// Create a new Acknowledgement.  Must be called by a leader.  This
// call assumes all the pieces are in place to create a new acknowledgement
func (s *State) NewAck(msg interfaces.IMsg) interfaces.IMsg {

	vmIndex := msg.GetVMIndex()

	msg.SetLeaderChainID(s.IdentityChainID)
	ack := new(messages.Ack)
	ack.DBHeight = s.LLeaderHeight
	ack.VMIndex = vmIndex
	ack.Minute = byte(s.ProcessLists.Get(s.LLeaderHeight).VMs[vmIndex].LeaderMinute)
	ack.Timestamp = s.GetTimestamp()
	ack.SaltNumber = s.GetSalt(ack.Timestamp)
	copy(ack.Salt[:8], s.Salt.Bytes()[:8])
	ack.MessageHash = msg.GetMsgHash()
	ack.LeaderChainID = s.IdentityChainID

	listlen := len(s.LeaderPL.VMs[vmIndex].List)
	if listlen == 0 {
		ack.Height = 0
		ack.SerialHash = ack.MessageHash
	} else {
		last := s.LeaderPL.GetAckAt(vmIndex, listlen-1)
		ack.Height = last.Height + 1
		ack.SerialHash, _ = primitives.CreateHash(last.MessageHash, ack.MessageHash)
	}

	ack.Sign(s)

	return ack
}
func TestAuthoritySignature(t *testing.T) {
	s := testHelper.CreateAndPopulateTestState()
	idindex := s.CreateBlankFactomIdentity(primitives.NewZeroHash())
	s.Identities[idindex].ManagementChainID = primitives.NewZeroHash()

	index := s.AddAuthorityFromChainID(primitives.NewZeroHash())
	s.Authorities[index].SigningKey = *(s.GetServerPublicKey())
	s.Authorities[index].Status = 1

	ack := new(messages.Ack)
	ack.DBHeight = s.LLeaderHeight
	ack.VMIndex = 1
	ack.Minute = byte(5)
	ack.Timestamp = s.GetTimestamp()
	ack.MessageHash = primitives.NewZeroHash()
	ack.LeaderChainID = s.IdentityChainID
	ack.SerialHash = primitives.NewZeroHash()

	err := ack.Sign(s)
	if err != nil {
		t.Error("Authority Test Failed when signing message")
	}

	msg, err := ack.MarshalForSignature()
	if err != nil {
		t.Error("Authority Test Failed when marshalling for sig")
	}

	sig := ack.GetSignature()
	server, err := s.Authorities[0].VerifySignature(msg, sig.GetSignature())
	if !server || err != nil {
		t.Error("Authority Test Failed when checking sigs")
	}
}
Exemple #3
0
func (p *ProcessList) AddToProcessList(ack *messages.Ack, m interfaces.IMsg) {

	if p == nil {
		return
	}

	// We don't check the SaltNumber if this isn't an actual message, i.e. a response from
	// the past.
	if !ack.Response && ack.LeaderChainID.IsSameAs(p.State.IdentityChainID) {
		num := p.State.GetSalt(ack.Timestamp)
		if num != ack.SaltNumber {
			os.Stderr.WriteString(fmt.Sprintf("This  ChainID    %x\n", p.State.IdentityChainID.Bytes()))
			os.Stderr.WriteString(fmt.Sprintf("This  Salt       %x\n", p.State.Salt.Bytes()[:8]))
			os.Stderr.WriteString(fmt.Sprintf("This  SaltNumber %x\n for this ack", num))
			os.Stderr.WriteString(fmt.Sprintf("Ack   ChainID    %x\n", ack.LeaderChainID.Bytes()))
			os.Stderr.WriteString(fmt.Sprintf("Ack   Salt       %x\n", ack.Salt))
			os.Stderr.WriteString(fmt.Sprintf("Ack   SaltNumber %x\n for this ack", ack.SaltNumber))
			panic("There are two leaders configured with the same Identity in this network!  This is a configuration problem!")
		}
	}

	if _, ok := m.(*messages.MissingMsg); ok {
		panic("This shouldn't happen")
	}

	toss := func(hint string) {
		fmt.Println("dddd TOSS in Process List", p.State.FactomNodeName, hint)
		fmt.Println("dddd TOSS in Process List", p.State.FactomNodeName, ack.String())
		fmt.Println("dddd TOSS in Process List", p.State.FactomNodeName, m.String())
		delete(p.State.Holding, ack.GetHash().Fixed())
		delete(p.State.Acks, ack.GetHash().Fixed())
	}

	now := p.State.GetTimestamp()

	vm := p.VMs[ack.VMIndex]

	if len(vm.List) > int(ack.Height) && vm.List[ack.Height] != nil {
		_, isNew2 := p.State.Replay.Valid(constants.INTERNAL_REPLAY, m.GetRepeatHash().Fixed(), m.GetTimestamp(), now)
		if !isNew2 {
			toss("seen before, or too old")
			return
		}
	}

	if ack.DBHeight != p.DBHeight {
		panic(fmt.Sprintf("Ack is wrong height.  Expected: %d Ack: %s", p.DBHeight, ack.String()))
		return
	}

	if len(vm.List) > int(ack.Height) && vm.List[ack.Height] != nil {

		if vm.List[ack.Height].GetMsgHash().IsSameAs(m.GetMsgHash()) {
			fmt.Printf("dddd %-30s %10s %s\n", "xxxxxxxxx PL Duplicate   ", p.State.GetFactomNodeName(), m.String())
			fmt.Printf("dddd %-30s %10s %s\n", "xxxxxxxxx PL Duplicate   ", p.State.GetFactomNodeName(), ack.String())
			fmt.Printf("dddd %-30s %10s %s\n", "xxxxxxxxx PL Duplicate vm", p.State.GetFactomNodeName(), vm.List[ack.Height].String())
			fmt.Printf("dddd %-30s %10s %s\n", "xxxxxxxxx PL Duplicate vm", p.State.GetFactomNodeName(), vm.ListAck[ack.Height].String())
			toss("2")
			return
		}

		vm.List[ack.Height] = nil

		return
	}

	// From this point on, we consider the transaction recorded.  If we detect it has already been
	// recorded, then we still treat it as if we recorded it.

	vm.heartBeat = 0 // We have heard from this VM

	// We have already tested and found m to be a new message.  We now record its hashes so later, we
	// can detect that it has been recorded.  We don't care about the results of IsTSValid_ at this point.
	p.State.Replay.IsTSValid_(constants.INTERNAL_REPLAY, m.GetRepeatHash().Fixed(), m.GetTimestamp(), now)
	p.State.Replay.IsTSValid_(constants.INTERNAL_REPLAY, m.GetMsgHash().Fixed(), m.GetTimestamp(), now)

	delete(p.State.Acks, ack.GetHash().Fixed())
	delete(p.State.Holding, m.GetMsgHash().Fixed())

	// Both the ack and the message hash to the same GetHash()
	m.SetLocal(false)
	ack.SetLocal(false)
	ack.SetPeer2Peer(false)
	m.SetPeer2Peer(false)

	ack.SendOut(p.State, ack)
	m.SendOut(p.State, m)

	for len(vm.List) <= int(ack.Height) {
		vm.List = append(vm.List, nil)
		vm.ListAck = append(vm.ListAck, nil)
	}

	p.VMs[ack.VMIndex].List[ack.Height] = m
	p.VMs[ack.VMIndex].ListAck[ack.Height] = ack
	p.AddOldMsgs(m)
	p.OldAcks[m.GetMsgHash().Fixed()] = ack

}