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community.general/lib/ansible/constants.py
Feanil Patel 892e230514 Don't convert nulls to strings. 
This change is similar to https://github.com/ansible/ansible/pull/10465

It extends the logic there to also support none types.  Right now if you have
a '!!null' in yaml, and that var gets passed around, it will get converted to
a string.

eg. defaults/main.yml
```
ENABLE_AWESOME_FEATURE: !!null # Yaml Null
OTHER_CONFIG:
  secret1: "so_secret"
  secret2: "even_more_secret"

CONFIG:
  hostname: "some_hostname"
  features:
    awesame_feature: "{{ ENABLE_AWESOME_FEATURE}}"
  secrets: "{{ OTHER_CONFIG }}"
```

If you output `CONFIG` to json or yaml, the feature flag would get represented in the output
as a string instead of as a null, but secrets would get represented as a dictionary.  This is
a mis-match in behaviour where some "types" are retained and others are not.  This change
should fix the issue.

I also updated the template test to test for this and made the changes to v2.

Added a changelog entry specifically for the change from empty string to null as the default.

Made the null representation configurable.

It still defaults to the python NoneType but can be overriden to be an emptystring by updating
the DEFAULT_NULL_REPRESENTATION config.
2015-08-19 18:35:07 -04:00

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# (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)
__metaclass__ = type
import os
import pwd
import sys
from string import ascii_letters, digits
from six import string_types
from six.moves import configparser
from ansible.parsing.splitter import unquote
from ansible.errors import AnsibleOptionsError
# copied from utils, avoid circular reference fun :)
def mk_boolean(value):
if value is None:
return False
val = str(value)
if val.lower() in [ "true", "t", "y", "1", "yes" ]:
return True
else:
return False
def get_config(p, section, key, env_var, default, boolean=False, integer=False, floating=False, islist=False, isnone=False):
''' return a configuration variable with casting '''
value = _get_config(p, section, key, env_var, default)
if boolean:
value = mk_boolean(value)
if value:
if integer:
value = int(value)
elif floating:
value = float(value)
elif islist:
if isinstance(value, string_types):
value = [x.strip() for x in value.split(',')]
elif isnone:
if value == "None":
value = None
elif isinstance(value, string_types):
value = unquote(value)
return value
def _get_config(p, section, key, env_var, default):
''' helper function for get_config '''
if env_var is not None:
value = os.environ.get(env_var, None)
if value is not None:
return value
if p is not None:
try:
return p.get(section, key, raw=True)
except:
return default
return default
def load_config_file():
''' Load Config File order(first found is used): ENV, CWD, HOME, /etc/ansible '''
p = configparser.ConfigParser()
path0 = os.getenv("ANSIBLE_CONFIG", None)
if path0 is not None:
path0 = os.path.expanduser(path0)
if os.path.isdir(path0):
path0 += "/ansible.cfg"
path1 = os.getcwd() + "/ansible.cfg"
path2 = os.path.expanduser("~/.ansible.cfg")
path3 = "/etc/ansible/ansible.cfg"
for path in [path0, path1, path2, path3]:
