Hi,
Shared data is common to all users, but the user never edits its
content. The file contains encrypted data for the correct operation of
the program. You are thinking of a typical text editor, for example, but
it is not something like that. In this case, I need shared data for all
users that don't depend on the user itself.
What I'm using is a remote server to update this data and share it
between users, but I think it isn't the most efficient way. I hadn't
thought of a local server, never had. But I look at / App Support and
see data from other non-Apple apps. and I don't understand why the rest
can't eg Adobe, Google ;-).
Regards
Davidap
El 19/4/21 a las 16:28, Flavio Donadio escribió:
Davidap,
I still can’t understand your use case. You say you have a server, but is it a
remote or a local one? I ask that because Uli’s recommendation is to have a local
server for users in the same machine to share the data between them. Yet, from a
development standpoint, that would be pretty much the same as a networked
application (remote server), but it has the “advantage" of getting the network
out of the equation (which makes A LOT of difference).
I’m guessing here, what you want is a “partially-connected client” application:
the user gets data from a server and, if he/she goes offline, can keep working
with the locally-cached data. Probably, a mechanism should be provided for the
user to synchronize that data with the server later. Is this what you want? If
so, the local cache should be kept in the user’s Application Support folder (or
even in a document inside the user’s home folder), because each user’s cached
data can be different.
Regards,
Flavio
Am 19.04.2021 um 04:27 schrieb Davidap <i...@nacsport.com>:
Hi,
I actually currently use a server and the keychain, but I want to share general
data with offline users. I will never use the shared directory of a user, the
best way would be in / Application Support in .localDomainMask, but I don't
know why some applications can and others cannot (the mine is signed and
notarized).
Regards
El 19/4/21 a las 1:51, Uli Kusterer escribió:
On 15. Apr 2021, at 21:29, Flavio Donadio via Cocoa-dev
<cocoa-dev@lists.apple.com> wrote:
Documents that an application generates and that are meant to be directly
manipulated by multiple users of the same machine should be stored in
"/Users/Shared”. It’s the only folder in the whole system that is available to
all users.
That is actually wrong. It is dangerous to create world-writable files and
share them between users. If you need to share data between users that is not
fixed (e.g. it would make sense if Apple installed GarageBand loops in
/Application Support, as they will be used by all users that launch Garage
Band, but since Garage Band comes preinstalled you don't want all that disk
space for the loops to be used, you want to download them later).
If you have databases shared by multiple users, you should use a Launch Agent
plist that launches a server process, then have any instances of your app
currently running (remember, there may be multiple instances running under Fast
User Switching) talk to that process. That way, the process can also enforce
valid file formats, making sure one user can not ruin things for another user
by feeding invalid data or deleting their data.
Cheers,
-- Uli Kusterer
"The Witnesses of TeachText are everywhere..."
http://www.zathras.de
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