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'''This is the bcfg2 support for apt-get'''
__revision__ = '$Revision$'
import apt.cache
import os, re
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.pkg_cache = apt.cache.Cache()
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")
try:
self.pkg_cache.update()
except:
self.logger.error("Failed to update apt 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 entry.attrib.has_key('version'):
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])
if len(packages) > 0:
self.logger.info('Removing packages:')
self.logger.info(pkgnames)
for pkg in pkgnames:
self.pkg_cache[pkg].markDelete(purge=True)
self.pkg_cache.commit()
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 = []
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') == 'auto':
ipkgs.append("%s=%s" % (pkg.get('name'),
self.pkg_cache[pkg.get('name')].candidateVersion))
continue
if pkg.get('version') in \
[p.VerStr for p in self.pkg_cache[pkg.get('name')]._pkg.VersionList]:
ipkgs.append("%s=%s" % (pkg.get('name'), pkg.get('version')))
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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