func (s *XLSuite) TestBadLengths(c *C) {
datum, err := xi.New(nil) // generates random NodeID
rng := xr.MakeSimpleRNG()
ndx := uint32(rng.Intn(256 * 256 * 256))
okData := make([]byte, 256+rng.Intn(3))
// verify nil datum causes error
nilChunk, err := NewChunk(nil, ndx, okData)
c.Assert(err, Equals, NilDatum)
c.Assert(nilChunk, Equals, (*Chunk)(nil))
// verify nil data causes error
nilChunk, err = NewChunk(datum, ndx, nil)
c.Assert(err, Equals, NilData)
c.Assert(nilChunk, Equals, (*Chunk)(nil))
// verify length of zero causes error
zeroLenData := make([]byte, 0)
lenZeroChunk, err := NewChunk(datum, ndx, zeroLenData)
c.Assert(err, Equals, ZeroLengthChunk)
c.Assert(lenZeroChunk, Equals, (*Chunk)(nil))
// verify length > MAX_CHUNK_BYTES causes error
bigData := make([]byte, MAX_CHUNK_BYTES+1+rng.Intn(3))
tooBig, err := NewChunk(datum, ndx, bigData)
c.Assert(err, Equals, ChunkTooLong)
c.Assert(tooBig, Equals, (*Chunk)(nil))
}
func (s *XLSuite) makeANodeID(c *C, rng *xr.PRNG) (nodeID *xi.NodeID) {
id := s.makeAnID(c, rng)
nodeID, err := xi.New(id)
c.Assert(err, IsNil)
c.Assert(nodeID, Not(IsNil))
return
}
func NewAdminClient(
serverName string, serverID *xi.NodeID, serverEnd xt.EndPointI,
serverCK, serverSK *rsa.PublicKey,
clusterName string, clusterAttrs uint64,
size, epCount uint32, e []xt.EndPointI) (
ac *AdminClient, err error) {
nodeID, err := xi.New(nil)
// DEBUG
fmt.Printf("NewAdminClient: admin ID %x\n", nodeID.Value())
// END
if err == nil {
node, err := xn.NewNew("admin", nodeID, "") // name, id, lfs
if err == nil {
cn, err := NewMemberMaker(node,
xcl.ATTR_ADMIN|xcl.ATTR_SOLO|xcl.ATTR_EPHEMERAL,
serverName, serverID, serverEnd, serverCK, serverSK,
clusterName, clusterAttrs, nil, size, epCount, e)
if err == nil {
// Start() fills in clusterID
ac = &AdminClient{
MemberMaker: *cn,
}
// we do NOT invoke node.OpenAcc() on adminClients
// DEBUG
fmt.Println(" NewAdminClient: OK exit")
// END
}
}
}
return
}
func NewUserMember(
name, lfs string, ckPriv, skPriv *rsa.PrivateKey,
serverName string, serverID *xi.NodeID, serverEnd xt.EndPointI,
serverCK, serverSK *rsa.PublicKey,
clusterName string, clusterAttrs uint64, clusterID *xi.NodeID,
size, epCount uint32, e []xt.EndPointI) (ac *UserMember, err error) {
var attrs uint64
nodeID, err := xi.New(nil)
if err == nil {
if lfs == "" {
attrs |= xcl.ATTR_EPHEMERAL
}
node, err := xn.New(name, nodeID, lfs, ckPriv, skPriv, nil, nil, nil)
if err == nil {
mn, err := NewMemberMaker(node,
attrs,
serverName, serverID, serverEnd,
serverCK, serverSK, // *rsa.PublicKey,
clusterName, clusterAttrs, clusterID, size,
epCount, e)
if err == nil {
// Start() fills in clusterID
ac = &UserMember{
MemberMaker: *mn,
}
}
}
}
return
}
// Given a node, construct a Peer with the same properties.
