Add a warning for large values in "calendar download restrictions in days"

[maxmeyer]

Recently, I installed davx5 on my wife's phone. To make sure she gets all events synced, I entered a large number in the calendar download restrictions – about 9999999 days.

The result of this configuration was an error on my Nextcloud instance:

Sabre\VObject\InvalidDataException: The supplied iCalendar datetime value is incorrect: 253570519T103945Z

Browsing the source code off the library “https://github.com/sabre-io/vobject/blob/master/lib/DateTimeParser.php” used, I found this regex:

/^([0-9]{4})([0-1][0-9])([0-3][0-9])T([0-2][0-9])([0-5][0-9])([0-5][0-9])([Z]?)$/

It would be great to get a warning, if a user configures a ridiculous high value which does not match the regex above.

[rfc2822]

Hi,

Interesting; in theory it shouldn't make a problem, but some validation won't be bad. Is there a reason why you didn't leave the field empty? In this case all events are fetched, too (there should be a text mentioning that + mentioned in the manual).

[maxmeyer]

Is there a reason why you didn't leave the field empty?

Shame on me. I oversaw the message above the input field. Thanks for bringing that to my attention.