You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
632 lines
12 KiB
Go
632 lines
12 KiB
Go
package main
|
|
|
|
import (
|
|
"crypto/tls"
|
|
"errors"
|
|
"flag"
|
|
"fmt"
|
|
"github.com/bgentry/speakeasy"
|
|
"github.com/fangdingjun/obfssh"
|
|
"github.com/kr/fs"
|
|
"github.com/pkg/sftp"
|
|
"golang.org/x/crypto/ssh"
|
|
"golang.org/x/crypto/ssh/agent"
|
|
"io"
|
|
"io/ioutil"
|
|
"log"
|
|
"net"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
"syscall"
|
|
"time"
|
|
)
|
|
|
|
type options struct {
|
|
Debug bool
|
|
Port int
|
|
User string
|
|
Passwd string
|
|
TLS bool
|
|
TLSInsecure bool
|
|
Recursive bool
|
|
ObfsMethod string
|
|
ObfsKey string
|
|
DisableObfsAfterHandshake bool
|
|
PrivateKey string
|
|
}
|
|
|
|
func main() {
|
|
var cfg options
|
|
flag.Usage = usage
|
|
|
|
flag.BoolVar(&cfg.Debug, "d", false, "verbose mode")
|
|
flag.IntVar(&cfg.Port, "p", 22, "port")
|
|
flag.StringVar(&cfg.User, "l", os.Getenv("USER"), "user")
|
|
flag.BoolVar(&cfg.TLS, "tls", false, "use tls or not")
|
|
flag.BoolVar(&cfg.TLSInsecure, "tls-insecure", false, "insecure tls connection")
|
|
flag.StringVar(&cfg.Passwd, "pw", "", "password")
|
|
flag.StringVar(&cfg.PrivateKey, "i", "", "private key")
|
|
flag.BoolVar(&cfg.Recursive, "r", false, "recursively copy entries")
|
|
flag.Parse()
|
|
|
|
if cfg.Debug {
|
|
obfssh.SSHLogLevel = obfssh.DEBUG
|
|
}
|
|
|
|
args := flag.Args()
|
|
|
|
if len(args) < 2 {
|
|
flag.Usage()
|
|
os.Exit(1)
|
|
}
|
|
|
|
var err error
|
|
|
|
if strings.Contains(args[0], ":") {
|
|
err = download(args, &cfg)
|
|
} else {
|
|
err = upload(args, &cfg)
|
|
}
|
|
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
}
|
|
|
|
func createSFTPConn(host, user string, cfg *options) (*sftp.Client, error) {
|
|
auths := []ssh.AuthMethod{}
|
|
|
|
// read ssh agent and default auth key
|
|
if cfg.Passwd == "" && cfg.PrivateKey == "" {
|
|
var pkeys []ssh.Signer
|
|
if aconn, err := net.Dial("unix", os.Getenv("SSH_AUTH_SOCK")); err == nil {
|
|
//auths = append(auths, ssh.PublicKeysCallback(agent.NewClient(aconn).Signers))
|
|
if signers, err := agent.NewClient(aconn).Signers(); err == nil {
|
|
debuglog("add private key from agent")
|
|
pkeys = append(pkeys, signers...)
|
|
} else {
|
|
debuglog("get key from agent failed: %s", err)
|
|
}
|
|
} else {
|
|
debuglog("dial to agent failed: %s", err)
|
|
}
|
|
|
|
home := os.Getenv("HOME")
|
|
for _, f := range []string{
|
|
".ssh/id_rsa",
|
|
".ssh/id_dsa",
|
|
".ssh/identity",
|
|
".ssh/id_ecdsa",
|
|
".ssh/id_ed25519",
|
|
} {
|
|
k1 := filepath.Join(home, f)
|
|
if pemBytes, err := ioutil.ReadFile(k1); err == nil {
|
|
if priKey, err := ssh.ParsePrivateKey(pemBytes); err == nil {
|
|
//auths = append(auths, ssh.PublicKeys(priKey))
|
|
pkeys = append(pkeys, priKey)
|
|
debuglog("add private key %s", k1)
|
|
} else {
|
|
debuglog("parse private key failed: %s", err)
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
if len(pkeys) != 0 {
|
|
debuglog("totol %d private keys", len(pkeys))
|
|
auths = append(auths, ssh.PublicKeys(pkeys...))
