313a46744d
* Add a 'machinectl shell' become_method * docs: add explanations for the machinectl become_method * docs: machinectl become_method: specify this part is specific to Linux+systemd setups
615 lines
25 KiB
Python
615 lines
25 KiB
Python
# -*- coding: utf-8 -*-
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# (c) 2012-2014, Michael DeHaan <michael.dehaan@gmail.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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# Make coding more python3-ish
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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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import os
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import pwd
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import random
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import re
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import string
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import sys
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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.six import iteritems
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from ansible.module_utils.six.moves import shlex_quote
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from ansible.module_utils._text import to_bytes
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from ansible.module_utils.parsing.convert_bool import boolean
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from ansible.playbook.attribute import FieldAttribute
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from ansible.playbook.base import Base
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from ansible.plugins import get_plugin_class
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from ansible.utils.ssh_functions import check_for_controlpersist
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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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__all__ = ['PlayContext']
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# TODO: needs to be configurable
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b_SU_PROMPT_LOCALIZATIONS = [
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to_bytes('Password'),
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to_bytes('암호'),
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to_bytes('パスワード'),
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to_bytes('Adgangskode'),
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to_bytes('Contraseña'),
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to_bytes('Contrasenya'),
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to_bytes('Hasło'),
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to_bytes('Heslo'),
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to_bytes('Jelszó'),
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to_bytes('Lösenord'),
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to_bytes('Mật khẩu'),
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to_bytes('Mot de passe'),
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to_bytes('Parola'),
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to_bytes('Parool'),
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to_bytes('Pasahitza'),
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to_bytes('Passord'),
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to_bytes('Passwort'),
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to_bytes('Salasana'),
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to_bytes('Sandi'),
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to_bytes('Senha'),
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to_bytes('Wachtwoord'),
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to_bytes('ססמה'),
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to_bytes('Лозинка'),
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to_bytes('Парола'),
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to_bytes('Пароль'),
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to_bytes('गुप्तशब्द'),
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to_bytes('शब्दकूट'),
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to_bytes('సంకేతపదము'),
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to_bytes('හස්පදය'),
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to_bytes('密码'),
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to_bytes('密碼'),
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to_bytes('口令'),
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]
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TASK_ATTRIBUTE_OVERRIDES = (
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'become',
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'become_user',
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'become_pass',
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'become_method',
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'become_flags',
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'connection',
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'docker_extra_args', # TODO: remove
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'delegate_to',
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'no_log',
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'remote_user',
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)
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RESET_VARS = (
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'ansible_connection',
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'ansible_user',
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'ansible_host',
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'ansible_port',
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# TODO: ???
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'ansible_docker_extra_args',
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'ansible_ssh_host',
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'ansible_ssh_pass',
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'ansible_ssh_port',
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'ansible_ssh_user',
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'ansible_ssh_private_key_file',
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'ansible_ssh_pipelining',
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'ansible_ssh_executable',
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)
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OPTION_FLAGS = ('connection', 'remote_user', 'private_key_file', 'verbosity', 'force_handlers', 'step', 'start_at_task', 'diff',
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'ssh_common_args', 'docker_extra_args', 'sftp_extra_args', 'scp_extra_args', 'ssh_extra_args')
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class PlayContext(Base):
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'''
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This class is used to consolidate the connection information for
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hosts in a play and child tasks, where the task may override some
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connection/authentication information.
