Mini Shell
# dnf configuration classes.
#
# Copyright (C) 2016-2017 Red Hat, Inc.
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions of
# the GNU General Public License v.2, or (at your option) any later version.
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY expressed or implied, including the implied warranties 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 this program; if not, write to the
# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA. Any Red Hat trademarks that are incorporated in the
# source code or documentation are not subject to the GNU General Public
# License and may only be used or replicated with the express permission of
# Red Hat, Inc.
#
from __future__ import absolute_import
from __future__ import unicode_literals
from dnf.yum import misc
from dnf.i18n import ucd, _
from dnf.pycomp import basestring, urlparse
import fnmatch
import dnf.conf.substitutions
import dnf.const
import dnf.exceptions
import dnf.pycomp
import dnf.util
import hawkey
import logging
import os
import libdnf.conf
import libdnf.repo
import tempfile
PRIO_EMPTY = libdnf.conf.Option.Priority_EMPTY
PRIO_DEFAULT = libdnf.conf.Option.Priority_DEFAULT
PRIO_MAINCONFIG = libdnf.conf.Option.Priority_MAINCONFIG
PRIO_AUTOMATICCONFIG = libdnf.conf.Option.Priority_AUTOMATICCONFIG
PRIO_REPOCONFIG = libdnf.conf.Option.Priority_REPOCONFIG
PRIO_PLUGINDEFAULT = libdnf.conf.Option.Priority_PLUGINDEFAULT
PRIO_PLUGINCONFIG = libdnf.conf.Option.Priority_PLUGINCONFIG
PRIO_COMMANDLINE = libdnf.conf.Option.Priority_COMMANDLINE
PRIO_RUNTIME = libdnf.conf.Option.Priority_RUNTIME
logger = logging.getLogger('dnf')
class BaseConfig(object):
"""Base class for storing configuration definitions.
Subclass when creating your own definitions.
"""
def __init__(self, config=None, section=None, parser=None):
self.__dict__["_config"] = config
self._section = section
def __getattr__(self, name):
if "_config" not in self.__dict__:
raise AttributeError("'{}' object has no attribute '{}'".format(self.__class__, name))
option = getattr(self._config, name)
if option is None:
return None
try:
value = option().getValue()
except Exception as ex:
return None
if isinstance(value, str):
return ucd(value)
return value
def __setattr__(self, name, value):
option = getattr(self._config, name, None)
if option is None:
# unknown config option, store to BaseConfig only
return super(BaseConfig, self).__setattr__(name, value)
self._set_value(name, value, PRIO_RUNTIME)
def __str__(self):
out = []
out.append('[%s]' % self._section)
if self._config:
for optBind in self._config.optBinds():
try:
value = optBind.second.getValueString()
except RuntimeError:
value = ""
out.append('%s: %s' % (optBind.first, value))
return '\n'.join(out)
def _has_option(self, name):
method = getattr(self._config, name, None)
return method is not None
def _get_value(self, name):
method = getattr(self._config, name, None)
if method is None:
return None
return method().getValue()
def _get_priority(self, name):
method = getattr(self._config, name, None)
if method is None:
return None
return method().getPriority()
def _set_value(self, name, value, priority=PRIO_RUNTIME):
"""Set option's value if priority is equal or higher
than current priority."""
method = getattr(self._config, name, None)
if method is None:
raise Exception("Option \"" + name + "\" does not exists")
option = method()
if value is None:
try:
option.set(priority, value)
except Exception:
pass
else:
try:
if isinstance(value, list) or isinstance(value, tuple):
option.set(priority, libdnf.conf.VectorString(value))
elif (isinstance(option, libdnf.conf.OptionBool)
or isinstance(option, libdnf.conf.OptionChildBool)
) and isinstance(value, int):
option.set(priority, bool(value))
else:
option.set(priority, value)
except RuntimeError as e:
raise dnf.exceptions.ConfigError(_("Error parsing '%s': %s")
% (value, str(e)),
raw_error=str(e))
def _populate(self, parser, section, filename, priority=PRIO_DEFAULT):
"""Set option values from an INI file section."""
