func Example(conn *ssh.Client) {
// open an SFTP session over an existing ssh connection.
sftp, err := sftp.NewClient(conn)
if err != nil {
log.Fatal(err)
}
defer sftp.Close()
// walk a directory
w := sftp.Walk("/home/user")
for w.Step() {
if w.Err() != nil {
continue
}
log.Println(w.Path())
}
// leave your mark
f, err := sftp.Create("hello.txt")
if err != nil {
log.Fatal(err)
}
if _, err := f.Write([]byte("Hello world!")); err != nil {
log.Fatal(err)
}
// check it's there
fi, err := sftp.Lstat("hello.txt")
if err != nil {
log.Fatal(err)
}
log.Println(fi)
}
func (s *SftpSession) Connect() error {
addr := fmt.Sprintf("%s:%d", s.section.Server, s.section.Port)
var err error
if s.section.ProxyServer != "" {
paddr := fmt.Sprintf("%s:%d", s.section.ProxyServer, s.section.ProxyPort)
log.Printf("connect to proxy %s", paddr)
conn, err := net.Dial("tcp", paddr)
if err != nil {
return err
}
// http connect
connstr := []byte("CONNECT " + addr + " HTTP/1.1\r\nHost: " + addr + "\r\n\r\n")
if _, err := conn.Write(connstr); err != nil {
return errors.New("failed to write connect to http proxy at " + paddr + ": " + err.Error())
}
status, err := bufio.NewReader(conn).ReadString('\n')
if err != nil {
log.Printf("response: \n%s\n", status)
return errors.New("failed to read response from http proxy at " + paddr + ": " + err.Error())
}
if !strings.Contains(status, " 200 ") {
return errors.New("error response from http proxy at " + paddr + ": " + status)
}
// CONNECT www.google.com.au:443 HTTP/1.1
// Host: www.google.com.au:443
//
// HTTP/1.0 200 Connection Established
// Proxy-agent: Apache
sshconn, inch, inrq, err := ssh.NewClientConn(conn, paddr, &s.sshConfig)
if err != nil {
return err
}
s.connection = ssh.NewClient(sshconn, inch, inrq)
} else {
log.Printf("connect to %s", addr)
s.connection, err = ssh.Dial("tcp", addr, &s.sshConfig)
if err != nil {
return err
}
}
// start sftp
s.client, err = sftp.NewClient(s.connection)
if err != nil {
return fmt.Errorf("unable to start sftp subsytem: %v", err)
}
return nil
}
