48 lines
1.9 KiB
Nim
48 lines
1.9 KiB
Nim
# Nimbus
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# Copyright (c) 2018 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
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# * MIT license ([LICENSE-MIT](LICENSE-MIT))
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# at your option.
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# This file may not be copied, modified, or distributed except according to
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# those terms.
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import
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nimcrypto, json_rpc/server, eth_p2p, hexstrings, strutils, stint,
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../config, ../vm_state, ../constants, eth_trie/[memdb, types],
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../db/[db_chain, state_db], eth_common
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func headerFromTag(chain:BaseChainDB, blockTag: string): BlockHeader =
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let tag = blockTag.toLowerAscii
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case tag
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of "latest": result = chain.getCanonicalHead()
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of "earliest": result = chain.getCanonicalBlockHeaderByNumber(GENESIS_BLOCK_NUMBER)
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of "pending":
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#TODO: Implement get pending block
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raise newException(ValueError, "Pending tag not yet implemented")
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else:
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# Raises are trapped and wrapped in JSON when returned to the user.
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tag.validateHexQuantity
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let blockNum = stint.fromHex(UInt256, tag)
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result = chain.getCanonicalBlockHeaderByNumber(blockNum)
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proc setupP2PRPC*(server: EthereumNode, rpcsrv: RpcServer) =
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rpcsrv.rpc("net_version") do() -> uint:
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let conf = getConfiguration()
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result = conf.net.networkId
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rpcsrv.rpc("eth_getBalance") do(address: array[20, byte], quantityTag: string) -> int:
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## Returns the balance of the account of given address.
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##
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## data: address to check for balance.
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## quantityTag: integer block number, or the string "latest", "earliest" or "pending", see the default block parameter.
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## Returns integer of the current balance in wei.
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template chain: untyped = BaseChainDB(server.chain) # TODO: Sensible casting
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let
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header = chain.headerFromTag(quantityTag)
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vmState = newBaseVMState(header, chain)
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account_db = vmState.readOnlyStateDb
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balance = account_db.get_balance(address)
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return balance.toInt
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