# 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
import atexit
import io
import os
import os.path
import sys
import stat
import tempfile
import traceback
from collections import namedtuple
from yaml import load as yaml_load
try:
# use C version if possible for speedup
from yaml import CSafeLoader as SafeLoader
except ImportError:
from yaml import SafeLoader
from ansible.config.data import ConfigData
from ansible.errors import AnsibleOptionsError, AnsibleError
from ansible.module_utils._text import to_text, to_bytes, to_native
from ansible.module_utils.common._collections_compat import Sequence
from ansible.module_utils.six import PY3, string_types
from ansible.module_utils.six.moves import configparser
from ansible.module_utils.parsing.convert_bool import boolean
from ansible.parsing.quoting import unquote
from ansible.parsing.yaml.objects import AnsibleVaultEncryptedUnicode
from ansible.utils import py3compat
from ansible.utils.path import cleanup_tmp_file, makedirs_safe, unfrackpath
Plugin = namedtuple('Plugin', 'name type')
Setting = namedtuple('Setting', 'name value origin type')
INTERNAL_DEFS = {'lookup': ('_terms',)}
def _get_entry(plugin_type, plugin_name, config):
''' construct entry for requested config '''
entry = ''
if plugin_type:
entry += 'plugin_type: %s ' % plugin_type
if plugin_name:
entry += 'plugin: %s ' % plugin_name
entry += 'setting: %s ' % config
return entry
# FIXME: see if we can unify in module_utils with similar function used by argspec
def ensure_type(value, value_type, origin=None):
''' return a configuration variable with casting
:arg value: The value to ensure correct typing of
:kwarg value_type: The type of the value. This can be any of the following strings:
:boolean: sets the value to a True or False value
:bool: Same as 'boolean'
:integer: Sets the value to an integer or raises a ValueType error
:int: Same as 'integer'
:float: Sets the value to a float or raises a ValueType error
:list: Treats the value as a comma separated list. Split the value
and return it as a python list.
:none: Sets the value to None
:path: Expands any environment variables and tilde's in the value.
:tmppath: Create a unique temporary directory inside of the directory
specified by value and return its path.
:temppath: Same as 'tmppath'
:tmp: Same as 'tmppath'
:pathlist: Treat the value as a typical PATH string. (On POSIX, this
means colon separated strings.) Split the value and then expand
each part for environment variables and tildes.
:pathspec: Treat the value as a PATH string. Expands any environment variables
tildes's in the value.
:str: Sets the value to string types.
:string: Same as 'str'
'''
errmsg = ''
basedir = None
if origin and os.path.isabs(origin) and os.path.exists(to_bytes(origin)):
basedir = origin
if value_type:
value_type = value_type.lower()
if value is not None:
if value_type in ('boolean', 'bool'):
value = boolean(value, strict=False)
elif value_type in ('integer', 'int'):
value = int(value)
elif value_type == 'float':
value = float(value)
elif value_type == 'list':
if isinstance(value, string_types):
value = [x.strip() for x in value.split(',')]
elif not isinstance(value, Sequence):
errmsg = 'list'
elif value_type == 'none':
if value == "None":
value = None
if value is not None:
errmsg = 'None'
elif value_type == 'path':
if isinstance(value, string_types):
value = resolve_path(value, basedir=basedir)
else:
errmsg = 'path'
elif value_type in ('tmp', 'temppath', 'tmppath'):
if isinstance(value, string_types):
value = resolve_path(value, basedir=basedir)
if not os.path.exists(value):
makedirs_safe(value, 0o700)
prefix = 'ansible-local-%s' % os.getpid()
value = tempfile.mkdtemp(prefix=prefix, dir=value)
atexit.register(cleanup_tmp_file, value, warn=True)
else:
errmsg = 'temppath'
elif value_type == 'pathspec':
