package paychmgr
import (
"bytes"
"context"
"testing"
"github.com/filecoin-project/lotus/api"
"github.com/filecoin-project/specs-actors/actors/builtin"
"github.com/filecoin-project/specs-actors/actors/util/adt"
"github.com/ipfs/go-cid"
"github.com/filecoin-project/lotus/lib/sigs"
"github.com/filecoin-project/specs-actors/actors/crypto"
"github.com/stretchr/testify/require"
"github.com/filecoin-project/specs-actors/actors/abi/big"
"github.com/filecoin-project/specs-actors/actors/abi"
tutils "github.com/filecoin-project/specs-actors/support/testing"
"github.com/filecoin-project/specs-actors/actors/builtin/paych"
"github.com/filecoin-project/specs-actors/actors/builtin/account"
"github.com/filecoin-project/go-address"
"github.com/filecoin-project/lotus/chain/types"
ds "github.com/ipfs/go-datastore"
ds_sync "github.com/ipfs/go-datastore/sync"
)
func TestCheckVoucherValid(t *testing.T) {
ctx := context.Background()
fromKeyPrivate, fromKeyPublic := testGenerateKeyPair(t)
toKeyPrivate, toKeyPublic := testGenerateKeyPair(t)
randKeyPrivate, _ := testGenerateKeyPair(t)
ch := tutils.NewIDAddr(t, 100)
from := tutils.NewSECP256K1Addr(t, string(fromKeyPublic))
to := tutils.NewSECP256K1Addr(t, string(toKeyPublic))
fromAcct := tutils.NewActorAddr(t, "fromAct")
toAcct := tutils.NewActorAddr(t, "toAct")
mock := newMockManagerAPI()
mock.setAccountState(fromAcct, account.State{Address: from})
mock.setAccountState(toAcct, account.State{Address: to})
tcases := []struct {
name string
expectError bool
key []byte
actorBalance big.Int
toSend big.Int
voucherAmount big.Int
voucherLane uint64
voucherNonce uint64
laneStates map[uint64]paych.LaneState
}{{
name: "passes when voucher amount < balance",
key: fromKeyPrivate,
actorBalance: big.NewInt(10),
toSend: big.NewInt(0),
voucherAmount: big.NewInt(5),
}, {
name: "fails when funds too low",
expectError: true,
key: fromKeyPrivate,
actorBalance: big.NewInt(5),
toSend: big.NewInt(0),
voucherAmount: big.NewInt(10),
}, {
name: "fails when invalid signature",
expectError: true,
key: randKeyPrivate,
actorBalance: big.NewInt(10),
toSend: big.NewInt(0),
voucherAmount: big.NewInt(5),
}, {
name: "fails when signed by channel To account (instead of From account)",
expectError: true,
key: toKeyPrivate,
actorBalance: big.NewInt(10),
toSend: big.NewInt(0),
voucherAmount: big.NewInt(5),
}, {
name: "fails when nonce too low",
expectError: true,
key: fromKeyPrivate,
actorBalance: big.NewInt(10),
toSend: big.NewInt(0),
voucherAmount: big.NewInt(5),
voucherLane: 1,
voucherNonce: 2,
laneStates: map[uint64]paych.LaneState{
1: {
Redeemed: big.NewInt(2),
Nonce: 3,
},
},
}, {
name: "passes when nonce higher",
key: fromKeyPrivate,
actorBalance: big.NewInt(10),
toSend: big.NewInt(0),
voucherAmount: big.NewInt(5),
voucherLane: 1,
voucherNonce: 3,
laneStates: map[uint64]paych.LaneState{
1: {
Redeemed: big.NewInt(2),
Nonce: 2,
},
},
}, {
name: "passes when nonce for different lane",
key: fromKeyPrivate,
actorBalance: big.NewInt(10),
toSend: big.NewInt(0),
voucherAmount: big.NewInt(5),
voucherLane: 2,
voucherNonce: 2,
laneStates: map[uint64]paych.LaneState{
1: {
Redeemed: big.NewInt(2),
Nonce: 3,
},
},
}, {
name: "fails when voucher has higher nonce but lower value than lane state",
expectError: true,
key: fromKeyPrivate,
actorBalance: big.NewInt(10),
toSend: big.NewInt(0),
voucherAmount: big.NewInt(5),
voucherLane: 1,
voucherNonce: 3,
laneStates: map[uint64]paych.LaneState{
1: {
Redeemed: big.NewInt(6),
Nonce: 2,
},
},
}, {
name: "fails when voucher + ToSend > balance",
expectError: true,
key: fromKeyPrivate,
actorBalance: big.NewInt(10),
toSend: big.NewInt(9),
voucherAmount: big.NewInt(2),
}, {
// voucher supersedes lane 1 redeemed so
// lane 1 effective redeemed = voucher amount
//
// required balance = toSend + total redeemed
// = 1 + 6 (lane1)
// = 7
// So required balance: 7 < actor balance: 10
name: "passes when voucher + total redeemed <= balance",
key: fromKeyPrivate,
actorBalance: big.NewInt(10),
toSend: big.NewInt(1),
voucherAmount: big.NewInt(6),
voucherLane: 1,
voucherNonce: 2,
laneStates: map[uint64]paych.LaneState{
// Lane 1 (same as voucher lane 1)
1: {
Redeemed: big.NewInt(4),
Nonce: 1,
},
},
}, {
// required balance = toSend + total redeemed
// = 1 + 4 (lane 2) + 6 (voucher lane 1)
// = 11
// So required balance: 11 > actor balance: 10
name: "fails when voucher + total redeemed > balance",
expectError: true,
key: fromKeyPrivate,
actorBalance: big.NewInt(10),
toSend: big.NewInt(1),
voucherAmount: big.NewInt(6),
voucherLane: 1,
voucherNonce: 1,
laneStates: map[uint64]paych.LaneState{
// Lane 2 (different from voucher lane 1)
2: {
Redeemed: big.NewInt(4),
Nonce: 1,
},
},
}}
for _, tcase := range tcases {
tcase := tcase
t.Run(tcase.name, func(t *testing.T) {
store := NewStore(ds_sync.MutexWrap(ds.NewMapDatastore()))
// Create an actor for the channel with the test case balance
act := &types.Actor{
Code: builtin.AccountActorCodeID,
Head: cid.Cid{},
Nonce: 0,
Balance: tcase.actorBalance,
}
// Set the state of the channel's lanes
laneStates, err := mock.storeLaneStates(tcase.laneStates)
require.NoError(t, err)
mock.setPaychState(ch, act, paych.State{
From: fromAcct,
To: toAcct,
ToSend: tcase.toSend,
SettlingAt: abi.ChainEpoch(0),
MinSettleHeight: abi.ChainEpoch(0),
LaneStates: laneStates,
})
// Create a manager
mgr, err := newManager(store, mock)
require.NoError(t, err)
// Add channel To address to wallet
mock.addWalletAddress(to)
// Create a signed voucher
sv := createTestVoucher(t, ch, tcase.voucherLane, tcase.voucherNonce, tcase.voucherAmount, tcase.key)
// Check the voucher's validity
err = mgr.CheckVoucherValid(ctx, ch, sv)
if tcase.expectError {
require.Error(t, err)
} else {
require.NoError(t, err)
}
})
}
}
func TestCheckVoucherValidCountingAllLanes(t *testing.T) {
ctx := context.Background()
fromKeyPrivate, fromKeyPublic := testGenerateKeyPair(t)
ch := tutils.NewIDAddr(t, 100)
from := tutils.NewSECP256K1Addr(t, string(fromKeyPublic))
to := tutils.NewSECP256K1Addr(t, "secpTo")
fromAcct := tutils.NewActorAddr(t, "fromAct")
toAcct := tutils.NewActorAddr(t, "toAct")
minDelta := big.NewInt(0)
mock := newMockManagerAPI()
mock.setAccountState(fromAcct, account.State{Address: from})
mock.setAccountState(toAcct, account.State{Address: to})
store := NewStore(ds_sync.MutexWrap(ds.NewMapDatastore()))
actorBalance := big.NewInt(10)
toSend := big.NewInt(1)
laneStates := map[uint64]paych.LaneState{
1: {
Nonce: 1,
Redeemed: big.NewInt(3),
},
2: {
Nonce: 1,
Redeemed: big.NewInt(4),
},
}
act := &types.Actor{
Code: builtin.AccountActorCodeID,
Head: cid.Cid{},
Nonce: 0,
Balance: actorBalance,
}
lsCid, err := mock.storeLaneStates(laneStates)
require.NoError(t, err)
mock.setPaychState(ch, act, paych.State{
From: fromAcct,
To: toAcct,
ToSend: toSend,
SettlingAt: abi.ChainEpoch(0),
MinSettleHeight: abi.ChainEpoch(0),
LaneStates: lsCid,
})
mgr, err := newManager(store, mock)
require.NoError(t, err)
// Add channel To address to wallet
mock.addWalletAddress(to)
//
// Should not be possible to add a voucher with a value such that
// <total lane Redeemed> + toSend > <actor balance>
//
// lane 1 redeemed: 3
// voucher amount (lane 1): 6
// lane 1 redeemed (with voucher): 6
//
// Lane 1: 6
// Lane 2: 4
// toSend: 1
// --
// total: 11
//
// actor balance is 10 so total is too high.
//
voucherLane := uint64(1)
voucherNonce := uint64(2)
voucherAmount := big.NewInt(6)
sv := createTestVoucher(t, ch, voucherLane, voucherNonce, voucherAmount, fromKeyPrivate)
err = mgr.CheckVoucherValid(ctx, ch, sv)
require.Error(t, err)
//
// lane 1 redeemed: 3
// voucher amount (lane 1): 4
// lane 1 redeemed (with voucher): 4
//
// Lane 1: 4
// Lane 2: 4
// toSend: 1
// --
// total: 9
//
// actor balance is 10 so total is ok.
