OC\Files\Cache\Cache::get can return string|false|null, not just string|false.

- #26270 added handling of false, but null is needed too.
- Well, or we change the default $resullt to false, but I'm not sure if that has other ramifications and the real need here is to simply catch situations where the cache source storage path is not valid for whatever reason

Related: #19009

Signed-off-by: Josh Richards <josh.t.richards@gmail.com>

Co-authored-by: Git'Fellow <12234510+solracsf@users.noreply.github.com>
Signed-off-by: John Molakvoæ <skjnldsv@users.noreply.github.com>

Signed-off-by: Daniel Kesselberg <mail@danielkesselberg.de>

Signed-off-by: Anna Larch <anna@nextcloud.com>

Signed-off-by: Joas Schilling <coding@schilljs.com>

Signed-off-by: Daniel Kesselberg <mail@danielkesselberg.de>

Signed-off-by: Nextcloud bot <bot@nextcloud.com>

If 'verify_bucket_exists' is set to false in the config.php s3 configuration, it's supposed to avoid
verifying that the bucket exists. However empty(falsy) will  always return true, so this condition
would not work.

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

Signed-off-by: Nextcloud bot <bot@nextcloud.com>

Signed-off-by: Nextcloud bot <bot@nextcloud.com>

Signed-off-by: Nextcloud bot <bot@nextcloud.com>

Signed-off-by: Nextcloud bot <bot@nextcloud.com>

Signed-off-by: John Molakvoæ <skjnldsv@protonmail.com>

this way we only have to determine the share permissions once

Signed-off-by: Robin Appelman <robin@icewind.nl>

Signed-off-by: Robin Appelman <robin@icewind.nl>

Signed-off-by: Daniel Kesselberg <mail@danielkesselberg.de>

Signed-off-by: Nextcloud bot <bot@nextcloud.com>

[stable26] Catch more invalid cache source storage paths

[stable26] fix: close cursor after reading the invitation

[stable26] fix(s3): fix handling verify_bucket_exists parameter

[26] move share permission logic to storage wrapper

…logging

[stable26] Do not log passwords in debug mode

[stable26] fix(cache): Remove displayname cache entry on delete

[stable26] feat: add switch to disable dns pinning