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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,166 @@ | ||
| //SPDX-License-Identifier: MIT | ||
| pragma solidity ^0.8.19; | ||
| import {IDepositContract} from "../interfaces/IDepositContract.sol"; | ||
| import {INexusInterface} from "../interfaces/INexusInterface.sol"; | ||
| import {INexusBridge} from "../interfaces/INexusBridge.sol"; | ||
|
|
||
| /** | ||
| * @title Nexus Tangible Library | ||
| * @author RohitAudit | ||
| * @dev This is the library contract used by any bridge contract to integrate with Nexus Network without | ||
| * adding addittional size to already contract | ||
| */ | ||
| contract NexusLibrary { | ||
| address public constant NEXUS_NETWORK = | ||
| 0x7610dd2DE44aA3c03313b4c2812C482D86F3a9e7; | ||
| address public constant NEXUS_FEE_ADDRESS = | ||
| 0x735bf02E4435dFADfE47a5FE5FBD42Ef375864A9; | ||
|
|
||
| // slot to be calculated = keccak256("NAME_VARIABLE") | ||
| bytes32 public constant AMOUNT_DEPOSITED_SLOT = | ||
| 0xca4e9536f4b6163e8b3c485d13888b64170049f120695cca4a7920674f669123; | ||
| bytes32 public constant AMOUNT_WITHDRAWN_SLOT = | ||
| 0x0727682b75deaf0886514bd82c90f1c6e80521cdb4aeb9ed6f2ada2d5f20f112; | ||
| bytes32 public constant AMOUNT_SLASHED_SLOT = | ||
| 0x67a602d91fdafa346635ea0b2cfecfa87c6c87b3eb52ac04414bcb5fffd82e5f; | ||
| bytes32 public constant VALIDATOR_COUNT_SLOT = | ||
| 0x2d5a8d8ceecd33ab6923979e59fb92c16d966ad0b4d5ecdfb4adac6bafdd0ae5; | ||
| bytes32 public constant NEXUS_FEE_PERCENTAGE_SLOT = | ||
| 0xac871e33a0d6f83ef496541ab4d2cb28c9c72346647360c557889bbd13ec109d; | ||
| bytes32 public constant REWARDS_CLAIMED_SLOT = | ||
| 0x9fbc0f1af8e544d8995616c6f64d9fc6ca8bf8885fb0f08f57738b97334c0f73; | ||
|
|
||
| // To be changed to the respective network addresses: | ||
| address public constant DAO = 0x14630e0428B9BbA12896402257fa09035f9F7447; | ||
| address public constant DEPOSIT_CONTRACT = | ||
| 0xff50ed3d0ec03aC01D4C79aAd74928BFF48a7b2b; | ||
|
|
||
| uint256 public constant VALIDATOR_DEPOSIT = 32 ether; | ||
| uint256 public constant BASIS_POINT = 10000; | ||
| error NotNexus(); | ||
| error IncorrectWithdrawalCredentials(); | ||
| error StakingLimitExceeding(); | ||
| error IncorrectNexusFee(); | ||
| error ValidatorNotExited(); | ||
| error WaitingForValidatorExits(); | ||
| error NotDAO(); | ||
|
|
||
| event RewardsRedeemed(uint256 amount); | ||
| event SlashingUpdated(uint256 amount); | ||
| event NexusFeeChanged(uint256 _nexus_fee); | ||
| event NexusRewardsRedeemed(uint256 amount); | ||
|
|
||
| modifier onlyNexus() { | ||
| if (msg.sender != NEXUS_NETWORK) revert NotNexus(); | ||
| _; | ||
| } | ||
|
|
||
| modifier onlyDAO() { | ||
| if (msg.sender != DAO) revert NotDAO(); | ||
| _; | ||
| } | ||
|
|
||
| function setVariable(bytes32 _slot, uint256 amount) public { | ||
| assembly { | ||
| sstore(_slot, amount) | ||
| } | ||
| } | ||
|
|
||
| function getVariable(bytes32 _slot) public view returns (uint256) { | ||
| uint256 variableValue; | ||
| assembly { | ||
| variableValue := sload(_slot) | ||
| } | ||
| return variableValue; | ||
| } | ||
|
|
||
| function updateExitedValidators() external onlyNexus { | ||
| if (getRewards() < VALIDATOR_DEPOSIT) revert ValidatorNotExited(); | ||
| uint256 validatorCount = getVariable(VALIDATOR_COUNT_SLOT); | ||
