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[project @ Arch-1:robey@lag.net--2003-public%secsh--dev--1.0--patch-35] 

add send_ignore
add send_ignore() call to allow for sending garbage ignored packets to the
remote side.
This commit is contained in:
Robey Pointer 2004-04-02 02:41:43 +00:00
parent f8a3a62136
commit d757f90ac5
1 changed files with 20 additions and 2 deletions
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22
paramiko/transport.py
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@ -453,7 +453,25 @@ class BaseTransport (threading.Thread):
finally: finally:
self.lock.release() self.lock.release()
return chan return chan
def send_ignore(self, bytes=None):
"""
Send a junk packet across the encrypted link. This is sometimes used
to add "noise" to a connection to confuse would-be attackers. It can
also be used as a keep-alive for long lived connections traversing
firewalls.
@param bytes: the number of random bytes to send in the payload of the
ignored packet -- defaults to a random number from 10 to 41.
@type bytes: int
"""
m = Message()
m.add_byte(chr(_MSG_IGNORE))
if bytes is None:
bytes = (ord(randpool.get_bytes(1)) % 32) + 10
m.add_bytes(randpool.get_bytes(bytes))
self._send_message(m)
def renegotiate_keys(self): def renegotiate_keys(self):
""" """
Force this session to switch to new keys. Normally this is done Force this session to switch to new keys. Normally this is done
@ -595,7 +613,7 @@ class BaseTransport (threading.Thread):
self._log(DEBUG, 'Attempting password auth...') self._log(DEBUG, 'Attempting password auth...')
self.auth_password(username, password, event) self.auth_password(username, password, event)
else: else:
self._log(DEBUG, 'Attempting password auth...') self._log(DEBUG, 'Attempting pkey auth...')
self.auth_publickey(username, pkey, event) self.auth_publickey(username, pkey, event)
while 1: while 1:
event.wait(0.1) event.wait(0.1)