157 lines
4.9 KiB
Go
157 lines
4.9 KiB
Go
package main
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"time"
|
|
|
|
"github.com/filecoin-project/go-address"
|
|
"github.com/filecoin-project/go-state-types/abi"
|
|
"github.com/filecoin-project/lotus/api"
|
|
"github.com/filecoin-project/lotus/build"
|
|
"github.com/filecoin-project/lotus/chain/types"
|
|
"github.com/filecoin-project/lotus/node/impl/full"
|
|
"github.com/ipfs/go-cid"
|
|
)
|
|
|
|
const (
|
|
LookbackCap = time.Hour
|
|
stateWaitLookbackLimit = abi.ChainEpoch(20)
|
|
)
|
|
|
|
var (
|
|
ErrLookbackTooLong = fmt.Errorf("lookbacks of more than %s are disallowed", LookbackCap)
|
|
)
|
|
|
|
type rpcAPI interface {
|
|
ChainHead(ctx context.Context) (*types.TipSet, error)
|
|
ChainGetTipSet(ctx context.Context, tsk types.TipSetKey) (*types.TipSet, error)
|
|
ChainGetTipSetByHeight(ctx context.Context, h abi.ChainEpoch, tsk types.TipSetKey) (*types.TipSet, error)
|
|
GasEstimateMessageGas(ctx context.Context, msg *types.Message, spec *api.MessageSendSpec, tsk types.TipSetKey) (*types.Message, error)
|
|
MpoolPushUntrusted(ctx context.Context, sm *types.SignedMessage) (cid.Cid, error)
|
|
StateAccountKey(ctx context.Context, addr address.Address, tsk types.TipSetKey) (address.Address, error)
|
|
StateGetActor(ctx context.Context, actor address.Address, ts types.TipSetKey) (*types.Actor, error)
|
|
StateLookupID(ctx context.Context, addr address.Address, tsk types.TipSetKey) (address.Address, error)
|
|
StateWaitMsgLimited(ctx context.Context, msg cid.Cid, confidence uint64, h abi.ChainEpoch) (*api.MsgLookup, error)
|
|
}
|
|
|
|
type GatewayAPI struct {
|
|
rpc rpcAPI
|
|
}
|
|
|
|
func (a *GatewayAPI) checkTipsetKey(ctx context.Context, tsk types.TipSetKey) error {
|
|
if tsk.IsEmpty() {
|
|
return nil
|
|
}
|
|
|
|
ts, err := a.rpc.ChainGetTipSet(ctx, tsk)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return a.checkTipset(ts)
|
|
}
|
|
|
|
func (a *GatewayAPI) checkTipset(ts *types.TipSet) error {
|
|
at := time.Unix(int64(ts.Blocks()[0].Timestamp), 0)
|
|
if err := a.checkTimestamp(at); err != nil {
|
|
return fmt.Errorf("bad tipset: %w", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (a *GatewayAPI) checkTipsetHeight(ts *types.TipSet, h abi.ChainEpoch) error {
|
|
tsBlock := ts.Blocks()[0]
|
|
heightDelta := time.Duration(uint64(tsBlock.Height-h)*build.BlockDelaySecs) * time.Second
|
|
timeAtHeight := time.Unix(int64(tsBlock.Timestamp), 0).Add(-heightDelta)
|
|
|
|
if err := a.checkTimestamp(timeAtHeight); err != nil {
|
|
return fmt.Errorf("bad tipset height: %w", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (a *GatewayAPI) checkTimestamp(at time.Time) error {
|
|
if time.Since(at) > LookbackCap {
|
|
return ErrLookbackTooLong
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (a *GatewayAPI) ChainHead(ctx context.Context) (*types.TipSet, error) {
|
|
// TODO: cache and invalidate cache when timestamp is up (or have internal ChainNotify)
|
|
|
|
return a.rpc.ChainHead(ctx)
|
|
}
|
|
|
|
func (a *GatewayAPI) ChainGetTipSet(ctx context.Context, tsk types.TipSetKey) (*types.TipSet, error) {
|
|
return a.rpc.ChainGetTipSet(ctx, tsk)
|
|
}
|
|
|
|
func (a *GatewayAPI) ChainGetTipSetByHeight(ctx context.Context, h abi.ChainEpoch, tsk types.TipSetKey) (*types.TipSet, error) {
|
|
ts, err := a.rpc.ChainGetTipSet(ctx, tsk)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Check if the tipset key refers to a tipset that's too far in the past
|
|
if err := a.checkTipset(ts); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Check if the height is too far in the past
|
|
if err := a.checkTipsetHeight(ts, h); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return a.rpc.ChainGetTipSetByHeight(ctx, h, tsk)
|
|
}
|
|
|
|
func (a *GatewayAPI) GasEstimateMessageGas(ctx context.Context, msg *types.Message, spec *api.MessageSendSpec, tsk types.TipSetKey) (*types.Message, error) {
|
|
if err := a.checkTipsetKey(ctx, tsk); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return a.rpc.GasEstimateMessageGas(ctx, msg, spec, tsk)
|
|
}
|
|
|
|
func (a *GatewayAPI) MpoolPush(ctx context.Context, sm *types.SignedMessage) (cid.Cid, error) {
|
|
// TODO: additional anti-spam checks
|
|
return a.rpc.MpoolPushUntrusted(ctx, sm)
|
|
}
|
|
|
|
func (a *GatewayAPI) StateAccountKey(ctx context.Context, addr address.Address, tsk types.TipSetKey) (address.Address, error) {
|
|
if err := a.checkTipsetKey(ctx, tsk); err != nil {
|
|
return address.Undef, err
|
|
}
|
|
|
|
return a.rpc.StateAccountKey(ctx, addr, tsk)
|
|
}
|
|
|
|
func (a *GatewayAPI) StateGetActor(ctx context.Context, actor address.Address, tsk types.TipSetKey) (*types.Actor, error) {
|
|
if err := a.checkTipsetKey(ctx, tsk); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return a.rpc.StateGetActor(ctx, actor, tsk)
|
|
}
|
|
|
|
func (a *GatewayAPI) StateLookupID(ctx context.Context, addr address.Address, tsk types.TipSetKey) (address.Address, error) {
|
|
if err := a.checkTipsetKey(ctx, tsk); err != nil {
|
|
return address.Undef, err
|
|
}
|
|
|
|
return a.rpc.StateLookupID(ctx, addr, tsk)
|
|
}
|
|
|
|
func (a *GatewayAPI) StateWaitMsg(ctx context.Context, msg cid.Cid, confidence uint64) (*api.MsgLookup, error) {
|
|
return a.rpc.StateWaitMsgLimited(ctx, msg, confidence, stateWaitLookbackLimit)
|
|
}
|
|
|
|
var _ api.GatewayAPI = (*GatewayAPI)(nil)
|
|
var _ full.ChainModuleAPI = (*GatewayAPI)(nil)
|
|
var _ full.GasModuleAPI = (*GatewayAPI)(nil)
|
|
var _ full.MpoolModuleAPI = (*GatewayAPI)(nil)
|
|
var _ full.StateModuleAPI = (*GatewayAPI)(nil)
|