mirror of https://github.com/qwqdanchun/nps.git
529 lines
13 KiB
Go
529 lines
13 KiB
Go
package client
|
|
|
|
import (
|
|
"encoding/base64"
|
|
"encoding/binary"
|
|
"errors"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"log"
|
|
"math"
|
|
"math/rand"
|
|
"net"
|
|
"net/http"
|
|
"net/http/httputil"
|
|
"net/url"
|
|
"os"
|
|
"path/filepath"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
|
|
"ehang.io/nps/lib/common"
|
|
"ehang.io/nps/lib/config"
|
|
"ehang.io/nps/lib/conn"
|
|
"ehang.io/nps/lib/crypt"
|
|
"ehang.io/nps/lib/version"
|
|
"github.com/astaxie/beego/logs"
|
|
"github.com/xtaci/kcp-go"
|
|
"golang.org/x/net/proxy"
|
|
)
|
|
|
|
func GetTaskStatus(path string) {
|
|
cnf, err := config.NewConfig(path)
|
|
if err != nil {
|
|
log.Fatalln(err)
|
|
}
|
|
c, err := NewConn(cnf.CommonConfig.Tp, cnf.CommonConfig.VKey, cnf.CommonConfig.Server, common.WORK_CONFIG, cnf.CommonConfig.ProxyUrl)
|
|
if err != nil {
|
|
log.Fatalln(err)
|
|
}
|
|
if _, err := c.Write([]byte(common.WORK_STATUS)); err != nil {
|
|
log.Fatalln(err)
|
|
}
|
|
//read now vKey and write to server
|
|
if f, err := common.ReadAllFromFile(filepath.Join(common.GetTmpPath(), "npc_vkey.txt")); err != nil {
|
|
log.Fatalln(err)
|
|
} else if _, err := c.Write([]byte(crypt.Md5(string(f)))); err != nil {
|
|
log.Fatalln(err)
|
|
}
|
|
var isPub bool
|
|
binary.Read(c, binary.LittleEndian, &isPub)
|
|
if l, err := c.GetLen(); err != nil {
|
|
log.Fatalln(err)
|
|
} else if b, err := c.GetShortContent(l); err != nil {
|
|
log.Fatalln(err)
|
|
} else {
|
|
arr := strings.Split(string(b), common.CONN_DATA_SEQ)
|
|
for _, v := range cnf.Hosts {
|
|
if common.InStrArr(arr, v.Remark) {
|
|
log.Println(v.Remark, "ok")
|
|
} else {
|
|
log.Println(v.Remark, "not running")
|
|
}
|
|
}
|
|
for _, v := range cnf.Tasks {
|
|
ports := common.GetPorts(v.Ports)
|
|
if v.Mode == "secret" {
|
|
ports = append(ports, 0)
|
|
}
|
|
for _, vv := range ports {
|
|
var remark string
|
|
if len(ports) > 1 {
|
|
remark = v.Remark + "_" + strconv.Itoa(vv)
|
|
} else {
|
|
remark = v.Remark
|
|
}
|
|
if common.InStrArr(arr, remark) {
|
|
log.Println(remark, "ok")
|
|
} else {
|
|
log.Println(remark, "not running")
|
|
}
|
|
}
|
|
}
|
|
}
|
|
os.Exit(0)
|
|
}
|
|
|
|
var errAdd = errors.New("The server returned an error, which port or host may have been occupied or not allowed to open.")
|
|
|
|
func StartFromFile(path string) {
|
|
first := true
|
|
cnf, err := config.NewConfig(path)
|
|
if err != nil || cnf.CommonConfig == nil {
|
|
logs.Error("Config file %s loading error %s", path, err.Error())
|
|
os.Exit(0)
|
|
}
|
|
logs.Info("Loading configuration file %s successfully", path)
|
|
|
|
re:
|
|
if first || cnf.CommonConfig.AutoReconnection {
|
|
if !first {
|
|
logs.Info("Reconnecting...")
