mirror of https://github.com/openspug/spug
73 lines
2.4 KiB
Python
73 lines
2.4 KiB
Python
# Copyright: (c) OpenSpug Organization. https://github.com/openspug/spug
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# Copyright: (c) <spug.dev@gmail.com>
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# Released under the AGPL-3.0 License.
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import telnetlib
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import time
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class AuthenticationException(Exception):
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pass
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class Telnet:
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def __init__(self, hostname, port, username, password, timeout=10):
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self.hostname = hostname
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self.port = port
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self.username = username
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self.password = password
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self.timeout = timeout
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self._tn = None
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def __enter__(self):
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self.connect()
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return self
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def __exit__(self, exc_type, exc_val, exc_tb):
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self.close()
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def connect(self):
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try:
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self._tn = telnetlib.Telnet(self.hostname, self.port, self.timeout)
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# 等待登录提示
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index, match, text = self._tn.expect([b"login:", b"username:", b"Username:"], self.timeout)
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if index != -1:
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self._tn.write(self.username.encode('ascii') + b'\n')
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# 等待密码提示
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index, match, text = self._tn.expect([b"Password:", b"password:"], self.timeout)
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if index != -1:
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self._tn.write(self.password.encode('ascii') + b'\n')
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# 验证登录结果
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index, match, text = self._tn.expect([b"#", b"$", b">"], self.timeout)
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if index == -1:
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raise AuthenticationException("Authentication failed")
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else:
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raise AuthenticationException("Password prompt not found")
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else:
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raise AuthenticationException("Login prompt not found")
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except:
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if self._tn:
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self.close()
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raise
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def exec_command(self, command):
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"""执行命令并返回结果"""
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if not self._tn:
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raise RuntimeError("Not connected")
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try:
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self._tn.write(command.encode('ascii') + b'\n')
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time.sleep(0.5) # 等待命令执行
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# 读取命令输出直到提示符
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response = self._tn.read_until(b"#", self.timeout)
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return 0, response.decode('ascii')
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except:
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return 1, None
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def close(self):
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"""关闭连接"""
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if self._tn:
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self._tn.close()
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self._tn = None
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