New subject: [Bug 50153] HID doesn't work on macOS Catalina and Big Sur unless "Input Monitoring" permission is granted

20 Nov 2020


      https://bugs.winehq.org/show_bug.cgi?id=50153
Bug ID: 50153
           Summary: HID doesn't work on macOS Catalina and Big Sur unless
                    "Input Monitoring" permission is granted
           Product: Wine
           Version: 5.22
          Hardware: x86-64
                OS: Mac OS X
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: hid
          Assignee: wine-bugs@winehq.org
          Reporter: bshanks@codeweavers.com
On macOS Catalina and Big Sur, if the user-level app (usually Terminal) doesn't
have permission granted for "Input Monitoring" in System Preferences ->
Security & Privacy, the IOHID support in winebus will fail with 'Couldn't open
IOHIDManager.'.
And when Wine is quitting and the driver unloads, it tries to call the
IOHIDManager that was already released, causing a crash.
IOHIDManagerOpen() is failing with kIOReturnNotPermitted because it actually
tries to "open" every matching device, which is every HID device on the system,
including the keyboard (which requires Input Monitoring permission). 
(Yes, this API design is very confusing, and poorly documented).
Better is to open individual devices instead, so even if the keyboard fails to
open other devices will still work.
Also it would be ideal to not "open" a device until it's necessary, so there
won't be a permission prompt unless a Windows app actually wants to read from
the keyboard. Currently some part of Wine's HID stack requests input reports
when the device gets enumerated, triggering the permission prompt.
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[Bug 50153] New: HID doesn't work on macOS Catalina and Big Sur unless "Input Monitoring" permission is granted