//
voucherAmount = big.NewInt(4)
sv = createTestVoucher(t, ch, voucherLane, voucherNonce, voucherAmount, fromKeyPrivate)
err = mgr.CheckVoucherValid(ctx, ch, sv)
require.NoError(t, err)
// Add voucher to lane 1, so Lane 1 effective redeemed
// (with first voucher) is now 4
_, err = mgr.AddVoucherOutbound(ctx, ch, sv, nil, minDelta)
require.NoError(t, err)
//
// lane 1 redeemed: 4
// voucher amount (lane 1): 6
// lane 1 redeemed (with voucher): 6
//
// Lane 1: 6
// Lane 2: 4
// toSend: 1
// --
// total: 11
//
// actor balance is 10 so total is too high.
//
voucherNonce++
voucherAmount = big.NewInt(6)
sv = createTestVoucher(t, ch, voucherLane, voucherNonce, voucherAmount, fromKeyPrivate)
err = mgr.CheckVoucherValid(ctx, ch, sv)
require.Error(t, err)
//
// lane 1 redeemed: 4
// voucher amount (lane 1): 5
// lane 1 redeemed (with voucher): 5
//
// Lane 1: 5
// Lane 2: 4
// toSend: 1
// --
// total: 10
//
// actor balance is 10 so total is ok.
//
voucherAmount = big.NewInt(5)
sv = createTestVoucher(t, ch, voucherLane, voucherNonce, voucherAmount, fromKeyPrivate)
err = mgr.CheckVoucherValid(ctx, ch, sv)
require.NoError(t, err)
}
func TestCreateVoucher(t *testing.T) {
ctx := context.Background()
// Set up a manager with a single payment channel
s := testSetupMgrWithChannel(ctx, t)
// Create a voucher in lane 1
voucherLane1Amt := big.NewInt(5)
voucher := paych.SignedVoucher{
Lane: 1,
Amount: voucherLane1Amt,
}
res, err := s.mgr.CreateVoucher(ctx, s.ch, voucher)
require.NoError(t, err)
require.NotNil(t, res.Voucher)
require.Equal(t, s.ch, res.Voucher.ChannelAddr)
require.Equal(t, voucherLane1Amt, res.Voucher.Amount)
require.EqualValues(t, 0, res.Shortfall.Int64())
nonce := res.Voucher.Nonce
// Create a voucher in lane 1 again, with a higher amount
voucherLane1Amt = big.NewInt(8)
voucher = paych.SignedVoucher{
Lane: 1,
Amount: voucherLane1Amt,
}
res, err = s.mgr.CreateVoucher(ctx, s.ch, voucher)
require.NoError(t, err)
require.NotNil(t, res.Voucher)
require.Equal(t, s.ch, res.Voucher.ChannelAddr)
require.Equal(t, voucherLane1Amt, res.Voucher.Amount)
require.EqualValues(t, 0, res.Shortfall.Int64())
require.Equal(t, nonce+1, res.Voucher.Nonce)
// Create a voucher in lane 2 that covers all the remaining funds
// in the channel
voucherLane2Amt := big.Sub(s.amt, voucherLane1Amt)
voucher = paych.SignedVoucher{
Lane: 2,
Amount: voucherLane2Amt,
}
res, err = s.mgr.CreateVoucher(ctx, s.ch, voucher)
require.NoError(t, err)
require.NotNil(t, res.Voucher)
require.Equal(t, s.ch, res.Voucher.ChannelAddr)
require.Equal(t, voucherLane2Amt, res.Voucher.Amount)
require.EqualValues(t, 0, res.Shortfall.Int64())
// Create a voucher in lane 2 that exceeds the remaining funds in the
// channel
voucherLane2Amt = big.Add(voucherLane2Amt, big.NewInt(1))
voucher = paych.SignedVoucher{
Lane: 2,
Amount: voucherLane2Amt,
}
res, err = s.mgr.CreateVoucher(ctx, s.ch, voucher)
require.NoError(t, err)
// Expect a shortfall value equal to the amount required to add the voucher
// to the channel
require.Nil(t, res.Voucher)
require.EqualValues(t, 1, res.Shortfall.Int64())
}
func TestAddVoucherDelta(t *testing.T) {
ctx := context.Background()
// Set up a manager with a single payment channel
s := testSetupMgrWithChannel(ctx, t)
voucherLane := uint64(1)
// Expect error when adding a voucher whose amount is less than minDelta
minDelta := big.NewInt(2)
nonce := uint64(1)
voucherAmount := big.NewInt(1)
sv := createTestVoucher(t, s.ch, voucherLane, nonce, voucherAmount, s.fromKeyPrivate)
_, err := s.mgr.AddVoucherOutbound(ctx, s.ch, sv, nil, minDelta)
require.Error(t, err)
// Expect success when adding a voucher whose amount is equal to minDelta
nonce++
voucherAmount = big.NewInt(2)
