nimbus-eth2/beacon_chain/rpc/rest_key_management_api.nim

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# Copyright (c) 2021-2022 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.
import std/[tables, os, strutils, uri]
import chronos, chronicles, confutils,
2022-06-21 08:29:16 +00:00
stew/[base10, results, io2], blscurve
import ".."/validators/slashing_protection
import ".."/[conf, filepath, beacon_node]
import ".."/spec/[keystore, crypto]
import ".."/rpc/rest_utils
import ".."/validators/[keystore_management, validator_pool, validator_duties]
import ".."/spec/eth2_apis/rest_keymanager_types
export rest_utils, results
proc listLocalValidators*(node: BeaconNode): seq[KeystoreInfo]
{.raises: [Defect].} =
var validators: seq[KeystoreInfo]
for item in node.attachedValidators[].items():
if item.kind == ValidatorKind.Local:
validators.add KeystoreInfo(
validating_pubkey: item.pubkey,
derivation_path: string(item.data.path),
readonly: false
)
validators
proc listRemoteValidators*(node: BeaconNode): seq[RemoteKeystoreInfo]
{.raises: [Defect].} =
var validators: seq[RemoteKeystoreInfo]
for item in node.attachedValidators[].items():
if item.kind == ValidatorKind.Remote and item.data.remotes.len == 1:
validators.add RemoteKeystoreInfo(
pubkey: item.pubkey,
url: HttpHostUri(item.data.remotes[0].url)
)
validators
proc listRemoteDistributedValidators*(node: BeaconNode): seq[DistributedKeystoreInfo]
{.raises: [Defect].} =
var validators: seq[DistributedKeystoreInfo]
for item in node.attachedValidators[].items():
if item.kind == ValidatorKind.Remote and item.data.remotes.len > 1:
validators.add DistributedKeystoreInfo(
pubkey: item.pubkey,
remotes: item.data.remotes
)
validators
proc checkAuthorization*(request: HttpRequestRef,
node: BeaconNode): Result[void, AuthorizationError] =
let authorizations = request.headers.getList("authorization")
if authorizations.len > 0:
for authHeader in authorizations:
let parts = authHeader.split(' ', maxsplit = 1)
if parts.len == 2 and parts[0] == "Bearer":
if parts[1] == node.keymanagerToken.get:
return ok()
else:
return err incorrectToken
return err missingBearerScheme
else:
return err noAuthorizationHeader
proc validateUri*(url: string): Result[Uri, cstring] =
let surl = parseUri(url)
if surl.scheme notin ["http", "https"]:
return err("Incorrect URL scheme")
if len(surl.hostname) == 0:
return err("Empty URL hostname")
ok(surl)
proc removeValidator(node: BeaconNode,
key: ValidatorPubKey): RemoteKeystoreStatus =
let res = removeValidator(node.attachedValidators[], node.config,
key, KeystoreKind.Remote)
if res.isOk:
case res.value()
of RemoveValidatorStatus.deleted:
return RemoteKeystoreStatus(status: KeystoreStatus.deleted)
of RemoveValidatorStatus.notFound:
return RemoteKeystoreStatus(status: KeystoreStatus.notFound)
else:
return RemoteKeystoreStatus(status: KeystoreStatus.error,
message: some($res.error()))
proc addRemoteValidator(node: BeaconNode,
keystore: RemoteKeystore): RequestItemStatus =
let res = importKeystore(node.attachedValidators[], node.config, keystore)
if res.isErr():
case res.error().status
of AddValidatorStatus.failed:
return RequestItemStatus(status: $KeystoreStatus.error,
message: $res.error().message)
of AddValidatorStatus.existingArtifacts:
return RequestItemStatus(status: $KeystoreStatus.duplicate)
else:
node.addRemoteValidators([res.get()])
return RequestItemStatus(status: $KeystoreStatus.imported)
proc installKeymanagerHandlers*(router: var RestRouter, node: BeaconNode) =
# https://ethereum.github.io/keymanager-APIs/#/Keymanager/ListKeys
router.api(MethodGet, "/api/eth/v1/keystores") do () -> RestApiResponse:
let authStatus = checkAuthorization(request, node)
if authStatus.isErr():
return RestApiResponse.jsonError(Http401, InvalidAuthorization,
$authStatus.error())
let response = GetKeystoresResponse(data: listLocalValidators(node))
return RestApiResponse.jsonResponsePlain(response)
# https://ethereum.github.io/keymanager-APIs/#/Keymanager/ImportKeystores
router.api(MethodPost, "/api/eth/v1/keystores") do (
contentBody: Option[ContentBody]) -> RestApiResponse:
let authStatus = checkAuthorization(request, node)
if authStatus.isErr():
return RestApiResponse.jsonError(Http401, InvalidAuthorization,
$authStatus.error())
let request =
block:
if contentBody.isNone():
return RestApiResponse.jsonError(Http404, EmptyRequestBodyError)
let dres = decodeBody(KeystoresAndSlashingProtection, contentBody.get())
if dres.isErr():
return RestApiResponse.jsonError(Http400, InvalidKeystoreObjects,
$dres.error())
dres.get()
if request.slashing_protection.isSome():
let slashing_protection = request.slashing_protection.get()
let nodeSPDIR = toSPDIR(node.attachedValidators.slashingProtection)
if nodeSPDIR.metadata.genesis_validators_root.Eth2Digest !=
slashing_protection.metadata.genesis_validators_root.Eth2Digest:
return RestApiResponse.jsonError(Http400,
"The slashing protection database and imported file refer to " &
"different blockchains.")