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'''
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# base
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_module_compression = FieldAttribute(isa='string', default=C.DEFAULT_MODULE_COMPRESSION)
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_shell = FieldAttribute(isa='string')
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_executable = FieldAttribute(isa='string', default=C.DEFAULT_EXECUTABLE)
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# connection fields, some are inherited from Base:
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# (connection, port, remote_user, environment, no_log)
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_remote_addr = FieldAttribute(isa='string')
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_password = FieldAttribute(isa='string')
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_timeout = FieldAttribute(isa='int', default=C.DEFAULT_TIMEOUT)
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_connection_user = FieldAttribute(isa='string')
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_private_key_file = FieldAttribute(isa='string', default=C.DEFAULT_PRIVATE_KEY_FILE)
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_pipelining = FieldAttribute(isa='bool', default=C.ANSIBLE_PIPELINING)
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# networking modules
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_network_os = FieldAttribute(isa='string')
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# docker FIXME: remove these
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_docker_extra_args = FieldAttribute(isa='string')
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# ssh # FIXME: remove these
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_ssh_executable = FieldAttribute(isa='string', default=C.ANSIBLE_SSH_EXECUTABLE)
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_ssh_args = FieldAttribute(isa='string', default=C.ANSIBLE_SSH_ARGS)
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_ssh_common_args = FieldAttribute(isa='string')
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_sftp_extra_args = FieldAttribute(isa='string')
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_scp_extra_args = FieldAttribute(isa='string')
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_ssh_extra_args = FieldAttribute(isa='string')
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_ssh_transfer_method = FieldAttribute(isa='string', default=C.DEFAULT_SSH_TRANSFER_METHOD)
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# ???
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_connection_lockfd = FieldAttribute(isa='int')
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# privilege escalation fields
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_become = FieldAttribute(isa='bool')
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_become_method = FieldAttribute(isa='string')
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_become_user = FieldAttribute(isa='string')
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_become_pass = FieldAttribute(isa='string')
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_become_exe = FieldAttribute(isa='string', default=C.DEFAULT_BECOME_EXE)
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_become_flags = FieldAttribute(isa='string', default=C.DEFAULT_BECOME_FLAGS)
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_prompt = FieldAttribute(isa='string')
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# DEPRECATED: backwards compatibility fields for sudo/su
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_sudo_exe = FieldAttribute(isa='string', default=C.DEFAULT_SUDO_EXE)
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_sudo_flags = FieldAttribute(isa='string', default=C.DEFAULT_SUDO_FLAGS)
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_sudo_pass = FieldAttribute(isa='string')
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_su_exe = FieldAttribute(isa='string', default=C.DEFAULT_SU_EXE)
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_su_flags = FieldAttribute(isa='string', default=C.DEFAULT_SU_FLAGS)
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_su_pass = FieldAttribute(isa='string')
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# general flags
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_verbosity = FieldAttribute(isa='int', default=0)
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_only_tags = FieldAttribute(isa='set', default=set())
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_skip_tags = FieldAttribute(isa='set', default=set())
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_force_handlers = FieldAttribute(isa='bool', default=False)
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_start_at_task = FieldAttribute(isa='string')
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_step = FieldAttribute(isa='bool', default=False)
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# Fact gathering settings
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_gather_subset = FieldAttribute(isa='string', default=C.DEFAULT_GATHER_SUBSET)
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_gather_timeout = FieldAttribute(isa='string', default=C.DEFAULT_GATHER_TIMEOUT)
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_fact_path = FieldAttribute(isa='string', default=C.DEFAULT_FACT_PATH)
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def __init__(self, play=None, options=None, passwords=None, connection_lockfd=None):
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super(PlayContext, self).__init__()
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if passwords is None:
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passwords = {}
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self.password = passwords.get('conn_pass', '')
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self.become_pass = passwords.get('become_pass', '')
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self.prompt = ''
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self.success_key = ''
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# a file descriptor to be used during locking operations
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self.connection_lockfd = connection_lockfd
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# set options before play to allow play to override them
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if options:
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self.set_options(options)
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if play:
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self.set_play(play)
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def set_play(self, play):
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'''
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Configures this connection information instance with data from
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the play class.
