FM / config

/snap/core18/2979/usr/lib/python3/dist-packages/cloudinit/config/

/snap/core18/2979/usr/lib/python3/dist-packages/cloudinit/config

Name	Size	Mode	Actions
schemas/	-	0755	rm
__pycache__/	-	0755	rm
cc_ansible.py	8568	0644	edit dl rm
cc_apk_configure.py	5883	0644	edit dl rm
cc_apt_configure.py	33237	0644	edit dl rm
cc_apt_pipelining.py	2888	0644	edit dl rm
cc_bootcmd.py	2940	0644	edit dl rm
cc_byobu.py	3757	0644	edit dl rm
cc_ca_certs.py	8251	0644	edit dl rm
cc_chef.py	14118	0644	edit dl rm
cc_disable_ec2_metadata.py	2093	0644	edit dl rm
cc_disk_setup.py	33115	0644	edit dl rm
cc_fan.py	3184	0644	edit dl rm
cc_final_message.py	3490	0644	edit dl rm
cc_growpart.py	19890	0644	edit dl rm
cc_grub_dpkg.py	5619	0644	edit dl rm
cc_install_hotplug.py	3901	0644	edit dl rm
cc_keyboard.py	2126	0644	edit dl rm
cc_keys_to_console.py	3713	0644	edit dl rm
cc_landscape.py	4976	0644	edit dl rm
cc_locale.py	1923	0644	edit dl rm
cc_lxd.py	18387	0644	edit dl rm
cc_mcollective.py	6349	0644	edit dl rm
cc_migrator.py	3599	0644	edit dl rm
cc_mounts.py	19486	0644	edit dl rm
cc_ntp.py	20172	0644	edit dl rm
cc_package_update_upgrade_install.py	4530	0644	edit dl rm
cc_phone_home.py	5636	0644	edit dl rm
cc_power_state_change.py	7838	0644	edit dl rm
cc_puppet.py	14066	0644	edit dl rm
cc_refresh_rmc_and_interface.py	5614	0644	edit dl rm
cc_reset_rmc.py	4642	0644	edit dl rm
cc_resizefs.py	10818	0644	edit dl rm
cc_resolv_conf.py	5130	0644	edit dl rm
cc_rh_subscription.py	17456	0644	edit dl rm
cc_rightscale_userdata.py	4407	0644	edit dl rm
cc_rsyslog.py	10001	0644	edit dl rm
cc_runcmd.py	2993	0644	edit dl rm
cc_salt_minion.py	5668	0644	edit dl rm
cc_scripts_per_boot.py	1717	0644	edit dl rm
cc_scripts_per_instance.py	1873	0644	edit dl rm
cc_scripts_per_once.py	1823	0644	edit dl rm
cc_scripts_user.py	1913	0644	edit dl rm
cc_scripts_vendor.py	2367	0644	edit dl rm
cc_seed_random.py	4928	0644	edit dl rm
cc_set_hostname.py	5012	0644	edit dl rm
cc_set_passwords.py	11315	0644	edit dl rm
cc_snap.py	6539	0644	edit dl rm
cc_spacewalk.py	3604	0644	edit dl rm
cc_ssh.py	14371	0644	edit dl rm
cc_ssh_authkey_fingerprints.py	4338	0644	edit dl rm
cc_ssh_import_id.py	5955	0644	edit dl rm
cc_timezone.py	1475	0644	edit dl rm
cc_ubuntu_advantage.py	17281	0644	edit dl rm
cc_ubuntu_autoinstall.py	4672	0644	edit dl rm
cc_ubuntu_drivers.py	4736	0644	edit dl rm
cc_update_etc_hosts.py	5235	0644	edit dl rm
cc_update_hostname.py	3721	0644	edit dl rm
cc_users_groups.py	7787	0644	edit dl rm
cc_wireguard.py	9507	0644	edit dl rm
cc_write_files.py	6910	0644	edit dl rm
cc_write_files_deferred.py	1718	0644	edit dl rm
cc_yum_add_repo.py	7653	0644	edit dl rm
cc_zypper_add_repo.py	6840	0644	edit dl rm
modules.py	11700	0644	edit dl rm
schema.py	44173	0644	edit dl rm
__init__.py	14	0644	edit dl rm

Edit: /snap/core18/2979/usr/lib/python3/dist-packages/cloudinit/config/cc_seed_random.py (4928B)

