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Configure Statemint and Statemine to Allow Teleports #794

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Configure Statemint and Statemine to Allow Teleports #794

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15204f6
configure pallet-xcm to allow teleports but forbid generic sends
apopiak Nov 24, 2021
4204a39
bump spec_version
apopiak Nov 24, 2021
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configure pallet-xcm to allow teleports but forbid generic sends
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@apopiak
apopiak committed Nov 24, 2021
commit 15204f690ee3ae485384df4ed3f598091190a67b
13 changes: 9 additions & 4 deletions polkadot-parachains/statemine/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -75,7 +75,8 @@ use xcm_builder::{
ConvertedConcreteAssetId, CurrencyAdapter, EnsureXcmOrigin, FixedWeightBounds,
FungiblesAdapter, IsConcrete, LocationInverter, NativeAsset, ParentAsSuperuser,
ParentIsDefault, RelayChainAsNative, SiblingParachainAsNative, SiblingParachainConvertsVia,
SignedAccountId32AsNative, SovereignSignedViaLocation, TakeWeightCredit, UsingComponents,
SignedAccountId32AsNative, SignedToAccountId32, SovereignSignedViaLocation, TakeWeightCredit,
UsingComponents,
};
use xcm_executor::{traits::JustTry, Config, XcmExecutor};

Expand Down Expand Up @@ -560,8 +561,9 @@ parameter_types! {
pub const MaxDownwardMessageWeight: Weight = MAXIMUM_BLOCK_WEIGHT / 10;
}

/// No local origins on this chain are allowed to dispatch XCM sends/executions.
pub type LocalOriginToLocation = ();
/// Converts a local signed origin into an XCM multilocation.
/// Forms the basis for local origins sending/executing XCMs.
pub type LocalOriginToLocation = SignedToAccountId32<Origin, AccountId, RelayNetwork>;

/// The means for routing XCM messages which are not for local execution into the right message
/// queues.
Expand All @@ -574,9 +576,12 @@ pub type XcmRouter = (

impl pallet_xcm::Config for Runtime {
type Event = Event;
type SendXcmOrigin = EnsureXcmOrigin<Origin, LocalOriginToLocation>;
// We want to disallow users sending (arbitrary) XCMs from this chain.
type SendXcmOrigin = EnsureXcmOrigin<Origin, ()>;
type XcmRouter = XcmRouter;
// We support local origins dispatching XCM executions in principle...
type ExecuteXcmOrigin = EnsureXcmOrigin<Origin, LocalOriginToLocation>;
// ... but disallow generic XCM execution. As a result only teleports and reserve transfers are allowed.
type XcmExecuteFilter = Nothing;
type XcmExecutor = XcmExecutor<XcmConfig>;
type XcmTeleportFilter = Everything;
Expand Down
13 changes: 9 additions & 4 deletions polkadot-parachains/statemint/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -75,7 +75,8 @@ use xcm_builder::{
ConvertedConcreteAssetId, CurrencyAdapter, EnsureXcmOrigin, FixedWeightBounds,
FungiblesAdapter, IsConcrete, LocationInverter, NativeAsset, ParentAsSuperuser,
ParentIsDefault, RelayChainAsNative, SiblingParachainAsNative, SiblingParachainConvertsVia,
SignedAccountId32AsNative, SovereignSignedViaLocation, TakeWeightCredit, UsingComponents,
SignedAccountId32AsNative, SignedToAccountId32, SovereignSignedViaLocation, TakeWeightCredit,
UsingComponents,
};
use xcm_executor::{traits::JustTry, Config, XcmExecutor};

Expand Down Expand Up @@ -572,8 +573,9 @@ parameter_types! {
pub const MaxDownwardMessageWeight: Weight = MAXIMUM_BLOCK_WEIGHT / 10;
}

/// No local origins on this chain are allowed to dispatch XCM sends/executions.
pub type LocalOriginToLocation = ();
/// Converts a local signed origin into an XCM multilocation.
/// Forms the basis for local origins sending/executing XCMs.
pub type LocalOriginToLocation = SignedToAccountId32<Origin, AccountId, RelayNetwork>;

/// The means for routing XCM messages which are not for local execution into the right message
/// queues.
Expand All @@ -586,9 +588,12 @@ pub type XcmRouter = (

impl pallet_xcm::Config for Runtime {
type Event = Event;
type SendXcmOrigin = EnsureXcmOrigin<Origin, LocalOriginToLocation>;
// We want to disallow users sending (arbitrary) XCMs from this chain.
type SendXcmOrigin = EnsureXcmOrigin<Origin, ()>;
type XcmRouter = XcmRouter;
// We support local origins dispatching XCM executions in principle...
type ExecuteXcmOrigin = EnsureXcmOrigin<Origin, LocalOriginToLocation>;
// ... but disallow generic XCM execution. As a result only teleports and reserve transfers are allowed.
type XcmExecuteFilter = Nothing;
type XcmExecutor = XcmExecutor<XcmConfig>;
type XcmTeleportFilter = Everything;
Expand Down