/
job.go
102 lines (85 loc) · 2.42 KB
/
job.go
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package jobmgr
import (
"log"
"golang.org/x/crypto/ssh"
"strings"
// "golang.org/x/crypto/ssh/terminal"
// "os"
"github.com/gorilla/websocket"
)
/*
Define interface I_Job with only method Execute
*/
type I_Job interface {
Execute(*websocket.Conn)
}
/*
Implement I_Job
*/
type Job struct {
Machine I_Machine
Tasks []I_Task
}
/*
Formalize cmd of tasks for ssh
*/
func (job *Job) GetTaskCMD() string {
ts := []string{}
for index, _ := range job.Tasks {
task := job.Tasks[index].Serialize()
if strings.Contains(task, "sudo") && strings.Index(task, "sudo")==0 {
task = strings.Replace(task, "sudo", "MYPASS="+ job.Machine.GetSudoPassword() + " SUDO_ASKPASS=`echo $HOME`/echopass" +" sudo -A", 1)
task = "echo -e \"#! /bin/bash\necho \\$MYPASS\">echopass && chmod +x echopass && " + task + " && rm `echo $HOME`/echopass"
}
ts = append(ts, task)
}
re := strings.Join(ts, " && cd && ")
log.Println("CMD: ", re)
return re
}
/*
Get ssh session and ssh client
*/
func (job *Job) GetSSH() (*ssh.Session, *ssh.Client) {
// Get client conf according to machine conf
authConf, dest, err := job.Machine.GetAuthConf()
if err != nil {
log.Println(err)
}
client, err := ssh.Dial("tcp", dest, authConf)
if err != nil {
log.Fatal("Failed to dial: ", err)
}
// Once a Session is created, you can execute a single command on
// the remote side using the Run method.
// Set New session
session, err := client.NewSession()
if err != nil {
log.Fatal("Failed to create session: ", err)
}
modes := ssh.TerminalModes {
ssh.ECHO: 1, // disable echoing
ssh.TTY_OP_ISPEED: 14400, // input speed = 14.4kbaud
ssh.TTY_OP_OSPEED: 14400, // output speed = 14.4kbaud
}
err = session.RequestPty("xterm-256color", 55, 110, modes)
if err != nil {
log.Fatal("request for pseudo terminal failed: ", err)
}
return session, client
}
/*
Execute ssh job and communicate through websocket
*/
func (job *Job) Execute(conn *websocket.Conn) {
session, client := job.GetSSH()
defer client.Close()
defer session.Close()
syncIO(session, client, conn)
// Start remote shell
cmd := job.GetTaskCMD()
if err := session.Run(cmd); err != nil {
log.Println("failed to start shell: ", err)
return
}
}