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Filter libusb devices early in enumeration

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Some device drivers crash if you query things like manufacturer and product name, so make sure we only touch devices that we're really interested in.
This commit is contained in:
Sam Lantinga
2025-12-30 10:35:32 -08:00
parent 95ac0ff4d6
commit d33642b710
8 changed files with 16 additions and 42 deletions
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44
src/hidapi/SDL_hidapi.c
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@@ -540,8 +540,8 @@ static void HIDAPI_ShutdownDiscovery(void)
// Platform HIDAPI Implementation
#define HIDAPI_USING_SDL_RUNTIME
#define HIDAPI_IGNORE_DEVICE(BUS, VID, PID, USAGE_PAGE, USAGE) \
SDL_HIDAPI_ShouldIgnoreDevice(BUS, VID, PID, USAGE_PAGE, USAGE)
#define HIDAPI_IGNORE_DEVICE(BUS, VID, PID, USAGE_PAGE, USAGE, LIBUSB) \
SDL_HIDAPI_ShouldIgnoreDevice(BUS, VID, PID, USAGE_PAGE, USAGE, LIBUSB)
struct PLATFORM_hid_device_;
typedef struct PLATFORM_hid_device_ PLATFORM_hid_device;
@@ -1049,8 +1049,14 @@ static void SDLCALL IgnoredDevicesChanged(void *userdata, const char *name, cons
}
}
bool SDL_HIDAPI_ShouldIgnoreDevice(int bus, Uint16 vendor_id, Uint16 product_id, Uint16 usage_page, Uint16 usage)
bool SDL_HIDAPI_ShouldIgnoreDevice(int bus, Uint16 vendor_id, Uint16 product_id, Uint16 usage_page, Uint16 usage, bool libusb)
{
#ifdef HAVE_LIBUSB
if (libusb && use_libusb_whitelist && !IsInWhitelist(vendor_id, product_id)) {
return true;
}
#endif
// See if there are any devices we should skip in enumeration
if (SDL_hidapi_only_controllers && usage_page) {
if (vendor_id == USB_VENDOR_VALVE) {
@@ -1290,34 +1296,6 @@ static void RemoveDeviceFromEnumeration(const char *driver_name, struct hid_devi
}
#endif // HAVE_LIBUSB || HAVE_PLATFORM_BACKEND
#ifdef HAVE_LIBUSB
static void RemoveNonWhitelistedDevicesFromEnumeration(struct hid_device_info **devs, void (*free_device_info)(struct hid_device_info *))
{
struct hid_device_info *last = NULL, *curr, *next;
for (curr = *devs; curr; curr = next) {
next = curr->next;
if (!IsInWhitelist(curr->vendor_id, curr->product_id)) {
#ifdef DEBUG_HIDAPI
SDL_Log("Device was not in libusb whitelist, skipping: %ls %ls 0x%.4hx/0x%.4hx/%d",
curr->manufacturer_string, curr->product_string, curr->vendor_id, curr->product_id, curr->interface_number);
#endif
if (last) {
last->next = next;
} else {
*devs = next;
}
curr->next = NULL;
free_device_info(curr);
continue;
}
last = curr;
}
}
#endif // HAVE_LIBUSB
struct SDL_hid_device_info *SDL_hid_enumerate(unsigned short vendor_id, unsigned short product_id)
{
struct hid_device_info *driver_devs = NULL;
@@ -1338,10 +1316,6 @@ struct SDL_hid_device_info *SDL_hid_enumerate(unsigned short vendor_id, unsigned
#ifdef HAVE_LIBUSB
if (libusb_ctx) {
usb_devs = LIBUSB_hid_enumerate(vendor_id, product_id);
if (use_libusb_whitelist) {
RemoveNonWhitelistedDevicesFromEnumeration(&usb_devs, LIBUSB_hid_free_enumeration);
}
}
#endif // HAVE_LIBUSB