if path is not None and os.path.exists(path):
try:
p.read(path)
except configparser.Error as e:
raise AnsibleOptionsError("Error reading config file: \n{0}".format(e))
return p, path
return None, ''
def shell_expand_path(path):
''' shell_expand_path is needed as os.path.expanduser does not work
when path is None, which is the default for ANSIBLE_PRIVATE_KEY_FILE '''
if path:
path = os.path.expanduser(os.path.expandvars(path))
return path
p, CONFIG_FILE = load_config_file()
active_user = pwd.getpwuid(os.geteuid())[0]
# check all of these extensions when looking for yaml files for things like
# group variables -- really anything we can load
YAML_FILENAME_EXTENSIONS = [ "", ".yml", ".yaml", ".json" ]
# sections in config file
DEFAULTS='defaults'
DEPRECATED_HOST_LIST = shell_expand_path(get_config(p, DEFAULTS, 'hostfile', 'ANSIBLE_HOSTS', '/etc/ansible/hosts'))
# generally configurable things
DEFAULT_DEBUG = get_config(p, DEFAULTS, 'debug', 'ANSIBLE_DEBUG', False, boolean=True)
DEFAULT_HOST_LIST = shell_expand_path(get_config(p, DEFAULTS,'inventory', 'ANSIBLE_INVENTORY', DEPRECATED_HOST_LIST))
DEFAULT_MODULE_PATH = get_config(p, DEFAULTS, 'library', 'ANSIBLE_LIBRARY', None)
DEFAULT_ROLES_PATH = shell_expand_path(get_config(p, DEFAULTS, 'roles_path', 'ANSIBLE_ROLES_PATH', '/etc/ansible/roles'))
DEFAULT_REMOTE_TMP = get_config(p, DEFAULTS, 'remote_tmp', 'ANSIBLE_REMOTE_TEMP', '$HOME/.ansible/tmp')
DEFAULT_MODULE_NAME = get_config(p, DEFAULTS, 'module_name', None, 'command')
DEFAULT_PATTERN = get_config(p, DEFAULTS, 'pattern', None, '*')
DEFAULT_FORKS = get_config(p, DEFAULTS, 'forks', 'ANSIBLE_FORKS', 5, integer=True)
DEFAULT_MODULE_ARGS = get_config(p, DEFAULTS, 'module_args', 'ANSIBLE_MODULE_ARGS', '')
DEFAULT_MODULE_LANG = get_config(p, DEFAULTS, 'module_lang', 'ANSIBLE_MODULE_LANG', 'en_US.UTF-8')
DEFAULT_TIMEOUT = get_config(p, DEFAULTS, 'timeout', 'ANSIBLE_TIMEOUT', 10, integer=True)
DEFAULT_POLL_INTERVAL = get_config(p, DEFAULTS, 'poll_interval', 'ANSIBLE_POLL_INTERVAL', 15, integer=True)
DEFAULT_REMOTE_USER = get_config(p, DEFAULTS, 'remote_user', 'ANSIBLE_REMOTE_USER', active_user)
DEFAULT_ASK_PASS = get_config(p, DEFAULTS, 'ask_pass', 'ANSIBLE_ASK_PASS', False, boolean=True)
DEFAULT_PRIVATE_KEY_FILE = shell_expand_path(get_config(p, DEFAULTS, 'private_key_file', 'ANSIBLE_PRIVATE_KEY_FILE', None))
DEFAULT_REMOTE_PORT = get_config(p, DEFAULTS, 'remote_port', 'ANSIBLE_REMOTE_PORT', None, integer=True)
DEFAULT_ASK_VAULT_PASS = get_config(p, DEFAULTS, 'ask_vault_pass', 'ANSIBLE_ASK_VAULT_PASS', False, boolean=True)
DEFAULT_VAULT_PASSWORD_FILE = shell_expand_path(get_config(p, DEFAULTS, 'vault_password_file', 'ANSIBLE_VAULT_PASSWORD_FILE', None))
DEFAULT_TRANSPORT = get_config(p, DEFAULTS, 'transport', 'ANSIBLE_TRANSPORT', 'smart')
DEFAULT_SCP_IF_SSH = get_config(p, 'ssh_connection', 'scp_if_ssh', 'ANSIBLE_SCP_IF_SSH', False, boolean=True)
DEFAULT_SFTP_BATCH_MODE = get_config(p, 'ssh_connection', 'sftp_batch_mode', 'ANSIBLE_SFTP_BATCH_MODE', True, boolean=True)
DEFAULT_MANAGED_STR = get_config(p, DEFAULTS, 'ansible_managed', None, 'Ansible managed: {file} modified on %Y-%m-%d %H:%M:%S by {uid} on {host}')