sv = createTestVoucher(t, s.ch, voucherLane, nonce, voucherAmount, s.fromKeyPrivate)
delta, err := s.mgr.AddVoucherOutbound(ctx, s.ch, sv, nil, minDelta)
require.NoError(t, err)
require.EqualValues(t, delta.Int64(), 2)
// Check that delta is correct when there's an existing voucher
nonce++
voucherAmount = big.NewInt(5)
sv = createTestVoucher(t, s.ch, voucherLane, nonce, voucherAmount, s.fromKeyPrivate)
delta, err = s.mgr.AddVoucherOutbound(ctx, s.ch, sv, nil, minDelta)
require.NoError(t, err)
require.EqualValues(t, delta.Int64(), 3)
// Check that delta is correct when voucher added to a different lane
nonce = uint64(1)
voucherAmount = big.NewInt(6)
voucherLane = uint64(2)
sv = createTestVoucher(t, s.ch, voucherLane, nonce, voucherAmount, s.fromKeyPrivate)
delta, err = s.mgr.AddVoucherOutbound(ctx, s.ch, sv, nil, minDelta)
require.NoError(t, err)
require.EqualValues(t, delta.Int64(), 6)
}
func TestAddVoucherNextLane(t *testing.T) {
ctx := context.Background()
// Set up a manager with a single payment channel
s := testSetupMgrWithChannel(ctx, t)
minDelta := big.NewInt(0)
voucherAmount := big.NewInt(2)
// Add a voucher in lane 2
nonce := uint64(1)
voucherLane := uint64(2)
sv := createTestVoucher(t, s.ch, voucherLane, nonce, voucherAmount, s.fromKeyPrivate)
_, err := s.mgr.AddVoucherOutbound(ctx, s.ch, sv, nil, minDelta)
require.NoError(t, err)
ci, err := s.mgr.GetChannelInfo(s.ch)
require.NoError(t, err)
require.EqualValues(t, ci.NextLane, 3)
// Allocate a lane (should be lane 3)
lane, err := s.mgr.AllocateLane(s.ch)
require.NoError(t, err)
require.EqualValues(t, lane, 3)
ci, err = s.mgr.GetChannelInfo(s.ch)
require.NoError(t, err)
require.EqualValues(t, ci.NextLane, 4)
// Add a voucher in lane 1
voucherLane = uint64(1)
sv = createTestVoucher(t, s.ch, voucherLane, nonce, voucherAmount, s.fromKeyPrivate)
_, err = s.mgr.AddVoucherOutbound(ctx, s.ch, sv, nil, minDelta)
require.NoError(t, err)
ci, err = s.mgr.GetChannelInfo(s.ch)
require.NoError(t, err)
require.EqualValues(t, ci.NextLane, 4)
// Add a voucher in lane 7
voucherLane = uint64(7)
sv = createTestVoucher(t, s.ch, voucherLane, nonce, voucherAmount, s.fromKeyPrivate)
_, err = s.mgr.AddVoucherOutbound(ctx, s.ch, sv, nil, minDelta)
require.NoError(t, err)
ci, err = s.mgr.GetChannelInfo(s.ch)
require.NoError(t, err)
require.EqualValues(t, ci.NextLane, 8)
}
func TestAllocateLane(t *testing.T) {
ctx := context.Background()
// Set up a manager with a single payment channel
s := testSetupMgrWithChannel(ctx, t)
// First lane should be 0
lane, err := s.mgr.AllocateLane(s.ch)
require.NoError(t, err)
require.EqualValues(t, lane, 0)
// Next lane should be 1
lane, err = s.mgr.AllocateLane(s.ch)
require.NoError(t, err)
require.EqualValues(t, lane, 1)
}
func TestAllocateLaneWithExistingLaneState(t *testing.T) {
ctx := context.Background()
fromKeyPrivate, fromKeyPublic := testGenerateKeyPair(t)
ch := tutils.NewIDAddr(t, 100)
from := tutils.NewSECP256K1Addr(t, string(fromKeyPublic))
to := tutils.NewSECP256K1Addr(t, "secpTo")
fromAcct := tutils.NewActorAddr(t, "fromAct")
toAcct := tutils.NewActorAddr(t, "toAct")
mock := newMockManagerAPI()
mock.setAccountState(fromAcct, account.State{Address: from})
mock.setAccountState(toAcct, account.State{Address: to})
mock.addWalletAddress(to)
store := NewStore(ds_sync.MutexWrap(ds.NewMapDatastore()))
// Create a channel that will be retrieved from state
actorBalance := big.NewInt(10)
toSend := big.NewInt(1)
act := &types.Actor{
Code: builtin.AccountActorCodeID,
Head: cid.Cid{},
Nonce: 0,
Balance: actorBalance,
}
arr, err := adt.MakeEmptyArray(mock.store).Root()
require.NoError(t, err)
mock.setPaychState(ch, act, paych.State{
From: fromAcct,
To: toAcct,
ToSend: toSend,
SettlingAt: abi.ChainEpoch(0),
