Adds Snowbridge to Rococo runtime (#2522)

# Description Adds Snowbridge to the Rococo bridge hub runtime. Includes config changes required in Rococo asset hub. --------- Co-authored-by: Alistair Singh <alistair.singh7@gmail.com> Co-authored-by: ron <yrong1997@gmail.com> Co-authored-by: Vincent Geddes <vincent.geddes@hey.com> Co-authored-by: claravanstaden <Cats 4 life!>
2026-05-30 22:11:02 +00:00 · 2023-12-21 18:06:36 +02:00
parent 9f5221cc2f
commit 18d53dbf91
151 changed files with 19379 additions and 149 deletions
@@ -58,6 +58,37 @@ impl<SelfParaId: Get<ParaId>> ContainsPair<MultiLocation, MultiLocation>
 	}
 }

+/// Checks if `a` is from the expected global consensus network. Checks that `MultiLocation-a`
+/// starts with `MultiLocation-b`, and that network is a foreign consensus system.
+pub struct FromNetwork<UniversalLocation, ExpectedNetworkId>(
+	sp_std::marker::PhantomData<(UniversalLocation, ExpectedNetworkId)>,
+);
+impl<UniversalLocation: Get<InteriorMultiLocation>, ExpectedNetworkId: Get<NetworkId>>
+	ContainsPair<MultiLocation, MultiLocation> for FromNetwork<UniversalLocation, ExpectedNetworkId>
+{
+	fn contains(&a: &MultiLocation, b: &MultiLocation) -> bool {
+		// `a` needs to be from `b` at least
+		if !a.starts_with(b) {
+			return false
+		}
+
+		let universal_source = UniversalLocation::get();
+
+		// ensure that `a`` is remote and from the expected network
+		match ensure_is_remote(universal_source, a) {
+			Ok((network_id, _)) => network_id == ExpectedNetworkId::get(),
+			Err(e) => {
+				log::trace!(
+					target: "xcm::contains",
+					"FromNetwork origin: {:?} is not remote to the universal_source: {:?} {:?}",
+					a, universal_source, e
+				);
+				false
+			},
+		}
+	}
+}
+
 /// Adapter verifies if it is allowed to receive `MultiAsset` from `MultiLocation`.
 ///
 /// Note: `MultiLocation` has to be from a different global consensus.
@@ -95,3 +126,92 @@ impl<
 		Reserves::contains(asset, origin)
 	}
 }
+
+#[cfg(test)]
+mod tests {
+	use super::*;
+	use frame_support::parameter_types;
+
+	parameter_types! {
+		pub UniversalLocation: InteriorMultiLocation = X2(GlobalConsensus(Rococo), Parachain(1000));
+		pub ExpectedNetworkId: NetworkId = Wococo;
+	}
+
+	#[test]
+	fn from_network_contains_works() {
+		// asset and origin from foreign consensus works
+		let asset: MultiLocation = (
+			Parent,
+			Parent,
+			GlobalConsensus(Wococo),
+			Parachain(1000),
+			PalletInstance(1),
+			GeneralIndex(1),
+		)
+			.into();
+		let origin: MultiLocation =
+			(Parent, Parent, GlobalConsensus(Wococo), Parachain(1000)).into();
+		assert!(FromNetwork::<UniversalLocation, ExpectedNetworkId>::contains(&asset, &origin));
+
+		// asset and origin from local consensus fails
+		let asset: MultiLocation = (
+			Parent,
+			Parent,
+			GlobalConsensus(Rococo),
+			Parachain(1000),
+			PalletInstance(1),
+			GeneralIndex(1),
+		)
+			.into();
+		let origin: MultiLocation =
+			(Parent, Parent, GlobalConsensus(Rococo), Parachain(1000)).into();
+		assert!(!FromNetwork::<UniversalLocation, ExpectedNetworkId>::contains(&asset, &origin));
+
+		// asset and origin from here fails
+		let asset: MultiLocation = (PalletInstance(1), GeneralIndex(1)).into();
+		let origin: MultiLocation = Here.into();
+		assert!(!FromNetwork::<UniversalLocation, ExpectedNetworkId>::contains(&asset, &origin));
+
+		// asset from different consensus fails
+		let asset: MultiLocation = (
+			Parent,
+			Parent,
+			GlobalConsensus(Polkadot),
+			Parachain(1000),
+			PalletInstance(1),
+			GeneralIndex(1),
+		)
+			.into();
+		let origin: MultiLocation =
+			(Parent, Parent, GlobalConsensus(Wococo), Parachain(1000)).into();
+		assert!(!FromNetwork::<UniversalLocation, ExpectedNetworkId>::contains(&asset, &origin));
+
+		// origin from different consensus fails
+		let asset: MultiLocation = (
+			Parent,
+			Parent,
+			GlobalConsensus(Wococo),
+			Parachain(1000),
+			PalletInstance(1),
+			GeneralIndex(1),
+		)
+			.into();
+		let origin: MultiLocation =
+			(Parent, Parent, GlobalConsensus(Polkadot), Parachain(1000)).into();
+		assert!(!FromNetwork::<UniversalLocation, ExpectedNetworkId>::contains(&asset, &origin));
+
+		// asset and origin from unexpected consensus fails
+		let asset: MultiLocation = (
+			Parent,
+			Parent,
+			GlobalConsensus(Polkadot),
+			Parachain(1000),
+			PalletInstance(1),
+			GeneralIndex(1),
+		)
+			.into();
+		let origin: MultiLocation =
+			(Parent, Parent, GlobalConsensus(Polkadot), Parachain(1000)).into();
+		assert!(!FromNetwork::<UniversalLocation, ExpectedNetworkId>::contains(&asset, &origin));
+	}
+}