if parser.hasSection(section):
for name in parser.options(section):
value = parser.getSubstitutedValue(section, name)
if not value or value == 'None':
value = ''
if hasattr(self._config, name):
try:
self._config.optBinds().at(name).newString(priority, value)
except RuntimeError as e:
logger.error(_('Invalid configuration value: %s=%s in %s; %s'),
ucd(name), ucd(value), ucd(filename), str(e))
else:
if name == 'arch' and hasattr(self, name):
setattr(self, name, value)
else:
logger.debug(
_('Unknown configuration option: %s = %s in %s'),
ucd(name), ucd(value), ucd(filename))
def dump(self):
# :api
"""Return a string representing the values of all the
configuration options.
"""
output = ['[%s]' % self._section]
if self._config:
for optBind in self._config.optBinds():
# if not opt._is_runtimeonly():
try:
output.append('%s = %s' % (optBind.first, optBind.second.getValueString()))
except RuntimeError:
pass
return '\n'.join(output) + '\n'
@staticmethod
def write_raw_configfile(filename, section_id, substitutions, modify):
# :api
"""
filename - name of config file (.conf or .repo)
section_id - id of modified section (e.g. main, fedora, updates)
substitutions - instance of base.conf.substitutions
modify - dict of modified options
"""
parser = libdnf.conf.ConfigParser()
parser.read(filename)
# b/c repoids can have $values in them we need to map both ways to figure
# out which one is which
if not parser.hasSection(section_id):
for sect in parser.getData():
if libdnf.conf.ConfigParser.substitute(sect, substitutions) == section_id:
section_id = sect
for name, value in modify.items():
if isinstance(value, list):
value = ' '.join(value)
parser.setValue(section_id, name, value)
parser.write(filename, False)
class MainConf(BaseConfig):
# :api
"""Configuration option definitions for dnf.conf's [main] section."""
def __init__(self, section='main', parser=None):
# pylint: disable=R0915
config = libdnf.conf.ConfigMain()
super(MainConf, self).__init__(config, section, parser)
self._set_value('pluginpath', [dnf.const.PLUGINPATH], PRIO_DEFAULT)
self._set_value('pluginconfpath', [dnf.const.PLUGINCONFPATH], PRIO_DEFAULT)
self.substitutions = dnf.conf.substitutions.Substitutions()
self.arch = hawkey.detect_arch()
self._config.system_cachedir().set(PRIO_DEFAULT, dnf.const.SYSTEM_CACHEDIR)
# setup different cache and log for non-privileged users
if dnf.util.am_i_root():
cachedir = dnf.const.SYSTEM_CACHEDIR
logdir = '/var/log'
else:
try:
cachedir = logdir = misc.getCacheDir()
except (IOError, OSError) as e:
msg = _('Could not set cachedir: {}').format(ucd(e))
raise dnf.exceptions.Error(msg)
self._config.cachedir().set(PRIO_DEFAULT, cachedir)
self._config.logdir().set(PRIO_DEFAULT, logdir)
# track list of temporary files created
self.tempfiles = []
def __del__(self):
for file_name in self.tempfiles:
os.unlink(file_name)
@property
def get_reposdir(self):
# :api
"""Returns the value of reposdir"""
myrepodir = None
# put repo file into first reposdir which exists or create it
for rdir in self._get_value('reposdir'):
if os.path.exists(rdir):
myrepodir = rdir
break
if not myrepodir:
myrepodir = self._get_value('reposdir')[0]
dnf.util.ensure_dir(myrepodir)
return myrepodir
def _check_remote_file(self, optname):
"""
In case the option value is a remote URL, download it to the temporary location
and use this temporary file instead.
"""
prio = self._get_priority(optname)
val = self._get_value(optname)
if isinstance(val, basestring):
location = urlparse.urlparse(val)
if location[0] in ('file', ''):
# just strip the file:// prefix
self._set_value(optname, location.path, prio)
else:
downloader = libdnf.repo.Downloader()
temp_fd, temp_path = tempfile.mkstemp(prefix='dnf-downloaded-config-')
self.tempfiles.append(temp_path)
try:
downloader.downloadURL(None, val, temp_fd)
except RuntimeError as e:
raise dnf.exceptions.ConfigError(
_('Configuration file URL "{}" could not be downloaded:\n'
' {}').format(val, str(e)))
else:
self._set_value(optname, temp_path, prio)
finally:
os.close(temp_fd)
def _search_inside_installroot(self, optname):
"""
Return root used as prefix for option (installroot or "/"). When specified from commandline
it returns value from conf.installroot
"""
installroot = self._get_value('installroot')
if installroot == "/":
return installroot
prio = self._get_priority(optname)
# don't modify paths specified on commandline
if prio >= PRIO_COMMANDLINE:
return installroot
val = self._get_value(optname)
# if it exists inside installroot use it (i.e. adjust configuration)
# for lists any component counts
if not isinstance(val, str):
if any(os.path.exists(os.path.join(installroot, p.lstrip('/'))) for p in val):
self._set_value(
optname,
libdnf.conf.VectorString([self._prepend_installroot_path(p) for p in val]),
prio
)
return installroot
elif os.path.exists(os.path.join(installroot, val.lstrip('/'))):
self._set_value(optname, self._prepend_installroot_path(val), prio)
return installroot
return "/"
def prepend_installroot(self, optname):
# :api
prio = self._get_priority(optname)
new_path = self._prepend_installroot_path(self._get_value(optname))
self._set_value(optname, new_path, prio)
def _prepend_installroot_path(self, path):
root_path = os.path.join(self._get_value('installroot'), path.lstrip('/'))
return libdnf.conf.ConfigParser.substitute(root_path, self.substitutions)
def _configure_from_options(self, opts):
"""Configure parts of CLI from the opts """
config_args = ['plugins', 'version', 'config_file_path',
'debuglevel', 'errorlevel', 'installroot',
'best', 'assumeyes', 'assumeno', 'clean_requirements_on_remove', 'gpgcheck',
'showdupesfromrepos', 'plugins', 'ip_resolve',
'rpmverbosity', 'disable_excludes', 'color',
'downloadonly', 'exclude', 'excludepkgs', 'skip_broken',
'tsflags', 'arch', 'basearch', 'ignorearch', 'cacheonly', 'comment']
for name in config_args:
value = getattr(opts, name, None)
if value is not None and value != []:
if self._has_option(name):
appendValue = False
if self._config:
try:
appendValue = self._config.optBinds().at(name).getAddValue()
except RuntimeError:
# fails if option with "name" does not exist in _config (libdnf)
pass
if appendValue:
add_priority = dnf.conf.PRIO_COMMANDLINE
if add_priority < self._get_priority(name):
add_priority = self._get_priority(name)
for item in value:
if item:
self._set_value(name, self._get_value(name) + [item], add_priority)
else:
self._set_value(name, [], dnf.conf.PRIO_COMMANDLINE)
else:
self._set_value(name, value, dnf.conf.PRIO_COMMANDLINE)
elif hasattr(self, name):
setattr(self, name, value)
else:
logger.warning(_('Unknown configuration option: %s = %s'),
ucd(name), ucd(value))
if getattr(opts, 'gpgcheck', None) is False:
self._set_value("localpkg_gpgcheck", False, dnf.conf.PRIO_COMMANDLINE)
if hasattr(opts, 'main_setopts'):
# now set all the non-first-start opts from main from our setopts
# pylint: disable=W0212
for name, values in opts.main_setopts.items():
for val in values:
if hasattr(self._config, name):
try:
# values in main_setopts are strings, try to parse it using newString()
self._config.optBinds().at(name).newString(PRIO_COMMANDLINE, val)
except RuntimeError as e:
raise dnf.exceptions.ConfigError(
_("Error parsing --setopt with key '%s', value '%s': %s")
