Initial commit

Makefile

@@ -0,0 +1,6 @@
+all:
+	gcc xoff.c -ggdb -o xoff_debug
+release:
+	gcc xoff.c -flto -O3 -mwindows -o xoff
+clean:
+	rm *.exe

xoff.c

@@ -0,0 +1,84 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <windows.h>
+#include <time.h>
+
+typedef enum {
+	DLL_LOAD,
+	GET_FUNC_POWER_OFF,
+	GET_FUNC_GET_STATE,
+	DEVICE_NOT_CONNECTED
+} FAIL_CODES;
+
+// Hidden struct in xinput dll for getting guide button input
+typedef struct {
+    DWORD dwPacketNumber;
+    WORD wButtons;
+    BYTE bLeftTrigger;
+    BYTE bRightTrigger;
+    SHORT sThumbLX;
+    SHORT sThumbLY;
+    SHORT sThumbRX;
+    SHORT sThumbRY;
+} XINPUT_GAMEPAD_SECRET;
+
+
+typedef int (*POWER_OFF_T)(int);
+typedef DWORD (*XInputGetState_T)(DWORD, XINPUT_GAMEPAD_SECRET*);
+HANDLE dll;
+
+void on_exit() {
+	if (dll) FreeLibrary(dll);
+}
+
+void err_and_exit(HANDLE dll, FAIL_CODES code) {
+	switch(code) {
+		case DEVICE_NOT_CONNECTED:
+			printf("No controller found!\n");
+			break;
+		case GET_FUNC_GET_STATE:
+			printf("Unable to find \"XInputGetState\" function!\n");
+			break;
+		case GET_FUNC_POWER_OFF:
+			printf("Unable to find the poweroff function!\n");
+			break;
+		case DLL_LOAD:
+			printf("Unable to load Xinput dll!\n");
+			break;
+		default:
+			printf("Unknown error! :(\n");
+	}
+	exit(-1);
+}
+
+int main() {
+	atexit(on_exit);
+	dll = LoadLibrary("XInput1_3");
+	if (!dll) err_and_exit(dll, DLL_LOAD);
+
+	POWER_OFF_T power_off = (POWER_OFF_T) GetProcAddress(dll, MAKEINTRESOURCE(103));
+	// This is a special hidden function for getting the guide button
+	XInputGetState_T xinput_get_state = (XInputGetState_T) GetProcAddress(dll, MAKEINTRESOURCE(100));
+	if (!power_off) err_and_exit(dll, GET_FUNC_POWER_OFF);
+	if (!xinput_get_state) err_and_exit(dll, GET_FUNC_GET_STATE);
+
+	XINPUT_GAMEPAD_SECRET x_state = {0};
+	int wasPressed = 0;
+	while(1) {
+		if (xinput_get_state(0, &x_state) == ERROR_DEVICE_NOT_CONNECTED) {
+			Sleep(1);
+			continue;
+		}
+		if (x_state.wButtons == 0x00400) {
+			if (wasPressed) {
+				wasPressed = 0;
+				power_off(0);
+				memset(&x_state, 0, sizeof(XINPUT_GAMEPAD_SECRET));
+			} else {
+				wasPressed = 1;
+			}
+		}
+		Sleep(2000);
+	}
+	return 0;
+}