if isinstance(value, string_types):
value = value.split(os.pathsep)
if isinstance(value, Sequence):
value = [resolve_path(x, basedir=basedir) for x in value]
else:
errmsg = 'pathspec'
elif value_type == 'pathlist':
if isinstance(value, string_types):
value = [x.strip() for x in value.split(',')]
if isinstance(value, Sequence):
value = [resolve_path(x, basedir=basedir) for x in value]
else:
errmsg = 'pathlist'
elif value_type in ('str', 'string'):
if isinstance(value, (string_types, AnsibleVaultEncryptedUnicode)):
value = unquote(to_text(value, errors='surrogate_or_strict'))
else:
errmsg = 'string'
# defaults to string type
elif isinstance(value, (string_types, AnsibleVaultEncryptedUnicode)):
value = unquote(to_text(value, errors='surrogate_or_strict'))
if errmsg:
raise ValueError('Invalid type provided for "%s": %s' % (errmsg, to_native(value)))
return to_text(value, errors='surrogate_or_strict', nonstring='passthru')
# FIXME: see if this can live in utils/path
def resolve_path(path, basedir=None):
''' resolve relative or 'variable' paths '''
if '{{CWD}}' in path: # allow users to force CWD using 'magic' {{CWD}}
path = path.replace('{{CWD}}', os.getcwd())
return unfrackpath(path, follow=False, basedir=basedir)
# FIXME: generic file type?
def get_config_type(cfile):
ftype = None
if cfile is not None:
ext = os.path.splitext(cfile)[-1]
if ext in ('.ini', '.cfg'):
ftype = 'ini'
elif ext in ('.yaml', '.yml'):
ftype = 'yaml'
else:
raise AnsibleOptionsError("Unsupported configuration file extension for %s: %s" % (cfile, to_native(ext)))
return ftype
# FIXME: can move to module_utils for use for ini plugins also?
def get_ini_config_value(p, entry):
''' returns the value of last ini entry found '''
value = None
if p is not None:
try:
value = p.get(entry.get('section', 'defaults'), entry.get('key', ''), raw=True)
except Exception: # FIXME: actually report issues here
pass
return value
def find_ini_config_file(warnings=None):
''' Load INI Config File order(first found is used): ENV, CWD, HOME, /etc/ansible '''
# FIXME: eventually deprecate ini configs
if warnings is None:
# Note: In this case, warnings does nothing
warnings = set()
# A value that can never be a valid path so that we can tell if ANSIBLE_CONFIG was set later
# We can't use None because we could set path to None.
SENTINEL = object
potential_paths = []
# Environment setting
path_from_env = os.getenv("ANSIBLE_CONFIG", SENTINEL)
if path_from_env is not SENTINEL:
path_from_env = unfrackpath(path_from_env, follow=False)
if os.path.isdir(to_bytes(path_from_env)):
path_from_env = os.path.join(path_from_env, "ansible.cfg")
potential_paths.append(path_from_env)
# Current working directory
warn_cmd_public = False
try:
cwd = os.getcwd()
perms = os.stat(cwd)
cwd_cfg = os.path.join(cwd, "ansible.cfg")
if perms.st_mode & stat.S_IWOTH:
# Working directory is world writable so we'll skip it.
# Still have to look for a file here, though, so that we know if we have to warn
if os.path.exists(cwd_cfg):
warn_cmd_public = True
else:
potential_paths.append(to_text(cwd_cfg, errors='surrogate_or_strict'))
except OSError:
# If we can't access cwd, we'll simply skip it as a possible config source
pass
# Per user location
potential_paths.append(unfrackpath("~/.ansible.cfg", follow=False))
# System location
potential_paths.append("/etc/ansible/ansible.cfg")
for path in potential_paths:
b_path = to_bytes(path)
if os.path.exists(b_path) and os.access(b_path, os.R_OK):
break
else:
path = None
# Emit a warning if all the following are true:
# * We did not use a config from ANSIBLE_CONFIG
# * There's an ansible.cfg in the current working directory that we skipped
if path_from_env != path and warn_cmd_public:
warnings.add(u"Ansible is being run in a world writable directory (%s),"
u" ignoring it as an ansible.cfg source."
u" For more information see"
u" https://docs.ansible.com/ansible/devel/reference_appendices/config.html#cfg-in-world-writable-dir"
% to_text(cwd))
return path
class ConfigManager(object):
DEPRECATED = []
WARNINGS = set()
def __init__(self, conf_file=None, defs_file=None):
self._base_defs = {}
self._plugins = {}
self._parsers = {}
self._config_file = conf_file
self.data = ConfigData()
self._base_defs = self._read_config_yaml_file(defs_file or ('%s/base.yml' % os.path.dirname(__file__)))
if self._config_file is None:
# set config using ini
self._config_file = find_ini_config_file(self.WARNINGS)
# consume configuration
if self._config_file:
# initialize parser and read config
self._parse_config_file()
# update constants
self.update_config_data()
try:
self.update_module_defaults_groups()
except Exception as e:
# Since this is a 2.7 preview feature, we want to have it fail as gracefully as possible when there are issues.
sys.stderr.write('Could not load module_defaults_groups: %s: %s\n\n' % (type(e).__name__, e))
self.module_defaults_groups = {}
def _read_config_yaml_file(self, yml_file):
# TODO: handle relative paths as relative to the directory containing the current playbook instead of CWD
# Currently this is only used with absolute paths to the `ansible/config` directory
yml_file = to_bytes(yml_file)
if os.path.exists(yml_file):
with open(yml_file, 'rb') as config_def:
return yaml_load(config_def, Loader=SafeLoader) or {}
raise AnsibleError(
"Missing base YAML definition file (bad install?): %s" % to_native(yml_file))
def _parse_config_file(self, cfile=None):
''' return flat configuration settings from file(s) '''
# TODO: take list of files with merge/nomerge
if cfile is None:
cfile = self._config_file
ftype = get_config_type(cfile)
if cfile is not None:
if ftype == 'ini':
kwargs = {}
if PY3:
kwargs['inline_comment_prefixes'] = (';',)
self._parsers[cfile] = configparser.ConfigParser(**kwargs)
with open(to_bytes(cfile), 'rb') as f:
try:
cfg_text = to_text(f.read(), errors='surrogate_or_strict')
except UnicodeError as e:
raise AnsibleOptionsError("Error reading config file(%s) because the config file was not utf8 encoded: %s" % (cfile, to_native(e)))
try:
if PY3:
self._parsers[cfile].read_string(cfg_text)
else:
cfg_file = io.StringIO(cfg_text)
self._parsers[cfile].readfp(cfg_file)
except configparser.Error as e:
raise AnsibleOptionsError("Error reading config file (%s): %s" % (cfile, to_native(e)))
# FIXME: this should eventually handle yaml config files
# elif ftype == 'yaml':
# with open(cfile, 'rb') as config_stream:
# self._parsers[cfile] = yaml.safe_load(config_stream)
else:
raise AnsibleOptionsError("Unsupported configuration file type: %s" % to_native(ftype))
def _find_yaml_config_files(self):
''' Load YAML Config Files in order, check merge flags, keep origin of settings'''
pass
def get_plugin_options(self, plugin_type, name, keys=None, variables=None, direct=None):
options = {}
defs = self.get_configuration_definitions(plugin_type, name)
for option in defs:
options[option] = self.get_config_value(option, plugin_type=plugin_type, plugin_name=name, keys=keys, variables=variables, direct=direct)
return options
def get_plugin_vars(self, plugin_type, name):
pvars = []
for pdef in self.get_configuration_definitions(plugin_type, name).values():
if 'vars' in pdef and pdef['vars']:
for var_entry in pdef['vars']:
pvars.append(var_entry['name'])
return pvars
def get_configuration_definition(self, name, plugin_type=None, plugin_name=None):
ret = {}
if plugin_type is None:
ret = self._base_defs.get(name, None)
elif plugin_name is None:
ret = self._plugins.get(plugin_type, {}).get(name, None)
else:
ret = self._plugins.get(plugin_type, {}).get(plugin_name, {}).get(name, None)
return ret
def get_configuration_definitions(self, plugin_type=None, name=None):
''' just list the possible settings, either base or for specific plugins or plugin '''
