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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,232 @@ | ||
| package Dust | ||
|
|
||
| /* | ||
| MIT License | ||
| Copyright (c) 2020 Operator Foundation | ||
| Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| of this software and associated documentation files (the "Software"), to deal | ||
| in the Software without restriction, including without limitation the rights | ||
| to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| copies of the Software, and to permit persons to whom the Software is | ||
| furnished to do so, subject to the following conditions: | ||
| The above copyright notice and this permission notice shall be included in all | ||
| copies or substantial portions of the Software. | ||
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| SOFTWARE. | ||
| */ | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "github.com/kataras/golog" | ||
| "golang.org/x/net/proxy" | ||
| "net" | ||
| "time" | ||
|
|
||
| "github.com/OperatorFoundation/shapeshifter-ipc/v2" | ||
| "github.com/blanu/Dust/go/v2/interface" | ||
| ) | ||
|
|
||
| type dustClient struct { | ||
| serverPubkey *Dust.ServerPublic | ||
| dialer proxy.Dialer | ||
| Address string `json:"address"` | ||
| } | ||
|
|
||
| type dustServer struct { | ||
| serverPrivkey *Dust.ServerPrivate | ||
| dialer proxy.Dialer | ||
| } | ||
|
|
||
| func NewDustClient(serverPublic string, dialer proxy.Dialer, address string) *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, Address: address} | ||
| } | ||
|
|
||
| type dustTransportListener struct { | ||
| listener *net.TCPListener | ||
| transport *dustServer | ||
| } | ||
|
|
||
| //begin optimizer code | ||
| type Transport struct { | ||
| ServerPublic string | ||
| Address string | ||
| Dialer proxy.Dialer | ||
| ServerConfig *dustServer | ||
| } | ||
|
|
||
| type Config struct { | ||
| ServerPublic string `json:"server-public"` | ||
| Address string `json:"address"` | ||
| } | ||
|
|
||
| func New(serverPublic string, address string, dialer proxy.Dialer, serverConfig *dustServer) Transport { | ||
| return Transport{ | ||
| ServerPublic: serverPublic, | ||
| Address: address, | ||
| Dialer: dialer, | ||
| ServerConfig: serverConfig, | ||
| } | ||
| } | ||
|
|
||
| func (transport Transport) Dial() (net.Conn, error) { | ||
| dustTransport := NewDustClient(transport.ServerPublic, transport.Dialer, transport.Address) | ||
| conn, err := dustTransport.Dial(transport.Address) | ||
| if err != nil { | ||
| return nil, err | ||
| } else { | ||
| return conn, nil | ||
| } | ||
| } | ||
|
|
||
| func (transport Transport) Listen() (net.Listener, error) { | ||
| addr, resolveErr := pt.ResolveAddr(transport.Address) | ||
| if resolveErr != nil { | ||
| fmt.Println(resolveErr.Error()) | ||
| return nil, resolveErr | ||
| } | ||
|
|
||
| ln, err := net.ListenTCP("tcp", addr) | ||
| if err != nil { | ||
| fmt.Println(err.Error()) | ||
| return nil, err | ||
| } | ||
|
|
||
| return newDustTransportListener(ln, transport.ServerConfig), 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 { | ||
| closeErr := conn.Close() | ||
| if closeErr != nil { | ||
| golog.Error("could not close") | ||
| } | ||
| return conn, dialErr | ||
| } | ||
|
|
||
| return transportConn, err | ||
| } | ||
|
|
||
| // Create listener for incoming transport connection | ||
| func (transport *dustServer) Listen(address string) (net.Listener, error) { | ||
| addr, resolveErr := pt.ResolveAddr(address) | ||
| if resolveErr != nil { | ||
| fmt.Println(resolveErr.Error()) | ||
| return nil, resolveErr | ||
| } | ||
|
|
||
| ln, err := net.ListenTCP("tcp", addr) | ||
| if err != nil { | ||
| fmt.Println(err.Error()) | ||
| return nil, err | ||
| } | ||
|
|
||
| return newDustTransportListener(ln, transport), nil | ||
| } | ||
|
|
||
| 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 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) |
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