MinSettleHeight: abi.ChainEpoch(0),
LaneStates: arr,
})
mgr, err := newManager(store, mock)
require.NoError(t, err)
// Create a voucher on lane 2
// (also reads the channel from state and puts it in the store)
voucherLane := uint64(2)
minDelta := big.NewInt(0)
nonce := uint64(2)
voucherAmount := big.NewInt(5)
sv := createTestVoucher(t, ch, voucherLane, nonce, voucherAmount, fromKeyPrivate)
_, err = mgr.AddVoucherInbound(ctx, ch, sv, nil, minDelta)
require.NoError(t, err)
// Allocate lane should return the next lane (lane 3)
lane, err := mgr.AllocateLane(ch)
require.NoError(t, err)
require.EqualValues(t, 3, lane)
}
func TestAddVoucherProof(t *testing.T) {
ctx := context.Background()
// Set up a manager with a single payment channel
s := testSetupMgrWithChannel(ctx, t)
nonce := uint64(1)
voucherAmount := big.NewInt(1)
minDelta := big.NewInt(0)
voucherAmount = big.NewInt(2)
voucherLane := uint64(1)
// Add a voucher with no proof
var proof []byte
sv := createTestVoucher(t, s.ch, voucherLane, nonce, voucherAmount, s.fromKeyPrivate)
_, err := s.mgr.AddVoucherOutbound(ctx, s.ch, sv, nil, minDelta)
require.NoError(t, err)
// Expect one voucher with no proof
ci, err := s.mgr.GetChannelInfo(s.ch)
require.NoError(t, err)
require.Len(t, ci.Vouchers, 1)
require.Len(t, ci.Vouchers[0].Proof, 0)
// Add same voucher with no proof
voucherLane = uint64(1)
_, err = s.mgr.AddVoucherOutbound(ctx, s.ch, sv, proof, minDelta)
require.NoError(t, err)
// Expect one voucher with no proof
ci, err = s.mgr.GetChannelInfo(s.ch)
require.NoError(t, err)
require.Len(t, ci.Vouchers, 1)
require.Len(t, ci.Vouchers[0].Proof, 0)
// Add same voucher with proof
proof = []byte{1}
_, err = s.mgr.AddVoucherOutbound(ctx, s.ch, sv, proof, minDelta)
require.NoError(t, err)
// Should add proof to existing voucher
ci, err = s.mgr.GetChannelInfo(s.ch)
require.NoError(t, err)
require.Len(t, ci.Vouchers, 1)
require.Len(t, ci.Vouchers[0].Proof, 1)
}
func TestAddVoucherInboundWalletKey(t *testing.T) {
ctx := context.Background()
fromKeyPrivate, fromKeyPublic := testGenerateKeyPair(t)
ch := tutils.NewIDAddr(t, 100)
from := tutils.NewSECP256K1Addr(t, string(fromKeyPublic))
to := tutils.NewSECP256K1Addr(t, "secpTo")
fromAcct := tutils.NewActorAddr(t, "fromAct")
toAcct := tutils.NewActorAddr(t, "toAct")
// Create an actor for the channel in state
act := &types.Actor{
Code: builtin.AccountActorCodeID,
Head: cid.Cid{},
Nonce: 0,
Balance: types.NewInt(20),
}
mock := newMockManagerAPI()
arr, err := adt.MakeEmptyArray(mock.store).Root()
require.NoError(t, err)
mock.setAccountState(fromAcct, account.State{Address: from})
mock.setAccountState(toAcct, account.State{Address: to})
mock.setPaychState(ch, act, paych.State{
From: fromAcct,
To: toAcct,
ToSend: types.NewInt(0),
SettlingAt: abi.ChainEpoch(0),
MinSettleHeight: abi.ChainEpoch(0),
LaneStates: arr,
})
// Create a manager
store := NewStore(ds_sync.MutexWrap(ds.NewMapDatastore()))
mgr, err := newManager(store, mock)
require.NoError(t, err)
// Add a voucher
nonce := uint64(1)
voucherLane := uint64(1)
minDelta := big.NewInt(0)
voucherAmount := big.NewInt(2)
sv := createTestVoucher(t, ch, voucherLane, nonce, voucherAmount, fromKeyPrivate)
_, err = mgr.AddVoucherInbound(ctx, ch, sv, nil, minDelta)
// Should fail because there is no wallet key matching the channel To
// address (ie, the channel is not "owned" by this node)
require.Error(t, err)
// Add wallet key for To address
mock.addWalletAddress(to)
// Add voucher again
sv = createTestVoucher(t, ch, voucherLane, nonce, voucherAmount, fromKeyPrivate)
_, err = mgr.AddVoucherInbound(ctx, ch, sv, nil, minDelta)
// Should now pass because there is a wallet key matching the channel To
// address
require.NoError(t, err)
}
