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"""Handles differences between different distributions
Authors: Dave Malcolm <dmalcolm@redhat.com>, Zack Cerza <zcerza@redhat.com>"""
__author__ = "Dave Malcolm <dmalcolm@redhat.com>, Zack Cerza <zcerza@redhat.com>"
import os
import re
from version import Version
from logging import debugLogger as logger
class DistributionNotSupportedError(Exception): # pragma: no cover
"""
This distribution is not supported.
"""
PATCH_MESSAGE = "Please send patches to dogtail-devel-list@gnome.org"
def __init__(self, distro):
self.distro = distro
def __str__(self):
return self.distro + ". " + DistributionNotSupportedError.PATCH_MESSAGE
class PackageNotFoundError(Exception):
"""
Error finding the requested package.
"""
pass
global packageDb
global distro
class PackageDb(object):
"""
Class to abstract the details of whatever software package database is in
use (RPM, APT, etc)
"""
def __init__(self):
self.prefix = '/usr'
self.localePrefixes = [self.prefix + '/share/locale']
def getVersion(self, packageName):
"""
Method to get the version of an installed package as a Version
instance (or raise an exception if not found)
Note: does not know about distributions' internal revision numbers.
"""
raise NotImplementedError
def getFiles(self, packageName):
"""
Method to get a list of filenames owned by the package, or raise an
exception if not found.
"""
raise NotImplementedError
def getMoFiles(self, locale=None):
"""
Method to get a list of all .mo files on the system, optionally for a
specific locale.
"""
moFiles = {}
def appendIfMoFile(moFiles, dirName, fNames):
import re
for fName in fNames:
if re.match('(.*)\\.mo', fName):
moFiles[dirName + '/' + fName] = None
for localePrefix in self.localePrefixes:
if locale:
localePrefix = localePrefix + '/' + locale
os.path.walk(localePrefix, appendIfMoFile, moFiles)
return moFiles.keys()
def getDependencies(self, packageName):
"""
Method to get a list of unique package names that this package
is dependent on, or raise an exception if the package is not
found.
"""
raise NotImplementedError
class _RpmPackageDb(PackageDb): # pragma: no cover
def __init__(self):
PackageDb.__init__(self)
def getVersion(self, packageName):
import rpm
ts = rpm.TransactionSet()
for header in ts.dbMatch("name", packageName):
return Version.fromString(header["version"])
raise PackageNotFoundError(packageName)
def getFiles(self, packageName):
import rpm
ts = rpm.TransactionSet()
for header in ts.dbMatch("name", packageName):
return header["filenames"]
raise PackageNotFoundError(packageName)
def getDependencies(self, packageName):
import rpm
ts = rpm.TransactionSet()
for header in ts.dbMatch("name", packageName):
# Simulate a set using a hash (to a dummy value);
# sets were only added in Python 2.4
result = {}
# Get the list of requirements; these are
# sometimes package names, but can also be
# so-names of libraries, and invented virtual
# ids
for requirement in header[rpm.RPMTAG_REQUIRES]:
# Get the name of the package providing
# this requirement:
for depPackageHeader in ts.dbMatch("provides", requirement):
depName = depPackageHeader['name']
if depName != packageName:
# Add to the Hash with a dummy value
result[depName] = None
return result.keys()
raise PackageNotFoundError(packageName)
class _AptPackageDb(PackageDb):
def __init__(self):
PackageDb.__init__(self)
self.cache = None
def getVersion(self, packageName):
if not self.cache:
import apt_pkg
apt_pkg.init()
self.cache = apt_pkg.GetCache()
packages = self.cache.Packages
for package in packages:
if package.Name == packageName:
verString = re.match(
'.*Ver:\'(.*)-.*\' Section:', str(package.CurrentVer)).group(1)
return Version.fromString(verString)
raise PackageNotFoundError(packageName)
def getFiles(self, packageName):
files = []
list = os.popen('dpkg -L %s' % packageName).readlines()
if not list:
raise PackageNotFoundError(packageName)
else:
for line in list:
file = line.strip()
if file:
files.append(file)
return files
def getDependencies(self, packageName):
# Simulate a set using a hash (to a dummy value);
# sets were only added in Python 2.4
result = {}
if not self.cache:
import apt_pkg
apt_pkg.init()
self.cache = apt_pkg.GetCache()
packages = self.cache.Packages
for package in packages:
if package.Name == packageName:
current = package.CurrentVer
if not current:
raise PackageNotFoundError(packageName)
depends = current.DependsList
list = depends['Depends']
for dependency in list:
name = dependency[0].TargetPkg.Name
# Add to the hash using a dummy value
result[name] = None
return result.keys()
class _UbuntuAptPackageDb(_AptPackageDb):
def __init__(self):
_AptPackageDb.__init__(self)
self.localePrefixes.append(self.prefix + '/share/locale-langpack')
class _PortagePackageDb(PackageDb): # pragma: no cover
def __init__(self):
PackageDb.__init__(self)
def getVersion(self, packageName):
# the portage utilities are almost always going to be in
# /usr/lib/portage/pym
import sys
sys.path.append('/usr/lib/portage/pym')
import portage
# FIXME: this takes the first package returned in the list, in the
# case that there are slotted packages, and removes the leading
# category such as 'sys-apps'
gentooPackageName = portage.db["/"][
"vartree"].dbapi.match(packageName)[0].split('/')[1]
# this removes the distribution specific versioning returning only the
# upstream version
upstreamVersion = portage.pkgsplit(gentooPackageName)[1]
# print "Version of package is: " + upstreamVersion
return Version.fromString(upstreamVersion)
class _ConaryPackageDb(PackageDb): # pragma: no cover
def __init__(self):
PackageDb.__init__(self)
def getVersion(self, packageName):
from conaryclient import ConaryClient
client = ConaryClient()
dbVersions = client.db.getTroveVersionList(packageName)
if not len(dbVersions):
raise PackageNotFoundError(packageName)
return dbVersions[0].trailingRevision().asString().split("-")[0]
