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2029a06918
To separate blinded route parsing from payload parsing, we need to return the parsed types map so that we can properly validate blinded data payloads against what we saw in the onion.
762 lines
17 KiB
Go
762 lines
17 KiB
Go
package hop_test
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import (
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"bytes"
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"encoding/hex"
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"reflect"
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"testing"
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"github.com/btcsuite/btcd/btcec/v2"
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"github.com/lightningnetwork/lnd/htlcswitch/hop"
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"github.com/lightningnetwork/lnd/lnwire"
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"github.com/lightningnetwork/lnd/record"
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"github.com/lightningnetwork/lnd/tlv"
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"github.com/stretchr/testify/require"
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)
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var (
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//nolint:lll
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testPrivKeyBytes, _ = hex.DecodeString("e126f68f7eafcc8b74f54d269fe206be715000f94dac067d1c04a8ca3b2db734")
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_, testPubKey = btcec.PrivKeyFromBytes(testPrivKeyBytes)
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)
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const testUnknownRequiredType = 0x80
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type decodePayloadTest struct {
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name string
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payload []byte
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isFinalHop bool
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expErr error
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expCustomRecords map[uint64][]byte
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shouldHaveMPP bool
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shouldHaveAMP bool
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shouldHaveEncData bool
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shouldHaveBlinding bool
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shouldHaveMetadata bool
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shouldHaveTotalAmt bool
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}
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var decodePayloadTests = []decodePayloadTest{
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{
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name: "final hop valid",
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isFinalHop: true,
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payload: []byte{0x02, 0x00, 0x04, 0x00},
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},
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{
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name: "intermediate hop valid",
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isFinalHop: false,
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payload: []byte{0x02, 0x00, 0x04, 0x00, 0x06, 0x08, 0x01, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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},
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},
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{
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name: "final hop no amount",
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payload: []byte{0x04, 0x00},
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isFinalHop: true,
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expErr: hop.ErrInvalidPayload{
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Type: record.AmtOnionType,
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Violation: hop.OmittedViolation,
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FinalHop: true,
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},
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},
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{
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name: "intermediate hop no amount",
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isFinalHop: false,
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payload: []byte{0x04, 0x00, 0x06, 0x08, 0x01, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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},
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expErr: hop.ErrInvalidPayload{
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Type: record.AmtOnionType,
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Violation: hop.OmittedViolation,
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FinalHop: false,
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},
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},
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{
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name: "final hop no expiry",
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isFinalHop: true,
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payload: []byte{0x02, 0x00},
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expErr: hop.ErrInvalidPayload{
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Type: record.LockTimeOnionType,
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Violation: hop.OmittedViolation,
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FinalHop: true,
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},
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},
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{
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name: "intermediate hop no expiry",
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isFinalHop: false,
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payload: []byte{0x02, 0x00, 0x06, 0x08, 0x01, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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},
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expErr: hop.ErrInvalidPayload{
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Type: record.LockTimeOnionType,
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Violation: hop.OmittedViolation,
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FinalHop: false,
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},
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},
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{
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name: "final hop next sid present",
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isFinalHop: true,
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payload: []byte{0x02, 0x00, 0x04, 0x00, 0x06, 0x08, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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},
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expErr: hop.ErrInvalidPayload{
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Type: record.NextHopOnionType,
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Violation: hop.IncludedViolation,
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FinalHop: true,
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},
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},
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{
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name: "required type after omitted hop id",
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isFinalHop: true,
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payload: []byte{
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0x02, 0x00, 0x04, 0x00,
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testUnknownRequiredType, 0x00,
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},
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expErr: hop.ErrInvalidPayload{
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Type: testUnknownRequiredType,
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Violation: hop.RequiredViolation,
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FinalHop: true,
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},
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},
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{
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name: "required type after included hop id",
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isFinalHop: false,
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payload: []byte{
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0x02, 0x00, 0x04, 0x00, 0x06, 0x08, 0x01, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00,
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testUnknownRequiredType, 0x00,
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},
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expErr: hop.ErrInvalidPayload{
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Type: testUnknownRequiredType,
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Violation: hop.RequiredViolation,
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FinalHop: false,
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},
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},
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{
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name: "required type zero final hop",
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isFinalHop: true,
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payload: []byte{0x00, 0x00, 0x02, 0x00, 0x04, 0x00},
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expErr: hop.ErrInvalidPayload{
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Type: 0,
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Violation: hop.RequiredViolation,
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FinalHop: true,
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},
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},
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{
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name: "required type zero final hop zero sid",
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isFinalHop: true,
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payload: []byte{0x00, 0x00, 0x02, 0x00, 0x04, 0x00, 0x06, 0x08,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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},
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expErr: hop.ErrInvalidPayload{
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Type: record.NextHopOnionType,
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Violation: hop.IncludedViolation,
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FinalHop: true,
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},
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},
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{
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name: "required type zero intermediate hop",
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isFinalHop: false,
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payload: []byte{0x00, 0x00, 0x02, 0x00, 0x04, 0x00, 0x06, 0x08,
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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},
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expErr: hop.ErrInvalidPayload{
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Type: 0,
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Violation: hop.RequiredViolation,
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FinalHop: false,
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},
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},
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{
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name: "required type in custom range",
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isFinalHop: false,
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payload: []byte{
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// amount
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0x02, 0x00,
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// cltv
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0x04, 0x00,
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// next hop id
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0x06, 0x08,
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// custom
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0xfe, 0x00, 0x01, 0x00, 0x00, 0x02, 0x10, 0x11,
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},
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expCustomRecords: map[uint64][]byte{
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65536: {0x10, 0x11},
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},
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},
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{
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name: "valid intermediate hop",
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isFinalHop: false,
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payload: []byte{0x02, 0x00, 0x04, 0x00, 0x06, 0x08, 0x01, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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},
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expErr: nil,
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},
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{
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name: "valid final hop",
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isFinalHop: true,
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payload: []byte{0x02, 0x00, 0x04, 0x00},
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expErr: nil,
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},
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{
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name: "intermediate hop with mpp",
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isFinalHop: false,
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payload: []byte{
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// amount
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0x02, 0x00,
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// cltv
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0x04, 0x00,
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// next hop id
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0x06, 0x08,
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// mpp
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0x08, 0x21,
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0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
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0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
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0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
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0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
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0x08,
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},
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expErr: hop.ErrInvalidPayload{
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Type: record.MPPOnionType,
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Violation: hop.IncludedViolation,
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FinalHop: false,
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},
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},
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{
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name: "intermediate hop with amp",
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isFinalHop: false,
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payload: []byte{
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// amount
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0x02, 0x00,
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// cltv
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0x04, 0x00,
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// next hop id
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0x06, 0x08,
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// amp
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0x0e, 0x41,
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// amp.root_share
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0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12,
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0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12,
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0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12,
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0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12,
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// amp.set_id
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0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13,
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0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13,
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0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13,
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0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13,
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// amp.child_index
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0x09,
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},
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expErr: hop.ErrInvalidPayload{
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Type: record.AMPOnionType,
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Violation: hop.IncludedViolation,
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FinalHop: false,
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},
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},
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{
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name: "intermediate hop no next channel",
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isFinalHop: false,
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payload: []byte{
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// amount
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0x02, 0x00,
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// cltv
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0x04, 0x00,
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},
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expErr: hop.ErrInvalidPayload{
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Type: record.NextHopOnionType,
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Violation: hop.OmittedViolation,
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FinalHop: false,
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},
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},
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{
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name: "intermediate hop with encrypted data",
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isFinalHop: false,
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payload: []byte{
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// encrypted data
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0x0a, 0x03, 0x03, 0x02, 0x01,
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},
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shouldHaveEncData: true,
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},
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{
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name: "intermediate hop with blinding point",
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isFinalHop: false,
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payload: append([]byte{
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// encrypted data
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0x0a, 0x03, 0x03, 0x02, 0x01,
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// blinding point (type / length)
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0x0c, 0x21,
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},
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// blinding point (value)
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testPubKey.SerializeCompressed()...,
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),
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shouldHaveBlinding: true,
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shouldHaveEncData: true,
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},
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{
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name: "final hop with mpp",
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isFinalHop: true,
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payload: []byte{
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// amount
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0x02, 0x00,
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// cltv
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0x04, 0x00,
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// mpp
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0x08, 0x21,
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0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
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0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
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0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
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0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
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0x08,
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},
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expErr: nil,
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shouldHaveMPP: true,
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},
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{
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name: "final hop with amp",
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isFinalHop: true,
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payload: []byte{
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// amount
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0x02, 0x00,
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// cltv
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0x04, 0x00,
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// amp
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0x0e, 0x41,
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// amp.root_share
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0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12,
