Add device HWID support to sing-box subscriptions

src-tauri/src/models.rs

@@ -138,6 +138,8 @@ pub struct LocalSingBoxConfig {
     #[serde(default)]
     pub subscription_url: Option<String>,
     #[serde(default)]
+    pub device_hwid: Option<String>,
+    #[serde(default)]
     pub selected_server_tag: Option<String>,
     #[serde(default = "default_local_singbox_listen_host")]
     pub listen_host: String,
@@ -157,12 +159,17 @@ impl LocalSingBoxConfig {
             .as_deref()
             .map(redact_subscription_url)
     }
+
+    pub fn device_hwid_display(&self) -> Option<String> {
+        self.device_hwid.as_deref().map(redact_device_hwid)
+    }
 }
 
 impl Default for LocalSingBoxConfig {
     fn default() -> Self {
         Self {
             subscription_url: None,
+            device_hwid: None,
             selected_server_tag: None,
             listen_host: default_local_singbox_listen_host(),
             listen_port: default_local_singbox_listen_port(),
@@ -271,3 +278,27 @@ pub fn redact_subscription_url(raw_url: &str) -> String {
         }
     }
 }
+
+pub fn redact_device_hwid(raw_hwid: &str) -> String {
+    let trimmed = raw_hwid.trim();
+    if trimmed.is_empty() {
+        return String::new();
+    }
+
+    let length = trimmed.chars().count();
+    if length <= 8 {
+        return "***".to_string();
+    }
+
+    let prefix = trimmed.chars().take(4).collect::<String>();
+    let suffix = trimmed
+        .chars()
+        .rev()
+        .take(4)
+        .collect::<String>()
+        .chars()
+        .rev()
+        .collect::<String>();
+
+    format!("{prefix}...{suffix}")
+}