You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
112 lines
4.3 KiB
Python
112 lines
4.3 KiB
Python
# Copyright 2017, David Wilson
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions are met:
|
|
#
|
|
# 1. Redistributions of source code must retain the above copyright notice, this
|
|
# list of conditions and the following disclaimer.
|
|
#
|
|
# 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
# this list of conditions and the following disclaimer in the documentation
|
|
# and/or other materials provided with the distribution.
|
|
#
|
|
# 3. Neither the name of the copyright holder nor the names of its contributors
|
|
# may be used to endorse or promote products derived from this software without
|
|
# specific prior written permission.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
|
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
import logging
|
|
import os
|
|
import time
|
|
|
|
import mitogen.core
|
|
import mitogen.parent
|
|
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
PASSWORD_PROMPT = 'password'
|
|
|
|
|
|
class PasswordError(mitogen.core.Error):
|
|
pass
|
|
|
|
|
|
class Stream(mitogen.parent.Stream):
|
|
create_child = staticmethod(mitogen.parent.tty_create_child)
|
|
sudo_path = 'sudo'
|
|
password = None
|
|
|
|
def construct(self, username=None, sudo_path=None, password=None, **kwargs):
|
|
"""
|
|
Get the named sudo context, creating it if it does not exist.
|
|
|
|
:param mitogen.core.Broker broker:
|
|
The broker that will own the context.
|
|
|
|
:param str username:
|
|
Username to pass to sudo as the ``-u`` parameter, defaults to ``root``.
|
|
|
|
:param str sudo_path:
|
|
Filename or complete path to the sudo binary. ``PATH`` will be searched
|
|
if given as a filename. Defaults to ``sudo``.
|
|
|
|
:param str python_path:
|
|
Filename or complete path to the Python binary. ``PATH`` will be
|
|
searched if given as a filename. Defaults to :py:data:`sys.executable`.
|
|
|
|
:param str password:
|
|
The password to use when authenticating to sudo. Depending on the sudo
|
|
configuration, this is either the current account password or the
|
|
target account password. :py:class:`mitogen.sudo.PasswordError` will
|
|
be raised if sudo requests a password but none is provided.
|
|
|
|
"""
|
|
super(Stream, self).construct(**kwargs)
|
|
self.username = username or 'root'
|
|
if sudo_path:
|
|
self.sudo_path = sudo_path
|
|
if password:
|
|
self.password = password
|
|
|
|
def connect(self):
|
|
super(Stream, self).connect()
|
|
self.name = 'sudo.' + self.username
|
|
|
|
def get_boot_command(self):
|
|
bits = [self.sudo_path, '-u', self.username]
|
|
bits = bits + super(Stream, self).get_boot_command()
|
|
LOG.debug('sudo command line: %r', bits)
|
|
return bits
|
|
|
|
password_incorrect_msg = 'sudo password is incorrect'
|
|
password_required_msg = 'sudo password is required'
|
|
|
|
def _connect_bootstrap(self):
|
|
password_sent = False
|
|
for buf in mitogen.parent.iter_read(self.receive_side.fd,
|
|
time.time() + 10.0):
|
|
LOG.debug('%r: received %r', self, buf)
|
|
if buf.endswith('EC0\n'):
|
|
self._ec0_received()
|
|
return
|
|
elif PASSWORD_PROMPT in buf.lower():
|
|
if self.password is None:
|
|
raise PasswordError(self.password_required_msg)
|
|
if password_sent:
|
|
raise PasswordError(self.password_incorrect_msg)
|
|
LOG.debug('sending password')
|
|
os.write(self.transmit_side.fd, self.password + '\n')
|
|
password_sent = True
|
|
else:
|
|
raise mitogen.core.StreamError('bootstrap failed')
|