264 lines
11 KiB
Rust
264 lines
11 KiB
Rust
// Copyright 2015-2019 Parity Technologies (UK) Ltd.
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// This file is part of Parity Ethereum.
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// Parity Ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity Ethereum is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity Ethereum. If not, see <http://www.gnu.org/licenses/>.
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//! Ethash params deserialization.
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use bytes::Bytes;
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use hash::Address;
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use std::collections::BTreeMap;
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use uint::{self, Uint};
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/// Deserializable doppelganger of block rewards for EthashParams
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#[derive(Clone, Debug, PartialEq, Deserialize)]
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#[serde(deny_unknown_fields)]
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#[serde(untagged)]
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pub enum BlockReward {
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Single(Uint),
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Multi(BTreeMap<Uint, Uint>),
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}
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/// Deserializable doppelganger of EthashParams.
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#[derive(Clone, Debug, PartialEq, Deserialize)]
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#[serde(deny_unknown_fields)]
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#[serde(rename_all = "camelCase")]
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pub struct EthashParams {
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/// See main EthashParams docs.
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#[serde(deserialize_with = "uint::validate_non_zero")]
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pub minimum_difficulty: Uint,
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/// See main EthashParams docs.
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#[serde(deserialize_with = "uint::validate_non_zero")]
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pub difficulty_bound_divisor: Uint,
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/// See main EthashParams docs.
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#[serde(default, deserialize_with = "uint::validate_optional_non_zero")]
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pub difficulty_increment_divisor: Option<Uint>,
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/// See main EthashParams docs.
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#[serde(default, deserialize_with = "uint::validate_optional_non_zero")]
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pub metropolis_difficulty_increment_divisor: Option<Uint>,
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/// See main EthashParams docs.
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pub duration_limit: Option<Uint>,
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/// See main EthashParams docs.
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pub homestead_transition: Option<Uint>,
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/// Reward per block in wei.
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pub block_reward: Option<BlockReward>,
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/// Block at which the block reward contract should start being used.
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pub block_reward_contract_transition: Option<Uint>,
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/// Block reward contract address (setting the block reward contract
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/// overrides all other block reward parameters).
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pub block_reward_contract_address: Option<Address>,
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/// Block reward code. This overrides the block reward contract address.
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pub block_reward_contract_code: Option<Bytes>,
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/// See main EthashParams docs.
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pub dao_hardfork_transition: Option<Uint>,
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/// See main EthashParams docs.
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pub dao_hardfork_beneficiary: Option<Address>,
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/// See main EthashParams docs.
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pub dao_hardfork_accounts: Option<Vec<Address>>,
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/// See main EthashParams docs.
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pub difficulty_hardfork_transition: Option<Uint>,
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/// See main EthashParams docs.
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#[serde(default, deserialize_with = "uint::validate_optional_non_zero")]
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pub difficulty_hardfork_bound_divisor: Option<Uint>,
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/// See main EthashParams docs.
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pub bomb_defuse_transition: Option<Uint>,
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/// See main EthashParams docs.
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pub eip100b_transition: Option<Uint>,
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/// See main EthashParams docs.
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pub ecip1017_era_rounds: Option<Uint>,
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/// Delays of difficulty bombs.
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pub difficulty_bomb_delays: Option<BTreeMap<Uint, Uint>>,
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/// EXPIP-2 block height
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pub expip2_transition: Option<Uint>,
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/// EXPIP-2 duration limit
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pub expip2_duration_limit: Option<Uint>,
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/// Block to transition to progpow
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#[serde(rename = "progpowTransition")]
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pub progpow_transition: Option<Uint>,
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}
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/// Ethash engine deserialization.
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#[derive(Debug, PartialEq, Deserialize)]
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#[serde(deny_unknown_fields)]
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pub struct Ethash {
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/// Ethash params.