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'''
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if play.connection:
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self.connection = play.connection
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if play.remote_user:
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self.remote_user = play.remote_user
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if play.port:
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self.port = int(play.port)
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if play.become is not None:
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self.become = play.become
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if play.become_method:
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self.become_method = play.become_method
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if play.become_user:
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self.become_user = play.become_user
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if play.force_handlers is not None:
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self.force_handlers = play.force_handlers
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def set_options_from_plugin(self, plugin):
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# generic derived from connection plugin, temporary for backwards compat, in the end we should not set play_context properties
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# get options for plugins
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options = C.config.get_configuration_definitions(get_plugin_class(plugin), plugin._load_name)
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for option in options:
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if option:
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flag = options[option].get('name')
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if flag:
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setattr(self, flag, self.connection.get_option(flag))
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# TODO: made irrelavent by above
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# get ssh options
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# for flag in ('ssh_common_args', 'docker_extra_args', 'sftp_extra_args', 'scp_extra_args', 'ssh_extra_args'):
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# setattr(self, flag, getattr(options, flag, ''))
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def set_options(self, options):
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'''
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Configures this connection information instance with data from
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options specified by the user on the command line. These have a
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lower precedence than those set on the play or host.
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'''
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# privilege escalation
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self.become = options.become
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self.become_method = options.become_method
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self.become_user = options.become_user
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self.check_mode = boolean(options.check, strict=False)
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self.diff = boolean(options.diff, strict=False)
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# general flags (should we move out?)
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# should only be 'non plugin' flags
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for flag in OPTION_FLAGS:
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attribute = getattr(options, flag, False)
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if attribute:
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setattr(self, flag, attribute)
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if hasattr(options, 'timeout') and options.timeout:
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self.timeout = int(options.timeout)
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# get the tag info from options. We check to see if the options have
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# the attribute, as it is not always added via the CLI
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if hasattr(options, 'tags'):
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self.only_tags.update(options.tags)
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if len(self.only_tags) == 0:
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self.only_tags = set(['all'])
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if hasattr(options, 'skip_tags'):
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self.skip_tags.update(options.skip_tags)
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def set_task_and_variable_override(self, task, variables, templar):
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'''
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Sets attributes from the task if they are set, which will override
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those from the play.
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:arg task: the task object with the parameters that were set on it
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:arg variables: variables from inventory
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:arg templar: templar instance if templating variables is needed
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'''
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new_info = self.copy()
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# loop through a subset of attributes on the task object and set
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# connection fields based on their values
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for attr in TASK_ATTRIBUTE_OVERRIDES:
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if hasattr(task, attr):
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attr_val = getattr(task, attr)
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if attr_val is not None:
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setattr(new_info, attr, attr_val)
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# next, use the MAGIC_VARIABLE_MAPPING dictionary to update this
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# connection info object with 'magic' variables from the variable list.
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# If the value 'ansible_delegated_vars' is in the variables, it means
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# we have a delegated-to host, so we check there first before looking
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# at the variables in general
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if task.delegate_to is not None:
