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Hi Bruno, Achim and Andrew,

> The normal approach when subscribing to another person's calendar, is to
> use your own credentials to do so and ensure that the other person has
> granted you some permission to see their events.
>

With this patch I mainly wanted to fix the problem for Thunderbid.

I could use just one credential per server and that should solve the
problem,
but if someone wanted to use 2 calendars with 2 credential using Thunderbid
and Davical, what would not work without a patch like this.

If using 2 or more credential with Davical works in other CalDAV
clients, then maybe
its only a Thunderbird bug and we should wait until Mozilla solve the issue.

Let me try the permission system in Davical with Thunderbird and report
back.

Regards,
Oliver

--
Oliver Schulze L.
Asuncion - Paraguay
http://tinymailto.com/oliver



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On Tue, 2010-05-11 at 18:42 -0600, Oliver Schulze L. wrote:
> Hi Bruno, Achim and Andrew,
>
> > The normal approach when subscribing to another person's calendar, is to
> > use your own credentials to do so and ensure that the other person has
> > granted you some permission to see their events.
> >
>
> With this patch I mainly wanted to fix the problem for Thunderbid.
>
> I could use just one credential per server and that should solve the
> problem,
> but if someone wanted to use 2 calendars with 2 credential using Thunderbid
> and Davical, what would not work without a patch like this.
>
> If using 2 or more credential with Davical works in other CalDAV
> clients, then maybe
> its only a Thunderbird bug and we should wait until Mozilla solve the issue.
>
> Let me try the permission system in Davical with Thunderbird and report
> back.

Well, certainly some other caldav clients *do* let you use different
credentials for different calendars (Evolution, for example), but I
still don't understand the *need*.

For example I can see half a dozen calendars on the local caldav server
here, all subscribed to using the *same* credentials (even if I do use
Evolution, where annoyingly I have to provide them individually each
time :-), and all with varying amounts of permission granted to access
them.

If I want to subscribe to Heather's calendar, surely I should be doing
so as Andrew, and not as Heather, and then Heather can choose to grant
me the permissions which she wants me to have, so that I can't see her
confidential events, etc. Or maybe it's OK for *me* to see those, but
she doesn't want *other* people to see them.

What nobody has (still) explained to me is some kind of use case for why
you would connect to the same caldav server as multiple individuals...

Some software enforces the single credential even more forcefully than
Lightning, but it lets you browse around the server and see all of the
calendars you have access to, or it finds all of the calendars which you
have been delegated read or read+write access to, noninteractively, not
even letting you *see* a calendar URL. I expect that this is the
direction which most CalDAV client software will go over time.

Cheers,
Andrew.

--
------------------------------------------------------------------------
andrew (AT) morphoss (DOT) com +64(272)DEBIAN
Bruce Schneier can log into any computer just by staring down the prompt.
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Hi Andrew,
you have a point. I'm just setting up a server with Davical and wanted
to test using different calendars/users.

But in a production environment, a single credencial per user should be
suficient. In other systems(ie Lotus Domino), as you point up, a user has
only 1 credential.

Regards,
Oliver

El 12/05/2010 02:44, Andrew McMillan escribi?:
> On Tue, 2010-05-11 at 18:42 -0600, Oliver Schulze L. wrote:
>
>> Hi Bruno, Achim and Andrew,
>>
>>
>>> The normal approach when subscribing to another person's calendar, is to
>>> use your own credentials to do so and ensure that the other person has
>>> granted you some permission to see their events.
>>>
>>>
>> With this patch I mainly wanted to fix the problem for Thunderbid.
>>
>> I could use just one credential per server and that should solve the
>> problem,
>> but if someone wanted to use 2 calendars with 2 credential using Thunderbid
>> and Davical, what would not work without a patch like this.
>>
>> If using 2 or more credential with Davical works in other CalDAV
>> clients, then maybe
>> its only a Thunderbird bug and we should wait until Mozilla solve the issue.
>>
>> Let me try the permission system in Davical with Thunderbird and report
>> back.
>>
> Well, certainly some other caldav clients *do* let you use different
> credentials for different calendars (Evolution, for example), but I
> still don't understand the *need*.
>
> For example I can see half a dozen calendars on the local caldav server
> here, all subscribed to using the *same* credentials (even if I do use
> Evolution, where annoyingly I have to provide them individually each
> time :-), and all with varying amounts of permission granted to access
> them.
>
> If I want to subscribe to Heather's calendar, surely I should be doing
> so as Andrew, and not as Heather, and then Heather can choose to grant
> me the permissions which she wants me to have, so that I can't see her
> confidential events, etc. Or maybe it's OK for *me* to see those, but
> she doesn't want *other* people to see them.
>
> What nobody has (still) explained to me is some kind of use case for why
> you would connect to the same caldav server as multiple individuals...
>
> Some software enforces the single credential even more forcefully than
> Lightning, but it lets you browse around the server and see all of the
> calendars you have access to, or it finds all of the calendars which you
> have been delegated read or read+write access to, noninteractively, not
> even letting you *see* a calendar URL. I expect that this is the
> direction which most CalDAV client software will go over time.
>
> Cheers,
> Andrew.
>
>

--
Oliver Schulze L.
Asuncion - Paraguay
http://tinymailto.com/oliver



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