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https://github.com/ansible-collections/community.general.git
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4ed88512e4
We couldn't copy to_unicode, to_bytes, to_str into module_utils because of licensing. So once created it we had two sets of functions that did the same things but had different implementations. To remedy that, this change removes the ansible.utils.unicode versions of those functions.
176 lines
7.1 KiB
Python
176 lines
7.1 KiB
Python
# Based on local.py (c) 2012, Michael DeHaan <michael.dehaan@gmail.com>
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# Based on 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 os
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import os.path
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import pipes
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import subprocess
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import traceback
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from ansible import constants as C
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from ansible.errors import AnsibleError
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from ansible.module_utils._text import to_bytes
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from ansible.plugins.connection import ConnectionBase, BUFSIZE
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try:
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from __main__ import display
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except ImportError:
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from ansible.utils.display import Display
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display = Display()
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class Connection(ConnectionBase):
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''' Local lxc based connections '''
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transport = 'libvirt_lxc'
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has_pipelining = True
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# su currently has an undiagnosed issue with calculating the file
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# checksums (so copy, for instance, doesn't work right)
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# Have to look into that before re-enabling this
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become_methods = frozenset(C.BECOME_METHODS).difference(('su',))
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def __init__(self, play_context, new_stdin, *args, **kwargs):
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super(Connection, self).__init__(play_context, new_stdin, *args, **kwargs)
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self.lxc = self._play_context.remote_addr
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self.virsh = self._search_executable('virsh')
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self._check_domain(self.lxc)
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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 AnsibleError("%s command not found in PATH") % executable
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return cmd
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def _check_domain(self, domain):
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p = subprocess.Popen([self.virsh, '-q', '-c', 'lxc:///', 'dominfo', to_bytes(domain)],
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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p.communicate()
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if p.returncode:
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raise AnsibleError("%s is not a lxc defined in libvirt" % domain)
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def _connect(self):
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''' connect to the lxc; nothing to do here '''
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super(Connection, self)._connect()
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if not self._connected:
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display.vvv("THIS IS A LOCAL LXC DIR", host=self.lxc)
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self._connected = True
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def _buffered_exec_command(self, cmd, stdin=subprocess.PIPE):
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''' run a command on the chroot. 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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executable = C.DEFAULT_EXECUTABLE.split()[0] if C.DEFAULT_EXECUTABLE else '/bin/sh'
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local_cmd = [self.virsh, '-q', '-c', 'lxc:///', 'lxc-enter-namespace']
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if C.DEFAULT_LIBVIRT_LXC_NOSECLABEL:
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local_cmd += ['--noseclabel']
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local_cmd += [self.lxc, '--', executable, '-c', cmd]
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display.vvv("EXEC %s" % (local_cmd,), host=self.lxc)
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local_cmd = [to_bytes(i, errors='surrogate_or_strict') for i in local_cmd]
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p = subprocess.Popen(local_cmd, shell=False, 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, in_data=None, sudoable=False):
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''' run a command on the chroot '''
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super(Connection, self).exec_command(cmd, in_data=in_data, sudoable=sudoable)
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p = self._buffered_exec_command(cmd)
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stdout, stderr = p.communicate(in_data)
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return (p.returncode, stdout, stderr)
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def _prefix_login_path(self, remote_path):
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''' Make sure that we put files into a standard path
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If a path is relative, then we need to choose where to put it.
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ssh chooses $HOME but we aren't guaranteed that a home dir will
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exist in any given chroot. So for now we're choosing "/" instead.
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This also happens to be the former default.
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Can revisit using $HOME instead if it's a problem
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'''
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if not remote_path.startswith(os.path.sep):
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remote_path = os.path.join(os.path.sep, remote_path)
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return os.path.normpath(remote_path)
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def put_file(self, in_path, out_path):
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''' transfer a file from local to lxc '''
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super(Connection, self).put_file(in_path, out_path)
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display.vvv("PUT %s TO %s" % (in_path, out_path), host=self.lxc)
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out_path = pipes.quote(self._prefix_login_path(out_path))
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try:
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with open(to_bytes(in_path, errors='surrogate_or_strict'), '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), stdin=in_file)
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except OSError:
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raise AnsibleError("chroot connection requires dd command in the chroot")
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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 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 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 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 lxc to local '''
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super(Connection, self).fetch_file(in_path, out_path)
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display.vvv("FETCH %s TO %s" % (in_path, out_path), host=self.lxc)
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in_path = pipes.quote(self._prefix_login_path(in_path))
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try:
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p = self._buffered_exec_command('dd if=%s bs=%s' % (in_path, BUFSIZE))
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except OSError:
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raise AnsibleError("chroot connection requires dd command in the chroot")
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with open(to_bytes(out_path, errors='surrogate_or_strict'), '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 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 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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super(Connection, self).close()
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self._connected = False
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