|
|
}
|
|
}
|
|
|
|
if cfg.Passwd != "" {
|
|
debuglog("add password auth")
|
|
auths = append(auths, ssh.Password(cfg.Passwd))
|
|
} else {
|
|
debuglog("add keyboard interactive")
|
|
auths = append(auths,
|
|
ssh.RetryableAuthMethod(ssh.PasswordCallback(passwordAuth), 3))
|
|
}
|
|
|
|
if cfg.PrivateKey != "" {
|
|
if buf, err := ioutil.ReadFile(cfg.PrivateKey); err == nil {
|
|
if p, err := ssh.ParsePrivateKey(buf); err == nil {
|
|
debuglog("add private key: %s", cfg.PrivateKey)
|
|
auths = append(auths, ssh.PublicKeys(p))
|
|
} else {
|
|
debuglog("parse private key failed: %s", err)
|
|
}
|
|
} else {
|
|
debuglog("read private key failed: %s", err)
|
|
}
|
|
}
|
|
if user == "" {
|
|
user = cfg.User
|
|
}
|
|
|
|
config := &ssh.ClientConfig{
|
|
User: user,
|
|
Auth: auths,
|
|
Timeout: 5 * time.Second,
|
|
HostKeyCallback: func(hostname string, remote net.Addr, key ssh.PublicKey) error {
|
|
return nil
|
|
},
|
|
}
|
|
|
|
rhost := net.JoinHostPort(host, fmt.Sprintf("%d", cfg.Port))
|
|
|
|
var c net.Conn
|
|
var err error
|
|
if cfg.TLS {
|
|
c, err = tls.Dial("tcp", rhost, &tls.Config{
|
|
ServerName: host,
|
|
InsecureSkipVerify: cfg.TLSInsecure,
|
|
})
|
|
} else {
|
|
c, err = net.Dial("tcp", rhost)
|
|
}
|
|
|
|
if err != nil {
|
|
//log.Fatal(err)
|
|
return nil, err
|
|
}
|
|
|
|
conf := &obfssh.Conf{
|
|
Timeout: 10 * time.Second,
|
|
KeepAliveInterval: 10 * time.Second,
|
|
KeepAliveMax: 5,
|
|
}
|
|
|
|
conn, err := obfssh.NewClient(c, config, rhost, conf)
|
|
if err != nil {
|
|
//log.Fatal(err)
|
|
return nil, err
|
|
}
|
|
|
|
//defer conn.Close()
|
|
|
|
sftpConn, err := sftp.NewClient(conn.Client(), sftp.MaxPacket(64*1024))
|
|
if err != nil {
|
|
//log.Fatal(err)
|
|
return nil, err
|
|
}
|
|
return sftpConn, nil
|
|
}
|
|
|
|
func splitHostPath(s string) (string, string, string) {
|
|
var user, host, path string
|
|
r1 := s
|
|
if strings.Contains(r1, "@") {
|
|
ss1 := strings.SplitN(r1, "@", 2)
|
|
user = ss1[0]
|
|
r1 = ss1[1]
|
|
}
|
|
if strings.Contains(r1, ":") {
|
|
ss2 := strings.SplitN(r1, ":", 2)
|
|
host = ss2[0]
|
|
path = ss2[1]
|
|
} else {
|
|
host = r1
|
|
}
|
|
return user, host, path
|
|
}
|
|
|
|
func download(args []string, cfg *options) error {
|
|
|
|
var err1 error
|
|
|
|
localFile := clean(args[len(args)-1])
|
|
|
|
st, _ := os.Stat(localFile)
|
|
|
|
if len(args) > 2 {
|
|
if st != nil && !st.Mode().IsDir() {
|
|
log.Fatal("can't transfer multiple files to file")
|
|
}
|
|
if st == nil {
|
|
makeDirs(localFile, osDir{})
|
|
if err := os.Mkdir(localFile, 0755); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
}
|
|
st, _ = os.Stat(localFile)
|
|
}
|
|
|
|
for _, f := range args[:len(args)-1] {
|
|
user, host, path := splitHostPath(f)
|
|
if host == "" || path == "" {
|
|
return errors.New("invalid path")
|
|
}
|
|
|
|
path = clean(path)
|
|
|
|
sftpConn, err := createSFTPConn(host, user, cfg)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
st1, err := sftpConn.Stat(path)
|
|
if err != nil {
|
|
err1 = err
|
|
debuglog("%s", err)
|
|
sftpConn.Close()
|
|
continue
|
|
}
|
|
if st1.Mode().IsDir() {
|
|
if !cfg.Recursive {
|
|
debuglog("omit remote directory %s", path)
|
|
sftpConn.Close()
|
|
continue
|
|
}
|
|
if err := rget(sftpConn, path, localFile); err != nil {
|
|
debuglog("download error: %s", err)
|
|
err1 = err
|
|
}
|
|
sftpConn.Close()
|
|
continue
|
|
}
|
|
|
|
lfile := localFile
|
|
if st != nil && st.Mode().IsDir() {
|
|
lfile = filepath.Join(lfile, filepath.Base(path))
|
|
}
|
|
|
|
lfile = clean(lfile)
|
|
|
|
if err := get(sftpConn, path, lfile); err != nil {
|
|
debuglog("download error: %s", err)
|
|
err1 = err
|
|
}
|
|
|
|
sftpConn.Close()
|
|
}
|
|
|
|
debuglog("done")
