# -*- coding: utf-8 -*-
# (c) 2012-2014, Michael DeHaan <michael.dehaan@gmail.com>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
# Make coding more python3-ish
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
from ansible import constants as C
from ansible import context
from ansible.module_utils.compat.paramiko import paramiko
from ansible.playbook.attribute import FieldAttribute
from ansible.playbook.base import Base
from ansible.utils.display import Display
from ansible.utils.ssh_functions import check_for_controlpersist
display = Display()
__all__ = ['PlayContext']
TASK_ATTRIBUTE_OVERRIDES = (
'become',
'become_user',
'become_pass',
'become_method',
'become_flags',
'connection',
'docker_extra_args', # TODO: remove
'delegate_to',
'no_log',
'remote_user',
)
RESET_VARS = (
'ansible_connection',
'ansible_user',
'ansible_host',
'ansible_port',
# TODO: ???
'ansible_docker_extra_args',
'ansible_ssh_host',
'ansible_ssh_pass',
'ansible_ssh_port',
'ansible_ssh_user',
'ansible_ssh_private_key_file',
'ansible_ssh_pipelining',
'ansible_ssh_executable',
)
class PlayContext(Base):
'''
This class is used to consolidate the connection information for
hosts in a play and child tasks, where the task may override some
connection/authentication information.
'''
# base
module_compression = FieldAttribute(isa='string', default=C.DEFAULT_MODULE_COMPRESSION)
shell = FieldAttribute(isa='string')
executable = FieldAttribute(isa='string', default=C.DEFAULT_EXECUTABLE)
# connection fields, some are inherited from Base:
# (connection, port, remote_user, environment, no_log)
remote_addr = FieldAttribute(isa='string')
password = FieldAttribute(isa='string')
timeout = FieldAttribute(isa='int', default=C.DEFAULT_TIMEOUT)
connection_user = FieldAttribute(isa='string')
private_key_file = FieldAttribute(isa='string', default=C.DEFAULT_PRIVATE_KEY_FILE)
pipelining = FieldAttribute(isa='bool', default=C.ANSIBLE_PIPELINING)
# networking modules
network_os = FieldAttribute(isa='string')
# docker FIXME: remove these
docker_extra_args = FieldAttribute(isa='string')
# ???
connection_lockfd = FieldAttribute(isa='int')
# privilege escalation fields
become = FieldAttribute(isa='bool')
become_method = FieldAttribute(isa='string')
become_user = FieldAttribute(isa='string')
become_pass = FieldAttribute(isa='string')
become_exe = FieldAttribute(isa='string', default=C.DEFAULT_BECOME_EXE)
become_flags = FieldAttribute(isa='string', default=C.DEFAULT_BECOME_FLAGS)
prompt = FieldAttribute(isa='string')
# general flags
only_tags = FieldAttribute(isa='set', default=set)
skip_tags = FieldAttribute(isa='set', default=set)
start_at_task = FieldAttribute(isa='string')
step = FieldAttribute(isa='bool', default=False)
# "PlayContext.force_handlers should not be used, the calling code should be using play itself instead"
force_handlers = FieldAttribute(isa='bool', default=False)
@property
def verbosity(self):
display.deprecated(
"PlayContext.verbosity is deprecated, use ansible.utils.display.Display.verbosity instead.",
version=2.18
)
return self._internal_verbosity
@verbosity.setter
def verbosity(self, value):
display.deprecated(
"PlayContext.verbosity is deprecated, use ansible.utils.display.Display.verbosity instead.",
version=2.18
)
self._internal_verbosity = value
def __init__(self, play=None, passwords=None, connection_lockfd=None):
# Note: play is really not optional. The only time it could be omitted is when we create
# a PlayContext just so we can invoke its deserialize method to load it from a serialized
# data source.
super(PlayContext, self).__init__()
if passwords is None:
passwords = {}
self.password = passwords.get('conn_pass', '')
self.become_pass = passwords.get('become_pass', '')
self._become_plugin = None
self.prompt = ''
self.success_key = ''
# a file descriptor to be used during locking operations
self.connection_lockfd = connection_lockfd
# set options before play to allow play to override them
if context.CLIARGS:
self.set_attributes_from_cli()
else:
self._internal_verbosity = 0
if play:
self.set_attributes_from_play(play)
def set_attributes_from_plugin(self, plugin):
# generic derived from connection plugin, temporary for backwards compat, in the end we should not set play_context properties
# get options for plugins
options = C.config.get_configuration_definitions(plugin.plugin_type, plugin._load_name)
for option in options:
if option:
flag = options[option].get('name')
if flag:
setattr(self, flag, plugin.get_option(flag))
def set_attributes_from_play(self, play):
self.force_handlers = play.force_handlers
def set_attributes_from_cli(self):
'''
Configures this connection information instance with data from
options specified by the user on the command line. These have a
lower precedence than those set on the play or host.
'''
if context.CLIARGS.get('timeout', False):
self.timeout = int(context.CLIARGS['timeout'])
# From the command line. These should probably be used directly by plugins instead
# For now, they are likely to be moved to FieldAttribute defaults
self.private_key_file = context.CLIARGS.get('private_key_file') # Else default
self._internal_verbosity = context.CLIARGS.get('verbosity') # Else default
# Not every cli that uses PlayContext has these command line args so have a default
self.start_at_task = context.CLIARGS.get('start_at_task', None) # Else default
def set_task_and_variable_override(self, task, variables, templar):
'''
Sets attributes from the task if they are set, which will override
those from the play.