|
|
time.Sleep(time.Second * 5)
|
|
}
|
|
} else {
|
|
return
|
|
}
|
|
first = false
|
|
c, err := NewConn(cnf.CommonConfig.Tp, cnf.CommonConfig.VKey, cnf.CommonConfig.Server, common.WORK_CONFIG, cnf.CommonConfig.ProxyUrl)
|
|
if err != nil {
|
|
logs.Error(err)
|
|
goto re
|
|
}
|
|
var isPub bool
|
|
binary.Read(c, binary.LittleEndian, &isPub)
|
|
|
|
// get tmp password
|
|
var b []byte
|
|
vkey := cnf.CommonConfig.VKey
|
|
if isPub {
|
|
// send global configuration to server and get status of config setting
|
|
if _, err := c.SendInfo(cnf.CommonConfig.Client, common.NEW_CONF); err != nil {
|
|
logs.Error(err)
|
|
goto re
|
|
}
|
|
if !c.GetAddStatus() {
|
|
logs.Error("the web_user may have been occupied!")
|
|
goto re
|
|
}
|
|
|
|
if b, err = c.GetShortContent(16); err != nil {
|
|
logs.Error(err)
|
|
goto re
|
|
}
|
|
vkey = string(b)
|
|
}
|
|
ioutil.WriteFile(filepath.Join(common.GetTmpPath(), "npc_vkey.txt"), []byte(vkey), 0600)
|
|
|
|
//send hosts to server
|
|
for _, v := range cnf.Hosts {
|
|
if _, err := c.SendInfo(v, common.NEW_HOST); err != nil {
|
|
logs.Error(err)
|
|
goto re
|
|
}
|
|
if !c.GetAddStatus() {
|
|
logs.Error(errAdd, v.Host)
|
|
goto re
|
|
}
|
|
}
|
|
|
|
//send task to server
|
|
for _, v := range cnf.Tasks {
|
|
if _, err := c.SendInfo(v, common.NEW_TASK); err != nil {
|
|
logs.Error(err)
|
|
goto re
|
|
}
|
|
if !c.GetAddStatus() {
|
|
logs.Error(errAdd, v.Ports, v.Remark)
|
|
goto re
|
|
}
|
|
if v.Mode == "file" {
|
|
//start local file server
|
|
go startLocalFileServer(cnf.CommonConfig, v, vkey)
|
|
}
|
|
}
|
|
|
|
//create local server secret or p2p
|
|
for _, v := range cnf.LocalServer {
|
|
go StartLocalServer(v, cnf.CommonConfig)
|
|
}
|
|
|
|
c.Close()
|
|
if cnf.CommonConfig.Client.WebUserName == "" || cnf.CommonConfig.Client.WebPassword == "" {
|
|
logs.Notice("web access login username:user password:%s", vkey)
|
|
} else {
|
|
logs.Notice("web access login username:%s password:%s", cnf.CommonConfig.Client.WebUserName, cnf.CommonConfig.Client.WebPassword)
|
|
}
|
|
NewRPClient(cnf.CommonConfig.Server, vkey, cnf.CommonConfig.Tp, cnf.CommonConfig.ProxyUrl, cnf).Start()
|
|
CloseLocalServer()
|
|
goto re
|
|
}
|
|
|
|
// Create a new connection with the server and verify it
|
|
func NewConn(tp string, vkey string, server string, connType string, proxyUrl string) (*conn.Conn, error) {
|
|
var err error
|
|
var connection net.Conn
|
|
var sess *kcp.UDPSession
|
|
if tp == "tcp" {
|
|
if proxyUrl != "" {
|
|
u, er := url.Parse(proxyUrl)
|
|
if er != nil {
|
|
return nil, er
|
|
}
|
|
switch u.Scheme {
|
|
case "socks5":
|
|
n, er := proxy.FromURL(u, nil)
|
|
if er != nil {
|
|
return nil, er
|
|
}
|
|
connection, err = n.Dial("tcp", server)
|
|
default:
|
|
connection, err = NewHttpProxyConn(u, server)
|
|
}
|
|
} else {
|
|
connection, err = net.Dial("tcp", server)
|
|
}
|
|
} else {
|
|
sess, err = kcp.DialWithOptions(server, nil, 10, 3)
|
|
if err == nil {
|