% (name, val, str(e)), raw_error=str(e))
else:
# if config option with "name" doesn't exist in _config, it could be defined
# only in Python layer
if hasattr(self, name):
setattr(self, name, val)
else:
msg = _("Main config did not have a %s attr. before setopt")
logger.warning(msg, name)
def exclude_pkgs(self, pkgs):
# :api
name = "excludepkgs"
if pkgs is not None and pkgs != []:
if self._has_option(name):
self._set_value(name, pkgs, dnf.conf.PRIO_COMMANDLINE)
else:
logger.warning(_('Unknown configuration option: %s = %s'),
ucd(name), ucd(pkgs))
def _adjust_conf_options(self):
"""Adjust conf options interactions"""
skip_broken_val = self._get_value('skip_broken')
if skip_broken_val:
self._set_value('strict', not skip_broken_val, self._get_priority('skip_broken'))
@property
def releasever(self):
# :api
return self.substitutions.get('releasever')
@releasever.setter
def releasever(self, val):
# :api
if val is None:
self.substitutions.pop('releasever', None)
return
self.substitutions['releasever'] = str(val)
@property
def arch(self):
# :api
return self.substitutions.get('arch')
@arch.setter
def arch(self, val):
# :api
if val is None:
self.substitutions.pop('arch', None)
return
if val not in dnf.rpm._BASEARCH_MAP.keys():
msg = _('Incorrect or unknown "{}": {}')
raise dnf.exceptions.Error(msg.format("arch", val))
self.substitutions['arch'] = val
self.basearch = dnf.rpm.basearch(val)
@property
def basearch(self):
# :api
return self.substitutions.get('basearch')
@basearch.setter
def basearch(self, val):
# :api
if val is None:
self.substitutions.pop('basearch', None)
return
if val not in dnf.rpm._BASEARCH_MAP.values():
msg = _('Incorrect or unknown "{}": {}')
raise dnf.exceptions.Error(msg.format("basearch", val))
self.substitutions['basearch'] = val
def read(self, filename=None, priority=PRIO_DEFAULT):
# :api
if filename is None:
filename = self._get_value('config_file_path')
parser = libdnf.conf.ConfigParser()
try:
parser.read(filename)
except RuntimeError as e:
raise dnf.exceptions.ConfigError(_('Parsing file "%s" failed: %s') % (filename, e))
except IOError as e:
logger.warning(e)
self._populate(parser, self._section, filename, priority)
# update to where we read the file from
self._set_value('config_file_path', filename, priority)
@property
def verbose(self):
return self._get_value('debuglevel') >= dnf.const.VERBOSE_LEVEL
class RepoConf(BaseConfig):
"""Option definitions for repository INI file sections."""
def __init__(self, parent, section=None, parser=None):
mainConfig = parent._config if parent else libdnf.conf.ConfigMain()
super(RepoConf, self).__init__(libdnf.conf.ConfigRepo(mainConfig), section, parser)
# Do not remove! Attribute is a reference holder.
# Prevents premature removal of the mainConfig. The libdnf ConfigRepo points to it.
self._mainConfigRefHolder = mainConfig
if section:
self._config.name().set(PRIO_DEFAULT, section)
def _configure_from_options(self, opts):
"""Configure repos from the opts. """
if getattr(opts, 'gpgcheck', None) is False:
for optname in ['gpgcheck', 'repo_gpgcheck']:
self._set_value(optname, False, dnf.conf.PRIO_COMMANDLINE)
repo_setopts = getattr(opts, 'repo_setopts', {})
for repoid, setopts in repo_setopts.items():
if not fnmatch.fnmatch(self._section, repoid):
continue
for name, values in setopts.items():
for val in values:
if hasattr(self._config, name):
try:
# values in repo_setopts are strings, try to parse it using newString()
self._config.optBinds().at(name).newString(PRIO_COMMANDLINE, val)
except RuntimeError as e:
raise dnf.exceptions.ConfigError(
_("Error parsing --setopt with key '%s.%s', value '%s': %s")
% (self._section, name, val, str(e)), raw_error=str(e))
else:
msg = _("Repo %s did not have a %s attr. before setopt")
logger.warning(msg, self._section, name)
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