You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
ansible/lib/ansible/cli/__init__.py

679 lines
27 KiB
Python

# Copyright: (c) 2012-2014, Michael DeHaan <michael.dehaan@gmail.com>
# Copyright: (c) 2016, Toshio Kuratomi <tkuratomi@ansible.com>
# Copyright: (c) 2018, Ansible Project
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
from __future__ import annotations
import locale
import os
import sys
# We overload the ``ansible`` adhoc command to provide the functionality for
# ``SSH_ASKPASS``. This code is here, and not in ``adhoc.py`` to bypass
# unnecessary code. The program provided to ``SSH_ASKPASS`` can only be invoked
# as a singular command, ``python -m`` doesn't work for that use case, and we
# aren't adding a new entrypoint at this time. Assume that if we are executing
# and there is only a single item in argv plus the executable, and the env var
# is set we are in ``SSH_ASKPASS`` mode
if 1 <= len(sys.argv) <= 2 and os.path.basename(sys.argv[0]) == "ansible" and os.getenv('_ANSIBLE_SSH_ASKPASS_SHM'):
from ansible.cli import _ssh_askpass
_ssh_askpass.main()
# Used for determining if the system is running a new enough python version
# and should only restrict on our documented minimum versions
_PY_MIN = (3, 12)
if sys.version_info < _PY_MIN:
raise SystemExit(
f"ERROR: Ansible requires Python {'.'.join(map(str, _PY_MIN))} or newer on the controller. "
f"Current version: {''.join(sys.version.splitlines())}"
)
def check_blocking_io():
"""Check stdin/stdout/stderr to make sure they are using blocking IO."""
handles = []
for handle in (sys.stdin, sys.stdout, sys.stderr):
# noinspection PyBroadException
try:
fd = handle.fileno()
except Exception:
continue # not a real file handle, such as during the import sanity test
if not os.get_blocking(fd):
handles.append(getattr(handle, 'name', None) or '#%s' % fd)
if handles:
raise SystemExit('ERROR: Ansible requires blocking IO on stdin/stdout/stderr. '
'Non-blocking file handles detected: %s' % ', '.join(_io for _io in handles))
check_blocking_io()
def initialize_locale():
"""Set the locale to the users default setting and ensure
the locale and filesystem encoding are UTF-8.
"""
try:
locale.setlocale(locale.LC_ALL, '')
dummy, encoding = locale.getlocale()
except (locale.Error, ValueError) as e:
raise SystemExit(
'ERROR: Ansible could not initialize the preferred locale: %s' % e
)
if not encoding or encoding.lower() not in ('utf-8', 'utf8'):
raise SystemExit('ERROR: Ansible requires the locale encoding to be UTF-8; Detected %s.' % encoding)
fs_enc = sys.getfilesystemencoding()
if fs_enc.lower() != 'utf-8':
raise SystemExit('ERROR: Ansible requires the filesystem encoding to be UTF-8; Detected %s.' % fs_enc)
initialize_locale()
import getpass
import subprocess
import traceback
from abc import ABC, abstractmethod
from pathlib import Path
from ansible import _internal # do not remove or defer; ensures controller-specific state is set early
_internal.setup()
from ansible.errors import AnsibleError, ExitCode
try:
from ansible import constants as C
from ansible.utils.display import Display
display = Display()
except Exception as ex:
if isinstance(ex, AnsibleError):
ex_msg = ' '.join((ex.message, ex._help_text or '')).strip()
else:
ex_msg = str(ex)
print(f'ERROR: {ex_msg}\n\n{"".join(traceback.format_exception(ex))}', file=sys.stderr)
sys.exit(5)
from ansible import context
from ansible.utils import display as _display
from ansible.cli.arguments import option_helpers as opt_help
from ansible.inventory.manager import InventoryManager
from ansible.module_utils.common.text.converters import to_bytes, to_text
from ansible.module_utils.common.collections import is_sequence
from ansible.module_utils.common.file import is_executable
from ansible.parsing.dataloader import DataLoader
from ansible.parsing.vault import PromptVaultSecret, get_file_vault_secret, VaultSecretsContext
from ansible.plugins.loader import add_all_plugin_dirs, init_plugin_loader
from ansible.release import __version__
from ansible.utils.collection_loader import AnsibleCollectionConfig
from ansible.utils.collection_loader._collection_finder import _get_collection_name_from_path
from ansible.utils.path import unfrackpath
from ansible.vars.manager import VariableManager
from ansible.module_utils._internal import _deprecator
from ansible._internal._ssh import _agent_launch
try:
import argcomplete
HAS_ARGCOMPLETE = True
except ImportError:
HAS_ARGCOMPLETE = False
class CLI(ABC):
""" code behind bin/ansible* programs """
PAGER = C.config.get_config_value('PAGER')
# -F (quit-if-one-screen) -R (allow raw ansi control chars)
# -S (chop long lines) -X (disable termcap init and de-init)
LESS_OPTS = 'FRSX'
SKIP_INVENTORY_DEFAULTS = False
USES_CONNECTION = False
def __init__(self, args, callback=None):
"""
Base init method for all command line programs
"""
if not args:
raise ValueError('A non-empty list for args is required')
self.args = args
self.parser = None
self.callback = callback
self.show_devel_warning()
def show_devel_warning(self) -> None:
if C.DEVEL_WARNING and __version__.endswith('dev0'):
display.warning(
'You are running the development version of Ansible. You should only run Ansible from "devel" if '
'you are modifying the Ansible engine, or trying out features under development. This is a rapidly '
'changing source of code and can become unstable at any point.'
