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445ff39f94
* [WIP] become plugins Move from hardcoded method to plugins for ease of use, expansion and overrides - load into connection as it is going to be the main consumer - play_context will also use to keep backwards compat API - ensure shell is used to construct commands when needed - migrate settings remove from base config in favor of plugin specific configs - cleanup ansible-doc - add become plugin docs - remove deprecated sudo/su code and keywords - adjust become options for cli - set plugin options from context - ensure config defs are avaialbe before instance - refactored getting the shell plugin, fixed tests - changed into regex as they were string matching, which does not work with random string generation - explicitly set flags for play context tests - moved plugin loading up front - now loads for basedir also - allow pyc/o for non m modules - fixes to tests and some plugins - migrate to play objects fro play_context - simiplify gathering - added utf8 headers - moved option setting - add fail msg to dzdo - use tuple for multiple options on fail/missing - fix relative plugin paths - shift from play context to play - all tasks already inherit this from play directly - remove obsolete 'set play' - correct environment handling - add wrap_exe option to pfexec - fix runas to noop - fixed setting play context - added password configs - removed required false - remove from doc building till they are ready future development: - deal with 'enable' and 'runas' which are not 'command wrappers' but 'state flags' and currently hardcoded in diff subsystems * cleanup remove callers to removed func removed --sudo cli doc refs remove runas become_exe ensure keyerorr on plugin also fix backwards compat, missing method is attributeerror, not ansible error get remote_user consistently ignore missing system_tmpdirs on plugin load correct config precedence add deprecation fix networking imports backwards compat for plugins using BECOME_METHODS * Port become_plugins to context.CLIARGS This is a work in progress: * Stop passing options around everywhere as we can use context.CLIARGS instead * Refactor make_become_commands as asked for by alikins * Typo in comment fix * Stop loading values from the cli in more than one place Both play and play_context were saving default values from the cli arguments directly. This changes things so that the default values are loaded into the play and then play_context takes them from there. * Rename BECOME_PLUGIN_PATH to DEFAULT_BECOME_PLUGIN_PATH As alikins said, all other plugin paths are named DEFAULT_plugintype_PLUGIN_PATH. If we're going to rename these, that should be done all at one time rather than piecemeal. * One to throw away This is a set of hacks to get setting FieldAttribute defaults to command line args to work. It's not fully done yet. After talking it over with sivel and jimi-c this should be done by fixing FieldAttributeBase and _get_parent_attribute() calls to do the right thing when there is a non-None default. What we want to be able to do ideally is something like this: class Base(FieldAttributeBase): _check_mode = FieldAttribute([..] default=lambda: context.CLIARGS['check']) class Play(Base): # lambda so that we have a chance to parse the command line args # before we get here. In the future we might be able to restructure # this so that the cli parsing code runs before these classes are # defined. class Task(Base): pass And still have a playbook like this function: --- - hosts: tasks: - command: whoami check_mode: True (The check_mode test that is added as a separate commit in this PR will let you test variations on this case). There's a few separate reasons that the code doesn't let us do this or a non-ugly workaround for this as written right now. The fix that jimi-c, sivel, and I talked about may let us do this or it may still require a workaround (but less ugly) (having one class that has the FieldAttributes with default values and one class that inherits from that but just overrides the FieldAttributes which now have defaults) * Revert "One to throw away" This reverts commit 23aa883cbed11429ef1be2a2d0ed18f83a3b8064. * Set FieldAttr defaults directly from CLIARGS * Remove dead code * Move timeout directly to PlayContext, it's never needed on Play * just for backwards compat, add a static version of BECOME_METHODS to constants * Make the become attr on the connection public, since it's used outside of the connection * Logic fix * Nuke connection testing if it supports specific become methods * Remove unused vars * Address rebase issues * Fix path encoding issue * Remove unused import * Various cleanups * Restore network_cli check in _low_level_execute_command * type improvements for cliargs_deferred_get and swap shallowcopy to default to False * minor cleanups * Allow the su plugin to work, since it doesn't define a prompt the same way * Fix up ksu become plugin * Only set prompt if build_become_command was called * Add helper to assist connection plugins in knowing they need to wait for a prompt * Fix tests and code expectations * Doc updates * Various additional minor cleanups * Make doas functional * Don't change connection signature, load become plugin from TaskExecutor * Remove unused imports * Add comment about setting the become plugin on the playcontext * Fix up tests for recent changes * Support 'Password:' natively for the doas plugin * Make default prompts raw * wording cleanups. ci_complete * Remove unrelated changes * Address spelling mistake * Restore removed test, and udpate to use new functionality * Add changelog fragment * Don't hard fail in set_attributes_from_cli on missing CLI keys * Remove unrelated change to loader * Remove internal deprecated FieldAttributes now * Emit deprecation warnings now
89 lines
2.9 KiB
Python
89 lines
2.9 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright: (c) 2018, Ansible Project
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# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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from abc import abstractmethod
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from random import choice
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from string import ascii_lowercase
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from gettext import dgettext
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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.plugins import AnsiblePlugin
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def _gen_id(length=32):
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''' return random string used to identify the current privelege escalation '''
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return ''.join(choice(ascii_lowercase) for x in range(length))
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class BecomeBase(AnsiblePlugin):
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name = None
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# messages for detecting prompted password issues
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fail = tuple()
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missing = tuple()
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# many connection plugins cannot provide tty, set to True if your become
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# plugin requires a tty, i.e su
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require_tty = False
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# prompt to match
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prompt = ''
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def __init__(self):
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super(BecomeBase, self).__init__()
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self._id = ''
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self.success = ''
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def expect_prompt(self):
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"""This function assists connection plugins in determining if they need to wait for
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a prompt. Both a prompt and a password are required.
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"""
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return self.prompt and self.get_option('become_pass')
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def _build_success_command(self, cmd, shell, noexe=False):
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if not all((cmd, shell, self.success)):
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return cmd
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cmd = shlex_quote('%s %s %s %s' % (shell.ECHO, self.success, shell.COMMAND_SEP, cmd))
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exe = getattr(shell, 'executable', None)
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if exe and not noexe:
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cmd = '%s -c %s' % (exe, cmd)
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return cmd
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@abstractmethod
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def build_become_command(self, cmd, shell):
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self._id = _gen_id()
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self.success = 'BECOME-SUCCESS-%s' % self._id
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def check_success(self, b_output):
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b_success = to_bytes(self.success)
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return any(b_success in l.rstrip() for l in b_output.splitlines(True))
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def check_password_prompt(self, b_output):
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''' checks if the expected passwod prompt exists in b_output '''
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if self.prompt:
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b_prompt = to_bytes(self.prompt).strip()
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return any(l.strip().startswith(b_prompt) for l in b_output.splitlines())
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return False
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def _check_password_error(self, b_out, msg):
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''' returns True/False if domain specific i18n version of msg is found in b_out '''
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b_fail = to_bytes(dgettext(self.name, msg))
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return b_fail and b_fail in b_out
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def check_incorrect_password(self, b_output):
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for errstring in self.fail:
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if self._check_password_error(b_output, errstring):
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return True
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return False
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def check_missing_password(self, b_output):
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for errstring in self.missing:
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if self._check_password_error(b_output, errstring):
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return True
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return False
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