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pub params: EthashParams,
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}
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#[cfg(test)]
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mod tests {
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use ethereum_types::{H160, U256};
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use hash::Address;
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use serde_json;
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use spec::ethash::{BlockReward, Ethash, EthashParams};
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use uint::Uint;
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#[test]
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fn ethash_deserialization() {
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let s = r#"{
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"params": {
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"minimumDifficulty": "0x020000",
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"difficultyBoundDivisor": "0x0800",
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"durationLimit": "0x0d",
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"homesteadTransition": "0x42",
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"blockReward": "0x100",
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"daoHardforkTransition": "0x08",
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"daoHardforkBeneficiary": "0xabcabcabcabcabcabcabcabcabcabcabcabcabca",
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"daoHardforkAccounts": [
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"0x304a554a310c7e546dfe434669c62820b7d83490",
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"0x914d1b8b43e92723e64fd0a06f5bdb8dd9b10c79",
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"0xfe24cdd8648121a43a7c86d289be4dd2951ed49f",
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"0x17802f43a0137c506ba92291391a8a8f207f487d",
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"0xb136707642a4ea12fb4bae820f03d2562ebff487",
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"0xdbe9b615a3ae8709af8b93336ce9b477e4ac0940",
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"0xf14c14075d6c4ed84b86798af0956deef67365b5",
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"0xca544e5c4687d109611d0f8f928b53a25af72448",
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"0xaeeb8ff27288bdabc0fa5ebb731b6f409507516c",
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"0xcbb9d3703e651b0d496cdefb8b92c25aeb2171f7",
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"0xaccc230e8a6e5be9160b8cdf2864dd2a001c28b6",
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"0x2b3455ec7fedf16e646268bf88846bd7a2319bb2",
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"0x4613f3bca5c44ea06337a9e439fbc6d42e501d0a",
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"0xd343b217de44030afaa275f54d31a9317c7f441e",
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"0x84ef4b2357079cd7a7c69fd7a37cd0609a679106",
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"0xda2fef9e4a3230988ff17df2165440f37e8b1708",
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"0xf4c64518ea10f995918a454158c6b61407ea345c",
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"0x7602b46df5390e432ef1c307d4f2c9ff6d65cc97",
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"0xbb9bc244d798123fde783fcc1c72d3bb8c189413",
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"0x807640a13483f8ac783c557fcdf27be11ea4ac7a"
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],
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"difficultyHardforkTransition": "0x59d9",
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"difficultyHardforkBoundDivisor": "0x0200",
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"bombDefuseTransition": "0x41",
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"eip100bTransition": "0x42"
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}
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}"#;
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let deserialized: Ethash = serde_json::from_str(s).unwrap();
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assert_eq!(
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deserialized,
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Ethash {
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params: EthashParams {
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minimum_difficulty: Uint(U256::from(0x020000)),
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difficulty_bound_divisor: Uint(U256::from(0x0800)),
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difficulty_increment_divisor: None,
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metropolis_difficulty_increment_divisor: None,
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duration_limit: Some(Uint(U256::from(0x0d))),
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homestead_transition: Some(Uint(U256::from(0x42))),
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block_reward: Some(BlockReward::Single(Uint(U256::from(0x100)))),
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block_reward_contract_address: None,
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block_reward_contract_code: None,
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block_reward_contract_transition: None,
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dao_hardfork_transition: Some(Uint(U256::from(0x08))),
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dao_hardfork_beneficiary: Some(Address(H160::from(
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"0xabcabcabcabcabcabcabcabcabcabcabcabcabca"
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))),
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dao_hardfork_accounts: Some(vec![
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Address(H160::from("0x304a554a310c7e546dfe434669c62820b7d83490")),
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Address(H160::from("0x914d1b8b43e92723e64fd0a06f5bdb8dd9b10c79")),
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Address(H160::from("0xfe24cdd8648121a43a7c86d289be4dd2951ed49f")),
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Address(H160::from("0x17802f43a0137c506ba92291391a8a8f207f487d")),
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Address(H160::from("0xb136707642a4ea12fb4bae820f03d2562ebff487")),
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Address(H160::from("0xdbe9b615a3ae8709af8b93336ce9b477e4ac0940")),
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Address(H160::from("0xf14c14075d6c4ed84b86798af0956deef67365b5")),