)
@abstractmethod
def run(self):
"""Run the ansible command
Subclasses must implement this method. It does the actual work of
running an Ansible command.
"""
self.parse()
# Initialize plugin loader after parse, so that the init code can utilize parsed arguments
cli_collections_path = context.CLIARGS.get('collections_path') or []
if not is_sequence(cli_collections_path):
# In some contexts ``collections_path`` is singular
cli_collections_path = [cli_collections_path]
init_plugin_loader(cli_collections_path)
display.vv(to_text(opt_help.version(self.parser.prog)))
if C.CONFIG_FILE:
display.v(u"Using %s as config file" % to_text(C.CONFIG_FILE))
else:
display.v(u"No config file found; using defaults")
_display._report_config_warnings(_deprecator.ANSIBLE_CORE_DEPRECATOR)
@staticmethod
def split_vault_id(vault_id):
# return (before_@, after_@)
# if no @, return whole string as after_
if '@' not in vault_id:
return (None, vault_id)
parts = vault_id.split('@', 1)
ret = tuple(parts)
return ret
@staticmethod
def build_vault_ids(vault_ids, vault_password_files=None,
ask_vault_pass=None, auto_prompt=True):
vault_password_files = vault_password_files or []
vault_ids = vault_ids or []
# convert vault_password_files into vault_ids slugs
for password_file in vault_password_files:
id_slug = u'%s@%s' % (C.DEFAULT_VAULT_IDENTITY, password_file)
# note this makes --vault-id higher precedence than --vault-password-file
# if we want to intertwingle them in order probably need a cli callback to populate vault_ids
# used by --vault-id and --vault-password-file
vault_ids.append(id_slug)
# if an action needs an encrypt password (create_new_password=True) and we don't
# have other secrets setup, then automatically add a password prompt as well.
# prompts can't/shouldn't work without a tty, so don't add prompt secrets
if ask_vault_pass or (not vault_ids and auto_prompt):
id_slug = u'%s@%s' % (C.DEFAULT_VAULT_IDENTITY, u'prompt_ask_vault_pass')
vault_ids.append(id_slug)
return vault_ids
@staticmethod
def setup_vault_secrets(loader, vault_ids, vault_password_files=None,
ask_vault_pass=None, create_new_password=False,
auto_prompt=True, initialize_context=True):
# list of tuples
vault_secrets = []
# Depending on the vault_id value (including how --ask-vault-pass / --vault-password-file create a vault_id)
# we need to show different prompts. This is for compat with older Towers that expect a
# certain vault password prompt format, so 'promp_ask_vault_pass' vault_id gets the old format.
prompt_formats = {}
# If there are configured default vault identities, they are considered 'first'
# so we prepend them to vault_ids (from cli) here
vault_password_files = vault_password_files or []
if C.DEFAULT_VAULT_PASSWORD_FILE:
vault_password_files.append(C.DEFAULT_VAULT_PASSWORD_FILE)
if create_new_password:
prompt_formats['prompt'] = ['New vault password (%(vault_id)s): ',
'Confirm new vault password (%(vault_id)s): ']
# 2.3 format prompts for --ask-vault-pass
prompt_formats['prompt_ask_vault_pass'] = ['New Vault password: ',
'Confirm New Vault password: ']
else:
prompt_formats['prompt'] = ['Vault password (%(vault_id)s): ']
# The format when we use just --ask-vault-pass needs to match 'Vault password:\s*?$'
prompt_formats['prompt_ask_vault_pass'] = ['Vault password: ']
vault_ids = CLI.build_vault_ids(vault_ids,
vault_password_files,
ask_vault_pass,
auto_prompt=auto_prompt)
last_exception = found_vault_secret = None
for vault_id_slug in vault_ids:
vault_id_name, vault_id_value = CLI.split_vault_id(vault_id_slug)
if vault_id_value in ['prompt', 'prompt_ask_vault_pass']:
