309 lines
6.8 KiB
Go
309 lines
6.8 KiB
Go
package main
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import (
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"fmt"
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"net"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"github.com/ncw/swift"
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)
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func main() {
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l, err := net.Listen("tcp4", ":21")
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if err != nil {
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panic(err)
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}
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defer l.Close()
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for {
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conn, err := l.Accept()
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if err != nil {
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fmt.Printf(err.Error())
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continue
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}
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go handle(conn)
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}
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//56652e9028ded5ea5d4772ba80e578ce
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//storage_21_1
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//https://api.clodo.ru/
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}
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func handle(c net.Conn) {
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defer c.Close()
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s, err := NewServer(c)
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if err != nil {
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fmt.Printf(err.Error())
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}
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s.ctrl.PrintfLine("220 %s [%s]", "go-ftp", c.LocalAddr())
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for {
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line, err := s.ctrl.ReadLine()
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if err != nil {
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fmt.Printf(err.Error())
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return
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}
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parts := strings.Fields(line)
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cmd := parts[0]
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params := parts[1:]
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switch cmd {
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case "USER":
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s.cmdServerUser(params)
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case "PASS":
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s.cmdServerPass(params)
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case "PWD":
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s.cmdServerPwd(params)
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case "EPSV":
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s.cmdServerEpsv(params)
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case "PASV":
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s.cmdServerPasv(params)
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case "TYPE":
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s.cmdServerType(params)
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case "LIST":
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s.cmdServerList(params)
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case "SYST":
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s.cmdServerSyst(params)
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case "QUIT":
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s.cmdServerQuit(params)
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s.Close()
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return
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case "SIZE":
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s.cmdServerSize(params)
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case "CWD", "XCWD":
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s.cmdServerCwd(params)
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case "RETR":
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s.cmdServerRetr(params)
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case "PORT":
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s.cmdServerPort(params)
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case "EPRT":
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s.cmdServerEprt(params)
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case "LPRT":
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s.cmdServerLprt(params)
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case "LPSV":
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s.cmdServerLpsv(params)
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case "FEAT":
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s.cmdServerFeat(params)
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default:
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fmt.Printf("%s\n", line)
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}
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}
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}
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func (s *Conn) cmdServerUser(args []string) {
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fmt.Printf("cmdServerUser: %s\n", args)
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// s.user = args[0]
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s.ctrl.PrintfLine("331 Password required for %s", args[0])
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}
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func (s *Conn) cmdServerPass(args []string) {
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fmt.Printf("cmdServerPass: %s\n", args)
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// s.token = args[0]
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s.sw = &swift.Connection{UserName: s.user, ApiKey: s.token, AuthUrl: s.api, AuthVersion: 1}
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err := s.sw.Authenticate()
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if err != nil {
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fmt.Printf(err.Error())
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s.ctrl.PrintfLine("530 Login incorrect")
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return
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}
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s.ctrl.PrintfLine("230 Logged on")
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}
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func (s *Conn) cmdServerPwd(args []string) {
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fmt.Printf("cmdServerPwd: %s\n", args)
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if s.path == "" {
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s.path = "/"
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}
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s.ctrl.PrintfLine(`257 "%s" is current directory.`, s.path)
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}
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func (s *Conn) cmdServerEpsv(args []string) {
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fmt.Printf("cmdServerEpsv: %s\n", args)
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if s.ln == nil {
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ln, err := net.Listen("tcp4", fmt.Sprintf(":%d", s.port))
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if err != nil {
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fmt.Printf(err.Error())
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s.ctrl.PrintfLine("425 Data connection failed")
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}
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s.ln = ln
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}
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if s.port == 0 {
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_, port, _ := net.SplitHostPort(s.ln.Addr().String())
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s.port, _ = strconv.Atoi(port)
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}
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s.ctrl.PrintfLine("229 Entering Extended Passive Mode (|||%d|)", s.port)
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}
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func (s *Conn) cmdServerType(args []string) {
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fmt.Printf("cmdServerType: %s\n", args)
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s.mode = args[0]
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s.ctrl.PrintfLine("200 Type set to %s", s.mode)
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}
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func (s *Conn) cmdServerList(args []string) {
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fmt.Printf("cmdServerList: %s\n", args)
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s.ctrl.PrintfLine(`150 Opening data channel for directory listing of "%s"`, strings.Join(args, ""))
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c, err := s.newPassiveSocket()
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if err != nil {
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fmt.Printf(err.Error())
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s.ctrl.PrintfLine("425 Data connection failed")
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return
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}
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var n int
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var files []os.FileInfo
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if s.path == "/" {
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cnts, err := s.sw.ContainersAll(nil)
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if err != nil {
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fmt.Printf(err.Error())
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return
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}
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files = append(files, NewDirItem(".", 4096, 0), NewDirItem("..", 4096, 0))
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for _, cnt := range cnts {
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it := NewDirItem(cnt.Name, cnt.Bytes, cnt.Count)
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files = append(files, it)
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}
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} else {
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if idx := strings.Index(s.path, "/"); idx != -1 {
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s.container = s.path[idx+1:]
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} else {
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s.container = s.path
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}
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objs, err := s.sw.ObjectsAll(s.container, nil)
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if err != nil {
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fmt.Printf(err.Error())
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return
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}
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files = append(files, NewDirItem(".", 4096, 0), NewDirItem("..", 4096, 0))
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for _, obj := range objs {
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it := NewFileItem(obj.Name, obj.Bytes, 1)
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files = append(files, it)
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}
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}
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ls := newListFormatter(files)
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n, err = c.Write([]byte(ls.Detailed()))
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if err != nil {
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fmt.Printf(err.Error())
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}
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c.Close()
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s.ctrl.PrintfLine(`226 Closing data connection, sent %d bytes`, n)
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// s.ctrl.PrintfLine("226 Transfer complete.")
