wasmd/x/wasm/ibc.go

272 lines
9.6 KiB
Go

package wasm
import (
wasmTypes "github.com/CosmWasm/wasmd/x/wasm/internal/types"
wasmvmtypes "github.com/CosmWasm/wasmvm/types"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
capabilitytypes "github.com/cosmos/cosmos-sdk/x/capability/types"
channeltypes "github.com/cosmos/cosmos-sdk/x/ibc/core/04-channel/types"
porttypes "github.com/cosmos/cosmos-sdk/x/ibc/core/05-port/types"
host "github.com/cosmos/cosmos-sdk/x/ibc/core/24-host"
"math"
)
var _ porttypes.IBCModule = IBCHandler{}
type IBCHandler struct {
keeper Keeper
channelKeeper wasmTypes.ChannelKeeper
}
func NewIBCHandler(keeper Keeper) IBCHandler {
return IBCHandler{keeper: keeper, channelKeeper: keeper.ChannelKeeper}
}
// OnChanOpenInit implements the IBCModule interface
func (i IBCHandler) OnChanOpenInit(
ctx sdk.Context,
order channeltypes.Order,
connectionHops []string,
portID string,
channelID string,
chanCap *capabilitytypes.Capability,
counterParty channeltypes.Counterparty,
version string,
) error {
// ensure port, version, capability
if err := ValidateChannelParams(channelID); err != nil {
return err
}
contractAddr, err := ContractFromPortID(portID)
if err != nil {
return sdkerrors.Wrapf(err, "contract port id")
}
err = i.keeper.OnOpenChannel(ctx, contractAddr, wasmvmtypes.IBCChannel{
Endpoint: wasmvmtypes.IBCEndpoint{PortID: portID, ChannelID: channelID},
CounterpartyEndpoint: wasmvmtypes.IBCEndpoint{PortID: counterParty.PortId, ChannelID: counterParty.ChannelId},
Order: order.String(),
Version: version,
ConnectionID: connectionHops[0], // At the moment this list must be of length 1. In the future multi-hop channels may be supported.
})
if err != nil {
return err
}
// Claim channel capability passed back by IBC module
if err := i.keeper.ClaimCapability(ctx, chanCap, host.ChannelCapabilityPath(portID, channelID)); err != nil {
return sdkerrors.Wrap(err, "claim capability")
}
return nil
}
// OnChanOpenTry implements the IBCModule interface
func (i IBCHandler) OnChanOpenTry(
ctx sdk.Context,
order channeltypes.Order,
connectionHops []string,
portID, channelID string,
chanCap *capabilitytypes.Capability,
counterParty channeltypes.Counterparty,
version, counterpartyVersion string,
) error {
// ensure port, version, capability
if err := ValidateChannelParams(channelID); err != nil {
return err
}
contractAddr, err := ContractFromPortID(portID)
if err != nil {
return sdkerrors.Wrapf(err, "contract port id")
}
err = i.keeper.OnOpenChannel(ctx, contractAddr, wasmvmtypes.IBCChannel{
Endpoint: wasmvmtypes.IBCEndpoint{PortID: portID, ChannelID: channelID},
CounterpartyEndpoint: wasmvmtypes.IBCEndpoint{PortID: counterParty.PortId, ChannelID: counterParty.ChannelId},
Order: order.String(),
Version: version,
CounterpartyVersion: counterpartyVersion,
ConnectionID: connectionHops[0], // At the moment this list must be of length 1. In the future multi-hop channels may be supported.
})
if err != nil {
return err
}
// Module may have already claimed capability in OnChanOpenInit in the case of crossing hellos
// (ie chainA and chainB both call ChanOpenInit before one of them calls ChanOpenTry)
// If module can already authenticate the capability then module already owns it so we don't need to claim
// Otherwise, module does not have channel capability and we must claim it from IBC
if !i.keeper.AuthenticateCapability(ctx, chanCap, host.ChannelCapabilityPath(portID, channelID)) {
// Only claim channel capability passed back by IBC module if we do not already own it
if err := i.keeper.ClaimCapability(ctx, chanCap, host.ChannelCapabilityPath(portID, channelID)); err != nil {
return sdkerrors.Wrap(err, "claim capability")
}
}
return nil
}
// OnChanOpenAck implements the IBCModule interface
func (i IBCHandler) OnChanOpenAck(
ctx sdk.Context,
portID, channelID string,
counterpartyVersion string,
) error {
contractAddr, err := ContractFromPortID(portID)
if err != nil {
return sdkerrors.Wrapf(err, "contract port id")
}
channelInfo, ok := i.channelKeeper.GetChannel(ctx, portID, channelID)
if !ok {
return sdkerrors.Wrapf(channeltypes.ErrChannelNotFound, "port ID (%s) channel ID (%s)", portID, channelID)
}
return i.keeper.OnConnectChannel(ctx, contractAddr, toWasmVMChannel(portID, channelID, channelInfo, counterpartyVersion))
}
// OnChanOpenConfirm implements the IBCModule interface
func (i IBCHandler) OnChanOpenConfirm(ctx sdk.Context, portID, channelID string) error {
contractAddr, err := ContractFromPortID(portID)
if err != nil {
return sdkerrors.Wrapf(err, "contract port id")
}
channelInfo, ok := i.channelKeeper.GetChannel(ctx, portID, channelID)
if !ok {
return sdkerrors.Wrapf(channeltypes.ErrChannelNotFound, "port ID (%s) channel ID (%s)", portID, channelID)
}
return i.keeper.OnConnectChannel(ctx, contractAddr, toWasmVMChannel(portID, channelID, channelInfo, ""))
}
// OnChanCloseInit implements the IBCModule interface
func (i IBCHandler) OnChanCloseInit(ctx sdk.Context, portID, channelID string) error {
contractAddr, err := ContractFromPortID(portID)
if err != nil {
return sdkerrors.Wrapf(err, "contract port id")
}
channelInfo, ok := i.channelKeeper.GetChannel(ctx, portID, channelID)
if !ok {
return sdkerrors.Wrapf(channeltypes.ErrChannelNotFound, "port ID (%s) channel ID (%s)", portID, channelID)
}
err = i.keeper.OnCloseChannel(ctx, contractAddr, toWasmVMChannel(portID, channelID, channelInfo, ""))
if err != nil {
return err
}
// emit events?
