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verify.go
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verify.go
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package keeper
import (
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
clientexported "github.com/cosmos/cosmos-sdk/x/ibc/02-client/exported"
clienttypes "github.com/cosmos/cosmos-sdk/x/ibc/02-client/types"
"github.com/cosmos/cosmos-sdk/x/ibc/03-connection/exported"
channelexported "github.com/cosmos/cosmos-sdk/x/ibc/04-channel/exported"
commitmentexported "github.com/cosmos/cosmos-sdk/x/ibc/23-commitment/exported"
)
// VerifyClientConsensusState verifies a proof of the consensus state of the
// specified client stored on the target machine.
func (k Keeper) VerifyClientConsensusState(
ctx sdk.Context,
connection exported.ConnectionI,
height uint64,
consensusHeight uint64,
proof commitmentexported.Proof,
consensusState clientexported.ConsensusState,
) error {
clientID := connection.GetClientID()
clientState, found := k.clientKeeper.GetClientState(ctx, clientID)
if !found {
return sdkerrors.Wrap(clienttypes.ErrClientNotFound, clientID)
}
targetConsState, found := k.clientKeeper.GetClientConsensusState(ctx, clientID, height)
if !found {
return sdkerrors.Wrapf(clienttypes.ErrConsensusStateNotFound, "clientID: %s with height: %d", clientID, height)
}
return clientState.VerifyClientConsensusState(
k.clientKeeper.ClientStore(ctx, clientID), k.aminoCdc, targetConsState.GetRoot(), height,
connection.GetCounterparty().GetClientID(), consensusHeight, connection.GetCounterparty().GetPrefix(), proof, consensusState,
)
}
// VerifyConnectionState verifies a proof of the connection state of the
// specified connection end stored on the target machine.
func (k Keeper) VerifyConnectionState(
ctx sdk.Context,
connection exported.ConnectionI,
height uint64,
proof commitmentexported.Proof,
connectionID string,
connectionEnd exported.ConnectionI, // opposite connection
) error {
clientState, found := k.clientKeeper.GetClientState(ctx, connection.GetClientID())
if !found {
return sdkerrors.Wrap(clienttypes.ErrClientNotFound, connection.GetClientID())
}
// TODO: move to specific clients; blocked by #5502
consensusState, found := k.clientKeeper.GetClientConsensusState(
ctx, connection.GetClientID(), height,
)
if !found {
return sdkerrors.Wrapf(
clienttypes.ErrConsensusStateNotFound,
"clientID (%s), height (%d)", connection.GetClientID(), height,
)
}
return clientState.VerifyConnectionState(
k.clientKeeper.ClientStore(ctx, connection.GetClientID()), k.cdc, height,
connection.GetCounterparty().GetPrefix(), proof, connectionID, connectionEnd, consensusState,
)
}
// VerifyChannelState verifies a proof of the channel state of the specified
// channel end, under the specified port, stored on the target machine.
func (k Keeper) VerifyChannelState(
ctx sdk.Context,
connection exported.ConnectionI,
height uint64,
proof commitmentexported.Proof,
portID,
channelID string,
channel channelexported.ChannelI,
) error {
clientState, found := k.clientKeeper.GetClientState(ctx, connection.GetClientID())
if !found {
return sdkerrors.Wrap(clienttypes.ErrClientNotFound, connection.GetClientID())
}
// TODO: move to specific clients; blocked by #5502
consensusState, found := k.clientKeeper.GetClientConsensusState(
ctx, connection.GetClientID(), height,
)
if !found {
return sdkerrors.Wrapf(
clienttypes.ErrConsensusStateNotFound,
"clientID (%s), height (%d)", connection.GetClientID(), height,
)
}
return clientState.VerifyChannelState(
k.clientKeeper.ClientStore(ctx, connection.GetClientID()), k.cdc, height,
connection.GetCounterparty().GetPrefix(), proof,
portID, channelID, channel, consensusState,
)
}
// VerifyPacketCommitment verifies a proof of an outgoing packet commitment at
// the specified port, specified channel, and specified sequence.
