// TODO: if in tcp mode associate each hostname in the file with a different
// port. Get the remote address of this computer to combine with those for the
// complete hostnames to be used by the hosts.
func LoadJSON(file []byte, optsSlice ...ConfigOptions) (*HostConfig, error) {
opts := ConfigOptions{}
if len(optsSlice) > 0 {
opts = optsSlice[0]
}
hc := NewHostConfig()
var cf ConfigFile
err := json.Unmarshal(file, &cf)
if err != nil {
return hc, err
}
connT := GoC
if cf.Conn == "tcp" {
connT = TcpC
}
// options override file
if opts.ConnType == "tcp" {
connT = TcpC
}
dir := hc.Dir
hosts := make(map[string]coconet.Host)
nameToAddr := make(map[string]string)
if connT == GoC {
for _, h := range cf.Hosts {
if _, ok := hc.Hosts[h]; !ok {
nameToAddr[h] = h
// it doesn't make sense to only make 1 go host
if opts.Faulty == true {
gohost := coconet.NewGoHost(h, dir)
hosts[h] = coconet.NewFaultyHost(gohost)
} else {
hosts[h] = coconet.NewGoHost(h, dir)
}
}
}
} else if connT == TcpC {
localAddr := ""
if opts.GenHosts {
localAddr, err = GetAddress()
if err != nil {
return nil, err
}
}
for i, h := range cf.Hosts {
addr := h
if opts.GenHosts {
p := strconv.Itoa(StartConfigPort)
addr = localAddr + ":" + p
//log.Println("created new host address: ", addr)
StartConfigPort += 10
} else if opts.Port != "" {
log.Println("attempting to rewrite port: ", opts.Port)
// if the port has been specified change the port
hostport := strings.Split(addr, ":")
log.Println(hostport)
if len(hostport) == 2 {
addr = hostport[0] + ":" + opts.Port
}
log.Println(addr)
} else if len(opts.Hostnames) != 0 {
addr = opts.Hostnames[i]
}
nameToAddr[h] = addr
// add to the hosts list if we havent added it before
if _, ok := hc.Hosts[addr]; !ok {
// only create the tcp hosts requested
if opts.Host == "" || opts.Host == addr {
if opts.Faulty == true {
tcpHost := coconet.NewTCPHost(addr)
hosts[addr] = coconet.NewFaultyHost(tcpHost)
} else {
hosts[addr] = coconet.NewTCPHost(addr)
}
} else {
hosts[addr] = nil // it is there but not backed
}
}
}
}
suite := nist.NewAES128SHA256P256()
if opts.Suite != nil {
suite = opts.Suite
}
rand := suite.Cipher([]byte("example"))
fmt.Println("hosts", hosts)
_, err = ConstructTree(cf.Tree, hc, "", suite, rand, hosts, nameToAddr, opts)
if connT != GoC {
hc.Dir = nil
}
log.Println("IN LOAD JSON")
// add a hostlist to each of the signing nodes
var hostList []string
for h := range hosts {
hostList = append(hostList, h)
}
for _, sn := range hc.SNodes {
sn.HostList = make([]string, len(hostList))
sortable := sort.StringSlice(hostList)
sortable.Sort()
copy(sn.HostList, sortable)
// set host list on view 0
log.Println("in config hostlist", sn.HostList)
sn.SetHostList(0, sn.HostList)
}
return hc, err
}
func runStaticTest(signType sign.Type, RoundsPerView int, faultyNodes ...int) error {
// Crypto setup
suite := nist.NewAES128SHA256P256()
rand := suite.Cipher([]byte("example"))
// number of nodes for the test
nNodes := 4
// create new directory for communication between peers
dir := coconet.NewGoDirectory()
// Create Hosts and Peers
h := make([]coconet.Host, nNodes)
for i := 0; i < nNodes; i++ {
hostName := "host" + strconv.Itoa(i)
if len(faultyNodes) > 0 {
h[i] = &coconet.FaultyHost{}
gohost := coconet.NewGoHost(hostName, dir)
h[i] = coconet.NewFaultyHost(gohost)
} else {
h[i] = coconet.NewGoHost(hostName, dir)
}
}
for _, fh := range faultyNodes {
h[fh].(*coconet.FaultyHost).SetDeadFor("response", true)
}
// Create Signing Nodes out of the hosts
nodes := make([]*sign.Node, nNodes)
for i := 0; i < nNodes; i++ {
nodes[i] = sign.NewNode(h[i], suite, rand)
nodes[i].Type = signType
nodes[i].GenSetPool()
nodes[i].RoundsPerView = RoundsPerView
defer nodes[i].Close()
h[i].SetPubKey(nodes[i].PubKey)
// To test the already keyed signing node, uncomment
// PrivKey := suite.Secret().Pick(rand)
// nodes[i] = NewKeyedNode(h[i], suite, PrivKey)
}
nodes[0].Height = 2
nodes[1].Height = 1
nodes[2].Height = 0
nodes[3].Height = 0
// Add edges to parents
h[1].AddParent(DefaultView, h[0].Name())
h[2].AddParent(DefaultView, h[1].Name())
h[3].AddParent(DefaultView, h[1].Name())
// Add edges to children, listen to children
h[0].AddChildren(DefaultView, h[1].Name())
h[1].AddChildren(DefaultView, h[2].Name(), h[3].Name())
for _, host := range h {
host.Listen()
host.Connect(0)
}
for i := 0; i < nNodes; i++ {
if len(faultyNodes) > 0 {
nodes[i].FailureRate = 1
}
go func(i int) {
// start listening for messages from within the tree
nodes[i].Listen()
}(i)
}
// Have root node initiate the signing protocol
// via a simple annoucement
nodes[0].LogTest = []byte("Hello World")
// return nodes[0].Announce(DefaultView, &sign.AnnouncementMessage{LogTest: nodes[0].LogTest, Round: 1})
return nodes[0].StartAnnouncement(&sign.AnnouncementMessage{LogTest: nodes[0].LogTest, Round: 1})
}