The previous commit was incorrect in that it overrides automake's
dependency list, rather than adding to it. So we need to make sure
things are duplicated between Xvnc_DEPENDENCIES and Xvnc_LDADD as
appropriate.
Use the same approach as the Xorg binary to keep things familiar.
These aren't crucial for a clean build, but must be set for Xvnc to be
properly rebuilt if anything in the Xorg tree changes. automake doesn't
properly deduce these automatically from Xvnc_LDADD, unfortunately.
Safely discard large (extended) clipboard contents
Avoid having to buffer everything we want to discard, and instead do it
piece by piece. This is more efficient, and avoids hitting any limits on
the buffering.
Note that this is safe here because we already know we have all the
compressed data. It would not be safe for a general input stream.
These streams both need to change the corking state temporarily, but it
is important it is restored to the previous state or things might get
messed up.
For the zlib stream it would just leave things uncorked, which still
works but is less efficient.
But for the TLS stream it might make things very unresponsive as the
corking might be left on permanently, delaying packets indefinitely.
It seems MFT h264 decoder does not support frame cropping. Which
means that if frame width or height is not multiple of 16 then
decoded output can potentially be used with wrong offset. This
code adds explicit parsing of SPS to extract cropping information
to use, and will apply cropping if reported size differs from
expected.
We need this function to deal with pkgconfig files properly, but
unfortunately it doesn't exist until CMake 3.13, and we need to support
CMake 3.10. So add a hacky compatibility function for older systems.
FLTK has a lot of synchronous stuff (like dialogs), which mean that the
main loop might be run recursively in some cases. If there is data
available on our socket then CConn::socketEvent() will be called
constantly in a busy loop.
Avoid this by removing socket notifications whilst we are processing
data.
Enable this automatically for developers so we increase the chance of
these problems getting caught. There is a risk of overhead though so
keep them disabled for release builds.
Unfortunately this error can be given by GnuTLS even though the
underlying stream still has data available. So stop trusting this value
and keep track of the underlying stream explicitly.
We need to get to the point of starting the session script before we
consider things a success. So this can fail in many different ways, not
just the daemonization. Adjust the error message to something more
generic to reflect this.
SELinux: use /root/.vnc in file context specification
Instead of HOME_ROOT/.vnc, /root/.vnc should be used
for user root's home to specify default file context
as HOME_ROOT actually means base for home dirs (usually /home).