status-go/waku/filter_test.go

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2019-12-20 09:40:50 +00:00
// Copyright 2019 The Waku Library Authors.
//
// The Waku library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The Waku library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty off
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the Waku library. If not, see <http://www.gnu.org/licenses/>.
//
// This software uses the go-ethereum library, which is licensed
// under the GNU Lesser General Public Library, version 3 or any later.
package waku
import (
"math/big"
mrand "math/rand"
"testing"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
)
var seed int64
// InitSingleTest should be called in the beginning of every
// test, which uses RNG, in order to make the tests
// reproduciblity independent of their sequence.
func InitSingleTest() {
seed = time.Now().Unix()
mrand.Seed(seed)
}
func InitDebugTest(i int64) {
seed = i
mrand.Seed(seed)
}
type FilterTestCase struct {
f *Filter
id string
alive bool
msgCnt int
}
func generateFilter(t *testing.T, symmetric bool) (*Filter, error) {
var f Filter
f.Messages = NewMemoryMessageStore()
const topicNum = 8
f.Topics = make([][]byte, topicNum)
for i := 0; i < topicNum; i++ {
f.Topics[i] = make([]byte, 4)
mrand.Read(f.Topics[i])
f.Topics[i][0] = 0x01
}
key, err := crypto.GenerateKey()
if err != nil {
t.Fatalf("generateFilter 1 failed with seed %d.", seed)
return nil, err
}
f.Src = &key.PublicKey
if symmetric {
f.KeySym = make([]byte, aesKeyLength)
mrand.Read(f.KeySym)
f.SymKeyHash = crypto.Keccak256Hash(f.KeySym)
} else {
f.KeyAsym, err = crypto.GenerateKey()
if err != nil {
t.Fatalf("generateFilter 2 failed with seed %d.", seed)
return nil, err
}
}
// AcceptP2P & PoW are not set
return &f, nil
}
func generateTestCases(t *testing.T, SizeTestFilters int) []FilterTestCase {
cases := make([]FilterTestCase, SizeTestFilters)
for i := 0; i < SizeTestFilters; i++ {
f, _ := generateFilter(t, true)
cases[i].f = f
cases[i].alive = mrand.Int()&int(1) == 0
}
return cases
}
func TestInstallFilters(t *testing.T) {
InitSingleTest()
const SizeTestFilters = 256
w := New(&Config{}, nil)
filters := NewFilters(w)
tst := generateTestCases(t, SizeTestFilters)
var err error
var j string
for i := 0; i < SizeTestFilters; i++ {
j, err = filters.Install(tst[i].f)
if err != nil {
t.Fatalf("seed %d: failed to install filter: %s", seed, err)
}
tst[i].id = j
if len(j) != keyIDSize*2 {
t.Fatalf("seed %d: wrong filter id size [%d]", seed, len(j))
}
}
for _, testCase := range tst {
if !testCase.alive {
filters.Uninstall(testCase.id)
}
}
for i, testCase := range tst {
fil := filters.Get(testCase.id)
exist := fil != nil
if exist != testCase.alive {
t.Fatalf("seed %d: failed alive: %d, %v, %v", seed, i, exist, testCase.alive)
}
if exist && fil.PoW != testCase.f.PoW {
t.Fatalf("seed %d: failed Get: %d, %v, %v", seed, i, exist, testCase.alive)
}
}
}
func TestInstallSymKeyGeneratesHash(t *testing.T) {
InitSingleTest()
w := New(&Config{}, nil)
filters := NewFilters(w)
filter, _ := generateFilter(t, true)
// save the current SymKeyHash for comparison
initialSymKeyHash := filter.SymKeyHash
// ensure the SymKeyHash is invalid, for Install to recreate it
var invalid common.Hash
filter.SymKeyHash = invalid
_, err := filters.Install(filter)
if err != nil {
t.Fatalf("Error installing the filter: %s", err)
}
for i, b := range filter.SymKeyHash {
if b != initialSymKeyHash[i] {
t.Fatalf("The filter's symmetric key hash was not properly generated by Install")
}
}
}
func TestInstallIdenticalFilters(t *testing.T) {
InitSingleTest()
w := New(&Config{}, nil)
filters := NewFilters(w)
filter1, _ := generateFilter(t, true)
// Copy the first filter since some of its fields
// are randomly gnerated.
filter2 := &Filter{
KeySym: filter1.KeySym,
Topics: filter1.Topics,
PoW: filter1.PoW,
AllowP2P: filter1.AllowP2P,
Messages: NewMemoryMessageStore(),
}
_, err := filters.Install(filter1)
if err != nil {
t.Fatalf("Error installing the first filter with seed %d: %s", seed, err)
}
_, err = filters.Install(filter2)
if err != nil {
t.Fatalf("Error installing the second filter with seed %d: %s", seed, err)
}
params, err := generateMessageParams()
if err != nil {
t.Fatalf("Error generating message parameters with seed %d: %s", seed, err)
}
params.KeySym = filter1.KeySym
params.Topic = BytesToTopic(filter1.Topics[0])
filter1.Src = &params.Src.PublicKey
filter2.Src = &params.Src.PublicKey
sentMessage, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := sentMessage.Wrap(params, time.Now())
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
msg := env.Open(filter1)
if msg == nil {
t.Fatalf("failed to Open with filter1")
}
if !filter1.MatchEnvelope(env) {
t.Fatalf("failed matching with the first filter")
}
if !filter2.MatchEnvelope(env) {
t.Fatalf("failed matching with the first filter")
}
if !filter1.MatchMessage(msg) {
t.Fatalf("failed matching with the second filter")
}
if !filter2.MatchMessage(msg) {
t.Fatalf("failed matching with the second filter")
}
}
func TestInstallFilterWithSymAndAsymKeys(t *testing.T) {
InitSingleTest()
w := New(&Config{}, nil)
filters := NewFilters(w)
filter1, _ := generateFilter(t, true)
asymKey, err := crypto.GenerateKey()
if err != nil {
t.Fatalf("Unable to create asymetric keys: %v", err)
}
// Copy the first filter since some of its fields
// are randomly gnerated.
filter := &Filter{
KeySym: filter1.KeySym,
KeyAsym: asymKey,
Topics: filter1.Topics,
PoW: filter1.PoW,
AllowP2P: filter1.AllowP2P,
Messages: NewMemoryMessageStore(),
}
_, err = filters.Install(filter)
if err == nil {
t.Fatalf("Error detecting that a filter had both an asymmetric and symmetric key, with seed %d", seed)
}
}
func TestComparePubKey(t *testing.T) {
InitSingleTest()
key1, err := crypto.GenerateKey()
if err != nil {
t.Fatalf("failed to generate first key with seed %d: %s.", seed, err)
}
key2, err := crypto.GenerateKey()
if err != nil {
t.Fatalf("failed to generate second key with seed %d: %s.", seed, err)
}
if IsPubKeyEqual(&key1.PublicKey, &key2.PublicKey) {
t.Fatalf("public keys are equal, seed %d.", seed)
}
// generate key3 == key1
mrand.Seed(seed)
key3, err := crypto.GenerateKey()
if err != nil {
t.Fatalf("failed to generate third key with seed %d: %s.", seed, err)
}
if IsPubKeyEqual(&key1.PublicKey, &key3.PublicKey) {
t.Fatalf("key1 == key3, seed %d.", seed)
}
}
func TestMatchEnvelope(t *testing.T) {
InitSingleTest()
fsym, err := generateFilter(t, true)
if err != nil {
t.Fatalf("failed generateFilter with seed %d: %s.", seed, err)
}
fasym, err := generateFilter(t, false)
if err != nil {
t.Fatalf("failed generateFilter() with seed %d: %s.", seed, err)
}
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
params.Topic[0] = 0xFF // topic mismatch
msg, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := msg.Wrap(params, time.Now())
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
// encrypt symmetrically
i := mrand.Int() % 4
fsym.Topics[i] = params.Topic[:]
fasym.Topics[i] = params.Topic[:]
msg, err = NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err = msg.Wrap(params, time.Now())
if err != nil {
t.Fatalf("failed Wrap() with seed %d: %s.", seed, err)
}
// symmetric + matching topic: match
match := fsym.MatchEnvelope(env)
if !match {
t.Fatalf("failed MatchEnvelope() symmetric with seed %d.", seed)
}
// symmetric + matching topic + insufficient PoW: mismatch
fsym.PoW = env.PoW() + 1.0
match = fsym.MatchEnvelope(env)
if match {
