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150 changes: 150 additions & 0 deletions
150
evm/src/NttManager/NttManagerWithPerChainTransceivers.sol
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| // SPDX-License-Identifier: Apache 2 | ||
| pragma solidity >=0.8.8 <0.9.0; | ||
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| import "./NttManager.sol"; | ||
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| /// @title NttManagerNoRateLimiting | ||
| /// @author Wormhole Project Contributors. | ||
| /// @notice The NttManagerNoRateLimiting abstract contract is an implementation of | ||
| /// NttManager that allows configuring different transceivers and thresholds | ||
| /// for each chain. Note that you can configure a different set of send and | ||
| /// receive transceivers for each chain, and if you don't specifically enable | ||
| /// any transceivers for a chain, then all transceivers will be used for it. | ||
| /// | ||
| /// @dev All of the developer notes from `NttManager` apply here. | ||
| abstract contract NttManagerWithPerChainTransceivers is NttManager { | ||
| constructor( | ||
| address _token, | ||
| Mode _mode, | ||
| uint16 _chainId, | ||
| uint64 _rateLimitDuration, | ||
| bool _skipRateLimiting | ||
| ) NttManager(_token, _mode, _chainId, _rateLimitDuration, _skipRateLimiting) {} | ||
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| bytes32 private constant SEND_TRANSCEIVER_BITMAP_SLOT = | ||
| bytes32(uint256(keccak256("nttpct.sendTransceiverBitmap")) - 1); | ||
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| bytes32 private constant RECV_TRANSCEIVER_BITMAP_SLOT = | ||
| bytes32(uint256(keccak256("nttpct.recvTransceiverBitmap")) - 1); | ||
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| // ==================== Override / implementation of transceiver stuff ========================= | ||
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| /// @inheritdoc IManagerBase | ||
| function enableSendTransceiverForChain( | ||
| address transceiver, | ||
| uint16 forChainId | ||
| ) external override(ManagerBase, IManagerBase) onlyOwner { | ||
| _enableTranceiverForChain(transceiver, forChainId, SEND_TRANSCEIVER_BITMAP_SLOT); | ||
| } | ||
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| /// @inheritdoc IManagerBase | ||
| function enableRecvTransceiverForChain( | ||
| address transceiver, | ||
| uint16 forChainId | ||
| ) external override(ManagerBase, IManagerBase) onlyOwner { | ||
| _enableTranceiverForChain(transceiver, forChainId, RECV_TRANSCEIVER_BITMAP_SLOT); | ||
| } | ||
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| function _enableTranceiverForChain( | ||
| address transceiver, | ||
| uint16 forChainId, | ||
| bytes32 tag | ||
| ) internal onlyOwner { | ||
| if (transceiver == address(0)) { | ||
| revert InvalidTransceiverZeroAddress(); | ||
| } | ||
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| mapping(address => TransceiverInfo) storage transceiverInfos = _getTransceiverInfosStorage(); | ||
| if (!transceiverInfos[transceiver].registered) { | ||
| revert NonRegisteredTransceiver(transceiver); | ||
| } | ||
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| uint8 index = _getTransceiverInfosStorage()[transceiver].index; | ||
| mapping(uint16 => _EnabledTransceiverBitmap) storage _bitmaps = | ||
| _getPerChainTransceiverBitmapStorage(tag); | ||
| _bitmaps[forChainId].bitmap |= uint64(1 << index); | ||
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| emit TransceiverEnabledForChain(transceiver, forChainId); | ||
| } | ||
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| function _isSendTransceiverEnabledForChain( | ||
| address transceiver, | ||
| uint16 forChainId | ||
| ) internal view override returns (bool) { | ||
| uint64 bitmap = | ||
| _getPerChainTransceiverBitmapStorage(SEND_TRANSCEIVER_BITMAP_SLOT)[forChainId].bitmap; | ||
| if (bitmap == 0) { | ||
| // NOTE: this makes it backwards compatible -- if the bitmap is not | ||
| // set, it's assumed the corridor uses all transceivers. | ||
| bitmap = type(uint64).max; | ||
| } | ||
| uint8 index = _getTransceiverInfosStorage()[transceiver].index; | ||
| return (bitmap & uint64(1 << index)) != 0; | ||
| } | ||
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| function _getEnabledRecvTransceiversForChain( | ||
| uint16 forChainId | ||
| ) internal view override returns (uint64 bitmap) { | ||
| bitmap = | ||
| _getPerChainTransceiverBitmapStorage(RECV_TRANSCEIVER_BITMAP_SLOT)[forChainId].bitmap; | ||
| if (bitmap == 0) { | ||
| // NOTE: this makes it backwards compatible -- if the bitmap is not | ||
| // set, it's assumed the corridor uses all transceivers. | ||
| bitmap = type(uint64).max; | ||
| } | ||
| } | ||
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| function _getPerChainTransceiverBitmapStorage( | ||
| bytes32 tag | ||
| ) internal pure returns (mapping(uint16 => _EnabledTransceiverBitmap) storage $) { | ||
| // TODO: this is safe (reusing the storage slot, because the mapping | ||
| // doesn't write into the slot itself) buy maybe we shouldn't? | ||
| uint256 slot = uint256(tag); | ||
| assembly ("memory-safe") { | ||
| $.slot := slot | ||
| } | ||
| } | ||
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| // ==================== Override / implementation of threshold stuff ========================= | ||
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| /// @inheritdoc IManagerBase | ||
| function setPerChainThreshold( | ||
| uint16 forChainId, | ||
| uint8 threshold | ||
| ) external override(ManagerBase, IManagerBase) onlyOwner { | ||
| if (threshold == 0) { | ||
| revert ZeroThreshold(); | ||
| } | ||
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| mapping(uint16 => _Threshold) storage _threshold = _getThresholdStoragePerChain(); | ||
| uint8 oldThreshold = _threshold[forChainId].num; | ||
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| _threshold[forChainId].num = threshold; | ||
| _checkThresholdInvariants(_threshold[forChainId].num); | ||
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| emit PerChainThresholdChanged(forChainId, oldThreshold, threshold); | ||
| } | ||
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| function getPerChainThreshold( | ||
| uint16 forChainId | ||
| ) public view override(ManagerBase, IManagerBase) returns (uint8) { | ||
| uint8 threshold = _getThresholdStoragePerChain()[forChainId].num; | ||
| if (threshold == 0) { | ||
| return _getThresholdStorage().num; | ||
| } | ||
| return threshold; | ||
| } | ||
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| function _getThresholdStoragePerChain() | ||
| private | ||
| pure | ||
| returns (mapping(uint16 => _Threshold) storage $) | ||
| { | ||
| // TODO: this is safe (reusing the storage slot, because the mapping | ||
| // doesn't write into the slot itself) buy maybe we shouldn't? | ||
| uint256 slot = uint256(THRESHOLD_SLOT); | ||
| assembly ("memory-safe") { | ||
| $.slot := slot | ||
| } | ||
| } | ||
| } |
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