func TestBestSpendable(t *testing.T) {
ctx := context.Background()
// Set up a manager with a single payment channel
s := testSetupMgrWithChannel(ctx, t)
// Add vouchers to lane 1 with amounts: [1, 2, 3]
voucherLane := uint64(1)
minDelta := big.NewInt(0)
nonce := uint64(1)
voucherAmount := big.NewInt(1)
svL1V1 := createTestVoucher(t, s.ch, voucherLane, nonce, voucherAmount, s.fromKeyPrivate)
_, err := s.mgr.AddVoucherInbound(ctx, s.ch, svL1V1, nil, minDelta)
require.NoError(t, err)
nonce++
voucherAmount = big.NewInt(2)
svL1V2 := createTestVoucher(t, s.ch, voucherLane, nonce, voucherAmount, s.fromKeyPrivate)
_, err = s.mgr.AddVoucherInbound(ctx, s.ch, svL1V2, nil, minDelta)
require.NoError(t, err)
nonce++
voucherAmount = big.NewInt(3)
svL1V3 := createTestVoucher(t, s.ch, voucherLane, nonce, voucherAmount, s.fromKeyPrivate)
_, err = s.mgr.AddVoucherInbound(ctx, s.ch, svL1V3, nil, minDelta)
require.NoError(t, err)
// Add voucher to lane 2 with amounts: [2]
voucherLane = uint64(2)
nonce = uint64(1)
voucherAmount = big.NewInt(2)
svL2V1 := createTestVoucher(t, s.ch, voucherLane, nonce, voucherAmount, s.fromKeyPrivate)
_, err = s.mgr.AddVoucherInbound(ctx, s.ch, svL2V1, nil, minDelta)
require.NoError(t, err)
// Return success exit code from calls to check if voucher is spendable
bsapi := newMockBestSpendableAPI(s.mgr)
s.mock.setCallResponse(&api.InvocResult{
MsgRct: &types.MessageReceipt{
ExitCode: 0,
},
})
// Verify best spendable vouchers on each lane
vouchers, err := BestSpendableByLane(ctx, bsapi, s.ch)
require.NoError(t, err)
require.Len(t, vouchers, 2)
vchr, ok := vouchers[1]
require.True(t, ok)
require.EqualValues(t, 3, vchr.Amount.Int64())
vchr, ok = vouchers[2]
require.True(t, ok)
require.EqualValues(t, 2, vchr.Amount.Int64())
// Submit voucher from lane 2
_, err = s.mgr.SubmitVoucher(ctx, s.ch, svL2V1, nil, nil)
require.NoError(t, err)
// Best spendable voucher should no longer include lane 2
// (because voucher has not been submitted)
vouchers, err = BestSpendableByLane(ctx, bsapi, s.ch)
require.NoError(t, err)
require.Len(t, vouchers, 1)
// Submit first voucher from lane 1
_, err = s.mgr.SubmitVoucher(ctx, s.ch, svL1V1, nil, nil)
require.NoError(t, err)
// Best spendable voucher for lane 1 should still be highest value voucher
vouchers, err = BestSpendableByLane(ctx, bsapi, s.ch)
require.NoError(t, err)
require.Len(t, vouchers, 1)
vchr, ok = vouchers[1]
require.True(t, ok)
require.EqualValues(t, 3, vchr.Amount.Int64())
}
func TestCheckSpendable(t *testing.T) {
ctx := context.Background()
// Set up a manager with a single payment channel
s := testSetupMgrWithChannel(ctx, t)
// Create voucher with Extra
voucherLane := uint64(1)
nonce := uint64(1)
voucherAmount := big.NewInt(1)
voucher := createTestVoucherWithExtra(t, s.ch, voucherLane, nonce, voucherAmount, s.fromKeyPrivate)
// Add voucher with proof
minDelta := big.NewInt(0)
proof := []byte("proof")
_, err := s.mgr.AddVoucherInbound(ctx, s.ch, voucher, proof, minDelta)
require.NoError(t, err)
// Return success exit code from VM call, which indicates that voucher is
// spendable
successResponse := &api.InvocResult{
MsgRct: &types.MessageReceipt{
ExitCode: 0,
},
}
s.mock.setCallResponse(successResponse)
// Check that spendable is true
secret := []byte("secret")
otherProof := []byte("other proof")
spendable, err := s.mgr.CheckVoucherSpendable(ctx, s.ch, voucher, secret, otherProof)
require.NoError(t, err)
require.True(t, spendable)
// Check that the secret and proof were passed through correctly
lastCall := s.mock.getLastCall()
var p paych.UpdateChannelStateParams
err = p.UnmarshalCBOR(bytes.NewReader(lastCall.Params))
require.NoError(t, err)
require.Equal(t, otherProof, p.Proof)
require.Equal(t, secret, p.Secret)
