Create Agent (#47)

* add hashed description

* use existing account

* add call filter

parachains/runtimes/bridge-hubs/bridge-hub-rococo/src/lib.rs

@@ -70,7 +70,7 @@ use frame_system::{
 pub use sp_consensus_aura::sr25519::AuthorityId as AuraId;
 pub use sp_runtime::{MultiAddress, Perbill, Permill};
 use xcm::v3::NetworkId::{self, Rococo};
-use xcm_config::{XcmConfig, XcmOriginToTransactDispatchOrigin};
+use xcm_config::{XcmConfig, XcmOriginToTransactDispatchOrigin, LocalOriginToLocation};
 
 use bp_parachains::SingleParaStoredHeaderDataBuilder;
 use bp_runtime::HeaderId;
@@ -103,7 +103,7 @@ use parachains_common::{
 	impls::DealWithFees, opaque, AccountId, Balance, BlockNumber, Hash, Header, Index, Signature,
 	AVERAGE_ON_INITIALIZE_RATIO, HOURS, MAXIMUM_BLOCK_WEIGHT, NORMAL_DISPATCH_RATIO, SLOT_DURATION,
 };
-use xcm_builder::{EnsureXcmOrigin, SignedToAccountId32};
+use xcm_builder::EnsureXcmOrigin;
 use xcm_executor::XcmExecutor;
 
 /// The address format for describing accounts.
@@ -673,15 +673,14 @@ parameter_types! {
 	pub const RelayNetwork: NetworkId = Rococo;
 }
 
-pub type LocalOriginToLocation = SignedToAccountId32<RuntimeOrigin, AccountId, RelayNetwork>;
 impl snowbridge_control::Config for Runtime {
 	type RuntimeEvent = RuntimeEvent;
 	type OwnParaId = ParachainInfo;
 	type OutboundQueue = EthereumOutboundQueue;
 	type MessageHasher = BlakeTwo256;
 	type WeightInfo = ();
 	type MaxUpgradeDataSize = MaxUpgradeDataSize;
-	type EnsureCreateAgentOrigin = EnsureXcmOrigin<RuntimeOrigin, LocalOriginToLocation>;
+	type CreateAgentOrigin = EnsureXcmOrigin<RuntimeOrigin, LocalOriginToLocation>;
 }
 
 // Create the runtime by composing the FRAME pallets that were previously configured.

parachains/runtimes/bridge-hubs/bridge-hub-rococo/src/xcm_config.rs

@@ -39,11 +39,12 @@ use xcm::latest::prelude::*;
 use xcm_builder::{
 	AccountId32Aliases, AllowExplicitUnpaidExecutionFrom, AllowKnownQueryResponses,
 	AllowSubscriptionsFrom, AllowTopLevelPaidExecutionFrom, AllowUnpaidExecutionFrom,
-	CurrencyAdapter, DenyReserveTransferToRelayChain, DenyThenTry, EnsureXcmOrigin, IsConcrete,
-	ParentAsSuperuser, ParentIsPreset, RelayChainAsNative, SiblingParachainAsNative,
-	SiblingParachainConvertsVia, SignedAccountId32AsNative, SignedToAccountId32,
-	SovereignSignedViaLocation, TakeWeightCredit, TrailingSetTopicAsId, UsingComponents,
-	WeightInfoBounds, WithComputedOrigin, WithUniqueTopic,
+	CurrencyAdapter, DenyReserveTransferToRelayChain, DenyThenTry, DescribeAllTerminal,
+	DescribeFamily, EnsureXcmOrigin, HashedDescription, IsConcrete, ParentAsSuperuser,
+	ParentIsPreset, RelayChainAsNative, SiblingParachainAsNative, SiblingParachainConvertsVia,
+	SignedAccountId32AsNative, SignedToAccountId32, SovereignSignedViaLocation,
+	TakeWeightCredit, TrailingSetTopicAsId, UsingComponents, WeightInfoBounds,
+	WithComputedOrigin, WithUniqueTopic,
 };
 use xcm_executor::{
 	traits::{ExportXcm, WithOriginFilter},
@@ -98,6 +99,8 @@ pub type LocationToAccountId = (
 	SiblingParachainConvertsVia<Sibling, AccountId>,
 	// Straight up local `AccountId32` origins just alias directly to `AccountId`.
 	AccountId32Aliases<RelayNetwork, AccountId>,
+	// Foreign locations alias into accounts according to a hash of their standard description.
+	HashedDescription<AccountId, DescribeFamily<DescribeAllTerminal>>,
 );
 
 /// Means for transacting the native currency on this chain.
@@ -218,7 +221,10 @@ impl Contains<RuntimeCall> for SafeCallFilter {
 			) | RuntimeCall::EthereumOutboundQueue(
 				snowbridge_outbound_queue::Call::set_owner { .. }
 					| snowbridge_outbound_queue::Call::set_operating_mode { .. },
-			) | RuntimeCall::EthereumControl(snowbridge_control::Call::upgrade { .. },)
+			) | RuntimeCall::EthereumControl(
+				snowbridge_control::Call::upgrade { .. }
+				| snowbridge_control::Call::create_agent { .. },
+			)
 		)
 	}
 }