DEFAULT_SYSLOG_FACILITY = get_config(p, DEFAULTS, 'syslog_facility', 'ANSIBLE_SYSLOG_FACILITY', 'LOG_USER')
DEFAULT_KEEP_REMOTE_FILES = get_config(p, DEFAULTS, 'keep_remote_files', 'ANSIBLE_KEEP_REMOTE_FILES', False, boolean=True)
DEFAULT_HASH_BEHAVIOUR = get_config(p, DEFAULTS, 'hash_behaviour', 'ANSIBLE_HASH_BEHAVIOUR', 'replace')
DEFAULT_PRIVATE_ROLE_VARS = get_config(p, DEFAULTS, 'private_role_vars', 'ANSIBLE_PRIVATE_ROLE_VARS', False, boolean=True)
DEFAULT_JINJA2_EXTENSIONS = get_config(p, DEFAULTS, 'jinja2_extensions', 'ANSIBLE_JINJA2_EXTENSIONS', None)
DEFAULT_EXECUTABLE = get_config(p, DEFAULTS, 'executable', 'ANSIBLE_EXECUTABLE', '/bin/sh')
DEFAULT_GATHERING = get_config(p, DEFAULTS, 'gathering', 'ANSIBLE_GATHERING', 'implicit').lower()
DEFAULT_LOG_PATH = shell_expand_path(get_config(p, DEFAULTS, 'log_path', 'ANSIBLE_LOG_PATH', ''))
DEFAULT_FORCE_HANDLERS = get_config(p, DEFAULTS, 'force_handlers', 'ANSIBLE_FORCE_HANDLERS', False, boolean=True)
DEFAULT_INVENTORY_IGNORE = get_config(p, DEFAULTS, 'inventory_ignore_extensions', 'ANSIBLE_INVENTORY_IGNORE', ["~", ".orig", ".bak", ".ini", ".cfg", ".retry", ".pyc", ".pyo"], islist=True)
# selinux
DEFAULT_SELINUX_SPECIAL_FS = get_config(p, 'selinux', 'special_context_filesystems', None, 'fuse, nfs, vboxsf, ramfs', islist=True)
### PRIVILEGE ESCALATION ###
# Backwards Compat
DEFAULT_SU = get_config(p, DEFAULTS, 'su', 'ANSIBLE_SU', False, boolean=True)
DEFAULT_SU_USER = get_config(p, DEFAULTS, 'su_user', 'ANSIBLE_SU_USER', 'root')
DEFAULT_SU_EXE = get_config(p, DEFAULTS, 'su_exe', 'ANSIBLE_SU_EXE', 'su')
DEFAULT_SU_FLAGS = get_config(p, DEFAULTS, 'su_flags', 'ANSIBLE_SU_FLAGS', '')
DEFAULT_ASK_SU_PASS = get_config(p, DEFAULTS, 'ask_su_pass', 'ANSIBLE_ASK_SU_PASS', False, boolean=True)
DEFAULT_SUDO = get_config(p, DEFAULTS, 'sudo', 'ANSIBLE_SUDO', False, boolean=True)
DEFAULT_SUDO_USER = get_config(p, DEFAULTS, 'sudo_user', 'ANSIBLE_SUDO_USER', 'root')
DEFAULT_SUDO_EXE = get_config(p, DEFAULTS, 'sudo_exe', 'ANSIBLE_SUDO_EXE', 'sudo')
DEFAULT_SUDO_FLAGS = get_config(p, DEFAULTS, 'sudo_flags', 'ANSIBLE_SUDO_FLAGS', '-H')
DEFAULT_ASK_SUDO_PASS = get_config(p, DEFAULTS, 'ask_sudo_pass', 'ANSIBLE_ASK_SUDO_PASS', False, boolean=True)
# Become
BECOME_ERROR_STRINGS = {'sudo': 'Sorry, try again.', 'su': 'Authentication failure', 'pbrun': '', 'pfexec': '', 'runas': '', 'doas': 'Permission denied'} #FIXME: deal with i18n
BECOME_METHODS = ['sudo','su','pbrun','pfexec','runas','doas']
DEFAULT_BECOME_METHOD = get_config(p, 'privilege_escalation', 'become_method', 'ANSIBLE_BECOME_METHOD','sudo' if DEFAULT_SUDO else 'su' if DEFAULT_SU else 'sudo' ).lower()
DEFAULT_BECOME = get_config(p, 'privilege_escalation', 'become', 'ANSIBLE_BECOME',False, boolean=True)
DEFAULT_BECOME_USER = get_config(p, 'privilege_escalation', 'become_user', 'ANSIBLE_BECOME_USER', 'root')
DEFAULT_BECOME_EXE = get_config(p, 'privilege_escalation', 'become_exe', 'ANSIBLE_BECOME_EXE', None)
DEFAULT_BECOME_FLAGS = get_config(p, 'privilege_escalation', 'become_flags', 'ANSIBLE_BECOME_FLAGS', None)
DEFAULT_BECOME_ASK_PASS = get_config(p, 'privilege_escalation', 'become_ask_pass', 'ANSIBLE_BECOME_ASK_PASS', False, boolean=True)