|
conn.SetUdpSession(sess)
|
|
connection = sess
|
|
}
|
|
}
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
connection.SetDeadline(time.Now().Add(time.Second * 10))
|
|
defer connection.SetDeadline(time.Time{})
|
|
c := conn.NewConn(connection)
|
|
if _, err := c.Write([]byte(common.CONN_TEST)); err != nil {
|
|
return nil, err
|
|
}
|
|
if err := c.WriteLenContent([]byte(version.GetVersion())); err != nil {
|
|
return nil, err
|
|
}
|
|
if err := c.WriteLenContent([]byte(version.VERSION)); err != nil {
|
|
return nil, err
|
|
}
|
|
b, err := c.GetShortContent(32)
|
|
if err != nil {
|
|
logs.Error(err)
|
|
return nil, err
|
|
}
|
|
if crypt.Md5(version.GetVersion()) != string(b) {
|
|
logs.Error("The client does not match the server version. The current core version of the client is", version.GetVersion())
|
|
return nil, err
|
|
}
|
|
if _, err := c.Write([]byte(common.Getverifyval(vkey))); err != nil {
|
|
return nil, err
|
|
}
|
|
if s, err := c.ReadFlag(); err != nil {
|
|
return nil, err
|
|
} else if s == common.VERIFY_EER {
|
|
return nil, errors.New(fmt.Sprintf("Validation key %s incorrect", vkey))
|
|
}
|
|
if _, err := c.Write([]byte(connType)); err != nil {
|
|
return nil, err
|
|
}
|
|
c.SetAlive(tp)
|
|
|
|
return c, nil
|
|
}
|
|
|
|
//http proxy connection
|
|
func NewHttpProxyConn(url *url.URL, remoteAddr string) (net.Conn, error) {
|
|
req := &http.Request{
|
|
Method: "CONNECT",
|
|
URL: url,
|
|
Host: remoteAddr,
|
|
Header: http.Header{},
|
|
Proto: "HTTP/1.1",
|
|
}
|
|
password, _ := url.User.Password()
|
|
req.Header.Set("Authorization", "Basic "+basicAuth(strings.Trim(url.User.Username(), " "), password))
|
|
b, err := httputil.DumpRequest(req, false)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
proxyConn, err := net.Dial("tcp", url.Host)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if _, err := proxyConn.Write(b); err != nil {
|
|
return nil, err
|
|
}
|
|
buf := make([]byte, 1024)
|
|
if _, err := proxyConn.Read(buf); err != nil {
|
|
return nil, err
|
|
}
|
|
return proxyConn, nil
|
|
}
|
|
|
|
//get a basic auth string
|
|
func basicAuth(username, password string) string {
|
|
auth := username + ":" + password
|
|
return base64.StdEncoding.EncodeToString([]byte(auth))
|
|
}
|
|
|
|
func getRemoteAddressFromServer(rAddr string, localConn *net.UDPConn, md5Password, role string, add int) error {
|
|
rAddr, err := getNextAddr(rAddr, add)
|
|
if err != nil {
|
|
logs.Error(err)
|
|
return err
|
|
}
|
|
addr, err := net.ResolveUDPAddr("udp", rAddr)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if _, err := localConn.WriteTo(common.GetWriteStr(md5Password, role), addr); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func handleP2PUdp(localAddr, rAddr, md5Password, role string) (remoteAddress string, c net.PacketConn, err error) {
|
|
localConn, err := newUdpConnByAddr(localAddr)
|
|
if err != nil {
|
|
return
|
|
}
|
|
