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build-windows / build-hello-agent-x64 (push) Successful in 5m41s
A single-binary, Flutter-free remote-support agent that speaks the stock
RustDesk wire protocol. Designed for one-line MDM deployment against a
self-hosted rustdesk-server: a supporter using the unmodified rustdesk.exe
client connects, the controlled-side user gets a native Win32 approval
prompt, click Yes / No.
CLI surface
hello-agent.exe --install # register + start service
hello-agent.exe --uninstall # stop, delete, clean up
hello-agent.exe --config <BLOB> # admin-UI deploy string
hello-agent.exe --install --config <BLOB> # MDM one-liner
--config accepts both forms emitted by the rustdesk-server admin UI: the
reversed-base64 deploy string and the host=,key=,api=,relay= filename
form. Decoded via the upstream custom_server module, persisted via
hbb_common::config::Config::set_option.
Architecture
--service runs as a Session 0 LocalSystem service. It polls
WTSGetActiveConsoleSessionId and (re)spawns hello-agent.exe --server
into the active console session via librustdesk::platform::run_as_user,
handling the Session 0 → user-session token impersonation.
--server is the worker. It boots three concurrent components:
1. cm_popup: an IPC listener on the rustdesk `_cm` named pipe
2. librustdesk::start_server(true, false): the upstream protocol
stack — rendezvous mediator, NAT punch, IPC server, screen
capture, login validation, hbbs_http heartbeat / sysinfo sync
3. (implicit) ApproveMode::Click is pinned in config, so every
incoming connection routes through cm_popup
The popup mechanism reuses an existing upstream contract without any
patches to the protocol code: when a peer connects with no password,
Connection::start in the upstream code calls try_start_cm_ipc, which
ipc::connect-s the `_cm` pipe before falling back to spawning a Flutter
CM child. Since cm_popup is up first, step 1 succeeds; we read the
Data::Login{authorized:false} frame, show MessageBoxTimeoutW (Yes/No,
60s, top-most, system-modal), and reply Data::Authorize or Data::Close.
Source tree
src/main.rs CLI dispatcher + run_server() composition
src/cli.rs hand-rolled argv parser + unit tests
src/service.rs windows-service install/uninstall/dispatcher
src/config_import.rs --config blob decoding + persistence
src/cm_popup.rs _cm IPC listener + Win32 approval dialog
Vendoring
The upstream RustDesk crate is vendored under vendor/rustdesk/ — full
workspace including libs/{hbb_common, scrap, enigo, clipboard,
virtual_display, remote_printer}. This makes the build self-contained
(no submodules, no sibling-repo checkout in CI) and gives us freedom to
fork in a different direction later. Excluded from the vendor: .git,
target/, flutter/, appimage/, flatpak/, fastlane/, docs/, examples/,
ci/, build.py, Dockerfile, upstream README/CLAUDE/AGENTS/GEMINI.
One local divergence vs. upstream: vendor/rustdesk/src/lib.rs flips
`mod custom_server` → `pub mod custom_server` so config_import.rs can
call get_custom_server_from_string without going through the
ui_interface shim. Documented in README.md → "Re-syncing the vendored
copy".
CI
.gitea/workflows/build-windows.yml builds on a self-hosted Windows
runner with Rust 1.75, LLVM 15.0.6 (libclang for bindgen via libvpx-sys),
and a vcpkg cache. The vendored vcpkg.json drives x64-windows-static
deps. The workflow stages the resulting hello-agent.exe into
SignOutput\, reports authenticode signing status (warns on unsigned),
and uploads as artifact. ~15 min full build, faster on incremental.
Out of scope for this commit: Linux/macOS builds, code signing, MSI
packaging, coexistence with stock rustdesk on the same box (currently
shares the RustDesk APP_NAME and config dir).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
62 lines
1.5 KiB
Rust
62 lines
1.5 KiB
Rust
#[cfg(target_os = "windows")]
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fn main() {}
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#[cfg(target_os = "macos")]
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fn main() {}
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#[cfg(target_os = "linux")]
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use pkg_config;
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#[cfg(target_os = "linux")]
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use std::env;
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#[cfg(target_os = "linux")]
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use std::fs::File;
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#[cfg(target_os = "linux")]
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use std::io::Write;
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#[cfg(target_os = "linux")]
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use std::path::Path;
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#[cfg(target_os = "linux")]
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fn main() {
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let libraries = [
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"xext",
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"gl",
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"xcursor",
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"xxf86vm",
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"xft",
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"xinerama",
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"xi",
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"x11",
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"xlib_xcb",
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"xmu",
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"xrandr",
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"xtst",
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"xrender",
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"xscrnsaver",
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"xt",
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];
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let mut config = String::new();
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for lib in libraries.iter() {
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let libdir = match pkg_config::get_variable(lib, "libdir") {
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Ok(libdir) => format!("Some(\"{}\")", libdir),
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Err(_) => "None".to_string(),
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};
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config.push_str(&format!(
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"pub const {}: Option<&'static str> = {};\n",
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lib, libdir
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));
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}
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let config = format!("pub mod config {{ pub mod libdir {{\n{}}}\n}}", config);
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let out_dir = env::var("OUT_DIR").unwrap();
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let dest_path = Path::new(&out_dir).join("config.rs");
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let mut f = File::create(&dest_path).unwrap();
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f.write_all(&config.into_bytes()).unwrap();
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let target = env::var("TARGET").unwrap();
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if target.contains("linux") {
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println!("cargo:rustc-link-lib=dl");
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} else if target.contains("freebsd") || target.contains("dragonfly") {
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println!("cargo:rustc-link-lib=c");
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}
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}
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