612 lines
24 KiB
Nim
612 lines
24 KiB
Nim
# beacon_chain
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# Copyright (c) 2021-2024 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: [].}
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# NOTE: This module has been used in both `beacon_node` and `validator_client`,
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# please keep imports clear of `rest_utils` or any other module which imports
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# beacon node's specific networking code.
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import std/[tables, strutils, uri]
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import chronos, chronicles, confutils,
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results, stew/[base10, io2], blscurve, presto
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import ".."/spec/[keystore, crypto]
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import ".."/spec/eth2_apis/rest_keymanager_types
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import ".."/validators/[slashing_protection, keystore_management,
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validator_pool]
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import ".."/rpc/rest_constants
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export rest_constants, results
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func validateKeymanagerApiQueries*(key: string, value: string): int =
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# There are no queries to validate
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return 0
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proc listLocalValidators*(validatorPool: ValidatorPool): seq[KeystoreInfo] {.
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raises: [].} =
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var validators: seq[KeystoreInfo]
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for item in validatorPool:
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if item.kind == ValidatorKind.Local:
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validators.add KeystoreInfo(
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validating_pubkey: item.pubkey,
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derivation_path: string(item.data.path),
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readonly: false
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)
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validators
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proc listRemoteValidators*(
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validatorPool: ValidatorPool): seq[RemoteKeystoreInfo] {.
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raises: [].} =
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var validators: seq[RemoteKeystoreInfo]
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for item in validatorPool:
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if item.kind == ValidatorKind.Remote and item.data.remotes.len == 1:
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validators.add RemoteKeystoreInfo(
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pubkey: item.pubkey,
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url: HttpHostUri(item.data.remotes[0].url)
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)
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validators
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proc listRemoteDistributedValidators*(
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validatorPool: ValidatorPool): seq[DistributedKeystoreInfo] {.
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raises: [].} =
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var validators: seq[DistributedKeystoreInfo]
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for item in validatorPool:
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if item.kind == ValidatorKind.Remote and item.data.remotes.len > 1:
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validators.add DistributedKeystoreInfo(
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pubkey: item.pubkey,
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remotes: item.data.remotes
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)
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validators
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proc keymanagerApiError(status: HttpCode, msg: string): RestApiResponse =
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let data =
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block:
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var default: string
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try:
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var stream = memoryOutput()
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var writer = JsonWriter[RestJson].init(stream)
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writer.beginRecord()
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writer.writeField("message", msg)
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writer.endRecord()
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stream.getOutput(string)
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except SerializationError:
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default
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except IOError:
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default
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RestApiResponse.error(status, data, "application/json")
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proc checkAuthorization*(
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request: HttpRequestRef,
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host: KeymanagerHost): Result[void, AuthorizationError] =
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let authorizations = request.headers.getList("authorization")
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if authorizations.len > 0:
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for authHeader in authorizations:
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let parts = authHeader.split(' ', maxsplit = 1)
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if parts.len == 2 and parts[0] == "Bearer":
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if parts[1] == host.keymanagerToken:
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return ok()
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else:
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return err incorrectToken
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return err missingBearerScheme
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else:
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return err noAuthorizationHeader
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proc authErrorResponse(error: AuthorizationError): RestApiResponse =
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let status = case error:
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of missingBearerScheme, noAuthorizationHeader:
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Http401
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of incorrectToken:
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Http403
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keymanagerApiError(status, InvalidAuthorizationError)
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proc validateUri*(url: string): Result[Uri, cstring] =
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let surl = parseUri(url)
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if surl.scheme notin ["http", "https"]:
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return err("Incorrect URL scheme")
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if len(surl.hostname) == 0:
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return err("Empty URL hostname")
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ok(surl)
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proc handleRemoveValidatorReq(host: KeymanagerHost,
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key: ValidatorPubKey): RemoteKeystoreStatus =
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let res = removeValidator(host.validatorPool[],
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host.validatorsDir, host.secretsDir,
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key, KeystoreKind.Remote)
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if res.isOk:
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case res.value()
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of RemoveValidatorStatus.deleted:
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return RemoteKeystoreStatus(status: KeystoreStatus.deleted)
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of RemoveValidatorStatus.notFound:
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return RemoteKeystoreStatus(status: KeystoreStatus.notFound)
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else:
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return RemoteKeystoreStatus(status: KeystoreStatus.error,
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message: Opt.some($res.error()))
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proc handleAddRemoteValidatorReq(host: KeymanagerHost,
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keystore: RemoteKeystore): RequestItemStatus =
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let res = importKeystore(host.validatorPool[], host.validatorsDir, keystore)
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if res.isOk:
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host.addValidator(
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res.get(), host.getValidatorWithdrawalAddress(keystore.pubkey))
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RequestItemStatus(status: $KeystoreStatus.imported)
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else:
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case res.error().status
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of AddValidatorStatus.failed:
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RequestItemStatus(status: $KeystoreStatus.error,
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message: $res.error().message)
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of AddValidatorStatus.existingArtifacts:
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RequestItemStatus(status: $KeystoreStatus.duplicate)
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proc installKeymanagerHandlers*(router: var RestRouter, host: KeymanagerHost) =
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# https://ethereum.github.io/keymanager-APIs/#/Keymanager/ListKeys
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router.api2(MethodGet, "/eth/v1/keystores") do () -> RestApiResponse:
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let authStatus = checkAuthorization(request, host)
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if authStatus.isErr():
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return authErrorResponse authStatus.error
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let response = GetKeystoresResponse(
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data: listLocalValidators(host.validatorPool[]))
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RestApiResponse.jsonResponsePlain(response)
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# https://ethereum.github.io/keymanager-APIs/#/Keymanager/ImportKeystores
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router.api2(MethodPost, "/eth/v1/keystores") do (
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contentBody: Option[ContentBody]) -> RestApiResponse:
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let authStatus = checkAuthorization(request, host)
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if authStatus.isErr():
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return authErrorResponse authStatus.error
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let request =
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block:
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if contentBody.isNone():
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return keymanagerApiError(Http404, EmptyRequestBodyError)
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let dres = decodeBody(KeystoresAndSlashingProtection, contentBody.get())
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if dres.isErr():
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return keymanagerApiError(Http400, InvalidKeystoreObjects)
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dres.get()
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if request.slashing_protection.isSome():
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let slashing_protection = request.slashing_protection.get()
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let nodeSPDIR =
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try:
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toSPDIR(host.validatorPool[].slashingProtection)
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except IOError as exc:
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return keymanagerApiError(
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Http500, "Internal server error; " & $exc.msg)
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if nodeSPDIR.metadata.genesis_validators_root.Eth2Digest !=
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slashing_protection.metadata.genesis_validators_root.Eth2Digest:
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return keymanagerApiError(Http400,
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"The slashing protection database and imported file refer to " &
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"different blockchains.")
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let res =
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try:
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inclSPDIR(host.validatorPool[].slashingProtection,
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slashing_protection)
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except SerializationError as exc:
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return keymanagerApiError(
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Http500, "Internal server error; Failed to import slashing " &
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"protection data, reason: " &
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exc.formatMsg("slashing_protection"))
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except IOError as exc:
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return keymanagerApiError(
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Http500, "Internal server error; Failed to import slashing " &
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"protection data, reason: " & $exc.msg)
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if res == siFailure:
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return keymanagerApiError(Http500,
