288 lines
9.1 KiB
Nim
288 lines
9.1 KiB
Nim
# beacon_chain
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# Copyright (c) 2018-2021 Status Research & Development GmbH
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# Licensed and distributed under either of
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# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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{.push raises: [Defect].}
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import
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os, sequtils, strutils, options, json, terminal,
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chronos, chronicles, confutils, stint, json_serialization,
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../filepath,
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../networking/network_metadata,
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web3, web3/confutils_defs, eth/keys, eth/p2p/discoveryv5/random2,
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stew/io2,
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../spec/eth2_merkleization,
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../spec/datatypes/base,
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../validators/keystore_management
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# Compiled version of /scripts/depositContract.v.py in this repo
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# The contract was compiled in Remix (https://remix.ethereum.org/) with vyper (remote) compiler.
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const contractCode = staticRead "deposit_contract_code.txt"
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type
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Eth1Address = web3.Address
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StartUpCommand {.pure.} = enum
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deploy
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drain
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sendEth
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generateSimulationDeposits
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sendDeposits
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CliConfig = object
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web3Url* {.
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defaultValue: "",
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desc: "URL of the Web3 server to observe Eth1"
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name: "web3-url" }: string
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privateKey* {.
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defaultValue: ""
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desc: "Private key of the controlling account"
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name: "private-key" }: string
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askForKey {.
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defaultValue: false
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desc: "Ask for an Eth1 private key interactively"
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name: "ask-for-key" }: bool
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eth2Network* {.
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desc: "The Eth2 network preset to use"
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name: "network" }: Option[string]
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case cmd* {.command.}: StartUpCommand
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of deploy:
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discard
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of drain:
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drainedContractAddress* {.
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desc: "Address of the contract to drain"
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name: "deposit-contract" }: Eth1Address
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of sendEth:
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toAddress {.name: "to".}: Eth1Address
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valueEth {.name: "eth".}: string
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of generateSimulationDeposits:
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simulationDepositsCount {.
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desc: "The number of validator keystores to generate"
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name: "count" }: Natural
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outValidatorsDir {.
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desc: "A directory to store the generated validator keystores"
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name: "out-validators-dir" }: OutDir
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outSecretsDir {.
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desc: "A directory to store the generated keystore password files"
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name: "out-secrets-dir" }: OutDir
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outDepositsFile {.
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desc: "A LaunchPad deposits file to write"
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name: "out-deposits-file" }: OutFile
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of sendDeposits:
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depositsFile {.
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desc: "A LaunchPad deposits file"
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name: "deposits-file" }: InputFile
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depositContractAddress {.
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desc: "Address of the deposit contract"
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name: "deposit-contract" }: Eth1Address
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minDelay {.
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defaultValue: 0.0
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desc: "Minimum possible delay between making two deposits (in seconds)"
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name: "min-delay" }: float
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maxDelay {.
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defaultValue: 0.0
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desc: "Maximum possible delay between making two deposits (in seconds)"
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name: "max-delay" }: float
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contract(DepositContract):
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proc deposit(pubkey: Bytes48,
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withdrawalCredentials: Bytes32,
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signature: Bytes96,
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deposit_data_root: FixedBytes[32])
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proc drain()
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proc deployContract*(web3: Web3, code: string): Future[ReceiptObject] {.async.} =
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var code = code
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if code[1] notin {'x', 'X'}:
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code = "0x" & code
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let tr = EthSend(
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source: web3.defaultAccount,
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data: code,
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gas: Quantity(3000000).some,
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gasPrice: 1.some)
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let r = await web3.send(tr)
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result = await web3.getMinedTransactionReceipt(r)
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proc sendEth(web3: Web3, to: Eth1Address, valueEth: int): Future[TxHash] =
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let tr = EthSend(
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source: web3.defaultAccount,
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gas: Quantity(3000000).some,
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gasPrice: 1.some,
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value: some(valueEth.u256 * 1000000000000000000.u256),
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to: some(to))
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web3.send(tr)
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type
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DelayGenerator* = proc(): chronos.Duration {.gcsafe, raises: [Defect].}
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proc ethToWei(eth: UInt256): UInt256 =
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eth * 1000000000000000000.u256
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proc initWeb3(web3Url, privateKey: string): Future[Web3] {.async.} =
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result = await newWeb3(web3Url)
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if privateKey.len != 0:
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result.privateKey = some(PrivateKey.fromHex(privateKey)[])
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else:
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let accounts = await result.provider.eth_accounts()
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doAssert(accounts.len > 0)
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result.defaultAccount = accounts[0]
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# TODO: async functions should note take `seq` inputs because
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# this leads to full copies.
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proc sendDeposits*(deposits: seq[LaunchPadDeposit],
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web3Url, privateKey: string,
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depositContractAddress: Eth1Address,
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delayGenerator: DelayGenerator = nil) {.async.} =
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notice "Sending deposits",
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web3 = web3Url,
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depositContract = depositContractAddress
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var web3 = await initWeb3(web3Url, privateKey)
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let depositContract = web3.contractSender(DepositContract,
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Address depositContractAddress)
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for i, launchPadDeposit in deposits:
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let dp = launchPadDeposit as DepositData
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while true:
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try:
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let tx = depositContract.deposit(
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Bytes48(dp.pubKey.toRaw()),
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Bytes32(dp.withdrawal_credentials.data),
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Bytes96(dp.signature.toRaw()),
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FixedBytes[32](hash_tree_root(dp).data))
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let status = await tx.send(value = 32.u256.ethToWei, gasPrice = 1)
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info "Deposit sent", status = $status
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if delayGenerator != nil:
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await sleepAsync(delayGenerator())
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break
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except CatchableError:
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await sleepAsync(60.seconds)
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web3 = await initWeb3(web3Url, privateKey)
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{.pop.} # TODO confutils.nim(775, 17) Error: can raise an unlisted exception: ref IOError
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proc main() {.async.} =
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var conf = CliConfig.load()
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let rng = keys.newRng()
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if conf.cmd == StartUpCommand.generateSimulationDeposits:
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let
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mnemonic = generateMnemonic(rng[])
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seed = getSeed(mnemonic, KeyStorePass.init "")
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cfg = getRuntimeConfig(conf.eth2Network)
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let vres = secureCreatePath(string conf.outValidatorsDir)
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if vres.isErr():
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warn "Could not create validators folder",
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path = string conf.outValidatorsDir, err = ioErrorMsg(vres.error)
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let sres = secureCreatePath(string conf.outSecretsDir)
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if sres.isErr():
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warn "Could not create secrets folder",
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path = string conf.outSecretsDir, err = ioErrorMsg(sres.error)
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let deposits = generateDeposits(
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cfg,
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rng[],
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seed,
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0, conf.simulationDepositsCount,
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string conf.outValidatorsDir,
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string conf.outSecretsDir)
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if deposits.isErr:
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fatal "Failed to generate deposits", err = deposits.error
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quit 1
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let launchPadDeposits =
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mapIt(deposits.value, LaunchPadDeposit.init(cfg, it))
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Json.saveFile(string conf.outDepositsFile, launchPadDeposits)
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notice "Deposit data written", filename = conf.outDepositsFile
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quit 0
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var deposits: seq[LaunchPadDeposit]
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if conf.cmd == StartUpCommand.sendDeposits:
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deposits = Json.loadFile(string conf.depositsFile, seq[LaunchPadDeposit])
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if conf.askForKey:
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var
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privateKey: TaintedString
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reasonForKey = ""
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if conf.cmd == StartUpCommand.sendDeposits:
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let
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depositsWord = if deposits.len > 1: "deposits" else: "deposit"
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totalEthNeeded = 32 * deposits.len
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reasonForKey = " in order to make your $1 (you'll need access to $2 ETH)" %
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[depositsWord, $totalEthNeeded]
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echo "Please enter your Goerli Eth1 private key in hex form (e.g. 0x1a2...f3c)" &
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reasonForKey
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if not readPasswordFromStdin("> ", privateKey):
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error "Failed to read an Eth1 private key from standard input"
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if privateKey.len > 0:
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conf.privateKey = privateKey.string
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let web3 = await initWeb3(conf.web3Url, conf.privateKey)
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case conf.cmd
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of StartUpCommand.deploy:
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let receipt = await web3.deployContract(contractCode)
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echo receipt.contractAddress.get, ";", receipt.blockHash
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of StartUpCommand.drain:
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let sender = web3.contractSender(DepositContract,
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conf.drainedContractAddress)
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discard await sender.drain().send(gasPrice = 1)
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of StartUpCommand.sendEth:
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echo await sendEth(web3, conf.toAddress, conf.valueEth.parseInt)
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of StartUpCommand.sendDeposits:
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var delayGenerator: DelayGenerator
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if not (conf.maxDelay > 0.0):
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conf.maxDelay = conf.minDelay
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elif conf.minDelay > conf.maxDelay:
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echo "The minimum delay should not be larger than the maximum delay"
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quit 1
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if conf.maxDelay > 0.0:
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delayGenerator = proc (): chronos.Duration =
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let
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minDelay = (conf.minDelay*1000).int64
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maxDelay = (conf.maxDelay*1000).int64
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chronos.milliseconds (rng[].rand(maxDelay - minDelay) + minDelay)
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await sendDeposits(deposits, conf.web3Url, conf.privateKey,
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conf.depositContractAddress, delayGenerator)
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of StartUpCommand.generateSimulationDeposits:
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# This is handled above before the case statement
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discard
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when isMainModule: waitFor main()
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