예제 #1
0
파일: socket.c 프로젝트: Skif-off/geany
/* (Unix domain) socket support to replace the old FIFO code
 * (taken from Sylpheed, thanks)
 * Returns the created socket, -1 if an error occurred or -2 if another socket exists and files
 * were sent to it. */
gint socket_init(gint argc, gchar **argv)
{
	gint sock;
#ifdef G_OS_WIN32
	HANDLE hmutex;
	HWND hwnd;
	socket_init_win32();
	hmutex = CreateMutexA(NULL, FALSE, "Geany");
	if (! hmutex)
	{
		geany_debug("cannot create Mutex\n");
		return -1;
	}
	if (GetLastError() != ERROR_ALREADY_EXISTS)
	{
		/* To support multiple instances with different configuration directories (as we do on
		 * non-Windows systems) we would need to use different port number s but it might be
		 * difficult to get a port number which is unique for a configuration directory (path)
		 * and which is unused. This port number has to be guessed by the first and new instance
		 * and the only data is the configuration directory path.
		 * For now we use one port number, that is we support only one instance at all. */
		sock = socket_fd_open_inet(REMOTE_CMD_PORT);
		if (sock < 0)
			return -1;
		return sock;
	}

	sock = socket_fd_connect_inet(REMOTE_CMD_PORT);
	if (sock < 0)
		return -1;
#else
	gchar *display_name = NULL;
	const gchar *hostname = g_get_host_name();
	GdkDisplay *display = gdk_display_get_default();
	gchar *p;

	/* On OS X with quartz backend gdk_display_get_name() returns hostname
	 * using [NSHost currentHost] (it could return more or less whatever string
	 * as display name is a X11 specific thing). This call can lead to network
	 * query and block for several seconds so better skip it. */
#ifndef GDK_WINDOWING_QUARTZ
	if (display != NULL)
		display_name = g_strdup(gdk_display_get_name(display));
#endif

	if (display_name == NULL)
		display_name = g_strdup("NODISPLAY");

	/* these lines are taken from dcopc.c in kdelibs */
	if ((p = strrchr(display_name, '.')) > strrchr(display_name, ':') && p != NULL)
		*p = '\0';
	/* remove characters that may not be acceptable in a filename */
	for (p = display_name; *p; p++)
	{
		if (*p == ':' || *p == '/')
			*p = '_';
	}

	if (socket_info.file_name == NULL)
		socket_info.file_name = g_strdup_printf("%s%cgeany_socket_%s_%s",
			app->configdir, G_DIR_SEPARATOR, hostname, display_name);

	g_free(display_name);

	/* check whether the real user id is the same as this of the socket file */
	check_socket_permissions();

	sock = socket_fd_connect_unix(socket_info.file_name);
	if (sock < 0)
	{
		remove_socket_link_full(); /* deletes the socket file and the symlink */
		return socket_fd_open_unix(socket_info.file_name);
	}
#endif

	/* remote command mode, here we have another running instance and want to use it */

	/* now we send the command line args */
	if (argc > 1)
	{
#ifdef G_OS_WIN32
		/* first we send a request to retrieve the window handle and focus the window */
		socket_fd_write_all(sock, "window\n", 7);
		if (socket_fd_read(sock, (gchar *)&hwnd, sizeof(hwnd)) == sizeof(hwnd))
			SetForegroundWindow(hwnd);
#endif

		send_open_command(sock, argc, argv);
	}

	if (cl_options.list_documents)
	{
		socket_get_document_list(sock);
	}

	socket_fd_close(sock);
	return -2;
}
예제 #2
0
/* (Unix domain) socket support to replace the old FIFO code
 * (taken from Sylpheed, thanks)
 * Returns the created socket, -1 if an error occurred or -2 if another socket exists and files
 * were sent to it. */
gint socket_init(gint argc, gchar **argv)
{
	gint sock;
#ifdef G_OS_WIN32
	HANDLE hmutex;
	HWND hwnd;
	socket_init_win32();
	hmutex = CreateMutexA(NULL, FALSE, "Geany");
	if (! hmutex)
	{
		geany_debug("cannot create Mutex\n");
		return -1;
	}
	if (GetLastError() != ERROR_ALREADY_EXISTS)
	{
		/* To support multiple instances with different configuration directories (as we do on
		 * non-Windows systems) we would need to use different port number s but it might be
		 * difficult to get a port number which is unique for a configuration directory (path)
		 * and which is unused. This port number has to be guessed by the first and new instance
		 * and the only data is the configuration directory path.
		 * For now we use one port number, that is we support only one instance at all. */
		sock = socket_fd_open_inet(REMOTE_CMD_PORT);
		if (sock < 0)
			return 0;
		return sock;
	}

	sock = socket_fd_connect_inet(REMOTE_CMD_PORT);
	if (sock < 0)
		return -1;
#else
	gchar *display_name = gdk_get_display();
	gchar *hostname = utils_get_hostname();
	gchar *p;

	if (display_name == NULL)
		display_name = g_strdup("NODISPLAY");

	/* these lines are taken from dcopc.c in kdelibs */
	if ((p = strrchr(display_name, '.')) > strrchr(display_name, ':') && p != NULL)
		*p = '\0';
	while ((p = strchr(display_name, ':')) != NULL)
		*p = '_';

	if (socket_info.file_name == NULL)
		socket_info.file_name = g_strdup_printf("%s%cgeany_socket_%s_%s",
			app->configdir, G_DIR_SEPARATOR, hostname, display_name);

	g_free(display_name);
	g_free(hostname);

	/* check whether the real user id is the same as this of the socket file */
	check_socket_permissions();

	sock = socket_fd_connect_unix(socket_info.file_name);
	if (sock < 0)
	{
		remove_socket_link_full(); /* deletes the socket file and the symlink */
		return socket_fd_open_unix(socket_info.file_name);
	}
#endif

	/* remote command mode, here we have another running instance and want to use it */

#ifdef G_OS_WIN32
	/* first we send a request to retrieve the window handle and focus the window */
	socket_fd_write_all(sock, "window\n", 7);
	if (socket_fd_read(sock, (gchar *)&hwnd, sizeof(hwnd)) == sizeof(hwnd))
		SetForegroundWindow(hwnd);
#endif
	/* now we send the command line args */
	if (argc > 1)
	{
		send_open_command(sock, argc, argv);
	}

	if (cl_options.list_documents)
	{
		socket_get_document_list(sock);
	}

	socket_fd_close(sock);
	return -2;
}