358 lines
12 KiB
Go
358 lines
12 KiB
Go
package wasm
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import (
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"math"
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wasmvmtypes "github.com/CosmWasm/wasmvm/types"
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sdk "github.com/cosmos/cosmos-sdk/types"
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sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
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capabilitytypes "github.com/cosmos/cosmos-sdk/x/capability/types"
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channeltypes "github.com/cosmos/ibc-go/v4/modules/core/04-channel/types"
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porttypes "github.com/cosmos/ibc-go/v4/modules/core/05-port/types"
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host "github.com/cosmos/ibc-go/v4/modules/core/24-host"
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ibcexported "github.com/cosmos/ibc-go/v4/modules/core/exported"
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"github.com/cerc-io/laconicd/x/wasm/types"
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)
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var _ porttypes.IBCModule = IBCHandler{}
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// internal interface that is implemented by ibc middleware
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type appVersionGetter interface {
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// GetAppVersion returns the application level version with all middleware data stripped out
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GetAppVersion(ctx sdk.Context, portID, channelID string) (string, bool)
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}
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type IBCHandler struct {
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keeper types.IBCContractKeeper
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channelKeeper types.ChannelKeeper
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appVersionGetter appVersionGetter
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}
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func NewIBCHandler(k types.IBCContractKeeper, ck types.ChannelKeeper, vg appVersionGetter) IBCHandler {
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return IBCHandler{keeper: k, channelKeeper: ck, appVersionGetter: vg}
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}
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// OnChanOpenInit implements the IBCModule interface
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func (i IBCHandler) OnChanOpenInit(
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ctx sdk.Context,
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order channeltypes.Order,
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connectionHops []string,
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portID string,
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channelID string,
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chanCap *capabilitytypes.Capability,
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counterParty channeltypes.Counterparty,
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version string,
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) (string, error) {
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// ensure port, version, capability
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if err := ValidateChannelParams(channelID); err != nil {
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return "", err
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}
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contractAddr, err := ContractFromPortID(portID)
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if err != nil {
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return "", sdkerrors.Wrapf(err, "contract port id")
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}
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msg := wasmvmtypes.IBCChannelOpenMsg{
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OpenInit: &wasmvmtypes.IBCOpenInit{
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Channel: wasmvmtypes.IBCChannel{
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Endpoint: wasmvmtypes.IBCEndpoint{PortID: portID, ChannelID: channelID},
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CounterpartyEndpoint: wasmvmtypes.IBCEndpoint{PortID: counterParty.PortId, ChannelID: counterParty.ChannelId},
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Order: order.String(),
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// DESIGN V3: this may be "" ??
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Version: version,
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ConnectionID: connectionHops[0], // At the moment this list must be of length 1. In the future multi-hop channels may be supported.
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},
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},
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}
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// Allow contracts to return a version (or default to proposed version if unset)
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acceptedVersion, err := i.keeper.OnOpenChannel(ctx, contractAddr, msg)
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if err != nil {
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return "", err
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}
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if acceptedVersion == "" {
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acceptedVersion = version
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}
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// Claim channel capability passed back by IBC module
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if err := i.keeper.ClaimCapability(ctx, chanCap, host.ChannelCapabilityPath(portID, channelID)); err != nil {
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return "", sdkerrors.Wrap(err, "claim capability")
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}
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return acceptedVersion, nil
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}
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// OnChanOpenTry implements the IBCModule interface
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func (i IBCHandler) OnChanOpenTry(
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ctx sdk.Context,
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order channeltypes.Order,
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connectionHops []string,
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portID, channelID string,
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chanCap *capabilitytypes.Capability,
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counterParty channeltypes.Counterparty,
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counterpartyVersion string,
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) (string, error) {
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// ensure port, version, capability
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if err := ValidateChannelParams(channelID); err != nil {
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return "", err
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}
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contractAddr, err := ContractFromPortID(portID)
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if err != nil {
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return "", sdkerrors.Wrapf(err, "contract port id")
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}
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msg := wasmvmtypes.IBCChannelOpenMsg{
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OpenTry: &wasmvmtypes.IBCOpenTry{
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Channel: wasmvmtypes.IBCChannel{
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Endpoint: wasmvmtypes.IBCEndpoint{PortID: portID, ChannelID: channelID},
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CounterpartyEndpoint: wasmvmtypes.IBCEndpoint{PortID: counterParty.PortId, ChannelID: counterParty.ChannelId},
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Order: order.String(),
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Version: counterpartyVersion,
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ConnectionID: connectionHops[0], // At the moment this list must be of length 1. In the future multi-hop channels may be supported.
