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Implement EIP 7002 (withdrawal requests) (#3385)
* common: add eip 7002 * vm: add 7002 request accumulation logic * evm: support 7002 * vm: fix withdrawals address bug * vm: add eip7002 test (wip) [no ci] * vm: update eip7002 to use system call [no ci] * vm: ensure requests get added to the generated block * vm: expand 7002 tests [no ci] * vm: eip7002: ensure generated block runs * vm: eip7002 add error when contract is not deployed * vm: cleanup commit --------- Co-authored-by: acolytec3 <17355484+acolytec3@users.noreply.github.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,182 @@ | ||
| import { Block } from '@ethereumjs/block' | ||
| import { Chain, Common, Hardfork } from '@ethereumjs/common' | ||
| import { RLP } from '@ethereumjs/rlp' | ||
| import { LegacyTransaction } from '@ethereumjs/tx' | ||
| import { | ||
| Account, | ||
| Address, | ||
| bigIntToBytes, | ||
| bytesToHex, | ||
| concatBytes, | ||
| equalsBytes, | ||
| hexToBytes, | ||
| setLengthLeft, | ||
| zeros, | ||
| } from '@ethereumjs/util' | ||
| import { assert, describe, it } from 'vitest' | ||
|
|
||
| import { setupVM } from '../utils.js' | ||
|
|
||
| const pkey = hexToBytes(`0x${'20'.repeat(32)}`) | ||
| const addr = Address.fromPrivateKey(pkey) | ||
|
|
||
| const common = new Common({ chain: Chain.Mainnet, hardfork: Hardfork.Cancun, eips: [7685, 7002] }) | ||
|
|
||
| // Note: this deployment tx data is the deployment tx in order to setup the EIP-7002 contract | ||
| // It is taken from the EIP | ||
| const deploymentTxData = { | ||
| nonce: BigInt(0), | ||
| gasLimit: BigInt('0x3d090'), | ||
| gasPrice: BigInt('0xe8d4a51000'), | ||
| data: hexToBytes( | ||
| '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' | ||
| ), | ||
| v: BigInt('0x1b'), | ||
| r: BigInt('0x539'), | ||
| s: BigInt('0xaba653c9d105790c'), | ||
| } | ||
|
|
||
| const deploymentTx = LegacyTransaction.fromTxData(deploymentTxData) | ||
| const sender = deploymentTx.getSenderAddress() | ||
| const upfrontCost = deploymentTx.getUpfrontCost() | ||
| const acc = new Account() | ||
| acc.balance = upfrontCost | ||
|
|
||
| const validatorPubkey = hexToBytes(`0x${'20'.repeat(48)}`) | ||
| const amount = BigInt(12345678) | ||
| const amountBytes = setLengthLeft(bigIntToBytes(amount), 8) | ||
|
|
||
| function generateTx(nonce: bigint) { | ||
| const addressBytes = setLengthLeft( | ||
| bigIntToBytes(common.param('vm', 'withdrawalRequestPredeployAddress')), | ||
| 20 | ||
| ) | ||
| const withdrawalsAddress = Address.fromString(bytesToHex(addressBytes)) | ||
|
|
||
| return LegacyTransaction.fromTxData({ | ||
| nonce, | ||
| gasPrice: BigInt(100), | ||
| data: concatBytes(validatorPubkey, amountBytes), | ||
| value: BigInt(1), | ||
| to: withdrawalsAddress, | ||
| gasLimit: 200_000, | ||
| }).sign(pkey) | ||
| } | ||
|
|
||
| describe('EIP-7002 tests', () => { | ||
| it('should correctly create requests', async () => { | ||
| const vm = await setupVM({ common }) | ||
| const block = Block.fromBlockData( | ||
| { | ||
| header: { | ||
| number: 1, | ||
| }, | ||
| transactions: [deploymentTx], | ||
| }, | ||
| { common } | ||
| ) | ||
| await vm.stateManager.putAccount(sender, acc) | ||
| await vm.stateManager.putAccount(addr, acc) | ||
|
|
||
| // Deploy withdrawals contract | ||
| const results = await vm.runBlock({ | ||
| block, | ||
| skipHeaderValidation: true, | ||
| skipBlockValidation: true, | ||
| generate: true, | ||
| }) | ||
|
|
||
| const root = results.stateRoot | ||
|
|
||
| const tx = generateTx(BigInt(0)) | ||
|
|
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| // Call withdrawals contract with a withdrawals request | ||
| const block2 = Block.fromBlockData( | ||
| { | ||
| header: { | ||
| number: 2, | ||
| parentBeaconBlockRoot: zeros(32), | ||
| }, | ||
| transactions: [tx], | ||
| }, | ||
| { common } | ||
| ) | ||
|
|
||
| let generatedBlock: Block | ||
| vm.events.on('afterBlock', (e) => { | ||
| generatedBlock = e.block | ||
| }) | ||
|
|
||
| await vm.runBlock({ | ||
| block: block2, | ||
| skipHeaderValidation: true, | ||
| skipBlockValidation: true, | ||
| generate: true, | ||
| }) | ||
|
|
||
| // Ensure the request is generated | ||
| assert.ok(generatedBlock!.requests!.length === 1) | ||
|
|
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| const requestDecoded = RLP.decode(generatedBlock!.requests![0].bytes) | ||
|
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||
| const sourceAddressRequest = requestDecoded[0] as Uint8Array | ||
| const validatorPubkeyRequest = requestDecoded[1] as Uint8Array | ||
| const amountRequest = requestDecoded[2] as Uint8Array | ||
|
|
||
| // Ensure the requests are correct | ||
| assert.ok(equalsBytes(sourceAddressRequest, tx.getSenderAddress().bytes)) | ||
| assert.ok(equalsBytes(validatorPubkey, validatorPubkeyRequest)) | ||
| assert.ok(equalsBytes(amountBytes, amountRequest)) | ||
|
|
||
| await vm.runBlock({ block: generatedBlock!, skipHeaderValidation: true, root }) | ||
|
|
||
| // Run block with 2 requests | ||
|
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| const tx2 = generateTx(BigInt(1)) | ||
| const tx3 = generateTx(BigInt(2)) | ||
|
|
||
| const block3 = Block.fromBlockData( | ||
| { | ||
| header: { | ||
| number: 3, | ||
| parentBeaconBlockRoot: zeros(32), | ||
| }, | ||
| transactions: [tx2, tx3], | ||
| }, | ||
| { common } | ||
| ) | ||
|
|
||
| await vm.runBlock({ | ||
| block: block3, | ||
| skipHeaderValidation: true, | ||
| skipBlockValidation: true, | ||
| generate: true, | ||
| }) | ||
|
|
||
| // Note: generatedBlock is now overridden with the new generated block (this is thus block number 3) | ||
| // Ensure there are 2 requests | ||
| assert.ok(generatedBlock!.requests!.length === 2) | ||
| }) | ||
|
|
||
| it('should throw when contract is not deployed', async () => { | ||
| const vm = await setupVM({ common }) | ||
| const block = Block.fromBlockData( | ||
| { | ||
| header: { | ||
| number: 1, | ||
| }, | ||
| }, | ||
| { common } | ||
| ) | ||
| try { | ||
| await vm.runBlock({ | ||
| block, | ||
| skipHeaderValidation: true, | ||
| skipBlockValidation: true, | ||
| generate: true, | ||
| }) | ||
| } catch (e: any) { | ||
| assert.ok(e.message.includes('Attempt to accumulate EIP-7002 requests failed')) | ||
| } | ||
| }) | ||
| }) |