| Current Path : /proc/self/root/proc/3/task/3/cwd/usr/local/ssl/lib/python2.6/site-packages/yum/ |
| Current File : //proc/self/root/proc/3/task/3/cwd/usr/local/ssl/lib/python2.6/site-packages/yum/config.py |
#!/usr/bin/python -t
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Library 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# Copyright 2002 Duke University
"""
Configuration parser and default values for yum.
"""
_use_iniparse = True
import os
import sys
import warnings
import rpm
import copy
import urlparse
import shlex
from parser import ConfigPreProcessor, varReplace
try:
from iniparse import INIConfig
from iniparse.compat import NoSectionError, NoOptionError, ParsingError
from iniparse.compat import RawConfigParser as ConfigParser
except ImportError:
_use_iniparse = False
if not _use_iniparse:
from ConfigParser import NoSectionError, NoOptionError, ParsingError
from ConfigParser import ConfigParser
import rpmUtils.transaction
import Errors
import types
from misc import get_uuid, read_in_items_from_dot_dir
# Alter/patch these to change the default checking...
__pkgs_gpgcheck_default__ = False
__repo_gpgcheck_default__ = False
class Option(object):
'''
This class handles a single Yum configuration file option. Create
subclasses for each type of supported configuration option.
Python descriptor foo (__get__ and __set__) is used to make option
definition easy and consise.
'''
def __init__(self, default=None, parse_default=False):
self._setattrname()
self.inherit = False
if parse_default:
default = self.parse(default)
self.default = default
def _setattrname(self):
'''Calculate the internal attribute name used to store option state in
configuration instances.
'''
self._attrname = '__opt%d' % id(self)
def __get__(self, obj, objtype):
'''Called when the option is read (via the descriptor protocol).
@param obj: The configuration instance to modify.
@param objtype: The type of the config instance (not used).
@return: The parsed option value or the default value if the value
wasn't set in the configuration file.
'''
# xemacs highlighting hack: '
if obj is None:
return self
return getattr(obj, self._attrname, None)
def __set__(self, obj, value):
'''Called when the option is set (via the descriptor protocol).
@param obj: The configuration instance to modify.
@param value: The value to set the option to.
@return: Nothing.
'''
# Only try to parse if it's a string
if isinstance(value, basestring):
try:
value = self.parse(value)
except ValueError, e:
# Add the field name onto the error
raise ValueError('Error parsing "%s = %r": %s' % (self._optname,
value, str(e)))
setattr(obj, self._attrname, value)
def setup(self, obj, name):
'''Initialise the option for a config instance.
This must be called before the option can be set or retrieved.
@param obj: BaseConfig (or subclass) instance.
@param name: Name of the option.
'''
self._optname = name
setattr(obj, self._attrname, copy.copy(self.default))
def clone(self):
'''Return a safe copy of this Option instance
'''
new = copy.copy(self)
new._setattrname()
return new
def parse(self, s):
'''Parse the string value to the Option's native value.
@param s: Raw string value to parse.
@return: Validated native value.
Will raise ValueError if there was a problem parsing the string.
Subclasses should override this.
'''
return s
def tostring(self, value):
'''Convert the Option's native value to a string value.
@param value: Native option value.
@return: String representation of input.
This does the opposite of the parse() method above.
Subclasses should override this.
'''
return str(value)
def Inherit(option_obj):
'''Clone an Option instance for the purposes of inheritance. The returned
instance has all the same properties as the input Option and shares items
such as the default value. Use this to avoid redefinition of reused
options.
@param option_obj: Option instance to inherit.
@return: New Option instance inherited from the input.
'''
new_option = option_obj.clone()
new_option.inherit = True
return new_option
class ListOption(Option):
"""
An option containing a list of strings.
