMIUM_FEE_RATE, "exceed maximum"); emit SetWithdrawFeeRate(withdrawFeeRate, _withdrawFeeRate); withdrawFeeRate = _withdrawFeeRate; } function setFeeRecipient(address _feeRecipient) external onlyOwner { require(_feeRecipient != address(0), "zero address"); emit SetFeeRecipient(feeRecipient, _feeRecipient); feeRecipient = _feeRecipient; } function setRebaseInterval(uint256 _interval) external onlyOwner { require(_interval <= MINIMUM_REBASE_INTERVAL, "invalid"); rebaseTimeInterval = _interval; emit SetRebaseInterval(rebaseTimeInterval); } receive() external payable {} }
// SPDX-License-Identifier: MIT pragma solidity 0.8.21; import {TransferHelper} from "@uniswap/v3-periphery/contracts/libraries/TransferHelper.sol"; contract AssetsVault { address public stoneVault; address public strategyController; modifier onlyPermit() { require( stoneVault == msg.sender || strategyController == msg.sender, "not permit" ); _; } constructor(address _stoneVault, address _strategyController) { require( _stoneVault != address(0) && _strategyController != address(0), "ZERO ADDRESS" ); stoneVault = _stoneVault; strategyController = _strategyController; } function deposit() external payable { require(msg.value != 0, "too small"); } function withdraw(address _to, uint256 _amount) external onlyPermit { TransferHelper.safeTransferETH(_to, _amount); } function setNewVault(address _vault) external onlyPermit { stoneVault = _vault; } function getBalance() external view returns (uint256 amount) { amount = address(this).balance; } receive() external payable {} }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.6.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; library TransferHelper { /// @notice Transfers tokens from the targeted address to the given destination /// @notice Errors with 'STF' if transfer fails /// @param token The contract address of the token to be transferred /// @param from The originating address from which the tokens will be transferred /// @param to The destination address of the transfer /// @param value The amount to be transferred function safeTransferFrom( address token, address from, address to, uint256 value ) internal { (bool success, bytes memory data) = token.call(abi.encodeWithSelector(IERC20.transferFrom.selector, from, to, value)); require(success && (data.length == 0 || abi.decode(data, (bool))), 'STF'); } /// @notice Transfers tokens from msg.sender to a recipient /// @dev Errors with ST if transfer fails /// @param token The contract address of the token which will be transferred /// @param to The recipient of the transfer /// @param value The value of the transfer function safeTransfer( address token, address to, uint256 value ) internal { (bool success, bytes memory data) = token.call(abi.encodeWithSelector(IERC20.transfer.selector, to, value)); require(success && (data.length == 0 || abi.decode(data, (bool))), 'ST'); } /// @notice Approves the stipulated contract to spend the given allowance in the given token /// @dev Errors with 'SA' if transfer fails /// @param token The contract address of the token to be approved /// @param to The target of the approval /// @param value The amount of the given token the target will be allowed to spend function safeApprove( address token, address to, uint256 value ) internal { (bool success, bytes memory data) = token.call(abi.encodeWithSelector(IERC20.approve.selector, to, value)); require(success && (data.length == 0 || abi.decode(data, (bool))), 'SA'); } /// @notice Transfers ETH to the recipient address /// @dev Fails with `STE` /// @param to The destination of the transfer /// @param value The value to be transferred function safeTransferETH(address to, uint256 value) internal { (bool success, ) = to.call{value: value}(new bytes(0)); require(success, 'STE'); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (utils/structs/EnumerableSet.sol) // This file was procedurally generated from scripts/generate/templates/EnumerableSet.js. pragma solidity ^0.8.0; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ```solidity * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) * and `uint256` (`UintSet`) are supported. * * [WARNING] * ==== * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure * unusable. * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info. * * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an * array of EnumerableSet. * ==== */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping(bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; if (lastIndex != toDeleteIndex) { bytes32 lastValue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastValue; // Update the index for the moved value set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex } // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { return set._values[index]; } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function _values(Set storage set) private view returns (bytes32[] memory) { return set._values; } // Bytes32Set struct Bytes32Set { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } /** * @dev Returns the number of values in the set. O(1). */ function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(Bytes32Set storage set) internal view returns (bytes32[] memory) { bytes32[] memory store = _values(set._inner); bytes32[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(AddressSet storage set) internal view returns (address[] memory) { bytes32[] memory store = _values(set._inner); address[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values in the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(UintSet storage set) internal view returns (uint256[] memory) { bytes32[] memory store = _values(set._inner); uint256[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address from, address to, uint256 amount) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.0; import "./IERC20.sol"; import "./extensions/IERC20Metadata.sol"; import "../../utils/Context.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * The default value of {decimals} is 18. To change this, you should override * this function so it returns a different value. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the default value returned by this function, unless * it's overridden. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `to` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address to, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _transfer(owner, to, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on * `transferFrom`. This is semantically equivalent to an infinite approval. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _approve(owner, spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * NOTE: Does not update the allowance if the current allowance * is the maximum `uint256`. * * Requirements: * * - `from` and `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. * - the caller must have allowance for ``from``'s tokens of at least * `amount`. */ function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) { address spender = _msgSender(); _spendAllowance(from, spender, amount); _transfer(from, to, amount); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { address owner = _msgSender(); _approve(owner, spender, allowance(owner, spender) + addedValue); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { address owner = _msgSender(); uint256 currentAllowance = allowance(owner, spender); require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(owner, spender, currentAllowance - subtractedValue); } return true; } /** * @dev Moves `amount` of tokens from `from` to `to`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. */ function _transfer(address from, address to, uint256 amount) internal virtual { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(from, to, amount); uint256 fromBalance = _balances[from]; require(fromBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[from] = fromBalance - amount; // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by // decrementing then incrementing. _balances[to] += amount; } emit Transfer(from, to, amount); _afterTokenTransfer(from, to, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; unchecked { // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above. _balances[account] += amount; } emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; // Overflow not possible: amount <= accountBalance <= totalSupply. _totalSupply -= amount; } emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Updates `owner` s allowance for `spender` based on spent `amount`. * * Does not update the allowance amount in case of infinite allowance. * Revert if not enough allowance is available. * * Might emit an {Approval} event. */ function _spendAllowance(address owner, address spender, uint256 amount) internal virtual { uint256 currentAllowance = allowance(owner, spender); if (currentAllowance != type(uint256).max) { require(currentAllowance >= amount, "ERC20: insufficient allowance"); unchecked { _approve(owner, spender, currentAllowance - amount); } } } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { _nonReentrantBefore(); _; _nonReentrantAfter(); } function _nonReentrantBefore() private { // On the first call to nonReentrant, _status will be _NOT_ENTERED require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; } function _nonReentrantAfter() private { // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } /** * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a * `nonReentrant` function in the call stack. */ function _reentrancyGuardEntered() internal view returns (bool) { return _status == _ENTERED; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity >=0.7.6; library ExcessivelySafeCall { uint256 constant LOW_28_MASK = 0x00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff; /// @notice Use when you _really_ really _really_ don't trust the called /// contract. This prevents the called contract from causing reversion of /// the caller in as many ways as we can. /// @dev The main difference between this and a solidity low-level call is /// that we limit the number of bytes that the callee can cause to be /// copied to caller memory. This prevents stupid things like malicious /// contracts returning 10,000,000 bytes causing a local OOG when copying /// to memory. /// @param _target The address to call /// @param _gas The amount of gas to forward to the remote contract /// @param _maxCopy The maximum number of bytes of returndata to copy /// to memory. /// @param _calldata The data to send to the remote contract /// @return success and returndata, as `.call()`. Returndata is capped to /// `_maxCopy` bytes. function excessivelySafeCall( address _target, uint256 _gas, uint16 _maxCopy, bytes memory _calldata ) internal returns (bool, bytes memory) { // set up for assembly call uint256 _toCopy; bool _success; bytes memory _returnData = new bytes(_maxCopy); // dispatch message to recipient // by assembly calling "handle" function // we call via assembly to avoid memcopying a very large returndata // returned by a malicious contract assembly { _success := call( _gas, // gas _target, // recipient 0, // ether value add(_calldata, 0x20), // inloc mload(_calldata), // inlen 0, // outloc 0 // outlen ) // limit our copy to 256 bytes _toCopy := returndatasize() if gt(_toCopy, _maxCopy) { _toCopy := _maxCopy } // Store the length of the copied bytes mstore(_returnData, _toCopy) // copy the bytes from returndata[0:_toCopy] returndatacopy(add(_returnData, 0x20), 0, _toCopy) } return (_success, _returnData); } /// @notice Use when you _really_ really _really_ don't trust the called /// contract. This prevents the called contract from causing reversion of /// the caller in as many ways as we can. /// @dev The main difference between this and a solidity low-level call is /// that we limit the number of bytes that the callee can cause to be /// copied to caller memory. This prevents stupid things like malicious /// contracts returning 10,000,000 bytes causing a local OOG when copying /// to memory. /// @param _target The address to call /// @param _gas The amount of gas to forward to the remote contract /// @param _maxCopy The maximum number of bytes of returndata to copy /// to memory. /// @param _calldata The data to send to the remote contract /// @return success and returndata, as `.call()`. Returndata is capped to /// `_maxCopy` bytes. function excessivelySafeStaticCall( address _target, uint256 _gas, uint16 _maxCopy, bytes memory _calldata ) internal view returns (bool, bytes memory) { // set up for assembly call uint256 _toCopy; bool _success; bytes memory _returnData = new bytes(_maxCopy); // dispatch message to recipient // by assembly calling "handle" function // we call via assembly to avoid memcopying a very large returndata // returned by a malicious contract assembly { _success := staticcall( _gas, // gas _target, // recipient add(_calldata, 0x20), // inloc mload(_calldata), // inlen 0, // outloc 0 // outlen ) // limit our copy to 256 bytes _toCopy := returndatasize() if gt(_toCopy, _maxCopy) { _toCopy := _maxCopy } // Store the length of the copied bytes mstore(_returnData, _toCopy) // copy the bytes from returndata[0:_toCopy] returndatacopy(add(_returnData, 0x20), 0, _toCopy) } return (_success, _returnData); } /** * @notice Swaps function selectors in encoded contract calls * @dev Allows reuse of encoded calldata for functions with identical * argument types but different names. It simply swaps out the first 4 bytes * for the new selector. This function modifies memory in place, and should * only be used with caution. * @param _newSelector The new 4-byte selector * @param _buf The encoded contract args */ function swapSelector(bytes4 _newSelector, bytes memory _buf) internal pure { require(_buf.length >= 4); uint256 _mask = LOW_28_MASK; assembly { // load the first word of let _word := mload(add(_buf, 0x20)) // mask out the top 4 bytes // /x _word := and(_word, _mask) _word := or(_newSelector, _word) mstore(add(_buf, 0x20), _word) } } }
// SPDX-License-Identifier: Unlicense /* * @title Solidity Bytes Arrays Utils * @author Gonçalo Sá <[email protected]> * * @dev Bytes tightly packed arrays utility library for ethereum contracts written in Solidity. * The library lets you concatenate, slice and type cast bytes arrays both in memory and storage. */ pragma solidity >=0.8.0 <0.9.0; library BytesLib { function concat( bytes memory _preBytes, bytes memory _postBytes ) internal pure returns (bytes memory) { bytes memory tempBytes; assembly { // Get a location of some free memory and store it in tempBytes as // Solidity does for memory variables. tempBytes := mload(0x40) // Store the length of the first bytes array at the beginning of // the memory for tempBytes. let length := mload(_preBytes) mstore(tempBytes, length) // Maintain a memory counter for the current write location in the // temp bytes array by adding the 32 bytes for the array length to // the starting location. let mc := add(tempBytes, 0x20) // Stop copying when the memory counter reaches the length of the // first bytes array. let end := add(mc, length) for { // Initialize a copy counter to the start of the _preBytes data, // 32 bytes into its memory. let cc := add(_preBytes, 0x20) } lt(mc, end) { // Increase both counters by 32 bytes each iteration. mc := add(mc, 0x20) cc := add(cc, 0x20) } { // Write the _preBytes data into the tempBytes memory 32 bytes // at a time. mstore(mc, mload(cc)) } // Add the length of _postBytes to the current length of tempBytes // and store it as the new length in the first 32 bytes of the // tempBytes memory. length := mload(_postBytes) mstore(tempBytes, add(length, mload(tempBytes))) // Move the memory counter back from a multiple of 0x20 to the // actual end of the _preBytes data. mc := end // Stop copying when the memory counter reaches the new combined // length of the arrays. end := add(mc, length) for { let cc := add(_postBytes, 0x20) } lt(mc, end) { mc := add(mc, 0x20) cc := add(cc, 0x20) } { mstore(mc, mload(cc)) } // Update the free-memory pointer by padding our last write location // to 32 bytes: add 31 bytes to the end of tempBytes to move to the // next 32 byte block, then round down to the nearest multiple of // 32. If the sum of the length of the two arrays is zero then add // one before rounding down to leave a blank 32 bytes (the length block with 0). mstore(0x40, and( add(add(end, iszero(add(length, mload(_preBytes)))), 31), not(31) // Round down to the nearest 32 bytes. )) } return tempBytes; } function concatStorage(bytes storage _preBytes, bytes memory _postBytes) internal { assembly { // Read the first 32 bytes of _preBytes storage, which is the length // of the array. (We don't need to use the offset into the slot // because arrays use the entire slot.) let fslot := sload(_preBytes.slot) // Arrays of 31 bytes or less have an even value in their slot, // while longer arrays have an odd value. The actual length is // the slot divided by two for odd values, and the lowest order // byte divided by two for even values. // If the slot is even, bitwise and the slot with 255 and divide by // two to get the length. If the slot is odd, bitwise and the slot // with -1 and divide by two. let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2) let mlength := mload(_postBytes) let newlength := add(slength, mlength) // slength can contain both the length and contents of the array // if length < 32 bytes so let's prepare for that // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage switch add(lt(slength, 32), lt(newlength, 32)) case 2 { // Since the new array still fits in the slot, we just need to // update the contents of the slot. // uint256(bytes_storage) = uint256(bytes_storage) + uint256(bytes_memory) + new_length sstore( _preBytes.slot, // all the modifications to the slot are inside this // next block add( // we can just add to the slot contents because the // bytes we want to change are the LSBs fslot, add( mul( div( // load the bytes from memory mload(add(_postBytes, 0x20)), // zero all bytes to the right exp(0x100, sub(32, mlength)) ), // and now shift left the number of bytes to // leave space for the length in the slot exp(0x100, sub(32, newlength)) ), // increase length by the double of the memory // bytes length mul(mlength, 2) ) ) ) } case 1 { // The stored value fits in the slot, but the combined value // will exceed it. // get the keccak hash to get the contents of the array mstore(0x0, _preBytes.slot) let sc := add(keccak256(0x0, 0x20), div(slength, 32)) // save new length sstore(_preBytes.slot, add(mul(newlength, 2), 1)) // The contents of the _postBytes array start 32 bytes into // the structure. Our first read should obtain the `submod` // bytes that can fit into the unused space in the last word // of the stored array. To get this, we read 32 bytes starting // from `submod`, so the data we read overlaps with the array // contents by `submod` bytes. Masking the lowest-order // `submod` bytes allows us to add that value directly to the // stored value. let submod := sub(32, slength) let mc := add(_postBytes, submod) let end := add(_postBytes, mlength) let mask := sub(exp(0x100, submod), 1) sstore( sc, add( and( fslot, 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff00 ), and(mload(mc), mask) ) ) for { mc := add(mc, 0x20) sc := add(sc, 1) } lt(mc, end) { sc := add(sc, 1) mc := add(mc, 0x20) } { sstore(sc, mload(mc)) } mask := exp(0x100, sub(mc, end)) sstore(sc, mul(div(mload(mc), mask), mask)) } default { // get the keccak hash to get the contents of the array mstore(0x0, _preBytes.slot) // Start copying to the last used word of the stored array. let sc := add(keccak256(0x0, 0x20), div(slength, 32)) // save new length sstore(_preBytes.slot, add(mul(newlength, 2), 1)) // Copy over the first `submod` bytes of the new data as in // case 1 above. let slengthmod := mod(slength, 32) let mlengthmod := mod(mlength, 32) let submod := sub(32, slengthmod) let mc := add(_postBytes, submod) let end := add(_postBytes, mlength) let mask := sub(exp(0x100, submod), 1) sstore(sc, add(sload(sc), and(mload(mc), mask))) for { sc := add(sc, 1) mc := add(mc, 0x20) } lt(mc, end) { sc := add(sc, 1) mc := add(mc, 0x20) } { sstore(sc, mload(mc)) } mask := exp(0x100, sub(mc, end)) sstore(sc, mul(div(mload(mc), mask), mask)) } } } function slice( bytes memory _bytes, uint256 _start, uint256 _length ) internal pure returns (bytes memory) { require(_length + 31 >= _length, "slice_overflow"); require(_bytes.length >= _start + _length, "slice_outOfBounds"); bytes memory tempBytes; assembly { switch iszero(_length) case 0 { // Get a location of some free memory and store it in tempBytes as // Solidity does for memory variables. tempBytes := mload(0x40) // The first word of the slice result is potentially a partial // word read from the original array. To read it, we calculate // the length of that partial word and start copying that many // bytes into the array. The first word we copy will start with // data we don't care about, but the last `lengthmod` bytes will // land at the beginning of the contents of the new array. When // we're done copying, we overwrite the full first word with // the actual length of the slice. let lengthmod := and(_length, 31) // The multiplication in the next line is necessary // because when slicing multiples of 32 bytes (lengthmod == 0) // the following copy loop was copying the origin's length // and then ending prematurely not copying everything it should. let mc := add(add(tempBytes, lengthmod), mul(0x20, iszero(lengthmod))) let end := add(mc, _length) for { // The multiplication in the next line has the same exact purpose // as the one above. let cc := add(add(add(_bytes, lengthmod), mul(0x20, iszero(lengthmod))), _start) } lt(mc, end) { mc := add(mc, 0x20) cc := add(cc, 0x20) } { mstore(mc, mload(cc)) } mstore(tempBytes, _length) //update free-memory pointer //allocating the array padded to 32 bytes like the compiler does now mstore(0x40, and(add(mc, 31), not(31))) } //if we want a zero-length slice let's just return a zero-length array default { tempBytes := mload(0x40) //zero out the 32 bytes slice we are about to return //we need to do it because Solidity does not garbage collect mstore(tempBytes, 0) mstore(0x40, add(tempBytes, 0x20)) } } return tempBytes; } function toAddress(bytes memory _bytes, uint256 _start) internal pure returns (address) { require(_bytes.length >= _start + 20, "toAddress_outOfBounds"); address tempAddress; assembly { tempAddress := div(mload(add(add(_bytes, 0x20), _start)), 0x1000000000000000000000000) } return tempAddress; } function toUint8(bytes memory _bytes, uint256 _start) internal pure returns (uint8) { require(_bytes.length >= _start + 1 , "toUint8_outOfBounds"); uint8 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x1), _start)) } return tempUint; } function toUint16(bytes memory _bytes, uint256 _start) internal pure returns (uint16) { require(_bytes.length >= _start + 2, "toUint16_outOfBounds"); uint16 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x2), _start)) } return tempUint; } function toUint32(bytes memory _bytes, uint256 _start) internal pure returns (uint32) { require(_bytes.length >= _start + 4, "toUint32_outOfBounds"); uint32 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x4), _start)) } return tempUint; } function toUint64(bytes memory _bytes, uint256 _start) internal pure returns (uint64) { require(_bytes.length >= _start + 8, "toUint64_outOfBounds"); uint64 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x8), _start)) } return tempUint; } function toUint96(bytes memory _bytes, uint256 _start) internal pure returns (uint96) { require(_bytes.length >= _start + 12, "toUint96_outOfBounds"); uint96 tempUint; assembly { tempUint := mload(add(add(_bytes, 0xc), _start)) } return tempUint; } function toUint128(bytes memory _bytes, uint256 _start) internal pure returns (uint128) { require(_bytes.length >= _start + 16, "toUint128_outOfBounds"); uint128 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x10), _start)) } return tempUint; } function toUint256(bytes memory _bytes, uint256 _start) internal pure returns (uint256) { require(_bytes.length >= _start + 32, "toUint256_outOfBounds"); uint256 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x20), _start)) } return tempUint; } function toBytes32(bytes memory _bytes, uint256 _start) internal pure returns (bytes32) { require(_bytes.length >= _start + 32, "toBytes32_outOfBounds"); bytes32 tempBytes32; assembly { tempBytes32 := mload(add(add(_bytes, 0x20), _start)) } return tempBytes32; } function equal(bytes memory _preBytes, bytes memory _postBytes) internal pure returns (bool) { bool success = true; assembly { let length := mload(_preBytes) // if lengths don't match the arrays are not equal switch eq(length, mload(_postBytes)) case 1 { // cb is a circuit breaker in the for loop since there's // no said feature for inline assembly loops // cb = 1 - don't breaker // cb = 0 - break let cb := 1 let mc := add(_preBytes, 0x20) let end := add(mc, length) for { let cc := add(_postBytes, 0x20) // the next line is the loop condition: // while(uint256(mc < end) + cb == 2) } eq(add(lt(mc, end), cb), 2) { mc := add(mc, 0x20) cc := add(cc, 0x20) } { // if any of these checks fails then arrays are not equal if iszero(eq(mload(mc), mload(cc))) { // unsuccess: success := 0 cb := 0 } } } default { // unsuccess: success := 0 } } return success; } function equalStorage( bytes storage _preBytes, bytes memory _postBytes ) internal view returns (bool) { bool success = true; assembly { // we know _preBytes_offset is 0 let fslot := sload(_preBytes.slot) // Decode the length of the stored array like in concatStorage(). let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2) let mlength := mload(_postBytes) // if lengths don't match the arrays are not equal switch eq(slength, mlength) case 1 { // slength can contain both the