frp/cmd/frpc/sub/root.go

239 lines
6.3 KiB
Go

// Copyright 2018 fatedier, fatedier@gmail.com
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package sub
import (
"fmt"
"io/fs"
"net"
"os"
"os/signal"
"path/filepath"
"strconv"
"sync"
"syscall"
"time"
"github.com/spf13/cobra"
"github.com/fatedier/frp/client"
"github.com/fatedier/frp/pkg/auth"
"github.com/fatedier/frp/pkg/config"
"github.com/fatedier/frp/pkg/util/log"
"github.com/fatedier/frp/pkg/util/version"
)
const (
CfgFileTypeIni = iota
CfgFileTypeCmd
)
var (
cfgFile string
cfgDir string
showVersion bool
serverAddr string
user string
protocol string
token string
logLevel string
logFile string
logMaxDays int
disableLogColor bool
dnsServer string
proxyName string
localIP string
localPort int
remotePort int
useEncryption bool
useCompression bool
bandwidthLimit string
bandwidthLimitMode string
customDomains string
subDomain string
httpUser string
httpPwd string
locations string
hostHeaderRewrite string
role string
sk string
multiplexer string
serverName string
bindAddr string
bindPort int
tlsEnable bool
)
func init() {
rootCmd.PersistentFlags().StringVarP(&cfgFile, "config", "c", "./frpc.ini", "config file of frpc")
rootCmd.PersistentFlags().StringVarP(&cfgDir, "config_dir", "", "", "config directory, run one frpc service for each file in config directory")
rootCmd.PersistentFlags().BoolVarP(&showVersion, "version", "v", false, "version of frpc")
}
func RegisterCommonFlags(cmd *cobra.Command) {
cmd.PersistentFlags().StringVarP(&serverAddr, "server_addr", "s", "127.0.0.1:7000", "frp server's address")
cmd.PersistentFlags().StringVarP(&user, "user", "u", "", "user")
cmd.PersistentFlags().StringVarP(&protocol, "protocol", "p", "tcp", "tcp or kcp or websocket")
cmd.PersistentFlags().StringVarP(&token, "token", "t", "", "auth token")
cmd.PersistentFlags().StringVarP(&logLevel, "log_level", "", "info", "log level")
cmd.PersistentFlags().StringVarP(&logFile, "log_file", "", "console", "console or file path")
cmd.PersistentFlags().IntVarP(&logMaxDays, "log_max_days", "", 3, "log file reversed days")
cmd.PersistentFlags().BoolVarP(&disableLogColor, "disable_log_color", "", false, "disable log color in console")
cmd.PersistentFlags().BoolVarP(&tlsEnable, "tls_enable", "", true, "enable frpc tls")
cmd.PersistentFlags().StringVarP(&dnsServer, "dns_server", "", "", "specify dns server instead of using system default one")
}
var rootCmd = &cobra.Command{
Use: "frpc",
Short: "frpc is the client of frp (https://github.com/fatedier/frp)",
RunE: func(cmd *cobra.Command, args []string) error {
if showVersion {
fmt.Println(version.Full())
return nil
}
// If cfgDir is not empty, run multiple frpc service for each config file in cfgDir.
// Note that it's only designed for testing. It's not guaranteed to be stable.
if cfgDir != "" {
_ = runMultipleClients(cfgDir)
return nil
}
// Do not show command usage here.
err := runClient(cfgFile)
if err != nil {
os.Exit(1)
}
return nil
},
}
func runMultipleClients(cfgDir string) error {
var wg sync.WaitGroup
err := filepath.WalkDir(cfgDir, func(path string, d fs.DirEntry, err error) error {
if err != nil || d.IsDir() {
return nil
}
wg.Add(1)
time.Sleep(time.Millisecond)
go func() {
defer wg.Done()
err := runClient(path)
if err != nil {
fmt.Printf("frpc service error for config file [%s]\n", path)
}
}()
return nil
})
wg.Wait()
return err
}
func Execute() {
if err := rootCmd.Execute(); err != nil {
os.Exit(1)
}
}
func handleSignal(svr *client.Service, doneCh chan struct{}) {
ch := make(chan os.Signal, 1)
signal.Notify(ch, syscall.SIGINT, syscall.SIGTERM)
<-ch
svr.GracefulClose(500 * time.Millisecond)
close(doneCh)
}
func parseClientCommonCfgFromCmd() (cfg config.ClientCommonConf, err error) {
cfg = config.GetDefaultClientConf()
ipStr, portStr, err := net.SplitHostPort(serverAddr)
if err != nil {
err = fmt.Errorf("invalid server_addr: %v", err)
return
}
cfg.ServerAddr = ipStr
cfg.ServerPort, err = strconv.Atoi(portStr)
if err != nil {
err = fmt.Errorf("invalid server_addr: %v", err)
return
}
cfg.User = user
cfg.Protocol = protocol
cfg.LogLevel = logLevel
cfg.LogFile = logFile
cfg.LogMaxDays = int64(logMaxDays)
cfg.DisableLogColor = disableLogColor
cfg.DNSServer = dnsServer
// Only token authentication is supported in cmd mode
cfg.ClientConfig = auth.GetDefaultClientConf()
cfg.Token = token
cfg.TLSEnable = tlsEnable
cfg.Complete()
if err = cfg.Validate(); err != nil {
err = fmt.Errorf("parse config error: %v", err)
return
}
return
}
func runClient(cfgFilePath string) error {
cfg, pxyCfgs, visitorCfgs, err := config.ParseClientConfig(cfgFilePath)
if err != nil {
fmt.Println(err)
return err
}
return startService(cfg, pxyCfgs, visitorCfgs, cfgFilePath)
}
func startService(
cfg config.ClientCommonConf,
pxyCfgs map[string]config.ProxyConf,
visitorCfgs map[string]config.VisitorConf,
cfgFile string,
) (err error) {
log.InitLog(cfg.LogWay, cfg.LogFile, cfg.LogLevel,
cfg.LogMaxDays, cfg.DisableLogColor)
if cfgFile != "" {
log.Info("start frpc service for config file [%s]", cfgFile)
defer log.Info("frpc service for config file [%s] stopped", cfgFile)
}
svr, errRet := client.NewService(cfg, pxyCfgs, visitorCfgs, cfgFile)
if errRet != nil {
err = errRet
return
}
closedDoneCh := make(chan struct{})
shouldGracefulClose := cfg.Protocol == "kcp" || cfg.Protocol == "quic"
// Capture the exit signal if we use kcp or quic.
if shouldGracefulClose {
go handleSignal(svr, closedDoneCh)
}
err = svr.Run()
if err == nil && shouldGracefulClose {
<-closedDoneCh
}
return
}