"""
def __init__(self, default=None, parse_default=False):
if default is None:
default = []
super(ListOption, self).__init__(default, parse_default)
def parse(self, s):
"""Converts a string from the config file to a workable list, parses
globdir: paths as foo.d-style dirs
Commas and spaces are used as separators for the list
"""
# we need to allow for the '\n[whitespace]' continuation - easier
# to sub the \n with a space and then read the lines
s = s.replace('\n', ' ')
s = s.replace(',', ' ')
results = []
for item in s.split():
if item.startswith('glob:'):
thisglob = item.replace('glob:', '')
results.extend(read_in_items_from_dot_dir(thisglob))
continue
results.append(item)
return results
def tostring(self, value):
return '\n '.join(value)
class UrlOption(Option):
'''
This option handles lists of URLs with validation of the URL scheme.
'''
def __init__(self, default=None, schemes=('http', 'ftp', 'file', 'https'),
allow_none=False):
super(UrlOption, self).__init__(default)
self.schemes = schemes
self.allow_none = allow_none
def parse(self, url):
url = url.strip()
# Handle the "_none_" special case
if url.lower() == '_none_':
if self.allow_none:
return '_none_'
else:
raise ValueError('"_none_" is not a valid value')
# Check that scheme is valid
(s,b,p,q,f,o) = urlparse.urlparse(url)
if s not in self.schemes:
raise ValueError('URL must be %s not "%s"' % (self._schemelist(), s))
return url
def _schemelist(self):
'''Return a user friendly list of the allowed schemes
'''
if len(self.schemes) < 1:
return 'empty'
elif len(self.schemes) == 1:
return self.schemes[0]
else:
return '%s or %s' % (', '.join(self.schemes[:-1]), self.schemes[-1])
class UrlListOption(ListOption):
'''
Option for handling lists of URLs with validation of the URL scheme.
'''
def __init__(self, default=None, schemes=('http', 'ftp', 'file', 'https'),
parse_default=False):
super(UrlListOption, self).__init__(default, parse_default)
# Hold a UrlOption instance to assist with parsing
self._urloption = UrlOption(schemes=schemes)
def parse(self, s):
out = []
s = s.replace('\n', ' ')
s = s.replace(',', ' ')
items = [ item.replace(' ', '%20') for item in shlex.split(s) ]
tmp = []
for item in items:
if item.startswith('glob:'):
thisglob = item.replace('glob:', '')
tmp.extend(read_in_items_from_dot_dir(thisglob))
continue
tmp.append(item)
for url in super(UrlListOption, self).parse(' '.join(tmp)):
out.append(self._urloption.parse(url))
return out
class IntOption(Option):
"""
An option representing an integer value.
"""
def __init__(self, default=None, range_min=None, range_max=None):
super(IntOption, self).__init__(default)
self._range_min = range_min
self._range_max = range_max
def parse(self, s):
try:
val = int(s)
except (ValueError, TypeError), e:
raise ValueError('invalid integer value')
if self._range_max is not None and val > self._range_max:
raise ValueError('out of range integer value')
if self._range_min is not None and val < self._range_min:
raise ValueError('out of range integer value')
return val
class PositiveIntOption(IntOption):
"""
An option representing a positive integer value, where 0 can have a special
represention.
"""
def __init__(self, default=None, range_min=0, range_max=None,
names_of_0=None):
super(PositiveIntOption, self).__init__(default, range_min, range_max)
self._names0 = names_of_0
def parse(self, s):
if s in self._names0:
return 0
return super(PositiveIntOption, self).parse(s)
class SecondsOption(Option):
"""
An option representing an integer value of seconds, or a human readable
variation specifying days, hours, minutes or seconds until something
happens. Works like BytesOption.
Note that due to historical president -1 means "never", so this accepts
that and allows the word never too.