length and contents of the array // if length < 32 bytes so let's prepare for that // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage if iszero(iszero(slength)) { switch lt(slength, 32) case 1 { // blank the last byte which is the length fslot := mul(div(fslot, 0x100), 0x100) if iszero(eq(fslot, mload(add(_postBytes, 0x20)))) { // unsuccess: success := 0 } } default { // cb is a circuit breaker in the for loop since there's // no said feature for inline assembly loops // cb = 1 - don't breaker // cb = 0 - break let cb := 1 // get the keccak hash to get the contents of the array mstore(0x0, _preBytes.slot) let sc := keccak256(0x0, 0x20) let mc := add(_postBytes, 0x20) let end := add(mc, mlength) // the next line is the loop condition: // while(uint256(mc < end) + cb == 2) for {} eq(add(lt(mc, end), cb), 2) { sc := add(sc, 1) mc := add(mc, 0x20) } { if iszero(eq(sload(sc), mload(mc))) { // unsuccess: success := 0 cb := 0 } } } } } default { // unsuccess: success := 0 } } return success; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../OFT.sol"; contract BasedOFT is OFT { constructor(string memory _name, string memory _symbol, address _lzEndpoint) OFT(_name, _symbol, _lzEndpoint) {} function circulatingSupply() public view virtual override returns (uint) { unchecked { return totalSupply() - balanceOf(address(this)); } } function _debitFrom(address _from, uint16, bytes memory, uint _amount) internal virtual override returns(uint) { address spender = _msgSender(); if (_from != spender) _spendAllowance(_from, spender, _amount); _transfer(_from, address(this), _amount); return _amount; } function _creditTo(uint16, address _toAddress, uint _amount) internal virtual override returns(uint) { _transfer(address(this), _toAddress, _amount); return _amount; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../../lzApp/NonblockingLzApp.sol"; import "./IOFTCore.sol"; import "@openzeppelin/contracts/utils/introspection/ERC165.sol"; abstract contract OFTCore is NonblockingLzApp, ERC165, IOFTCore { using BytesLib for bytes; uint public constant NO_EXTRA_GAS = 0; // packet type uint16 public constant PT_SEND = 0; bool public useCustomAdapterParams; constructor(address _lzEndpoint) NonblockingLzApp(_lzEndpoint) {} function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IOFTCore).interfaceId || super.supportsInterface(interfaceId); } function estimateSendFee(uint16 _dstChainId, bytes calldata _toAddress, uint _amount, bool _useZro, bytes calldata _adapterParams) public view virtual override returns (uint nativeFee, uint zroFee) { // mock the payload for sendFrom() bytes memory payload = abi.encode(PT_SEND, _toAddress, _amount); return lzEndpoint.estimateFees(_dstChainId, address(this), payload, _useZro, _adapterParams); } function sendFrom(address _from, uint16 _dstChainId, bytes calldata _toAddress, uint _amount, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams) public payable virtual override { _send(_from, _dstChainId, _toAddress, _amount, _refundAddress, _zroPaymentAddress, _adapterParams); } function setUseCustomAdapterParams(bool _useCustomAdapterParams) public virtual onlyOwner { useCustomAdapterParams = _useCustomAdapterParams; emit SetUseCustomAdapterParams(_useCustomAdapterParams); } function _nonblockingLzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) internal virtual override { uint16 packetType; assembly { packetType := mload(add(_payload, 32)) } if (packetType == PT_SEND) { _sendAck(_srcChainId, _srcAddress, _nonce, _payload); } else { revert("OFTCore: unknown packet type"); } } function _send(address _from, uint16 _dstChainId, bytes memory _toAddress, uint _amount, address payable _refundAddress, address _zroPaymentAddress, bytes memory _adapterParams) internal virtual { _checkAdapterParams(_dstChainId, PT_SEND, _adapterParams, NO_EXTRA_GAS); uint amount = _debitFrom(_from, _dstChainId, _toAddress, _amount); bytes memory lzPayload = abi.encode(PT_SEND, _toAddress, amount); _lzSend(_dstChainId, lzPayload, _refundAddress, _zroPaymentAddress, _adapterParams, msg.value); emit SendToChain(_dstChainId, _from, _toAddress, amount); } function _sendAck(uint16 _srcChainId, bytes memory, uint64, bytes memory _payload) internal virtual { (, bytes memory toAddressBytes, uint amount) = abi.decode(_payload, (uint16, bytes, uint)); address to = toAddressBytes.toAddress(0); amount = _creditTo(_srcChainId, to, amount); emit ReceiveFromChain(_srcChainId, to, amount); } function _checkAdapterParams(uint16 _dstChainId, uint16 _pkType, bytes memory _adapterParams, uint _extraGas) internal virtual { if (useCustomAdapterParams) { _checkGasLimit(_dstChainId, _pkType, _adapterParams, _extraGas); } else { require(_adapterParams.length == 0, "OFTCore: _adapterParams must be empty."); } } function _debitFrom(address _from, uint16 _dstChainId, bytes memory _toAddress, uint _amount) internal virtual returns(uint); function _creditTo(uint16 _srcChainId, address _toAddress, uint _amount) internal virtual returns(uint); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import "@openzeppelin/contracts/utils/introspection/IERC165.sol"; import "./IOFT.sol"; import "./OFTCore.sol"; // override decimal() function is needed contract OFT is OFTCore, ERC20, IOFT { constructor(string memory _name, string memory _symbol, address _lzEndpoint) ERC20(_name, _symbol) OFTCore(_lzEndpoint) {} function supportsInterface(bytes4 interfaceId) public view virtual override(OFTCore, IERC165) returns (bool) { return interfaceId == type(IOFT).interfaceId || interfaceId == type(IERC20).interfaceId || super.supportsInterface(interfaceId); } function token() public view virtual override returns (address) { return address(this); } function circulatingSupply() public view virtual override returns (uint) { return totalSupply(); } function _debitFrom(address _from, uint16, bytes memory, uint _amount) internal virtual override returns(uint) { address spender = _msgSender(); if (_from != spender) _spendAllowance(_from, spender, _amount); _burn(_from, _amount); return _amount; } function _creditTo(uint16, address _toAddress, uint _amount) internal virtual override returns(uint) { _mint(_toAddress, _amount); return _amount; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.5.0; import "@openzeppelin/contracts/utils/introspection/IERC165.sol"; /** * @dev Interface of the IOFT core standard */ interface IOFTCore is IERC165 { /** * @dev estimate send token `_tokenId` to (`_dstChainId`, `_toAddress`) * _dstChainId - L0 