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Make sure we match the same way when adding a mapping and looking up a mapping 

Fixes https://github.com/libsdl-org/SDL/issues/6898

(cherry picked from commit 3db9112ef4cbb936b11f941f8a98c1704e37e140)
This commit is contained in:
Sam Lantinga 2022-12-27 12:14:43 -08:00 committed by Ozkan Sezer
parent 2462262e0c
commit 278c78e34c
1 changed files with 14 additions and 7 deletions
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21
src/joystick/SDL_gamecontroller.c
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@ -752,9 +752,12 @@ static ControllerMapping_t *SDL_PrivateMatchControllerMappingForGUID(SDL_Joystic
if (SDL_memcmp(&guid, &mapping_guid, sizeof(guid)) == 0) {
Uint16 mapping_crc = 0;
const char *crc_string = SDL_strstr(mapping->mapping, SDL_CONTROLLER_CRC_FIELD);
if (crc_string) {
mapping_crc = (Uint16)SDL_strtol(crc_string + SDL_CONTROLLER_CRC_FIELD_SIZE, NULL, 16);
if (match_crc) {
const char *crc_string = SDL_strstr(mapping->mapping, SDL_CONTROLLER_CRC_FIELD);
if (crc_string) {
mapping_crc = (Uint16)SDL_strtol(crc_string + SDL_CONTROLLER_CRC_FIELD_SIZE, NULL, 16);
}
}
if (crc == mapping_crc) {
return mapping;
@ -767,7 +770,7 @@ static ControllerMapping_t *SDL_PrivateMatchControllerMappingForGUID(SDL_Joystic
/*
* Helper function to scan the mappings database for a controller with the specified GUID
*/
static ControllerMapping_t *SDL_PrivateGetControllerMappingForGUID(SDL_JoystickGUID guid)
static ControllerMapping_t *SDL_PrivateGetControllerMappingForGUID(SDL_JoystickGUID guid, SDL_bool create_mapping)
{
ControllerMapping_t *mapping;
Uint16 vendor, product, crc;
@ -802,6 +805,10 @@ static ControllerMapping_t *SDL_PrivateGetControllerMappingForGUID(SDL_JoystickG
}
}
if (!create_mapping) {
return NULL;
}
#if SDL_JOYSTICK_XINPUT
if (SDL_IsJoystickXInput(guid)) {
/* This is an XInput device */
@ -1269,7 +1276,7 @@ SDL_PrivateAddMappingForGUID(SDL_JoystickGUID jGUID, const char *mappingString,
}
}
pControllerMapping = SDL_PrivateMatchControllerMappingForGUID(jGUID, SDL_TRUE, SDL_TRUE);
pControllerMapping = SDL_PrivateGetControllerMappingForGUID(jGUID, SDL_FALSE);
if (pControllerMapping) {
/* Only overwrite the mapping if the priority is the same or higher. */
if (pControllerMapping->priority <= priority) {
@ -1329,7 +1336,7 @@ static ControllerMapping_t *SDL_PrivateGetControllerMappingForNameAndGUID(const
{
ControllerMapping_t *mapping;
mapping = SDL_PrivateGetControllerMappingForGUID(guid);
mapping = SDL_PrivateGetControllerMappingForGUID(guid, SDL_TRUE);
#ifdef __LINUX__
if (!mapping && name) {
if (SDL_strstr(name, "Xbox 360 Wireless Receiver")) {
@ -1744,7 +1751,7 @@ SDL_GameControllerMappingForIndex(int mapping_index)
char *
SDL_GameControllerMappingForGUID(SDL_JoystickGUID guid)
{
ControllerMapping_t *mapping = SDL_PrivateGetControllerMappingForGUID(guid);
ControllerMapping_t *mapping = SDL_PrivateGetControllerMappingForGUID(guid, SDL_TRUE);
if (mapping) {
return CreateMappingString(mapping, guid);
} else {