func NewPeerFromNode(node *Node) (p *Peer, err error) {
if node == nil {
err = NilNode
} else {
id := node.GetNodeID().Value()
nodeID, err := xi.New(id)
if err == nil {
var o []xo.OverlayI
for i := 0; i < node.SizeOverlays(); i++ {
o = append(o, node.GetOverlay(i))
}
var ctors []xt.ConnectorI
for i := 0; i < node.SizeAcceptors(); i++ {
var ctor *xt.TcpConnector
ep := node.GetAcceptor(i).GetEndPoint()
ctor, err = xt.NewTcpConnector(ep)
if err != nil {
break
}
ctors = append(ctors, ctor)
}
if err == nil {
p, err = NewPeer(node.GetName(), nodeID,
node.GetCommsPublicKey(), node.GetSigPublicKey(),
o, ctors)
}
}
}
return
}
// This function generates a good-quality random NodeID (a 20-byte
// value) that is not already known to the registry and then adds
// the new NodeID to the registry's Bloom filter.
func (reg *Registry) InsertUniqueNodeID() (nodeID *xi.NodeID, err error) {
nodeID, err = xi.New(nil)
found, err := reg.ContainsID(nodeID)
for err == nil && found {
nodeID, err = xi.New(nil)
found, err = reg.ContainsID(nodeID)
}
if err == nil {
err = reg.idFilter.Insert(nodeID.Value())
}
// DEBUG
reg.Logger.Printf("InsertUniqueNodeID returning %x, %v\n",
nodeID.Value(), err)
// END
return
}
func NewMemberInfoFromToken(token *XLRegMsg_Token) (
m *xcl.MemberInfo, err error) {
var (
ck, sk *rsa.PublicKey
ctor xt.ConnectorI
ctors []xt.ConnectorI
farEnd xt.EndPointI
nodeID *xi.NodeID
peer *xn.Peer
)
if token == nil {
err = NilToken
} else {
nodeID, err = xi.New(token.GetID())
if err == nil {
ck, err = xc.RSAPubKeyFromWire(token.GetCommsKey())
if err == nil {
sk, err = xc.RSAPubKeyFromWire(token.GetSigKey())
if err == nil {
attrs := token.GetAttrs()
myEnds := token.GetMyEnds()
for i := 0; i < len(myEnds); i++ {
myEnd := myEnds[i]
farEnd, err = xt.NewTcpEndPoint(myEnd)
if err != nil {
break
}
ctor, err = xt.NewTcpConnector(farEnd)
if err != nil {
break
}
ctors = append(ctors, ctor)
}
if err == nil {
peer, err = xn.NewPeer(token.GetName(), nodeID,
ck, sk, nil, ctors)
if err == nil {
m = &xcl.MemberInfo{
Attrs: attrs,
Peer: peer,
}
}
}
}
//if err == nil {
// m, err = NewMemberInfo(token.GetName(), nodeID,
// ck, sk, token.GetAttrs(), token.GetMyEnds())
//}
}
}
}
return
}
func (s *XLSuite) TestChunks(c *C) {
rng := xr.MakeSimpleRNG()
ndx := uint32(rng.Int31())
datum, err := xi.New(nil)
c.Assert(err, IsNil)
dataLen := 1 + rng.Intn(256*256) // 1 .. 2^16
data := make([]byte, dataLen)
rng.NextBytes(data)
ch, err := NewChunk(datum, ndx, data)
c.Assert(err, IsNil)
c.Assert(ch, NotNil)
// field checks: magic, type, reserved
c.Assert(ch.Magic(), Equals, byte(0))
c.Assert(ch.Type(), Equals, byte(0))
expectedReserved := make([]byte, 6)
c.Assert(bytes.Equal(expectedReserved, ch.Reserved()), Equals, true)
// field checks: length, index, datum (= hash of overall message)
c.Assert(int(ch.GetDataLen()), Equals, dataLen)
c.Assert(ch.GetIndex(), Equals, ndx)
actualDatum := ch.GetDatum()
c.Assert(actualDatum, NotNil)
// DEBUG
//fmt.Printf("actualDatum: %x\n", actualDatum)
//fmt.Printf("datum: %x\n", datum.Value())
// END
c.Assert(bytes.Equal(actualDatum, datum.Value()), Equals, true)
// field checks: data, chunk hash
// DEBUG
//fmt.Printf("data: %x\n", data)
//fmt.Printf("from chunk: %x\n", ch.GetData())
// END
c.Assert(bytes.Equal(ch.GetData(), data), Equals, true)
//d := sha3.NewKeccak256()
d := sha1.New()
d.Write(ch.packet[0 : len(ch.packet)-HASH_BYTES])
hash := d.Sum(nil)
// DEBUG
//fmt.Printf("TestChunks:\n hash in chunk %x\n calculated %x\n",
// ch.GetChunkHash(), hash)
// END
c.Assert(bytes.Equal(ch.GetChunkHash(), hash), Equals, true)
}
func NewClientInfoFromToken(token *XLRegMsg_Token) (
m *ClientInfo, err error) {
var nodeID *xi.NodeID
if token == nil {
err = NilToken
} else {
nodeID, err = xi.New(token.GetID())
if err == nil {
ck, err := xc.RSAPubKeyFromWire(token.GetCommsKey())
if err == nil {
sk, err := xc.RSAPubKeyFromWire(token.GetSigKey())
if err == nil {
m, err = NewClientInfo(token.GetName(), nodeID,
ck, sk, token.GetAttrs(), token.GetMyEnds())
}
}
}
}
return
}
func (mm *MemberMaker) CreateAndReply() (err error) {
var response *XLRegMsg
// Send CREATE MSG ==========================================
op := XLRegMsg_Create
request := &XLRegMsg{
Op: &op,
ClusterName: &mm.ClusterName,
ClusterAttrs: &mm.ClusterAttrs,
ClusterMaxSize: &mm.ClusterMaxSize,
EndPointCount: &mm.EPCount,
}
// SHOULD CHECK FOR TIMEOUT
err = mm.writeMsg(request)
if err == nil {
// Process CREATE REPLY -------------------------------------
// SHOULD CHECK FOR TIMEOUT AND VERIFY THAT IT'S A CREATE REPLY
response, err = mm.readMsg()
if err == io.EOF {
err = nil
}
if err == nil {
op = response.GetOp()
_ = op
if err == nil {
id := response.GetClusterID()
mm.ClusterID, err = xi.New(id)
if err == nil {
mm.ClusterAttrs = response.GetClusterAttrs()
mm.ClusterMaxSize = response.GetClusterMaxSize()
}
}
}
}
return
}
func NewBootstrapper(
// properties of the prospective cluster member
name, lfs string, ckPriv, skPriv *rsa.PrivateKey, attrs uint64,
// reg server properties
serverName string, serverID *xi.NodeID, serverEnd xt.EndPointI,
serverCK, serverSK *rsa.PublicKey,
// cluster attributes
clusterName string, clusterAttrs uint64, clusterID *xi.NodeID,
size, epCount uint32, e []xt.EndPointI) (bs *Bootstrapper, err error) {
// DEBUG
fmt.Printf("NewBootstrapper: name '%s', lfs '%s'\n", name, lfs)
// END
if lfs == "" {
attrs |= xcl.ATTR_EPHEMERAL
}
nodeID, err := xi.New(nil) // ie, make me a NodeID
if err == nil {
node, err := xn.NewNew(name, nodeID, lfs)
if err == nil {
mn, err := NewMemberMaker(node, attrs,
serverName, serverID, serverEnd, serverCK, serverSK,
clusterName, clusterAttrs, clusterID, size, epCount, e)
if err == nil {
bs = &Bootstrapper{
DoneCh: make(chan error),
MemberMaker: *mn,
}
}
}
}
return
}
func doCreateMsg(h *InHandler) {
var err error
defer func() {
h.errOut = err
}()
// Examine incoming message -------------------------------------
var (
clusterID *xi.NodeID
index int
)
createMsg := h.msgIn
clusterName := createMsg.GetClusterName()
clusterAttrs := createMsg.GetClusterAttrs()
clusterMaxSize := createMsg.GetClusterMaxSize()
endPointCount := createMsg.GetEndPointCount()
// Take appropriate action --------------------------------------
// Determine whether the cluster exists. If it does, we will just
// use its existing properties.
h.reg.mu.RLock()
cluster, exists := h.reg.ClustersByName[clusterName]
h.reg.mu.RUnlock()
if exists {
h.reg.Logger.Printf("doCreateMsg: cluster %s already exists\n", clusterName)
clusterMaxSize = cluster.maxSize
clusterAttrs = cluster.Attrs
endPointCount = cluster.epCount
if cluster.ID == nil {
h.reg.Logger.Println(" no ID for cluster %s\n", clusterName)
clusterID, _ = xi.New(nil)
} else {
clusterID, _ = xi.New(cluster.ID)
}
// XXX index not assigned
} else {
h.reg.Logger.Printf("doCreateMsg: new cluster %s\n", clusterName)
attrs := uint64(0)
if clusterMaxSize < MIN_CLUSTER_SIZE {
clusterMaxSize = MIN_CLUSTER_SIZE
} else if clusterMaxSize > MAX_CLUSTER_SIZE {
clusterMaxSize = MAX_CLUSTER_SIZE
}
// Assign a quasi-random cluster ID, adding it to the registry
clusterID, err = h.reg.InsertUniqueNodeID()
if err == nil {
cluster, err = NewRegCluster(clusterName, clusterID, attrs,
clusterMaxSize, endPointCount)
h.reg.Logger.Printf("cluster %s assigning ID %x\n",
clusterName, clusterID.Value())
}
if err == nil {
h.cluster = cluster
index, err = h.reg.AddCluster(cluster)
// XXX index not used
}
}
_ = index // INDEX IS NOT BEING USED
if err == nil {
// Prepare reply to client --------------------------------------
op := XLRegMsg_CreateReply
id := clusterID.Value()
h.msgOut = &XLRegMsg{
Op: &op,
ClusterID: id,
ClusterMaxSize: &clusterMaxSize,
ClusterAttrs: &clusterAttrs,
EndPointCount: &endPointCount,
}
// Set exit state -----------------------------------------------
h.exitState = CREATE_REQUEST_RCVD
}
}
func (rc *RegCluster) GetNodeID() (id *xi.NodeID) {
id, _ = xi.New(rc.ID)
return
}
func (s *XLSuite) TestSoloMember(c *C) {
if VERBOSITY > 0 {
fmt.Println("\nTEST_SOLO_CLIENT")
}
rng := xr.MakeSimpleRNG()
// 1. create a new ephemeral server ----------------------------
es, err := NewEphServer()
c.Assert(err, IsNil)
c.Assert(es, NotNil)
server := es.Server
c.Assert(&server.RegNode.ckPriv.PublicKey,
DeepEquals, server.GetCommsPublicKey())
serverName := server.GetName()
serverID := server.GetNodeID()
serverEnd := server.GetEndPoint(0)
serverCK := server.GetCommsPublicKey()
serverSK := server.GetSigPublicKey()
c.Assert(serverEnd, NotNil)
// start the mock server ------------------------------
err = es.Start()
c.Assert(err, IsNil)
// 2. create the solo client ------------------------------------
name := rng.NextFileName(8)
lfs := path.Join("tmp", name)
found, err := xf.PathExists(lfs)
c.Assert(err, IsNil)
for found {
name = rng.NextFileName(8)
lfs = path.Join("tmp", name)
found, err = xf.PathExists(lfs)
c.Assert(err, IsNil)
}
ep, err := xt.NewTcpEndPoint("127.0.0.1:0")
c.Assert(err, IsNil)
e := []xt.EndPointI{ep}
nodeID, err := xi.New(nil)
c.Assert(err, IsNil)
node, err := xn.NewNew(name, nodeID, lfs)
c.Assert(err, IsNil)
sc, err := NewSoloMember(node, serverName, serverID, serverEnd,
serverCK, serverSK, e)
c.Assert(err, IsNil)
c.Assert(sc, NotNil)
// 3. run the client
sc.Start()
err = <-sc.DoneCh
// 4. verify that the client LFS exists and is correct ---------
found, err = xf.PathExists(lfs)
c.Assert(err, IsNil)
c.Assert(found, Equals, true)
// 5. shut down the client -------------------------------------
sc.CloseAcc() // should close any acceptors
// 6. stop the server, closing its acceptor --------------------
es.Stop()
}
func doClientMsg(h *InHandler) {
var err error
defer func() {
h.errOut = err
}()
// DEBUG
regName := h.reg.GetName()
h.reg.Logger.Printf("doClientMsg: regName is %s\n", regName)
// END
// Examine incoming message -------------------------------------
var (
name string
attrs uint64
nodeID *xi.NodeID
ck, sk *rsa.PublicKey
myEnds []string
hash []byte
cm *ClientInfo
)
// XXX We should accept EITHER clientName + token OR clientID
// This implementation only accepts a token.
clientMsg := h.msgIn
clientSpecs := clientMsg.GetMemberSpecs()
name = clientSpecs.GetName()
attrs = clientSpecs.GetAttrs()
ckBytes := clientSpecs.GetCommsKey()
skBytes := clientSpecs.GetSigKey()
digSig := clientSpecs.GetDigSig()
ck, err = xc.RSAPubKeyFromWire(ckBytes)
if err == nil {
sk, err = xc.RSAPubKeyFromWire(skBytes)
if err == nil {
myEnds = clientSpecs.GetMyEnds() // a string array
}
}
if err == nil {
// calculate hash over fields in canonical order XXX EXCLUDING ID
aBytes := make([]byte, 8)
binary.LittleEndian.PutUint64(aBytes, attrs)
d := sha1.New()
d.Write([]byte(name))
d.Write(aBytes)
d.Write(ckBytes)
d.Write(skBytes)
for i := 0; i < len(myEnds); i++ {
d.Write([]byte(myEnds[i]))
}
hash = d.Sum(nil)
// verify the digital signature
err = rsa.VerifyPKCS1v15(sk, crypto.SHA1, hash, digSig)
}
if err == nil {
id := clientSpecs.GetID()
// DEBUG
if id == nil {
h.reg.Logger.Println(" doClientMsg: id from Specs is NIL")
} else {
h.reg.Logger.Printf(" doClientMsg: id from Specs is %x\n", id)
}
// END
if id == nil {
nodeID, err = h.reg.InsertUniqueNodeID()
// DEBUG
h.reg.Logger.Printf(" doClientMsg: inserting %x returned %v\n", id, err)
// END
if err == nil {
id := nodeID.Value()
// this is echoed to the console
h.reg.Logger.Printf("doClientMsg: assigning new MemberID %xi, user %s",
id, name)
}
} else {
// must be known to the registry
nodeID, err = xi.New(id)
if err == nil {
var found bool
found, err = h.reg.ContainsID(nodeID)
if err == nil && !found {
err = h.reg.InsertID(nodeID)
}
}
}
}
// Take appropriate action --------------------------------------
if err == nil || err == IDAlreadyInUse {
// The appropriate action is to hang a token for this client off
// the InHandler.
cm, err = NewClientInfo(name, nodeID, ck, sk, attrs, myEnds)
if err == nil {
h.thisClient = cm
}
}
if err == nil {
// Prepare reply to client --------------------------------------
// In this implementation We simply accept the client's proposed
// attrs and ID.
op := XLRegMsg_MemberOK
h.msgOut = &XLRegMsg{
Op: &op,
MemberID: nodeID.Value(),
MemberAttrs: &attrs, // in production, review and limit
}
// Set exit state -----------------------------------------------
h.exitState = CLIENT_DETAILS_RCVD
}
}
func (s *XLSuite) TestPortlandRegCred(c *C) {
if VERBOSITY > 0 {
fmt.Println("\nTEST_PORTLAND_REG_CRED")
}
rng := xr.MakeSimpleRNG()
_ = rng
// read our local copy of the reg cred
rcData, err := ioutil.ReadFile("portlandRegCred.dat")
c.Assert(err, IsNil)
rc, err := ParseRegCred(string(rcData))
c.Assert(err, IsNil)
c.Assert(rc, NotNil)
// DEBUG
fmt.Println("portlandRegCred_test PORTLAND - A PUZZLE")
// END
// set up the client --------------------------------------------
name := rng.NextFileName(8)
lfs := path.Join("tmp", name)
found, err := xf.PathExists(lfs)
c.Assert(err, IsNil)
for found {
name = rng.NextFileName(8)
lfs = path.Join("tmp", name)
found, err = xf.PathExists(lfs)
c.Assert(err, IsNil)
}
ep, err := xt.NewTcpEndPoint("127.0.0.1:0")
c.Assert(err, IsNil)
e := []xt.EndPointI{ep}
c.Assert(e, NotNil)
nodeID, err := xi.New(nil)
c.Assert(err, IsNil)
node, err := xn.NewNew(name, nodeID, lfs)
c.Assert(err, IsNil)
// DEBUG
fmt.Printf("Portland client is at %v; lfs is %s\n",
e, lfs)
// END
// set up its relationship to the server ------------------------