ret = {}
if plugin_type is None:
ret = self._base_defs
elif name is None:
ret = self._plugins.get(plugin_type, {})
else:
ret = self._plugins.get(plugin_type, {}).get(name, {})
return ret
def _loop_entries(self, container, entry_list):
''' repeat code for value entry assignment '''
value = None
origin = None
for entry in entry_list:
name = entry.get('name')
try:
temp_value = container.get(name, None)
except UnicodeEncodeError:
self.WARNINGS.add(u'value for config entry {0} contains invalid characters, ignoring...'.format(to_text(name)))
continue
if temp_value is not None: # only set if entry is defined in container
# inline vault variables should be converted to a text string
if isinstance(temp_value, AnsibleVaultEncryptedUnicode):
temp_value = to_text(temp_value, errors='surrogate_or_strict')
value = temp_value
origin = name
# deal with deprecation of setting source, if used
if 'deprecated' in entry:
self.DEPRECATED.append((entry['name'], entry['deprecated']))
return value, origin
def get_config_value(self, config, cfile=None, plugin_type=None, plugin_name=None, keys=None, variables=None, direct=None):
''' wrapper '''
try:
value, _drop = self.get_config_value_and_origin(config, cfile=cfile, plugin_type=plugin_type, plugin_name=plugin_name,
keys=keys, variables=variables, direct=direct)
except AnsibleError:
raise
except Exception as e:
raise AnsibleError("Unhandled exception when retrieving %s:\n%s" % (config, to_native(e)), orig_exc=e)
return value
def get_config_value_and_origin(self, config, cfile=None, plugin_type=None, plugin_name=None, keys=None, variables=None, direct=None):
''' Given a config key figure out the actual value and report on the origin of the settings '''
if cfile is None:
# use default config
cfile = self._config_file
# Note: sources that are lists listed in low to high precedence (last one wins)
value = None
origin = None
defs = self.get_configuration_definitions(plugin_type, plugin_name)
if config in defs:
aliases = defs[config].get('aliases', [])
# direct setting via plugin arguments, can set to None so we bypass rest of processing/defaults
direct_aliases = []
if direct:
direct_aliases = [direct[alias] for alias in aliases if alias in direct]
if direct and config in direct:
value = direct[config]
origin = 'Direct'
elif direct and direct_aliases:
value = direct_aliases[0]
origin = 'Direct'
else:
# Use 'variable overrides' if present, highest precedence, but only present when querying running play
if variables and defs[config].get('vars'):
value, origin = self._loop_entries(variables, defs[config]['vars'])
origin = 'var: %s' % origin
# use playbook keywords if you have em
if value is None and keys:
if config in keys:
value = keys[config]
keyword = config
elif aliases:
for alias in aliases:
if alias in keys:
value = keys[alias]
keyword = alias
break
if value is not None:
origin = 'keyword: %s' % keyword
# env vars are next precedence
if value is None and defs[config].get('env'):
value, origin = self._loop_entries(py3compat.environ, defs[config]['env'])
origin = 'env: %s' % origin
# try config file entries next, if we have one
if self._parsers.get(cfile, None) is None:
self._parse_config_file(cfile)
if value is None and cfile is not None:
ftype = get_config_type(cfile)
if ftype and defs[config].get(ftype):
if ftype == 'ini':
# load from ini config
try: # FIXME: generalize _loop_entries to allow for files also, most of this code is dupe
for ini_entry in defs[config]['ini']:
temp_value = get_ini_config_value(self._parsers[cfile], ini_entry)
if temp_value is not None:
value = temp_value
origin = cfile
if 'deprecated' in ini_entry:
self.DEPRECATED.append(('[%s]%s' % (ini_entry['section'], ini_entry['key']), ini_entry['deprecated']))
except Exception as e:
sys.stderr.write("Error while loading ini config %s: %s" % (cfile, to_native(e)))
elif ftype == 'yaml':
