# coding: utf-8 -*- # Based on local.py (c) 2012, Michael DeHaan # and chroot.py (c) 2013, Maykel Moya # and jail.py (c) 2013, Michael Scherer # (c) 2015, Dagobert Michelsen # (c) 2015, Toshio Kuratomi # Copyright (c) 2017 Ansible Project # GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt) from __future__ import (absolute_import, division, print_function) __metaclass__ = type DOCUMENTATION = ''' author: Ansible Core Team name: zone short_description: Run tasks in a zone instance description: - Run commands or put/fetch files to an existing zone options: remote_addr: description: - Zone identifier default: inventory_hostname vars: - name: ansible_host - name: ansible_zone_host ''' import distutils.spawn import os import os.path import subprocess import traceback from ansible import constants as C from ansible.errors import AnsibleError from ansible.module_utils.six.moves import shlex_quote from ansible.module_utils._text import to_bytes from ansible.plugins.connection import ConnectionBase, BUFSIZE from ansible.utils.display import Display display = Display() class Connection(ConnectionBase): ''' Local zone based connections ''' transport = 'community.general.zone' has_pipelining = True has_tty = False def __init__(self, play_context, new_stdin, *args, **kwargs): super(Connection, self).__init__(play_context, new_stdin, *args, **kwargs) self.zone = self._play_context.remote_addr if os.geteuid() != 0: raise AnsibleError("zone connection requires running as root") self.zoneadm_cmd = to_bytes(self._search_executable('zoneadm')) self.zlogin_cmd = to_bytes(self._search_executable('zlogin')) if self.zone not in self.list_zones(): raise AnsibleError("incorrect zone name %s" % self.zone) @staticmethod def _search_executable(executable): cmd = distutils.spawn.find_executable(executable) if not cmd: raise AnsibleError("%s command not found in PATH" % executable) return cmd def list_zones(self): process = subprocess.Popen([self.zoneadm_cmd, 'list', '-ip'], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE) zones = [] for l in process.stdout.readlines(): # 1:work:running:/zones/work:3126dc59-9a07-4829-cde9-a816e4c5040e:native:shared s = l.split(':') if s[1] != 'global': zones.append(s[1]) return zones def get_zone_path(self): # solaris10vm# zoneadm -z cswbuild list -p # -:cswbuild:installed:/zones/cswbuild:479f3c4b-d0c6-e97b-cd04-fd58f2c0238e:native:shared process = subprocess.Popen([self.zoneadm_cmd, '-z', to_bytes(self.zone), 'list', '-p'], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE) # stdout, stderr = p.communicate() path = process.stdout.readlines()[0].split(':')[3] return path + '/root' def _connect(self): ''' connect to the zone; nothing to do here ''' super(Connection, self)._connect() if not self._connected: display.vvv("THIS IS A LOCAL ZONE DIR", host=self.zone) self._connected = True def _buffered_exec_command(self, cmd, stdin=subprocess.PIPE): ''' run a command on the zone. This is only needed for implementing put_file() get_file() so that we don't have to read the whole file into memory. compared to exec_command() it looses some niceties like being able to return the process's exit code immediately. ''' # NOTE: zlogin invokes a shell (just like ssh does) so we do not pass # this through /bin/sh -c here. Instead it goes through the shell # that zlogin selects. local_cmd = [self.zlogin_cmd, self.zone, cmd] local_cmd = map(to_bytes, local_cmd) display.vvv("EXEC %s" % (local_cmd), host=self.zone) p = subprocess.Popen(local_cmd, shell=False, stdin=stdin, stdout=subprocess.PIPE, stderr=subprocess.PIPE) return p def exec_command(self, cmd, in_data=None, sudoable=False): ''' run a command on the zone ''' super(Connection, self).exec_command(cmd, in_data=in_data, sudoable=sudoable) p = self._buffered_exec_command(cmd) stdout, stderr = p.communicate(in_data) return (p.returncode, stdout, stderr) def _prefix_login_path(self, remote_path): ''' Make sure that we put files into a standard path If a path is relative, then we need to choose where to put it. ssh chooses $HOME but we aren't guaranteed that a home dir will exist in any given chroot. So for now we're choosing "/" instead. This also happens to be the former default. Can revisit using $HOME instead if it's a problem ''' if not remote_path.startswith(os.path.sep): remote_path = os.path.join(os.path.sep, remote_path) return os.path.normpath(remote_path) def put_file(self, in_path, out_path): ''' transfer a file from local to zone ''' super(Connection, self).put_file(in_path, out_path) display.vvv("PUT %s TO %s" % (in_path, out_path), host=self.zone) out_path = shlex_quote(self._prefix_login_path(out_path)) try: with open(in_path, 'rb') as in_file: if not os.fstat(in_file.fileno()).st_size: count = ' count=0' else: count = '' try: p = self._buffered_exec_command('dd of=%s bs=%s%s' % (out_path, BUFSIZE, count), stdin=in_file) except OSError: raise AnsibleError("jail connection requires dd command in the jail") try: stdout, stderr = p.communicate() except Exception: traceback.print_exc() raise AnsibleError("failed to transfer file %s to %s" % (in_path, out_path)) if p.returncode != 0: raise AnsibleError("failed to transfer file %s to %s:\n%s\n%s" % (in_path, out_path, stdout, stderr)) except IOError: raise AnsibleError("file or module does not exist at: %s" % in_path) def fetch_file(self, in_path, out_path): ''' fetch a file from zone to local ''' super(Connection, self).fetch_file(in_path, out_path) display.vvv("FETCH %s TO %s" % (in_path, out_path), host=self.zone) in_path = shlex_quote(self._prefix_login_path(in_path)) try: p = self._buffered_exec_command('dd if=%s bs=%s' % (in_path, BUFSIZE)) except OSError: raise AnsibleError("zone connection requires dd command in the zone") with open(out_path, 'wb+') as out_file: try: chunk = p.stdout.read(BUFSIZE) while chunk: out_file.write(chunk) chunk = p.stdout.read(BUFSIZE) except Exception: traceback.print_exc() raise AnsibleError("failed to transfer file %s to %s" % (in_path, out_path)) stdout, stderr = p.communicate() if p.returncode != 0: raise AnsibleError("failed to transfer file %s to %s:\n%s\n%s" % (in_path, out_path, stdout, stderr)) def close(self): ''' terminate the connection; nothing to do here ''' super(Connection, self).close() self._connected = False