def __init__(self, username, host, port=22, sshConfigFile=None):
"""
:type host: str
:type port: int
:type sshConfigFile: str|None
"""
self._log = logging.getLogger(__name__)
""":type: logging.Logger"""
self._username = str(username)
""":type: str"""
self._host = str(host)
""":type: str"""
self._port = int(port)
""":type: int"""
self._sshConfigFile = str(sshConfigFile) if sshConfigFile else None
""":type: str|None"""
self._promptRegex = r'^[^\s]+[>#]\s?$'
""":type: str"""
self._moreRegex = r'^.*-+\s*more\s*-+.*$'
""":type: str"""
self._authenticated = False
""":type: bool"""
self._readSinceWrite = False
""":type: bool"""
sshConfigSpec = ['-F', self._sshConfigFile
] if self._sshConfigFile else []
portSpec = ['-p', self._port
] if self._port and self._port != 22 else []
optionsSpec = ['-oStrictHostKeyChecking=no', '-oConnectTimeout=5'
] if not self._sshConfigFile else []
userHostSpec = [(username + '@' if username else '') + self._host]
args = ['ssh']
args.extend(sshConfigSpec)
args.extend(portSpec)
args.extend(optionsSpec)
args.extend(userHostSpec)
self._log.info(' '.join(args))
self._pty = PtyProcess.spawn(args,
dimensions=(SSH.SCREEN_HEIGHT,
SSH.SCREEN_WIDTH),
env={'TERM': 'vt100'})
""":type: ptyprocess.PtyProcess"""
self._vt = Screen(SSH.SCREEN_WIDTH, SSH.SCREEN_HEIGHT)
""":type: pyte.Screen"""
self._stream = ByteStream()
""":type: pyte.ByteStream"""
self._stream.attach(self._vt)