defined chain id to send tokens too * _toAddress - dynamic bytes array which contains the address to whom you are sending tokens to on the dstChain * _amount - amount of the tokens to transfer * _useZro - indicates to use zro to pay L0 fees * _adapterParam - flexible bytes array to indicate messaging adapter services in L0 */ function estimateSendFee(uint16 _dstChainId, bytes calldata _toAddress, uint _amount, bool _useZro, bytes calldata _adapterParams) external view returns (uint nativeFee, uint zroFee); /** * @dev send `_amount` amount of token to (`_dstChainId`, `_toAddress`) from `_from` * `_from` the owner of token * `_dstChainId` the destination chain identifier * `_toAddress` can be any size depending on the `dstChainId`. * `_amount` the quantity of tokens in wei * `_refundAddress` the address LayerZero refunds if too much message fee is sent * `_zroPaymentAddress` set to address(0x0) if not paying in ZRO (LayerZero Token) * `_adapterParams` is a flexible bytes array to indicate messaging adapter services */ function sendFrom(address _from, uint16 _dstChainId, bytes calldata _toAddress, uint _amount, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams) external payable; /** * @dev returns the circulating amount of tokens on current chain */ function circulatingSupply() external view returns (uint); /** * @dev returns the address of the ERC20 token */ function token() external view returns (address); /** * @dev Emitted when `_amount` tokens are moved from the `_sender` to (`_dstChainId`, `_toAddress`) * `_nonce` is the outbound nonce */ event SendToChain(uint16 indexed _dstChainId, address indexed _from, bytes _toAddress, uint _amount); /** * @dev Emitted when `_amount` tokens are received from `_srcChainId` into the `_toAddress` on the local chain. * `_nonce` is the inbound nonce. */ event ReceiveFromChain(uint16 indexed _srcChainId, address indexed _to, uint _amount); event SetUseCustomAdapterParams(bool _useCustomAdapterParams); }
// SPDX-License-Identifier: MIT pragma solidity >=0.5.0; import "./IOFTCore.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; /** * @dev Interface of the OFT standard */ interface IOFT is IOFTCore, IERC20 { }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./LzApp.sol"; import "../util/ExcessivelySafeCall.sol"; /* * the default LayerZero messaging behaviour is blocking, i.e. any failed message will block the channel * this abstract class try-catch all fail messages and store locally for future retry. hence, non-blocking * NOTE: if the srcAddress is not configured properly, it will still block the message pathway from (srcChainId, srcAddress) */ abstract contract NonblockingLzApp is LzApp { using ExcessivelySafeCall for address; constructor(address _endpoint) LzApp(_endpoint) {} mapping(uint16 => mapping(bytes => mapping(uint64 => bytes32))) public failedMessages; event MessageFailed(uint16 _srcChainId, bytes _srcAddress, uint64 _nonce, bytes _payload, bytes _reason); event RetryMessageSuccess(uint16 _srcChainId, bytes _srcAddress, uint64 _nonce, bytes32 _payloadHash); // overriding the virtual function in LzReceiver function _blockingLzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) internal virtual override { (bool success, bytes memory reason) = address(this).excessivelySafeCall(gasleft(), 150, abi.encodeWithSelector(this.nonblockingLzReceive.selector, _srcChainId, _srcAddress, _nonce, _payload)); // try-catch all errors/exceptions if (!success) { _storeFailedMessage(_srcChainId, _srcAddress, _nonce, _payload, reason); } } function _storeFailedMessage(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload, bytes memory _reason) internal virtual { failedMessages[_srcChainId][_srcAddress][_nonce] = keccak256(_payload); emit MessageFailed(_srcChainId, _srcAddress, _nonce, _payload, _reason); } function nonblockingLzReceive(uint16 _srcChainId, bytes calldata _srcAddress, uint64 _nonce, bytes calldata _payload) public virtual { // only internal transaction require(_msgSender() == address(this), "NonblockingLzApp: caller must be LzApp"); _nonblockingLzReceive(_srcChainId, _srcAddress, _nonce, _payload); } //@notice override this function function _nonblockingLzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) internal virtual; function retryMessage(uint16 _srcChainId, bytes calldata _srcAddress, uint64 _nonce, bytes calldata _payload) public payable virtual { // assert there is message to retry bytes32 payloadHash = failedMessages[_srcChainId][_srcAddress][_nonce]; require(payloadHash != bytes32(0), "NonblockingLzApp: no stored message"); require(keccak256(_payload) == payloadHash, "NonblockingLzApp: invalid payload"); // clear the stored message failedMessages[_srcChainId][_srcAddress][_nonce] = bytes32(0); // execute the message. revert if it fails again _nonblockingLzReceive(_srcChainId, _srcAddress, _nonce, _payload); emit RetryMessageSuccess(_srcChainId, _srcAddress, _nonce, payloadHash); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/access/Ownable.sol"; import "../interfaces/ILayerZeroReceiver.sol"; import "../interfaces/ILayerZeroUserApplicationConfig.sol"; import "../interfaces/ILayerZeroEndpoint.sol"; import "../util/BytesLib.sol"; /* * a generic LzReceiver implementation */ abstract contract LzApp is Ownable, ILayerZeroReceiver, ILayerZeroUserApplicationConfig { using BytesLib for bytes; // ua can not send payload larger than this by default, but it can be changed by the ua owner uint constant public DEFAULT_PAYLOAD_SIZE_LIMIT = 10000; ILayerZeroEndpoint public immutable lzEndpoint; mapping(uint16 => bytes) public trustedRemoteLookup; mapping(uint16 => mapping(uint16 => uint)) public minDstGasLookup; mapping(uint16 => uint) public payloadSizeLimitLookup; address public precrime; event SetPrecrime(address precrime); event SetTrustedRemote(uint16 _remoteChainId, bytes _path); event SetTrustedRemoteAddress(uint16 _remoteChainId, bytes _remoteAddress); event SetMinDstGas(uint16 _dstChainId, uint16 _type, uint _minDstGas); constructor(address _endpoint) { lzEndpoint = ILayerZeroEndpoint(_endpoint); } function lzReceive(uint16 _srcChainId, bytes calldata _srcAddress, uint64 _nonce, bytes calldata _payload) public virtual override { // lzReceive must be called by the endpoint for security require(_msgSender() == address(lzEndpoint), "LzApp: invalid endpoint caller"); bytes memory trustedRemote = trustedRemoteLookup[_srcChainId]; // if will still block the message pathway from (srcChainId, srcAddress). should