Description of problem:

I have up2date setup with a local yum repositories for errata updates.  I
downloaded the latest kernel packages today and forgot to make them world readable.

I then tried to update one of my client machines to the latest kernel and go the
following error:

Fetching Obsoletes list for channel: rhel4-updates...
 
Name                                    Version        Rel
----------------------------------------------------------
kernel-smp                              2.6.9          5.0.3.EL          i686
 
 
Testing package set / solving RPM inter-dependencies...
########################################
kernel-smp-2.6.9-5.0.3.EL.i
Traceback (most recent call last):
  File "/usr/sbin/up2date", line 1245, in ?
    sys.exit(main() or 0)
  File "/usr/sbin/up2date", line 800, in main
    fullUpdate, dryRun=options.dry_run))
  File "/usr/sbin/up2date", line 1119, in batchRun
    batch.run()
  File "/usr/share/rhn/up2date_client/up2dateBatch.py", line 83, in run
    self.__getPackages()
  File "/usr/share/rhn/up2date_client/up2dateBatch.py", line 164, in __getPackages
    up2date.getPackage(pkg, wrapperUtils.printPkg, wrapperUtils.printRetrieveHash)
  File "/usr/share/rhn/up2date_client/up2date.py", line 178, in getPackage
    buf = rpcServer.doCall(repos.getPackage, pkg, msgCallback, progressCallback)
 File "/usr/share/rhn/up2date_client/rpcServer.py", line 309, in doCall
    ret = apply(method, args, kwargs)
  File "/usr/share/rhn/up2date_client/repoDirector.py", line 35, in getPackage
    return self.handlers[channel['type']].getPackage(pkg, msgCallback,
progressCallback)
  File "/usr/share/rhn/up2date_client/rpmSource.py", line 186, in getPackage
    package = source.getPackage(pkg, MsgCallback, progressCallback)
  File "/usr/share/rhn/up2date_client/repoBackends/yumRepo.py", line 138, in
getPackage
    agent = "Up2date %s/Yum" % up2dateUtils.version())
  File "/usr/share/rhn/up2date_client/repoBackends/urlUtils.py", line 360, in
fetchUrlAndWriteFD
    ret =  readFDBufWriteFD(fh, writefd, progressCallback)
  File "/usr/share/rhn/up2date_client/repoBackends/urlUtils.py", line 295, in
readFDBufWriteFD
    amt = size - size_read
TypeError: unsupported operand type(s) for -: 'NoneType' and 'int'

Obviously, the problem was that it couldn't download the file, but it should
give an error message to that effect instead of generating a traceback.


Version-Release number of selected component (if applicable):
up2date-4.4.5-1

How reproducible:
Every time

Steps to Reproduce:
1.  Make a package available in a yum repository
2.  Change permissions such that the file isn't accessible (unreadable by the
    web server)
3.  Try to use up2date to install/upgrade the package
  
Actual results:
Traceback dump

Expected results:
An error message indicating that up2date couldn't read/find the file.


Additional info: