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# beacon_chain
# Copyright (c) 2018-2021 Status Research & Development GmbH
# Licensed and distributed under either of
# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
# at your option. This file may not be copied, modified, or distributed except according to those terms.
{.push raises: [Defect].}
import
strutils, os, options, unicode, uri,
chronicles, chronicles/options as chroniclesOptions,
confutils, confutils/defs, confutils/std/net, stew/shims/net as stewNet,
stew/[io2, byteutils], unicodedb/properties, normalize,
eth/common/eth_types as commonEthTypes, eth/net/nat,
eth/p2p/discoveryv5/enr,
json_serialization, web3/[ethtypes, confutils_defs],
./spec/[keystore, network],
./spec/datatypes/base,
./networking/network_metadata,
./validators/slashing_protection_common,
./filepath
export
uri,
defaultEth2TcpPort, enabledLogLevel, ValidIpAddress,
defs, parseCmdArg, completeCmdArg, network_metadata
const
# TODO: How should we select between IPv4 and IPv6
# Maybe there should be a config option for this.
defaultListenAddress* = (static ValidIpAddress.init("0.0.0.0"))
defaultAdminListenAddress* = (static ValidIpAddress.init("127.0.0.1"))
type
BNStartUpCmd* = enum
noCommand
createTestnet
deposits
wallets
record
web3
slashingdb
WalletsCmd* {.pure.} = enum
create = "Creates a new EIP-2386 wallet"
restore = "Restores a wallet from cold storage"
list = "Lists details about all wallets"
DepositsCmd* {.pure.} = enum
createTestnetDeposits = "Creates validator keystores and deposits for testnet usage"
`import` = "Imports password-protected keystores interactively"
# status = "Displays status information about all deposits"
exit = "Submits a validator voluntary exit"
VCStartUpCmd* = enum
VCNoCommand
RecordCmd* {.pure.} = enum
create = "Create a new ENR"
print = "Print the content of a given ENR"
Web3Cmd* {.pure.} = enum
test = "Test a web3 provider"
Web3Mode* {.pure.} = enum
auto # Enabled only when validators are attached
enabled # Always enabled
disabled # Always disabled
SlashingDbKind* {.pure.} = enum
v1
v2
both
SlashProtCmd* = enum
`import` = "Import a EIP-3076 slashing protection interchange file"
`export` = "Export a EIP-3076 slashing protection interchange file"
# migrateAll = "Export and remove the whole validator slashing protection DB."
# migrate = "Export and remove specified validators from Nimbus."
BeaconNodeConf* = object
logLevel* {.
desc: "Sets the log level for process and topics (e.g. \"DEBUG; TRACE:discv5,libp2p; REQUIRED:none; DISABLED:none\")"
defaultValue: "INFO"
name: "log-level" }: string
logFile* {.
desc: "Specifies a path for the written Json log file"
name: "log-file" }: Option[OutFile]
eth2Network* {.
desc: "The Eth2 network to join"
defaultValueDesc: "mainnet"
name: "network" }: Option[string]
dataDir* {.
desc: "The directory where nimbus will store all blockchain data"
defaultValue: config.defaultDataDir()
defaultValueDesc: ""
abbr: "d"
name: "data-dir" }: OutDir
validatorsDirFlag* {.
desc: "A directory containing validator keystores"
name: "validators-dir" }: Option[InputDir]
secretsDirFlag* {.
desc: "A directory containing validator keystore passwords"
name: "secrets-dir" }: Option[InputDir]
walletsDirFlag* {.
desc: "A directory containing wallet files"
name: "wallets-dir" }: Option[InputDir]
web3Urls* {.
desc: "One or more Web3 provider URLs used for obtaining deposit contract data"
name: "web3-url" }: seq[string]
web3Mode* {.
hidden
defaultValue: Web3Mode.auto
desc: "URL of the Web3 server to observe Eth1"
name: "web3-mode" }: Web3Mode
nonInteractive* {.
desc: "Do not display interative prompts. Quit on missing configuration"
name: "non-interactive" }: bool
netKeyFile* {.
