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Re: Identifying Computers


Hello Steve,

first let me thank you for your enlightening explanation.

I started today after receiving my invitation to the beta
program.  After I installed the ubuntuone-client package
it refused to startup.  

Let me explain my setup: I've some paranoia and even with 
Firefox plugins like noScript installed I wanted to 
protect myself and my data against a firefox process 
executing maliciuos code.

So I've created a new user account on my computer 
solely for the purpose of running firefox in this account
and so with restricted rights (less group memberships, no access
to my private data).  Instead of starting firefox directly
I've a menu entry running the command
	ssh -X surferrole@localhost firefox
to launch my web browser.  In the menu preferences->preferred applications
(I hope it called so in english, because I run Gnome in
German I translated this back) I've configured the following
command as my preferred web browser command:
        ssh surferrole@localhost firefox -new-tab "'%s'"

For some reason the ubuntuone-client-applet was unable
to deal with this somewhat special situation.  

I finally found its logfile which was somewhat hidden in a subdirectory
as $HOME/.cache/ubuntuone/log/oauth-login.log and pasted the URL
from this logfile manually in new firefox browser window running on
my own account.  That ugly workaround made it possible to continue
a little bit.  But the "Go to Web" menu entry from the applet 
still doesn't work as I would have expected:  It open a new tab in
my firefox running as user "surferrole" instead of my account.
But that's it.

Steve Alexander schrieb am Dienstag, den 30.06.2009 um 15:24:
> Hi Nitesh,
> This is a great question.  I'll try to answer it as fully as I can.
> Nitesh Mistry wrote:
>> Hello all,
>> I have created a live-cd of Kubuntu 9.04 which i use in persistent mode.
>> What I want to know is how does Ubuntu One recognise the computers 
>> added to the service. Even if I use the live-usb on different 
>> computers, will it detect it as one computer?
>> Hope I am clear in my query.
> Although we talk about computers being added to the service, what we  
> really mean is accounts on a computer being set up to talk to the 
> service.
> So, I have an account called 'steve' on my desktop computer, and that  
> account is registered with Ubuntu One.
> I can look at this using the "Passwords and Encryption Keys" program,  
> which is in this menu:
> Applications -> Accessories -> Passwords and Encryption Keys
> If I look under the "Passwords" tab and expand the "Passwords: login"  
> part of the table, I can see a row that says
>   UbuntuOne token for https://ubuntuone.com
> Right-clicking on that, and choosing "propertise", I can see the key.  
> It's even possible to see the actual password.  Mine is:
>   oauth_token_secret=pHxxxxxxx...&oauth_token=XhXxxxxx...
> This token is what registers my account on this computer with Ubuntu  
> One.  I also have a laptop computer, and that's registered with Ubuntu  
> One too, but with a different token.
> If a friend also had an account on my laptop, she'd have a different  
> token from me.  So, effectively, my laptop would be registered to two  
> people who use Ubuntu One.
> When you use a live cd, or a live usb image, that's like a  
> freshly-installed operating system, with a brand new user account. Then, 
> when you persist the user account, the Ubuntu One token for that user 
> account will be persisted too.  So, as far as Ubuntu One knows, wherever 
> you use that live usb image with the same persisted user account, it will 
> be the same "computer", because it has the same token.
> -- Steve
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Regards, Peter
Peter Funk, ✉Oldenburger Str.86, D-27777 Ganderkesee
office: ArtCom GmbH, ✉Haferwende 2, D-28357 Bremen, Germany 
tel:+49-421-20419-0 cell:+49-179-640-8878 <http://www.artcom-gmbh.de/>

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