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"Internal server error; Failed to import slashing protection data")
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var response: PostKeystoresResponse
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for index, item in request.keystores:
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let res = importKeystore(host.validatorPool[], host.rng[],
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host.validatorsDir, host.secretsDir,
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item, request.passwords[index],
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host.keystoreCache)
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if res.isErr():
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let failure = res.error()
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case failure.status
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of AddValidatorStatus.failed:
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response.data.add(
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RequestItemStatus(status: $KeystoreStatus.error,
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message: failure.message))
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of AddValidatorStatus.existingArtifacts:
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response.data.add(
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RequestItemStatus(status: $KeystoreStatus.duplicate))
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else:
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host.addValidator(
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res.get(), host.getValidatorWithdrawalAddress(res.get.pubkey))
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response.data.add(
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RequestItemStatus(status: $KeystoreStatus.imported))
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RestApiResponse.jsonResponsePlain(response)
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# https://ethereum.github.io/keymanager-APIs/#/Keymanager/DeleteKeys
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router.api2(MethodDelete, "/eth/v1/keystores") do (
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contentBody: Option[ContentBody]) -> RestApiResponse:
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let authStatus = checkAuthorization(request, host)
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if authStatus.isErr():
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return authErrorResponse authStatus.error
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let keys =
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block:
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if contentBody.isNone():
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return keymanagerApiError(Http404, EmptyRequestBodyError)
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let dres = decodeBody(DeleteKeystoresBody, contentBody.get())
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if dres.isErr():
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return keymanagerApiError(Http400, InvalidValidatorPublicKey)
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dres.get().pubkeys
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var
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response: DeleteKeystoresResponse
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nodeSPDIR =
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try:
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toSPDIR(host.validatorPool[].slashingProtection)
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except IOError as exc:
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return keymanagerApiError(
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Http500, "Internal server error; " & $exc.msg)
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# Hash table to keep the removal status of all keys form request
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keysAndDeleteStatus = initTable[PubKeyBytes, RequestItemStatus]()
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responseSPDIR: SPDIR
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responseSPDIR.metadata = nodeSPDIR.metadata
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for index, key in keys:
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let
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res = removeValidator(host.validatorPool[],
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host.validatorsDir, host.secretsDir,
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key, KeystoreKind.Local)
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pubkey = key.blob.PubKey0x.PubKeyBytes
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if res.isOk:
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case res.value()
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of RemoveValidatorStatus.deleted:
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keysAndDeleteStatus[pubkey] =
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RequestItemStatus(status: $KeystoreStatus.deleted)
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# At first all keys with status missing directory after removal receive
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# status 'not_found'
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of RemoveValidatorStatus.notFound:
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keysAndDeleteStatus[pubkey] =
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RequestItemStatus(status: $KeystoreStatus.notFound)
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else:
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keysAndDeleteStatus[pubkey] =
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RequestItemStatus(status: $KeystoreStatus.error,
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message: $res.error())
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# If we discover slashing protection data for a validator that was not
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# found, this means the validator was active in the past, so we must
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# respond with `not_active`:
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for validator in nodeSPDIR.data:
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keysAndDeleteStatus.withValue(validator.pubkey.PubKeyBytes,
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foundKeystore) do:
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responseSPDIR.data.add(validator)
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if foundKeystore.status == $KeystoreStatus.notFound:
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foundKeystore.status = $KeystoreStatus.notActive
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for index, key in keys:
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response.data.add(
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keysAndDeleteStatus.getOrDefault(key.blob.PubKey0x.PubKeyBytes))
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response.slashing_protection = RestJson.encode(responseSPDIR)
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RestApiResponse.jsonResponsePlain(response)
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# https://ethereum.github.io/keymanager-APIs/#/Remote%20Key%20Manager/ListRemoteKeys
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router.api2(MethodGet, "/eth/v1/remotekeys") do () -> RestApiResponse:
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let authStatus = checkAuthorization(request, host)