| validatorCount -= 1; | ||
| setVariable(VALIDATOR_COUNT_SLOT,validatorCount); | ||
| } | ||
|
|
||
| function setNexusFee(uint256 _nexus_fee) external onlyNexus { | ||
| if (_nexus_fee > (BASIS_POINT) / 10) revert IncorrectNexusFee(); | ||
| setVariable(NEXUS_FEE_PERCENTAGE_SLOT, _nexus_fee); | ||
| emit NexusFeeChanged(_nexus_fee); | ||
| } | ||
|
|
||
| function depositValidatorNexus( | ||
| INexusInterface.Validator[] calldata _validators, | ||
| uint256 stakingLimit | ||
| ) external onlyNexus { | ||
| for (uint i = 0; i < _validators.length; i++) { | ||
| bytes memory withdrawalFromCred = _validators[i] | ||
| .withdrawalAddress[12:]; | ||
| if ( | ||
| keccak256(withdrawalFromCred) != | ||
| keccak256(abi.encodePacked(address(this))) | ||
| ) revert IncorrectWithdrawalCredentials(); | ||
| } | ||
| uint256 validatorCount = getVariable(VALIDATOR_COUNT_SLOT); | ||
| if ( | ||
| (((validatorCount + _validators.length) * | ||
| (VALIDATOR_DEPOSIT) * | ||
| BASIS_POINT) / | ||
| (address(this).balance + | ||
| (validatorCount + _validators.length) * | ||
| (VALIDATOR_DEPOSIT))) > stakingLimit | ||
| ) revert StakingLimitExceeding(); | ||
|
|
||
| for (uint i = 0; i < _validators.length; i++) { | ||
| IDepositContract(DEPOSIT_CONTRACT).deposit{ | ||
| value: VALIDATOR_DEPOSIT | ||
| }( | ||
| _validators[i].pubKey, | ||
| _validators[i].withdrawalAddress, | ||
| _validators[i].signature, | ||
| _validators[i].depositRoot | ||
| ); | ||
| } | ||
| validatorCount += _validators.length; | ||
| } | ||
|
|
||
| function validatorsSlashed(uint256 amount) external onlyNexus { | ||
| setVariable(AMOUNT_SLASHED_SLOT, amount); | ||
| emit SlashingUpdated(amount); | ||
| } | ||
|
|
||
| function getRewards() public view returns (uint256) { | ||
| uint256 validatorCount = getVariable(VALIDATOR_COUNT_SLOT); | ||
| uint256 amountDeposited = getVariable(AMOUNT_DEPOSITED_SLOT); | ||
| uint256 amountWithdrawn = getVariable(AMOUNT_WITHDRAWN_SLOT); | ||
| uint256 slashedAmount = getVariable(AMOUNT_SLASHED_SLOT); | ||
| return | ||
| (address(this).balance + (validatorCount * VALIDATOR_DEPOSIT)) - | ||
| (amountDeposited - amountWithdrawn) - | ||
| slashedAmount; | ||
| } | ||
|
|
||
| function redeemRewards(address reward_account) external onlyDAO { | ||
| uint256 total_rewards = getRewards(); | ||
| if (total_rewards > VALIDATOR_DEPOSIT) | ||
| revert WaitingForValidatorExits(); | ||
| uint256 NexusFeePercentage = getVariable(NEXUS_FEE_PERCENTAGE_SLOT); | ||
| uint256 _nexus_rewards = (NexusFeePercentage * total_rewards) / | ||
| BASIS_POINT; | ||
| (bool nexus_success, bytes memory nexus_data) = NEXUS_FEE_ADDRESS.call{ | ||
| value: _nexus_rewards, | ||
| gas: 5000 | ||
| }(""); | ||
| if (nexus_success) { | ||
| emit NexusRewardsRedeemed(_nexus_rewards); | ||
| } | ||
| (bool dao_success, bytes memory dao_data) = reward_account.call{ | ||
| value: (total_rewards - _nexus_rewards), | ||
| gas: 5000 | ||
| }(""); | ||
| uint256 rewardsClaimed = getVariable(REWARDS_CLAIMED_SLOT); | ||
| rewardsClaimed += total_rewards; | ||
| setVariable(REWARDS_CLAIMED_SLOT, rewardsClaimed); | ||
| if (dao_success) { | ||
| emit RewardsRedeemed((total_rewards - _nexus_rewards)); | ||
| } | ||
| } | ||
| } |
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