/
masterclient.go
149 lines (138 loc) · 3.37 KB
/
masterclient.go
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// masterclient.go
package main
import (
"fmt"
"io"
"kirisurf-legacy/ll/circuitry"
"kirisurf-legacy/ll/dirclient"
"kirisurf-legacy/ll/intercom"
"kirisurf-legacy/ll/socks5"
"net"
"sync"
"time"
"github.com/KirisurfProject/kilog"
)
var circ_ch chan intercom.MultiplexClient
func produce_circ() intercom.MultiplexClient {
xaxa := dirclient.FindExitPath(MasterConfig.Network.MinCircuitLen)
lel, err := circuitry.BuildCircuit(xaxa, 254)
if err != nil {
dirclient.RefreshDirectory()
time.Sleep(time.Second)
return produce_circ()
}
return intercom.MakeMultiplexClient(lel)
}
func run_client_loop() {
listener, err := net.Listen("tcp", MasterConfig.General.SocksAddr)
if err != nil {
panic(err)
}
circ_ch <- produce_circ()
set_gui_progress(1.0)
kilog.Info("Bootstrapping 100%%: client started!")
go func() {
var haha sync.WaitGroup
haha.Add(5)
for i := 0; i < 5; i++ {
go func() {
circ_ch <- produce_circ()
haha.Done()
}()
}
haha.Wait()
}()
for {
nconn, err := listener.Accept()
if err != nil {
kilog.Warning("Problem while accepting client socket: %s", err.Error())
continue
}
go func() {
defer func() {
nconn.Close()
}()
addr, err := socks5.ReadRequest(nconn)
if err != nil {
kilog.Warning("Problem while reading SOCKS5 request")
return
}
kilog.Debug("Attempting connection to %s...", addr)
retry:
newcirc := <-circ_ch
remote, err := newcirc.SocksAccept(nconn)
if err != nil {
dirclient.RefreshDirectory()
circ_ch <- produce_circ()
goto retry
}
circ_ch <- newcirc
defer remote.Close()
lenbts := []byte{byte((len(addr) + 1) % 256), byte((len(addr) + 1) / 256)}
_, err = remote.Write(lenbts)
_, err = remote.Write([]byte(fmt.Sprintf("t%s", addr)))
if err != nil {
kilog.Debug("Failed to send tunnelling request to %s!", addr)
socks5.CompleteRequest(0x03, nconn)
return
}
kilog.Debug("Sent tunneling request")
code := make([]byte, 4)
_, err = io.ReadFull(remote, code)
if err != nil {
kilog.Debug("Failed to read response for %s! (%s)", addr, err)
socks5.CompleteRequest(0x03, nconn)
return
}
switch string(code) {
case "OKAY":
kilog.Debug("Successfully tunneled %s!", addr)
socks5.CompleteRequest(0x00, nconn)
go func() {
defer remote.Close()
io.Copy(remote, nconn)
}()
io.Copy(nconn, remote)
case "TMOT":
kilog.Debug("Tunnel to %s timed out!", addr)
socks5.CompleteRequest(0x06, nconn)
case "NOIM":
kilog.Debug("Tunnel type for %s isn't implemented by server!", addr)
socks5.CompleteRequest(0x07, nconn)
case "FAIL":
kilog.Debug("Tunnel to %s cannot be established!", addr)
socks5.CompleteRequest(0x04, nconn)
default:
kilog.Debug("Protocol error on tunnel to %s! (%s)", addr, string(code))
socks5.CompleteRequest(0x01, nconn)
return
}
}()
}
}
func run_diagnostic_loop() {
listener, err := net.Listen("tcp", "127.0.0.1:9222")
if err != nil {
panic(err)
}
for {
nconn, err := listener.Accept()
if err != nil {
kilog.Warning("Problem while accepting stacktrace diag socket: %s", err.Error())
continue
}
go func() {
defer nconn.Close()
for {
str := <-kilog.FineChannel
_, err := nconn.Write([]byte(fmt.Sprintf("%s\n", str)))
if err != nil {
return
}
}
}()
}
}
func init() {
circ_ch = make(chan intercom.MultiplexClient, 8)
}