Revision ee4bb099 ncclient/ssh.py
| b/ncclient/ssh.py | ||
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# limitations under the License. |
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import logging |
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import paramiko |
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from os import SEEK_CUR |
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from cStringIO import StringIO |
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from os import SEEK_CUR |
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import paramiko |
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from session import Session, SessionError |
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missing_host_key_policy=paramiko.RejectPolicy): |
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Session.__init__(self) |
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self._client = paramiko.SSHClient() |
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self._channel = None |
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if load_known_hosts: |
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self._client.load_system_host_keys() |
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self._client.set_missing_host_key_policy(missing_host_key_policy) |
| ... | ... | |
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self._parsing_state = 0 |
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self._parsing_pos = 0 |
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def _close(self): |
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self._channel.close() |
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self._connected = False |
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def _fresh_data(self): |
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delim = SSHSession.MSG_DELIM |
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n = len(delim) - 1 |
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state = self._parsing_state |
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buf = self._in_buf |
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buf.seek(self._parsing_pos) |
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while True: |
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x = buf.read(1) |
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if not x: # done reading |
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break |
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elif x == delim[state]: |
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state += 1 |
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else: |
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continue |
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# loop till last delim char expected, break if other char encountered |
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for i in range(state, n): |
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x = buf.read(1) |
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if not x: # done reading |
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break |
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if x==delim[i]: # what we expected |
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state += 1 # expect the next delim char |
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else: |
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state = 0 # reset |
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break |
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else: # if we didn't break out of above loop, full delim parsed |
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till = buf.tell() - n |
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buf.seek(0) |
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msg = buf.read(till) |
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self.dispatch('reply', msg)
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buf.seek(n+1, SEEK_CUR) |
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rest = buf.read() |
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buf = StringIO() |
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buf.write(rest) |
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buf.seek(0) |
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state = 0 |
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self._in_buf = buf |
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self._parsing_state = state |
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self._parsing_pos = self._in_buf.tell() |
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def load_host_keys(self, filename): |
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self._client.load_host_keys(filename) |
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|
| ... | ... | |
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except Exception as e: |
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logger.debug('*** broke out of main loop ***')
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self.dispatch('error', e)
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def _close(self): |
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self._channel.close() |
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self._connected = False |
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def _fresh_data(self): |
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delim = SSHSession.MSG_DELIM |
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n = len(delim) - 1 |
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state = self._parsing_state |
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buf = self._in_buf |
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buf.seek(self._parsing_pos) |
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while True: |
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x = buf.read(1) |
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if not x: # done reading |
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break |
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elif x == delim[state]: |
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state += 1 |
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else: |
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continue |
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# loop till last delim char expected, break if other char encountered |
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for i in range(state, n): |
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x = buf.read(1) |
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if not x: # done reading |
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break |
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if x==delim[i]: # what we expected |
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state += 1 # expect the next delim char |
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else: |
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state = 0 # reset |
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break |
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else: # if we didn't break out of above loop, full delim parsed |
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till = buf.tell() - n |
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buf.seek(0) |
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msg = buf.read(till) |
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self.dispatch('reply', msg)
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buf.seek(n+1, SEEK_CUR) |
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rest = buf.read() |
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buf = StringIO() |
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buf.write(rest) |
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buf.seek(0) |
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state = 0 |
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self._in_buf = buf |
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self._parsing_state = state |
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self._parsing_pos = self._in_buf.tell() |
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class MissingHostKeyPolicy(paramiko.MissingHostKeyPolicy): |
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Also available in: Unified diff