sshutils.py 文件源码

def _posix_shell(self, chan):
        import select

        oldtty = termios.tcgetattr(sys.stdin)
        try:
            tty.setraw(sys.stdin.fileno())
            tty.setcbreak(sys.stdin.fileno())
            chan.settimeout(0.0)

            # needs to be sent to give vim correct size FIX
            # chan.send('eval $(resize)\n')

            while True:
                r, w, e = select.select([chan, sys.stdin], [], [])
                if chan in r:
                    try:
                        x = chan.recv(1024)
                        if len(x) == 0:
                            print('\r\n*** EOF\r\n'),
                            break
                        sys.stdout.write(x)
                        sys.stdout.flush()
                    except socket.timeout:
                        pass
                if sys.stdin in r:
                    # fixes up arrow problem
                    x = os.read(sys.stdin.fileno(), 1)
                    if len(x) == 0:
                        break
                    chan.send(x)
        finally:
            termios.tcsetattr(sys.stdin, termios.TCSADRAIN, oldtty)

    # thanks to Mike Looijmans for this code