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Editing: up2dateAuth.py

import os
import pickle
import sys
import time
import socket
import subprocess
from up2date_client import rpcServer

try: # python2
    from types import DictType
except ImportError: # python3
    DictType = dict

from rhn import rpclib
from up2date_client import clientCaps
from up2date_client import config
from up2date_client import rhnserver
from up2date_client import up2dateErrors
from up2date_client import up2dateLog
from up2date_client import up2dateUtils

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():
    # if process is in the middle of system upgrade, do not switch channel automatically
    if os.environ.get('LEAPP_IPU_IN_PROGRESS'):
        return

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 not cfg['channelOverride'] and idVer != systemVer:
      s = rhnserver.RhnServer()

newSystemId = s.registration.upgrade_version(getSystemId(), systemVer)

path = cfg["systemIdPath"]
      dir = path[:path.rfind("/")]
      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, int('0600', 8))
      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, int('0700', 8))
        except:
            log.log_me("Unable to write pickled loginInfo to %s" % pcklDir)
            return False
    pcklAuth = open(pcklAuthFileName, 'wb')
    os.chmod(pcklAuthFileName, int('0600', 8))
    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, ValueError):
        log.log_debug("Unexpected EOF. Probably an empty file, \
                       regenerate auth file")
        pcklAuth.close()
        return False
    pcklAuth.close()
    # Check if system_id has changed
    try:
        idVer = rpclib.xmlrpclib.loads(getSystemId())[0][0]['system_id']
        cidVer = "ID-%s" % data['loginInfo']['X-RHN-Server-Id']
        if idVer != cidVer:
            log.log_debug("system id version changed: %s vs %s" % (idVer, cidVer))
            return False
    except:
        pass
    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, socket.getfqdn(), _get_panel_name(log))

# 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

class _FailedToGetPanelName(Exception):
    pass

def _get_panel_name(log):
    try:
        panel_name = _get_panel_name_via_cldetect()
    except _FailedToGetPanelName:
        # Do not spam logs when we're executed from under cldeploy script
        # and no cloudlinux packages are yet installed.
        if not _is_cldeploy_running():
            log.log_exception(*sys.exc_info())
            log.log_me("Failed to get panel name via cldetect, using fallback mechanism")
        panel_name = _fallback_get_panel_name()
    return panel_name.lower()

def _is_cldeploy_running():
    # NOTE(vlebedev): This is more or less a direct port of shell code from cldeploy script.
    lock_file_path = '/var/lock/cldeploy.lck'
    cldeploy_running = False
    pid = None

if os.path.exists(lock_file_path):
        with open(lock_file_path) as f:
            pid = f.read().strip()
    if pid:
        pid_cmdline_path = "/proc/%s/cmdline" % pid
        if os.path.exists(pid_cmdline_path):
            with open(pid_cmdline_path) as f:
                cldeploy_running = 'cldeploy' in f.read()
    return cldeploy_running

def _get_panel_name_via_cldetect():
    binary, _ = cmd = ["/usr/bin/cldetect", "--detect-cp-nameonly"]
    if not os.path.exists(binary):
        raise _FailedToGetPanelName(
            "Failed to obtain panel name because '%s' does not exist"
            % binary
        )

process = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True)
    stdout, stderr = process.communicate()
    if process.returncode != 0:
        raise _FailedToGetPanelName(
            "Failed to obtain panel name using '%s' command; stderr: %s"
            % (" ".join(cmd), stderr)
        )

return stdout.strip()

def _fallback_get_panel_name():
    # NOTE(vlebedev): This is more or less a direct port of shell code from cldeploy script.
    # TODO(vlebedev): Pass $PANEL from cldeploy instead of duplication?
    if os.path.isdir("/usr/local/psa/admin/"):
        return "plesk"
    if os.path.isdir("/usr/local/interworx/"):
        return "interworx"
    if os.path.isdir("/usr/local/cpanel/whostmgr/docroot/"):
        return "cpanel"
    if os.path.isdir("/usr/local/ispmgr/"):
        return "ispmgr"
    if os.path.isdir("/usr/local/directadmin/"):
        return "directadmin"
    if os.path.isfile("/usr/local/mgr5/sbin/mgrctl"):
        return "ispmgr5"
    return "unknown"

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