desc: "Source of network (secp256k1) private key file " &
"(random|<path>)"
defaultValue: "random",
name: "netkey-file" }: string
netKeyInsecurePassword* {.
desc: "Use pre-generated INSECURE password for network private key file"
defaultValue: false,
name: "insecure-netkey-password" }: bool
agentString* {.
defaultValue: "nimbus",
desc: "Node agent string which is used as identifier in network"
name: "agent-string" }: string
subscribeAllSubnets* {.
defaultValue: false,
desc: "Subscribe to all attestation subnet topics when gossiping"
name: "subscribe-all-subnets" }: bool
slashingDbKind* {.
hidden
defaultValue: SlashingDbKind.v2
desc: "The slashing DB flavour to use"
name: "slashing-db-kind" }: SlashingDbKind
numThreads* {.
defaultValue: 1,
desc: "Number of threads used (0 to use all logical threads)"
name: "num-threads" }: int
case cmd* {.
command
defaultValue: noCommand }: BNStartUpCmd
of noCommand:
bootstrapNodes* {.
desc: "Specifies one or more bootstrap nodes to use when connecting to the network"
abbr: "b"
name: "bootstrap-node" }: seq[string]
bootstrapNodesFile* {.
desc: "Specifies a line-delimited file of bootstrap Ethereum network addresses"
defaultValue: ""
name: "bootstrap-file" }: InputFile
listenAddress* {.
desc: "Listening address for the Ethereum LibP2P and Discovery v5 traffic"
defaultValue: defaultListenAddress
defaultValueDesc: "0.0.0.0"
name: "listen-address" }: ValidIpAddress
tcpPort* {.
desc: "Listening TCP port for Ethereum LibP2P traffic"
defaultValue: defaultEth2TcpPort
defaultValueDesc: "9000"
name: "tcp-port" }: Port
udpPort* {.
desc: "Listening UDP port for node discovery"
defaultValue: defaultEth2TcpPort
defaultValueDesc: "9000"
name: "udp-port" }: Port
maxPeers* {.
desc: "The maximum number of peers to connect to"
defaultValue: 160 # 5 (fanout) * 64 (subnets) / 2 (subs) for a heathy mesh
name: "max-peers" }: int
nat* {.
desc: "Specify method to use for determining public address. " &
"Must be one of: any, none, upnp, pmp, extip:<IP>"
defaultValue: NatConfig(hasExtIp: false, nat: NatAny)
defaultValueDesc: "any"
name: "nat" .}: NatConfig
enrAutoUpdate* {.
desc: "Discovery can automatically update its ENR with the IP address " &
"and UDP port as seen by other nodes it communicates with. " &
"This option allows to enable/disable this functionality"
defaultValue: false
name: "enr-auto-update" .}: bool
weakSubjectivityCheckpoint* {.
desc: "Weak subjectivity checkpoint in the format block_root:epoch_number"
name: "weak-subjectivity-checkpoint" }: Option[Checkpoint]
finalizedCheckpointState* {.
desc: "SSZ file specifying a recent finalized state"
name: "finalized-checkpoint-state" }: Option[InputFile]
finalizedCheckpointBlock* {.
desc: "SSZ file specifying a recent finalized block"
name: "finalized-checkpoint-block" }: Option[InputFile]
nodeName* {.
desc: "A name for this node that will appear in the logs. " &
"If you set this to 'auto', a persistent automatically generated ID will be selected for each --data-dir folder"
defaultValue: ""
name: "node-name" }: string
graffiti* {.
desc: "The graffiti value that will appear in proposed blocks. " &
"You can use a 0x-prefixed hex encoded string to specify raw bytes"
name: "graffiti" }: Option[GraffitiBytes]
verifyFinalization* {.
desc: "Specify whether to verify finalization occurs on schedule, for testing"
defaultValue: false
name: "verify-finalization" }: bool
stopAtEpoch* {.
desc: "A positive epoch selects the epoch at which to stop"
defaultValue: 0
name: "stop-at-epoch" }: uint64
metricsEnabled* {.
desc: "Enable the metrics server"
defaultValue: false
name: "metrics" }: bool
metricsAddress* {.
