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Edit file: /usr/lib/python3.9/site-packages/ansible/plugins/shell/__init__.py

# (c) 2016 RedHat
#
# 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/>.
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type

import os
import os.path
import random
import re
import shlex
import time

from ansible.errors import AnsibleError
from ansible.module_utils._text import to_native
from ansible.module_utils.six import text_type, string_types
from ansible.module_utils.common._collections_compat import Mapping, Sequence
from ansible.plugins import AnsiblePlugin

_USER_HOME_PATH_RE = re.compile(r'^~[_.A-Za-z0-9][-_.A-Za-z0-9]*$')

class ShellBase(AnsiblePlugin):
    def __init__(self):

super(ShellBase, self).__init__()

self.env = {}
        self.tmpdir = None
        self.executable = None

def _normalize_system_tmpdirs(self):
        # Normalize the tmp directory strings. We don't use expanduser/expandvars because those
        # can vary between remote user and become user.  Therefore the safest practice will be for
        # this to always be specified as full paths)
        normalized_paths = [d.rstrip('/') for d in self.get_option('system_tmpdirs')]

# Make sure all system_tmpdirs are absolute otherwise they'd be relative to the login dir
        # which is almost certainly going to fail in a cornercase.
        if not all(os.path.isabs(d) for d in normalized_paths):
            raise AnsibleError('The configured system_tmpdirs contains a relative path: {0}. All'
                               ' system_tmpdirs must be absolute'.format(to_native(normalized_paths)))

self.set_option('system_tmpdirs', normalized_paths)

def set_options(self, task_keys=None, var_options=None, direct=None):

super(ShellBase, self).set_options(task_keys=task_keys, var_options=var_options, direct=direct)

# set env if needed, deal with environment's 'dual nature' list of dicts or dict
        # TODO: config system should already resolve this so we should be able to just iterate over dicts
        env = self.get_option('environment')
        if isinstance(env, string_types):
            raise AnsibleError('The "envirionment" keyword takes a list of dictionaries or a dictionary, not a string')
        if not isinstance(env, Sequence):
            env = [env]
        for env_dict in env:
            if not isinstance(env_dict, Mapping):
                raise AnsibleError('The "envirionment" keyword takes a list of dictionaries (or single dictionary), but got a "%s" instead' % type(env_dict))
            self.env.update(env_dict)

# We can remove the try: except in the future when we make ShellBase a proper subset of
        # *all* shells.  Right now powershell and third party shells which do not use the
        # shell_common documentation fragment (and so do not have system_tmpdirs) will fail
        try:
            self._normalize_system_tmpdirs()
        except KeyError:
            pass

@staticmethod
    def _generate_temp_dir_name():
        return 'ansible-tmp-%s-%s-%s' % (time.time(), os.getpid(), random.randint(0, 2**48))

def env_prefix(self, **kwargs):
        return ' '.join(['%s=%s' % (k, shlex.quote(text_type(v))) for k, v in kwargs.items()])

def join_path(self, *args):
        return os.path.join(*args)

# some shells (eg, powershell) are snooty about filenames/extensions, this lets the shell plugin have a say
    def get_remote_filename(self, pathname):
        base_name = os.path.basename(pathname.strip())
        return base_name.strip()

def path_has_trailing_slash(self, path):
        return path.endswith('/')

def chmod(self, paths, mode):
        cmd = ['chmod', mode]
        cmd.extend(paths)
        cmd = [shlex.quote(c) for c in cmd]

return ' '.join(cmd)

def chown(self, paths, user):
        cmd = ['chown', user]
        cmd.extend(paths)
        cmd = [shlex.quote(c) for c in cmd]

return ' '.join(cmd)

def chgrp(self, paths, group):
        cmd = ['chgrp', group]
        cmd.extend(paths)
        cmd = [shlex.quote(c) for c in cmd]

return ' '.join(cmd)

def set_user_facl(self, paths, user, mode):
        """Only sets acls for users as that's really all we need"""
        cmd = ['setfacl', '-m', 'u:%s:%s' % (user, mode)]
        cmd.extend(paths)
        cmd = [shlex.quote(c) for c in cmd]

return ' '.join(cmd)

def remove(self, path, recurse=False):
        path = shlex.quote(path)
        cmd = 'rm -f '
        if recurse:
            cmd += '-r '
        return cmd + "%s %s" % (path, self._SHELL_REDIRECT_ALLNULL)

def exists(self, path):
        cmd = ['test', '-e', shlex.quote(path)]
        return ' '.join(cmd)

def mkdtemp(self, basefile=None, system=False, mode=0o700, tmpdir=None):
        if not basefile:
            basefile = self.__class__._generate_temp_dir_name()