Valid inputs: 100, 1.5m, 90s, 1.2d, 1d, 0xF, 0.1, -1, never
Invalid inputs: -10, -0.1, 45.6Z, 1d6h, 1day, 1y
Return value will always be an integer
"""
MULTS = {'d': 60 * 60 * 24, 'h' : 60 * 60, 'm' : 60, 's': 1}
def parse(self, s):
if len(s) < 1:
raise ValueError("no value specified")
if s == "-1" or s == "never": # Special cache timeout, meaning never
return -1
if s[-1].isalpha():
n = s[:-1]
unit = s[-1].lower()
mult = self.MULTS.get(unit, None)
if not mult:
raise ValueError("unknown unit '%s'" % unit)
else:
n = s
mult = 1
try:
n = float(n)
except (ValueError, TypeError), e:
raise ValueError('invalid value')
if n < 0:
raise ValueError("seconds value may not be negative")
return int(n * mult)
class BoolOption(Option):
"""
An option representing a boolean value.
The value can be one of 0, 1, yes, no, true, or false.
"""
def parse(self, s):
s = s.lower()
if s in ('0', 'no', 'false'):
return False
elif s in ('1', 'yes', 'true'):
return True
else:
raise ValueError('invalid boolean value')
def tostring(self, value):
if value:
return "1"
else:
return "0"
class FloatOption(Option):
"""
An option representing a numeric float value.
"""
def parse(self, s):
try:
return float(s.strip())
except (ValueError, TypeError):
raise ValueError('invalid float value')
class SelectionOption(Option):
'''Handles string values where only specific values are allowed
'''
def __init__(self, default=None, allowed=(), mapper={}):
super(SelectionOption, self).__init__(default)
self._allowed = allowed
self._mapper = mapper
def parse(self, s):
if s in self._mapper:
s = self._mapper[s]
if s not in self._allowed:
raise ValueError('"%s" is not an allowed value' % s)
return s
class CaselessSelectionOption(SelectionOption):
''' Mainly for compat. with BoolOption, works like SelectionOption but
lowers input case. '''
def parse(self, s):
return super(CaselessSelectionOption, self).parse(s.lower())
class BytesOption(Option):
"""
An option representing a value in bytes.
The value may be given in bytes, kilobytes, megabytes, or gigabytes.
"""
# Multipliers for unit symbols
MULTS = {
'k': 1024,
'm': 1024*1024,
'g': 1024*1024*1024,
}
def parse(self, s):
"""Parse a friendly bandwidth option to bytes
The input should be a string containing a (possibly floating point)
number followed by an optional single character unit. Valid units are
'k', 'M', 'G'. Case is ignored.
Valid inputs: 100, 123M, 45.6k, 12.4G, 100K, 786.3, 0
Invalid inputs: -10, -0.1, 45.6L, 123Mb
Return value will always be an integer
1k = 1024 bytes.
ValueError will be raised if the option couldn't be parsed.
"""
if len(s) < 1:
raise ValueError("no value specified")
if s[-1].isalpha():
n = s[:-1]
unit = s[-1].lower()
mult = self.MULTS.get(unit, None)
if not mult:
raise ValueError("unknown unit '%s'" % unit)
else:
n = s
mult = 1
try:
n = float(n)
except ValueError:
raise ValueError("couldn't convert '%s' to number" % n)
if n < 0:
raise ValueError("bytes value may not be negative")
return int(n * mult)
class ThrottleOption(BytesOption):
"""
An option representing a bandwidth throttle value. See
ThrottleOption.parse for acceptable input values.
"""
def parse(self, s):
"""Get a throttle option.
Input may either be a percentage or a "friendly bandwidth value" as
accepted by the BytesOption.
Valid inputs: 100, 50%, 80.5%, 123M, 45.6k, 12.4G, 100K, 786.0, 0
Invalid inputs: 100.1%, -4%, -500
Return value will be a int if a bandwidth value was specified or a
float if a percentage was given.
ValueError will be raised if input couldn't be parsed.
"""
if len(s) < 1:
raise ValueError("no value specified")
if s[-1] == '%':
n = s[:-1]
try:
n = float(n)
except ValueError:
raise ValueError("couldn't convert '%s' to number" % n)
if n < 0 or n > 100:
raise ValueError("percentage is out of range")
return n / 100.0
else:
return BytesOption.parse(self, s)
class BaseConfig(object):
'''
Base class for storing configuration definitions. Subclass when creating
your own definitons.
