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#
# $Id$
import rhnserver
import config
import os
import up2dateErrors
import up2dateUtils
import string
import up2dateLog
import clientCaps
import pickle
import time
from types import DictType
from rhn import rpclib
loginInfo = None
pcklAuthFileName = "/var/spool/up2date/loginAuth.pkl"
def getSystemId():
cfg = config.initUp2dateConfig()
path = cfg["systemIdPath"]
if not os.access(path, os.R_OK):
return None
f = open(path, "r")
ret = f.read()
f.close()
return ret
# if a user has upgraded to a newer release of Red Hat but still
# has a systemid from their older release, they need to get an updated
# systemid from the RHN servers. This takes care of that.
def maybeUpdateVersion():
cfg = config.initUp2dateConfig()
try:
idVer = rpclib.xmlrpclib.loads(getSystemId())[0][0]['os_release']
except:
# they may not even have a system id yet.
return 0
systemVer = up2dateUtils.getVersion()
if idVer != systemVer:
s = rhnserver.RhnServer()
newSystemId = s.registration.upgrade_version(getSystemId(), systemVer)
path = cfg["systemIdPath"]
dir = path[:string.rfind(path, "/")]
if not os.access(dir, os.W_OK):
try:
os.mkdir(dir)
except:
return 0
if not os.access(dir, os.W_OK):
return 0
if os.access(path, os.F_OK):
# already have systemid file there; let's back it up
savePath = path + ".save"
try:
os.rename(path, savePath)
except:
return 0
f = open(path, "w")
f.write(newSystemId)
f.close()
try:
os.chmod(path, 0600)
except:
pass
def writeCachedLogin():
"""
Pickle loginInfo to a file
Returns:
True -- wrote loginInfo to a pickle file
False -- did _not_ write loginInfo to a pickle file
"""
log = up2dateLog.initLog()
log.log_debug("writeCachedLogin() invoked")
if not loginInfo:
log.log_debug("writeCachedLogin() loginInfo is None, so bailing.")
return False
data = {'time': time.time(),
'loginInfo': loginInfo}
pcklDir = os.path.dirname(pcklAuthFileName)
if not os.access(pcklDir, os.W_OK):
try:
os.mkdir(pcklDir)
os.chmod(pcklDir, 0700)
except:
log.log_me("Unable to write pickled loginInfo to %s" % pcklDir)
return False
pcklAuth = open(pcklAuthFileName, 'wb')
os.chmod(pcklAuthFileName, 0600)
pickle.dump(data, pcklAuth)
pcklAuth.close()
expireTime = data['time'] + float(loginInfo['X-RHN-Auth-Expire-Offset'])
log.log_debug("Wrote pickled loginInfo at ", data['time'], " with expiration of ",
expireTime, " seconds.")
return True
def readCachedLogin():
"""
Read pickle info from a file
Caches authorization info for connecting to the server.
"""
log = up2dateLog.initLog()
log.log_debug("readCachedLogin invoked")
if not os.access(pcklAuthFileName, os.R_OK):
log.log_debug("Unable to read pickled loginInfo at: %s" % pcklAuthFileName)
return False
pcklAuth = open(pcklAuthFileName, 'rb')
try:
data = pickle.load(pcklAuth)
except EOFError:
log.log_debug("Unexpected EOF. Probably an empty file, \
regenerate auth file")
pcklAuth.close()
return False
pcklAuth.close()
createdTime = data['time']
li = data['loginInfo']
currentTime = time.time()
expireTime = createdTime + float(li['X-RHN-Auth-Expire-Offset'])
#Check if expired, offset is stored in "X-RHN-Auth-Expire-Offset"
log.log_debug("Checking pickled loginInfo, currentTime=", currentTime,
", createTime=", createdTime, ", expire-offset=",
float(li['X-RHN-Auth-Expire-Offset']))
if (currentTime > expireTime):
log.log_debug("Pickled loginInfo has expired, created = %s, expire = %s." \
%(createdTime, expireTime))
return False
_updateLoginInfo(li)
log.log_debug("readCachedLogin(): using pickled loginInfo set to expire at ", expireTime)
return True
def _updateLoginInfo(li):
"""
Update the global var, "loginInfo"
"""
global loginInfo
if type(li) == DictType:
if type(loginInfo) == DictType:
# must retain the reference.
loginInfo.update(li)
else:
# this had better be the initial login or we lose the reference.
loginInfo = li
else:
loginInfo = None
# allow to pass in a system id for use in rhnreg
# a bit of a kluge to make caps work correctly
def login(systemId=None, forceUpdate=False, timeout=None):
log = up2dateLog.initLog()
log.log_debug("login(forceUpdate=%s) invoked" % (forceUpdate))
if not forceUpdate and not loginInfo:
if readCachedLogin():
return loginInfo
server = rhnserver.RhnServer(timeout=timeout)
# send up the capabality info
headerlist = clientCaps.caps.headerFormat()
for (headerName, value) in headerlist:
server.add_header(headerName, value)
if systemId == None:
systemId = getSystemId()
if not systemId:
return None
maybeUpdateVersion()
log.log_me("logging into up2date server")
li = server.up2date.login(systemId)
# figure out if were missing any needed caps
server.capabilities.validate()
_updateLoginInfo(li) #update global var, loginInfo
writeCachedLogin() #pickle global loginInfo
if loginInfo:
log.log_me("successfully retrieved authentication token "
"from up2date server")
log.log_debug("logininfo:", loginInfo)
return loginInfo
def updateLoginInfo(timeout=None):
log = up2dateLog.initLog()
log.log_me("updateLoginInfo() login info")
# NOTE: login() updates the loginInfo object
login(forceUpdate=True, timeout=timeout)
if not loginInfo:
raise up2dateErrors.AuthenticationError("Unable to authenticate")
return loginInfo
def getLoginInfo(timeout=None):
global loginInfo
try:
loginInfo = loginInfo
except NameError:
loginInfo = None
if loginInfo:
return loginInfo
# NOTE: login() updates the loginInfo object
login(timeout=timeout)
return loginInfo