Add 'New Login' button to unlock dialog

util/Cargo.toml

@@ -6,8 +6,11 @@ edition = "2021"
 [lib]
 
 [dependencies]
+anyhow = "1"
 clap = "3"
 env_logger = "0.9"
 lazy_static = "1"
 libc = "0.2"
+toml = "0.5"
 xcb = { git = "https://github.com/rust-x-bindings/rust-xcb", rev = "d09b5f91bc07d56673f1bc0d6c7ecd72b5ff7b3e", features = ["randr", "screensaver", "xfixes"] }
+xdg = "2"

util/src/lib.rs

@@ -1,4 +1,5 @@
-use std::{ffi::CStr, io};
+use std::{ffi::CStr, fs::File, io::{self, Read}};
+use toml::Value;
 use xcb::x;
 
 pub const BSCREENSAVER_WM_CLASS: &[u8] = b"bscreensaver\0Bscreensaver\0";
@@ -10,6 +11,21 @@ pub fn init_logging(env_name: &str) {
         .init();
 }
 
+pub fn load_configuration() -> anyhow::Result<Option<Value>> {
+    match xdg::BaseDirectories::new()?.find_config_file("bscreensaver.toml") {
+        None => Ok(None),
+        Some(config_path) => {
+            let mut f = File::open(config_path)?;
+            let mut config = String::new();
+            f.read_to_string(&mut config)?;
+            drop(f);
+
+            let config_toml = config.parse::<Value>()?;
+            Ok(Some(config_toml))
+        },
+    }
+}
+
 pub fn create_atom(conn: &xcb::Connection, name: &[u8]) -> xcb::Result<x::Atom> {
     let cookie = conn.send_request(&x::InternAtom {
         only_if_exists: false,