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},
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CounterpartyVersion: counterpartyVersion,
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},
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}
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// Allow contracts to return a version (or default to counterpartyVersion if unset)
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version, err := i.keeper.OnOpenChannel(ctx, contractAddr, msg)
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if err != nil {
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return "", err
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}
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if version == "" {
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version = counterpartyVersion
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}
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// Module may have already claimed capability in OnChanOpenInit in the case of crossing hellos
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// (ie chainA and chainB both call ChanOpenInit before one of them calls ChanOpenTry)
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// If module can already authenticate the capability then module already owns it, so we don't need to claim
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// Otherwise, module does not have channel capability, and we must claim it from IBC
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if !i.keeper.AuthenticateCapability(ctx, chanCap, host.ChannelCapabilityPath(portID, channelID)) {
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// Only claim channel capability passed back by IBC module if we do not already own it
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if err := i.keeper.ClaimCapability(ctx, chanCap, host.ChannelCapabilityPath(portID, channelID)); err != nil {
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return "", sdkerrors.Wrap(err, "claim capability")
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}
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}
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return version, nil
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}
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// OnChanOpenAck implements the IBCModule interface
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func (i IBCHandler) OnChanOpenAck(
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ctx sdk.Context,
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portID, channelID string,
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counterpartyChannelID string,
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counterpartyVersion string,
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) error {
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contractAddr, err := ContractFromPortID(portID)
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if err != nil {
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return sdkerrors.Wrapf(err, "contract port id")
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}
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channelInfo, ok := i.channelKeeper.GetChannel(ctx, portID, channelID)
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if !ok {
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return sdkerrors.Wrapf(channeltypes.ErrChannelNotFound, "port ID (%s) channel ID (%s)", portID, channelID)
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}
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channelInfo.Counterparty.ChannelId = counterpartyChannelID
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appVersion, ok := i.appVersionGetter.GetAppVersion(ctx, portID, channelID)
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if !ok {
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return sdkerrors.Wrapf(channeltypes.ErrInvalidChannelVersion, "port ID (%s) channel ID (%s)", portID, channelID)
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}
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msg := wasmvmtypes.IBCChannelConnectMsg{
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OpenAck: &wasmvmtypes.IBCOpenAck{
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Channel: toWasmVMChannel(portID, channelID, channelInfo, appVersion),
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CounterpartyVersion: counterpartyVersion,
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},
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}
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return i.keeper.OnConnectChannel(ctx, contractAddr, msg)
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}
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// OnChanOpenConfirm implements the IBCModule interface
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func (i IBCHandler) OnChanOpenConfirm(ctx sdk.Context, portID, channelID string) error {
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contractAddr, err := ContractFromPortID(portID)
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if err != nil {
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return sdkerrors.Wrapf(err, "contract port id")
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}
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channelInfo, ok := i.channelKeeper.GetChannel(ctx, portID, channelID)
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if !ok {
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return sdkerrors.Wrapf(channeltypes.ErrChannelNotFound, "port ID (%s) channel ID (%s)", portID, channelID)
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}
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appVersion, ok := i.appVersionGetter.GetAppVersion(ctx, portID, channelID)
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if !ok {
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return sdkerrors.Wrapf(channeltypes.ErrInvalidChannelVersion, "port ID (%s) channel ID (%s)", portID, channelID)
