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namespace AstalIO {
public errordomain AppError {
NAME_OCCUPIED,
TAKEOVER_FAILED,
}
public interface Application : Object {
public abstract void quit() throws Error;
public abstract void inspector() throws Error;
public abstract void toggle_window(string window) throws Error;
public abstract string instance_name { owned get; construct set; }
public abstract void acquire_socket() throws Error;
public virtual void request(string msg, SocketConnection conn) throws Error {
write_sock.begin(conn, @"missing response implementation on $instance_name");
}
}
public SocketService acquire_socket(Application app, out string sock) throws Error {
var name = app.instance_name;
foreach (var instance in get_instances()) {
if (instance == name) {
throw new AppError.NAME_OCCUPIED(@"$name is occupied");
}
}
var rundir = Environment.get_user_runtime_dir();
var dir = @"$rundir/astal";
var path = @"$dir/$name.sock";
sock = path;
if (!FileUtils.test(dir, FileTest.IS_DIR)) {
File.new_for_path(path).make_directory_with_parents(null);
}
if (FileUtils.test(path, FileTest.EXISTS)) {
try {
File.new_for_path(path).delete(null);
} catch (Error err) {
throw new AppError.TAKEOVER_FAILED("could not delete previous socket");
}
}
var service = new SocketService();
service.add_address(
new UnixSocketAddress(path),
SocketType.STREAM,
SocketProtocol.DEFAULT,
null,
null
);
service.incoming.connect((conn) => {
read_sock.begin(conn, (_, res) => {
try {
string message = read_sock.end(res);
app.request(message != null ? message.strip() : "", conn);
} catch (Error err) {
critical(err.message);
}
});
return false;
});
return service;
}
public static List<string> get_instances() {
var list = new List<string>();
var prefix = "io.Astal.";
try {
DBusImpl dbus = Bus.get_proxy_sync(
BusType.SESSION,
"org.freedesktop.DBus",
"/org/freedesktop/DBus"
);
foreach (var busname in dbus.list_names()) {
if (busname.has_prefix(prefix))
list.append(busname.replace(prefix, ""));
}
} catch (Error err) {
critical(err.message);
}
return list;
}
public static void quit_instance(string instance) {
try {
IApplication proxy = Bus.get_proxy_sync(
BusType.SESSION,
"io.Astal." + instance,
"/io/Astal/Application"
);
proxy.quit();
} catch (Error err) {
critical(err.message);
}
}
public static void open_inspector(string instance) {
try {
IApplication proxy = Bus.get_proxy_sync(
BusType.SESSION,
"io.Astal." + instance,
"/io/Astal/Application"
);
proxy.inspector();
} catch (Error err) {
critical(err.message);
}
}
public static void toggle_window_by_name(string instance, string window) {
try {
IApplication proxy = Bus.get_proxy_sync(
BusType.SESSION,
"io.Astal." + instance,
"/io/Astal/Application"
);
proxy.toggle_window(window);
} catch (Error err) {
critical(err.message);
}
}
public static string send_message(string instance_name, string msg) {
var rundir = Environment.get_user_runtime_dir();
var socket_path = @"$rundir/astal/$instance_name.sock";
var client = new SocketClient();
try {
var conn = client.connect(new UnixSocketAddress(socket_path), null);
conn.output_stream.write(msg.concat("\x04").data);
var stream = new DataInputStream(conn.input_stream);
return stream.read_upto("\x04", -1, null, null);
} catch (Error err) {
printerr(err.message);
return "";
}
}
public async string read_sock(SocketConnection conn) throws IOError {
var stream = new DataInputStream(conn.input_stream);
return yield stream.read_upto_async("\x04", -1, Priority.DEFAULT, null, null);
}
public async void write_sock(SocketConnection conn, string response) throws IOError {
yield conn.output_stream.write_async(response.concat("\x04").data, Priority.DEFAULT);
}
[DBus (name="io.Astal.Application")]
private interface IApplication : DBusProxy {
public abstract void quit() throws GLib.Error;
public abstract void inspector() throws GLib.Error;
public abstract void toggle_window(string window) throws GLib.Error;
}
[DBus (name="org.freedesktop.DBus")]
private interface DBusImpl : DBusProxy {
public abstract string[] list_names() throws Error;
}
}
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