Sanitize the iCal URL before initializing #2607
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Description
localhostor127.0xURLs from being used for external calendar URLs.Types of changes
Bug fix (non-breaking change which fixes an issue)
How has this been tested?
Tested by running
nc -l 127.0.0.1 9000. Adding aEventsblock to the page, ticking offLink a calendarand adding the URLhttp://127.0.0.1:9000to the calendar URL and ensuring an error is returned.Checklist: