DIRECT: with an extra XFlush and other safety measures.
        fflush(stderr) much in su_verify.  Make the -unixpw env. vars
        UNIXPW_DISABLE_SSL and UNIXPW_DISABLE_LOCALHOST work correctly.
        Make -loopbg actually imply -bg.

ultravnc_repeater.pl scripts, find_display try FD_XDM on failure,
-quiet and -storepasswd changes, better port 113 testing.

-findauth/-auth guess FD_XDM=1 for root, work around xhost SI:localuser:root.

entire desktop. map port + 5500 in reverse connect.  Add id_cmd remote
control functions for id (and other) windows.  Allow zero port in SSL
reverse connections.  Adjust delays between multiple reverse connections;
X11VNC_REVERSE_SLEEP_MAX env var.  Add some missing mutex locks; add
INPUT_LOCK and threads_drop_input.  More safety in -threads mode for
new framebuffer change.  Fix some stderr leaking in -inetd mode.

rfbSetClientColourMap().  Up listen limit from 5 to 32.

The return value now better reflects what has happened:
1 on success (incoming connection on listen socket, we
accepted it successfully), -1 on error, 0 on timeout.

Also change the select calls to not check _all_ possible
file descriptors.
Signed-off-by: Christian Beier <dontmind@freeshell.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

To make this work, we also have to initialize sockets
to a default value of -1.

Also close a client listen socket if it's open.
Signed-off-by: Christian Beier <dontmind@freeshell.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

fixes warning about closesocket being implicitly declared.
Signed-off-by: Christian Beier <dontmind@freeshell.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Signed-off-by: Vic Lee <llyzs@163.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Signed-off-by: Vic Lee <llyzs@163.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Signed-off-by: Vic Lee <llyzs@163.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

If rfbInitConnection fails, it cleans up the client, so protect against
doing it ourselves again.
Signed-off-by: Christian Beier <dontmind@freeshell.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Signed-off-by: Christian Beier <dontmind@freeshell.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

As -listen mode isn't really working under UNIX and not at all under
windows, use -listennofork and an outer listen loop instead.
Signed-off-by: Christian Beier <dontmind@freeshell.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Forking the whole process from deep within a library call does
not really work at all with apps that use multiple threads, i.e. every
reasonably modern GUI app. So, provide a non-forking listen function so
that the caller can decide if to fork, start a thread, etc.

This implementation adds a timeout parameter to be able to call the
listen function multiple times so that it's possible to do sth. else
in between, e.g. abort listening.
Signed-off-by: Christian Beier <dontmind@freeshell.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

set the port to listen on and really ensure that the
window of the fork()ed instance is closed.

works somewhat: it's now actually possible to listen for an
incoming connection and to close it again, but the second
connection attempt fails with 'XIO:  fatal IO error 11
(Resource temporarily unavailable)'. this could relate to the
fact that SDL uses threads internally and we're fork()ing
here...
Signed-off-by: Christian Beier <dontmind@freeshell.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Actually, initSockets() has to be called everywhere we possibly
use sockets the first time.

Also fix return value of initSockets().
Signed-off-by: Christian Beier <dontmind@freeshell.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

When working on a program which searches the display for some image, one
does not want to search again without getting an FB update.  Add a
callback to make this possible.

On Windows, the WSA system needs to be initialized to be able to look up
host names.

This patch also changes *addr = 0 to use the constant INADDR_LOOPBACK
instead, which seems to be required on Windows.

Workaround for inane X_ShmAttach incompatibility in Xorg, -solid support in xfce, showrfbauth option.

Signed-off-by: Vic Lee <llyzs@163.com>

SOCKET is redefined in winsock2.h so #undef it where winsock2.h
is included. The changes in rfbproto.c circumvent crosscompiler
errors like 'S_IFMT' undeclared ...', the Makefile.am changes
avoid building linux specific stuff for a win32 host target.
Also added configure option to specify sdl-config.
Signed-off-by: Christian Beier <dontmind@freeshell.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Signed-off-by: Vic Lee <llyzs@163.com>

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

This is a pure functionality fix: according to its manpage, stat()
returns 0 on success. Checking for a return value of zero fixes
incorrect results of IsUnixSocket().
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Signed-off-by: Vic Lee <llyzs@163.com>