Engine backports (#4718) (#4781)

* custom dev presets

* add registrar field

* use constructor for dev registrar

* fix test

ethcore/src/engines/authority_round.rs

@@ -49,6 +49,8 @@ pub struct AuthorityRoundParams {
 	pub step_duration: Duration,
 	/// Block reward.
 	pub block_reward: U256,
+	/// Namereg contract address.
+	pub registrar: Address,
 	/// Starting step,
 	pub start_step: Option<u64>,
 	/// Valid validators.
@@ -62,6 +64,7 @@ impl From<ethjson::spec::AuthorityRoundParams> for AuthorityRoundParams {
 			step_duration: Duration::from_secs(p.step_duration.into()),
 			validators: p.validators,
 			block_reward: p.block_reward.map_or_else(U256::zero, Into::into),
+			registrar: p.registrar.map_or_else(Address::new, Into::into),
 			start_step: p.start_step.map(Into::into),
 		}
 	}
@@ -73,6 +76,7 @@ pub struct AuthorityRound {
 	params: CommonParams,
 	gas_limit_bound_divisor: U256,
 	block_reward: U256,
+	registrar: Address,
 	step_duration: Duration,
 	builtins: BTreeMap<Address, Builtin>,
 	transition_service: IoService<()>,
@@ -112,6 +116,7 @@ impl AuthorityRound {
 				params: params,
 				gas_limit_bound_divisor: our_params.gas_limit_bound_divisor,
 				block_reward: our_params.block_reward,
+				registrar: our_params.registrar,
 				step_duration: our_params.step_duration,
 				builtins: builtins,
 				transition_service: IoService::<()>::start()?,
@@ -180,11 +185,16 @@ impl IoHandler<()> for TransitionHandler {
 
 impl Engine for AuthorityRound {
 	fn name(&self) -> &str { "AuthorityRound" }
+
 	fn version(&self) -> SemanticVersion { SemanticVersion::new(1, 0, 0) }
+
 	/// Two fields - consensus step and the corresponding proposer signature.
 	fn seal_fields(&self) -> usize { 2 }
 
 	fn params(&self) -> &CommonParams { &self.params }
+
+	fn additional_params(&self) -> HashMap<String, String> { hash_map!["registrar".to_owned() => self.registrar.hex()] }
+
 	fn builtins(&self) -> &BTreeMap<Address, Builtin> { &self.builtins }
 
 	fn step(&self) {

ethcore/src/engines/instant_seal.rs

@@ -15,7 +15,7 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 use std::collections::BTreeMap;
-use util::Address;
+use util::{Address, HashMap};
 use builtin::Builtin;
 use engines::{Engine, Seal};
 use env_info::EnvInfo;
@@ -26,14 +26,16 @@ use block::ExecutedBlock;
 /// An engine which does not provide any consensus mechanism, just seals blocks internally.
 pub struct InstantSeal {
 	params: CommonParams,
+	registrar: Address,
 	builtins: BTreeMap<Address, Builtin>,
 }
 
 impl InstantSeal {
 	/// Returns new instance of InstantSeal with default VM Factory
-	pub fn new(params: CommonParams, builtins: BTreeMap<Address, Builtin>) -> Self {
+	pub fn new(params: CommonParams, registrar: Address, builtins: BTreeMap<Address, Builtin>) -> Self {
 		InstantSeal {
 			params: params,
+			registrar: registrar,
 			builtins: builtins,
 		}
 	}
@@ -48,6 +50,10 @@ impl Engine for InstantSeal {
 		&self.params
 	}
 