# Plugin paths
DEFAULT_ACTION_PLUGIN_PATH = get_config(p, DEFAULTS, 'action_plugins', 'ANSIBLE_ACTION_PLUGINS', '~/.ansible/plugins/action_plugins:/usr/share/ansible_plugins/action_plugins')
DEFAULT_CACHE_PLUGIN_PATH = get_config(p, DEFAULTS, 'cache_plugins', 'ANSIBLE_CACHE_PLUGINS', '~/.ansible/plugins/cache_plugins:/usr/share/ansible_plugins/cache_plugins')
DEFAULT_CALLBACK_PLUGIN_PATH = get_config(p, DEFAULTS, 'callback_plugins', 'ANSIBLE_CALLBACK_PLUGINS', '~/.ansible/plugins/callback_plugins:/usr/share/ansible_plugins/callback_plugins')
DEFAULT_CONNECTION_PLUGIN_PATH = get_config(p, DEFAULTS, 'connection_plugins', 'ANSIBLE_CONNECTION_PLUGINS', '~/.ansible/plugins/connection_plugins:/usr/share/ansible_plugins/connection_plugins')
DEFAULT_LOOKUP_PLUGIN_PATH = get_config(p, DEFAULTS, 'lookup_plugins', 'ANSIBLE_LOOKUP_PLUGINS', '~/.ansible/plugins/lookup_plugins:/usr/share/ansible_plugins/lookup_plugins')
DEFAULT_VARS_PLUGIN_PATH = get_config(p, DEFAULTS, 'vars_plugins', 'ANSIBLE_VARS_PLUGINS', '~/.ansible/plugins/vars_plugins:/usr/share/ansible_plugins/vars_plugins')
DEFAULT_FILTER_PLUGIN_PATH = get_config(p, DEFAULTS, 'filter_plugins', 'ANSIBLE_FILTER_PLUGINS', '~/.ansible/plugins/filter_plugins:/usr/share/ansible_plugins/filter_plugins')
DEFAULT_TEST_PLUGIN_PATH = get_config(p, DEFAULTS, 'test_plugins', 'ANSIBLE_TEST_PLUGINS', '~/.ansible/plugins/test_plugins:/usr/share/ansible_plugins/test_plugins')
DEFAULT_STDOUT_CALLBACK = get_config(p, DEFAULTS, 'stdout_callback', 'ANSIBLE_STDOUT_CALLBACK', 'default')
CACHE_PLUGIN = get_config(p, DEFAULTS, 'fact_caching', 'ANSIBLE_CACHE_PLUGIN', 'memory')
CACHE_PLUGIN_CONNECTION = get_config(p, DEFAULTS, 'fact_caching_connection', 'ANSIBLE_CACHE_PLUGIN_CONNECTION', None)
CACHE_PLUGIN_PREFIX = get_config(p, DEFAULTS, 'fact_caching_prefix', 'ANSIBLE_CACHE_PLUGIN_PREFIX', 'ansible_facts')
CACHE_PLUGIN_TIMEOUT = get_config(p, DEFAULTS, 'fact_caching_timeout', 'ANSIBLE_CACHE_PLUGIN_TIMEOUT', 24 * 60 * 60, integer=True)
# Display
ANSIBLE_FORCE_COLOR = get_config(p, DEFAULTS, 'force_color', 'ANSIBLE_FORCE_COLOR', None, boolean=True)
ANSIBLE_NOCOLOR = get_config(p, DEFAULTS, 'nocolor', 'ANSIBLE_NOCOLOR', None, boolean=True)
ANSIBLE_NOCOWS = get_config(p, DEFAULTS, 'nocows', 'ANSIBLE_NOCOWS', None, boolean=True)
DISPLAY_SKIPPED_HOSTS = get_config(p, DEFAULTS, 'display_skipped_hosts', 'DISPLAY_SKIPPED_HOSTS', True, boolean=True)
DEFAULT_UNDEFINED_VAR_BEHAVIOR = get_config(p, DEFAULTS, 'error_on_undefined_vars', 'ANSIBLE_ERROR_ON_UNDEFINED_VARS', True, boolean=True)
HOST_KEY_CHECKING = get_config(p, DEFAULTS, 'host_key_checking', 'ANSIBLE_HOST_KEY_CHECKING', True, boolean=True)
SYSTEM_WARNINGS = get_config(p, DEFAULTS, 'system_warnings', 'ANSIBLE_SYSTEM_WARNINGS', True, boolean=True)
DEPRECATION_WARNINGS = get_config(p, DEFAULTS, 'deprecation_warnings', 'ANSIBLE_DEPRECATION_WARNINGS', True, boolean=True)
DEFAULT_CALLABLE_WHITELIST = get_config(p, DEFAULTS, 'callable_whitelist', 'ANSIBLE_CALLABLE_WHITELIST', [], islist=True)
COMMAND_WARNINGS = get_config(p, DEFAULTS, 'command_warnings', 'ANSIBLE_COMMAND_WARNINGS', True, boolean=True)
DEFAULT_LOAD_CALLBACK_PLUGINS = get_config(p, DEFAULTS, 'bin_ansible_callbacks', 'ANSIBLE_LOAD_CALLBACK_PLUGINS', False, boolean=True)
