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Author: xaviergmail

main.cpp

@@ -0,0 +1,84 @@
+// Xavier Bergeron 2020 - https://github.com/xaviergmail/discordnotificationdebug
+// This program helps detect devices that cause false input events on Windows, breaking idle detection scripts that rely on GetLastInputInfo
+// I initially ran into this issue with the Discord Windows application. I assumed it used Electron's powerMonitor API (https://www.electronjs.org/docs/api/power-monitor)
+// After much digging around, I finally isolated the root of the issue to the underlying implementation in Chromium:
+// https://chromium.googlesource.com/chromium/src/+/refs/tags/89.0.4343.1/ui/base/idle/idle_win.cc
+//
+// In my case, the culprit was the JC-W01UWH Wii gamepad USB adapter commonly used by Guitar Hero / Clone Hero players.
+
+
+#include <iostream>
+#include <windows.h>
+
+// Taken directly from Chromium's implementation
+DWORD CalculateIdleTimeInternal() {
+	LASTINPUTINFO last_input_info = { 0 };
+	last_input_info.cbSize = sizeof(LASTINPUTINFO);
+	DWORD current_idle_time = 0;
+	if (::GetLastInputInfo(&last_input_info)) {
+		DWORD now = ::GetTickCount();
+		if (now < last_input_info.dwTime) {
+			// GetTickCount() wraps around every 49.7 days -- assume it wrapped just
+			// once.
+			const DWORD kMaxDWORD = static_cast<DWORD>(-1);
+			DWORD time_before_wrap = kMaxDWORD - last_input_info.dwTime;
+			DWORD time_after_wrap = now;
+			// The sum is always smaller than kMaxDWORD.
+			current_idle_time = time_before_wrap + time_after_wrap;
+		}
+		else {
+			current_idle_time = now - last_input_info.dwTime;
+		}
+		// Convert from ms to seconds.
+		current_idle_time /= 1000;
+	}
+	return current_idle_time;
+}
+
+void pause() {
+	std::cout << "Press Enter continue..." << std::flush;
+	getchar();
+	std::cout << "\n\n\n" << std::flush;
+}
+
+int main()
+{
+	std::cout
+		<< "DiscordNotificationDebug v1 written by Xavier Bergeron\n"
+		<< "https://github.com/xaviergmail/DiscordNotificationDebug/\n\n\n"
+		<< "If you are here, you are likely experiencing issues with discord\n"
+		<< "notifications not being sent to your mobile device regardless of\n"
+		<< "the \"Push Notification Inactive Timeout\" setting. Chances are\n"
+		<< "that you either have a program, driver or peripheral firing\n"
+		<< "phantom input events that get picked up by Windows as real user\n"
+		<< "input. This program will help you isolate the cause of the problem.\n\n";
+	pause();
+
+	std::cout
+		<< "You should only be getting the \"System was idle for X seconds\" message\n"
+		<< "when using your keyboard or moving your mouse. If it happens without you\n"
+		<< "touching anything, there is something problematic causing phantom inputs.\n\n"
+		<< "Pay close attention to the console output. You want the counter to continuously\n"
+		<< "count upwards and it should ONLY reset if you touch your mouse or keyboard.\n"
+		<< "If it never counts up or resets at random times without you touching anything,\n"
+		<< "you may be victim of phantom inputs. If that's the case, start by unplugging\n"
+		<< "peripherals such as mice and keyboards followed by all other USB devices.\n"
+		<< "If that doesn't work, start closing all programs from the system tray\n"
+		<< "then move on to killing processes from task manager and stopping services.\n"
+		<< "If all else fails, update your drivers and/or try isolating them.\n\n";
+	pause();
+
+	int i = 0;
+	const char* loading = "|/-\\";
+	while (true) {
+		DWORD delta = CalculateIdleTimeInternal();
+		char witness = loading[i++ % 4];
+		if (delta <= 1) {
+			printf("%c System is not idle!\n", witness);
+		}
+		else {
+			printf("%c System has been idle for %d seconds.\n", witness, delta);
+		}
+		Sleep(1000);
+	}
+}