let res = inclSPDIR(node.attachedValidators.slashingProtection,
slashing_protection)
if res == siFailure:
return RestApiResponse.jsonError(Http500,
"Internal server error; Failed to import slashing protection data")
var response: PostKeystoresResponse
for index, item in request.keystores:
let res = importKeystore(node.attachedValidators[], node.network.rng[],
node.config, item, request.passwords[index])
if res.isErr():
let failure = res.error()
case failure.status
of AddValidatorStatus.failed:
response.data.add(
RequestItemStatus(status: $KeystoreStatus.error,
message: failure.message))
of AddValidatorStatus.existingArtifacts:
response.data.add(
RequestItemStatus(status: $KeystoreStatus.duplicate))
else:
node.addLocalValidators([res.get()])
response.data.add(
RequestItemStatus(status: $KeystoreStatus.imported))
return RestApiResponse.jsonResponsePlain(response)
# https://ethereum.github.io/keymanager-APIs/#/Keymanager/DeleteKeys
router.api(MethodDelete, "/api/eth/v1/keystores") do (
contentBody: Option[ContentBody]) -> RestApiResponse:
let authStatus = checkAuthorization(request, node)
if authStatus.isErr():
return RestApiResponse.jsonError(Http401, InvalidAuthorization,
$authStatus.error())
let keys =
block:
if contentBody.isNone():
return RestApiResponse.jsonError(Http404, EmptyRequestBodyError)
let dres = decodeBody(DeleteKeystoresBody, contentBody.get())
if dres.isErr():
return RestApiResponse.jsonError(Http400, InvalidValidatorPublicKey,
$dres.error())
dres.get().pubkeys
var
response: DeleteKeystoresResponse
nodeSPDIR = toSPDIR(node.attachedValidators.slashingProtection)
# Hash table to keep the removal status of all keys form request
keysAndDeleteStatus = initTable[PubKeyBytes, RequestItemStatus]()
response.slashing_protection.metadata = nodeSPDIR.metadata
for index, key in keys:
let
res = removeValidator(node.attachedValidators[], node.config, key,
KeystoreKind.Local)
pubkey = key.blob.PubKey0x.PubKeyBytes
if res.isOk:
case res.value()
of RemoveValidatorStatus.deleted:
keysAndDeleteStatus[pubkey] =
RequestItemStatus(status: $KeystoreStatus.deleted)
# At first all keys with status missing directory after removal receive
# status 'not_found'
of RemoveValidatorStatus.notFound:
keysAndDeleteStatus[pubkey] =
RequestItemStatus(status: $KeystoreStatus.notFound)
else:
keysAndDeleteStatus[pubkey] =
RequestItemStatus(status: $KeystoreStatus.error,
message: $res.error())
# If we discover slashing protection data for a validator that was not
# found, this means the validator was active in the past, so we must
# respond with `not_active`:
for validator in nodeSPDIR.data:
keysAndDeleteStatus.withValue(validator.pubkey.PubKeyBytes, value) do:
response.slashing_protection.data.add(validator)
if value.status == $KeystoreStatus.notFound:
value.status = $KeystoreStatus.notActive
for index, key in keys:
response.data.add(keysAndDeleteStatus[key.blob.PubKey0x.PubKeyBytes])
return RestApiResponse.jsonResponsePlain(response)
# https://ethereum.github.io/keymanager-APIs/#/Remote%20Key%20Manager/ListRemoteKeys
router.api(MethodGet, "/api/eth/v1/remotekeys") do () -> RestApiResponse:
let authStatus = checkAuthorization(request, node)
if authStatus.isErr():
return RestApiResponse.jsonError(Http401, InvalidAuthorization,
$authStatus.error())
let response = GetRemoteKeystoresResponse(data: listRemoteValidators(node))
return RestApiResponse.jsonResponsePlain(response)
# https://ethereum.github.io/keymanager-APIs/#/Remote%20Key%20Manager/ImportRemoteKeys
router.api(MethodPost, "/api/eth/v1/remotekeys") do (
contentBody: Option[ContentBody]) -> RestApiResponse:
let authStatus = checkAuthorization(request, node)
if authStatus.isErr():
return RestApiResponse.jsonError(Http401, InvalidAuthorization,
$authStatus.error())
let keys =
block:
if contentBody.isNone():
return RestApiResponse.jsonError(Http404, EmptyRequestBodyError)
let dres = decodeBody(ImportRemoteKeystoresBody, contentBody.get())
if dres.isErr():
return RestApiResponse.jsonError(Http400, InvalidKeystoreObjects,
$dres.error())
dres.get().remote_keys
var response: PostKeystoresResponse