'''
def __init__(self):
self._section = None
for name in self.iterkeys():
option = self.optionobj(name)
option.setup(self, name)
def __str__(self):
out = []
out.append('[%s]' % self._section)
for name, value in self.iteritems():
out.append('%s: %r' % (name, value))
return '\n'.join(out)
def populate(self, parser, section, parent=None):
'''Set option values from a INI file section.
@param parser: ConfParser instance (or subclass)
@param section: INI file section to read use.
@param parent: Optional parent BaseConfig (or subclass) instance to use
when doing option value inheritance.
'''
self.cfg = parser
self._section = section
if parser.has_section(section):
opts = set(parser.options(section))
else:
opts = set()
for name in self.iterkeys():
option = self.optionobj(name)
value = None
if name in opts:
value = parser.get(section, name)
else:
# No matching option in this section, try inheriting
if parent and option.inherit:
value = getattr(parent, name)
if value is not None:
setattr(self, name, value)
def optionobj(cls, name, exceptions=True):
'''Return the Option instance for the given name
'''
obj = getattr(cls, name, None)
if isinstance(obj, Option):
return obj
elif exceptions:
raise KeyError
else:
return None
optionobj = classmethod(optionobj)
def isoption(cls, name):
'''Return True if the given name refers to a defined option
'''
return cls.optionobj(name, exceptions=False) is not None
isoption = classmethod(isoption)
def iterkeys(self):
'''Yield the names of all defined options in the instance.
'''
for name in dir(self):
if self.isoption(name):
yield name
def iteritems(self):
'''Yield (name, value) pairs for every option in the instance.
The value returned is the parsed, validated option value.
'''
# Use dir() so that we see inherited options too
for name in self.iterkeys():
yield (name, getattr(self, name))
def write(self, fileobj, section=None, always=()):
'''Write out the configuration to a file-like object
@param fileobj: File-like object to write to
@param section: Section name to use. If not-specified the section name
used during parsing will be used.
@param always: A sequence of option names to always write out.
Options not listed here will only be written out if they are at
non-default values. Set to None to dump out all options.
'''
# Write section heading
if section is None:
if self._section is None:
raise ValueError("not populated, don't know section")
section = self._section
# Updated the ConfigParser with the changed values
cfgOptions = self.cfg.options(section)
for name,value in self.iteritems():
option = self.optionobj(name)
if always is None or name in always or option.default != value or name in cfgOptions :
self.cfg.set(section,name, option.tostring(value))
# write the updated ConfigParser to the fileobj.
self.cfg.write(fileobj)
def getConfigOption(self, option, default=None):
warnings.warn('getConfigOption() will go away in a future version of Yum.\n'
'Please access option values as attributes or using getattr().',
DeprecationWarning)
if hasattr(self, option):
return getattr(self, option)
return default
def setConfigOption(self, option, value):
warnings.warn('setConfigOption() will go away in a future version of Yum.\n'
'Please set option values as attributes or using setattr().',
DeprecationWarning)
if hasattr(self, option):
setattr(self, option, value)
else:
raise Errors.ConfigError, 'No such option %s' % option
class StartupConf(BaseConfig):
'''
Configuration option definitions for yum.conf's [main] section that are
required early in the initialisation process or before the other [main]
options can be parsed.
'''
# xemacs highlighting hack: '
debuglevel = IntOption(2, 0, 10)
errorlevel = IntOption(2, 0, 10)
distroverpkg = Option('redhat-release')
installroot = Option('/')
config_file_path = Option('/etc/yum/yum.conf')
plugins = BoolOption(False)
pluginpath = ListOption(['/usr/share/yum-plugins', '/usr/lib/yum-plugins'])
pluginconfpath = ListOption(['/etc/yum/pluginconf.d'])
gaftonmode = BoolOption(False)
syslog_ident = Option()
syslog_facility = Option('LOG_USER')
syslog_device = Option('/dev/log')
persistdir = Option('/var/lib/yum')
class YumConf(StartupConf):
'''
Configuration option definitions for yum.conf\'s [main] section.
