WLC 5508 - WebAuth Bundle tar error 256

Question

Hi all,
I have a new fresh 5508 release 7.0.98.0
When I try to download (I mean upload to the controller) a customized Webauth bundle in .tar format I have the following message error in the syslog :
*TransferTask: Oct 29 12:56:08.894: %UPDATE-3-UNTAR_CMD_FAIL: updcode.c:2832 Error during untar of webauth bundle. Tar returned 256.
If someon could help me...
Thanks

Answer 1

Excellent find, Karl!
I'd just to clarify a bit for those who might not have completely understood this.  Note that Karl said all files and folders must have UID root and GID root.  Running chown root only changes the UID.  To change the GID, you must also run chgrp root .  The easiest way to go about this is to create a new directory, copy your current tar file to it and extract, chown and chgrp against ./*, then tar it back up.
su root     # alternatively, you can use sudo for chown and chgrp
mkdir weblogintmp
cp weblogin.tar weblogintmp/
cd weblogintmp
tar -xvf weblogin.tar
rm weblogin.tar
chown -R root ./*
chgrp -R root ./*
tar -cvf weblogin-new.tar ./*
## the tar file itself doesn't need to have UID and GID root, only the contents of it does.
Karl also pointed out that this must be done from a Unix/Linux-based operating system that a GID (group ID) literally named root.  In BSD-based systems (at least the ones I've worked with, including Mac OSX), the root-equivalent GID is named wheel.  The 5508 WLC with 7.0.98.0 will not accept this.
If you do all of this and it still gets rejected by the WLC, consider that there might actually be something else wrong with it.  There's a fantastic article in the Documents section of the Security and Network Management group which helped me figure out a couple issues I had in the past:
https://supportforums.cisco.com/docs/DOC-13954
Here's a snippet that pertains to not being able to transfer your webauth bundle to a WLC:
"There are some limitations with custom webauth that varies with versions  and bugs. The things to watch for are .tar file size (used to be 1Meg  maximum), also the number of files in the .tar as well as the filename  length of the files in there (something like 30 characters max for a  file)."