73 lines
2.7 KiB
Nim
73 lines
2.7 KiB
Nim
# beacon_chain
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# Copyright (c) 2022 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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# https://notes.ethereum.org/@9AeMAlpyQYaAAyuj47BzRw/rkwW3ceVY
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# Monitor traffic: socat -v TCP-LISTEN:9550,fork TCP-CONNECT:127.0.0.1:8550
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import
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std/options,
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stew/results,
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chronos,
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../beacon_chain/eth1/eth1_monitor
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when (NimMajor, NimMinor) < (1, 4):
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{.push raises: [Defect].}
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else:
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{.push raises: [].}
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from std/os import paramCount, paramStr
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from nimcrypto/utils import fromHex
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from web3/engine_api_types import PayloadExecutionStatus
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from ../beacon_chain/networking/network_metadata import Eth1Network
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from ../beacon_chain/spec/datatypes/base import ZERO_HASH
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from ../beacon_chain/spec/presets import Eth1Address, defaultRuntimeConfig
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# TODO factor this out and have a version with the result of the JWT secret
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# slurp for testing purposes
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proc readJwtSecret(jwtSecretFile: string): Result[seq[byte], cstring] =
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# https://github.com/ethereum/execution-apis/blob/v1.0.0-beta.1/src/engine/authentication.md#key-distribution
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# If such a parameter is given, but the file cannot be read, or does not
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# contain a hex-encoded key of 256 bits, the client should treat this as an
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# error: either abort the startup, or show error and continue without
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# exposing the authenticated port.
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const MIN_SECRET_LEN = 32
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try:
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let lines = readLines(jwtSecretFile, 1)
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if lines.len > 0:
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# Secret JWT key is parsed in constant time using nimcrypto:
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# https://github.com/cheatfate/nimcrypto/pull/44
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let secret = utils.fromHex(lines[0])
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if secret.len >= MIN_SECRET_LEN:
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ok(secret)
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else:
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err("JWT secret not at least 256 bits")
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else:
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err("JWT secret file empty")
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except IOError as exc:
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err("JWT secret file could not be read from")
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proc run() {.async.} =
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if paramCount() < 2:
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echo "args are: web3url jwtsecretfilename"
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let
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eth1Monitor = Eth1Monitor.init(
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defaultRuntimeConfig, db = nil, nil, @[paramStr(1)],
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none(DepositContractSnapshot), none(Eth1Network), false,
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some readJwtSecret(paramStr(2)).get)
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await eth1Monitor.ensureDataProvider()
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try:
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await eth1Monitor.exchangeTransitionConfiguration()
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except ValueError as exc:
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# Expected, since nothing here sets up the Nimbus TTD correctly
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echo "exchangeTransitionConfiguration ValueError: " & exc.msg
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echo "Invalid TTD errors are fine in this context"
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waitFor run()
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