|
|
return err1
|
|
}
|
|
|
|
func upload(args []string, cfg *options) error {
|
|
|
|
rfile := args[len(args)-1]
|
|
|
|
rfile = clean(rfile)
|
|
|
|
user, host, path := splitHostPath(rfile)
|
|
|
|
if host == "" || path == "" {
|
|
return errors.New("invalid path")
|
|
}
|
|
|
|
path = clean(path)
|
|
|
|
sftpConn, err := createSFTPConn(host, user, cfg)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer sftpConn.Close()
|
|
|
|
st, _ := sftpConn.Stat(path)
|
|
|
|
var err1 error
|
|
if len(args) > 2 {
|
|
if st != nil && !st.Mode().IsDir() {
|
|
log.Fatal("multiple files can only been transferred to directory")
|
|
}
|
|
if st == nil {
|
|
makeDirs(path, sftpConn)
|
|
if err := sftpConn.Mkdir(path); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
}
|
|
st, _ = sftpConn.Stat(path)
|
|
}
|
|
|
|
for i := 0; i < len(args)-1; i++ {
|
|
localFile := args[i]
|
|
|
|
localFile = clean(localFile)
|
|
|
|
st1, err := os.Stat(localFile)
|
|
|
|
// local file not exists
|
|
if err != nil {
|
|
debuglog("%s", err)
|
|
err1 = err
|
|
continue
|
|
}
|
|
|
|
// directory
|
|
if st1.Mode().IsDir() {
|
|
if !cfg.Recursive {
|
|
debuglog("omit directory %s", localFile)
|
|
continue
|
|
}
|
|
// transfer directory
|
|
if err := rput(sftpConn, localFile, path); err != nil {
|
|
debuglog("%s", err)
|
|
err1 = err
|
|
}
|
|
|
|
// next entry
|
|
continue
|
|
}
|
|
|
|
// file
|
|
|
|
remoteFile := path
|
|
|
|
if st != nil && st.Mode().IsDir() {
|
|
remoteFile = filepath.Join(path, filepath.Base(localFile))
|
|
}
|
|
|
|
remoteFile = clean(remoteFile)
|
|
|
|
if err := put(sftpConn, localFile, remoteFile); err != nil {
|
|
debuglog("upload %s failed: %s", localFile, err.Error())
|
|
err1 = err
|
|
}
|
|
}
|
|
return err1
|
|
}
|
|
|
|
func get(sftpConn *sftp.Client, remoteFile, localFile string) error {
|
|
|
|
debuglog("download %s -> %s", remoteFile, localFile)
|
|
|
|
fp, err := sftpConn.Open(remoteFile)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
defer fp.Close()
|
|
|
|
fp1, err := os.OpenFile(localFile, syscall.O_WRONLY|syscall.O_CREAT|syscall.O_TRUNC, 0644)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
defer fp1.Close()
|
|
|
|
//_, err = io.Copy(fp1, fp)
|
|
err = copyFile(fp1, fp)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// set permission and modtime
|
|
|
|
st, err := sftpConn.Stat(remoteFile)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := os.Chmod(localFile, st.Mode().Perm()); err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := os.Chtimes(localFile, st.ModTime(), st.ModTime()); err != nil {
|
|
return err
|
|
}
|
|
|
|
debuglog("done")
|
|
|
|
return nil
|
|
}
|
|
|
|
func put(sftpConn *sftp.Client, localFile, remoteFile string) error {
|
|
debuglog("upload %s -> %s", localFile, remoteFile)
|
|
|
|
fpw, err := sftpConn.OpenFile(remoteFile, syscall.O_WRONLY|syscall.O_CREAT|syscall.O_TRUNC)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
defer fpw.Close()
|
|
|
|
fpr, err := os.Open(localFile)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
defer fpr.Close()
|
|
|
|
//_, err = io.Copy(fpw, fpr)
|
|
err = copyFile(fpw, fpr)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// set permission and modtime
|
|
st, err := os.Stat(localFile)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := sftpConn.Chmod(remoteFile, st.Mode().Perm()); err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := sftpConn.Chtimes(remoteFile, st.ModTime(), st.ModTime()); err != nil {
|
|
return err
|
|
}
|
|
|
|
debuglog("done")
|
|
|
|
return nil
|
|
}
|
|
|
|
func rput(sftpConn *sftp.Client, localDir, remoteDir string) error {
|
|
walker := fs.Walk(localDir)
|
|
|
|
for walker.Step() {
|
|
if err := walker.Err(); err != nil {
