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"""This is the Bcfg2 support for apt-get."""
# suppress apt API warnings
import warnings
warnings.filterwarnings("ignore", "apt API not stable yet",
FutureWarning)
import apt.cache
import os
import sys
import Bcfg2.Client.Tools
class APT(Bcfg2.Client.Tools.Tool):
"""The Debian toolset implements package and service operations and
inherits the rest from Toolset.Toolset.
"""
name = 'APT'
__execs__ = []
__handles__ = [('Package', 'deb'), ('Path', 'ignore')]
__req__ = {'Package': ['name', 'version'], 'Path': ['type']}
def __init__(self, logger, setup, config):
Bcfg2.Client.Tools.Tool.__init__(self, logger, setup, config)
self.install_path = setup.get('apt_install_path', '/usr')
self.var_path = setup.get('apt_var_path', '/var')
self.etc_path = setup.get('apt_etc_path', '/etc')
self.debsums = '%s/bin/debsums' % self.install_path
self.aptget = '%s/bin/apt-get' % self.install_path
self.dpkg = '%s/bin/dpkg' % self.install_path
self.__execs__ = [self.debsums, self.aptget, self.dpkg]
path_entries = os.environ['PATH'].split(':')
for reqdir in ['/sbin', '/usr/sbin']:
if reqdir not in path_entries:
os.environ['PATH'] = os.environ['PATH'] + ':' + reqdir
self.pkgcmd = '%s ' % self.aptget + \
'-o DPkg::Options::=--force-confold ' + \
'-o DPkg::Options::=--force-confmiss ' + \
'--reinstall ' + \
'--force-yes '
if not self.setup['debug']:
self.pkgcmd += '-q=2 '
self.pkgcmd += '-y install %s'
self.ignores = [entry.get('name') for struct in config
for entry in struct
if entry.tag == 'Path' and
entry.get('type') == 'ignore']
self.__important__ = self.__important__ + \
["%s/cache/debconf/config.dat" % self.var_path,
"%s/cache/debconf/templates.dat" % self.var_path,
'/etc/passwd', '/etc/group',
'%s/apt/apt.conf' % self.etc_path,
'%s/dpkg/dpkg.cfg' % self.etc_path] + \
[entry.get('name') for struct in config for entry in struct
if entry.tag == 'Path' and
entry.get('name').startswith(
'%s/apt/sources.list' % self.etc_path)]
self.nonexistent = [entry.get('name') for struct in config
for entry in struct
if entry.tag == 'Path' and
entry.get('type') == 'nonexistent']
os.environ["DEBIAN_FRONTEND"] = 'noninteractive'
self.actions = {}
if self.setup['kevlar'] and not self.setup['dryrun']:
self.cmd.run("%s --force-confold --configure --pending" %
self.dpkg)
self.cmd.run("%s clean" % self.aptget)
try:
self.pkg_cache = apt.cache.Cache()
except SystemError:
err = sys.exc_info()[1]
self.logger.info("Failed to initialize APT cache: %s" % err)
raise Bcfg2.Client.Tools.ToolInstantiationError
try:
self.pkg_cache.update()
except apt.cache.FetchFailedException:
err = sys.exc_info()[1]
self.logger.info("Failed to update APT cache: %s" % err)
self.pkg_cache = apt.cache.Cache()
if 'req_reinstall_pkgs' in dir(self.pkg_cache):
self._newapi = True
else:
self._newapi = False
def FindExtra(self):
"""Find extra packages."""
packages = [entry.get('name') for entry in self.getSupportedEntries()]
if self._newapi:
extras = [(p.name, p.installed.version) for p in self.pkg_cache
if p.is_installed and p.name not in packages]
else:
extras = [(p.name, p.installedVersion) for p in self.pkg_cache
if p.isInstalled and p.name not in packages]
return [Bcfg2.Client.XML.Element('Package', name=name,
type='deb', version=version)
for (name, version) in extras]
def VerifyDebsums(self, entry, modlist):
"""Verify the package contents with debsum information."""
output = \
self.cmd.run("%s -as %s" %
(self.debsums, entry.get('name'))).stderr.splitlines()
if len(output) == 1 and "no md5sums for" in output[0]:
self.logger.info("Package %s has no md5sums. Cannot verify" %
entry.get('name'))
entry.set('qtext',
"Reinstall Package %s-%s to setup md5sums? (y/N) " %
(entry.get('name'), entry.get('version')))
return False
files = []
for item in output:
if "checksum mismatch" in item:
files.append(item.split()[-1])
elif "changed file" in item:
files.append(item.split()[3])
elif "can't open" in item:
if item.split()[5] not in self.nonexistent:
files.append(item.split()[5])
elif "missing file" in item and \
item.split()[3] in self.nonexistent:
# these files should not exist
continue
elif "is not installed" in item or "missing file" in item:
self.logger.error("Package %s is not fully installed"
% entry.get('name'))
else:
self.logger.error("Got Unsupported pattern %s from debsums"
% item)
files.append(item)
files = list(set(files) - set(self.ignores))
# We check if there is file in the checksum to do
if files:
# if files are found there we try to be sure our modlist is sane
# with erroneous symlinks
modlist = [os.path.realpath(filename) for filename in modlist]
bad = [filename for filename in files if filename not in modlist]
if bad:
self.logger.debug("It is suggested that you either manage "
"these files, revert the changes, or "
"ignore false failures:")
self.logger.info("Package %s failed validation. Bad files are:"
% entry.get('name'))
self.logger.info(bad)
entry.set(
'qtext',
"Reinstall Package %s-%s to fix failing files? (y/N) "
% (entry.get('name'), entry.get('version')))
return False
return True
def VerifyPackage(self, entry, modlist, checksums=True):
"""Verify package for entry."""
