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|
package main
import (
"fmt"
"net"
"os"
"os/exec"
"golang.org/x/crypto/ssh"
)
func shell(conn net.Conn, config *ssh.ServerConfig) {
sshConn, chans, reqs, err := ssh.NewServerConn(conn, config)
if err != nil {
fmt.Println("不能创建连接:", err)
return
}
defer sshConn.Close()
fmt.Println("New connection from", sshConn.RemoteAddr(), "with client version", sshConn.ClientVersion())
go ssh.DiscardRequests(reqs)
for newChannel := range chans {
if newChannel.ChannelType() != "session" {
newChannel.Reject(ssh.UnknownChannelType, "unknown channel type")
continue
}
channel, requests, err := newChannel.Accept()
if err != nil {
fmt.Println("Can not accept channel:", err)
continue
}
defer channel.Close()
shell := os.Getenv("SHELL")
if shell == "" {
shell = "cmd.exe"
}
command := exec.Command(shell)
command.Stdin = channel
command.Stdout = channel
command.Stderr = channel
if err := command.Start(); err != nil {
fmt.Println("Failed to start shell:", err)
return
}
go func() {
if err := command.Wait(); err != nil {
fmt.Println("Run shell failed:", err)
}
channel.Close()
}()
go func() {
for req := range requests {
switch req.Type {
case "shell":
req.Reply(true, nil)
default:
req.Reply(false, nil)
}
}
}()
}
}
|
