[PM-22788] Add Autotype Crate and Windowing Functions (#15317)

* [PM-22783] Add initial feature flag and settings toggle for autotype MVP

* [PM-22783] Undo Cargo.lock changes

* [PM-22783] Disable console.log block

* [PM-22783] Lint fix

* [PM-22783] Small updates

* [PM-22783] Build fix

* [PM-22783] Use combineLatest in updating the desktop autotype service

* [PM-22783] Check if the user is on Windows

* [PM-22783] Undo access selector html change, linting keeps removing this

* [PM-22783] Fix failing test

* [PM-22788] Add initial desktop native autotype crate based on spike ticket investigation

* [PM-22788] cargo fmt

* [PM-22783] Update autotypeEnabled to be stored in service

* [PM-22783] Add todo comments

* [PM-22783] Add SlimConfigService and MainDesktopAutotypeService

* [PM-22783] Small fixes

* [PM-22788] Add get_foreground_window_title() and cleanup

* [PM-22788] Add comment

* [PM-22788] Lint and cross platform build fixes

* [PM-22788] Update windows.rs in autotype_internal

* [PM-22788] Update windows.rs and dummy.rs in autotype_internal

* [PM-22788] cargo fmt

* [PM-22788] Edit napi result types

* [PM-22788] Edit napi result types again

* [PM-22788] Add autofill as a codeowner of the desktop_native/autotype directory

* [PM-22788] Refactor autotype code

* [PM-22788] Move autotype dependency out of windows only due to abstraction change

* [PM-22788] Fix lint errors

* [PM-22788] Updates based on PR comments

* [PM-22788] cargo fmt

.github/CODEOWNERS

@@ -134,6 +134,7 @@ libs/common/src/autofill @bitwarden/team-autofill-dev
 apps/desktop/macos/autofill-extension @bitwarden/team-autofill-dev
 apps/desktop/src/app/components/fido2placeholder.component.ts @bitwarden/team-autofill-dev
 apps/desktop/desktop_native/windows_plugin_authenticator @bitwarden/team-autofill-dev
+apps/desktop/desktop_native/autotype @bitwarden/team-autofill-dev
 # DuckDuckGo integration
 apps/desktop/native-messaging-test-runner @bitwarden/team-autofill-dev
 apps/desktop/src/services/duckduckgo-message-handler.service.ts @bitwarden/team-autofill-dev

apps/desktop/desktop_native/Cargo.lock

@@ -349,6 +349,14 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ace50bade8e6234aa140d9a2f552bbee1db4d353f69b8217bc503490fc1a9f26"
 
+[[package]]
+name = "autotype"
+version = "0.0.0"
+dependencies = [
+ "windows 0.61.1",
+ "windows-core 0.61.0",
+]
+
 [[package]]
 name = "backtrace"
 version = "0.3.75"
@@ -912,6 +920,7 @@ name = "desktop_napi"
 version = "0.0.0"
 dependencies = [
  "anyhow",
+ "autotype",
  "base64",
  "desktop_core",
  "hex",
@@ -3677,7 +3686,7 @@ dependencies = [
  "windows-implement 0.60.0",
  "windows-interface 0.59.1",
  "windows-link",
- "windows-result 0.3.2",
+ "windows-result 0.3.4",
  "windows-strings",
 ]
 
@@ -3737,9 +3746,9 @@ dependencies = [
 
 [[package]]
 name = "windows-link"
-version = "0.1.1"
+version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "76840935b766e1b0a05c0066835fb9ec80071d4c09a16f6bd5f7e655e3c14c38"
+checksum = "5e6ad25900d524eaabdbbb96d20b4311e1e7ae1699af4fb28c17ae66c80d798a"
 
 [[package]]
 name = "windows-numerics"
@@ -3753,12 +3762,12 @@ dependencies = [
 
 [[package]]
 name = "windows-registry"
-version = "0.5.1"
+version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ad1da3e436dc7653dfdf3da67332e22bff09bb0e28b0239e1624499c7830842e"
+checksum = "5b8a9ed28765efc97bbc954883f4e6796c33a06546ebafacbabee9696967499e"
 dependencies = [
  "windows-link",
- "windows-result 0.3.2",
+ "windows-result 0.3.4",
  "windows-strings",
 ]
 
@@ -3773,18 +3782,18 @@ dependencies = [
 
 [[package]]
 name = "windows-result"
-version = "0.3.2"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c64fd11a4fd95df68efcfee5f44a294fe71b8bc6a91993e2791938abcc712252"
+checksum = "56f42bd332cc6c8eac5af113fc0c1fd6a8fd2aa08a0119358686e5160d0586c6"
 dependencies = [
  "windows-link",
 ]
 
 [[package]]
 name = "windows-strings"
-version = "0.4.0"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7a2ba9642430ee452d5a7aa78d72907ebe8cfda358e8cb7918a2050581322f97"
+checksum = "56e6c93f3a0c3b36176cb1327a4958a0353d5d166c2a35cb268ace15e91d3b57"
 dependencies = [
  "windows-link",
 ]

apps/desktop/desktop_native/Cargo.toml

@@ -1,6 +1,6 @@
 [workspace]
 resolver = "2"
-members = ["napi", "core", "proxy", "macos_provider", "windows_plugin_authenticator"]
+members = ["napi", "core", "proxy", "macos_provider", "windows_plugin_authenticator", "autotype"]
 
 [workspace.package]
 version = "0.0.0"
@@ -60,7 +60,7 @@ widestring = "=1.2.0"
 windows = "=0.61.1"
 windows-core = "=0.61.0"
 windows-future = "=0.2.0"
-windows-registry = "=0.5.1"
+windows-registry = "=0.5.3"
 zbus = "=5.5.0"
 zbus_polkit = "=5.0.0"
 zeroizing-alloc = "=0.1.0"

apps/desktop/desktop_native/autotype/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "autotype"
+version.workspace = true
+license.workspace = true
+edition.workspace = true
+publish.workspace = true
+
+[target.'cfg(windows)'.dependencies]
+windows = { workspace = true, features = ["Win32_UI_Input_KeyboardAndMouse", "Win32_UI_WindowsAndMessaging"] }
+windows-core = { workspace = true }

apps/desktop/desktop_native/autotype/src/lib.rs

@@ -0,0 +1,12 @@
+#[cfg_attr(target_os = "linux", path = "linux.rs")]
+#[cfg_attr(target_os = "macos", path = "macos.rs")]
+#[cfg_attr(target_os = "windows", path = "windows.rs")]
+mod windowing;
+
+/// Gets the title bar string for the foreground window.
+///
+/// TODO: The error handling will be improved in a future PR: PM-23615
+#[allow(clippy::result_unit_err)]
+pub fn get_foreground_window_title() -> std::result::Result<String, ()> {
+    windowing::get_foreground_window_title()
+}

apps/desktop/desktop_native/autotype/src/linux.rs

@@ -0,0 +1,3 @@
+pub fn get_foreground_window_title() -> std::result::Result<String, ()> {
+    todo!("Bitwarden does not yet support Linux autotype");
+}

apps/desktop/desktop_native/autotype/src/macos.rs

@@ -0,0 +1,3 @@
+pub fn get_foreground_window_title() -> std::result::Result<String, ()> {
+    todo!("Bitwarden does not yet support Mac OS autotype");
+}