desc: "Listening address of the metrics server"
defaultValue: defaultAdminListenAddress
defaultValueDesc: "127.0.0.1"
name: "metrics-address" }: ValidIpAddress
metricsPort* {.
desc: "Listening HTTP port of the metrics server"
defaultValue: 8008
name: "metrics-port" }: Port
statusBarEnabled* {.
desc: "Display a status bar at the bottom of the terminal screen"
defaultValue: true
name: "status-bar" }: bool
statusBarContents* {.
desc: "Textual template for the contents of the status bar"
defaultValue: "peers: $connected_peers;" &
"finalized: $finalized_root:$finalized_epoch;" &
"head: $head_root:$head_epoch:$head_epoch_slot;" &
"time: $epoch:$epoch_slot ($slot);" &
"sync: $sync_status|" &
"ETH: $attached_validators_balance"
defaultValueDesc: ""
name: "status-bar-contents" }: string
rpcEnabled* {.
desc: "Enable the JSON-RPC server"
defaultValue: false
name: "rpc" }: bool
rpcPort* {.
desc: "HTTP port for the JSON-RPC service"
defaultValue: defaultEth2RpcPort
defaultValueDesc: "9190"
name: "rpc-port" }: Port
rpcAddress* {.
desc: "Listening address of the RPC server"
defaultValue: defaultAdminListenAddress
defaultValueDesc: "127.0.0.1"
name: "rpc-address" }: ValidIpAddress
restEnabled* {.
desc: "Enable the REST (BETA version) server"
defaultValue: false
name: "rest" }: bool
restPort* {.
desc: "Port for the REST (BETA version) server"
defaultValue: DefaultEth2RestPort
defaultValueDesc: "5052"
name: "rest-port" }: Port
restAddress* {.
desc: "Listening address of the REST (BETA version) server"
defaultValue: defaultAdminListenAddress
defaultValueDesc: "127.0.0.1"
name: "rest-address" }: ValidIpAddress
inProcessValidators* {.
desc: "Disable the push model (the beacon node tells a signing process with the private keys of the validators what to sign and when) and load the validators in the beacon node itself"
defaultValue: true # the use of the nimbus_signing_process binary by default will be delayed until async I/O over stdin/stdout is developed for the child process.
name: "in-process-validators" }: bool
discv5Enabled* {.
desc: "Enable Discovery v5"
defaultValue: true
name: "discv5" }: bool
dumpEnabled* {.
desc: "Write SSZ dumps of blocks, attestations and states to data dir"
defaultValue: false
name: "dump" }: bool
directPeers* {.
desc: "The list of priviledged, secure and known peers to connect and maintain the connection to, this requires a not random netkey-file. In the complete multiaddress format like: /ip4/<address>/tcp/<port>/p2p/<peerId-public-key>. Peering agreements are established out of band and must be reciprocal."
name: "direct-peer" .}: seq[string]
doppelgangerDetection* {.
desc: "If enabled, the beacon node prudently listens for 2 epochs for attestations from a validator with the same index (a doppelganger), before sending an attestation itself. This protects against slashing (due to double-voting) but means you will miss two attestations when restarting."
defaultValue: true
name: "doppelganger-detection"
}: bool
of createTestnet:
testnetDepositsFile* {.
desc: "A LaunchPad deposits file for the genesis state validators"
name: "deposits-file" }: InputFile
totalValidators* {.
desc: "The number of validator deposits in the newly created chain"
name: "total-validators" }: uint64
bootstrapAddress* {.
desc: "The public IP address that will be advertised as a bootstrap node for the testnet"
defaultValue: init(ValidIpAddress, "127.0.0.1")
defaultValueDesc: "127.0.0.1"
name: "bootstrap-address" }: ValidIpAddress
bootstrapPort* {.
desc: "The TCP/UDP port that will be used by the bootstrap node"
defaultValue: defaultEth2TcpPort
defaultValueDesc: "9000"
name: "bootstrap-port" }: Port
genesisOffset* {.
desc: "Seconds from now to add to genesis time"
defaultValue: 5
name: "genesis-offset" }: int
outputGenesis* {.
