Feat: Windows-Hello Testing (DevTools Only)

src-tauri/Cargo.lock

@@ -2111,6 +2111,7 @@ dependencies = [
  "tokio",
  "urlencoding",
  "walkdir",
+ "windows 0.58.0",
 ]
 
 [[package]]
@@ -5472,6 +5473,16 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "windows"
+version = "0.58.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dd04d41d93c4992d421894c18c8b43496aa748dd4c081bac0dc93eb0489272b6"
+dependencies = [
+ "windows-core 0.58.0",
+ "windows-targets 0.52.6",
+]
+
 [[package]]
 name = "windows"
 version = "0.61.3"
@@ -5506,6 +5517,19 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "windows-core"
+version = "0.58.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ba6d44ec8c2591c134257ce647b7ea6b20335bf6379a27dac5f1641fcf59f99"
+dependencies = [
+ "windows-implement 0.58.0",
+ "windows-interface 0.58.0",
+ "windows-result 0.2.0",
+ "windows-strings 0.1.0",
+ "windows-targets 0.52.6",
+]
+
 [[package]]
 name = "windows-core"
 version = "0.61.2"
@@ -5554,6 +5578,17 @@ dependencies = [
  "syn 2.0.117",
 ]
 
+[[package]]
+name = "windows-implement"
+version = "0.58.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2bbd5b46c938e506ecbce286b6628a02171d56153ba733b6c741fc627ec9579b"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
 [[package]]
 name = "windows-implement"
 version = "0.60.2"
@@ -5576,6 +5611,17 @@ dependencies = [
  "syn 2.0.117",
 ]
 
+[[package]]
+name = "windows-interface"
+version = "0.58.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "053c4c462dc91d3b1504c6fe5a726dd15e216ba718e84a0e46a88fbe5ded3515"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
 [[package]]
 name = "windows-interface"
 version = "0.59.3"
@@ -5629,6 +5675,15 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "windows-result"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d1043d8214f791817bab27572aaa8af63732e11bf84aa21a45a78d6c317ae0e"
+dependencies = [
+ "windows-targets 0.52.6",
+]
+
 [[package]]
 name = "windows-result"
 version = "0.3.4"
@@ -5647,6 +5702,16 @@ dependencies = [
  "windows-link 0.2.1",
 ]
 
+[[package]]
+name = "windows-strings"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4cd9b125c486025df0eabcb585e62173c6c9eddcec5d117d3b6e8c30e2ee4d10"
+dependencies = [
+ "windows-result 0.2.0",
+ "windows-targets 0.52.6",
+]
+
 [[package]]
 name = "windows-strings"
 version = "0.4.2"

src-tauri/Cargo.toml

@@ -32,6 +32,12 @@ urlencoding               = "2"
 tokio                     = { version = "1", features = ["rt-multi-thread"] }
 reqwest                   = { version = "0.12", features = ["blocking"] }
 
+[target.'cfg(target_os = "windows")'.dependencies]
+windows = { version = "0.58", features = [
+    "Security_Credentials_UI",
+    "Win32_UI_WindowsAndMessaging",
+] }
+
 [profile.release]
 codegen-units = 1
 lto           = true

src-tauri/src/commands/biometric.rs

@@ -0,0 +1,93 @@
+#[cfg(target_os = "windows")]
+mod windows_hello {
+    use windows::{
+        core::HSTRING,
+        Security::Credentials::UI::{UserConsentVerificationResult, UserConsentVerifier},
+        Win32::UI::WindowsAndMessaging::{
+            BringWindowToTop, FindWindowW, IsIconic, SetForegroundWindow, ShowWindow, SW_RESTORE,
+        },
+    };
+
+    fn to_wide(s: &str) -> Vec<u16> {
+        use std::os::windows::ffi::OsStrExt;
+        std::ffi::OsStr::new(s)
+            .encode_wide()
+            .chain(std::iter::once(0))
+            .collect()
+    }
+
+    fn try_focus_hello_dialog() -> bool {
+        let cls = to_wide("Credential Dialog Xaml Host");
+        unsafe {
+            let Ok(hwnd) = FindWindowW(
+                windows::core::PCWSTR(cls.as_ptr()),
+                windows::core::PCWSTR::null(),
+            ) else {
+                return false;
+            };
+            if IsIconic(hwnd).as_bool() {
+                let _ = ShowWindow(hwnd, SW_RESTORE);
+            }
+            let _ = BringWindowToTop(hwnd);
+            let _ = SetForegroundWindow(hwnd);
+            true
+        }
+    }
+
+    fn nudge_focus(retries: u32, delay_ms: u64) {
+        std::thread::spawn(move || {
+            std::thread::sleep(std::time::Duration::from_millis(delay_ms));
+            for _ in 0..retries {
+                if try_focus_hello_dialog() {
+                    break;
+                }
+                std::thread::sleep(std::time::Duration::from_millis(delay_ms));
+            }
+        });
+    }
+
+    pub fn authenticate(reason: &str) -> Result<(), String> {
+        nudge_focus(5, 250);
+        let result = UserConsentVerifier::RequestVerificationAsync(&HSTRING::from(reason))
+            .and_then(|op| {
+                nudge_focus(5, 250);
+                op.get()
+            })
+            .map_err(|e| format!("internalError:{e:?}"))?;
+
+        match result {
+            UserConsentVerificationResult::Verified => Ok(()),
+            UserConsentVerificationResult::Canceled => Err("userCancel".into()),
+            UserConsentVerificationResult::RetriesExhausted => Err("biometryLockout".into()),
+            UserConsentVerificationResult::DeviceBusy => Err("systemCancel".into()),
+            UserConsentVerificationResult::DeviceNotPresent => Err("biometryNotAvailable".into()),
+            UserConsentVerificationResult::DisabledByPolicy => Err("biometryNotAvailable".into()),
+            UserConsentVerificationResult::NotConfiguredForUser => Err("biometryNotEnrolled".into()),
+            _ => Err("authenticationFailed".into()),
+        }
+    }
+
+    pub fn is_available() -> bool {
+        use windows::Security::Credentials::UI::UserConsentVerifierAvailability;
+        UserConsentVerifier::CheckAvailabilityAsync()
+            .and_then(|op| op.get())
+            .map(|a| a == UserConsentVerifierAvailability::Available)
+            .unwrap_or(false)
+    }
+}
+
+#[tauri::command]
+pub fn windows_hello_authenticate(_reason: String) -> Result<(), String> {
+    #[cfg(target_os = "windows")]
+    return windows_hello::authenticate(&reason);
+    #[cfg(not(target_os = "windows"))]
+    Err("notSupported".into())
+}
+
+#[tauri::command]
+pub fn windows_hello_available() -> bool {
+    #[cfg(target_os = "windows")]
+    return windows_hello::is_available();
+    #[cfg(not(target_os = "windows"))]
+    false
+}

src-tauri/src/commands/mod.rs

@@ -1,5 +1,6 @@
 pub mod backup;
+pub mod biometric;
 pub mod server;
 pub mod storage;
 pub mod system;
-pub mod updater;
+pub mod updater;

src-tauri/src/lib.rs

@@ -41,6 +41,8 @@ pub fn run() {
             commands::backup::get_auto_backup_dir,
             commands::updater::list_releases,
             commands::updater::download_and_install_update,
+            commands::biometric::windows_hello_authenticate,
+            commands::biometric::windows_hello_available,
         ])
         .setup(|_app| Ok(()))
         .on_window_event(|window, event| {