func (k Keeper) VerifyPacketCommitment(
ctx sdk.Context,
connection exported.ConnectionI,
height uint64,
proof commitmentexported.Proof,
portID,
channelID string,
sequence uint64,
commitmentBytes []byte,
) error {
clientState, found := k.clientKeeper.GetClientState(ctx, connection.GetClientID())
if !found {
return sdkerrors.Wrap(clienttypes.ErrClientNotFound, connection.GetClientID())
}
// TODO: move to specific clients; blocked by #5502
consensusState, found := k.clientKeeper.GetClientConsensusState(
ctx, connection.GetClientID(), height,
)
if !found {
return sdkerrors.Wrapf(
clienttypes.ErrConsensusStateNotFound,
"clientID (%s), height (%d)", connection.GetClientID(), height,
)
}
return clientState.VerifyPacketCommitment(
k.clientKeeper.ClientStore(ctx, connection.GetClientID()), height,
connection.GetCounterparty().GetPrefix(), proof, portID, channelID,
sequence, commitmentBytes, consensusState,
)
}
// VerifyPacketAcknowledgement verifies a proof of an incoming packet
// acknowledgement at the specified port, specified channel, and specified sequence.
func (k Keeper) VerifyPacketAcknowledgement(
ctx sdk.Context,
connection exported.ConnectionI,
height uint64,
proof commitmentexported.Proof,
portID,
channelID string,
sequence uint64,
acknowledgement []byte,
) error {
clientState, found := k.clientKeeper.GetClientState(ctx, connection.GetClientID())
if !found {
return sdkerrors.Wrap(clienttypes.ErrClientNotFound, connection.GetClientID())
}
// TODO: move to specific clients; blocked by #5502
consensusState, found := k.clientKeeper.GetClientConsensusState(
ctx, connection.GetClientID(), height,
)
if !found {
return sdkerrors.Wrapf(
clienttypes.ErrConsensusStateNotFound,
"clientID (%s), height (%d)", connection.GetClientID(), height,
)
}
return clientState.VerifyPacketAcknowledgement(
k.clientKeeper.ClientStore(ctx, connection.GetClientID()), height,
connection.GetCounterparty().GetPrefix(), proof, portID, channelID,
sequence, acknowledgement, consensusState,
)
}
// VerifyPacketAcknowledgementAbsence verifies a proof of the absence of an
// incoming packet acknowledgement at the specified port, specified channel, and
// specified sequence.
func (k Keeper) VerifyPacketAcknowledgementAbsence(
ctx sdk.Context,
connection exported.ConnectionI,
height uint64,
proof commitmentexported.Proof,
portID,
channelID string,
sequence uint64,
) error {
clientState, found := k.clientKeeper.GetClientState(ctx, connection.GetClientID())
if !found {
return sdkerrors.Wrap(clienttypes.ErrClientNotFound, connection.GetClientID())
}
// TODO: move to specific clients; blocked by #5502
consensusState, found := k.clientKeeper.GetClientConsensusState(
ctx, connection.GetClientID(), height,
)
if !found {
return sdkerrors.Wrapf(
clienttypes.ErrConsensusStateNotFound,
"clientID (%s), height (%d)", connection.GetClientID(), height,
)
}
return clientState.VerifyPacketAcknowledgementAbsence(
k.clientKeeper.ClientStore(ctx, connection.GetClientID()), height,
connection.GetCounterparty().GetPrefix(), proof, portID, channelID,
sequence, consensusState,
)
}
// VerifyNextSequenceRecv verifies a proof of the next sequence number to be
// received of the specified channel at the specified port.
func (k Keeper) VerifyNextSequenceRecv(
ctx sdk.Context,
connection exported.ConnectionI,
height uint64,
proof commitmentexported.Proof,
portID,
channelID string,
nextSequenceRecv uint64,
) error {
clientState, found := k.clientKeeper.GetClientState(ctx, connection.GetClientID())
if !found {
return sdkerrors.Wrap(clienttypes.ErrClientNotFound, connection.GetClientID())
}
// TODO: move to specific clients; blocked by #5502
consensusState, found := k.clientKeeper.GetClientConsensusState(
ctx, connection.GetClientID(), height,
)
if !found {
return sdkerrors.Wrapf(
clienttypes.ErrConsensusStateNotFound,
"clientID (%s), height (%d)", connection.GetClientID(), height,
)
}
return clientState.VerifyNextSequenceRecv(
k.clientKeeper.ClientStore(ctx, connection.GetClientID()), height,
connection.GetCounterparty().GetPrefix(), proof, portID, channelID,
nextSequenceRecv, consensusState,
)
}