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# Copyright (C) 2019-2020 Gonéri Le Bouder
#
# This file is part of cloud-init. See LICENSE file for license information.

import crypt
import os
import platform

import cloudinit.distros.bsd
from cloudinit import log as logging
from cloudinit import subp, util

LOG = logging.getLogger(__name__)


class NetBSD(cloudinit.distros.bsd.BSD):
    """
    Distro subclass for NetBSD.

    (N.B. OpenBSD inherits from this class.)
    """

    ci_sudoers_fn = "/usr/pkg/etc/sudoers.d/90-cloud-init-users"
    group_add_cmd_prefix = ["groupadd"]

    def __init__(self, name, cfg, paths):
        super().__init__(name, cfg, paths)
        if os.path.exists("/usr/pkg/bin/pkgin"):
            self.pkg_cmd_install_prefix = ["pkgin", "-y", "install"]
            self.pkg_cmd_remove_prefix = ["pkgin", "-y", "remove"]
            self.pkg_cmd_update_prefix = ["pkgin", "-y", "update"]
            self.pkg_cmd_upgrade_prefix = ["pkgin", "-y", "full-upgrade"]
        else:
            self.pkg_cmd_install_prefix = ["pkg_add", "-U"]
            self.pkg_cmd_remove_prefix = ["pkg_delete"]

    def _get_add_member_to_group_cmd(self, member_name, group_name):
        return ["usermod", "-G", group_name, member_name]

    def add_user(self, name, **kwargs):
        if util.is_user(name):
            LOG.info("User %s already exists, skipping.", name)
            return False

        adduser_cmd = ["useradd"]
        log_adduser_cmd = ["useradd"]

        adduser_opts = {
            "homedir": "-d",
            "gecos": "-c",
            "primary_group": "-g",
            "groups": "-G",
            "shell": "-s",
        }
        adduser_flags = {
            "no_user_group": "--no-user-group",
            "system": "--system",
            "no_log_init": "--no-log-init",
        }

        for key, val in kwargs.items():
            if key in adduser_opts and val and isinstance(val, str):
                adduser_cmd.extend([adduser_opts[key], val])

            elif key in adduser_flags and val:
                adduser_cmd.append(adduser_flags[key])
                log_adduser_cmd.append(adduser_flags[key])

        if "no_create_home" not in kwargs or "system" not in kwargs:
            adduser_cmd += ["-m"]
            log_adduser_cmd += ["-m"]

        adduser_cmd += [name]
        log_adduser_cmd += [name]

        # Run the command
        LOG.info("Adding user %s", name)
        try:
            subp.subp(adduser_cmd, logstring=log_adduser_cmd)
        except Exception:
            util.logexc(LOG, "Failed to create user %s", name)
            raise
        # Set the password if it is provided
        # For security consideration, only hashed passwd is assumed
        passwd_val = kwargs.get("passwd", None)
        if passwd_val is not None:
            self.set_passwd(name, passwd_val, hashed=True)

    def set_passwd(self, user, passwd, hashed=False):
        if hashed:
            hashed_pw = passwd
        else:
            method = crypt.METHOD_BLOWFISH  # pylint: disable=E1101
            hashed_pw = crypt.crypt(passwd, crypt.mksalt(method))

        try:
            subp.subp(["usermod", "-p", hashed_pw, user])
        except Exception:
            util.logexc(LOG, "Failed to set password for %s", user)
            raise
        self.unlock_passwd(user)

    def force_passwd_change(self, user):
        try:
            subp.subp(["usermod", "-F", user])
        except Exception:
            util.logexc(LOG, "Failed to set pw expiration for %s", user)
            raise

    def lock_passwd(self, name):
        try:
            subp.subp(["usermod", "-C", "yes", name])
        except Exception:
            util.logexc(LOG, "Failed to lock user %s", name)
            raise

    def unlock_passwd(self, name):
        try:
            subp.subp(["usermod", "-C", "no", name])
        except Exception:
            util.logexc(LOG, "Failed to unlock user %s", name)
            raise

    def apply_locale(self, locale, out_fn=None):
        LOG.debug("Cannot set the locale.")

    def _get_pkg_cmd_environ(self):
        """Return env vars used in NetBSD package_command operations"""
        os_release = platform.release()
        os_arch = platform.machine()
        e = os.environ.copy()
        e[
            "PKG_PATH"
        ] = "http://cdn.netbsd.org/pub/pkgsrc/packages/NetBSD/%s/%s/All" % (
            os_arch,
            os_release,
        )
        return e

    def update_package_sources(self):
        pass


class Distro(NetBSD):
    pass


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