This is a regression introduced in v0.10.x
This version introduced a state machine to handle resizes requested
by the client and the server. Most configurations support resizeable
sessions, but one that doesn't is xrdp connecting to x11vnc on (e.g.) a
Raspberry PI.
If the session size requested by a client is differnt from the x11vnc
size, an error is logged and the state machine fails to complete,
resulting in a black screen.
This PR handles the problem by queueing a resize to the supported
server size and then continuing with the state machine. It's not an
optimal solution, but involves the least change to v0.10.x code.
vnc.c: In function ‘lib_framebuffer_update’:
vnc.c:816:37: error: ‘b’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
816 | return (r << 16) | (g << 8) | b;
| ~~~~~~~~~~~~~~~~~~~~~^~~
vnc.c:1301:9: note: ‘b’ was declared here
1301 | int b;
| ^
vnc.c:816:31: error: ‘g’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
816 | return (r << 16) | (g << 8) | b;
| ~~~^~~~~
vnc.c:1300:9: note: ‘g’ was declared here
1300 | int g;
| ^
vnc.c:816:19: error: ‘r’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
816 | return (r << 16) | (g << 8) | b;
| ~~~^~~~~~
vnc.c:1299:9: note: ‘r’ was declared here
1299 | int r;
| ^
Significant updates for the VNC module:-
1) Support for the new API calls allowing both server and client
multi-monitor resizes.
2) The s member variable of the vnc_screen_layout structure is no longer
dynamically allocated.
3) The module server_width and server_height member variables are
removed as these are just duplicating server_layout.total_width and
server_layout.total_height.
4) When the server screens are resized, there is no need to restart the
entire resize state machine as we already know at this point that
the server supports resizing.
This fixes some monitor hotplug issues with non-GFX codepaths.
1) The server_version_message() was working on an out-of-date
copy of the client_info. As a result, the X server and the
window manager did not agree on the number of windows
2) As a result of 1), a memory leak was found in the VNC module.
* Store EGFX state before entering resize state machine
At present the EGFX state is destroyed by states WMRZ_EGFX_DELETE_SURFACE
through WRMZ_EGFX_DELETE. This means that at WMRZ_EGFX_INITIALIZE we
cannot distinguish between EGFX not being ever used, and EGFX
having been torn down. Consequently, when running non-GFX, we don't
correctly recover the session.
* Allow multiple reasons for suppress_output
Replaces the single boolean for suppress_output with
a bitmask, to allow output to be suppressed for
more than one reason
* Disable output during resize
* Add states to dynamic resize
Adds states to the dynamic resize state machine so we wait for a
Deactivation-Reactivation sequence to finish before sending pointer
updates, etc.
* suppress module output during the dynamic resize
* Add support for dynamic resize to VNC backend
xrdp_mm needs to be informed when a resize has been performed so that
the resize stte machine can be updsate.
- Eliminate duplicaiton for display_size_description
- monitorCount needs to be uint32_t
- width/height -> session_width/session_height
- Update CLIENT_INFO_CURRENT_VERSION
- Also some misc unit test updates.
- Minor log updates.
- Based on https://github.com/jsorg71/xrdp/tree/dynamic_monitor
- Tested with xorgxrdp
- Tested with vnc
- Only works with single monitor.
- Update documentation to clarify the difference between MSTSC and
Microsoft Remote Desktop.
- Does not include compatibility with /gfx at this time, which is still
in testing.
- Updates to include ms-rdpedisp.h header for the 2.2.2 specification of
the protocol.
- Adds new dynamic_monitor_layout struct that shares the number of
monitors with xrdp_client_info.h
- Does not allow for BPP changes because the RDP protocol doesn't
support it.
- Option to disable feature as NeutrinoRDP doesn't support it (It was
based on FreeRDP 1.0.1 which didn't yet have this feature.)
- Add CLIENT_MONITOR_DATA_MAXIMUM_MONITORS constant and reference
spec definition.
Depends on https://github.com/neutrinolabs/xorgxrdp/pull/183
This fixes loading modules compiled with a C++ compiler. Remote thandle
type, it's unused. Use tintptr for module data. Don't cast pointers to
long, they won't fit on Win64.
