462 lines
12 KiB
Go
462 lines
12 KiB
Go
// Copyright 2016 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package whisperv6
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import (
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"bytes"
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"crypto/ecdsa"
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"fmt"
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mrand "math/rand"
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"net"
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"sync"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/p2p"
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"github.com/ethereum/go-ethereum/p2p/discover"
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"github.com/ethereum/go-ethereum/p2p/nat"
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)
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var keys = []string{
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"d49dcf37238dc8a7aac57dc61b9fee68f0a97f062968978b9fafa7d1033d03a9",
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"73fd6143c48e80ed3c56ea159fe7494a0b6b393a392227b422f4c3e8f1b54f98",
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"119dd32adb1daa7a4c7bf77f847fb28730785aa92947edf42fdd997b54de40dc",
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"deeda8709dea935bb772248a3144dea449ffcc13e8e5a1fd4ef20ce4e9c87837",
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"5bd208a079633befa349441bdfdc4d85ba9bd56081525008380a63ac38a407cf",
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"1d27fb4912002d58a2a42a50c97edb05c1b3dffc665dbaa42df1fe8d3d95c9b5",
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"15def52800c9d6b8ca6f3066b7767a76afc7b611786c1276165fbc61636afb68",
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"51be6ab4b2dc89f251ff2ace10f3c1cc65d6855f3e083f91f6ff8efdfd28b48c",
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"ef1ef7441bf3c6419b162f05da6037474664f198b58db7315a6f4de52414b4a0",
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"09bdf6985aabc696dc1fbeb5381aebd7a6421727343872eb2fadfc6d82486fd9",
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"15d811bf2e01f99a224cdc91d0cf76cea08e8c67905c16fee9725c9be71185c4",
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"2f83e45cf1baaea779789f755b7da72d8857aeebff19362dd9af31d3c9d14620",
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"73f04e34ac6532b19c2aae8f8e52f38df1ac8f5cd10369f92325b9b0494b0590",
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"1e2e07b69e5025537fb73770f483dc8d64f84ae3403775ef61cd36e3faf162c1",
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"8963d9bbb3911aac6d30388c786756b1c423c4fbbc95d1f96ddbddf39809e43a",
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"0422da85abc48249270b45d8de38a4cc3c02032ede1fcf0864a51092d58a2f1f",
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"8ae5c15b0e8c7cade201fdc149831aa9b11ff626a7ffd27188886cc108ad0fa8",
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"acd8f5a71d4aecfcb9ad00d32aa4bcf2a602939b6a9dd071bab443154184f805",
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"a285a922125a7481600782ad69debfbcdb0316c1e97c267aff29ef50001ec045",
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"28fd4eee78c6cd4bf78f39f8ab30c32c67c24a6223baa40e6f9c9a0e1de7cef5",
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"c5cca0c9e6f043b288c6f1aef448ab59132dab3e453671af5d0752961f013fc7",
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"46df99b051838cb6f8d1b73f232af516886bd8c4d0ee07af9a0a033c391380fd",
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"c6a06a53cbaadbb432884f36155c8f3244e244881b5ee3e92e974cfa166d793f",
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"783b90c75c63dc72e2f8d11b6f1b4de54d63825330ec76ee8db34f06b38ea211",
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"9450038f10ca2c097a8013e5121b36b422b95b04892232f930a29292d9935611",
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"e215e6246ed1cfdcf7310d4d8cdbe370f0d6a8371e4eb1089e2ae05c0e1bc10f",
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"487110939ed9d64ebbc1f300adeab358bc58875faf4ca64990fbd7fe03b78f2b",
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"824a70ea76ac81366da1d4f4ac39de851c8ac49dca456bb3f0a186ceefa269a5",
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"ba8f34fa40945560d1006a328fe70c42e35cc3d1017e72d26864cd0d1b150f15",
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"30a5dfcfd144997f428901ea88a43c8d176b19c79dde54cc58eea001aa3d246c",
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"de59f7183aca39aa245ce66a05245fecfc7e2c75884184b52b27734a4a58efa2",
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"92629e2ff5f0cb4f5f08fffe0f64492024d36f045b901efb271674b801095c5a",
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"7184c1701569e3a4c4d2ddce691edd983b81e42e09196d332e1ae2f1e062cff4",
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}
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const NumNodes = 16 // must not exceed the number of keys (32)
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type TestData struct {
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counter [NumNodes]int
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mutex sync.RWMutex
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}
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type TestNode struct {
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shh *Whisper
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id *ecdsa.PrivateKey
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server *p2p.Server
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filerID string
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}
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var result TestData
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var nodes [NumNodes]*TestNode
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var sharedKey = hexutil.MustDecode("0x03ca634cae0d49acb401d8a4c6b6fe8c55b70d115bf400769cc1400f3258cd31")
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var sharedTopic = TopicType{0xF, 0x1, 0x2, 0}
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var expectedMessage = []byte("per rectum ad astra")
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var masterBloomFilter []byte
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var masterPow = 0.00000001
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var round = 1
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func TestSimulation(t *testing.T) {
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// create a chain of whisper nodes,
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// installs the filters with shared (predefined) parameters
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initialize(t)
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// each node sends a number of random (undecryptable) messages
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for i := 0; i < NumNodes; i++ {
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sendMsg(t, false, i)
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}
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// node #0 sends one expected (decryptable) message
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sendMsg(t, true, 0)
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// check if each node have received and decrypted exactly one message
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checkPropagation(t, true)
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// check if Status message was correctly decoded
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checkBloomFilterExchange(t)
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checkPowExchange(t)
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// send new pow and bloom exchange messages
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resetParams(t)
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round++
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// node #1 sends one expected (decryptable) message
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sendMsg(t, true, 1)
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// check if each node (except node #0) have received and decrypted exactly one message
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checkPropagation(t, false)
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// check if corresponding protocol-level messages were correctly decoded
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checkPowExchangeForNodeZero(t)
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checkBloomFilterExchange(t)
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stopServers()
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}
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func resetParams(t *testing.T) {
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// change pow only for node zero
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masterPow = 7777777.0
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nodes[0].shh.SetMinimumPoW(masterPow)
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// change bloom for all nodes
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masterBloomFilter = TopicToBloom(sharedTopic)
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for i := 0; i < NumNodes; i++ {
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nodes[i].shh.SetBloomFilter(masterBloomFilter)
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}
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}
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func initBloom(t *testing.T) {
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masterBloomFilter = make([]byte, bloomFilterSize)
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_, err := mrand.Read(masterBloomFilter)
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if err != nil {
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t.Fatalf("rand failed: %s.", err)
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}
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msgBloom := TopicToBloom(sharedTopic)
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masterBloomFilter = addBloom(masterBloomFilter, msgBloom)
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for i := 0; i < 32; i++ {
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masterBloomFilter[i] = 0xFF
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}
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if !bloomFilterMatch(masterBloomFilter, msgBloom) {
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t.Fatalf("bloom mismatch on initBloom.")
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}
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}
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func initialize(t *testing.T) {
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initBloom(t)
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var err error
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ip := net.IPv4(127, 0, 0, 1)
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port0 := 30303
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for i := 0; i < NumNodes; i++ {
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var node TestNode
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b := make([]byte, bloomFilterSize)
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copy(b, masterBloomFilter)
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node.shh = New(&DefaultConfig)
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node.shh.SetMinimumPoW(masterPow)
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node.shh.SetBloomFilter(b)
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if !bytes.Equal(node.shh.BloomFilter(), masterBloomFilter) {
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t.Fatalf("bloom mismatch on init.")
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}
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node.shh.Start(nil)
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topics := make([]TopicType, 0)
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topics = append(topics, sharedTopic)
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f := Filter{KeySym: sharedKey}
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f.Topics = [][]byte{topics[0][:]}
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node.filerID, err = node.shh.Subscribe(&f)
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if err != nil {
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t.Fatalf("failed to install the filter: %s.", err)
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}
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node.id, err = crypto.HexToECDSA(keys[i])
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if err != nil {
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t.Fatalf("failed convert the key: %s.", keys[i])
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}
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port := port0 + i
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addr := fmt.Sprintf(":%d", port) // e.g. ":30303"
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name := common.MakeName("whisper-go", "2.0")
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var peers []*discover.Node
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if i > 0 {
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peerNodeID := nodes[i-1].id
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peerPort := uint16(port - 1)
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peerNode := discover.PubkeyID(&peerNodeID.PublicKey)
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peer := discover.NewNode(peerNode, ip, peerPort, peerPort)
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peers = append(peers, peer)
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}
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node.server = &p2p.Server{
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Config: p2p.Config{
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PrivateKey: node.id,
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MaxPeers: NumNodes/2 + 1,
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Name: name,
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Protocols: node.shh.Protocols(),
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ListenAddr: addr,
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NAT: nat.Any(),
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BootstrapNodes: peers,
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StaticNodes: peers,
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TrustedNodes: peers,
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},
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}
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nodes[i] = &node
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}
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for i := 1; i < NumNodes; i++ {
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go nodes[i].server.Start()
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}
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// we need to wait until the first node actually starts
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err = nodes[0].server.Start()
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if err != nil {
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t.Fatalf("failed to start the fisrt server.")
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}
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}
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func stopServers() {
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for i := 0; i < NumNodes; i++ {
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n := nodes[i]
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if n != nil {
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n.shh.Unsubscribe(n.filerID)
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n.shh.Stop()
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n.server.Stop()
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}
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}
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}
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func checkPropagation(t *testing.T, includingNodeZero bool) {
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if t.Failed() {
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return
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}
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const cycle = 50
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const iterations = 200
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first := 0
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if !includingNodeZero {
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first = 1
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}
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for j := 0; j < iterations; j++ {
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for i := first; i < NumNodes; i++ {
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f := nodes[i].shh.GetFilter(nodes[i].filerID)
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if f == nil {
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t.Fatalf("failed to get filterId %s from node %d, round %d.", nodes[i].filerID, i, round)
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}
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mail := f.Retrieve()
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if !validateMail(t, i, mail) {
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return
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}
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if isTestComplete() {
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return
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}
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}
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time.Sleep(cycle * time.Millisecond)
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}
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t.Fatalf("Test was not complete: timeout %d seconds.", iterations*cycle/1000)
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if !includingNodeZero {
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f := nodes[0].shh.GetFilter(nodes[0].filerID)
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if f != nil {
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t.Fatalf("node zero received a message with low PoW.")
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}
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}
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}
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func validateMail(t *testing.T, index int, mail []*ReceivedMessage) bool {
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var cnt int
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for _, m := range mail {
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if bytes.Equal(m.Payload, expectedMessage) {
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cnt++
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}
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}
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if cnt == 0 {
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// no messages received yet: nothing is wrong
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return true
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}
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if cnt > 1 {
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t.Fatalf("node %d received %d.", index, cnt)
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return false
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}
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if cnt > 0 {
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result.mutex.Lock()
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defer result.mutex.Unlock()
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result.counter[index] += cnt
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if result.counter[index] > 1 {
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t.Fatalf("node %d accumulated %d.", index, result.counter[index])
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}
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}
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return true
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}
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func isTestComplete() bool {
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result.mutex.RLock()
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defer result.mutex.RUnlock()
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for i := 0; i < NumNodes; i++ {
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if result.counter[i] < 1 {
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return false
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}
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}
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for i := 0; i < NumNodes; i++ {
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envelopes := nodes[i].shh.Envelopes()
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if len(envelopes) < 2 {
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return false
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}
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}
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return true
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}
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func sendMsg(t *testing.T, expected bool, id int) {
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if t.Failed() {
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return
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}
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opt := MessageParams{KeySym: sharedKey, Topic: sharedTopic, Payload: expectedMessage, PoW: 0.00000001, WorkTime: 1}
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if !expected {
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opt.KeySym[0]++
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opt.Topic[0]++
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opt.Payload = opt.Payload[1:]
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}
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msg, err := newSentMessage(&opt)
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if err != nil {
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t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
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}
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envelope, err := msg.Wrap(&opt)
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if err != nil {
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t.Fatalf("failed to seal message: %s", err)
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}
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err = nodes[id].shh.Send(envelope)
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if err != nil {
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t.Fatalf("failed to send message: %s", err)
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}
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}
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func TestPeerBasic(t *testing.T) {
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InitSingleTest()
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params, err := generateMessageParams()
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if err != nil {
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t.Fatalf("failed generateMessageParams with seed %d.", seed)
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}
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params.PoW = 0.001
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msg, err := newSentMessage(params)
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if err != nil {
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t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
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}
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env, err := msg.Wrap(params)
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if err != nil {
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t.Fatalf("failed Wrap with seed %d.", seed)
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}
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p := newPeer(nil, nil, nil)
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p.mark(env)
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if !p.marked(env) {
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t.Fatalf("failed mark with seed %d.", seed)
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}
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}
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func checkPowExchangeForNodeZero(t *testing.T) {
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const iterations = 200
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for j := 0; j < iterations; j++ {
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lastCycle := (j == iterations-1)
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ok := checkPowExchangeForNodeZeroOnce(t, lastCycle)
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if ok {
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break
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}
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time.Sleep(50 * time.Millisecond)
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}
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}
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func checkPowExchangeForNodeZeroOnce(t *testing.T, mustPass bool) bool {
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cnt := 0
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for i, node := range nodes {
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for peer := range node.shh.peers {
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if peer.peer.ID() == discover.PubkeyID(&nodes[0].id.PublicKey) {
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cnt++
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if peer.powRequirement != masterPow {
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if mustPass {
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t.Fatalf("node %d: failed to set the new pow requirement for node zero.", i)
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} else {
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return false
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}
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}
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}
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}
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}
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if cnt == 0 {
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t.Fatalf("looking for node zero: no matching peers found.")
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}
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return true
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}
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func checkPowExchange(t *testing.T) {
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for i, node := range nodes {
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for peer := range node.shh.peers {
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if peer.peer.ID() != discover.PubkeyID(&nodes[0].id.PublicKey) {
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if peer.powRequirement != masterPow {
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t.Fatalf("node %d: failed to exchange pow requirement in round %d; expected %f, got %f",
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i, round, masterPow, peer.powRequirement)
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}
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}
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}
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}
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}
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func checkBloomFilterExchangeOnce(t *testing.T, mustPass bool) bool {
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for i, node := range nodes {
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for peer := range node.shh.peers {
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if !bytes.Equal(peer.bloomFilter, masterBloomFilter) {
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if mustPass {
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t.Fatalf("node %d: failed to exchange bloom filter requirement in round %d. \n%x expected \n%x got",
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i, round, masterBloomFilter, peer.bloomFilter)
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} else {
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return false
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}
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}
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}
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}
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return true
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}
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func checkBloomFilterExchange(t *testing.T) {
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const iterations = 200
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for j := 0; j < iterations; j++ {
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lastCycle := (j == iterations-1)
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ok := checkBloomFilterExchangeOnce(t, lastCycle)
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if ok {
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break
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}
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time.Sleep(50 * time.Millisecond)
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}
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}
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