path: root/swarm/pss/client/client_test.go

// Copyright 2018 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum 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 go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// 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 go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

package client

import (
    "bytes"
    "context"
    "flag"
    "fmt"
    "math/rand"
    "os"
    "sync"
    "testing"
    "time"

    "github.com/dexon-foundation/dexon/common/hexutil"
    "github.com/dexon-foundation/dexon/log"
    "github.com/dexon-foundation/dexon/node"
    "github.com/dexon-foundation/dexon/p2p"
    "github.com/dexon-foundation/dexon/p2p/enode"
    "github.com/dexon-foundation/dexon/p2p/simulations"
    "github.com/dexon-foundation/dexon/p2p/simulations/adapters"
    "github.com/dexon-foundation/dexon/rpc"
    "github.com/dexon-foundation/dexon/swarm/network"
    "github.com/dexon-foundation/dexon/swarm/pss"
    "github.com/dexon-foundation/dexon/swarm/state"
    whisper "github.com/dexon-foundation/dexon/whisper/whisperv6"
)

type protoCtrl struct {
    C        chan bool
    protocol *pss.Protocol
    run      func(*p2p.Peer, p2p.MsgReadWriter) error
}

var (
    debugdebugflag = flag.Bool("vv", false, "veryverbose")
    debugflag      = flag.Bool("v", false, "verbose")
    w              *whisper.Whisper
    wapi           *whisper.PublicWhisperAPI
    // custom logging
    psslogmain   log.Logger
    pssprotocols map[string]*protoCtrl
    sendLimit    = uint16(256)
)

var services = newServices()

func init() {
    flag.Parse()
    rand.Seed(time.Now().Unix())

    adapters.RegisterServices(services)

    loglevel := log.LvlInfo
    if *debugflag {
        loglevel = log.LvlDebug
    } else if *debugdebugflag {
        loglevel = log.LvlTrace
    }

    psslogmain = log.New("psslog", "*")
    hs := log.StreamHandler(os.Stderr, log.TerminalFormat(true))
    hf := log.LvlFilterHandler(loglevel, hs)
    h := log.CallerFileHandler(hf)
    log.Root().SetHandler(h)

    w = whisper.New(&whisper.DefaultConfig)
    wapi = whisper.NewPublicWhisperAPI(w)

    pssprotocols = make(map[string]*protoCtrl)
}

// ping pong exchange across one expired symkey
func TestClientHandshake(t *testing.T) {
    sendLimit = 3

    clients, err := setupNetwork(2)
    if err != nil {
        t.Fatal(err)
    }

    lpsc, err := NewClientWithRPC(clients[0])
    if err != nil {
        t.Fatal(err)
    }
    rpsc, err := NewClientWithRPC(clients[1])
    if err != nil {
        t.Fatal(err)
    }
    lpssping := &pss.Ping{
        OutC: make(chan bool),
        InC:  make(chan bool),
        Pong: false,
    }
    rpssping := &pss.Ping{
        OutC: make(chan bool),
        InC:  make(chan bool),
        Pong: false,
    }
    lproto := pss.NewPingProtocol(lpssping)
    rproto := pss.NewPingProtocol(rpssping)

    ctx, cancel := context.WithTimeout(context.Background(), time.Second*10)
    defer cancel()
    err = lpsc.RunProtocol(ctx, lproto)
    if err != nil {
        t.Fatal(err)
    }
    err = rpsc.RunProtocol(ctx, rproto)
    if err != nil {
        t.Fatal(err)
    }
    topic := pss.PingTopic.String()

    var loaddr string
    err = clients[0].Call(&loaddr, "pss_baseAddr")
    if err != nil {
        t.Fatalf("rpc get node 1 baseaddr fail: %v", err)
    }
    var roaddr string
    err = clients[1].Call(&roaddr, "pss_baseAddr")
    if err != nil {
        t.Fatalf("rpc get node 2 baseaddr fail: %v", err)
    }

    var lpubkey string
    err = clients[0].Call(&lpubkey, "pss_getPublicKey")
    if err != nil {
        t.Fatalf("rpc get node 1 pubkey fail: %v", err)
    }
    var rpubkey string
    err = clients[1].Call(&rpubkey, "pss_getPublicKey")
    if err != nil {
        t.Fatalf("rpc get node 2 pubkey fail: %v", err)
    }

    err = clients[0].Call(nil, "pss_setPeerPublicKey", rpubkey, topic, roaddr)
    if err != nil {
        t.Fatal(err)
    }
    err = clients[1].Call(nil, "pss_setPeerPublicKey", lpubkey, topic, loaddr)
    if err != nil {
        t.Fatal(err)
    }

    time.Sleep(time.Second)

    roaddrbytes, err := hexutil.Decode(roaddr)
    if err != nil {
        t.Fatal(err)
    }
    err = lpsc.AddPssPeer(rpubkey, roaddrbytes, pss.PingProtocol)
    if err != nil {
        t.Fatal(err)
    }

    time.Sleep(time.Second)

    for i := uint16(0); i <= sendLimit; i++ {
        lpssping.OutC <- false
        got := <-rpssping.InC
        log.Warn("ok", "idx", i, "got", got)
        time.Sleep(time.Second)
    }

    rw := lpsc.peerPool[pss.PingTopic][rpubkey]
    lpsc.RemovePssPeer(rpubkey, pss.PingProtocol)
    if err := rw.WriteMsg(p2p.Msg{
        Size:    3,
        Payload: bytes.NewReader([]byte("foo")),
    }); err == nil {
        t.Fatalf("expected error on write")
    }
}

func setupNetwork(numnodes int) (clients []*rpc.Client, err error) {
    nodes := make([]*simulations.Node, numnodes)
    clients = make([]*rpc.Client, numnodes)
    if numnodes < 2 {
        return nil, fmt.Errorf("Minimum two nodes in network")
    }
    adapter := adapters.NewSimAdapter(services)
    net := simulations.NewNetwork(adapter, &simulations.NetworkConfig{
        ID:             "0",
        DefaultService: "bzz",
    })
    for i := 0; i < numnodes; i++ {
        nodeconf := adapters.RandomNodeConfig()
        nodeconf.Services = []string{"bzz", "pss"}
        nodes[i], err = net.NewNodeWithConfig(nodeconf)
        if err != nil {
            return nil, fmt.Errorf("error creating node 1: %v", err)
        }
        err = net.Start(nodes[i].ID())
        if err != nil {
            return nil, fmt.Errorf("error starting node 1: %v", err)
        }
        if i > 0 {
            err = net.Connect(nodes[i].ID(), nodes[i-1].ID())
            if err != nil {
                return nil, fmt.Errorf("error connecting nodes: %v", err)
            }
        }
        clients[i], err = nodes[i].Client()
        if err != nil {
            return nil, fmt.Errorf("create node 1 rpc client fail: %v", err)
        }
    }
    if numnodes > 2 {
        err = net.Connect(nodes[0].ID(), nodes[len(nodes)-1].ID())
        if err != nil {
            return nil, fmt.Errorf("error connecting first and last nodes")
        }
    }
    return clients, nil
}

func newServices() adapters.Services {
    stateStore := state.NewInmemoryStore()
    kademlias := make(map[enode.ID]*network.Kademlia)
    kademlia := func(id enode.ID) *network.Kademlia {
        if k, ok := kademlias[id]; ok {
            return k
        }
        params := network.NewKadParams()
        params.NeighbourhoodSize = 2
        params.MaxBinSize = 3
        params.MinBinSize = 1
        params.MaxRetries = 1000
        params.RetryExponent = 2
        params.RetryInterval = 1000000
        kademlias[id] = network.NewKademlia(id[:], params)
        return kademlias[id]
    }
    return adapters.Services{
        "pss": func(ctx *adapters.ServiceContext) (node.Service, error) {
            ctxlocal, cancel := context.WithTimeout(context.Background(), time.Second)
            defer cancel()
            keys, err := wapi.NewKeyPair(ctxlocal)
            if err != nil {
                return nil, err
            }
            privkey, err := w.GetPrivateKey(keys)
            if err != nil {
                return nil, err
            }
            psparams := pss.NewPssParams().WithPrivateKey(privkey)
            pskad := kademlia(ctx.Config.ID)
            ps, err := pss.NewPss(pskad, psparams)
            if err != nil {
                return nil, err
            }
            pshparams := pss.NewHandshakeParams()
            pshparams.SymKeySendLimit = sendLimit
            err = pss.SetHandshakeController(ps, pshparams)
            if err != nil {
                return nil, fmt.Errorf("handshake controller fail: %v", err)
            }
            return ps, nil
        },
        "bzz": func(ctx *adapters.ServiceContext) (node.Service, error) {
            addr := network.NewAddr(ctx.Config.Node())
            hp := network.NewHiveParams()
            hp.Discovery = false
            config := &network.BzzConfig{
                OverlayAddr:  addr.Over(),
                UnderlayAddr: addr.Under(),
                HiveParams:   hp,
            }
            return network.NewBzz(config, kademlia(ctx.Config.ID), stateStore, nil, nil), nil
        },
    }
}

// copied from swarm/network/protocol_test_go
type testStore struct {
    sync.Mutex

    values map[string][]byte
}

func (t *testStore) Load(key string) ([]byte, error) {
    return nil, nil
}

func (t *testStore) Save(key string, v []byte) error {
    return nil
}