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0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12,
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0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12,
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0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12,
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// amp.set_id
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0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13,
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0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13,
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0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13,
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0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13,
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// amp.child_index
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0x09,
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},
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shouldHaveAMP: true,
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},
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{
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name: "final hop with metadata",
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isFinalHop: true,
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payload: []byte{
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// amount
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0x02, 0x00,
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// cltv
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0x04, 0x00,
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// metadata
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0x10, 0x03, 0x01, 0x02, 0x03,
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},
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shouldHaveMetadata: true,
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},
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{
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name: "final hop with total amount",
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isFinalHop: true,
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payload: []byte{
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// amount
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0x02, 0x00,
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// cltv
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0x04, 0x00,
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// total amount
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0x12, 0x01, 0x01,
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},
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shouldHaveTotalAmt: true,
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},
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{
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name: "final blinded hop with total amount",
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isFinalHop: true,
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payload: []byte{
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// amount
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0x02, 0x00,
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// cltv
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0x04, 0x00,
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// encrypted data
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0x0a, 0x03, 0x03, 0x02, 0x01,
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},
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shouldHaveEncData: true,
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},
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{
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name: "final blinded missing amt",
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isFinalHop: true,
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payload: []byte{
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// cltv
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0x04, 0x00,
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// encrypted data
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0x0a, 0x03, 0x03, 0x02, 0x01,
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},
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shouldHaveEncData: true,
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expErr: hop.ErrInvalidPayload{
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Type: record.AmtOnionType,
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Violation: hop.OmittedViolation,
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FinalHop: true,
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},
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},
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{
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name: "final blinded missing cltv",
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isFinalHop: true,
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payload: []byte{
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// amount
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0x02, 0x00,
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// encrypted data
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0x0a, 0x03, 0x03, 0x02, 0x01,
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},
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shouldHaveEncData: true,
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expErr: hop.ErrInvalidPayload{
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Type: record.LockTimeOnionType,
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Violation: hop.OmittedViolation,
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FinalHop: true,
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},
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},
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{
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name: "intermediate blinded has amount",
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isFinalHop: false,
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payload: []byte{
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// amount
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0x02, 0x00,
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// encrypted data
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0x0a, 0x03, 0x03, 0x02, 0x01,
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},
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expErr: hop.ErrInvalidPayload{
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Type: record.AmtOnionType,
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Violation: hop.IncludedViolation,
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FinalHop: false,
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},
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},
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{
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name: "intermediate blinded has expiry",
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isFinalHop: false,
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payload: []byte{
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// cltv
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0x04, 0x00,
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// encrypted data
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0x0a, 0x03, 0x03, 0x02, 0x01,
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},
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expErr: hop.ErrInvalidPayload{
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Type: record.LockTimeOnionType,
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Violation: hop.IncludedViolation,
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FinalHop: false,
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},
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},
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}
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|
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// TestDecodeHopPayloadRecordValidation asserts that parsing the payloads in the
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// tests yields the expected errors depending on whether the proper fields were
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// included or omitted.
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func TestDecodeHopPayloadRecordValidation(t *testing.T) {
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for _, test := range decodePayloadTests {
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t.Run(test.name, func(t *testing.T) {
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testDecodeHopPayloadValidation(t, test)
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})
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}
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}
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func testDecodeHopPayloadValidation(t *testing.T, test decodePayloadTest) {
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var (
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testTotalMsat = lnwire.MilliSatoshi(8)
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testAddr = [32]byte{
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0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
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0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
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0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
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0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
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}
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testRootShare = [32]byte{
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0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12,
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0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12,
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0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12,
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0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12,
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}
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testSetID = [32]byte{
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0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13,
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0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13,
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0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13,
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0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13,
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}
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testEncData = []byte{3, 2, 1}
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testMetadata = []byte{1, 2, 3}
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|
testChildIndex = uint32(9)
|
|
)
|
|
|
|
p, _, err := hop.NewPayloadFromReader(
|
|
bytes.NewReader(test.payload), test.isFinalHop,
|
|
)
|
|
if !reflect.DeepEqual(test.expErr, err) {
|
|
t.Fatalf("expected error mismatch, want: %v, got: %v",
|
|
test.expErr, err)
|
|
}
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
// Assert MPP fields if we expect them.
|
|
if test.shouldHaveMPP {
|
|
if p.MPP == nil {
|
|
t.Fatalf("payload should have MPP record")
|
|
}
|
|
if p.MPP.TotalMsat() != testTotalMsat {
|
|
t.Fatalf("invalid total msat")
|
|
}
|
|
if p.MPP.PaymentAddr() != testAddr {
|
|
t.Fatalf("invalid payment addr")
|
|
}
|
|
} else if p.MPP != nil {
|
|
t.Fatalf("unexpected MPP payload")
|
|
}
|
|
|
|
if test.shouldHaveAMP {
|
|
if p.AMP == nil {
|
|
t.Fatalf("payload should have AMP record")
|
|
}
|
|
require.Equal(t, testRootShare, p.AMP.RootShare())
|
|
require.Equal(t, testSetID, p.AMP.SetID())
|
|
require.Equal(t, testChildIndex, p.AMP.ChildIndex())
|
|
} else if p.AMP != nil {
|
|
t.Fatalf("unexpected AMP payload")
|
|
}
|
|
|
|
if test.shouldHaveMetadata {
|
|
if p.Metadata() == nil {
|
|
t.Fatalf("payload should have metadata")
|
|
}
|
|
require.Equal(t, testMetadata, p.Metadata())
|
|
} else if p.Metadata() != nil {
|
|
t.Fatalf("unexpected metadata")
|
|
}
|
|
|
|
if test.shouldHaveEncData {
|
|
require.NotNil(t, p.EncryptedData(),
|
|
"payment should have encrypted data")
|
|
|
|
require.Equal(t, testEncData, p.EncryptedData())
|
|
} else {
|
|
require.Nil(t, p.EncryptedData())
|
|
}
|
|
|
|
if test.shouldHaveBlinding {
|
|
require.NotNil(t, p.BlindingPoint())
|
|
|
|
require.Equal(t, testPubKey, p.BlindingPoint())
|
|
} else {
|
|
require.Nil(t, p.BlindingPoint())
|
|
}
|
|
|
|
if test.shouldHaveTotalAmt {
|
|
require.NotZero(t, p.TotalAmtMsat())
|
|
} else {
|
|
require.Zero(t, p.TotalAmtMsat())
|
|
}
|
|
|
|
// Convert expected nil map to empty map, because we always expect an
|
|
// initiated map from the payload.
|
|
expCustomRecords := make(record.CustomSet)
|
|
if test.expCustomRecords != nil {
|
|
expCustomRecords = test.expCustomRecords
|
|
}
|
|
if !reflect.DeepEqual(expCustomRecords, p.CustomRecords()) {
|
|
t.Fatalf("invalid custom records")
|
|
}
|
|
}
|
|
|
|
// TestValidateBlindedRouteData tests validation of the values provided in a
|
|
// blinded route.
|
|
func TestValidateBlindedRouteData(t *testing.T) {
|
|
scid := lnwire.NewShortChanIDFromInt(1)
|
|
|
|
tests := []struct {
|
|
name string
|
|
data *record.BlindedRouteData
|
|
incomingAmount lnwire.MilliSatoshi
|
|
incomingTimelock uint32
|
|
err error
|
|
}{
|
|
{
|
|
name: "max cltv expired",
|
|
data: record.NewBlindedRouteData(
|
|
scid,
|
|
nil,
|
|
record.PaymentRelayInfo{},
|
|
&record.PaymentConstraints{
|
|
MaxCltvExpiry: 100,
|
|
},
|
|
nil,
|
|
),
|
|
incomingTimelock: 200,
|
|
err: hop.ErrInvalidPayload{
|
|
Type: record.LockTimeOnionType,
|
|
Violation: hop.InsufficientViolation,
|
|
},
|
|
},
|
|
{
|
|
name: "zero max cltv",
|
|
data: record.NewBlindedRouteData(
|
|
scid,
|
|
nil,
|
|
record.PaymentRelayInfo{},
|
|
&record.PaymentConstraints{
|
|
MaxCltvExpiry: 0,
|
|
HtlcMinimumMsat: 10,
|
|
},
|
|
nil,
|
|
),
|
|
incomingAmount: 100,
|
|
incomingTimelock: 10,
|
|
err: hop.ErrInvalidPayload{
|
|
Type: record.LockTimeOnionType,
|
|
Violation: hop.InsufficientViolation,
|
|
},
|
|
},
|
|
{
|
|
name: "amount below minimum",
|
|
data: record.NewBlindedRouteData(
|
|
scid,
|
|
nil,
|
|
record.PaymentRelayInfo{},
|
|
&record.PaymentConstraints{
|
|
HtlcMinimumMsat: 15,
|
|
},
|
|
nil,
|
|
),
|
|
incomingAmount: 10,
|
|
err: hop.ErrInvalidPayload{
|
|
Type: record.AmtOnionType,
|
|
Violation: hop.InsufficientViolation,
|
|
},
|
|
},
|
|
{
|
|
name: "valid, no features",
|
|
data: record.NewBlindedRouteData(
|
|
scid,
|
|
nil,
|
|
record.PaymentRelayInfo{},
|
|
&record.PaymentConstraints{
|
|
MaxCltvExpiry: 100,
|
|
HtlcMinimumMsat: 20,
|
|
},
|
|
nil,
|
|
),
|
|
incomingAmount: 40,
|
|
incomingTimelock: 80,
|
|
},
|
|
{
|
|
name: "unknown features",
|
|
data: record.NewBlindedRouteData(
|
|
scid,
|
|
nil,
|
|
record.PaymentRelayInfo{},
|
|
&record.PaymentConstraints{
|
|
MaxCltvExpiry: 100,
|
|
HtlcMinimumMsat: 20,
|
|
},
|
|
lnwire.NewFeatureVector(
|
|
lnwire.NewRawFeatureVector(
|
|
lnwire.FeatureBit(9999),
|
|
),
|
|
lnwire.Features,
|
|
),
|
|
),
|
|
incomingAmount: 40,
|
|
incomingTimelock: 80,
|
|
err: hop.ErrInvalidPayload{
|
|
Type: 14,
|
|
Violation: hop.IncludedViolation,
|
|
},
|
|
},
|
|
{
|
|
name: "valid data",
|
|
data: record.NewBlindedRouteData(
|
|
scid,
|
|
nil,
|
|
record.PaymentRelayInfo{
|
|
CltvExpiryDelta: 10,
|
|
FeeRate: 10,
|
|
BaseFee: 100,
|
|
},
|
|
&record.PaymentConstraints{
|
|
MaxCltvExpiry: 100,
|
|
HtlcMinimumMsat: 20,
|
|
},
|
|
nil,
|
|
),
|
|
incomingAmount: 40,
|
|
incomingTimelock: 80,
|
|
},
|
|
}
|
|
|
|
for _, testCase := range tests {
|
|
testCase := testCase
|
|
|
|
t.Run(testCase.name, func(t *testing.T) {
|
|
err := hop.ValidateBlindedRouteData(
|
|
testCase.data, testCase.incomingAmount,
|
|
testCase.incomingTimelock,
|
|
)
|
|
require.Equal(t, testCase.err, err)
|
|
})
|
|
}
|
|
}
|
|
|
|
// TestValidatePayloadWithBlinded tests validation of the contents of a
|
|
// payload when it's for a blinded payment.
|
|
func TestValidatePayloadWithBlinded(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
finalHopMap := map[tlv.Type][]byte{
|
|
record.AmtOnionType: nil,
|
|
record.LockTimeOnionType: nil,
|
|
record.TotalAmtMsatBlindedType: nil,
|
|
}
|
|
|
|
tests := []struct {
|
|
name string
|
|
isFinal bool
|
|
parsed map[tlv.Type][]byte
|
|
err bool
|
|
}{
|
|
{
|
|
name: "final hop, valid",
|
|
isFinal: true,
|
|
parsed: finalHopMap,
|
|
},
|
|
{
|
|
name: "intermediate hop, invalid",
|
|
isFinal: false,
|
|
parsed: finalHopMap,
|
|
err: true,
|
|
},
|
|
{
|
|
name: "intermediate hop, invalid",
|
|
isFinal: false,
|
|
parsed: map[tlv.Type][]byte{
|
|
record.EncryptedDataOnionType: nil,
|
|
record.BlindingPointOnionType: nil,
|
|
},
|
|
},
|
|
{
|
|
name: "unknown record, invalid",
|
|
isFinal: false,
|
|
parsed: map[tlv.Type][]byte{
|
|
tlv.Type(99): nil,
|
|
},
|
|
err: true,
|
|
},
|
|
}
|
|
|
|
for _, testCase := range tests {
|
|
t.Run(testCase.name, func(t *testing.T) {
|
|
err := hop.ValidatePayloadWithBlinded(
|
|
testCase.isFinal, testCase.parsed,
|
|
)
|
|
|
|
// We can't determine our exact error because we
|
|
// iterate through a map (non-deterministic) in the
|
|
// function.
|
|
if testCase.err {
|
|
require.NotNil(t, err)
|
|
} else {
|
|
require.Nil(t, err)
|
|
}
|
|
})
|
|
}
|
|
}
|