# When system is specified we have to create this in a directory where
        # other users can read and access the tmp directory.
        # This is because we use system to create tmp dirs for unprivileged users who are
        # sudo'ing to a second unprivileged user.
        # The 'system_tmpdirs' setting defines dirctories we can use for this purpose
        # the default are, /tmp and /var/tmp.
        # So we only allow one of those locations if system=True, using the
        # passed in tmpdir if it is valid or the first one from the setting if not.

if system:
            if tmpdir:
                tmpdir = tmpdir.rstrip('/')

if tmpdir in self.get_option('system_tmpdirs'):
                basetmpdir = tmpdir
            else:
                basetmpdir = self.get_option('system_tmpdirs')[0]
        else:
            if tmpdir is None:
                basetmpdir = self.get_option('remote_tmp')
            else:
                basetmpdir = tmpdir

basetmp = self.join_path(basetmpdir, basefile)

# use mkdir -p to ensure parents exist, but mkdir fullpath to ensure last one is created by us
        cmd = 'mkdir -p %s echo %s %s' % (self._SHELL_SUB_LEFT, basetmpdir, self._SHELL_SUB_RIGHT)
        cmd += '%s mkdir %s echo %s %s' % (self._SHELL_AND, self._SHELL_SUB_LEFT, basetmp, self._SHELL_SUB_RIGHT)
        cmd += ' %s echo %s=%s echo %s %s' % (self._SHELL_AND, basefile, self._SHELL_SUB_LEFT, basetmp, self._SHELL_SUB_RIGHT)

# change the umask in a subshell to achieve the desired mode
        # also for directories created with `mkdir -p`
        if mode:
            tmp_umask = 0o777 & ~mode
            cmd = '%s umask %o %s %s %s' % (self._SHELL_GROUP_LEFT, tmp_umask, self._SHELL_AND, cmd, self._SHELL_GROUP_RIGHT)

return cmd

def expand_user(self, user_home_path, username=''):
        ''' Return a command to expand tildes in a path

It can be either "~" or "~username". We just ignore $HOME
        We use the POSIX definition of a username:
            http://pubs.opengroup.org/onlinepubs/000095399/basedefs/xbd_chap03.html#tag_03_426
            http://pubs.opengroup.org/onlinepubs/000095399/basedefs/xbd_chap03.html#tag_03_276

Falls back to 'current working directory' as we assume 'home is where the remote user ends up'
        '''

# Check that the user_path to expand is safe
        if user_home_path != '~':
            if not _USER_HOME_PATH_RE.match(user_home_path):
                # shlex.quote will make the shell return the string verbatim
                user_home_path = shlex.quote(user_home_path)
        elif username:
            # if present the user name is appended to resolve "that user's home"
            user_home_path += username

return 'echo %s' % user_home_path

def pwd(self):
        """Return the working directory after connecting"""
        return 'echo %spwd%s' % (self._SHELL_SUB_LEFT, self._SHELL_SUB_RIGHT)

def build_module_command(self, env_string, shebang, cmd, arg_path=None):
        # don't quote the cmd if it's an empty string, because this will break pipelining mode
        if cmd.strip() != '':
            cmd = shlex.quote(cmd)

cmd_parts = []
        if shebang:
            shebang = shebang.replace("#!", "").strip()
        else:
            shebang = ""
        cmd_parts.extend([env_string.strip(), shebang, cmd])
        if arg_path is not None:
            cmd_parts.append(arg_path)
        new_cmd = " ".join(cmd_parts)
        return new_cmd

def append_command(self, cmd, cmd_to_append):
        """Append an additional command if supported by the shell"""

if self._SHELL_AND:
            cmd += ' %s %s' % (self._SHELL_AND, cmd_to_append)

return cmd

def wrap_for_exec(self, cmd):
        """wrap script execution with any necessary decoration (eg '&' for quoted powershell script paths)"""
        return cmd

def quote(self, cmd):
        """Returns a shell-escaped string that can be safely used as one token in a shell command line"""
        return shlex.quote(cmd)

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