# getVersion not implemented because on Solaris multiple modules are installed
# in single packages, so it is hard to tell what version number of a specific
# module.
class _SolarisPackageDb(PackageDb): # pragma: no cover
def __init__(self):
PackageDb.__init__(self)
class JhBuildPackageDb(PackageDb): # pragma: no cover
def __init__(self):
PackageDb.__init__(self)
prefixes = []
prefixes.append(os.environ['LD_LIBRARY_PATH'])
prefixes.append(os.environ['XDG_CONFIG_DIRS'])
prefixes.append(os.environ['PKG_CONFIG_PATH'])
self.prefix = os.path.commonprefix(prefixes)
self.localePrefixes.append(self.prefix + '/share/locale')
def getDependencies(self, packageName):
result = {}
lines = os.popen('jhbuild list ' + packageName).readlines()
for line in lines:
if line:
result[line.strip()] = None
return result.keys()
class Distro(object):
"""
Class representing a distribution.
Scripts may want to do arbitrary logic based on whichever distro is in use
(e.g. handling differences in names of packages, distribution-specific
patches, etc.)
We can either create methods in the Distro class to handle these, or we
can use constructs like isinstance(distro, Ubuntu) to handle this. We can
even create hierarchies of distro subclasses to handle this kind of thing
(could get messy fast though)
"""
class Fedora(Distro): # pragma: no cover
def __init__(self):
self.packageDb = _RpmPackageDb()
class RHEL(Fedora): # pragma: no cover
pass
class Debian(Distro): # pragma: no cover
def __init__(self):
self.packageDb = _AptPackageDb()
class Ubuntu(Debian):
def __init__(self):
self.packageDb = _UbuntuAptPackageDb()
class Suse(Distro): # pragma: no cover
def __init__(self):
self.packageDb = _RpmPackageDb()
class Gentoo(Distro): # pragma: no cover
def __init__(self):
self.packageDb = _PortagePackageDb()
class Conary(Distro): # pragma: no cover
def __init__(self):
self.packageDb = _ConaryPackageDb()
class Solaris(Distro): # pragma: no cover
def __init__(self):
self.packageDb = _SolarisPackageDb()
class JHBuild(Distro): # pragma: no cover
def __init__(self):
self.packageDb = JhBuildPackageDb()
def detectDistro():
logger.log("Detecting distribution:", newline=False)
if os.environ.get("CERTIFIED_GNOMIE", "no") == "yes":
distro = JHBuild() # pragma: no cover
elif os.path.exists("/etc/SuSE-release"):
distro = Suse() # pragma: no cover
elif os.path.exists("/etc/fedora-release"):
distro = Fedora() # pragma: no cover
elif os.path.exists("/etc/redhat-release"):
distro = RHEL() # pragma: no cover
elif os.path.exists("/usr/share/doc/ubuntu-minimal"):
distro = Ubuntu()
elif os.path.exists("/etc/debian_version"): # pragma: no cover
distro = Debian() # pragma: no cover
elif os.path.exists("/etc/gentoo-release"): # pragma: no cover
distro = Gentoo() # pragma: no cover
elif os.path.exists("/etc/slackware-version"): # pragma: no cover
raise DistributionNotSupportedError("Slackware") # pragma: no cover
elif os.path.exists("/var/lib/conarydb/conarydb"): # pragma: no cover
distro = Conary() # pragma: no cover
elif os.path.exists("/etc/release") and \
re.match(".*Solaris", open("/etc/release").readline()): # pragma: no cover
distro = Solaris() # pragma: no cover
else:
raise DistributionNotSupportedError("Unknown") # pragma: no cover
logger.log(distro.__class__.__name__)
return distro
distro = detectDistro()
packageDb = distro.packageDb
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