Example #1
0
func NewSsn(execOutFile string, onErr chan error) *Ssn {
	var tail *cmn.CmdWrapper = nil
	if len(execOutFile) > 0 {
		tail = cmn.NewCmdWrapper(exec.Command("tail", "-f", execOutFile))
	}
	return &Ssn{
		499,
		false,
		false,
		&sync.Mutex{},
		execOutFile,
		cmn.NewCmdWrapper(exec.Command("bash")),
		tail,
		// make([]string, 0, 11),
		// make([][]*Record, 0),
		onErr,
		make(chan *Msg),
		make(chan string),
		make(chan []string),
	}
}
Example #2
0
File: ssn.go Project: tiffon/nvlv
func (ssn *nvlvSsn) Run() error {

	var err error

	ssn.shMsgBody = &clientBody{
		"sh",
		make(map[string]interface{}),
	}
	ssn.exeMsgBody = &clientBody{
		"exe",
		make(map[string]interface{}),
	}
	ssn.gdbMsgBody = &clientBody{
		"gdb",
		make(map[string]interface{}),
	}
	ssn.cmdMsgBody = &clientBody{
		"cmd",
		make(map[string]interface{}),
	}

	gdbErrChan := make(chan error)
	ssn.gdbErr = gdbErrChan
	ssn.gdbSsn = gdb.NewSsn(ssn.gdbExecOut, gdbErrChan)
	gdbInferiorOut := ssn.gdbSsn.InferiorOutput()
	gdbOutput := ssn.gdbSsn.GdbOutput()

	ssn.shCmd = cmn.NewCmdWrapper(exec.Command("bash"))
	if err = ssn.shCmd.Start(); err != nil {
		log.Println("Err: Unable to start shell command for nvlv session: ", err)
		return err
	}

	ssn.msgFromClient = make(chan *clientMsg)
	go recvJsonLoop(ssn.ws, ssn.msgFromClient)

	for {
		select {

		case m := <-ssn.shCmd.OutChan():
			if isReadErr(m.Err, "sh out stream") {
				err = m.Err
				goto endConn
			}
			ssn.shMsgBody.sendMsg(ssn.ws, m.Msg)

		case m := <-ssn.shCmd.ErrChan():
			if isReadErr(m.Err, "sh err stream") {
				err = m.Err
				goto endConn
			}
			ssn.shMsgBody.sendErr(ssn.ws, m.Msg)

		case err = <-gdbErrChan:
			log.Println("gbd err: ", err)
			ssn.gdbMsgBody.sendErr(ssn.ws, err.Error())
			goto endConn

		case s := <-gdbInferiorOut:
			ssn.exeMsgBody.sendMsg(ssn.ws, s)

		case gdbMsg := <-gdbOutput:
			ssn.lastGdbRecs = gdbMsg.Records
			ssn.gdbMsgBody.sendData(ssn.ws, gdbMsg.Records, "raw", gdbMsg.Raw)

		case m := <-ssn.msgFromClient:
			if isReadErr(m.err, "client") {
				err = m.err
				goto endConn
			}
			log.Println("msg from client:", m.data)
			err = handleMsg(ssn, m)
		}
	}

endConn:

	log.Println("Killing cmds")

	if ssn.shCmd.IsStarted() && !ssn.shCmd.IsKilled() {
		ssn.shCmd.InChan() <- "exit"
		ssn.shCmd.KillRelease()
	}
	ssn.gdbSsn.Kill()

	return err
}