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# Copyright (C) 2012 Canonical Ltd. # Copyright (C) 2012 Hewlett-Packard Development Company, L.P. # Copyright (C) 2012 Yahoo! Inc. # # Author: Scott Moser <scott.moser@canonical.com> # Author: Juerg Haefliger <juerg.haefliger@hp.com> # Author: Joshua Harlow <harlowja@yahoo-inc.com> # # This file is part of cloud-init. See LICENSE file for license information. import logging import os from typing import List from cloudinit import distros, subp, util from cloudinit.distros.package_management.apt import Apt from cloudinit.distros.package_management.package_manager import PackageManager from cloudinit.distros.parsers.hostname import HostnameConf from cloudinit.net.netplan import CLOUDINIT_NETPLAN_FILE LOG = logging.getLogger(__name__) NETWORK_FILE_HEADER = """\ # This file is generated from information provided by the datasource. Changes # to it will not persist across an instance reboot. To disable cloud-init's # network configuration capabilities, write a file # /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following: # network: {config: disabled} """ LOCALE_CONF_FN = "/etc/default/locale" class Distro(distros.Distro): hostname_conf_fn = "/etc/hostname" network_conf_fn = { "eni": "/etc/network/interfaces.d/50-cloud-init", "netplan": CLOUDINIT_NETPLAN_FILE, } renderer_configs = { "eni": { "eni_path": network_conf_fn["eni"], "eni_header": NETWORK_FILE_HEADER, }, "netplan": { "netplan_path": network_conf_fn["netplan"], "netplan_header": NETWORK_FILE_HEADER, "postcmds": True, }, } # Debian stores dhclient leases at following location: # /var/lib/dhcp/dhclient.<iface_name>.leases dhclient_lease_directory = "/var/lib/dhcp" dhclient_lease_file_regex = r"dhclient\.\w+\.leases" def __init__(self, name, cfg, paths): super().__init__(name, cfg, paths) # This will be used to restrict certain # calls from repeatedly happening (when they # should only happen say once per instance...) self.osfamily = "debian" self.default_locale = "C.UTF-8" self.system_locale = None self.apt = Apt.from_config(self._runner, cfg) self.package_managers: List[PackageManager] = [self.apt] def get_locale(self): """Return the default locale if set, else use default locale""" # read system locale value if not self.system_locale: self.system_locale = read_system_locale() # Return system_locale setting if valid, else use default locale return ( self.system_locale if self.system_locale else self.default_locale ) def apply_locale(self, locale, out_fn=None, keyname="LANG"): """Apply specified locale to system, regenerate if specified locale differs from system default.""" if not out_fn: out_fn = LOCALE_CONF_FN if not locale: raise ValueError("Failed to provide locale value.") # Only call locale regeneration if needed # Update system locale config with specified locale if needed distro_locale = self.get_locale() conf_fn_exists = os.path.exists(out_fn) sys_locale_unset = not self.system_locale if sys_locale_unset: LOG.debug( "System locale not found in %s. " "Assuming system locale is %s based on hardcoded default", LOCALE_CONF_FN, self.default_locale, ) else: LOG.debug( "System locale set to %s via %s", self.system_locale, LOCALE_CONF_FN, ) need_regen = ( locale.lower() != distro_locale.lower() or not conf_fn_exists or sys_locale_unset ) need_conf = not conf_fn_exists or need_regen or sys_locale_unset if need_regen: regenerate_locale( locale, out_fn, keyname=keyname, install_function=self.install_packages, ) else: LOG.debug( "System has '%s=%s' requested '%s', skipping regeneration.", keyname, self.system_locale, locale, ) if need_conf: update_locale_conf( locale, out_fn, keyname=keyname, install_function=self.install_packages, ) # once we've updated the system config, invalidate cache self.system_locale = None def _write_network_state(self, *args, **kwargs): _maybe_remove_legacy_eth0() return super()._write_network_state(*args, **kwargs) def _write_hostname(self, hostname, filename): conf = None try: # Try to update the previous one # so lets see if we can read it first. conf = self._read_hostname_conf(filename) except IOError: create_hostname_file = util.get_cfg_option_bool( self._cfg, "create_hostname_file", True ) if create_hostname_file: pass else: LOG.info( "create_hostname_file is False; hostname file not created" ) return if not conf: conf = HostnameConf("") conf.set_hostname(hostname) util.write_file(filename, str(conf), 0o644) def _read_system_hostname(self): sys_hostname = self._read_hostname(self.hostname_conf_fn) return (self.hostname_conf_fn, sys_hostname) def _read_hostname_conf(self, filename): conf = HostnameConf(util.load_text_file(filename)) conf.parse() return conf def _read_hostname(self, filename, default=None): hostname = None try: conf = self._read_hostname_conf(filename) hostname = conf.hostname except IOError: pass if not hostname: return default return hostname def _get_localhost_ip(self): # Note: http://www.leonardoborda.com/blog/127-0-1-1-ubuntu-debian/ return "127.0.1.1" def set_timezone(self, tz): distros.set_etc_timezone(tz=tz, tz_file=self._find_tz_file(tz)) def package_command(self, command, args=None, pkgs=None): # As of this writing, the only use of `package_command` outside of # distros calling it within their own classes is calling "upgrade" if command != "upgrade": raise RuntimeError(f"Unable to handle {command} command") self.apt.run_package_command("upgrade") def get_primary_arch(self): return util.get_dpkg_architecture() def set_keymap(self, layout: str, model: str, variant: str, options: str): # localectl is broken on some versions of Debian. See # https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/2030788 and # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1038762 # # Instead, write the file directly. According to the keyboard(5) man # page, this file is shared between both X and the console. contents = "\n".join( [ "# This file was generated by cloud-init", "", f'XKBMODEL="{model}"', f'XKBLAYOUT="{layout}"', f'XKBVARIANT="{variant}"', f'XKBOPTIONS="{options}"', "", 'BACKSPACE="guess"', # This is provided on default installs "", ] ) util.write_file( filename="/etc/default/keyboard", content=contents, mode=0o644, omode="w", ) # Due to # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=926037 # if localectl can be used in the future, this line may still # be needed self.manage_service("restart", "console-setup") def _maybe_remove_legacy_eth0(path="/etc/network/interfaces.d/eth0.cfg"): """Ubuntu cloud images previously included a 'eth0.cfg' that had hard coded content. That file would interfere with the rendered configuration if it was present. if the file does not exist do nothing. If the file exists: - with known content, remove it and warn - with unknown content, leave it and warn """ if not os.path.exists(path): return bmsg = "Dynamic networking config may not apply." try: contents = util.load_text_file(path) known_contents = ["auto eth0", "iface eth0 inet dhcp"] lines = [ f.strip() for f in contents.splitlines() if not f.startswith("#") ] if lines == known_contents: util.del_file(path) msg = "removed %s with known contents" % path else: msg = bmsg + " '%s' exists with user configured content." % path except Exception: msg = bmsg + " %s exists, but could not be read." % path LOG.warning(msg) def read_system_locale(sys_path=LOCALE_CONF_FN, keyname="LANG"): """Read system default locale setting, if present""" sys_val = "" if not sys_path: raise ValueError("Invalid path: %s" % sys_path) if os.path.exists(sys_path): locale_content = util.load_text_file(sys_path) sys_defaults = util.load_shell_content(locale_content) sys_val = sys_defaults.get(keyname, "") return sys_val def update_locale_conf( locale, sys_path, keyname="LANG", install_function=None ): """Update system locale config""" LOG.debug( "Updating %s with locale setting %s=%s", sys_path, keyname, locale ) if not subp.which("update-locale"): install_function(["locales"]) subp.subp( [ "update-locale", "--locale-file=" + sys_path, "%s=%s" % (keyname, locale), ], capture=False, ) def regenerate_locale(locale, sys_path, keyname="LANG", install_function=None): """ Run locale-gen for the provided locale and set the default system variable `keyname` appropriately in the provided `sys_path`. """ # special case for locales which do not require regen # % locale -a # C # C.UTF-8 # POSIX if locale.lower() in ["c", "c.utf-8", "posix"]: LOG.debug("%s=%s does not require rengeneration", keyname, locale) return # finally, trigger regeneration if not subp.which("locale-gen"): install_function(["locales"]) LOG.debug("Generating locales for %s", locale) subp.subp(["locale-gen", locale], capture=False)