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if authStatus.isErr():
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return authErrorResponse authStatus.error
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let response = GetRemoteKeystoresResponse(
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data: listRemoteValidators(host.validatorPool[]))
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RestApiResponse.jsonResponsePlain(response)
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# https://ethereum.github.io/keymanager-APIs/#/Remote%20Key%20Manager/ImportRemoteKeys
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router.api2(MethodPost, "/eth/v1/remotekeys") do (
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contentBody: Option[ContentBody]) -> RestApiResponse:
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let authStatus = checkAuthorization(request, host)
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if authStatus.isErr():
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return authErrorResponse authStatus.error
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let keys =
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block:
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if contentBody.isNone():
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return keymanagerApiError(Http404, EmptyRequestBodyError)
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let dres = decodeBody(ImportRemoteKeystoresBody, contentBody.get())
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if dres.isErr():
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return keymanagerApiError(Http400, InvalidKeystoreObjects)
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dres.get().remote_keys
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var response: PostKeystoresResponse
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for index, key in keys:
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let
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remoteInfo = RemoteSignerInfo(
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url: key.url,
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pubkey: key.pubkey,
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id: 0)
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keystore = RemoteKeystore(
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version: 1'u64, remoteType: RemoteSignerType.Web3Signer,
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pubkey: key.pubkey, remotes: @[remoteInfo])
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response.data.add handleAddRemoteValidatorReq(host, keystore)
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RestApiResponse.jsonResponsePlain(response)
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# https://ethereum.github.io/keymanager-APIs/#/Remote%20Key%20Manager/DeleteRemoteKeys
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router.api2(MethodDelete, "/eth/v1/remotekeys") do (
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contentBody: Option[ContentBody]) -> RestApiResponse:
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let authStatus = checkAuthorization(request, host)
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if authStatus.isErr():
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return authErrorResponse authStatus.error
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let keys =
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block:
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if contentBody.isNone():
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return keymanagerApiError(Http404, EmptyRequestBodyError)
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let dres = decodeBody(DeleteKeystoresBody, contentBody.get())
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if dres.isErr():
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return keymanagerApiError(Http400, InvalidValidatorPublicKey)
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dres.get().pubkeys
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var response: DeleteRemoteKeystoresResponse
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for index, key in keys:
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response.data.add handleRemoveValidatorReq(host, key)
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RestApiResponse.jsonResponsePlain(response)
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# https://ethereum.github.io/keymanager-APIs/#/Fee%20Recipient/ListFeeRecipient
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router.api2(MethodGet, "/eth/v1/validator/{pubkey}/feerecipient") do (
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pubkey: ValidatorPubKey) -> RestApiResponse:
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let authStatus = checkAuthorization(request, host)
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if authStatus.isErr():
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return authErrorResponse authStatus.error
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let
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pubkey = pubkey.valueOr:
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return keymanagerApiError(Http400, InvalidValidatorPublicKey)
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perValidatorDefaultFeeRecipient = getPerValidatorDefaultFeeRecipient(
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host.defaultFeeRecipient,
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host.getValidatorWithdrawalAddress(pubkey))
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ethaddress = host.getSuggestedFeeRecipient(
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pubkey, perValidatorDefaultFeeRecipient)
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if ethaddress.isOk:
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RestApiResponse.jsonResponse(ListFeeRecipientResponse(
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pubkey: pubkey,
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ethaddress: ethaddress.get))
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else:
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case ethaddress.error
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of noSuchValidator:
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keymanagerApiError(Http404, "No matching validator found")
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of malformedConfigFile:
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keymanagerApiError(Http500, "Error reading fee recipient file")
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# https://ethereum.github.io/keymanager-APIs/#/Fee%20Recipient/SetFeeRecipient
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router.api2(MethodPost, "/eth/v1/validator/{pubkey}/feerecipient") do (
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pubkey: ValidatorPubKey,
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contentBody: Option[ContentBody]) -> RestApiResponse:
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let authStatus = checkAuthorization(request, host)
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if authStatus.isErr():
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return authErrorResponse authStatus.error
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let
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pubkey = pubkey.valueOr:
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return keymanagerApiError(Http400, InvalidValidatorPublicKey)
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feeRecipientReq =
