RustDeskandClaude Opus 5.5 13e1278b4c fix: auto-login types the OS password only at the logon or lock screen (#16520)
* fix: auto-login types the OS password only at the logon or lock screen

A remote-control login on Windows and macOS now reports is_logon_screen
in platform_additions, and the client skips auto-login when the peer
reports false. Peers that don't report it (older ones, Linux) keep
today's behaviour, so this narrows the leak into the focused window
without closing it: the value is a snapshot taken at login.

Windows 7 and Server 2008 R2 report the WTS lock flag reversed, so
there only LogonUI.exe tells the lock screen apart.

Refs #16510, #15261

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01P1grQ39ByRWPUtTBdTzEBF

* windows: drop the LogonUI.exe check from is_logon_screen

LogonUI.exe can outlive the unlock and is matched by name only, so its
presence reported a lock screen on an unlocked desktop and let the
password through. Only the WTS lock flag decides now; on Windows 7 and
Server 2008 R2, which report it reversed, the result is inverted.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01P1grQ39ByRWPUtTBdTzEBF

* windows: count only a confirmed logon or lock screen for auto-login

is_prelogin() reads a failed WTS user-name query as no user signed in,
and on Windows 7 the inverted is_locked() read a failed lock-flag query
as locked, so either failure let the password through. is_logon_screen
now uses its own queries that keep a failed read apart, and reads LOCK
and UNLOCK the other way round on Windows 7 and Server 2008 R2. The
existing functions stay as they are for their callers.

If the check task itself fails, the server reports false instead of
leaving the key out, which old clients' peers would mean.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01P1grQ39ByRWPUtTBdTzEBF

* auto-login: ask the peer with a protobuf field instead of a JSON key

The client sets the new LoginRequest.auto_login only when Auto Login
would type the OS password, and the server runs the logon-screen check
only then, so nothing new runs for any other login. The answer is the
new PeerInfo.skip_auto_login: its default, false, is what an old or
Linux server means, so those peers keep typing as before, and neither
field is encoded unless set. The is_logon_screen key in
platform_additions is gone.

Windows is_locked() now reads the lock flag through
is_session_locked_flag(), which handles the reversed LOCK/UNLOCK of
Windows 7 and Server 2008 R2. Its only caller is the
allow-logon-screen-password check, which on those systems accepted the
permanent password on an unlocked desktop. Windows 8 and later read the
same as before. The C is_session_locked() is removed and its
WTS_CURRENT_SESSION guard moves into get_session_flags().

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01P1grQ39ByRWPUtTBdTzEBF

* auto-login: let the peer type the password, after checking its screen

The login-time check left the whole time until the password arrived
open: the screen could be unlocked during the click, the 1.2 s wait and
two network trips, a second client's password landed on the desktop the
first one had just unlocked, and turning Auto Login on mid-login skipped
the check.

Now the client still clicks and waits, then sends the password in a new
Message.os_login (reusing OSLogin) to a Windows or macOS peer from 1.5.1.
The peer checks for its logon or lock screen right then and types the
password and Return only if it finds one; otherwise it drops them. Other
peers get the keys as before, and the OS Password menu item is
unchanged. The password goes out only after login, never in the login
request. LoginRequest.auto_login and PeerInfo.skip_auto_login are
removed, so nothing new runs unless os_login arrives.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01P1grQ39ByRWPUtTBdTzEBF

* server: name os_login in scope-violation logs

A rejected os_login was logged as message.other.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01P1grQ39ByRWPUtTBdTzEBF

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-13 12:06:15 +08:00
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RustDesk - Your remote desktop
Build • Docker • Structure • Screenshots
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Caution

Misuse Disclaimer:
The developers of RustDesk do not condone or support any unethical or illegal use of this software. Misuse, such as unauthorized access, control or invasion of privacy, is strictly against our guidelines. The authors are not responsible for any misuse of the application.

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RustDesk Server Pro

Yet another remote desktop solution, written in Rust. Works out of the box with no configuration required. You have full control of your data, with no concerns about security. You can use our rendezvous/relay server, set up your own, or write your own rendezvous/relay server.

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RustDesk welcomes contribution from everyone. See CONTRIBUTING.md for help getting started.

FAQ

BINARY DOWNLOAD

NIGHTLY BUILD

Get it on F-Droid Get it on Flathub

Dependencies

Desktop versions use Flutter or Sciter (deprecated) for GUI. This tutorial is for Sciter only, since it is easier and more friendly to start. Check out our CI for building the Flutter version.