# --vault-id some_name@prompt_ask_vault_pass --vault-id other_name@prompt_ask_vault_pass will be a little
# confusing since it will use the old format without the vault id in the prompt
built_vault_id = vault_id_name or C.DEFAULT_VAULT_IDENTITY
# choose the prompt based on --vault-id=prompt or --ask-vault-pass. --ask-vault-pass
# always gets the old format for Tower compatibility.
# ie, we used --ask-vault-pass, so we need to use the old vault password prompt
# format since Tower needs to match on that format.
prompted_vault_secret = PromptVaultSecret(prompt_formats=prompt_formats[vault_id_value],
vault_id=built_vault_id)
# a empty or invalid password from the prompt will warn and continue to the next
# without erroring globally
try:
prompted_vault_secret.load()
except AnsibleError as exc:
display.warning('Error in vault password prompt (%s): %s' % (vault_id_name, exc))
raise
found_vault_secret = True
vault_secrets.append((built_vault_id, prompted_vault_secret))
# update loader with new secrets incrementally, so we can load a vault password
# that is encrypted with a vault secret provided earlier
loader.set_vault_secrets(vault_secrets)
continue
# assuming anything else is a password file
display.vvvvv('Reading vault password file: %s' % vault_id_value)
# read vault_pass from a file
try:
file_vault_secret = get_file_vault_secret(filename=vault_id_value,
vault_id=vault_id_name,
loader=loader)
except AnsibleError as exc:
display.warning('Error getting vault password file (%s): %s' % (vault_id_name, to_text(exc)))
last_exception = exc
continue
try:
file_vault_secret.load()
except AnsibleError as exc:
display.warning('Error in vault password file loading (%s): %s' % (vault_id_name, to_text(exc)))
last_exception = exc
continue
found_vault_secret = True
if vault_id_name:
vault_secrets.append((vault_id_name, file_vault_secret))
else:
vault_secrets.append((C.DEFAULT_VAULT_IDENTITY, file_vault_secret))
# update loader with as-yet-known vault secrets
loader.set_vault_secrets(vault_secrets)
# An invalid or missing password file will error globally
# if no valid vault secret was found.
if last_exception and not found_vault_secret:
raise last_exception
if initialize_context:
VaultSecretsContext.initialize(VaultSecretsContext(vault_secrets))
return vault_secrets
@staticmethod
def _get_secret(prompt: str) -> str:
return getpass.getpass(prompt=prompt)
@staticmethod
def ask_passwords():
""" prompt for connection and become passwords if needed """
op = context.CLIARGS
sshpass = None
becomepass = None
become_prompt_method = "BECOME" if C.AGNOSTIC_BECOME_PROMPT else op['become_method'].upper()
try:
become_prompt = "%s password: " % become_prompt_method
if op['ask_pass']:
sshpass = CLI._get_secret("SSH password: ")
become_prompt = "%s password[defaults to SSH password]: " % become_prompt_method
elif op['connection_password_file']:
sshpass = CLI.get_password_from_file(op['connection_password_file'])
if op['become_ask_pass']:
becomepass = CLI._get_secret(become_prompt)
if op['ask_pass'] and becomepass == '':
becomepass = sshpass
elif op['become_password_file']:
becomepass = CLI.get_password_from_file(op['become_password_file'])
except EOFError:
pass
return sshpass, becomepass
def validate_conflicts(self, op, runas_opts=False, fork_opts=False):
""" check for conflicting options """
if fork_opts:
if op.forks < 1:
self.parser.error("The number of processes (--forks) must be >= 1")
return op
@abstractmethod
def init_parser(self, desc=None, epilog=None):
"""
Create an options parser for most ansible scripts
Subclasses need to implement this method. They will usually call the base class's
init_parser to create a basic version and then add their own options on top of that.
An implementation will look something like this::
def init_parser(self):
super(MyCLI, self).init_parser(desc='The purpose of the program is...')
ansible.arguments.option_helpers.add_runas_options(self.parser)
self.parser.add_option('--my-option', dest='my_option', action='store')
"""
self.parser = opt_help.create_base_parser(self.name, desc=desc, epilog=epilog)
@abstractmethod
def post_process_args(self, options):
"""Process the command line args
Subclasses need to implement this method. This method validates and transforms the command
line arguments. It can be used to check whether conflicting values were given, whether filenames
exist, etc.
An implementation will look something like this::
def post_process_args(self, options):
options = super(MyCLI, self).post_process_args(options)
if options.addition and options.subtraction:
raise AnsibleOptionsError('Only one of --addition and --subtraction can be specified')
if isinstance(options.listofhosts, str):
options.listofhosts = options.listofhosts.split(',')
return options
"""
# process tags
if hasattr(options, 'tags') and not options.tags:
# optparse defaults does not do what's expected
# More specifically, we want `--tags` to be additive. So we cannot
# simply change C.TAGS_RUN's default to ["all"] because then passing
# --tags foo would cause us to have ['all', 'foo']
options.tags = ['all']
if hasattr(options, 'tags') and options.tags:
tags = set()
for tag_set in options.tags:
for tag in tag_set.split(u','):
tags.add(tag.strip())
options.tags = list(tags)
# process skip_tags
if hasattr(options, 'skip_tags') and options.skip_tags:
skip_tags = set()
for tag_set in options.skip_tags:
for tag in tag_set.split(u','):
skip_tags.add(tag.strip())
options.skip_tags = list(skip_tags)
# Make sure path argument doesn't have a backslash
if hasattr(options, 'action') and options.action in ['install', 'download'] and hasattr(options, 'args'):
options.args = [path.rstrip("/") for path in options.args]
# process inventory options except for CLIs that require their own processing
if hasattr(options, 'inventory') and not self.SKIP_INVENTORY_DEFAULTS:
if options.inventory:
# should always be list
if isinstance(options.inventory, str):
options.inventory = [options.inventory]
# Ensure full paths when needed
options.inventory = [unfrackpath(opt, follow=False) if ',' not in opt else opt for opt in options.inventory]
else:
options.inventory = C.DEFAULT_HOST_LIST
return options
def parse(self):
"""Parse the command line args
This method parses the command line arguments. It uses the parser
stored in the self.parser attribute and saves the args and options in
context.CLIARGS.
Subclasses need to implement two helper methods, init_parser() and post_process_args() which
are called from this function before and after parsing the arguments.
"""
self.init_parser()
if HAS_ARGCOMPLETE:
argcomplete.autocomplete(self.parser)
try:
options = self.parser.parse_args(self.args[1:])
except SystemExit as ex:
if ex.code != 0:
self.parser.exit(status=2, message=" \n%s" % self.parser.format_help())
raise
options = self.post_process_args(options)
context._init_global_context(options)
@staticmethod
def version_info(gitinfo=False):
""" return full ansible version info """
if gitinfo:
# expensive call, user with care
ansible_version_string = opt_help.version()
else:
ansible_version_string = __version__
ansible_version = ansible_version_string.split()[0]
ansible_versions = ansible_version.split('.')
for counter in range(len(ansible_versions)):
if ansible_versions[counter] == "":
ansible_versions[counter] = 0
try:
ansible_versions[counter] = int(ansible_versions[counter])
except Exception:
pass
if len(ansible_versions) < 3:
for counter in range(len(ansible_versions), 3):
ansible_versions.append(0)
return {'string': ansible_version_string.strip(),
'full': ansible_version,
'major': ansible_versions[0],
'minor': ansible_versions[1],
'revision': ansible_versions[2]}
@staticmethod
def pager(text):
""" find reasonable way to display text """
# this is a much simpler form of what is in pydoc.py
if not sys.stdout.isatty():
display.display(text, screen_only=True)
elif CLI.PAGER:
if sys.platform == 'win32':
display.display(text, screen_only=True)
else:
CLI.pager_pipe(text)
else:
p = subprocess.Popen('less --version', shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
p.communicate()
if p.returncode == 0:
CLI.pager_pipe(text, 'less')
else:
display.display(text, screen_only=True)
@staticmethod
def pager_pipe(text):
""" pipe text through a pager """
if 'less' in CLI.PAGER:
os.environ['LESS'] = CLI.LESS_OPTS
try:
cmd = subprocess.Popen(CLI.PAGER, shell=True, stdin=subprocess.PIPE, stdout=sys.stdout)
cmd.communicate(input=to_bytes(text))
except (OSError, KeyboardInterrupt):
pass
def _play_prereqs(self):
# TODO: evaluate moving all of the code that touches ``AnsibleCollectionConfig``
# into ``init_plugin_loader`` so that we can specifically remove
# ``AnsibleCollectionConfig.playbook_paths`` to make it immutable after instantiation
options = context.CLIARGS
# all needs loader
loader = DataLoader()
