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Make sure to only access valid buffers in VPADRead and WPADRead hooks

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This commit is contained in:
Maschell 2024-07-05 16:00:16 +02:00
parent 4c1131b0bf
commit c47c79e771
1 changed files with 9 additions and 5 deletions
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14
source/patcher/hooks_patcher_static.cpp
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@ -80,20 +80,25 @@ DECL_FUNCTION(void, OSReleaseForeground) {
real_OSReleaseForeground(); real_OSReleaseForeground();
} }
DECL_FUNCTION(int32_t, VPADRead, int32_t chan, VPADStatus *buffer, uint32_t buffer_size, int32_t *error) { DECL_FUNCTION(int32_t, VPADRead, int32_t chan, VPADStatus *buffer, uint32_t buffer_size, VPADReadError *error) {
if (sConfigMenuOpened) { if (sConfigMenuOpened) {
// Ignore reading vpad input only from other threads if the config menu is opened // Ignore reading vpad input only from other threads if the config menu is opened
if (OSGetCurrentThread() != gOnlyAcceptFromThread) { if (OSGetCurrentThread() != gOnlyAcceptFromThread) {
return 0; return 0;
} }
} }
int32_t result = real_VPADRead(chan, buffer, buffer_size, error); VPADReadError real_error = VPAD_READ_SUCCESS;
int32_t result = real_VPADRead(chan, buffer, buffer_size, &real_error);
if (result > 0 && real_error == VPAD_READ_SUCCESS && buffer && ((buffer[0].hold & 0xFFFFF) == (VPAD_BUTTON_L | VPAD_BUTTON_DOWN | VPAD_BUTTON_MINUS)) && sVpadPressCooldown == 0 && !sConfigMenuOpened) {
if (result > 0 && ((buffer[0].hold & 0xFFFFF) == (VPAD_BUTTON_L | VPAD_BUTTON_DOWN | VPAD_BUTTON_MINUS)) && sVpadPressCooldown == 0 && !sConfigMenuOpened) {
sWantsToOpenConfigMenu = true; sWantsToOpenConfigMenu = true;
sVpadPressCooldown = 0x3C; sVpadPressCooldown = 0x3C;
return 0; return 0;
} }
if (error) {
*error = real_error;
}
if (sVpadPressCooldown > 0) { if (sVpadPressCooldown > 0) {
sVpadPressCooldown--; sVpadPressCooldown--;
@ -104,8 +109,7 @@ DECL_FUNCTION(int32_t, VPADRead, int32_t chan, VPADStatus *buffer, uint32_t buff
DECL_FUNCTION(void, WPADRead, WPADChan chan, WPADStatusProController *data) { DECL_FUNCTION(void, WPADRead, WPADChan chan, WPADStatusProController *data) {
real_WPADRead(chan, data); real_WPADRead(chan, data);
if (!sConfigMenuOpened && data && data[0].err == 0) {
if (!sConfigMenuOpened && data[0].err == 0) {
if (data[0].extensionType != 0xFF) { if (data[0].extensionType != 0xFF) {
if (data[0].extensionType == WPAD_EXT_CORE || data[0].extensionType == WPAD_EXT_NUNCHUK) { if (data[0].extensionType == WPAD_EXT_CORE || data[0].extensionType == WPAD_EXT_NUNCHUK) {
// button data is in the first 2 bytes for wiimotes // button data is in the first 2 bytes for wiimotes