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}
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msg := wasmvmtypes.IBCChannelConnectMsg{
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OpenConfirm: &wasmvmtypes.IBCOpenConfirm{
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Channel: toWasmVMChannel(portID, channelID, channelInfo, appVersion),
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},
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}
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return i.keeper.OnConnectChannel(ctx, contractAddr, msg)
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}
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// OnChanCloseInit implements the IBCModule interface
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func (i IBCHandler) OnChanCloseInit(ctx sdk.Context, portID, channelID string) error {
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contractAddr, err := ContractFromPortID(portID)
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if err != nil {
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return sdkerrors.Wrapf(err, "contract port id")
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}
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channelInfo, ok := i.channelKeeper.GetChannel(ctx, portID, channelID)
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if !ok {
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return sdkerrors.Wrapf(channeltypes.ErrChannelNotFound, "port ID (%s) channel ID (%s)", portID, channelID)
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}
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appVersion, ok := i.appVersionGetter.GetAppVersion(ctx, portID, channelID)
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if !ok {
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return sdkerrors.Wrapf(channeltypes.ErrInvalidChannelVersion, "port ID (%s) channel ID (%s)", portID, channelID)
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}
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msg := wasmvmtypes.IBCChannelCloseMsg{
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CloseInit: &wasmvmtypes.IBCCloseInit{Channel: toWasmVMChannel(portID, channelID, channelInfo, appVersion)},
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}
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err = i.keeper.OnCloseChannel(ctx, contractAddr, msg)
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if err != nil {
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return err
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}
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// emit events?
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return err
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}
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// OnChanCloseConfirm implements the IBCModule interface
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func (i IBCHandler) OnChanCloseConfirm(ctx sdk.Context, portID, channelID string) error {
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// counterparty has closed the channel
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contractAddr, err := ContractFromPortID(portID)
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if err != nil {
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return sdkerrors.Wrapf(err, "contract port id")
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}
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channelInfo, ok := i.channelKeeper.GetChannel(ctx, portID, channelID)
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if !ok {
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return sdkerrors.Wrapf(channeltypes.ErrChannelNotFound, "port ID (%s) channel ID (%s)", portID, channelID)
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}
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appVersion, ok := i.appVersionGetter.GetAppVersion(ctx, portID, channelID)
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if !ok {
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return sdkerrors.Wrapf(channeltypes.ErrInvalidChannelVersion, "port ID (%s) channel ID (%s)", portID, channelID)
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}
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msg := wasmvmtypes.IBCChannelCloseMsg{
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CloseConfirm: &wasmvmtypes.IBCCloseConfirm{Channel: toWasmVMChannel(portID, channelID, channelInfo, appVersion)},
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}
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err = i.keeper.OnCloseChannel(ctx, contractAddr, msg)
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if err != nil {
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return err
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}
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// emit events?
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return err
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}
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func toWasmVMChannel(portID, channelID string, channelInfo channeltypes.Channel, appVersion string) wasmvmtypes.IBCChannel {
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return wasmvmtypes.IBCChannel{
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Endpoint: wasmvmtypes.IBCEndpoint{PortID: portID, ChannelID: channelID},
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CounterpartyEndpoint: wasmvmtypes.IBCEndpoint{PortID: channelInfo.Counterparty.PortId, ChannelID: channelInfo.Counterparty.ChannelId},
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Order: channelInfo.Ordering.String(),
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Version: appVersion,
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ConnectionID: channelInfo.ConnectionHops[0], // At the moment this list must be of length 1. In the future multi-hop channels may be supported.