for index, key in keys:
let
remoteInfo = RemoteSignerInfo(
url: key.url,
pubkey: key.pubkey,
id: 0)
keystore = RemoteKeystore(
version: 1'u64, remoteType: RemoteSignerType.Web3Signer,
pubkey: key.pubkey, remotes: @[remoteInfo])
status = node.addRemoteValidator(keystore)
response.data.add(status)
return RestApiResponse.jsonResponsePlain(response)
# https://ethereum.github.io/keymanager-APIs/#/Remote%20Key%20Manager/DeleteRemoteKeys
router.api(MethodDelete, "/api/eth/v1/remotekeys") do (
contentBody: Option[ContentBody]) -> RestApiResponse:
let authStatus = checkAuthorization(request, node)
if authStatus.isErr():
return RestApiResponse.jsonError(Http401, InvalidAuthorization,
$authStatus.error())
let keys =
block:
if contentBody.isNone():
return RestApiResponse.jsonError(Http404, EmptyRequestBodyError)
let dres = decodeBody(DeleteKeystoresBody, contentBody.get())
if dres.isErr():
return RestApiResponse.jsonError(Http400, InvalidValidatorPublicKey,
$dres.error())
dres.get().pubkeys
var response: DeleteRemoteKeystoresResponse
for index, key in keys:
let status = node.removeValidator(key)
response.data.add(status)
return RestApiResponse.jsonResponsePlain(response)
# TODO: These URLs will be changed once we submit a proposal for
# /api/eth/v2/remotekeys that supports distributed keys.
router.api(MethodGet, "/api/eth/v1/remotekeys/distributed") do () -> RestApiResponse:
let authStatus = checkAuthorization(request, node)
if authStatus.isErr():
return RestApiResponse.jsonError(Http401, InvalidAuthorization,
$authStatus.error())
let response = GetDistributedKeystoresResponse(data: listRemoteDistributedValidators(node))
return RestApiResponse.jsonResponsePlain(response)
# TODO: These URLs will be changed once we submit a proposal for
# /api/eth/v2/remotekeys that supports distributed keys.
router.api(MethodPost, "/api/eth/v1/remotekeys/distributed") do (
contentBody: Option[ContentBody]) -> RestApiResponse:
let authStatus = checkAuthorization(request, node)
if authStatus.isErr():
return RestApiResponse.jsonError(Http401, InvalidAuthorization,
$authStatus.error())
let keys =
block:
if contentBody.isNone():
return RestApiResponse.jsonError(Http404, EmptyRequestBodyError)
let dres = decodeBody(ImportDistributedKeystoresBody, contentBody.get())
if dres.isErr():
return RestApiResponse.jsonError(Http400, InvalidKeystoreObjects,
$dres.error())
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
)
let status = node.addRemoteValidator(keystore)
response.data.add(status)
return RestApiResponse.jsonResponsePlain(response)
router.api(MethodDelete, "/api/eth/v1/remotekeys/distributed") do (
contentBody: Option[ContentBody]) -> RestApiResponse:
let authStatus = checkAuthorization(request, node)
if authStatus.isErr():
return RestApiResponse.jsonError(Http401, InvalidAuthorization,
$authStatus.error())
let keys =
block:
if contentBody.isNone():
return RestApiResponse.jsonError(Http404, EmptyRequestBodyError)
let dres = decodeBody(DeleteKeystoresBody, contentBody.get())
if dres.isErr():
return RestApiResponse.jsonError(Http400, InvalidValidatorPublicKey,
$dres.error())
dres.get.pubkeys
var response: DeleteRemoteKeystoresResponse
for index, key in keys:
let status = node.removeValidator(key)
response.data.add(status)
return RestApiResponse.jsonResponsePlain(response)
router.redirect(
MethodGet,
"/eth/v1/keystores",
"/api/eth/v1/keystores")
router.redirect(
MethodPost,
"/eth/v1/keystores",
"/api/eth/v1/keystores")
router.redirect(
MethodDelete,
"/eth/v1/keystores",
"/api/eth/v1/keystores")
router.redirect(
MethodGet,
"/eth/v1/remotekeys",
"/api/eth/v1/remotekeys")
router.redirect(
MethodPost,
"/eth/v1/remotekeys",
"/api/eth/v1/remotekeys")
router.redirect(
MethodDelete,
"/eth/v1/remotekeys",
"/api/eth/v1/remotekeys")
router.redirect(
MethodGet,
"/eth/v1/remotekeys/distributed",
"/api/eth/v1/remotekeys/distributed")
router.redirect(
MethodPost,
"/eth/v1/remotekeys/distributed",
"/api/eth/v1/remotekeys/distributed")
router.redirect(
MethodDelete,
"/eth/v1/remotekeys/distributed",
"/api/eth/v1/remotekeys/distributed")