apps/desktop/desktop_native/autotype/src/windows.rs

@@ -0,0 +1,75 @@
+use std::ffi::OsString;
+use std::os::windows::ffi::OsStringExt;
+
+use windows::Win32::Foundation::HWND;
+use windows::Win32::UI::WindowsAndMessaging::{
+    GetForegroundWindow, GetWindowTextLengthW, GetWindowTextW,
+};
+
+/// Gets the title bar string for the foreground window.
+pub fn get_foreground_window_title() -> std::result::Result<String, ()> {
+    let Ok(window_handle) = get_foreground_window() else {
+        return Err(());
+    };
+    let Ok(Some(window_title)) = get_window_title(window_handle) else {
+        return Err(());
+    };
+
+    Ok(window_title)
+}
+
+/// Gets the foreground window handle.
+///
+/// https://learn.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-getforegroundwindow
+fn get_foreground_window() -> Result<HWND, ()> {
+    let foreground_window_handle = unsafe { GetForegroundWindow() };
+
+    if foreground_window_handle.is_invalid() {
+        return Err(());
+    }
+
+    Ok(foreground_window_handle)
+}
+
+/// Gets the length of the window title bar text.
+///
+/// TODO: Future improvement is to use GetLastError for better error handling
+///
+/// https://learn.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-getwindowtextlengthw
+fn get_window_title_length(window_handle: HWND) -> Result<usize, ()> {
+    if window_handle.is_invalid() {
+        return Err(());
+    }
+
+    match usize::try_from(unsafe { GetWindowTextLengthW(window_handle) }) {
+        Ok(length) => Ok(length),
+        Err(_) => Err(()),
+    }
+}
+
+/// Gets the window title bar title.
+///
+/// TODO: Future improvement is to use GetLastError for better error handling
+///
+/// https://learn.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-getwindowtextw
+fn get_window_title(window_handle: HWND) -> Result<Option<String>, ()> {
+    if window_handle.is_invalid() {
+        return Err(());
+    }
+
+    let window_title_length = get_window_title_length(window_handle)?;
+    if window_title_length == 0 {
+        return Ok(None);
+    }
+
+    let mut buffer: Vec<u16> = vec![0; window_title_length + 1]; // add extra space for the null character
+
+    let window_title_length = unsafe { GetWindowTextW(window_handle, &mut buffer) };
+    if window_title_length == 0 {
+        return Ok(None);
+    }
+
+    let window_title = OsString::from_wide(&buffer);
+
+    Ok(Some(window_title.to_string_lossy().into_owned()))
+}

apps/desktop/desktop_native/napi/Cargo.toml

@@ -14,6 +14,7 @@ default = []
 manual_test = []
 
 [dependencies]
+autotype = { path = "../autotype" }
 base64 = { workspace = true }
 hex = { workspace = true }
 anyhow = { workspace = true }

apps/desktop/desktop_native/napi/index.d.ts

@@ -208,3 +208,6 @@ export declare namespace logging {
   }
   export function initNapiLog(jsLogFn: (err: Error | null, arg0: LogLevel, arg1: string) => any): void
 }
+export declare namespace autotype {
+  export function getForegroundWindowTitle(): string
+}

apps/desktop/desktop_native/napi/src/lib.rs

@@ -865,3 +865,15 @@ pub mod logging {
         fn flush(&self) {}
     }
 }
+
+#[napi]
+pub mod autotype {
+    #[napi]
+    pub fn get_foreground_window_title() -> napi::Result<String, napi::Status> {
+        autotype::get_foreground_window_title().map_err(|_| {
+            napi::Error::from_reason(
+                "Autotype Error: faild to get foreground window title".to_string(),
+            )
+        })
+    }
+}

apps/desktop/src/autofill/main/main-desktop-autotype.service.ts

@@ -1,3 +1,5 @@
+import { autotype } from "@bitwarden/desktop-napi";
+
 import { DesktopAutotypeService } from "../services/desktop-autotype.service";
 
 export class MainDesktopAutotypeService {
@@ -17,6 +19,10 @@ export class MainDesktopAutotypeService {
   private enableAutotype() {
     // eslint-disable-next-line no-console
     console.log("Enabling Autotype...");
+
+    const result = autotype.getForegroundWindowTitle();
+    // eslint-disable-next-line no-console
+    console.log("Window Title: " + result);
   }
 
   // TODO: this will call into desktop native code