184 lines
7.1 KiB
Python
184 lines
7.1 KiB
Python
# Based on local.py (c) 2012, Michael DeHaan <michael.dehaan@gmail.com>
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# and chroot.py (c) 2013, Maykel Moya <mmoya@speedyrails.com>
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# (c) 2013, Michael Scherer <misc@zarb.org>
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# (c) 2015, Toshio Kuratomi <tkuratomi@ansible.com>
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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import distutils.spawn
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import traceback
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import os
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import shlex
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import subprocess
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from ansible import errors
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from ansible.utils.unicode import to_bytes
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from ansible.callbacks import vvv
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import ansible.constants as C
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BUFSIZE = 65536
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class Connection(object):
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''' Local BSD Jail based connections '''
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def _search_executable(self, executable):
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cmd = distutils.spawn.find_executable(executable)
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if not cmd:
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raise errors.AnsibleError("%s command not found in PATH") % executable
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return cmd
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def list_jails(self):
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p = subprocess.Popen([self.jls_cmd, '-q', 'name'],
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cwd=self.runner.basedir,
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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stdout, stderr = p.communicate()
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return stdout.split()
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def get_jail_path(self):
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p = subprocess.Popen([self.jls_cmd, '-j', self.jail, '-q', 'path'],
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cwd=self.runner.basedir,
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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stdout, stderr = p.communicate()
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# remove \n
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return stdout[:-1]
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def __init__(self, runner, host, port, *args, **kwargs):
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self.jail = host
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self.runner = runner
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self.host = host
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self.has_pipelining = False
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self.become_methods_supported=C.BECOME_METHODS
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if os.geteuid() != 0:
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raise errors.AnsibleError("jail connection requires running as root")
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self.jls_cmd = self._search_executable('jls')
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self.jexec_cmd = self._search_executable('jexec')
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if not self.jail in self.list_jails():
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raise errors.AnsibleError("incorrect jail name %s" % self.jail)
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self.host = host
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# port is unused, since this is local
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self.port = port
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def connect(self, port=None):
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''' connect to the jail; nothing to do here '''
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vvv("THIS IS A LOCAL JAIL DIR", host=self.jail)
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return self
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# a modifier
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def _generate_cmd(self, executable, cmd):
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if executable:
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local_cmd = [self.jexec_cmd, self.jail, executable, '-c', cmd]
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else:
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# Prev to python2.7.3, shlex couldn't handle unicode type strings
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cmd = to_bytes(cmd)
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cmd = shlex.split(cmd)
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local_cmd = [self.jexec_cmd, self.jail]
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local_cmd += cmd
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return local_cmd
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def _buffered_exec_command(self, cmd, tmp_path, become_user=None, sudoable=False, executable='/bin/sh', in_data=None, stdin=subprocess.PIPE):
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''' run a command on the jail. This is only needed for implementing
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put_file() get_file() so that we don't have to read the whole file
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into memory.
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compared to exec_command() it looses some niceties like being able to
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return the process's exit code immediately.
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'''
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if sudoable and self.runner.become and self.runner.become_method not in self.become_methods_supported:
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raise errors.AnsibleError("Internal Error: this module does not support running commands via %s" % self.runner.become_method)
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if in_data:
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raise errors.AnsibleError("Internal Error: this module does not support optimized module pipelining")
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# We enter zone as root so we ignore privilege escalation (probably need to fix in case we have to become a specific used [ex: postgres admin])?
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local_cmd = self._generate_cmd(executable, cmd)
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vvv("EXEC %s" % (local_cmd), host=self.jail)
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p = subprocess.Popen(local_cmd, shell=False,
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cwd=self.runner.basedir,
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stdin=stdin,
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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return p
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def exec_command(self, cmd, tmp_path, become_user=None, sudoable=False, executable='/bin/sh', in_data=None):
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''' run a command on the jail '''
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p = self._buffered_exec_command(cmd, tmp_path, become_user, sudoable, executable, in_data)
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stdout, stderr = p.communicate()
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return (p.returncode, '', stdout, stderr)
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def put_file(self, in_path, out_path):
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''' transfer a file from local to jail '''
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vvv("PUT %s TO %s" % (in_path, out_path), host=self.jail)
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try:
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with open(in_path, 'rb') as in_file:
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try:
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p = self._buffered_exec_command('dd of=%s bs=%s' % (out_path, BUFSIZE), None, stdin=in_file)
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except OSError:
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raise errors.AnsibleError("jail connection requires dd command in the jail")
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try:
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stdout, stderr = p.communicate()
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except:
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traceback.print_exc()
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raise errors.AnsibleError("failed to transfer file %s to %s" % (in_path, out_path))
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if p.returncode != 0:
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raise errors.AnsibleError("failed to transfer file %s to %s:\n%s\n%s" % (in_path, out_path, stdout, stderr))
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except IOError:
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raise errors.AnsibleError("file or module does not exist at: %s" % in_path)
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def fetch_file(self, in_path, out_path):
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''' fetch a file from jail to local '''
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vvv("FETCH %s TO %s" % (in_path, out_path), host=self.jail)
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try:
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p = self._buffered_exec_command('dd if=%s bs=%s' % (in_path, BUFSIZE), None)
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except OSError:
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raise errors.AnsibleError("jail connection requires dd command in the jail")
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with open(out_path, 'wb+') as out_file:
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try:
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chunk = p.stdout.read(BUFSIZE)
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while chunk:
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out_file.write(chunk)
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chunk = p.stdout.read(BUFSIZE)
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except:
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traceback.print_exc()
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raise errors.AnsibleError("failed to transfer file %s to %s" % (in_path, out_path))
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stdout, stderr = p.communicate()
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if p.returncode != 0:
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raise errors.AnsibleError("failed to transfer file %s to %s:\n%s\n%s" % (in_path, out_path, stdout, stderr))
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def close(self):
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''' terminate the connection; nothing to do here '''
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pass
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