Deny unknown fields for chainspec (#9972)

* Add deny_unknown_fields to chainspec

* Add tests and fix existing one

* Remove serde_ignored dependency for chainspec

* Fix rpc test eth chain spec

* Fix starting_nonce_test spec

Cargo.lock

@@ -210,7 +210,6 @@ name = "chainspec"
 version = "0.1.0"
 dependencies = [
  "ethjson 0.1.0",
- "serde_ignored 0.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.32 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -685,8 +684,8 @@ dependencies = [
  "rlp_compress 0.1.0",
  "rlp_derive 0.1.0",
  "rustc-hex 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.78 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.78 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)",
  "stats 0.1.0",
  "stop-guard 0.1.0",
  "tempdir 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3233,14 +3232,6 @@ dependencies = [
  "syn 0.15.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "serde_ignored"
-version = "0.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "serde 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "serde_json"
 version = "1.0.32"
@@ -4444,7 +4435,6 @@ dependencies = [
 "checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 "checksum serde 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)" = "15c141fc7027dd265a47c090bf864cf62b42c4d228bbcf4e51a0c9e2b0d3f7ef"
 "checksum serde_derive 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)" = "225de307c6302bec3898c51ca302fc94a7a1697ef0845fcee6448f33c032249c"
-"checksum serde_ignored 0.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "190e9765dcedb56be63b6e0993a006c7e3b071a016a304736e4a315dc01fb142"
 "checksum serde_json 1.0.32 (registry+https://github.com/rust-lang/crates.io-index)" = "43344e7ce05d0d8280c5940cabb4964bea626aa58b1ec0e8c73fa2a8512a38ce"
 "checksum sha1 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "cc30b1e1e8c40c121ca33b86c23308a090d19974ef001b4bf6e61fd1a0fb095c"
 "checksum sha1 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "171698ce4ec7cbb93babeb3190021b4d72e96ccb98e33d277ae4ea959d6f2d9e"

chainspec/Cargo.toml

@@ -6,4 +6,3 @@ authors = ["Marek Kotewicz <marek@parity.io>"]
 [dependencies]
 ethjson = { path = "../json" }
 serde_json = "1.0"
-serde_ignored = "0.0.4"

chainspec/src/main.rs

@@ -15,10 +15,8 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 extern crate serde_json;
-extern crate serde_ignored;
 extern crate ethjson;
 
-use std::collections::BTreeSet;
 use std::{fs, env, process};
 use ethjson::spec::Spec;
 
@@ -41,24 +39,11 @@ fn main() {
 		Err(_) => quit(&format!("{} could not be opened", path)),
 	};
 
-	let mut unused = BTreeSet::new();
+	let spec: Result<Spec, _> = serde_json::from_reader(file);
-	let mut deserializer = serde_json::Deserializer::from_reader(file);
-
-	let spec: Result<Spec, _> = serde_ignored::deserialize(&mut deserializer, |field| {
-		unused.insert(field.to_string());
-	});
 
 	if let Err(err) = spec {
 		quit(&format!("{} {}", path, err.to_string()));
 	}
 
-	if !unused.is_empty() {
-		let err = unused.into_iter()
-			.map(|field| format!("{} unexpected field `{}`", path, field))
-			.collect::<Vec<_>>()
-			.join("\n");
-		quit(&err);
-	}
-
 	println!("{} is valid", path);
 }

json/src/spec/account.rs

@@ -23,6 +23,7 @@ use spec::builtin::Builtin;
 
 /// Spec account.
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 pub struct Account {
 	/// Builtin contract.
 	pub builtin: Option<Builtin>,

json/src/spec/authority_round.rs

@@ -23,6 +23,7 @@ use super::ValidatorSet;
 
 /// Authority params deserialization.
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 #[serde(rename_all = "camelCase")]
 pub struct AuthorityRoundParams {
 	/// Block duration, in seconds.
@@ -59,6 +60,7 @@ pub struct AuthorityRoundParams {
 
 /// Authority engine deserialization.
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 pub struct AuthorityRound {
 	/// Ethash params.
 	pub params: AuthorityRoundParams,

json/src/spec/basic_authority.rs

@@ -21,6 +21,7 @@ use super::ValidatorSet;
 
 /// Authority params deserialization.
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 #[serde(rename_all = "camelCase")]
 pub struct BasicAuthorityParams {
 	/// Block duration.
@@ -31,6 +32,7 @@ pub struct BasicAuthorityParams {
 