Note: see also options inherited from StartupConf
'''
retries = PositiveIntOption(10, names_of_0=["<forever>"])
recent = IntOption(7, range_min=0)
reset_nice = BoolOption(True)
cachedir = Option('/var/cache/yum')
keepcache = BoolOption(True)
logfile = Option('/var/log/yum.log')
reposdir = ListOption(['/etc/yum/repos.d', '/etc/yum.repos.d'])
commands = ListOption()
exclude = ListOption()
failovermethod = Option('priority')
proxy = UrlOption(default=False, schemes=('http', 'ftp', 'https'), allow_none=True)
proxy_username = Option()
proxy_password = Option()
username = Option()
password = Option()
installonlypkgs = ListOption(['kernel', 'kernel-bigmem',
'installonlypkg(kernel-module)',
'installonlypkg(vm)',
'kernel-enterprise','kernel-smp', 'kernel-debug',
'kernel-unsupported', 'kernel-source', 'kernel-devel', 'kernel-PAE',
'kernel-PAE-debug'])
# NOTE: If you set this to 2, then because it keeps the current kernel it
# means if you ever install an "old" kernel it'll get rid of the newest one
# so you probably want to use 3 as a minimum ... if you turn it on.
installonly_limit = PositiveIntOption(3, range_min=2,
names_of_0=["0", "<off>"])
kernelpkgnames = ListOption(['kernel','kernel-smp', 'kernel-enterprise',
'kernel-bigmem', 'kernel-BOOT', 'kernel-PAE', 'kernel-PAE-debug'])
exactarchlist = ListOption([])
tsflags = ListOption()
assumeyes = BoolOption(False)
assumeno = BoolOption(False)
alwaysprompt = BoolOption(True)
exactarch = BoolOption(True)
tolerant = BoolOption(True)
diskspacecheck = BoolOption(True)
overwrite_groups = BoolOption(False)
keepalive = BoolOption(True)
# FIXME: rename gpgcheck to pkgs_gpgcheck
gpgcheck = BoolOption(__pkgs_gpgcheck_default__)
repo_gpgcheck = BoolOption(__repo_gpgcheck_default__)
localpkg_gpgcheck = BoolOption(__pkgs_gpgcheck_default__)
obsoletes = BoolOption(True)
showdupesfromrepos = BoolOption(False)
enabled = BoolOption(True)
enablegroups = BoolOption(True)
enable_group_conditionals = BoolOption(True)
groupremove_leaf_only = BoolOption(False)
group_package_types = ListOption(['mandatory', 'default'])
timeout = FloatOption(30.0) # FIXME: Should use variation of SecondsOption
bandwidth = BytesOption(0)
throttle = ThrottleOption(0)
ftp_disable_epsv = BoolOption(False)
http_caching = SelectionOption('all', ('none', 'packages', 'all'))
metadata_expire = SecondsOption(60 * 60 * 6) # Time in seconds (6h).
# Time in seconds (1 day). NOTE: This isn't used when using metalinks
mirrorlist_expire = SecondsOption(60 * 60 * 24)
rpm_check_debug = BoolOption(True)
disable_excludes = ListOption()
query_install_excludes = BoolOption(False)
skip_broken = BoolOption(False)