# FIXME: implement, also , break down key from defs (. notation???)
origin = cfile
# set default if we got here w/o a value
if value is None:
if defs[config].get('required', False):
if not plugin_type or config not in INTERNAL_DEFS.get(plugin_type, {}):
raise AnsibleError("No setting was provided for required configuration %s" %
to_native(_get_entry(plugin_type, plugin_name, config)))
else:
value = defs[config].get('default')
origin = 'default'
# skip typing as this is a templated default that will be resolved later in constants, which has needed vars
if plugin_type is None and isinstance(value, string_types) and (value.startswith('{{') and value.endswith('}}')):
return value, origin
# ensure correct type, can raise exceptions on mismatched types
try:
value = ensure_type(value, defs[config].get('type'), origin=origin)
except ValueError as e:
if origin.startswith('env:') and value == '':
# this is empty env var for non string so we can set to default
origin = 'default'
value = ensure_type(defs[config].get('default'), defs[config].get('type'), origin=origin)
else:
raise AnsibleOptionsError('Invalid type for configuration option %s: %s' %
(to_native(_get_entry(plugin_type, plugin_name, config)), to_native(e)))
# deal with deprecation of the setting
if 'deprecated' in defs[config] and origin != 'default':
self.DEPRECATED.append((config, defs[config].get('deprecated')))
else:
raise AnsibleError('Requested entry (%s) was not defined in configuration.' % to_native(_get_entry(plugin_type, plugin_name, config)))
return value, origin
def initialize_plugin_configuration_definitions(self, plugin_type, name, defs):
if plugin_type not in self._plugins:
self._plugins[plugin_type] = {}
self._plugins[plugin_type][name] = defs
def update_module_defaults_groups(self):
defaults_config = self._read_config_yaml_file(
'%s/module_defaults.yml' % os.path.join(os.path.dirname(__file__))
)
if defaults_config.get('version') not in ('1', '1.0', 1, 1.0):
raise AnsibleError('module_defaults.yml has an invalid version "%s" for configuration. Could be a bad install.' % defaults_config.get('version'))
self.module_defaults_groups = defaults_config.get('groupings', {})
def update_config_data(self, defs=None, configfile=None):
''' really: update constants '''
if defs is None:
defs = self._base_defs
if configfile is None:
configfile = self._config_file
if not isinstance(defs, dict):
raise AnsibleOptionsError("Invalid configuration definition type: %s for %s" % (type(defs), defs))
# update the constant for config file
self.data.update_setting(Setting('CONFIG_FILE', configfile, '', 'string'))
origin = None
# env and config defs can have several entries, ordered in list from lowest to highest precedence
for config in defs:
if not isinstance(defs[config], dict):
raise AnsibleOptionsError("Invalid configuration definition '%s': type is %s" % (to_native(config), type(defs[config])))
# get value and origin
try:
value, origin = self.get_config_value_and_origin(config, configfile)
except Exception as e:
# Printing the problem here because, in the current code:
# (1) we can't reach the error handler for AnsibleError before we
# hit a different error due to lack of working config.
# (2) We don't have access to display yet because display depends on config
# being properly loaded.
#
# If we start getting double errors printed from this section of code, then the
# above problem #1 has been fixed. Revamp this to be more like the try: except
# in get_config_value() at that time.
sys.stderr.write("Unhandled error:\n %s\n\n" % traceback.format_exc())
raise AnsibleError("Invalid settings supplied for %s: %s\n" % (config, to_native(e)), orig_exc=e)
# set the constant
self.data.update_setting(Setting(config, value, origin, defs[config].get('type', 'string')))
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