if 'version' not in entry.attrib:
self.logger.info("Cannot verify unversioned package %s" %
(entry.attrib['name']))
return False
pkgname = entry.get('name')
if self.pkg_cache.has_key(pkgname): # noqa
if self._newapi:
is_installed = self.pkg_cache[pkgname].is_installed
else:
is_installed = self.pkg_cache[pkgname].isInstalled
if not self.pkg_cache.has_key(pkgname) or not is_installed: # noqa
self.logger.info("Package %s not installed" % (entry.get('name')))
entry.set('current_exists', 'false')
return False
pkg = self.pkg_cache[pkgname]
if self._newapi:
installed_version = pkg.installed.version
candidate_version = pkg.candidate.version
else:
installed_version = pkg.installedVersion
candidate_version = pkg.candidateVersion
if entry.get('version') == 'auto':
# pylint: disable=W0212
if self._newapi:
is_upgradable = self.pkg_cache._depcache.is_upgradable(
pkg._pkg)
else:
is_upgradable = self.pkg_cache._depcache.IsUpgradable(
pkg._pkg)
# pylint: enable=W0212
if is_upgradable:
desired_version = candidate_version
else:
desired_version = installed_version
elif entry.get('version') == 'any':
desired_version = installed_version
else:
desired_version = entry.get('version')
if desired_version != installed_version:
entry.set('current_version', installed_version)
entry.set('qtext', "Modify Package %s (%s -> %s)? (y/N) " %
(entry.get('name'), entry.get('current_version'),
desired_version))
return False
else:
# version matches
if not self.setup['quick'] \
and entry.get('verify', 'true') == 'true' \
and checksums:
pkgsums = self.VerifyDebsums(entry, modlist)
return pkgsums
return True
def Remove(self, packages):
"""Deal with extra configuration detected."""
pkgnames = " ".join([pkg.get('name') for pkg in packages])
self.pkg_cache = apt.cache.Cache()
if len(packages) > 0:
self.logger.info('Removing packages:')
self.logger.info(pkgnames)
for pkg in pkgnames.split(" "):
try:
if self._newapi:
self.pkg_cache[pkg].mark_delete(purge=True)
else:
self.pkg_cache[pkg].markDelete(purge=True)
except: # pylint: disable=W0702
if self._newapi:
self.pkg_cache[pkg].mark_delete()
else:
self.pkg_cache[pkg].markDelete()
try:
self.pkg_cache.commit()
except SystemExit:
# thank you python-apt 0.6
pass
self.pkg_cache = apt.cache.Cache()
self.modified += packages
self.extra = self.FindExtra()
def Install(self, packages, states):
# it looks like you can't install arbitrary versions of software
# out of the pkg cache, we will still need to call apt-get
ipkgs = []
bad_pkgs = []
for pkg in packages:
if not self.pkg_cache.has_key(pkg.get('name')): # noqa
self.logger.error("APT has no information about package %s"
% (pkg.get('name')))
continue
if pkg.get('version') in ['auto', 'any']:
if self._newapi:
try:
ipkgs.append("%s=%s" % (
pkg.get('name'),
self.pkg_cache[pkg.get('name')].candidate.version))
except AttributeError:
self.logger.error("Failed to find %s in apt package "
"cache" % pkg.get('name'))
continue
else:
ipkgs.append("%s=%s" % (
pkg.get('name'),
self.pkg_cache[pkg.get('name')].candidateVersion))
continue
# pylint: disable=W0212
if self._newapi:
avail_vers = [
x.ver_str for x in
self.pkg_cache[pkg.get('name')]._pkg.version_list]
else:
avail_vers = [
x.VerStr for x in
self.pkg_cache[pkg.get('name')]._pkg.VersionList]
# pylint: enable=W0212
if pkg.get('version') in avail_vers:
ipkgs.append("%s=%s" % (pkg.get('name'), pkg.get('version')))
continue
else:
self.logger.error("Package %s: desired version %s not in %s"
% (pkg.get('name'), pkg.get('version'),
avail_vers))
bad_pkgs.append(pkg.get('name'))
if bad_pkgs:
self.logger.error("Cannot find correct versions of packages:")
self.logger.error(bad_pkgs)
if not ipkgs:
return
if not self.cmd.run(self.pkgcmd % (" ".join(ipkgs))):
self.logger.error("APT command failed")
self.pkg_cache = apt.cache.Cache()
self.extra = self.FindExtra()
for package in packages:
states[package] = self.VerifyPackage(package, [], checksums=False)
if states[package]:
self.modified.append(package)
def VerifyPath(self, entry, _): # pylint: disable=W0613
"""Do nothing here since we only verify Path type=ignore."""
return True
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