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block:
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if contentBody.isNone():
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return keymanagerApiError(Http400, InvalidFeeRecipientRequestError)
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let dres = decodeBody(SetFeeRecipientRequest, contentBody.get())
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if dres.isErr():
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return keymanagerApiError(Http400, InvalidFeeRecipientRequestError)
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dres.get()
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status = host.setFeeRecipient(pubkey, feeRecipientReq.ethaddress)
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if status.isOk:
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RestApiResponse.response("", Http202, "text/plain")
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else:
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keymanagerApiError(
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Http500, "Failed to set fee recipient: " & status.error)
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# https://ethereum.github.io/keymanager-APIs/#/Fee%20Recipient/DeleteFeeRecipient
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router.api2(MethodDelete, "/eth/v1/validator/{pubkey}/feerecipient") do (
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pubkey: ValidatorPubKey) -> RestApiResponse:
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let authStatus = checkAuthorization(request, host)
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if authStatus.isErr():
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return authErrorResponse authStatus.error
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let
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pubkey = pubkey.valueOr:
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return keymanagerApiError(Http400, InvalidValidatorPublicKey)
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res = host.removeFeeRecipientFile(pubkey)
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if res.isOk:
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RestApiResponse.response("", Http204, "text/plain")
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else:
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keymanagerApiError(
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Http500, "Failed to remove fee recipient file: " & res.error)
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# https://ethereum.github.io/keymanager-APIs/#/Gas%20Limit/getGasLimit
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router.api2(MethodGet, "/eth/v1/validator/{pubkey}/gas_limit") do (
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pubkey: ValidatorPubKey) -> RestApiResponse:
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let authStatus = checkAuthorization(request, host)
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if authStatus.isErr():
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return authErrorResponse authStatus.error
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let
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pubkey = pubkey.valueOr:
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return keymanagerApiError(Http400, InvalidValidatorPublicKey)
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gasLimit = host.getSuggestedGasLimit(pubkey)
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if gasLimit.isOk:
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RestApiResponse.jsonResponse(GetValidatorGasLimitResponse(
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pubkey: pubkey,
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gas_limit: gasLimit.get))
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else:
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case gasLimit.error
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of noSuchValidator:
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keymanagerApiError(Http404, "No matching validator found")
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of malformedConfigFile:
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keymanagerApiError(Http500, "Error reading gas limit file")
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# https://ethereum.github.io/keymanager-APIs/#/Gas%20Limit/setGasLimit
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router.api2(MethodPost, "/eth/v1/validator/{pubkey}/gas_limit") do (
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pubkey: ValidatorPubKey,
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contentBody: Option[ContentBody]) -> RestApiResponse:
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let authStatus = checkAuthorization(request, host)
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if authStatus.isErr():
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return authErrorResponse authStatus.error
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let
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pubkey = pubkey.valueOr:
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return keymanagerApiError(Http400, InvalidValidatorPublicKey)
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gasLimitReq =
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block:
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if contentBody.isNone():
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return keymanagerApiError(Http400, InvalidGasLimitRequestError)
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let dres = decodeBody(SetGasLimitRequest, contentBody.get())
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if dres.isErr():
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return keymanagerApiError(Http400, InvalidGasLimitRequestError)
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dres.get()
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status = host.setGasLimit(pubkey, gasLimitReq.gas_limit)
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if status.isOk:
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RestApiResponse.response("", Http202, "text/plain")
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else:
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keymanagerApiError(
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Http500, "Failed to set gas limit: " & status.error)
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# https://ethereum.github.io/keymanager-APIs/#/Gas%20Limit/deleteGasLimit
|
|
router.api2(MethodDelete, "/eth/v1/validator/{pubkey}/gas_limit") do (
|
|
pubkey: ValidatorPubKey) -> RestApiResponse:
|
|
let authStatus = checkAuthorization(request, host)
|
|
if authStatus.isErr():
|
|
return authErrorResponse authStatus.error
|
|
let
|
|
pubkey = pubkey.valueOr:
|
|
return keymanagerApiError(Http400, InvalidValidatorPublicKey)
|
|
res = host.removeGasLimitFile(pubkey)
|
|
|
|
if res.isOk:
|
|
RestApiResponse.response("", Http204, "text/plain")
|
|
else:
|
|
keymanagerApiError(
|
|
Http500, "Failed to remove gas limit file: " & res.error)
|
|
|
|
# TODO: These URLs will be changed once we submit a proposal for
|
|
# /eth/v2/remotekeys that supports distributed keys.
|
|
router.api2(MethodGet, "/eth/v1/remotekeys/distributed") do (
|
|
) -> RestApiResponse:
|
|
let authStatus = checkAuthorization(request, host)
|
|
if authStatus.isErr():
|
|
return authErrorResponse authStatus.error
|
|
let response = GetDistributedKeystoresResponse(
|
|
data: listRemoteDistributedValidators(host.validatorPool[]))
|
|
RestApiResponse.jsonResponsePlain(response)