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# In the case of a loop, the delegated_to host may have been
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# templated based on the loop variable, so we try and locate
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# the host name in the delegated variable dictionary here
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delegated_host_name = templar.template(task.delegate_to)
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delegated_vars = variables.get('ansible_delegated_vars', dict()).get(delegated_host_name, dict())
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delegated_transport = C.DEFAULT_TRANSPORT
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for transport_var in C.MAGIC_VARIABLE_MAPPING.get('connection'):
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if transport_var in delegated_vars:
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delegated_transport = delegated_vars[transport_var]
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break
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# make sure this delegated_to host has something set for its remote
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# address, otherwise we default to connecting to it by name. This
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# may happen when users put an IP entry into their inventory, or if
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# they rely on DNS for a non-inventory hostname
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for address_var in ('ansible_%s_host' % delegated_transport,) + C.MAGIC_VARIABLE_MAPPING.get('remote_addr'):
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if address_var in delegated_vars:
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break
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else:
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display.debug("no remote address found for delegated host %s\nusing its name, so success depends on DNS resolution" % delegated_host_name)
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delegated_vars['ansible_host'] = delegated_host_name
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# reset the port back to the default if none was specified, to prevent
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# the delegated host from inheriting the original host's setting
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for port_var in ('ansible_%s_port' % delegated_transport,) + C.MAGIC_VARIABLE_MAPPING.get('port'):
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if port_var in delegated_vars:
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break
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else:
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if delegated_transport == 'winrm':
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delegated_vars['ansible_port'] = 5986
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else:
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delegated_vars['ansible_port'] = C.DEFAULT_REMOTE_PORT
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# and likewise for the remote user
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for user_var in ('ansible_%s_user' % delegated_transport,) + C.MAGIC_VARIABLE_MAPPING.get('remote_user'):
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if user_var in delegated_vars and delegated_vars[user_var]:
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break
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else:
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delegated_vars['ansible_user'] = task.remote_user or self.remote_user
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else:
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delegated_vars = dict()
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# setup shell
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for exe_var in C.MAGIC_VARIABLE_MAPPING.get('executable'):
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if exe_var in variables:
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setattr(new_info, 'executable', variables.get(exe_var))
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attrs_considered = []
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for (attr, variable_names) in iteritems(C.MAGIC_VARIABLE_MAPPING):
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for variable_name in variable_names:
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if attr in attrs_considered:
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continue
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# if delegation task ONLY use delegated host vars, avoid delegated FOR host vars
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if task.delegate_to is not None:
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if isinstance(delegated_vars, dict) and variable_name in delegated_vars:
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setattr(new_info, attr, delegated_vars[variable_name])
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attrs_considered.append(attr)
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elif variable_name in variables:
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setattr(new_info, attr, variables[variable_name])
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attrs_considered.append(attr)
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# no else, as no other vars should be considered
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# become legacy updates -- from commandline
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if not new_info.become_pass:
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if new_info.become_method == 'sudo' and new_info.sudo_pass:
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new_info.become_pass = new_info.sudo_pass
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elif new_info.become_method == 'su' and new_info.su_pass:
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new_info.become_pass = new_info.su_pass
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# become legacy updates -- from inventory file (inventory overrides
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# commandline)
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for become_pass_name in C.MAGIC_VARIABLE_MAPPING.get('become_pass'):
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if become_pass_name in variables:
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break
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else: # This is a for-else
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if new_info.become_method == 'sudo':
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for sudo_pass_name in C.MAGIC_VARIABLE_MAPPING.get('sudo_pass'):
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if sudo_pass_name in variables:
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setattr(new_info, 'become_pass', variables[sudo_pass_name])