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Address(H160::from("0xca544e5c4687d109611d0f8f928b53a25af72448")),
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Address(H160::from("0xaeeb8ff27288bdabc0fa5ebb731b6f409507516c")),
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Address(H160::from("0xcbb9d3703e651b0d496cdefb8b92c25aeb2171f7")),
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Address(H160::from("0xaccc230e8a6e5be9160b8cdf2864dd2a001c28b6")),
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Address(H160::from("0x2b3455ec7fedf16e646268bf88846bd7a2319bb2")),
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Address(H160::from("0x4613f3bca5c44ea06337a9e439fbc6d42e501d0a")),
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Address(H160::from("0xd343b217de44030afaa275f54d31a9317c7f441e")),
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Address(H160::from("0x84ef4b2357079cd7a7c69fd7a37cd0609a679106")),
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Address(H160::from("0xda2fef9e4a3230988ff17df2165440f37e8b1708")),
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Address(H160::from("0xf4c64518ea10f995918a454158c6b61407ea345c")),
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Address(H160::from("0x7602b46df5390e432ef1c307d4f2c9ff6d65cc97")),
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Address(H160::from("0xbb9bc244d798123fde783fcc1c72d3bb8c189413")),
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Address(H160::from("0x807640a13483f8ac783c557fcdf27be11ea4ac7a")),
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]),
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difficulty_hardfork_transition: Some(Uint(U256::from(0x59d9))),
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difficulty_hardfork_bound_divisor: Some(Uint(U256::from(0x0200))),
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bomb_defuse_transition: Some(Uint(U256::from(0x41))),
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eip100b_transition: Some(Uint(U256::from(0x42))),
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ecip1017_era_rounds: None,
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expip2_transition: None,
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expip2_duration_limit: None,
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progpow_transition: None,
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difficulty_bomb_delays: None,
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}
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}
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);
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}
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#[test]
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fn ethash_deserialization_missing_optionals() {
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let s = r#"{
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"params": {
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"difficultyBoundDivisor": "0x0800",
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"minimumDifficulty": "0x020000"
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}
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}"#;
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let deserialized: Ethash = serde_json::from_str(s).unwrap();
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assert_eq!(
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deserialized,
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Ethash {
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params: EthashParams {
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minimum_difficulty: Uint(U256::from(0x020000)),
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difficulty_bound_divisor: Uint(U256::from(0x0800)),
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difficulty_increment_divisor: None,
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metropolis_difficulty_increment_divisor: None,
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duration_limit: None,
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homestead_transition: None,
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block_reward: None,
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block_reward_contract_address: None,
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block_reward_contract_code: None,
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block_reward_contract_transition: None,
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dao_hardfork_transition: None,
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dao_hardfork_beneficiary: None,
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dao_hardfork_accounts: None,
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difficulty_hardfork_transition: None,
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difficulty_hardfork_bound_divisor: None,
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bomb_defuse_transition: None,
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eip100b_transition: None,
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ecip1017_era_rounds: None,
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expip2_transition: None,
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expip2_duration_limit: None,
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progpow_transition: None,
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difficulty_bomb_delays: None,
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}
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}
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);
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}
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#[test]
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#[should_panic(expected = "a non-zero value")]
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fn test_zero_value_divisor() {
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let s = r#"{
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"params": {
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"difficultyBoundDivisor": "0x0",
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"minimumDifficulty": "0x020000"
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}
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}"#;
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let _deserialized: Ethash = serde_json::from_str(s).unwrap();
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}
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}
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