HIDAPI joystick drivers may call HIDAPI_JoystickDisconnected() in their
UpdateDevice() function during HIDAPI_JoystickOpen(). If they do this
today, the opened joystick will end up partially initialized (no name,
path, mapping GUID, etc.) because HIDAPI_GetDeviceByIndex() will no
longer be able to find the SDL_HIDAPI_Device for the removed joystick.
Worse still, joystick->hwdata->device becomes a dangling freed pointer
the next time HIDAPI_UpdateDeviceList() is called. This leads to a UAF
when the application or SDL calls SDL_JoystickClose() on this joystick.
Fix all this by checking if the device no longer has any associated
joysticks after calling UpdateDevice() and failing the open call if so.
(cherry picked from commit 435e7ce663)
This fixes the serial number for Nintendo Switch Pro, which is queried from the hardware in device initialization, and was later clobbered by the USB string which isn't correct.
(cherry picked from commit 2042e9c4e3)
This should never happen, but we're seeing it in the wild, so make sure that we can never call into a NULL device driver.
(cherry picked from commit e13b74ccf0)
On Windows the main thread can be enumerating DirectInput devices while the Windows.Gaming.Input thread is calling back with a new controller available, and in this case HIDAPI_IsDevicePresent() returned false since the controller initialization hadn't completed yet, creating a duplicate controller.
Fixes https://github.com/libsdl-org/SDL/issues/7304
(cherry picked from commit ece8a7bb8e)
The annotations have been added to SDL_mutex.h and have been made public so applications can enable this for their own code.
Clang assumes that locking and unlocking can't fail, but SDL has the concept of a NULL mutex, so the mutex functions have been changed not to report errors if a mutex hasn't been initialized. We do have mutexes that might be accessed when they are NULL, notably in the event system, so this is an important change.
This commit cleans up a bunch of rare race conditions in the joystick and game controller code so now everything should be completely protected by the joystick lock.
To test this, change the compiler to "clang -Wthread-safety -Werror=thread-safety -DSDL_THREAD_SAFETY_ANALYSIS"
I updated .clang-format and ran clang-format 14 over the src and test directories to standardize the code base.
In general I let clang-format have it's way, and added markup to prevent formatting of code that would break or be completely unreadable if formatted.
The script I ran for the src directory is added as build-scripts/clang-format-src.sh
This fixes:
#6592#6593#6594
(cherry picked from commit 5750bcb174)
* Add braces after if conditions
* More add braces after if conditions
* Add braces after while() conditions
* Fix compilation because of macro being modified
* Add braces to for loop
* Add braces after if/goto
* Move comments up
* Remove extra () in the 'return ...;' statements
* More remove extra () in the 'return ...;' statements
* More remove extra () in the 'return ...;' statements after merge
* Fix inconsistent patterns are xxx == NULL vs !xxx
* More "{}" for "if() break;" and "if() continue;"
* More "{}" after if() short statement
* More "{}" after "if () return;" statement
* More fix inconsistent patterns are xxx == NULL vs !xxx
* Revert some modificaion on SDL_RLEaccel.c
* SDL_RLEaccel: no short statement
* Cleanup 'if' where the bracket is in a new line
* Cleanup 'while' where the bracket is in a new line
* Cleanup 'for' where the bracket is in a new line
* Cleanup 'else' where the bracket is in a new line
(cherry picked from commit 6a2200823c to reduce conflicts merging between SDL2 and SDL3)
This works around udev event nodes arriving before hidraw nodes and the controller being opened twice - once using the Linux driver and once by the HIDAPI driver.
This also fixes a kernel panic on Steam Link hardware due to trying to open the hidraw device node too early.
A delay of 10 ms seems to be a good value, tested on Steam Link hardware.
Nintendo Switch controllers will automatically turn off Bluetooth when connected over USB, but this takes care of that a little more quickly.
PS4 and PS5 controllers will happily send reports over both Bluetooth and USB, so we'll prefer USB if connected and switch back to Bluetooth if USB is disconnected.
This prevents a number of issues where devices are enumerated but not actually able to be opened, like https://github.com/libsdl-org/SDL/issues/5781.
We currently leave the devices open, allowing us to more easily do controller feature detection, protocol negotiation, detect dropped Bluetooth connections, etc. with the expectation that the application is likely to open the controllers shortly.
These report their VID/PID as a Nintendo Switch Pro controller, but they are actually left/right Joy-Cons. We'll fix up the joystick GUID so applications can handle them appropriately.
Refactor the previous sandbox check in a standalone function that also
includes Snap support.
Signed-off-by: Ludovico de Nittis <ludovico.denittis@collabora.com>
