Exemplo n.º 1
0
// readHostFile will read the host file
// HOSTNAME PUBLICKEY
// for each line. and returns the whole set and any errror if any are found.
func readHostFile(file string) ([]string, []string, error) {
	// open it up
	hostFile, err := os.Open(file)
	if err != nil {
		return nil, nil, err
	}

	// Then read it up
	hosts := make([]string, 0)
	pubs := make([]string, 0)
	scanner := bufio.NewScanner(hostFile)
	ln := 0
	for scanner.Scan() {
		line := scanner.Text()
		ln += 1
		spl := strings.Split(line, " ")
		if len(spl) != 2 {
			return nil, nil, errors.New(fmt.Sprintf("Hostfile misformatted at line %s", ln))
		}
		// add it HOSTS -> PUBLIC KEY
		h, err := cliutils.VerifyPort(spl[0], conode.DefaultPort)
		if err != nil {
			dbg.Fatal("Error reading address in host file:", spl[0], err)
		}
		hosts = append(hosts, h)
		pubs = append(pubs, spl[1])
	}
	dbg.Lvl1("Read the hosts files:", ln, "entries")
	return hosts, pubs, nil
}
Exemplo n.º 2
0
// NewPeer returns a peer that can be used to set up
// connections.
func NewPeer(address string, conf *app.ConfigConode) *Peer {
	suite := app.GetSuite(conf.Suite)

	var err error
	// make sure address has a port or insert default one
	address, err = cliutils.VerifyPort(address, DefaultPort)
	if err != nil {
		dbg.Fatal(err)
	}

	// For retro compatibility issues, convert the base64 encoded key into hex
	// encoded keys....
	convertTree(suite, conf.Tree)
	// Add our private key to the tree (compatibility issues again with graphs/
	// lib)
	addPrivateKey(suite, address, conf)
	// load the configuration
	dbg.Lvl3("loading configuration")
	var hc *graphs.HostConfig
	opts := graphs.ConfigOptions{ConnType: "tcp", Host: address, Suite: suite}
	hc, err = graphs.LoadConfig(conf.Hosts, conf.Tree, suite, opts)
	if err != nil {
		dbg.Fatal(err)
	}

	// Listen to stamp-requests on port 2001
	node := hc.Hosts[address]
	peer := &Peer{
		conf:      conf,
		Node:      node,
		RLock:     sync.Mutex{},
		CloseChan: make(chan bool, 5),
		Hostname:  address,
	}

	// Start the cothority-listener on port 2000
	err = hc.Run(true, sign.MerkleTree, address)
	if err != nil {
		dbg.Fatal(err)
	}

	go func() {
		err := peer.Node.Listen()
		dbg.Lvl3("Node.listen quits with status", err)
		peer.CloseChan <- true
		peer.Close()
	}()
	return peer
}
Exemplo n.º 3
0
// ForceExit connects to the stamp-port of the conode and asks him to exit
func ForceExit(address string) {
	add, err := cliutils.VerifyPort(address, conode.DefaultPort+1)
	if err != nil {
		dbg.Fatal("Couldn't convert", address, "to a IP:PORT")
	}

	conn := coconet.NewTCPConn(add)
	err = conn.Connect()
	if err != nil {
		dbg.Fatal("Error when getting the connection to the host:", err)
	}
	dbg.Lvl1("Connected to", add)
	msg := &conode.TimeStampMessage{
		Type: conode.StampExit,
	}

	dbg.Lvl1("Asking to exit")
	err = conn.PutData(msg)
	if err != nil {
		dbg.Fatal("Couldn't send exit-message to server:", err)
	}
}
Exemplo n.º 4
0
// KeyGeneration will generate a fresh public / private key pair
// and write those down into two separate files
func KeyGeneration(key, address string) {
	if address == "" {
		dbg.Fatal("You must call keygen with ipadress !")
	}
	address, err := cliutils.VerifyPort(address, conode.DefaultPort)
	dbg.Lvl1("Address is", address)
	if err != nil {
		dbg.Fatal(err)
	}
	// gen keypair
	kp := cliutils.KeyPair(suite)
	// Write private
	if err := cliutils.WritePrivKey(suite, namePriv(key), kp.Secret); err != nil {
		dbg.Fatal("Error writing private key file:", err)
	}

	// Write public
	if err := cliutils.WritePubKey(suite, namePub(key), kp.Public, address); err != nil {
		dbg.Fatal("Error writing public key file:", err)
	}

	dbg.Lvl1("Keypair generated and written to", namePriv(key), "/", namePub(key))
}