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eth_sign (sans retrieval of account private key)

This commit is contained in:
coffeepots 2018-08-22 22:15:26 +01:00 committed by zah
parent f51fca2cae
commit dedb63a7f7
1 changed files with 23 additions and 8 deletions
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31
nimbus/rpc/p2p.nim
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@ -8,7 +8,7 @@
# those terms.
import
nimcrypto, json_rpc/rpcserver, eth_p2p, hexstrings, strutils, stint,
../config, ../vm_state, ../constants, eth_trie/[memdb, types],
../config, ../vm_state, ../constants, eth_trie/[memdb, types], eth_keys,
../db/[db_chain, state_db, storage_types], eth_common, rpc_types, byteutils,
ranges/typedranges, times, ../utils/header, rlp
@ -50,7 +50,14 @@ func headerFromTag(chain:BaseChainDB, blockTag: string): BlockHeader =
proc setupP2PRPC*(node: EthereumNode, rpcsrv: RpcServer) =
template chain: untyped = BaseChainDB(node.chain) # TODO: Sensible casting
proc accountDbFromTag(tag: string, readOnly = true): AccountStateDb =
proc getAccountDb(readOnly = true): AccountStateDb =
## Retrieves the account db from canonical head
let
header = chain.getCanonicalHead()
vmState = newBaseVMState(header, chain)
result = vmState.chaindb.getStateDb(vmState.blockHeader.hash, readOnly)
proc getAccountDbFromTag(tag: string, readOnly = true): AccountStateDb =
let
header = chain.headerFromTag(tag)
vmState = newBaseVMState(header, chain)
@ -107,7 +114,7 @@ proc setupP2PRPC*(node: EthereumNode, rpcsrv: RpcServer) =
## quantityTag: integer block number, or the string "latest", "earliest" or "pending", see the default block parameter.
## Returns integer of the current balance in wei.
let
accountDb = accountDbFromTag(quantityTag)
accountDb = getAccountDbFromTag(quantityTag)
addrBytes = strToAddress(data.string)
balance = accountDb.get_balance(addrBytes)
@ -121,7 +128,7 @@ proc setupP2PRPC*(node: EthereumNode, rpcsrv: RpcServer) =
## quantityTag: integer block number, or the string "latest", "earliest" or "pending", see the default block parameter.
## Returns: the value at this storage position.
let
accountDb = accountDbFromTag(quantityTag)
accountDb = getAccountDbFromTag(quantityTag)
addrBytes = strToAddress(data.string)
storage = accountDb.getStorage(addrBytes, quantity.u256)
if storage[1]:
@ -135,7 +142,7 @@ proc setupP2PRPC*(node: EthereumNode, rpcsrv: RpcServer) =
## Returns integer of the number of transactions send from this address.
let
addrBytes = data.string.strToAddress()
accountDb = accountDbFromTag(quantityTag)
accountDb = getAccountDbFromTag(quantityTag)
result = accountDb.getNonce(addrBytes)
rpcsrv.rpc("eth_getBlockTransactionCountByHash") do(data: HexDataStr) -> int:
@ -156,7 +163,7 @@ proc setupP2PRPC*(node: EthereumNode, rpcsrv: RpcServer) =
## Returns integer of the number of transactions in this block.
let
header = chain.headerFromTag(quantityTag)
accountDb = accountDbFromTag(quantityTag)
accountDb = getAccountDbFromTag(quantityTag)
body = chain.getBlockBody(header.hash)
if body == nil:
raise newException(ValueError, "Cannot find hash")
@ -192,12 +199,17 @@ proc setupP2PRPC*(node: EthereumNode, rpcsrv: RpcServer) =
## quantityTag: integer block number, or the string "latest", "earliest" or "pending", see the default block parameter.
## Returns the code from the given address.
let
accountDb = accountDbFromTag(quantityTag)
accountDb = getAccountDbFromTag(quantityTag)
addrBytes = strToAddress(data.string)
storage = accountDb.getCode(addrBytes)
# Easier to return the string manually here rather than expect ByteRange to be marshalled
result = byteutils.toHex(storage.toOpenArray).HexDataStr
template sign(privateKey: PrivateKey, message: string): string =
# TODO: Is message length encoded as bytes or characters?
let msgData = "\x19Ethereum Signed Message:\n" & $message.len & message
$signMessage(privateKey, msgData)
rpcsrv.rpc("eth_sign") do(data: EthAddressStr, message: HexDataStr) -> HexDataStr:
## The sign method calculates an Ethereum specific signature with: sign(keccak256("\x19Ethereum Signed Message:\n" + len(message) + message))).
## By adding a prefix to the message makes the calculated signature recognisable as an Ethereum specific signature.
@ -207,7 +219,9 @@ proc setupP2PRPC*(node: EthereumNode, rpcsrv: RpcServer) =
## data: address.
## message: message to sign.
## Returns signature.
discard
let accountDb = getAccountDb(true)
var privateKey: PrivateKey # TODO: Get from key store
result = ("0x" & sign(privateKey, message.string)).HexDataStr
rpcsrv.rpc("eth_sendTransaction") do(obj: EthSend) -> HexDataStr:
## Creates new message call transaction or a contract creation, if the data field contains code.
@ -412,6 +426,7 @@ proc setupP2PRPC*(node: EthereumNode, rpcsrv: RpcServer) =
result.logsBloom = blockHeader.bloom
# post-transaction stateroot (pre Byzantium).
result.root = blockHeader.stateRoot
# TODO: Respond to success/failure
# 1 = success, 0 = failure.
result.status = 1