return err
}
// OnChanCloseConfirm implements the IBCModule interface
func (i IBCHandler) OnChanCloseConfirm(ctx sdk.Context, portID, channelID string) error {
// counterparty has closed the channel
contractAddr, err := ContractFromPortID(portID)
if err != nil {
return sdkerrors.Wrapf(err, "contract port id")
}
channelInfo, ok := i.channelKeeper.GetChannel(ctx, portID, channelID)
if !ok {
return sdkerrors.Wrapf(channeltypes.ErrChannelNotFound, "port ID (%s) channel ID (%s)", portID, channelID)
}
err = i.keeper.OnCloseChannel(ctx, contractAddr, toWasmVMChannel(portID, channelID, channelInfo, ""))
if err != nil {
return err
}
// emit events?
return err
}
func toWasmVMChannel(portID, channelID string, channelInfo channeltypes.Channel, counterpartyVersion string) wasmvmtypes.IBCChannel {
return wasmvmtypes.IBCChannel{
Endpoint: wasmvmtypes.IBCEndpoint{PortID: portID, ChannelID: channelID},
CounterpartyEndpoint: wasmvmtypes.IBCEndpoint{PortID: channelInfo.Counterparty.PortId, ChannelID: channelInfo.Counterparty.ChannelId},
Order: channelInfo.Ordering.String(),
Version: channelInfo.Version,
ConnectionID: channelInfo.ConnectionHops[0], // At the moment this list must be of length 1. In the future multi-hop channels may be supported.
CounterpartyVersion: counterpartyVersion,
}
}
// OnRecvPacket implements the IBCModule interface
func (i IBCHandler) OnRecvPacket(
ctx sdk.Context,
packet channeltypes.Packet,
) (*sdk.Result, []byte, error) {
contractAddr, err := ContractFromPortID(packet.DestinationPort)
if err != nil {
return nil, nil, sdkerrors.Wrapf(err, "contract port id")
}
msgBz, err := i.keeper.OnRecvPacket(ctx, contractAddr, newIBCPacket(packet))
if err != nil {
return nil, nil, err
}
return &sdk.Result{
Events: ctx.EventManager().Events().ToABCIEvents(),
}, msgBz, nil
}
// OnAcknowledgementPacket implements the IBCModule interface
func (i IBCHandler) OnAcknowledgementPacket(ctx sdk.Context, packet channeltypes.Packet, acknowledgement []byte) (*sdk.Result, error) {
contractAddr, err := ContractFromPortID(packet.SourcePort)
if err != nil {
return nil, sdkerrors.Wrapf(err, "contract port id")
}
err = i.keeper.OnAckPacket(ctx, contractAddr, wasmvmtypes.IBCAcknowledgement{
Acknowledgement: acknowledgement,
OriginalPacket: newIBCPacket(packet),
})
if err != nil {
return nil, err
}
return &sdk.Result{
Events: ctx.EventManager().Events().ToABCIEvents(),
}, nil
}
// OnTimeoutPacket implements the IBCModule interface
func (i IBCHandler) OnTimeoutPacket(ctx sdk.Context, packet channeltypes.Packet) (*sdk.Result, error) {
contractAddr, err := ContractFromPortID(packet.SourcePort)
if err != nil {
return nil, sdkerrors.Wrapf(err, "contract port id")
}
err = i.keeper.OnTimeoutPacket(ctx, contractAddr, newIBCPacket(packet))
if err != nil {
return nil, err
}
return &sdk.Result{
Events: ctx.EventManager().Events().ToABCIEvents(),
}, nil
}
func newIBCPacket(packet channeltypes.Packet) wasmvmtypes.IBCPacket {
return wasmvmtypes.IBCPacket{
Data: packet.Data,
Src: wasmvmtypes.IBCEndpoint{ChannelID: packet.SourceChannel, PortID: packet.SourcePort},
Dest: wasmvmtypes.IBCEndpoint{ChannelID: packet.DestinationChannel, PortID: packet.DestinationPort},
Sequence: packet.Sequence,
TimeoutBlock: &wasmvmtypes.IBCTimeoutBlock{
Height: packet.TimeoutHeight.RevisionHeight,
Revision: packet.TimeoutHeight.RevisionNumber,
},
TimeoutTimestamp: &packet.TimeoutTimestamp,
}
}
func ValidateChannelParams(channelID string) error {
// NOTE: for escrow address security only 2^32 channels are allowed to be created
// Issue: https://github.com/cosmos/cosmos-sdk/issues/7737
channelSequence, err := channeltypes.ParseChannelSequence(channelID)
if err != nil {
return err
}
if channelSequence > math.MaxUint32 {
return sdkerrors.Wrapf(wasmTypes.ErrMaxIBCChannels, "channel sequence %d is greater than max allowed transfer channels %d", channelSequence, math.MaxUint32)
}
return nil
}