basedir = options.get('basedir', False)
if basedir:
loader.set_basedir(basedir)
add_all_plugin_dirs(basedir)
AnsibleCollectionConfig.playbook_paths = basedir
default_collection = _get_collection_name_from_path(basedir)
if default_collection:
display.warning(u'running with default collection {0}'.format(default_collection))
AnsibleCollectionConfig.default_collection = default_collection
vault_ids = list(options['vault_ids'])
default_vault_ids = C.DEFAULT_VAULT_IDENTITY_LIST
vault_ids = default_vault_ids + vault_ids
vault_secrets = CLI.setup_vault_secrets(loader,
vault_ids=vault_ids,
vault_password_files=list(options['vault_password_files']),
ask_vault_pass=options['ask_vault_pass'],
auto_prompt=False)
loader.set_vault_secrets(vault_secrets)
if self.USES_CONNECTION:
_agent_launch.launch_ssh_agent()
# create the inventory, and filter it based on the subset specified (if any)
inventory = InventoryManager(loader=loader, sources=options['inventory'], cache=(not options.get('flush_cache')))
# create the variable manager, which will be shared throughout
# the code, ensuring a consistent view of global variables
variable_manager = VariableManager(loader=loader, inventory=inventory, version_info=CLI.version_info(gitinfo=False))
# flush fact cache if requested
if options['flush_cache']:
CLI._flush_cache(inventory, variable_manager)
return loader, inventory, variable_manager
@staticmethod
def _flush_cache(inventory, variable_manager):
variable_manager.clear_facts('localhost')
for host in inventory.list_hosts():
hostname = host.get_name()
variable_manager.clear_facts(hostname)
@staticmethod
def get_host_list(inventory, subset, pattern='all'):
no_hosts = False
if len(inventory.list_hosts()) == 0:
# Empty inventory
if C.LOCALHOST_WARNING and pattern not in C.LOCALHOST:
display.warning("provided hosts list is empty, only localhost is available. Note that the implicit localhost does not match 'all'")
no_hosts = True
inventory.subset(subset)
hosts = inventory.list_hosts(pattern)
if not hosts and no_hosts is False:
raise AnsibleError("Specified inventory, host pattern and/or --limit leaves us with no hosts to target.")
return hosts
@staticmethod
def get_password_from_file(pwd_file: str) -> str:
b_pwd_file = to_bytes(pwd_file)
if b_pwd_file == b'-':
# ensure its read as bytes
secret = sys.stdin.buffer.read()
elif not os.path.exists(b_pwd_file):
raise AnsibleError("The password file %s was not found" % pwd_file)
elif is_executable(b_pwd_file):
display.vvvv(u'The password file %s is a script.' % to_text(pwd_file))
cmd = [b_pwd_file]
try:
p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
except OSError as e:
raise AnsibleError("Problem occurred when trying to run the password script %s (%s)."
" If this is not a script, remove the executable bit from the file." % (pwd_file, e))
stdout, stderr = p.communicate()
if p.returncode != 0:
raise AnsibleError("The password script %s returned an error (rc=%s): %s" % (pwd_file, p.returncode, to_text(stderr)))
secret = stdout
else:
try:
with open(b_pwd_file, "rb") as password_file:
secret = password_file.read().strip()
except OSError as ex:
raise AnsibleError(f"Could not read password file {pwd_file!r}.") from ex
secret = secret.strip(b'\r\n')
if not secret:
raise AnsibleError('Empty password was provided from file (%s)' % pwd_file)
return to_text(secret)
@classmethod
def cli_executor(cls, args=None):
if args is None:
args = sys.argv
try:
display.debug("starting run")
ansible_dir = Path(C.ANSIBLE_HOME).expanduser()
try:
ansible_dir.mkdir(mode=0o700, exist_ok=True)
except OSError as ex:
display.error_as_warning(f"Failed to create the directory {ansible_dir!r}.", ex)
else:
display.debug("Created the '%s' directory" % ansible_dir)
cli = cls(args)
exit_code = cli.run()
except AnsibleError as ex:
display.error(ex)
exit_code = ex._exit_code
except KeyboardInterrupt:
display.error("User interrupted execution")
exit_code = ExitCode.KEYBOARD_INTERRUPT
except Exception as ex:
try:
raise AnsibleError("Unexpected Exception, this is probably a bug.") from ex
except AnsibleError as ex2:
# DTFIX-FUTURE: clean this up so we're not hacking the internals- re-wrap in an AnsibleCLIUnhandledError that always shows TB, or?
from ansible.module_utils._internal import _traceback
_traceback._is_traceback_enabled = lambda *_args, **_kwargs: True
display.error(ex2)
exit_code = ExitCode.UNKNOWN_ERROR
sys.exit(exit_code)