desc: "Output file where to write the initial state snapshot"
name: "output-genesis" }: OutFile
outputBootstrapFile* {.
desc: "Output file with list of bootstrap nodes for the network"
name: "output-bootstrap-file" }: OutFile
of wallets:
case walletsCmd* {.command.}: WalletsCmd
of WalletsCmd.create:
nextAccount* {.
desc: "Initial value for the 'nextaccount' property of the wallet"
name: "next-account" }: Option[Natural]
createdWalletNameFlag* {.
desc: "An easy-to-remember name for the wallet of your choice"
name: "name"}: Option[WalletName]
createdWalletFileFlag* {.
desc: "Output wallet file"
name: "out" }: Option[OutFile]
of WalletsCmd.restore:
restoredWalletNameFlag* {.
desc: "An easy-to-remember name for the wallet of your choice"
name: "name"}: Option[WalletName]
restoredWalletFileFlag* {.
desc: "Output wallet file"
name: "out" }: Option[OutFile]
restoredDepositsCount* {.
desc: "Expected number of deposits to recover. If not specified, " &
"Nimbus will try to guess the number by inspecting the latest " &
"beacon state"
name: "deposits".}: Option[Natural]
of WalletsCmd.list:
discard
of deposits:
case depositsCmd* {.command.}: DepositsCmd
of DepositsCmd.createTestnetDeposits:
totalDeposits* {.
desc: "Number of deposits to generate"
defaultValue: 1
name: "count" }: int
existingWalletId* {.
desc: "An existing wallet ID. If not specified, a new wallet will be created"
name: "wallet" }: Option[WalletName]
outValidatorsDir* {.
desc: "Output folder for validator keystores"
defaultValue: "validators"
name: "out-validators-dir" }: string
outSecretsDir* {.
desc: "Output folder for randomly generated keystore passphrases"
defaultValue: "secrets"
name: "out-secrets-dir" }: string
outDepositsFile* {.
desc: "The name of generated deposits file"
name: "out-deposits-file" }: Option[OutFile]
newWalletNameFlag* {.
desc: "An easy-to-remember name for the wallet of your choice"
name: "new-wallet-name" }: Option[WalletName]
newWalletFileFlag* {.
desc: "Output wallet file"
name: "new-wallet-file" }: Option[OutFile]
#[
of DepositsCmd.status:
discard
]#
of DepositsCmd.`import`:
importedDepositsDir* {.
argument
desc: "A directory with keystores to import" }: Option[InputDir]
of DepositsCmd.exit:
exitedValidator* {.
name: "validator"
desc: "Validator index or a public key of the exited validator" }: string
rpcUrlForExit* {.
desc: "URL of the beacon node JSON-RPC service"
defaultValue: parseUri("http://localhost:" & $defaultEth2RpcPort)
defaultValueDesc: "http://localhost:9190"
name: "rpc-url" }: Uri
exitAtEpoch* {.
name: "epoch"
desc: "The desired exit epoch" }: Option[uint64]
of record:
case recordCmd* {.command.}: RecordCmd
of RecordCmd.create:
ipExt* {.
desc: "External IP address"
name: "ip" .}: ValidIpAddress
tcpPortExt* {.
desc: "External TCP port"
name: "tcp-port" .}: Port
udpPortExt* {.
desc: "External UDP port"
name: "udp-port" .}: Port
seqNumber* {.
desc: "Record sequence number"
defaultValue: 1,
name: "seq-number" .}: uint
fields* {.
desc: "Additional record key pairs, provide as <string>:<bytes in hex>"
name: "field" .}: seq[(string)]
of RecordCmd.print:
recordPrint* {.
argument
desc: "ENR URI of the record to print"
name: "enr" .}: Record
of web3:
case web3Cmd* {.command.}: Web3Cmd
of Web3Cmd.test:
web3TestUrl* {.
argument
desc: "The web3 provider URL to test"
name: "url" }: Uri
of slashingdb:
case slashingdbCmd* {.command.}: SlashProtCmd
of SlashProtCmd.`import`:
importedInterchangeFile* {.
desc: "EIP-3076 slashing protection interchange file to import"
argument .}: InputFile
of SlashProtCmd.`export`:
exportedValidators* {.