 /// Authority engine deserialization.
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 pub struct BasicAuthority {
 	/// Ethash params.
 	pub params: BasicAuthorityParams,

json/src/spec/builtin.rs

@@ -20,6 +20,7 @@ use uint::Uint;
 
 /// Linear pricing.
 #[derive(Debug, PartialEq, Deserialize, Clone)]
+#[serde(deny_unknown_fields)]
 pub struct Linear {
 	/// Base price.
 	pub base: usize,
@@ -29,6 +30,7 @@ pub struct Linear {
 
 /// Pricing for modular exponentiation.
 #[derive(Debug, PartialEq, Deserialize, Clone)]
+#[serde(deny_unknown_fields)]
 pub struct Modexp {
 	/// Price divisor.
 	pub divisor: usize,
@@ -36,6 +38,7 @@ pub struct Modexp {
 
 /// Pricing for alt_bn128_pairing.
 #[derive(Debug, PartialEq, Deserialize, Clone)]
+#[serde(deny_unknown_fields)]
 pub struct AltBn128Pairing {
 	/// Base price.
 	pub base: usize,
@@ -45,6 +48,7 @@ pub struct AltBn128Pairing {
 
 /// Pricing variants.
 #[derive(Debug, PartialEq, Deserialize, Clone)]
+#[serde(deny_unknown_fields)]
 #[serde(rename_all = "snake_case")]
 pub enum Pricing {
 	/// Linear pricing.
@@ -57,6 +61,7 @@ pub enum Pricing {
 
 /// Spec builtin.
 #[derive(Debug, PartialEq, Deserialize, Clone)]
+#[serde(deny_unknown_fields)]
 pub struct Builtin {
 	/// Builtin name.
 	pub name: String,

json/src/spec/engine.rs

@@ -20,6 +20,7 @@ use super::{Ethash, BasicAuthority, AuthorityRound, Tendermint, NullEngine, Inst
 
 /// Engine deserialization.
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 #[serde(rename_all = "camelCase")]
 pub enum Engine {
 	/// Null engine.
@@ -85,7 +86,6 @@ mod tests {
 					"minimumDifficulty": "0x020000",
 					"difficultyBoundDivisor": "0x0800",
 					"durationLimit": "0x0d",
-					"registrar" : "0xc6d9d2cd449a754c494264e1809c50e34d64562b",
 					"homesteadTransition" : "0x",
 					"daoHardforkTransition": "0xffffffffffffffff",
 					"daoHardforkBeneficiary": "0x0000000000000000000000000000000000000000",

json/src/spec/ethash.rs

@@ -23,6 +23,7 @@ use hash::Address;
 
 /// Deserializable doppelganger of block rewards for EthashParams
 #[derive(Clone, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 #[serde(untagged)]
 pub enum BlockReward {
 	Single(Uint),
@@ -31,6 +32,7 @@ pub enum BlockReward {
 
 /// Deserializable doppelganger of EthashParams.
 #[derive(Clone, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 #[serde(rename_all = "camelCase")]
 pub struct EthashParams {
 	/// See main EthashParams docs.
@@ -97,6 +99,7 @@ pub struct EthashParams {
 
 /// Ethash engine deserialization.
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 pub struct Ethash {
 	/// Ethash params.
 	pub params: EthashParams,

json/src/spec/genesis.rs

@@ -23,6 +23,7 @@ use spec::Seal;
 
 /// Spec genesis.
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 #[serde(rename_all = "camelCase")]
 pub struct Genesis {
 	/// Seal.
@@ -64,7 +65,6 @@ mod tests {
 	#[test]
 	fn genesis_deserialization() {
 		let s = r#"{
-			"nonce": "0x0000000000000042",
 			"difficulty": "0x400000000",
 			"seal": {
 				"ethereum": {

json/src/spec/hardcoded_sync.rs

@@ -21,6 +21,7 @@ use uint::Uint;
 
 /// Spec hardcoded sync.
 #[derive(Debug, PartialEq, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
 #[serde(rename_all = "camelCase")]
 pub struct HardcodedSync {
 	/// Hexadecimal of the RLP encoding of the header of the block to start synchronization from.

json/src/spec/instant_seal.rs

@@ -18,6 +18,7 @@
 
 /// Instant seal engine params deserialization.
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 #[serde(rename_all = "camelCase")]
 pub struct InstantSealParams {
 	/// Whether to enable millisecond timestamp.
@@ -27,6 +28,7 @@ pub struct InstantSealParams {
 
