iPhones creating contacts via CardDav

[dllfpp]

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Summary of the issue you are facing:

My local NextCloud admin account is sharing Contacts books to another user with read only access. This user is being used in an MDM policy for iPhones (through Miradore) for our company phones to read this contacts book via CardDav. Everything looks correct but some telephones are able to create entries in a “Contacts” book which isn’t visible anywhere in my NextCloud administration dashboard.

Steps to replicate it (hint: details matter!):

1. iPhone Settings > Apps > Contacts > Default Contact Book > Choose the one which should be read-only

2. Create a new contact in iPhone address book

3. Save it.

4. Every other user who has access to this CardDav repository sees this contact.

Log entries

Nextcloud

Please provide the log entries from your Nextcloud log that are generated during the time of problem (via the Copy raw option from Administration settings->Logging screen or from your nextcloud.log located in your data directory). Feel free to use a pastebin/gist service if necessary.

PASTE HERE

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Web server / Reverse Proxy

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Configuration

Nextcloud

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PASTE HERE

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The output of occ app:list (if possible).

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Few screenshots:

Option to be able to edit is unchecked

This is the list where users are adding their contact, even if it should be blocked

I don’t see any “Contats” book anywhere to find these 48 entries.

Same bug has been reported on GitHub’s issues list for Contacts application: iPhones creating contacts via CardDav · Issue #4786 · nextcloud/contacts

[tflidd]

Changing the read-only address book, that just works through iOS, or via web-interface as well?