# Copyright (C) 2013 Yahoo! Inc.
# Copyright (C) 2014 Canonical, Ltd
#
# Author: Joshua Harlow <harlowja@yahoo-inc.com>
# Author: Dustin Kirkland <kirkland@ubuntu.com>
# Author: Scott Moser <scott.moser@canonical.com>
#
# This file is part of cloud-init. See LICENSE file for license information.
"""Seed Random: Provide random seed data"""

import base64
import os
from io import BytesIO
from logging import Logger
from textwrap import dedent

from cloudinit import log as logging
from cloudinit import subp, util
from cloudinit.cloud import Cloud
from cloudinit.config import Config
from cloudinit.config.schema import MetaSchema, get_meta_doc
from cloudinit.distros import ALL_DISTROS
from cloudinit.settings import PER_INSTANCE

LOG = logging.getLogger(__name__)

MODULE_DESCRIPTION = """\
All cloud instances started from the same image will produce very similar
data when they are first booted as they are all starting with the same seed
for the kernel's entropy keyring. To avoid this, random seed data can be
provided to the instance either as a string or by specifying a command to run
to generate the data.

Configuration for this module is under the ``random_seed`` config key. If
the cloud provides its own random seed data, it will be appended to ``data``
before it is written to ``file``.

If the ``command`` key is specified, the given command will be executed.  This
will happen after ``file`` has been populated.  That command's environment will
contain the value of the ``file`` key as ``RANDOM_SEED_FILE``. If a command is
specified that cannot be run, no error will be reported unless
``command_required`` is set to true.
"""

meta: MetaSchema = {
    "id": "cc_seed_random",
    "name": "Seed Random",
    "title": "Provide random seed data",
    "description": MODULE_DESCRIPTION,
    "distros": [ALL_DISTROS],
    "frequency": PER_INSTANCE,
    "examples": [
        dedent(
            """\
            random_seed:
              file: /dev/urandom
              data: my random string
              encoding: raw
              command: ['sh', '-c', 'dd if=/dev/urandom of=$RANDOM_SEED_FILE']
              command_required: true
            """
        ),
        dedent(
            """\
            # To use 'pollinate' to gather data from a remote entropy
            # server and write it to '/dev/urandom', the following
            # could be used:
            random_seed:
              file: /dev/urandom
              command: ["pollinate", "--server=http://local.polinate.server"]
              command_required: true
            """
        ),
    ],
    "activate_by_schema_keys": [],
}

__doc__ = get_meta_doc(meta)

def _decode(data, encoding=None):
    if not data:
        return b""
    if not encoding or encoding.lower() in ["raw"]:
        return util.encode_text(data)
    elif encoding.lower() in ["base64", "b64"]:
        return base64.b64decode(data)
    elif encoding.lower() in ["gzip", "gz"]:
        return util.decomp_gzip(data, quiet=False, decode=None)
    else:
        raise IOError("Unknown random_seed encoding: %s" % (encoding))

def handle_random_seed_command(command, required, env=None):
    if not command and required:
        raise ValueError("no command found but required=true")
    elif not command:
        LOG.debug("no command provided")
        return

cmd = command[0]
    if not subp.which(cmd):
        if required:
            raise ValueError(
                "command '{cmd}' not found but required=true".format(cmd=cmd)
            )
        else:
            LOG.debug("command '%s' not found for seed_command", cmd)
            return
    subp.subp(command, env=env, capture=False)

def handle(
    name: str, cfg: Config, cloud: Cloud, log: Logger, args: list
) -> None:
    mycfg = cfg.get("random_seed", {})
    seed_path = mycfg.get("file", "/dev/urandom")
    seed_data = mycfg.get("data", b"")

seed_buf = BytesIO()
    if seed_data:
        seed_buf.write(_decode(seed_data, encoding=mycfg.get("encoding")))

# 'random_seed' is set up by Azure datasource, and comes already in
    # openstack meta_data.json
    metadata = cloud.datasource.metadata
    if metadata and "random_seed" in metadata:
        seed_buf.write(util.encode_text(metadata["random_seed"]))

seed_data = seed_buf.getvalue()
    if len(seed_data):
        log.debug(
            "%s: adding %s bytes of random seed entropy to %s",
            name,
            len(seed_data),
            seed_path,
        )
        util.append_file(seed_path, seed_data)

command = mycfg.get("command", None)
    req = mycfg.get("command_required", False)
    try:
        env = os.environ.copy()
        env["RANDOM_SEED_FILE"] = seed_path
        handle_random_seed_command(command=command, required=req, env=env)
    except ValueError as e:
        log.warning("handling random command [%s] failed: %s", command, e)
        raise e

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