Please download Sciter dynamic library yourself.

Windows | Linux | macOS

Raw Steps to build

  • Prepare your Rust development env and C++ build env

  • Install vcpkg, and set VCPKG_ROOT env variable correctly

    • Windows: vcpkg install libvpx:x64-windows-static libyuv:x64-windows-static opus:x64-windows-static aom:x64-windows-static
    • Linux/macOS: vcpkg install libvpx libyuv opus aom
  • run cargo run

Build

How to Build on Linux

Ubuntu 18 (Debian 10)

sudo apt install -y zip g++ gcc git curl wget nasm yasm libgtk-3-dev clang libxcb-randr0-dev libxdo-dev \
        libxfixes-dev libxcb-shape0-dev libxcb-xfixes0-dev libasound2-dev libpulse-dev cmake make \
        libclang-dev ninja-build libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev

openSUSE Tumbleweed

sudo zypper install gcc-c++ git curl wget nasm yasm gcc gtk3-devel clang libxcb-devel libXfixes-devel cmake alsa-lib-devel gstreamer-devel gstreamer-plugins-base-devel xdotool-devel

Fedora 28 (CentOS 8)

sudo yum -y install gcc-c++ git curl wget nasm yasm gcc gtk3-devel clang libxcb-devel libxdo-devel libXfixes-devel pulseaudio-libs-devel cmake alsa-lib-devel gstreamer1-devel gstreamer1-plugins-base-devel

Arch (Manjaro)

sudo pacman -Syu --needed unzip git cmake gcc curl wget yasm nasm zip make pkg-config clang gtk3 xdotool libxcb libxfixes alsa-lib pipewire

Install vcpkg

git clone https://github.com/microsoft/vcpkg
cd vcpkg
git checkout 2023.04.15
cd ..
vcpkg/bootstrap-vcpkg.sh
export VCPKG_ROOT=$HOME/vcpkg
vcpkg/vcpkg install libvpx libyuv opus aom

Fix libvpx (For Fedora)

cd vcpkg/buildtrees/libvpx/src
cd *
./configure
sed -i 's/CFLAGS+=-I/CFLAGS+=-fPIC -I/g' Makefile
sed -i 's/CXXFLAGS+=-I/CXXFLAGS+=-fPIC -I/g' Makefile
make
cp libvpx.a $HOME/vcpkg/installed/x64-linux/lib/
cd

Build

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
source $HOME/.cargo/env
git clone --recurse-submodules https://github.com/rustdesk/rustdesk
cd rustdesk
mkdir -p target/debug
wget https://raw.githubusercontent.com/c-smile/sciter-sdk/master/bin.lnx/x64/libsciter-gtk.so
mv libsciter-gtk.so target/debug
VCPKG_ROOT=$HOME/vcpkg cargo run

How to build with Docker

Begin by cloning the repository and building the Docker container:

git clone https://github.com/rustdesk/rustdesk
cd rustdesk
git submodule update --init --recursive
docker build -t "rustdesk-builder" .

Then, each time you need to build the application, run the following command:

docker run --rm -it -v $PWD:/home/user/rustdesk -v rustdesk-git-cache:/home/user/.cargo/git -v rustdesk-registry-cache:/home/user/.cargo/registry -e PUID="$(id -u)" -e PGID="$(id -g)" rustdesk-builder

Note that the first build may take longer before dependencies are cached, subsequent builds will be faster. Additionally, if you need to specify different arguments to the build command, you may do so at the end of the command in the <OPTIONAL-ARGS> position. For instance, if you wanted to build an optimized release version, you would run the command above followed by --release. The resulting executable will be available in the target folder on your system, and can be run with:

target/debug/rustdesk

Or, if you're running a release executable:

target/release/rustdesk

Please ensure that you run these commands from the root of the RustDesk repository, or the application may not find the required resources. Also note that other cargo subcommands such as install or run are not currently supported via this method as they would install or run the program inside the container instead of the host.

File Structure

Screenshots

Connection Manager

Connected to a Windows PC

File Transfer

TCP Tunneling

S
Description
Open source virtual / remote desktop infrastructure for everyone! The open source TeamViewer alternative. Display and control your PC and Android devices from anywhere at anytime.
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