// Check that if no proof is supplied, the proof supplied to add voucher
// above is used
secret2 := []byte("secret2")
spendable, err = s.mgr.CheckVoucherSpendable(ctx, s.ch, voucher, secret2, nil)
require.NoError(t, err)
require.True(t, spendable)
lastCall = s.mock.getLastCall()
var p2 paych.UpdateChannelStateParams
err = p2.UnmarshalCBOR(bytes.NewReader(lastCall.Params))
require.NoError(t, err)
require.Equal(t, proof, p2.Proof)
require.Equal(t, secret2, p2.Secret)
// Check that if VM call returns non-success exit code, spendable is false
s.mock.setCallResponse(&api.InvocResult{
MsgRct: &types.MessageReceipt{
ExitCode: 1,
},
})
spendable, err = s.mgr.CheckVoucherSpendable(ctx, s.ch, voucher, secret, nil)
require.NoError(t, err)
require.False(t, spendable)
// Return success exit code (indicating voucher is spendable)
s.mock.setCallResponse(successResponse)
spendable, err = s.mgr.CheckVoucherSpendable(ctx, s.ch, voucher, secret, nil)
require.NoError(t, err)
require.True(t, spendable)
// Check that voucher is no longer spendable once it has been submitted
_, err = s.mgr.SubmitVoucher(ctx, s.ch, voucher, nil, nil)
require.NoError(t, err)
spendable, err = s.mgr.CheckVoucherSpendable(ctx, s.ch, voucher, secret, nil)
require.NoError(t, err)
require.False(t, spendable)
}
func TestSubmitVoucher(t *testing.T) {
ctx := context.Background()
// Set up a manager with a single payment channel
s := testSetupMgrWithChannel(ctx, t)
// Create voucher with Extra
voucherLane := uint64(1)
nonce := uint64(1)
voucherAmount := big.NewInt(1)
voucher := createTestVoucherWithExtra(t, s.ch, voucherLane, nonce, voucherAmount, s.fromKeyPrivate)
// Add voucher with proof
minDelta := big.NewInt(0)
addVoucherProof := []byte("proof")
_, err := s.mgr.AddVoucherInbound(ctx, s.ch, voucher, addVoucherProof, minDelta)
require.NoError(t, err)
// Submit voucher
secret := []byte("secret")
submitProof := []byte("submit proof")
submitCid, err := s.mgr.SubmitVoucher(ctx, s.ch, voucher, secret, submitProof)
require.NoError(t, err)
// Check that the secret and proof were passed through correctly
msg := s.mock.pushedMessages(submitCid)
var p paych.UpdateChannelStateParams
err = p.UnmarshalCBOR(bytes.NewReader(msg.Message.Params))
require.NoError(t, err)
require.Equal(t, submitProof, p.Proof)
require.Equal(t, secret, p.Secret)
// Check that if no proof is supplied to submit voucher, the proof supplied
// to add voucher is used
nonce++
voucherAmount = big.NewInt(2)
addVoucherProof2 := []byte("proof2")
secret2 := []byte("secret2")
voucher = createTestVoucherWithExtra(t, s.ch, voucherLane, nonce, voucherAmount, s.fromKeyPrivate)
_, err = s.mgr.AddVoucherInbound(ctx, s.ch, voucher, addVoucherProof2, minDelta)
require.NoError(t, err)
submitCid, err = s.mgr.SubmitVoucher(ctx, s.ch, voucher, secret2, nil)
require.NoError(t, err)
msg = s.mock.pushedMessages(submitCid)
var p2 paych.UpdateChannelStateParams
err = p2.UnmarshalCBOR(bytes.NewReader(msg.Message.Params))
require.NoError(t, err)
require.Equal(t, addVoucherProof2, p2.Proof)
require.Equal(t, secret2, p2.Secret)
// Submit a voucher without first adding it
nonce++
voucherAmount = big.NewInt(3)
secret3 := []byte("secret2")
proof3 := []byte("proof3")
voucher = createTestVoucherWithExtra(t, s.ch, voucherLane, nonce, voucherAmount, s.fromKeyPrivate)
submitCid, err = s.mgr.SubmitVoucher(ctx, s.ch, voucher, secret3, proof3)
require.NoError(t, err)
msg = s.mock.pushedMessages(submitCid)
var p3 paych.UpdateChannelStateParams
err = p3.UnmarshalCBOR(bytes.NewReader(msg.Message.Params))
require.NoError(t, err)
require.Equal(t, proof3, p3.Proof)
require.Equal(t, secret3, p3.Secret)
// Verify that vouchers are marked as submitted
vis, err := s.mgr.ListVouchers(ctx, s.ch)