t.Fatalf("failed MatchEnvelope(symmetric + matching topic + insufficient PoW) asymmetric with seed %d.", seed)
}
// symmetric + matching topic + sufficient PoW: match
fsym.PoW = env.PoW() / 2
match = fsym.MatchEnvelope(env)
if !match {
t.Fatalf("failed MatchEnvelope(symmetric + matching topic + sufficient PoW) with seed %d.", seed)
}
// symmetric + topics are nil (wildcard): match
prevTopics := fsym.Topics
fsym.Topics = nil
match = fsym.MatchEnvelope(env)
if !match {
t.Fatalf("failed MatchEnvelope(symmetric + topics are nil) with seed %d.", seed)
}
fsym.Topics = prevTopics
// encrypt asymmetrically
key, err := crypto.GenerateKey()
if err != nil {
t.Fatalf("failed GenerateKey with seed %d: %s.", seed, err)
}
params.KeySym = nil
params.Dst = &key.PublicKey
msg, err = NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err = msg.Wrap(params, time.Now())
if err != nil {
t.Fatalf("failed Wrap() with seed %d: %s.", seed, err)
}
// encryption method mismatch
match = fsym.MatchEnvelope(env)
if match {
t.Fatalf("failed MatchEnvelope(encryption method mismatch) with seed %d.", seed)
}
// asymmetric + mismatching topic: mismatch
match = fasym.MatchEnvelope(env)
if !match {
t.Fatalf("failed MatchEnvelope(asymmetric + mismatching topic) with seed %d.", seed)
}
// asymmetric + matching topic: match
fasym.Topics[i] = fasym.Topics[i+1]
match = fasym.MatchEnvelope(env)
if !match {
t.Fatalf("failed MatchEnvelope(asymmetric + matching topic) with seed %d.", seed)
}
// asymmetric + filter without topic (wildcard): match
fasym.Topics = nil
match = fasym.MatchEnvelope(env)
if !match {
t.Fatalf("failed MatchEnvelope(asymmetric + filter without topic) with seed %d.", seed)
}
// asymmetric + insufficient PoW: mismatch
fasym.PoW = env.PoW() + 1.0
match = fasym.MatchEnvelope(env)
if match {
t.Fatalf("failed MatchEnvelope(asymmetric + insufficient PoW) with seed %d.", seed)
}
// asymmetric + sufficient PoW: match
fasym.PoW = env.PoW() / 2
match = fasym.MatchEnvelope(env)
if !match {
t.Fatalf("failed MatchEnvelope(asymmetric + sufficient PoW) with seed %d.", seed)
}
// filter without topic + envelope without topic: match
env.Topic = TopicType{}
match = fasym.MatchEnvelope(env)
if !match {
t.Fatalf("failed MatchEnvelope(filter without topic + envelope without topic) with seed %d.", seed)
}
// filter with topic + envelope without topic: mismatch
fasym.Topics = fsym.Topics
match = fasym.MatchEnvelope(env)
if !match {
// topic mismatch should have no affect, as topics are handled by topic matchers
t.Fatalf("failed MatchEnvelope(filter without topic + envelope without topic) with seed %d.", seed)
}
}
func TestMatchMessageSym(t *testing.T) {
InitSingleTest()
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
f, err := generateFilter(t, true)
if err != nil {
t.Fatalf("failed generateFilter with seed %d: %s.", seed, err)
}
const index = 1
params.KeySym = f.KeySym
params.Topic = BytesToTopic(f.Topics[index])
sentMessage, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := sentMessage.Wrap(params, time.Now())
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
msg := env.Open(f)
if msg == nil {
t.Fatalf("failed Open with seed %d.", seed)
}
// Src: match
*f.Src.X = *params.Src.PublicKey.X
*f.Src.Y = *params.Src.PublicKey.Y
if !f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(src match) with seed %d.", seed)
}
// insufficient PoW: mismatch
f.PoW = msg.PoW + 1.0
if f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(insufficient PoW) with seed %d.", seed)
}
// sufficient PoW: match
f.PoW = msg.PoW / 2
if !f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(sufficient PoW) with seed %d.", seed)
}
// topic mismatch
f.Topics[index][0]++
if !f.MatchMessage(msg) {
// topic mismatch should have no affect, as topics are handled by topic matchers
