Unify WebDav, CalDAV and CardDav entrypoints

[DeepDiver1975]

** reminder for myself and @jancborchardt **

some more explanation here from @evert - see #4951 (comment)

Hey guys,

I am at CalConnect, which is the tri-yearly meetup for the internet calendaring standards organization. We do testing between a bunch of different vendors, and as I'm representing sabredav, I also get questions about owncloud.

One of the things that was mentioned was the fact that owncloud exposes 2 separate endpoints for cal- and carddav. Specifically for some clients that support both these protocols, it can be a bit confusing as there are also 2 principal urls.

I think it would be good to combine both endpoints into one. I imagine it should be relatively easy, as you just need to make sure that calendars and addressbooks are in both trees, and all plugins are loaded for both endpoints.

That way you also don't have to break the existing urls.

I feel this is a better design, and will provide better compatibility as clients get more advanced.

[karlitschek]

Not sure why this is important.

[jancborchardt]

So that

• other apps can also make use of the unified addresses – so that there can be other calendar and contacts apps
• the addresses can be shorter, which is really important for when you need to punch it in on a mobile phone

More reasons @DeepDiver1975?

[DeepDiver1975]

CalDAV and CardDav urls are as of today handled by the calendar and contacts apps.

Because it's our main architecture principle to NOT depend on other apps as of today I could only reimplement all the *DAV code within my own app and have to export another dav url.

The goal should be to move the caldav and carddav core mechanisms into ownCloud core and provide PUBLIC API to register adressbooks and calendars which can follow their own implementations.

[DeepDiver1975]

In addition with respect to the requirements to implement proper DAV permissions we need to restructure the root webdav element anyhow:
https://github.com/fruux/sabre-dav/wiki/Sabre-DAVACL-Plugin

[jancborchardt]

Is this related or even a duplicate of #4951? cc @evert

[evert]

sounds like a duplicate to me!

[zkvvoob]

Sorry, I posted a duplicate topic. Anyway, like I wrote on the forum, there's an Android app called DAV Droid which can sync both calendar and contacts, but currently this is only possible through adding two separate accounts which is not very pretty or convenient.

It would be quite helpful if owncloud could give *DAV access via a common URL, something like example.com/cloud/remote.php/.

And why not consider a future possibility for a single syncing app which would permit file access, as well as address book and calendar synchronisation?

[simonbuehler]

on a side note:
could the urls be shortenen somehow, its really hard to enter that long urls twice on a smartphone, thx

[DeepDiver1975]

basically done -> closing

[lock]

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