/
Dust.go
197 lines (156 loc) · 4.23 KB
/
Dust.go
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package Dust
/*
* Copyright (c) 2019, Operator Foundation
*
*/
// Package Dust provides a PT 2.1 Go API wrapper around the Dust transport
import (
"fmt"
"golang.org/x/net/proxy"
"net"
"time"
"github.com/OperatorFoundation/shapeshifter-ipc"
"github.com/blanu/Dust/go/v2/interface"
)
type dustClient struct {
serverPubkey *Dust.ServerPublic
dialer proxy.Dialer
}
type dustServer struct {
serverPrivkey *Dust.ServerPrivate
dialer proxy.Dialer
}
func NewDustClient(serverPublic string, dialer proxy.Dialer) *dustClient {
unparsed := make(map[string]string)
unparsed["p"]=serverPublic
spub, err := Dust.ParseServerPublic(unparsed)
if err != nil {
return nil
}
return &dustClient{serverPubkey: spub, dialer: dialer}
}
func NewDustServer(idPath string) *dustServer {
spriv, err := Dust.LoadServerPrivateFile(idPath)
if err != nil {
return nil
}
return &dustServer{serverPrivkey: spriv}
}
type dustTransportListener struct {
listener *net.TCPListener
transport *dustServer
}
//begin optimizer code
type Transport struct {
ServerPublic string
Address string
Dialer proxy.Dialer
}
type Config struct {
ServerPublic string
}
func (transport Transport) Dial() (net.Conn, error) {
dustTransport := NewDustClient(transport.ServerPublic, transport.Dialer)
conn, err := dustTransport.Dial(transport.Address)
if err != nil {
return nil, err
} else {
return conn, nil
}
}
//end optimizer code
func newDustTransportListener(listener *net.TCPListener, transport *dustServer) *dustTransportListener {
return &dustTransportListener{listener: listener, transport: transport}
}
// Create outgoing transport connection
func (transport *dustClient) Dial(address string) (net.Conn, error) {
conn, dialErr := net.Dial("tcp", address)
if dialErr != nil {
return conn, dialErr
}
transportConn, err := Dust.BeginRawStreamClient(conn, transport.serverPubkey)
if err != nil {
conn.Close()
return conn, dialErr
}
return transportConn, err
}
// Create listener for incoming transport connection
func (transport *dustServer) Listen(address string) net.Listener {
addr, resolveErr := pt.ResolveAddr(address)
if resolveErr != nil {
fmt.Println(resolveErr.Error())
return nil
}
ln, err := net.ListenTCP("tcp", addr)
if err != nil {
fmt.Println(err.Error())
return nil
}
return newDustTransportListener(ln, transport)
}
func (listener *dustTransportListener) Addr() net.Addr {
interfaces, _ := net.Interfaces()
addrs, _ := interfaces[0].Addrs()
return addrs[0]
}
// Accept waits for and returns the next connection to the listener.
func (listener *dustTransportListener) Accept() (net.Conn, error) {
conn, err := listener.listener.Accept()
if err != nil {
return nil, err
}
ssconn, streamerr := Dust.BeginRawStreamServer(conn, listener.transport.serverPrivkey)
if streamerr != nil {
return nil, streamerr
}
dsconn, dserr := newDustServerConn(ssconn)
if dserr != nil {
return nil, dserr
}
return dsconn, nil
}
// Close closes the transport listener.
// Any blocked Accept operations will be unblocked and return errors.
func (listener *dustTransportListener) Close() error {
return listener.listener.Close()
}
type dustConn struct {
conn *Dust.RawStreamConn
}
func (sconn *dustConn) Read(b []byte) (int, error) {
return sconn.conn.Read(b)
}
func (sconn *dustConn) Write(b []byte) (int, error) {
return sconn.conn.Write(b)
}
func (sconn *dustConn) Close() error {
return sconn.conn.Close()
}
func (sconn *dustConn) LocalAddr() net.Addr {
return sconn.conn.LocalAddr()
}
func (sconn *dustConn) RemoteAddr() net.Addr {
return sconn.conn.RemoteAddr()
}
func (sconn *dustConn) SetDeadline(t time.Time) error {
return sconn.conn.SetDeadline(t)
}
func (sconn *dustConn) SetReadDeadline(t time.Time) error {
return sconn.conn.SetReadDeadline(t)
}
func (sconn *dustConn) SetWriteDeadline(t time.Time) error {
return sconn.conn.SetWriteDeadline(t)
}
func newDustClientConn(conn *Dust.RawStreamConn) (c *dustConn, err error) {
// Initialize a client connection.
c = &dustConn{conn}
return
}
func newDustServerConn(conn *Dust.RawStreamConn) (c *dustConn, err error) {
// Initialize a server connection.
c = &dustConn{conn}
return
}
var _ net.Listener = (*dustTransportListener)(nil)
var _ net.Conn = (*dustConn)(nil)