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'''This is the bcfg2 support for apt-get'''
__revision__ = '$Revision$'
# suppress apt API warnings
import warnings
warnings.filterwarnings("ignore", "apt API not stable yet",
FutureWarning)
warnings.filterwarnings("ignore", "Accessed deprecated property Package.installedVersion, please see the Version class for alternatives.", DeprecationWarning)
warnings.filterwarnings("ignore", "Accessed deprecated property Package.candidateVersion, please see the Version class for alternatives.", DeprecationWarning)
import apt.cache
import os
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__ = ['/usr/bin/debsums', '/usr/bin/apt-get', '/usr/bin/dpkg']
__important__ = ["/etc/apt/sources.list",
"/var/cache/debconf/config.dat",
"/var/cache/debconf/templates.dat",
'/etc/passwd', '/etc/group',
'/etc/apt/apt.conf', '/etc/dpkg/dpkg.cfg']
__handles__ = [('Package', 'deb')]
__req__ = {'Package': ['name', 'version']}
pkgcmd = 'apt-get ' + \
'-o DPkg::Options::=--force-overwrite ' + \
'-o DPkg::Options::=--force-confold ' + \
'--reinstall ' + \
'-q=2 ' + \
'--force-yes ' + \
'-y install %s'
def __init__(self, logger, cfg, setup):
Bcfg2.Client.Tools.Tool.__init__(self, logger, cfg, setup)
self.cfg = cfg
os.environ["DEBIAN_FRONTEND"] = 'noninteractive'
self.actions = {}
if self.setup['kevlar'] and not self.setup['dryrun']:
self.cmd.run("dpkg --force-confold --configure --pending")
self.cmd.run("apt-get clean")
self.pkg_cache = apt.cache.Cache()
self.pkg_cache.update()
self.pkg_cache = apt.cache.Cache()
def FindExtra(self):
'''Find extra packages'''
packages = [entry.get('name') for entry in self.getSupportedEntries()]
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):
output = self.cmd.run("/usr/bin/debsums -as %s" % entry.get('name'))[1]
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 "can't open" in item:
files.append(item.split()[5])
elif "is not installed" 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)
# 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.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 not 'version' in entry.attrib:
self.logger.info("Cannot verify unversioned package %s" %
(entry.attrib['name']))
return False
pkgname = entry.get('name')
if not self.pkg_cache.has_key(pkgname) \
or not self.pkg_cache[pkgname].isInstalled:
self.logger.info("Package %s not installed" % (entry.get('name')))
entry.set('current_exists', 'false')
return False
pkg = self.pkg_cache[pkgname]
if entry.get('version') == 'auto':
if self.pkg_cache._depcache.IsUpgradable(pkg._pkg):
desiredVersion = pkg.candidateVersion
else:
desiredVersion = pkg.installedVersion
elif entry.get('version') == 'any':
desiredVersion = pkg.installedVersion
else:
desiredVersion = entry.get('version')
if desiredVersion != pkg.installedVersion:
entry.set('current_version', pkg.installedVersion)
entry.set('qtext', "Modify Package %s (%s -> %s)? (y/N) " % \
(entry.get('name'), entry.get('current_version'),
entry.get('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:
self.pkg_cache[pkg].markDelete(purge=True)
except:
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')):
self.logger.error("APT has no information about package %s" % (pkg.get('name')))
continue
if pkg.get('version') in ['auto', 'any']:
ipkgs.append("%s=%s" % (pkg.get('name'),
self.pkg_cache[pkg.get('name')].candidateVersion))
continue
avail_vers = [x.VerStr for x in \
self.pkg_cache[pkg.get('name')]._pkg.VersionList]
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
rc = self.cmd.run(self.pkgcmd % (" ".join(ipkgs)))[0]
if rc:
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)
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