serverName := rc.Name
serverID := rc.ID
serverEnd := rc.EndPoints
c.Assert(serverEnd, NotNil)
c.Assert(len(serverEnd) > 0, Equals, true)
c.Assert(serverEnd[0], NotNil)
// XXX TOO RIGID
c.Assert(serverEnd[0].String(), Equals, "TcpEndPoint: 54.186.197.123:56789")
// END
serverCK := rc.CommsPubKey
serverSK := rc.SigPubKey
sc, err := NewSoloMember(node, serverName, serverID, serverEnd[0],
serverCK, serverSK, e)
c.Assert(err, IsNil)
c.Assert(sc, NotNil)
// DEBUG
fmt.Println("SoloMember CREATED")
// END
// 3. run the client
sc.Start()
err = <-sc.DoneCh
// 4. verify that the client LFS exists and is correct ---------
found, err = xf.PathExists(lfs)
c.Assert(err, IsNil)
c.Assert(found, Equals, true)
// 5. shut down the client -------------------------------------
sc.CloseAcc() // should close any acceptors
}
func ParseRegCred(s string) (rc *RegCred, err error) {
var (
line string
parts []string
name string
nodeID *xi.NodeID
ck, sk *rsa.PublicKey
e []xt.EndPointI
version xu.DecimalVersion
)
ss := strings.Split(s, "\n")
line, err = xc.NextNBLine(&ss)
if (err == nil) && (line != "regCred {") {
err = IllFormedRegCred
}
if err == nil {
line, err = xc.NextNBLine(&ss)
if err == nil {
parts = strings.Split(line, ": ")
if len(parts) == 2 && parts[0] == "Name" {
name = strings.TrimLeft(parts[1], " \t")
} else {
err = IllFormedRegCred
}
}
}
if err == nil {
var id []byte
line, err = xc.NextNBLine(&ss)
if err == nil {
parts = strings.Split(line, ": ")
if len(parts) == 2 && parts[0] == "ID" {
id, err = hex.DecodeString(parts[1])
} else {
err = IllFormedRegCred
}
}
if err == nil {
nodeID, err = xi.New(id)
}
}
if err == nil {
line, err = xc.NextNBLine(&ss)
if err == nil {
parts = strings.Split(line, ": ")
if len(parts) == 2 && parts[0] == "CommsPubKey" {
ck, err = xc.RSAPubKeyFromDisk([]byte(parts[1]))
} else {
err = IllFormedRegCred
}
}
}
if err == nil {
line, err = xc.NextNBLine(&ss)
if err == nil {
parts = strings.Split(line, ": ")
if len(parts) == 2 && parts[0] == "SigPubKey" {
sk, err = xc.RSAPubKeyFromDisk([]byte(parts[1]))
} else {
err = IllFormedRegCred
}
}
}
if err == nil {
line, err = xc.NextNBLine(&ss)
if err == nil {
// collect EndPoints section; this should be turned into a
// utility function
if line == "EndPoints {" {
for err == nil {
line = strings.TrimSpace(ss[0]) // peek
if line == "}" {
break
}
line, err = xc.NextNBLine(&ss)
if err == nil {
line = strings.TrimSpace(line)
parts := strings.Split(line, ": ")
if len(parts) != 2 || parts[0] != "TcpEndPoint" {
err = IllFormedRegCred
} else {
var ep xt.EndPointI
ep, err = xt.NewTcpEndPoint(parts[1])
if err == nil {
e = append(e, ep)
}
}
}
}
if err == nil {
line, err = xc.NextNBLine(&ss)
if (err == nil) && (line != "}") {
err = MissingClosingBrace
}
}
} else {
err = MissingEndPointsSection
}
}
}
if err == nil {
line, err = xc.NextNBLine(&ss)
if err == nil {
parts = strings.Split(line, ": ")
if len(parts) == 2 && parts[0] == "Version" {
version, err = xu.ParseDecimalVersion(parts[1])
} else {
err = IllFormedRegCred
}
}
}
if err == nil {
rc = &RegCred{
Name: name,
ID: nodeID,
CommsPubKey: ck,
SigPubKey: sk,
EndPoints: e,
Version: version,
}
}
return
}
func ParseRegClusterFromStrings(ss []string) (
rc *RegCluster, rest []string, err error) {
var (
attrs uint64
name string
id *xi.NodeID
epCount, maxSize uint32
)
rest = ss
var line string
line, err = xc.NextNBLine(&rest) // the line is trimmed
if err == nil {
if line != "regCluster {" {
fmt.Println("MISSING regCluster {")
err = IllFormedCluster
} else {
line, err = xc.NextNBLine(&rest)
if err == nil {
if strings.HasPrefix(line, "Attrs: ") {
var i int64
i, err = strconv.ParseInt(line[7:], 0, 64)
if err == nil {
attrs = uint64(i)
}
} else {
fmt.Printf("BAD ATTRS in line '%s'", line)
err = IllFormedCluster
}
}
}
}
if err == nil {
line, err = xc.NextNBLine(&rest)
if err == nil {
if strings.HasPrefix(line, "Name: ") {
name = line[6:]
} else {
fmt.Printf("BAD NAME in line '%s'", line)
err = IllFormedCluster
}
}
}
if err == nil {
// collect ID
line, err = xc.NextNBLine(&rest)
if err == nil {
if strings.HasPrefix(line, "ID: ") {
var val []byte
val, err = hex.DecodeString(line[4:])
if err == nil {
id, err = xi.New(val)
}
} else {
fmt.Println("BAD ID")
err = IllFormedCluster
}
}
}
if err == nil {
line, err = xc.NextNBLine(&rest)
if err == nil {
if strings.HasPrefix(line, "epCount: ") {
var count int
count, err = strconv.Atoi(line[9:])
if err == nil {
epCount = uint32(count)
}
} else {
fmt.Println("BAD END POINT COUNT")
err = IllFormedCluster
}
}
}
if err == nil {
line, err = xc.NextNBLine(&rest)
if err == nil {
if strings.HasPrefix(line, "maxSize: ") {
var size int
size, err = strconv.Atoi(line[9:])
if err == nil {
maxSize = uint32(size)
}
} else {
fmt.Println("BAD MAX_SIZE")
err = IllFormedCluster
}
}
}
if err == nil {
rc, err = NewRegCluster(name, id, attrs, maxSize, epCount)
}
if err == nil {
line, err = xc.NextNBLine(&rest)
if err == nil {
if line == "Members {" {
for {
line = strings.TrimSpace(rest[0]) // peek
if line == "}" {
break
}
var member *ClientInfo
member, rest, err = ParseClientInfoFromStrings(rest)
if err != nil {
break
}
err = rc.AddMember(member)
if err != nil {
break
}
}
} else {
err = MissingMembersList
}
}
}
// expect closing brace for Members list
if err == nil {
line, err = xc.NextNBLine(&rest)
if err == nil {
if line != "}" {
err = MissingClosingBrace
}
}
}
// expect closing brace for cluster
if err == nil {
line, err = xc.NextNBLine(&rest)
if err == nil {
if line != "}" {
err = MissingClosingBrace
}
}
}
return
}
func setup(opt *reg.RegOptions) (rs *reg.RegServer, err error) {
// If LFS/.xlattice/reg.config exists, we load that. Otherwise we
// create a node. In either case we force the node to listen on
// the designated port
var (
e []xt.EndPointI
node *xn.Node
pathToConfigFile string
rn *reg.RegNode
ckPriv, skPriv *rsa.PrivateKey
)
logger := opt.Logger
verbose := opt.Verbose
greetings := fmt.Sprintf("xlReg v%s %s start run\n",
reg.VERSION, reg.VERSION_DATE)
if verbose {
fmt.Print(greetings)
}
logger.Print(greetings)
pathToConfigFile = path.Join(path.Join(opt.Lfs, ".xlattice"), "reg.config")
found, err := xf.PathExists(pathToConfigFile)
if err == nil {
if found {
logger.Printf("Loading existing reg config from %s\n",
pathToConfigFile)
// The registry node already exists. Parse it and we are done.
var data []byte
data, err = ioutil.ReadFile(pathToConfigFile)
if err == nil {
rn, _, err = reg.ParseRegNode(string(data))
}
} else {
logger.Println("No config file found, creating new registry.")
