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'''This is the bcfg2 support for debian'''
__revision__ = '$Revision$'
from copy import deepcopy
from glob import glob
from os import environ, system
from popen2 import Popen4
import apt_pkg
from Bcfg2.Client.Toolset import Toolset
class Debian(Toolset):
'''The Debian toolset implements package and service operations and inherits
the rest from Toolset.Toolset'''
__important__ = ["/etc/apt/sources.list", "/var/cache/debconf/config.dat", \
"/var/cache/debconf/templates.dat", '/etc/passwd', '/etc/group', \
'/etc/apt/apt.conf']
def __init__(self, cfg, setup):
Toolset.__init__(self, cfg, setup)
self.cfg = cfg
environ["DEBIAN_FRONTEND"] = 'noninteractive'
system("dpkg --force-confold --configure -a")
if not self.setup['build']:
system("dpkg-reconfigure -f noninteractive debconf < /dev/null")
system("apt-get -q=2 -y update")
self.installed = {}
self.installed_this_run = []
self.pkgwork = {'add':[], 'update':[], 'remove':[]}
self.Refresh()
def Refresh(self):
'''Refresh memory hashes of packages'''
apt_pkg.init()
cache = apt_pkg.GetCache()
self.installed = {}
for pkg in cache.Packages:
if pkg.CurrentVer:
self.installed[pkg.Name] = pkg.CurrentVer.VerStr
# implement entry (Verify|Install) ops
def VerifyService(self, entry):
'''Verify Service status for entry'''
files = glob("/etc/rc*.d/*%s" % (entry.get('name')))
if entry.get('status') == 'off':
if files:
return False
else:
return True
else:
if files:
return True
else:
return False
def InstallService(self, entry):
'''Install Service for entry'''
self.CondPrint('verbose', "Installing Service %s" % (entry.get('name')))
if entry.attrib['status'] == 'off':
if self.setup['dryrun']:
print "Disabling service %s" % (entry.get('name'))
return False
else:
cmdrc = system("update-rc.d -f %s remove" % entry.get('name'))
else:
if self.setup['dryrun']:
print "Enabling service %s" % (entry.attrib['name'])
return False
else:
cmdrc = system("update-rc.d %s defaults" % (entry.attrib['name']))
if cmdrc:
return False
return True
def VerifyPackage(self, entry, modlist):
'''Verify Package for entry'''
if self.installed.has_key(entry.attrib['name']):
if self.installed[entry.attrib['name']] == entry.attrib['version']:
if not self.setup['quick']:
cmd = Popen4("debsums -s %s"%(entry.attrib['name']))
cstat = cmd.poll()
output = cmd.fromchild.read()
while cstat == -1:
output += cmd.fromchild.read()
cstat = cmd.poll()
output = [line for line in output.split('\n') if line]
if [filename for filename in output if filename not in modlist]:
return False
return True
return False
def Inventory(self):
'''Inventory system status'''
self.CondPrint('verbose', "Inventorying system...")