require.NoError(t, err)
require.Len(t, vis, 3)
for _, vi := range vis {
require.True(t, vi.Submitted)
}
// Attempting to submit the same voucher again should fail
_, err = s.mgr.SubmitVoucher(ctx, s.ch, voucher, secret2, nil)
require.Error(t, err)
}
type testScaffold struct {
mgr *Manager
mock *mockManagerAPI
ch address.Address
amt big.Int
fromAcct address.Address
fromKeyPrivate []byte
}
func testSetupMgrWithChannel(ctx context.Context, t *testing.T) *testScaffold {
fromKeyPrivate, fromKeyPublic := testGenerateKeyPair(t)
ch := tutils.NewIDAddr(t, 100)
from := tutils.NewSECP256K1Addr(t, string(fromKeyPublic))
to := tutils.NewSECP256K1Addr(t, "secpTo")
fromAcct := tutils.NewActorAddr(t, "fromAct")
toAcct := tutils.NewActorAddr(t, "toAct")
mock := newMockManagerAPI()
arr, err := adt.MakeEmptyArray(mock.store).Root()
require.NoError(t, err)
mock.setAccountState(fromAcct, account.State{Address: from})
mock.setAccountState(toAcct, account.State{Address: to})
// Create channel in state
balance := big.NewInt(20)
act := &types.Actor{
Code: builtin.AccountActorCodeID,
Head: cid.Cid{},
Nonce: 0,
Balance: balance,
}
mock.setPaychState(ch, act, paych.State{
From: fromAcct,
To: toAcct,
ToSend: big.NewInt(0),
SettlingAt: abi.ChainEpoch(0),
MinSettleHeight: abi.ChainEpoch(0),
LaneStates: arr,
})
store := NewStore(ds_sync.MutexWrap(ds.NewMapDatastore()))
mgr, err := newManager(store, mock)
require.NoError(t, err)
// Create the channel in the manager's store
ci := &ChannelInfo{
Channel: &ch,
Control: fromAcct,
Target: toAcct,
Direction: DirOutbound,
}
err = mgr.store.putChannelInfo(ci)
require.NoError(t, err)
// Add the from signing key to the wallet
mock.addSigningKey(fromKeyPrivate)
return &testScaffold{
mgr: mgr,
mock: mock,
ch: ch,
amt: balance,
fromAcct: fromAcct,
fromKeyPrivate: fromKeyPrivate,
}
}
func testGenerateKeyPair(t *testing.T) ([]byte, []byte) {
priv, err := sigs.Generate(crypto.SigTypeSecp256k1)
require.NoError(t, err)
pub, err := sigs.ToPublic(crypto.SigTypeSecp256k1, priv)
require.NoError(t, err)
return priv, pub
}
func createTestVoucher(t *testing.T, ch address.Address, voucherLane uint64, nonce uint64, voucherAmount big.Int, key []byte) *paych.SignedVoucher {
sv := &paych.SignedVoucher{
ChannelAddr: ch,
Lane: voucherLane,
Nonce: nonce,
Amount: voucherAmount,
}
signingBytes, err := sv.SigningBytes()
require.NoError(t, err)
sig, err := sigs.Sign(crypto.SigTypeSecp256k1, key, signingBytes)
require.NoError(t, err)
sv.Signature = sig
return sv
}
func createTestVoucherWithExtra(t *testing.T, ch address.Address, voucherLane uint64, nonce uint64, voucherAmount big.Int, key []byte) *paych.SignedVoucher {
sv := &paych.SignedVoucher{
ChannelAddr: ch,
Lane: voucherLane,
Nonce: nonce,
Amount: voucherAmount,
Extra: &paych.ModVerifyParams{
Actor: tutils.NewActorAddr(t, "act"),
},
}
signingBytes, err := sv.SigningBytes()
require.NoError(t, err)
sig, err := sigs.Sign(crypto.SigTypeSecp256k1, key, signingBytes)
require.NoError(t, err)
sv.Signature = sig
return sv
}
type mockBestSpendableAPI struct {
mgr *Manager
}
func (m *mockBestSpendableAPI) PaychVoucherList(ctx context.Context, ch address.Address) ([]*paych.SignedVoucher, error) {
vi, err := m.mgr.ListVouchers(ctx, ch)
if err != nil {
return nil, err
}
out := make([]*paych.SignedVoucher, len(vi))
for k, v := range vi {
out[k] = v.Voucher
}
return out, nil
}
func (m *mockBestSpendableAPI) PaychVoucherCheckSpendable(ctx context.Context, ch address.Address, voucher *paych.SignedVoucher, secret []byte, proof []byte) (bool, error) {
return m.mgr.CheckVoucherSpendable(ctx, ch, voucher, secret, proof)
}
func newMockBestSpendableAPI(mgr *Manager) BestSpendableAPI {
return &mockBestSpendableAPI{mgr: mgr}
}