74 lines
2.5 KiB
Python
74 lines
2.5 KiB
Python
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import paramiko
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import re
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class ShellHandler:
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def __init__(self, host, user, psw):
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self.ssh = paramiko.SSHClient()
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self.ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
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self.ssh.connect(host, username=user, password=psw, port=22)
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channel = self.ssh.invoke_shell()
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self.stdin = channel.makefile('wb')
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self.stdout = channel.makefile('r')
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def __del__(self):
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self.ssh.close()
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def execute(self, cmd):
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"""
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:param cmd: the command to be executed on the remote computer
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:examples: execute('ls')
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execute('finger')
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execute('cd folder_name')
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"""
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cmd = cmd.strip('\n')
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self.stdin.write(cmd + '\n')
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finish = 'end of stdOUT buffer. finished with exit status'
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echo_cmd = 'echo {} $?'.format(finish)
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self.stdin.write(echo_cmd + '\n')
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shin = self.stdin
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self.stdin.flush()
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shout = []
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sherr = []
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exit_status = 0
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for line in self.stdout:
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if str(line).startswith(cmd) or str(line).startswith(echo_cmd):
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# up for now filled with shell junk from stdin
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shout = []
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elif str(line).startswith(finish):
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# our finish command ends with the exit status
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exit_status = int(str(line).rsplit(maxsplit=1)[1])
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if exit_status:
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# stderr is combined with stdout.
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# thus, swap sherr with shout in a case of failure.
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sherr = shout
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shout = []
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break
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else:
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# get rid of 'coloring and formatting' special characters
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shout.append(re.compile(r'(\x9B|\x1B\[)[0-?]*[ -/]*[@-~]').sub('', line).
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replace('\b', '').replace('\r', ''))
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s = ShellHandler('linux-lab-055.ece.uw.edu', 'hyu3', ':Eric200002182919')
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s.execute("vncserver -list")
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# ssh = paramiko.SSHClient()
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# ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
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# # linux-lab-055.ece.uw.edu
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# ssh.connect("linux-lab-055.ece.uw.edu", username="hyu3", password=":Eric200002182919")
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# ssh_stdin, ssh_stdout, ssh_stderr = ssh.exec_command("vncserver -list")
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#
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# xdisplay = ssh_stdout.readlines()[-1]
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#
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# if "DISPLAY" in xdisplay:
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# ssh_stdin, ssh_stdout, ssh_stderr = ssh.exec_command('vncserver -interface 0.0.0.0 && vncserver -list')
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# xdisplay = ssh_stdout.readlines()[-1]
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#
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# print(xdisplay.split()[0][1:])
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