Toolset.Inventory(self)
self.pkgwork = {'add':[], 'update':[], 'remove':[]}
all = deepcopy(self.installed)
desired = {}
for entry in self.cfg.findall(".//Package"):
desired[entry.attrib['name']] = entry
for pkg, entry in desired.iteritems():
if self.states.get(entry, True):
# package entry verifies
del all[pkg]
else:
if all.has_key(pkg):
# wrong version
del all[pkg]
self.pkgwork['update'].append(entry)
else:
# new pkg
self.pkgwork['add'].append(entry)
# pkgwork contains all one-way verification data now
# all data remaining in all is extra packages
self.pkgwork['remove'] = all.keys()
def Install(self):
'''Correct detected misconfigurations'''
self.CondPrint("verbose", "Installing needed configuration changes")
cmd = '''apt-get --reinstall -q=2 -y install %s'''
print "Need to remove:", self.pkgwork['remove']
self.setup['quick'] = True
self.CondPrint('dryrun', "Packages to update: %s" % (" ".join(self.pkgwork['update'])))
self.CondPrint('dryrun', "Packages to add: %s" % (" ".join(self.pkgwork['add'])))
self.CondPrint('dryrun', "Packages to remove %s" % (" ".join(self.pkgwork['remove'])))
for entry in [entry for entry in self.states if (not self.states[entry]
and (entry.tag != 'Package'))]:
self.CondPrint('dryrun', "Entry %s %s updated" % (entry.tag, entry.get('name')))
if self.setup['dryrun']:
return
# build up work queue
work = self.pkgwork['add'] + self.pkgwork['update']
# add non-package entries
work += [ent for ent in self.states if ent.tag != 'Package' and not self.states[ent]]
left = len(work) + len(self.pkgwork['remove'])
old = left + 1
count = 1
while ((0 < left < old) and (count < 20)):
self.CondPrint('verbose', "Starting pass %s" % (count))
self.CondPrint("verbose", "%s Entries left" % (len(work)))
self.CondPrint('verbose', "%s new, %s update, %s remove" %
(len(self.pkgwork['add']), len(self.pkgwork['update']),
len(self.pkgwork['remove'])))
count = count + 1
old = left
self.CondPrint("verbose", "Installing Non Package entries")
[self.InstallEntry(ent) for ent in work if ent.tag != 'Package']
packages = [pkg for pkg in work if pkg.tag == 'Package']
if packages:
# try single large install
self.CondPrint("verbose", "Trying single pass package install")
cmdrc = system(cmd % " ".join(["%s=%s" % (pkg.get('name'), pkg.get('version', 'dummy'))
for pkg in packages]))
if cmdrc == 0:
self.CondPrint('verbose', "Single Pass Succeded")
# set all states to true and flush workqueues
for pkg in packages:
self.states[pkg] = True
self.Refresh()
else:
self.CondPrint("verbose", "Single Pass Failed")
# do single pass installs
system("dpkg --configure --pending")
self.Refresh()
for pkg in packages:
# handle state tracking updates
if self.VerifyPackage(pkg):
self.CondPrint("verbose", "Forcing state to true for pkg %s" % (pkg.get('name')))
self.states[pkg] = True
else:
self.CondPrint("verbose", "Installing pkg %s version %s" %
(pkg.get('name'), pkg.get('version')))
cmdrc = system(cmd % ("%s=%s" % (pkg.get('name'), pkg.get('version'))))
if cmdrc == 0:
self.states[pkg] = True
else:
self.CondPrint('verbose', "Failed to install package %s" % (pkg.get('name')))
for entry in [ent for ent in work if self.states[ent]]:
work.remove(entry)
self.installed_this_run.append(entry)
left = len(work) + len(self.pkgwork['remove'])
self.HandleBundleDeps()
def HandleBundleDeps(self):
'''Handle bundles depending on what has been modified'''
for entry in [child for child in self.structures if child.tag == 'Bundle']:
bchildren = entry.getchildren()
if [b_ent for b_ent in bchildren if b_ent in self.installed_this_run]:
# This bundle has been modified
self.CondPrint('verbose', "%s %s needs update" % (entry.tag, entry.get('name', '???')))
modfiles = [cfile.get('name') for cfile in bchildren if cfile.tag == 'ConfigFile']
for child in bchildren:
if child.tag == 'Package':
self.VerifyPackage(child, modfiles)
else:
self.VerifyPackage(child)
self.CondPrint('debug', "Re-checked entry %s %s: %s" %
(child.tag, child.get('name'), self.states[child]))
for svc in [svc.get('name') for svc in bchildren if svc.tag == 'Service']:
if self.setup['build']:
# stop services in miniroot
system("/etc/init.d/%s stop" % (svc))
else:
self.CondPrint('debug', "Restarting service %s" % (svc))
system('/etc/init.d/%s reload > /dev/null' % (svc))
for entry in self.structures:
if [strent for strent in entry.getchildren() if not self.states[strent]]:
self.CondPrint('verbose', "%s %s incomplete" % (entry.tag, entry.get('name', "")))
else:
self.structures[entry] = True
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