[X2Go-User] Connection failing on Ubuntu 12.04 after upgrade

[Mihai Moldovan]

On 28.04.2015 07:01 PM, Martyn Welch wrote:
> Found the issue.
> 
> We run with numeric usernames (due to our corporate accounts having pure 
> numeric usernames and a wish to use that for authentication). 
> Historically this has been an issue with some old Unix/Linux tools (the 
> username getting mistaken for a UID) however our usernames are 
> sufficiently long that in practice this has never been an issue (and it 
> possibly only affects really old versions of some tools...)
> 
> The temporary fix for me is to modify line 67 of x2gosqlitewrapper.pl in 
> sanitizer(). The line is currently:
> 
> if ($string =~ 
> /^([a-zA-Z\_][a-zA-Z0-9\_\-\.\@]{0,47}[\$]?)\-([\d]{2,4})\-([\d]{9,12})\_[a-zA-Z0-9\_\-\.]*\_dp[\d]{1,2}$/) 
> {
> 
> I changed it to:
> 
> if ($string =~ 
> /^([a-zA-Z0-9\_][a-zA-Z0-9\_\-\.\@]{0,47}[\$]?)\-([\d]{2,4})\-([\d]{9,12})\_[a-zA-Z0-9\_\-\.]*\_dp[\d]{1,2}$/) 
> {
> 
> Notice the addition of the "0-9" in the first part of the regex...

Hm, I'm not sure I want to add that to our packages.

That's non-standard-compliant and you're basically on your own when doing "funky
stuff".

I agree with Robert, a full numeric username is ambiguous, because it *could* be
a UID.



Mihai



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