forked from rampageX/kcpraw
/
service.go
executable file
·234 lines (214 loc) · 4.64 KB
/
service.go
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package ss
import (
"bufio"
"errors"
"fmt"
"strconv"
"strings"
"sync"
"github.com/wwqk4444/ccsexyz_utils"
)
var services sync.Map
func bultinServiceHandler(conn Conn, lis *listener) (c Conn) {
var dst string
if conn.GetDst() != nil {
dst = conn.GetDst().String()
}
if len(dst) == 0 {
c = conn
return
}
v, ok := services.Load(dst)
if !ok {
c = conn
return
}
handler := v.(listenHandler)
c = handler(conn, lis)
return
}
// StoreServiceHandler stores the handler to services map with key addr
func StoreServiceHandler(addr string, handler listenHandler) {
services.Store(addr, handler)
}
const (
echoaddr = "echo:10086"
echohost = "echo"
echoport = 10086
adminaddr = "admin:6666"
adminhost = "admin"
adminport = 6666
)
func init() {
StoreServiceHandler(echoaddr, echoHandler)
StoreServiceHandler(adminaddr, adminHandler)
}
func echoHandler(conn Conn, lis *listener) (c Conn) {
go Pipe(conn, conn, lis.c)
c = nilConn
return
}
func disableBackend(lis *listener, nickname string) (ok bool) {
if lis == nil || lis.c == nil || len(nickname) == 0 {
return
}
for _, v := range lis.c.Backends {
if v.Nickname == nickname {
v.disable = true
ok = true
return
}
}
return
}
func enableBackend(lis *listener, nickname string) (ok bool) {
if lis == nil || lis.c == nil || len(nickname) == 0 {
return
}
for _, v := range lis.c.Backends {
if v.Nickname == nickname {
v.disable = false
ok = true
return
}
}
return
}
var (
errInvalidCommand = errors.New("invalid command")
)
func sendErrorPage(conn Conn, err error) {
p := utils.NewHTTPHeaderParser(utils.GetBuf(4096))
defer utils.PutBuf(p.GetBuf())
errstr := err.Error() + "\r\n"
p.StoreFirstline1([]byte("HTTP/1.1"))
p.StoreFirstline2([]byte("400"))
p.StoreFirstline3([]byte("Bad Request"))
p.Store([]byte("Server"), []byte("shadowsocks-go"))
p.Store([]byte("Content-Length"),
utils.StringToSlice(strconv.Itoa(len(errstr))))
p.Store([]byte("Connection"), []byte("close"))
buf := utils.GetBuf(4096)
defer utils.PutBuf(buf)
n, err := p.Encode(buf)
if err != nil {
return
}
conn.WriteBuffers([][]byte{buf[:n], utils.StringToSlice(errstr)})
}
func sendNormalPage(conn Conn, s string) {
p := utils.NewHTTPHeaderParser(utils.GetBuf(4096))
defer utils.PutBuf(p.GetBuf())
if !strings.HasSuffix(s, "\n") {
s = s + "\n"
}
p.StoreFirstline1([]byte("HTTP/1.1"))
p.StoreFirstline2([]byte("200"))
p.StoreFirstline3([]byte("OK"))
p.Store([]byte("Server"), []byte("shadowsocks-go"))
p.Store([]byte("Content-Length"),
utils.StringToSlice(strconv.Itoa(len(s))))
p.Store([]byte("Connection"), []byte("close"))
buf := utils.GetBuf(4096)
defer utils.PutBuf(buf)
n, err := p.Encode(buf)
if err != nil {
return
}
conn.WriteBuffers([][]byte{buf[:n], utils.StringToSlice(s)})
}
func sendStatusPage(conn Conn, s *statServer) {
var str string
str += fmt.Sprintf("Connections: %v\r\n", s.connections)
str += fmt.Sprintf("TotalReadBytes: %v\r\n", s.totalReadBytes)
str += fmt.Sprintf("TotalWritBytes: %v\r\n", s.totalWritBytes)
sendNormalPage(conn, str)
}
const (
cmdEnable = "enable"
cmdDisable = "disable"
cmdStatus = "status"
)
func adminHandler(conn Conn, lis *listener) (c Conn) {
c = nilConn
defer conn.Close()
var err error
defer func() {
if err != nil {
sendErrorPage(conn, err)
}
}()
r := bufio.NewReader(conn)
_, err = r.ReadString(' ')
if err != nil {
lis.c.LogD(err)
return
}
uri, err := r.ReadString(' ')
if err != nil {
lis.c.LogD(err)
return
}
uri = strings.TrimSuffix(uri, " ")
strs := strings.Split(uri, "/")
if len(strs) > 3 || len(strs) < 2 {
err = errInvalidCommand
return
}
if len(strs) == 2 {
cmd := strs[1]
if cmd == cmdEnable {
lis.c.disable = false
} else if cmd == cmdDisable {
lis.c.disable = true
} else if cmd == cmdStatus {
sendStatusPage(conn, lis.c.stat)
return
} else {
err = errInvalidCommand
return
}
sendNormalPage(conn, "successed!")
return
}
cmd := strs[1]
nickname := strs[2]
var ok bool
switch cmd {
default:
err = errInvalidCommand
case cmdEnable:
ok = enableBackend(lis, nickname)
case cmdDisable:
ok = disableBackend(lis, nickname)
case "autoproxy":
if nickname == cmdDisable {
ok = true
lis.c.AutoProxy = false
} else if nickname == cmdEnable {
ok = true
lis.c.AutoProxy = true
} else {
err = errInvalidCommand
}
case "loghttp":
if nickname == cmdDisable {
ok = true
lis.c.LogHTTP = false
} else if nickname == cmdEnable {
ok = true
lis.c.LogHTTP = true
} else {
err = errInvalidCommand
}
}
if err != nil {
return
}
if ok {
sendNormalPage(conn, "successed!")
} else {
sendNormalPage(conn, "failed!")
}
return
}