|
|
|
|
# TODO: These URLs will be changed once we submit a proposal for
|
|
# /eth/v2/remotekeys that supports distributed keys.
|
|
router.api2(MethodPost, "/eth/v1/remotekeys/distributed") do (
|
|
contentBody: Option[ContentBody]) -> RestApiResponse:
|
|
let authStatus = checkAuthorization(request, host)
|
|
if authStatus.isErr():
|
|
return authErrorResponse authStatus.error
|
|
let keys =
|
|
block:
|
|
if contentBody.isNone():
|
|
return keymanagerApiError(Http404, EmptyRequestBodyError)
|
|
let dres = decodeBody(ImportDistributedKeystoresBody, contentBody.get())
|
|
if dres.isErr():
|
|
return keymanagerApiError(Http400, InvalidKeystoreObjects)
|
|
dres.get.remote_keys
|
|
|
|
var response: PostKeystoresResponse
|
|
|
|
for index, key in keys:
|
|
let keystore = RemoteKeystore(
|
|
version: 2'u64,
|
|
remoteType: RemoteSignerType.Web3Signer,
|
|
pubkey: key.pubkey,
|
|
remotes: key.remotes,
|
|
threshold: uint32 key.threshold
|
|
)
|
|
response.data.add handleAddRemoteValidatorReq(host, keystore)
|
|
|
|
RestApiResponse.jsonResponsePlain(response)
|
|
|
|
router.api2(MethodDelete, "/eth/v1/remotekeys/distributed") do (
|
|
contentBody: Option[ContentBody]) -> RestApiResponse:
|
|
let authStatus = checkAuthorization(request, host)
|
|
if authStatus.isErr():
|
|
return authErrorResponse authStatus.error
|
|
let keys =
|
|
block:
|
|
if contentBody.isNone():
|
|
return keymanagerApiError(Http404, EmptyRequestBodyError)
|
|
let dres = decodeBody(DeleteKeystoresBody, contentBody.get())
|
|
if dres.isErr():
|
|
return keymanagerApiError(Http400, InvalidValidatorPublicKey)
|
|
dres.get.pubkeys
|
|
|
|
var response: DeleteRemoteKeystoresResponse
|
|
for index, key in keys:
|
|
response.data.add handleRemoveValidatorReq(host, key)
|
|
|
|
RestApiResponse.jsonResponsePlain(response)
|
|
|
|
# https://ethereum.github.io/keymanager-APIs/?urls.primaryName=dev#/Voluntary%20Exit/signVoluntaryExit
|
|
router.api2(MethodPost, "/eth/v1/validator/{pubkey}/voluntary_exit") do (
|
|
pubkey: ValidatorPubKey, epoch: Option[Epoch],
|
|
contentBody: Option[ContentBody]) -> RestApiResponse:
|
|
|
|
let authStatus = checkAuthorization(request, host)
|
|
if authStatus.isErr():
|
|
return authErrorResponse(authStatus.error)
|
|
|
|
let
|
|
qpubkey = pubkey.valueOr:
|
|
return keymanagerApiError(Http400, InvalidValidatorPublicKey)
|
|
currentEpoch = host.getBeaconTimeFn().slotOrZero().epoch()
|
|
qepoch =
|
|
if epoch.isSome():
|
|
let res = epoch.get()
|
|
if res.isErr():
|
|
return keymanagerApiError(Http400, InvalidEpochValueError)
|
|
res.get()
|
|
else:
|
|
currentEpoch
|
|
validator =
|
|
block:
|
|
let res = host.validatorPool[].getValidator(qpubkey).valueOr:
|
|
return keymanagerApiError(Http404, ValidatorNotFoundError)
|
|
if res.index.isNone():
|
|
return keymanagerApiError(Http404, ValidatorIndexMissingError)
|
|
res
|
|
voluntaryExit =
|
|
VoluntaryExit(epoch: qepoch,
|
|
validator_index: uint64(validator.index.get()))
|
|
fork = host.getForkFn(qepoch).valueOr:
|
|
return keymanagerApiError(Http500, FailedToObtainForkError)
|
|
capellaForkVersion = host.getCapellaForkVersionFn().valueOr:
|
|
return keymanagerApiError(Http500, FailedToObtainForkVersionError)
|
|
denebForkEpoch = host.getDenebForkEpochFn().valueOr:
|
|
return keymanagerApiError(Http500, FailedToObtainConsensusForkError)
|
|
signingFork = voluntary_exit_signature_fork(
|
|
fork, capellaForkVersion, currentEpoch, denebForkEpoch)
|
|
signature =
|
|
try:
|
|
let res = await validator.getValidatorExitSignature(
|
|
signingFork, host.getGenesisFn(), voluntaryExit)
|
|
if res.isErr():
|
|
return keymanagerApiError(Http500, res.error())
|
|
res.get()
|
|
except CancelledError as exc:
|
|
raise exc
|
|
except CatchableError as exc:
|
|
error "An unexpected error occurred while signing validator exit",
|
|
err_name = exc.name, err_msg = exc.msg
|
|
return keymanagerApiError(Http500, $exc.msg)
|
|
response = SignedVoluntaryExit(
|
|
message: voluntaryExit,
|
|
signature: signature
|
|
)
|
|
RestApiResponse.jsonResponse(response)
|