not receive message from untrusted remote. require(_srcAddress.length == trustedRemote.length && trustedRemote.length > 0 && keccak256(_srcAddress) == keccak256(trustedRemote), "LzApp: invalid source sending contract"); _blockingLzReceive(_srcChainId, _srcAddress, _nonce, _payload); } // abstract function - the default behaviour of LayerZero is blocking. See: NonblockingLzApp if you dont need to enforce ordered messaging function _blockingLzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) internal virtual; function _lzSend(uint16 _dstChainId, bytes memory _payload, address payable _refundAddress, address _zroPaymentAddress, bytes memory _adapterParams, uint _nativeFee) internal virtual { bytes memory trustedRemote = trustedRemoteLookup[_dstChainId]; require(trustedRemote.length != 0, "LzApp: destination chain is not a trusted source"); _checkPayloadSize(_dstChainId, _payload.length); lzEndpoint.send{value: _nativeFee}(_dstChainId, trustedRemote, _payload, _refundAddress, _zroPaymentAddress, _adapterParams); } function _checkGasLimit(uint16 _dstChainId, uint16 _type, bytes memory _adapterParams, uint _extraGas) internal view virtual { uint providedGasLimit = _getGasLimit(_adapterParams); uint minGasLimit = minDstGasLookup[_dstChainId][_type] + _extraGas; require(minGasLimit > 0, "LzApp: minGasLimit not set"); require(providedGasLimit >= minGasLimit, "LzApp: gas limit is too low"); } function _getGasLimit(bytes memory _adapterParams) internal pure virtual returns (uint gasLimit) { require(_adapterParams.length >= 34, "LzApp: invalid adapterParams"); assembly { gasLimit := mload(add(_adapterParams, 34)) } } function _checkPayloadSize(uint16 _dstChainId, uint _payloadSize) internal view virtual { uint payloadSizeLimit = payloadSizeLimitLookup[_dstChainId]; if (payloadSizeLimit == 0) { // use default if not set payloadSizeLimit = DEFAULT_PAYLOAD_SIZE_LIMIT; } require(_payloadSize <= payloadSizeLimit, "LzApp: payload size is too large"); } //---------------------------UserApplication config---------------------------------------- function getConfig(uint16 _version, uint16 _chainId, address, uint _configType) external view returns (bytes memory) { return lzEndpoint.getConfig(_version, _chainId, address(this), _configType); } // generic config for LayerZero user Application function setConfig(uint16 _version, uint16 _chainId, uint _configType, bytes calldata _config) external override onlyOwner { lzEndpoint.setConfig(_version, _chainId, _configType, _config); } function setSendVersion(uint16 _version) external override onlyOwner { lzEndpoint.setSendVersion(_version); } function setReceiveVersion(uint16 _version) external override onlyOwner { lzEndpoint.setReceiveVersion(_version); } function forceResumeReceive(uint16 _srcChainId, bytes calldata _srcAddress) external override onlyOwner { lzEndpoint.forceResumeReceive(_srcChainId, _srcAddress); } // _path = abi.encodePacked(remoteAddress, localAddress) // this function set the trusted path for the cross-chain communication function setTrustedRemote(uint16 _remoteChainId, bytes calldata _path) external onlyOwner { trustedRemoteLookup[_remoteChainId] = _path; emit SetTrustedRemote(_remoteChainId, _path); } function setTrustedRemoteAddress(uint16 _remoteChainId, bytes calldata _remoteAddress) external onlyOwner { trustedRemoteLookup[_remoteChainId] = abi.encodePacked(_remoteAddress, address(this)); emit SetTrustedRemoteAddress(_remoteChainId, _remoteAddress); } function getTrustedRemoteAddress(uint16 _remoteChainId) external view returns (bytes memory) { bytes memory path = trustedRemoteLookup[_remoteChainId]; require(path.length != 0, "LzApp: no trusted path record"); return path.slice(0, path.length - 20); // the last 20 bytes should be address(this) } function setPrecrime(address _precrime) external onlyOwner { precrime = _precrime; emit SetPrecrime(_precrime); } function setMinDstGas(uint16 _dstChainId, uint16 _packetType, uint _minGas) external onlyOwner { require(_minGas > 0, "LzApp: invalid minGas"); minDstGasLookup[_dstChainId][_packetType] = _minGas; emit SetMinDstGas(_dstChainId, _packetType, _minGas); } // if the size is 0, it means default size limit function setPayloadSizeLimit(uint16 _dstChainId, uint _size) external onlyOwner { payloadSizeLimitLookup[_dstChainId] = _size; } //--------------------------- VIEW FUNCTION ---------------------------------------- function isTrustedRemote(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (bool) { bytes memory trustedSource = trustedRemoteLookup[_srcChainId]; return keccak256(trustedSource) == keccak256(_srcAddress); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.5.0; interface ILayerZeroUserApplicationConfig { // @notice set the configuration of the LayerZero messaging library of the specified version // @param _version - messaging library version // @param _chainId - the chainId for the pending config change // @param _configType - type of configuration. every messaging library has its own convention. // @param _config - configuration in the bytes. can encode arbitrary content. function setConfig(uint16 _version, uint16 _chainId, uint _configType, bytes calldata _config) external; // @notice set the send() LayerZero messaging library version to _version // @param _version - new messaging library version function setSendVersion(uint16 _version) external; // @notice set the lzReceive() LayerZero messaging library version to _version // @param _version - new messaging library version function setReceiveVersion(uint16 _version) external; // @notice Only when the UA needs to resume the message flow in blocking mode and clear the stored payload // @param _srcChainId - the chainId of the source chain // @param _srcAddress - the contract address of the source contract at the source chain function forceResumeReceive(uint16 _srcChainId, bytes calldata _srcAddress) external; }
// SPDX-License-Identifier: MIT pragma solidity >=0.5.0; interface ILayerZeroReceiver { // @notice LayerZero endpoint will invoke this function to deliver the message on the destination // @param _srcChainId - the source endpoint identifier // @param _srcAddress - the source sending contract address from the source chain // @param _nonce - the ordered message nonce // @param _payload - the signed payload is the UA bytes has encoded to be sent function lzReceive(uint16 _srcChainId, bytes calldata _srcAddress, uint64 _nonce, bytes calldata _payload) external; }
