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Add AxelarProxy as an auto-detecting proxy type (#75)
* AxelarProxy * Rename * Provide a way to get the slot of the implementation * fetch admin addresses * ylff * Fetch owners and operators * changeset
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182 changes: 182 additions & 0 deletions
182
packages/discovery/src/discovery/proxies/auto/AxelarProxy.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,182 @@ | ||
| import { assert } from '@l2beat/backend-tools' | ||
| import { ProxyDetails } from '@l2beat/discovery-types' | ||
| import { BigNumber, BytesLike, utils } from 'ethers' | ||
|
|
||
| import { Bytes } from '../../../utils/Bytes' | ||
| import { EthereumAddress } from '../../../utils/EthereumAddress' | ||
| import { DiscoveryProvider } from '../../provider/DiscoveryProvider' | ||
| import { bytes32ToAddress } from '../../utils/address' | ||
|
|
||
| // keccak256(abi.encode(uint256(keccak256('eip1967.proxy.implementation')) - 1, s)) | ||
| // | ||
| // where `s` is the slot of the `_addressStorage`, so in this case it's s = 2 | ||
| const IMPLEMENTATION_SLOT = Bytes.fromHex( | ||
| '0x11141f466c69fd409e1990e063b49cd6d61ed2ecff27a2e402e259ca6b9a01a3', | ||
| ) | ||
|
|
||
| async function getImplementation( | ||
| provider: DiscoveryProvider, | ||
| address: EthereumAddress, | ||
| blockNumber: number, | ||
| ): Promise<EthereumAddress> { | ||
| return bytes32ToAddress( | ||
| await provider.getStorage(address, IMPLEMENTATION_SLOT, blockNumber), | ||
| ) | ||
| } | ||
|
|
||
| export async function detectAxelarProxy( | ||
| provider: DiscoveryProvider, | ||
| address: EthereumAddress, | ||
| blockNumber: number, | ||
| ): Promise<ProxyDetails | undefined> { | ||
| const implementation = await getImplementation(provider, address, blockNumber) | ||
| if (implementation === EthereumAddress.ZERO) { | ||
| return | ||
| } | ||
|
|
||
| const adminDeployment = await getAdminsDeployment(provider, address) | ||
| const owners = await getOwners(provider, address, blockNumber) | ||
| const operators = await getOperators(provider, address, blockNumber) | ||
| assert(owners && operators) | ||
|
|
||
| return { | ||
| implementations: [implementation], | ||
| relatives: [], | ||
| upgradeability: { | ||
| type: 'Axelar proxy', | ||
| admins: adminDeployment.adminAddresses, | ||
| adminThreshold: adminDeployment.adminThreshold, | ||
| owners: owners.ownerAddresses, | ||
| ownerThreshold: owners.ownerThreshold, | ||
| operators: operators.operatorAddresses, | ||
| operatorThreshold: operators.operatorThreshold, | ||
| implementation, | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| async function getAdminsDeployment( | ||
| provider: DiscoveryProvider, | ||
| address: EthereumAddress, | ||
| ): Promise<{ | ||
| adminAddresses: EthereumAddress[] | ||
| adminThreshold: number | ||
| }> { | ||
| const constructorInterface = utils.Fragment.from( | ||
| 'constructor(bytes memory params)', | ||
| ) | ||
| const result = await provider.getConstructorArgs(address) | ||
| const decodedArgs = utils.defaultAbiCoder.decode( | ||
| constructorInterface.inputs, | ||
| '0x' + result, | ||
| ) | ||
|
|
||
| const decodedParams = utils.defaultAbiCoder.decode( | ||
| [ | ||
| 'address[]', // adminAddresses | ||
| 'uint256', // adminThreshold | ||
| 'address[]', // ownerAddresses | ||
| 'uint256', // ownerThreshold | ||
| 'address[]', // operatorAddresses | ||
| 'uint256', // operatorThreshold | ||
| ], | ||
| decodedArgs[0] as BytesLike, | ||
| ) | ||
|
|
||
| const [adminAddresses, adminThreshold] = decodedParams | ||
|
|
||
| return { | ||
| adminAddresses: (adminAddresses as string[]).map((a) => EthereumAddress(a)), | ||
| adminThreshold: (adminThreshold as BigNumber).toNumber(), | ||
| } | ||
| } | ||
|
|
||
| async function getOwners( | ||
| provider: DiscoveryProvider, | ||
| address: EthereumAddress, | ||
| blockNumber: number, | ||
| ): Promise< | ||
| | { | ||
| ownerAddresses: EthereumAddress[] | ||
| ownerThreshold: number | ||
| } | ||
| | false | ||
| > { | ||
| const event = new utils.Interface([ | ||
| 'event OwnershipTransferred(address[] preOwners, uint256 prevThreshold, address[] newOwners, uint256 newThreshold)', | ||
| ]) | ||
|
|
||
| const transfers = await provider.getLogs( | ||
| address, | ||
| [event.getEventTopic('OwnershipTransferred')], | ||
| 0, | ||
| blockNumber, | ||
| ) | ||
|
|
||
| const lastTransfer = transfers.at(-1) | ||
| if (lastTransfer === undefined) { | ||
| return false | ||
| } | ||
|
|
||
| const [_preOwners, _prevThreshold, newOwners, newThreshold] = | ||
| utils.defaultAbiCoder.decode( | ||
| [ | ||
| 'address[]', // preOwners | ||
| 'uint256', // prevThreshold | ||
| 'address[]', // newOwners | ||
| 'uint256', // newThreshold | ||
| ], | ||
| lastTransfer.data, | ||
| ) | ||
|
|
||
| return { | ||
| ownerAddresses: (newOwners as string[]).map((a) => EthereumAddress(a)), | ||
| ownerThreshold: (newThreshold as BigNumber).toNumber(), | ||
| } | ||
| } | ||
|
|
||
| async function getOperators( | ||
| provider: DiscoveryProvider, | ||
| address: EthereumAddress, | ||
| blockNumber: number, | ||
| ): Promise< | ||
| | { | ||
| operatorAddresses: EthereumAddress[] | ||
| operatorThreshold: number | ||
| } | ||
| | false | ||
| > { | ||
| const event = new utils.Interface([ | ||
| 'event OperatorshipTransferred(address[] preOperators, uint256 prevThreshold, address[] newOperators, uint256 newThreshold)', | ||
| ]) | ||
|
|
||
| const transfers = await provider.getLogs( | ||
| address, | ||
| [event.getEventTopic('OperatorshipTransferred')], | ||
| 0, | ||
| blockNumber, | ||
| ) | ||
|
|
||
| const lastTransfer = transfers.at(-1) | ||
| if (lastTransfer === undefined) { | ||
| return false | ||
| } | ||
|
|
||
| const [_preOperators, _prevThreshold, newOperators, newThreshold] = | ||
| utils.defaultAbiCoder.decode( | ||
| [ | ||
| 'address[]', // preOperators | ||
| 'uint256', // prevThreshold | ||
| 'address[]', // newOperators | ||
| 'uint256', // newThreshold | ||
| ], | ||
| lastTransfer.data, | ||
| ) | ||
|
|
||
| return { | ||
| operatorAddresses: (newOperators as string[]).map((a) => | ||
| EthereumAddress(a), | ||
| ), | ||
| operatorThreshold: (newThreshold as BigNumber).toNumber(), | ||
| } | ||
| } |