 /// Instant seal engine descriptor.
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 pub struct InstantSeal {
 	/// Instant seal parameters.
 	pub params: InstantSealParams,

json/src/spec/null_engine.rs

@@ -20,6 +20,7 @@ use uint::Uint;
 
 /// Authority params deserialization.
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 #[serde(rename_all = "camelCase")]
 pub struct NullEngineParams {
 	/// Block reward.
@@ -28,6 +29,7 @@ pub struct NullEngineParams {
 
 /// Null engine descriptor
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 pub struct NullEngine {
 	/// Ethash params.
 	pub params: NullEngineParams,

json/src/spec/params.rs

@@ -22,6 +22,7 @@ use bytes::Bytes;
 
 /// Spec params.
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 #[serde(rename_all = "camelCase")]
 pub struct Params {
 	/// Account start nonce, defaults to 0.

json/src/spec/seal.rs

@@ -22,6 +22,7 @@ use bytes::Bytes;
 
 /// Ethereum seal.
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 #[serde(rename_all = "camelCase")]
 pub struct Ethereum {
 	/// Seal nonce.
@@ -32,6 +33,7 @@ pub struct Ethereum {
 
 /// AuthorityRound seal.
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 pub struct AuthorityRoundSeal {
 	/// Seal step.
 	pub step: Uint,
@@ -41,6 +43,7 @@ pub struct AuthorityRoundSeal {
 
 /// Tendermint seal.
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 pub struct TendermintSeal {
 	/// Seal round.
 	pub round: Uint,
@@ -52,6 +55,7 @@ pub struct TendermintSeal {
 
 /// Seal variants.
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 #[serde(rename_all = "camelCase")]
 pub enum Seal {
 	/// Ethereum seal.

json/src/spec/spec.rs

@@ -38,6 +38,7 @@ pub enum ForkSpec {
 
 /// Spec deserialization.
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 #[serde(rename_all = "camelCase")]
 pub struct Spec {
 	/// Spec name.
@@ -70,6 +71,71 @@ mod tests {
 	use serde_json;
 	use spec::spec::Spec;
 
+	#[test]
+	fn should_error_on_unknown_fields() {
+		let s = r#"{
+	"name": "Morden",
+	"dataDir": "morden",
+	"engine": {
+		"Ethash": {
+			"params": {
+				"minimumDifficulty": "0x020000",
+				"difficultyBoundDivisor": "0x0800",
+				"durationLimit": "0x0d",
+				"homesteadTransition" : "0x",
+				"daoHardforkTransition": "0xffffffffffffffff",
+				"daoHardforkBeneficiary": "0x0000000000000000000000000000000000000000",
+				"daoHardforkAccounts": []
+			}
+		}
+	},
+	"params": {
+		"accountStartNonce": "0x0100000",
+		"maximumExtraDataSize": "0x20",
+		"minGasLimit": "0x1388",
+		"networkID" : "0x2",
+		"forkBlock": "0xffffffffffffffff",
+		"forkCanonHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
+		"gasLimitBoundDivisor": "0x20",
+		"unknownField": "0x0"
+	},
+	"genesis": {
+		"seal": {
+			"ethereum": {
+				"mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
+				"nonce": "0x00006d6f7264656e"
+			}
+		},
+		"difficulty": "0x20000",
+		"author": "0x0000000000000000000000000000000000000000",
+		"timestamp": "0x00",
+		"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
+		"extraData": "0x",
+		"gasLimit": "0x2fefd8"
+	},
+	"nodes": [
+		"enode://b1217cbaa440e35ed471157123fe468e19e8b5ad5bedb4b1fdbcbdab6fb2f5ed3e95dd9c24a22a79fdb2352204cea207df27d92bfd21bfd41545e8b16f637499@104.44.138.37:30303"
+	],
+	"accounts": {
+		"0000000000000000000000000000000000000001": { "balance": "1", "nonce": "1048576", "builtin": { "name": "ecrecover", "pricing": { "linear": { "base": 3000, "word": 0 } } } },
+		"0000000000000000000000000000000000000002": { "balance": "1", "nonce": "1048576", "builtin": { "name": "sha256", "pricing": { "linear": { "base": 60, "word": 12 } } } },
+		"0000000000000000000000000000000000000003": { "balance": "1", "nonce": "1048576", "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
+		"0000000000000000000000000000000000000004": { "balance": "1", "nonce": "1048576", "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
+		"102e61f5d8f9bc71d0ad4a084df4e65e05ce0e1c": { "balance": "1606938044258990275541962092341162602522202993782792835301376", "nonce": "1048576" }
+	},
+	"hardcodedSync": {
+		"header": "f901f9a0d405da4e66f1445d455195229624e133f5baafe72b5cf7b3c36c12c8146e98b7a01dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347948888f1f195afa192cfee860698584c030f4c9db1a05fb2b4bfdef7b314451cb138a534d225c922fc0e5fbe25e451142732c3e25c25a088d2ec6b9860aae1a2c3b299f72b6a5d70d7f7ba4722c78f2c49ba96273c2158a007c6fdfa8eea7e86b81f5b0fc0f78f90cc19f4aa60d323151e0cac660199e9a1b90100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008302008003832fefba82524d84568e932a80a0a0349d8c3df71f1a48a9df7d03fd5f14aeee7d91332c009ecaff0a71ead405bd88ab4e252a7e8c2a23",
+		"totalDifficulty": "0x400000000",
+		"CHTs": [
+			"0x11bbe8db4e347b4e8c937c1c8370e4b5ed33adb3db69cbdb7a38e1e50b1b82fa",
+			"0xd7f8974fb5ac78d9ac099b9ad5018bedc2ce0a72dad1827a1709da30580f0544"
+		]
+	}
+		}"#;
+		let result: Result<Spec, _> = serde_json::from_str(s);
+		assert!(result.is_err());
+	}
+
 	#[test]
 	fn spec_deserialization() {
 		let s = r#"{
@@ -90,7 +156,6 @@ mod tests {
 	},
 	"params": {
 		"accountStartNonce": "0x0100000",
-		"homesteadTransition": "0x789b0",
 		"maximumExtraDataSize": "0x20",
 		"minGasLimit": "0x1388",
 		"networkID" : "0x2",