DEFAULT_CALLBACK_WHITELIST = get_config(p, DEFAULTS, 'callback_whitelist', 'ANSIBLE_CALLBACK_WHITELIST', [], islist=True)
RETRY_FILES_ENABLED = get_config(p, DEFAULTS, 'retry_files_enabled', 'ANSIBLE_RETRY_FILES_ENABLED', True, boolean=True)
RETRY_FILES_SAVE_PATH = get_config(p, DEFAULTS, 'retry_files_save_path', 'ANSIBLE_RETRY_FILES_SAVE_PATH', '~/')
DEFAULT_NULL_REPRESENTATION = get_config(p, DEFAULTS, 'null_representation', 'ANSIBLE_NULL_REPRESENTATION', None, isnone=True)
# CONNECTION RELATED
ANSIBLE_SSH_ARGS = get_config(p, 'ssh_connection', 'ssh_args', 'ANSIBLE_SSH_ARGS', None)
ANSIBLE_SSH_CONTROL_PATH = get_config(p, 'ssh_connection', 'control_path', 'ANSIBLE_SSH_CONTROL_PATH', "%(directory)s/ansible-ssh-%%h-%%p-%%r")
ANSIBLE_SSH_PIPELINING = get_config(p, 'ssh_connection', 'pipelining', 'ANSIBLE_SSH_PIPELINING', False, boolean=True)
ANSIBLE_SSH_RETRIES = get_config(p, 'ssh_connection', 'retries', 'ANSIBLE_SSH_RETRIES', 0, integer=True)
PARAMIKO_RECORD_HOST_KEYS = get_config(p, 'paramiko_connection', 'record_host_keys', 'ANSIBLE_PARAMIKO_RECORD_HOST_KEYS', True, boolean=True)
# obsolete -- will be formally removed
ZEROMQ_PORT = get_config(p, 'fireball_connection', 'zeromq_port', 'ANSIBLE_ZEROMQ_PORT', 5099, integer=True)
ACCELERATE_PORT = get_config(p, 'accelerate', 'accelerate_port', 'ACCELERATE_PORT', 5099, integer=True)
ACCELERATE_TIMEOUT = get_config(p, 'accelerate', 'accelerate_timeout', 'ACCELERATE_TIMEOUT', 30, integer=True)
ACCELERATE_CONNECT_TIMEOUT = get_config(p, 'accelerate', 'accelerate_connect_timeout', 'ACCELERATE_CONNECT_TIMEOUT', 1.0, floating=True)
ACCELERATE_DAEMON_TIMEOUT = get_config(p, 'accelerate', 'accelerate_daemon_timeout', 'ACCELERATE_DAEMON_TIMEOUT', 30, integer=True)
ACCELERATE_KEYS_DIR = get_config(p, 'accelerate', 'accelerate_keys_dir', 'ACCELERATE_KEYS_DIR', '~/.fireball.keys')
ACCELERATE_KEYS_DIR_PERMS = get_config(p, 'accelerate', 'accelerate_keys_dir_perms', 'ACCELERATE_KEYS_DIR_PERMS', '700')
ACCELERATE_KEYS_FILE_PERMS = get_config(p, 'accelerate', 'accelerate_keys_file_perms', 'ACCELERATE_KEYS_FILE_PERMS', '600')
ACCELERATE_MULTI_KEY = get_config(p, 'accelerate', 'accelerate_multi_key', 'ACCELERATE_MULTI_KEY', False, boolean=True)
PARAMIKO_PTY = get_config(p, 'paramiko_connection', 'pty', 'ANSIBLE_PARAMIKO_PTY', True, boolean=True)
# galaxy related
DEFAULT_GALAXY_URI = get_config(p, 'galaxy', 'server_uri', 'ANSIBLE_GALAXY_SERVER_URI', 'https://galaxy.ansible.com')
# this can be configured to blacklist SCMS but cannot add new ones unless the code is also updated
GALAXY_SCMS = get_config(p, 'galaxy', 'scms', 'ANSIBLE_GALAXY_SCMS', 'git, hg', islist=True)
# characters included in auto-generated passwords
DEFAULT_PASSWORD_CHARS = ascii_letters + digits + ".,:-_"
# non-configurable things
MODULE_REQUIRE_ARGS = ['command', 'shell', 'raw', 'script']
MODULE_NO_JSON = ['command', 'shell', 'raw']
DEFAULT_BECOME_PASS = None
DEFAULT_SUDO_PASS = None
DEFAULT_REMOTE_PASS = None
DEFAULT_SUBSET = None
DEFAULT_SU_PASS = None
VAULT_VERSION_MIN = 1.0
VAULT_VERSION_MAX = 1.0
MAX_FILE_SIZE_FOR_DIFF = 1*1024*1024
TREE_DIR = None
LOCALHOST = frozenset(['127.0.0.1', 'localhost', '::1'])
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