Avoid using the callbacks used for runtime changes for the initial
setup. They weren't really useful anyway as you could not allocate
a framebuffer without also knowing the pixel format. So make things
more clear by letting serverInit() get the initial settings.

We need to track different things in the server and client, so
separate things to two independent structures to keep things more
clear.

Avoid direct access to the screen dimensions and layout so that we
can make sure it stays sane. This also makes sure the layout is
properly updated when we only get the screen dimensions from the
server.

The compiler isn't smart enough to figure all of these out, so
restructure things a bit to avoid warnings.

Don't touch the existing value or we might mess it up when we avoid
division by zero.

This adds the basic infrastructure and handshake for the QEMU
Extended Key Events extension. No viewer or server makes use of
the extra functionality yet though.

Width and height of a cursor are received as U16 from network. Accepting full range of U16 values can cause integer overflows in multiple places.

The worst is probably VLA in CMsgReader::readSetXCursor:
  rdr::U8 buf[width*height*4];

The width*height*4 can be too big to fit on stack or it can overflow into negative numbers. Both cases are undefined behaviour. Following writes to buf can overwrite other data on stack.

This will allow us to use better formats that preserve the entire
alpha channel.

The connection object is a much more appropriate object for the
decoders and encoders to keep track of. Besides the streams, it also
contains state like connection parameters.

This keeps the reader and writer objects clean and simple protocol
decoders/encoders.

Avoids having to special case things. Keeps the code simpler.

We have no need for this abstraction so let's keep things simple.

garbage at us.


git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@4942 3789f03b-4d11-0410-bbf8-ca57d06f2519

encoding in the RFB protocol has always been signed, and signed values
are also used in the specification (ie DesktopName = -307 etc). In the
code, however, unsigned types were used in a number of places, but not
all, which causes warnings. This patch fixes the problem by switching
to signed values everywhere.



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of old and new features.


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This avoids big buffer overflow when memcpy is called with "-1" argument.


git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@3607 3789f03b-4d11-0410-bbf8-ca57d06f2519

updating the desktop name on the fly.

Tested in ThinLinc since 2008-01-07. 



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git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/branches/merge-with-vnc-4.1.1@522 3789f03b-4d11-0410-bbf8-ca57d06f2519

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