desc: "Limit the export to specific validators " &
"(specified as numeric indices or public keys)"
abbr: "v"
name: "validator" }: seq[PubKey0x]
exportedInterchangeFile* {.
desc: "EIP-3076 slashing protection interchange file to export"
argument }: OutFile
ValidatorClientConf* = object
logLevel* {.
desc: "Sets the log level"
defaultValue: "INFO"
name: "log-level" }: string
logFile* {.
desc: "Specifies a path for the written Json log file"
name: "log-file" }: Option[OutFile]
dataDir* {.
desc: "The directory where nimbus will store all blockchain data"
defaultValue: config.defaultDataDir()
defaultValueDesc: ""
abbr: "d"
name: "data-dir" }: OutDir
nonInteractive* {.
desc: "Do not display interative prompts. Quit on missing configuration"
name: "non-interactive" }: bool
validatorsDirFlag* {.
desc: "A directory containing validator keystores"
name: "validators-dir" }: Option[InputDir]
secretsDirFlag* {.
desc: "A directory containing validator keystore passwords"
name: "secrets-dir" }: Option[InputDir]
case cmd* {.
command
defaultValue: VCNoCommand }: VCStartUpCmd
of VCNoCommand:
graffiti* {.
desc: "The graffiti value that will appear in proposed blocks. " &
"You can use a 0x-prefixed hex encoded string to specify " &
"raw bytes"
name: "graffiti" }: Option[GraffitiBytes]
stopAtEpoch* {.
desc: "A positive epoch selects the epoch at which to stop"
defaultValue: 0
name: "stop-at-epoch" }: uint64
beaconNodes* {.
desc: "URL addresses to one or more beacon node HTTP REST APIs",
name: "beacon-node" }: seq[string]
proc defaultDataDir*(config: BeaconNodeConf|ValidatorClientConf): string =
let dataDir = when defined(windows):
"AppData" / "Roaming" / "Nimbus"
elif defined(macosx):
"Library" / "Application Support" / "Nimbus"
else:
".cache" / "nimbus"
getHomeDir() / dataDir / "BeaconNode"
func dumpDir*(config: BeaconNodeConf|ValidatorClientConf): string =
config.dataDir / "dump"
func dumpDirInvalid*(config: BeaconNodeConf|ValidatorClientConf): string =
config.dumpDir / "invalid" # things that failed validation
func dumpDirIncoming*(config: BeaconNodeConf|ValidatorClientConf): string =
config.dumpDir / "incoming" # things that couldn't be validated (missingparent etc)
func dumpDirOutgoing*(config: BeaconNodeConf|ValidatorClientConf): string =
config.dumpDir / "outgoing" # things we produced
proc createDumpDirs*(config: BeaconNodeConf) =
if config.dumpEnabled:
let resInv = secureCreatePath(config.dumpDirInvalid)
if resInv.isErr():
warn "Could not create dump directory", path = config.dumpDirInvalid
let resInc = secureCreatePath(config.dumpDirIncoming)
if resInc.isErr():
warn "Could not create dump directory", path = config.dumpDirIncoming
let resOut = secureCreatePath(config.dumpDirOutgoing)
if resOut.isErr():
warn "Could not create dump directory", path = config.dumpDirOutgoing
func parseCmdArg*(T: type GraffitiBytes, input: TaintedString): T
{.raises: [ValueError, Defect].} =
GraffitiBytes.init(string input)
func completeCmdArg*(T: type GraffitiBytes, input: TaintedString): seq[string] =
return @[]
func parseCmdArg*(T: type BlockHashOrNumber, input: TaintedString): T
{.raises: [ValueError, Defect].} =
init(BlockHashOrNumber, string input)
func completeCmdArg*(T: type BlockHashOrNumber, input: TaintedString): seq[string] =
return @[]
func parseCmdArg*(T: type Uri, input: TaintedString): T
{.raises: [ValueError, Defect].} =
parseUri(input.string)
func completeCmdArg*(T: type Uri, input: TaintedString): seq[string] =
return @[]
func parseCmdArg*(T: type PubKey0x, input: TaintedString): T
{.raises: [ValueError, Defect].} =
PubKey0x(hexToPaddedByteArray[RawPubKeySize](input.string))
