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# -*- encoding: utf-8 -*-
# Software Management Providers
#
# Copyright (C) 2012-2013 Red Hat, Inc. All rights reserved.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
# Authors: Michal Minar <miminar@redhat.com>
#
"""Common utilities for LMI_Software* providers
"""
import platform
import re
import signal
RE_EVRA = re.compile(
r'^(?P<epoch>\d+):(?P<ver>[^-]+)-(?P<rel>.+)\.(?P<arch>[^.]+)$')
RE_NEVRA = re.compile(
r'^(?P<name>.+)-(?P<evra>(?P<epoch>\d+):(?P<ver>[^-]+)'
r'-(?P<rel>.+)\.(?P<arch>[^.]+))$')
RE_NEVRA_OPT_EPOCH = re.compile(
r'^(?P<name>.+)-(?P<evra>((?P<epoch>\d+):)?(?P<ver>[^-]+)'
r'-(?P<rel>.+)\.(?P<arch>[^.]+))$')
RE_ENVRA = re.compile(
r'^(?P<epoch>\d+):(?P<name>.+)-(?P<evra>(?P<ver>[^-]+)'
r'-(?P<rel>.+)\.(?P<arch>[^.]+))$')
def _get_distname():
"""
@return name of linux distribution
"""
if hasattr(platform, 'linux_distribution'):
return platform.linux_distribution(
full_distribution_name=False)[0].lower()
else:
return platform.dist()[0].lower()
def get_target_operating_system():
"""
@return (val, text).
Where val is a number from ValueMap of TargetOperatingSystem property
of CIM_SoftwareElement class and text is its testual representation.
"""
system = platform.system()
if system.lower() == 'linux':
try:
val, dist = \
{ 'redhat' : (79, 'RedHat Enterprise Linux')
, 'suse' : (81, 'SUSE')
, 'mandriva' : (88, 'Mandriva')
, 'ubuntu' : (93, 'Ubuntu')
, 'debian' : (95, 'Debian')
}[_get_distname()]
except KeyError:
linrel = platform.uname()[2]
if linrel.startswith('2.4'):
val, dist = (97, 'Linux 2.4.x')
elif linrel.startswith('2.6'):
val, dist = (99, 'Linux 2.6.x')
else:
return (36, 'LINUX') # no check for x86_64
if platform.machine() == 'x86_64':
val += 1
dist += ' 64-Bit'
return (val, dist)
elif system.lower() in ('macosx', 'darwin'):
return (2, 'MACOS')
# elif system.lower() == 'windows': # no general value
else:
return (0, 'Unknown')
def check_target_operating_system(system):
"""
@return if param system matches current target operating system
"""
if isinstance(system, basestring):
system = int(system)
if not isinstance(system, (int, long)):
raise TypeError("system must be either string or integer, not %s" %
system.__class__.__name__)
tos = get_target_operating_system()
if system == tos:
return True
if system == 36: # linux
if platform.system().lower() == "linux":
return True
if ( system >= 97 and system <= 100 # linux 2.x.x
and platform.uname()[2].startswith('2.4' if system < 99 else '2.6')
# check machine
and ( bool(platform.machine().endswith('64'))
== bool(not (system % 2)))):
return True
return False
def nevra2filter(nevra):
"""
Takes either regexp match object resulting from RE_NEVRA match or
a nevra string.
@return dictionary with package filter key-value pairs made from nevra
"""
if isinstance(nevra, basestring):
match = RE_NEVRA_OPT_EPOCH.match(nevra)
elif nevra.__class__.__name__.lower() == "sre_match":
match = nevra
else:
raise TypeError("nevra must be either string or regexp match object")
epoch = match.group("epoch")
if not epoch or match.group("epoch") == "(none)":
epoch = "0"
return { "name" : match.group("name")
, "epoch" : epoch
, "version" : match.group("ver")
, "release" : match.group("rel")
, "arch" : match.group("arch")
}
def make_nevra(name, epoch, ver, rel, arch, with_epoch='NOT_ZERO'):
"""
@param with_epoch may be one of:
"NOT_ZERO" - include epoch only if it's not zero
"ALWAYS" - include epoch always
"NEVER" - do not include epoch at all
"""
estr = ''
if with_epoch.lower() == "always":
estr = epoch
elif with_epoch.lower() == "not_zero":
if epoch != "0":
estr = epoch
if len(estr):
estr += ":"
return "%s-%s%s-%s.%s" % (name, estr, ver, rel, arch)
def pkg2nevra(pkg, with_epoch='NOT_ZERO'):
"""
@return nevra string made of pkg
"""
return make_nevra(pkg.name, pkg.epoch, pkg.version,
pkg.release, pkg.arch, with_epoch)
def get_signal_name(signal_num):
"""
@return name of signal for signal_num argument
"""
if not isinstance(signal_num, (int, long)):
raise TypeError("signal_num must be an integer")
try:
return dict((v, k) for k, v in signal.__dict__.items())[signal_num]
except KeyError:
return "UNKNOWN_SIGNAL(%d)" % signal_num
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