// We need to create a registry node from scratch.
nodeID, _ := xi.New(nil)
ep, err := xt.NewTcpEndPoint(opt.Address + ":" + opt.Port)
if err == nil {
e = []xt.EndPointI{ep}
ckPriv, err = rsa.GenerateKey(rand.Reader, 2048)
if err == nil {
skPriv, err = rsa.GenerateKey(rand.Reader, 2048)
}
if err == nil {
node, err = xn.New("xlReg", nodeID, opt.Lfs, ckPriv, skPriv,
nil, e, nil)
if err == nil {
node.OpenAcc() // XXX needs a complementary close
if err == nil {
// DEBUG
fmt.Printf("XLattice node successfully created\n")
fmt.Printf(" listening on %s\n", ep.String())
// END
rn, err = reg.NewRegNode(node, ckPriv, skPriv)
if err == nil {
// DEBUG
fmt.Printf("regNode successfully created\n")
// END
err = xf.MkdirsToFile(pathToConfigFile, 0700)
if err == nil {
err = ioutil.WriteFile(pathToConfigFile,
[]byte(rn.String()), 0400)
// DEBUG
} else {
fmt.Printf("error writing config file: %v\n",
err.Error())
}
// END --------------
// DEBUG
} else {
fmt.Printf("error creating regNode: %v\n",
err.Error())
// END
}
}
}
}
}
}
}
if err == nil {
var r *reg.Registry
r, err = reg.NewRegistry(nil, // nil = clusters so far
rn, opt) // regNode, options
if err == nil {
logger.Printf("Registry name: %s\n", rn.GetName())
logger.Printf(" ID: %s\n", rn.GetNodeID().String())
}
if err == nil {
var verbosity int
if opt.Verbose {
verbosity++
}
rs, err = reg.NewRegServer(r, opt.Testing, verbosity)
}
}
if err != nil {
logger.Printf("ERROR: %s\n", err.Error())
}
return
}
func NewEphServer() (ms *EphServer, err error) {
// Create an XLattice node with quasi-random parameters including
// low-quality keys and an endPoint in 127.0.0.1, localhost.
var (
ckPriv, skPriv *rsa.PrivateKey
rn *RegNode
ep *xt.TcpEndPoint
node *xn.Node
reg *Registry
server *RegServer
)
rng := xr.MakeSimpleRNG()
name := rng.NextFileName(16)
idBuf := make([]byte, xu.SHA1_BIN_LEN)
rng.NextBytes(idBuf)
lfs := "tmp/" + hex.EncodeToString(idBuf)
id, err := xi.New(nil)
if err == nil {
// XXX cheap keys, too weak for any serious use
ckPriv, err = rsa.GenerateKey(rand.Reader, 1024)
if err == nil {
skPriv, err = rsa.GenerateKey(rand.Reader, 1024)
}
}
if err == nil {
ep, err = xt.NewTcpEndPoint("127.0.0.1:0")
eps := []xt.EndPointI{ep}
if err == nil {
node, err = xn.New(name, id, lfs, ckPriv, skPriv, nil, eps, nil)
if err == nil {
err = node.OpenAcc() // so acceptors are now live
if err == nil {
rn, err = NewRegNode(node, ckPriv, skPriv)
if err == nil {
// DEBUG
if rn == nil {
fmt.Println("regNode is NIL!\n")
} else {
fmt.Printf("eph server listening on %s\n",
rn.GetAcceptor(0).String())
}
// END
// a registry with no clusters and no logger
opt := &RegOptions{
EndPoint: ep, // not used
Ephemeral: true,
GlobalEndPoint: node.GetEndPoint(0),
Lfs: lfs, // redundant (is in node's BaseNode)
Logger: nil,
K: DEFAULT_K,
M: DEFAULT_M,
}
reg, err = NewRegistry(nil, rn, opt)
if err == nil {
server, err = NewRegServer(reg, true, 1)
if err == nil {
ms = &EphServer{
acc: rn.GetAcceptor(0),
Server: server,
}
}
}
}
}
}
}
}
return
}
