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# This is the bcfg2 support for redhat
# $Id: $
'''This is redhat client support'''
__revision__ = '$Revision$'
from copy import deepcopy
from os import popen, system
from popen2 import Popen4
from Bcfg2.Client.Toolset import Toolset
class Redhat(Toolset):
'''This class implelements support for rpm packages and standard chkconfig services'''
rpmcmd = "rpm --oldpackage --replacepkgs --quiet -U %s"
def __init__(self, cfg, setup):
Toolset.__init__(self, cfg, setup)
#self.pkgtodo = []
self.installed = {}
self.installed_this_run = []
self.pkgwork = {'add':[], 'update':[], 'remove':[]}
self.Refresh()
def Refresh(self):
'''Refresh memory hashes of packages'''
self.installed = {}
# Build list of packages
instp = popen("rpm -qa --qf '%{NAME} %{VERSION}\n'")
for line in instp:
[name, version] = line.split(' ')
self.installed[name] = version
def VerifyService(self, entry):
'''Verify Service status for entry'''
try:
srvdata = popen("/sbin/chkconfig --list %s"%entry.attrib['name']).readlines()[0].split()
except IndexError:
# Ocurrs when no lines are returned (service not installed)
return False
if entry.attrib['type'] == 'xinetd':
return entry.attrib['status'] == srvdata[1]
onlevels = [level.split(':')[0] for level in srvdata[1:] if level.split(':')[1] == 'on']
# chkconfig/init.d service
if entry.get('status') == 'on':
return len(onlevels) > 0
else:
return len(onlevels) == 0
def InstallService(self, entry):
'''Install Service entry'''
system("/sbin/chkconfig --add %s"%(entry.attrib['name']))
self.CondPrint('verbose', "Installing Service %s" % (entry.get('name')))
if entry.attrib['status'] == 'off':
if self.setup['dryrun']:
print "Disabling server %s" % (entry.get('name'))
else:
cmdrc = system("/sbin/chkconfig --level 0123456 %s %s" % (entry.attrib['name'], entry.attrib['status']))
else:
if self.setup['dryrun']:
print "Enabling server %s" % (entry.get('name'))
else:
cmdrc = system("/sbin/chkconfig %s %s" %
(entry.attrib['name'], entry.attrib['status']))
if cmdrc == 0:
return True
else:
return False
def VerifyPackage(self, entry, modlist = []):
'''Verify Package status for entry'''
if not (entry.get('name') and entry.get('version')):
print "Can't install package, not enough data."
return False
instp = Popen4("rpm -qi %s-%s" % (entry.get('name'), entry.get('version')))
istat = instp.poll()
while istat == -1:
instp.fromchild.read()
istat = instp.poll()
if istat != 0:
self.CondPrint('debug', "Package %s version incorrect" % entry.get('name'))
else:
if entry.attrib.get('verify', 'true') == 'true':
if self.setup['quick']:
return True
verp = Popen4("rpm --verify -q %s-%s" %
(entry.get('name'),entry.get('version')), bufsize=16384)
odata = ''
vstat = verp.poll()
while vstat == -1:
odata += verp.fromchild.read()
vstat = verp.poll()
output = [line for line in odata.split("\n") if line]
if vstat == 0:
return True
else:
if len([name for name in output if name.split()[-1] not in modlist]):
return True
else:
self.CondPrint('debug',
"Package %s content verification failed" % entry.get('name'))
return False
def Inventory(self):
'''Build up workqueue for installation'''
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 InstallPackage(self, entry):
# '''Install Package entry'''
# self.pkgtodo.append(entry)
# return False
def Install(self):
'''Fix detected misconfigurations'''
self.CondPrint("verbose", "Installing needed configuration changes")
# Dry run info
self.CondPrint('dryrun', "Packages to update: %s" % (" ".join([pkg.get('name') for pkg in self.pkgwork['update']])))
self.CondPrint('dryrun', "Packages to add: %s" % (" ".join([pkg.get('name') for pkg in 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]]
# Counters
## Packages left to install
left = len(work) + len(self.pkgwork['remove'])
## Packages installed in last review
old = left + 1
## Loops gone through
count = 1
# Installation loop
while ((0 < left < old) and (count < 20)):
# Print pass info
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'])))
# Update counters
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(self.rpmcmd % " ".join([pkg.get('url') 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
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(self.rpmcmd % (pkg.get('url')))
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.VerifyEntry(child)
self.CondPrint('debug', "Re-checked entry %s %s: %s" %
(child.tag, child.get('name'), self.states[child]))
for svc in [svc for svc in bchildren if svc.tag == 'Service']:
if self.setup['build']:
# stop services in miniroot
system('/etc/init.d/%s stop' % svc.get('name'))
else:
self.CondPrint('debug', 'Restarting service %s' % svc.get('name'))
system('/etc/init.d/%s %s' % (svc.get('name'), svc.get('reload', 'reload')))
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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