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break
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elif new_info.become_method == 'su':
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for su_pass_name in C.MAGIC_VARIABLE_MAPPING.get('su_pass'):
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if su_pass_name in variables:
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setattr(new_info, 'become_pass', variables[su_pass_name])
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break
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# make sure we get port defaults if needed
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if new_info.port is None and C.DEFAULT_REMOTE_PORT is not None:
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new_info.port = int(C.DEFAULT_REMOTE_PORT)
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# special overrides for the connection setting
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if len(delegated_vars) > 0:
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# in the event that we were using local before make sure to reset the
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# connection type to the default transport for the delegated-to host,
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# if not otherwise specified
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for connection_type in C.MAGIC_VARIABLE_MAPPING.get('connection'):
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if connection_type in delegated_vars:
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break
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else:
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remote_addr_local = new_info.remote_addr in C.LOCALHOST
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inv_hostname_local = delegated_vars.get('inventory_hostname') in C.LOCALHOST
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if remote_addr_local and inv_hostname_local:
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setattr(new_info, 'connection', 'local')
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elif getattr(new_info, 'connection', None) == 'local' and (not remote_addr_local or not inv_hostname_local):
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setattr(new_info, 'connection', C.DEFAULT_TRANSPORT)
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# if the final connection type is local, reset the remote_user value to that of the currently logged in user
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# this ensures any become settings are obeyed correctly
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# we store original in 'connection_user' for use of network/other modules that fallback to it as login user
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# connection_user to be deprecated once connection=local is removed for
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# network modules
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if new_info.connection == 'local':
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if not new_info.connection_user:
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new_info.connection_user = new_info.remote_user
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new_info.remote_user = pwd.getpwuid(os.getuid()).pw_name
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# set no_log to default if it was not previously set
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if new_info.no_log is None:
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new_info.no_log = C.DEFAULT_NO_LOG
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if task.check_mode is not None:
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new_info.check_mode = task.check_mode
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if task.diff is not None:
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new_info.diff = task.diff
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return new_info
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def make_become_cmd(self, cmd, executable=None):
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""" helper function to create privilege escalation commands """
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prompt = None
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success_key = None
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self.prompt = None
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if self.become:
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if not executable:
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executable = self.executable
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becomecmd = None
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randbits = ''.join(random.choice(string.ascii_lowercase) for x in range(32))
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success_key = 'BECOME-SUCCESS-%s' % randbits
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success_cmd = shlex_quote('echo %s; %s' % (success_key, cmd))
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if executable:
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command = '%s -c %s' % (executable, success_cmd)
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else:
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command = success_cmd
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# set executable to use for the privilege escalation method, with various overrides
|
||
exe = self.become_exe or getattr(self, '%s_exe' % self.become_method, self.become_method)
|
||
|
||
# set flags to use for the privilege escalation method, with various overrides
|
||
flags = self.become_flags or getattr(self, '%s_flags' % self.become_method, '')
|
||
|
||
if self.become_method == 'sudo':
|
||
# If we have a password, we run sudo with a randomly-generated
|
||
# prompt set using -p. Otherwise we run it with default -n, which makes
|
||
# it fail if it would have prompted for a password.
|
||
# Cannot rely on -n as it can be removed from defaults, which should be
|
||
# done for older versions of sudo that do not support the option.
|
||
#
|
||
# Passing a quoted compound command to sudo (or sudo -s)
|
||
# directly doesn't work, so we shellquote it with shlex_quote()
|
||
# and pass the quoted string to the user's shell.
|
||
|
||
# force quick error if password is required but not supplied, should prevent sudo hangs.
|
||
if self.become_pass:
|
||
prompt = '[sudo via ansible, key=%s] password: ' % randbits
|
||
becomecmd = '%s %s -p "%s" -u %s %s' % (exe, flags.replace('-n', ''), prompt, self.become_user, command)
|
||
else:
|
||
becomecmd = '%s %s -u %s %s' % (exe, flags, self.become_user, command)
|
||
|
||
elif self.become_method == 'su':
|
||
|
||
# passing code ref to examine prompt as simple string comparisson isn't good enough with su
|
||
def detect_su_prompt(b_data):
|
||
b_password_string = b"|".join([br'(\w+\'s )?' + x for x in b_SU_PROMPT_LOCALIZATIONS])
|
||
# Colon or unicode fullwidth colon
|
||
b_password_string = b_password_string + to_bytes(u' ?(:|：) ?')