func completeCmdArg*(T: type PubKey0x, input: TaintedString): seq[string] =
return @[]
func parseCmdArg*(T: type Checkpoint, input: TaintedString): T
{.raises: [ValueError, Defect].} =
let sepIdx = find(input.string, ':')
if sepIdx == -1:
raise newException(ValueError,
"The weak subjectivity checkpoint must be provided in the `block_root:epoch_number` format")
T(root: Eth2Digest.fromHex(input[0 ..< sepIdx]),
epoch: parseBiggestUInt(input[sepIdx .. ^1]).Epoch)
func completeCmdArg*(T: type Checkpoint, input: TaintedString): seq[string] =
return @[]
proc isPrintable(rune: Rune): bool =
# This can be eventually replaced by the `unicodeplus` package, but a single
# proc does not justify the extra dependencies at the moment:
# https://github.com/nitely/nim-unicodeplus
# https://github.com/nitely/nim-segmentation
rune == Rune(0x20) or unicodeCategory(rune) notin ctgC+ctgZ
func parseCmdArg*(T: type WalletName, input: TaintedString): T
{.raises: [ValueError, Defect].} =
if input.len == 0:
raise newException(ValueError, "The wallet name should not be empty")
if input[0] == '_':
raise newException(ValueError, "The wallet name should not start with an underscore")
for rune in runes(input.string):
if not rune.isPrintable:
raise newException(ValueError, "The wallet name should consist only of printable characters")
# From the Unicode Normalization FAQ (https://unicode.org/faq/normalization.html):
# NFKC is the preferred form for identifiers, especially where there are security concerns
# (see UTR #36 http://www.unicode.org/reports/tr36/)
return T(toNFKC(input))
func completeCmdArg*(T: type WalletName, input: TaintedString): seq[string] =
return @[]
proc parseCmdArg*(T: type enr.Record, p: TaintedString): T
{.raises: [ConfigurationError, Defect].} =
if not fromURI(result, p):
raise newException(ConfigurationError, "Invalid ENR")
proc completeCmdArg*(T: type enr.Record, val: TaintedString): seq[string] =
return @[]
func validatorsDir*(config: BeaconNodeConf|ValidatorClientConf): string =
string config.validatorsDirFlag.get(InputDir(config.dataDir / "validators"))
func secretsDir*(config: BeaconNodeConf|ValidatorClientConf): string =
string config.secretsDirFlag.get(InputDir(config.dataDir / "secrets"))
func walletsDir*(config: BeaconNodeConf): string =
if config.walletsDirFlag.isSome:
config.walletsDirFlag.get.string
else:
config.dataDir / "wallets"
func outWalletName*(config: BeaconNodeConf): Option[WalletName] =
proc fail {.noReturn.} =
raiseAssert "outWalletName should be used only in the right context"
case config.cmd
of wallets:
case config.walletsCmd
of WalletsCmd.create: config.createdWalletNameFlag
of WalletsCmd.restore: config.restoredWalletNameFlag
of WalletsCmd.list: fail()
of deposits:
case config.depositsCmd
of DepositsCmd.createTestnetDeposits: config.newWalletNameFlag
else: fail()
else:
fail()
func outWalletFile*(config: BeaconNodeConf): Option[OutFile] =
proc fail {.noReturn.} =
raiseAssert "outWalletName should be used only in the right context"
case config.cmd
of wallets:
case config.walletsCmd
of WalletsCmd.create: config.createdWalletFileFlag
of WalletsCmd.restore: config.restoredWalletFileFlag
of WalletsCmd.list: fail()
of deposits:
case config.depositsCmd
of DepositsCmd.createTestnetDeposits: config.newWalletFileFlag
else: fail()
else:
fail()
func databaseDir*(config: BeaconNodeConf|ValidatorClientConf): string =
config.dataDir / "db"
template writeValue*(writer: var JsonWriter,
value: TypedInputFile|InputFile|InputDir|OutPath|OutDir|OutFile) =
writer.writeValue(string value)
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