# Note that "instant" is the old behaviour, but group:primary is very
# similar but better :).
mdpolicy = ListOption(['group:primary'])
# ('instant', 'group:all', 'group:main', 'group:small', 'group:primary'))
multilib_policy = SelectionOption('best',('best', 'all'))
# all == install any/all arches you can
# best == use the 'best arch' for the system
bugtracker_url = Option('https://bugzilla.redhat.com/enter_bug.cgi?product=Red%20Hat%20Enterprise%20Linux%206&component=yum')
color = SelectionOption('auto', ('auto', 'never', 'always'),
mapper={'on' : 'always', 'yes' : 'always',
'1' : 'always', 'true' : 'always',
'off' : 'never', 'no' : 'never',
'0' : 'never', 'false' : 'never',
'tty' : 'auto', 'if-tty' : 'auto'})
color_list_installed_older = Option('bold')
color_list_installed_newer = Option('bold,yellow')
color_list_installed_reinstall = Option('normal')
color_list_installed_extra = Option('bold,red')
color_list_available_upgrade = Option('bold,blue')
color_list_available_downgrade = Option('dim,cyan')
color_list_available_reinstall = Option('bold,underline,green')
color_list_available_install = Option('normal')
color_update_installed = Option('normal')
color_update_local = Option('bold')
color_update_remote = Option('normal')
color_search_match = Option('bold')
sslcacert = Option()
sslverify = BoolOption(True)
sslclientcert = Option()
sslclientkey = Option()
ssl_check_cert_permissions = BoolOption(True)
history_record = BoolOption(True)
history_record_packages = ListOption(['yum', 'rpm'])
rpmverbosity = Option('info')
protected_packages = ListOption("yum, glob:/etc/yum/protected.d/*.conf",
parse_default=True)
protected_multilib = BoolOption(True)
exit_on_lock = BoolOption(False)
loadts_ignoremissing = BoolOption(False)
loadts_ignorerpm = BoolOption(False)
clean_requirements_on_remove = BoolOption(False)
history_list_view = SelectionOption('users',
('single-user-commands', 'users',
'commands'),
mapper={'cmds' : 'commands',
'default' :'users'})
depsolve_loop_limit = PositiveIntOption(100, names_of_0=["<forever>"])
recheck_installed_requires = BoolOption(False)
_reposlist = []
def dump(self):
output = '[main]\n'
# we exclude all vars which start with _ or are in this list:
excluded_vars = ('cfg', 'uid', 'yumvar', 'progress_obj', 'failure_obj',
'disable_excludes', 'config_file_age', 'config_file_path',
)
for attr in dir(self):
if attr.startswith('_'):
continue
if attr in excluded_vars:
continue
if isinstance(getattr(self, attr), types.MethodType):
continue
res = getattr(self, attr)
if not res and type(res) not in (type(False), type(0)):
res = ''
if type(res) == types.ListType:
res = ',\n '.join(res)
output = output + '%s = %s\n' % (attr, res)
return output
class RepoConf(BaseConfig):
'''
Option definitions for repository INI file sections.
'''
__cached_keys = set()
def iterkeys(self):
'''Yield the names of all defined options in the instance.
'''
ck = self.__cached_keys
if not isinstance(self, RepoConf):
ck = set()
if not ck:
ck.update(list(BaseConfig.iterkeys(self)))
for name in self.__cached_keys:
yield name
name = Option()
enabled = Inherit(YumConf.enabled)
baseurl = UrlListOption()
mirrorlist = UrlOption()
metalink = UrlOption()
mediaid = Option()
gpgkey = UrlListOption()
gpgcakey = UrlListOption()
exclude = ListOption()
includepkgs = ListOption()
proxy = Inherit(YumConf.proxy)
proxy_username = Inherit(YumConf.proxy_username)
proxy_password = Inherit(YumConf.proxy_password)
retries = Inherit(YumConf.retries)
failovermethod = Inherit(YumConf.failovermethod)
username = Inherit(YumConf.username)
password = Inherit(YumConf.password)
# FIXME: rename gpgcheck to pkgs_gpgcheck
gpgcheck = Inherit(YumConf.gpgcheck)
repo_gpgcheck = Inherit(YumConf.repo_gpgcheck)
keepalive = Inherit(YumConf.keepalive)
enablegroups = Inherit(YumConf.enablegroups)
bandwidth = Inherit(YumConf.bandwidth)
throttle = Inherit(YumConf.throttle)
timeout = Inherit(YumConf.timeout)
http_caching = Inherit(YumConf.http_caching)
metadata_expire = Inherit(YumConf.metadata_expire)
mirrorlist_expire = Inherit(YumConf.mirrorlist_expire)