json/src/spec/state.rs

@@ -23,6 +23,7 @@ use spec::{Account, Builtin};
 
 /// Blockchain test state deserializer.
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 pub struct State(BTreeMap<Address, Account>);
 
 impl State {

json/src/spec/tendermint.rs

@@ -21,6 +21,7 @@ use super::ValidatorSet;
 
 /// Tendermint params deserialization.
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 #[serde(rename_all = "camelCase")]
 pub struct TendermintParams {
 	/// Valid validators.
@@ -39,6 +40,7 @@ pub struct TendermintParams {
 
 /// Tendermint engine deserialization.
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 pub struct Tendermint {
 	/// Ethash params.
 	pub params: TendermintParams,

json/src/spec/validator_set.rs

@@ -22,6 +22,7 @@ use hash::Address;
 
 /// Different ways of specifying validators.
 #[derive(Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 #[serde(rename_all = "camelCase")]
 pub enum ValidatorSet {
 	/// A simple list of authorities.

rpc/src/v1/tests/eth.rs

@@ -277,6 +277,7 @@ const TRANSACTION_COUNT_SPEC: &'static [u8] = br#"{
 			"params": {
 				"minimumDifficulty": "0x020000",
 				"difficultyBoundDivisor": "0x0800",
+				"blockReward": "0x4563918244F40000",
 				"durationLimit": "0x0d",
 				"homesteadTransition": "0xffffffffffffffff",
 				"daoHardforkTransition": "0xffffffffffffffff",
@@ -287,7 +288,6 @@ const TRANSACTION_COUNT_SPEC: &'static [u8] = br#"{
 	},
 	"params": {
 		"gasLimitBoundDivisor": "0x0400",
-		"blockReward": "0x4563918244F40000",
 		"registrar" : "0xc6d9d2cd449a754c494264e1809c50e34d64562b",
 		"accountStartNonce": "0x00",
 		"maximumExtraDataSize": "0x20",
@@ -325,6 +325,7 @@ const POSITIVE_NONCE_SPEC: &'static [u8] = br#"{
 			"params": {
 				"minimumDifficulty": "0x020000",
 				"difficultyBoundDivisor": "0x0800",
+				"blockReward": "0x4563918244F40000",
 				"durationLimit": "0x0d",
 				"homesteadTransition": "0xffffffffffffffff",
 				"daoHardforkTransition": "0xffffffffffffffff",
@@ -335,7 +336,6 @@ const POSITIVE_NONCE_SPEC: &'static [u8] = br#"{
 	},
 	"params": {
 		"gasLimitBoundDivisor": "0x0400",
-		"blockReward": "0x4563918244F40000",
 		"registrar" : "0xc6d9d2cd449a754c494264e1809c50e34d64562b",
 		"accountStartNonce": "0x0100",
 		"maximumExtraDataSize": "0x20",