:arg task: the task object with the parameters that were set on it
:arg variables: variables from inventory
:arg templar: templar instance if templating variables is needed
'''
new_info = self.copy()
# loop through a subset of attributes on the task object and set
# connection fields based on their values
for attr in TASK_ATTRIBUTE_OVERRIDES:
if (attr_val := getattr(task, attr, None)) is not None:
setattr(new_info, attr, attr_val)
# next, use the MAGIC_VARIABLE_MAPPING dictionary to update this
# connection info object with 'magic' variables from the variable list.
# If the value 'ansible_delegated_vars' is in the variables, it means
# we have a delegated-to host, so we check there first before looking
# at the variables in general
if task.delegate_to is not None:
# In the case of a loop, the delegated_to host may have been
# templated based on the loop variable, so we try and locate
# the host name in the delegated variable dictionary here
delegated_host_name = templar.template(task.delegate_to)
delegated_vars = variables.get('ansible_delegated_vars', dict()).get(delegated_host_name, dict())
delegated_transport = C.DEFAULT_TRANSPORT
for transport_var in C.MAGIC_VARIABLE_MAPPING.get('connection'):
if transport_var in delegated_vars:
delegated_transport = delegated_vars[transport_var]
break
# make sure this delegated_to host has something set for its remote
# address, otherwise we default to connecting to it by name. This
# may happen when users put an IP entry into their inventory, or if
# they rely on DNS for a non-inventory hostname
for address_var in ('ansible_%s_host' % delegated_transport,) + C.MAGIC_VARIABLE_MAPPING.get('remote_addr'):
if address_var in delegated_vars:
break
else:
display.debug("no remote address found for delegated host %s\nusing its name, so success depends on DNS resolution" % delegated_host_name)
delegated_vars['ansible_host'] = delegated_host_name
# reset the port back to the default if none was specified, to prevent
# the delegated host from inheriting the original host's setting
for port_var in ('ansible_%s_port' % delegated_transport,) + C.MAGIC_VARIABLE_MAPPING.get('port'):
if port_var in delegated_vars:
break
else:
if delegated_transport == 'winrm':
delegated_vars['ansible_port'] = 5986
else:
delegated_vars['ansible_port'] = C.DEFAULT_REMOTE_PORT
# and likewise for the remote user
for user_var in ('ansible_%s_user' % delegated_transport,) + C.MAGIC_VARIABLE_MAPPING.get('remote_user'):
if user_var in delegated_vars and delegated_vars[user_var]:
break
else:
delegated_vars['ansible_user'] = task.remote_user or self.remote_user
else:
delegated_vars = dict()
# setup shell
for exe_var in C.MAGIC_VARIABLE_MAPPING.get('executable'):
if exe_var in variables:
setattr(new_info, 'executable', variables.get(exe_var))
attrs_considered = []
for (attr, variable_names) in C.MAGIC_VARIABLE_MAPPING.items():
for variable_name in variable_names:
if attr in attrs_considered:
continue
# if delegation task ONLY use delegated host vars, avoid delegated FOR host vars
if task.delegate_to is not None:
if isinstance(delegated_vars, dict) and variable_name in delegated_vars:
setattr(new_info, attr, delegated_vars[variable_name])
attrs_considered.append(attr)
elif variable_name in variables:
setattr(new_info, attr, variables[variable_name])
attrs_considered.append(attr)
# no else, as no other vars should be considered
# become legacy updates -- from inventory file (inventory overrides
# commandline)
for become_pass_name in C.MAGIC_VARIABLE_MAPPING.get('become_pass'):
if become_pass_name in variables:
break
# make sure we get port defaults if needed
if new_info.port is None and C.DEFAULT_REMOTE_PORT is not None:
new_info.port = int(C.DEFAULT_REMOTE_PORT)
# special overrides for the connection setting
if len(delegated_vars) > 0:
# in the event that we were using local before make sure to reset the
# connection type to the default transport for the delegated-to host,
# if not otherwise specified
for connection_type in C.MAGIC_VARIABLE_MAPPING.get('connection'):
if connection_type in delegated_vars:
break
else:
remote_addr_local = new_info.remote_addr in C.LOCALHOST
inv_hostname_local = delegated_vars.get('inventory_hostname') in C.LOCALHOST
if remote_addr_local and inv_hostname_local:
setattr(new_info, 'connection', 'local')
elif getattr(new_info, 'connection', None) == 'local' and (not remote_addr_local or not inv_hostname_local):
setattr(new_info, 'connection', C.DEFAULT_TRANSPORT)
# we store original in 'connection_user' for use of network/other modules that fallback to it as login user
# connection_user to be deprecated once connection=local is removed for, as local resets remote_user
if new_info.connection == 'local':
if not new_info.connection_user:
new_info.connection_user = new_info.remote_user
# for case in which connection plugin still uses pc.remote_addr and in it's own options
# specifies 'default: inventory_hostname', but never added to vars:
if new_info.remote_addr == 'inventory_hostname':
new_info.remote_addr = variables.get('inventory_hostname')
display.warning('The "%s" connection plugin has an improperly configured remote target value, '
'forcing "inventory_hostname" templated value instead of the string' % new_info.connection)
if task.check_mode is not None:
new_info.check_mode = task.check_mode
if task.diff is not None:
new_info.diff = task.diff
return new_info
def set_become_plugin(self, plugin):
self._become_plugin = plugin
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