# NOTE: metalink expire _must_ be the same as metadata_expire, due to the
# checksumming of the repomd.xml.
mdpolicy = Inherit(YumConf.mdpolicy)
cost = IntOption(1000)
ftp_disable_epsv = Inherit(YumConf.ftp_disable_epsv)
sslcacert = Inherit(YumConf.sslcacert)
sslverify = Inherit(YumConf.sslverify)
sslclientcert = Inherit(YumConf.sslclientcert)
sslclientkey = Inherit(YumConf.sslclientkey)
ssl_check_cert_permissions = Inherit(YumConf.ssl_check_cert_permissions)
skip_if_unavailable = BoolOption(False)
class VersionGroupConf(BaseConfig):
pkglist = ListOption()
run_with_packages = BoolOption(False)
def readStartupConfig(configfile, root):
'''
Parse Yum's main configuration file and return a StartupConf instance.
This is required in order to access configuration settings required as Yum
starts up.
@param configfile: The path to yum.conf.
@param root: The base path to use for installation (typically '/')
@return: A StartupConf instance.
May raise Errors.ConfigError if a problem is detected with while parsing.
'''
# ' xemacs syntax hack
StartupConf.installroot.default = root
startupconf = StartupConf()
startupconf.config_file_path = configfile
parser = ConfigParser()
confpp_obj = ConfigPreProcessor(configfile)
yumvars = _getEnvVar()
confpp_obj._vars = yumvars
startupconf.yumvars = yumvars
try:
parser.readfp(confpp_obj)
except ParsingError, e:
raise Errors.ConfigError("Parsing file failed: %s" % e)
startupconf.populate(parser, 'main')
# Check that plugin paths are all absolute
for path in startupconf.pluginpath:
if not path[0] == '/':
raise Errors.ConfigError("All plugin search paths must be absolute")
# Stuff this here to avoid later re-parsing
startupconf._parser = parser
# setup the release ver here
startupconf.releasever = _getsysver(startupconf.installroot, startupconf.distroverpkg)
uuidfile = '%s/%s/uuid' % (startupconf.installroot, startupconf.persistdir)
startupconf.uuid = get_uuid(uuidfile)
return startupconf
def readMainConfig(startupconf):
'''
Parse Yum's main configuration file
@param startupconf: StartupConf instance as returned by readStartupConfig()
@return: Populated YumConf instance.
'''
# ' xemacs syntax hack
# Set up substitution vars
yumvars = startupconf.yumvars
yumvars['basearch'] = startupconf.basearch
yumvars['arch'] = startupconf.arch
yumvars['releasever'] = startupconf.releasever
yumvars['uuid'] = startupconf.uuid
# Note: We don't setup the FS yumvars here, because we want to be able to
# use the core yumvars in persistdir. Which is the base of FS yumvars.
# Read [main] section
yumconf = YumConf()
yumconf.populate(startupconf._parser, 'main')
# Apply the installroot to directory options
def _apply_installroot(yumconf, option):
path = getattr(yumconf, option)
ir_path = yumconf.installroot + path
ir_path = ir_path.replace('//', '/') # os.path.normpath won't fix this and
# it annoys me
ir_path = varReplace(ir_path, yumvars)
setattr(yumconf, option, ir_path)
# Read the FS yumvars
try:
dir_fsvars = yumconf.installroot + "/etc/yum/vars/"
fsvars = os.listdir(dir_fsvars)
except OSError:
fsvars = []
for fsvar in fsvars:
if os.path.islink(dir_fsvars + fsvar):
continue
try:
val = open(dir_fsvars + fsvar).readline()
if val and val[-1] == '\n':
val = val[:-1]
except (OSError, IOError):
continue
yumvars[fsvar] = val
# These can use the above FS yumvars
for option in ('cachedir', 'logfile', 'persistdir'):
_apply_installroot(yumconf, option)
# Add in some extra attributes which aren't actually configuration values
yumconf.yumvar = yumvars
yumconf.uid = 0
yumconf.cache = 0
yumconf.progess_obj = None
# items related to the originating config file
yumconf.config_file_path = startupconf.config_file_path
if os.path.exists(startupconf.config_file_path):
yumconf.config_file_age = os.stat(startupconf.config_file_path)[8]
else:
yumconf.config_file_age = 0
# propagate the debuglevel and errorlevel values:
yumconf.debuglevel = startupconf.debuglevel
yumconf.errorlevel = startupconf.errorlevel
return yumconf
def readVersionGroupsConfig(configfile="/etc/yum/version-groups.conf"):
parser = ConfigParser()
confpp_obj = ConfigPreProcessor(configfile)
try:
parser.readfp(confpp_obj)
except ParsingError, e:
raise Errors.ConfigError("Parsing file failed: %s" % e)
ret = {}
for section in parser.sections():
ret[section] = VersionGroupConf()
ret[section].populate(parser, section)
return ret
def getOption(conf, section, name, option):
'''Convenience function to retrieve a parsed and converted value from a
ConfigParser.
