Attributes GH PR #40: https://github.com/ArcticaProject/nx-libs/pull/40

imake clean-up: Enforce build of Mesa GLX extension. Drop all other GLX build methods (built-in DRI drivers, etc.).

* MS Windows (non-tested)
* Mac OS X (not provided)
* SGISI / opengl (not provided)
* DRI support (nxagent uses Mesa software emulation only)

 The client-side library libNX_GL.{a,so} is not built when building nx-libs.

 However, nx-X11/lib/GL/** ships several imake include files
 (Imakefile.inc) that are also used in nx-X11/programs/Xserver/GL/**.
 These files have been moved from the nx-X11/lib/GL/ code subtree to the
 nx-X11/programs/Xserver/GL/.

 Furthermore, we don't provide module builds of the GL extension anymore,
 as that feature is neither used in nx-libs.

Fix negotiation in stage 10 error.

Attributes GH PR #39: https://github.com/ArcticaProject/nx-libs/pull/39

* Unix file socket support -> 3.6.x
* Embedding / re-parenting -> 3.6.x

Xext CVE fixes in XVideo extension.

DIX CVE fixes in nx-X11/programs/Xserver/hw/nxagent/ rather than nx-X11/programs/Xserver/dix/.

v2: backport to nx-libs 3.6.x (Mike DePaulo)
v3: port to NXxvdisp.c rather than xvdisp.c (Mike DePaulo)
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>

Conflicts:
	Xext/xvdisp.c

 The length checking code validates PutImage height and byte width by
 making sure that byte-width >= INT32_MAX / height. If height is zero,
 this generates a divide by zero exception. Allow zero height requests
 explicitly, bypassing the INT32_MAX check.

 Fix for regression introduced by fix for CVE-2014-8092.

 v2: backports to nx-libs 3.6.x (Mike Gabriel)
 v3: port to NXdispatch.c rather than dispatch.c (Mike DePaulo)
Signed-off-by: Keith Packard <keithp@keithp.com>

ProcPutImage() calculates a length field from a width, left pad and depth
specified by the client (if the specified format is XYPixmap).

The calculations for the total amount of memory the server needs for the
pixmap can overflow a 32-bit number, causing out-of-bounds memory writes
on 32-bit systems (since the length is stored in a long int variable).

v2: backport to nx-libs 3.6.x (Mike DePaulo)
v3: port to NXdispatch.c rather than dispatch.c (Mike DePaulo)
Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>

Conflicts:
	dix/dispatch.c

Avoid use-after-free in dix/dixfonts.c: doImageText() [CVE-2013-4396] from xorg/Xserver http://lists.x.org/archives/xorg-announce/2013-October/002332.html

Save a pointer to the passed in closure structure before copying it
and overwriting the *c pointer to point to our copy instead of the
original.  If we hit an error, once we free(c), reset c to point to
the original structure before jumping to the cleanup code that
references *c.

Since one of the errors being checked for is whether the server was
able to malloc(c->nChars * itemSize), the client can potentially pass
a number of characters chosen to cause the malloc to fail and the
error path to be taken, resulting in the read from freed memory.

Since the memory is accessed almost immediately afterwards, and the
X server is mostly single threaded, the odds of the free memory having
invalid contents are low with most malloc implementations when not using
memory debugging features, but some allocators will definitely overwrite
the memory there, leading to a likely crash.

v2: Apply to NXdixfonts.c rather than dixfonts.c (Mike DePaulo)

Attributes GH PR #31: https://github.com/ArcticaProject/nx-libs/pull/31

XRender CVE fixes for nxagent (X.Org CVE-2014-8100)

  * Update nxcomp/LICENSE.
  * Add nxcomp/README.on-retroactive-DXPC-license, giving a
    short overview of the flow of discussions
  * Add "modified or unmodified" to the license information
    printed out to stdout in nxcomp/Misc.cpp
  * Fix copyright year (2006->2003) for Gian Filippo Pinzari
    (and move him to the GPL-2 section).
  * Add the complete .mbox file of Debian bug #748565.

Attributes GH PR #21: https://github.com/ArcticaProject/nx-libs/pull/21

v2: backport to nx-libs 3.6.x (Mike DePaulo)
v3: port to NXrender.c rather than render.c (Mike DePaulo)
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>

Conflicts:
	render/render.c

Otherwise we may be reading outside of the client request.

v2: backport to nx-libs 3.6.x (Mike DePaulo)
v3: port to NXrender.c rather than render.c (Mike DePaulo)
Signed-off-by: Julien Cristau <jcristau@debian.org>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>

Conflicts:
	render/render.c

Attributes GH PR #34: https://github.com/ArcticaProject/nx-libs/pull/34

Problem fixed by adding a select() call to implement a timeout,
and retrying writes if needed.

This patch is some code fixes to allow developer debuging by using TEST macros in the NX code

This patch allows to cleanup the nxcomp resources to allow for a seco…

Particularly the following macros have been tested -DTEST -DDEBUG -DDUMP -DFLUSH -DTOKEN -DSPLIT -DPING -DMIXED -DMATCH -DTIME

This patch allows to cleanup the nxcomp resources to allow for a second connection inside the same process, instead of a new process as is the nxproxy case.

This involves creating a new API call

void NXTransCleanupForReconnect(void);

which basically cleans up the global state for the connection but does not exit the process.

Background
==========
This is needed for the IOS platform, where the nxproxy model of forking does not work.
Also NX handles most of the errors with an "exit" call which in IOS cannot be easily handled.