fix(deps): update rust crate xdg to v3 (#1950)

* fix(deps): update rust crate xdg to v3

* fix: xdg BaseDirectories has default values

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: zonyitoo <zonyitoo@gmail.com>

Cargo.lock

@@ -4858,9 +4858,9 @@ dependencies = [
 
 [[package]]
 name = "xdg"
-version = "2.5.2"
+version = "3.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "213b7324336b53d2414b2db8537e56544d981803139155afa84f76eeebb7a546"
+checksum = "2fb433233f2df9344722454bc7e96465c9d03bff9d77c248f9e7523fe79585b5"
 
 [[package]]
 name = "yoke"

Cargo.toml

@@ -226,7 +226,7 @@ qrcode = { version = "0.14", default-features = false, optional = true }
 sysexits = "0.9"
 build-time = "0.1"
 directories = "6.0"
-xdg = "2.5"
+xdg = "3.0"
 rpassword = "7.3"
 libc = { version = "0.2", features = ["extra_traits"] }
 rand = "0.9"

src/config.rs

@@ -54,7 +54,8 @@ pub fn get_default_config_path(config_file: &str) -> Option<PathBuf> {
     // UNIX systems, XDG Base Directory
     // https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html
     #[cfg(unix)]
-    if let Ok(base_directories) = xdg::BaseDirectories::with_prefix("shadowsocks-rust") {
+    {
+        let base_directories = xdg::BaseDirectories::with_prefix("shadowsocks-rust");
         // $XDG_CONFIG_HOME/shadowsocks-rust/config.json
         // for dir in $XDG_CONFIG_DIRS; $dir/shadowsocks-rust/config.json
         for filename in &config_files {
@@ -67,12 +68,13 @@ pub fn get_default_config_path(config_file: &str) -> Option<PathBuf> {
     // UNIX global configuration file
     #[cfg(unix)]
     {
+        let mut global_config_path = PathBuf::from("/etc/shadowsocks-rust");
         for filename in &config_files {
-            let path_str = "/etc/shadowsocks-rust/".to_owned() + filename;
-            let global_config_path = Path::new(&path_str);
+            global_config_path.push(filename);
             if global_config_path.exists() {
                 return Some(global_config_path.to_path_buf());
             }
+            global_config_path.pop();
         }
     }