// SPDX-License-Identifier: MIT pragma solidity >=0.5.0; import "./ILayerZeroUserApplicationConfig.sol"; interface ILayerZeroEndpoint is ILayerZeroUserApplicationConfig { // @notice send a LayerZero message to the specified address at a LayerZero endpoint. // @param _dstChainId - the destination chain identifier // @param _destination - the address on destination chain (in bytes). address length/format may vary by chains // @param _payload - a custom bytes payload to send to the destination contract // @param _refundAddress - if the source transaction is cheaper than the amount of value passed, refund the additional amount to this address // @param _zroPaymentAddress - the address of the ZRO token holder who would pay for the transaction // @param _adapterParams - parameters for custom functionality. e.g. receive airdropped native gas from the relayer on destination function send(uint16 _dstChainId, bytes calldata _destination, bytes calldata _payload, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams) external payable; // @notice used by the messaging library to publish verified payload // @param _srcChainId - the source chain identifier // @param _srcAddress - the source contract (as bytes) at the source chain // @param _dstAddress - the address on destination chain // @param _nonce - the unbound message ordering nonce // @param _gasLimit - the gas limit for external contract execution // @param _payload - verified payload to send to the destination contract function receivePayload(uint16 _srcChainId, bytes calldata _srcAddress, address _dstAddress, uint64 _nonce, uint _gasLimit, bytes calldata _payload) external; // @notice get the inboundNonce of a lzApp from a source chain which could be EVM or non-EVM chain // @param _srcChainId - the source chain identifier // @param _srcAddress - the source chain contract address function getInboundNonce(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (uint64); // @notice get the outboundNonce from this source chain which, consequently, is always an EVM // @param _srcAddress - the source chain contract address function getOutboundNonce(uint16 _dstChainId, address _srcAddress) external view returns (uint64); // @notice gets a quote in source native gas, for the amount that send() requires to pay for message delivery // @param _dstChainId - the destination chain identifier // @param _userApplication - the user app address on this EVM chain // @param _payload - the custom message to send over LayerZero // @param _payInZRO - if false, user app pays the protocol fee in native token // @param _adapterParam - parameters for the adapter service, e.g. send some dust native token to dstChain function estimateFees(uint16 _dstChainId, address _userApplication, bytes calldata _payload, bool _payInZRO, bytes calldata _adapterParam) external view returns (uint nativeFee, uint zroFee); // @notice get this Endpoint's immutable source identifier function getChainId() external view returns (uint16); // @notice the interface to retry failed message on this Endpoint destination // @param _srcChainId - the source chain identifier // @param _srcAddress - the source chain contract address // @param _payload - the payload to be retried function retryPayload(uint16 _srcChainId, bytes calldata _srcAddress, bytes calldata _payload) external; // @notice query if any STORED payload (message blocking) at the endpoint. // @param _srcChainId - the source chain identifier // @param _srcAddress - the source chain contract address function hasStoredPayload(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (bool); // @notice query if the _libraryAddress is valid for sending msgs. // @param _userApplication - the user app address on this EVM chain function getSendLibraryAddress(address _userApplication) external view returns (address); // @notice query if the _libraryAddress is valid for receiving msgs. // @param _userApplication - the user app address on this EVM chain function getReceiveLibraryAddress(address _userApplication) external view returns (address); // @notice query if the non-reentrancy guard for send() is on // @return true if the guard is on. false otherwise function isSendingPayload() external view returns (bool); // @notice query if the non-reentrancy guard for receive() is on // @return true if the guard is on. false otherwise function isReceivingPayload() external view returns (bool); // @notice get the configuration of the LayerZero messaging library of the specified version // @param _version - messaging library version // @param _chainId - the chainId for the pending config change // @param _userApplication - the contract address of the user application // @param _configType - type of configuration. every messaging library has its own convention. function getConfig(uint16 _version, uint16 _chainId, address _userApplication, uint _configType) external view returns (bytes memory); // @notice get the send() LayerZero messaging library version // @param _userApplication - the contract address of the user application function getSendVersion(address _userApplication) external view returns (uint16); // @notice get the lzReceive() LayerZero messaging library version // @param _userApplication - the contract address of the user application function getReceiveVersion(address _userApplication) external view returns (uint16); }
{ "remappings": [], "optimizer": { "enabled": true, "runs": 10 }, "evmVersion": "shanghai", "libraries": {}, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
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Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000ec306e46549a7e8f4fce823d3058f2d134133b1700000000000000000000000066a71dcef29a0ffbdbe3c6a460a3b5bc225cd67500000000000000000000000000000000000000000000021e19e0c9bab2400000
-----Decoded View---------------
Arg [0] : _minter (address): 0xEc306E46549A7E8f4fCE823D3058f2D134133B17
Arg [1] : _layerZeroEndpoint (address): 0x66A71Dcef29A0fFBDBE3c6a460a3B5BC225Cd675
Arg [2] : _cap (uint256): 10000000000000000000000
-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000ec306e46549a7e8f4fce823d3058f2d134133b17
Arg [1] : 00000000000000000000000066a71dcef29a0ffbdbe3c6a460a3b5bc225cd675
Arg [2] : 00000000000000000000000000000000000000000000021e19e0c9bab2400000
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A token is a representation of an on-chain or off-chain asset. The token page shows information such as price, total supply, holders, transfers and social links. Learn more about this page in our Knowledge Base.