t.Fatalf("failed MatchEnvelope(topic mismatch) with seed %d.", seed)
}
f.Topics[index][0]--
// key mismatch
f.SymKeyHash[0]++
if f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(key mismatch) with seed %d.", seed)
}
f.SymKeyHash[0]--
// Src absent: match
f.Src = nil
if !f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(src absent) with seed %d.", seed)
}
// key hash mismatch
h := f.SymKeyHash
f.SymKeyHash = common.Hash{}
if f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(key hash mismatch) with seed %d.", seed)
}
f.SymKeyHash = h
if !f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(key hash match) with seed %d.", seed)
}
// encryption method mismatch
f.KeySym = nil
f.KeyAsym, err = crypto.GenerateKey()
if err != nil {
t.Fatalf("failed GenerateKey with seed %d: %s.", seed, err)
}
if f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(encryption method mismatch) with seed %d.", seed)
}
}
func TestMatchMessageAsym(t *testing.T) {
InitSingleTest()
f, err := generateFilter(t, false)
if err != nil {
t.Fatalf("failed generateFilter with seed %d: %s.", seed, err)
}
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
const index = 1
params.Topic = BytesToTopic(f.Topics[index])
params.Dst = &f.KeyAsym.PublicKey
keySymOrig := params.KeySym
params.KeySym = nil
sentMessage, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := sentMessage.Wrap(params, time.Now())
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
msg := env.Open(f)
if msg == nil {
t.Fatalf("failed to open with seed %d.", seed)
}
// Src: match
*f.Src.X = *params.Src.PublicKey.X
*f.Src.Y = *params.Src.PublicKey.Y
if !f.MatchMessage(msg) {
t.Fatalf("failed MatchMessage(src match) with seed %d.", seed)
}
// insufficient PoW: mismatch
f.PoW = msg.PoW + 1.0
if f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(insufficient PoW) with seed %d.", seed)
}
// sufficient PoW: match
f.PoW = msg.PoW / 2
if !f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(sufficient PoW) with seed %d.", seed)
}
// topic mismatch
f.Topics[index][0]++
if !f.MatchMessage(msg) {
// topic mismatch should have no affect, as topics are handled by topic matchers
t.Fatalf("failed MatchEnvelope(topic mismatch) with seed %d.", seed)
}
f.Topics[index][0]--
// key mismatch
prev := *f.KeyAsym.PublicKey.X
zero := *big.NewInt(0)
*f.KeyAsym.PublicKey.X = zero
if f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(key mismatch) with seed %d.", seed)
}
*f.KeyAsym.PublicKey.X = prev
// Src absent: match
f.Src = nil
if !f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(src absent) with seed %d.", seed)
}
// encryption method mismatch
f.KeySym = keySymOrig
f.KeyAsym = nil
if f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(encryption method mismatch) with seed %d.", seed)
}
}
func cloneFilter(orig *Filter) *Filter {
var clone Filter
clone.Messages = NewMemoryMessageStore()
clone.Src = orig.Src
clone.KeyAsym = orig.KeyAsym
clone.KeySym = orig.KeySym
clone.Topics = orig.Topics
clone.PoW = orig.PoW
clone.AllowP2P = orig.AllowP2P
clone.SymKeyHash = orig.SymKeyHash
return &clone
}
func generateCompatibeEnvelope(t *testing.T, f *Filter) *Envelope {
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
return nil
}
params.KeySym = f.KeySym
params.Topic = BytesToTopic(f.Topics[2])
sentMessage, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := sentMessage.Wrap(params, time.Now())
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
return nil
}
return env
}
func TestWatchers(t *testing.T) {
InitSingleTest()
const NumFilters = 16
const NumMessages = 256
var i int
var j uint32
var e *Envelope
var x, firstID string
var err error
w := New(&Config{}, nil)
filters := NewFilters(w)
tst := generateTestCases(t, NumFilters)
for i = 0; i < NumFilters; i++ {
tst[i].f.Src = nil