|
|
return err
|
|
}
|
|
|
|
if st := walker.Stat(); !st.Mode().IsRegular() {
|
|
debuglog("skip %s", walker.Path())
|
|
continue
|
|
}
|
|
|
|
p := clean(walker.Path())
|
|
|
|
p1 := strings.Replace(p, localDir, "", 1)
|
|
|
|
fmt.Println(strings.TrimLeft(p1, "/"))
|
|
|
|
p2 := clean(filepath.Join(remoteDir, p1))
|
|
|
|
if err := makeDirs(p2, sftpConn); err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := put(sftpConn, p, p2); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func rget(sftpConn *sftp.Client, remoteDir, localDir string) error {
|
|
debuglog("transfer recusive from remote to local, %s -> %s", remoteDir, localDir)
|
|
|
|
walker := sftpConn.Walk(remoteDir)
|
|
for walker.Step() {
|
|
if err := walker.Err(); err != nil {
|
|
return err
|
|
}
|
|
|
|
if st := walker.Stat(); !st.Mode().IsRegular() {
|
|
debuglog("skip %s", walker.Path())
|
|
continue
|
|
}
|
|
|
|
p := clean(walker.Path())
|
|
p1 := strings.Replace(p, remoteDir, "", 1)
|
|
p2 := clean(filepath.Join(localDir, p1))
|
|
|
|
fmt.Println(strings.TrimLeft(p1, "/"))
|
|
|
|
if err := makeDirs(p2, osDir{}); err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := get(sftpConn, p, p2); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
type osDir struct{}
|
|
|
|
func (f osDir) Stat(s string) (os.FileInfo, error) {
|
|
return os.Stat(s)
|
|
}
|
|
|
|
func (f osDir) Mkdir(s string) error {
|
|
return os.Mkdir(s, 0755)
|
|
}
|
|
|
|
type dirInterface interface {
|
|
Stat(s string) (os.FileInfo, error)
|
|
Mkdir(s string) error
|
|
}
|
|
|
|
func makeDirs(p string, c dirInterface) error {
|
|
p = clean(p)
|
|
|
|
debuglog("make directory for %s", p)
|
|
|
|
for i := 1; i < len(p); i++ {
|
|
if p[i] == '/' {
|
|
p1 := p[:i]
|
|
if _, err := c.Stat(p1); err != nil {
|
|
debuglog("make directory %s", p1)
|
|
if err := c.Mkdir(p1); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func passwordAuth() (string, error) {
|
|
// read password from console
|
|
s, err := speakeasy.Ask("Password: ")
|
|
return strings.Trim(s, " \r\n"), err
|
|
}
|
|
|
|
func debuglog(format string, args ...interface{}) {
|
|
obfssh.Log(obfssh.DEBUG, format, args...)
|
|
}
|
|
|
|
//
|
|
// when use pkg/sftp client transfer a big file from pkg/sftp server,
|
|
// io.Copy while cause connection hang,
|
|
// I don't known why,
|
|
// use this function has no problem
|
|
//
|
|
func copyFile(w io.Writer, r io.Reader) error {
|
|
buf := make([]byte, 34*1024)
|
|
for {
|
|
n, err := r.Read(buf)
|
|
if n > 0 {
|
|
_, err1 := w.Write(buf[:n])
|
|
if err1 != nil {
|
|
return err1
|
|
}
|
|
}
|
|
if err != nil {
|
|
if err == io.EOF {
|
|
// trust io.EOF as success
|
|
return nil
|
|
}
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
|
|
func usage() {
|
|
usageStr := `Usage:
|
|
obfssh_scp -i identity_file -l login_name
|
|
-p port -pw password -r -obfs_method method -obfs_key key
|
|
-disable_obfs_after_handshake [user@]host1:]file1 ... [user@host2:]file2
|
|
|
|
Options:
|
|
-d verbose mode
|
|
|
|
-i identity_file
|
|
Specifies a identity(private key) for public key authentication.
|
|
|
|
-l login_name
|
|
specifies the user to log in as on the remote machine.
|
|
|
|
-p port
|
|
Port to connect to on the remote host
|
|
|
|
-pw password
|
|
Specifies the password for log in remote machine
|
|
|
|
-r recursively copy the directories
|
|
|
|
-tls
|
|
connect to server via TLS
|
|
|
|
-tls-insecure
|
|
do not verify server's certificate
|
|
`
|
|
fmt.Printf("%s", usageStr)
|
|
os.Exit(1)
|
|
}
|
|
|
|
func clean(p string) string {
|
|
p = filepath.Clean(p)
|
|
if os.PathSeparator != '/' {
|
|
p = strings.Replace(p, string([]byte{os.PathSeparator}), "/", -1)
|
|
}
|
|
return p
|
|
}
|