|
||
b_SU_PROMPT_LOCALIZATIONS_RE = re.compile(b_password_string, flags=re.IGNORECASE)
|
||
return bool(b_SU_PROMPT_LOCALIZATIONS_RE.match(b_data))
|
||
prompt = detect_su_prompt
|
||
|
||
becomecmd = '%s %s %s -c %s' % (exe, flags, self.become_user, shlex_quote(command))
|
||
|
||
elif self.become_method == 'pbrun':
|
||
|
||
prompt = 'Password:'
|
||
becomecmd = '%s %s -u %s %s' % (exe, flags, self.become_user, success_cmd)
|
||
|
||
elif self.become_method == 'ksu':
|
||
def detect_ksu_prompt(b_data):
|
||
return re.match(b"Kerberos password for .*@.*:", b_data)
|
||
|
||
prompt = detect_ksu_prompt
|
||
becomecmd = '%s %s %s -e %s' % (exe, self.become_user, flags, command)
|
||
|
||
elif self.become_method == 'pfexec':
|
||
|
||
# No user as it uses it's own exec_attr to figure it out
|
||
becomecmd = '%s %s "%s"' % (exe, flags, success_cmd)
|
||
|
||
elif self.become_method == 'runas':
|
||
# become is handled inside the WinRM connection plugin
|
||
if not self.become_user:
|
||
raise AnsibleError(("The 'runas' become method requires a username "
|
||
"(specify with the '--become-user' CLI arg, the 'become_user' keyword, or the 'ansible_become_user' variable)"))
|
||
becomecmd = cmd
|
||
|
||
elif self.become_method == 'doas':
|
||
|
||
prompt = 'doas (%s@' % self.remote_user
|
||
exe = self.become_exe or 'doas'
|
||
|
||
if not self.become_pass:
|
||
flags += ' -n '
|
||
|
||
if self.become_user:
|
||
flags += ' -u %s ' % self.become_user
|
||
|
||
# FIXME: make shell independent
|
||
becomecmd = '%s %s %s -c %s' % (exe, flags, executable, success_cmd)
|
||
|
||
elif self.become_method == 'dzdo':
|
||
|
||
exe = self.become_exe or 'dzdo'
|
||
if self.become_pass:
|
||
prompt = '[dzdo via ansible, key=%s] password: ' % randbits
|
||
becomecmd = '%s %s -p %s -u %s %s' % (exe, flags, shlex_quote(prompt), self.become_user, command)
|
||
else:
|
||
becomecmd = '%s %s -u %s %s' % (exe, flags, self.become_user, command)
|
||
|
||
elif self.become_method == 'pmrun':
|
||
|
||
exe = self.become_exe or 'pmrun'
|
||
|
||
prompt = 'Enter UPM user password:'
|
||
becomecmd = '%s %s %s' % (exe, flags, shlex_quote(command))
|
||
|
||
elif self.become_method == 'machinectl':
|
||
|
||
exe = self.become_exe or 'machinectl'
|
||
becomecmd = '%s shell -q %s %s@ %s' % (exe, flags, self.become_user, command)
|
||
|
||
else:
|
||
raise AnsibleError("Privilege escalation method not found: %s" % self.become_method)
|
||
|
||
if self.become_pass:
|
||
self.prompt = prompt
|
||
self.success_key = success_key
|
||
return becomecmd
|
||
|
||
return cmd
|
||
|
||
def update_vars(self, variables):
|
||
'''
|
||
Adds 'magic' variables relating to connections to the variable dictionary provided.
|
||
In case users need to access from the play, this is a legacy from runner.
|
||
'''
|
||
|
||
for prop, var_list in C.MAGIC_VARIABLE_MAPPING.items():
|
||
try:
|
||
if 'become' in prop:
|
||
continue
|
||
|
||
var_val = getattr(self, prop)
|
||
for var_opt in var_list:
|
||
if var_opt not in variables and var_val is not None:
|
||
variables[var_opt] = var_val
|
||
except AttributeError:
|
||
continue
|
||
|
||
def _get_attr_connection(self):
|
||
''' connections are special, this takes care of responding correctly '''
|
||
conn_type = None
|
||
if self._attributes['connection'] == 'smart':
|
||
conn_type = 'ssh'
|
||
if sys.platform.startswith('darwin') and self.password:
|
||
# due to a current bug in sshpass on OSX, which can trigger
|
||
# a kernel panic even for non-privileged users, we revert to
|
||
# paramiko on that OS when a SSH password is specified
|
||
conn_type = "paramiko"
|
||
else:
|
||
# see if SSH can support ControlPersist if not use paramiko
|
||
if not check_for_controlpersist(self.ssh_executable):
|
||
conn_type = "paramiko"
|
||
|
||
# if someone did `connection: persistent`, default it to using a persistent paramiko connection to avoid problems
|
||
elif self._attributes['connection'] == 'persistent':
|
||
conn_type = 'paramiko'
|
||
|
||
if conn_type:
|
||
self.connection = conn_type
|
||
|
||
return self._attributes['connection']
|