x, err = filters.Install(tst[i].f)
if err != nil {
t.Fatalf("failed to install filter with seed %d: %s.", seed, err)
}
tst[i].id = x
if len(firstID) == 0 {
firstID = x
}
}
lastID := x
var envelopes [NumMessages]*Envelope
for i = 0; i < NumMessages; i++ {
j = mrand.Uint32() % NumFilters
e = generateCompatibeEnvelope(t, tst[j].f)
envelopes[i] = e
tst[j].msgCnt++
}
for i = 0; i < NumMessages; i++ {
filters.NotifyWatchers(envelopes[i], false)
}
var total int
var mail []*ReceivedMessage
var count [NumFilters]int
for i = 0; i < NumFilters; i++ {
mail = tst[i].f.Retrieve()
count[i] = len(mail)
total += len(mail)
}
if total != NumMessages {
t.Fatalf("failed with seed %d: total = %d, want: %d.", seed, total, NumMessages)
}
for i = 0; i < NumFilters; i++ {
mail = tst[i].f.Retrieve()
if len(mail) != 0 {
t.Fatalf("failed with seed %d: i = %d.", seed, i)
}
if tst[i].msgCnt != count[i] {
t.Fatalf("failed with seed %d: count[%d]: get %d, want %d.", seed, i, tst[i].msgCnt, count[i])
}
}
// another round with a cloned filter
clone := cloneFilter(tst[0].f)
filters.Uninstall(lastID)
total = 0
last := NumFilters - 1
tst[last].f = clone
filters.Install(clone)
for i = 0; i < NumFilters; i++ {
tst[i].msgCnt = 0
count[i] = 0
}
// make sure that the first watcher receives at least one message
e = generateCompatibeEnvelope(t, tst[0].f)
envelopes[0] = e
tst[0].msgCnt++
for i = 1; i < NumMessages; i++ {
j = mrand.Uint32() % NumFilters
e = generateCompatibeEnvelope(t, tst[j].f)
envelopes[i] = e
tst[j].msgCnt++
}
for i = 0; i < NumMessages; i++ {
filters.NotifyWatchers(envelopes[i], false)
}
for i = 0; i < NumFilters; i++ {
mail = tst[i].f.Retrieve()
count[i] = len(mail)
total += len(mail)
}
combined := tst[0].msgCnt + tst[last].msgCnt
if total != NumMessages+count[0] {
t.Fatalf("failed with seed %d: total = %d, count[0] = %d.", seed, total, count[0])
}
if combined != count[0] {
t.Fatalf("failed with seed %d: combined = %d, count[0] = %d.", seed, combined, count[0])
}
if combined != count[last] {
t.Fatalf("failed with seed %d: combined = %d, count[last] = %d.", seed, combined, count[last])
}
for i = 1; i < NumFilters-1; i++ {
mail = tst[i].f.Retrieve()
if len(mail) != 0 {
t.Fatalf("failed with seed %d: i = %d.", seed, i)
}
if tst[i].msgCnt != count[i] {
t.Fatalf("failed with seed %d: i = %d, get %d, want %d.", seed, i, tst[i].msgCnt, count[i])
}
}
// test AcceptP2P
total = 0
filters.NotifyWatchers(envelopes[0], true)
for i = 0; i < NumFilters; i++ {
mail = tst[i].f.Retrieve()
total += len(mail)
}
if total != 0 {
t.Fatalf("failed with seed %d: total: got %d, want 0.", seed, total)
}
f := filters.Get(firstID)
if f == nil {
t.Fatalf("failed to get the filter with seed %d.", seed)
}
f.AllowP2P = true
total = 0
filters.NotifyWatchers(envelopes[0], true)
for i = 0; i < NumFilters; i++ {
mail = tst[i].f.Retrieve()
total += len(mail)
}
if total != 1 {
t.Fatalf("failed with seed %d: total: got %d, want 1.", seed, total)
}
}
func TestVariableTopics(t *testing.T) {
InitSingleTest()
const lastTopicByte = 3
var match bool
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
msg, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := msg.Wrap(params, time.Now())
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
f, err := generateFilter(t, true)
if err != nil {
t.Fatalf("failed generateFilter with seed %d: %s.", seed, err)
}
for i := 0; i < 4; i++ {
env.Topic = BytesToTopic(f.Topics[i])
match = f.MatchEnvelope(env)
if !match {
t.Fatalf("failed MatchEnvelope symmetric with seed %d, step %d.", seed, i)
}
f.Topics[i][lastTopicByte]++
match = f.MatchEnvelope(env)
if !match {
// topic mismatch should have no affect, as topics are handled by topic matchers
t.Fatalf("MatchEnvelope symmetric with seed %d, step %d.", seed, i)
}
}
}