Allow autocomplete based on phone sync

[nickvergessen]

• Based on Provisioning API to IBootstrap #26029
• Store phonebook sync matches in a database
• Remove "known user" matches when the user changes their phone number
• Remove any matches when the user is deleted
• Add a config option to "Restrict username autocompletion to users with phone sync matches" in the sharing settings
  • (needs some thinking how we can phrase it so it works with the existing options in a good way)
• Respect that setting on the autocomplete endpoint.
• Write integration tests to assure this doesn't break

[ChristophWurst]

I squinted but the code looks fine

[PVince81]

👍 code looks fine with minor comments

and one thing that disturbed me most was the naming of $knownTo and $knownUser which are easy to mix up

[PVince81]

👍

[nickvergessen]

/backport to stable21

[backportbot-nextcloud]

The backport to stable21 failed. Please do this backport manually.

[skjnldsv]

@nickvergessen Documentation missing?

[nickvergessen]

How to upload your phone's addressbook? Or the admin setting?

[skjnldsv]

How to upload your phone's addressbook? Or the admin setting?

admin setting

server/apps/settings/lib/Settings/Admin/Sharing.php

Lines 88 to 94 in d9f8522

	'allowShareDialogUserEnumeration' => $this->config->getAppValue('core', 'shareapi_allow_share_dialog_user_enumeration', 'yes'),
	'restrictUserEnumerationToGroup' => $this->config->getAppValue('core', 'shareapi_restrict_user_enumeration_to_group', 'no'),
	'restrictUserEnumerationToPhone' => $this->config->getAppValue('core', 'shareapi_restrict_user_enumeration_to_phone', 'no'),
	'restrictUserEnumerationFullMatch' => $this->config->getAppValue('core', 'shareapi_restrict_user_enumeration_full_match', 'yes'),
	'restrictUserEnumerationFullMatchUserId' => $this->config->getAppValue('core', 'shareapi_restrict_user_enumeration_full_match_userid', 'yes'),
	'restrictUserEnumerationFullMatchEmail' => $this->config->getAppValue('core', 'shareapi_restrict_user_enumeration_full_match_email', 'yes'),
	'restrictUserEnumerationFullMatchIgnoreSecondDN' => $this->config->getAppValue('core', 'shareapi_restrict_user_enumeration_full_match_ignore_second_dn', 'no'),

[nickvergessen]

Added the new checkbox in nextcloud/documentation#11241 and updated the screenshot and labels that were brought in by other changes in the meantime