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hid: Only enumerate IOHIDDevices that are likely to be joysticks 

Touching HID devices with keyboard usages will trigger a keyboard capture
permission prompt on macOS 11+. See #4887

Like the IOKit joystick backend, we accept HID devices that have joystick,
gamepad, or multi-axis controller usages. We also allow the Valve VID for
the Steam Controller, just like the Windows HIDAPI implementation does.
main
Cameron Gutman 2021-11-20 13:13:17 -06:00
parent 23b7bdef87
commit db60b27188
1 changed files with 71 additions and 3 deletions
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74
src/hidapi/mac/hid.c
View File

@ -33,6 +33,8 @@
#include "../hidapi/hidapi.h"
#define VALVE_USB_VID 0x28DE
/* Barrier implementation because Mac OSX doesn't have pthread_barrier.
It also doesn't have clock_gettime(). So much for POSIX and SUSv2.
This implementation came from Brent Priddy and was posted on
@ -399,20 +401,86 @@ static void hid_device_removal_callback(void *context, IOReturn result,
}
}
static CFDictionaryRef
create_usage_match(const UInt32 page, const UInt32 usage, int *okay)
{
CFDictionaryRef retval = NULL;
CFNumberRef pageNumRef = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &page);
CFNumberRef usageNumRef = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &usage);
const void *keys[2] = { (void *) CFSTR(kIOHIDDeviceUsagePageKey), (void *) CFSTR(kIOHIDDeviceUsageKey) };
const void *vals[2] = { (void *) pageNumRef, (void *) usageNumRef };
if (pageNumRef && usageNumRef) {
retval = CFDictionaryCreate(kCFAllocatorDefault, keys, vals, 2, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
}
if (pageNumRef) {
CFRelease(pageNumRef);
}
if (usageNumRef) {
CFRelease(usageNumRef);
}
if (!retval) {
*okay = 0;
}
return retval;
}
static CFDictionaryRef
create_vendor_match(const UInt32 vendor, int *okay)
{
CFDictionaryRef retval = NULL;
CFNumberRef vidNumRef = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &vendor);
const void *keys[1] = { (void *) CFSTR(kIOHIDVendorIDKey) };
const void *vals[1] = { (void *) vidNumRef };
if (vidNumRef) {
retval = CFDictionaryCreate(kCFAllocatorDefault, keys, vals, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
CFRelease(vidNumRef);
}
if (!retval) {
*okay = 0;
}
return retval;
}
/* Initialize the IOHIDManager. Return 0 for success and -1 for failure. */
static int init_hid_manager(void)
{
int okay = 1;
const void *vals[] = {
(void *) create_usage_match(kHIDPage_GenericDesktop, kHIDUsage_GD_Joystick, &okay),
(void *) create_usage_match(kHIDPage_GenericDesktop, kHIDUsage_GD_GamePad, &okay),
(void *) create_usage_match(kHIDPage_GenericDesktop, kHIDUsage_GD_MultiAxisController, &okay),
(void *) create_vendor_match(VALVE_USB_VID, &okay),
};
const size_t numElements = SDL_arraysize(vals);
CFArrayRef matchingArray = okay ? CFArrayCreate(kCFAllocatorDefault, vals, numElements, &kCFTypeArrayCallBacks) : NULL;
size_t i;
for (i = 0; i < numElements; i++) {
if (vals[i]) {
CFRelease((CFTypeRef) vals[i]);
}
}
/* Initialize all the HID Manager Objects */
hid_mgr = IOHIDManagerCreate(kCFAllocatorDefault, kIOHIDOptionsTypeNone);
if (hid_mgr) {
IOHIDManagerSetDeviceMatching(hid_mgr, NULL);
IOHIDManagerSetDeviceMatchingMultiple(hid_mgr, matchingArray);
IOHIDManagerScheduleWithRunLoop(hid_mgr, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
IOHIDManagerRegisterDeviceRemovalCallback(hid_mgr, hid_device_removal_callback, NULL);
return 0;
}
return -1;
if (matchingArray != NULL) {
CFRelease(matchingArray);
}
return hid_mgr ? 0 : -1;
}
/* Initialize the IOHIDManager if necessary. This is the public function, and