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# 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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