+	fn additional_params(&self) -> HashMap<String, String> {
+		hash_map!["registrar".to_owned() => self.registrar.hex()]
+	}
+
 	fn builtins(&self) -> &BTreeMap<Address, Builtin> {
 		&self.builtins
 	}
@@ -76,9 +82,9 @@ mod tests {
 	fn instant_can_seal() {
 		let spec = Spec::new_instant();
 		let engine = &*spec.engine;
-		let genesis_header = spec.genesis_header();
 		let mut db_result = get_temp_state_db();
 		let db = spec.ensure_db_good(db_result.take(), &Default::default()).unwrap();
+		let genesis_header = spec.genesis_header();
 		let last_hashes = Arc::new(vec![genesis_header.hash()]);
 		let b = OpenBlock::new(engine, Default::default(), false, db, &genesis_header, last_hashes, Address::default(), (3141562.into(), 31415620.into()), vec![]).unwrap();
 		let b = b.close_and_lock();

ethcore/src/engines/tendermint/mod.rs

@@ -86,6 +86,7 @@ pub struct Tendermint {
 	authority: RwLock<Address>,
 	/// Password used for signing messages.
 	password: RwLock<Option<String>>,
+	registrar: Address,
 	/// Blockchain height.
 	height: AtomicUsize,
 	/// Consensus round.
@@ -119,6 +120,7 @@ impl Tendermint {
 				block_reward: our_params.block_reward,
 				authority: RwLock::new(Address::default()),
 				password: RwLock::new(None),
+				registrar: our_params.registrar,
 				height: AtomicUsize::new(1),
 				round: AtomicUsize::new(0),
 				step: RwLock::new(Step::Propose),
@@ -376,14 +378,20 @@ impl Tendermint {
 
 impl Engine for Tendermint {
 	fn name(&self) -> &str { "Tendermint" }
+
 	fn version(&self) -> SemanticVersion { SemanticVersion::new(1, 0, 0) }
+
 	/// (consensus round, proposal signature, authority signatures)
 	fn seal_fields(&self) -> usize { 3 }
 
 	fn params(&self) -> &CommonParams { &self.params }
+
+	fn additional_params(&self) -> HashMap<String, String> { hash_map!["registrar".to_owned() => self.registrar.hex()] }
+
 	fn builtins(&self) -> &BTreeMap<Address, Builtin> { &self.builtins }
 
 	fn maximum_uncle_count(&self) -> usize { 0 }
+
 	fn maximum_uncle_age(&self) -> usize { 0 }
 
 	/// Additional engine-specific information for the user/developer concerning `header`.

ethcore/src/engines/tendermint/params.rs

@@ -18,7 +18,7 @@
 
 use ethjson;
 use super::transition::TendermintTimeouts;
-use util::{U256, Uint};
+use util::{U256, Uint, Address, FixedHash};
 use time::Duration;
 
 /// `Tendermint` params.
@@ -32,6 +32,8 @@ pub struct TendermintParams {
 	pub timeouts: TendermintTimeouts,
 	/// Block reward.
 	pub block_reward: U256,
+	/// Namereg contract address.
+	pub registrar: Address,
 }
 
 fn to_duration(ms: ethjson::uint::Uint) -> Duration {
@@ -52,6 +54,7 @@ impl From<ethjson::spec::TendermintParams> for TendermintParams {
 				commit: p.timeout_commit.map_or(dt.commit, to_duration),
 			},
 			block_reward: p.block_reward.map_or_else(U256::zero, Into::into),
+			registrar: p.registrar.map_or_else(Address::new, Into::into),
 		}
 	}
 }

ethcore/src/spec/spec.rs

@@ -157,7 +157,7 @@ impl Spec {
 	fn engine(engine_spec: ethjson::spec::Engine, params: CommonParams, builtins: BTreeMap<Address, Builtin>) -> Arc<Engine> {
 		match engine_spec {
 			ethjson::spec::Engine::Null => Arc::new(NullEngine::new(params, builtins)),
-			ethjson::spec::Engine::InstantSeal => Arc::new(InstantSeal::new(params, builtins)),
+			ethjson::spec::Engine::InstantSeal(instant) => Arc::new(InstantSeal::new(params, instant.params.registrar.map_or_else(Address::new, Into::into), builtins)),
 			ethjson::spec::Engine::Ethash(ethash) => Arc::new(ethereum::Ethash::new(params, From::from(ethash.params), builtins)),
 			ethjson::spec::Engine::BasicAuthority(basic_authority) => Arc::new(BasicAuthority::new(params, From::from(basic_authority.params), builtins)),
 			ethjson::spec::Engine::AuthorityRound(authority_round) => AuthorityRound::new(params, From::from(authority_round.params), builtins).expect("Failed to start AuthorityRound consensus engine."),