err = getRemoteAddressFromServer(rAddr, localConn, md5Password, role, 0)
|
|
if err != nil {
|
|
logs.Error(err)
|
|
return
|
|
}
|
|
err = getRemoteAddressFromServer(rAddr, localConn, md5Password, role, 1)
|
|
if err != nil {
|
|
logs.Error(err)
|
|
return
|
|
}
|
|
err = getRemoteAddressFromServer(rAddr, localConn, md5Password, role, 2)
|
|
if err != nil {
|
|
logs.Error(err)
|
|
return
|
|
}
|
|
var remoteAddr1, remoteAddr2, remoteAddr3 string
|
|
for {
|
|
buf := make([]byte, 1024)
|
|
if n, addr, er := localConn.ReadFromUDP(buf); er != nil {
|
|
err = er
|
|
return
|
|
} else {
|
|
rAddr2, _ := getNextAddr(rAddr, 1)
|
|
rAddr3, _ := getNextAddr(rAddr, 2)
|
|
switch addr.String() {
|
|
case rAddr:
|
|
remoteAddr1 = string(buf[:n])
|
|
case rAddr2:
|
|
remoteAddr2 = string(buf[:n])
|
|
case rAddr3:
|
|
remoteAddr3 = string(buf[:n])
|
|
}
|
|
}
|
|
if remoteAddr1 != "" && remoteAddr2 != "" && remoteAddr3 != "" {
|
|
break
|
|
}
|
|
}
|
|
if remoteAddress, err = sendP2PTestMsg(localConn, remoteAddr1, remoteAddr2, remoteAddr3); err != nil {
|
|
return
|
|
}
|
|
c, err = newUdpConnByAddr(localAddr)
|
|
return
|
|
}
|
|
|
|
func sendP2PTestMsg(localConn *net.UDPConn, remoteAddr1, remoteAddr2, remoteAddr3 string) (string, error) {
|
|
logs.Trace(remoteAddr3, remoteAddr2, remoteAddr1)
|
|
defer localConn.Close()
|
|
isClose := false
|
|
defer func() { isClose = true }()
|
|
interval, err := getAddrInterval(remoteAddr1, remoteAddr2, remoteAddr3)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
go func() {
|
|
addr, err := getNextAddr(remoteAddr3, interval)
|
|
if err != nil {
|
|
return
|
|
}
|
|
remoteUdpAddr, err := net.ResolveUDPAddr("udp", addr)
|
|
if err != nil {
|
|
return
|
|
}
|
|
logs.Trace("try send test packet to target %s", addr)
|
|
ticker := time.NewTicker(time.Millisecond * 500)
|
|
defer ticker.Stop()
|
|
for {
|
|
select {
|
|
case <-ticker.C:
|
|
if isClose {
|
|
return
|
|
}
|
|
if _, err := localConn.WriteTo([]byte(common.WORK_P2P_CONNECT), remoteUdpAddr); err != nil {
|
|
return
|
|
}
|
|
}
|
|
}
|
|
}()
|
|
if interval != 0 {
|
|
ip := common.GetIpByAddr(remoteAddr2)
|
|
go func() {
|
|
ports := getRandomPortArr(common.GetPortByAddr(remoteAddr3), common.GetPortByAddr(remoteAddr3)+interval*50)
|
|
for i := 0; i <= 50; i++ {
|
|
go func(port int) {
|
|
trueAddress := ip + ":" + strconv.Itoa(port)
|
|
logs.Trace("try send test packet to target %s", trueAddress)
|
|
remoteUdpAddr, err := net.ResolveUDPAddr("udp", trueAddress)
|
|
if err != nil {
|
|
return
|
|
}
|
|
ticker := time.NewTicker(time.Second * 2)
|
|
defer ticker.Stop()
|
|
for {
|
|
select {
|
|
case <-ticker.C:
|
|
if isClose {
|
|
return
|
|
}
|
|
if _, err := localConn.WriteTo([]byte(common.WORK_P2P_CONNECT), remoteUdpAddr); err != nil {
|
|
return
|
|
}
|
|
}
|
|
}
|
|
}(ports[i])
|
|
time.Sleep(time.Millisecond * 10)
|
|
}
|
|
}()
|
|
|
|
}
|
|
|
|
buf := make([]byte, 10)
|
|
for {
|
|
localConn.SetReadDeadline(time.Now().Add(time.Second * 10))
|
|
n, addr, err := localConn.ReadFromUDP(buf)
|
|
localConn.SetReadDeadline(time.Time{})
|
|
if err != nil {
|
|
break
|
|
}
|
|
switch string(buf[:n]) {
|
|
case common.WORK_P2P_SUCCESS:
|
|
for i := 20; i > 0; i-- {
|
|
if _, err = localConn.WriteTo([]byte(common.WORK_P2P_END), addr); err != nil {
|
|
return "", err
|
|
}
|
|
}
|
|
return addr.String(), nil
|
|
case common.WORK_P2P_END:
|
|
logs.Trace("Remotely Address %s Reply Packet Successfully Received", addr.String())
|
|
return addr.String(), nil
|
|
case common.WORK_P2P_CONNECT:
|
|
go func() {
|
|
for i := 20; i > 0; i-- {
|
|
logs.Trace("try send receive success packet to target %s", addr.String())
|
|
if _, err = localConn.WriteTo([]byte(common.WORK_P2P_SUCCESS), addr); err != nil {
|
|
return
|
|
}
|
|
time.Sleep(time.Second)
|
|
}
|
|
}()
|
|
default:
|
|
continue
|
|
}
|
|
}
|
|
return "", errors.New("connect to the target failed, maybe the nat type is not support p2p")
|
|
}
|
|
|
|
func newUdpConnByAddr(addr string) (*net.UDPConn, error) {
|
|
udpAddr, err := net.ResolveUDPAddr("udp", addr)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
udpConn, err := net.ListenUDP("udp", udpAddr)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return udpConn, nil
|
|
}
|
|
|
|
func getNextAddr(addr string, n int) (string, error) {
|
|
arr := strings.Split(addr, ":")
|
|
if len(arr) != 2 {
|
|
return "", errors.New(fmt.Sprintf("the format of %s incorrect", addr))
|
|
}
|
|
if p, err := strconv.Atoi(arr[1]); err != nil {
|
|
return "", err
|
|
} else {
|
|
return arr[0] + ":" + strconv.Itoa(p+n), nil
|
|
}
|
|
}
|
|
|
|
func getAddrInterval(addr1, addr2, addr3 string) (int, error) {
|
|
arr1 := strings.Split(addr1, ":")
|
|
if len(arr1) != 2 {
|
|
return 0, errors.New(fmt.Sprintf("the format of %s incorrect", addr1))
|
|
}
|
|
arr2 := strings.Split(addr2, ":")
|
|
if len(arr2) != 2 {
|
|
return 0, errors.New(fmt.Sprintf("the format of %s incorrect", addr2))
|
|
}
|
|
arr3 := strings.Split(addr3, ":")
|
|
if len(arr3) != 2 {
|
|
return 0, errors.New(fmt.Sprintf("the format of %s incorrect", addr3))
|
|
}
|
|
p1, err := strconv.Atoi(arr1[1])
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
p2, err := strconv.Atoi(arr2[1])
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
p3, err := strconv.Atoi(arr3[1])
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
interVal := int(math.Floor(math.Min(math.Abs(float64(p3-p2)), math.Abs(float64(p2-p1)))))
|
|
if p3-p1 < 0 {
|
|
return -interVal, nil
|
|
}
|
|
return interVal, nil
|
|
}
|
|
|
|
func getRandomPortArr(min, max int) []int {
|
|
if min > max {
|
|
min, max = max, min
|
|
}
|
|
addrAddr := make([]int, max-min+1)
|
|
for i := min; i <= max; i++ {
|
|
addrAddr[max-i] = i
|
|
}
|
|
rand.Seed(time.Now().UnixNano())
|
|
var r, temp int
|
|
for i := max - min; i > 0; i-- {
|
|
r = rand.Int() % i
|
|
temp = addrAddr[i]
|
|
addrAddr[i] = addrAddr[r]
|
|
addrAddr[r] = temp
|
|
}
|
|
return addrAddr
|
|
}
|