Add --rpc command to manually specify the location of discord-ipc-0

bridge.c

@@ -164,13 +164,26 @@ static inline int sys_connect(int s, caddr_t name, socklen_t namelen)
 
 char *native_getenv(const char *name)
 {
+	static char lpBuffer[512];
+	DWORD ret = GetEnvironmentVariable("BRIDGE_RPC_PATH", lpBuffer, sizeof(lpBuffer));
+	if (ret != 0)
+		return lpBuffer;
+
 	if (!IsLinux)
 	{
 		char *value = getenv(name);
 		if (value == NULL)
 		{
 			print("Failed to get environment variable: %s\n", name);
-			return NULL;
+
+			/* Use GetEnvironmentVariable as a last resort */
+			DWORD ret = GetEnvironmentVariable(name, lpBuffer, sizeof(lpBuffer));
+			if (ret == 0)
+			{
+				print("GetEnvironmentVariable(\"%s\", ...) failed: %d\n", name, ret);
+				return NULL;
+			}
+			return lpBuffer;
 		}
 		return value;
 	}

main.c

@@ -259,6 +259,19 @@ void HandleArguments(int argc, char *argv[])
 		RemoveService();
 		ExitProcess(0);
 	}
+	else if (strcmp(argv[1], "--rpc") == 0)
+	{
+		if (argc < 3)
+		{
+			print("No directory provided\n");
+			ExitProcess(1);
+		}
+
+		SetEnvironmentVariable("BRIDGE_RPC_PATH", argv[2]);
+		print("BRIDGE_RPC_PATH has been set to \"%s\"\n", argv[2]);
+		CreateBridge();
+		ExitProcess(0);
+	}
 	else if (strcmp(argv[1], "--help") == 0)
 	{
 		printf("Usage:\n");
@@ -269,17 +282,21 @@ void HandleArguments(int argc, char *argv[])
 
 		printf("  --install      Install service\n");
 		printf("        This will copy the binary to C:\\windows\\bridge.exe and register it as a service\n\n");
-		printf("  --uninstall    Uninstall service\n");
 
+		printf("  --uninstall    Uninstall service\n");
 		printf("        This will remove the service and delete C:\\windows\\bridge.exe\n\n");
-		printf("  --steam        Reserved for Steam\n");
 
+		printf("  --steam        Reserved for Steam\n");
 		printf("        This will start the service and exit (used with bridge.sh)\n\n");
-		printf("  --no-service   Do not run as service\n");
 
+		printf("  --no-service   Do not run as service\n");
 		printf("        (only for --steam)\n\n");
+
 		printf("  --service      Reserved for service\n\n");
 
+		printf("  --rpc <dir>    Set RPC_PATH environment variable\n");
+		printf("        This is used to specify the directory where 'discord-ipc-0' is located\n\n");
+
 		printf("Note: If no arguments are provided, the GUI will be shown instead\n");
 		ExitProcess(0);
 	}