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}
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func (s *Conn) cmdServerSyst(args []string) {
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fmt.Printf("cmdServerSyst: %s\n", args)
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s.ctrl.PrintfLine("215 UNIX Type: L8")
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}
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func (s *Conn) cmdServerQuit(args []string) {
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s.ctrl.PrintfLine("221 Goodbye")
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if s.ln != nil {
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s.ln.Close()
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}
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if s.ctrl != nil {
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s.ctrl.Close()
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}
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}
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func (s *Conn) cmdServerPasv(args []string) {
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fmt.Printf("cmdServerPasv: %s\n", args)
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if s.ln == nil {
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ln, err := net.Listen("tcp4", fmt.Sprintf(":%d", s.port))
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if err != nil {
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fmt.Printf("%s\n", err.Error())
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s.ctrl.PrintfLine("425 Data connection failed")
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}
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s.ln = ln
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}
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host, port, _ := net.SplitHostPort(s.ln.Addr().String())
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p0, _ := strconv.Atoi(port)
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p1 := p0 / 256
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p2 := p0 - p1*256
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s.port, _ = strconv.Atoi(port)
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s.ctrl.PrintfLine("227 Entering Passive Mode (%s,%d,%d)", strings.Replace(host, ".", ",", -1), p1, p2)
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}
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func (s *Conn) newPassiveSocket() (net.Conn, error) {
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return s.ln.Accept()
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}
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func (s *Conn) cmdServerSize(args []string) {
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fmt.Printf("cmdServerSize: %s\n", args)
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s.ctrl.PrintfLine("213 %d", len([]byte("test\n")))
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}
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func (s *Conn) cmdServerCwd(args []string) {
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fmt.Printf("cmdServerCwd: %s\n", args)
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if len(args) == 0 {
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s.path = "/"
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} else {
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s.path = filepath.Clean(args[0])
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}
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s.ctrl.PrintfLine(`250 "%s" is current directory.`, s.path)
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}
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func (s *Conn) cmdServerPort(args []string) {
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fmt.Printf("cmdServerPort: %s\n", args)
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s.ctrl.PrintfLine("501 Data connection failed")
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}
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func (s *Conn) cmdServerEprt(args []string) {
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fmt.Printf("cmdServerEprt: %s\n", args)
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s.ctrl.PrintfLine("501 Data connection failed")
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}
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func (s *Conn) cmdServerLprt(args []string) {
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fmt.Printf("cmdServerLprt: %s\n", args)
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s.ctrl.PrintfLine("501 Data connection failed")
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}
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func (s *Conn) cmdServerLpsv(args []string) {
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fmt.Printf("cmdServerLpsv: %s\n", args)
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s.ctrl.PrintfLine("501 Data connection failed")
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}
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func (s *Conn) cmdServerFeat(args []string) {
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fmt.Printf("cmdServerFeat: %s\n", args)
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s.ctrl.PrintfLine("501 Data connection failed")
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return
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s.ctrl.PrintfLine(`211-Extensions supported:
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SIZE
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RETR
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CWD
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PWD
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QUIT
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SYST
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PASV
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EPSV
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LIST
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TYPE
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USER
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PASS
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UTF8
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211 END`)
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}
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func (s *Conn) cmdServerRetr(args []string) {
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fmt.Printf("cmdServerRetr: %s\n", args)
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s.ctrl.PrintfLine(`150 Opening data channel for file contents "%s"`, args[0])
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c, err := s.newPassiveSocket()
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if err != nil {
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s.ctrl.PrintfLine("425 Data connection failed")
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return
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}
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n, err := c.Write([]byte("test\n"))
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if err != nil {
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s.ctrl.PrintfLine("425 Data connection failed")
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fmt.Printf(err.Error())
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return
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}
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c.Close()
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s.ctrl.PrintfLine(`226 Closing data connection, sent %d bytes`, n)
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s.ctrl.PrintfLine("226 Transfer complete.")
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}
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