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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>
72 lines
2.4 KiB
Diff
72 lines
2.4 KiB
Diff
From 8d061adb7b00fc765b8001307c025437ef1cad88 Mon Sep 17 00:00:00 2001
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From: 21pages <sunboeasy@gmail.com>
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Date: Thu, 5 Sep 2024 16:32:16 +0800
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Subject: [PATCH 2/5] libavcodec/amfenc: reconfig when bitrate change
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Signed-off-by: 21pages <sunboeasy@gmail.com>
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---
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libavcodec/amfenc.c | 20 ++++++++++++++++++++
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libavcodec/amfenc.h | 1 +
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2 files changed, 21 insertions(+)
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diff --git a/libavcodec/amfenc.c b/libavcodec/amfenc.c
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index a47aea6108..f70f0109f6 100644
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--- a/libavcodec/amfenc.c
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+++ b/libavcodec/amfenc.c
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@@ -275,6 +275,7 @@ static int amf_init_context(AVCodecContext *avctx)
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ctx->hwsurfaces_in_queue = 0;
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ctx->hwsurfaces_in_queue_max = 16;
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+ ctx->av_bitrate = avctx->bit_rate;
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// configure AMF logger
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// the return of these functions indicates old state and do not affect behaviour
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@@ -640,6 +641,23 @@ static void amf_release_buffer_with_frame_ref(AMFBuffer *frame_ref_storage_buffe
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frame_ref_storage_buffer->pVtbl->Release(frame_ref_storage_buffer);
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}
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+static int reconfig_encoder(AVCodecContext *avctx)
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+{
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+ AmfContext *ctx = avctx->priv_data;
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+ AMF_RESULT res = AMF_OK;
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+
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+ if (ctx->av_bitrate != avctx->bit_rate) {
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+ av_log(ctx, AV_LOG_INFO, "change bitrate from %d to %d\n", ctx->av_bitrate, avctx->bit_rate);
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+ ctx->av_bitrate = avctx->bit_rate;
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+ if (avctx->codec->id == AV_CODEC_ID_H264) {
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+ AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder, AMF_VIDEO_ENCODER_TARGET_BITRATE, avctx->bit_rate);
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+ } else if (avctx->codec->id == AV_CODEC_ID_HEVC) {
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+ AMF_ASSIGN_PROPERTY_INT64(res, ctx->encoder, AMF_VIDEO_ENCODER_HEVC_TARGET_BITRATE, avctx->bit_rate);
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+ }
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+ }
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+ return 0;
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+}
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+
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int ff_amf_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
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{
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AmfContext *ctx = avctx->priv_data;
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@@ -653,6 +671,8 @@ int ff_amf_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
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int query_output_data_flag = 0;
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AMF_RESULT res_resubmit;
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+ reconfig_encoder(avctx);
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+
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if (!ctx->encoder)
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return AVERROR(EINVAL);
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diff --git a/libavcodec/amfenc.h b/libavcodec/amfenc.h
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index 320c66919e..481e0fb75d 100644
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--- a/libavcodec/amfenc.h
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+++ b/libavcodec/amfenc.h
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@@ -115,6 +115,7 @@ typedef struct AmfContext {
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int max_b_frames;
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int qvbr_quality_level;
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int hw_high_motion_quality_boost;
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+ int64_t av_bitrate;
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// HEVC - specific options
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--
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2.43.0.windows.1
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