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}
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}
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// OnRecvPacket implements the IBCModule interface
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func (i IBCHandler) OnRecvPacket(
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ctx sdk.Context,
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packet channeltypes.Packet,
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relayer sdk.AccAddress,
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) ibcexported.Acknowledgement {
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contractAddr, err := ContractFromPortID(packet.DestinationPort)
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if err != nil {
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return channeltypes.NewErrorAcknowledgement(sdkerrors.Wrapf(err, "contract port id"))
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}
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msg := wasmvmtypes.IBCPacketReceiveMsg{Packet: newIBCPacket(packet), Relayer: relayer.String()}
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ack, err := i.keeper.OnRecvPacket(ctx, contractAddr, msg)
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if err != nil {
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return channeltypes.NewErrorAcknowledgement(err)
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}
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return ContractConfirmStateAck(ack)
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}
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var _ ibcexported.Acknowledgement = ContractConfirmStateAck{}
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type ContractConfirmStateAck []byte
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func (w ContractConfirmStateAck) Success() bool {
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return true // always commit state
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}
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func (w ContractConfirmStateAck) Acknowledgement() []byte {
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return w
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}
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// OnAcknowledgementPacket implements the IBCModule interface
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func (i IBCHandler) OnAcknowledgementPacket(
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ctx sdk.Context,
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packet channeltypes.Packet,
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acknowledgement []byte,
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relayer sdk.AccAddress,
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) error {
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contractAddr, err := ContractFromPortID(packet.SourcePort)
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if err != nil {
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return sdkerrors.Wrapf(err, "contract port id")
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}
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err = i.keeper.OnAckPacket(ctx, contractAddr, wasmvmtypes.IBCPacketAckMsg{
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Acknowledgement: wasmvmtypes.IBCAcknowledgement{Data: acknowledgement},
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OriginalPacket: newIBCPacket(packet),
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Relayer: relayer.String(),
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})
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if err != nil {
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return sdkerrors.Wrap(err, "on ack")
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}
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return nil
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}
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// OnTimeoutPacket implements the IBCModule interface
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func (i IBCHandler) OnTimeoutPacket(ctx sdk.Context, packet channeltypes.Packet, relayer sdk.AccAddress) error {
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contractAddr, err := ContractFromPortID(packet.SourcePort)
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if err != nil {
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return sdkerrors.Wrapf(err, "contract port id")
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}
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msg := wasmvmtypes.IBCPacketTimeoutMsg{Packet: newIBCPacket(packet), Relayer: relayer.String()}
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err = i.keeper.OnTimeoutPacket(ctx, contractAddr, msg)
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if err != nil {
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return sdkerrors.Wrap(err, "on timeout")
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}
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return nil
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}
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func newIBCPacket(packet channeltypes.Packet) wasmvmtypes.IBCPacket {
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timeout := wasmvmtypes.IBCTimeout{
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Timestamp: packet.TimeoutTimestamp,
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}
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if !packet.TimeoutHeight.IsZero() {
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timeout.Block = &wasmvmtypes.IBCTimeoutBlock{
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Height: packet.TimeoutHeight.RevisionHeight,
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Revision: packet.TimeoutHeight.RevisionNumber,
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}
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}
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return wasmvmtypes.IBCPacket{
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Data: packet.Data,
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Src: wasmvmtypes.IBCEndpoint{ChannelID: packet.SourceChannel, PortID: packet.SourcePort},
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Dest: wasmvmtypes.IBCEndpoint{ChannelID: packet.DestinationChannel, PortID: packet.DestinationPort},
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Sequence: packet.Sequence,
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Timeout: timeout,
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}
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}
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func ValidateChannelParams(channelID string) error {
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// NOTE: for escrow address security only 2^32 channels are allowed to be created
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// Issue: https://github.com/cosmos/cosmos-sdk/issues/7737
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channelSequence, err := channeltypes.ParseChannelSequence(channelID)
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if err != nil {
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return err
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}
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if channelSequence > math.MaxUint32 {
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return sdkerrors.Wrapf(types.ErrMaxIBCChannels, "channel sequence %d is greater than max allowed transfer channels %d", channelSequence, math.MaxUint32)
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}
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return nil
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}
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