@param conf: ConfigParser instance or similar
@param section: Section name
@param name: Option name
@param option: Option instance to use for conversion.
@return: The parsed value or default if value was not present.
Will raise ValueError if the option could not be parsed.
'''
try:
val = conf.get(section, name)
except (NoSectionError, NoOptionError):
return option.default
return option.parse(val)
def _getEnvVar():
'''Return variable replacements from the environment variables YUM0 to YUM9
The result is intended to be used with parser.varReplace()
'''
yumvar = {}
for num in range(0, 10):
env = 'YUM%d' % num
val = os.environ.get(env, '')
if val:
yumvar[env.lower()] = val
return yumvar
def _getsysver(installroot, distroverpkg):
'''Calculate the release version for the system.
@param installroot: The value of the installroot option.
@param distroverpkg: The value of the distroverpkg option.
@return: The release version as a string (eg. '4' for FC4)
'''
ts = rpmUtils.transaction.initReadOnlyTransaction(root=installroot)
ts.pushVSFlags(~(rpm._RPMVSF_NOSIGNATURES|rpm._RPMVSF_NODIGESTS))
try:
idx = ts.dbMatch('provides', distroverpkg)
except TypeError, e:
# This is code for "cannot open rpmdb"
# this is for pep 352 compliance on python 2.6 and above :(
if sys.hexversion < 0x02050000:
if hasattr(e,'message'):
raise Errors.YumBaseError("Error: " + str(e.message))
else:
raise Errors.YumBaseError("Error: " + str(e))
raise Errors.YumBaseError("Error: " + str(e))
except rpm.error, e:
# This is the "new" code for "cannot open rpmdb", 4.8.0 ish
raise Errors.YumBaseError("Error: " + str(e))
# we're going to take the first one - if there is more than one of these
# then the user needs a beating
if idx.count() == 0:
releasever = '$releasever'
else:
hdr = idx.next()
releasever = hdr['version']
del hdr
del idx
del ts
return releasever
def writeRawRepoFile(repo,only=None):
"""
Writes changes in a repo object back to a .repo file.
@param repo: Repo Object
@param only: List of attributes to work on (None = All)
It work by reading the repo file, changes the values there shall be changed and write it back to disk.
"""
if not _use_iniparse:
return
ini = INIConfig(open(repo.repofile))
# b/c repoids can have $values in them we need to map both ways to figure
# out which one is which
section_id = repo.id
if repo.id not in ini._sections:
for sect in ini._sections.keys():
if varReplace(sect, repo.yumvar) == repo.id:
section_id = sect
# Updated the ConfigParser with the changed values
cfgOptions = repo.cfg.options(repo.id)
for name,value in repo.iteritems():
option = repo.optionobj(name)
if option.default != value or name in cfgOptions :
if only == None or name in only:
ini[section_id][name] = option.tostring(value)
fp =file(repo.repofile,"w")
fp.write(str(ini))
fp.close()
#def main():
# mainconf = readMainConfig(readStartupConfig('/etc/yum/yum.conf', '/'))
# print mainconf.cachedir
#
#if __name__ == '__main__':
# main()
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